/* roulang page: index */
/* CSS 设计变量系统：深色科技蓝 + 玻璃拟态 + 发光高光 */
    :root {
      --bg-main: #060B18;
      --bg-gradient: radial-gradient(circle at 50% 0%, #10214a 0%, #060b18 70%);
      --bg-surface: rgba(16, 28, 58, 0.65);
      --bg-surface-hover: rgba(22, 38, 78, 0.85);
      --bg-card: rgba(13, 23, 48, 0.6);
      --primary-cyan: #00D2FF;
      --primary-blue: #2A7BFF;
      --accent-glow: rgba(0, 210, 255, 0.45);
      --border-color: rgba(255, 255, 255, 0.08);
      --border-hover: rgba(0, 210, 255, 0.4);
      --text-white: #FFFFFF;
      --text-body: #C2D1E5;
      --text-muted: #7B8DA8;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      --shadow-glow: 0 0 25px rgba(0, 210, 255, 0.45);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      --container-max: 1280px;
    }

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

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

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

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

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

    ul, ol {
      list-style: none;
    }

    button, input, select, textarea {
      font: inherit;
      outline: none;
    }

    /* 容器布局 */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    .section-wrap {
      padding: 96px 0;
      position: relative;
    }

    .section-wrap-alt {
      background: rgba(8, 15, 33, 0.6);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px;
    }

    .section-tag {
      display: inline-block;
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.05em;
      color: var(--primary-cyan);
      background: rgba(0, 210, 255, 0.1);
      border: 1px solid rgba(0, 210, 255, 0.25);
      margin-bottom: 16px;
    }

    .section-title {
      font-size: 2.25rem;
      font-weight: 700;
      color: var(--text-white);
      line-height: 1.35;
      margin-bottom: 18px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-body);
      line-height: 1.8;
    }

    /* 按钮与发光动效 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 28px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      transition: var(--transition);
      border: none;
      min-height: 48px;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--primary-blue) 100%);
      color: #040914;
      box-shadow: 0 4px 20px rgba(0, 210, 255, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-glow);
      color: #000;
    }

    .btn-outline {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-white);
      border: 1px solid var(--border-color);
      backdrop-filter: blur(8px);
    }

    .btn-outline:hover {
      background: rgba(0, 210, 255, 0.12);
      border-color: var(--primary-cyan);
      color: var(--primary-cyan);
      transform: translateY(-2px);
    }

    /* 玻璃拟态基础卡片 */
    .glass-card {
      background: var(--bg-surface);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }

    .glass-card:hover {
      border-color: var(--border-hover);
      transform: translateY(-4px);
      background: var(--bg-surface-hover);
    }

    /* 顶部辅助条 */
    .top-bar {
      background: rgba(4, 8, 18, 0.85);
      border-bottom: 1px solid var(--border-color);
      font-size: 0.85rem;
      color: var(--text-muted);
      padding: 8px 0;
    }

    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .top-status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #00FFB2;
    }

    .status-dot {
      width: 8px;
      height: 8px;
      background: #00FFB2;
      border-radius: 50%;
      box-shadow: 0 0 8px #00FFB2;
    }

    /* 主导航 */
    .sticky-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(6, 11, 24, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-icon {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--primary-cyan), var(--primary-blue));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #040914;
      font-weight: 900;
      font-size: 1.25rem;
      box-shadow: 0 0 16px rgba(0, 210, 255, 0.5);
    }

    .brand-text {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-white);
      letter-spacing: -0.02em;
    }

    .brand-text span {
      background: linear-gradient(90deg, var(--primary-cyan), var(--primary-blue));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-body);
      padding: 8px 0;
      position: relative;
    }

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

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary-cyan);
      transition: var(--transition);
    }

    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--text-white);
      font-size: 1.5rem;
      cursor: pointer;
    }

    /* 1. 首屏 Hero */
    .hero-section {
      padding: 90px 0 110px;
      position: relative;
      overflow: hidden;
      background: radial-gradient(circle at 80% 20%, rgba(42, 123, 255, 0.18) 0%, transparent 60%);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 18px;
      background: rgba(0, 210, 255, 0.08);
      border: 1px solid rgba(0, 210, 255, 0.25);
      border-radius: 40px;
      margin-bottom: 24px;
    }

    .hero-badge-tag {
      font-size: 0.75rem;
      padding: 2px 8px;
      background: var(--primary-cyan);
      color: #040914;
      font-weight: 700;
      border-radius: 4px;
    }

    .hero-badge-text {
      font-size: 0.88rem;
      color: var(--text-white);
    }

    .hero-title {
      font-size: 3.2rem;
      line-height: 1.22;
      font-weight: 800;
      color: var(--text-white);
      margin-bottom: 22px;
      letter-spacing: -0.02em;
    }

    .hero-title .highlight {
      background: linear-gradient(135deg, #00D2FF 0%, #2A7BFF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-intro {
      font-size: 1.12rem;
      color: var(--text-body);
      line-height: 1.85;
      margin-bottom: 34px;
      max-width: 640px;
    }

    .hero-actions {
      display: flex;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }

    .hero-stats-row {
      display: flex;
      gap: 36px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }

    .hero-stat-item h4 {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--primary-cyan);
      line-height: 1.2;
    }

    .hero-stat-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 首屏右侧系统操作看板切片 */
    .hero-dashboard-card {
      background: rgba(13, 24, 52, 0.75);
      backdrop-filter: blur(20px);
      border: 1px solid rgba(0, 210, 255, 0.3);
      border-radius: var(--radius-xl);
      padding: 28px;
      box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8), var(--shadow-glow);
      position: relative;
    }

    .dash-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 18px;
      margin-bottom: 20px;
    }

    .dash-status {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      color: var(--text-white);
      font-weight: 600;
    }

    .dash-badge {
      font-size: 0.75rem;
      background: rgba(0, 210, 255, 0.15);
      color: var(--primary-cyan);
      padding: 3px 10px;
      border-radius: 20px;
    }

    .dash-inventory-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 20px;
    }

    .inventory-kpi-box {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-color);
      padding: 16px;
      border-radius: var(--radius-md);
    }

    .inventory-kpi-label {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 6px;
    }

    .inventory-kpi-val {
      font-size: 1.45rem;
      font-weight: 700;
      color: var(--text-white);
    }

    .inventory-kpi-val.trend-up {
      color: #00FFB2;
    }

    .dash-stream-list {
      background: rgba(0, 0, 0, 0.2);
      border-radius: var(--radius-md);
      padding: 14px;
    }

    .stream-title {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 10px;
      display: flex;
      justify-content: space-between;
    }

    .stream-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.82rem;
      padding: 8px 0;
      border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
    }

    .stream-item:last-child {
      border-bottom: none;
    }

    .stream-tag {
      padding: 2px 6px;
      border-radius: 4px;
      font-size: 0.72rem;
    }

    .tag-in {
      background: rgba(0, 255, 178, 0.15);
      color: #00FFB2;
    }

    .tag-out {
      background: rgba(255, 90, 95, 0.15);
      color: #FF5A5F;
    }

    /* 2. 品牌与产品架构概览 */
    .arch-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .arch-card {
      position: relative;
      overflow: hidden;
    }

    .arch-icon {
      width: 52px;
      height: 52px;
      background: rgba(0, 210, 255, 0.1);
      border: 1px solid rgba(0, 210, 255, 0.3);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 22px;
      color: var(--primary-cyan);
    }

    .arch-title {
      font-size: 1.35rem;
      color: var(--text-white);
      margin-bottom: 14px;
      font-weight: 700;
    }

    .arch-text {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 20px;
    }

    .arch-list {
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    .arch-list li {
      font-size: 0.86rem;
      color: var(--text-muted);
      margin-bottom: 8px;
      position: relative;
      padding-left: 18px;
    }

