/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    :root {
      --primary: #0066FF;
      --primary-dark: #0052CC;
      --energy-green: #00D68F;
      --accent-red: #FF4D4F;
      --bg-light: #F5F7FA;
      --bg-dark: #0A1628;
      --card-bg: #FFFFFF;
      --text-main: #1A1A2E;
      --text-secondary: #4A5568;
      --text-muted: #A0AEC0;
      --border-light: rgba(0,102,255,0.2);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --radius-pill: 20px;
      --shadow-card: 0 2px 12px rgba(0,0,0,0.04);
      --shadow-hover: 0 8px 24px rgba(0,102,255,0.12);
      --transition: 0.25s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Inter", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    .container-main {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 20px;
    }
    /* 导航栏毛玻璃效果 */
    .nav-glass {
      background: rgba(10, 22, 40, 0.92);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border-bottom: 1px solid rgba(255,255,255,0.15);
    }
    .nav-link {
      position: relative;
      transition: color 0.2s;
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: white;
      transition: width 0.25s ease;
    }
    .nav-link:hover::after {
      width: 100%;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: white;
      border-radius: var(--radius-sm);
      padding: 14px 32px;
      font-weight: 600;
      transition: all 0.2s ease;
      box-shadow: 0 4px 10px rgba(0,102,255,0.25);
      display: inline-block;
      text-align: center;
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #0052CC, #003D99);
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(0,102,255,0.35);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      border-radius: var(--radius-sm);
      padding: 14px 32px;
      font-weight: 600;
      transition: all 0.2s ease;
      display: inline-block;
      text-align: center;
    }
    .btn-outline:hover {
      background: var(--primary);
      color: white;
    }
    .btn-sm {
      padding: 10px 24px;
      font-size: 0.9rem;
      border-radius: var(--radius-sm);
    }
    .hero-gradient {
      background: linear-gradient(135deg, rgba(10,22,40,0.8) 0%, rgba(0,102,255,0.4) 100%);
    }
    .data-badge {
      border-left: 4px solid;
      border-image: linear-gradient(to bottom, var(--primary), var(--energy-green)) 1;
      background: white;
      border-radius: var(--radius-lg);
      padding: 24px;
      min-width: 180px;
      box-shadow: var(--shadow-card);
    }
    .card-hover {
      transition: all var(--transition);
      background: white;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      border: 1px solid transparent;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--border-light);
    }
    .faq-question {
      transition: background 0.2s;
      cursor: pointer;
    }
    .faq-question:hover {
      background: #F0F7FF;
    }
    .tag-pill {
      background: rgba(0,102,255,0.08);
      color: var(--primary);
      border-radius: var(--radius-pill);
      padding: 4px 12px;
      font-size: 0.75rem;
      font-weight: 500;
    }
    .text-link {
      color: var(--primary);
      font-weight: 500;
      text-decoration: none;
      position: relative;
      display: inline-block;
    }
    .text-link::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 1.5px;
      background: var(--primary);
      transition: width 0.25s ease;
    }
    .text-link:hover::after {
      width: 100%;
    }
    /* 脉冲呼吸动画 */
    @keyframes pulse-ring {
      0% { box-shadow: 0 0 0 0 rgba(255,77,79,0.5); }
      70% { box-shadow: 0 0 0 8px rgba(255,77,79,0); }
      100% { box-shadow: 0 0 0 0 rgba(255,77,79,0); }
    }
    .live-badge {
      animation: pulse-ring 1.8s infinite;
    }
    /* 滚动指示箭头动画 */
    @keyframes bounce-down {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(8px); }
    }
    .scroll-indicator {
      animation: bounce-down 2s infinite;
    }
    /* 手风琴过渡 */
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.3s;
    }
    .faq-item.active .faq-content {
      max-height: 200px;
      padding: 16px 20px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-icon {
      transition: transform 0.3s;
    }
    @media (max-width: 768px) {
      .desktop-nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 2.2rem;
      }
      .grid-service {
        grid-template-columns: 1fr;
      }
      .grid-cases {
        grid-template-columns: 1fr;
      }
      .faq-layout {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (min-width: 769px) {
      .mobile-menu-btn {
        display: none;
      }
      .desktop-nav-links {
        display: flex;
      }
    }