/* roulang page: index */
:root {
      --primary-navy: #0F2C59;
      --primary-navy-dark: #0A1E3F;
      --accent-blue: #0066FF;
      --accent-blue-hover: #0052CC;
      --accent-cyan: #00D2B4;
      --bg-white: #FFFFFF;
      --bg-light-1: #F8FAFC;
      --bg-light-2: #F1F5F9;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --border-focus: #94A3B8;
      --shadow-sm: 0 4px 20px -2px rgba(15, 44, 89, 0.06);
      --shadow-hover: 0 16px 32px -4px rgba(15, 44, 89, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-capsule: 50px;
      --transition-base: all 0.28s ease;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-white);
      color: var(--text-body);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: var(--accent-blue);
      text-decoration: none;
      transition: var(--transition-base);
    }
    a:hover, a:focus {
      color: var(--accent-blue-hover);
      text-decoration: none;
    }

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

    /* 悬浮胶囊导航系统 */
    .capsule-header-wrapper {
      position: fixed;
      top: 18px;
      left: 0;
      right: 0;
      z-index: 999;
      display: flex;
      justify-content: center;
      padding: 0 16px;
      pointer-events: none;
    }
    .capsule-nav {
      pointer-events: auto;
      max-width: 1140px;
      width: 100%;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: var(--radius-capsule);
      padding: 10px 24px;
      box-shadow: 0 10px 30px rgba(15, 44, 89, 0.08);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .capsule-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.25rem;
      color: var(--primary-navy);
    }
    .capsule-brand-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.15rem;
    }
    .capsule-menu {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 24px;
    }
    .capsule-menu li a {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-body);
      padding: 6px 4px;
      position: relative;
    }
    .capsule-menu li a:hover,
    .capsule-menu li a.active {
      color: var(--accent-blue);
    }
    .btn-nav-download {
      background: var(--accent-blue);
      color: #ffffff !important;
      padding: 8px 20px;
      border-radius: var(--radius-capsule);
      font-size: 0.88rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 4px 14px rgba(0, 102, 255, 0.28);
    }
    .btn-nav-download:hover {
      background: var(--accent-blue-hover);
      box-shadow: 0 6px 18px rgba(0, 102, 255, 0.4);
      transform: translateY(-1px);
    }

    /* 布局与通用卡片规范 */
    .section-wrap {
      padding: 92px 0;
      position: relative;
    }
    .bg-white-pure {
      background-color: var(--bg-white);
    }
    .bg-light-alt {
      background-color: var(--bg-light-1);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .bg-navy-dark {
      background-color: var(--primary-navy);
      color: #ffffff;
    }
    .section-header {
      text-align: center;
      margin-bottom: 56px;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      background: rgba(0, 102, 255, 0.08);
      color: var(--accent-blue);
      border-radius: var(--radius-capsule);
      font-size: 0.82rem;
      font-weight: 600;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }
    .section-tag.light-mode {
      background: rgba(255, 255, 255, 0.12);
      color: var(--accent-cyan);
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .section-title.light-text {
      color: #ffffff;
    }
    .section-desc {
      font-size: 1.02rem;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto;
      line-height: 1.7;
    }
    .section-desc.light-text {
      color: #94A3B8;
    }

    .ui-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: var(--transition-base);
      height: 100%;
      padding: 32px 28px;
      display: flex;
      flex-direction: column;
    }
    .ui-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: #CBD5E1;
    }

    /* 首屏 Hero 架构 */
    .hero-section {
      padding-top: 130px;
      padding-bottom: 84px;
      background: radial-gradient(circle at 80% 20%, rgba(0, 210, 180, 0.08) 0%, rgba(0, 102, 255, 0.04) 40%, #ffffff 80%);
      position: relative;
      overflow: hidden;
    }
    .hero-quiz-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      box-shadow: 0 20px 40px -10px rgba(15, 44, 89, 0.12);
      position: relative;
    }
    .quiz-badge {
      display: inline-block;
      padding: 4px 10px;
      background: #EFF6FF;
      color: var(--accent-blue);
      border-radius: 6px;
      font-size: 0.78rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .quiz-options-group {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin: 18px 0;
    }
    .quiz-option-item {
      border: 1.5px solid var(--border-color);
      border-radius: 10px;
      padding: 12px 14px;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-body);
      transition: var(--transition-base);
    }
    .quiz-option-item:hover, .quiz-option-item.selected {
      border-color: var(--accent-blue);
      background-color: #F0F7FF;
      color: var(--accent-blue);
    }
    .quiz-result-preview {
      background: var(--bg-light-1);
      border-radius: var(--radius-sm);
      padding: 16px;
      margin-top: 20px;
      border-left: 4px solid var(--accent-cyan);
    }
    .quiz-result-title {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary-navy);
      display: flex;
      justify-content: space-between;
      margin-bottom: 4px;
    }
    .quiz-result-text {
      font-size: 0.82rem;
      color: var(--text-muted);
      margin: 0;
    }

    /* 按钮规范 */
    .btn-main-action {
      background: var(--accent-blue);
      color: #ffffff !important;
      padding: 14px 34px;
      border-radius: var(--radius-capsule);
      font-weight: 700;
      font-size: 1rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      box-shadow: 0 8px 24px rgba(0, 102, 255, 0.32);
      transition: var(--transition-base);
    }
    .btn-main-action:hover {
      background: var(--accent-blue-hover);
      box-shadow: 0 12px 28px rgba(0, 102, 255, 0.45);
      transform: translateY(-2px);
    }
    .btn-outline-action {
      border: 1.5px solid var(--border-color);
      color: var(--text-body) !important;
      padding: 14px 30px;
      border-radius: var(--radius-capsule);
      font-weight: 600;
      font-size: 1rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: #FFFFFF;
      transition: var(--transition-base);
    }
    .btn-outline-action:hover {
      border-color: var(--accent-blue);
      color: var(--accent-blue) !important;
      background: #F8FAFC;
    }

    /* 秒杀倒计时条 */
    .flash-event-bar {
      background: linear-gradient(90deg, #0F2C59, #1E3A8A);
      color: #ffffff;
      border-radius: var(--radius-md);
      padding: 18px 28px;
      margin-top: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      box-shadow: 0 10px 24px rgba(15, 44, 89, 0.16);
    }
    .timer-units {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .timer-digit {
      background: rgba(255, 255, 255, 0.15);
      padding: 4px 10px;
      border-radius: 6px;
      font-weight: 800;
      font-size: 1.1rem;
      color: var(--accent-cyan);
    }

    /* 分类入口与推荐专区 */
    .category-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      transition: var(--transition-base);
    }
    .category-card:hover {
      border-color: var(--accent-blue);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .category-icon {
      width: 58px;
      height: 58px;
      border-radius: 14px;
      margin: 0 auto 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      background: #F1F5F9;
      color: var(--accent-blue);
      transition: var(--transition-base);
    }
    .category-card:hover .category-icon {
      background: var(--accent-blue);
      color: #ffffff;
    }

    /* 数据与指标统计条 */
    .metric-box {
      text-align: center;
      padding: 24px 16px;
    }
    .metric-val {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--primary-navy);
      line-height: 1.1;
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }
    .metric-box.light-text .metric-val {
      color: var(--accent-cyan);
    }
    .metric-label {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 对比表格 */
    .comparison-table-wrap {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .custom-table {
      width: 100%;
      margin: 0;
      border-collapse: collapse;
      text-align: left;
    }
    .custom-table th, .custom-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.92rem;
    }
    .custom-table th {
      background: #F8FAFC;
      color: var(--primary-navy);
      font-weight: 700;
    }
    .custom-table tr:last-child td {
      border-bottom: none;
    }
    .custom-table .col-highlight {
      background: #F0F7FF;
      color: var(--accent-blue);
      font-weight: 700;
    }

    /* 手风琴 Accordion 样式覆盖 */
    .accordion-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
    }
    .accordion-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary-navy);
      padding: 18px 24px;
      border-bottom: 1px solid transparent;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .accordion-title:hover {
      background-color: #F8FAFC;
      color: var(--accent-blue);
    }
    .accordion-content {
      padding: 20px 24px;
      border-top: 1px solid var(--border-color);
      background-color: #FAFAFA;
      color: var(--text-body);
      font-size: 0.92rem;
      line-height: 1.7;
    }

    /* 底部固定转化条 */
    .fixed-floating-cta {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 990;
      width: 90%;
      max-width: 960px;
      background: rgba(15, 44, 89, 0.96);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-radius: var(--radius-capsule);
      padding: 12px 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 12px 36px rgba(15, 44, 89, 0.28);
      border: 1px solid rgba(255, 255, 255, 0.15);
      transition: var(--transition-base);
    }
    .fixed-floating-cta .cta-info {
      display: flex;
      align-items: center;
      gap: 14px;
      color: #FFFFFF;
    }
    .fixed-floating-cta .cta-icon {
      font-size: 1.4rem;
      color: var(--accent-cyan);
    }
    .fixed-floating-cta .cta-title {
      font-weight: 700;
      font-size: 0.95rem;
    }
    .fixed-floating-cta .cta-subtitle {
      font-size: 0.8rem;
      color: #94A3B8;
    }

    /* 页脚 */
    .site-footer {
      background-color: var(--primary-navy-dark);
      color: #94A3B8;
      padding: 72px 0 32px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }
    .footer-heading {
      color: #FFFFFF;
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 20px;
    }
    .footer-links-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links-list li {
      margin-bottom: 12px;
    }
    .footer-links-list a {
      color: #94A3B8;
    }
    .footer-links-list a:hover {
      color: var(--accent-cyan);
    }
    .footer-bottom {
      margin-top: 56px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      text-align: center;
      font-size: 0.82rem;
    }

    /* 移动端与自适应调整 */
    @media (max-width: 1024px) {
      .capsule-menu {
        display: none;
      }
      .section-wrap {
        padding: 64px 0;
      }
      .hero-section {
        padding-top: 100px;
      }
    }
    @media (max-width: 640px) {
      .section-wrap {
        padding: 48px 0;
      }
      .section-title {
        font-size: 1.65rem;
      }
      .quiz-options-group {
        grid-template-columns: 1fr;
      }
      .fixed-floating-cta {
        padding: 10px 16px;
      }
      .fixed-floating-cta .cta-subtitle {
        display: none;
      }
      .btn-main-action, .btn-outline-action {
        width: 100%;
      }
    }