/* roulang page: index */
:root {
      --bg-dark: #0B0F19;
      --card-bg: #111827;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --cyan-main: #06B6D4;
      --emerald-main: #10B981;
      --border-color: #1E293B;
    }
    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;
    }
    .num-tabular {
      font-variant-numeric: tabular-nums;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(6, 182, 212, 0.15) 0%, rgba(11, 15, 25, 0.8) 70%);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -10px rgba(6, 182, 212, 0.2);
      border-color: rgba(6, 182, 212, 0.4);
    }

/* roulang page: category1 */
:root {
      --bg-dark: #0B0F19;
      --card-bg: #111827;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --cyan-main: #06B6D4;
      --emerald-main: #10B981;
      --border-color: #1E293B;
    }
    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;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(6, 182, 212, 0.15) 0%, rgba(11, 15, 25, 0.8) 70%);
    }
    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -10px rgba(6, 182, 212, 0.2);
      border-color: rgba(6, 182, 212, 0.4);
    }
    .stepper-line::after {
      content: '';
      position: absolute;
      top: 24px;
      left: 50%;
      width: 100%;
      height: 2px;
      background: #1E293B;
      z-index: 1;
    }
    @media (max-width: 768px) {
      .stepper-line::after {
        display: none;
      }
    }