/* roulang page: index */
:root {
      --brand-deep-green: #0F4C3A;
      --brand-warm-gold: #C97B3B;
      --bg-warm-white: #FAF9F7;
      --text-dark: #1F2937;
      --text-body: #4B5563;
      --text-muted: #6B7280;
      --border-light: #E5E7EB;
      --shadow-sm: 0 2px 8px rgba(15, 76, 58, 0.06);
      --shadow-md: 0 8px 24px rgba(15, 76, 58, 0.12);
      --radius-card: 24px;
      --radius-btn: 12px;
      --radius-badge: 8px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
      --transition-base: 0.2s ease;
      --section-padding: 80px 0;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm-white);
      color: var(--text-body);
      line-height: 1.7;
      margin: 0;
      overflow-x: hidden;
    }
    h1, h2, h3, .data-number {
      color: var(--text-dark);
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 导航杂志双行 */
    .navbar-brand-text {
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--brand-deep-green);
      letter-spacing: 0.5px;
    }
    .brand-row {
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(4px);
      height: 64px;
      display: flex;
      align-items: center;
      border-bottom: 1px solid var(--border-light);
      padding: 0 24px;
    }
    .channel-row {
      background: white;
      border-bottom: 1px solid var(--border-light);
      padding: 0 24px;
      overflow-x: auto;
      white-space: nowrap;
      display: flex;
      align-items: center;
      height: 48px;
    }
    .channel-nav {
      display: flex;
      gap: 4px;
    }
    .channel-link {
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-body);
      transition: background 0.2s, color 0.2s;
      display: inline-block;
    }
    .channel-link.active {
      background: var(--brand-deep-green);
      color: white;
      font-weight: 600;
    }
    .channel-link:hover:not(.active) {
      background: #F3F4F6;
      color: var(--brand-deep-green);
    }
    .navbar-sticky {
      position: sticky;
      top: 0;
      z-index: 1020;
      background: white;
      box-shadow: var(--shadow-sm);
    }
    .btn-primary-custom {
      background: var(--brand-deep-green);
      border: none;
      color: white;
      border-radius: var(--radius-btn);
      padding: 10px 24px;
      font-weight: 500;
      transition: background 0.2s, transform 0.2s;
    }
    .btn-primary-custom:hover {
      background: #0A3A2A;
      transform: scale(1.02);
    }
    .btn-outline-custom {
      background: transparent;
      border: 2px solid var(--brand-deep-green);
      color: var(--brand-deep-green);
      border-radius: var(--radius-btn);
      padding: 10px 24px;
      font-weight: 500;
      transition: all 0.2s;
    }
    .btn-outline-custom:hover {
      background: rgba(15,76,58,0.05);
    }
    .btn-cta-gradient {
      background: linear-gradient(135deg, #0F4C3A 0%, #1A6B52 100%);
      border: none;
      color: white;
      border-radius: var(--radius-btn);
      padding: 14px 36px;
      font-weight: 600;
      transition: all 0.25s;
    }
    .btn-cta-gradient:hover {
      filter: brightness(1.1);
      transform: scale(1.02);
    }
    /* Hero数据看板 */
    .hero-section {
      background: linear-gradient(135deg, rgba(15,76,58,0.08) 0%, rgba(201,123,59,0.06) 100%);
      padding: 60px 0 80px;
      position: relative;
    }
    .metric-card {
      background: rgba(255,255,255,0.9);
      backdrop-filter: blur(2px);
      border-radius: 24px;
      padding: 24px 16px;
      box-shadow: var(--shadow-sm);
      border: 1px solid rgba(229,231,235,0.7);
      text-align: center;
      transition: all 0.25s;
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .data-number {
      font-size: 2.8rem;
      font-weight: 700;
      color: var(--brand-deep-green);
      line-height: 1.2;
    }
    .trend-badge {
      background: rgba(201,123,59,0.12);
      color: var(--brand-warm-gold);
      border-radius: 20px;
      padding: 2px 10px;
      font-size: 0.8rem;
      font-weight: 600;
    }
    /* 指标卡 */
    .indicator-card {
      background: white;
      border-radius: 20px;
      padding: 24px 16px;
      box-shadow: var(--shadow-sm);
      transition: 0.25s;
      text-align: center;
    }
    .indicator-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }
    /* 服务矩阵不对称 */
    .service-wide {
      background: white;
      border-radius: 24px;
      padding: 32px;
      border: 1px solid var(--border-light);
      transition: 0.2s;
    }
    .service-wide:hover, .service-std:hover {
      border-color: var(--brand-deep-green);
      box-shadow: var(--shadow-md);
    }
    .service-std {
      background: white;
      border-radius: 24px;
      padding: 28px;
      border: 1px solid var(--border-light);
      transition: 0.2s;
    }
    /* 对比卡片 */
    .compare-left {
      background: #F3F4F6;
      border-radius: 20px;
      padding: 28px;
    }
    .compare-right {
      background: linear-gradient(135deg, rgba(15,76,58,0.05) 0%, rgba(15,76,58,0.02) 100%);
      border: 1px solid var(--brand-deep-green);
      border-radius: 20px;
      padding: 28px;
    }
    /* FAQ */
    .accordion-button:not(.collapsed) {
      background-color: rgba(15,76,58,0.04);
      color: var(--brand-deep-green);
      font-weight: 600;
    }
    .accordion-button:focus {
      box-shadow: none;
      border-color: var(--border-light);
    }
    .q-badge {
      background: var(--brand-deep-green);
      color: white;
      width: 28px;
      height: 28px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      margin-right: 12px;
      font-weight: 700;
    }
    /* 表单区 */
    .contact-section {
      background: linear-gradient(135deg, #0A3A2A 0%, #0F4C3A 100%);
      border-radius: 40px 40px 0 0;
      padding: 60px 24px;
      color: white;
    }
    .form-control {
      border-radius: 8px;
      border: 1px solid #D1D5DB;
      padding: 12px 16px;
    }
    .form-control:focus {
      border-color: var(--brand-deep-green);
      box-shadow: 0 0 0 3px rgba(15,76,58,0.2);
    }
    .footer-dark {
      background: #1F2937;
      color: #D1D5DB;
    }
    @media (max-width: 768px) {
      .data-number {
        font-size: 2rem;
      }
      .hero-section {
        padding: 40px 0 50px;
      }
      .channel-link {
        padding: 6px 12px;
        font-size: 0.8rem;
      }
    }