/* roulang page: index */
:root {
      --primary-color: #0a58ca;
      --primary-hover: #084298;
      --accent-green: #00a878;
      --text-main: #0f172a;
      --text-muted: #475569;
      --bg-base: #f8fafc;
      --bg-card: #ffffff;
      --card-shadow: 0 10px 30px -10px rgba(10, 88, 202, 0.08);
      --radius-lg: 20px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Noto Sans", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    .container-custom {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }

    .card-modern {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      box-shadow: var(--card-shadow);
      border: 1px solid rgba(226, 232, 240, 0.8);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .card-modern:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 35px -10px rgba(10, 88, 202, 0.14);
      border-color: rgba(13, 110, 253, 0.25);
    }

    .badge-capsule {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      border-radius: 9999px;
      padding: 0.3rem 0.85rem;
      font-size: 0.8125rem;
      font-weight: 600;
    }

    .hero-gradient-bg {
      position: relative;
      background-image: linear-gradient(135deg, rgba(11, 19, 43, 0.94) 0%, rgba(10, 88, 202, 0.88) 100%), url('/assets/images/fa951c84311f83f8.webp');
      background-size: cover;
      background-position: center;
    }

    .section-dark {
      background-color: var(--darkbase);
      background-image: radial-gradient(circle at 15% 50%, rgba(13, 110, 253, 0.15) 0%, transparent 40%), radial-gradient(circle at 85% 30%, rgba(0, 168, 120, 0.12) 0%, transparent 45%);
    }

    .btn-gradient {
      background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
      color: #ffffff;
      transition: all 0.25s ease;
    }
    .btn-gradient:hover {
      background: linear-gradient(135deg, #0a58ca 0%, #084298 100%);
      box-shadow: 0 8px 20px -4px rgba(13, 110, 253, 0.45);
    }

    details > summary {
      list-style: none;
    }
    details > summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary svg {
      transform: rotate(180deg);
    }