/* roulang page: index */
:root {
      --primary-color: #10B981;
      --primary-dark: #059669;
      --secondary-color: #F97316;
      --secondary-dark: #EA580C;
      --bg-light: #F8FAFC;
      --bg-alt: #F1F5F9;
      --dark-navy: #0F172A;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --card-border: #E2E8F0;
      --shadow-sm: 0 4px 20px -2px rgba(16, 185, 129, 0.08);
      --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.12);
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-full: 9999px;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #FFFFFF;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    a:hover { color: var(--primary-dark); }
    img { max-width: 100%; height: auto; display: block; }
    ul { list-style: none; margin: 0; padding: 0; }

    /* 顶部服务条 */
    .top-utility-bar {
      height: 36px;
      background: #E2E8F0;
      color: var(--text-muted);
      font-size: 12px;
      line-height: 36px;
      border-bottom: 1px solid #CBD5E1;
    }
    .top-utility-bar a { color: var(--text-muted); margin-left: 18px; }
    .top-utility-bar a:hover { color: var(--text-main); }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      transition: all 0.3s ease;
    }
    .site-header.scrolled {
      background: #FFFFFF;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      color: var(--primary-color);
      font-size: 26px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary-color);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary-color);
      transition: width 0.25s ease;
    }
    .nav-links a:hover::after, .nav-links a.active::after {
      width: 100%;
    }
    .btn-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 0 24px;
      background: var(--secondary-color);
      color: #FFFFFF !important;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-full);
      box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
      transition: all 0.25s ease;
      cursor: pointer;
      border: none;
    }
    .btn-cta:hover {
      background: var(--secondary-dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(234, 88, 12, 0.45);
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 0 24px;
      background: var(--primary-color);
      color: #FFFFFF !important;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-full);
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
      transition: all 0.25s ease;
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
    }

    /* Hero */
    .hero-section {
      position: relative;
      background: linear-gradient(rgba(15, 23, 42, 0.82), rgba(6, 78, 59, 0.88)), url('/assets/images/6e76bf10669f628d.webp') center/cover no-repeat;
      padding: 100px 0 110px;
      color: #FFFFFF;
      overflow: hidden;
    }
    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.25);
      backdrop-filter: blur(8px);
      padding: 6px 16px;
      border-radius: var(--radius-full);
      font-size: 13px;
      margin-bottom: 24px;
      color: #A7F3D0;
    }
    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-desc {
      font-size: 16px;
      line-height: 1.8;
      color: #E2E8F0;
      margin-bottom: 32px;
      max-width: 620px;
    }
    .hero-card {
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-lg);
      color: var(--text-main);
      border: 1px solid rgba(255, 255, 255, 0.6);
    }
    .hero-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .hero-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .form-group { margin-bottom: 16px; }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-input {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border-radius: 8px;
      border: 1px solid var(--card-border);
      background: #FFFFFF;
      font-size: 14px;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s;
    }
    .form-input:focus {
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
    }

    /* 板块通用规范 */
    .section-spacing {
      padding: 85px 0;
    }
    .bg-light-alt { background-color: var(--bg-light); }
    .bg-white { background-color: #FFFFFF; }
    .bg-dark-navy {
      background-color: var(--dark-navy);
      color: #FFFFFF;
    }
    .section-header {
      margin-bottom: 48px;
      text-align: center;
    }
    .section-subtitle {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-dark);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .bg-dark-navy .section-title { color: #FFFFFF; }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 720px;
      margin: 0 auto;
      line-height: 1.7;
    }
    .bg-dark-navy .section-desc { color: #94A3B8; }

    /* 通用卡片 */
    .feature-card {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      height: 100%;
      transition: all 0.3s ease;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(16, 185, 129, 0.3);
    }
    .icon-box {
      width: 54px;
      height: 54px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 18px;
    }
    .icon-green { background: #ECFDF5; color: var(--primary-dark); }
    .icon-orange { background: #FFF7ED; color: var(--secondary-color); }
    .icon-blue { background: #EFF6FF; color: #2563EB; }
    .icon-purple { background: #FAF5FF; color: #7C3AED; }

    /* 板块一：指标看板 */
    .metric-box {
      text-align: center;
      background: #FFFFFF;
      padding: 24px 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--card-border);
      box-shadow: var(--shadow-sm);
    }
    .metric-number {
      font-size: 38px;
      font-weight: 800;
      color: var(--secondary-color);
      line-height: 1.1;
      margin-bottom: 6px;
      font-family: inherit;
    }
    .metric-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .metric-sub { font-size: 12px; color: var(--text-muted); }

    /* 板块三：集成方案推荐徽章 */
    .solution-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--card-border);
      padding: 36px 28px;
      position: relative;
      height: 100%;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .solution-card.featured {
      border: 2px solid var(--primary-color);
      box-shadow: 0 10px 30px rgba(16, 185, 129, 0.15);
    }
    .featured-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--primary-color);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      box-shadow: 0 2px 8px rgba(16, 185, 129, 0.4);
    }

    /* 板块四：对比表格 */
    .compare-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--card-border);
      background: #FFFFFF;
    }
    .compare-table th {
      padding: 16px 20px;
      font-size: 15px;
      font-weight: 700;
      text-align: left;
    }
    .compare-table td {
      padding: 16px 20px;
      font-size: 14px;
      border-top: 1px solid var(--card-border);
      vertical-align: middle;
    }
    .col-bad { background: #FEF2F2; color: #991B1B; }
    .col-good { background: #ECFDF5; color: #065F46; font-weight: 600; }

    /* 板块五：里程碑时间轴 */
    .timeline-wrap {
      position: relative;
      padding: 20px 0;
    }
    .timeline-item {
      position: relative;
      padding-left: 36px;
      margin-bottom: 32px;
    }
    .timeline-item::before {
      content: '';
      position: absolute;
      left: 7px;
      top: 6px;
      bottom: -32px;
      width: 2px;
      background: #334155;
    }
    .timeline-item:last-child::before { display: none; }
    .timeline-dot {
      position: absolute;
      left: 0;
      top: 4px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--primary-color);
      box-shadow: 0 0 10px var(--primary-color);
    }
    .timeline-title {
      font-size: 17px;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 6px;
    }
    .timeline-text { font-size: 14px; color: #94A3B8; }

    /* 板块六：标杆案例 */
    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--card-border);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      margin-bottom: 30px;
    }
    .case-img {
      width: 100%;
      height: 240px;
      object-fit: cover;
    }
    .case-content {
      padding: 32px;
    }

    /* 板块七：全校吞吐量条 */
    .stats-stripe {
      background: linear-gradient(135deg, #059669 0%, #10B981 100%);
      color: #FFFFFF;
      padding: 48px 0;
    }
    .stats-item {
      text-align: center;
      border-right: 1px solid rgba(255, 255, 255, 0.2);
    }
    .stats-item:last-child { border-right: none; }
    .stats-val { font-size: 34px; font-weight: 800; margin-bottom: 4px; }
    .stats-tit { font-size: 14px; color: #D1FAE5; }

    /* 板块八：评价卡片 */
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars { color: #F59E0B; margin-bottom: 12px; }
    .review-quote { font-size: 14px; color: var(--text-main); line-height: 1.7; margin-bottom: 20px; font-style: italic; }
    .reviewer-meta { display: flex; align-items: center; gap: 12px; }
    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-muted);
      font-weight: 700;
    }

    /* 板块九：新闻资讯卡片 */
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--card-border);
      padding: 24px;
      height: 100%;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .news-card:hover {
      border-color: var(--primary-color);
      transform: translateY(-3px);
    }
    .news-tag {
      font-size: 11px;
      padding: 3px 8px;
      border-radius: 4px;
      background: #E0F2FE;
      color: #0369A1;
      font-weight: 600;
      display: inline-block;
      margin-bottom: 10px;
    }
    .news-title { font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; line-height: 1.4; }
    .news-snippet { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

    /* 板块十一：Accordion 手风琴重写 */
    .accordion-item {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: 8px !important;
      margin-bottom: 14px;
      overflow: hidden;
    }
    .accordion-title {
      font-size: 16px !important;
      font-weight: 700 !important;
      color: var(--text-main) !important;
      padding: 18px 22px !important;
      border: none !important;
      background: #FFFFFF !important;
    }
    .accordion-title:hover { background: #F8FAFC !important; color: var(--primary-color) !important; }
    .accordion-content {
      padding: 18px 22px !important;
      font-size: 14px !important;
      color: var(--text-muted) !important;
      line-height: 1.8 !important;
      border-top: 1px solid var(--card-border) !important;
    }

    /* 页脚 */
    .site-footer {
      background: #0B1120;
      color: #94A3B8;
      padding: 60px 0 24px;
      border-top: 1px solid #1E293B;
      font-size: 13px;
    }
    .site-footer h4 {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
    }
    .footer-links li { margin-bottom: 10px; }
    .footer-links a { color: #94A3B8; }
    .footer-links a:hover { color: var(--primary-color); }
    .footer-bottom {
      margin-top: 48px;
      padding-top: 24px;
      border-top: 1px solid #1E293B;
      text-align: center;
      font-size: 12px;
      color: #64748B;
    }

    /* 移动适配 */
    @media (max-width: 768px) {
      .hero-title { font-size: 28px; }
      .nav-links { display: none; }
      .stats-item { border-right: none; margin-bottom: 24px; }
      .section-spacing { padding: 50px 0; }
      .compare-table { font-size: 12px; }
      .compare-table th, .compare-table td { padding: 10px 8px; }
    }