/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #0f1923;
            --color-primary-light: #1a2a3a;
            --color-primary-dark: #080e14;
            --color-accent: #d4a843;
            --color-accent-light: #e8c46a;
            --color-accent-dark: #b8902e;
            --color-bg: #f7f5f0;
            --color-bg-alt: #ffffff;
            --color-bg-dark: #0f1923;
            --color-bg-card: #ffffff;
            --color-text: #0f1923;
            --color-text-light: #6b7280;
            --color-text-lighter: #9ca3af;
            --color-text-on-dark: #f7f5f0;
            --color-text-on-dark-muted: #b0b8c4;
            --color-border: #e5e0d8;
            --color-border-light: #f0ece6;
            --color-border-dark: #2a3a4a;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-error: #ef4444;
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --shadow-xs: 0 1px 3px rgba(15,25,35,0.04);
            --shadow-sm: 0 2px 10px rgba(15,25,35,0.06);
            --shadow-md: 0 8px 28px rgba(15,25,35,0.08);
            --shadow-lg: 0 20px 52px rgba(15,25,35,0.12);
            --shadow-xl: 0 32px 80px rgba(15,25,35,0.16);
            --space-xs: 6px;
            --space-sm: 14px;
            --space-md: 28px;
            --space-lg: 52px;
            --space-xl: 84px;
            --space-2xl: 130px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--color-accent); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--color-text); }
        h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); letter-spacing: -0.02em; }
        h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); letter-spacing: -0.01em; }
        h3 { font-size: clamp(1.2rem, 2vw, 1.65rem); }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1em; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }
        .section { padding: var(--space-xl) 0; }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: var(--space-xs);
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--color-accent);
            margin-bottom: var(--space-sm);
        }
        .section-label::before {
            content: '';
            width: 28px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .section-title {
            margin-bottom: var(--space-sm);
            color: var(--color-text);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-light);
            max-width: 640px;
            margin-bottom: var(--space-lg);
            font-weight: 400;
            line-height: 1.6;
        }
        .text-center { text-align: center; }
        .text-center .section-subtitle { margin-left: auto; margin-right: auto; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: var(--space-xs);
            padding: 0.75rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            border-color: var(--color-accent-light);
            color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212,168,67,0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-text-on-dark);
            border-color: rgba(255,255,255,0.3);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.1);
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-2px);
        }
        .btn-outline-dark {
            background: transparent;
            color: var(--color-text);
            border-color: var(--color-border);
        }
        .btn-outline-dark:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn-lg { padding: 1rem 2.8rem; font-size: 1.05rem; border-radius: var(--radius-md); }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(15,25,35,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(15,25,35,0.98);
            box-shadow: 0 2px 32px rgba(0,0,0,0.3);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-md);
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--color-text-on-dark);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--color-accent);
            font-size: 1.5rem;
        }
        .logo span { color: var(--color-accent); }
        .logo:hover { color: var(--color-text-on-dark); opacity: 0.95; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: var(--space-md);
        }
        .nav-list a {
            color: var(--color-text-on-dark-muted);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 0.3rem 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .nav-list a:hover { color: var(--color-text-on-dark); }
        .nav-list a:hover::after { width: 100%; }
        .nav-list a.active { color: var(--color-text-on-dark); }
        .nav-list a.active::after { width: 100%; }
        .nav-cta {
            background: var(--color-accent);
            color: var(--color-primary) !important;
            padding: 0.5rem 1.4rem !important;
            border-radius: var(--radius-sm);
            font-weight: 600 !important;
            transition: all var(--transition) !important;
        }
        .nav-cta::after { display: none !important; }
        .nav-cta:hover {
            background: var(--color-accent-light) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(212,168,67,0.25);
            color: var(--color-primary) !important;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--color-text-on-dark);
            padding: var(--space-xs);
            background: none;
            border: none;
            cursor: pointer;
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: var(--color-bg-dark);
            overflow: hidden;
            padding-top: var(--header-height);
        }
        .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: 0.35;
            z-index: 1;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,25,35,0.88) 0%, rgba(15,25,35,0.4) 60%, rgba(15,25,35,0.7) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            padding: var(--space-xl) 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212,168,67,0.15);
            border: 1px solid rgba(212,168,67,0.25);
            padding: 0.4rem 1.2rem;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--color-accent);
            margin-bottom: var(--space-md);
            letter-spacing: 0.04em;
        }
        .hero-badge i { font-size: 0.7rem; }
        .hero h1 {
            color: var(--color-text-on-dark);
            margin-bottom: var(--space-sm);
            font-weight: 800;
        }
        .hero h1 span {
            color: var(--color-accent);
            position: relative;
        }
        .hero p {
            font-size: clamp(1.05rem, 1.6vw, 1.25rem);
            color: var(--color-text-on-dark-muted);
            max-width: 600px;
            margin-bottom: var(--space-md);
            line-height: 1.7;
            font-weight: 300;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            margin-top: var(--space-md);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-lg);
            margin-top: var(--space-lg);
            padding-top: var(--space-lg);
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .hero-stat-item { text-align: left; }
        .hero-stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-text-on-dark);
            letter-spacing: -0.02em;
        }
        .hero-stat-number i { color: var(--color-accent); font-style: normal; }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--color-text-on-dark-muted);
            font-weight: 400;
        }
        .hero-scroll {
            position: absolute;
            bottom: var(--space-lg);
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            color: var(--color-text-on-dark-muted);
            font-size: 1.4rem;
            animation: bounce-down 2s infinite;
        }
        @keyframes bounce-down {
            0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.4; }
            50% { transform: translateX(-50%) translateY(10px); opacity: 1; }
        }

