/* roulang page: index */
:root {
      --primary-blue: #1e40af;
      --secondary-blue: #3b82f6;
      --accent-blue: #60a5fa;
      --light-blue-bg: #f8fafc;
      --card-bg: #ffffff;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
      --shadow-md: 0 4px 14px -1px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 12px 28px -4px rgba(15, 23, 42, 0.1);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--text-main);
      background-color: var(--light-blue-bg);
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* 顶部导航 */
    .site-navbar {
      background-color: #ffffff;
      border-bottom: 1px solid var(--border-color);
      padding: 0.9rem 0;
      position: sticky;
      top: 0;
      z-index: 1020;
      box-shadow: var(--shadow-sm);
    }
    .brand-logo {
      font-weight: 800;
      font-size: 1.45rem;
      color: var(--primary-blue);
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .brand-logo i {
      color: var(--secondary-blue);
    }
    .nav-btn {
      background-color: var(--primary-blue);
      color: #fff;
      font-size: 0.95rem;
      font-weight: 600;
      padding: 0.45rem 1.25rem;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease-in-out;
      border: 1px solid var(--primary-blue);
      text-decoration: none;
    }
    .nav-btn:hover {
      background-color: #1d4ed8;
      color: #fff;
      box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
    }

    /* 板块共有修饰 */
    .section-spacing {
      padding: 5rem 0;
    }
    .section-bg-white {
      background-color: #ffffff;
    }
    .section-bg-slate {
      background-color: #f1f5f9;
    }
    .section-header {
      margin-bottom: 3rem;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      position: relative;
      display: inline-block;
      margin-bottom: 0.75rem;
    }
    .section-subtitle {
      color: var(--text-muted);
      font-size: 1.05rem;
      max-width: 680px;
      margin: 0 auto;
    }

    /* 蓝图要求：Hero 无大图首屏，图标矩阵 + 状态条 + 短标题 */
    .hero-matrix {
      background: #ffffff;
      padding: 4.5rem 0 3.5rem;
      border-bottom: 1px solid var(--border-color);
    }
    .status-badge-bar {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: #eff6ff;
      border: 1px solid #bfdbfe;
      color: var(--primary-blue);
      padding: 0.4rem 1rem;
      border-radius: 9999px;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 1.5rem;
    }
    .hero-h1 {
      font-size: 2.6rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 1.25rem;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 2.5rem;
    }
    .matrix-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.5rem 1rem;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .matrix-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--accent-blue);
    }
    .matrix-icon {
      width: 52px;
      height: 52px;
      background: #eff6ff;
      color: var(--primary-blue);
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 0.85rem;
    }
    .matrix-name {
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: 0.35rem;
    }
    .matrix-tag {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* KPI 看板 */
    .kpi-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      box-shadow: var(--shadow-sm);
      border-top: 4px solid var(--secondary-blue);
      transition: all 0.2s;
    }
    .kpi-card:hover {
      box-shadow: var(--shadow-md);
    }
    .kpi-num {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--primary-blue);
      line-height: 1.1;
      margin-bottom: 0.35rem;
    }
    .kpi-title {
      font-weight: 600;
      font-size: 1rem;
      color: var(--text-main);
      margin-bottom: 0.45rem;
    }
    .kpi-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 0;
    }

    /* 服务矩阵 */
    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2.2rem 1.8rem;
      height: 100%;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: #bfdbfe;
    }
    .service-icon {
      font-size: 2rem;
      color: var(--secondary-blue);
      margin-bottom: 1rem;
      display: inline-block;
    }
    .service-title {
      font-weight: 700;
      font-size: 1.25rem;
      margin-bottom: 0.75rem;
    }
    .service-desc {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
    }

    /* 结果对比 */
    .comparison-table-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .comparison-table {
      margin-bottom: 0;
      width: 100%;
    }
    .comparison-table th {
      background-color: #f8fafc;
      padding: 1.2rem 1.5rem;
      font-weight: 700;
      border-bottom: 2px solid var(--border-color);
    }
    .comparison-table td {
      padding: 1.2rem 1.5rem;
      vertical-align: middle;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }
    .comparison-table tr:last-child td {
      border-bottom: none;
    }
    .comp-highlight {
      background-color: #eff6ff;
      color: var(--primary-blue);
      font-weight: 600;
    }

    /* 里程碑 / 时间线 */
    .timeline-container {
      position: relative;
      padding-left: 2.5rem;
    }
    .timeline-container::before {
      content: '';
      position: absolute;
      left: 7px;
      top: 0;
      bottom: 0;
      width: 2px;
      background: #cbd5e1;
    }
    .timeline-step {
      position: relative;
      margin-bottom: 2.25rem;
    }
    .timeline-step:last-child {
      margin-bottom: 0;
    }
    .timeline-dot {
      position: absolute;
      left: -2.5rem;
      top: 4px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: #ffffff;
      border: 4px solid var(--primary-blue);
    }
    .timeline-content {
      background: #ffffff;
      padding: 1.5rem;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .timeline-date {
      color: var(--secondary-blue);
      font-weight: 700;
      font-size: 0.95rem;
      margin-bottom: 0.35rem;
    }

    /* 资讯列表 */
    .news-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      height: 100%;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s;
    }
    .news-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .news-thumb {
      width: 100%;
      height: 190px;
      object-fit: cover;
    }
    .news-body {
      padding: 1.5rem;
    }
    .news-tag {
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--primary-blue);
      background: #eff6ff;
      padding: 0.25rem 0.65rem;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 0.75rem;
    }
    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
      line-height: 1.4;
    }
    .news-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 平台保障 */
    .guarantee-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem 1.25rem;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s;
    }
    .guarantee-card:hover {
      border-color: var(--secondary-blue);
      transform: translateY(-3px);
    }
    .guarantee-icon {
      font-size: 2.2rem;
      color: var(--primary-blue);
      margin-bottom: 0.75rem;
    }

    /* 快速解答 / 问答 */
    .qa-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      margin-bottom: 1.25rem;
      box-shadow: var(--shadow-sm);
    }
    .qa-q {
      font-weight: 700;
      font-size: 1.08rem;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 0.5rem;
      margin-bottom: 0.5rem;
    }
    .qa-q i {
      color: var(--secondary-blue);
    }
    .qa-a {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 0;
      padding-left: 1.65rem;
      line-height: 1.65;
    }

    /* 专题背景带 (独立站品牌主张) */
    .story-band {
      background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.85)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      color: #ffffff;
      padding: 5.5rem 0;
    }

    /* 转化表单区 */
    .conversion-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 3rem 2.5rem;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .form-control-custom {
      border: 1px solid var(--border-color);
      padding: 0.75rem 1rem;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
    }
    .form-control-custom:focus {
      border-color: var(--secondary-blue);
      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 4rem 0 2rem;
      font-size: 0.92rem;
      border-top: 1px solid #1e293b;
    }
    .footer-brand {
      color: #ffffff;
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 1rem;
      display: inline-block;
    }
    .footer-links a {
      color: #94a3b8;
      text-decoration: none;
      transition: color 0.2s;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      margin-top: 2.5rem;
      padding-top: 1.5rem;
      font-size: 0.85rem;
      text-align: center;
    }

    /* 响应式调整 */
    @media (max-width: 991.98px) {
      .hero-h1 { font-size: 2.1rem; }
      .section-title { font-size: 1.8rem; }
      .section-spacing { padding: 3.5rem 0; }
    }
    @media (max-width: 575.98px) {
      .hero-h1 { font-size: 1.7rem; }
      .matrix-item { padding: 1rem 0.5rem; }
      .conversion-card { padding: 2rem 1.25rem; }
      .comparison-table td, .comparison-table th { padding: 0.75rem; font-size: 0.85rem; }
    }