/* roulang page: index */
:root {
      --primary: #0E52D6;
      --primary-hover: #1E6BFF;
      --primary-soft: rgba(14, 82, 214, 0.08);
      --secondary: #00D492;
      --secondary-soft: rgba(0, 212, 146, 0.1);
      --accent: #FF6B35;
      --accent-soft: rgba(255, 107, 53, 0.1);
      --dark-bg: #0A1128;
      --dark-card: #101A38;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --bg-white: #FFFFFF;
      --bg-light: #F8FAFC;
      --bg-alt: #F1F5F9;
      --border-color: #E2E8F0;
      --border-dark: rgba(255, 255, 255, 0.1);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-full: 9999px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(14, 82, 214, 0.08);
      --shadow-hover: 0 20px 35px -10px rgba(14, 82, 214, 0.16);
      --shadow-dark: 0 20px 35px -10px rgba(0, 0, 0, 0.4);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-white);
      line-height: 1.75;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

    ul, ol {
      list-style: none;
    }

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

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部信息栏 */
    .top-bar {
      background-color: #060D20;
      color: #94A3B8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-info-left {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .top-info-left span i {
      color: var(--secondary);
      margin-right: 6px;
    }
    .top-info-right {
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .top-badge-state {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 2px 10px;
      border-radius: var(--radius-full);
      background: rgba(0, 212, 146, 0.15);
      color: var(--secondary);
      font-size: 12px;
    }
    .top-badge-state::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--secondary);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 8px var(--secondary);
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      height: 76px;
      display: flex;
      align-items: center;
      transition: var(--transition);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
    }
    .brand-logo-icon {
      width: 42px;
      height: 42px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 20px;
      box-shadow: 0 4px 12px rgba(14, 82, 214, 0.3);
    }
    .brand-logo-text {
      display: flex;
      flex-direction: column;
    }
    .brand-logo-text span:first-child {
      font-size: 19px;
      letter-spacing: -0.3px;
      line-height: 1.2;
    }
    .brand-logo-text span:last-child {
      font-size: 11px;
      color: var(--text-muted);
      font-weight: 500;
      letter-spacing: 0.5px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover,
    .nav-link.active {
      color: var(--primary);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
      border-radius: var(--radius-full);
    }
    .nav-link:hover::after,
    .nav-link.active::after {
      width: 100%;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 26px;
      border-radius: var(--radius-full);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), #1a62eb);
      color: #fff;
      box-shadow: 0 4px 14px rgba(14, 82, 214, 0.35);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-hover), var(--primary));
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(14, 82, 214, 0.45);
      color: #fff;
    }
    .btn-accent {
      background: linear-gradient(135deg, var(--accent), #ff8454);
      color: #fff;
      box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
    }
    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 107, 53, 0.45);
      color: #fff;
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.8);
      color: var(--text-main);
      border-color: var(--border-color);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #fff;
      transform: translateY(-2px);
    }
    .btn-dark-outline {
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .btn-dark-outline:hover {
      background: rgba(255, 255, 255, 0.18);
      border-color: #fff;
      color: #fff;
      transform: translateY(-2px);
    }

    /* 徽章与标签 */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      border-radius: var(--radius-full);
      font-size: 13px;
      font-weight: 600;
    }
    .badge-primary {
      background: var(--primary-soft);
      color: var(--primary);
      border: 1px solid rgba(14, 82, 214, 0.15);
    }
    .badge-secondary {
      background: var(--secondary-soft);
      color: #009667;
      border: 1px solid rgba(0, 212, 146, 0.25);
    }
    .badge-accent {
      background: var(--accent-soft);
      color: var(--accent);
      border: 1px solid rgba(255, 107, 53, 0.2);
    }

    /* 通用板块与排版 */
    section {
      padding: 90px 0;
      position: relative;
    }
    .section-title-wrap {
      max-width: 820px;
      margin: 0 auto 56px auto;
      text-align: center;
    }
    .section-title {
      font-size: 34px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.35;
      margin-top: 14px;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .bg-light-tone {
      background-color: var(--bg-light);
    }
    .bg-white-tone {
      background-color: var(--bg-white);
    }
    .bg-dark-tone {
      background: linear-gradient(180deg, #0A1128 0%, #101A38 100%);
      color: #fff;
    }

