/* roulang page: index */
:root {
            --primary: #00E676;
            --primary-dark: #00C853;
            --accent: #FF6D00;
            --bg-main: #0F1115;
            --bg-secondary: #1A1D23;
            --bg-card: #1E232A;
            --text-primary: #F5F7FA;
            --text-secondary: #9AA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(0, 230, 118, 0.18);
            --border-active: rgba(0, 230, 118, 0.6);
            --danger: #FF5252;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 100px;
            --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.5);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
            --font-num: 'Roboto Condensed', 'DIN Alternate', 'Inter', sans-serif;
            --section-pad-desktop: 80px 0;
            --section-pad-tablet: 60px 0;
            --section-pad-mobile: 40px 0;
            --header-height: 64px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.8;
            overflow-x: hidden;
            position: relative;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: var(--section-pad-desktop);
        }

        @media (max-width: 1024px) {
            .section-padding {
                padding: var(--section-pad-tablet);
            }
        }

        @media (max-width: 640px) {
            .section-padding {
                padding: var(--section-pad-mobile);
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            background: transparent;
            transition: background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            border-bottom: 1px solid transparent;
        }

        .site-header.header-scrolled {
            background: rgba(15, 17, 21, 0.96);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            white-space: nowrap;
            text-decoration: none;
        }

        .logo-brand:hover {
            color: var(--primary);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0F1115;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
        }

        .nav-links li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            transition: color var(--transition-fast), background var(--transition-fast);
            display: block;
            text-decoration: none;
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(0, 230, 118, 0.08);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-nav {
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-nav:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }

        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 8px;
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 0;
            }
            .nav-links li a {
                padding: 8px 10px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 780px) {
            .hamburger-toggle {
                display: block;
            }
            .nav-links-wrapper {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(15, 17, 21, 0.98);
                display: none;
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 12px;
                z-index: 999;
                padding: 30px;
            }
            .nav-links-wrapper.is-open {
                display: flex;
            }
            .nav-links {
                flex-direction: column;
                gap: 8px;
                width: 100%;
                text-align: center;
            }
            .nav-links li a {
                font-size: 1.25rem;
                padding: 12px 16px;
                color: var(--text-primary);
            }
            .nav-cta {
                display: none;
            }
            .nav-cta-mobile {
                display: block;
                margin-top: 16px;
            }
        }

        .nav-cta-mobile {
            display: none;
        }

        @media (max-width: 780px) {
            .nav-cta-mobile {
                display: block;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: var(--header-height) 0 60px;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 17, 21, 0.75) 0%, rgba(15, 17, 21, 0.88) 55%, rgba(15, 17, 21, 0.95) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(0, 230, 118, 0.1);
            border: 1px solid rgba(0, 230, 118, 0.35);
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }

        .hero-title {
            font-size: clamp(2rem, 3.8vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 20px;
        }

        .hero-title .highlight {
            color: var(--primary);
        }

        .hero-subtitle {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 540px;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .btn-primary:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--primary);
            font-weight: 700;
            font-size: 0.95rem;
            border: 1px solid rgba(0, 230, 118, 0.6);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .btn-secondary:hover {
            background: rgba(0, 230, 118, 0.1);
            border-color: var(--primary);
            color: var(--primary);
        }

        .hero-trust {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .hero-trust span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust i {
            color: var(--primary);
            font-size: 0.75rem;
        }

        .hero-panel {
            background: rgba(30, 35, 42, 0.75);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .hero-panel-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .live-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--danger);
            font-weight: 600;
            animation: pulse-dot 1.5s ease-in-out infinite;
        }

        .live-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--danger);
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        .match-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .match-row:last-child {
            border-bottom: none;
        }

        .match-team {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
        }

        .match-score {
            font-family: var(--font-num);
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--primary);
        }

        .match-status {
            font-size: 0.72rem;
            color: var(--text-muted);
        }

        .hero-stats-row {
            display: flex;
            gap: 16px;
            margin-top: 16px;
        }

        .hero-stat-item {
            flex: 1;
            text-align: center;
            padding: 12px;
            border-radius: var(--radius-sm);
            background: rgba(15, 17, 21, 0.5);
        }

        .hero-stat-num {
            font-family: var(--font-num);
            font-weight: 700;
            font-size: 1.6rem;
            color: var(--primary);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.72rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @media (max-width: 900px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-panel {
                max-width: 500px;
            }
        }

        @media (max-width: 640px) {
            .hero-title {
                font-size: 1.75rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-trust {
                flex-direction: column;
                gap: 8px;
            }
            .hero-panel {
                padding: 16px;
            }
        }

        /* ========== SECTION TITLES ========== */
        .section-header {
            margin-bottom: 48px;
            max-width: 700px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(1.5rem, 2.5vw, 2.3rem);
            font-weight: 700;
            line-height: 1.25;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.85;
        }

        .section-header.centered {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        /* ========== PAIN POINT SECTION ========== */
        .pain-section {
            background: var(--bg-main);
        }

        .pain-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .pain-text h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .pain-text p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .pain-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .pain-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.92rem;
            color: var(--text-secondary);
        }

        .pain-list li i {
            color: var(--accent);
            font-size: 1rem;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .pain-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
        }

        .pain-visual img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            border-radius: 0;
        }

        @media (max-width: 900px) {
            .pain-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .pain-visual img {
                height: 260px;
            }
        }

        /* ========== SOLUTION SECTION ========== */
        .solution-section {
            background: var(--bg-secondary);
        }

        .solution-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .solution-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all var(--transition-fast);
            cursor: default;
            display: flex;
            flex-direction: column;
        }

        .solution-card:hover {
            border-color: var(--border-active);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .solution-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(0, 230, 118, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--primary);
            font-size: 1.25rem;
        }

        .solution-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .solution-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 12px;
        }

        .solution-card .card-link {
            margin-top: auto;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .solution-card .card-link:hover {
            color: var(--accent);
        }

        @media (max-width: 900px) {
            .solution-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (min-width: 901px) and (max-width: 1100px) {
            .solution-grid {
                gap: 20px;
            }
        }

        /* ========== STATS SECTION ========== */
        .stats-section {
            background: #0A0C0F;
            border-top: 1px solid rgba(0, 230, 118, 0.08);
            border-bottom: 1px solid rgba(0, 230, 118, 0.08);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }

        .stat-num {
            font-family: var(--font-num);
            font-weight: 700;
            font-size: 2.8rem;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-num .suffix {
            font-size: 1.4rem;
            margin-left: 2px;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        @media (max-width: 900px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-num {
                font-size: 2rem;
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-num {
                font-size: 1.6rem;
            }
            .stat-num .suffix {
                font-size: 1rem;
            }
            .stat-label {
                font-size: 0.72rem;
            }
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-section {
            background: var(--bg-main);
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-fast);
        }

        .testimonial-card:hover {
            border-color: var(--border-active);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .testimonial-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(0, 230, 118, 0.2), rgba(0, 200, 83, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .testimonial-name {
            font-weight: 600;
            color: #fff;
            font-size: 0.85rem;
        }

        .testimonial-role {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        @media (max-width: 900px) {
            .testimonial-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }

        @media (max-width: 640px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== NEWS SECTION ========== */
        .news-section {
            background: var(--bg-secondary);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.3fr 0.7fr;
            gap: 32px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .news-item {
            display: flex;
            gap: 16px;
            padding: 16px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
        }

        .news-item:hover {
            border-color: var(--border-subtle);
            box-shadow: var(--shadow-card);
        }

        .news-date {
            font-family: var(--font-num);
            font-size: 0.75rem;
            color: var(--text-muted);
            white-space: nowrap;
            padding-top: 3px;
        }

        .news-content h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .news-content p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .news-sidebar {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            height: fit-content;
        }

        .news-sidebar h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .news-sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .news-sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.88rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .news-sidebar-list li i {
            color: var(--primary);
            font-size: 0.7rem;
        }

        @media (max-width: 900px) {
            .news-layout {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== TIMELINE SECTION ========== */
        .timeline-section {
            background: var(--bg-main);
        }

        .timeline-list {
            position: relative;
            padding-left: 32px;
        }

        .timeline-list::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: rgba(0, 230, 118, 0.25);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 28px;
            padding-left: 8px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--bg-main);
            border: 3px solid var(--primary);
        }

        .timeline-date {
            font-family: var(--font-num);
            font-size: 0.78rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 4px;
        }

        .timeline-title {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }

        .timeline-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-section {
            background: #0A0C0F;
            border-top: 1px solid rgba(0, 230, 118, 0.06);
            border-bottom: 1px solid rgba(0, 230, 118, 0.06);
        }

        .brand-intro-content {
            max-width: 780px;
            margin: 0 auto;
            text-align: center;
        }

        .brand-intro-content p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 2;
            margin-bottom: 16px;
        }

        /* ========== PARTNERS / TAGS ========== */
        .partners-section {
            background: var(--bg-secondary);
        }

        .partners-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .partner-tag {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 20px;
            text-align: center;
            transition: all var(--transition-fast);
        }

        .partner-tag:hover {
            border-color: var(--border-active);
            box-shadow: var(--shadow-card);
        }

        .partner-tag .tag-icon {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .partner-tag .tag-name {
            font-weight: 700;
            color: #fff;
            font-size: 0.9rem;
            margin-bottom: 4px;
        }

        .partner-tag .tag-desc {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 900px) {
            .partners-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 520px) {
            .partners-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== COMPARISON ========== */
        .comparison-section {
            background: var(--bg-main);
        }

        .comparison-table {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }

        .comparison-row {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            padding: 16px 20px;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.88rem;
        }

        .comparison-row:last-child {
            border-bottom: none;
        }

        .comparison-row.header-row {
            background: var(--bg-card);
            font-weight: 700;
            color: #fff;
            font-size: 0.92rem;
        }

        .comparison-row .feature-name {
            color: var(--text-secondary);
        }

        .comparison-row .vs-tag {
            color: var(--primary);
            font-weight: 600;
        }

        .comparison-row .vs-tag-muted {
            color: var(--text-muted);
        }

        @media (max-width: 640px) {
            .comparison-row {
                grid-template-columns: 1fr 1fr 1fr;
                padding: 12px 14px;
                font-size: 0.75rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-secondary);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 12px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            background: var(--bg-card);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 20px;
            background: none;
            border: none;
            color: #fff;
            font-family: var(--font-cn);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: rgba(0, 230, 118, 0.04);
        }

        .faq-question .faq-icon {
            transition: transform var(--transition-fast);
            color: var(--primary);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.85;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, #0A0C0F 0%, #12151A 50%, #1A1D23 100%);
            border: 1px solid rgba(0, 230, 118, 0.12);
            border-radius: var(--radius-lg);
            margin: 60px auto;
            max-width: 1100px;
            text-align: center;
            padding: 56px 32px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 70%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 230, 118, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: clamp(1.5rem, 2.5vw, 2.2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 500px;
            margin: 0 auto 24px;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0A0C0F;
            border-top: 1px solid rgba(0, 230, 118, 0.1);
            padding: 48px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-top: 12px;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 0.82rem;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-subscribe p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .subscribe-form {
            display: flex;
            gap: 8px;
        }

        .subscribe-form input {
            flex: 1;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(0, 230, 118, 0.25);
            background: var(--bg-secondary);
            color: #fff;
            font-family: var(--font-cn);
            font-size: 0.85rem;
            transition: all var(--transition-fast);
        }

        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }

        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
            outline: none;
        }

        .subscribe-form button {
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            font-weight: 700;
            font-size: 0.82rem;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition-fast);
            font-family: var(--font-cn);
        }

        .subscribe-form button:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        .footer-bottom-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .cta-section {
                margin: 30px 16px;
                padding: 36px 20px;
            }
            .cta-buttons {
                flex-direction: column;
            }
            .cta-buttons .btn-primary,
            .cta-buttons .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== Foundation Overrides ========== */
        .top-bar,
        .top-bar ul {
            background: transparent;
        }

        .accordion {
            background: transparent;
        }

        .accordion-item {
            border: none;
            background: transparent;
        }

        .accordion-title {
            background: transparent;
            border: none;
            color: #fff;
            padding: 0;
        }

        .accordion-content {
            background: transparent;
            border: none;
        }

        /* ========== UTILITY ========== */
        .text-primary-green {
            color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: category2 */
:root {
            --primary: #00E676;
            --primary-dark: #00C853;
            --accent: #FF6D00;
            --bg-main: #0F1115;
            --bg-secondary: #1A1D23;
            --bg-card: #1E232A;
            --text-primary: #F5F7FA;
            --text-secondary: #9AA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(0, 230, 118, 0.18);
            --border-active: rgba(0, 230, 118, 0.6);
            --danger: #FF5252;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 100px;
            --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.5);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
            --font-num: 'Roboto Condensed', 'DIN Alternate', 'Inter', sans-serif;
            --section-pad-desktop: 80px 0;
            --section-pad-tablet: 60px 0;
            --section-pad-mobile: 40px 0;
            --header-height: 64px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.8;
            overflow-x: hidden;
            position: relative;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding-desktop {
            padding: var(--section-pad-desktop);
        }
        .section-padding-tablet {
            padding: var(--section-pad-tablet);
        }
        .section-padding-mobile {
            padding: var(--section-pad-mobile);
        }

        @media (max-width: 1024px) {
            .section-padding-desktop,
            .section-padding-tablet {
                padding: var(--section-pad-tablet);
            }
        }
        @media (max-width: 640px) {
            .section-padding-desktop,
            .section-padding-tablet,
            .section-padding-mobile {
                padding: var(--section-pad-mobile);
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            background: rgba(15, 17, 21, 0.96);
            transition: background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .site-header.header-scrolled {
            background: rgba(15, 17, 21, 0.98);
            border-bottom: 1px solid var(--border-active);
        }
        .header-inner {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            white-space: nowrap;
            text-decoration: none;
        }
        .logo-brand:hover {
            color: var(--primary);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0F1115;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
        }
        .nav-links li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            transition: color var(--transition-fast), background var(--transition-fast);
            display: block;
            text-decoration: none;
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(0, 230, 118, 0.08);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn-nav {
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-nav:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }
        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 4px;
        }
        .nav-cta-mobile {
            display: none;
        }
        .nav-links-wrapper {
            display: flex;
            align-items: center;
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 0;
            }
            .nav-links li a {
                padding: 8px 10px;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger-toggle {
                display: block;
            }
            .nav-links-wrapper {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-secondary);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-subtle);
                box-shadow: var(--shadow-card);
            }
            .nav-links-wrapper.is-open {
                display: flex;
            }
            .nav-links {
                flex-direction: column;
                width: 100%;
                gap: 8px;
            }
            .nav-links li a {
                font-size: 1.1rem;
                padding: 12px 16px;
                width: 100%;
            }
            .nav-cta {
                display: none;
            }
            .nav-cta-mobile {
                display: block;
                margin-top: 16px;
                width: 100%;
            }
            .nav-cta-mobile .btn-nav {
                display: block;
                text-align: center;
                padding: 14px;
                font-size: 1rem;
            }
        }

        /* ========== HERO ========== */
        .page-hero {
            position: relative;
            padding: calc(var(--header-height) + 60px) 0 60px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 17, 21, 0.75) 0%, rgba(15, 17, 21, 0.92) 85%, var(--bg-main) 100%);
            z-index: 1;
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .hero-breadcrumb a {
            color: var(--text-secondary);
        }
        .hero-breadcrumb a:hover {
            color: var(--primary);
        }
        .hero-breadcrumb .sep {
            color: var(--text-muted);
        }
        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            color: var(--text-primary);
            max-width: 700px;
        }
        .page-hero .hero-sub {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.9;
            margin-bottom: 24px;
        }
        .hero-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            background: rgba(0, 230, 118, 0.1);
            border: 1px solid var(--border-subtle);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: calc(var(--header-height) + 40px) 0 40px;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero .hero-sub {
                font-size: 0.95rem;
            }
        }

        /* ========== FILTER SECTION ========== */
        .filter-section {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 20px 0;
            position: sticky;
            top: var(--header-height);
            z-index: 100;
        }
        .filter-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .filter-chips {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
        }
        .filter-chips li a {
            display: inline-block;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.82rem;
            font-weight: 600;
            background: transparent;
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .filter-chips li a:hover,
        .filter-chips li a.active {
            background: rgba(0, 230, 118, 0.12);
            border-color: var(--border-active);
            color: var(--primary);
        }
        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .filter-sort label {
            font-size: 0.82rem;
            color: var(--text-muted);
            white-space: nowrap;
        }
        .filter-sort select {
            background: var(--bg-card);
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 0.85rem;
            font-family: var(--font-cn);
            cursor: pointer;
            min-width: 120px;
        }
        .filter-sort select:focus {
            outline: 2px solid var(--primary);
            outline-offset: 1px;
        }

        @media (max-width: 640px) {
            .filter-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .filter-sort {
                width: 100%;
                justify-content: space-between;
            }
            .filter-sort select {
                flex: 1;
                max-width: 180px;
            }
        }

        /* ========== CARD GRID ========== */
        .cards-section {
            padding: 50px 0;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 24px;
        }
        .card-grid .card-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }
        .card-grid .card-item:hover {
            transform: translateY(-4px);
            border-color: var(--border-active);
            box-shadow: var(--shadow-card-hover);
        }
        .card-grid .card-item.card-wide {
            grid-column: span 2;
        }
        .card-grid .card-item.card-tall {
            grid-row: span 2;
        }
        .card-grid .card-cover {
            aspect-ratio: 16/9;
            overflow: hidden;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card-grid .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            transition: transform var(--transition-base);
        }
        .card-grid .card-item:hover .card-cover img {
            transform: scale(1.04);
        }
        .card-grid .card-body {
            padding: 20px;
        }
        .card-grid .card-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            font-size: 0.72rem;
            font-weight: 700;
            background: rgba(0, 230, 118, 0.12);
            color: var(--primary);
            margin-bottom: 10px;
        }
        .card-grid .card-tag.tag-hot {
            background: rgba(255, 109, 0, 0.15);
            color: var(--accent);
        }
        .card-grid .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .card-grid .card-excerpt {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .card-grid .card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .card-grid .card-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .card-grid .card-meta i {
            font-size: 0.7rem;
        }
        .card-grid .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            margin-top: 10px;
            text-decoration: none;
        }
        .card-grid .card-link:hover {
            color: var(--accent);
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .card-grid .card-item.card-wide {
                grid-column: span 2;
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid .card-item.card-wide,
            .card-grid .card-item.card-tall {
                grid-column: span 1;
                grid-row: span 1;
            }
        }

        /* ========== PAGINATION ========== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            padding: 20px 0;
        }
        .pagination-wrap .pagination {
            margin: 0;
        }
        .pagination-wrap .pagination .current {
            background: var(--primary);
            color: #0F1115;
            border-radius: var(--radius-sm);
            padding: 8px 14px;
        }
        .pagination-wrap .pagination a {
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }
        .pagination-wrap .pagination a:hover {
            background: rgba(0, 230, 118, 0.1);
            color: var(--primary);
        }
        .pagination-wrap .pagination .pagination-previous a,
        .pagination-wrap .pagination .pagination-next a {
            color: var(--text-secondary);
        }

        /* ========== DATA PANEL ========== */
        .data-panel-section {
            background: var(--bg-secondary);
            padding: 60px 0;
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .data-panel-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .data-panel-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }
        .data-panel-card:hover {
            border-color: var(--border-active);
            transform: translateY(-3px);
        }
        .data-panel-card .data-number {
            font-family: var(--font-num);
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .data-panel-card .data-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        .data-panel-card .data-sub {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .data-panel-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .data-panel-card .data-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 400px) {
            .data-panel-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== TIMELINE ========== */
        .timeline-section {
            padding: 60px 0;
        }
        .timeline-list {
            list-style: none;
            margin: 0;
            padding: 0;
            position: relative;
        }
        .timeline-list::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-subtle);
        }
        .timeline-item {
            position: relative;
            padding-left: 40px;
            margin-bottom: 28px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 3px;
            top: 8px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid var(--bg-main);
            box-shadow: 0 0 0 3px var(--border-subtle);
        }
        .timeline-item .timeline-date {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-num);
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }
        .timeline-item .timeline-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .timeline-item .timeline-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .timeline-item.timeline-upcoming::before {
            background: var(--accent);
            box-shadow: 0 0 0 3px rgba(255, 109, 0, 0.3);
        }
        .timeline-item.timeline-upcoming .timeline-date {
            color: var(--accent);
        }

        @media (max-width: 640px) {
            .timeline-item {
                padding-left: 30px;
            }
            .timeline-list::before {
                left: 5px;
            }
            .timeline-item::before {
                left: 0;
                width: 10px;
                height: 10px;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-secondary);
            padding: 60px 0;
            border-top: 1px solid var(--border-subtle);
        }
        .faq-section .accordion {
            border: none;
        }
        .faq-section .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }
        .faq-section .accordion-item:hover {
            border-color: var(--border-active);
        }
        .faq-section .accordion-title {
            background: transparent;
            color: var(--text-primary);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 16px 20px;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .faq-section .accordion-title:hover {
            color: var(--primary);
        }
        .faq-section .accordion-title::after {
            content: '+';
            font-size: 1.3rem;
            color: var(--text-muted);
            font-weight: 400;
            transition: transform var(--transition-fast);
        }
        .faq-section .accordion-item.is-active .accordion-title::after {
            content: '−';
            color: var(--primary);
        }
        .faq-section .accordion-content {
            background: transparent;
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.8;
            padding: 0 20px 18px;
            border-top: none;
            border: none;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, #0F1115 0%, #1A1D23 50%, #0F1115 100%);
            border-top: 1px solid var(--border-subtle);
        }
        .cta-box {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            text-align: center;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .cta-box p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 0.9rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .btn-primary:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 0.9rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid var(--border-active);
            color: var(--primary);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .btn-secondary:hover {
            background: rgba(0, 230, 118, 0.1);
            border-color: var(--primary);
            color: var(--primary);
        }

        @media (max-width: 640px) {
            .cta-box {
                padding: 24px 18px;
            }
            .cta-box h2 {
                font-size: 1.3rem;
            }
            .cta-buttons {
                flex-direction: column;
            }
            .btn-primary,
            .btn-secondary {
                justify-content: center;
            }
        }

        /* ========== SUBSCRIBE FORM ========== */
        .subscribe-form {
            display: flex;
            gap: 10px;
            margin-top: 14px;
        }
        .subscribe-form input[type="email"] {
            flex: 1;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            font-size: 0.85rem;
            font-family: var(--font-cn);
            transition: all var(--transition-fast);
        }
        .subscribe-form input[type="email"]::placeholder {
            color: var(--text-muted);
        }
        .subscribe-form input[type="email"]:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
            outline: none;
        }
        .subscribe-form button {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            font-weight: 700;
            font-size: 0.85rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .subscribe-form button:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
        }
        .form-error {
            color: var(--danger);
            font-size: 0.75rem;
            margin-top: 6px;
            display: none;
        }
        .form-error.is-visible {
            display: block;
        }

        @media (max-width: 480px) {
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form button {
                width: 100%;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0A0C0E;
            padding: 60px 0 24px;
            border-top: 1px solid var(--border-subtle);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
            gap: 30px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-brand {
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.82rem;
            line-height: 1.8;
        }
        .footer-col h4 {
            color: var(--text-primary);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: -0.2px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.82rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-subscribe p {
            color: var(--text-secondary);
            font-size: 0.82rem;
            margin-bottom: 12px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            align-items: center;
            justify-content: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-bottom-links a {
            color: var(--text-muted);
        }
        .footer-bottom-links a:hover {
            color: var(--primary);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
        }

        /* ========== SECTION TITLES ========== */
        .section-heading {
            text-align: left;
            margin-bottom: 32px;
        }
        .section-heading h2 {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: -0.4px;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .section-heading p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            max-width: 600px;
            line-height: 1.8;
        }
        .section-heading .heading-line {
            width: 48px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
            margin-bottom: 14px;
        }

        @media (max-width: 768px) {
            .section-heading h2 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #00E676;
            --primary-dark: #00C853;
            --accent: #FF6D00;
            --bg-main: #0F1115;
            --bg-secondary: #1A1D23;
            --bg-card: #1E232A;
            --text-primary: #F5F7FA;
            --text-secondary: #9AA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(0, 230, 118, 0.18);
            --border-active: rgba(0, 230, 118, 0.6);
            --danger: #FF5252;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 100px;
            --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.5);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
            --font-num: 'Roboto Condensed', 'DIN Alternate', 'Inter', sans-serif;
            --section-pad-desktop: 80px 0;
            --section-pad-tablet: 60px 0;
            --section-pad-mobile: 40px 0;
            --header-height: 64px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.8;
            overflow-x: hidden;
            position: relative;
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: var(--section-pad-desktop);
        }

        @media (max-width: 1024px) {
            .section-padding {
                padding: var(--section-pad-tablet);
            }
        }

        @media (max-width: 640px) {
            .section-padding {
                padding: var(--section-pad-mobile);
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            background: transparent;
            transition: background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            border-bottom: 1px solid transparent;
        }

        .site-header.header-scrolled {
            background: rgba(15, 17, 21, 0.96);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            white-space: nowrap;
            text-decoration: none;
            z-index: 1001;
        }

        .logo-brand:hover {
            color: var(--primary);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0F1115;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
        }

        .nav-links li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            transition: color var(--transition-fast), background var(--transition-fast);
            display: block;
            text-decoration: none;
            white-space: nowrap;
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(0, 230, 118, 0.08);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-nav {
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-nav:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }

        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            transition: color var(--transition-fast);
        }

        .hamburger-toggle:hover {
            color: var(--primary);
        }

        .nav-cta-mobile {
            display: none;
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 0;
            }
            .nav-links li a {
                padding: 8px 10px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 768px) {
            .hamburger-toggle {
                display: block;
            }
            .nav-links-wrapper {
                position: fixed;
                top: 0;
                right: -100%;
                width: 100%;
                max-width: 360px;
                height: 100vh;
                background: rgba(15, 17, 21, 0.98);
                border-left: 1px solid var(--border-subtle);
                padding: 80px 24px 24px;
                transition: right var(--transition-base);
                overflow-y: auto;
                z-index: 999;
            }
            .nav-links-wrapper.nav-open {
                right: 0;
            }
            .nav-links {
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }
            .nav-links li a {
                font-size: 1.1rem;
                padding: 14px 16px;
                border-radius: 8px;
            }
            .nav-cta {
                display: none;
            }
            .nav-cta-mobile {
                display: block;
                margin-top: 24px;
            }
            .nav-cta-mobile .btn-nav {
                display: block;
                text-align: center;
                padding: 14px 20px;
                font-size: 1rem;
            }
        }

        /* ========== BUTTONS ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--border-active);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(0, 230, 118, 0.1);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ========== CATEGORY PAGE HERO ========== */
        .category-hero {
            position: relative;
            padding: calc(var(--header-height) + 64px) 0 56px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 17, 21, 0.75) 0%, rgba(15, 17, 21, 0.9) 60%, var(--bg-main) 100%);
            z-index: 1;
        }

        .category-hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .category-hero .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .category-hero .breadcrumb-nav a {
            color: var(--text-secondary);
        }

        .category-hero .breadcrumb-nav a:hover {
            color: var(--primary);
        }

        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin: 0 0 16px;
        }

        .category-hero p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 24px;
            max-width: 600px;
        }

        .category-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            background: rgba(0, 230, 118, 0.1);
            border: 1px solid var(--border-subtle);
            color: var(--primary);
        }

        .hero-tag.highlight {
            background: rgba(255, 109, 0, 0.12);
            border-color: rgba(255, 109, 0, 0.3);
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: calc(var(--header-height) + 40px) 0 40px;
            }
            .category-hero h1 {
                font-size: 1.9rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
        }

        /* ========== FILTER BAR ========== */
        .filter-bar {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            margin-bottom: 40px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .filter-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            background: transparent;
            border: 1px solid rgba(0, 230, 118, 0.25);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .filter-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 230, 118, 0.06);
        }

        .filter-chip.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #0F1115;
            font-weight: 700;
        }

        .filter-sort {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .filter-sort label {
            font-size: 0.85rem;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .filter-sort select {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            padding: 8px 14px;
            font-size: 0.85rem;
            font-family: var(--font-cn);
            cursor: pointer;
            transition: border-color var(--transition-fast);
            min-width: 140px;
        }

        .filter-sort select:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
        }

        @media (max-width: 640px) {
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-sort {
                justify-content: space-between;
            }
        }

        /* ========== TWO COLUMN LAYOUT ========== */
        .two-col-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            align-items: start;
        }

        @media (max-width: 1024px) {
            .two-col-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        /* ========== MAIN COLUMN CARDS ========== */
        .report-card-large {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-fast);
            margin-bottom: 28px;
            display: grid;
            grid-template-columns: 280px 1fr;
            min-height: 260px;
        }

        .report-card-large:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--border-active);
            transform: translateY(-4px);
        }

        .report-card-large .card-cover {
            position: relative;
            overflow: hidden;
            min-height: 100%;
        }

        .report-card-large .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }

        .report-card-large:hover .card-cover img {
            transform: scale(1.05);
        }

        .report-card-large .card-cover .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 17, 21, 0.1) 0%, rgba(15, 17, 21, 0.6) 100%);
        }

        .report-card-large .card-cover .cover-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 5px 12px;
            font-size: 0.75rem;
            font-weight: 700;
            border-radius: var(--radius-pill);
            background: rgba(0, 230, 118, 0.9);
            color: #0F1115;
            z-index: 2;
        }

        .report-card-large .card-body {
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .card-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .card-meta-row .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .card-meta-row .meta-item i {
            font-size: 0.7rem;
            color: var(--primary);
        }

        .report-card-large .card-body h2 {
            font-size: 1.3rem;
            font-weight: 700;
            line-height: 1.35;
            margin: 0;
            color: var(--text-primary);
        }

        .report-card-large .card-body h2 a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .report-card-large .card-body h2 a:hover {
            color: var(--primary);
        }

        .report-card-large .card-body .card-excerpt {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.75;
            margin: 0;
            flex-grow: 1;
        }

        .report-card-large .card-body .card-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .card-stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .card-stat-item .stat-value {
            font-family: var(--font-num);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
        }

        .card-stat-item .stat-label {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .report-card-large {
                grid-template-columns: 1fr;
                min-height: auto;
            }
            .report-card-large .card-cover {
                min-height: 200px;
                max-height: 220px;
            }
            .report-card-large .card-body {
                padding: 20px;
            }
            .report-card-large .card-body h2 {
                font-size: 1.15rem;
            }
        }

        /* Compact card for secondary items */
        .report-card-compact {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-fast);
            margin-bottom: 20px;
            display: grid;
            grid-template-columns: 120px 1fr;
            cursor: pointer;
        }

        .report-card-compact:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--border-active);
            transform: translateY(-4px);
        }

        .report-card-compact .card-cover {
            position: relative;
            overflow: hidden;
            min-height: 100%;
        }

        .report-card-compact .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }

        .report-card-compact:hover .card-cover img {
            transform: scale(1.05);
        }

        .report-card-compact .card-body {
            padding: 16px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .report-card-compact .card-body h3 {
            font-size: 1rem;
            font-weight: 700;
            line-height: 1.35;
            margin: 0;
            color: var(--text-primary);
        }

        .report-card-compact .card-body h3 a {
            color: var(--text-primary);
        }

        .report-card-compact .card-body h3 a:hover {
            color: var(--primary);
        }

        .report-card-compact .card-body .card-excerpt {
            color: var(--text-secondary);
            font-size: 0.85rem;
            line-height: 1.6;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        @media (max-width: 640px) {
            .report-card-compact {
                grid-template-columns: 1fr;
            }
            .report-card-compact .card-cover {
                min-height: 160px;
                max-height: 180px;
            }
            .report-card-compact .card-body {
                padding: 16px;
            }
        }

        /* ========== SIDEBAR ========== */
        .sidebar-widget {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 24px;
        }

        .sidebar-widget h3 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 16px;
            color: var(--text-primary);
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .sidebar-widget .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .sidebar-widget .tag-cloud a {
            display: inline-flex;
            padding: 6px 14px;
            font-size: 0.8rem;
            font-weight: 500;
            border-radius: var(--radius-pill);
            background: rgba(0, 230, 118, 0.06);
            border: 1px solid rgba(0, 230, 118, 0.2);
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .sidebar-widget .tag-cloud a:hover {
            background: rgba(0, 230, 118, 0.12);
            border-color: var(--primary);
            color: var(--primary);
        }

        .frequency-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .frequency-item:last-child {
            border-bottom: none;
        }

        .frequency-item .freq-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(0, 230, 118, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .frequency-item .freq-info {
            flex: 1;
        }

        .frequency-item .freq-info .freq-title {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .frequency-item .freq-info .freq-desc {
            font-size: 0.75rem;
            color: var(--text-muted);
            line-height: 1.4;
        }

        .subscribe-mini-form {
            display: flex;
            gap: 10px;
            margin-top: 12px;
        }

        .subscribe-mini-form input {
            flex: 1;
            background: var(--bg-main);
            border: 1px solid rgba(0, 230, 118, 0.25);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-size: 0.85rem;
            color: var(--text-primary);
            font-family: var(--font-cn);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .subscribe-mini-form input::placeholder {
            color: var(--text-muted);
        }

        .subscribe-mini-form input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
        }

        .subscribe-mini-form button {
            padding: 10px 16px;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .subscribe-mini-form button:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(255, 109, 0, 0.4);
        }

        @media (max-width: 640px) {
            .subscribe-mini-form {
                flex-direction: column;
            }
            .subscribe-mini-form button {
                width: 100%;
            }
        }

        /* ========== PAGINATION ========== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            margin-top: 32px;
        }

        .pagination-wrap .pagination {
            display: flex;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .pagination-wrap .pagination li a,
        .pagination-wrap .pagination li span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 10px;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .pagination-wrap .pagination li a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 230, 118, 0.06);
        }

        .pagination-wrap .pagination li.current span {
            background: var(--primary);
            border-color: var(--primary);
            color: #0F1115;
            font-weight: 700;
        }

        /* ========== DATA HIGHLIGHT BAND ========== */
        .data-highlight-band {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 48px 0;
            margin-top: 48px;
        }

        .data-highlight-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .data-highlight-item {
            text-align: center;
            padding: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }

        .data-highlight-item .highlight-number {
            font-family: var(--font-num);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
        }

        .data-highlight-item .highlight-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 8px;
        }

        @media (max-width: 1024px) {
            .data-highlight-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .data-highlight-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-secondary);
            padding: var(--section-pad-desktop);
        }

        @media (max-width: 1024px) {
            .faq-section {
                padding: var(--section-pad-tablet);
            }
        }

        @media (max-width: 640px) {
            .faq-section {
                padding: var(--section-pad-mobile);
            }
        }

        .faq-section .section-heading {
            text-align: center;
            margin-bottom: 40px;
        }

        .faq-section .section-heading h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 12px;
            color: var(--text-primary);
        }

        .faq-section .section-heading p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin: 0;
        }

        .faq-section .accordion {
            max-width: 800px;
            margin: 0 auto;
            list-style: none;
            padding: 0;
        }

        .faq-section .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .faq-section .accordion-item.is-active {
            border-color: var(--border-active);
        }

        .faq-section .accordion-title {
            background: none;
            border: none;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            width: 100%;
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color var(--transition-fast);
            font-family: var(--font-cn);
        }

        .faq-section .accordion-title:hover {
            color: var(--primary);
        }

        .faq-section .accordion-title .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(0, 230, 118, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: var(--primary);
            transition: transform var(--transition-fast);
        }

        .faq-section .accordion-item.is-active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #0F1115;
        }

        .faq-section .accordion-content {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.75;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 230, 118, 0.08) 0%, rgba(255, 109, 0, 0.06) 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: var(--section-pad-desktop);
        }

        @media (max-width: 1024px) {
            .cta-section {
                padding: var(--section-pad-tablet);
            }
        }

        @media (max-width: 640px) {
            .cta-section {
                padding: var(--section-pad-mobile);
            }
        }

        .cta-panel {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
        }

        .cta-panel h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 16px;
            color: var(--text-primary);
        }

        .cta-panel p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin: 0 0 28px;
            line-height: 1.8;
        }

        .cta-panel .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        @media (max-width: 640px) {
            .cta-panel h2 {
                font-size: 1.5rem;
            }
            .cta-panel .cta-buttons {
                flex-direction: column;
            }
            .cta-panel .btn-primary,
            .cta-panel .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 32px;
            padding-bottom: 40px;
        }

        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .site-footer .footer-brand .logo-brand {
            margin-bottom: 16px;
        }

        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
            max-width: 360px;
        }

        .site-footer .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 16px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }

        .site-footer .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--primary);
        }

        .site-footer .footer-subscribe p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin: 0 0 14px;
            line-height: 1.6;
        }

        .site-footer .subscribe-form {
            display: flex;
            gap: 10px;
        }

        .site-footer .subscribe-form input {
            flex: 1;
            background: var(--bg-main);
            border: 1px solid rgba(0, 230, 118, 0.25);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-size: 0.88rem;
            color: var(--text-primary);
            font-family: var(--font-cn);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            min-width: 0;
        }

        .site-footer .subscribe-form input::placeholder {
            color: var(--text-muted);
        }

        .site-footer .subscribe-form input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
        }

        .site-footer .subscribe-form button {
            padding: 10px 18px;
            font-size: 0.88rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .site-footer .subscribe-form button:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(255, 109, 0, 0.4);
        }

        @media (max-width: 640px) {
            .site-footer .subscribe-form {
                flex-direction: column;
            }
            .site-footer .subscribe-form button {
                width: 100%;
            }
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .site-footer .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .site-footer .footer-bottom-links a {
            color: var(--text-muted);
            font-size: 0.8rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .site-footer .footer-bottom-links a:hover {
            color: var(--primary);
        }

        @media (max-width: 640px) {
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== SECTION HEADING ========== */
        .section-heading {
            margin-bottom: 36px;
        }

        .section-heading h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .section-heading p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin: 0;
            max-width: 640px;
        }

        @media (max-width: 640px) {
            .section-heading h2 {
                font-size: 1.5rem;
            }
        }

        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

/* roulang page: category4 */
:root {
            --primary: #00E676;
            --primary-dark: #00C853;
            --accent: #FF6D00;
            --bg-main: #0F1115;
            --bg-secondary: #1A1D23;
            --bg-card: #1E232A;
            --text-primary: #F5F7FA;
            --text-secondary: #9AA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(0, 230, 118, 0.18);
            --border-active: rgba(0, 230, 118, 0.6);
            --danger: #FF5252;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 100px;
            --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.5);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
            --font-num: 'Roboto Condensed', 'DIN Alternate', 'Inter', sans-serif;
            --section-pad-desktop: 80px 0;
            --section-pad-tablet: 60px 0;
            --section-pad-mobile: 40px 0;
            --header-height: 64px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.8;
            overflow-x: hidden;
            position: relative;
            margin: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: var(--section-pad-desktop);
        }

        @media (max-width: 1024px) {
            .section-padding {
                padding: var(--section-pad-tablet);
            }
        }

        @media (max-width: 640px) {
            .section-padding {
                padding: var(--section-pad-mobile);
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            background: transparent;
            transition: background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            border-bottom: 1px solid transparent;
        }

        .site-header.header-scrolled {
            background: rgba(15, 17, 21, 0.96);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            white-space: nowrap;
            text-decoration: none;
        }

        .logo-brand:hover {
            color: var(--primary);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0F1115;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            transition: color var(--transition-fast), background var(--transition-fast);
            display: block;
            text-decoration: none;
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(0, 230, 118, 0.08);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-nav {
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-nav:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }

        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
        }

        .nav-cta-mobile {
            display: none;
        }

        @media (max-width: 1024px) {
            .nav-links-wrapper {
                display: none;
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--bg-main);
                padding: 24px 20px;
                z-index: 999;
                overflow-y: auto;
            }

            .nav-links-wrapper.is-open {
                display: block;
            }

            .nav-links {
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }

            .nav-links li a {
                font-size: 1.2rem;
                padding: 14px 16px;
            }

            .nav-cta-mobile {
                display: block;
                margin-top: 16px;
            }

            .nav-cta {
                display: none;
            }

            .hamburger-toggle {
                display: block;
            }
        }

        @media (min-width: 1025px) {
            .nav-links-wrapper {
                display: flex !important;
            }
        }

        /* ========== BUTTONS ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 0.95rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 0.95rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--border-active);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(0, 230, 118, 0.1);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ========== HERO BANNER ========== */
        .page-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            min-height: 380px;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 17, 21, 0.92) 0%, rgba(15, 17, 21, 0.65) 40%, rgba(15, 17, 21, 0.85) 100%);
            z-index: 1;
        }

        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            padding: 60px 0;
            width: 100%;
        }

        .page-hero .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .page-hero .hero-breadcrumb a {
            color: var(--text-secondary);
        }

        .page-hero .hero-breadcrumb a:hover {
            color: var(--primary);
        }

        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin: 0 0 16px;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }

        .page-hero .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
            margin: 0;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 20px;
        }

        .hero-tags .tag {
            padding: 6px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            background: rgba(0, 230, 118, 0.12);
            color: var(--primary);
            border: 1px solid var(--border-subtle);
        }

        @media (max-width: 1024px) {
            .page-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 640px) {
            .page-hero {
                min-height: 300px;
            }
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.9rem;
            }
        }

        /* ========== FILTER BAR ========== */
        .filter-bar {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 16px 0;
            position: sticky;
            top: var(--header-height);
            z-index: 100;
        }

        .filter-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .filter-chips {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-chip {
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            background: var(--bg-card);
            color: var(--text-secondary);
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-block;
            white-space: nowrap;
        }

        .filter-chip:hover {
            background: rgba(0, 230, 118, 0.08);
            color: var(--primary);
            border-color: var(--border-active);
        }

        .filter-chip.active {
            background: var(--primary);
            color: #0F1115;
            border-color: var(--primary);
        }

        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .filter-sort label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .filter-sort select {
            padding: 8px 14px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            appearance: none;
            -webkit-appearance: none;
            min-width: 120px;
        }

        .filter-sort select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
            outline: none;
        }

        @media (max-width: 640px) {
            .filter-bar-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .filter-sort {
                width: 100%;
                justify-content: space-between;
            }
        }

        /* ========== ASYMMETRIC GRID ========== */
        .content-grid-section {
            padding: 48px 0 64px;
        }

        .content-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 32px;
        }

        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== REPORT CARDS ========== */
        .report-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            transition: all var(--transition-fast);
            display: flex;
            flex-direction: row;
            gap: 0;
            box-shadow: var(--shadow-card);
        }

        .report-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-active);
            box-shadow: var(--shadow-card-hover);
        }

        .report-card .card-thumb {
            width: 220px;
            flex-shrink: 0;
            aspect-ratio: 3/2;
            overflow: hidden;
            border-radius: 0;
        }

        .report-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }

        .report-card:hover .card-thumb img {
            transform: scale(1.06);
        }

        .report-card .card-body {
            padding: 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 12px;
        }

        .report-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .report-card .card-meta .badge-tag {
            padding: 3px 10px;
            font-size: 0.72rem;
            font-weight: 700;
            border-radius: var(--radius-pill);
            background: rgba(0, 230, 118, 0.12);
            color: var(--primary);
            border: 1px solid var(--border-subtle);
            white-space: nowrap;
        }

        .report-card .card-meta .badge-tag.hot {
            background: rgba(255, 109, 0, 0.12);
            color: var(--accent);
            border-color: rgba(255, 109, 0, 0.3);
        }

        .report-card .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            line-height: 1.4;
            margin: 0;
            color: var(--text-primary);
        }

        .report-card .card-title a {
            color: var(--text-primary);
        }

        .report-card .card-title a:hover {
            color: var(--primary);
        }

        .report-card .card-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .report-card .card-footer {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .report-card .card-footer .read-more {
            font-weight: 600;
            color: var(--primary);
            font-size: 0.82rem;
        }

        .report-card .card-footer .read-more:hover {
            color: var(--accent);
        }

        .report-card-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        @media (max-width: 768px) {
            .report-card {
                flex-direction: column;
            }
            .report-card .card-thumb {
                width: 100%;
                aspect-ratio: 16/9;
            }
            .report-card .card-body {
                padding: 16px 18px;
            }
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-widget {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            padding: 20px;
        }

        .sidebar-widget h3 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 14px;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }

        .sidebar-widget .widget-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .sidebar-widget .widget-tags .w-tag {
            padding: 6px 12px;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            background: rgba(0, 230, 118, 0.08);
            color: var(--text-secondary);
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .sidebar-widget .widget-tags .w-tag:hover {
            background: rgba(0, 230, 118, 0.15);
            color: var(--primary);
            border-color: var(--border-active);
        }

        .update-frequency-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .update-frequency-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .update-frequency-list li:last-child {
            border-bottom: none;
        }

        .update-frequency-list li i {
            color: var(--primary);
            width: 16px;
            text-align: center;
            font-size: 0.8rem;
        }

        .sidebar-subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .sidebar-subscribe-form input[type="email"] {
            padding: 10px 14px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
            background: var(--bg-main);
            color: var(--text-primary);
            border: 1px solid rgba(0, 230, 118, 0.25);
            transition: all var(--transition-fast);
            width: 100%;
        }

        .sidebar-subscribe-form input[type="email"]::placeholder {
            color: var(--text-muted);
        }

        .sidebar-subscribe-form input[type="email"]:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
            outline: none;
        }

        .sidebar-subscribe-form .btn-primary {
            width: 100%;
            justify-content: center;
            padding: 10px 16px;
            font-size: 0.85rem;
        }

        .top-report-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .top-report-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            font-size: 0.83rem;
            color: var(--text-secondary);
        }

        .top-report-list li:last-child {
            border-bottom: none;
        }

        .top-report-list .rank-num {
            font-family: var(--font-num);
            font-weight: 700;
            font-size: 1rem;
            color: var(--primary);
            width: 24px;
            flex-shrink: 0;
            text-align: center;
        }

        .top-report-list .rank-num.top {
            color: var(--accent);
        }

        .top-report-list a {
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .top-report-list a:hover {
            color: var(--primary);
        }

        /* ========== STATS SECTION ========== */
        .stats-band {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 36px 0;
        }

        .stats-band-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .stat-block {
            text-align: center;
            padding: 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }

        .stat-block .stat-num {
            font-family: var(--font-num);
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-block .stat-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .stats-band-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-block .stat-num {
                font-size: 2rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-main);
        }

        .faq-section .section-heading {
            text-align: center;
            margin-bottom: 32px;
        }

        .faq-section .section-heading h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0 0 8px;
            letter-spacing: -0.3px;
        }

        .faq-section .section-heading p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0;
        }

        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .faq-accordion .accordion-item:hover {
            border-color: var(--border-active);
        }

        .faq-accordion .accordion-title {
            padding: 16px 20px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-fast);
        }

        .faq-accordion .accordion-title:hover {
            color: var(--primary);
        }

        .faq-accordion .accordion-title .accordion-icon {
            font-size: 0.85rem;
            color: var(--primary);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-accordion .accordion-item.is-active .accordion-title .accordion-icon {
            transform: rotate(180deg);
        }

        .faq-accordion .accordion-content {
            padding: 0 20px 16px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }

        .faq-accordion .accordion-item.is-active .accordion-content {
            display: block;
        }

        @media (max-width: 640px) {
            .faq-section .section-heading h2 {
                font-size: 1.4rem;
            }
            .faq-accordion .accordion-title {
                font-size: 0.88rem;
                padding: 14px 16px;
            }
            .faq-accordion .accordion-content {
                padding: 0 16px 14px;
                font-size: 0.82rem;
            }
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, #1A1D23 0%, #0F1115 60%, #1A1D23 100%);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0;
        }

        .cta-box {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-active);
            padding: 40px 32px;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            box-shadow: 0 16px 50px rgba(0, 0, 0, 0.4);
        }

        .cta-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 8px;
            letter-spacing: -0.3px;
        }

        .cta-box p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0 0 20px;
            line-height: 1.8;
        }

        .cta-box .btn-group {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 640px) {
            .cta-box {
                padding: 28px 20px;
            }
            .cta-box h2 {
                font-size: 1.3rem;
            }
            .cta-box .btn-group {
                flex-direction: column;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            padding-bottom: 32px;
        }

        .footer-brand .logo-brand {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin: 0 0 14px;
            color: var(--text-primary);
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-subscribe p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0 0 12px;
        }

        .subscribe-form {
            display: flex;
            gap: 8px;
        }

        .subscribe-form input[type="email"] {
            flex: 1;
            padding: 10px 14px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
            background: var(--bg-main);
            color: var(--text-primary);
            border: 1px solid rgba(0, 230, 118, 0.25);
            transition: all var(--transition-fast);
            min-width: 0;
        }

        .subscribe-form input[type="email"]::placeholder {
            color: var(--text-muted);
        }

        .subscribe-form input[type="email"]:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
            outline: none;
        }

        .subscribe-form button {
            padding: 10px 16px;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .subscribe-form button:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom-links a {
            color: var(--text-muted);
            font-size: 0.78rem;
        }

        .footer-bottom-links a:hover {
            color: var(--primary);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-form {
                flex-direction: column;
            }
        }

        /* ========== PAGINATION ========== */
        .pagination-wrapper {
            display: flex;
            justify-content: center;
            margin-top: 32px;
        }

        .pagination-custom {
            display: flex;
            gap: 6px;
            align-items: center;
        }

        .pagination-custom a,
        .pagination-custom span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            color: var(--text-secondary);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .pagination-custom a:hover {
            background: rgba(0, 230, 118, 0.08);
            color: var(--primary);
            border-color: var(--border-active);
        }

        .pagination-custom .current {
            background: var(--primary);
            color: #0F1115;
            border-color: var(--primary);
        }

        /* ========== SECTION HEADING ========== */
        .section-heading {
            margin-bottom: 24px;
        }

        .section-heading h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin: 0 0 6px;
            letter-spacing: -0.3px;
            color: var(--text-primary);
        }

        .section-heading p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
            max-width: 600px;
        }

        @media (max-width: 640px) {
            .section-heading h2 {
                font-size: 1.35rem;
            }
        }

        /* ========== MISC ========== */
        .text-primary-color {
            color: var(--primary);
        }

        .text-accent-color {
            color: var(--accent);
        }

        .mt-0 {
            margin-top: 0;
        }

        .mb-0 {
            margin-bottom: 0;
        }

/* roulang page: category3 */
/* ========== 设计系统变量 ========== */
        :root {
            --primary: #00E676;
            --primary-dark: #00C853;
            --accent: #FF6D00;
            --bg-main: #0F1115;
            --bg-secondary: #1A1D23;
            --bg-card: #1E232A;
            --text-primary: #F5F7FA;
            --text-secondary: #9AA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(0, 230, 118, 0.18);
            --border-active: rgba(0, 230, 118, 0.6);
            --danger: #FF5252;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 100px;
            --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.5);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
            --font-num: 'Roboto Condensed', 'DIN Alternate', 'Inter', sans-serif;
            --section-pad-desktop: 80px 0;
            --section-pad-tablet: 60px 0;
            --section-pad-mobile: 40px 0;
            --header-height: 64px;
        }
        
        /* ========== 基础 Reset & Base ========== */
        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-cn);
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.8;
            overflow-x: hidden;
            position: relative;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: var(--section-pad-desktop);
        }
        
        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            background: rgba(15, 17, 21, 0.96);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
            transition: background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .site-header.header-scrolled {
            background: rgba(15, 17, 21, 0.98);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.6);
        }
        .header-inner {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            white-space: nowrap;
            text-decoration: none;
        }
        .logo-brand:hover {
            color: var(--primary);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0F1115;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .nav-links-wrapper {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
        }
        .nav-links li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            transition: color var(--transition-fast), background var(--transition-fast);
            display: block;
            text-decoration: none;
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(0, 230, 118, 0.08);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn-nav {
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-nav:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }
        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 6px;
            border-radius: 6px;
            transition: background var(--transition-fast);
        }
        .hamburger-toggle:hover {
            background: rgba(0, 230, 118, 0.08);
        }
        .nav-cta-mobile {
            display: none;
        }
        
        /* ========== 按钮样式 ========== */
        .btn-primary {
            display: inline-block;
            background: var(--primary);
            color: #0F1115;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
        }
        .btn-primary:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }
        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-active);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            font-size: 0.95rem;
        }
        .btn-secondary:hover {
            background: rgba(0, 230, 118, 0.1);
            border-color: var(--primary);
            color: var(--primary);
        }
        
        /* ========== 分类页 Hero ========== */
        .category-hero {
            padding-top: 48px;
            padding-bottom: 48px;
            background-image: linear-gradient(rgba(15, 17, 21, 0.82), rgba(15, 17, 21, 0.92)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
        }
        .category-hero h1 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.03em;
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .category-hero .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
        }
        .category-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 18px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 16px;
            font-size: 0.78rem;
            font-weight: 500;
            background: rgba(0, 230, 118, 0.1);
            border: 1px solid var(--border-subtle);
            color: var(--primary);
        }
        
        /* ========== 筛选/排序区 ========== */
        .filter-section {
            padding: 24px 0 16px;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
        }
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
        }
        .filter-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            list-style: none;
            margin: 0;
        }
        .filter-chips li a {
            display: inline-block;
            padding: 7px 18px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            text-decoration: none;
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .filter-chips li a:hover,
        .filter-chips li a.active {
            color: #0F1115;
            background: var(--primary);
            border-color: var(--primary);
        }
        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .filter-sort label {
            font-size: 0.82rem;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .filter-sort select {
            background: var(--bg-card);
            color: var(--text-primary);
            border: 1px solid rgba(0, 230, 118, 0.25);
            border-radius: var(--radius-sm);
            padding: 8px 14px;
            font-size: 0.82rem;
            cursor: pointer;
            font-family: var(--font-cn);
            min-width: 120px;
        }
        .filter-sort select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
        }
        
        /* ========== 横向信息流列表 ========== */
        .info-stream-section {
            background: var(--bg-main);
        }
        .info-stream-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            list-style: none;
            margin: 0;
        }
        .info-stream-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px;
            transition: all var(--transition-fast);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        .info-stream-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            width: 3px;
            background: transparent;
            transition: background var(--transition-fast);
        }
        .info-stream-item:hover {
            border-color: var(--border-active);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .info-stream-item:hover::before {
            background: var(--primary);
        }
        .stream-thumb {
            flex-shrink: 0;
            width: 200px;
            height: 130px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            position: relative;
        }
        .stream-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
            transition: transform var(--transition-base);
        }
        .info-stream-item:hover .stream-thumb img {
            transform: scale(1.05);
        }
        .stream-badge {
            position: absolute;
            top: 8px;
            left: 8px;
            padding: 3px 10px;
            font-size: 0.7rem;
            font-weight: 700;
            background: rgba(15, 17, 21, 0.9);
            color: var(--primary);
            border-radius: 4px;
            letter-spacing: 0.03em;
        }
        .stream-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
            min-width: 0;
        }
        .stream-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
            line-height: 1.4;
            letter-spacing: -0.01em;
        }
        .stream-content h3 a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .stream-content h3 a:hover {
            color: var(--primary);
        }
        .stream-summary {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }
        .stream-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .stream-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .stream-meta i {
            font-size: 0.75rem;
            color: var(--text-secondary);
        }
        .stream-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .stream-tag {
            display: inline-block;
            padding: 2px 10px;
            font-size: 0.7rem;
            font-weight: 600;
            border-radius: 12px;
            border: 1px solid rgba(0, 230, 118, 0.25);
            color: var(--primary);
            background: rgba(0, 230, 118, 0.05);
        }
        .stream-tag.hot {
            border-color: rgba(255, 109, 0, 0.35);
            color: var(--accent);
            background: rgba(255, 109, 0, 0.06);
        }
        .stream-tag.data-tag {
            border-color: rgba(0, 230, 118, 0.45);
            color: #00C853;
            background: rgba(0, 230, 118, 0.1);
        }
        
        /* ========== 优势板块 ========== */
        .advantage-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .advantage-section .section-title {
            text-align: center;
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 8px;
        }
        .advantage-section .section-desc {
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.95rem;
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 18px;
        }
        .advantage-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px;
            transition: all var(--transition-fast);
        }
        .advantage-card:hover {
            border-color: var(--border-active);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .advantage-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 230, 118, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.2rem;
            margin-bottom: 14px;
        }
        .advantage-card h4 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }
        .advantage-card p {
            font-size: 0.86rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        
        /* ========== 数据指标 ========== */
        .metrics-section {
            background: linear-gradient(135deg, rgba(0, 230, 118, 0.06) 0%, rgba(255, 109, 0, 0.04) 100%);
            border-bottom: 1px solid var(--border-subtle);
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
        }
        .metric-item {
            text-align: center;
            padding: 20px;
            background: rgba(30, 35, 42, 0.7);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }
        .metric-item:hover {
            border-color: var(--border-active);
            box-shadow: var(--shadow-card);
        }
        .metric-number {
            font-family: var(--font-num);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1.1;
        }
        .metric-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        
        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-main);
        }
        .faq-section .section-title {
            text-align: center;
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 8px;
        }
        .faq-section .section-desc {
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.95rem;
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-active);
        }
        .faq-item.is-active {
            border-color: var(--border-active);
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-fast);
            font-family: var(--font-cn);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 230, 118, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            transition: transform var(--transition-fast);
        }
        .faq-item.is-active .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.8;
        }
        .faq-item.is-active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px 20px;
        }
        
        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(15, 17, 21, 0.95), rgba(15, 17, 21, 0.98)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            border-top: 2px solid var(--border-subtle);
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(1.5rem, 2.8vw, 2rem);
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .cta-section p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 14px;
        }
        
        /* ========== 分页 ========== */
        .pagination-section {
            background: var(--bg-main);
            padding: 28px 0 56px;
        }
        .pagination-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 8px;
            list-style: none;
            margin: 0;
        }
        .pagination-custom li a,
        .pagination-custom li span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 36px;
            height: 36px;
            padding: 0 10px;
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition-fast);
        }
        .pagination-custom li a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 230, 118, 0.06);
        }
        .pagination-custom li span.current {
            background: var(--primary);
            color: #0F1115;
            border-color: var(--primary);
            font-weight: 700;
        }
        .pagination-custom li span.dots {
            border: none;
            background: none;
            color: var(--text-muted);
        }
        
        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 52px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 36px;
            padding-bottom: 36px;
        }
        .footer-brand .logo-brand {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 320px;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-subscribe p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.7;
        }
        .subscribe-form {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .subscribe-form input {
            flex: 1;
            min-width: 180px;
            background: #1A1D23;
            border: 1px solid rgba(0, 230, 118, 0.25);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-size: 0.85rem;
            color: var(--text-primary);
            font-family: var(--font-cn);
        }
        .subscribe-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
        }
        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }
        .subscribe-form button {
            padding: 10px 18px;
            font-size: 0.82rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            font-family: var(--font-cn);
        }
        .subscribe-form button:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0 22px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-bottom-links a {
            color: var(--text-muted);
            font-size: 0.78rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--primary);
        }
        
        /* ========== 响应式断点 ========== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .stream-thumb {
                width: 160px;
                height: 110px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-pad-desktop: 60px 0;
            }
            .hamburger-toggle {
                display: block;
            }
            .nav-links-wrapper {
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(15, 17, 21, 0.98);
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
                z-index: 999;
                overflow-y: auto;
            }
            .nav-links-wrapper.is-open {
                display: flex;
            }
            .nav-links {
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
            }
            .nav-links li a {
                font-size: 1.1rem;
                padding: 14px 20px;
                border-radius: 8px;
            }
            .nav-cta {
                display: none;
            }
            .nav-cta-mobile {
                display: block;
                margin-top: 16px;
            }
            .nav-cta-mobile .btn-nav {
                display: block;
                text-align: center;
                padding: 14px 20px;
                font-size: 1rem;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .info-stream-item {
                flex-direction: column;
                gap: 14px;
            }
            .stream-thumb {
                width: 100%;
                height: 180px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --section-pad-desktop: 40px 0;
            }
            .container-custom {
                padding: 0 14px;
            }
            .category-hero {
                padding-top: 32px;
                padding-bottom: 32px;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .stream-thumb {
                height: 150px;
            }
            .stream-content h3 {
                font-size: 0.98rem;
            }
            .cta-buttons {
                flex-direction: column;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                text-align: center;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .advantage-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .pagination-custom li a,
            .pagination-custom li span {
                min-width: 32px;
                height: 32px;
                font-size: 0.78rem;
                padding: 0 8px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #00E676;
            --primary-dark: #00C853;
            --accent: #FF6D00;
            --bg-main: #0F1115;
            --bg-secondary: #1A1D23;
            --bg-card: #1E232A;
            --text-primary: #F5F7FA;
            --text-secondary: #9AA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(0, 230, 118, 0.18);
            --border-active: rgba(0, 230, 118, 0.6);
            --danger: #FF5252;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 100px;
            --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.5);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
            --font-num: 'Roboto Condensed', 'DIN Alternate', 'Inter', sans-serif;
            --section-pad-desktop: 80px 0;
            --section-pad-tablet: 60px 0;
            --section-pad-mobile: 40px 0;
            --header-height: 64px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.8;
            overflow-x: hidden;
            position: relative;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: var(--section-pad-desktop);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            background: rgba(15, 17, 21, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .site-header.header-scrolled {
            background: rgba(15, 17, 21, 0.97);
            border-bottom: 1px solid var(--border-active);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo-brand:hover {
            color: var(--primary);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0F1115;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-links-wrapper {
            display: flex;
            align-items: center;
            flex: 1;
            justify-content: center;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: color var(--transition-fast), background var(--transition-fast);
            display: block;
            text-decoration: none;
            white-space: nowrap;
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(0, 230, 118, 0.08);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-cta-mobile {
            display: none;
        }

