/* roulang page: index */
:root {
      --brand: #0A8F82;
      --brand-hover: #087368;
      --dark-bg: #0F141C;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .font-mono-num {
      font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    }
    .section-divider {
      border-top: 1px solid #EEF2F6;
    }
    .bento-hero-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.25rem;
    }
    @media (min-width: 1024px) {
      .bento-hero-grid {
        grid-template-columns: 1.6fr 1fr;
        grid-template-rows: auto auto;
      }
    }
    .badge-pulse {
      animation: pulseGlow 2s infinite ease-in-out;
    }
    @keyframes pulseGlow {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.7; transform: scale(0.97); }
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
    }
    .accordion-content.open {
      max-height: 280px;
      transition: max-height 0.4s ease-in;
    }