/* ===== 解决方案卡片样式 ===== */
    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      margin: 60px 0 30px;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .section-title i {
      color: #3b82f6;
    }

    .sol-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin: 40px 0;
    }

    .sol-card {
      background: white;
      border-radius: 36px;
      padding: 36px 28px;
      box-shadow: 0 15px 35px -15px rgba(0,47,91,0.08);
      transition: all 0.2s ease;
      border: 1px solid #ecf3fa;
      display: flex;
      flex-direction: column;
    }

    .sol-card:hover {
      transform: translateY(-8px);
      border-color: #b9d3ff;
      box-shadow: 0 28px 40px -18px #3b82f6b0;
    }

    .sol-icon {
      background: #eef2ff;
      width: 80px;
      height: 80px;
      border-radius: 30px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 28px;
      color: #3b82f6;
      font-size: 2.5rem;
    }

    .sol-card h3 {
      font-size: 2rem;
      font-weight: 600;
      margin-bottom: 16px;
    }

    .sol-desc {
      color: #475569;
      line-height: 1.6;
      margin-bottom: 28px;
      font-size: 1.05rem;
    }

    .feature-badge {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: 20px 0 25px;
    }
    .feature-badge span {
      background: #f1f5f9;
      border-radius: 40px;
      padding: 6px 16px;
      font-size: 0.9rem;
      font-weight: 500;
      color: #1e293b;
    }

    .case-link {
      margin-top: auto;
      color: #3b82f6;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
      border-top: 1px dashed #d9e2ef;
      padding-top: 24px;
    }

    .case-link i {
      transition: transform 0.15s;
    }
    .case-link:hover i {
      transform: translateX(4px);
    }

    /* ===== 行业深度方案区块 ===== */
    .deep-solution {
      background: #ffffff;
      border-radius: 60px;
      padding: 56px 48px;
      margin: 70px 0;
      box-shadow: 0 25px 40px -25px rgba(0,35,70,0.12);
      border: 1px solid #e2ecfc;
    }

    .deep-header {
      display: flex;
      align-items: center;
      gap: 20px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }
    .deep-header h2 {
      font-size: 2.4rem;
      font-weight: 700;
      line-height: 1.2;
    }
    .deep-header .tag {
      background: #2563eb;
      color: white;
      border-radius: 60px;
      padding: 8px 30px;
      font-weight: 600;
    }

    .deep-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 40px;
    }
    .deep-item {
      background: #f6faff;
      border-radius: 32px;
      padding: 32px 24px;
    }
    .deep-item i {
      font-size: 2.2rem;
      color: #3b82f6;
      margin-bottom: 24px;
    }
    .deep-item h4 {
      font-size: 1.5rem;
      margin-bottom: 16px;
    }
    .deep-item p {
      color: #334155;
    }

    /* ===== 客户案例 ===== */
    .case-showcase {
      display: flex;
      flex-wrap: wrap;
      gap: 40px;
      background: linear-gradient(115deg, #F0F7FF 0%, #ffffff 80%);
      border-radius: 48px;
      padding: 56px 48px;
      margin: 70px 0;
      align-items: center;
    }
    .case-info {
      flex: 2 1 300px;
    }
    .case-info h3 {
      font-size: 2rem;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .case-metrics {
      display: flex;
      gap: 40px;
      margin: 30px 0;
    }
    .metric {
      text-align: center;
    }
    .metric .num {
      font-size: 2.4rem;
      font-weight: 700;
      color: #0f1825;
    }
    .metric .label {
      color: #475569;
    }
    .case-logo-cloud {
      flex: 1 1 200px;
      display: flex;
      flex-wrap: wrap;
      gap: 30px;
      justify-content: center;
    }
    .case-logo-cloud i {
      font-size: 3.2rem;
      color: #94a3b8;
      opacity: 0.6;
      transition: opacity 0.2s;
    }
    .case-logo-cloud i:hover { opacity: 1; color:#3b82f6; }

    /* ===== 按需组合方案 ===== */
    .bundle-section {
      background: #111c2e;
      color: white;
      border-radius: 60px;
      padding: 56px 48px;
      margin: 80px 0;
    }
    .bundle-section h2 {
      font-size: 2.5rem;
      margin-bottom: 20px;
    }
    .bundle-section .sub {
      color: #b0c4de;
      font-size: 1.2rem;
      max-width: 600px;
      margin-bottom: 48px;
    }
    .bundle-cards {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px,1fr));
      gap: 28px;
    }
    .bundle-card {
      background: rgba(255,255,255,0.05);
      backdrop-filter: blur(8px);
      border: 1px solid #2b3b56;
      border-radius: 36px;
      padding: 36px 28px;
    }
    .bundle-card .price {
      font-size: 2.2rem;
      font-weight: 700;
      color: white;
      margin: 20px 0;
    }
    .bundle-card ul {
      list-style: none;
      margin: 24px 0;
    }
    .bundle-card li {
      padding: 8px 0;
      border-bottom: 1px solid #253546;
    }
    .bundle-card li i {
      color: #3b82f6;
      margin-right: 10px;
    }
    .btn-outline-light {
      border: 1.5px solid #b0c4de;
      color: white;
      padding: 12px 28px;
      border-radius: 40px;
      text-decoration: none;
      display: inline-block;
      font-weight: 600;
    }

    /* ===== FAQ ===== */
    .faq-grid-sol {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
      gap: 25px;
      margin: 40px 0 80px;
    }
    .faq-sol-item {
      background: #f1f6fd;
      border-radius: 28px;
      padding: 30px;
    }
    .faq-sol-item h4 {
      font-size: 1.3rem;
      margin-bottom: 12px;
    }