/* roulang page: index */
:root {
      --deep-blue: #0A0E27;
      --panel-bg: rgba(15, 23, 50, 0.75);
      --electric-purple: #7C3AED;
      --electric-purple-dark: #5B21B6;
      --sports-cyan: #00F0FF;
      --success-green: #00E676;
      --text-primary: #E2E8F0;
      --text-muted: rgba(224, 224, 255, 0.7);
      --border-glow: rgba(124, 58, 237, 0.25);
      --border-light: rgba(255, 255, 255, 0.15);
      --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(124, 58, 237, 0.15);
      --card-hover-shadow: 0 12px 40px rgba(124, 58, 237, 0.35);
      --blur-amount: 18px;
      --radius-card: 16px;
      --radius-btn: 50px;
      --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
    }
    * {
      box-sizing: border-box;
    }
    body {
      background-color: var(--deep-blue);
      color: var(--text-primary);
      font-family: var(--font-sans);
      line-height: 1.75;
      margin: 0;
      overflow-x: hidden;
      background-image: 
        linear-gradient(rgba(124, 58, 237, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(124, 58, 237, 0.03) 1px, transparent 1px);
      background-size: 40px 40px;
    }
    h1, h2, h3, h4, .h1, .h2, .h3 {
      font-weight: 700;
      letter-spacing: -0.02em;
    }
    a {
      color: var(--sports-cyan);
      text-decoration: none;
      transition: color 0.2s;
    }
    a:hover {
      color: #7C3AED;
    }
    /* 玻璃拟态卡片基础 */
    .glass-panel {
      background: var(--panel-bg);
      backdrop-filter: blur(var(--blur-amount));
      -webkit-backdrop-filter: blur(var(--blur-amount));
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-card);
      box-shadow: var(--card-shadow);
    }
    .glass-panel-interactive {
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .glass-panel-interactive:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-hover-shadow);
    }
    /* 导航栏 */
    .navbar-custom {
      background: rgba(10, 14, 39, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid transparent;
      background-image: linear-gradient(rgba(10,14,39,0.85), rgba(10,14,39,0.85)), 
                        linear-gradient(90deg, #7C3AED, #00F0FF, transparent);
      background-origin: border-box;
      background-clip: padding-box, border-box;
      padding: 0.75rem 0;
      position: sticky;
      top: 0;
      z-index: 1020;
    }
    .logo-text {
      font-weight: 700;
      font-size: 1.5rem;
      background: linear-gradient(135deg, #fff, #00F0FF);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: -0.5px;
    }
    .search-box {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 50px;
      padding: 0.6rem 1.2rem 0.6rem 3rem;
      color: white;
      width: 100%;
      transition: 0.2s;
    }
    .search-box::placeholder {
      color: rgba(255, 255, 255, 0.5);
      font-weight: 400;
    }
    .search-box:focus {
      outline: none;
      border-color: var(--sports-cyan);
      box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
    }
    .search-icon {
      position: absolute;
      left: 1.2rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--sports-cyan);
      font-size: 1.2rem;
      pointer-events: none;
    }
    .nav-link-custom {
      color: rgba(255,255,255,0.8) !important;
      font-weight: 500;
      margin: 0 0.5rem;
      transition: 0.2s;
    }
    .nav-link-custom:hover {
      color: var(--sports-cyan) !important;
    }
    /* 按钮 */
    .btn-primary-glow {
      background: linear-gradient(135deg, var(--electric-purple), var(--electric-purple-dark));
      border: none;
      color: white;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 0.75rem 2rem;
      box-shadow: 0 0 20px rgba(124, 58, 237, 0.6);
      transition: 0.25s;
      letter-spacing: 0.3px;
    }
    .btn-primary-glow:hover {
      box-shadow: 0 0 28px rgba(124, 58, 237, 0.9);
      filter: brightness(1.1);
      color: white;
    }
    .btn-outline-cyan {
      border: 1.5px solid var(--sports-cyan);
      color: var(--sports-cyan);
      background: transparent;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 0.75rem 2rem;
      transition: 0.25s;
    }
    .btn-outline-cyan:hover {
      background: rgba(0, 240, 255, 0.1);
      color: var(--sports-cyan);
    }
    /* 区块标题 */
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 1rem;
      color: white;
    }
    @media (min-width: 768px) {
      .section-title {
        font-size: 2.25rem;
      }
    }
    .data-number {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--sports-cyan);
      line-height: 1.2;
    }
    .trend-up {
      color: var(--success-green);
      font-weight: 600;
    }
    /* 服务图标 */
    .icon-circle {
      width: 48px;
      height: 48px;
      background: rgba(124,58,237,0.2);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.25rem;
    }
    /* 对比表 */
    .compare-table th, .compare-table td {
      padding: 1rem;
      border-bottom: 1px solid rgba(255,255,255,0.05);
      color: #cbd5e0;
    }
    .compare-table th {
      font-weight: 600;
      color: white;
    }
    .highlight-col {
      color: var(--sports-cyan) !important;
      font-weight: 600;
    }
    /* FAQ */
    .accordion-button-custom {
      background: transparent;
      color: white;
      font-weight: 600;
      font-size: 1.1rem;
      border: none;
      width: 100%;
      text-align: left;
      padding: 1.2rem 1.5rem;
    }
    .accordion-item-custom {
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    /* 表单 */
    .form-control-dark {
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: 12px;
      color: white;
      padding: 0.8rem 1.2rem;
      transition: 0.2s;
    }
    .form-control-dark:focus {
      border-color: var(--sports-cyan);
      box-shadow: 0 0 12px rgba(0,240,255,0.25);
      background: rgba(255,255,255,0.1);
    }
    footer {
      background: #060B1E;
      color: rgba(255,255,255,0.6);
    }
    /* 脉冲动画 */
    @keyframes pulse-glow {
      0% { text-shadow: 0 0 5px rgba(0,240,255,0.5); }
      50% { text-shadow: 0 0 15px rgba(0,240,255,0.8); }
      100% { text-shadow: 0 0 5px rgba(0,240,255,0.5); }
    }
    .pulse-number {
      animation: pulse-glow 2s infinite;
    }