/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --deep-blue: #0A0E27;
      --card-bg: #141832;
      --card-hover: #1C2348;
      --electric-cyan: #00F0FF;
      --electric-cyan-soft: rgba(0, 240, 255, 0.08);
      --electric-cyan-glow: rgba(0, 240, 255, 0.5);
      --text-primary: #F0F4FF;
      --text-secondary: #A0B3D9;
      --border-dim: rgba(0, 240, 255, 0.15);
      --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
      --radius-card: 12px;
      --radius-btn: 8px;
      --font-mono: 'SF Mono', 'Menlo', 'Consolas', monospace;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
      background-color: var(--deep-blue);
      color: var(--text-primary);
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航毛玻璃效果 */
    .glass-nav {
      background: rgba(10, 14, 39, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0, 240, 255, 0.15);
    }

    .text-cyan {
      color: var(--electric-cyan);
    }
    .bg-cyan {
      background-color: var(--electric-cyan);
    }
    .border-cyan {
      border-color: var(--electric-cyan);
    }
    .hover-glow:hover {
      box-shadow: 0 0 20px var(--electric-cyan-glow);
      transition: box-shadow 0.2s ease;
    }

    /* 按钮规范 */
    .btn-primary {
      background-color: var(--electric-cyan);
      color: var(--deep-blue);
      font-weight: 700;
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.2s ease;
      border: none;
      cursor: pointer;
      letter-spacing: 0.5px;
    }
    .btn-primary:hover {
      box-shadow: 0 0 24px var(--electric-cyan-glow);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--electric-cyan);
      color: var(--electric-cyan);
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      transition: all 0.2s ease;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-outline:hover {
      background: rgba(0, 240, 255, 0.1);
      border-color: rgba(0, 240, 255, 0.8);
    }

    .card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      border: 1px solid var(--electric-cyan-soft);
      box-shadow: var(--shadow-card);
      transition: all 0.25s ease;
    }
    .card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 240, 255, 0.4);
      box-shadow: 0 12px 32px rgba(0,0,0,0.6);
    }

    .metric-number {
      font-family: var(--font-mono);
      font-weight: 700;
      font-size: 2.5rem;
      color: var(--electric-cyan);
      line-height: 1.2;
    }

    /* 动态进度条 */
    .progress-bg {
      background: rgba(255,255,255,0.08);
      height: 6px;
      border-radius: 4px;
      overflow: hidden;
    }
    .progress-fill {
      background: var(--electric-cyan);
      height: 100%;
      width: 0%;
      border-radius: 4px;
      box-shadow: 0 0 12px var(--electric-cyan-glow);
      transition: width 1.2s cubic-bezier(0.22, 0.61, 0.36, 1);
    }

    /* FAQ手风琴动画 */
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, opacity 0.3s ease;
      opacity: 0;
    }
    .faq-item.active .faq-content {
      max-height: 200px;
      opacity: 1;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    /* 导航链接激活状态 */
    .nav-link {
      position: relative;
      padding-bottom: 4px;
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--electric-cyan);
      box-shadow: 0 0 8px var(--electric-cyan);
    }

    @media (max-width: 768px) {
      .metric-number {
        font-size: 1.75rem;
      }
      .container {
        padding: 0 20px;
      }
    }