/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1E3A5F;
            --primary-dark: #152C4A;
            --primary-light: #2A4D72;
            --secondary: #C9A96E;
            --secondary-light: #D4BC8A;
            --accent: #D66B45;
            --accent-hover: #C05E3C;
            --bg: #F8F6F0;
            --bg-card: #FFFFFF;
            --bg-footer: #F0EDE8;
            --text-primary: #2C2C2C;
            --text-secondary: #6B6B6B;
            --text-light: #E0E0E0;
            --link: #B2826E;
            --link-hover: #1E3A5F;
            --border: #E0DCD3;
            --shadow: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-hover: 0 4px 16px rgba(0,0,0,0.10);
            --radius: 8px;
            --radius-sm: 6px;
            --radius-xs: 4px;
            --nav-width: 200px;
            --max-content: 1200px;
            --gap: 24px;
            --section-gap: 80px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text-primary);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--link); text-decoration: none; transition: color 0.2s; }
        a:hover { color: var(--link-hover); text-decoration: underline; }
        a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--primary); }
        h1 { font-size: 2rem; font-weight: 700; }
        h2 { font-size: 1.5rem; font-weight: 600; }
        h3 { font-size: 1.125rem; font-weight: 600; color: var(--text-primary); }
        .container { max-width: var(--max-content); margin: 0 auto; padding: 0 24px; }

        /* ===== 布局外壳 ===== */
        .app-wrapper { display: flex; min-height: 100vh; }
        .side-nav {
            width: var(--nav-width);
            flex-shrink: 0;
            background: var(--primary);
            color: #fff;
            display: flex;
            flex-direction: column;
            position: sticky;
            top: 0;
            height: 100vh;
            z-index: 1000;
            transition: transform 0.3s ease;
        }
        .side-nav .logo-area {
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .side-nav .logo-area a {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            text-decoration: none;
        }
        .side-nav .logo-area a:hover { color: var(--secondary); }
        .side-nav .nav-list { flex: 1; padding: 16px 0; overflow-y: auto; }
        .side-nav .nav-list li a {
            display: block;
            padding: 12px 20px;
            color: rgba(255,255,255,0.85);
            font-size: 0.938rem;
            font-weight: 500;
            border-left: 4px solid transparent;
            transition: background 0.2s, color 0.2s, border-color 0.2s;
            text-decoration: none;
        }
        .side-nav .nav-list li a:hover,
        .side-nav .nav-list li a.active {
            background: rgba(201,169,110,0.12);
            color: #fff;
            border-left-color: var(--secondary);
        }
        .side-nav .nav-list li a.active { font-weight: 600; }
        .side-nav .nav-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.875rem;
            color: rgba(255,255,255,0.7);
        }
        .side-nav .nav-footer a { color: var(--secondary); text-decoration: none; }
        .side-nav .nav-footer a:hover { text-decoration: underline; }
        .side-nav .nav-footer .contact-item { margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
        .side-nav .nav-footer .contact-item i { width: 18px; text-align: center; color: var(--secondary); }

        /* 右侧内容区 */
        .main-content {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1001;
            background: #fff;
            border-bottom: 1px solid var(--border);
            height: 56px;
            padding: 0 16px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .mobile-header .logo-mobile {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
        }
        .mobile-header .hamburger {
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-xs);
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(30,58,95,0.92);
            z-index: 2000;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 24px;
            padding: 40px 20px;
        }
        .mobile-menu-overlay.open { display: flex; }
        .mobile-menu-overlay a {
            color: #fff;
            font-size: 1.25rem;
            font-weight: 500;
            text-decoration: none;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.15);
            width: 100%;
            text-align: center;
        }
        .mobile-menu-overlay a:hover { color: var(--secondary); }
        .mobile-menu-overlay .close-btn {
            position: absolute;
            top: 16px;
            right: 20px;
            background: none;
            border: none;
            color: #fff;
            font-size: 2rem;
            cursor: pointer;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(30,58,95,0.70) 0%, rgba(30,58,95,0.85) 100%);
        }
        .hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 600px;
            padding: 60px 24px;
            color: #fff;
        }
        .hero .hero-content h1 {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .hero .hero-content .subtitle {
            font-size: 1.125rem;
            color: var(--text-light);
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .hero .hero-content .cta-group { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero .hero-content .btn-primary {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: filter 0.2s, transform 0.2s;
            text-decoration: none;
        }
        .hero .hero-content .btn-primary:hover {
            filter: brightness(0.9);
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }
        .hero .hero-content .btn-secondary {
            display: inline-block;
            background: transparent;
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            border: 2px solid rgba(255,255,255,0.6);
            cursor: pointer;
            transition: background 0.2s, color 0.2s, transform 0.2s;
            text-decoration: none;
        }
        .hero .hero-content .btn-secondary:hover {
            background: #fff;
            color: var(--primary);
            transform: translateY(-2px);
            text-decoration: none;
        }
        .hero .watermark {
            position: absolute;
            right: 24px;
            bottom: 24px;
            color: rgba(255,255,255,0.08);
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: 4px;
            pointer-events: none;
            user-select: none;
            z-index: 2;
        }

        /* ===== 通用板块 ===== */
        .section { padding: var(--section-gap) 0; }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 1.75rem;
            color: var(--primary);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .section-title p {
            color: var(--text-secondary);
            margin-top: 12px;
            font-size: 1rem;
        }

        /* ===== 步骤卡 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: transform 0.25s, box-shadow 0.25s;
            border: 1px solid var(--border);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-card .step-icon {
            font-size: 2.5rem;
            color: var(--secondary);
            margin-bottom: 16px;
            width: 64px;
            height: 64px;
            line-height: 64px;
            border-radius: 50%;
            background: rgba(201,169,110,0.10);
            display: inline-block;
        }
        .step-card h3 { margin-bottom: 8px; color: var(--primary); }
        .step-card p { font-size: 0.938rem; color: var(--text-secondary); line-height: 1.6; }

        /* ===== 案例 ===== */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap);
        }
        .case-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.25s, box-shadow 0.25s;
            border: 1px solid var(--border);
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .case-card .case-img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            background: rgba(30,58,95,0.10);
            display: block;
        }
        .case-card .case-body { padding: 20px; }
        .case-card .case-body h3 { margin-bottom: 6px; color: var(--primary); }
        .case-card .case-body .case-stat {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .case-card .case-body .case-link {
            color: var(--accent);
            font-weight: 500;
            font-size: 0.938rem;
            text-decoration: none;
        }
        .case-card .case-body .case-link:hover { text-decoration: underline; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 8px; }
        .faq-item { background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 500;
            color: var(--text-primary);
            transition: background 0.2s;
            user-select: none;
            gap: 12px;
        }
        .faq-item .faq-question:hover { background: rgba(0,0,0,0.02); }
        .faq-item .faq-question h3 { font-size: 1rem; font-weight: 500; color: var(--text-primary); margin: 0; }
        .faq-item .faq-question .faq-toggle {
            font-size: 1.25rem;
            color: var(--secondary);
            flex-shrink: 0;
            transition: transform 0.25s;
        }
        .faq-item.open .faq-question .faq-toggle { transform: rotate(45deg); }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 20px;
            background: #FDFCFA;
            border-left: 4px solid var(--secondary);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 16px 20px;
        }
        .faq-item .faq-answer p { font-size: 0.938rem; color: var(--text-secondary); line-height: 1.7; }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 60px 24px;
            text-align: center;
            border-radius: var(--radius);
            margin: 0 24px;
        }
        .cta-block h2 { color: #fff; font-size: 1.75rem; margin-bottom: 12px; }
        .cta-block p { color: rgba(255,255,255,0.8); font-size: 1.05rem; margin-bottom: 28px; }
        .cta-block .cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .cta-block .btn-cta-primary {
            background: var(--accent);
            color: #fff;
            padding: 14px 40px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: filter 0.2s, transform 0.2s;
            text-decoration: none;
            display: inline-block;
        }
        .cta-block .btn-cta-primary:hover { filter: brightness(0.9); transform: translateY(-2px); text-decoration: none; color: #fff; }
        .cta-block .btn-cta-secondary {
            background: transparent;
            color: #fff;
            padding: 14px 40px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            border: 2px solid rgba(255,255,255,0.6);
            cursor: pointer;
            transition: background 0.2s, color 0.2s, transform 0.2s;
            text-decoration: none;
            display: inline-block;
        }
        .cta-block .btn-cta-secondary:hover { background: #fff; color: var(--primary); transform: translateY(-2px); text-decoration: none; }

