/* roulang page: index */
:root {
      --color-primary: #0D9488;
      --color-primary-dark: #0F766E;
      --color-accent: #F97316;
      --color-bg-deep: #041F1E;
      --color-text-main: #0F172A;
      --color-text-muted: #475569;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--color-text-main);
      background-color: #F8FAFC;
      line-height: 1.75;
      margin: 0;
      padding: 0;
    }
    .custom-scroll-smooth {
      scroll-behavior: smooth;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(13, 148, 136, 0.18) 0%, rgba(4, 31, 30, 0.85) 100%);
    }
    .glass-dark {
      background: rgba(4, 31, 30, 0.75);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .glass-light {
      background: rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border: 1px solid rgba(226, 232, 240, 0.8);
    }
    .bento-card {
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .bento-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 30px -10px rgba(15, 118, 110, 0.15);
    }
    details summary::-webkit-details-marker {
      display: none;
    }