/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a4a;
            --primary-light: #2a3f6a;
            --primary-dark: #0f1a30;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-dark: #0d1525;
            --bg-section: #f4f7fc;
            --bg-card: #ffffff;
            --text-main: #1e2a3a;
            --text-light: #5a6a7a;
            --text-white: #f0f4fa;
            --text-muted: #8a9aaa;
            --border-light: #e2e8f0;
            --border-accent: #e8a838;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --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 16px 48px rgba(0,0,0,0.14);
            --transition: 0.25s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
        }
        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: #ffffff;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent-dark); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: 1rem; }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding { padding: 80px 0; }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            text-align: center;
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-light);
            text-align: center;
            max-width: 680px;
            margin: 0 auto 3rem;
        }
        .text-accent { color: var(--accent); }
        .text-center { text-align: center; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232,168,56,0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid var(--text-white);
        }
        .btn-outline:hover {
            background: var(--text-white);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-dark {
            background: var(--primary);
            color: #fff;
        }
        .btn-dark:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26,42,74,0.30);
        }
        .btn-lg { padding: 16px 44px; font-size: 1.15rem; border-radius: var(--radius-md); }
        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(13,21,37,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            height: var(--nav-height);
            transition: background var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }
        .site-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-logo i { color: var(--accent); font-size: 1.5rem; }
        .site-logo:hover { color: var(--accent); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            color: rgba(255,255,255,0.75);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color var(--transition);
            position: relative;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width var(--transition);
        }
        .nav-links a:hover { color: #fff; }
        .nav-links a:hover::after { width: 100%; }
        .nav-links a.active { color: #fff; }
        .nav-links a.active::after { width: 100%; }
        .nav-cta .btn {
            padding: 10px 24px;
            font-size: 0.9rem;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 6px;
        }
        .hamburger span {
            width: 26px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: all var(--transition);
        }
        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-dark);
            padding-top: var(--nav-height);
            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: linear-gradient(135deg, rgba(13,21,37,0.88) 0%, rgba(26,42,74,0.70) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 0 20px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(232,168,56,0.18);
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 1.2rem;
            border: 1px solid rgba(232,168,56,0.25);
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 1.2rem;
            letter-spacing: -0.02em;
        }
        .hero h1 .highlight { color: var(--accent); }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.8);
            max-width: 640px;
            margin: 0 auto 2.2rem;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.10);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            margin-top: 4px;
        }
        /* ===== 核心优势 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .feature-card .icon {
            font-size: 2.6rem;
            color: var(--accent);
            margin-bottom: 1rem;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.6rem;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        /* ===== 平台功能 ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .service-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .service-card .img-wrap {
            width: 100%;
            height: 200px;
            overflow: hidden;
        }
        .service-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .service-card:hover .img-wrap img { transform: scale(1.05); }
        .service-card .body {
            padding: 24px 22px 26px;
        }
        .service-card .body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        .service-card .body p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0.8rem;
        }
        .service-card .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            background: rgba(232,168,56,0.12);
            color: var(--accent-dark);
            font-size: 0.8rem;
            font-weight: 600;
        }
        /* ===== 最新资讯 (CMS) ===== */
        .cms-section {
            background: var(--bg-section);
        }
        .cms-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .cms-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .cms-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .cms-card .img-wrap {
            width: 100%;
            height: 180px;
            overflow: hidden;
        }
        .cms-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .cms-card:hover .img-wrap img { transform: scale(1.05); }
        .cms-card .body {
            padding: 20px 20px 24px;
        }
        .cms-card .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .cms-card .meta .cat {
            background: rgba(232,168,56,0.12);
            color: var(--accent-dark);
            padding: 2px 10px;
            border-radius: 50px;
            font-weight: 600;
        }
        .cms-card .body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.4rem;
            line-height: 1.4;
        }
        .cms-card .body h3 a { color: inherit; }
        .cms-card .body h3 a:hover { color: var(--accent-dark); }
        .cms-card .body p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        .cms-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-light);
        }
        /* ===== 平台特色 ===== */
        .feature-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            margin-bottom: 60px;
        }
        .feature-row:last-child { margin-bottom: 0; }
        .feature-row .col-text {
            flex: 1 1 45%;
            min-width: 300px;
        }
        .feature-row .col-img {
            flex: 1 1 45%;
            min-width: 300px;
        }
        .feature-row .col-img img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            width: 100%;
        }
        .feature-row h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.8rem;
        }
        .feature-row p {
            font-size: 1rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 1rem;
        }
        .feature-row ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 10px;
            font-size: 0.95rem;
            color: var(--text-main);
        }
        .feature-row ul li i {
            color: var(--accent);
            margin-top: 4px;
            flex-shrink: 0;
        }
        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
        }
        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.4rem;
        }
        .step-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        /* ===== FAQ ===== */
        .faq-section { background: var(--bg-section); }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-q i { color: var(--accent); transition: transform var(--transition); font-size: 0.85rem; }
        .faq-item.open .faq-q i { transform: rotate(180deg); }
        .faq-a {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-a { display: block; }
        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.10;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 80px 20px;
        }
        .cta-content h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
        }
        .cta-content p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.7);
            max-width: 540px;
            margin: 0 auto 2rem;
        }
        .cta-content .btn { margin: 0 8px; }
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .site-logo { margin-bottom: 0.8rem; font-size: 1.2rem; color: #fff; }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.65);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }
        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero h1 { font-size: 2.6rem; }
            .section-title { font-size: 1.9rem; }
            .feature-row { flex-direction: column; gap: 32px; }
            .feature-row .col-text, .feature-row .col-img { flex: 1 1 100%; min-width: 0; }
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(13,21,37,0.98);
                flex-direction: column;
                padding: 24px 20px;
                gap: 20px;
                border-bottom: 1px solid rgba(255,255,255,0.08);
                display: none;
            }
            .nav-links.open { display: flex; }
            .hamburger { display: flex; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; }
            .hero-stat-item .num { font-size: 1.6rem; }
            .section-padding { padding: 56px 0; }
            .section-title { font-size: 1.6rem; }
            .section-subtitle { font-size: 0.95rem; margin-bottom: 2rem; }
            .features-grid { grid-template-columns: 1fr 1fr; }
            .services-grid { grid-template-columns: 1fr; }
            .cms-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
            .cta-content h2 { font-size: 1.8rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.6rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .features-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .nav-cta .btn { padding: 8px 16px; font-size: 0.8rem; }
        }
        /* ===== 通用辅助 ===== */
        .mt-1 { margin-top: 1rem; }
        .mb-1 { margin-bottom: 1rem; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-dark: #0d1b2a;
            --bg-mid: #1b2838;
            --bg-light: #f8f9fa;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --border-color: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
            --shadow-glow: 0 0 30px rgba(230, 57, 70, 0.25);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
        }

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

        html { scroll-behavior: smooth; font-size: 16px; }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; padding: 0; margin: 0; }

        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }

        @media screen and (max-width: 768px) { .container { padding: 0 16px; } }

        .btn {
            display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px;
            font-size: 0.95rem; font-weight: 600; border-radius: 50px; border: none;
            cursor: pointer; transition: var(--transition); text-decoration: none;
            font-family: var(--font-sans); line-height: 1.4; white-space: nowrap;
        }
        .btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
        .btn-primary {
            background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
        }
        .btn-primary:hover, .btn-primary:focus {
            background: var(--primary-dark); color: #fff; transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.45);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(230, 57, 70, 0.3); }
        .btn-outline {
            background: transparent; color: var(--text-white); border: 2px solid rgba(255,255,255,0.5);
        }
        .btn-outline:hover, .btn-outline:focus {
            background: rgba(255,255,255,0.12); color: #fff; border-color: #fff; transform: translateY(-2px);
        }
        .btn-secondary {
            background: var(--secondary); color: #fff; box-shadow: 0 4px 16px rgba(29, 53, 87, 0.35);
        }
        .btn-secondary:hover, .btn-secondary:focus {
            background: #15263e; color: #fff; transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(29, 53, 87, 0.45);
        }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 36px; font-size: 1.05rem; }

        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 0.75rem;
            font-weight: 600; letter-spacing: 0.3px; background: rgba(230, 57, 70, 0.12);
            color: var(--primary); border: 1px solid rgba(230, 57, 70, 0.2);
        }
        .badge-light { background: rgba(255,255,255,0.15); color: #fff; border-color: rgba(255,255,255,0.2); }

