/* roulang page: index */
:root {
      --primary-color: #0F4C81;
      --primary-dark: #0A3258;
      --secondary-teal: #00A3A6;
      --accent-blue: #2563EB;
      --dark-navy: #0B132B;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-light: #64748B;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --radius-sm: 4px;
      --radius-md: 8px;
      --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.05), 0 1px 2px -1px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 10px 15px -3px rgba(15, 76, 129, 0.08), 0 4px 6px -4px rgba(15, 76, 129, 0.04);
      --container-max: 1240px;
    }
    * {
      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: 1.6;
      color: var(--text-muted);
      background-color: var(--bg-white);
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }
    button, input, select, textarea {
      font-family: inherit;
    }
    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 顶部双行导航 */
    .top-bar {
      background-color: #F1F5F9;
      font-size: 13px;
      color: var(--text-light);
      border-bottom: 1px solid var(--border-color);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-left span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-right: 16px;
    }
    .top-bar-right a {
      color: var(--text-light);
      margin-left: 16px;
    }
    .top-bar-right a:hover {
      color: var(--primary-color);
    }
    .main-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 700;
      color: var(--primary-color);
      letter-spacing: -0.5px;
    }
    .logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-teal));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: bold;
      font-size: 18px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-item a {
      font-weight: 500;
      font-size: 15px;
      color: var(--text-main);
      padding: 8px 0;
      position: relative;
    }
    .nav-item a:hover {
      color: var(--primary-color);
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      background-color: var(--primary-color);
      color: #fff !important;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 14px;
      border: 1px solid var(--primary-color);
    }
    .nav-cta:hover {
      background-color: var(--primary-dark);
      border-color: var(--primary-dark);
    }
    /* 基础通用组件 */
    .section-wrap {
      padding: 88px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-light);
    }
    .section-dark {
      background-color: var(--dark-navy);
      color: #E2E8F0;
    }
    .section-head {
      margin-bottom: 56px;
    }
    .section-head.text-center {
      text-align: center;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--secondary-teal);
      background-color: rgba(0, 163, 166, 0.1);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }
    /* Hero 视频遮罩首屏 */
    .hero-section {
      position: relative;
      background-color: #0A1128;
      color: #FFFFFF;
      min-height: 620px;
      display: flex;
      align-items: center;
      overflow: hidden;
      padding: 80px 0;
    }
    .hero-bg-media {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.35;
      z-index: 1;
    }
    .hero-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at 70% 30%, rgba(0, 163, 166, 0.25) 0%, rgba(10, 17, 40, 0.85) 70%);
      z-index: 2;
    }
    .hero-content {
      position: relative;
      z-index: 3;
      max-width: 860px;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      font-size: 13px;
      margin-bottom: 24px;
      color: #E2E8F0;
    }
    .hero-title {
      font-size: 46px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }
    .hero-title span {
      background: linear-gradient(90deg, #FFFFFF, #38BDF8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 17px;
      line-height: 1.8;
      color: #CBD5E1;
      margin-bottom: 36px;
      max-width: 780px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      background-color: var(--secondary-teal);
      color: #FFFFFF;
      font-weight: 600;
      font-size: 15px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--secondary-teal);
      cursor: pointer;
    }
    .btn-main:hover {
      background-color: #00878A;
      border-color: #00878A;
    }
    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      background: rgba(255, 255, 255, 0.08);
      color: #FFFFFF;
      font-weight: 600;
      font-size: 15px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.25);
      cursor: pointer;
    }
    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.15);
      border-color: #FFFFFF;
    }
    .hero-video-trigger {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: #E2E8F0;
      font-size: 14px;
      cursor: pointer;
      margin-left: 8px;
    }
    .play-btn-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid rgba(255, 255, 255, 0.3);
      color: #38BDF8;
      font-size: 16px;
    }
    /* 核心定位介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .intro-media-card {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .intro-media-card img {
      width: 100%;
      height: 400px;
      object-fit: cover;
    }
    .intro-caption {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      background: linear-gradient(0deg, rgba(15, 23, 42, 0.9) 0%, transparent 100%);
      padding: 24px;
      color: #FFFFFF;
    }
    .intro-meta-badge {
      display: inline-block;
      font-size: 12px;
      background-color: var(--secondary-teal);
      padding: 2px 8px;
      border-radius: 2px;
      margin-bottom: 6px;
    }
    .intro-specs-list {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .intro-spec-item {
      display: flex;
      gap: 14px;
      align-items: flex-start;
    }
    .intro-spec-num {
      width: 28px;
      height: 28px;
      background: rgba(15, 76, 129, 0.1);
      color: var(--primary-color);
      font-weight: 700;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      flex-shrink: 0;
    }
    /* 卖点三连网格 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feat-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .feat-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
      border-color: rgba(15, 76, 129, 0.2);
    }
    .feat-icon-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 20px;
    }
    .feat-icon-symbol {
      width: 44px;
      height: 44px;
      background: rgba(15, 76, 129, 0.08);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-weight: bold;
      font-size: 18px;
    }
    .feat-tag {
      font-size: 11px;
      background: #F1F5F9;
      color: var(--text-light);
      padding: 3px 8px;
      border-radius: 2px;
    }
    .feat-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .feat-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }
    /* 产品矩阵 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .prod-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px 32px;
      position: relative;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }
    .prod-card.featured {
      border: 2px solid var(--primary-color);
      box-shadow: 0 12px 24px -6px rgba(15, 76, 129, 0.12);
    }
    .prod-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background-color: var(--primary-color);
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 4px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .prod-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .prod-sub {
      font-size: 13px;
      color: var(--secondary-teal);
      font-weight: 600;
      margin-bottom: 18px;
    }
    .prod-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 24px;
    }
    .prod-checklist {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .prod-check-item {
      font-size: 13px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-muted);
    }
    .prod-check-item::before {
      content: "✓";
      color: var(--secondary-teal);
      font-weight: bold;
    }
    .btn-outline {
      display: block;
      text-align: center;
      padding: 12px;
      border: 1px solid var(--primary-color);
      color: var(--primary-color);
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
    }
    .btn-outline:hover {
      background-color: var(--primary-color);
      color: #fff;
    }
    .btn-solid {
      display: block;
      text-align: center;
      padding: 12px;
      background-color: var(--primary-color);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
    }
    .btn-solid:hover {
      background-color: var(--primary-dark);
    }
    /* 技术底座深色区 */
    .arch-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .arch-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.25s ease;
    }
    .arch-card:hover {
      background: rgba(255, 255, 255, 0.07);
      border-color: var(--secondary-teal);
    }
    .arch-tech-code {
      font-family: monospace;
      font-size: 12px;
      color: var(--secondary-teal);
      margin-bottom: 12px;
      display: block;
    }
    .arch-title {
      font-size: 17px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 10px;
    }
    .arch-desc {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.65;
    }
    /* 场景演示板块 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .scen-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .scen-img {
      height: 200px;
      width: 100%;
      object-fit: cover;
    }
    .scen-body {
      padding: 24px;
    }
    .scen-pill {
      font-size: 11px;
      font-weight: 600;
      color: var(--primary-color);
      background-color: rgba(15, 76, 129, 0.08);
      padding: 3px 8px;
      border-radius: 2px;
      display: inline-block;
      margin-bottom: 10px;
    }
    .scen-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .scen-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* 标杆案例用户故事 */
    .case-banner {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 48px;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
      box-shadow: var(--shadow-sm);
    }
    .case-quote-tag {
      font-size: 13px;
      font-weight: 700;
      color: var(--secondary-teal);
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .case-main-text {
      font-size: 16px;
      color: var(--text-main);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .case-author-info {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .case-avatar-icon {
      width: 48px;
      height: 48px;
      background: var(--bg-light);
      border-radius: 50%;
      border: 2px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: var(--primary-color);
    }
    .case-metrics-side {
      background: var(--bg-light);
      border-radius: var(--radius-sm);
      padding: 32px;
      border-left: 4px solid var(--primary-color);
    }
    .case-stat-box {
      margin-bottom: 20px;
    }
    .case-stat-box:last-child {
      margin-bottom: 0;
    }
    .case-stat-num {
      font-size: 30px;
      font-weight: 800;
      color: var(--primary-color);
      line-height: 1.1;
    }
    .case-stat-lbl {
      font-size: 12px;
      color: var(--text-light);
      margin-top: 4px;
    }
    /* 关键业务效益数据条 */
    .metrics-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item {
      padding: 24px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }
    .metric-value {
      font-size: 40px;
      font-weight: 800;
      color: var(--primary-color);
      letter-spacing: -1px;
      margin-bottom: 6px;
    }
    .metric-unit {
      font-size: 20px;
      font-weight: 600;
      color: var(--secondary-teal);
    }
    .metric-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .metric-detail {
      font-size: 12px;
      color: var(--text-light);
      line-height: 1.5;
    }
    /* 时段排班卡 (蓝图板块) */
    .schedule-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .sched-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .sched-time {
      font-size: 13px;
      font-weight: 700;
      color: var(--secondary-teal);
      margin-bottom: 10px;
    }
    .sched-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .sched-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .sched-status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      font-weight: 600;
      color: #10B981;
    }
    .sched-status::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #10B981;
    }
    /* 专家团队板块 (蓝图板块) */
    .experts-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .expert-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .expert-avatar-box {
      width: 80px;
      height: 80px;
      background: var(--bg-light);
      border-radius: 50%;
      margin: 0 auto 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      font-weight: 700;
      color: var(--primary-color);
      border: 2px solid var(--border-color);
    }
    .expert-name {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .expert-role {
      font-size: 13px;
      color: var(--secondary-teal);
      font-weight: 600;
      margin-bottom: 14px;
    }
    .expert-bio {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* 用户评价与行业口碑 */
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .testi-stars {
      color: #F59E0B;
      font-size: 14px;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }
    .testi-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .testi-user-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .testi-user-corp {
      font-size: 12px;
      color: var(--text-light);
      margin-top: 2px;
    }
    /* 资讯看板 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-img {
      height: 190px;
      width: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-card-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .news-summary {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-color);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    /* 差异化对比选型表 */
    .compare-table-wrapper {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
    }
    .compare-table th {
      background-color: #F8FAFC;
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table td.highlight-col {
      background-color: rgba(15, 76, 129, 0.03);
      font-weight: 600;
      color: var(--primary-color);
    }
    .compare-table th.highlight-header {
      background-color: rgba(15, 76, 129, 0.08);
      color: var(--primary-color);
    }
    /* 异议拆解 FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question:hover {
      background-color: var(--bg-light);
    }
    .faq-toggle-icon {
      font-size: 18px;
      font-weight: normal;
      transition: transform 0.25s ease;
    }
    .faq-answer {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background-color: #FAFAFA;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      padding: 16px 24px 24px 24px;
      max-height: 300px;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    /* 交付保障条 */
    .guarantee-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .guar-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 24px 20px;
      display: flex;
      gap: 16px;
      align-items: flex-start;
      box-shadow: var(--shadow-sm);
    }
    .guar-icon {
      width: 36px;
      height: 36px;
      background: rgba(0, 163, 166, 0.1);
      color: var(--secondary-teal);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
    }
    .guar-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .guar-desc {
      font-size: 12px;
      color: var(--text-light);
      line-height: 1.5;
    }
    /* 预约演示表单转化区 */
    .booking-section {
      background: linear-gradient(135deg, #0F4C81 0%, #0A3258 100%);
      color: #FFFFFF;
      padding: 80px 0;
    }
    .booking-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .booking-info h2 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 20px;
    }
    .booking-info p {
      font-size: 15px;
      color: #CBD5E1;
      line-height: 1.7;
      margin-bottom: 28px;
    }
    .booking-perks {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .booking-perks li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: #F1F5F9;
    }
    .booking-perks li::before {
      content: "✓";
      color: var(--secondary-teal);
      font-weight: bold;
    }
    .booking-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 36px;
      box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
      color: var(--text-main);
    }
    .booking-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
    }
    .form-input {
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      background: #F8FAFC;
    }
    .form-input:focus {
      border-color: var(--primary-color);
      background: #FFFFFF;
    }
    .form-btn {
      margin-top: 10px;
      padding: 14px;
      background-color: var(--secondary-teal);
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }
    .form-btn:hover {
      background-color: #00878A;
    }
    .form-note {
      font-size: 11px;
      color: var(--text-light);
      text-align: center;
      margin-top: 4px;
    }
    /* 页脚工程 */
    .site-footer {
      background-color: #0A0F1D;
      color: #94A3B8;
      padding: 72px 0 32px 0;
      font-size: 13px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-brand h3 {
      font-size: 18px;
      color: #FFFFFF;
      margin-bottom: 14px;
      font-weight: 700;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 18px;
      max-width: 320px;
    }
    .footer-col h4 {
      font-size: 15px;
      color: #FFFFFF;
      margin-bottom: 18px;
      font-weight: 600;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }
    .footer-bottom a {
      color: #94A3B8;
      text-decoration: underline;
    }
    /* 底部固定转化条 */
    .sticky-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.08);
      z-index: 999;
      padding: 12px 0;
      transform: translateY(120%);
      transition: transform 0.3s ease;
    }
    .sticky-bar.visible {
      transform: translateY(0);
    }
    .sticky-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .sticky-info {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .sticky-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }
    .sticky-phone {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary-color);
    }
    .sticky-actions {
      display: flex;
      gap: 12px;
      align-items: center;
    }
    .btn-top {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      cursor: pointer;
    }
    /* 响应式断点 */
    @media (max-width: 1024px) {
      .features-grid, .products-grid, .scenarios-grid, .testi-grid, .news-grid, .schedule-grid, .experts-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .arch-grid, .metrics-bar-grid, .guarantee-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid, .case-banner, .booking-wrapper {
        grid-template-columns: 1fr;
      }
      .intro-media-card img {
        height: 320px;
      }
    }
    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        display: none;
      }
      .hero-title {
        font-size: 32px;
      }
      .section-wrap {
        padding: 56px 0;
      }
      .section-title {
        font-size: 26px;
      }
      .features-grid, .products-grid, .scenarios-grid, .testi-grid, .news-grid, .schedule-grid, .experts-grid, .arch-grid, .metrics-bar-grid, .guarantee-bar, .footer-grid {
        grid-template-columns: 1fr;
      }
      .booking-card {
        padding: 24px;
      }
      .sticky-title {
        display: none;
      }
    }