/* roulang page: index */
:root {
      --ocean-deep: #040B14;
      --ocean-surface: #0E1726;
      --ocean-navy: #0A4D68;
      --ocean-accent: #FF6B00;
      --ocean-border: rgba(255, 255, 255, 0.08);
      --ocean-text-muted: #94A3B8;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: var(--ocean-deep);
      color: #E2E8F0;
      overflow-x: hidden;
    }
    .hero-bg {
      background-image: linear-gradient(rgba(4, 11, 20, 0.82), rgba(4, 11, 20, 0.95)), url('/assets/images/f714540bb6396dcf.webp');
      background-size: cover;
      background-position: center;
    }
    .banner-dark-pattern {
      background-image: linear-gradient(to right, rgba(10, 77, 104, 0.25), rgba(4, 11, 20, 0.92)), url('/assets/images/18f09e62c4fc7933.webp');
      background-size: cover;
      background-position: center;
    }
    .industrial-card {
      background: #0B132B;
      border: 1px solid var(--ocean-border);
      transition: all 0.25s ease-in-out;
    }
    .industrial-card:hover {
      border-color: rgba(255, 107, 0, 0.4);
      transform: translateY(-2px);
      box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.7);
    }
    .btn-action-orange {
      background-color: #FF6B00;
      color: #040B14;
      font-weight: 700;
      border-radius: 4px;
      transition: all 0.2s ease;
    }
    .btn-action-orange:hover {
      background-color: #FF8533;
      box-shadow: 0 0 15px rgba(255, 107, 0, 0.5);
    }
    .btn-action-outline {
      border: 1px solid rgba(255, 255, 255, 0.3);
      color: #FFFFFF;
      border-radius: 4px;
      transition: all 0.2s ease;
    }
    .btn-action-outline:hover {
      border-color: #FF6B00;
      color: #FF6B00;
      background: rgba(255, 107, 0, 0.05);
    }
    details summary::-webkit-details-marker {
      display: none;
    }