/* roulang page: index */
:root {
      --deep-green: #0F1A14;
      --champagne-gold: #C8A96E;
      --warm-white: #F5F0E8;
      --matte-black: #1C1C1C;
      --light-gold: #E0CDA4;
      --text-primary: #1C1C1C;
      --text-secondary: #4B5563;
      --text-light: #D1D5DB;
      --shadow-gold: 0 8px 40px rgba(200, 169, 110, 0.15);
      --radius-lg: 1.5rem;
      --radius-xl: 2rem;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      background-color: var(--deep-green);
      color: var(--text-primary);
      line-height: 1.8;
      font-weight: 400;
      -webkit-font-smoothing: antialiased;
    }

    /* 自定义动画 */
    @keyframes fadeUp {
      0% { opacity: 0; transform: translateY(2rem); }
      100% { opacity: 1; transform: translateY(0); }
    }

    .animate-fade-up {
      animation: fadeUp 0.7s ease both;
    }

    .section-reveal {
      opacity: 0;
      transform: translateY(2rem);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .section-reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* 卡片悬停效果 */
    .card-hover {
      transition: all 0.3s ease;
      border: 1px solid rgba(200, 169, 110, 0.2);
      border-radius: var(--radius-xl);
    }

    .card-hover:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-gold);
      border-color: rgba(200, 169, 110, 0.5);
    }

    /* 导航滚动效果 */
    .nav-scrolled {
      background-color: rgba(15, 26, 20, 0.9);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(200, 169, 110, 0.2);
    }

    /* 按钮过渡 */
    .btn-primary {
      background-color: var(--champagne-gold);
      color: var(--deep-green);
      border-radius: 9999px;
      padding: 0.75rem 2rem;
      font-weight: 600;
      transition: all 0.3s ease;
      display: inline-block;
      text-align: center;
    }

    .btn-primary:hover {
      background-color: #D4B87A;
      transform: scale(1.05);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--champagne-gold);
      color: var(--champagne-gold);
      border-radius: 9999px;
      padding: 0.75rem 2rem;
      font-weight: 600;
      transition: all 0.3s ease;
    }

    .btn-outline:hover {
      background-color: rgba(200, 169, 110, 0.1);
      border-color: var(--light-gold);
      color: var(--light-gold);
    }

    /* 手风琴样式 */
    .faq-item {
      border-bottom: 1px solid rgba(200, 169, 110, 0.2);
    }

    .faq-question {
      cursor: pointer;
      transition: background 0.2s;
    }

    .faq-question:hover {
      background-color: rgba(200, 169, 110, 0.05);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.3s;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 1.5rem;
    }

    /* 汉堡菜单 */
    .mobile-menu {
      transition: transform 0.3s ease, opacity 0.3s;
      transform: translateY(-10px);
      opacity: 0;
      pointer-events: none;
    }

    .mobile-menu.open {
      transform: translateY(0);
      opacity: 1;
      pointer-events: auto;
    }

    /* 自定义滚动条 */
    ::-webkit-scrollbar {
      width: 6px;
    }
    ::-webkit-scrollbar-track {
      background: var(--deep-green);
    }
    ::-webkit-scrollbar-thumb {
      background: var(--champagne-gold);
      border-radius: 3px;
    }