/* roulang page: index */
:root {
      --color-primary: #112948;
      --color-accent: #C5A262;
      --color-accent-hover: #B38F4E;
      --color-dark: #1F2429;
      --color-night: #0D1826;
      --color-bg-gray: #F8F9FA;
      --color-border: #E2E8F0;
      --transition-smooth: cubic-bezier(0.16, 1, 0.3, 1) 0.25s;
    }

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

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--color-dark);
      line-height: 1.8;
      background-color: #ffffff;
      -webkit-font-smoothing: antialiased;
    }

    .hover-lift {
      transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
    }
    .hover-lift:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 32px -8px rgba(17, 41, 72, 0.12);
    }

    .hero-slide {
      transition: opacity 0.8s ease-in-out;
    }

    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out, opacity 0.25s ease-in;
      opacity: 0;
    }
    .faq-item.active .faq-content {
      max-height: 240px;
      opacity: 1;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .gold-gradient-text {
      background: linear-gradient(135deg, #ECC980 0%, #C5A262 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }