/* roulang page: index */
:root {
      --primary: #5E2B41;
      --primary-deep: #3F1D2C;
      --secondary: #7A8B5E;
      --accent: #C49A6C;
      --bg-warm: #FBF7F2;
      --dark-bg: #2C1A22;
      --text-main: #2C2C2C;
      --text-soft: #5E5E5E;
      --border-light: rgba(94,43,65,0.12);
      --shadow-card: 0 4px 20px rgba(94,43,65,0.08);
      --shadow-dark: 0 8px 32px rgba(0,0,0,0.25);
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-tag: 6px;
      --font-serif: 'Noto Serif SC', serif;
      --font-sans: 'Noto Sans SC', sans-serif;
      --font-mono: 'DM Mono', monospace;
      --container-max: 1280px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s;
    }
    button, input, select {
      font-family: inherit;
      outline: none;
    }
    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 导航 */
    .navbar {
      position: sticky;
      top: 0;
      z-index: 50;
      background-color: var(--bg-warm);
      box-shadow: 0 1px 8px rgba(0,0,0,0.04);
      backdrop-filter: blur(4px);
      padding: 12px 0;
    }
    .nav-row1 {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 1.6rem;
      color: var(--primary);
      letter-spacing: 1px;
    }
    .logo-icon {
      font-size: 2rem;
      color: var(--accent);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 18px;
    }
    .search-icon {
      font-size: 1.2rem;
      color: var(--text-soft);
      cursor: pointer;
      transition: color 0.2s;
    }
    .search-icon:hover {
      color: var(--primary);
    }
    .btn-primary {
      background: var(--primary);
      color: white;
      border: none;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: all 0.25s ease;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      box-shadow: 0 4px 10px rgba(94,43,65,0.2);
      letter-spacing: 0.3px;
    }
    .btn-primary:hover {
      background: var(--primary-deep);
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(94,43,65,0.28);
    }
    .nav-tabs {
      display: flex;
      margin-top: 14px;
      gap: 8px;
      overflow-x: auto;
      padding-bottom: 6px;
      scrollbar-width: thin;
      -webkit-overflow-scrolling: touch;
    }
    .nav-tabs::-webkit-scrollbar {
      height: 3px;
    }
    .nav-tabs::-webkit-scrollbar-thumb {
      background: var(--secondary);
      border-radius: 10px;
    }
    .tab-pill {
      flex-shrink: 0;
      padding: 8px 20px;
      border-radius: 40px;
      font-weight: 500;
      font-size: 0.9rem;
      background: transparent;
      border: 1px solid var(--secondary);
      color: var(--secondary);
      transition: all 0.2s;
      white-space: nowrap;
      cursor: pointer;
    }
    .tab-pill.active, .tab-pill:hover {
      background: var(--primary);
      border-color: var(--primary);
      color: white;
    }
    /* Hero */
    .hero {
      background: linear-gradient(135deg, rgba(44,26,34,0.7) 0%, rgba(94,43,65,0.65) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      min-height: 90vh;
      display: flex;
      align-items: center;
      color: white;
      position: relative;
    }
    .hero-content {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 40px;
      padding: 60px 0;
    }
    .hero-text {
      flex: 1 1 500px;
    }
    .hero h1 {
      font-family: var(--font-serif);
      font-size: clamp(2.4rem, 5vw, 3.2rem);
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 24px;
      color: white;
    }
    .hero-sub {
      font-size: 1.15rem;
      color: #E0D7C6;
      margin-bottom: 32px;
      font-weight: 400;
    }
    .hero-metrics {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      margin-top: 20px;
    }
    .metric-item {
      background: rgba(255,255,255,0.08);
      backdrop-filter: blur(8px);
      border-radius: var(--radius-card);
      padding: 20px 24px;
      text-align: center;
      border: 1px solid rgba(255,255,255,0.2);
    }
    .metric-number {
      font-family: var(--font-mono);
      font-size: 2.4rem;
      font-weight: 500;
      color: var(--accent);
    }
    .metric-label {
      font-size: 0.9rem;
      color: #CBC1B0;
    }
    .hero-data-card {
      background: rgba(44,26,34,0.7);
      backdrop-filter: blur(12px);
      border-radius: var(--radius-card);
      padding: 28px;
      border: 1px solid rgba(255,255,255,0.15);
    }
    /* 区块通用 */
    section {
      padding: 90px 0;
    }
    .section-title {
      font-family: var(--font-serif);
      font-size: 2.2rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .section-sub {
      color: var(--secondary);
      font-weight: 500;
      margin-bottom: 48px;
    }
    /* 数据看板 */
    .dashboard {
      background: var(--dark-bg);
      color: white;
      background-image: radial-gradient(circle at 20% 30%, rgba(196,154,108,0.15) 0%, transparent 40%);
    }
    .dashboard-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .stat-card {
      background: rgba(255,255,255,0.06);
      backdrop-filter: blur(4px);
      border-radius: var(--radius-card);
      padding: 32px 20px;
      text-align: center;
      border: 1px solid rgba(255,255,255,0.1);
    }
    .stat-icon {
      font-size: 2rem;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .stat-number {
      font-family: var(--font-mono);
      font-size: 2.8rem;
      font-weight: 500;
      color: var(--accent);
    }
    .stat-label {
      color: #B7B09C;
      font-size: 0.95rem;
    }
    /* 服务体系 2x3 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 32px 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: all 0.25s;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 12px 28px rgba(94,43,65,0.14);
      border-color: var(--primary);
    }
    .service-icon {
      font-size: 2.3rem;
      color: var(--primary);
      margin-bottom: 20px;
    }
    .service-card h3 {
      font-family: var(--font-serif);
      font-size: 1.3rem;
      margin-bottom: 10px;
      color: var(--primary);
    }
    /* 对比 */
    .comparison-container {
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
      align-items: center;
    }
    .compare-col {
      flex: 1 1 280px;
      background: white;
      border-radius: var(--radius-card);
      padding: 32px;
      box-shadow: var(--shadow-card);
    }
    .compare-bar {
      display: flex;
      align-items: center;
      margin: 20px 0;
    }
    .progress-bg {
      flex: 1;
      height: 10px;
      background: #eee;
      border-radius: 20px;
      margin: 0 12px;
      overflow: hidden;
    }
    .progress-fill {
      height: 100%;
      border-radius: 20px;
      width: 0%;
    }
    .left-fill { background: var(--primary); width: 65%; }
    .right-fill { background: var(--secondary); width: 28%; }
    /* FAQ */
    .faq-item {
      background: white;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      margin-bottom: 16px;
      padding: 20px;
      cursor: pointer;
    }
    .faq-question {
      font-weight: 700;
      font-size: 1.1rem;
      display: flex;
      justify-content: space-between;
    }
    .faq-answer {
      margin-top: 12px;
      color: var(--text-soft);
      display: none;
    }
    .faq-item.open .faq-answer {
      display: block;
    }
    /* CTA 表单 */
    .cta-section {
      background: #E9E3D5;
      position: relative;
    }
    .form-card {
      background: white;
      border-radius: 20px;
      padding: 48px;
      max-width: 680px;
      margin: 0 auto;
      box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    }
    .form-input {
      width: 100%;
      padding: 14px;
      border: 1px solid #ddd;
      border-radius: var(--radius-btn);
      margin-bottom: 20px;
    }
    .btn-cta {
      background: var(--accent);
      color: var(--dark-bg);
      font-weight: 700;
      width: 100%;
      padding: 16px;
      border: none;
      border-radius: var(--radius-btn);
      font-size: 1.1rem;
    }
    .btn-cta:hover {
      background: #b0874f;
    }
    /* 页脚 */
    .footer {
      background: #2C1A22;
      color: #CCC;
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
    }
    @media (max-width: 1024px) {
      .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .hero-content { flex-direction: column; }
      .dashboard-grid { grid-template-columns: 1fr 1fr; }
      .services-grid { grid-template-columns: 1fr; }
      .comparison-container { flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr; }
      .nav-tabs { gap: 4px; }
    }