/* roulang page: index */
:root {
      --primary: #0F4C5C;
      --primary-dark: #0A323D;
      --primary-light: #18687D;
      --accent: #E36414;
      --accent-hover: #C5530D;
      --gold: #D4AF37;
      --dark-card: #081C24;
      --bg-main: #F8F9FA;
      --bg-white: #FFFFFF;
      --bg-dark: #0B2545;
      --text-main: #1D2A44;
      --text-muted: #5C6A82;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 8px rgba(15, 76, 92, 0.05);
      --shadow-md: 0 8px 24px -4px rgba(15, 76, 92, 0.08);
      --shadow-lg: 0 16px 36px -6px rgba(15, 76, 92, 0.14);
      --container-max: 1240px;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif; }
    body { background-color: var(--bg-main); color: var(--text-main); line-height: 1.65; font-size: 15px; -webkit-font-smoothing: antialiased; }

    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }
    ul { list-style: none; }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }

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

    /* 顶部微信息条与主导航 */
    .top-bar { background-color: #0A1C28; color: #CBD5E1; font-size: 13px; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.08); }
    .top-bar-inner { display: flex; justify-content: space-between; align-items: center; }
    .top-contact { display: flex; gap: 24px; align-items: center; }
    .top-badge { background: rgba(212, 175, 55, 0.15); color: var(--gold); padding: 2px 8px; border-radius: var(--radius-sm); border: 1px solid rgba(212,175,55,0.3); font-size: 12px; }

    .site-header { position: sticky; top: 0; z-index: 999; background: rgba(255, 255, 255, 0.96); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-color); box-shadow: var(--shadow-sm); }
    .header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
    .brand-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--primary); }
    .logo-symbol { width: 38px; height: 38px; background: linear-gradient(135deg, var(--primary), var(--accent)); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; font-weight: 900; }
    .main-nav { display: flex; align-items: center; gap: 28px; }
    .nav-link { font-weight: 500; color: #334155; position: relative; padding: 6px 0; }
    .nav-link:hover, .nav-link.active { color: var(--primary); }
    .nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; background: var(--primary); border-radius: 2px; }

    .header-actions { display: flex; align-items: center; gap: 14px; }
    .btn-header { background: var(--primary); color: #fff; padding: 9px 20px; border-radius: var(--radius-sm); font-weight: 600; font-size: 14px; transition: background 0.2s ease; display: inline-flex; align-items: center; justify-content: center; }
    .btn-header:hover { background: var(--primary-light); }

    /* 通用板块结构 */
    .section-block { padding: 88px 0; }
    .section-title-wrap { text-align: center; max-width: 780px; margin: 0 auto 56px auto; }
    .section-eyebrow { display: inline-block; font-size: 13px; font-weight: 700; color: var(--accent); letter-spacing: 1.5px; margin-bottom: 10px; text-transform: uppercase; background: rgba(227, 100, 20, 0.08); padding: 4px 12px; border-radius: 20px; }
    .section-title { font-size: 32px; font-weight: 700; color: var(--text-main); line-height: 1.3; margin-bottom: 16px; }
    .section-desc { font-size: 15px; color: var(--text-muted); line-height: 1.7; }

    /* 1. Hero 会员俱乐部黑金感 */
    .hero-club {
      background: linear-gradient(135deg, rgba(8, 28, 36, 0.94) 0%, rgba(15, 76, 92, 0.88) 100%),
                  url('/assets/images/f4a5ee26862c9657.jpg') center/cover no-repeat;
      color: #FFFFFF;
      padding: 100px 0 110px 0;
      position: relative;
      border-bottom: 3px solid var(--gold);
    }
    .hero-grid { display: grid; grid-template-columns: 1.25fr 0.95fr; gap: 48px; align-items: center; }
    .vip-tag-row { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
    .vip-pill { display: inline-flex; align-items: center; gap: 6px; background: rgba(212, 175, 55, 0.2); border: 1px solid var(--gold); color: #F8E7A1; font-size: 13px; font-weight: 600; padding: 6px 14px; border-radius: 20px; }
    .vip-pill::before { content: "★"; font-size: 12px; color: var(--gold); }
    .hero-title { font-size: 42px; line-height: 1.25; font-weight: 800; margin-bottom: 20px; color: #FFFFFF; text-shadow: 0 2px 10px rgba(0,0,0,0.5); }
    .hero-title span { color: #E7C970; }
    .hero-lead { font-size: 16px; line-height: 1.8; color: #E2E8F0; margin-bottom: 36px; max-width: 620px; }
    .hero-btn-group { display: flex; gap: 16px; flex-wrap: wrap; }
    .btn-gold { background: linear-gradient(135deg, #D4AF37 0%, #AA820A 100%); color: #081C24; font-weight: 700; padding: 14px 32px; border-radius: var(--radius-sm); box-shadow: 0 4px 15px rgba(212, 175, 55, 0.35); }
    .btn-gold:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5); }
    .btn-outline-gold { border: 1px solid rgba(212, 175, 55, 0.7); color: #F8E7A1; padding: 14px 28px; border-radius: var(--radius-sm); font-weight: 600; background: rgba(0,0,0,0.25); }
    .btn-outline-gold:hover { background: rgba(212, 175, 55, 0.15); border-color: var(--gold); }

    .club-tier-card {
      background: linear-gradient(180deg, rgba(20, 48, 58, 0.85) 0%, rgba(10, 30, 38, 0.95) 100%);
      border: 1px solid rgba(212, 175, 55, 0.3);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
      position: relative;
    }
    .tier-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 18px; margin-bottom: 20px; }
    .tier-name { font-size: 18px; font-weight: 700; color: #F8E7A1; }
    .tier-badge { background: #D4AF37; color: #0A1C28; font-weight: 800; font-size: 12px; padding: 3px 10px; border-radius: 12px; }
    .tier-privilege { margin-bottom: 24px; }
    .tier-item { display: flex; gap: 10px; margin-bottom: 12px; font-size: 14px; color: #CBD5E1; }
    .tier-check { color: #D4AF37; font-weight: bold; }
    .tier-stats-strip { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; background: rgba(0,0,0,0.3); padding: 14px; border-radius: var(--radius-sm); border: 1px solid rgba(255,255,255,0.05); }
    .tier-stat-num { font-size: 20px; font-weight: 700; color: #FFFFFF; }
    .tier-stat-lbl { font-size: 12px; color: var(--text-light); }

    /* 2. 卖点三连 */
    .section-highlights { background: #FFFFFF; }
    .triple-points-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
    .highlight-card {
      background: #FAFCFD;
      border: 1px solid #E2E8F0;
      border-top: 4px solid var(--primary);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      transition: all 0.3s ease;
    }
    .highlight-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-top-color: var(--accent); }
    .highlight-icon { width: 52px; height: 52px; border-radius: 10px; background: rgba(15, 76, 92, 0.08); display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 20px; color: var(--primary); }
    .highlight-title { font-size: 19px; font-weight: 700; color: var(--text-main); margin-bottom: 12px; }
    .highlight-text { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

    /* 3. 入口矩阵 */
    .section-portal { background: #F1F5F9; }
    .portal-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .portal-item {
      background: #FFFFFF;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid #E2E8F0;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
    }
    .portal-item:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-3px); }
    .portal-meta { margin-bottom: 16px; }
    .portal-tag { display: inline-block; font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 4px; background: #E0F2FE; color: #0369A1; margin-bottom: 10px; }
    .portal-name { font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
    .portal-summary { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
    .portal-action { font-size: 13px; font-weight: 600; color: var(--primary); display: flex; align-items: center; gap: 4px; padding-top: 14px; border-top: 1px dashed #E2E8F0; }

    /* 4. 最新发布 */
    .section-release { background: #FFFFFF; }
    .release-box { background: linear-gradient(135deg, #F8FAFC 0%, #EDF2F7 100%); border-radius: var(--radius-lg); border: 1px solid #CBD5E1; padding: 40px; display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; align-items: center; }
    .release-badge { background: var(--accent); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 4px; display: inline-block; margin-bottom: 14px; }
    .release-heading { font-size: 24px; font-weight: 800; color: var(--text-main); margin-bottom: 16px; }
    .release-desc { font-size: 14px; color: var(--text-muted); line-height: 1.8; margin-bottom: 24px; }
    .release-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .spec-item { background: #FFFFFF; padding: 12px 16px; border-radius: var(--radius-sm); border: 1px solid #E2E8F0; font-size: 13px; font-weight: 600; color: #334155; }
    .release-img { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-md); border: 1px solid #E2E8F0; }

    /* 5. 热门专题 (深色合规与架构规范) */
    .section-topics-dark {
      background: var(--bg-dark);
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
    }
    .topics-dark-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .topic-dark-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      backdrop-filter: blur(8px);
      transition: all 0.3s ease;
    }
    .topic-dark-card:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(212, 175, 55, 0.5); transform: translateY(-4px); }
    .topic-idx { font-size: 28px; font-weight: 800; color: var(--gold); opacity: 0.6; margin-bottom: 14px; }
    .topic-heading { font-size: 18px; font-weight: 700; color: #FFFFFF; margin-bottom: 12px; }
    .topic-body { font-size: 13.5px; color: #CBD5E1; line-height: 1.7; }

    /* 6. 场景演示与解决方案 */
    .section-scenarios { background: #F8F9FA; }
    .scenario-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 36px; }
    .scenario-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid #E2E8F0;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .scenario-thumb { height: 180px; overflow: hidden; position: relative; }
    .scenario-thumb img { width: 100%; height: 100%; object-fit: cover; }
    .scenario-content { padding: 24px; }
    .scenario-tag { font-size: 12px; font-weight: 700; color: var(--primary); margin-bottom: 8px; display: block; }
    .scenario-name { font-size: 17px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; }
    .scenario-detail { font-size: 13.5px; color: var(--text-muted); line-height: 1.7; }

    /* 7. 数据指标统计 */
    .section-metrics { background: #0E2938; color: #FFFFFF; padding: 64px 0; border-top: 1px solid rgba(255,255,255,0.05); border-bottom: 1px solid rgba(255,255,255,0.05); }
    .metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
    .metric-item { padding: 16px; position: relative; }
    .metric-item:not(:last-child)::after { content: ''; position: absolute; right: 0; top: 25%; height: 50%; width: 1px; background: rgba(255,255,255,0.1); }
    .metric-val { font-size: 40px; font-weight: 800; color: var(--gold); margin-bottom: 8px; font-family: "PingFang SC", sans-serif; }
    .metric-lbl { font-size: 14px; font-weight: 600; color: #E2E8F0; margin-bottom: 4px; }
    .metric-sub { font-size: 12px; color: var(--text-light); }

    /* 8. 资讯列表 */
    .section-news { background: #FFFFFF; }
    .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .news-card { background: #F8FAFC; border: 1px solid #E2E8F0; border-radius: var(--radius-md); overflow: hidden; display: flex; flex-direction: column; }
    .news-thumb { height: 190px; overflow: hidden; }
    .news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
    .news-card:hover .news-thumb img { transform: scale(1.05); }
    .news-body { padding: 22px; flex: 1; display: flex; flex-direction: column; justify-content: space-between; }
    .news-date { font-size: 12px; color: #94A3B8; margin-bottom: 8px; }
    .news-heading { font-size: 16px; font-weight: 700; color: var(--text-main); line-height: 1.5; margin-bottom: 10px; }
    .news-brief { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
    .news-link { font-size: 13px; font-weight: 600; color: var(--primary); margin-top: auto; }

    /* 9. 口碑与合规收益 */
    .section-proof { background: #F8F9FA; }
    .proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .proof-card { background: #FFFFFF; border: 1px solid #E2E8F0; border-radius: var(--radius-md); padding: 28px; box-shadow: var(--shadow-sm); position: relative; }
    .proof-stars { color: #F59E0B; margin-bottom: 14px; font-size: 14px; }
    .proof-quote { font-size: 14px; color: #334155; line-height: 1.75; margin-bottom: 20px; }
    .proof-author { display: flex; align-items: center; gap: 12px; border-top: 1px solid #F1F5F9; padding-top: 16px; }
    .proof-avatar { width: 44px; height: 44px; border-radius: 50%; background: #E2E8F0; display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--primary); }
    .proof-name { font-size: 14px; font-weight: 700; color: var(--text-main); }
    .proof-corp { font-size: 12px; color: var(--text-muted); }

    /* 10. 套餐阶梯对比 */
    .section-pricing { background: #FFFFFF; }
    .pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; align-items: stretch; }
    .price-card { background: #FFFFFF; border: 1px solid #CBD5E1; border-radius: var(--radius-lg); padding: 36px 28px; display: flex; flex-direction: column; justify-content: space-between; position: relative; transition: all 0.3s ease; }
    .price-card.featured { border: 2px solid var(--primary); box-shadow: var(--shadow-lg); transform: scale(1.02); }
    .featured-label { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--primary); color: #fff; font-size: 12px; font-weight: 700; padding: 3px 14px; border-radius: 12px; }
    .price-name { font-size: 20px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; }
    .price-target { font-size: 13px; color: var(--text-muted); min-height: 40px; margin-bottom: 20px; }
    .price-amount { font-size: 32px; font-weight: 800; color: var(--primary); margin-bottom: 24px; border-bottom: 1px solid #E2E8F0; padding-bottom: 20px; }
    .price-amount span { font-size: 13px; font-weight: 500; color: var(--text-muted); }
    .price-features { margin-bottom: 32px; }
    .price-item { font-size: 13.5px; color: #475569; margin-bottom: 12px; display: flex; gap: 8px; }
    .btn-plan { width: 100%; text-align: center; padding: 12px; border-radius: var(--radius-sm); font-weight: 700; font-size: 14px; display: block; border: 1px solid var(--primary); color: var(--primary); }
    .price-card.featured .btn-plan { background: var(--primary); color: #fff; border-color: var(--primary); }
    .btn-plan:hover { background: var(--primary-light); color: #fff; }

    /* 11. 常见问题解答 */
    .section-faq { background: #F8FAFC; }
    .faq-container { max-width: 860px; margin: 0 auto; }
    .faq-item { background: #FFFFFF; border: 1px solid #E2E8F0; border-radius: var(--radius-sm); margin-bottom: 14px; overflow: hidden; }
    .faq-question { padding: 20px 24px; font-size: 16px; font-weight: 700; color: var(--text-main); cursor: pointer; display: flex; justify-content: space-between; align-items: center; user-select: none; }
    .faq-question:hover { color: var(--primary); }
    .faq-icon { font-size: 18px; transition: transform 0.25s ease; color: var(--primary); }
    .faq-answer { padding: 0 24px 20px 24px; font-size: 14px; color: var(--text-muted); line-height: 1.75; display: none; border-top: 1px solid #F1F5F9; padding-top: 14px; }
    .faq-item.active .faq-answer { display: block; }
    .faq-item.active .faq-icon { transform: rotate(45deg); color: var(--accent); }

    /* 12. 统一收口与联络入局 */
    .section-contact-cta {
      background: linear-gradient(135deg, #0F4C5C 0%, #082630 100%);
      color: #FFFFFF;
      padding: 80px 0;
    }
    .contact-cta-box { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
    .cta-heading { font-size: 32px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
    .cta-desc { font-size: 15px; color: #CBD5E1; line-height: 1.7; margin-bottom: 28px; }
    .cta-form { background: #FFFFFF; padding: 32px; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
    .form-title { font-size: 18px; font-weight: 700; color: var(--text-main); margin-bottom: 18px; }
    .form-group { margin-bottom: 14px; }
    .form-input { width: 100%; padding: 12px 14px; border: 1px solid #CBD5E1; border-radius: var(--radius-sm); color: #1E293B; }
    .form-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(15, 76, 92, 0.15); }
    .btn-submit { width: 100%; background: var(--accent); color: #fff; font-weight: 700; padding: 14px; border: none; border-radius: var(--radius-sm); cursor: pointer; transition: background 0.2s ease; margin-top: 8px; }
    .btn-submit:hover { background: var(--accent-hover); }

    /* 页脚 */
    .site-footer { background: #0A1620; color: #94A3B8; font-size: 13.5px; padding: 64px 0 32px 0; border-top: 1px solid rgba(255,255,255,0.08); }
    .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 48px; }
    .footer-brand-title { font-size: 18px; font-weight: 700; color: #FFFFFF; margin-bottom: 14px; }
    .footer-desc { line-height: 1.7; margin-bottom: 18px; font-size: 13px; color: #73839B; }
    .footer-col-title { font-size: 15px; font-weight: 700; color: #FFFFFF; margin-bottom: 18px; }
    .footer-links li { margin-bottom: 10px; }
    .footer-links a:hover { color: #FFFFFF; }
    .footer-contact-item { margin-bottom: 12px; line-height: 1.6; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 28px; text-align: center; font-size: 12px; color: #64748B; }

    /* 移动端与响应式适配 */
    @media (max-width: 1024px) {
      .hero-grid, .release-box, .contact-cta-box { grid-template-columns: 1fr; gap: 36px; }
      .portal-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .top-bar { display: none; }
      .main-nav { display: none; }
      .triple-points-grid, .topics-dark-grid, .scenario-tabs, .news-grid, .proof-grid, .pricing-grid { grid-template-columns: 1fr; }
      .metric-grid { grid-template-columns: 1fr 1fr; }
      .metric-item:not(:last-child)::after { display: none; }
      .hero-title { font-size: 32px; }
      .section-title { font-size: 26px; }
      .footer-grid { grid-template-columns: 1fr; }
    }