/* roulang page: index */
:root {
      --primary: #1E40AF;
      --primary-hover: #1D4ED8;
      --accent: #0284C7;
      --accent-warning: #D97706;
      --bg-page: #F8FAFC;
      --card-white: #FFFFFF;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --shadow-soft: 0 4px 20px -2px rgba(30, 64, 175, 0.05);
      --shadow-hover: 0 12px 28px -4px rgba(30, 64, 175, 0.12);
    }
    body {
      background-color: var(--bg-page);
      color: var(--text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: var(--shadow-soft);
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-shadow:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }
    .carousel-slide {
      transition: opacity 0.6s ease-in-out;
    }