/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    :root {
      --primary: #1A2B1F;
      --accent: #E85D04;
      --bg: #F5F3EF;
      --card-bg: #FFFFFF;
      --card-border: #E0DDD6;
      --text-main: #1E1E1E;
      --text-muted: #5A5A5A;
      --radius: 6px;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
      --shadow-hover: 0 8px 20px rgba(0,0,0,0.08);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      background-color: var(--bg);
      color: var(--text-main);
      line-height: 1.8;
      display: flex;
      min-height: 100vh;
    }
    /* 左侧竖向导航 (桌面) */
    .left-nav {
      width: 220px;
      height: 100vh;
      position: fixed;
      top: 0;
      left: 0;
      background-color: var(--primary);
      color: white;
      display: flex;
      flex-direction: column;
      padding: 2rem 1.2rem;
      z-index: 50;
      box-shadow: 2px 0 12px rgba(0,0,0,0.06);
    }
    .logo-area {
      margin-bottom: 2.5rem;
    }
    .logo-text {
      font-size: 1.7rem;
      font-weight: 700;
      letter-spacing: 1px;
      line-height: 1.2;
      color: white;
    }
    .logo-tagline {
      font-size: 0.85rem;
      color: rgba(255,255,255,0.7);
      margin-top: 0.2rem;
    }
    .nav-links {
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      flex: 1;
    }
    .nav-links a {
      color: rgba(255,255,255,0.85);
      text-decoration: none;
      font-weight: 500;
      font-size: 1rem;
      padding: 0.6rem 0.8rem;
      border-left: 3px solid transparent;
      transition: all 0.2s ease;
      border-radius: 2px;
    }
    .nav-links a:hover {
      color: white;
      background-color: rgba(255,255,255,0.08);
      border-left-color: var(--accent);
    }
    .mobile-header {
      display: none;
    }
    /* 右侧内容区 */
    .main-content {
      margin-left: 220px;
      width: 100%;
      max-width: 960px;
      padding: 2rem 2.5rem 0;
    }
    section {
      padding: 4rem 0;
      border-bottom: 1px solid rgba(0,0,0,0.05);
    }
    section:last-of-type {
      border-bottom: none;
    }
    h1 {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1rem;
      color: var(--text-main);
    }
    h2 {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 2rem;
      color: var(--primary);
    }
    h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }
    .btn-primary {
      background-color: var(--accent);
      color: white;
      font-weight: 600;
      padding: 0.8rem 2rem;
      border-radius: var(--radius);
      border: none;
      cursor: pointer;
      transition: background 0.2s, transform 0.1s;
      display: inline-block;
      text-decoration: none;
    }
    .btn-primary:hover {
      background-color: #C94A00;
      transform: translateY(-1px);
    }
    .btn-outline {
      border: 2px solid var(--primary);
      color: var(--primary);
      background: transparent;
      font-weight: 600;
      padding: 0.7rem 1.8rem;
      border-radius: var(--radius);
      transition: all 0.2s;
      display: inline-block;
      text-decoration: none;
    }
    .btn-outline:hover {
      background-color: var(--primary);
      color: white;
    }
    .card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 1.8rem;
      box-shadow: var(--shadow-sm);
      transition: box-shadow 0.25s, transform 0.2s;
    }
    .card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }
    .accent-bar-left {
      border-left: 4px solid var(--accent);
      padding-left: 1.2rem;
    }
    .primary-bar-left {
      border-left: 4px solid var(--primary);
      padding-left: 1.2rem;
    }
    .stat-number {
      font-size: 2.8rem;
      font-weight: 700;
      color: var(--accent);
      line-height: 1.2;
    }
    footer {
      background: #2C2C2C;
      color: #ccc;
      padding: 2.5rem 0;
      margin-top: 2rem;
    }
    /* 响应式 */
    @media (max-width: 1024px) {
      .main-content {
        max-width: 100%;
        padding: 1.5rem;
      }
    }
    @media (max-width: 768px) {
      body {
        display: block;
      }
      .left-nav {
        display: none;
      }
      .mobile-header {
        display: flex;
        position: sticky;
        top: 0;
        background: var(--primary);
        color: white;
        height: 56px;
        align-items: center;
        justify-content: space-between;
        padding: 0 1.2rem;
        z-index: 60;
      }
      .mobile-header .logo-text {
        font-size: 1.4rem;
      }
      #mobileMenuBtn {
        background: none;
        border: none;
        color: white;
        font-size: 1.6rem;
        cursor: pointer;
      }
      .mobile-nav-panel {
        display: none;
        flex-direction: column;
        background: var(--primary);
        padding: 1rem 1.5rem;
        gap: 0.5rem;
      }
      .mobile-nav-panel.open {
        display: flex;
      }
      .mobile-nav-panel a {
        color: white;
        text-decoration: none;
        font-weight: 500;
        padding: 0.6rem 0;
        border-bottom: 1px solid rgba(255,255,255,0.15);
      }
      .main-content {
        margin-left: 0;
        padding: 1rem 1.2rem;
      }
      h1 {
        font-size: 2rem;
      }
      h2 {
        font-size: 1.6rem;
      }
      .grid-cols-2, .grid-cols-3 {
        grid-template-columns: 1fr !important;
      }
      .stat-number {
        font-size: 2rem;
      }
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .faq-item {
      border-bottom: 1px solid var(--card-border);
      padding: 1rem 0;
    }
    .faq-question {
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      color: var(--text-muted);
    }
    .faq-item.open .faq-answer {
      max-height: 180px;
      margin-top: 0.8rem;
    }