        /* Header & Navigation */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(13, 27, 42, 0.92); 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(13, 27, 42, 0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 72px; padding: 0 24px; max-width: var(--max-width); margin: 0 auto;
        }
        .site-logo {
            display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 800;
            color: var(--text-white); text-decoration: none; letter-spacing: -0.3px;
        }
        .site-logo i { color: var(--primary); font-size: 1.4rem; }
        .site-logo:hover { color: var(--primary-light); }
        .nav-links { display: flex; align-items: center; gap: 8px; }
        .nav-links a {
            padding: 8px 16px; font-size: 0.9rem; font-weight: 500; color: rgba(255,255,255,0.75);
            border-radius: 8px; transition: var(--transition); text-decoration: none;
        }
        .nav-links a:hover, .nav-links a:focus { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-links a.active { color: var(--primary); background: rgba(230,57,70,0.12); font-weight: 600; }
        .nav-links a.active:hover { background: rgba(230,57,70,0.18); }
        .nav-cta { margin-left: 12px; }
        .nav-cta .btn { padding: 10px 24px; font-size: 0.88rem; }
        .nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; padding: 8px; }

        @media screen and (max-width: 768px) {
            .nav-toggle { display: block; }
            .nav-links {
                position: fixed; top: 72px; left: 0; right: 0; background: rgba(13,27,42,0.98);
                flex-direction: column; padding: 20px 24px; gap: 4px;
                transform: translateY(-120%); opacity: 0; pointer-events: none;
                transition: var(--transition); backdrop-filter: blur(20px);
                border-bottom: 1px solid rgba(255,255,255,0.06);
            }
            .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-links a { width: 100%; padding: 12px 16px; font-size: 1rem; }
            .nav-cta { margin-left: 0; margin-top: 8px; width: 100%; }
            .nav-cta .btn { width: 100%; justify-content: center; }
        }

        /* Article Hero */
        .article-hero {
            position: relative; padding: 140px 0 80px; margin-top: 72px;
            background: var(--bg-dark); overflow: hidden; min-height: 380px;
            display: flex; align-items: center;
        }
        .article-hero-bg {
            position: absolute; inset: 0; z-index: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.35; filter: saturate(0.8);
        }
        .article-hero::after {
            content: ''; position: absolute; inset: 0; z-index: 1;
            background: linear-gradient(135deg, rgba(13,27,42,0.88) 0%, rgba(13,27,42,0.70) 50%, rgba(230,57,70,0.15) 100%);
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero-breadcrumb {
            display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: rgba(255,255,255,0.5);
            margin-bottom: 20px; flex-wrap: wrap;
        }
        .article-hero-breadcrumb a { color: rgba(255,255,255,0.6); }
        .article-hero-breadcrumb a:hover { color: var(--primary-light); }
        .article-hero-breadcrumb .sep { color: rgba(255,255,255,0.3); }
        .article-hero-breadcrumb .current { color: rgba(255,255,255,0.85); }
        .article-hero .article-category {
            display: inline-block; padding: 6px 18px; border-radius: 50px;
            background: rgba(230,57,70,0.2); color: var(--primary-light); font-size: 0.8rem;
            font-weight: 600; letter-spacing: 0.5px; margin-bottom: 16px;
            border: 1px solid rgba(230,57,70,0.25);
        }
        .article-hero h1 {
            font-size: 2.6rem; font-weight: 800; color: #fff; line-height: 1.25;
            margin-bottom: 16px; max-width: 800px; letter-spacing: -0.5px;
        }
        .article-hero .article-meta {
            display: flex; align-items: center; gap: 20px; color: rgba(255,255,255,0.6);
            font-size: 0.9rem; flex-wrap: wrap;
        }
        .article-hero .article-meta i { margin-right: 6px; color: var(--primary-light); }
        .article-hero .article-meta span { display: flex; align-items: center; }

        @media screen and (max-width: 768px) {
            .article-hero { padding: 110px 0 50px; min-height: 280px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-hero .article-meta { gap: 12px; font-size: 0.8rem; }
        }
        @media screen and (max-width: 520px) {
            .article-hero h1 { font-size: 1.5rem; }
            .article-hero { padding: 100px 0 40px; }
        }

