/* roulang page: index */
:root {
      --color-primary: #f97316;
      --color-primary-hover: #ea580c;
      --color-dark: #0f172a;
      --color-card-border: rgba(255, 255, 255, 0.08);
      --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      font-family: var(--font-stack);
      background-color: #0b0f19;
      color: #cbd5e1;
      overflow-x: hidden;
    }
    .grid-matrix-bg {
      background-image: radial-gradient(rgba(249, 115, 22, 0.12) 1px, transparent 1px);
      background-size: 28px 28px;
    }
    .panel-card {
      background: rgba(17, 24, 39, 0.75);
      border: 1px solid rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(12px);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .panel-card:hover {
      border-color: rgba(249, 115, 22, 0.4);
      transform: translateY(-4px);
      box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.5);
    }
    .industrial-tag {
      font-feature-settings: "tnum";
      font-variant-numeric: tabular-nums;
    }