        /* ===== Intro Section ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-xl);
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img { width: 100%; height: 420px; object-fit: cover; }
        .intro-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,0.1);
            pointer-events: none;
        }
        .intro-content .feature-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
            margin-top: var(--space-md);
        }
        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: var(--space-sm);
        }
        .feature-item i {
            color: var(--color-accent);
            font-size: 1.1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .feature-item h4 { font-size: 1rem; font-weight: 600; margin-bottom: 2px; }
        .feature-item p { font-size: 0.9rem; color: var(--color-text-light); margin: 0; }

        /* ===== Category Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--space-md);
        }
        .category-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--color-border-light);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent);
        }
        .category-card-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .category-card-image img { transform: scale(1.06); }
        .category-card-image .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15,25,35,0.5) 0%, transparent 60%);
        }
        .category-card-body {
            padding: var(--space-md);
        }
        .category-card-body h3 {
            font-size: 1.15rem;
            margin-bottom: var(--space-xs);
        }
        .category-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin: 0 0 var(--space-sm) 0;
        }
        .category-card-body .tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            background: rgba(212,168,67,0.1);
            color: var(--color-accent-dark);
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 500;
        }

        /* ===== News / CMS List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: var(--space-md);
        }
        .news-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .news-card-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .news-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .news-card:hover .news-card-image img { transform: scale(1.05); }
        .news-card-image .badge {
            position: absolute;
            top: var(--space-sm);
            left: var(--space-sm);
            background: var(--color-accent);
            color: var(--color-primary);
            padding: 0.2rem 0.9rem;
            border-radius: 100px;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .news-card-body {
            padding: var(--space-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card-body .meta {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            font-size: 0.8rem;
            color: var(--color-text-lighter);
            margin-bottom: var(--space-xs);
        }
        .news-card-body .meta i { margin-right: 4px; }
        .news-card-body h3 {
            font-size: 1.1rem;
            margin-bottom: var(--space-xs);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-body h3 a { color: var(--color-text); }
        .news-card-body h3 a:hover { color: var(--color-accent); }
        .news-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin: 0 0 var(--space-sm) 0;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-body .read-more {
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-card-body .read-more:hover { gap: 8px; }
        .empty-news {
            grid-column: 1 / -1;
            text-align: center;
            padding: var(--space-xl) var(--space-md);
            color: var(--color-text-light);
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }
        .empty-news i { font-size: 2.4rem; color: var(--color-text-lighter); margin-bottom: var(--space-sm); }

