/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    :root {
      --deep-purple: #1a0e1f;
      --grape-red: #8b1e4a;
      --silver-gray: #c4c9ce;
      --warm-gold: #d49b3b;
      --light-lavender: #f5f0f5;
      --charcoal: #2a1f2a;
      --card-radius-lg: 20px;
      --card-radius-md: 16px;
      --card-radius-sm: 12px;
      --shadow-hover: 0 12px 32px rgba(139, 30, 74, 0.18);
      --shadow-card: 0 4px 12px rgba(0,0,0,0.04);
      --transition: all 0.25s ease;
    }
    body {
      font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      background-color: #ffffff;
      color: #1f1a1f;
      line-height: 1.7;
      margin: 0;
      box-sizing: border-box;
    }
    * {
      box-sizing: border-box;
    }
    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    @media (min-width: 768px) {
      .container {
        padding-left: 2.5rem;
        padding-right: 2.5rem;
      }
    }
    /* 导航 */
    .nav-blur {
      background: rgba(26, 14, 31, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(196, 201, 206, 0.2);
    }
    .nav-link {
      color: #c4c9ce;
      transition: var(--transition);
      font-weight: 500;
      position: relative;
    }
    .nav-link:hover {
      color: #8b1e4a;
    }
    .nav-link.active {
      color: #8b1e4a;
      border-bottom: 2px solid #8b1e4a;
      padding-bottom: 4px;
    }
    .btn-primary {
      background: #8b1e4a;
      color: white;
      border-radius: 30px;
      padding: 12px 28px;
      font-weight: 600;
      transition: var(--transition);
      box-shadow: 0 4px 12px rgba(139,30,74,0.3);
      border: none;
      display: inline-block;
      text-align: center;
    }
    .btn-primary:hover {
      background: #6e173b;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(139,30,74,0.4);
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid #c4c9ce;
      color: #8b1e4a;
      border-radius: 30px;
      padding: 12px 28px;
      font-weight: 600;
      transition: var(--transition);
      display: inline-block;
      text-align: center;
    }
    .btn-outline:hover {
      border-color: #8b1e4a;
      background: rgba(139,30,74,0.04);
      color: #6e173b;
    }
    .btn-gold {
      background: #d49b3b;
      color: #1a0e1f;
      border-radius: 30px;
      padding: 14px 34px;
      font-weight: 700;
      transition: var(--transition);
      box-shadow: 0 6px 18px rgba(212,155,59,0.35);
      border: none;
    }
    .btn-gold:hover {
      background: #b8822b;
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(212,155,59,0.5);
    }
    /* 卡片 */
    .card-feature {
      background: #f5f0f5;
      border-radius: var(--card-radius-lg);
      padding: 2rem 1.8rem;
      transition: var(--transition);
      box-shadow: var(--shadow-card);
    }
    .card-feature:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .case-card {
      background: white;
      border-radius: var(--card-radius-md);
      overflow: hidden;
      transition: var(--transition);
      box-shadow: var(--shadow-card);
    }
    .case-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .case-card img {
      transition: filter 0.3s ease;
    }
    .case-card:hover img {
      filter: saturate(1.2);
    }
    /* 手风琴 */
    .faq-item {
      border-bottom: 1px solid #e5dce5;
      padding: 1.2rem 0;
      cursor: pointer;
    }
    .faq-question {
      font-weight: 700;
      font-size: 1.15rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: #1a0e1f;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.3s ease;
      color: #3a2e3a;
      line-height: 1.7;
    }
    .faq-item.open .faq-answer {
      max-height: 200px;
      padding-top: 0.8rem;
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }
    .faq-icon {
      transition: transform 0.3s ease;
      color: #8b1e4a;
      font-size: 1.5rem;
    }
    /* 移动菜单 */
    .mobile-menu {
      display: none;
    }
    @media (max-width: 767px) {
      .desktop-nav {
        display: none;
      }
      .mobile-menu {
        display: block;
      }
      .mobile-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(26,14,31,0.96);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        padding: 2rem 0;
        gap: 1.5rem;
      }
      .mobile-links.open {
        display: flex;
      }
    }