/* roulang page: index */
:root {
      --primary: #1E40AF;
      --secondary: #0284C7;
      --accent: #0EA5E9;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-light);
      color: #334155;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    }
    .hero-card-stack {
      perspective: 1000px;
    }
    .hero-main-card {
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }