/* roulang page: index */
:root {
      --primary: #0F4C3A;
      --primary-hover: #165b47;
      --accent: #25D366;
      --accent-orange: #FF6B00;
      --bg-light: #F8F9FA;
      --text-main: #111827;
      --text-muted: #4B5563;
      --border-color: #E5E7EB;
      --shadow-sm: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
      --radius-card: 16px;
      --radius-btn: 8px;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #ffffff;
    }

    .card-transition {
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-transition:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 28px -4px rgba(15, 76, 58, 0.12);
    }

    .hero-bg-overlay {
      background-image: linear-gradient(rgba(15, 76, 58, 0.94), rgba(15, 76, 58, 0.88)), url('/assets/images/348cb53de49875f9.png');
      background-size: cover;
      background-position: center;
    }

    .accordion-content {
      transition: max-height 0.3s ease-out, opacity 0.2s ease-in-out;
    }