/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1b2d;
            --primary-light: #1a2d4a;
            --primary-dark: #0a1220;
            --accent: #c9a84c;
            --accent-light: #dfc06a;
            --accent-dark: #a88a2e;
            --accent-glow: rgba(201, 168, 76, 0.25);
            --red: #e74c3c;
            --red-light: #f05a4a;
            --bg: #f8f6f2;
            --bg-alt: #f0ede8;
            --bg-dark: #0f1b2d;
            --card-bg: #ffffff;
            --card-border: #e8e3dc;
            --text: #1a1a2e;
            --text-light: #6b6b80;
            --text-inverse: #f8f6f2;
            --text-muted: #9a9aae;
            --border: #e0dbd4;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(15, 27, 45, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 27, 45, 0.14);
            --shadow-accent: 0 8px 32px rgba(201, 168, 76, 0.30);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-h: 76px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        a { color: var(--accent-dark); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, select, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--primary); }
        h1 { font-size: clamp(2.2rem, 5.5vw, 3.8rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 0.5rem; }
        h3 { font-size: clamp(1.2rem, 2.2vw, 1.6rem); }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Utility ===== */
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p {
            max-width: 600px;
            margin: 0.75rem auto 0;
            font-size: 1.05rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            color: var(--primary);
            box-shadow: var(--shadow-accent);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-inverse);
            border: 2px solid var(--accent);
        }
        .btn-outline:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-dark {
            background: var(--primary);
            color: var(--text-inverse);
        }
        .btn-dark:hover {
            background: var(--primary-light);
            color: var(--text-inverse);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--accent);
            color: var(--primary);
        }
        .badge-outline {
            background: transparent;
            border: 1.5px solid var(--accent);
            color: var(--accent);
        }
        .badge-light {
            background: rgba(201, 168, 76, 0.12);
            color: var(--accent-dark);
        }
        .tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 6px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--bg-alt);
            color: var(--text-light);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--accent);
            color: var(--primary);
        }
        .text-accent { color: var(--accent); }
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .gap-1 { gap: 1rem; }
        .gap-2 { gap: 2rem; }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-h);
            background: rgba(15, 27, 45, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(201, 168, 76, 0.15);
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-inverse);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .logo:hover { color: var(--accent); }
        .logo span { color: var(--accent); }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: 50px;
            color: rgba(248, 246, 242, 0.75);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover,
        .nav-list a.active {
            color: var(--text-inverse);
            background: rgba(201, 168, 76, 0.12);
        }
        .nav-list a.active {
            color: var(--accent);
            font-weight: 600;
        }
        .nav-cta {
            margin-left: 12px;
        }
        .nav-cta .btn {
            padding: 10px 24px;
            font-size: 0.9rem;
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-inverse);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }

        /* ===== Hero ===== */
        .hero {
            padding: 140px 0 100px;
            background: var(--primary) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            position: relative;
            color: var(--text-inverse);
            min-height: 80vh;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 27, 45, 0.88) 0%, rgba(15, 27, 45, 0.60) 70%, rgba(15, 27, 45, 0.30) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 780px;
        }
        .hero-content .badge {
            margin-bottom: 1.2rem;
            font-size: 0.85rem;
            padding: 6px 20px;
        }
        .hero-content h1 {
            color: var(--text-inverse);
            margin-bottom: 1.2rem;
            font-weight: 800;
            line-height: 1.15;
        }
        .hero-content h1 span {
            color: var(--accent);
            display: block;
        }
        .hero-content p {
            font-size: 1.15rem;
            color: rgba(248, 246, 242, 0.8);
            max-width: 600px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero-actions .btn {
            padding: 14px 36px;
            font-size: 1.05rem;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(248, 246, 242, 0.12);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(248, 246, 242, 0.6);
            margin-top: 4px;
        }

        /* ===== Sections ===== */
        section { padding: 80px 0; }
        section.bg-alt { background: var(--bg-alt); }
        section.bg-dark { background: var(--bg-dark); color: var(--text-inverse); }
        section.bg-dark h2,
        section.bg-dark h3,
        section.bg-dark .section-title h2 { color: var(--text-inverse); }
        section.bg-dark .section-title h2::after { background: var(--accent); }
        section.bg-dark p { color: rgba(248, 246, 242, 0.7); }

        /* ===== Intro / About ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-image img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .intro-text h2 { margin-bottom: 1rem; }
        .intro-text p { margin-bottom: 1.2rem; }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 1.5rem;
        }
        .intro-feature {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 500;
            color: var(--text);
        }
        .intro-feature i {
            color: var(--accent);
            font-size: 1.1rem;
            width: 24px;
            text-align: center;
        }

        /* ===== Category Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--card-border);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .category-card .card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .card-img img {
            transform: scale(1.05);
        }
        .category-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 6px;
        }
        .category-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            flex: 1;
            margin-bottom: 14px;
        }
        .category-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }
        .category-card .card-footer .tag {
            font-size: 0.7rem;
        }
        .category-card .card-footer .btn-sm {
            padding: 6px 16px;
            font-size: 0.8rem;
            border-radius: 50px;
            background: var(--accent);
            color: var(--primary);
            font-weight: 600;
            transition: var(--transition);
        }
        .category-card .card-footer .btn-sm:hover {
            background: var(--accent-light);
            transform: translateX(2px);
        }

        /* ===== Latest News (CMS) ===== */
        .news-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .news-item {
            background: var(--card-bg);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--card-border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        .news-item .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .news-item .meta .badge {
            font-size: 0.65rem;
            padding: 2px 10px;
        }
        .news-item h3 {
            font-size: 1.05rem;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-item h3 a {
            color: var(--primary);
        }
        .news-item h3 a:hover {
            color: var(--accent-dark);
        }
        .news-item p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
            flex: 1;
        }
        .news-item .read-more {
            margin-top: 12px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-dark);
            align-self: flex-end;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-item .read-more:hover {
            color: var(--accent);
            gap: 10px;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            color: var(--text-muted);
            font-size: 1rem;
        }

        /* ===== Stats / Data ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(201, 168, 76, 0.15);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }
        .stat-card .icon {
            font-size: 2.4rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .stat-card .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-inverse);
            display: block;
            line-height: 1.2;
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: rgba(248, 246, 242, 0.6);
            margin-top: 6px;
        }

        /* ===== Process ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--card-border);
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary);
            font-weight: 800;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .process-step h4 {
            margin-bottom: 6px;
            font-size: 1.05rem;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--card-border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary i {
            color: var(--accent);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .faq-item[open] summary i {
            transform: rotate(180deg);
        }
        .faq-item summary:hover {
            background: var(--bg-alt);
        }
        .faq-item .faq-body {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            padding: 80px 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 27, 45, 0.82);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: var(--text-inverse);
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: rgba(248, 246, 242, 0.7);
            max-width: 560px;
            margin: 0 auto 2rem;
            font-size: 1.05rem;
        }
        .cta-section .btn {
            padding: 16px 44px;
            font-size: 1.1rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(248, 246, 242, 0.6);
            padding: 48px 0 24px;
            border-top: 1px solid rgba(201, 168, 76, 0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(248, 246, 242, 0.5);
            max-width: 300px;
            line-height: 1.6;
        }
        .footer-col h4 {
            color: var(--text-inverse);
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(248, 246, 242, 0.5);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid rgba(248, 246, 242, 0.06);
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: rgba(248, 246, 242, 0.35);
        }
        .footer-socials {
            display: flex;
            gap: 12px;
        }
        .footer-socials a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(248, 246, 242, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(248, 246, 242, 0.4);
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--accent);
            color: var(--primary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .intro-grid { gap: 40px; }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --header-h: 64px; }
            .menu-toggle { display: block; }
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(15, 27, 45, 0.98);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 1px solid rgba(201, 168, 76, 0.15);
                backdrop-filter: blur(12px);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 18px;
                font-size: 1rem;
            }
            .nav-cta { margin-left: 0; margin-top: 8px; width: 100%; }
            .nav-cta .btn { width: 100%; justify-content: center; }
            .hero { min-height: auto; padding: 120px 0 70px; }
            .hero-content h1 { font-size: clamp(1.8rem, 6vw, 2.6rem); }
            .hero-content p { font-size: 1rem; }
            .hero-stats { flex-wrap: wrap; gap: 20px; }
            .hero-stat-item .num { font-size: 1.6rem; }
            .intro-grid { grid-template-columns: 1fr; }
            .intro-image { order: -1; }
            .intro-features { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .news-list { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
            section { padding: 56px 0; }
            .cta-section { padding: 56px 0; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-card { padding: 20px 12px; }
            .stat-card .num { font-size: 1.6rem; }
            .hero-stats { gap: 16px; }
            .hero-stat-item { flex: 1; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e74c3c;
            --primary-dark: #c0392b;
            --primary-light: #f1948a;
            --primary-gradient: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
            --secondary: #3498db;
            --secondary-dark: #2980b9;
            --accent: #f39c12;
            --accent-dark: #e67e22;
            --bg-dark: #1a1a2e;
            --bg-darker: #0f0f1a;
            --bg-card: #ffffff;
            --bg-section: #f8f9fa;
            --bg-alt: #16213e;
            --text-primary: #2c3e50;
            --text-secondary: #5a6a7a;
            --text-light: #95a5a6;
            --text-white: #ffffff;
            --border-color: #e9ecef;
            --border-light: rgba(255,255,255,0.12);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --shadow-hover: 0 16px 48px rgba(231,76,60,0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container: 1200px;
            --nav-height: 76px;
            --spacer: 80px;
            --spacer-mobile: 48px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-section);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        ::selection { background: var(--primary); color: #fff; }
        :focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }

        /* ===== 容器 ===== */
        .container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 880px; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 28px; border-radius: 50px;
            font-weight: 600; font-size: 15px; letter-spacing: 0.3px;
            transition: var(--transition); cursor: pointer; border: 2px solid transparent;
            justify-content: center; white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary-gradient); color: #fff; border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(231,76,60,0.30);
        }
        .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); box-shadow: 0 8px 28px rgba(231,76,60,0.45); transform: translateY(-2px); color: #fff; }
        .btn-secondary {
            background: transparent; color: var(--text-white); border-color: rgba(255,255,255,0.6);
        }
        .btn-secondary:hover { background: rgba(255,255,255,0.12); border-color: #fff; color: #fff; transform: translateY(-2px); }
        .btn-outline {
            background: transparent; color: var(--primary); border-color: var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .btn-sm { padding: 8px 18px; font-size: 13px; }
        .btn-lg { padding: 16px 36px; font-size: 17px; }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px;
            font-size: 12px; font-weight: 600; letter-spacing: 0.5px;
            background: rgba(231,76,60,0.12); color: var(--primary);
        }
        .badge-white { background: rgba(255,255,255,0.18); color: #fff; }
        .badge-dark { background: rgba(0,0,0,0.06); color: var(--text-secondary); }
        .badge-accent { background: rgba(243,156,18,0.15); color: var(--accent-dark); }
        .tag {
            display: inline-block; padding: 2px 12px; border-radius: 6px;
            font-size: 12px; font-weight: 500; background: var(--bg-section); color: var(--text-secondary);
            border: 1px solid var(--border-color); transition: var(--transition);
        }
        .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--nav-height); background: rgba(15,15,26,0.95);
            backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(15,15,26,0.98); box-shadow: 0 2px 40px rgba(0,0,0,0.3); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-height); }
        .logo {
            display: flex; align-items: center; gap: 10px; font-size: 24px; font-weight: 800;
            color: #fff; letter-spacing: -0.5px;
        }
        .logo i { color: var(--primary); font-size: 28px; }
        .logo span { color: var(--primary); font-weight: 300; }
        .logo:hover { color: #fff; opacity: 0.92; }
        .nav-list { display: flex; align-items: center; gap: 12px; }
        .nav-list a {
            display: block; padding: 8px 18px; border-radius: 50px;
            color: rgba(255,255,255,0.70); font-weight: 500; font-size: 15px;
            transition: var(--transition); position: relative;
        }
        .nav-list a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-list a.active { color: #fff; background: rgba(231,76,60,0.25); }
        .nav-cta { margin-left: 8px; }
        .nav-cta .btn { padding: 10px 24px; font-size: 14px; }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; }
        .nav-toggle span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 4px; transition: var(--transition); }

        /* ===== Hero / Banner 分类页横幅 ===== */
        .category-banner {
            position: relative; margin-top: var(--nav-height);
            min-height: 380px; display: flex; align-items: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate; overflow: hidden;
        }
        .category-banner::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,15,26,0.88) 0%, rgba(26,26,46,0.75) 50%, rgba(231,76,60,0.30) 100%);
            z-index: 0;
        }
        .category-banner .container { position: relative; z-index: 1; text-align: center; padding: 60px 24px; }
        .category-banner h1 { font-size: 48px; font-weight: 800; color: #fff; margin-bottom: 16px; letter-spacing: -0.5px; }
        .category-banner p { font-size: 18px; color: rgba(255,255,255,0.80); max-width: 680px; margin: 0 auto 28px; line-height: 1.6; }
        .category-banner .breadcrumb { display: flex; justify-content: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,0.55); margin-bottom: 20px; }
        .category-banner .breadcrumb a { color: rgba(255,255,255,0.70); }
        .category-banner .breadcrumb a:hover { color: #fff; }
        .category-banner .breadcrumb span { color: rgba(255,255,255,0.90); }

        /* ===== 板块通用 ===== */
        .section { padding: var(--spacer) 0; }
        .section-alt { background: var(--bg-card); }
        .section-dark { background: var(--bg-alt); color: rgba(255,255,255,0.85); }
        .section-dark h2, .section-dark h3 { color: #fff; }
        .section-header { text-align: center; margin-bottom: 48px; }
        .section-header h2 { font-size: 36px; font-weight: 800; letter-spacing: -0.3px; margin-bottom: 12px; }
        .section-header h2 i { color: var(--primary); margin-right: 8px; }
        .section-header p { font-size: 17px; color: var(--text-secondary); max-width: 620px; margin: 0 auto; }
        .section-header .badge { margin-bottom: 12px; }
        .section-dark .section-header p { color: rgba(255,255,255,0.60); }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
        }
        .card {
            background: var(--bg-card); border-radius: var(--radius);
            box-shadow: var(--shadow-sm); overflow: hidden;
            transition: var(--transition); border: 1px solid var(--border-color);
            display: flex; flex-direction: column;
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
        .card-image { position: relative; overflow: hidden; aspect-ratio: 16 / 10; }
        .card-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .card:hover .card-image img { transform: scale(1.05); }
        .card-image .badge { position: absolute; top: 14px; left: 14px; z-index: 2; }
        .card-body { padding: 24px 22px 26px; flex: 1; display: flex; flex-direction: column; }
        .card-body h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
        .card-body h3 a { color: var(--text-primary); }
        .card-body h3 a:hover { color: var(--primary); }
        .card-body p { font-size: 14.5px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 16px; flex: 1; }
        .card-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--text-light); margin-top: auto; padding-top: 14px; border-top: 1px solid var(--border-color); }
        .card-meta i { margin-right: 4px; }
        .card-meta a { color: var(--text-light); font-weight: 500; }
        .card-meta a:hover { color: var(--primary); }

        /* ===== 分类入口双列 ===== */
        .split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
        .split-card {
            display: flex; align-items: center; gap: 20px;
            background: var(--bg-card); border-radius: var(--radius);
            padding: 24px 28px; box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color); transition: var(--transition);
            cursor: default;
        }
        .split-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
        .split-card .icon-wrap {
            width: 56px; height: 56px; border-radius: 14px;
            display: flex; align-items: center; justify-content: center;
            font-size: 26px; color: #fff; flex-shrink: 0;
            background: var(--primary-gradient);
        }
        .split-card .icon-wrap.alt { background: linear-gradient(135deg, #3498db, #2980b9); }
        .split-card .icon-wrap.accent { background: linear-gradient(135deg, #f39c12, #e67e22); }
        .split-card .icon-wrap.green { background: linear-gradient(135deg, #27ae60, #2ecc71); }
        .split-card .icon-wrap.purple { background: linear-gradient(135deg, #9b59b6, #8e44ad); }
        .split-card .content { flex: 1; }
        .split-card .content h3 { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
        .split-card .content p { font-size: 14px; color: var(--text-secondary); margin: 0; }

        /* ===== 流程时间线 ===== */
        .timeline { position: relative; max-width: 800px; margin: 0 auto; padding-left: 40px; }
        .timeline::before { content: ''; position: absolute; left: 16px; top: 0; bottom: 0; width: 3px; background: linear-gradient(to bottom, var(--primary), var(--secondary), var(--accent)); border-radius: 4px; }
        .timeline-item { position: relative; margin-bottom: 36px; padding-left: 32px; }
        .timeline-item:last-child { margin-bottom: 0; }
        .timeline-item .dot {
            position: absolute; left: -32px; top: 4px;
            width: 18px; height: 18px; border-radius: 50%;
            background: var(--primary); border: 4px solid var(--bg-section);
            box-shadow: 0 0 0 3px var(--primary);
        }
        .timeline-item .dot.alt { background: var(--secondary); box-shadow: 0 0 0 3px var(--secondary); }
        .timeline-item .dot.accent { background: var(--accent); box-shadow: 0 0 0 3px var(--accent); }
        .timeline-item .dot.green { background: #27ae60; box-shadow: 0 0 0 3px #27ae60; }
        .timeline-item h4 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
        .timeline-item p { font-size: 14.5px; color: var(--text-secondary); line-height: 1.6; max-width: 600px; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
        .faq-item {
            background: var(--bg-card); border-radius: var(--radius-sm);
            border: 1px solid var(--border-color); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            display: flex; justify-content: space-between; align-items: center;
            padding: 18px 24px; cursor: pointer; font-weight: 600; font-size: 16px;
            color: var(--text-primary); transition: var(--transition);
            user-select: none; background: none; width: 100%; text-align: left;
        }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 14px; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px; color: var(--text-secondary); font-size: 15px; line-height: 1.7;
        }
        .faq-item.active .faq-answer { max-height: 300px; padding: 0 24px 20px; }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: var(--primary-gradient); border-radius: var(--radius-lg);
            padding: 60px 48px; text-align: center; color: #fff;
            position: relative; overflow: hidden; isolation: isolate;
        }
        .cta-block::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10; z-index: 0;
        }
        .cta-block .container { position: relative; z-index: 1; }
        .cta-block h2 { font-size: 34px; font-weight: 800; color: #fff; margin-bottom: 14px; }
        .cta-block p { font-size: 17px; color: rgba(255,255,255,0.85); max-width: 580px; margin: 0 auto 28px; }
        .cta-block .btn-white {
            background: #fff; color: var(--primary); border: 2px solid #fff;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
        }
        .cta-block .btn-white:hover { background: transparent; color: #fff; transform: translateY(-3px); box-shadow: 0 8px 32px rgba(0,0,0,0.25); }

        /* ===== 统计数字 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
        .stat-item h3 { font-size: 36px; font-weight: 800; color: var(--primary); margin-bottom: 4px; }
        .stat-item p { font-size: 15px; color: var(--text-secondary); font-weight: 500; }
        .section-dark .stat-item h3 { color: var(--primary-light); }
        .section-dark .stat-item p { color: rgba(255,255,255,0.60); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-darker); color: rgba(255,255,255,0.70);
            padding: 56px 0 0; border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 36px; }
        .footer-brand .logo { font-size: 22px; margin-bottom: 16px; }
        .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.50); max-width: 360px; }
        .footer-col h4 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: 0.5px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.55); font-size: 14px; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
        .footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 13px; color: rgba(255,255,255,0.35); flex-wrap: wrap; gap: 12px;
        }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            display: flex; align-items: center; justify-content: center;
            width: 36px; height: 36px; border-radius: 50%;
            background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.50);
            transition: var(--transition); font-size: 16px;
        }
        .footer-socials a:hover { background: var(--primary); color: #fff; }

        /* ===== 移动端响应 ===== */
        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            :root { --spacer: var(--spacer-mobile); --nav-height: 64px; }
            .nav-toggle { display: flex; }
            .nav-list {
                position: fixed; top: var(--nav-height); left: 0; right: 0;
                flex-direction: column; background: rgba(15,15,26,0.98);
                backdrop-filter: blur(20px); padding: 20px 24px; gap: 6px;
                transform: translateY(-120%); opacity: 0; pointer-events: none;
                transition: var(--transition); border-bottom: 1px solid rgba(255,255,255,0.06);
                align-items: stretch; max-height: 70vh; overflow-y: auto;
            }
            .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: all; }
            .nav-list a { padding: 12px 18px; border-radius: 10px; }
            .nav-cta { margin-left: 0; margin-top: 8px; }
            .nav-cta .btn { width: 100%; justify-content: center; }
            .category-banner { min-height: 280px; }
            .category-banner h1 { font-size: 30px; }
            .category-banner p { font-size: 16px; }
            .section-header h2 { font-size: 26px; }
            .card-grid { grid-template-columns: 1fr; gap: 20px; }
            .split-grid { grid-template-columns: 1fr; gap: 16px; }
            .split-card { padding: 18px 20px; }
            .timeline { padding-left: 28px; }
            .timeline-item { padding-left: 20px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-block { padding: 40px 24px; }
            .cta-block h2 { font-size: 24px; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .stat-item h3 { font-size: 28px; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .category-banner h1 { font-size: 24px; }
            .category-banner p { font-size: 14px; }
            .section-header h2 { font-size: 22px; }
            .card-body { padding: 18px 16px 20px; }
            .card-body h3 { font-size: 17px; }
            .split-card .icon-wrap { width: 44px; height: 44px; font-size: 20px; border-radius: 10px; }
            .split-card .content h3 { font-size: 15px; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-item h3 { font-size: 24px; }
        }

        /* ===== 实用辅助 ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 12px; }
        .mt-2 { margin-top: 24px; }
        .mt-3 { margin-top: 40px; }
        .mb-1 { margin-bottom: 12px; }
        .mb-2 { margin-bottom: 24px; }
        .gap-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c62835;
            --primary-light: #ff6b77;
            --secondary: #1d3557;
            --secondary-light: #2a4a7a;
            --accent: #f4a261;
            --accent-dark: #e08d4a;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #0d1b2a;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border-color: #e0e0e0;
            --border-light: #f0f0f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.14);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.18);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: 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(--text-primary); }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .logo i { font-size: 26px; color: var(--primary); }
        .logo span { color: var(--secondary); font-weight: 600; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: rgba(230,57,70,0.06);
        }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(230,57,70,0.10);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-cta { margin-left: 12px; }
        .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--text-primary);
            padding: 8px;
            border-radius: var(--radius-sm);
            background: none;
            transition: var(--transition);
        }
        .nav-toggle:hover { background: rgba(0,0,0,0.05); }

        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 4px;
                box-shadow: 0 12px 40px rgba(0,0,0,0.12);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                border-bottom: 1px solid var(--border-color);
                z-index: 999;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }
            .nav-list a.active::after { display: none; }
            .nav-list a.active { background: rgba(230,57,70,0.10); }
            .nav-cta { width: 100%; margin-left: 0; margin-top: 8px; }
            .nav-cta .btn { width: 100%; justify-content: center; }
            .nav-toggle { display: block; }
        }
        @media (max-width: 520px) {
            .logo { font-size: 18px; }
            .logo i { font-size: 22px; }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            border: 2px solid transparent;
            background: none;
            color: inherit;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(230,57,70,0.30);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230,57,70,0.40);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(230,57,70,0.25); }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255,255,255,0.5);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.12);
            border-color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-outline:active { transform: translateY(0); }
        .btn-lg { padding: 14px 36px; font-size: 17px; border-radius: var(--radius-lg); }
        .btn-sm { padding: 6px 16px; font-size: 13px; border-radius: var(--radius-sm); }
        .btn:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            margin-top: var(--header-height);
            overflow: hidden;
        }
        .article-banner .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,27,42,0.85) 0%, rgba(230,57,70,0.65) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 24px;
        }
        .article-banner .category-badge {
            display: inline-block;
            padding: 6px 20px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            box-shadow: 0 4px 12px rgba(230,57,70,0.35);
        }
        .article-banner h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--text-white);
            max-width: 800px;
            margin: 0 auto;
            text-shadow: 0 2px 16px rgba(0,0,0,0.25);
            letter-spacing: -0.5px;
        }
        @media (max-width: 768px) {
            .article-banner { min-height: 240px; }
            .article-banner .container { padding: 40px 16px; }
            .article-banner h1 { font-size: 28px; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 22px; }
            .article-banner .category-badge { font-size: 12px; padding: 4px 14px; }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-light);
        }
        .breadcrumb-bar a { color: var(--secondary); font-weight: 500; }
        .breadcrumb-bar a:hover { color: var(--primary); }
        .breadcrumb-bar .sep { color: var(--border-color); font-weight: 300; }
        .breadcrumb-bar .current { color: var(--text-secondary); font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 400px; }
        @media (max-width: 520px) {
            .breadcrumb-bar .current { max-width: 200px; }
        }

        /* ===== 文章正文 ===== */
        .article-content {
            padding: 60px 0 40px;
            background: var(--bg-body);
        }
        .article-content .container {
            max-width: 860px;
            margin: 0 auto;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px 56px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-bottom: 32px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-light);
            font-size: 14px;
        }
        .article-meta span { display: flex; align-items: center; gap: 6px; }
        .article-meta i { color: var(--primary); font-size: 15px; }
        .article-body {
            font-size: 16.5px;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-body p { margin-bottom: 1.2em; }
        .article-body h2, .article-body h3 { margin-top: 1.6em; margin-bottom: 0.6em; }
        .article-body ul, .article-body ol { margin-bottom: 1.2em; padding-left: 1.5em; }
        .article-body li { margin-bottom: 0.4em; }
        .article-body img { border-radius: var(--radius-md); margin: 1.5em 0; box-shadow: var(--shadow-sm); }
        .article-body a { color: var(--primary); font-weight: 500; border-bottom: 1px solid transparent; }
        .article-body a:hover { border-bottom-color: var(--primary); }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 1.5em 0;
            background: rgba(230,57,70,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body code {
            background: #f1f3f5;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            color: var(--primary-dark);
        }
        .article-body pre {
            background: var(--bg-dark);
            color: #e0e0e0;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: 14px;
            line-height: 1.6;
        }

        /* 文章未找到 */
        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-not-found i {
            font-size: 64px;
            color: var(--text-light);
            margin-bottom: 20px;
            display: block;
        }
        .article-not-found h2 {
            font-size: 28px;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-light);
            margin-bottom: 28px;
            font-size: 16px;
        }
        .article-not-found .btn { margin-top: 8px; }

        @media (max-width: 768px) {
            .article-content { padding: 32px 0; }
            .article-content .container { padding: 28px 24px; }
            .article-meta { gap: 16px; font-size: 13px; }
            .article-body { font-size: 15.5px; }
        }
        @media (max-width: 520px) {
            .article-content .container { padding: 20px 16px; border-radius: var(--radius-md); }
            .article-meta { flex-direction: column; gap: 8px; }
            .article-body { font-size: 15px; }
            .article-not-found i { font-size: 48px; }
            .article-not-found h2 { font-size: 22px; }
        }

        /* ===== 标签 ===== */
        .article-tags {
            padding: 0 0 40px;
            background: var(--bg-body);
        }
        .article-tags .container {
            max-width: 860px;
            margin: 0 auto;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 20px 56px 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }
        .tags-label {
            font-size: 14px;
            color: var(--text-light);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .tags-label i { color: var(--primary); }
        .tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(230,57,70,0.08);
            color: var(--primary-dark);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            transition: var(--transition);
            cursor: default;
        }
        .tag:hover { background: rgba(230,57,70,0.16); }
        @media (max-width: 768px) {
            .article-tags .container { padding: 16px 24px; }
        }
        @media (max-width: 520px) {
            .article-tags .container { padding: 14px 16px; }
            .tag { font-size: 12px; padding: 3px 10px; }
        }

        /* ===== 相关推荐 ===== */
        .related-posts {
            padding: 60px 0;
            background: var(--bg-body);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 36px;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 48px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .related-card:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; }
        .related-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #e9ecef;
        }
        .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .related-card:hover .related-img img { transform: scale(1.06); }
        .related-info {
            padding: 18px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .related-cat {
            display: inline-block;
            padding: 2px 12px;
            background: rgba(230,57,70,0.08);
            color: var(--primary);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            align-self: flex-start;
        }
        .related-info h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }
        .related-card:hover .related-info h3 { color: var(--primary); }
        .related-date {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 4px;
            margin-top: auto;
        }
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; gap: 16px; }
            .section-title { font-size: 22px; }
            .related-posts { padding: 36px 0; }
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255,255,255,0.85);
            max-width: 600px;
            margin: 0 auto 36px;
        }
        .cta-buttons { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
        @media (max-width: 768px) {
            .cta-section { padding: 60px 0; }
            .cta-section h2 { font-size: 28px; }
            .cta-section p { font-size: 16px; }
        }
        @media (max-width: 520px) {
            .cta-section h2 { font-size: 24px; }
            .cta-buttons .btn { width: 100%; justify-content: center; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo { font-size: 24px; margin-bottom: 16px; display: inline-flex; }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 320px; }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul a:hover { color: var(--accent); transform: translateX(4px); }
        .footer-col ul a i { width: 16px; font-size: 14px; color: var(--accent); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255,255,255,0.45);
        }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.6);
            font-size: 18px;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .site-footer { padding: 40px 0 0; }
        }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 24px; }
            .cta-section h2 { font-size: 22px; }
        }
        /* ===== 焦点可访问性 ===== */
        a:focus-visible, button:focus-visible, .btn:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        /* ===== 平滑过渡 ===== */
        .fade-in { animation: fadeIn 0.6s ease both; }
        @keyframes fadeIn { 0% { opacity: 0; transform: translateY(20px); } 100% { opacity: 1; transform: translateY(0); } }