        /* ===== Stats / Data ==== */
        .stats-section {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--space-lg);
            text-align: center;
        }
        .stat-card {
            padding: var(--space-md);
        }
        .stat-card i {
            font-size: 2.2rem;
            color: var(--color-accent);
            margin-bottom: var(--space-sm);
        }
        .stat-card .number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-text-on-dark);
            letter-spacing: -0.02em;
            line-height: 1.1;
        }
        .stat-card .number i { font-size: inherit; font-style: normal; }
        .stat-card .label {
            font-size: 0.9rem;
            color: var(--color-text-on-dark-muted);
            margin-top: var(--space-xs);
        }

        /* ===== Process / Flow ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--space-md);
            counter-reset: step;
        }
        .process-step {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .process-step .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-accent);
            color: var(--color-primary);
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--space-sm) auto;
        }
        .process-step h4 { font-size: 1.05rem; margin-bottom: var(--space-xs); }
        .process-step p { font-size: 0.88rem; color: var(--color-text-light); margin: 0; }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-sm);
            margin-bottom: var(--space-sm);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover { border-color: var(--color-accent); }
        .faq-question {
            padding: var(--space-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            background: none;
            width: 100%;
            text-align: left;
            border: none;
            transition: color var(--transition);
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--color-accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 var(--space-md);
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 var(--space-md) var(--space-md) var(--space-md);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 1;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: var(--space-xl) 0;
        }
        .cta-content h2 {
            color: var(--color-text-on-dark);
            margin-bottom: var(--space-sm);
        }
        .cta-content p {
            color: var(--color-text-on-dark-muted);
            max-width: 560px;
            margin: 0 auto var(--space-md) auto;
            font-size: 1.05rem;
        }
        .cta-content .btn { margin-top: var(--space-sm); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary-dark);
            color: var(--color-text-on-dark-muted);
            padding: var(--space-xl) 0 var(--space-md);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }
        .footer-brand .logo { margin-bottom: var(--space-sm); }
        .footer-brand p {
            font-size: 0.9rem;
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: var(--color-text-on-dark);
            font-size: 0.95rem;
            margin-bottom: var(--space-sm);
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: var(--color-text-on-dark-muted);
            font-size: 0.88rem;
            padding: 0.25rem 0;
            transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--color-accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: var(--space-md);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-sm);
            font-size: 0.85rem;
        }
        .footer-bottom a { color: var(--color-text-on-dark-muted); }
        .footer-bottom a:hover { color: var(--color-accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .intro-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
            .intro-image { order: -1; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; --space-xl: 60px; --space-2xl: 80px; }
            .mobile-toggle { display: block; }
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(15,25,35,0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: var(--space-md);
                gap: var(--space-sm);
                transform: translateY(-100%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
                border-bottom: 1px solid rgba(255,255,255,0.06);
                max-height: 0;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
                max-height: 500px;
            }
            .nav-list a { width: 100%; padding: 0.6rem 0; font-size: 1rem; }
            .nav-list a::after { bottom: 4px; }
            .nav-cta { text-align: center; }
            .hero-stats { gap: var(--space-md); }
            .hero-stat-item { flex: 1 1 40%; }
            .news-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
            .process-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: var(--space-md); }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            :root { --space-md: 18px; --space-lg: 36px; --space-xl: 48px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .hero-stats { flex-direction: column; gap: var(--space-sm); }
            .stats-grid { grid-template-columns: 1fr; }
            .process-grid { grid-template-columns: 1fr; }
            .intro-image img { height: 240px; }
            .news-card-image { height: 180px; }
            .category-card-image { height: 180px; }
            .stat-card .number { font-size: 2rem; }
            .btn-lg { padding: 0.8rem 2rem; font-size: 0.95rem; }
        }

        /* ===== Accessibility ===== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: var(--radius-xs);
        }

        /* ===== Skeleton / Loading ===== */
        .skeleton {
            background: linear-gradient(90deg, var(--color-border-light) 25%, #eae7e0 50%, var(--color-border-light) 75%);
            background-size: 200% 100%;
            animation: shimmer 1.6s infinite;
            border-radius: var(--radius-sm);
        }
        @keyframes shimmer {
            0% { background-position: 200% 0; }
            100% { background-position: -200% 0; }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --primary: #1a2a3a;
        --primary-light: #2c3e50;
        --accent: #c8a45c;
        --accent-hover: #d4b672;
        --accent-light: #f5ecd6;
        --bg-body: #f8f7f4;
        --bg-white: #ffffff;
        --bg-dark: #0f1a24;
        --bg-card: #ffffff;
        --text-primary: #1a2a3a;
        --text-body: #3d4a5a;
        --text-muted: #7a8795;
        --text-light: #bcc5ce;
        --border-color: #e8e5df;
        --radius-sm: 6px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --shadow-sm: 0 2px 8px rgba(26, 42, 58, 0.06);
        --shadow-md: 0 8px 30px rgba(26, 42, 58, 0.08);
        --shadow-lg: 0 20px 60px rgba(26, 42, 58, 0.12);
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        --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);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-body);
        background: var(--bg-body);
        padding-top: var(--nav-height);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: var(--transition);
    }
    a:hover {
        color: var(--accent);
    }
    button,
    input,
    textarea {
        font-family: inherit;
        font-size: inherit;
        border: none;
        outline: none;
    }
    ul,
    ol {
        list-style: none;
    }

    /* ===== 容器 ===== */
    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Header / Nav ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--nav-height);
        background: rgba(255, 255, 255, 0.96);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-color);
        z-index: 1000;
        transition: var(--transition);
    }
    .site-header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 22px;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: -0.3px;
    }
    .logo i {
        color: var(--accent);
        font-size: 26px;
    }
    .logo:hover {
        color: var(--primary);
    }
    .nav-list {
        display: flex;
        align-items: center;
        gap: 32px;
    }
    .nav-list a {
        font-size: 15px;
        font-weight: 500;
        color: var(--text-body);
        padding: 6px 0;
        position: relative;
        transition: var(--transition);
    }
    .nav-list a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--accent);
        transition: var(--transition);
        border-radius: 2px;
    }
    .nav-list a:hover::after,
    .nav-list a.active::after {
        width: 100%;
    }
    .nav-list a.active {
        color: var(--primary);
        font-weight: 600;
    }
    .nav-list a:hover {
        color: var(--primary);
    }
    .nav-list a.nav-cta {
        background: var(--accent);
        color: #fff;
        padding: 8px 20px;
        border-radius: 50px;
        font-weight: 600;
        font-size: 14px;
        display: flex;
        align-items: center;
        gap: 6px;
        transition: var(--transition);
    }
    .nav-list a.nav-cta::after {
        display: none;
    }
    .nav-list a.nav-cta:hover {
        background: var(--accent-hover);
        transform: translateY(-1px);
        box-shadow: 0 4px 16px rgba(200, 164, 92, 0.35);
        color: #fff;
    }
    .nav-toggle {
        display: none;
        background: none;
        font-size: 24px;
        color: var(--primary);
        cursor: pointer;
        padding: 4px;
    }

    /* ===== 文章 Banner ===== */
    .article-banner {
        position: relative;
        height: 420px;
        display: flex;
        align-items: flex-end;
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        margin-bottom: 0;
    }
    .article-banner::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(15, 26, 36, 0.1) 0%, rgba(15, 26, 36, 0.75) 100%);
        z-index: 1;
    }
    .article-banner .container {
        position: relative;
        z-index: 2;
        padding-bottom: 48px;
    }
    .article-banner .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        color: rgba(255, 255, 255, 0.7);
        margin-bottom: 16px;
    }
    .article-banner .breadcrumb a {
        color: rgba(255, 255, 255, 0.8);
    }
    .article-banner .breadcrumb a:hover {
        color: var(--accent);
    }
    .article-banner .breadcrumb i {
        font-size: 12px;
        color: rgba(255, 255, 255, 0.4);
    }
    .article-banner h1 {
        font-size: 38px;
        font-weight: 800;
        color: #fff;
        line-height: 1.25;
        max-width: 800px;
        letter-spacing: -0.5px;
        margin-bottom: 16px;
    }
    .article-banner .meta-line {
        display: flex;
        align-items: center;
        gap: 20px;
        flex-wrap: wrap;
        color: rgba(255, 255, 255, 0.8);
        font-size: 14px;
    }
    .article-banner .meta-line span {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .article-banner .meta-line i {
        color: var(--accent);
    }
    .article-banner .category-tag {
        background: var(--accent);
        color: #fff;
        padding: 4px 14px;
        border-radius: 50px;
        font-size: 13px;
        font-weight: 600;
    }

    /* ===== 文章主体 ===== */
    .article-main {
        padding: 60px 0 80px;
        background: var(--bg-body);
    }
    .article-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 48px;
    }

    /* 正文区 */
    .article-content {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        padding: 48px;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-color);
    }
    .article-content .content-body {
        font-size: 17px;
        line-height: 1.9;
        color: var(--text-body);
    }
    .article-content .content-body p {
        margin-bottom: 20px;
    }
    .article-content .content-body h2 {
        font-size: 26px;
        font-weight: 700;
        color: var(--primary);
        margin: 40px 0 16px;
        letter-spacing: -0.3px;
    }
    .article-content .content-body h3 {
        font-size: 21px;
        font-weight: 600;
        color: var(--primary);
        margin: 32px 0 12px;
    }
    .article-content .content-body ul,
    .article-content .content-body ol {
        margin: 16px 0 20px;
        padding-left: 24px;
    }
    .article-content .content-body li {
        margin-bottom: 8px;
        position: relative;
    }
    .article-content .content-body ul li::before {
        content: '•';
        color: var(--accent);
        font-weight: 700;
        position: absolute;
        left: -18px;
    }
    .article-content .content-body ol {
        list-style: decimal;
    }
    .article-content .content-body blockquote {
        border-left: 4px solid var(--accent);
        padding: 16px 24px;
        margin: 24px 0;
        background: var(--accent-light);
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        font-style: italic;
        color: var(--text-primary);
    }
    .article-content .content-body img {
        border-radius: var(--radius-md);
        margin: 32px 0;
        width: 100%;
        box-shadow: var(--shadow-sm);
    }
    .article-content .content-body a {
        color: var(--accent);
        border-bottom: 1px solid transparent;
    }
    .article-content .content-body a:hover {
        border-bottom-color: var(--accent);
    }
    .article-content .content-body .highlight-box {
        background: var(--accent-light);
        border-radius: var(--radius-md);
        padding: 24px 28px;
        margin: 24px 0;
        border: 1px solid rgba(200, 164, 92, 0.2);
    }
    .article-content .content-body .highlight-box strong {
        color: var(--primary);
    }

    /* 文章底部 */
    .article-footer-meta {
        margin-top: 48px;
        padding-top: 24px;
        border-top: 1px solid var(--border-color);
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 16px;
    }
    .article-footer-meta .tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    .article-footer-meta .tags a {
        background: var(--bg-body);
        padding: 4px 14px;
        border-radius: 50px;
        font-size: 13px;
        color: var(--text-muted);
        border: 1px solid var(--border-color);
    }
    .article-footer-meta .tags a:hover {
        border-color: var(--accent);
        color: var(--accent);
        background: var(--accent-light);
    }
    .article-footer-meta .share {
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .article-footer-meta .share span {
        font-size: 14px;
        color: var(--text-muted);
    }
    .article-footer-meta .share a {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--bg-body);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-muted);
        border: 1px solid var(--border-color);
        transition: var(--transition);
    }
    .article-footer-meta .share a:hover {
        background: var(--accent);
        color: #fff;
        border-color: var(--accent);
        transform: translateY(-2px);
    }

    /* 侧边栏 */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: 32px;
    }
    .sidebar-card {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        padding: 28px;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-color);
    }
    .sidebar-card h3 {
        font-size: 18px;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 16px;
        padding-bottom: 12px;
        border-bottom: 2px solid var(--accent);
        display: inline-block;
    }
    .sidebar-card .news-list {
        display: flex;
        flex-direction: column;
        gap: 14px;
    }
    .sidebar-card .news-list a {
        display: flex;
        gap: 14px;
        align-items: flex-start;
        padding-bottom: 14px;
        border-bottom: 1px solid var(--border-color);
        transition: var(--transition);
    }
    .sidebar-card .news-list a:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }
    .sidebar-card .news-list a:hover {
        transform: translateX(4px);
    }
    .sidebar-card .news-list .thumb {
        width: 72px;
        height: 54px;
        border-radius: var(--radius-sm);
        object-fit: cover;
        flex-shrink: 0;
        background: var(--bg-body);
    }
    .sidebar-card .news-list .info h4 {
        font-size: 14px;
        font-weight: 600;
        color: var(--text-primary);
        line-height: 1.4;
        margin-bottom: 4px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .sidebar-card .news-list .info .date {
        font-size: 12px;
        color: var(--text-muted);
    }
    .sidebar-card .cta-box {
        text-align: center;
    }
    .sidebar-card .cta-box p {
        font-size: 14px;
        color: var(--text-muted);
        margin-bottom: 16px;
    }
    .sidebar-card .cta-box .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--accent);
        color: #fff;
        padding: 10px 28px;
        border-radius: 50px;
        font-weight: 600;
        font-size: 14px;
        transition: var(--transition);
    }
    .sidebar-card .cta-box .btn:hover {
        background: var(--accent-hover);
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(200, 164, 92, 0.3);
        color: #fff;
    }

    /* ===== 相关文章 ===== */
    .related-section {
        padding: 60px 0;
        background: var(--bg-white);
        border-top: 1px solid var(--border-color);
    }
    .related-section .section-header {
        text-align: center;
        margin-bottom: 40px;
    }
    .related-section .section-header h2 {
        font-size: 30px;
        font-weight: 800;
        color: var(--primary);
        letter-spacing: -0.3px;
    }
    .related-section .section-header p {
        color: var(--text-muted);
        margin-top: 8px;
        font-size: 16px;
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .related-card {
        background: var(--bg-body);
        border-radius: var(--radius-md);
        overflow: hidden;
        transition: var(--transition);
        border: 1px solid var(--border-color);
    }
    .related-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-md);
    }
    .related-card .card-img {
        height: 180px;
        background-size: cover;
        background-position: center;
        position: relative;
    }
    .related-card .card-img .cat {
        position: absolute;
        top: 12px;
        left: 12px;
        background: var(--accent);
        color: #fff;
        padding: 2px 12px;
        border-radius: 50px;
        font-size: 12px;
        font-weight: 600;
    }
    .related-card .card-body {
        padding: 20px;
    }
    .related-card .card-body h4 {
        font-size: 16px;
        font-weight: 700;
        color: var(--primary);
        line-height: 1.4;
        margin-bottom: 8px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .card-body p {
        font-size: 14px;
        color: var(--text-muted);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 12px;
    }
    .related-card .card-body .meta {
        font-size: 13px;
        color: var(--text-light);
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .related-card .card-body .meta i {
        color: var(--accent);
    }

    /* ===== 未找到文章 ===== */
    .not-found-wrap {
        padding: 120px 0;
        text-align: center;
        background: var(--bg-body);
    }
    .not-found-wrap .icon {
        font-size: 64px;
        color: var(--text-light);
        margin-bottom: 24px;
    }
    .not-found-wrap h2 {
        font-size: 32px;
        font-weight: 800;
        color: var(--primary);
        margin-bottom: 12px;
    }
    .not-found-wrap p {
        color: var(--text-muted);
        font-size: 17px;
        margin-bottom: 32px;
    }
    .not-found-wrap .btn-home {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--accent);
        color: #fff;
        padding: 12px 32px;
        border-radius: 50px;
        font-weight: 600;
        font-size: 15px;
        transition: var(--transition);
    }
    .not-found-wrap .btn-home:hover {
        background: var(--accent-hover);
        transform: translateY(-2px);
        box-shadow: 0 6px 24px rgba(200, 164, 92, 0.35);
        color: #fff;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark);
        color: rgba(255, 255, 255, 0.7);
        padding: 60px 0 0;
    }
    .site-footer .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr;
        gap: 48px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .site-footer .footer-brand .logo {
        color: #fff;
        margin-bottom: 16px;
        font-size: 22px;
    }
    .site-footer .footer-brand .logo i {
        color: var(--accent);
    }
    .site-footer .footer-brand p {
        font-size: 14px;
        line-height: 1.8;
        max-width: 380px;
        color: rgba(255, 255, 255, 0.55);
    }
    .site-footer .footer-col h4 {
        color: #fff;
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 20px;
        letter-spacing: 0.3px;
    }
    .site-footer .footer-col a {
        display: block;
        color: rgba(255, 255, 255, 0.55);
        font-size: 14px;
        margin-bottom: 12px;
        transition: var(--transition);
    }
    .site-footer .footer-col a:hover {
        color: var(--accent);
        padding-left: 4px;
    }
    .site-footer .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 24px 0;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.4);
        flex-wrap: wrap;
        gap: 12px;
    }
    .site-footer .footer-bottom a {
        color: rgba(255, 255, 255, 0.5);
    }
    .site-footer .footer-bottom a:hover {
        color: var(--accent);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .article-layout {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .article-sidebar {
            order: 2;
        }
        .related-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (max-width: 768px) {
        .nav-toggle {
            display: block;
        }
        .nav-list {
            position: fixed;
            top: var(--nav-height);
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            flex-direction: column;
            padding: 20px 24px;
            gap: 16px;
            border-bottom: 1px solid var(--border-color);
            transform: translateY(-100%);
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }
        .nav-list.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .nav-list a.nav-cta {
            align-self: flex-start;
        }

        .article-banner {
            height: 320px;
        }
        .article-banner h1 {
            font-size: 26px;
        }
        .article-content {
            padding: 24px;
        }
        .article-content .content-body {
            font-size: 16px;
        }
        .article-content .content-body h2 {
            font-size: 22px;
        }
        .article-content .content-body h3 {
            font-size: 18px;
        }

        .related-grid {
            grid-template-columns: 1fr;
        }
        .site-footer .footer-grid {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .site-footer .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }
        .article-banner {
            height: 260px;
        }
        .article-banner h1 {
            font-size: 22px;
        }
        .article-banner .meta-line {
            font-size: 13px;
            gap: 12px;
        }
        .article-content {
            padding: 16px;
            border-radius: var(--radius-sm);
        }
        .article-content .content-body {
            font-size: 15px;
        }
        .article-footer-meta {
            flex-direction: column;
            align-items: flex-start;
        }
        .sidebar-card {
            padding: 20px;
        }
        .not-found-wrap h2 {
            font-size: 24px;
        }
    }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a4a;
            --primary-light: #2c4a7a;
            --primary-dark: #0f1a2e;
            --accent: #e8b830;
            --accent-light: #f0d060;
            --accent-dark: #c9a020;
            --bg: #f8f9fc;
            --bg-alt: #eef1f7;
            --bg-dark: #0f1a2e;
            --text: #1a2a4a;
            --text-light: #5a6a8a;
            --text-muted: #8a9abb;
            --text-white: #f0f2f8;
            --border: #d0d8e8;
            --border-light: #e4e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(26, 42, 74, 0.08);
            --shadow-hover: 0 8px 32px rgba(26, 42, 74, 0.15);
            --shadow-lg: 0 12px 48px rgba(26, 42, 74, 0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: '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-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--primary);
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            margin-bottom: 0.5em;
        }
        h3 {
            font-size: clamp(1.2rem, 2vw, 1.6rem);
        }
        p {
            color: var(--text-light);
            margin-bottom: 1em;
        }

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

        /* ===== Header & Navigation (极简高端文字导航) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 24px rgba(26, 42, 74, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.4em;
        }
        .logo span {
            font-weight: 400;
            color: var(--text-light);
            font-size: 0.85em;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            border-radius: 40px;
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.2px;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: rgba(26, 42, 74, 0.04);
        }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(26, 42, 74, 0.06);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-list a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            font-weight: 600;
            border-radius: 40px;
            box-shadow: 0 2px 12px rgba(26, 42, 74, 0.15);
        }
        .nav-list a.nav-cta:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(26, 42, 74, 0.2);
        }
        .nav-list a.nav-cta i {
            font-size: 0.85em;
            transition: transform var(--transition);
        }
        .nav-list a.nav-cta:hover i {
            transform: translateX(4px);
        }
        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            color: var(--primary);
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
            line-height: 1;
        }

        /* ===== Hero / Banner ===== */
        .page-banner {
            padding: calc(var(--nav-height) + 40px) 0 60px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
            position: relative;
            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/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg), transparent);
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .banner-content .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
        }
        .banner-content .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .banner-content .breadcrumb a:hover {
            color: var(--accent);
        }
        .banner-content .breadcrumb i {
            font-size: 0.65rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .banner-content h1 {
            color: #fff;
            font-size: clamp(2rem, 5vw, 3rem);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .banner-content h1 i {
            color: var(--accent);
            margin-right: 8px;
        }
        .banner-content p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .banner-content .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .banner-content .banner-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        /* ===== Section Spacing ===== */
        .section {
            padding: 70px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3 {
            color: #fff;
        }
        .section-dark p {
            color: rgba(255, 255, 255, 0.75);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 i {
            color: var(--accent);
            margin-right: 8px;
        }
        .section-header p {
            max-width: 600px;
            margin: 8px auto 0;
            font-size: 1.05rem;
        }

        /* ===== Cards Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
            gap: 28px;
        }
        .card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 22px 24px 26px;
        }
        .card-body .tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: rgba(232, 184, 48, 0.12);
            padding: 2px 12px;
            border-radius: 40px;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }
        .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .card-body p {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .card-body .card-meta i {
            color: var(--accent);
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
            margin-top: 6px;
            transition: gap var(--transition);
        }
        .card-link i {
            font-size: 0.75rem;
            transition: transform var(--transition);
        }
        .card-link:hover {
            gap: 10px;
        }
        .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Guide Flow / Steps ===== */
        .guide-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            counter-reset: step;
        }
        .guide-step {
            text-align: center;
            padding: 32px 20px 28px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
            transition: all var(--transition);
        }
        .guide-step:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .guide-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(232, 184, 48, 0.3);
        }
        .guide-step h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .guide-step p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 0;
        }

        /* ===== Stats / Data Row ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 24px 16px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .stat-item .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .stat-item .stat-number i {
            color: var(--accent);
            font-size: 1.8rem;
            margin-right: 6px;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 4px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            gap: 16px;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-question i {
            color: var(--accent);
            font-size: 0.85rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            text-align: center;
            padding: 56px 32px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block h2 {
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }
        .cta-block p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 24px;
            font-size: 1.05rem;
            position: relative;
            z-index: 2;
        }
        .cta-block .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            position: relative;
            z-index: 2;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 50px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 4px 20px rgba(232, 184, 48, 0.35);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 28px rgba(232, 184, 48, 0.45);
        }
        .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.9rem;
        }

        /* ===== Tags Cloud ===== */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tags-cloud a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-light);
            background: #fff;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .tags-cloud a:hover {
            color: var(--primary);
            border-color: var(--accent);
            background: rgba(232, 184, 48, 0.06);
            transform: translateY(-1px);
        }
        .tags-cloud a i {
            color: var(--accent);
            font-size: 0.75rem;
        }

        /* ===== Footer (已生成片段，补全样式) ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
            font-size: 1.2rem;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
            line-height: 1.7;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 14px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--accent);
        }
        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            gap: 12px;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 12px 32px rgba(26, 42, 74, 0.08);
                gap: 4px;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                padding: 10px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.active {
                background: rgba(26, 42, 74, 0.06);
            }
            .nav-list a.nav-cta {
                margin-top: 8px;
                justify-content: center;
            }
            .page-banner {
                min-height: 260px;
                padding: calc(var(--nav-height) + 24px) 0 40px;
            }
            .section {
                padding: 48px 0;
            }
            .card-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .guide-flow {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-brand p {
                max-width: 100%;
            }
            .banner-content .banner-tags span {
                font-size: 0.8rem;
                padding: 4px 12px;
            }
            .cta-block {
                padding: 36px 20px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item {
                padding: 16px 12px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .guide-flow {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
            .header-inner {
                padding: 0 16px;
            }
            .container {
                padding: 0 16px;
            }
            .banner-content h1 {
                font-size: 1.6rem;
            }
            .banner-content p {
                font-size: 0.95rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.9rem;
            }
            .cta-block h2 {
                font-size: 1.4rem;
            }
            .btn {
                padding: 10px 24px;
                font-size: 0.9rem;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

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

        /* ===== Skeleton / Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }
        .justify-center {
            justify-content: center;
        }