/* roulang page: index */
:root {
      --primary: #0f62fe;
      --primary-hover: #0043ce;
      --primary-light: #edf5ff;
      --accent: #00b4d8;
      --dark: #0f172a;
      --dark-card: #1e293b;
      --text: #1e293b;
      --text-muted: #64748b;
      --bg: #f8fafc;
      --bg-alt: #ffffff;
      --border: #e2e8f0;
      --radius-sm: 6px;
      --radius: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 8px 24px rgba(15,23,42,0.08);
      --shadow-lg: 0 20px 40px rgba(15,23,42,0.12);
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      color: var(--text);
      background-color: var(--bg);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--dark);
      display: flex;
      align-items: center;
      gap: 10px;
      letter-spacing: -0.5px;
    }

    .logo-badge {
      background: var(--primary);
      color: #fff;
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }

    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
    }

    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }

    .nav-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      background: var(--primary);
      color: #fff !important;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      font-weight: 600;
      box-shadow: 0 4px 14px rgba(15, 98, 254, 0.25);
    }

    .nav-btn:hover {
      background: var(--primary-hover);
      transform: translateY(-1px);
    }

    /* Section 通用规范 */
    .section {
      padding: 90px 0;
      position: relative;
    }

    .section-alt {
      background: #ffffff;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .section-dark {
      background: #0b1329;
      color: #f1f5f9;
    }

    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 54px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-dark .section-tag {
      background: rgba(15, 98, 254, 0.25);
      color: #60a5fa;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: inherit;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .section-dark .section-desc {
      color: #94a3b8;
    }

    /* Hero：双栏门户，左主张右快捷入口网格 */
    .hero-section {
      position: relative;
      padding: 80px 0 100px;
      background-image: linear-gradient(135deg, rgba(248, 250, 252, 0.94) 0%, rgba(237, 245, 255, 0.92) 100%), url('/assets/images/ccda7c3edb3664d9.jpg');
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid var(--border);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 2.85rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--dark);
      margin-bottom: 22px;
      letter-spacing: -0.8px;
    }

    .hero-content h1 span {
      background: linear-gradient(120deg, #0f62fe 0%, #00b4d8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-intro {
      font-size: 1.12rem;
      line-height: 1.8;
      color: #475569;
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
      margin-bottom: 40px;
    }

    .btn-main {
      padding: 14px 30px;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      font-size: 1rem;
      border-radius: var(--radius-sm);
      box-shadow: 0 8px 20px rgba(15, 98, 254, 0.28);
    }

    .btn-main:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
    }

    .btn-secondary {
      padding: 14px 28px;
      background: #ffffff;
      color: var(--dark);
      font-weight: 600;
      font-size: 1rem;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

    .btn-secondary:hover {
      background: #f1f5f9;
    }

    .hero-metrics {
      display: flex;
      gap: 36px;
      border-top: 1px solid rgba(226, 232, 240, 0.8);
      padding-top: 24px;
    }

    .metric-num {
      font-size: 1.7rem;
      font-weight: 800;
      color: var(--dark);
      line-height: 1;
    }

    .metric-label {
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-top: 6px;
    }

    /* 右侧快捷入口网格 */
    .hero-quick-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(226, 232, 240, 0.9);
    }

    .quick-card {
      padding: 20px;
      background: #f8fafc;
      border-radius: var(--radius);
      border: 1px solid #e2e8f0;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .quick-card:hover {
      background: #ffffff;
      border-color: var(--primary);
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .quick-icon {
      width: 42px;
      height: 42px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin-bottom: 12px;
      font-size: 1.1rem;
    }

    .quick-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 6px;
    }

    .quick-card p {
      font-size: 0.82rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 12px;
    }

    .quick-link {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 服务亮点 */
    .highlights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .highlight-card {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 34px 28px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }

    .highlight-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: #cbd5e1;
    }

    .highlight-badge {
      display: inline-block;
      font-size: 0.72rem;
      font-weight: 700;
      padding: 3px 10px;
      background: #f1f5f9;
      color: var(--primary);
      border-radius: 4px;
      margin-bottom: 18px;
    }

    .highlight-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--dark);
    }

    .highlight-text {
      font-size: 0.92rem;
      color: #64748b;
      line-height: 1.7;
    }

    /* 时段卡（工程排期与敏捷响应） */
    .schedule-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .schedule-card {
      background: #f8fafc;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 26px 22px;
      position: relative;
      transition: var(--transition);
    }

    .schedule-card.current {
      background: #ffffff;
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }

    .schedule-card.current::before {
      content: '快速通道';
      position: absolute;
      top: 14px;
      right: 14px;
      font-size: 0.7rem;
      font-weight: 700;
      background: #fee2e2;
      color: #ef4444;
      padding: 2px 8px;
      border-radius: 4px;
    }

    .schedule-phase {
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 6px;
    }

    .schedule-time {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 10px;
    }

    .schedule-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 专家/研发团队 */
    .team-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .team-card {
      background: #ffffff;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .team-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .team-img-wrap {
      height: 200px;
      background: #e2e8f0;
      overflow: hidden;
    }

    .team-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .team-card:hover .team-img-wrap img {
      transform: scale(1.05);
    }

    .team-info {
      padding: 22px;
    }

    .team-role {
      font-size: 0.75rem;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 4px;
    }

    .team-name {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .team-bio {
      font-size: 0.84rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 评价保障与合规资质 */
    .guarantee-wrap {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .guarantee-box {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius);
      padding: 30px;
    }

    .guarantee-box h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #fff;
    }

    .guarantee-box p {
      font-size: 0.9rem;
      color: #94a3b8;
      line-height: 1.7;
    }

    /* 资讯中心 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .news-card {
      background: #ffffff;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .news-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }

    .news-cover {
      height: 180px;
      overflow: hidden;
    }

    .news-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .news-meta {
      font-size: 0.78rem;
      color: #94a3b8;
      margin-bottom: 8px;
    }

    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark);
      line-height: 1.45;
      margin-bottom: 10px;
    }

    .news-summary {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 16px;
    }

    /* 预约表单（需求评估与定制通道） */
    .booking-section {
      background: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
    }

    .booking-card {
      max-width: 860px;
      margin: 0 auto;
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 48px;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border);
    }

    .booking-form {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .form-group.full {
      grid-column: span 2;
    }

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .form-group input, 
    .form-group select, 
    .form-group textarea {
      width: 100%;
      padding: 13px 16px;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      background: #f8fafc;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-group input:focus, 
    .form-group select:focus, 
    .form-group textarea:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(15, 98, 254, 0.15);
    }

    .submit-btn {
      width: 100%;
      padding: 16px;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      font-size: 1.05rem;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 8px 20px rgba(15, 98, 254, 0.3);
    }

    .submit-btn:hover {
      background: var(--primary-hover);
    }

    /* 扩展板块通用样式（满足10-20板块蓝图） */
    .bento-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .bento-card {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 30px;
      border: 1px solid var(--border);
    }

    .bento-card.span-2 {
      grid-column: span 2;
    }

    .price-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .price-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 38px 28px;
      position: relative;
      text-align: center;
      transition: var(--transition);
    }

    .price-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-lg);
      transform: scale(1.03);
    }

    .price-title {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .price-val {
      font-size: 2.6rem;
      font-weight: 900;
      color: var(--dark);
      margin: 18px 0;
    }

    .price-val small {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
    }

    .price-list {
      list-style: none;
      text-align: left;
      margin: 24px 0 32px;
      font-size: 0.88rem;
      color: #475569;
    }

    .price-list li {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .price-list li::before {
      content: '✓';
      color: #10b981;
      font-weight: 800;
    }

    /* 成果数据条 */
    .stats-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .stat-item {
      padding: 30px;
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border);
    }

    .stat-digit {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 8px;
    }

    .stat-caption {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 合作生态墙 */
    .partner-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }

    .partner-logo-item {
      background: #ffffff;
      border: 1px solid var(--border);
      padding: 18px;
      border-radius: var(--radius-sm);
      text-align: center;
      font-size: 0.88rem;
      font-weight: 700;
      color: #475569;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 64px;
    }

    /* 页脚 */
    .footer {
      background: #090e1a;
      color: #94a3b8;
      padding: 70px 0 30px;
      border-top: 1px solid #1e293b;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 50px;
      margin-bottom: 50px;
    }

    .footer-brand h4 {
      font-size: 1.3rem;
      font-weight: 800;
      color: #f8fafc;
      margin-bottom: 16px;
    }

    .footer-desc {
      font-size: 0.88rem;
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .footer-col h5 {
      font-size: 1rem;
      font-weight: 700;
      color: #f1f5f9;
      margin-bottom: 18px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
      font-size: 0.88rem;
    }

    .footer-links a:hover {
      color: #ffffff;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: #64748b;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .highlights-grid,
      .bento-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .schedule-grid,
      .team-grid,
      .stats-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .partner-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    @media (max-width: 768px) {
      .section {
        padding: 60px 0;
      }
      .hero-content h1 {
        font-size: 2.1rem;
      }
      .hero-quick-grid {
        grid-template-columns: 1fr;
      }
      .highlights-grid,
      .bento-grid,
      .news-grid,
      .price-grid,
      .guarantee-wrap {
        grid-template-columns: 1fr;
      }
      .booking-form {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .booking-card {
        padding: 28px 20px;
      }
      .nav-links {
        display: none;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .hero-metrics {
        flex-wrap: wrap;
        gap: 20px;
      }
      .schedule-grid,
      .team-grid,
      .stats-strip,
      .partner-grid {
        grid-template-columns: 1fr;
      }
    }