/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');

    :root {
      --primary: #C85A2D;
      --primary-dark: #A84A22;
      --secondary: #2B2B2B;
      --bg-warm: #FAF6F2;
      --accent-green: #3A5F4B;
      --card-white: #FFFFFF;
      --text-body: #5C5C5C;
      --text-light: #8A8A8A;
      --border-light: #E8E3DD;
      --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
      --radius-card: 10px;
      --radius-btn: 8px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      --font-number: "Inter", "Segoe UI", system-ui, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--text-body);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4 {
      font-family: var(--font-sans);
      color: var(--secondary);
      margin: 0;
      font-weight: 600;
    }

    h1 {
      font-size: clamp(2.5rem, 6vw, 3.25rem);
      font-weight: 700;
      letter-spacing: -0.5px;
      line-height: 1.2;
      color: var(--secondary);
    }

    h2 {
      font-size: clamp(2rem, 4vw, 2.35rem);
      margin-bottom: 1rem;
    }

    h3 {
      font-size: 1.35rem;
      font-weight: 600;
    }

    .text-body {
      color: var(--text-body);
      font-size: 1rem;
    }

    .text-light {
      color: var(--text-light);
      font-size: 0.9rem;
    }

    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 按钮与交互 */
    .btn-primary {
      background-color: var(--primary);
      color: white;
      border-radius: var(--radius-btn);
      padding: 0.7rem 2rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.2s ease;
      border: none;
      cursor: pointer;
      text-decoration: none;
      font-size: 1rem;
    }

    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: scale(1.02);
      box-shadow: var(--shadow-md);
    }

    .btn-outline {
      border: 2px solid var(--primary);
      color: var(--primary);
      background: transparent;
      border-radius: var(--radius-btn);
      padding: 0.65rem 2rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.2s ease;
      cursor: pointer;
      text-decoration: none;
      font-size: 1rem;
    }

    .btn-outline:hover {
      background-color: var(--primary);
      color: white;
    }

    .accent-link {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.2s;
    }
    .accent-link:hover {
      color: var(--accent-green);
      text-decoration: underline;
    }

    /* 卡片通用 */
    .card {
      background: var(--card-white);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-sm);
      transition: box-shadow 0.25s ease, transform 0.2s ease;
    }
    .card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }

    /* 导航 */
    .navbar {
      background: white;
      border-bottom: 1px solid var(--border-light);
      height: 68px;
      display: flex;
      align-items: center;
      position: sticky;
      top: 0;
      z-index: 50;
      transition: box-shadow 0.2s;
    }
    .navbar.scrolled {
      box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    }

    .nav-link {
      color: var(--secondary);
      font-weight: 500;
      font-size: 0.95rem;
      text-decoration: none;
      padding: 0.5rem 0.8rem;
      transition: color 0.2s;
    }
    .nav-link:hover {
      color: var(--primary);
    }

    /* 优势区非对称网格 */
    .advantage-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
    }
    .advantage-large {
      grid-row: span 2;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    @media (max-width: 768px) {
      .advantage-grid {
        grid-template-columns: 1fr;
      }
      .advantage-large {
        grid-row: auto;
      }
    }

    /* 服务标签切换 */
    .service-tab {
      border-left: 3px solid transparent;
      padding: 0.8rem 1.2rem;
      color: var(--secondary);
      font-weight: 500;
      cursor: pointer;
      transition: all 0.2s;
    }
    .service-tab.active {
      border-left-color: var(--primary);
      color: var(--primary);
      background-color: rgba(200,90,45,0.04);
      font-weight: 600;
    }

    /* FAQ 手风琴 */
    .faq-item {
      border-bottom: 1px solid var(--border-light);
    }
    .faq-question {
      cursor: pointer;
      padding: 1.2rem 0;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--secondary);
      transition: color 0.2s;
    }
    .faq-question i {
      transition: transform 0.3s;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      color: var(--text-body);
    }

    /* 时间轴 */
    .timeline-line {
      position: relative;
    }
    .timeline-node {
      width: 16px;
      height: 16px;
      background: var(--accent-green);
      border-radius: 50%;
      margin: 0 auto 0.8rem;
    }

    /* 滚动卡片隐藏滚动条 */
    .scroll-x-container::-webkit-scrollbar {
      display: none;
    }

    footer a {
      color: #b0b0b0;
      text-decoration: none;
      transition: color 0.2s;
    }
    footer a:hover {
      color: var(--primary);
    }

    @media (max-width: 640px) {
      .navbar .nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
    }
    @media (min-width: 641px) {
      .mobile-menu-btn {
        display: none;
      }
    }