/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --primary-dark: #1E3A4A;
        --primary-mid: #2A5A4E;
        --primary-gradient: linear-gradient(135deg, #1E3A4A 0%, #2A5A4E 100%);
        --accent-gold: #D4AF37;
        --accent-gold-light: rgba(212, 175, 55, 0.25);
        --bg-light: #F5F7FA;
        --bg-white: #FFFFFF;
        --text-dark: #1E3A4A;
        --text-body: #333333;
        --text-muted: #666666;
        --text-light: #F5F7FA;
        --border-color: #E0E4E8;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
        --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
        --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
        --radius-sm: 8px;
        --radius-md: 16px;
        --radius-lg: 24px;
        --radius-full: 50%;
        --font-stack: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
        --transition: all 0.3s ease;
    }

    /* ===== Reset / Base ===== */
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
        font-family: var(--font-stack);
        font-size: 1rem;
        line-height: 1.6;
        color: var(--text-body);
        background: var(--bg-light);
        -webkit-font-smoothing: antialiased;
        margin: 0;
        padding: 0;
    }
    a { color: var(--primary-mid); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--accent-gold); }
    img { max-width: 100%; height: auto; display: block; }
    button, input, textarea { font-family: var(--font-stack); }
    ul, ol { padding-left: 1.25rem; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-dark); margin-top: 0; }

    /* ===== 容器 ===== */
    .container { max-width: 1200px; padding: 0 20px; margin: 0 auto; }

    /* ===== 区块间距 ===== */
    .section-padding { padding: 80px 0; }
    @media (max-width: 768px) { .section-padding { padding: 48px 0; } }

    /* ===== 按钮 ===== */
    .btn-custom {
        display: inline-flex; align-items: center; gap: 8px;
        padding: 12px 28px; border-radius: var(--radius-sm);
        font-weight: 600; font-size: 1rem; line-height: 1.4;
        border: none; cursor: pointer; transition: var(--transition);
        background: var(--primary-gradient); color: #fff;
        box-shadow: 0 2px 8px rgba(30,58,74,0.25);
    }
    .btn-custom:hover { background: var(--accent-gold); color: var(--text-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(212,175,55,0.35); }
    .btn-custom:active { transform: translateY(0); }
    .btn-custom-outline {
        background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.7);
        box-shadow: none;
    }
    .btn-custom-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; color: #fff; }
    .btn-custom-sm { padding: 8px 20px; font-size: 0.875rem; }

    /* ===== 标签 / Pill ===== */
    .tag-pill {
        display: inline-block; padding: 4px 14px; border-radius: 20px;
        font-size: 0.8rem; font-weight: 500; color: var(--text-body);
        background: var(--bg-light); border: 1px solid var(--border-color);
        transition: var(--transition);
    }
    .tag-pill:hover { background: var(--accent-gold-light); border-color: var(--accent-gold); color: var(--text-dark); }
    .tag-pill.active { background: var(--primary-gradient); color: #fff; border-color: transparent; }
    .tag-pill-sm { padding: 2px 10px; font-size: 0.75rem; }

    /* ===== 卡片 ===== */
    .card-custom {
        background: var(--bg-white); border-radius: var(--radius-md);
        box-shadow: var(--shadow-md); padding: 24px;
        transition: var(--transition); border: none; height: 100%;
    }
    .card-custom:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
    .card-custom-img { border-radius: var(--radius-md) var(--radius-md) 0 0; overflow: hidden; margin: -24px -24px 16px -24px; }
    .card-custom-img img { width: 100%; height: 200px; object-fit: cover; }

    /* ===== 数据徽章 ===== */
    .stat-badge {
        display: flex; flex-direction: column; align-items: center; justify-content: center;
        width: 140px; height: 140px; border-radius: var(--radius-md);
        background: var(--primary-gradient); padding: 16px; margin: 0 auto;
        transition: var(--transition); box-shadow: var(--shadow-md);
    }
    .stat-badge:hover { transform: scale(1.05); box-shadow: var(--shadow-lg); }
    .stat-badge .stat-number { font-size: 2.2rem; font-weight: 800; color: #fff; line-height: 1.2; }
    .stat-badge .stat-label { font-size: 0.85rem; font-weight: 400; color: rgba(255,255,255,0.85); margin-top: 4px; text-align: center; }
    @media (max-width: 768px) { .stat-badge { width: 120px; height: 120px; } .stat-badge .stat-number { font-size: 1.8rem; } }

    /* ===== 导航 ===== */
    .navbar-top {
        background: var(--primary-gradient); height: 56px;
        display: flex; align-items: center;
    }
    .navbar-top .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
    .navbar-brand-custom {
        display: flex; align-items: center; gap: 8px;
        font-size: 1.5rem; font-weight: 700; color: #fff;
        text-decoration: none; letter-spacing: 0.5px;
    }
    .navbar-brand-custom:hover { color: var(--accent-gold); }
    .navbar-brand-custom i { font-size: 1.6rem; color: var(--accent-gold); }
    .nav-top-right { display: flex; align-items: center; gap: 16px; }
    .nav-search { display: flex; align-items: center; background: rgba(255,255,255,0.2); border-radius: 20px; padding: 4px 12px; }
    .nav-search input { background: transparent; border: none; color: #fff; padding: 6px 10px; font-size: 0.875rem; outline: none; min-width: 160px; }
    .nav-search input::placeholder { color: rgba(255,255,255,0.6); }
    .nav-search button { background: transparent; border: none; color: #fff; cursor: pointer; padding: 4px 8px; }
    .nav-search button:hover { color: var(--accent-gold); }
    .btn-nav-cta { background: var(--accent-gold); color: var(--text-dark); border-radius: 20px; padding: 6px 18px; font-weight: 600; font-size: 0.875rem; border: none; transition: var(--transition); }
    .btn-nav-cta:hover { background: #fff; color: var(--primary-dark); }

    .navbar-tabs {
        background: var(--bg-white); border-bottom: 1px solid var(--border-color);
        height: 48px; display: flex; align-items: center; box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    }
    .navbar-tabs .container { display: flex; align-items: center; overflow-x: auto; white-space: nowrap; gap: 6px; padding: 0 20px; scrollbar-width: none; }
    .navbar-tabs .container::-webkit-scrollbar { display: none; }
    .nav-tab-link {
        display: inline-flex; align-items: center; padding: 6px 18px; border-radius: 20px;
        font-size: 0.9rem; font-weight: 500; color: var(--text-muted);
        transition: var(--transition); text-decoration: none; background: transparent;
        border: 1px solid transparent;
    }
    .nav-tab-link:hover { background: var(--accent-gold-light); color: var(--text-dark); border-color: var(--accent-gold); }
    .nav-tab-link.active { background: var(--primary-gradient); color: #fff; border-color: transparent; }