    .arch-list li::before {
      content: '✓';
      position: absolute;
      left: 0;
      color: var(--primary-cyan);
      font-weight: bold;
    }

    .compliance-bar {
      margin-top: 48px;
      background: rgba(42, 123, 255, 0.08);
      border: 1px solid rgba(42, 123, 255, 0.25);
      border-radius: var(--radius-lg);
      padding: 20px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .compliance-info {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .compliance-icon {
      font-size: 2rem;
      color: var(--primary-cyan);
    }

    .compliance-title {
      font-size: 1rem;
      color: var(--text-white);
      font-weight: 700;
    }

    .compliance-desc {
      font-size: 0.85rem;
      color: var(--text-body);
    }

    /* 3. 核心六维管理优势网格 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .feature-card {
      padding: 34px 28px;
    }

    .feature-num {
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--primary-cyan);
      letter-spacing: 0.1em;
      margin-bottom: 16px;
      display: block;
    }

    .feature-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 14px;
    }

    .feature-detail {
      font-size: 0.92rem;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 4. 版本矩阵对比 */
    .version-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      align-items: stretch;
    }

    .version-card {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }

    .version-card.popular {
      border: 2px solid var(--primary-cyan);
      background: rgba(16, 32, 68, 0.85);
      box-shadow: 0 0 35px rgba(0, 210, 255, 0.25);
      transform: translateY(-8px);
    }

    .popular-tag {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: linear-gradient(90deg, #00D2FF, #2A7BFF);
      color: #040914;
      font-size: 0.78rem;
      font-weight: 800;
      padding: 4px 16px;
      border-radius: 20px;
      text-transform: uppercase;
    }

    .version-head {
      margin-bottom: 24px;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 20px;
    }

    .version-title {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 8px;
    }

    .version-scope {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .version-price {
      margin: 20px 0 10px;
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--primary-cyan);
    }

    .version-price span {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: normal;
    }

    .version-perks {
      margin-bottom: 32px;
      flex-grow: 1;
    }

    .version-perks li {
      font-size: 0.9rem;
      color: var(--text-body);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .version-perks li span.check {
      color: #00FFB2;
      font-weight: bold;
    }

    /* 5. 行业场景解决方案 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .scenario-card {
      border-radius: var(--radius-lg);
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      overflow: hidden;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .scenario-card:hover {
      border-color: var(--border-hover);
      transform: translateY(-4px);
    }

    .scenario-img-box {
      height: 180px;
      overflow: hidden;
      position: relative;
    }

    .scenario-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .scenario-card:hover .scenario-img-box img {
      transform: scale(1.05);
    }

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

    .scenario-tag {
      font-size: 0.75rem;
      color: var(--primary-cyan);
      font-weight: 600;
      margin-bottom: 8px;
    }

    .scenario-title {
      font-size: 1.2rem;
      color: var(--text-white);
      margin-bottom: 12px;
      font-weight: 700;
    }

    .scenario-text {
      font-size: 0.88rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .scenario-point {
      font-size: 0.8rem;
      color: var(--text-muted);
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
    }

    /* 6. 多端设备与协同演示 */
    .devices-stage {
      background: radial-gradient(circle at center, rgba(16, 36, 78, 0.4) 0%, rgba(6, 11, 24, 0.8) 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 48px;
      box-shadow: var(--shadow-card);
    }

    .devices-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;    }

    .devices-img-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(0, 210, 255, 0.3);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    }

    .devices-img-wrap img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .devices-info h3 {
      font-size: 1.85rem;
      color: var(--text-white);
      margin-bottom: 20px;
      font-weight: 700;
    }

    .devices-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
      margin-top: 24px;
    }

    .device-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px 20px;
    }

    .device-badge-icon {
      font-size: 1.25rem;
      color: var(--primary-cyan);
      line-height: 1;
      padding-top: 2px;
    }

    .device-content h4 {
      font-size: 1.05rem;
      color: var(--text-white);
      margin-bottom: 4px;
    }

    .device-content p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 7. 深色理念与仓储数字化深水区 */
    .immersion-block {
      background: linear-gradient(135deg, rgba(8, 23, 62, 0.85) 0%, rgba(3, 7, 18, 0.95) 100%);
      border: 1px solid rgba(42, 123, 255, 0.35);
      border-radius: var(--radius-xl);
      padding: 64px 48px;
      position: relative;
      overflow: hidden;
    }

    .immersion-block::before {
      content: '';
      position: absolute;
      top: -50%;
      right: -20%;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(0, 210, 255, 0.15) 0%, transparent 70%);
      pointer-events: none;
    }

    .immersion-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
      position: relative;
      z-index: 1;
    }

    .immersion-title {
      font-size: 2.2rem;
      color: var(--text-white);
      line-height: 1.35;
      margin-bottom: 20px;
      font-weight: 800;
    }

    .immersion-text {
      font-size: 1rem;
      color: var(--text-body);
      line-height: 1.85;
      margin-bottom: 28px;
    }

    .immersion-quote {
      border-left: 3px solid var(--primary-cyan);
      padding-left: 20px;
      font-size: 0.95rem;
      color: var(--primary-cyan);
      font-style: italic;
    }

    .immersion-cards {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .immersion-card-item {
      background: rgba(16, 28, 58, 0.7);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      backdrop-filter: blur(8px);
    }

    .immersion-card-item strong {
      display: block;
      color: var(--text-white);
      font-size: 1.05rem;
      margin-bottom: 6px;
    }

    .immersion-card-item span {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
      display: block;
    }

    /* 8. 标杆客户故事 */
    .stories-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .story-card {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .story-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 20px;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 16px;
    }

    .story-company {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-white);
    }

    .story-industry {
      font-size: 0.8rem;
      color: var(--primary-cyan);
      background: rgba(0, 210, 255, 0.1);
      padding: 4px 10px;
      border-radius: 4px;
    }

    .story-body {
      font-size: 0.92rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 24px;
    }

    .story-metrics-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      background: rgba(0, 0, 0, 0.25);
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .story-m-item .m-num {
      font-size: 1.5rem;
      font-weight: 800;
      color: #00FFB2;
      display: block;
    }

    .story-m-item .m-desc {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* 9. 关键运营效能数据统计条 */
    .metrics-bar-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .metric-cell {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      text-align: center;
      transition: var(--transition);
      backdrop-filter: blur(12px);
    }

    .metric-cell:hover {
      border-color: var(--border-hover);
      transform: translateY(-4px);
    }

    .metric-big-num {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1;
      margin-bottom: 10px;
      background: linear-gradient(180deg, #FFFFFF 0%, #00D2FF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .metric-label {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 6px;
    }

    .metric-sub {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 10. 用户评价墙 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .review-card {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-stars {
      color: #FFB800;
      font-size: 0.95rem;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 24px;
      flex-grow: 1;
    }

    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-cyan), var(--primary-blue));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #040914;
      font-weight: bold;
      font-size: 1.1rem;
    }

    .reviewer-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-white);
    }

    .reviewer-role {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* 11. 实施流程流水线 */
    .steps-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .step-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px 24px;
      position: relative;
      transition: var(--transition);
    }

    .step-item:hover {
      border-color: var(--border-hover);
      transform: translateY(-4px);
    }

    .step-badge {
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--primary-cyan);
      margin-bottom: 14px;
      display: inline-block;
      border-bottom: 2px solid var(--primary-cyan);
      padding-bottom: 2px;
    }

    .step-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 12px;
    }

    .step-desc {
      font-size: 0.86rem;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 12. 新闻与实操干货 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .news-card {
      display: flex;
      flex-direction: column;
    }

    .news-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 14px;
    }

    .news-category {
      color: var(--primary-cyan);
      font-weight: 600;
    }

    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-white);
      line-height: 1.45;
      margin-bottom: 14px;
    }

    .news-summary {
      font-size: 0.88rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .news-action {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.85rem;
      color: var(--primary-cyan);
      font-weight: 600;
      cursor: pointer;
    }

    .news-action:hover {
      text-decoration: underline;
    }

    /* 13. 高频问答手风琴 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: var(--border-hover);
    }

    .faq-toggle {
      width: 100%;
      padding: 22px 28px;
      background: none;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      text-align: left;
      cursor: pointer;
      color: var(--text-white);
      font-size: 1.1rem;
      font-weight: 600;
      transition: var(--transition);
    }

    .faq-icon {
      font-size: 1.25rem;
      color: var(--primary-cyan);
      transition: transform 0.3s ease;
    }

    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: rgba(6, 11, 24, 0.4);
    }

    .faq-inner {
      padding: 0 28px 24px 28px;
      font-size: 0.92rem;
      color: var(--text-body);
      line-height: 1.8;
    }

    .faq-item.open .faq-content {
      max-height: 300px;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }

    /* 14. 底部高转化冲刺区 */
    .cta-container {
      background: radial-gradient(circle at center, rgba(16, 44, 102, 0.8) 0%, rgba(9, 18, 42, 0.95) 100%);
      border: 1px solid rgba(0, 210, 255, 0.4);
      border-radius: var(--radius-xl);
      padding: 72px 48px;
      text-align: center;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), var(--shadow-glow);
      position: relative;
      overflow: hidden;
    }

    .cta-title {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--text-white);
      margin-bottom: 18px;
      line-height: 1.3;
    }

    .cta-desc {
      font-size: 1.1rem;
      color: var(--text-body);
      max-width: 680px;
      margin: 0 auto 36px;
      line-height: 1.8;
    }

    .cta-form-box {
      max-width: 540px;
      margin: 0 auto;
      display: flex;
      gap: 12px;
    }

    .cta-input {
      flex-grow: 1;
      padding: 14px 20px;
      background: rgba(4, 9, 22, 0.8);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      color: var(--text-white);
      font-size: 0.95rem;
      transition: var(--transition);
    }

    .cta-input:focus {
      border-color: var(--primary-cyan);
      box-shadow: 0 0 12px rgba(0, 210, 255, 0.3);
    }

    .cta-guarantee {
      margin-top: 24px;
      display: flex;
      justify-content: center;
      gap: 28px;
      font-size: 0.85rem;
      color: var(--text-muted);
      flex-wrap: wrap;
    }

    .cta-guarantee span {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 页脚设计与合规 */
    .site-footer {
      background: #03060E;
      border-top: 1px solid var(--border-color);
      padding: 80px 0 30px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 60px;
    }

    .footer-col h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 22px;
      position: relative;
    }

    .footer-col h4::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--primary-cyan);
    }

    .footer-about p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-top: 16px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .footer-links a {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    .footer-links a:hover {
      color: var(--primary-cyan);
      padding-left: 4px;
    }

    .footer-compliance-list li {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      line-height: 1.6;
    }

    .footer-contact-info p {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 10px;
      line-height: 1.6;
    }

    .footer-hotline {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary-cyan);
      margin-bottom: 8px;
      display: block;
    }

    .sub-footer {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: var(--text-muted);
      flex-wrap: wrap;
      gap: 16px;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .arch-grid, .features-grid, .version-grid, .news-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar-wrap {
        grid-template-columns: repeat(2, 1fr);
      }
      .devices-grid {
        grid-template-columns: 1fr;
      }
      .immersion-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 76px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(6, 11, 24, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        padding: 40px 24px;
        gap: 24px;
        display: none;
      }
      .nav-menu.open {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .hero-title {
        font-size: 2.25rem;
      }
      .section-title {
        font-size: 1.85rem;
      }
      .arch-grid, .features-grid, .version-grid, .scenario-grid, .steps-timeline, .news-grid, .reviews-grid, .stories-grid {
        grid-template-columns: 1fr;
      }
      .metrics-bar-wrap {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-form-box {
        flex-direction: column;
      }
      .sub-footer {
        flex-direction: column;
        text-align: center;
      }
    }