/* roulang page: index */
@import url('/assets/css/vendor/7d0d260fcb-all.min.css');

    :root {
      --primary: #00E5FF;
      --primary-soft: rgba(0, 229, 255, 0.15);
      --accent: #7B61FF;
      --bg-deep: #0A0F1F;
      --card-bg: rgba(255, 255, 255, 0.05);
      --card-border: rgba(255, 255, 255, 0.10);
      --text-body: #CBD5E1;
      --text-muted: #94A3B8;
      --text-dim: #64748B;
      --white: #FFFFFF;
      --glass-blur: blur(20px);
      --radius-card: 16px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
      --shadow-glow: 0 0 20px rgba(0, 229, 255, 0.4);
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      background-color: var(--bg-deep);
      color: var(--text-body);
      line-height: 1.7;
      margin: 0;
      -webkit-font-smoothing: antialiased;
      scroll-behavior: smooth;
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: var(--card-bg);
      backdrop-filter: var(--glass-blur);
      -webkit-backdrop-filter: var(--glass-blur);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 24px rgba(0, 229, 255, 0.15);
      border-color: rgba(0, 229, 255, 0.3);
    }

    /* 发光主按钮 */
    .btn-primary {
      background: var(--primary);
      color: #0A0F1F;
      font-weight: 600;
      border-radius: 9999px;
      padding: 12px 32px;
      box-shadow: 0 0 24px rgba(0, 229, 255, 0.5), 0 0 48px rgba(0, 229, 255, 0.2);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: none;
      cursor: pointer;
      letter-spacing: 0.02em;
    }
    .btn-primary:hover {
      box-shadow: 0 0 36px rgba(0, 229, 255, 0.7), 0 0 64px rgba(0, 229, 255, 0.3);
      transform: scale(1.03);
    }

    .btn-ghost {
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.3);
      color: white;
      font-weight: 500;
      border-radius: 9999px;
      padding: 12px 32px;
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }
    .btn-ghost:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: 0 0 16px rgba(0, 229, 255, 0.3);
    }

    /* 导航下划线动效 */
    .nav-link {
      position: relative;
      color: var(--text-body);
      transition: color 0.3s;
      font-weight: 500;
    }
    .nav-link:hover {
      color: white;
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--primary);
      transition: width 0.3s ease;
    }
    .nav-link:hover::after {
      width: 100%;
    }
    .nav-link.active {
      color: white;
    }
    .nav-link.active::after {
      width: 100%;
    }
    .active-dot {
      position: absolute;
      bottom: -10px;
      left: 50%;
      transform: translateX(-50%);
      width: 4px;
      height: 4px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary);
      opacity: 0;
    }
    .nav-link.active .active-dot {
      opacity: 1;
    }

    /* 网格背景动画 */
    .hero-grid-bg {
      background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
      background-size: 60px 60px;
      animation: gridMove 20s linear infinite;
    }
    @keyframes gridMove {
      0% { background-position: 0 0; }
      100% { background-position: 60px 60px; }
    }

    .glow-orb {
      position: absolute;
      border-radius: 50%;
      filter: blur(120px);
      opacity: 0.15;
      pointer-events: none;
    }

    input, textarea {
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 12px;
      padding: 12px 20px;
      color: white;
      transition: all 0.3s;
      width: 100%;
    }
    input:focus, textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 12px rgba(0,229,255,0.3);
    }

    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease-in-out;
    }
    .faq-item.open .faq-content {
      max-height: 200px;
    }
    .faq-icon {
      transition: transform 0.3s;
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }