/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5a9b;
            --primary-dark: #0f2240;
            --primary-rgb: 26, 58, 107;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --accent-rgb: 232, 168, 56;
            --bg: #ffffff;
            --bg-alt: #f5f7fa;
            --bg-dark: #0f2240;
            --bg-warm: #fdf8f0;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-lighter: #9ca3af;
            --text-white: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f0f5;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
            --shadow-accent: 0 4px 20px rgba(232, 168, 56, 0.35);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
            --dock-max-width: 900px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-light);
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Utility ===== */
        .section-pad {
            padding: 80px 0;
        }
        .section-pad-sm {
            padding: 48px 0;
        }
        .text-center {
            text-align: center;
        }
        .text-accent {
            color: var(--accent);
        }
        .text-white {
            color: var(--text-white);
        }
        .section-title {
            margin-bottom: 12px;
            font-weight: 800;
        }
        .section-sub {
            max-width: 640px;
            margin: 0 auto 48px;
            color: var(--text-light);
            font-size: 1.05rem;
            text-align: center;
        }
        .section-sub-left {
            max-width: 640px;
            margin-bottom: 36px;
            color: var(--text-light);
            font-size: 1.05rem;
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: rgba(var(--accent-rgb), 0.15);
            color: var(--accent-dark);
            margin-bottom: 16px;
        }
        .badge-primary {
            background: rgba(var(--primary-rgb), 0.1);
            color: var(--primary);
        }
        .badge-white {
            background: rgba(255, 255, 255, 0.2);
            color: var(--text-white);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.5);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-outline-dark {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline-dark:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 1.1rem;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.9rem;
        }
        .card {
            background: var(--bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }
        .card-body {
            padding: 24px;
        }
        .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(var(--primary-rgb), 0.08);
            color: var(--primary);
            margin-bottom: 10px;
        }
        .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-text {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .card-meta {
            font-size: 0.82rem;
            color: var(--text-lighter);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 12px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .gap-16 {
            gap: 16px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mt-48 {
            margin-top: 48px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }

        /* ===== Floating Dock Nav ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            justify-content: center;
            pointer-events: none;
            padding: 0 20px;
        }
        .nav-dock {
            pointer-events: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--dock-max-width);
            width: 100%;
            padding: 0 28px;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: var(--radius-xl);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }
        .nav-logo {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-logo i {
            color: var(--accent);
            font-size: 1.4rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.06);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.10);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-actions .btn-nav {
            padding: 8px 22px;
            border-radius: 100px;
            font-size: 0.88rem;
            font-weight: 600;
            background: var(--primary);
            color: var(--text-white);
            transition: all var(--transition);
            border: none;
        }
        .nav-actions .btn-nav:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.3);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            padding: 4px 8px;
            cursor: pointer;
        }

        /* ===== Mobile Nav ===== */
        .mobile-menu {
            display: none;
            position: fixed;
            top: calc(16px + var(--nav-height) + 12px);
            left: 20px;
            right: 20px;
            z-index: 999;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 20px 24px;
            border: 1px solid rgba(255, 255, 255, 0.5);
            flex-direction: column;
            gap: 4px;
            opacity: 0;
            transform: translateY(-12px) scale(0.96);
            transition: all 0.3s ease;
            pointer-events: none;
        }
        .mobile-menu.open {
            opacity: 1;
            transform: translateY(0) scale(1);
            pointer-events: auto;
            display: flex;
        }
        .mobile-menu a {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.06);
        }
        .mobile-menu .btn-mobile-cta {
            margin-top: 8px;
            padding: 14px 20px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: var(--text-white);
            font-weight: 600;
            text-align: center;
        }
        .mobile-menu .btn-mobile-cta:hover {
            background: var(--primary-light);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            background: linear-gradient(160deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(232, 168, 56, 0.10) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 60%, rgba(26, 58, 107, 0.4) 0%, transparent 60%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            text-align: center;
            color: var(--text-white);
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-white);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: clamp(2.4rem, 6vw, 4rem);
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 60%, var(--accent-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        /* ===== Features / Intro ===== */
        .features {
            background: var(--bg);
        }
        .features-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .feature-card {
            padding: 36px 28px;
            border-radius: var(--radius);
            background: var(--bg);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--text-white);
            background: var(--primary);
        }
        .feature-icon.gold {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .feature-icon.light {
            background: rgba(var(--primary-rgb), 0.1);
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        /* ===== Categories ===== */
        .categories {
            background: var(--bg-alt);
        }
        .cat-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .cat-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .cat-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
        }
        .cat-card .cat-body {
            padding: 20px 24px 24px;
        }
        .cat-card .cat-body h3 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .cat-card .cat-body p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .cat-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary);
            margin-top: 12px;
            transition: gap var(--transition);
        }
        .cat-card .cat-link:hover {
            gap: 12px;
            color: var(--accent-dark);
        }

        /* ===== Latest News ===== */
        .latest-news {
            background: var(--bg);
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .news-card {
            display: flex;
            gap: 20px;
            padding: 20px;
            border-radius: var(--radius);
            background: var(--bg);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            border-color: transparent;
        }
        .news-card .news-thumb {
            width: 160px;
            min-height: 120px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-alt);
        }
        .news-card .news-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .news-card .news-info .news-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(var(--accent-rgb), 0.15);
            color: var(--accent-dark);
            margin-bottom: 8px;
            align-self: flex-start;
        }
        .news-card .news-info h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-card .news-info p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-info .news-date {
            font-size: 0.78rem;
            color: var(--text-lighter);
            margin-top: 8px;
        }
        .empty-news {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-light);
            font-size: 1rem;
            background: var(--bg-alt);
            border-radius: var(--radius);
        }

        /* ===== Stats / Data ===== */
        .data-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .data-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .data-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 32px;
            text-align: center;
        }
        .data-item .num {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
        }
        .data-item .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }
        .data-item .desc {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
            margin-top: 4px;
        }

        /* ===== Process / Steps ===== */
        .process {
            background: var(--bg-warm);
        }
        .process-steps {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius);
            background: var(--bg);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            margin: 0 auto 16px;
        }
        .step-card h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq {
            background: var(--bg);
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
            background: var(--bg);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(160deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 32px;
            font-size: 1.05rem;
        }
        .cta-content .btn {
            font-size: 1.08rem;
            padding: 16px 48px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .nav-logo {
            color: var(--text-white);
            margin-bottom: 12px;
            font-size: 1.1rem;
        }
        .footer-brand .nav-logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
            margin-bottom: 0;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 820px) {
            .features-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .news-card .news-thumb {
                width: 120px;
                min-height: 90px;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat-item .num {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                top: 12px;
                padding: 0 16px;
            }
            .nav-dock {
                padding: 0 18px;
                height: 64px;
                border-radius: var(--radius-lg);
            }
            .nav-links {
                display: none;
            }
            .nav-actions .btn-nav {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .nav-logo {
                font-size: 1rem;
            }
            .nav-logo i {
                font-size: 1.2rem;
            }
            .hero {
                min-height: 90vh;
                padding: 100px 20px 60px;
            }
            .hero h1 {
                font-size: clamp(2rem, 8vw, 2.8rem);
            }
            .hero p {
                font-size: 0.95rem;
            }
            .hero-actions .btn {
                padding: 10px 24px;
                font-size: 0.9rem;
            }
            .section-pad {
                padding: 56px 0;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cat-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .grid-3 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-4 {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .data-item .num {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .news-card {
                flex-direction: column;
                padding: 16px;
            }
            .news-card .news-thumb {
                width: 100%;
                min-height: 160px;
            }
            .step-card {
                padding: 24px 16px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .mobile-menu.open {
                display: flex;
            }
        }

        @media (max-width: 520px) {
            .site-header {
                top: 8px;
                padding: 0 12px;
            }
            .nav-dock {
                padding: 0 14px;
                height: 56px;
                border-radius: var(--radius);
            }
            .nav-logo {
                font-size: 0.88rem;
                gap: 6px;
            }
            .nav-logo i {
                font-size: 1rem;
            }
            .hero {
                min-height: 85vh;
                padding: 80px 16px 40px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
                margin-top: 32px;
                padding-top: 24px;
            }
            .section-pad {
                padding: 40px 0;
            }
            .section-sub {
                font-size: 0.92rem;
                margin-bottom: 32px;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .data-item .num {
                font-size: 1.6rem;
            }
            .data-item .label {
                font-size: 0.82rem;
            }
            .btn-lg {
                padding: 14px 32px;
                font-size: 1rem;
            }
            .cta-content .btn {
                padding: 14px 32px;
                font-size: 1rem;
            }
            .footer-grid {
                gap: 20px;
            }
            .footer-brand p {
                font-size: 0.82rem;
            }
            .mobile-menu {
                left: 12px;
                right: 12px;
                padding: 16px 18px;
            }
            .mobile-menu a {
                padding: 10px 14px;
                font-size: 0.92rem;
            }
            .news-card .news-thumb {
                min-height: 120px;
            }
        }

