/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #2d2d5e;
            --primary-dark: #0f0f1a;
            --accent: #6c63ff;
            --accent-light: #8b83ff;
            --accent-dark: #4a42d4;
            --gold: #f0c040;
            --gold-light: #f5d868;
            --gold-dark: #d4a830;
            --bg: #f8f9fc;
            --bg-alt: #eef0f7;
            --bg-card: #ffffff;
            --bg-dark: #1a1a2e;
            --text: #1a1a2e;
            --text-light: #6b6b8a;
            --text-lighter: #9a9ab0;
            --text-white: #ffffff;
            --border: #e0e3ed;
            --border-light: #f0f2f8;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow: 0 4px 20px rgba(26, 26, 46, 0.08);
            --shadow-md: 0 8px 30px rgba(26, 26, 46, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 26, 46, 0.14);
            --shadow-glow: 0 0 30px rgba(108, 99, 255, 0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --nav-height: 72px;
            --container: 1200px;
            --gap: 24px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            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(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-dark);
        }

        button,
        input,
        textarea {
            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: 1.3;
            font-weight: 700;
            color: var(--primary);
        }

        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2.2rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 var(--gap);
            width: 100%;
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: var(--text-white);
        }

        .section-title {
            text-align: center;
            margin-bottom: 16px;
            font-size: 2.2rem;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-light);
            font-size: 1.1rem;
            max-width: 680px;
            margin: 0 auto 48px auto;
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            cursor: pointer;
            text-align: center;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }
        .btn-outline:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-gold {
            background: var(--gold);
            color: var(--primary);
            border-color: var(--gold);
        }
        .btn-gold:hover {
            background: var(--gold-dark);
            border-color: var(--gold-dark);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(240, 192, 64, 0.35);
        }
        .btn-gold:active {
            transform: translateY(0);
        }
        .btn-lg {
            padding: 18px 40px;
            font-size: 1.1rem;
            border-radius: var(--radius);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.9rem;
        }
        .btn i {
            font-size: 1.1em;
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--bg-alt);
            color: var(--text-light);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .badge-accent {
            background: rgba(108, 99, 255, 0.10);
            color: var(--accent);
            border-color: rgba(108, 99, 255, 0.20);
        }
        .badge-gold {
            background: rgba(240, 192, 64, 0.15);
            color: var(--gold-dark);
            border-color: rgba(240, 192, 64, 0.25);
        }
        .badge-sm {
            padding: 2px 10px;
            font-size: 0.7rem;
        }

        /* ===== Card ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 32px;
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }
        .card-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin: -32px -32px 20px -32px;
            height: 200px;
            background: var(--bg-alt);
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .card-text {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card-footer {
            margin-top: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
        }
        .card-meta {
            font-size: 0.85rem;
            color: var(--text-lighter);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .card-meta i {
            margin-right: 4px;
        }

        /* ===== Grid ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap);
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
        }

        /* ===== Navigation (Dock) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 20px;
            background: transparent;
            pointer-events: none;
        }
        .nav-dock {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 900px;
            width: 100%;
            background: rgba(26, 26, 46, 0.88);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border-radius: 60px;
            padding: 0 28px;
            height: 58px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.20), 0 0 0 1px rgba(255, 255, 255, 0.06);
            pointer-events: auto;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-logo {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .nav-logo i {
            color: var(--gold);
            font-size: 1.3rem;
        }
        .nav-logo:hover {
            color: var(--gold-light);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            color: rgba(255, 255, 255, 0.75);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.10);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--accent);
            box-shadow: 0 4px 16px rgba(108, 99, 255, 0.35);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-cta .btn {
            padding: 8px 22px;
            font-size: 0.85rem;
            border-radius: 40px;
            background: var(--gold);
            color: var(--primary);
            font-weight: 700;
            border: none;
        }
        .nav-cta .btn:hover {
            background: var(--gold-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(240, 192, 64, 0.30);
        }
        .nav-toggle {
            display: none;
            color: #fff;
            font-size: 1.4rem;
            padding: 6px 10px;
            cursor: pointer;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 30px;
            border: none;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.15);
        }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 20px;
            right: 20px;
            z-index: 999;
            background: rgba(26, 26, 46, 0.96);
            backdrop-filter: blur(24px) saturate(1.4);
            -webkit-backdrop-filter: blur(24px) saturate(1.4);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.30);
            border: 1px solid rgba(255, 255, 255, 0.06);
            flex-direction: column;
            gap: 6px;
            max-height: 70vh;
            overflow-y: auto;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            color: rgba(255, 255, 255, 0.80);
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            transition: all var(--transition);
            display: block;
        }
        .mobile-nav a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .mobile-nav a.active {
            background: var(--accent);
            color: #fff;
        }
        .mobile-nav .mobile-cta {
            margin-top: 12px;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-nav .mobile-cta .btn {
            width: 100%;
            justify-content: center;
            background: var(--gold);
            color: var(--primary);
            font-weight: 700;
            border-radius: 40px;
            padding: 12px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(26, 26, 46, 0.30) 0%, rgba(26, 26, 46, 0.85) 80%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            color: #fff;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            background: rgba(108, 99, 255, 0.20);
            color: var(--accent-light);
            border: 1px solid rgba(108, 99, 255, 0.25);
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
            letter-spacing: 0.3px;
        }
        .hero h1 {
            font-size: 3.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 20px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .hero h1 span {
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 36px auto;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-actions .btn {
            border-radius: 40px;
            padding: 16px 36px;
            font-size: 1.05rem;
        }
        .hero-actions .btn-primary {
            background: var(--accent);
            border-color: var(--accent);
        }
        .hero-actions .btn-primary:hover {
            box-shadow: var(--shadow-glow);
        }
        .hero-actions .btn-outline {
            color: #fff;
            border-color: rgba(255, 255, 255, 0.35);
        }
        .hero-actions .btn-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.60);
            color: #fff;
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--gold);
            display: block;
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 4px;
        }

        /* ===== Features ===== */
        .feature-card {
            text-align: center;
            padding: 40px 28px;
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(108, 99, 255, 0.10);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin: 0 auto 20px auto;
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card .card-title {
            margin-bottom: 12px;
        }
        .feature-card .card-text {
            font-size: 0.95rem;
        }

        /* ===== Category Entry ===== */
        .category-entry {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--gap);
            align-items: center;
        }
        .category-entry-image {
            border-radius: var(--radius);
            overflow: hidden;
            height: 320px;
            background: var(--bg-alt);
        }
        .category-entry-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .category-entry-content h2 {
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .category-entry-content p {
            color: var(--text-light);
            font-size: 1.05rem;
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .category-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 24px;
        }
        .category-tags .badge {
            padding: 6px 18px;
            font-size: 0.85rem;
        }

        /* ===== Content List (CMS) ===== */
        .content-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--gap);
        }
        .content-card {
            display: flex;
            flex-direction: column;
        }
        .content-card .card-img {
            height: 180px;
            margin: 0;
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }
        .content-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-title {
            font-size: 1.1rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-card .card-text {
            font-size: 0.9rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
            flex: 1;
        }
        .content-card .card-footer {
            margin-top: 0;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .content-card .card-meta .badge {
            font-size: 0.7rem;
            padding: 2px 10px;
        }
        .content-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-light);
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .content-empty i {
            font-size: 2.4rem;
            color: var(--text-lighter);
            margin-bottom: 16px;
            display: block;
        }
        .content-empty p {
            font-size: 1rem;
        }

        /* ===== Steps / Process ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 36px 24px;
            position: relative;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-size: 1.5rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            position: relative;
            z-index: 1;
        }
        .step-card h4 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .step-card p {
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .step-connector {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            background: none;
            width: 100%;
            text-align: left;
            gap: 16px;
            border: none;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(108, 99, 255, 0.03);
        }
        .faq-question i {
            color: var(--accent);
            font-size: 1.1rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: #fff;
            font-size: 2.4rem;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.70);
            font-size: 1.1rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-content .btn {
            border-radius: 40px;
            padding: 18px 48px;
            font-size: 1.1rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.70);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .nav-logo {
            font-size: 1.4rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: var(--gold-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.40);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.50);
        }
        .footer-bottom a:hover {
            color: var(--gold-light);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.55);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: all var(--transition);
            padding: 0;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            padding: 0;
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero h1 {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }
            .nav-links {
                display: none;
            }
            .nav-cta .btn {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .nav-dock {
                padding: 0 16px;
                height: 52px;
                max-width: 100%;
            }
            .nav-logo {
                font-size: 1rem;
            }
            .nav-logo i {
                font-size: 1.1rem;
            }

            .hero {
                min-height: 70vh;
                padding: 60px 16px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat-number {
                font-size: 1.6rem;
            }

            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 32px;
            }

            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }

            .category-entry {
                grid-template-columns: 1fr;
            }
            .category-entry-image {
                height: 220px;
                order: -1;
            }
            .category-entry-content h2 {
                font-size: 1.6rem;
            }

            .steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-content h2 {
                font-size: 1.8rem;
            }
            .cta-content .btn {
                padding: 14px 32px;
                font-size: 1rem;
            }

            .content-list {
                grid-template-columns: 1fr;
            }

            .hero-actions .btn {
                padding: 14px 28px;
                font-size: 0.95rem;
                width: 100%;
                max-width: 280px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                max-width: 100%;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .card {
                padding: 24px;
            }
            .card-img {
                margin: -24px -24px 16px -24px;
                height: 160px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px 16px 18px;
            }
            .nav-dock {
                padding: 0 12px;
            }
            .mobile-nav {
                left: 12px;
                right: 12px;
                padding: 16px 18px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mt-48 {
            margin-top: 48px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0b0e1a;
            --primary-light: #141a2e;
            --secondary: #1a2340;
            --gold: #f0c674;
            --gold-light: #f7dfa0;
            --gold-dark: #d4a84b;
            --accent: #4a7cff;
            --accent-light: #6b96ff;
            --bg-body: #080b15;
            --bg-card: #0f1424;
            --bg-card-hover: #161d33;
            --bg-section: #0c1120;
            --text-primary: #eef2f8;
            --text-secondary: #b0b8c9;
            --text-muted: #6b7388;
            --border-color: #1e2740;
            --border-light: #2a3555;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.35);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.45);
            --shadow-lg: 0 12px 48px rgba(0,0,0,0.55);
            --shadow-glow: 0 0 30px rgba(240,198,116,0.08);
            --transition: 0.25s 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; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
        }
        a { color: var(--gold); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--gold-light); }
        a:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        ul, ol { list-style: none; }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Floating Dock Navigation ===== */
        .nav-dock {
            position: fixed;
            top: 18px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(11,14,26,0.88);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border: 1px solid var(--border-color);
            border-radius: 60px;
            padding: 8px 18px 8px 22px;
            width: calc(100% - 40px);
            max-width: 960px;
            box-shadow: var(--shadow-md), inset 0 1px 0 rgba(240,198,116,0.06);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--gold);
            font-weight: 800;
            font-size: 1.2rem;
            letter-spacing: 0.3px;
            transition: opacity var(--transition);
        }
        .nav-logo i { font-size: 1.3rem; color: var(--gold); }
        .nav-logo:hover { opacity: 0.85; color: var(--gold); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover { background: rgba(240,198,116,0.1); color: var(--gold); }
        .nav-links a.active { background: rgba(240,198,116,0.15); color: var(--gold); font-weight: 600; }
        .nav-cta { display: flex; align-items: center; gap: 10px; }
        .nav-cta .btn { white-space: nowrap; }
        .nav-toggle { display: none; color: var(--text-primary); font-size: 1.4rem; padding: 6px 10px; border-radius: 40px; transition: background var(--transition); }
        .nav-toggle:hover { background: rgba(240,198,116,0.1); }

        @media (max-width: 820px) {
            .nav-links { display: none; }
            .nav-cta .btn { display: none; }
            .nav-toggle { display: block; }
            .nav-dock.mobile-open .nav-links {
                display: flex; flex-direction: column; position: absolute; top: calc(100% + 12px);
                left: 0; right: 0; background: rgba(11,14,26,0.96); backdrop-filter: blur(20px);
                border: 1px solid var(--border-color); border-radius: 24px; padding: 14px 10px;
                box-shadow: var(--shadow-lg); gap: 4px;
            }
            .nav-dock.mobile-open .nav-links a { width: 100%; text-align: center; padding: 12px 16px; }
            .nav-dock.mobile-open .nav-cta .btn { display: inline-flex; margin-top: 6px; width: 100%; justify-content: center; }
        }

        /* ===== Article Hero Banner ===== */
        .article-hero {
            position: relative;
            padding: 120px 0 60px;
            margin-top: 0;
            background: var(--bg-section);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a { color: var(--gold); }
        .article-hero .breadcrumb a:hover { color: var(--gold-light); }
        .article-hero .breadcrumb .sep { color: var(--text-muted); }
        .article-hero .meta-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 16px;
        }
        .article-hero .meta-tags .badge {
            background: rgba(240,198,116,0.15);
            color: var(--gold);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid rgba(240,198,116,0.2);
        }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            max-width: 900px;
            background: linear-gradient(135deg, #f7dfa0 0%, #f0c674 60%, #d4a84b 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-hero .post-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .article-hero .post-meta span { display: flex; align-items: center; gap: 6px; }
        .article-hero .post-meta i { color: var(--gold); font-size: 0.85rem; }

        @media (max-width: 768px) {
            .article-hero { padding: 100px 0 40px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero .post-meta { gap: 12px; font-size: 0.8rem; }
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 50px 0 70px;
            background: var(--bg-body);
        }
        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 300px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-body .content-body h2,
        .article-body .content-body h3 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            color: var(--text-primary);
        }
        .article-body .content-body h2 { font-size: 1.6rem; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }
        .article-body .content-body h3 { font-size: 1.25rem; }
        .article-body .content-body p { margin-bottom: 1.2rem; color: var(--text-secondary); }
        .article-body .content-body ul, .article-body .content-body ol { margin-bottom: 1.2rem; padding-left: 1.8rem; color: var(--text-secondary); }
        .article-body .content-body ul { list-style: disc; }
        .article-body .content-body ol { list-style: decimal; }
        .article-body .content-body li { margin-bottom: 0.4rem; }
        .article-body .content-body a { color: var(--gold); text-decoration: underline; text-underline-offset: 3px; }
        .article-body .content-body a:hover { color: var(--gold-light); }
        .article-body .content-body blockquote {
            border-left: 4px solid var(--gold);
            padding: 16px 22px;
            margin: 1.5rem 0;
            background: rgba(240,198,116,0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body .content-body img {
            border-radius: var(--radius-sm);
            margin: 1.5rem auto;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content-body code {
            background: rgba(240,198,116,0.1);
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--gold);
        }
        .article-body .content-body pre {
            background: var(--primary-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        .article-body .content-body pre code { background: none; padding: 0; color: var(--text-secondary); }
        .not-found-msg {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 1.2rem;
        }
        .not-found-msg a { display: inline-block; margin-top: 16px; }

        /* ===== Article Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--gold);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i { font-size: 0.9rem; }
        .sidebar-card .side-list a {
            display: block;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color var(--transition), padding-left var(--transition);
        }
        .sidebar-card .side-list a:last-child { border-bottom: none; }
        .sidebar-card .side-list a:hover { color: var(--gold); padding-left: 6px; }
        .sidebar-card .side-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-card .side-tags a {
            background: rgba(240,198,116,0.08);
            border: 1px solid var(--border-color);
            border-radius: 40px;
            padding: 4px 14px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            transition: background var(--transition), color var(--transition), border-color var(--transition);
        }
        .sidebar-card .side-tags a:hover { background: rgba(240,198,116,0.18); color: var(--gold); border-color: var(--gold-dark); }

        @media (max-width: 992px) {
            .article-layout { grid-template-columns: 1fr; gap: 32px; }
            .article-body { padding: 28px 24px; }
        }
        @media (max-width: 520px) {
            .article-body { padding: 20px 16px; }
            .article-body .content-body { font-size: 0.95rem; }
        }

        /* ===== Article Footer / Nav ===== */
        .article-foot-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-foot-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .article-foot-nav a:hover { color: var(--gold); }
        .article-foot-nav .back-home {
            background: rgba(240,198,116,0.1);
            border: 1px solid var(--border-color);
            padding: 8px 22px;
            border-radius: 40px;
            font-weight: 500;
        }
        .article-foot-nav .back-home:hover { background: rgba(240,198,116,0.2); border-color: var(--gold-dark); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            border-top: 1px solid var(--border-color);
            padding: 52px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .nav-logo { font-size: 1.2rem; margin-bottom: 12px; display: inline-flex; }
        .footer-brand p { font-size: 0.9rem; color: var(--text-muted); max-width: 340px; }
        .footer-col h5 { font-size: 0.95rem; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; }
        .footer-col a { display: block; padding: 5px 0; font-size: 0.88rem; color: var(--text-muted); transition: color var(--transition); }
        .footer-col a:hover { color: var(--gold); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a { font-size: 1.2rem; color: var(--text-muted); padding: 4px; }
        .footer-social a:hover { color: var(--gold); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            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(--gold); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-brand { grid-column: 1 / -1; }
            .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        }

        /* ===== Utility ===== */
        .text-gold { color: var(--gold); }
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--bg-body); }
        ::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 10px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

        /* ===== Selection ===== */
        ::selection { background: rgba(240,198,116,0.3); color: var(--text-primary); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b0e1a;
            --primary-light: #141829;
            --secondary: #1e2745;
            --gold: #f0c96b;
            --gold-light: #f5d88a;
            --gold-dark: #d4a84a;
            --accent: #e8b84b;
            --bg-body: #080b14;
            --bg-card: #11162a;
            --bg-card-hover: #1a1f3a;
            --bg-section: #0d1120;
            --text-primary: #f0f2f8;
            --text-secondary: #b0b8d0;
            --text-muted: #7a82a0;
            --border-color: rgba(240, 201, 107, 0.15);
            --border-light: rgba(240, 201, 107, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35), 0 2px 8px rgba(0, 0, 0, 0.2);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.45), 0 4px 16px rgba(240, 201, 107, 0.06);
            --shadow-glow: 0 0 40px rgba(240, 201, 107, 0.06);
            --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --header-height: 80px;
            --dock-height: 64px;
        }

        /* ===== 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;
        }
        a {
            color: var(--gold);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--gold-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: transparent;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }
        ::selection {
            background: var(--gold);
            color: var(--primary);
        }
        :focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 浮动 Dock 导航 ===== */
        .nav-dock-wrap {
            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;
            background: rgba(11, 14, 26, 0.82);
            backdrop-filter: blur(24px) saturate(1.4);
            -webkit-backdrop-filter: blur(24px) saturate(1.4);
            border: 1px solid var(--border-color);
            border-radius: 60px;
            padding: 8px 24px 8px 20px;
            max-width: 860px;
            width: 100%;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(240, 201, 107, 0.05);
            transition: var(--transition);
            min-height: var(--dock-height);
        }
        .nav-dock:hover {
            border-color: rgba(240, 201, 107, 0.25);
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(240, 201, 107, 0.08);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--text-primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .nav-logo i {
            color: var(--gold);
            font-size: 22px;
        }
        .nav-logo span {
            background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-logo:hover {
            color: var(--gold);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--text-primary);
            background: rgba(240, 201, 107, 0.08);
        }
        .nav-links a.active {
            color: var(--primary);
            background: var(--gold);
            font-weight: 600;
            box-shadow: 0 2px 12px rgba(240, 201, 107, 0.25);
        }
        .nav-links a.active:hover {
            background: var(--gold-light);
            color: var(--primary);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-cta .btn-sm {
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            background: var(--gold);
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta .btn-sm:hover {
            background: var(--gold-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(240, 201, 107, 0.25);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(240, 201, 107, 0.1);
            color: var(--gold);
            font-size: 18px;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .nav-toggle:hover {
            background: rgba(240, 201, 107, 0.2);
        }

        /* ===== 移动端菜单 ===== */
        .mobile-menu {
            display: none;
            position: fixed;
            top: calc(var(--dock-height) + 32px);
            left: 20px;
            right: 20px;
            background: rgba(11, 14, 26, 0.95);
            backdrop-filter: blur(28px);
            -webkit-backdrop-filter: blur(28px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            z-index: 999;
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6);
            opacity: 0;
            transform: translateY(-12px) scale(0.97);
            transition: var(--transition);
            pointer-events: none;
        }
        .mobile-menu.open {
            opacity: 1;
            transform: translateY(0) scale(1);
            pointer-events: auto;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu a:hover {
            background: rgba(240, 201, 107, 0.06);
            color: var(--text-primary);
        }
        .mobile-menu a.active {
            color: var(--gold);
            font-weight: 600;
            background: rgba(240, 201, 107, 0.08);
        }
        .mobile-menu .mobile-cta {
            margin-top: 12px;
            display: block;
            text-align: center;
            padding: 12px;
            background: var(--gold);
            color: var(--primary);
            border-radius: var(--radius-md);
            font-weight: 600;
            border-bottom: none;
        }
        .mobile-menu .mobile-cta:hover {
            background: var(--gold-light);
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-cta .btn-sm {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-dock {
                padding: 6px 16px 6px 14px;
                max-width: 100%;
                border-radius: 40px;
            }
            .nav-logo {
                font-size: 17px;
                gap: 8px;
            }
            .nav-logo i {
                font-size: 18px;
            }
            .mobile-menu {
                display: block;
            }
            .nav-dock-wrap {
                top: 12px;
                padding: 0 12px;
            }
        }
        @media (max-width: 400px) {
            .nav-logo span {
                font-size: 15px;
            }
            .nav-dock {
                padding: 6px 12px 6px 10px;
            }
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: linear-gradient(160deg, var(--primary) 0%, var(--primary-light) 40%, var(--secondary) 100%);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
            mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(240, 201, 107, 0.04) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 30%, rgba(255, 255, 255, 0.02) 0%, transparent 60%);
            z-index: 1;
            pointer-events: none;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 201, 107, 0.12);
            border: 1px solid rgba(240, 201, 107, 0.18);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 500;
            color: var(--gold);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .category-hero h1 {
            font-size: 48px;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #f0f2f8 0%, var(--gold) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .category-hero .hero-search {
            display: flex;
            max-width: 520px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            border-radius: 60px;
            padding: 4px;
            backdrop-filter: blur(8px);
        }
        .category-hero .hero-search input {
            flex: 1;
            padding: 12px 20px;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 15px;
            border-radius: 60px;
        }
        .category-hero .hero-search input::placeholder {
            color: var(--text-muted);
        }
        .category-hero .hero-search button {
            padding: 10px 28px;
            background: var(--gold);
            color: var(--primary);
            border-radius: 60px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .category-hero .hero-search button:hover {
            background: var(--gold-light);
            transform: scale(1.02);
        }
        @media (max-width: 768px) {
            .category-hero {
                min-height: 300px;
                padding: 100px 16px 60px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .category-hero p {
                font-size: 16px;
            }
            .category-hero .hero-search {
                flex-direction: column;
                border-radius: var(--radius-md);
                background: transparent;
                gap: 8px;
                border: none;
            }
            .category-hero .hero-search input {
                background: rgba(255, 255, 255, 0.05);
                border: 1px solid var(--border-color);
                border-radius: 40px;
                padding: 12px 18px;
            }
            .category-hero .hero-search button {
                justify-content: center;
                padding: 12px;
            }
        }
        @media (max-width: 480px) {
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .hero-badge {
                font-size: 12px;
                padding: 4px 14px;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section);
        }
        .section-dark {
            background: var(--primary-light);
        }
        .section-title {
            font-size: 34px;
            font-weight: 800;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-secondary);
            font-size: 17px;
            max-width: 620px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        .section-title .highlight {
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .card-grid.cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid.cols-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        @media (max-width: 1024px) {
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.cols-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr !important;
                gap: 16px;
            }
        }

        /* ===== 卡片组件 ===== */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(240, 201, 107, 0.2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(240, 201, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--gold);
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .card p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            flex: 1;
        }
        .card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 16px;
        }
        .card .card-tags span {
            padding: 4px 12px;
            background: rgba(240, 201, 107, 0.08);
            border-radius: 40px;
            font-size: 12px;
            color: var(--gold);
            font-weight: 500;
        }
        .card .card-link {
            margin-top: 16px;
            font-weight: 600;
            font-size: 14px;
            color: var(--gold);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .card .card-link:hover {
            gap: 10px;
            color: var(--gold-light);
        }

        /* ===== 图文卡片（带封面） ===== */
        .card-cover {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .card-cover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(240, 201, 107, 0.2);
        }
        .card-cover .cover-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            transition: var(--transition);
        }
        .card-cover:hover .cover-img {
            transform: scale(1.03);
        }
        .card-cover .cover-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-cover .cover-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .card-cover .cover-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
        }
        .card-cover .cover-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 14px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .card-cover .cover-meta i {
            color: var(--gold);
            margin-right: 4px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--gold);
            color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--gold-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(240, 201, 107, 0.2);
            color: var(--primary);
        }
        .btn-outline {
            background: transparent;
            color: var(--gold);
            border: 1.5px solid var(--gold);
        }
        .btn-outline:hover {
            background: rgba(240, 201, 107, 0.08);
            transform: translateY(-2px);
            color: var(--gold-light);
            border-color: var(--gold-light);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 38px;
            font-size: 17px;
        }
        .btn-block {
            width: 100%;
            justify-content: center;
        }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(240, 201, 107, 0.1);
            color: var(--gold);
            border: 1px solid rgba(240, 201, 107, 0.12);
            white-space: nowrap;
        }
        .badge-sm {
            padding: 2px 10px;
            font-size: 11px;
        }
        .badge-green {
            background: rgba(52, 211, 153, 0.12);
            color: #34d399;
            border-color: rgba(52, 211, 153, 0.15);
        }
        .badge-blue {
            background: rgba(96, 165, 250, 0.12);
            color: #60a5fa;
            border-color: rgba(96, 165, 250, 0.15);
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: rgba(240, 201, 107, 0.15);
            transform: translateY(-2px);
        }
        .stat-item .stat-number {
            font-size: 42px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
        }
        .stat-item .stat-label {
            color: var(--text-secondary);
            font-size: 15px;
            margin-top: 8px;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }
        }
        @media (max-width: 400px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            border-color: rgba(240, 201, 107, 0.15);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-item .step-num {
            counter-increment: step;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(240, 201, 107, 0.1);
            border: 1.5px solid rgba(240, 201, 107, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            color: var(--gold);
            margin: 0 auto 16px;
        }
        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            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);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(240, 201, 107, 0.12);
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            gap: 12px;
            transition: var(--transition);
            user-select: none;
            background: transparent;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--gold);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--gold);
            font-size: 14px;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question {
            color: var(--gold);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(150deg, var(--primary-light) 0%, var(--secondary) 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.06;
            mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-content p {
            color: var(--text-secondary);
            font-size: 17px;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .cta-content .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 640px) {
            .cta-content h2 {
                font-size: 26px;
            }
            .cta-content .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 内容列表 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 860px;
            margin: 0 auto;
        }
        .content-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 20px;
            transition: var(--transition);
        }
        .content-item:hover {
            background: var(--bg-card-hover);
            border-color: rgba(240, 201, 107, 0.15);
            transform: translateX(4px);
        }
        .content-item .item-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(240, 201, 107, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--gold);
            flex-shrink: 0;
        }
        .content-item .item-body {
            flex: 1;
        }
        .content-item .item-body h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-primary);
        }
        .content-item .item-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
        }
        .content-item .item-action {
            color: var(--gold);
            font-size: 16px;
            flex-shrink: 0;
        }
        @media (max-width: 640px) {
            .content-item {
                padding: 16px 18px;
                flex-wrap: wrap;
                gap: 12px;
            }
            .content-item .item-action {
                margin-left: auto;
            }
        }

        /* ===== 分隔线 ===== */
        .divider {
            height: 1px;
            background: var(--border-color);
            margin: 0;
            border: none;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary);
            border-top: 1px solid var(--border-color);
            padding: 64px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .nav-logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--gold);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(240, 201, 107, 0.06);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--text-muted);
            padding: 0;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: rgba(240, 201, 107, 0.12);
            color: var(--gold);
            border-color: rgba(240, 201, 107, 0.2);
            padding: 0;
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--gold);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 20px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 24px;
            }
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            max-width: 600px;
            margin: 0 auto;
        }
        .tag-cloud a {
            padding: 8px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 40px;
            font-size: 14px;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .tag-cloud a:hover {
            background: rgba(240, 201, 107, 0.08);
            border-color: rgba(240, 201, 107, 0.2);
            color: var(--gold);
            transform: translateY(-2px);
        }

        /* ===== 空状态 ===== */
        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
        }
        .empty-state i {
            font-size: 48px;
            color: var(--gold);
            opacity: 0.3;
            margin-bottom: 16px;
        }
        .empty-state p {
            font-size: 16px;
        }

        /* ===== 骨架 / 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .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-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .card-grid.cols-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .card-grid.cols-2 {
                grid-template-columns: 1fr;
            }
            .content-item .item-body h4 {
                font-size: 15px;
            }
        }