/* roulang page: index */
:root {
      --bg-main: #f8f9fa;
      --bg-card: #ffffff;
      --bg-dark: #0b0f19;
      --color-primary: #111827;
      --color-accent: #0d9488;
      --color-accent-dark: #134e4a;
      --color-gold: #d97706;
      --color-gold-light: #fef3c7;
      --color-gold-border: #f59e0b;
      --text-main: #1f2937;
      --text-muted: #4b5563;
      --text-light: #9ca3af;
      --border-color: #e5e7eb;
      --border-dark: #1f293d;
      --shadow-sm: 0 2px 8px rgba(17, 24, 39, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(17, 24, 39, 0.06);
      --shadow-lg: 0 12px 32px -4px rgba(17, 24, 39, 0.1);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; background-color: var(--bg-main); color: var(--text-main); line-height: 1.7; }
    body { overflow-x: hidden; }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    button, input, select, textarea { font-family: inherit; font-size: 16px; }
    img { max-width: 100%; height: auto; display: block; }

    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
    
    /* 顶部提示条 */
    .top-bar { background-color: #050811; color: #9ca3af; font-size: 13px; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
    .top-bar-inner { display: flex; justify-content: space-between; align-items: center; }
    .top-tag { display: inline-flex; align-items: center; gap: 6px; background: rgba(13,148,136,0.2); color: #2dd4bf; padding: 2px 10px; border-radius: 20px; font-weight: 500; }

    /* 主导航 */
    .main-nav-wrapper { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-color); }
    .main-nav { display: flex; justify-content: space-between; align-items: center; height: 76px; }
    .nav-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 22px; color: var(--color-primary); letter-spacing: -0.5px; }
    .nav-brand-icon { width: 34px; height: 34px; background: linear-gradient(135deg, #111827 0%, #0d9488 100%); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; }
    .nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
    .nav-links a { font-size: 15px; font-weight: 500; color: #374151; padding: 6px 0; position: relative; }
    .nav-links a:hover { color: var(--color-accent); }
    .nav-cta-btn { background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%); color: #fff !important; padding: 10px 22px; border-radius: 8px; font-weight: 600; font-size: 14px; box-shadow: 0 4px 12px rgba(13,148,136,0.25); display: inline-block; }
    .nav-cta-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(13,148,136,0.35); }
    .nav-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--color-primary); }

    /* 板块共有样式 */
    .section-spacing { padding: 96px 0; }
    .section-spacing-alt { padding: 96px 0; background-color: #ffffff; }
    .section-dark { padding: 100px 0; background-color: var(--bg-dark); color: #ffffff; }
    .section-header { text-align: center; max-width: 800px; margin: 0 auto 60px; }
    .section-header.text-left { text-align: left; margin: 0 0 50px 0; max-width: 900px; }
    .badge-sub { display: inline-block; font-size: 13px; font-weight: 700; color: var(--color-accent); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px; }
    .section-title { font-size: 32px; font-weight: 800; color: var(--color-primary); line-height: 1.35; margin-bottom: 18px; }
    .section-dark .section-title { color: #ffffff; }
    .section-desc { font-size: 16px; color: var(--text-muted); line-height: 1.8; }
    .section-dark .section-desc { color: #94a3b8; }

    /* 蓝图：Hero 会员俱乐部黑金感 */
    .hero-club-bg { background: radial-gradient(circle at 80% 20%, #1f2937 0%, #080d1a 100%); position: relative; overflow: hidden; padding: 90px 0 110px; color: #fff; border-bottom: 1px solid rgba(217, 119, 6, 0.2); }
    .hero-club-bg::before { content: ""; position: absolute; inset: 0; background: url('/assets/images/381b0089bcf391c4.jpg') center/cover no-repeat; opacity: 0.12; mix-blend-mode: overlay; }
    .hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 50px; align-items: center; }
    .hero-club-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(217, 119, 6, 0.15); border: 1px solid var(--color-gold-border); padding: 6px 14px; border-radius: 30px; font-size: 13px; font-weight: 700; color: #fbbf24; margin-bottom: 24px; }
    .hero-title { font-size: 44px; font-weight: 900; line-height: 1.25; letter-spacing: -0.5px; margin-bottom: 24px; color: #f9fafb; }
    .hero-title span { color: #f59e0b; }
    .hero-text { font-size: 16px; color: #d1d5db; line-height: 1.85; margin-bottom: 34px; max-width: 620px; }
    .hero-actions { display: flex; gap: 16px; align-items: center; }
    .btn-gold { background: linear-gradient(135deg, #d97706 0%, #b45309 100%); color: #fff; font-weight: 700; padding: 14px 32px; border-radius: 8px; box-shadow: 0 4px 18px rgba(217, 119, 6, 0.35); display: inline-block; border: none; cursor: pointer; }
    .btn-gold:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(217, 119, 6, 0.5); }
    .btn-outline-light { border: 1px solid rgba(255,255,255,0.25); color: #e5e7eb; padding: 13px 28px; border-radius: 8px; font-weight: 600; display: inline-block; }
    .btn-outline-light:hover { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.45); }
    .hero-card-membership { background: linear-gradient(145deg, #131b2e 0%, #0d1220 100%); border: 1px solid rgba(245, 158, 11, 0.3); border-radius: var(--radius-lg); padding: 36px; box-shadow: 0 20px 40px rgba(0,0,0,0.4); position: relative; }
    .member-tier-head { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid rgba(255,255,255,0.08); padding-bottom: 20px; margin-bottom: 24px; }
    .tier-name { font-size: 20px; font-weight: 800; color: #fbbf24; }
    .tier-badge { background: #b45309; color: #fff; font-size: 11px; padding: 4px 10px; border-radius: 12px; font-weight: 700; }
    .member-privileges { list-style: none; margin-bottom: 28px; }
    .member-privileges li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: #cbd5e1; margin-bottom: 12px; }
    .member-privileges li::before { content: "✓"; color: #f59e0b; font-weight: 900; }
    .member-foot { display: flex; justify-content: space-between; align-items: center; background: rgba(0,0,0,0.25); padding: 14px 18px; border-radius: 10px; font-size: 13px; color: #94a3b8; }

    /* 蓝图：全球覆盖与网络基准 */
    .global-stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .global-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 32px 24px; text-align: center; box-shadow: var(--shadow-sm); transition: transform 0.3s ease; }
    .global-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .global-num { font-size: 38px; font-weight: 900; color: var(--color-accent); line-height: 1.1; margin-bottom: 8px; }
    .global-label { font-size: 15px; font-weight: 700; color: var(--color-primary); margin-bottom: 6px; }
    .global-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

    /* 蓝图：场景卡 */
    .scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .scenario-card { background: var(--bg-card); border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); transition: all 0.3s; display: flex; flex-direction: column; }
    .scenario-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
    .scenario-img-box { height: 210px; overflow: hidden; position: relative; }
    .scenario-img-box img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
    .scenario-card:hover .scenario-img-box img { transform: scale(1.05); }
    .scenario-badge { position: absolute; bottom: 12px; left: 12px; background: rgba(17,24,39,0.85); backdrop-filter: blur(4px); color: #fff; font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 4px; }
    .scenario-content { padding: 26px; flex-grow: 1; display: flex; flex-direction: column; }
    .scenario-title { font-size: 19px; font-weight: 800; margin-bottom: 12px; color: var(--color-primary); }
    .scenario-text { font-size: 14px; color: var(--text-muted); line-height: 1.75; margin-bottom: 20px; flex-grow: 1; }
    .scenario-tag-list { display: flex; gap: 8px; flex-wrap: wrap; }
    .scenario-tag { font-size: 12px; color: var(--color-accent-dark); background: rgba(13,148,136,0.1); padding: 3px 10px; border-radius: 4px; font-weight: 600; }

    /* 蓝图：本地化能力矩阵 */
    .local-capability-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
    .local-cap-item { display: flex; gap: 20px; background: #ffffff; padding: 28px; border-radius: var(--radius-md); border: 1px solid var(--border-color); }
    .local-cap-icon { flex-shrink: 0; width: 48px; height: 48px; border-radius: 10px; background: rgba(13,148,136,0.12); color: var(--color-accent); display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 900; }
    .local-cap-body h3 { font-size: 18px; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }
    .local-cap-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

    /* 痛点洞察板块（非对称左右分栏） */
    .pain-split { display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px; align-items: center; }
    .pain-card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .pain-card { background: #ffffff; border: 1px solid #fee2e2; border-left: 4px solid #ef4444; border-radius: var(--radius-sm); padding: 22px; box-shadow: var(--shadow-sm); }
    .pain-card h4 { font-size: 16px; font-weight: 700; color: #991b1b; margin-bottom: 8px; }
    .pain-card p { font-size: 13px; color: #4b5563; line-height: 1.65; }

    /* 科学训练四步方法流 */
    .steps-timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
    .step-item { background: #ffffff; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 28px 22px; position: relative; box-shadow: var(--shadow-sm); }
    .step-order { font-size: 28px; font-weight: 900; color: var(--color-accent); line-height: 1; margin-bottom: 14px; opacity: 0.85; }
    .step-title { font-size: 17px; font-weight: 700; color: var(--color-primary); margin-bottom: 10px; }
    .step-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

    /* 核心优势 6卡片网格 */
    .adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .adv-card { background: #ffffff; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 30px; box-shadow: var(--shadow-sm); transition: all 0.3s; }
    .adv-card:hover { border-color: var(--color-accent); transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .adv-title { font-size: 18px; font-weight: 700; color: var(--color-primary); margin-bottom: 10px; }
    .adv-text { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

    /* 蓝图：优惠券墙 */
    .coupon-wall-section { background: #f1f5f9; padding: 80px 0; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
    .coupon-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 36px; }
    .coupon-ticket { background: #ffffff; border-radius: 12px; display: flex; border: 1px dashed #cbd5e1; position: relative; overflow: hidden; box-shadow: var(--shadow-sm); }
    .coupon-ticket::before, .coupon-ticket::after { content: ""; position: absolute; width: 16px; height: 16px; background: #f1f5f9; border-radius: 50%; top: 50%; transform: translateY(-50%); }
    .coupon-ticket::before { left: -8px; }
    .coupon-ticket::after { right: -8px; }
    .coupon-left { width: 38%; background: linear-gradient(135deg, #0d9488 0%, #115e59 100%); color: #fff; padding: 24px 16px; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }
    .coupon-amount { font-size: 32px; font-weight: 900; line-height: 1; }
    .coupon-unit { font-size: 13px; font-weight: 600; margin-top: 4px; }
    .coupon-right { width: 62%; padding: 20px 24px; display: flex; flex-direction: column; justify-content: space-between; }
    .coupon-name { font-size: 16px; font-weight: 700; color: var(--color-primary); margin-bottom: 6px; }
    .coupon-terms { font-size: 12px; color: var(--text-muted); line-height: 1.5; margin-bottom: 12px; }
    .coupon-action-btn { align-self: flex-start; background: #0f172a; color: #fff; font-size: 12px; font-weight: 600; padding: 6px 14px; border-radius: 4px; border: none; cursor: pointer; }
    .coupon-action-btn:hover { background: var(--color-accent); }
    .coupon-rules-box { background: #ffffff; border-radius: 8px; padding: 20px 28px; font-size: 13px; color: var(--text-muted); border: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }

    /* 热门训练课程专项 */
    .program-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; align-items: center; }
    .program-card { background: #ffffff; border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 36px 30px; box-shadow: var(--shadow-sm); position: relative; transition: all 0.3s; }
    .program-card.featured { border-color: var(--color-accent); box-shadow: 0 10px 30px rgba(13,148,136,0.15); transform: scale(1.04); z-index: 2; }
    .program-card.featured .program-badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--color-accent); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 16px; border-radius: 20px; }
    .program-level { font-size: 14px; font-weight: 700; color: var(--color-accent); text-transform: uppercase; margin-bottom: 12px; }
    .program-name { font-size: 22px; font-weight: 800; color: var(--color-primary); margin-bottom: 12px; }
    .program-desc { font-size: 14px; color: var(--text-muted); line-height: 1.75; margin-bottom: 24px; }
    .program-specs { list-style: none; border-top: 1px solid var(--border-color); padding-top: 20px; margin-bottom: 28px; }
    .program-specs li { font-size: 13px; color: var(--text-main); margin-bottom: 10px; display: flex; justify-content: space-between; }
    .program-specs li span:last-child { font-weight: 600; color: var(--color-primary); }
    .btn-program { display: block; text-align: center; width: 100%; padding: 12px; border-radius: 8px; font-weight: 700; font-size: 14px; background: #f3f4f6; color: var(--color-primary); border: 1px solid var(--border-color); }
    .program-card.featured .btn-program { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }

    /* 客户案例蜕变实录 */
    .case-container { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
    .case-card { background: #ffffff; border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
    .case-card-img { height: 220px; overflow: hidden; }
    .case-card-img img { width: 100%; height: 100%; object-fit: cover; }
    .case-body { padding: 30px; }
    .case-tag { font-size: 12px; font-weight: 700; color: #b45309; background: #fef3c7; padding: 3px 10px; border-radius: 4px; display: inline-block; margin-bottom: 12px; }
    .case-title { font-size: 20px; font-weight: 800; margin-bottom: 12px; color: var(--color-primary); }
    .case-text { font-size: 14px; color: var(--text-muted); line-height: 1.75; margin-bottom: 20px; }
    .case-metric-box { background: #f8fafc; border-radius: 8px; padding: 14px 18px; display: flex; justify-content: space-around; border: 1px solid #edf2f7; }
    .metric-item { text-align: center; }
    .metric-val { font-size: 18px; font-weight: 800; color: var(--color-accent); }
    .metric-sub { font-size: 12px; color: var(--text-muted); }

    /* 资讯精选板块 */
    .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .news-card { background: #ffffff; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 26px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; }
    .news-meta { display: flex; justify-content: space-between; font-size: 13px; color: var(--text-light); margin-bottom: 14px; }
    .news-title { font-size: 18px; font-weight: 700; line-height: 1.45; color: var(--color-primary); margin-bottom: 12px; }
    .news-excerpt { font-size: 14px; color: var(--text-muted); line-height: 1.7; flex-grow: 1; margin-bottom: 20px; }
    .news-link { font-size: 14px; font-weight: 700; color: var(--color-accent); display: inline-flex; align-items: center; gap: 4px; }

    /* 常见问题手风琴 FAQ */
    .faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
    .faq-item { background: #ffffff; border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; transition: border-color 0.2s; }
    .faq-question { width: 100%; text-align: left; padding: 20px 24px; background: none; border: none; font-size: 16px; font-weight: 700; color: var(--color-primary); display: flex; justify-content: space-between; align-items: center; cursor: pointer; }
    .faq-question::after { content: "+"; font-size: 22px; font-weight: 400; color: var(--color-accent); transition: transform 0.25s ease; }
    .faq-item.active .faq-question::after { content: "−"; transform: rotate(180deg); }
    .faq-answer { display: none; padding: 0 24px 22px; font-size: 14px; color: var(--text-muted); line-height: 1.8; border-top: 1px dashed #f1f5f9; padding-top: 16px; }
    .faq-item.active .faq-answer { display: block; }

    /* 蓝图收口：联系销售与能力评测预约表单 */
    .cta-conversion-box { background: linear-gradient(145deg, #111827 0%, #060911 100%); border-radius: var(--radius-lg); border: 1px solid rgba(255,255,255,0.08); padding: 56px; color: #fff; box-shadow: var(--shadow-lg); }
    .cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
    .cta-form-title { font-size: 28px; font-weight: 800; margin-bottom: 14px; line-height: 1.35; color: #ffffff; }
    .cta-form-desc { font-size: 15px; color: #94a3b8; line-height: 1.75; margin-bottom: 24px; }
    .contact-spec-row { display: flex; flex-direction: column; gap: 12px; margin-top: 24px; }
    .contact-spec-item { display: flex; align-items: center; gap: 12px; font-size: 14px; color: #cbd5e1; }
    .contact-spec-icon { width: 32px; height: 32px; border-radius: 6px; background: rgba(13,148,136,0.18); color: #2dd4bf; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold; }
    .form-wrapper { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1); border-radius: 12px; padding: 32px; }
    .form-group { margin-bottom: 18px; }
    .form-label { display: block; font-size: 13px; font-weight: 600; color: #e2e8f0; margin-bottom: 8px; }
    .form-control { width: 100%; height: 46px; background: rgba(15,23,42,0.8); border: 1px solid #334155; border-radius: 8px; padding: 0 14px; color: #fff; outline: none; transition: border-color 0.2s; }
    .form-control:focus { border-color: var(--color-accent); }
    .btn-submit { width: 100%; height: 48px; background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%); color: #fff; font-size: 16px; font-weight: 700; border: none; border-radius: 8px; cursor: pointer; transition: opacity 0.2s; margin-top: 8px; }
    .btn-submit:hover { opacity: 0.92; }

    /* 页脚 */
    .site-footer { background: #060911; border-top: 1px solid rgba(255,255,255,0.06); color: #94a3b8; padding: 72px 0 28px; font-size: 14px; }
    .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 50px; }
    .footer-col-title { font-size: 15px; font-weight: 700; color: #ffffff; margin-bottom: 18px; letter-spacing: 0.5px; }
    .footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
    .footer-links a:hover { color: #2dd4bf; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: #64748b; }
    .footer-bottom a { color: #64748b; }
    .footer-bottom a:hover { color: #94a3b8; }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-inner, .pain-split, .cta-grid { grid-template-columns: 1fr; gap: 40px; }
      .global-stats-grid, .steps-timeline, .adv-grid, .scenario-grid, .program-grid, .news-grid { grid-template-columns: 1fr 1fr; }
      .coupon-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .section-spacing, .section-spacing-alt, .section-dark { padding: 60px 0; }
      .hero-title { font-size: 32px; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .global-stats-grid, .steps-timeline, .adv-grid, .scenario-grid, .program-grid, .news-grid, .local-capability-grid, .case-container, .pain-card-grid { grid-template-columns: 1fr; }
      .nav-links { display: none; }
      .nav-toggle { display: block; }
      .nav-links.active { display: flex; flex-direction: column; position: absolute; top: 76px; left: 0; right: 0; background: #ffffff; border-bottom: 1px solid var(--border-color); padding: 24px; gap: 16px; box-shadow: var(--shadow-lg); }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
      .cta-conversion-box { padding: 32px 20px; }
      .coupon-ticket { flex-direction: column; }
      .coupon-left, .coupon-right { width: 100%; }
      .coupon-rules-box { flex-direction: column; gap: 14px; text-align: center; }
    }