        .btn-nav {
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-nav:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }

        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            transition: background var(--transition-fast);
        }

        .hamburger-toggle:hover {
            background: rgba(0, 230, 118, 0.1);
        }

        /* ========== BANNER / HERO ========== */
        .page-banner {
            position: relative;
            padding: 140px 0 64px;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            min-height: 360px;
            display: flex;
            align-items: flex-end;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 17, 21, 0.65) 0%, rgba(15, 17, 21, 0.85) 60%, var(--bg-main) 100%);
            z-index: 1;
        }

        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .page-banner .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 230, 118, 0.12);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            border: 1px solid var(--border-subtle);
            margin-bottom: 16px;
        }

        .page-banner h1 {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin: 0 0 16px;
        }

        .page-banner .banner-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 620px;
            line-height: 1.8;
            margin: 0;
        }

        /* ========== FILTER BAR ========== */
        .filter-bar {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 16px 0;
            position: sticky;
            top: var(--header-height);
            z-index: 100;
        }

        .filter-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .filter-chips {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .filter-chips li a {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: var(--radius-pill);
            background: var(--bg-card);
            color: var(--text-secondary);
            font-size: 0.82rem;
            font-weight: 500;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .filter-chips li a:hover,
        .filter-chips li a.active {
            background: rgba(0, 230, 118, 0.12);
            color: var(--primary);
            border-color: var(--border-active);
        }

        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .filter-sort label {
            color: var(--text-muted);
            font-size: 0.8rem;
            white-space: nowrap;
        }

        .filter-sort select {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.82rem;
            font-family: var(--font-cn);
            cursor: pointer;
            transition: border-color var(--transition-fast);
            min-width: 130px;
        }

        .filter-sort select:focus {
            border-color: var(--primary);
            outline: none;
        }

        /* ========== ALTERNATE LAYOUT ========== */
        .alt-section {
            padding: var(--section-pad-desktop);
        }

        .alt-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 64px;
        }

        .alt-row:last-child {
            margin-bottom: 0;
        }

        .alt-row.reverse {
            direction: rtl;
        }

        .alt-row.reverse > * {
            direction: ltr;
        }

        .alt-image {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-lg);
            aspect-ratio: 16/10;
            background: var(--bg-card);
        }

        .alt-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
            transition: transform var(--transition-slow);
        }

        .alt-image:hover img {
            transform: scale(1.04);
        }

        .alt-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15, 17, 21, 0.75) 0%, rgba(15, 17, 21, 0.15) 50%, transparent 100%);
            border-radius: var(--radius-lg);
            pointer-events: none;
        }

        .alt-image .img-badge {
            position: absolute;
            bottom: 16px;
            left: 16px;
            z-index: 3;
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .alt-image .img-badge span {
            background: rgba(15, 17, 21, 0.85);
            backdrop-filter: blur(8px);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.75rem;
            font-weight: 600;
            border: 1px solid var(--border-subtle);
        }

        .alt-content .content-tag {
            display: inline-block;
            background: rgba(0, 230, 118, 0.1);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 12px;
            border: 1px solid var(--border-subtle);
        }

        .alt-content h2 {
            font-size: 1.75rem;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            margin: 0 0 14px;
        }

        .alt-content .content-summary {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .alt-content .content-points {
            list-style: none;
            margin: 0 0 20px;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .alt-content .content-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.7;
        }

        .alt-content .content-points li i {
            color: var(--primary);
            font-size: 0.85rem;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .alt-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            color: var(--text-muted);
            font-size: 0.78rem;
            flex-wrap: wrap;
        }

        .alt-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .alt-meta i {
            color: var(--primary);
            font-size: 0.7rem;
        }

        /* ========== BUTTONS ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 0.9rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 22px;
            font-size: 0.88rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--border-active);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(0, 230, 118, 0.1);
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-outline-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--accent);
            border: 1px solid rgba(255, 109, 0, 0.5);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-outline-accent:hover {
            background: rgba(255, 109, 0, 0.1);
            border-color: var(--accent);
            color: var(--accent);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #0F1115;
            margin: 0 0 8px;
            line-height: 1.3;
        }

        .cta-section p {
            color: rgba(15, 17, 21, 0.75);
            margin: 0;
            font-size: 0.95rem;
            line-height: 1.7;
            max-width: 500px;
        }

        .cta-section .btn-cta-dark {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 0.92rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: #0F1115;
            color: var(--primary);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .cta-section .btn-cta-dark:hover {
            background: #1A1D23;
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
            transform: translateY(-2px);
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: var(--section-pad-desktop);
            background: var(--bg-secondary);
        }

        .faq-section .section-heading {
            text-align: center;
            margin-bottom: 40px;
        }

        .faq-section .section-heading h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px;
            line-height: 1.3;
        }

        .faq-section .section-heading p {
            color: var(--text-secondary);
            margin: 0;
            font-size: 0.92rem;
        }

        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .accordion-item:hover {
            border-color: var(--border-active);
        }

        .accordion-item .accordion-title {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 18px 20px;
            width: 100%;
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color var(--transition-fast);
            font-family: var(--font-cn);
            line-height: 1.6;
        }

        .accordion-item .accordion-title:hover {
            color: var(--primary);
        }

        .accordion-item .accordion-title .fa-chevron-down {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .accordion-item.is-active .accordion-title .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .accordion-item .accordion-content {
            display: none;
            padding: 0 20px 18px;
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.85;
        }

        .accordion-item.is-active .accordion-content {
            display: block;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .logo-brand {
            margin-bottom: 12px;
            font-size: 1.1rem;
        }

        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.82rem;
            line-height: 1.8;
            margin: 0;
            max-width: 300px;
        }

        .footer-col h4 {
            color: var(--text-primary);
            font-size: 0.9rem;
            font-weight: 600;
            margin: 0 0 14px;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.82rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-subscribe p {
            color: var(--text-muted);
            font-size: 0.8rem;
            line-height: 1.6;
            margin: 0 0 12px;
        }

        .subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .subscribe-form input {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-family: var(--font-cn);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }

        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }

        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
            outline: none;
        }

        .subscribe-form button {
            padding: 10px 18px;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            font-family: var(--font-cn);
            white-space: nowrap;
        }

        .subscribe-form button:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            color: var(--text-muted);
            font-size: 0.75rem;
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-bottom-links a {
            color: var(--text-muted);
            font-size: 0.75rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--primary);
        }

        .footer-bottom-links span {
            color: var(--text-muted);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .alt-row {
                gap: 28px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .nav-links li a {
                padding: 8px 8px;
                font-size: 0.8rem;
            }

            .page-banner h1 {
                font-size: 2.1rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad-desktop: 60px 0;
                --section-pad-tablet: 50px 0;
                --section-pad-mobile: 40px 0;
            }

            .hamburger-toggle {
                display: block;
            }

            .nav-links-wrapper {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--bg-main);
                flex-direction: column;
                align-items: flex-start;
                justify-content: flex-start;
                padding: 32px 20px;
                transform: translateX(100%);
                transition: transform var(--transition-base);
                z-index: 999;
                overflow-y: auto;
            }

            .nav-links-wrapper.open {
                transform: translateX(0);
            }

            .nav-links {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                width: 100%;
            }

            .nav-links li {
                width: 100%;
            }

            .nav-links li a {
                font-size: 1.05rem;
                padding: 14px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }

            .nav-cta {
                display: none;
            }

            .nav-cta-mobile {
                display: block;
                width: 100%;
                margin-top: 20px;
            }

            .nav-cta-mobile .btn-nav {
                display: block;
                width: 100%;
                text-align: center;
                padding: 14px 20px;
                font-size: 0.95rem;
            }

            .alt-row {
                grid-template-columns: 1fr;
                gap: 20px;
                margin-bottom: 40px;
            }

            .alt-row.reverse {
                direction: ltr;
            }

            .alt-image {
                aspect-ratio: 16/9;
            }

            .alt-content h2 {
                font-size: 1.4rem;
            }

            .page-banner {
                padding: 110px 0 40px;
                min-height: 260px;
            }

            .page-banner h1 {
                font-size: 1.7rem;
            }

            .page-banner .banner-subtitle {
                font-size: 0.9rem;
            }

            .filter-bar {
                top: var(--header-height);
                padding: 10px 0;
            }

            .filter-bar-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .filter-chips {
                gap: 6px;
            }

            .filter-chips li a {
                padding: 6px 12px;
                font-size: 0.75rem;
            }

            .cta-section {
                padding: 48px 0;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .cta-section .cta-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }

            .faq-section .section-heading h2 {
                font-size: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.4rem;
            }

            .alt-content h2 {
                font-size: 1.2rem;
            }

            .alt-content .content-points li {
                font-size: 0.82rem;
            }

            .alt-meta {
                gap: 10px;
                font-size: 0.72rem;
            }

            .btn-primary,
            .btn-secondary {
                padding: 10px 18px;
                font-size: 0.82rem;
            }

            .filter-chips li a {
                padding: 5px 10px;
                font-size: 0.7rem;
            }

            .filter-sort select {
                min-width: 110px;
                font-size: 0.75rem;
                padding: 7px 10px;
            }
        }

/* roulang page: category6 */
/* ========== Design System ========== */
        :root {
            --primary: #00E676;
            --primary-dark: #00C853;
            --accent: #FF6D00;
            --bg-main: #0F1115;
            --bg-secondary: #1A1D23;
            --bg-card: #1E232A;
            --bg-elevated: #232830;
            --text-primary: #F5F7FA;
            --text-secondary: #9AA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(0, 230, 118, 0.18);
            --border-active: rgba(0, 230, 118, 0.6);
            --danger: #FF5252;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 100px;
            --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 4px 16px rgba(0, 230, 118, 0.25);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
            --font-num: 'Roboto Condensed', 'DIN Alternate', 'Inter', sans-serif;
            --section-pad-desktop: 80px 0;
            --section-pad-tablet: 60px 0;
            --section-pad-mobile: 40px 0;
            --header-height: 64px;
        }

        /* ========== Base & Reset ========== */
        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.8;
            overflow-x: hidden;
            position: relative;
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
        }

        a:hover {
            color: var(--accent);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: var(--section-pad-desktop);
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            background: transparent;
            transition: background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            border-bottom: 1px solid transparent;
        }

        .site-header.header-scrolled {
            background: rgba(15, 17, 21, 0.96);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo-brand:hover {
            color: var(--primary);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0F1115;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li {
            margin: 0;
        }

        .nav-links li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            transition: color var(--transition-fast), background var(--transition-fast);
            display: block;
            text-decoration: none;
            white-space: nowrap;
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(0, 230, 118, 0.08);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-nav {
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-nav:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }

        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            transition: background var(--transition-fast);
        }

        .hamburger-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-cta-mobile {
            display: none;
        }

        /* ========== Category Hero ========== */
        .category-hero {
            position: relative;
            min-height: 360px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 60px;
            margin-top: 0;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 17, 21, 0.88) 20%, rgba(15, 17, 21, 0.55) 65%, rgba(15, 17, 21, 0.82) 100%);
            z-index: 1;
        }

        .category-hero .container-custom {
            position: relative;
            z-index: 2;
        }

        .category-hero-content {
            max-width: 760px;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 230, 118, 0.12);
            border: 1px solid var(--border-active);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
        }

        .category-hero h1 {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.5px;
            color: var(--text-primary);
            margin: 0 0 16px 0;
        }

        .category-hero h1 span {
            color: var(--primary);
        }

        .category-hero .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 24px 0;
            max-width: 600px;
        }

        .hero-stats-row {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .hero-stat-item i {
            color: var(--primary);
            font-size: 0.9rem;
        }

        .hero-stat-item strong {
            font-family: var(--font-num);
            font-size: 1.2rem;
            color: var(--text-primary);
        }

        /* ========== Filter Bar ========== */
        .filter-bar-section {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 16px 0;
            position: sticky;
            top: var(--header-height);
            z-index: 100;
            transition: top var(--transition-base);
        }

        .filter-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .filter-chips {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.82rem;
            font-weight: 500;
            background: var(--bg-card);
            color: var(--text-secondary);
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
            user-select: none;
        }

        .filter-chip:hover {
            border-color: var(--border-active);
            color: var(--primary);
            background: rgba(0, 230, 118, 0.06);
        }

        .filter-chip.active {
            background: var(--primary);
            color: #0F1115;
            border-color: var(--primary);
            font-weight: 700;
        }

        .sort-select-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sort-select-wrap label {
            font-size: 0.82rem;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .sort-select-wrap select {
            background: var(--bg-card);
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 0.85rem;
            font-family: var(--font-cn);
            cursor: pointer;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            min-width: 140px;
            appearance: none;
            -webkit-appearance: none;
            -moz-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%239AA3AF' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 32px;
        }

        .sort-select-wrap select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
            outline: none;
        }

        .sort-select-wrap select option {
            background: var(--bg-card);
            color: var(--text-primary);
        }

        /* ========== Timeline Section ========== */
        .timeline-section {
            background: var(--bg-main);
            padding: 64px 0 80px;
        }

        .timeline-section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }

        .timeline-section-header h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin: 0 0 8px 0;
        }

        .timeline-section-header p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0;
            max-width: 480px;
        }

        .timeline-count {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .timeline-count i {
            color: var(--primary);
        }

        .timeline-container {
            position: relative;
            padding-left: 36px;
        }

        .timeline-container::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--border-active), var(--border-subtle), var(--border-subtle));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            padding: 0 0 0 24px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -36px;
            top: 6px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--bg-main);
            border: 3px solid var(--primary);
            z-index: 1;
            box-shadow: 0 0 0 4px rgba(0, 230, 118, 0.12);
        }

        .timeline-item.featured .timeline-dot {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(255, 109, 0, 0.15);
        }

        .timeline-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .timeline-card:hover {
            border-color: var(--border-active);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .timeline-card-img {
            width: 140px;
            height: 90px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-elevated);
        }

        .timeline-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }

        .timeline-card-body {
            flex: 1;
            min-width: 0;
        }

        .timeline-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }

        .timeline-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            font-family: var(--font-num);
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .timeline-date i {
            color: var(--primary);
            font-size: 0.7rem;
        }

        .timeline-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            background: rgba(0, 230, 118, 0.1);
            color: var(--primary);
            border: 1px solid var(--border-subtle);
        }

        .timeline-tag.hot {
            background: rgba(255, 109, 0, 0.12);
            color: var(--accent);
            border-color: rgba(255, 109, 0, 0.3);
        }

        .timeline-card-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 8px 0;
            line-height: 1.4;
            letter-spacing: -0.01em;
        }

        .timeline-card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 12px 0;
        }

        .timeline-card-stats {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .timeline-stat {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .timeline-stat i {
            font-size: 0.7rem;
            color: var(--primary);
        }

        .timeline-stat strong {
            font-family: var(--font-num);
            color: var(--text-secondary);
            font-weight: 600;
        }

        /* ========== Community Highlights ========== */
        .community-highlights {
            background: var(--bg-secondary);
            padding: 64px 0;
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .community-highlights .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px 0;
            letter-spacing: -0.02em;
        }

        .community-highlights .section-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0 0 40px 0;
            max-width: 560px;
        }

        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .highlight-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-fast);
        }

        .highlight-card:hover {
            border-color: var(--border-active);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }

        .highlight-card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(0, 230, 118, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.2rem;
            margin-bottom: 16px;
        }

        .highlight-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 8px 0;
        }

        .highlight-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== FAQ Section ========== */
        .faq-section {
            background: var(--bg-main);
            padding: 64px 0 40px;
        }

        .faq-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px 0;
            letter-spacing: -0.02em;
        }

        .faq-section .section-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0 0 36px 0;
            max-width: 560px;
        }

        .faq-accordion {
            max-width: 800px;
        }

        .faq-accordion .accordion-item {
            margin-bottom: 12px;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            background: var(--bg-card);
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .faq-accordion .accordion-item:hover {
            border-color: var(--border-active);
        }

        .faq-accordion .accordion-title {
            background: transparent;
            color: var(--text-primary);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-cn);
            transition: color var(--transition-fast);
        }

        .faq-accordion .accordion-title:hover {
            color: var(--primary);
        }

        .faq-accordion .accordion-title i {
            color: var(--primary);
            font-size: 0.8rem;
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-accordion .accordion-title.is-active i {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-accordion .accordion-content {
            padding: 0 22px 20px;
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.75;
            display: none;
        }

        .faq-accordion .accordion-content.is-active {
            display: block;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 200, 83, 0.08), rgba(0, 230, 118, 0.04));
            border-top: 1px solid var(--border-subtle);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(0, 230, 118, 0.06);
            pointer-events: none;
        }

        .cta-section .container-custom {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px 0;
            letter-spacing: -0.02em;
        }

        .cta-section p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0 auto 28px;
            max-width: 500px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary-large {
            padding: 14px 32px;
            font-size: 0.95rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0F1115;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-primary-large:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 109, 0, 0.4);
            transform: translateY(-2px);
        }

        .btn-secondary-large {
            padding: 14px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--border-active);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-secondary-large:hover {
            background: rgba(0, 230, 118, 0.1);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .logo-brand {
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 14px 0;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-subscribe p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0 0 12px 0;
            line-height: 1.6;
        }

        .subscribe-form {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .subscribe-form input {
            flex: 1;
            min-width: 160px;
            background: var(--bg-main);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            color: var(--text-primary);
            font-size: 0.85rem;
            font-family: var(--font-cn);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }

        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
            outline: none;
        }

        .subscribe-form button {
            padding: 10px 18px;
            background: var(--primary);
            color: #0F1115;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.82rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            font-family: var(--font-cn);
        }

        .subscribe-form button:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 109, 0, 0.35);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .footer-bottom span {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-bottom-links a {
            font-size: 0.78rem;
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--primary);
        }

        .footer-bottom-links span {
            color: var(--text-muted);
            font-size: 0.78rem;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .section-padding {
                padding: var(--section-pad-tablet);
            }
            .highlights-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .timeline-card {
                flex-direction: column;
            }
            .timeline-card-img {
                width: 100%;
                height: 160px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 58px;
            }
            .section-padding {
                padding: var(--section-pad-mobile);
            }
            .hamburger-toggle {
                display: block;
            }
            .nav-links-wrapper {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(15, 17, 21, 0.98);
                display: none;
                flex-direction: column;
                padding: 32px 20px;
                z-index: 999;
                overflow-y: auto;
            }
            .nav-links-wrapper.is-open {
                display: flex;
            }
            .nav-links {
                flex-direction: column;
                gap: 8px;
                width: 100%;
            }
            .nav-links li a {
                font-size: 1.2rem;
                padding: 14px 16px;
                border-radius: 8px;
            }
            .nav-cta-mobile {
                display: block;
                margin-top: 24px;
            }
            .nav-cta-mobile .btn-nav {
                width: 100%;
                padding: 14px 24px;
                font-size: 1rem;
                text-align: center;
            }
            .nav-cta {
                display: none;
            }
            .category-hero {
                min-height: 280px;
                padding-top: calc(var(--header-height) + 30px);
                padding-bottom: 40px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-subtitle {
                font-size: 0.92rem;
            }
            .hero-stats-row {
                gap: 14px;
            }
            .filter-bar-section {
                position: static;
                top: auto;
            }
            .filter-bar-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .timeline-section {
                padding: 40px 0 56px;
            }
            .timeline-section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                margin-bottom: 32px;
            }
            .timeline-section-header h2 {
                font-size: 1.4rem;
            }
            .timeline-container {
                padding-left: 26px;
            }
            .timeline-container::before {
                left: 5px;
            }
            .timeline-dot {
                left: -26px;
                width: 14px;
                height: 14px;
            }
            .timeline-item {
                padding-left: 14px;
                margin-bottom: 28px;
            }
            .timeline-card {
                padding: 18px;
                gap: 14px;
            }
            .timeline-card-img {
                height: 120px;
            }
            .timeline-card-body h3 {
                font-size: 1rem;
            }
            .highlights-grid {
                grid-template-columns: 1fr;
            }
            .community-highlights {
                padding: 40px 0;
            }
            .community-highlights .section-title {
                font-size: 1.35rem;
            }
            .faq-section {
                padding: 40px 0 28px;
            }
            .faq-section .section-title {
                font-size: 1.35rem;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .hero-stat-item strong {
                font-size: 1rem;
            }
            .filter-chips {
                gap: 6px;
            }
            .filter-chip {
                font-size: 0.75rem;
                padding: 6px 12px;
            }
            .timeline-card-body p {
                font-size: 0.82rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary-large,
            .btn-secondary-large {
                width: 100%;
                justify-content: center;
            }
        }