        /* Article Content */
        .article-main { padding: 60px 0 40px; background: var(--bg-light); }
        .article-body {
            background: #fff; border-radius: var(--radius-md); padding: 48px 56px;
            box-shadow: var(--shadow-sm); border: 1px solid rgba(0,0,0,0.04);
        }
        .article-body p { margin-bottom: 1.4em; color: var(--text-secondary); font-size: 1.02rem; line-height: 1.85; }
        .article-body h2, .article-body h3, .article-body h4 {
            color: var(--text-primary); font-weight: 700; margin-top: 1.8em; margin-bottom: 0.6em;
        }
        .article-body h2 { font-size: 1.6rem; }
        .article-body h3 { font-size: 1.3rem; }
        .article-body ul, .article-body ol { margin-bottom: 1.4em; padding-left: 24px; list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 0.4em; color: var(--text-secondary); }
        .article-body blockquote {
            border-left: 4px solid var(--primary); padding: 16px 24px; margin: 24px 0;
            background: rgba(230,57,70,0.04); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary); font-style: normal;
        }
        .article-body img { border-radius: var(--radius-sm); margin: 24px 0; }
        .article-body a { color: var(--primary); font-weight: 500; text-decoration: underline; text-underline-offset: 2px; }
        .article-body a:hover { color: var(--primary-dark); }
        .article-not-found {
            text-align: center; padding: 80px 20px; color: var(--text-secondary);
        }
        .article-not-found i { font-size: 3rem; color: var(--text-light); margin-bottom: 20px; display: block; }
        .article-not-found h3 { font-size: 1.4rem; margin-bottom: 12px; color: var(--text-primary); }
        .article-not-found p { margin-bottom: 24px; }
        .article-not-found .btn { margin-top: 8px; }

        @media screen and (max-width: 768px) {
            .article-body { padding: 28px 20px; }
            .article-main { padding: 40px 0 24px; }
            .article-body h2 { font-size: 1.3rem; }
            .article-body p { font-size: 0.95rem; }
        }

        /* Article Nav (prev/next) */
        .article-nav-section { padding: 20px 0 50px; background: var(--bg-light); }
        .article-nav-inner {
            display: flex; justify-content: space-between; align-items: center;
            gap: 20px; flex-wrap: wrap;
        }
        .article-nav-inner a {
            display: inline-flex; align-items: center; gap: 8px; color: var(--text-secondary);
            font-size: 0.9rem; font-weight: 500; padding: 10px 20px;
            background: #fff; border-radius: 50px; box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0,0,0,0.04); transition: var(--transition);
        }
        .article-nav-inner a:hover { color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-1px); }

        /* Features Section */
        .features-section {
            padding: 80px 0; background: var(--bg-dark); color: var(--text-white);
            position: relative; overflow: hidden;
        }
        .features-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.08; pointer-events: none;
        }
        .features-section .container { position: relative; z-index: 1; }
        .features-section .section-title { text-align: center; font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
        .features-section .section-subtitle { text-align: center; color: rgba(255,255,255,0.6); max-width: 600px; margin: 0 auto 48px; font-size: 1.05rem; }
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

        .feature-card {
            background: rgba(255,255,255,0.05); border-radius: var(--radius-md);
            padding: 36px 28px; border: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition); text-align: center;
            backdrop-filter: blur(10px);
        }
        .feature-card:hover { background: rgba(255,255,255,0.09); transform: translateY(-4px); border-color: rgba(230,57,70,0.2); box-shadow: var(--shadow-glow); }
        .feature-card .icon {
            width: 64px; height: 64px; margin: 0 auto 20px; background: rgba(230,57,70,0.15);
            border-radius: 16px; display: flex; align-items: center; justify-content: center;
            font-size: 1.6rem; color: var(--primary-light);
        }
        .feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; color: #fff; }
        .feature-card p { color: rgba(255,255,255,0.6); font-size: 0.9rem; line-height: 1.6; margin-bottom: 0; }

        @media screen and (max-width: 768px) {
            .features-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .features-section { padding: 50px 0; }
            .features-section .section-title { font-size: 1.5rem; }
        }
        @media screen and (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; }
        }

        /* CTA Section */
        .cta-section {
            padding: 80px 0; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            text-align: center; color: #fff; position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            opacity: 0.08; pointer-events: none;
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; }
        .cta-section p { max-width: 600px; margin: 0 auto 32px; font-size: 1.1rem; opacity: 0.9; }
        .cta-section .btn-cta {
            background: #fff; color: var(--primary); font-weight: 700; padding: 16px 40px;
            border-radius: 50px; font-size: 1.05rem; box-shadow: 0 8px 30px rgba(0,0,0,0.2);
            transition: var(--transition); display: inline-flex; align-items: center; gap: 10px;
        }
        .cta-section .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.3); background: #f8f9fa; }
        .cta-section .btn-cta i { transition: var(--transition); }
        .cta-section .btn-cta:hover i { transform: translateX(4px); }

        @media screen and (max-width: 768px) {
            .cta-section { padding: 50px 0; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section p { font-size: 0.95rem; }
        }

        /* FAQ Section */
        .faq-section {
            padding: 80px 0; background: var(--bg-light);
        }
        .faq-section .section-title { text-align: center; font-size: 2rem; font-weight: 700; color: var(--text-primary); margin-bottom: 12px; }
        .faq-section .section-subtitle { text-align: center; color: var(--text-light); max-width: 600px; margin: 0 auto 48px; font-size: 1.05rem; }
        .faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 4px; }
        .faq-item {
            background: #fff; border-radius: var(--radius-sm); border: 1px solid rgba(0,0,0,0.04);
            overflow: hidden; transition: var(--transition); box-shadow: var(--shadow-sm);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            display: flex; justify-content: space-between; align-items: center;
            padding: 18px 24px; font-size: 1rem; font-weight: 600; color: var(--text-primary);
            cursor: pointer; transition: var(--transition); background: none; border: none;
            width: 100%; text-align: left; font-family: var(--font-sans);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.85rem; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7;
        }
        .faq-answer.open { max-height: 300px; padding: 0 24px 20px; }

        @media screen and (max-width: 768px) {
            .faq-section { padding: 50px 0; }
            .faq-section .section-title { font-size: 1.5rem; }
            .faq-question { padding: 14px 16px; font-size: 0.92rem; }
            .faq-answer { font-size: 0.88rem; }
            .faq-answer.open { padding: 0 16px 16px; }
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 60px 0 0;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .site-logo { font-size: 1.3rem; margin-bottom: 16px; display: inline-flex; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.5); max-width: 360px; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 18px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.5); font-size: 0.9rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--primary-light); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0;
            display: flex; justify-content: space-between; align-items: center;
            font-size: 0.82rem; color: rgba(255,255,255,0.35); flex-wrap: wrap; gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: var(--primary-light); }

        @media screen and (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-brand { grid-column: 1 / -1; }
            .footer-brand p { max-width: 100%; }
            .site-footer { padding: 40px 0 0; }
        }
        @media screen and (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 20px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* Section spacing utility */
        .section-divider { width: 60px; height: 4px; background: var(--primary); border-radius: 4px; margin: 16px auto 0; }

        /* Scroll to top */
        .scroll-top {
            position: fixed; bottom: 30px; right: 30px; width: 48px; height: 48px;
            border-radius: 50%; background: var(--primary); color: #fff; border: none;
            font-size: 1.2rem; cursor: pointer; box-shadow: var(--shadow-md);
            transition: var(--transition); opacity: 0; pointer-events: none; z-index: 999;
            display: flex; align-items: center; justify-content: center;
        }
        .scroll-top.visible { opacity: 1; pointer-events: auto; }
        .scroll-top:hover { background: var(--primary-dark); transform: translateY(-3px); box-shadow: var(--shadow-lg); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e61e2a;
            --primary-dark: #b8151f;
            --primary-light: #ff4d56;
            --secondary: #1a1a2e;
            --secondary-light: #16213e;
            --accent: #f0c040;
            --accent-light: #f5d870;
            --bg-body: #0d0d1a;
            --bg-card: #141428;
            --bg-card-hover: #1c1c3a;
            --bg-dark: #0a0a14;
            --text-primary: #f0f0f5;
            --text-secondary: #b0b0c8;
            --text-muted: #7878a0;
            --border-color: #2a2a4a;
            --border-light: #3a3a5a;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 48px rgba(230, 30, 42, 0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
            border-radius: 4px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }

        h1 {
            font-size: 3rem;
        }
        h2 {
            font-size: 2.25rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.125rem;
        }

        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition), border-color var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.03em;
            white-space: nowrap;
        }
        .site-logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.active {
            color: var(--text-primary);
            background: rgba(230, 30, 42, 0.18);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav-cta {
            margin-left: 12px;
        }
        .nav-cta .btn {
            padding: 10px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            cursor: pointer;
            transition: transform var(--transition), box-shadow var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .nav-cta .btn:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 24px rgba(230, 30, 42, 0.45);
        }
        .nav-cta .btn i {
            font-size: 0.85rem;
            transition: transform var(--transition);
        }
        .nav-cta .btn:hover i {
            transform: translateX(4px);
        }

        /* 移动端导航切换 */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== 按钮通用 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
            text-decoration: none;
            line-height: 1.2;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(230, 30, 42, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(230, 30, 42, 0.5);
            color: #fff;
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(8px);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            color: var(--text-primary);
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--accent), #d4a020);
            color: #1a1a2e;
            box-shadow: 0 4px 20px rgba(240, 192, 64, 0.3);
        }
        .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(240, 192, 64, 0.45);
            color: #1a1a2e;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding: calc(var(--header-height) + 40px) 0 80px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            filter: saturate(1.2) brightness(0.6);
            z-index: 0;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(230, 30, 42, 0.25), transparent 70%),
                radial-gradient(ellipse at 70% 20%, rgba(26, 26, 46, 0.8), transparent 50%);
            z-index: 1;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(230, 30, 42, 0.18);
            border: 1px solid rgba(230, 30, 42, 0.3);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }

        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.1;
            max-width: 780px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 40%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero-meta {
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .hero-meta-item i {
            color: var(--accent);
            font-size: 1.1rem;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-dark);
        }
        .section-card {
            background: var(--bg-card);
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-header h2 {
            margin-bottom: 16px;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--text-secondary);
        }
        .section-header .sub-label {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(230, 30, 42, 0.12);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        /* ===== 卡片网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }
        .card .card-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 18px;
            display: inline-block;
        }
        .card h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .card .card-tag {
            display: inline-block;
            padding: 2px 12px;
            background: rgba(230, 30, 42, 0.12);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-top: 14px;
        }

        .card-image {
            border-radius: var(--radius) var(--radius) 0 0;
            overflow: hidden;
            margin: -32px -28px 20px;
            height: 200px;
            background: var(--border-color);
        }
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
            border-radius: 0;
        }
        .card:hover .card-image img {
            transform: scale(1.05);
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 50%;
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
        }
        .step-item h4 {
            font-size: 1.05rem;
            margin-bottom: 10px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .step-connector {
            display: none;
        }

        /* ===== 图文区块 ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-row.reverse {
            direction: rtl;
        }
        .feature-row.reverse>* {
            direction: ltr;
        }
        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: var(--border-color);
            height: 380px;
        }
        .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .feature-content h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }
        .feature-content p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .feature-content ul {
            margin-top: 20px;
        }
        .feature-content ul li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }
        .feature-content ul li i {
            color: var(--accent);
            font-size: 1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            transition: background var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-answer p {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background: var(--bg-dark);
            overflow: hidden;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.15;
            filter: brightness(0.5);
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.5rem;
            max-width: 640px;
            margin: 0 auto 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            max-width: 540px;
            margin: 0 auto 32px;
            color: var(--text-secondary);
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== 统计数据 ===== */
        .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);
            transition: transform var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* ===== 场景卡片 ===== */
        .scene-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .scene-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }
        .scene-card i {
            font-size: 2rem;
            color: var(--accent);
        }
        .scene-card h4 {
            font-size: 1.05rem;
        }
        .scene-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .scene-card .badge {
            align-self: flex-start;
            padding: 2px 14px;
            background: rgba(230, 30, 42, 0.12);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary-light);
        }

        /* ===== 标签/徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            line-height: 1.4;
        }
        .badge-primary {
            background: rgba(230, 30, 42, 0.15);
            color: var(--primary-light);
        }
        .badge-accent {
            background: rgba(240, 192, 64, 0.15);
            color: var(--accent);
        }
        .badge-success {
            background: rgba(76, 175, 80, 0.15);
            color: #66bb6a;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 28px;
        }
        .footer-brand .site-logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 380px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-primary);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.8rem;
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-row {
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(13, 13, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-color);
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: rgba(230, 30, 42, 0.15);
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .nav-toggle {
                display: block;
            }

            .hero-section {
                min-height: 70vh;
                padding: calc(var(--header-height) + 24px) 0 48px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .hero-meta {
                gap: 20px;
                flex-direction: column;
            }

            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }

            .grid-3,
            .grid-2,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feature-row.reverse {
                direction: ltr;
            }
            .feature-image {
                height: 240px;
            }
            .feature-content h3 {
                font-size: 1.4rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section {
                padding: 60px 0;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px 16px;
            }

            .stat-number {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-sub {
                font-size: 0.9rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .card {
                padding: 24px 20px;
            }
            .card-image {
                margin: -24px -20px 16px;
                height: 160px;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-body);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 12px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--border-light);
        }

        /* ===== 选中文本 ===== */
        ::selection {
            background: rgba(230, 30, 42, 0.4);
            color: #fff;
        }

        /* ===== 加载动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp 0.7s ease forwards;
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }