/* roulang page: index */
:root {
      --bg-dark-deep: #070b19;
      --bg-dark-card: rgba(15, 23, 42, 0.72);
      --bg-dark-card-hover: rgba(22, 33, 62, 0.85);
      --cyan-primary: #00f0ff;
      --cyan-glow: rgba(0, 240, 255, 0.45);
      --blue-accent: #2b6cb0;
      --purple-accent: #7928ca;
      --pink-alert: #ff007a;
      --green-status: #00e676;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --text-sub: #64748b;
      --border-glass: rgba(255, 255, 255, 0.08);
      --border-bright: rgba(0, 240, 255, 0.25);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

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

    body {
      background-color: var(--bg-dark-deep);
      background-image: 
        radial-gradient(circle at 15% 20%, rgba(0, 240, 255, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 70%, rgba(121, 40, 202, 0.12) 0%, transparent 45%),
        radial-gradient(circle at 50% 50%, rgba(11, 25, 54, 0.7) 0%, var(--bg-dark-deep) 100%);
      background-attachment: fixed;
      color: var(--text-main);
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.3s ease;
    }

    /* 顶部滚动促销条 */
    .top-promo-bar {
      height: 38px;
      background: linear-gradient(90deg, rgba(121, 40, 202, 0.4), rgba(0, 240, 255, 0.25));
      border-bottom: 1px solid rgba(0, 240, 255, 0.2);
      font-size: 13px;
      display: flex;
      align-items: center;
      position: relative;
      z-index: 1050;
    }
    .top-promo-bar .badge-live {
      background: var(--pink-alert);
      color: #fff;
      font-size: 11px;
      padding: 2px 7px;
      border-radius: 4px;
      margin-right: 10px;
      display: inline-flex;
      align-items: center;
    }
    .top-promo-bar .badge-live::before {
      content: "";
      width: 6px;
      height: 6px;
      background: #fff;
      border-radius: 50%;
      margin-right: 5px;
      animation: pulse 1.2s infinite;
    }

    @keyframes pulse {
      0% { opacity: 0.3; }
      50% { opacity: 1; }
      100% { opacity: 0.3; }
    }

    /* 主导航 */
    .main-navbar {
      background: rgba(7, 11, 25, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-glass);
      position: sticky;
      top: 0;
      z-index: 1040;
      padding: 14px 0;
    }
    .brand-logo {
      font-size: 22px;
      font-weight: 800;
      letter-spacing: 0.5px;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-logo-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--cyan-primary), var(--blue-accent));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      color: #050b17;
      box-shadow: 0 0 15px var(--cyan-glow);
    }
    .nav-link {
      color: var(--text-muted) !important;
      font-size: 15px;
      font-weight: 500;
      padding: 8px 14px !important;
      border-radius: 6px;
      transition: all 0.25s ease;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--cyan-primary) !important;
      background: rgba(0, 240, 255, 0.06);
    }

    /* 发光按钮体系 */
    .btn-glow-primary {
      background: linear-gradient(135deg, var(--cyan-primary), #0072ff);
      color: #030a16 !important;
      font-weight: 700;
      border: none;
      border-radius: 50px;
      padding: 10px 24px;
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
    }
    .btn-glow-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 28px rgba(0, 240, 255, 0.7);
      color: #000 !important;
    }
    .btn-outline-glow {
      background: rgba(255, 255, 255, 0.03);
      color: var(--cyan-primary) !important;
      border: 1px solid var(--border-bright);
      border-radius: 50px;
      padding: 9px 22px;
      font-weight: 600;
      backdrop-filter: blur(8px);
      transition: all 0.3s ease;
    }
    .btn-outline-glow:hover {
      background: rgba(0, 240, 255, 0.12);
      border-color: var(--cyan-primary);
      box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
      transform: translateY(-2px);
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: var(--bg-dark-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-glass);
      border-top: 1px solid var(--border-bright);
      border-radius: var(--radius-md);
      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
      padding: 24px;
      transition: all 0.35s ease;
      height: 100%;
      position: relative;
    }
    .glass-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 240, 255, 0.4);
      box-shadow: 0 12px 36px rgba(0, 240, 255, 0.15);
    }

    /* 板块结构 */
    .page-section {
      padding: 72px 0;
      position: relative;
    }
    .section-alt {
      background: rgba(11, 20, 42, 0.5);
      border-top: 1px solid rgba(255, 255, 255, 0.03);
      border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    }
    .section-header {
      margin-bottom: 42px;
    }
    .section-tag {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--cyan-primary);
      margin-bottom: 8px;
      display: inline-block;
      padding: 4px 12px;
      border-radius: 30px;
      background: rgba(0, 240, 255, 0.08);
      border: 1px solid rgba(0, 240, 255, 0.2);
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: #fff;
      line-height: 1.3;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 760px;
      margin: 12px auto 0 auto;
    }

    /* 裂变首屏 Hero */
    .hero-wrap {
      padding: 60px 0 80px;
      position: relative;
    }
    .hero-h1 {
      font-size: 44px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      background: linear-gradient(135deg, #ffffff 40%, var(--cyan-primary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .fission-box {
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid var(--border-bright);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 0 0 35px rgba(0, 240, 255, 0.15);
      position: relative;
      overflow: hidden;
    }
    .fission-box::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--cyan-primary), var(--purple-accent), var(--pink-alert));
    }
    .progress-track {
      background: rgba(255, 255, 255, 0.08);
      height: 12px;
      border-radius: 8px;
      overflow: hidden;
      margin: 16px 0 8px;
    }
    .progress-fill {
      background: linear-gradient(90deg, var(--cyan-primary), #0072ff);
      height: 100%;
      width: 78%;
      box-shadow: 0 0 12px var(--cyan-glow);
    }

    /* 秒杀轨道组件 */
    .flash-sale-badge {
      background: linear-gradient(135deg, #ff007a, #7928ca);
      color: #fff;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 6px;
      font-size: 12px;
      display: inline-block;
    }
    .stock-indicator {
      font-size: 13px;
      color: #ff9800;
      font-weight: 600;
    }

    /* 时间轴光轨 */
    .milestone-timeline {
      position: relative;
      padding-left: 28px;
      border-left: 2px dashed rgba(0, 240, 255, 0.3);
    }
    .timeline-item {
      position: relative;
      margin-bottom: 32px;
    }
    .timeline-item:last-child {
      margin-bottom: 0;
    }
    .timeline-dot {
      position: absolute;
      left: -35px;
      top: 4px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: var(--cyan-primary);
      box-shadow: 0 0 10px var(--cyan-primary);
    }

    /* 对比表格 */
    .compare-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-glass);
    }
    .compare-table th {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-main);
      font-weight: 700;
    }
    .compare-col-highlight {
      background: rgba(0, 240, 255, 0.04);
      border-left: 1px solid rgba(0, 240, 255, 0.2);
      border-right: 1px solid rgba(0, 240, 255, 0.2);
      color: var(--cyan-primary);
      font-weight: 700;
    }

    /* FAQ 手风琴重构 */
    .accordion-item {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md) !important;
      margin-bottom: 12px;
      overflow: hidden;
    }
    .accordion-button {
      background: transparent;
      color: var(--text-main);
      font-weight: 700;
      font-size: 16px;
      box-shadow: none !important;
      padding: 18px 24px;
    }
    .accordion-button:not(.collapsed) {
      background: rgba(0, 240, 255, 0.05);
      color: var(--cyan-primary);
    }
    .accordion-button::after {
      filter: invert(1);
    }
    .accordion-body {
      color: var(--text-muted);
      font-size: 15px;
      padding: 16px 24px 24px;
      line-height: 1.7;
    }

    /* 权威页脚 */
    .site-footer {
      background: #040710;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 60px 0 30px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-title {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 8px;
    }
    .footer-title::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--cyan-primary);
    }
    .footer-link-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-link-list li {
      margin-bottom: 10px;
    }
    .footer-link-list a:hover {
      color: var(--cyan-primary);
      padding-left: 4px;
    }

    /* 表单组件 */
    .form-dark-input {
      background: rgba(15, 23, 42, 0.8);
      border: 1px solid var(--border-glass);
      color: #fff;
      padding: 12px 16px;
      border-radius: 8px;
      font-size: 14px;
      width: 100%;
      margin-bottom: 16px;
      transition: all 0.2s ease;
    }
    .form-dark-input:focus {
      outline: none;
      border-color: var(--cyan-primary);
      box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
      background: rgba(20, 30, 55, 0.9);
      color: #fff;
    }

    /* 响应式调整 */
    @media (max-width: 991px) {
      .hero-h1 { font-size: 32px; }
      .section-title { font-size: 26px; }
      .page-section { padding: 50px 0; }
    }