/* roulang page: index */
:root {
    --primary: #0b1a2e;
    --primary-light: #132743;
    --accent: #c8a86a;
    --accent-light: #e0c897;
    --bg: #f4f6f9;
    --white: #ffffff;
    --text: #1e293b;
    --muted: #6b7a8d;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(2, 12, 27, 0.08);
    --shadow-lg: 0 12px 40px rgba(2, 12, 27, 0.15);
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --container: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; font-size: 16px; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 90px 0; }
.section-alt { background: var(--white); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-tag { display: inline-block; background: rgba(200, 168, 106, 0.12); color: var(--accent); font-size: 13px; font-weight: 700; letter-spacing: 2px; padding: 6px 18px; border-radius: 30px; margin-bottom: 16px; }
.section-title { font-size: 36px; font-weight: 800; color: var(--primary); line-height: 1.25; }
.section-desc { font-size: 16px; color: var(--muted); margin-top: 14px; }

/* ===== Header ===== */
.site-header { background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: baseline; font-weight: 800; font-size: 22px; color: var(--primary); line-height: 1; }
.logo span { color: var(--accent); font-size: 16px; margin-left: 2px; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a { padding: 10px 18px; border-radius: 8px; font-size: 15px; font-weight: 500; color: var(--text); transition: var(--transition); }
.main-nav a:hover { background: rgba(11, 26, 46, 0.05); color: var(--primary); }
.main-nav a.active { background: var(--primary); color: var(--white); box-shadow: 0 4px 16px rgba(11, 26, 46, 0.2); }
.header-cta { display: flex; align-items: center; gap: 8px; }
.mobile-toggle { display: none; background: none; border: none; font-size: 24px; color: var(--primary); line-height: 1; }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; border-radius: 12px; font-size: 15px; font-weight: 600; border: none; transition: var(--transition); line-height: 1.4; }
.btn-primary { background: var(--primary); color: var(--white); box-shadow: 0 4px 20px rgba(11, 26, 46, 0.25); }
.btn-primary:hover { background: #132743; transform: translateY(-2px); box-shadow: 0 8px 28px rgba(11, 26, 46, 0.35); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(11, 26, 46, 0.25); }
.btn-light { background: var(--white); color: var(--primary); box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15); }
.btn-light:hover { background: var(--accent-light); color: var(--primary); transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid rgba(200, 168, 106, 0.5); outline-offset: 2px; }

/* ===== Hero ===== */
.hero { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%), url('/assets/images/backpic/back-1.png') center/cover; background-blend-mode: overlay; position: relative; padding: 110px 0; }
.hero::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(11, 26, 46, 0.85) 40%, rgba(11, 26, 46, 0.4) 100%); }
.hero .container { position: relative; z-index: 2; }
.hero-content { max-width: 620px; }
.hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(255, 255, 255, 0.12); color: var(--accent-light); font-size: 13px; font-weight: 600; padding: 8px 20px; border-radius: 30px; border: 1px solid rgba(255, 255, 255, 0.15); margin-bottom: 24px; }
.hero-tag i { font-size: 14px; }
.hero-title { font-size: 48px; font-weight: 800; color: var(--white); line-height: 1.15; letter-spacing: 1px; }
.hero-title span { color: var(--accent); }
.hero-subtitle { font-size: 17px; color: rgba(255, 255, 255, 0.85); margin-top: 18px; line-height: 1.8; max-width: 520px; }
.hero-actions { display: flex; gap: 16px; margin-top: 34px; flex-wrap: wrap; }
.hero-trust { display: flex; gap: 36px; margin-top: 50px; padding-top: 28px; border-top: 1px solid rgba(255, 255, 255, 0.15); flex-wrap: wrap; }
.trust-item .num { font-size: 26px; font-weight: 800; color: var(--accent); }
.trust-item .label { font-size: 14px; color: rgba(255, 255, 255, 0.75); }

/* ===== 核心说明 ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.about-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); position: relative; }
.about-img img { width: 100%; height: 420px; object-fit: cover; transition: transform 0.5s ease; }
.about-img:hover img { transform: scale(1.03); }
.about-content .section-title { font-size: 32px; }
.feature-list { margin-top: 28px; display: grid; gap: 16px; }
.feature-list li { list-style: none; display: flex; gap: 14px; align-items: flex-start; background: var(--white); padding: 16px 20px; border-radius: var(--radius-sm); border: 1px solid var(--border); box-shadow: var(--shadow); transition: var(--transition); }
.feature-list li:hover { transform: translateX(4px); border-color: var(--accent); }
.feature-list i { color: var(--accent); font-size: 18px; margin-top: 3px; }
.feature-list h4 { font-size: 16px; color: var(--primary); font-weight: 700; }
.feature-list p { font-size: 14px; color: var(--muted); margin-top: 4px; }

/* ===== 分类入口 ===== */
.cat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.cat-card { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: var(--white); transition: var(--transition); display: block; }
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.cat-card .cat-img { height: 220px; overflow: hidden; position: relative; }
.cat-card .cat-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.cat-card:hover .cat-img img { transform: scale(1.05); }
.cat-card .cat-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(11, 26, 46, 0.6) 100%); }
.cat-card .cat-body { padding: 28px; }
.cat-card .cat-body h3 { font-size: 20px; color: var(--primary); font-weight: 700; }
.cat-card .cat-body p { font-size: 14px; color: var(--muted); margin-top: 10px; line-height: 1.7; }
.cat-card .cat-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--accent); transition: var(--transition); }
.cat-card .cat-link:hover { gap: 10px; color: var(--primary); }

/* ===== 资讯列表 ===== */
.news-list { display: grid; gap: 20px; }
.news-item { display: flex; background: var(--white); border-radius: var(--radius); border: 1px solid var(--border); padding: 24px 28px; transition: var(--transition); align-items: center; gap: 24px; }
.news-item:hover { box-shadow: var(--shadow); border-color: var(--accent); transform: translateY(-2px); }
.news-icon { width: 52px; height: 52px; min-width: 52px; background: rgba(200, 168, 106, 0.1); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 20px; }
.news-content { flex: 1; min-width: 0; }
.news-content h3 { font-size: 17px; font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: var(--transition); }
.news-item:hover .news-content h3 { color: var(--accent); }
.news-content p { font-size: 14px; color: var(--muted); margin-top: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-meta { font-size: 13px; color: var(--muted); display: flex; gap: 12px; margin-top: 8px; align-items: center; }
.news-meta .badge { background: var(--primary); color: var(--white); padding: 3px 10px; border-radius: 4px; font-size: 12px; }
.empty-tip { text-align: center; padding: 50px 20px; color: var(--muted); font-size: 15px; background: var(--white); border-radius: var(--radius); border: 1px dashed var(--border); }

/* ===== 数据统计 ===== */
.stats-section { background: linear-gradient(135deg, var(--primary) 0%, #0d1f36 100%); padding: 80px 0; position: relative; overflow: hidden; }
.stats-section::before { content: ''; position: absolute; top: -50px; right: -50px; width: 300px; height: 300px; background: rgba(200, 168, 106, 0.08); border-radius: 50%; }
.stats-section::after { content: ''; position: absolute; bottom: -30px; left: -30px; width: 160px; height: 160px; background: rgba(200, 168, 106, 0.05); border-radius: 50%; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; position: relative; z-index: 2; }
.stat-item { text-align: center; padding: 30px 20px; border-radius: var(--radius); background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.08); transition: var(--transition); }
.stat-item:hover { background: rgba(255, 255, 255, 0.1); transform: translateY(-4px); }
.stat-number { font-size: 42px; font-weight: 800; color: var(--accent); line-height: 1.2; }
.stat-label { font-size: 14px; color: rgba(255, 255, 255, 0.75); margin-top: 8px; }

/* ===== 优势卡片 ===== */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.adv-card { background: var(--white); border-radius: var(--radius); padding: 36px 30px; border: 1px solid var(--border); box-shadow: var(--shadow); transition: var(--transition); text-align: center; }
.adv-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.adv-icon { width: 68px; height: 68px; margin: 0 auto 20px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: 20px; display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 26px; transition: var(--transition); }
.adv-card:hover .adv-icon { transform: rotate(-6deg) scale(1.05); }
.adv-card h3 { font-size: 18px; color: var(--primary); font-weight: 700; }
.adv-card p { font-size: 14px; color: var(--muted); margin-top: 12px; line-height: 1.7; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: grid; gap: 16px; }
.faq-item { background: var(--white); border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.faq-question { padding: 22px 28px; font-size: 16px; font-weight: 600; color: var(--primary); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; background: none; border: none; width: 100%; text-align: left; }
.faq-question i { color: var(--accent); font-size: 14px; transition: var(--transition); }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-answer-inner { padding: 0 28px 24px; font-size: 14px; color: var(--muted); line-height: 1.8; }

/* ===== CTA ===== */
.cta-section { background: linear-gradient(135deg, var(--primary) 0%, #0d1f36 100%); padding: 80px 0; text-align: center; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover; opacity: 0.15; mix-blend-mode: overlay; }
.cta-inner { position: relative; z-index: 2; max-width: 600px; margin: 0 auto; }
.cta-inner h2 { font-size: 36px; font-weight: 800; color: var(--white); }
.cta-inner p { font-size: 16px; color: rgba(255, 255, 255, 0.85); margin-top: 16px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; margin-top: 32px; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: #060f1c; color: rgba(255, 255, 255, 0.6); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 40px; }
.footer-brand .footer-logo { font-size: 22px; font-weight: 800; color: var(--white); }
.footer-brand .footer-logo span { color: var(--accent); }
.footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 14px; }
.footer-column h4 { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 16px; }
.footer-column a { display: block; font-size: 14px; color: rgba(255, 255, 255, 0.6); padding: 6px 0; transition: var(--transition); }
.footer-column a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 20px 0; text-align: center; font-size: 13px; color: rgba(255, 255, 255, 0.4); }

/* ===== 移动端折叠菜单 ===== */
.mobile-menu { display: none; }
@media (max-width: 1024px) {
    .main-nav { display: none; }
    .header-cta .btn { padding: 10px 20px; font-size: 14px; }
    .mobile-toggle { display: block; }
    .mobile-menu.active { display: block; position: absolute; top: 72px; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--border); box-shadow: var(--shadow); padding: 20px 24px; z-index: 99; }
    .mobile-menu.active a { display: block; padding: 14px 16px; border-radius: 8px; font-size: 16px; color: var(--text); }
    .mobile-menu.active a:hover { background: var(--bg); }
    .mobile-menu.active a.active { color: var(--accent); font-weight: 700; background: rgba(200, 168, 106, 0.1); }
    .section { padding: 70px 0; }
    .section-title { font-size: 30px; }
    .hero-title { font-size: 38px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .adv-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .cat-grid { grid-template-columns: 1fr; }
    .adv-grid { grid-template-columns: 1fr; gap: 24px; }
    .hero { padding: 80px 0; }
    .hero-title { font-size: 32px; }
    .about-img img { height: 260px; }
    .news-item { flex-direction: column; align-items: flex-start; gap: 12px; padding: 20px; }
    .news-content h3 { white-space: normal; line-height: 1.4; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .section { padding: 56px 0; }
    .section-title { font-size: 26px; }
    .hero-title { font-size: 28px; }
    .hero-subtitle { font-size: 15px; }
    .hero-actions { flex-direction: column; }
    .btn { width: 100%; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
    .stat-number { font-size: 30px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .cta-inner h2 { font-size: 28px; }
}

/* roulang page: article */
:root {
            --primary: #1e4fd8;
            --primary-dark: #163ba8;
            --primary-light: #e8edfc;
            --accent: #0f766e;
            --accent-light: #d3f0ec;
            --bg: #f6f8fc;
            --surface: #ffffff;
            --text: #111827;
            --text-weak: #6b7280;
            --border: #e5e7eb;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow: 0 4px 20px rgba(17, 24, 39, 0.06);
            --shadow-lg: 0 12px 40px rgba(17, 24, 39, 0.1);
            --transition: all 0.25s ease;
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .main-nav {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid rgba(229, 231, 235, 0.7);
            box-shadow: 0 1px 8px rgba(17, 24, 39, 0.04);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .nav-logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 6px;
            letter-spacing: -0.02em;
        }

        .nav-logo span {
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 10px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 700;
        }

        .nav-logo:hover {
            color: var(--text);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links a {
            color: var(--text-weak);
            font-weight: 500;
            font-size: 15px;
            padding: 8px 18px;
            border-radius: 30px;
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(30, 79, 216, 0.25);
        }

        .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: 30px;
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 4px 14px rgba(30, 79, 216, 0.3);
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            padding: 10px;
            flex-direction: column;
            gap: 5px;
            align-items: center;
            justify-content: center;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--primary-light);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            background: linear-gradient(135deg, #eef2ff 0%, #f6f8fc 100%);
            border-bottom: 1px solid var(--border);
            padding: 22px 0;
            font-size: 14px;
        }

        .breadcrumb-inner {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .breadcrumb-inner a {
            color: var(--text-weak);
            font-weight: 400;
        }

        .breadcrumb-inner a:hover {
            color: var(--primary);
        }

        .breadcrumb-inner .sep {
            color: #b0b8c4;
            font-size: 12px;
        }

        .breadcrumb-inner span.current {
            color: var(--text);
            font-weight: 500;
            max-width: 320px;
            overflow: hidden;
            white-space: nowrap;
            text-overflow: ellipsis;
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 48px 0 40px;
        }

        .article-card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            overflow: hidden;
            margin-bottom: 30px;
        }

        .article-header {
            padding: 40px 48px 0;
        }

        .article-category-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 30px;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .article-title {
            font-size: 34px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: var(--text-weak);
            font-size: 14px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta i {
            color: var(--primary);
            font-size: 13px;
        }

        .article-cover {
            margin: 32px 48px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
        }

        .article-cover img {
            width: 100%;
            height: auto;
            min-height: 220px;
            object-fit: cover;
        }

        .article-content {
            padding: 36px 48px 30px;
            font-size: 16px;
            line-height: 1.9;
            color: #1f2937;
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 32px 0 14px;
            color: var(--text);
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 28px 0 12px;
            color: var(--text);
        }

        .article-content p {
            margin-bottom: 18px;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 24px;
            padding-left: 8px;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 8px;
        }

        .article-content img {
            border-radius: var(--radius-sm);
            margin: 20px 0;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            color: #374151;
            font-style: italic;
        }

        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(30, 79, 216, 0.3);
        }

        .article-tags {
            padding: 0 48px 36px;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #f8fafc;
            border: 1px solid var(--border);
            color: var(--text-weak);
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 30px;
            transition: var(--transition);
        }

        .tag-item:hover {
            background: var(--primary-light);
            border-color: rgba(30, 79, 216, 0.3);
            color: var(--primary);
        }

        .tag-item i {
            font-size: 11px;
        }

        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding: 20px 48px 36px;
            border-top: 1px solid var(--border);
            margin-top: 0;
        }

        .article-nav a {
            font-size: 14px;
            color: var(--text-weak);
            max-width: 45%;
            overflow: hidden;
            white-space: nowrap;
            text-overflow: ellipsis;
        }

        .article-nav a:hover {
            color: var(--primary);
        }

        .article-nav a.next {
            text-align: right;
        }

        .not-found-box {
            background: #fff;
            border-radius: var(--radius);
            padding: 60px 40px;
            text-align: center;
            border: 1px dashed var(--border);
            box-shadow: var(--shadow);
        }

        .not-found-box i {
            font-size: 56px;
            color: #d1d5db;
            margin-bottom: 24px;
            display: block;
        }

        .not-found-box h2 {
            font-size: 28px;
            color: var(--text);
            margin-bottom: 14px;
        }

        .not-found-box p {
            color: var(--text-weak);
            margin-bottom: 28px;
            max-width: 400px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 28px;
        }

        .sidebar-card.security-card {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            border: none;
            color: #fff;
        }

        .sidebar-card.security-card .sidebar-title {
            color: #fff;
        }

        .sidebar-card.security-card .sidebar-title i {
            color: #38bdf8;
        }

        .security-feature {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .security-feature:last-child {
            border-bottom: none;
        }

        .security-feature i {
            font-size: 16px;
            color: #38bdf8;
            margin-top: 3px;
        }

        .security-feature p {
            font-size: 14px;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.85);
        }

        .security-feature strong {
            display: block;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 2px;
        }

        .sidebar-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-title i {
            color: var(--primary);
            font-size: 15px;
        }

        .sidebar-cats {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sidebar-cat-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 16px;
            background: #f8fafc;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .sidebar-cat-item:hover {
            border-color: rgba(30, 79, 216, 0.3);
            background: var(--primary-light);
            transform: translateX(3px);
        }

        .sidebar-cat-item .cat-name {
            font-weight: 500;
            color: var(--text);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-cat-item .cat-name i {
            color: var(--primary);
            font-size: 14px;
        }

        .sidebar-cat-item .cat-arrow {
            color: #b0b8c4;
            font-size: 12px;
        }

        .sidebar-card .latest-item {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .sidebar-card .latest-item:last-child {
            border-bottom: none;
        }

        .sidebar-card .latest-item:hover {
            padding-left: 6px;
        }

        .latest-item .item-date {
            font-size: 12px;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 4px;
        }

        .latest-item .item-date i {
            font-size: 11px;
        }

        .latest-item .item-title {
            font-size: 14px;
            color: var(--text);
            font-weight: 500;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .latest-item:hover .item-title {
            color: var(--primary);
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .sidebar-tags a {
            background: #f8fafc;
            border: 1px solid var(--border);
            padding: 6px 12px;
            border-radius: 30px;
            font-size: 13px;
            color: var(--text-weak);
            transition: var(--transition);
        }

        .sidebar-tags a:hover {
            background: var(--primary-light);
            border-color: rgba(30, 79, 216, 0.3);
            color: var(--primary);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            background: var(--bg);
            padding: 64px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.02em;
            margin-bottom: 10px;
        }

        .section-header p {
            color: var(--text-weak);
            font-size: 15px;
        }

        .related-card {
            display: block;
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            margin-bottom: 20px;
            height: 100%;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(30, 79, 216, 0.2);
        }

        .related-card-image {
            height: 180px;
            overflow: hidden;
            background: #e2e8f0;
            position: relative;
        }

        .related-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .related-card:hover .related-card-image img {
            transform: scale(1.05);
        }

        .related-card-body {
            padding: 22px 24px 26px;
        }

        .card-category {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 30px;
            margin-bottom: 12px;
        }

        .related-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-body .item-time {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: #9ca3af;
            margin-top: 12px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1e4fd8 0%, #0f766e 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            position: relative;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            max-width: 520px;
            margin: 0 auto 32px;
            position: relative;
        }

        .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }

        .btn-primary {
            display: inline-block;
            background: #fff;
            color: var(--primary) !important;
            font-weight: 600;
            font-size: 15px;
            padding: 14px 32px;
            border-radius: 30px;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
        }

        .btn-outline {
            display: inline-block;
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 30px;
            border-radius: 30px;
            transition: var(--transition);
        }

        .btn-outline:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 64px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-logo span {
            color: #60a5fa;
            background: rgba(96, 165, 250, 0.1);
            padding: 2px 10px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
        }

        .footer-brand p {
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-column h4 {
            font-size: 15px;
            font-weight: 600;
            color: #e2e8f0;
            margin-bottom: 20px;
        }

        .footer-column a {
            display: block;
            color: #64748b;
            margin-bottom: 10px;
            transition: var(--transition);
        }

        .footer-column a:hover {
            color: #60a5fa;
        }

        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: #475569;
        }

        /* ===== 移动端 ===== */
        @media (max-width: 1024px) {
            .article-header {
                padding: 30px 32px 0;
            }

            .article-cover {
                margin: 26px 32px 0;
            }

            .article-content {
                padding: 30px 32px 24px;
            }

            .article-tags {
                padding: 0 32px 28px;
            }

            .article-nav {
                padding: 18px 32px 28px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                gap: 6px;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                width: 100%;
                text-align: center;
            }

            .article-title {
                font-size: 26px;
            }

            .article-header {
                padding: 24px 20px 0;
            }

            .article-cover {
                margin: 20px 20px 0;
            }

            .article-content {
                padding: 24px 20px 20px;
                font-size: 15px;
            }

            .article-tags {
                padding: 0 20px 24px;
            }

            .article-nav {
                padding: 16px 20px 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .cta-section h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .nav-logo {
                font-size: 20px;
            }

            .breadcrumb-bar {
                padding: 16px 0;
            }

            .article-title {
                font-size: 22px;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

            .sidebar-card {
                padding: 20px;
            }

            .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0f1e3d;
            --primary-light: #1b3054;
            --primary-dark: #080f21;
            --accent: #c9a05e;
            --accent-hover: #b89050;
            --accent-soft: #f5efe3;
            --bg: #f6f7fb;
            --bg-white: #ffffff;
            --bg-dark: #0a1528;
            --text: #1d2733;
            --text-light: #6b7a8d;
            --border: #e4e9f0;
            --radius: 16px;
            --radius-sm: 8px;
            --shadow: 0 4px 24px rgba(15, 30, 61, 0.06);
            --shadow-lg: 0 12px 44px rgba(15, 30, 61, 0.10);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-w: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 30, 61, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 20px;
        }

        .site-logo {
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 1px;
            color: #fff;
            white-space: nowrap;
            display: flex;
            align-items: baseline;
            gap: 2px;
        }

        .site-logo span {
            color: var(--accent);
            font-weight: 600;
            font-size: 18px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .main-nav a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 999px;
            transition: var(--transition);
            position: relative;
        }

        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .main-nav a.active {
            color: #fff;
            background: var(--accent);
            box-shadow: 0 4px 18px rgba(201, 160, 94, 0.35);
        }

        .mobile-toggle {
            display: none;
            color: #fff;
            font-size: 24px;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 130px 0 110px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 21, 40, 0.94) 10%, rgba(15, 30, 61, 0.82) 50%, rgba(10, 21, 40, 0.65) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 22px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }

        .hero-breadcrumb a:hover {
            color: var(--accent);
        }

        .breadcrumb-sep {
            opacity: 0.5;
        }

        .hero-breadcrumb .current {
            color: var(--accent);
        }

        .hero-content h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 36px;
            max-width: 620px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 30px;
            border-radius: 999px;
            transition: var(--transition);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
            border: 2px solid transparent;
            line-height: 1.4;
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.10);
        }

        .btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(201, 160, 94, 0.4);
            outline-offset: 2px;
        }

        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }

        .btn-accent:hover {
            background: var(--accent-hover);
            color: var(--primary-dark);
        }

        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
        }

        .btn-light:hover {
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary);
        }

        /* ===== Section ===== */
        .section {
            padding: 90px 0;
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent-hover);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 999px;
            letter-spacing: 1px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ===== Overview Cards ===== */
        .overview-section {
            background: var(--bg-white);
        }

        .overview-grid .cell {
            padding: 10px;
        }

        .guide-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
            height: 100%;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(201, 160, 94, 0.4);
        }

        .card-icon {
            width: 70px;
            height: 70px;
            border-radius: 20px;
            background: linear-gradient(135deg, var(--accent-soft), #fff);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--accent);
            margin: 0 auto 22px;
            border: 1px solid rgba(201, 160, 94, 0.2);
        }

        .guide-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .guide-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.75;
        }

        /* ===== Steps ===== */
        .steps-section {
            background: var(--bg);
        }

        .steps-list {
            max-width: 840px;
            margin: 0 auto;
        }

        .step-item {
            display: flex;
            gap: 28px;
            padding: 36px 0;
            border-bottom: 1px solid var(--border);
            position: relative;
        }

        .step-item:last-child {
            border-bottom: none;
        }

        .step-number {
            flex-shrink: 0;
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: var(--primary);
            color: var(--accent);
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 20px rgba(15, 30, 61, 0.18);
            letter-spacing: 1px;
        }

        .step-content {
            padding-top: 4px;
        }

        .step-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .step-content p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ===== Detail ===== */
        .detail-section {
            background: var(--bg-white);
        }

        .detail-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            margin-bottom: 70px;
        }

        .detail-row:last-child {
            margin-bottom: 0;
        }

        .detail-image img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .detail-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .detail-content p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .detail-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }

        .detail-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text);
            line-height: 1.6;
        }

        .detail-list i {
            color: var(--accent);
            font-size: 16px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.active {
            border-color: rgba(201, 160, 94, 0.5);
            box-shadow: 0 4px 20px rgba(15, 30, 61, 0.06);
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            text-align: left;
            cursor: pointer;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--accent-hover);
        }

        .faq-question i {
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 320px;
            padding-bottom: 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 100px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary) 60%, var(--primary-light));
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(201, 160, 94, 0.12) 0%, transparent 70%);
        }

        .cta-box {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 70px 0 0;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-logo span {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 340px;
        }

        .footer-column h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .footer-column a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            padding: 5px 0;
            transition: var(--transition);
        }

        .footer-column a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }

        .footer-bottom p {
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .hero-content h1 {
                font-size: 36px;
            }

            .section {
                padding: 70px 0;
            }

            .section-header {
                margin-bottom: 44px;
            }

            .detail-row {
                gap: 36px;
            }

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

        @media (max-width: 768px) {
            .site-header {
                padding: 0;
            }

            .header-inner {
                min-height: 64px;
                flex-wrap: wrap;
            }

            .site-logo {
                font-size: 19px;
            }

            .site-logo span {
                font-size: 16px;
            }

            .mobile-toggle {
                display: flex;
            }

            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 0 18px;
                gap: 8px;
                border-top: 1px solid rgba(255, 255, 255, 0.06);
            }

            .main-nav.active {
                display: flex;
            }

            .main-nav a {
                padding: 12px 20px;
                font-size: 15px;
                border-radius: 10px;
            }

            .page-hero {
                padding: 90px 0 70px;
            }

            .hero-content h1 {
                font-size: 30px;
            }

            .hero-subtitle {
                font-size: 15px;
            }

            .hero-actions .btn {
                padding: 10px 22px;
                font-size: 14px;
            }

            .section {
                padding: 56px 0;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .guide-card {
                padding: 26px 20px;
            }

            .step-item {
                gap: 18px;
                padding: 28px 0;
            }

            .step-number {
                width: 48px;
                height: 48px;
                font-size: 18px;
                border-radius: 14px;
            }

            .step-content h3 {
                font-size: 18px;
            }

            .detail-row {
                grid-template-columns: 1fr;
                gap: 28px;
                margin-bottom: 48px;
            }

            .detail-row.reverse {
                grid-template-columns: 1fr;
            }

            .detail-row.reverse .detail-image {
                order: 1;
            }

            .detail-row.reverse .detail-content {
                order: 2;
            }

            .detail-image img {
                aspect-ratio: 16/10;
            }

            .fqa-question {
                padding: 18px 20px;
            }

            .cta-section {
                padding: 70px 0;
            }

            .cta-box h2 {
                font-size: 26px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .site-logo {
                font-size: 17px;
            }

            .hero-content h1 {
                font-size: 26px;
            }

            .hero-subtitle {
                font-size: 14px;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .section-header h2 {
                font-size: 22px;
            }

            .section-desc {
                font-size: 14px;
            }

            .step-item {
                flex-direction: column;
                gap: 14px;
            }

            .step-number {
                width: 44px;
                height: 44px;
                font-size: 16px;
            }

            .detail-content h3 {
                font-size: 20px;
            }

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

            .cta-actions {
                flex-direction: column;
            }

            .cta-actions .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #0f4c81;
  --primary-light: #1a6bb8;
  --primary-dark: #0a3558;
  --accent: #00b894;
  --accent-light: #6ee7c8;
  --bg: #f4f7fb;
  --surface: #ffffff;
  --dark: #0b1b2b;
  --dark-2: #102a3f;
  --text: #17293b;
  --text-muted: #5e7183;
  --border: #dfe7ef;
  --radius: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(11,27,43,0.06);
  --shadow-md: 0 8px 32px rgba(11,27,43,0.10);
  --shadow-lg: 0 18px 52px rgba(11,27,43,0.14);
  --transition: all .3s cubic-bezier(.22,.61,.36,1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; vertical-align: middle; border: 0; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; line-height: inherit; color: inherit; }
button { cursor: pointer; border: none; background: none; }
:focus-visible { outline: 3px solid rgba(26,107,184,.45); outline-offset: 2px; border-radius: 4px; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 28px; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}
.brand-logo {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--primary-dark);
  line-height: 1.2;
  white-space: nowrap;
}
.brand-logo span { color: var(--accent); }
.brand-logo small {
  display: block;
  font-size: .72rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  margin-top: 2px;
}
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: .94rem;
  font-weight: 600;
  color: var(--text-muted);
  border: 1px solid transparent;
  transition: var(--transition);
}
.main-nav a:hover { color: var(--primary); background: rgba(15,76,129,.06); border-color: rgba(15,76,129,.12); }
.main-nav a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  box-shadow: 0 4px 16px rgba(15,76,129,.28);
  border-color: transparent;
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--primary);
  font-size: 1.25rem;
  justify-content: center;
  align-items: center;
  transition: var(--transition);
}
.nav-toggle:hover { background: var(--bg); border-color: var(--primary-light); }
.nav-toggle:focus-visible { outline: 3px solid rgba(26,107,184,.4); }

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding: 110px 0 100px;
  background: linear-gradient(135deg, rgba(11,27,43,.92) 0%, rgba(15,76,129,.82) 55%, rgba(26,107,184,.65) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.page-banner::after {
  content: '';
  position: absolute;
  bottom: -80px;
  right: -60px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,184,148,.25) 0%, transparent 70%);
  pointer-events: none;
}
.page-banner .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .86rem;
  color: rgba(255,255,255,.72);
  margin-bottom: 26px;
  flex-wrap: wrap;
}
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb i { font-size: .72rem; opacity: .7; }
.banner-title {
  font-size: clamp(2.2rem, 4.6vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.banner-title span { color: var(--accent); }
.banner-text {
  font-size: 1.12rem;
  line-height: 1.8;
  color: rgba(255,255,255,.88);
  max-width: 720px;
  margin-bottom: 36px;
}
.banner-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 34px;
  border-radius: 999px;
  font-size: .98rem;
  font-weight: 700;
  letter-spacing: .5px;
  border: 2px solid transparent;
  transition: var(--transition);
  line-height: 1.4;
}
.btn i { font-size: .9rem; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  box-shadow: 0 8px 24px rgba(15,76,129,.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(15,76,129,.45); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 14px rgba(15,76,129,.3); }
.btn-accent {
  background: linear-gradient(135deg, #009b7e 0%, var(--accent) 100%);
  color: #fff;
  box-shadow: 0 8px 24px rgba(0,184,148,.32);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(0,184,148,.42); }
.btn-accent:active { transform: translateY(0); }
.btn-ghost-light {
  background: transparent;
  border-color: rgba(255,255,255,.55);
  color: #fff;
}
.btn-ghost-light:hover { background: rgba(255,255,255,.14); border-color: #fff; }
.btn-outline {
  background: var(--surface);
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-lg { padding: 16px 42px; font-size: 1.04rem; }

/* ===== Sections ===== */
.section { padding: 90px 0; }
.section-bg { background: var(--surface); }
.section-muted { background: var(--bg); }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(15,76,129,.08);
  color: var(--primary);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 8px 20px;
  border-radius: 999px;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.section-label i { font-size: .78rem; }
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: .3px;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.8;
}
.section-head { text-align: center; margin-bottom: 58px; }
.section-head .section-desc { margin-left: auto; margin-right: auto; }
.section-head-left { text-align: left; }
.section-head-left .section-desc { margin-left: 0; }

/* ===== Overview ===== */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.overview-media {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.overview-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}
.overview-media img.media-mt { margin-top: 34px; }
.overview-media img:hover { transform: translateY(-6px); box-shadow: 0 22px 60px rgba(11,27,43,.18); }
.media-float {
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
  border: 1px solid rgba(223,231,239,.6);
}
.media-float i { color: var(--accent); font-size: 1.2rem; }
.media-float span { font-weight: 700; color: var(--text); font-size: .94rem; }
.overview-content .section-title { margin-bottom: 18px; }
.overview-content .lead {
  font-size: 1.06rem;
  line-height: 1.85;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.overview-list { margin-top: 12px; }
.overview-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
  font-size: .98rem;
  color: var(--text);
}
.overview-list li:last-child { border-bottom: none; }
.overview-list i {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(0,184,148,.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .82rem;
  margin-top: 3px;
}
.overview-cta { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }

/* ===== Capability Cards ===== */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.capability-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.capability-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.capability-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); border-color: rgba(15,76,129,.18); }
.capability-card:hover::before { opacity: 1; }
.capability-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  box-shadow: 0 6px 18px rgba(15,76,129,.24);
  transition: var(--transition);
}
.capability-card:nth-child(even) .capability-icon { background: linear-gradient(135deg, #009b7e 0%, var(--accent) 100%); box-shadow: 0 6px 18px rgba(0,184,148,.24); }
.capability-card:hover .capability-icon { transform: scale(1.08) rotate(-4deg); }
.capability-card h3 { font-size: 1.14rem; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.capability-card p { font-size: .92rem; color: var(--text-muted); line-height: 1.75; }

/* ===== Dark Stats Band ===== */
.stats-band {
  position: relative;
  padding: 90px 0;
  background: linear-gradient(135deg, rgba(8,20,32,.94) 0%, rgba(13,45,71,.92) 60%, rgba(15,76,129,.85) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
}
.stats-band .section-label { background: rgba(255,255,255,.12); color: var(--accent-light); }
.stats-band .section-title { color: #fff; }
.stats-band .section-desc { color: rgba(255,255,255,.78); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 50px;
}
.stat-item {
  background: rgba(255,255,255,.09);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-lg);
  padding: 38px 26px;
  text-align: center;
  backdrop-filter: blur(6px);
  transition: var(--transition);
}
.stat-item:hover { background: rgba(255,255,255,.16); transform: translateY(-4px); }
.stat-num {
  font-size: 2.9rem;
  font-weight: 800;
  line-height: 1.1;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 10px;
}
.stat-num span { color: var(--accent); }
.stat-label { font-size: .94rem; color: rgba(255,255,255,.75); letter-spacing: 1px; }

/* ===== Process ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  margin-top: 20px;
}
.process-grid::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  opacity: .25;
  z-index: 0;
}
.process-step {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 8px;
}
.step-number {
  width: 72px;
  height: 72px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: var(--surface);
  border: 3px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  box-shadow: 0 8px 24px rgba(15,76,129,.18);
  transition: var(--transition);
}
.process-step:hover .step-number { background: var(--primary); color: #fff; transform: scale(1.06); }
.process-step h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.process-step p { font-size: .9rem; color: var(--text-muted); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-accordion {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  overflow: hidden;
}
.faq-accordion .accordion-item {
  border-bottom: 1px solid var(--border);
  background: transparent;
}
.faq-accordion .accordion-item:last-child { border-bottom: none; }
.faq-accordion .accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 30px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  background: transparent;
  position: relative;
  transition: var(--transition);
}
.faq-accordion .accordion-title::before {
  content: '\f059';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 1rem;
  color: var(--primary);
  margin-right: 16px;
  flex-shrink: 0;
}
.faq-accordion .accordion-title::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: .86rem;
  color: var(--text-muted);
  transition: var(--transition);
  margin-left: auto;
  border: none;
  background: none;
  transform: none;
  position: static;
}
.faq-accordion .accordion-item:hover .accordion-title { background: rgba(15,76,129,.03); }
.faq-accordion .accordion-item.is-active .accordion-title { color: var(--primary); }
.faq-accordion .accordion-item.is-active .accordion-title::after { content: '\f077'; color: var(--primary); }
.faq-accordion .accordion-content {
  padding: 0 30px 24px 62px;
  font-size: .96rem;
  color: var(--text-muted);
  line-height: 1.85;
  background: transparent;
}

/* ===== CTA Band ===== */
.cta-band {
  padding: 80px 0;
  background: linear-gradient(120deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  border-radius: var(--radius-lg);
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,184,148,.3) 0%, transparent 70%);
}
.cta-band::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -60px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.12) 0%, transparent 70%);
}
.cta-band h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; margin-bottom: 16px; position: relative; z-index: 1; }
.cta-band p { font-size: 1.06rem; color: rgba(255,255,255,.85); max-width: 580px; margin: 0 auto 34px; position: relative; z-index: 1; }
.cta-band .btn { position: relative; z-index: 1; }
.cta-band .btn-primary { background: var(--accent); box-shadow: 0 8px 26px rgba(0,184,148,.4); }
.cta-band .btn-primary:hover { background: var(--accent-light); color: var(--primary-dark); }

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,.7);
  padding: 70px 0 0;
  margin-top: 90px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 46px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-logo { font-size: 1.35rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.footer-logo span { color: var(--accent); }
.footer-brand p { font-size: .92rem; line-height: 1.8; color: rgba(255,255,255,.6); max-width: 340px; }
.footer-column h4 {
  font-size: .92rem;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-column h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.footer-column a {
  display: block;
  font-size: .92rem;
  color: rgba(255,255,255,.6);
  padding: 7px 0;
  transition: var(--transition);
}
.footer-column a:hover { color: var(--accent); padding-left: 5px; }
.footer-bottom {
  padding: 26px 0;
  text-align: center;
  font-size: .85rem;
  color: rgba(255,255,255,.4);
  border-top: 1px solid rgba(255,255,255,.06);
}
.footer-bottom p { margin: 0; }
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section { padding: 74px 0; }
  .overview-grid { gap: 40px; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .process-grid::before { display: none; }
}
@media (max-width: 768px) {
  .header-inner { min-height: 64px; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 20px;
    gap: 6px;
    box-shadow: 0 16px 40px rgba(11,27,43,.14);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    visibility: hidden;
    opacity: 0;
    transition: var(--transition);
    z-index: 999;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  }
  .main-nav.open { transform: translateY(0); visibility: visible; opacity: 1; }
  .main-nav a { text-align: center; padding: 14px 20px; font-size: 1rem; }
  .page-banner { padding: 80px 0 68px; }
  .banner-text { font-size: 1rem; }
  .btn { width: 100%; max-width: 320px; }
  .overview-grid { grid-template-columns: 1fr; }
  .overview-media { margin-bottom: 10px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .cta-band { padding: 56px 24px; }
}
@media (max-width: 520px) {
  .container { padding: 0 20px; }
  .section { padding: 58px 0; }
  .capability-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .stat-num { font-size: 2.2rem; }
  .overview-media { grid-template-columns: 1fr; }
  .overview-media img.media-mt { margin-top: 0; }
  .overview-media img { height: 220px; }
  .media-float { position: static; transform: none; margin-top: 8px; justify-content: center; }
  .faq-accordion .accordion-title { padding: 20px 20px; font-size: .95rem; flex-wrap: wrap; }
  .faq-accordion .accordion-content { padding: 0 20px 20px; font-size: .9rem; }
  .banner-buttons .btn { width: 100%; }
  .footer-logo { font-size: 1.2rem; }
}