        /* ===== 最新资讯 ===== */
        .news-list { display: flex; flex-direction: column; gap: 16px; }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 16px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: box-shadow 0.2s;
        }
        .news-card:hover { box-shadow: var(--shadow-hover); }
        .news-card .news-img {
            width: 120px;
            min-height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: rgba(30,58,95,0.08);
        }
        .news-card .news-body { flex: 1; min-width: 0; }
        .news-card .news-body .news-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .news-card .news-body .news-title a { color: var(--text-primary); text-decoration: none; }
        .news-card .news-body .news-title a:hover { color: var(--primary); text-decoration: underline; }
        .news-card .news-body .news-excerpt {
            font-size: 0.875rem;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .news-card .news-body .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8125rem;
            color: var(--text-secondary);
        }
        .news-card .news-body .news-meta .tag {
            display: inline-block;
            background: rgba(201,169,110,0.15);
            color: var(--secondary);
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 500;
        }
        .news-card .news-body .news-meta .news-date { color: var(--text-secondary); }
        .news-card .news-body .news-link {
            font-size: 0.875rem;
            color: var(--accent);
            font-weight: 500;
            text-decoration: none;
            margin-left: auto;
        }
        .news-card .news-body .news-link:hover { text-decoration: underline; }
        .news-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-secondary);
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid var(--border);
            padding: 40px 24px 24px;
            margin-top: auto;
        }
        .site-footer .footer-inner {
            max-width: var(--max-content);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .site-footer .footer-inner .footer-copy {
            font-size: 0.875rem;
            color: var(--text-secondary);
        }
        .site-footer .footer-inner .footer-links {
            display: flex;
            gap: 20px;
            font-size: 0.875rem;
            flex-wrap: wrap;
        }
        .site-footer .footer-inner .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
        }
        .site-footer .footer-inner .footer-links a:hover { color: var(--primary); text-decoration: underline; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .steps-grid { grid-template-columns: repeat(3, 1fr); }
            .cases-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .side-nav { display: none; }
            .mobile-header { display: flex; }
            .app-wrapper { flex-direction: column; }
            .main-content { width: 100%; }
            .container { padding: 0 16px; }
            .section { padding: 40px 0; }
            .section-title { margin-bottom: 32px; }
            .section-title h2 { font-size: 1.25rem; }
            h1 { font-size: 1.5rem; }
            .hero { min-height: 360px; }
            .hero .hero-content { padding: 40px 16px; }
            .hero .hero-content h1 { font-size: 1.5rem; }
            .hero .hero-content .subtitle { font-size: 1rem; }
            .hero .hero-content .cta-group { flex-direction: column; }
            .hero .hero-content .btn-primary,
            .hero .hero-content .btn-secondary { text-align: center; }
            .steps-grid { grid-template-columns: 1fr; gap: 16px; }
            .cases-grid { grid-template-columns: 1fr; gap: 16px; }
            .news-card { flex-direction: column; }
            .news-card .news-img { width: 100%; min-height: 120px; }
            .cta-block { margin: 0 16px; padding: 40px 16px; }
            .cta-block h2 { font-size: 1.25rem; }
            .cta-block .cta-btns { flex-direction: column; align-items: center; }
            .site-footer .footer-inner { flex-direction: column; text-align: center; }
            .site-footer .footer-inner .footer-links { justify-content: center; }
            .hero .watermark { font-size: 1.2rem; right: 12px; bottom: 12px; }
            .faq-item .faq-question { padding: 14px 16px; }
            .faq-item .faq-answer { padding: 0 16px; }
            .faq-item.open .faq-answer { padding: 14px 16px; }
        }

        @media (max-width: 520px) {
            .hero { min-height: 320px; }
            .hero .hero-content h1 { font-size: 1.25rem; }
            .hero .hero-content .subtitle { font-size: 0.938rem; }
            .step-card { padding: 20px 16px; }
            .case-card .case-body { padding: 14px; }
            .news-card { padding: 12px; }
            .news-card .news-img { min-height: 80px; }
            .cta-block { padding: 32px 12px; }
            .cta-block .btn-cta-primary,
            .cta-block .btn-cta-secondary { padding: 12px 28px; font-size: 0.938rem; width: 100%; }
        }

        /* ===== 辅助类 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --primary: #1E3A5F;
        --primary-dark: #152B47;
        --primary-light: #2A4D72;
        --accent: #C9A96E;
        --accent-light: #DCC89A;
        --cta: #D66B45;
        --cta-hover: #C05D3A;
        --bg: #F8F6F0;
        --bg-card: #FFFFFF;
        --bg-footer: #F0EDE8;
        --text-body: #2C2C2C;
        --text-secondary: #6B6B6B;
        --text-light: #9E9E9E;
        --link-color: #B2826E;
        --link-hover: #8F6654;
        --border-color: #E0DCD3;
        --shadow: 0 2px 8px rgba(0,0,0,0.06);
        --shadow-hover: 0 4px 16px rgba(0,0,0,0.10);
        --radius-card: 8px;
        --radius-btn: 6px;
        --radius-input: 4px;
        --nav-width: 200px;
        --content-max: 1200px;
        --spacing-section: 80px;
        --spacing-section-mobile: 40px;
        --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { font-size: 16px; scroll-behavior: smooth; }
    body {
        font-family: var(--font-stack);
        background: var(--bg);
        color: var(--text-body);
        line-height: 1.75;
        display: flex;
        min-height: 100vh;
    }
    a { color: var(--link-color); text-decoration: none; transition: color 0.25s; }
    a:hover { color: var(--link-hover); text-decoration: underline; }
    a:focus-visible { outline: 2px solid var(--cta); outline-offset: 2px; }
    img { max-width: 100%; height: auto; display: block; }
    ul, ol { list-style: none; }
    button { cursor: pointer; font-family: inherit; }
    .container { max-width: var(--content-max); margin: 0 auto; padding: 0 24px; }

    /* ===== 左侧竖向导航 ===== */
    .side-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: var(--nav-width);
        height: 100vh;
        background: var(--primary);
        color: #fff;
        display: flex;
        flex-direction: column;
        z-index: 1000;
        overflow-y: auto;
        transition: transform 0.35s ease;
    }
    .side-nav .logo-area {
        height: 64px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-bottom: 1px solid rgba(255,255,255,0.10);
    }
    .side-nav .logo-area a {
        font-size: 1.15rem;
        font-weight: 700;
        color: #fff;
        letter-spacing: 0.5px;
        text-decoration: none;
    }
    .side-nav .logo-area a:hover { color: var(--accent); }
    .nav-list { flex: 1; padding: 16px 0; }
    .nav-list li { margin: 0; }
    .nav-list a {
        display: block;
        padding: 12px 20px;
        font-size: 0.938rem;
        font-weight: 500;
        color: rgba(255,255,255,0.85);
        text-decoration: none;
        border-left: 3px solid transparent;
        transition: background 0.25s, color 0.25s, border-color 0.25s;
    }
    .nav-list a:hover {
        background: rgba(201,169,110,0.12);
        color: #fff;
        text-decoration: none;
    }
    .nav-list a.active {
        background: rgba(201,169,110,0.10);
        color: #fff;
        border-left-color: var(--accent);
        font-weight: 600;
    }
    .nav-list a:focus-visible { outline: 2px solid var(--cta); outline-offset: -2px; }
    .nav-footer {
        padding: 16px 20px;
        border-top: 1px solid rgba(255,255,255,0.08);
        font-size: 0.813rem;
        color: rgba(255,255,255,0.70);
    }
    .nav-footer .contact-item { margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
    .nav-footer .contact-item i { width: 16px; text-align: center; color: var(--accent); }

    /* ===== 右侧主内容区 ===== */
    .main-wrapper {
        margin-left: var(--nav-width);
        flex: 1;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }
    .main-content { flex: 1; padding: 40px 24px 60px; max-width: var(--content-max); width: 100%; margin: 0 auto; }

    /* ===== 面包屑 ===== */
    .breadcrumb {
        font-size: 0.875rem;
        color: var(--text-secondary);
        margin-bottom: 24px;
        padding: 0 0 12px;
        border-bottom: 1px solid var(--border-color);
        display: flex;
        flex-wrap: wrap;
        gap: 4px;
    }
    .breadcrumb a { color: var(--primary); }
    .breadcrumb a:hover { color: var(--link-hover); }
    .breadcrumb span { color: var(--text-secondary); }
    .breadcrumb .sep { margin: 0 6px; color: var(--text-light); }

    /* ===== 文章头部 ===== */
    .article-header { margin-bottom: 32px; }
    .article-header h1 {
        font-size: 2rem;
        font-weight: 700;
        line-height: 1.3;
        color: var(--primary);
        margin-bottom: 16px;
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        font-size: 0.875rem;
        color: var(--text-secondary);
        align-items: center;
    }
    .article-meta .meta-item { display: flex; align-items: center; gap: 6px; }
    .article-meta .meta-item i { color: var(--accent); width: 14px; text-align: center; }
    .article-meta .tag {
        display: inline-block;
        background: rgba(201,169,110,0.18);
        color: var(--primary);
        padding: 2px 12px;
        border-radius: 20px;
        font-size: 0.75rem;
        font-weight: 500;
    }

    /* ===== 文章正文 ===== */
    .article-body {
        font-size: 1rem;
        line-height: 1.85;
        color: var(--text-body);
        background: var(--bg-card);
        padding: 32px 36px;
        border-radius: var(--radius-card);
        box-shadow: var(--shadow);
        margin-bottom: 40px;
    }
    .article-body p { margin-bottom: 1.25em; text-indent: 0; }
    .article-body h2 { font-size: 1.5rem; font-weight: 600; color: var(--primary); margin: 1.5em 0 0.75em; line-height: 1.4; }
    .article-body h3 { font-size: 1.125rem; font-weight: 600; color: var(--text-body); margin: 1.25em 0 0.5em; line-height: 1.5; }
    .article-body img { margin: 1.5em auto; border-radius: var(--radius-card); box-shadow: var(--shadow); }
    .article-body blockquote {
        background: #FDFCFA;
        border-left: 4px solid var(--accent);
        padding: 16px 20px;
        margin: 1.5em 0;
        color: var(--text-secondary);
        font-style: normal;
        border-radius: 0 var(--radius-card) var(--radius-card) 0;
    }
    .article-body ul, .article-body ol { margin: 1em 0 1em 1.5em; }
    .article-body li { margin-bottom: 0.4em; }
    .article-body a { color: var(--cta); font-weight: 500; }
    .article-body a:hover { color: var(--cta-hover); }

    /* ===== 文章未找到 ===== */
    .article-not-found {
        text-align: center;
        padding: 80px 24px;
        background: var(--bg-card);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow);
    }
    .article-not-found i { font-size: 48px; color: var(--text-light); margin-bottom: 16px; }
    .article-not-found h2 { font-size: 1.5rem; color: var(--primary); margin-bottom: 12px; }
    .article-not-found p { color: var(--text-secondary); margin-bottom: 20px; }
    .btn-back-home {
        display: inline-block;
        background: var(--primary);
        color: #fff;
        padding: 12px 28px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 0.938rem;
        transition: background 0.25s;
        text-decoration: none;
    }
    .btn-back-home:hover { background: var(--primary-dark); color: #fff; text-decoration: none; }

    /* ===== 相关推荐 ===== */
    .related-section { margin-top: 48px; }
    .related-section h2 {
        font-size: 1.5rem;
        font-weight: 600;
        color: var(--primary);
        margin-bottom: 24px;
        padding-bottom: 12px;
        border-bottom: 2px solid var(--accent);
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .related-card {
        background: var(--bg-card);
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: transform 0.25s, box-shadow 0.25s;
    }
    .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .related-card .card-img {
        width: 100%;
        aspect-ratio: 16 / 9;
        background: rgba(30,58,95,0.12);
        display: flex;
        align-items: center;
        justify-content: center;
        overflow: hidden;
    }
    .related-card .card-img img { width: 100%; height: 100%; object-fit: cover; }
    .related-card .card-img .placeholder {
        color: var(--text-light);
        font-size: 0.875rem;
        opacity: 0.6;
    }
    .related-card .card-body { padding: 16px 18px; }
    .related-card .card-body h3 {
        font-size: 1rem;
        font-weight: 600;
        line-height: 1.45;
        color: var(--text-body);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 6px;
    }
    .related-card .card-body h3 a { color: var(--text-body); text-decoration: none; }
    .related-card .card-body h3 a:hover { color: var(--primary); }
    .related-card .card-body .related-date {
        font-size: 0.75rem;
        color: var(--text-light);
    }

    /* ===== 返回入口 ===== */
    .back-entry {
        margin-top: 32px;
        text-align: center;
    }
    .back-entry .btn-back {
        display: inline-block;
        background: transparent;
        border: 2px solid var(--primary);
        color: var(--primary);
        padding: 10px 32px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 0.938rem;
        transition: background 0.25s, color 0.25s;
        text-decoration: none;
    }
    .back-entry .btn-back:hover {
        background: var(--primary);
        color: #fff;
        text-decoration: none;
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--bg-footer);
        border-top: 1px solid var(--border-color);
        margin-left: var(--nav-width);
        padding: 20px 24px;
    }
    .footer-inner {
        max-width: var(--content-max);
        margin: 0 auto;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        font-size: 0.813rem;
        color: var(--text-secondary);
    }
    .footer-inner a { color: var(--text-secondary); text-decoration: none; }
    .footer-inner a:hover { color: var(--primary); text-decoration: underline; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
    .footer-links span { color: var(--text-light); font-size: 0.75rem; }

    /* ===== 移动端导航切换 ===== */
    .mobile-toggle {
        display: none;
        position: fixed;
        top: 12px;
        left: 12px;
        z-index: 1100;
        background: var(--primary);
        color: #fff;
        border: none;
        width: 44px;
        height: 44px;
        border-radius: var(--radius-btn);
        font-size: 1.25rem;
        cursor: pointer;
        box-shadow: 0 2px 8px rgba(0,0,0,0.15);
        transition: background 0.25s;
    }
    .mobile-toggle:hover { background: var(--primary-light); }
    .mobile-overlay {
        display: none;
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(30,58,95,0.85);
        z-index: 1050;
        opacity: 0;
        transition: opacity 0.35s ease;
        pointer-events: none;
    }
    .mobile-overlay.open { opacity: 1; pointer-events: auto; }

    /* ===== 响应式 ===== */
    @media (max-width: 768px) {
        .side-nav {
            transform: translateX(-100%);
            width: 260px;
        }
        .side-nav.open { transform: translateX(0); }
        .mobile-toggle { display: flex; align-items: center; justify-content: center; }
        .mobile-overlay { display: block; }
        .main-wrapper { margin-left: 0; padding-top: 0; }
        .site-footer { margin-left: 0; }
        .main-content { padding: 24px 16px 40px; }
        .article-header h1 { font-size: 1.5rem; }
        .article-body { padding: 20px 18px; }
        .related-grid { grid-template-columns: 1fr; gap: 16px; }
        .footer-inner { flex-direction: column; text-align: center; }
        .footer-links { justify-content: center; }
        .article-meta { gap: 12px; font-size: 0.813rem; }
        .breadcrumb { font-size: 0.813rem; }
    }

    @media (min-width: 769px) and (max-width: 1024px) {
        .related-grid { grid-template-columns: repeat(2, 1fr); }
        .main-content { padding: 32px 20px 50px; }
    }

    @media (max-width: 520px) {
        .article-body { padding: 16px 14px; font-size: 0.938rem; }
        .article-header h1 { font-size: 1.25rem; }
        .related-grid { grid-template-columns: 1fr; }
        .breadcrumb { font-size: 0.75rem; flex-wrap: wrap; }
    }

    /* ===== 辅助 ===== */
    .text-center { text-align: center; }
    .mt-1 { margin-top: 16px; }
    .mb-1 { margin-bottom: 16px; }
    .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1E3A5F;
            --primary-dark: #152d4a;
            --secondary: #C9A96E;
            --secondary-light: rgba(201, 169, 110, 0.15);
            --accent: #D66B45;
            --accent-hover: #c05d3a;
            --bg-body: #F8F6F0;
            --bg-card: #FFFFFF;
            --bg-footer: #F0EDE8;
            --text-body: #2C2C2C;
            --text-secondary: #6B6B6B;
            --text-light: #9A9A9A;
            --link-color: #B2826E;
            --link-hover: #1E3A5F;
            --border-color: #E0DCD3;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.10);
            --radius-card: 8px;
            --radius-btn: 6px;
            --radius-input: 4px;
            --nav-width: 200px;
            --content-max: 1200px;
            --space-section: 80px;
            --space-section-mobile: 40px;
            --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: 0.25s ease;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--link-color);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--link-hover);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.4;
            color: var(--primary);
        }
        h1 {
            font-size: 2rem;
            font-weight: 700;
        }
        h2 {
            font-size: 1.5rem;
            font-weight: 600;
        }
        h3 {
            font-size: 1.125rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-body);
        }
        .text-secondary {
            color: var(--text-secondary);
            font-size: 0.875rem;
        }
        .text-light {
            color: var(--text-light);
            font-size: 0.875rem;
        }

        /* ===== Layout Wrapper ===== */
        .layout-wrapper {
            display: flex;
            min-height: 100vh;
        }

        /* ===== Side Navigation (Desktop) ===== */
        .side-nav {
            width: var(--nav-width);
            min-width: var(--nav-width);
            background: var(--primary);
            color: #fff;
            display: flex;
            flex-direction: column;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 100;
            transition: transform var(--transition);
        }
        .side-nav .logo-area {
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .side-nav .logo-area a {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            text-decoration: none;
            letter-spacing: 0.5px;
        }
        .side-nav .logo-area a:hover {
            color: var(--secondary);
        }
        .side-nav .nav-list {
            flex: 1;
            padding: 16px 0;
        }
        .side-nav .nav-list li a {
            display: block;
            padding: 12px 20px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.938rem;
            font-weight: 500;
            text-decoration: none;
            transition: background var(--transition), color var(--transition);
            border-left: 4px solid transparent;
        }
        .side-nav .nav-list li a:hover {
            background: var(--secondary-light);
            color: #fff;
        }
        .side-nav .nav-list li a.active {
            background: var(--secondary-light);
            color: #fff;
            border-left-color: var(--secondary);
        }
        .side-nav .nav-footer {
            padding: 20px 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .side-nav .nav-footer .contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
            font-size: 0.813rem;
        }
        .side-nav .nav-footer .contact-item i {
            width: 16px;
            text-align: center;
            color: var(--secondary);
        }

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            z-index: 200;
            padding: 0 16px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .mobile-header .mobile-logo {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
        }
        .mobile-header .mobile-logo:hover {
            color: var(--primary-dark);
        }
        .mobile-header .hamburger {
            width: 32px;
            height: 32px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }
        .mobile-header .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .mobile-header .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(4px, 4px);
        }
        .mobile-header .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .mobile-header .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(4px, -4px);
        }

        /* Mobile overlay menu */
        .mobile-overlay {
            display: none;
            position: fixed;
            top: 56px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(30, 58, 95, 0.95);
            z-index: 199;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            padding: 40px 24px;
            gap: 12px;
            backdrop-filter: blur(4px);
        }
        .mobile-overlay.open {
            display: flex;
        }
        .mobile-overlay a {
            color: #fff;
            font-size: 1.25rem;
            font-weight: 500;
            padding: 14px 20px;
            text-decoration: none;
            width: 100%;
            max-width: 280px;
            text-align: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            transition: background var(--transition);
        }
        .mobile-overlay a:hover {
            background: var(--secondary-light);
            border-radius: var(--radius-btn);
        }
        .mobile-overlay a.active-mobile {
            color: var(--secondary);
            font-weight: 600;
        }

        /* ===== Main Content Area ===== */
        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

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

        /* ===== Section Spacing ===== */
        .section {
            padding: var(--space-section) 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            max-width: 680px;
            margin: 0 auto;
            color: var(--text-secondary);
            font-size: 1.05rem;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: var(--primary);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.45;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(30, 58, 95, 0.70) 0%, rgba(30, 58, 95, 0.85) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            padding-top: 48px;
            padding-bottom: 48px;
        }
        .hero-content {
            max-width: 640px;
        }
        .hero-content h1 {
            color: #fff;
            font-size: 2.25rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 20px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
        }
        .hero-content .hero-sub {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.125rem;
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-actions .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 14px 36px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .hero-actions .btn-primary:hover {
            background: var(--accent-hover);
            filter: brightness(0.92);
            text-decoration: none;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(214, 107, 69, 0.35);
        }
        .hero-actions .btn-primary:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 3px;
        }
        .hero-actions .btn-secondary {
            background: transparent;
            color: #fff;
            padding: 13px 36px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: 2px solid rgba(255, 255, 255, 0.7);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .hero-actions .btn-secondary:hover {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
        }
        .hero-watermark {
            position: absolute;
            right: 24px;
            bottom: 24px;
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.12);
            letter-spacing: 2px;
            z-index: 2;
            user-select: none;
            pointer-events: none;
            font-weight: 700;
        }

        /* ===== Advantage Cards ===== */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .advantage-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            border: 1px solid var(--border-color);
        }
        .advantage-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .advantage-card .adv-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--secondary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 1.5rem;
            color: var(--secondary);
        }
        .advantage-card h3 {
            margin-bottom: 8px;
            font-size: 1.1rem;
        }
        .advantage-card p {
            font-size: 0.938rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.65;
        }
        .advantage-card .adv-stat {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--secondary);
            margin-top: 12px;
        }

        /* ===== Scenario Cards ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scenario-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            border: 1px solid var(--border-color);
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .scenario-card .scenario-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
            background: var(--bg-body);
        }
        .scenario-card .scenario-body {
            padding: 20px;
        }
        .scenario-card .scenario-body h3 {
            margin-bottom: 8px;
            font-size: 1.05rem;
        }
        .scenario-card .scenario-body p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.65;
        }
        .scenario-card .scenario-tag {
            display: inline-block;
            font-size: 0.75rem;
            padding: 2px 12px;
            border-radius: 20px;
            background: var(--secondary-light);
            color: var(--secondary);
            font-weight: 500;
        }

