/* roulang page: index */
:root {
      --primary: #0052FF;
      --primary-hover: #0041cc;
      --secondary: #00C087;
      --accent: #F59E0B;
      --bg-light: #F8FAFC;
      --text-dark: #0F172A;
      --text-muted: #475569;
    }
    body {
      color: var(--text-dark);
      background-color: var(--bg-light);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .hero-bg {
      background-image: linear-gradient(to bottom, rgba(11, 15, 25, 0.88), rgba(11, 15, 25, 0.96)), url('/assets/images/c9a3836b40a3afba.png');
      background-size: cover;
      background-position: center;
    }
    .tech-bg {
      background-image: linear-gradient(135deg, rgba(11, 15, 25, 0.95), rgba(30, 41, 59, 0.98)), url('/assets/images/786fd9b315bba581.jpg');
      background-size: cover;
      background-position: center;
    }
    .card-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-shadow:hover {
      box-shadow: 0 16px 32px -4px rgba(0, 82, 255, 0.12);
      transform: translateY(-4px);
    }
    .badge-soft {
      display: inline-flex;
      align-items: center;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 8px;
    }
    .brand-gradient {
      background: linear-gradient(135deg, #0052FF 0%, #3B82F6 100%);
    }