/* roulang page: index */
:root {
      --bg-dark: #060B16;
      --bg-surface: #0B132B;
      --bg-card: rgba(15, 23, 42, 0.72);
      --primary-cyan: #06B6D4;
      --primary-blue: #3B82F6;
      --accent-green: #10B981;
      --accent-amber: #F59E0B;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --text-dim: #64748B;
      --border-glow: rgba(56, 189, 248, 0.22);
    }

    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }

    /* 科技背景与光斑特效 */
    .tech-bg {
      background-image: 
        radial-gradient(circle at 15% 20%, rgba(6, 182, 212, 0.12) 0%, transparent 45%),
        radial-gradient(circle at 85% 65%, rgba(59, 130, 246, 0.14) 0%, transparent 50%),
        radial-gradient(circle at 50% 90%, rgba(16, 185, 129, 0.08) 0%, transparent 40%);
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-glow);
      transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .glass-card:hover {
      border-color: rgba(56, 189, 248, 0.45);
      box-shadow: 0 12px 36px rgba(6, 182, 212, 0.15);
      transform: translateY(-4px);
    }

    /* 霓虹发光按钮 */
    .glow-btn-primary {
      background: linear-gradient(135deg, #06B6D4 0%, #3B82F6 100%);
      color: #FFFFFF;
      box-shadow: 0 0 22px rgba(6, 182, 212, 0.38);
      transition: all 0.3s ease;
    }
    .glow-btn-primary:hover {
      box-shadow: 0 0 32px rgba(6, 182, 212, 0.65);
      transform: scale(1.02);
    }

    .glow-btn-outline {
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(56, 189, 248, 0.35);
      color: #E2E8F0;
      backdrop-filter: blur(8px);
      transition: all 0.3s ease;
    }
    .glow-btn-outline:hover {
      border-color: #06B6D4;
      background: rgba(6, 182, 212, 0.12);
      color: #38BDF8;
    }

    /* 细线分割发光渐变 */
    .glow-divider {
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.35), transparent);
    }

    /* 隐藏滚动条 */
    .no-scrollbar::-webkit-scrollbar {
      display: none;
    }
    .no-scrollbar {
      -ms-overflow-style: none;
      scrollbar-width: none;
    }