        /* ===== Process Steps ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--border-color);
            z-index: 0;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .process-step .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.25rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            border: 3px solid var(--bg-body);
            box-shadow: 0 0 0 2px var(--border-color);
        }
        .process-step h3 {
            font-size: 1rem;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.813rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.5;
            max-width: 200px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== FAQ Accordion ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border-color);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-body);
            cursor: pointer;
            background: #fff;
            transition: background var(--transition);
            user-select: none;
            gap: 12px;
        }
        .faq-question:hover {
            background: var(--bg-body);
        }
        .faq-question .faq-toggle {
            font-size: 1.25rem;
            color: var(--secondary);
            flex-shrink: 0;
            transition: transform var(--transition);
            width: 24px;
            text-align: center;
        }
        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            background: #FDFCFA;
            padding: 0 20px;
            border-left: 4px solid var(--secondary);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 16px 20px;
        }
        .faq-answer p {
            font-size: 0.938rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ===== CTA Block ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, #2A4D72 100%);
            padding: 64px 0;
            text-align: center;
        }
        .cta-block h2 {
            color: #fff;
            font-size: 1.75rem;
            margin-bottom: 12px;
        }
        .cta-block .cta-sub {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin-bottom: 32px;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-actions .btn-cta-primary {
            background: var(--accent);
            color: #fff;
            padding: 14px 40px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .cta-actions .btn-cta-primary:hover {
            background: var(--accent-hover);
            filter: brightness(0.92);
            text-decoration: none;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(214, 107, 69, 0.35);
        }
        .cta-actions .btn-cta-secondary {
            background: transparent;
            color: #fff;
            padding: 13px 40px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: 2px solid rgba(255, 255, 255, 0.6);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .cta-actions .btn-cta-secondary:hover {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid var(--border-color);
        }
        .footer-inner {
            max-width: var(--content-max);
            margin: 0 auto;
            padding: 24px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            min-height: 60px;
        }
        .footer-inner .footer-copy {
            font-size: 0.813rem;
            color: var(--text-secondary);
        }
        .footer-inner .footer-links {
            display: flex;
            gap: 20px;
            align-items: center;
            flex-wrap: wrap;
        }
        .footer-inner .footer-links a {
            font-size: 0.813rem;
            color: var(--text-secondary);
            text-decoration: none;
        }
        .footer-inner .footer-links a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .footer-inner .footer-links span {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        /* ===== Utility ===== */
        .bg-light {
            background: var(--bg-body);
        }
        .bg-white {
            background: #fff;
        }
        .text-center {
            text-align: center;
        }
        .gap-8 {
            gap: 8px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .advantage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 24px;
            }
            .process-grid::before {
                display: none;
            }
            .hero-content h1 {
                font-size: 1.75rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: var(--space-section-mobile);
                --nav-width: 0px;
            }
            .side-nav {
                transform: translateX(-100%);
                display: none;
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 56px;
            }
            .container {
                padding: 0 16px;
            }
            h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.25rem;
            }
            .hero {
                min-height: 380px;
            }
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-content .hero-sub {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
                text-align: center;
                padding: 12px 24px;
            }
            .advantage-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .advantage-card {
                padding: 24px 20px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .scenario-card .scenario-img {
                height: 150px;
            }
            .process-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .process-step {
                display: flex;
                align-items: center;
                gap: 16px;
                text-align: left;
            }
            .process-step .step-num {
                margin: 0;
                flex-shrink: 0;
                width: 48px;
                height: 48px;
                font-size: 1rem;
            }
            .process-step p {
                max-width: none;
                margin: 0;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.938rem;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 12px 16px;
            }
            .cta-block {
                padding: 48px 0;
            }
            .cta-block h2 {
                font-size: 1.375rem;
            }
            .cta-actions {
                flex-direction: column;
                gap: 12px;
            }
            .cta-actions .btn-cta-primary,
            .cta-actions .btn-cta-secondary {
                width: 100%;
                justify-content: center;
                text-align: center;
                padding: 12px 24px;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
                padding: 20px 16px;
                gap: 8px;
            }
            .footer-inner .footer-links {
                justify-content: center;
            }
            .hero-watermark {
                right: 16px;
                bottom: 16px;
                font-size: 0.625rem;
            }
        }

        @media (max-width: 520px) {
            .hero {
                min-height: 320px;
            }
            .hero-content h1 {
                font-size: 1.25rem;
            }
            .hero-content .hero-sub {
                font-size: 0.875rem;
            }
            .section {
                padding: 32px 0;
            }
            .advantage-card .adv-icon {
                width: 40px;
                height: 40px;
                font-size: 1.25rem;
            }
            .scenario-card .scenario-body {
                padding: 16px;
            }
            .scenario-card .scenario-body h3 {
                font-size: 0.938rem;
            }
            .scenario-card .scenario-body p {
                font-size: 0.813rem;
            }
            .process-step .step-num {
                width: 40px;
                height: 40px;
                font-size: 0.875rem;
            }
            .process-step h3 {
                font-size: 0.875rem;
            }
            .process-step p {
                font-size: 0.75rem;
            }
            .footer-inner .footer-copy {
                font-size: 0.75rem;
            }
            .footer-inner .footer-links a {
                font-size: 0.75rem;
            }
        }

        /* ===== Smooth fade-in on load ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .hero-content {
            animation: fadeUp 0.7s ease forwards;
        }
        .section .advantage-card,
        .section .scenario-card,
        .section .process-step {
            animation: fadeUp 0.5s ease forwards;
        }