/* roulang page: index */
:root {
      --primary-color: #0d7a68;
      --primary-dark: #0a5c4e;
      --accent-blue: #1b64da;
      --accent-coral: #f97316;
      --bg-clinical: #f2fbf9;
      --text-main: #1a2d2b;
      --text-muted: #3e5652;
      --border-color: #d8ece7;
      --card-shadow: 0 10px 30px -5px rgba(13, 122, 104, 0.08);
      --card-shadow-hover: 0 20px 40px -10px rgba(13, 122, 104, 0.16);
    }
    body {
      color: var(--text-main);
      background-color: #fafdfc;
      overflow-x: hidden;
    }
    .custom-card-shadow {
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card-shadow:hover {
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-4px);
    }
    .glass-nav {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(13, 122, 104, 0.12);
    }
    .hero-slide {
      display: none;
      opacity: 0;
      transition: opacity 0.6s ease-in-out;
    }
    .hero-slide.active {
      display: block;
      opacity: 1;
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .accordion-item.open .accordion-content {
      max-height: 380px;
    }
    .accordion-item.open .accordion-icon {
      transform: rotate(180deg);
    }
    .tab-content {
      display: none;
    }
    .tab-content.active {
      display: block;
      animation: fadeIn 0.4s ease;
    }
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(6px); }
      to { opacity: 1; transform: translateY(0); }
    }