    /* ===== Hero ===== */
    .hero-section {
        position: relative; min-height: 70vh; display: flex; align-items: center;
        background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
    }
    .hero-section::before {
        content: ''; position: absolute; inset: 0;
        background: linear-gradient(135deg, rgba(30,58,74,0.75) 0%, rgba(42,90,78,0.65) 100%);
    }
    .hero-content { position: relative; z-index: 2; text-align: center; padding: 60px 0; }
    .hero-content h1 { font-size: 3rem; font-weight: 700; color: #fff; margin-bottom: 16px; text-shadow: 0 2px 12px rgba(0,0,0,0.3); }
    .hero-content .hero-sub { font-size: 1.2rem; color: rgba(255,255,255,0.85); max-width: 640px; margin: 0 auto 32px; line-height: 1.7; }
    .hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
    @media (max-width: 768px) { .hero-content h1 { font-size: 2rem; } .hero-content .hero-sub { font-size: 1rem; } .hero-section { min-height: 56vh; } }

    /* ===== 痛点区块 ===== */
    .pain-point-card { background: var(--bg-white); border-radius: var(--radius-md); padding: 32px 24px; box-shadow: var(--shadow-sm); transition: var(--transition); height: 100%; border-left: 4px solid var(--accent-gold); }
    .pain-point-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
    .pain-point-card .icon { font-size: 2rem; color: var(--primary-mid); margin-bottom: 16px; }
    .pain-point-card h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; color: var(--text-dark); }
    .pain-point-card p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

    /* ===== 解决方案区块 ===== */
    .solution-wrap { background: var(--bg-white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
    .solution-list { padding: 32px 40px; display: flex; flex-direction: column; gap: 24px; }
    .solution-list .item { display: flex; gap: 16px; align-items: flex-start; }
    .solution-list .item .num { font-size: 1.5rem; font-weight: 800; color: var(--accent-gold); line-height: 1; min-width: 36px; }
    .solution-list .item h5 { font-size: 1.05rem; font-weight: 600; margin: 0 0 4px; color: var(--text-dark); }
    .solution-list .item p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }
    .solution-image { height: 100%; min-height: 320px; background: url('/assets/images/coverpic/cover-2.webp') center center / cover no-repeat; }
    @media (max-width: 768px) { .solution-list { padding: 24px 20px; } .solution-image { min-height: 200px; } }

    /* ===== 客户证言 ===== */
    .testimonial-card { background: var(--bg-white); border-radius: var(--radius-md); padding: 28px 24px; box-shadow: var(--shadow-sm); transition: var(--transition); height: 100%; }
    .testimonial-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
    .testimonial-card .quote { font-size: 0.95rem; color: var(--text-body); line-height: 1.7; margin-bottom: 20px; font-style: italic; position: relative; padding-left: 20px; border-left: 3px solid var(--accent-gold); }
    .testimonial-card .author { display: flex; align-items: center; gap: 12px; }
    .testimonial-card .author img { width: 48px; height: 48px; border-radius: var(--radius-full); object-fit: cover; }
    .testimonial-card .author .name { font-weight: 600; font-size: 0.95rem; color: var(--text-dark); }
    .testimonial-card .author .title { font-size: 0.8rem; color: var(--text-muted); }

    /* ===== 最新资讯 ===== */
    .news-card { background: var(--bg-white); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); height: 100%; display: flex; flex-direction: column; }
    .news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
    .news-card .cover { height: 180px; background: var(--border-color); overflow: hidden; }
    .news-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
    .news-card:hover .cover img { transform: scale(1.05); }
    .news-card .body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
    .news-card .body .meta { display: flex; align-items: center; gap: 10px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 8px; }
    .news-card .body .meta .cat { background: var(--accent-gold-light); color: var(--text-dark); padding: 2px 10px; border-radius: 12px; font-size: 0.75rem; font-weight: 500; }
    .news-card .body h5 { font-size: 1rem; font-weight: 600; margin: 0 0 8px; color: var(--text-dark); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .news-card .body p { font-size: 0.85rem; color: var(--text-muted); margin: 0 0 12px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .news-card .body .read-more { font-size: 0.85rem; font-weight: 600; color: var(--primary-mid); display: inline-flex; align-items: center; gap: 6px; }
    .news-card .body .read-more:hover { color: var(--accent-gold); }
    .news-empty { text-align: center; padding: 40px 20px; color: var(--text-muted); font-size: 1rem; }
    .news-empty i { font-size: 2.4rem; color: var(--border-color); margin-bottom: 12px; display: block; }

    /* ===== CTA ===== */
    .cta-section { background: var(--primary-gradient); padding: 80px 0; text-align: center; }
    .cta-section h2 { color: #fff; font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
    .cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 560px; margin: 0 auto 28px; }

    /* ===== FAQ 手风琴 ===== */
    .accordion-custom .accordion-item { border: none; border-radius: var(--radius-sm); margin-bottom: 8px; background: var(--bg-white); box-shadow: var(--shadow-sm); overflow: hidden; }
    .accordion-custom .accordion-header { background: var(--bg-white); }
    .accordion-custom .accordion-button { background: var(--bg-white); color: var(--text-dark); font-weight: 500; font-size: 1rem; padding: 16px 20px; border: none; box-shadow: none; }
    .accordion-custom .accordion-button:not(.collapsed) { background: var(--bg-white); color: var(--primary-mid); }
    .accordion-custom .accordion-button:focus { box-shadow: none; }
    .accordion-custom .accordion-button::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%231E3A4A' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E"); transition: transform 0.3s; }
    .accordion-custom .accordion-button:not(.collapsed)::after { transform: rotate(-180deg); }
    .accordion-custom .accordion-body { padding: 0 20px 20px; color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; }

    /* ===== 页脚 ===== */
    .footer { background: var(--primary-gradient); color: rgba(255,255,255,0.85); padding: 48px 0 24px; }
    .footer .brand { font-size: 1.4rem; font-weight: 700; color: #fff; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
    .footer .brand i { color: var(--accent-gold); }
    .footer .brand:hover { color: var(--accent-gold); }
    .footer .desc { font-size: 0.9rem; max-width: 320px; line-height: 1.7; margin-bottom: 16px; }
    .footer .social a { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: var(--radius-full); background: rgba(255,255,255,0.1); color: #fff; font-size: 1.1rem; margin-right: 8px; transition: var(--transition); }
    .footer .social a:hover { background: var(--accent-gold); color: var(--text-dark); }
    .footer .links h6 { color: #fff; font-weight: 600; margin-bottom: 12px; font-size: 1rem; }
    .footer .links ul { list-style: none; padding: 0; margin: 0; }
    .footer .links ul li { margin-bottom: 6px; }
    .footer .links ul a { color: rgba(255,255,255,0.7); font-size: 0.88rem; transition: var(--transition); }
    .footer .links ul a:hover { color: var(--accent-gold); padding-left: 4px; }
    .footer .divider { border-top: 1px solid rgba(255,255,255,0.15); margin: 24px 0 16px; }
    .footer .copyright { font-size: 0.82rem; color: rgba(255,255,255,0.6); text-align: center; }
    .footer .copyright a { color: rgba(255,255,255,0.7); }
    .footer .copyright a:hover { color: var(--accent-gold); }

    /* ===== 响应式增强 ===== */
    @media (max-width: 992px) {
        .nav-search input { min-width: 100px; }
        .hero-content h1 { font-size: 2.2rem; }
    }
    @media (max-width: 768px) {
        .navbar-top { height: auto; padding: 8px 0; }
        .navbar-brand-custom { font-size: 1.2rem; }
        .nav-search { display: none; }
        .btn-nav-cta { padding: 4px 14px; font-size: 0.8rem; }
        .navbar-tabs { height: 44px; }
        .nav-tab-link { padding: 4px 14px; font-size: 0.8rem; }
        .hero-content h1 { font-size: 1.7rem; }
        .hero-content .hero-sub { font-size: 0.95rem; }
        .section-padding { padding: 40px 0; }
        .stat-badge { width: 104px; height: 104px; } .stat-badge .stat-number { font-size: 1.5rem; }
        .cta-section { padding: 48px 0; } .cta-section h2 { font-size: 1.5rem; }
        .footer .brand { font-size: 1.2rem; }
    }
    @media (max-width: 576px) {
        .container { padding: 0 16px; }
        .hero-content h1 { font-size: 1.4rem; }
        .hero-btns .btn-custom { padding: 10px 20px; font-size: 0.9rem; }
        .pain-point-card { padding: 24px 16px; }
        .news-card .cover { height: 140px; }
    }

    /* ===== 辅助 ===== */
    .text-accent { color: var(--accent-gold); }
    .bg-light-custom { background: var(--bg-light); }
    .bg-white-custom { background: var(--bg-white); }
    .section-title { font-size: 2rem; font-weight: 600; margin-bottom: 12px; color: var(--text-dark); }
    .section-subtitle { font-size: 1rem; color: var(--text-muted); max-width: 600px; margin: 0 auto 40px; text-align: center; }
    @media (max-width: 768px) { .section-title { font-size: 1.5rem; } .section-subtitle { font-size: 0.9rem; margin-bottom: 28px; } }
    .gap-grid { gap: 24px; }
    .rounded-custom { border-radius: var(--radius-md); }
    .shadow-hover { transition: var(--transition); }
    .shadow-hover:hover { box-shadow: var(--shadow-lg); }

    /* ===== 分类页通用样式（首页也会用到部分） ===== */
    .category-hero { min-height: 40vh; display: flex; align-items: center; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; position: relative; }
    .category-hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(30,58,74,0.8) 0%, rgba(42,90,78,0.7) 100%); }
    .category-hero .hero-content { position: relative; z-index: 2; }
    .category-hero h1 { font-size: 2.6rem; font-weight: 700; color: #fff; }
    .category-hero p { color: rgba(255,255,255,0.85); font-size: 1.05rem; max-width: 600px; margin: 12px 0 0; }
    @media (max-width: 768px) { .category-hero { min-height: 32vh; } .category-hero h1 { font-size: 1.8rem; } }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary-dark: #1E3A4A;
            --primary-mid: #2A5A4E;
            --primary-gradient: linear-gradient(135deg, #1E3A4A 0%, #2A5A4E 100%);
            --accent-gold: #D4AF37;
            --accent-gold-light: rgba(212, 175, 55, 0.15);
            --bg-light: #F5F7FA;
            --bg-white: #FFFFFF;
            --text-dark: #1E3A4A;
            --text-body: #333333;
            --text-muted: #666666;
            --text-light: #e8eaed;
            --border-light: #e2e5ea;
            --radius-card: 16px;
            --radius-lg: 24px;
            --radius-pill: 20px;
            --radius-btn: 8px;
            --shadow-card: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.15);
            --shadow-hero: 0 4px 20px rgba(0,0,0,0.25);
            --transition-base: 0.25s ease;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
            --container-max: 1200px;
            --section-pad: 72px;
            --section-pad-mobile: 40px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.6;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary-mid); text-decoration: none; transition: color var(--transition-base); }
        a:hover { color: var(--accent-gold); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: var(--container-max); padding-left: 20px; padding-right: 20px; }
        /* ===== Header & Nav ===== */
        header { position: sticky; top: 0; z-index: 1050; box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
        .navbar-top {
            background: var(--primary-gradient);
            height: 60px;
            display: flex;
            align-items: center;
        }
        .navbar-top .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .navbar-brand-custom {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.5rem; font-weight: 700; color: #fff !important; letter-spacing: 0.5px;
            text-decoration: none;
        }
        .navbar-brand-custom i { font-size: 1.6rem; color: var(--accent-gold); }
        .navbar-brand-custom:hover { color: var(--accent-gold) !important; }
        .nav-top-right { display: flex; align-items: center; gap: 16px; }
        .nav-search { display: flex; align-items: center; background: rgba(255,255,255,0.2); border-radius: var(--radius-pill); padding: 2px 2px 2px 16px; backdrop-filter: blur(4px); }
        .nav-search input { background: transparent; border: none; color: #fff; font-size: 0.9rem; width: 180px; outline: none; }
        .nav-search input::placeholder { color: rgba(255,255,255,0.7); }
        .nav-search button { background: var(--accent-gold); border: none; border-radius: 50%; width: 34px; height: 34px; display: flex; align-items: center; justify-content: center; color: var(--primary-dark); transition: background var(--transition-base); }
        .nav-search button:hover { background: #fff; }
        .btn-nav-cta {
            background: var(--accent-gold); color: var(--primary-dark) !important; border-radius: var(--radius-btn);
            padding: 8px 22px; font-weight: 600; font-size: 0.9rem; transition: all var(--transition-base);
            text-decoration: none; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
        }
        .btn-nav-cta:hover { background: #fff; color: var(--primary-dark) !important; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(212,175,55,0.4); }

        /* Second Row Tabs */
        .navbar-tabs {
            background: #fff; border-bottom: 1px solid var(--border-light); height: 48px;
            display: flex; align-items: center; overflow-x: auto; scrollbar-width: none;
        }
        .navbar-tabs::-webkit-scrollbar { display: none; }
        .navbar-tabs .container { display: flex; align-items: center; gap: 4px; flex-wrap: nowrap; overflow-x: auto; padding-top: 4px; padding-bottom: 4px; }
        .nav-tab-link {
            display: inline-block; padding: 6px 18px; border-radius: var(--radius-pill);
            font-size: 0.9rem; font-weight: 500; color: #555; text-decoration: none; white-space: nowrap;
            transition: all var(--transition-base); background: transparent; border: none;
        }
        .nav-tab-link:hover { background: var(--accent-gold-light); color: var(--primary-dark); }
        .nav-tab-link.active { background: var(--primary-gradient); color: #fff; box-shadow: 0 2px 8px rgba(30,58,74,0.25); }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: #fff; border-bottom: 1px solid var(--border-light); padding: 12px 0;
        }
        .breadcrumb-wrap .breadcrumb { margin: 0; background: transparent; font-size: 0.85rem; }
        .breadcrumb-wrap .breadcrumb-item + .breadcrumb-item::before { color: var(--text-muted); content: "›"; }
        .breadcrumb-wrap .breadcrumb-item a { color: var(--text-muted); }
        .breadcrumb-wrap .breadcrumb-item a:hover { color: var(--primary-mid); }
        .breadcrumb-wrap .breadcrumb-item.active { color: var(--primary-dark); font-weight: 500; }

        /* ===== Article Main ===== */
        .article-main { padding: 56px 0 64px; }
        .article-container { max-width: 780px; margin: 0 auto; }
        .article-header { margin-bottom: 40px; }
        .article-header h1 {
            font-size: 2.2rem; font-weight: 700; color: var(--text-dark); line-height: 1.3;
            background: var(--primary-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text; margin-bottom: 16px;
        }
        .article-meta { display: flex; flex-wrap: wrap; gap: 12px 24px; font-size: 0.9rem; color: var(--text-muted); align-items: center; }
        .article-meta .category-badge {
            background: var(--accent-gold-light); color: var(--primary-dark); padding: 4px 14px;
            border-radius: var(--radius-pill); font-size: 0.8rem; font-weight: 600; display: inline-block;
        }
        .article-meta i { margin-right: 6px; }
        .article-featured-img { margin: 24px 0 32px; border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-card); }
        .article-featured-img img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
        /* Article Content */
        .article-content { font-size: 1.05rem; line-height: 1.85; color: var(--text-body); }
        .article-content h2 { font-size: 1.6rem; font-weight: 600; color: var(--text-dark); margin-top: 40px; margin-bottom: 16px; }
        .article-content h3 { font-size: 1.3rem; font-weight: 600; color: var(--primary-mid); margin-top: 32px; margin-bottom: 12px; }
        .article-content p { margin-bottom: 18px; }
        .article-content blockquote {
            border-left: 4px solid var(--accent-gold); background: var(--accent-gold-light); padding: 16px 24px;
            margin: 24px 0; border-radius: 0 var(--radius-btn) var(--radius-btn) 0; font-style: italic; color: var(--text-dark);
        }
        .article-content ul, .article-content ol { padding-left: 24px; margin-bottom: 18px; }
        .article-content li { margin-bottom: 8px; }
        .article-content img { border-radius: var(--radius-card); margin: 24px auto; box-shadow: var(--shadow-card); }
        .article-content a { color: var(--primary-mid); font-weight: 500; text-decoration: underline; text-underline-offset: 3px; }
        .article-content a:hover { color: var(--accent-gold); }

        /* Not Found */
        .article-not-found { text-align: center; padding: 80px 20px; }
        .article-not-found i { font-size: 4rem; color: var(--text-muted); margin-bottom: 24px; opacity: 0.5; }
        .article-not-found h2 { font-size: 1.8rem; color: var(--text-dark); margin-bottom: 12px; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found .btn-back-home {
            background: var(--primary-gradient); color: #fff; border: none; padding: 12px 32px;
            border-radius: var(--radius-btn); font-weight: 600; transition: all var(--transition-base);
            text-decoration: none; display: inline-block;
        }
        .article-not-found .btn-back-home:hover { background: var(--accent-gold); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(212,175,55,0.35); }

        /* ===== Related Articles ===== */
        .related-section { padding: 56px 0 64px; background: #fff; }
        .related-section h2 {
            font-size: 1.6rem; font-weight: 600; color: var(--text-dark); margin-bottom: 32px; text-align: center;
        }
        .related-card {
            background: #fff; border-radius: var(--radius-card); box-shadow: var(--shadow-card);
            overflow: hidden; transition: all var(--transition-base); height: 100%; border: 1px solid var(--border-light);
        }
        .related-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); }
        .related-card .card-img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: var(--bg-light); }
        .related-card .card-body { padding: 20px; }
        .related-card .card-title { font-size: 1.05rem; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-text { font-size: 0.9rem; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; }
        .related-card .card-link { color: var(--primary-mid); font-weight: 500; font-size: 0.9rem; }
        .related-card .card-link i { transition: transform var(--transition-base); }
        .related-card .card-link:hover i { transform: translateX(4px); }
        .related-divider { margin-top: 12px; padding-top: 16px; border-top: 1px solid var(--border-light); }
        /* ===== Back Button ===== */
        .back-section { text-align: center; padding: 32px 0 16px; }
        .btn-back {
            background: transparent; border: 2px solid var(--primary-mid); color: var(--primary-mid);
            padding: 10px 32px; border-radius: var(--radius-btn); font-weight: 600; transition: all var(--transition-base);
            text-decoration: none; display: inline-flex; align-items: center; gap: 8px;
        }
        .btn-back:hover { background: var(--primary-gradient); border-color: transparent; color: #fff; transform: translateY(-2px); }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-gradient); color: rgba(255,255,255,0.9); padding: 56px 0 28px;
        }
        .footer .brand { font-size: 1.6rem; font-weight: 700; color: #fff !important; display: flex; align-items: center; gap: 10px; margin-bottom: 16px; text-decoration: none; }
        .footer .brand i { color: var(--accent-gold); }
        .footer .desc { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.75); max-width: 420px; margin-bottom: 20px; }
        .footer .social { display: flex; gap: 12px; }
        .footer .social a { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.12); color: #fff !important; font-size: 1.1rem; transition: all var(--transition-base); text-decoration: none; }
        .footer .social a:hover { background: var(--accent-gold); color: var(--primary-dark) !important; transform: translateY(-2px); }
        .footer .links h6 { color: #fff; font-weight: 600; font-size: 1rem; margin-bottom: 18px; letter-spacing: 0.5px; }
        .footer .links ul { list-style: none; padding: 0; margin: 0; }
        .footer .links ul li { margin-bottom: 10px; }
        .footer .links ul li a { color: rgba(255,255,255,0.75) !important; font-size: 0.9rem; transition: color var(--transition-base); text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
        .footer .links ul li a:hover { color: var(--accent-gold) !important; }
        .footer .divider { height: 1px; background: rgba(255,255,255,0.15); margin: 32px 0 24px; }
        .footer .copyright { font-size: 0.85rem; color: rgba(255,255,255,0.6); text-align: center; }
        .footer .copyright a { color: rgba(255,255,255,0.8) !important; }
        .footer .copyright a:hover { color: var(--accent-gold) !important; }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .navbar-top { height: auto; padding: 8px 0; }
            .navbar-top .container { flex-wrap: wrap; gap: 8px; }
            .nav-search input { width: 140px; }
            .article-header h1 { font-size: 1.8rem; }
        }
        @media (max-width: 767px) {
            :root { --section-pad: var(--section-pad-mobile); }
            .navbar-top .container { flex-direction: column; align-items: stretch; gap: 6px; }
            .nav-top-right { justify-content: space-between; width: 100%; }
            .nav-search { flex: 1; }
            .nav-search input { width: 100%; }
            .btn-nav-cta { padding: 6px 16px; font-size: 0.8rem; }
            .navbar-tabs { height: auto; padding: 4px 0; }
            .navbar-tabs .container { padding-left: 12px; padding-right: 12px; }
            .nav-tab-link { padding: 5px 14px; font-size: 0.8rem; }
            .article-main { padding: 32px 0 40px; }
            .article-container { padding: 0 16px; }
            .article-header h1 { font-size: 1.5rem; }
            .article-content { font-size: 0.95rem; }
            .article-meta { gap: 8px 16px; font-size: 0.8rem; }
            .related-section { padding: 40px 0; }
            .related-section h2 { font-size: 1.3rem; }
            .footer { padding: 40px 0 24px; }
            .footer .brand { font-size: 1.3rem; }
            .footer .desc { max-width: 100%; }
        }
        @media (max-width: 575px) {
            .article-header h1 { font-size: 1.3rem; }
            .article-content { font-size: 0.9rem; }
            .btn-nav-cta { display: none; }
            .nav-search input { width: 100px; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary-dark: #1E3A4A;
            --primary-mid: #2A5A4E;
            --accent-gold: #D4AF37;
            --accent-gold-light: #e8c95a;
            --bg-light: #F5F7FA;
            --bg-white: #FFFFFF;
            --text-dark: #1E3A4A;
            --text-body: #333333;
            --text-muted: #666666;
            --text-light: #999999;
            --border-color: #e8ecf0;
            --radius-card: 16px;
            --radius-lg: 24px;
            --radius-btn: 8px;
            --radius-pill: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.15);
            --transition: all 0.3s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
            --container-width: 1200px;
            --section-padding: 72px 0;
            --section-padding-mobile: 48px 0;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.6;
            color: var(--text-body);
            background: var(--bg-light);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary-mid);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-gold);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            padding-left: 0;
            list-style: none;
            margin-bottom: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 600;
            line-height: 1.3;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-width);
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        /* ===== 导航 ===== */
        .navbar-top {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            height: 60px;
            display: flex;
            align-items: center;
            position: relative;
            z-index: 1030;
        }

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

        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff !important;
            text-decoration: none;
            letter-spacing: 0.5px;
        }
        .navbar-brand-custom i {
            font-size: 1.8rem;
            color: var(--accent-gold);
        }

        .nav-top-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-pill);
            padding: 0 12px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .nav-search input {
            background: transparent;
            border: none;
            padding: 7px 10px 7px 0;
            color: #fff;
            font-size: 0.875rem;
            width: 180px;
            outline: none;
        }
        .nav-search input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }
        .nav-search button {
            background: transparent;
            border: none;
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.9rem;
            cursor: pointer;
            padding: 4px 0 4px 8px;
            transition: var(--transition);
        }
        .nav-search button:hover {
            color: var(--accent-gold);
        }

        .btn-nav-cta {
            background: var(--accent-gold);
            color: var(--text-dark) !important;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.875rem;
            transition: var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-nav-cta:hover {
            background: var(--accent-gold-light);
            color: var(--text-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(212, 175, 55, 0.4);
        }

        /* 第二行 Tabs */
        .navbar-tabs {
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            height: 48px;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 1020;
        }
        .navbar-tabs .container {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding-bottom: 2px;
        }
        .navbar-tabs .container::-webkit-scrollbar {
            display: none;
        }

        .nav-tab-link {
            display: inline-flex;
            align-items: center;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.875rem;
            font-weight: 500;
            color: #555;
            transition: var(--transition);
            background: transparent;
            text-decoration: none;
            margin: 0 2px;
            flex-shrink: 0;
        }
        .nav-tab-link:hover {
            background: rgba(212, 175, 55, 0.18);
            color: var(--text-dark);
        }
        .nav-tab-link.active {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            color: #fff !important;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(30, 58, 74, 0.25);
        }
        .nav-tab-link.active:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            color: #fff !important;
        }

        /* ===== 移动端导航适配 ===== */
        @media (max-width: 768px) {
            .navbar-top {
                height: 56px;
            }
            .navbar-brand-custom {
                font-size: 1.2rem;
            }
            .navbar-brand-custom i {
                font-size: 1.4rem;
            }
            .nav-search input {
                width: 120px;
                font-size: 0.8rem;
            }
            .btn-nav-cta {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .nav-top-right {
                gap: 10px;
            }
            .navbar-tabs {
                height: 44px;
            }
            .nav-tab-link {
                padding: 5px 14px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 576px) {
            .navbar-brand-custom {
                font-size: 1rem;
                gap: 6px;
            }
            .navbar-brand-custom i {
                font-size: 1.2rem;
            }
            .nav-search input {
                width: 80px;
            }
            .btn-nav-cta {
                padding: 5px 10px;
                font-size: 0.75rem;
            }
            .nav-top-right {
                gap: 6px;
            }
            .nav-tab-link {
                padding: 4px 10px;
                font-size: 0.75rem;
            }
        }

        /* ===== Hero 内页横幅 ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            background-blend-mode: overlay;
            padding: 80px 0 72px;
            text-align: center;
            position: relative;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(30, 58, 74, 0.35);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
        }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 700px;
            margin: 0 auto 28px;
            line-height: 1.7;
            text-shadow: 0 1px 6px rgba(0, 0, 0, 0.15);
        }
        .page-hero .hero-cta {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .page-hero .btn-primary-custom {
            background: var(--accent-gold);
            color: var(--text-dark) !important;
            padding: 12px 32px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .page-hero .btn-primary-custom:hover {
            background: var(--accent-gold-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
        }
        .page-hero .btn-outline-custom {
            background: transparent;
            color: #fff !important;
            padding: 12px 32px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.7);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .page-hero .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 56px 0 48px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .page-hero .btn-primary-custom,
            .page-hero .btn-outline-custom {
                padding: 10px 24px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 576px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero p {
                font-size: 0.9rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--section-padding);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .section-title p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .title-line {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-gold), var(--primary-mid));
            border-radius: 4px;
            margin: 16px auto 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-padding-mobile);
            }
            .section-title {
                margin-bottom: 32px;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
        }

        /* ===== 产品分类 Tabs（内页导航） ===== */
        .product-tabs {
            display: flex;
            justify-content: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .product-tab-btn {
            padding: 8px 24px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            font-weight: 500;
            background: #fff;
            color: var(--text-body);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
        }
        .product-tab-btn:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }
        .product-tab-btn.active {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            color: #fff;
            border-color: transparent;
            box-shadow: 0 2px 10px rgba(30, 58, 74, 0.2);
        }

        @media (max-width: 576px) {
            .product-tabs {
                gap: 6px;
            }
            .product-tab-btn {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
        }

        /* ===== 产品卡片网格 ===== */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .product-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .product-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .product-card .card-img {
            height: 200px;
            background: var(--bg-light);
            overflow: hidden;
            position: relative;
        }
        .product-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .product-card:hover .card-img img {
            transform: scale(1.05);
        }
        .product-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .product-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .product-card .card-body .desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .product-card .card-body .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
            margin-top: auto;
        }
        .product-card .card-body .meta .tag {
            background: rgba(212, 175, 55, 0.15);
            color: var(--accent-gold);
            padding: 2px 12px;
            border-radius: var(--radius-pill);
            font-weight: 500;
            font-size: 0.75rem;
        }
        .product-card .card-body .meta a {
            color: var(--primary-mid);
            font-weight: 500;
            font-size: 0.85rem;
        }
        .product-card .card-body .meta a i {
            transition: var(--transition);
        }
        .product-card .card-body .meta a:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 992px) {
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 576px) {
            .product-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .product-card .card-img {
                height: 180px;
            }
            .product-card .card-body {
                padding: 18px;
            }
        }

        /* ===== 产品特色区块（图文交替） ===== */
        .feature-block {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 64px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .feature-block:last-child {
            margin-bottom: 0;
        }
        .feature-block.reverse {
            flex-direction: row-reverse;
        }
        .feature-block .feature-image {
            flex: 0 0 45%;
            min-height: 320px;
            background: var(--bg-light);
            overflow: hidden;
        }
        .feature-block .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-block .feature-content {
            flex: 1;
            padding: 40px 40px 40px 0;
        }
        .feature-block.reverse .feature-content {
            padding: 40px 0 40px 40px;
        }
        .feature-block .feature-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }
        .feature-block .feature-content p {
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            font-size: 0.95rem;
        }
        .feature-block .feature-content ul {
            padding-left: 0;
            list-style: none;
        }
        .feature-block .feature-content ul li {
            padding: 6px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-body);
            font-size: 0.9rem;
        }
        .feature-block .feature-content ul li i {
            color: var(--accent-gold);
            font-size: 1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .feature-block .feature-content .btn-feature {
            margin-top: 16px;
            background: var(--primary-mid);
            color: #fff;
            padding: 10px 28px;
            border-radius: var(--radius-btn);
            font-weight: 500;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .feature-block .feature-content .btn-feature:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(30, 58, 74, 0.3);
        }

        @media (max-width: 992px) {
            .feature-block,
            .feature-block.reverse {
                flex-direction: column;
            }
            .feature-block .feature-image {
                flex: none;
                width: 100%;
                min-height: 240px;
            }
            .feature-block .feature-content {
                padding: 28px 24px !important;
            }
            .feature-block .feature-content h3 {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 576px) {
            .feature-block .feature-image {
                min-height: 180px;
            }
            .feature-block .feature-content {
                padding: 20px 16px !important;
            }
            .feature-block .feature-content h3 {
                font-size: 1.1rem;
            }
        }

        /* ===== 适用场景卡片 ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .scene-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .scene-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--accent-gold);
        }
        .scene-card .icon {
            font-size: 2.4rem;
            color: var(--primary-mid);
            margin-bottom: 16px;
        }
        .scene-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .scene-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        @media (max-width: 992px) {
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 576px) {
            .scene-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .scene-card {
                padding: 24px 16px;
            }
        }

        /* ===== 数据/统计徽章 ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-badge {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            border-radius: var(--radius-card);
            padding: 32px 16px;
            color: #fff;
            transition: var(--transition);
        }
        .stat-badge:hover {
            transform: scale(1.04);
            box-shadow: 0 8px 24px rgba(30, 58, 74, 0.3);
        }
        .stat-badge .number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-badge .label {
            font-size: 0.9rem;
            font-weight: 400;
            opacity: 0.9;
        }

        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-badge {
                padding: 24px 12px;
            }
            .stat-badge .number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 576px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .stat-badge {
                padding: 18px 10px;
            }
            .stat-badge .number {
                font-size: 1.5rem;
            }
            .stat-badge .label {
                font-size: 0.8rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 500;
            color: var(--text-dark);
            font-size: 1rem;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary-mid);
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--text-light);
            font-size: 1rem;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--accent-gold);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            background: rgba(245, 247, 250, 0.4);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(212, 175, 55, 0.08), transparent 60%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-cta-gold {
            background: var(--accent-gold);
            color: var(--text-dark) !important;
            padding: 14px 40px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-cta-gold:hover {
            background: var(--accent-gold-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(212, 175, 55, 0.4);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta-gold {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            color: rgba(255, 255, 255, 0.9);
            padding: 56px 0 0;
        }
        .footer .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff !important;
            margin-bottom: 14px;
        }
        .footer .brand i {
            color: var(--accent-gold);
            font-size: 1.6rem;
        }
        .footer .desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.75);
            max-width: 380px;
            margin-bottom: 20px;
        }
        .footer .social {
            display: flex;
            gap: 14px;
        }
        .footer .social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer .social a:hover {
            background: var(--accent-gold);
            color: var(--text-dark);
            transform: translateY(-2px);
        }