    /* 1. Hero 区域（品牌旗舰导航叠加风格） */
    .hero-section {
      position: relative;
      padding: 40px 0 100px 0;
      background: linear-gradient(180deg, #EDF3FC 0%, #F8FAFC 100%);
      overflow: hidden;
    }
    .hero-bg-visual {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 25px 50px -12px rgba(14, 82, 214, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.8);
      background-color: #0E1A38;
      min-height: 520px;
    }
    .hero-bg-visual img {
      width: 100%;
      height: 560px;
      object-fit: cover;
      opacity: 0.35;
      filter: saturate(1.2);
    }
    .hero-overlay-content {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      padding: 50px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      background: radial-gradient(circle at 15% 40%, rgba(10, 17, 40, 0.92) 0%, rgba(10, 17, 40, 0.7) 60%, rgba(10, 17, 40, 0.4) 100%);
      color: #fff;
    }
    .hero-top-strip {
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(10px);
      padding: 12px 24px;
      border-radius: var(--radius-full);
      border: 1px solid rgba(255, 255, 255, 0.12);
      flex-wrap: wrap;
      gap: 16px;
    }
    .hero-series-nav {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .hero-series-item {
      font-size: 14px;
      color: #CBD5E1;
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .hero-series-item.active {
      color: var(--secondary);
      font-weight: 600;
    }
    .hero-main-content {
      max-width: 800px;
      margin: 30px 0;
    }
    .hero-h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.8px;
      margin-bottom: 20px;
      color: #FFFFFF;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #60A5FA, var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-summary {
      font-size: 16px;
      line-height: 1.85;
      color: #E2E8F0;
      margin-bottom: 32px;
      max-width: 740px;
    }
    .hero-cta-group {
      display: flex;
      gap: 16px;
      align-items: center;
      flex-wrap: wrap;
    }
    .hero-tags-row {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      align-items: center;
      padding-top: 10px;
    }
    .hero-tag-chip {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-full);
      padding: 6px 16px;
      font-size: 13px;
      color: #F1F5F9;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 2. 客户案例（按蓝图） */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .case-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .case-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(14, 82, 214, 0.3);
    }
    .case-thumb {
      height: 220px;
      position: relative;
      overflow: hidden;
    }
    .case-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .case-card:hover .case-thumb img {
      transform: scale(1.05);
    }
    .case-badge-pos {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(10, 17, 40, 0.85);
      color: #fff;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      font-size: 12px;
      backdrop-filter: blur(4px);
    }
    .case-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .case-title {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
      line-height: 1.4;
    }
    .case-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .case-metric-box {
      background: var(--bg-light);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-left: 3px solid var(--primary);
    }
    .case-metric-num {
      font-size: 18px;
      font-weight: 800;
      color: var(--primary);
    }
    .case-metric-label {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 3. 结果数据量化统计带（按蓝图） */
    .metrics-strip {
      background: linear-gradient(135deg, #091A44 0%, #0E2A68 100%);
      color: #fff;
      padding: 60px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
    }
    .metric-card {
      text-align: center;
      padding: 10px;
      position: relative;
    }
    .metric-card:not(:last-child)::after {
      content: "";
      position: absolute;
      right: 0;
      top: 20%;
      height: 60%;
      width: 1px;
      background: rgba(255, 255, 255, 0.15);
    }
    .metric-val {
      font-size: 46px;
      font-weight: 800;
      line-height: 1;
      margin-bottom: 8px;
      background: linear-gradient(90deg, #FFFFFF, var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-feature-settings: "tnum";
    }
    .metric-val-unit {
      font-size: 20px;
      font-weight: 600;
      margin-left: 2px;
    }
    .metric-name {
      font-size: 15px;
      color: #E2E8F0;
      font-weight: 600;
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 12px;
      color: #94A3B8;
    }

    /* 4. 前后对比（按蓝图） */
    .compare-container {
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .compare-header-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      background: #F1F5F9;
      font-size: 18px;
      font-weight: 700;
      text-align: center;
      padding: 18px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .compare-header-row div:first-child {
      color: #64748B;
    }
    .compare-header-row div:last-child {
      color: var(--primary);
    }
    .compare-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      border-bottom: 1px solid var(--border-color);
      padding: 24px;
      align-items: center;
    }
    .compare-row:last-child {
      border-bottom: none;
    }
    .compare-row:hover {
      background-color: #FAFCFF;
    }
    .compare-col-old {
      padding-right: 30px;
      border-right: 1px dashed var(--border-color);
      color: #64748B;
    }
    .compare-col-old h4 {
      font-size: 16px;
      color: #475569;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .compare-col-new {
      padding-left: 30px;
    }
    .compare-col-new h4 {
      font-size: 16px;
      color: var(--primary);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .compare-badge {
      display: inline-block;
      font-size: 11px;
      padding: 2px 8px;
      border-radius: var(--radius-full);
      font-weight: 600;
    }

    /* 5. 核心方法说明与物联网架构（按蓝图） */
    .method-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .method-content-col {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .method-step-card {
      display: flex;
      gap: 20px;
      padding: 20px;
      border-radius: var(--radius-md);
      background: #fff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .method-step-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateX(6px);
    }
    .method-step-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: var(--primary-soft);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      flex-shrink: 0;
    }
    .method-step-info h4 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .method-step-info p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .method-visual-col {
      position: relative;
    }
    .method-visual-img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--border-color);
      overflow: hidden;
      max-height: 480px;
    }
    .method-visual-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .method-badge-floating {
      position: absolute;
      bottom: 24px;
      left: 24px;
      background: rgba(10, 17, 40, 0.9);
      backdrop-filter: blur(8px);
      color: #fff;
      padding: 16px 20px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.15);
      max-width: 320px;
    }

    /* 6. 场景矩阵板块（扩充内容板块） */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .service-card {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 34px 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(14, 82, 214, 0.25);
    }
    .service-icon-box {
      width: 60px;
      height: 60px;
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(14, 82, 214, 0.1), rgba(0, 212, 146, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 26px;
      color: var(--primary);
      margin-bottom: 22px;
    }
    .service-card h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text-main);
    }
    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .service-features-list {
      border-top: 1px solid var(--bg-alt);
      padding-top: 16px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .service-features-list li {
      font-size: 13px;
      color: #475569;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .service-features-list li i {
      color: var(--secondary);
      font-size: 12px;
    }

    /* 7. 产品中心（参数微标签对比卡片） */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .product-card {
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .product-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }
    .product-thumb {
      height: 240px;
      background: var(--bg-alt);
      overflow: hidden;
      position: relative;
    }
    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .product-card:hover .product-thumb img {
      transform: scale(1.06);
    }
    .product-body {
      padding: 28px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-tag {
      font-size: 12px;
      color: var(--primary);
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 8px;
    }
    .product-name {
      font-size: 21px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .product-intro {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .product-specs {
      background: var(--bg-light);
      border-radius: var(--radius-sm);
      padding: 16px;
      margin-bottom: 24px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .spec-item {
      display: flex;
      justify-content: space-between;
      font-size: 13px;
    }
    .spec-key {
      color: var(--text-muted);
    }
    .spec-val {
      color: var(--text-main);
      font-weight: 600;
    }

    /* 8. 深色科技理念与数据中台架构展示 */
    .dark-concept-box {
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, #0d1633, #070d1e);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 60px;
      box-shadow: var(--shadow-dark);
    }
    .concept-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .concept-text h3 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 20px;
      color: #fff;
    }
    .concept-text p {
      color: #94A3B8;
      font-size: 15px;
      line-height: 1.8;
      margin-bottom: 30px;
    }
    .cloud-layers {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .layer-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 16px 20px;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      gap: 16px;
      transition: var(--transition);
    }
    .layer-card:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--secondary);
      transform: translateX(4px);
    }
    .layer-badge {
      padding: 4px 12px;
      background: rgba(0, 212, 146, 0.15);
      color: var(--secondary);
      border-radius: var(--radius-full);
      font-size: 12px;
      font-weight: 700;
      min-width: 68px;
      text-align: center;
    }
    .layer-detail h5 {
      color: #fff;
      font-size: 15px;
      margin-bottom: 2px;
    }
    .layer-detail p {
      color: #94A3B8;
      font-size: 12px;
      margin: 0;
    }

    /* 9. 部署交付工作流 */
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: var(--transition);
    }
    .step-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }
    .step-idx {
      font-size: 32px;
      font-weight: 900;
      color: #E2E8F0;
      line-height: 1;
      margin-bottom: 16px;
      transition: var(--transition);
    }
    .step-card:hover .step-idx {
      color: var(--primary);
    }
    .step-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .step-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 10. 用户评价与实操口碑 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .review-card {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-quote {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.8;
      margin-bottom: 24px;
      position: relative;
    }
    .review-quote::before {
      content: "\201C";
      font-size: 40px;
      color: var(--primary-soft);
      position: absolute;
      top: -20px;
      left: -10px;
      font-family: serif;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--bg-alt);
      padding-top: 16px;
    }
    .author-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: var(--bg-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 700;
      font-size: 16px;
    }
    .author-info h5 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 11. 资讯动态摘要（按蓝图） */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .news-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .news-thumb {
      height: 190px;
      overflow: hidden;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .news-card:hover .news-thumb img {
      transform: scale(1.05);
    }
    .news-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-meta {
      display: flex;
      gap: 12px;
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 10px;
    }
    .news-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.45;
      color: var(--text-main);
    }
    .news-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .news-more-btn {
      color: var(--primary);
      font-size: 14px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 12. 异议拆解 / FAQ 手风琴（按蓝图） */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 22px 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      user-select: none;
    }
    .faq-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--bg-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      color: var(--primary);
      transition: var(--transition);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #fff;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out, padding 0.35s ease;
      background: #FAFCFF;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.8;
      padding: 0 28px;
    }
    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 0 28px 22px 28px;
    }

    /* 13. 合作伙伴生态带 */
    .partners-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 20px;
      align-items: center;
    }
    .partner-pill {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px;
      text-align: center;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-muted);
      transition: var(--transition);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 68px;
    }
    .partner-pill:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }

    /* 14. 咨询入口 / 方案预约 CTA（按蓝图） */
    .cta-card-wrap {
      background: linear-gradient(135deg, #0A1128 0%, #15224A 100%);
      border-radius: var(--radius-lg);
      padding: 60px;
      color: #fff;
      box-shadow: var(--shadow-dark);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .cta-inner-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .cta-info h3 {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 20px;
    }
    .cta-info p {
      font-size: 15px;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 30px;
    }
    .cta-contact-pills {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .cta-pill-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .cta-pill-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: rgba(255, 255, 255, 0.08);
      color: var(--secondary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
    }
    .cta-form-box {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 36px;
      color: var(--text-main);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    }
    .cta-form-box h4 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 20px;
      text-align: center;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: var(--transition);
      background-color: #F8FAFC;
    }
    .form-control:focus {
      border-color: var(--primary);
      background-color: #fff;
      box-shadow: 0 0 0 3px rgba(14, 82, 214, 0.15);
    }
    .form-submit-btn {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, var(--primary), #1a62eb);
      color: #fff;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 4px 12px rgba(14, 82, 214, 0.3);
    }
    .form-submit-btn:hover {
      background: linear-gradient(135deg, var(--primary-hover), var(--primary));
    }
    .form-privacy-note {
      font-size: 12px;
      color: var(--text-light);
      margin-top: 12px;
      text-align: center;
    }

    /* 页脚 */
    .site-footer {
      background: #060B18;
      color: #94A3B8;
      padding: 80px 0 30px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 50px;
      margin-bottom: 60px;
    }
    .footer-brand h4 {
      color: #fff;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-brand p {
      line-height: 1.8;
      font-size: 14px;
      color: #94A3B8;
      margin-bottom: 20px;
    }
    .footer-col h5 {
      color: #fff;
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 10px;
    }
    .footer-col h5::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--primary);
    }
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links a:hover {
      color: var(--secondary);
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }
    .footer-icp {
      display: flex;
      gap: 20px;
      align-items: center;
      flex-wrap: wrap;
    }

    /* 移动端抽屉导航与响应式 */
    @media (max-width: 1024px) {
      .case-grid,
      .services-grid,
      .products-grid,
      .news-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 30px;
      }
      .metric-card:nth-child(2)::after {
        display: none;
      }
      .timeline-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .partners-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .concept-inner,
      .cta-inner-grid,
      .method-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        box-shadow: 0 20px 30px rgba(0, 0, 0, 0.1);
        flex-direction: column;
        padding: 24px;
        gap: 18px;
        transform: translateY(-150%);
        transition: transform 0.3s ease-in-out;
        z-index: 999;
      }
      .nav-menu.open {
        transform: translateY(0);
      }
      .nav-actions .btn {
        display: none;
      }
      .hero-h1 {
        font-size: 30px;
      }
      .hero-bg-visual {
        min-height: 600px;
      }
      .hero-overlay-content {
        padding: 24px;
      }
      .hero-series-nav {
        flex-wrap: wrap;
        gap: 10px;
      }
      .section-title {
        font-size: 26px;
      }
      .case-grid,
      .services-grid,
      .products-grid,
      .news-grid,
      .reviews-grid,
      .timeline-steps,
      .partners-grid {
        grid-template-columns: 1fr;
      }
      .compare-header-row,
      .compare-row {
        grid-template-columns: 1fr;
        gap: 16px;
      }
      .compare-col-old {
        border-right: none;
        border-bottom: 1px dashed var(--border-color);
        padding-right: 0;
        padding-bottom: 16px;
      }
      .compare-col-new {
        padding-left: 0;
      }
      .cta-card-wrap {
        padding: 30px 20px;
      }
      .cta-form-box {
        padding: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }