/* roulang page: index */
:root {
      --primary-color: #0F52BA;
      --primary-hover: #1E40AF;
      --accent-color: #10B981;
      --accent-hover: #059669;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #64748B;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
      --radius-base: 12px;
    }
    
    html {
      scroll-behavior: smooth;
    }
    body {
      color: var(--text-main);
      background-color: var(--bg-light);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      overflow-x: hidden;
    }
    .custom-container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    @media (min-width: 768px) {
      .custom-container {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }
    .hero-bg-overlay {
      background: linear-gradient(135deg, rgba(15, 82, 186, 0.94) 0%, rgba(11, 17, 32, 0.92) 100%);
    }
    .card-hover {
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 30px -10px rgba(15, 82, 186, 0.12);
    }
    .btn-glow {
      box-shadow: 0 4px 14px 0 rgba(16, 185, 129, 0.35);
      transition: all 0.2s ease-in-out;
    }
    .btn-glow:hover {
      box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
      transform: translateY(-2px);
    }
    .btn-primary-action {
      background-color: var(--primary-color);
      transition: all 0.2s ease-in-out;
    }
    .btn-primary-action:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(15, 82, 186, 0.3);
    }