/* roulang page: index */
:root {
      --primary-deep-green: #2B5E3B;
      --primary-deep-green-dark: #1E3B28;
      --accent-orange: #F15A24;
      --accent-orange-hover: #D94A1A;
      --bg-warm-white: #FAFAF7;
      --card-bg: #FFFFFF;
      --text-dark: #333333;
      --text-gray: #666666;
      --text-light-gray: #CCCCCC;
      --border-light: #E0E0E0;
      --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04);
      --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
      --radius-card: 12px;
      --radius-button: 8px;
      --radius-large: 16px;
      --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Inter", sans-serif;
      --transition-smooth: 0.25s ease;
      --container-max: 1200px;
      --spacing-section: 80px;
      --spacing-element: 24px;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-family);
      background-color: var(--bg-warm-white);
      color: var(--text-dark);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    @media (max-width: 768px) {
      .container {
        padding: 0 16px;
      }
      :root {
        --spacing-section: 60px;
      }
    }

    /* 导航栏 */
    .navbar {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0,0,0,0.05);
      padding: 16px 0;
    }
    .navbar .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      color: var(--primary-deep-green);
      font-weight: 700;
      font-size: 1.5rem;
      letter-spacing: 0.5px;
    }
    .logo svg {
      width: 36px;
      height: 36px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-links a {
      text-decoration: none;
      color: var(--text-dark);
      font-weight: 500;
      font-size: 1rem;
      transition: color 0.2s;
      position: relative;
      padding-bottom: 4px;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--accent-orange);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-orange);
    }
    .btn-primary {
      background: var(--accent-orange);
      color: white;
      border: none;
      padding: 12px 28px;
      border-radius: var(--radius-button);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      transition: background 0.2s, transform 0.2s;
      text-decoration: none;
      display: inline-block;
      text-align: center;
      line-height: 1.2;
    }
    .btn-primary:hover {
      background: var(--accent-orange-hover);
      transform: scale(1.02);
    }
    .btn-secondary {
      background: transparent;
      color: var(--primary-deep-green);
      border: 1.5px solid var(--primary-deep-green);
      padding: 12px 28px;
      border-radius: var(--radius-button);
      font-weight: 600;
      cursor: pointer;
      transition: background 0.2s, transform 0.2s;
      text-decoration: none;
      display: inline-block;
    }
    .btn-secondary:hover {
      background: #E8F0E9;
      transform: scale(1.02);
    }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: none;
      border: none;
    }
    .hamburger span {
      width: 24px;
      height: 2.5px;
      background: var(--primary-deep-green);
      border-radius: 2px;
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 20px 30px rgba(0,0,0,0.1);
        gap: 20px;
        border-bottom: 1px solid #eee;
      }
      .nav-links.active {
        display: flex;
      }
      .hamburger {
        display: flex;
      }
      .navbar .btn-primary {
        display: none;
      }
      .nav-links .btn-primary {
        display: block;
        width: 100%;
        margin-top: 8px;
      }
    }

    /* Hero */
    .hero {
      background: var(--bg-warm-white);
      padding: 60px 0;
    }
    .hero .container {
      display: flex;
      align-items: center;
      gap: 50px;
    }
    .hero-content {
      flex: 1;
    }
    .hero-content h1 {
      font-size: 2.8rem;
      font-weight: 700;
      color: var(--primary-deep-green);
      line-height: 1.3;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-content .highlight {
      color: var(--accent-orange);
    }
    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-gray);
      margin-bottom: 30px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 30px;
    }
    .live-stats {
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
      font-size: 0.95rem;
      color: var(--text-dark);
    }
    .live-stats span {
      font-weight: 700;
      color: var(--accent-orange);
      font-size: 1.4rem;
    }
    .hero-image {
      flex: 1;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: 24px;
      min-height: 380px;
      box-shadow: var(--shadow-card-hover);
    }
    @media (max-width: 768px) {
      .hero .container {
        flex-direction: column;
      }
      .hero-image {
        width: 100%;
        min-height: 280px;
        order: -1;
      }
      .hero-content h1 {
        font-size: 2.2rem;
      }
    }

    /* 区块标题 */
    .section-title {
      text-align: center;
      margin-bottom: 48px;
    }
    .section-title h2 {
      font-size: 2rem;
      font-weight: 600;
      color: var(--primary-deep-green);
      margin-bottom: 12px;
    }
    .section-title p {
      color: var(--text-gray);
      font-size: 1.1rem;
    }

    /* 实时看板 */
    .dashboard {
      background: linear-gradient(135deg, var(--primary-deep-green) 0%, #1E3B28 100%);
      padding: var(--spacing-section) 0;
      color: white;
    }
    .dashboard .cards {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .stat-card {
      background: rgba(255,255,255,0.08);
      backdrop-filter: blur(10px);
      border-radius: var(--radius-card);
      padding: 28px 20px;
      text-align: center;
      border: 1px solid rgba(255,255,255,0.1);
    }
    .stat-number {
      font-size: 2.8rem;
      font-weight: 700;
      color: var(--accent-orange);
      line-height: 1.2;
    }
    .stat-label {
      margin-top: 8px;
      font-size: 0.95rem;
      opacity: 0.9;
    }
    @media (max-width: 768px) {
      .dashboard .cards {
        grid-template-columns: 1fr 1fr;
      }
    }

    /* 服务矩阵 */
    .services {
      padding: var(--spacing-section) 0;
    }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      box-shadow: var(--shadow-card);
      transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
      text-align: center;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card-hover);
    }
    .service-icon {
      width: 64px;
      height: 64px;
      margin: 0 auto 20px;
      background: #E8F0E9;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .service-card h3 {
      font-size: 1.3rem;
      margin-bottom: 12px;
      color: var(--primary-deep-green);
    }
    .service-card p {
      color: var(--text-gray);
      margin-bottom: 20px;
    }
    .text-link {
      color: var(--accent-orange);
      font-weight: 600;
      text-decoration: none;
      transition: opacity 0.2s;
    }
    .text-link:hover {
      text-decoration: underline;
    }
    @media (max-width: 768px) {
      .services-grid {
        grid-template-columns: 1fr;
      }
    }

    /* 对比表 */
    .compare {
      padding: var(--spacing-section) 0;
      background: white;
    }
    .table-wrapper {
      overflow-x: auto;
      padding-bottom: 10px;
    }
    .compare-table {
      width: 100%;
      min-width: 700px;
      border-collapse: collapse;
      text-align: center;
    }
    .compare-table th, .compare-table td {
      padding: 16px 12px;
      border-bottom: 1px solid #eee;
    }
    .compare-table th {
      background: #f9f9f9;
      font-weight: 600;
    }
    .plan-highlight {
      background: #FDF8F5;
      border-left: 2px solid var(--accent-orange);
      border-right: 2px solid var(--accent-orange);
    }
    .badge {
      background: var(--accent-orange);
      color: white;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.75rem;
      font-weight: 600;
      display: inline-block;
      margin-bottom: 6px;
    }
    .check-green {
      color: #2B5E3B;
      font-weight: bold;
      font-size: 1.2rem;
    }
    .text-muted {
      color: #aaa;
    }

    /* FAQ */
    .faq {
      padding: var(--spacing-section) 0;
    }
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .faq-item {
      background: white;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-weight: 600;
      color: var(--primary-deep-green);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: white;
      border: none;
      width: 100%;
      font-size: 1rem;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #F9FAF9;
      padding: 0 24px;
    }
    .faq-answer p {
      padding: 16px 0;
      color: var(--text-dark);
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
    }
    @media (max-width: 768px) {
      .faq-grid {
        grid-template-columns: 1fr;
      }
    }

    /* CTA 表单 */
    .cta-form {
      background: linear-gradient(135deg, #2B5E3B 0%, #1E3B28 100%);
      padding: var(--spacing-section) 0;
    }
    .cta-card {
      background: white;
      border-radius: var(--radius-large);
      padding: 48px;
      display: flex;
      gap: 40px;
      align-items: center;
      box-shadow: 0 20px 35px rgba(0,0,0,0.2);
    }
    .cta-text h3 {
      font-size: 1.8rem;
      color: var(--primary-deep-green);
      margin-bottom: 12px;
    }
    .cta-text p {
      color: var(--text-gray);
    }
    .cta-form-fields {
      flex: 1;
    }
    .input-group {
      display: flex;
      gap: 8px;
      margin-bottom: 16px;
    }
    .input-group input {
      flex: 1;
      padding: 14px 16px;
      border: 1px solid #ddd;
      border-radius: var(--radius-button);
      font-size: 1rem;
    }
    .input-group input:focus {
      outline: none;
      border-color: var(--accent-orange);
      box-shadow: 0 0 0 3px rgba(241,90,36,0.2);
    }
    .btn-send-code {
      background: #eee;
      border: none;
      padding: 0 16px;
      border-radius: var(--radius-button);
      cursor: pointer;
      white-space: nowrap;
    }
    @media (max-width: 768px) {
      .cta-card {
        flex-direction: column;
        padding: 28px;
      }
    }

    /* 页脚 */
    .footer {
      background: #1E2E24;
      color: #CCC;
      padding: 48px 0 24px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 32px;
    }
    .footer a {
      color: #CCC;
      text-decoration: none;
    }
    .footer a:hover {
      color: white;
    }
    .copyright {
      border-top: 1px solid #444;
      padding-top: 20px;
      text-align: center;
      font-size: 0.9rem;
    }
    @media (max-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    button {
      cursor: pointer;
      font-family: inherit;
    }