/* roulang page: index */
:root {
      --bg-base: #0B0E14;
      --bg-card: #12171F;
      --color-primary: #00F5A0;
      --color-secondary: #7928CA;
      --text-main: #F0F3F6;
      --text-sub: #94A3B8;
      --border-subtle: rgba(255, 255, 255, 0.08);
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .mono-num {
      font-family: 'JetBrains Mono', 'Fira Code', monospace;
    }
    .glow-green {
      text-shadow: 0 0 12px rgba(0, 245, 160, 0.45);
    }
    .card-hover-fx {
      transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
    }
    .card-hover-fx:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 245, 160, 0.4);
      box-shadow: 0 12px 30px -8px rgba(0, 245, 160, 0.15);
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
    }
    .accordion-active .accordion-content {
      max-height: 300px;
    }
    .accordion-active .accordion-icon {
      transform: rotate(180deg);
    }