        /* ===== Focus visible ===== */
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Smooth scroll offset ===== */
        .scroll-offset {
            scroll-margin-top: 100px;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #fae0e4;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-glow: rgba(244, 162, 97, 0.25);
            --bg: #ffffff;
            --bg-alt: #f8f9fa;
            --bg-dark: #0d1b2a;
            --text: #1a1a2e;
            --text-light: #4a4a6a;
            --text-muted: #8a8aaa;
            --text-inverse: #ffffff;
            --border: #e8e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.10);
            --shadow-dock: 0 4px 20px rgba(0, 0, 0, 0.06);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--nav-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Site Header / Dock Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 999;
            height: var(--nav-height);
            display: flex;
            justify-content: center;
            align-items: center;
            background: transparent;
            pointer-events: none;
            padding: 0 24px;
        }
        .nav-dock {
            pointer-events: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1100px;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-radius: 60px;
            padding: 10px 24px 10px 28px;
            box-shadow: var(--shadow-dock);
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .nav-dock:hover {
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text);
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: -0.3px;
        }
        .nav-logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .nav-logo span {
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            color: var(--text-light);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--text);
            background: rgba(230, 57, 70, 0.06);
        }
        .nav-links a.active {
            color: var(--text-inverse);
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.35);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-nav {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            color: var(--text-inverse) !important;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(29, 53, 87, 0.25);
            transition: var(--transition);
        }
        .btn-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(29, 53, 87, 0.35);
        }
        .btn-nav i {
            font-size: 1rem;
        }
        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text);
            padding: 4px 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== Mobile Nav ===== */
        @media (max-width: 768px) {
            .site-header {
                padding: 0 12px;
            }
            .nav-dock {
                padding: 8px 16px 8px 20px;
                border-radius: 40px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: calc(var(--nav-height) - 8px);
                left: 12px;
                right: 12px;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: var(--radius);
                box-shadow: var(--shadow-hover);
                flex-direction: column;
                padding: 16px;
                gap: 6px;
                border: 1px solid var(--border);
                z-index: 100;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                text-align: center;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav-toggle {
                display: block;
            }
            .nav-actions .btn-nav {
                display: none;
            }
            .nav-actions .btn-nav.mobile-show {
                display: inline-flex;
                font-size: 0.8rem;
                padding: 6px 14px;
            }
        }
        @media (max-width: 520px) {
            .nav-logo span {
                font-size: 1rem;
            }
            .nav-logo i {
                font-size: 1.3rem;
            }
            .nav-dock {
                padding: 6px 12px 6px 16px;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 80px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a3a 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 80% 20%, rgba(230, 57, 70, 0.15), transparent 60%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-inverse);
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .page-banner h1 span {
            background: linear-gradient(135deg, var(--accent), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            line-height: 1.7;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 24px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb i {
            font-size: 0.7rem;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 60px 0 60px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner p {
                font-size: 0.92rem;
            }
        }

        /* ===== Section Common ===== */
        section {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 48px;
            line-height: 1.7;
        }
        .section-center {
            text-align: center;
        }
        .section-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        .section-label {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        @media (max-width: 768px) {
            section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== Guide Card ===== */
        .guide-card {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .guide-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .guide-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .guide-card .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .guide-card .card-desc {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
        }
        .guide-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            border-top: 1px solid var(--border);
            background: var(--bg-alt);
        }
        .guide-card .card-footer .meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .guide-card .card-footer .btn-text {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .guide-card .card-footer .btn-text:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        /* ===== Featured Article (图文) ===== */
        .featured-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            background: var(--bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .featured-block .fb-img {
            width: 100%;
            height: 100%;
            min-height: 320px;
            object-fit: cover;
            border-radius: 0;
        }
        .featured-block .fb-body {
            padding: 48px 48px 48px 0;
        }
        .featured-block .fb-body .fb-tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: var(--accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .featured-block .fb-body h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .featured-block .fb-body p {
            font-size: 0.98rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .featured-block .fb-body .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            color: var(--text-inverse);
            font-weight: 600;
            font-size: 0.95rem;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.25);
            transition: var(--transition);
        }
        .featured-block .fb-body .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.35);
        }

        @media (max-width: 900px) {
            .featured-block {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .featured-block .fb-body {
                padding: 32px 24px;
            }
            .featured-block .fb-img {
                min-height: 220px;
                max-height: 300px;
                width: 100%;
            }
            .featured-block .fb-body h3 {
                font-size: 1.3rem;
            }
        }

        /* ===== Timeline / Roadmap ===== */
        .timeline {
            position: relative;
            padding-left: 40px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 16px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, var(--primary), var(--secondary), var(--accent));
            border-radius: 4px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            padding-left: 32px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 6px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid var(--bg);
            box-shadow: 0 0 0 3px var(--primary), var(--shadow);
        }
        .timeline-item .tl-year {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
            margin-bottom: 6px;
        }
        .timeline-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .timeline-item p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        @media (max-width: 640px) {
            .timeline {
                padding-left: 28px;
            }
            .timeline-item {
                padding-left: 20px;
            }
            .timeline-item::before {
                left: -22px;
                width: 12px;
                height: 12px;
            }
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-item .stat-num {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            font-weight: 500;
        }
        @media (max-width: 900px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            text-align: left;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--secondary), #0d1b2a);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-block .container {
            position: relative;
            z-index: 1;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-inverse);
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-block .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 48px;
            border-radius: 60px;
            background: var(--primary);
            color: var(--text-inverse);
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.35);
            transition: var(--transition);
        }
        .cta-block .btn-cta:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(230, 57, 70, 0.45);
            background: var(--primary-dark);
        }
        @media (max-width: 768px) {
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block .btn-cta {
                padding: 14px 32px;
                font-size: 0.95rem;
            }
        }

        /* ===== Tags Cloud ===== */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tags-cloud .tag {
            padding: 6px 20px;
            border-radius: 40px;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--text-light);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .tags-cloud .tag:hover {
            background: var(--primary);
            color: var(--text-inverse);
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }
        .site-footer .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .nav-logo {
            color: var(--text-inverse);
            margin-bottom: 16px;
        }
        .footer-brand .nav-logo i {
            color: var(--primary);
        }
        .footer-brand .nav-logo span {
            background: linear-gradient(135deg, #fff, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer-col h4 {
            color: var(--text-inverse);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.2rem;
            padding: 0;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-inverse);
            padding: 0;
            transform: translateY(-3px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Utility ===== */
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mt-48 {
            margin-top: 48px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-16 {
            gap: 16px;
        }
        .text-center {
            text-align: center;
        }
        .bg-alt {
            background: var(--bg-alt);
        }
        .bg-dark-section {
            background: var(--bg-dark);
        }
        .bg-dark-section .section-title {
            color: var(--text-inverse);
        }
        .bg-dark-section .section-subtitle {
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== Focus & Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Smooth Scroll Offset ===== */
        .scroll-offset {
            scroll-margin-top: 100px;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #d4a853;
            --primary-dark: #b8913a;
            --primary-light: #f0d48a;
            --primary-gradient: linear-gradient(135deg, #d4a853 0%, #b8913a 100%);
            --secondary: #1a1a2e;
            --secondary-light: #2a2a4e;
            --accent: #e85d3a;
            --bg-dark: #0d0d1a;
            --bg-card: #1a1a30;
            --bg-card-hover: #222240;
            --bg-body: #0a0a18;
            --text-primary: #f5f0e8;
            --text-secondary: #c8c0b8;
            --text-muted: #8a8a9a;
            --text-light: #ffffff;
            --border-color: #2a2a4a;
            --border-light: #3a3a5a;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 30px rgba(212,168,83,0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --spacing-section: 100px;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button { font-family: inherit; cursor: pointer; border: none; background: none; }
        input, textarea { font-family: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-light); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--bg-dark); }
        ::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--primary-dark); }

        /* ===== Header / Dock Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 24px;
            pointer-events: none;
        }
        .nav-dock {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(13, 13, 26, 0.82);
            backdrop-filter: blur(20px) saturate(1.2);
            -webkit-backdrop-filter: blur(20px) saturate(1.2);
            border: 1px solid var(--border-color);
            border-radius: 60px;
            padding: 10px 20px 10px 28px;
            box-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(212,168,83,0.05);
            pointer-events: auto;
            transition: var(--transition);
        }
        .nav-dock:hover { border-color: var(--border-light); box-shadow: 0 8px 50px rgba(0,0,0,0.6), 0 0 0 1px rgba(212,168,83,0.1); }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-light);
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.5px;
        }
        .nav-logo i { color: var(--primary); font-size: 1.3rem; }
        .nav-logo span { background: var(--primary-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 30px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--text-light); background: rgba(255,255,255,0.06); }
        .nav-links a.active {
            color: var(--text-light);
            background: rgba(212,168,83,0.15);
            box-shadow: 0 0 20px rgba(212,168,83,0.05);
        }
        .nav-actions { display: flex; align-items: center; gap: 12px; }
        .btn-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: 30px;
            background: var(--primary-gradient);
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.85rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(212,168,83,0.25);
        }
        .btn-nav:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(212,168,83,0.35); color: var(--secondary); }
        .btn-nav i { font-size: 0.9rem; }
        .nav-toggle { display: none; padding: 8px 12px; color: var(--text-primary); font-size: 1.4rem; border-radius: 8px; transition: var(--transition); }
        .nav-toggle:hover { background: rgba(255,255,255,0.06); }

        /* ===== Main Content ===== */
        .main-content { padding-top: var(--nav-height); }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10,10,24,0.7) 0%, rgba(10,10,24,0.85) 60%, var(--bg-body) 100%);
            z-index: 1;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 0%, rgba(212,168,83,0.08) 0%, transparent 70%);
            z-index: 1;
        }
        .article-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }
        .article-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 30px;
            background: rgba(212,168,83,0.15);
            border: 1px solid rgba(212,168,83,0.2);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 20px;
            backdrop-filter: blur(10px);
        }
        .article-hero .hero-badge i { font-size: 0.75rem; }
        .article-hero h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            margin-bottom: 16px;
            line-height: 1.25;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .article-hero .hero-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .article-hero .hero-meta span { display: flex; align-items: center; gap: 6px; }
        .article-hero .hero-meta i { color: var(--primary); font-size: 0.8rem; }
        .article-hero .hero-excerpt {
            margin-top: 20px;
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        /* ===== Article Body ===== */
        .article-body-wrap {
            padding: 60px 0 40px;
            position: relative;
        }
        .article-body-inner {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-content h2, .article-content h3, .article-content h4 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--text-light);
        }
        .article-content p { margin-bottom: 1.2rem; }
        .article-content img { border-radius: var(--radius-md); margin: 1.5rem 0; box-shadow: var(--shadow-md); }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(212,168,83,0.06);
            padding: 16px 24px;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content ul, .article-content ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        .article-content ul li { list-style: disc; margin-bottom: 0.4rem; }
        .article-content ol li { list-style: decimal; margin-bottom: 0.4rem; }
        .article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
        .article-content a:hover { color: var(--primary-light); }

        /* ===== Article Tags & Share ===== */
        .article-footer-bar {
            margin-top: 40px;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }
        .article-tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
        .article-tags span { color: var(--text-muted); font-size: 0.85rem; }
        .article-tags .tag {
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(212,168,83,0.08);
            border: 1px solid rgba(212,168,83,0.12);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: rgba(212,168,83,0.15); border-color: rgba(212,168,83,0.25); }
        .article-share { display: flex; align-items: center; gap: 8px; }
        .article-share span { color: var(--text-muted); font-size: 0.85rem; }
        .article-share a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.05);
            color: var(--text-secondary);
            font-size: 1rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .article-share a:hover { background: var(--primary); color: var(--secondary); border-color: var(--primary); transform: translateY(-2px); }

        /* ===== Related Articles ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-dark);
        }
        .related-section .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .related-section .section-header h2 { margin-bottom: 8px; }
        .related-section .section-header p { color: var(--text-muted); font-size: 1rem; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-6px); border-color: var(--border-light); box-shadow: var(--shadow-lg); }
        .related-card .card-img {
            height: 180px;
            background: var(--secondary-light);
            overflow: hidden;
        }
        .related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .related-card:hover .card-img img { transform: scale(1.05); }
        .related-card .card-body { padding: 20px; }
        .related-card .card-body h3 { font-size: 1rem; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-body h3 a { color: var(--text-light); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body .card-meta { color: var(--text-muted); font-size: 0.8rem; display: flex; align-items: center; gap: 12px; }
        .related-card .card-body .card-meta i { font-size: 0.7rem; color: var(--primary); }
        .related-empty { text-align: center; padding: 40px 20px; color: var(--text-muted); grid-column: 1 / -1; }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 60px 0;
            background: var(--bg-body);
        }
        .faq-section .section-header { text-align: center; margin-bottom: 40px; }
        .faq-section .section-header h2 { margin-bottom: 8px; }
        .faq-section .section-header p { color: var(--text-muted); font-size: 1rem; }
        .faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 0;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-light); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            color: var(--text-light);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
            gap: 16px;
        }
        .faq-question i { color: var(--primary); font-size: 0.85rem; transition: var(--transition); flex-shrink: 0; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-question:hover { background: rgba(255,255,255,0.02); }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--secondary-light) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(212,168,83,0.06) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
            padding: 0 24px;
        }
        .cta-inner h2 { margin-bottom: 16px; }
        .cta-inner p { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 32px; }
        .cta-group { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 40px;
            background: var(--primary-gradient);
            color: var(--secondary);
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(212,168,83,0.25);
        }
        .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(212,168,83,0.35); color: var(--secondary); }
        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 40px;
            background: transparent;
            color: var(--text-light);
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .btn-cta-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-3px); }

        /* ===== Error State ===== */
        .error-section {
            min-height: 60vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 100px 24px;
            text-align: center;
        }
        .error-section .error-icon { font-size: 4rem; color: var(--primary); margin-bottom: 24px; opacity: 0.6; }
        .error-section h1 { margin-bottom: 16px; }
        .error-section p { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 32px; max-width: 500px; margin-left: auto; margin-right: auto; }
        .error-section .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 40px;
            background: var(--primary-gradient);
            color: var(--secondary);
            font-weight: 600;
            transition: var(--transition);
        }
        .error-section .btn-back:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(212,168,83,0.3); color: var(--secondary); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .site-footer .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .nav-logo { margin-bottom: 16px; font-size: 1.2rem; }
        .footer-brand p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer-col h4 { color: var(--text-light); font-size: 0.95rem; font-weight: 600; margin-bottom: 16px; }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }
        .footer-social { display: flex; gap: 10px; }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
            padding: 0;
        }
        .footer-social a:hover { background: var(--primary); color: var(--secondary); border-color: var(--primary); transform: translateY(-2px); }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--primary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }
        @media (max-width: 768px) {
            :root { --spacing-section: 60px; }
            .nav-links { display: none; }
            .nav-toggle { display: block; }
            .nav-dock { padding: 8px 16px 8px 20px; }
            .nav-links.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: calc(100% + 12px);
                left: 12px;
                right: 12px;
                background: rgba(13,13,26,0.95);
                backdrop-filter: blur(20px);
                border: 1px solid var(--border-color);
                border-radius: var(--radius-md);
                padding: 12px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
            }
            .nav-links.open a { padding: 12px 18px; width: 100%; }
            .article-hero { min-height: 320px; padding: 100px 20px 60px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero .hero-meta { gap: 12px; font-size: 0.8rem; }
            .article-body-inner { padding: 0 16px; }
            .article-footer-bar { flex-direction: column; align-items: flex-start; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-group { flex-direction: column; }
            .btn-cta, .btn-cta-outline { width: 100%; justify-content: center; }
        }
        @media (max-width: 520px) {
            .site-header { padding: 12px 12px; }
            .nav-dock { padding: 6px 12px 6px 16px; border-radius: 40px; }
            .nav-logo { font-size: 0.95rem; }
            .nav-logo i { font-size: 1.1rem; }
            .btn-nav { padding: 6px 16px; font-size: 0.78rem; }
            .btn-nav span { display: none; }
            .article-hero { min-height: 260px; padding: 80px 16px 40px; }
            .article-hero h1 { font-size: 1.3rem; }
            .article-content { font-size: 0.95rem; }
            .faq-question { padding: 16px 18px; font-size: 0.92rem; }
            .faq-answer { padding: 0 18px 16px; font-size: 0.88rem; }
        }

        /* ===== Utilities ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }