/* roulang page: index */
:root {
      --primary: #0D9488;
      --primary-hover: #0F766E;
      --accent: #0284C7;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --bg-page: #F8FAFC;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-page);
      color: var(--text-body);
      font-feature-settings: "cv02", "cv03", "cv04", "cv11";
    }
    .tabular-nums {
      font-variant-numeric: tabular-nums;
    }
    .hero-bg {
      background: radial-gradient(circle at 80% 20%, rgba(13, 148, 136, 0.15), transparent 40%),
                  radial-gradient(circle at 10% 80%, rgba(2, 132, 199, 0.1), transparent 40%),
                  #0B1120;
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
    }
    .accordion-item.active .accordion-content {
      max-height: 500px;
      transition: max-height 0.3s ease-in-out;
    }
    .accordion-item.active .accordion-icon {
      transform: rotate(180deg);
    }