        .footer .links h6 {
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer .links h6::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }
        .footer .links ul li {
            padding: 5px 0;
        }
        .footer .links ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
        }
        .footer .links ul li a:hover {
            color: var(--accent-gold);
            padding-left: 4px;
        }
        .footer .links ul li a i {
            width: 20px;
            color: var(--accent-gold);
        }

        .footer .divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.12);
            margin: 32px 0 20px;
        }
        .footer .copyright {
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.6);
            padding-bottom: 24px;
        }
        .footer .copyright a {
            color: rgba(255, 255, 255, 0.7);
        }
        .footer .copyright a:hover {
            color: var(--accent-gold);
        }
        .footer .copyright span {
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 768px) {
            .footer {
                padding: 40px 0 0;
            }
            .footer .brand {
                font-size: 1.2rem;
            }
            .footer .desc {
                max-width: 100%;
            }
            .footer .links h6 {
                margin-top: 12px;
            }
        }

        /* ===== 通用辅助 ===== */
        .bg-white {
            background: #fff;
        }
        .bg-light-custom {
            background: var(--bg-light);
        }
        .text-center {
            text-align: center;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .mb-48 {
            margin-bottom: 48px;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: var(--bg-light);
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb-wrap .breadcrumb {
            margin-bottom: 0;
            font-size: 0.85rem;
            background: transparent;
            padding: 0;
        }
        .breadcrumb-wrap .breadcrumb-item a {
            color: var(--text-muted);
        }
        .breadcrumb-wrap .breadcrumb-item a:hover {
            color: var(--primary-mid);
        }
        .breadcrumb-wrap .breadcrumb-item.active {
            color: var(--text-dark);
            font-weight: 500;
        }
        .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-light);
        }

        /* ===== 锚点偏移 ===== */
        .anchor-offset {
            scroll-margin-top: 110px;
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary-dark: #1E3A4A;
            --primary-mid: #2A5A4E;
            --accent-gold: #D4AF37;
            --bg-light: #F5F7FA;
            --white: #FFFFFF;
            --text-dark: #1E3A4A;
            --text-body: #333333;
            --text-muted: #666666;
            --text-light: #999999;
            --border-color: #E5E9EF;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.6;
            color: var(--text-body);
            background-color: var(--bg-light);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-gold);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        input:focus-visible,
        textarea:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
        }
        ul,
        ol {
            padding-left: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            line-height: 1.3;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        /* ===== 导航 ===== */
        header {
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-sm);
        }
        .navbar-top {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-mid) 100%);
            height: 56px;
            display: flex;
            align-items: center;
        }
        .navbar-top .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--white);
            letter-spacing: 0.5px;
            text-decoration: none;
        }
        .navbar-brand-custom i {
            color: var(--accent-gold);
            font-size: 1.4rem;
        }
        .navbar-brand-custom:hover {
            color: var(--white);
            opacity: 0.92;
        }
        .nav-top-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.18);
            border-radius: 20px;
            padding: 0 4px 0 16px;
            height: 36px;
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .nav-search:focus-within {
            background: rgba(255, 255, 255, 0.30);
            box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.3);
        }
        .nav-search input {
            background: transparent;
            border: none;
            color: var(--white);
            font-size: 0.875rem;
            width: 160px;
            padding: 4px 0;
        }
        .nav-search input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }
        .nav-search button {
            background: transparent;
            border: none;
            color: rgba(255, 255, 255, 0.8);
            padding: 6px 12px;
            border-radius: 0 20px 20px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-search button:hover {
            color: var(--accent-gold);
        }
        .btn-nav-cta {
            background: var(--accent-gold);
            color: var(--primary-dark);
            padding: 6px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.875rem;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-nav-cta:hover {
            background: #c5a030;
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(212, 175, 55, 0.3);
        }

        /* 第二行 Tabs */
        .navbar-tabs {
            background: var(--white);
            height: 44px;
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }
        .navbar-tabs .container {
            display: flex;
            align-items: center;
            height: 100%;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            gap: 4px;
            padding-top: 4px;
            padding-bottom: 4px;
        }
        .navbar-tabs .container::-webkit-scrollbar {
            display: none;
        }
        .nav-tab-link {
            display: inline-flex;
            align-items: center;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.875rem;
            font-weight: 500;
            color: #555;
            background: transparent;
            text-decoration: none;
            white-space: nowrap;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .nav-tab-link:hover {
            background: rgba(212, 175, 55, 0.15);
            color: var(--primary-dark);
        }
        .nav-tab-link.active {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            color: var(--white);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(30, 58, 74, 0.2);
        }

        /* ===== 移动端导航适配 ===== */
        @media (max-width: 768px) {
            .navbar-top {
                height: auto;
                min-height: 56px;
                padding: 8px 0;
            }
            .navbar-top .container {
                flex-wrap: wrap;
                gap: 8px;
            }
            .navbar-brand-custom {
                font-size: 1.25rem;
            }
            .nav-search input {
                width: 100px;
            }
            .btn-nav-cta {
                padding: 4px 14px;
                font-size: 0.8rem;
            }
            .navbar-tabs {
                height: auto;
                min-height: 40px;
            }
            .navbar-tabs .container {
                gap: 2px;
                padding-left: 12px;
                padding-right: 12px;
            }
            .nav-tab-link {
                padding: 5px 14px;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 576px) {
            .navbar-brand-custom {
                font-size: 1.1rem;
            }
            .nav-search input {
                width: 80px;
                font-size: 0.8rem;
            }
            .nav-search {
                padding: 0 2px 0 10px;
                height: 32px;
            }
            .nav-search button {
                padding: 4px 8px;
            }
            .btn-nav-cta {
                font-size: 0.75rem;
                padding: 4px 10px;
            }
            .nav-tab-link {
                padding: 4px 10px;
                font-size: 0.75rem;
            }
        }

        /* ===== Hero 内页 ===== */
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-mid) 100%);
            min-height: 280px;
            display: flex;
            align-items: center;
            padding: 60px 0;
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 16px;
            letter-spacing: 1px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .page-hero h1 i {
            color: var(--accent-gold);
            margin-right: 8px;
        }
        .page-hero .subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .page-hero .hero-meta {
            display: flex;
            justify-content: center;
            gap: 32px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
        }
        .page-hero .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .page-hero .hero-meta i {
            color: var(--accent-gold);
        }

        @media (max-width: 768px) {
            .page-hero {
                min-height: 200px;
                padding: 40px 0;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero .subtitle {
                font-size: 1rem;
            }
            .page-hero .hero-meta {
                gap: 16px;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 576px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero .subtitle {
                font-size: 0.9rem;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--white);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .section-title h2 i {
            color: var(--accent-gold);
            margin-right: 8px;
        }
        .section-title p {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1rem;
        }
        .section-title .title-line {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-gold), var(--primary-mid));
            margin: 12px auto 0;
            border-radius: 4px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .section-title h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: var(--white);
            border-bottom: 1px solid var(--border-color);
            padding: 10px 0;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb-wrap .container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-wrap a {
            color: var(--text-muted);
        }
        .breadcrumb-wrap a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb-wrap .sep {
            color: #ccc;
        }
        .breadcrumb-wrap .current {
            color: var(--primary-dark);
            font-weight: 600;
        }

        /* ===== 案例介绍区 ===== */
        .case-intro {
            background: var(--white);
        }
        .case-intro .intro-text {
            max-width: 860px;
            margin: 0 auto;
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text-body);
            text-align: center;
        }
        .case-intro .intro-text p {
            margin-bottom: 16px;
        }

        /* ===== 优势卡片 ===== */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .advantage-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            text-align: center;
        }
        .advantage-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-gold);
        }
        .advantage-card .icon {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.6rem;
            color: var(--white);
        }
        .advantage-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .advantage-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        @media (max-width: 992px) {
            .advantage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .advantage-grid {
                grid-template-columns: 1fr;
            }
            .advantage-card {
                padding: 24px 16px;
            }
        }

        /* ===== 案例展示（图文交替） ===== */
        .case-showcase {
            background: var(--bg-light);
        }
        .case-item {
            display: flex;
            gap: 40px;
            align-items: center;
            margin-bottom: 60px;
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 32px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .case-item:last-child {
            margin-bottom: 0;
        }
        .case-item:hover {
            box-shadow: var(--shadow-md);
        }
        .case-item.reverse {
            flex-direction: row-reverse;
        }
        .case-item .case-image {
            flex: 0 0 320px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--bg-light);
        }
        .case-item .case-image img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            transition: var(--transition);
        }
        .case-item:hover .case-image img {
            transform: scale(1.03);
        }
        .case-item .case-content {
            flex: 1;
        }
        .case-item .case-tag {
            display: inline-block;
            background: rgba(212, 175, 55, 0.15);
            color: var(--accent-gold);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 2px 14px;
            border-radius: 20px;
            margin-bottom: 10px;
            border: 1px solid rgba(212, 175, 55, 0.25);
        }
        .case-item h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .case-item p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .case-item .case-meta {
            display: flex;
            gap: 20px;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .case-item .case-meta i {
            margin-right: 4px;
            color: var(--accent-gold);
        }
        .case-item .btn-case-detail {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            color: var(--white);
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 500;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .case-item .btn-case-detail:hover {
            background: var(--accent-gold);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(212, 175, 55, 0.3);
        }

        @media (max-width: 992px) {
            .case-item {
                flex-direction: column !important;
                padding: 24px;
                gap: 20px;
            }
            .case-item .case-image {
                flex: 0 0 100%;
                width: 100%;
            }
            .case-item .case-image img {
                height: 200px;
            }
        }
        @media (max-width: 576px) {
            .case-item {
                padding: 16px;
            }
            .case-item .case-image img {
                height: 160px;
            }
            .case-item h3 {
                font-size: 1.1rem;
            }
        }

        /* ===== 流程区块 ===== */
        .process-section {
            background: var(--white);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            text-align: center;
            padding: 28px 16px;
            background: var(--bg-light);
            border-radius: var(--radius-md);
            transition: var(--transition);
            position: relative;
            border: 1px solid transparent;
        }
        .process-step:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 auto 14px;
        }
        .process-step .step-icon {
            font-size: 1.8rem;
            color: var(--accent-gold);
            margin-bottom: 10px;
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .process-step::after {
            content: "→";
            position: absolute;
            right: -16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.4rem;
            color: var(--accent-gold);
            font-weight: 300;
            opacity: 0.6;
        }
        .process-step:last-child::after {
            display: none;
        }

        @media (max-width: 992px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-step::after {
                display: none;
            }
        }
        @media (max-width: 576px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
            .process-step {
                padding: 20px 12px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-light);
        }
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent-gold);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 500;
            font-size: 1rem;
            color: var(--text-dark);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            color: var(--primary-mid);
        }
        .faq-question i {
            color: var(--accent-gold);
            margin-right: 8px;
            font-size: 1.1rem;
        }
        .faq-question .arrow {
            transition: var(--transition);
            font-size: 1rem;
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .arrow {
            transform: rotate(180deg);
            color: var(--accent-gold);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }
        @media (max-width: 576px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.88rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-mid) 100%);
            padding: 64px 0;
            text-align: center;
            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: 0.06;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            max-width: 520px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-gold);
            color: var(--primary-dark);
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .cta-section .btn-cta-primary:hover {
            background: var(--white);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 175, 55, 0.35);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta-primary {
                padding: 12px 28px;
                font-size: 0.92rem;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #152a35 100%);
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 0;
        }
        .footer .brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--white);
            text-decoration: none;
            margin-bottom: 12px;
        }
        .footer .brand i {
            color: var(--accent-gold);
        }
        .footer .brand:hover {
            color: var(--white);
        }
        .footer .desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
            max-width: 400px;
            margin-bottom: 16px;
        }
        .footer .social {
            display: flex;
            gap: 12px;
        }
        .footer .social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer .social a:hover {
            background: var(--accent-gold);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .footer .links h6 {
            color: var(--white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer .links h6::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }
        .footer .links ul {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        .footer .links ul li {
            margin-bottom: 8px;
        }
        .footer .links ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer .links ul li a:hover {
            color: var(--accent-gold);
            padding-left: 4px;
        }
        .footer .links ul li a i {
            color: var(--accent-gold);
            font-size: 0.8rem;
        }
        .footer .divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
            margin: 32px 0 20px;
        }
        .footer .copyright {
            text-align: center;
            padding-bottom: 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer .copyright a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
        }
        .footer .copyright a:hover {
            color: var(--accent-gold);
        }

        @media (max-width: 768px) {
            .footer {
                padding: 40px 0 0;
            }
            .footer .brand {
                font-size: 1.2rem;
            }
            .footer .desc {
                font-size: 0.85rem;
            }
            .footer .links h6 {
                margin-bottom: 12px;
            }
            .footer .links ul li a {
                font-size: 0.85rem;
            }
        }

        /* ===== 结构化数据隐藏 ===== */
        .structured-data {
            display: none;
        }

        /* ===== 返回顶部 ===== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            color: var(--white);
            border: none;
            border-radius: 50%;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--accent-gold);
            color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.3);
        }