/* roulang page: index */
:root {
      --bg-main: #0B1120;
      --bg-card: rgba(15, 23, 42, 0.75);
      --bg-card-hover: rgba(30, 41, 59, 0.85);
      --primary: #2DD4BF;
      --primary-hover: #14B8A6;
      --primary-light: rgba(45, 212, 191, 0.12);
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-color: rgba(148, 163, 184, 0.15);
      --border-highlight: rgba(45, 212, 191, 0.35);
      --glass-blur: blur(14px);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-soft: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      --shadow-glow: 0 0 25px rgba(45, 212, 191, 0.2);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      font-size: 16px;
      overflow-x: hidden;
    }

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

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

    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部顶栏与导航 */
    .top-bar {
      background: rgba(11, 17, 32, 0.95);
      border-bottom: 1px solid rgba(148, 163, 184, 0.1);
      font-size: 13px;
      color: var(--text-muted);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-info span {
      margin-right: 20px;
    }
    .top-meta a {
      color: var(--text-muted);
      margin-left: 16px;
    }
    .top-meta a:hover {
      color: var(--primary);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: var(--glass-blur);
      -webkit-backdrop-filter: var(--glass-blur);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .site-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #FFFFFF;
    }
    .site-brand .brand-badge {
      background: linear-gradient(135deg, var(--primary) 0%, #0284C7 100%);
      color: #0F172A;
      width: 36px;
      height: 36px;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 18px;
    }
    .nav-links {
      display: flex;
      list-style: none;
      gap: 28px;
      align-items: center;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .btn-action-nav {
      background: var(--primary);
      color: #0F172A;
      font-weight: 600;
      font-size: 14px;
      padding: 9px 20px;
      border-radius: var(--radius-md);
      box-shadow: 0 4px 12px rgba(45, 212, 191, 0.25);
    }
    .btn-action-nav:hover {
      background: var(--primary-hover);
      transform: translateY(-1px);
    }

    /* 板块通用 */
    section {
      padding: 88px 0;
      position: relative;
    }
    .section-alt {
      background: rgba(15, 23, 42, 0.5);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 56px auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-light);
      border: 1px solid var(--border-highlight);
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.25;
      color: #FFFFFF;
      margin-bottom: 18px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. Hero 蓝图：试用申请与资格说明 */
    .hero-section {
      padding: 80px 0 100px;
      background: radial-gradient(circle at 80% 20%, rgba(45, 212, 191, 0.15) 0%, transparent 50%),
                  radial-gradient(circle at 10% 80%, rgba(14, 165, 233, 0.12) 0%, transparent 45%),
                  var(--bg-main);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.2;
      color: #FFFFFF;
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }
    .hero-content h1 span {
      background: linear-gradient(135deg, #FFFFFF 30%, var(--primary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 17px;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.8;
    }
    .hero-perks {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .perk-pill {
      display: flex;
      align-items: center;
      gap: 8px;
      background: rgba(30, 41, 59, 0.6);
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: #E2E8F0;
    }
    .perk-pill i {
      color: var(--primary);
    }
    .hero-card-trial {
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid var(--border-highlight);
      border-radius: var(--radius-lg);
      padding: 36px;
      backdrop-filter: var(--glass-blur);
      box-shadow: var(--shadow-glow), var(--shadow-soft);
      position: relative;
    }
    .hero-card-trial::before {
      content: "实时开通中";
      position: absolute;
      top: 18px;
      right: 20px;
      background: rgba(45, 212, 191, 0.15);
      color: var(--primary);
      font-size: 12px;
      font-weight: 600;
      padding: 3px 10px;
      border-radius: 20px;
      border: 1px solid var(--border-highlight);
    }
    .hero-card-trial h3 {
      font-size: 20px;
      color: #FFFFFF;
      margin-bottom: 8px;
    }
    .hero-card-trial p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .trial-form-group {
      margin-bottom: 16px;
    }
    .trial-form-group label {
      display: block;
      font-size: 13px;
      font-weight: 500;
      color: #CBD5E1;
      margin-bottom: 6px;
    }
    .trial-form-control {
      width: 100%;
      height: 48px;
      background: rgba(11, 17, 32, 0.8);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 0 16px;
      color: #FFFFFF;
      font-size: 15px;
      outline: none;
      transition: var(--transition);
    }
    .trial-form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.2);
    }
    .btn-trial-submit {
      width: 100%;
      height: 48px;
      background: var(--primary);
      color: #0F172A;
      font-size: 16px;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      margin-top: 10px;
    }
    .btn-trial-submit:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
    }
    .trial-notice {
      margin-top: 14px;
      font-size: 12px;
      color: #64748B;
      text-align: center;
    }

    /* 2. 功能亮点 (3栏突出低延迟/高并发/安全) */
    .highlights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .highlight-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      backdrop-filter: var(--glass-blur);
      transition: var(--transition);
    }
    .highlight-card:hover {
      transform: translateY(-6px);
      border-color: var(--border-highlight);
      background: var(--bg-card-hover);
      box-shadow: var(--shadow-soft);
    }
    .card-icon {
      width: 52px;
      height: 52px;
      background: var(--primary-light);
      border: 1px solid var(--border-highlight);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 24px;
      margin-bottom: 24px;
    }
    .highlight-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 12px;
    }
    .highlight-card p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 3. 场景矩阵 (2+1 异形布局) */
    .scenario-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      grid-template-rows: auto auto;
      gap: 28px;
    }
    .scenario-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      backdrop-filter: var(--glass-blur);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .scenario-card:hover {
      border-color: var(--border-highlight);
      transform: translateY(-4px);
    }
    .scenario-card.featured-wide {
      grid-column: span 2;
      display: grid;
      grid-template-columns: 1fr 1fr;
      align-items: center;
    }
    .scenario-media {
      position: relative;
      height: 240px;
      overflow: hidden;
    }
    .scenario-card.featured-wide .scenario-media {
      height: 100%;
      min-height: 320px;
    }
    .scenario-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .scenario-card:hover .scenario-media img {
      transform: scale(1.05);
    }
    .scenario-body {
      padding: 32px;
    }
    .scenario-body .badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 10px;
      letter-spacing: 0.5px;
    }
    .scenario-body h3 {
      font-size: 22px;
      color: #FFFFFF;
      margin-bottom: 12px;
    }
    .scenario-body p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }
    .scenario-points {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .scenario-points li {
      font-size: 14px;
      color: #CBD5E1;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .scenario-points li::before {
      content: "•";
      color: var(--primary);
      font-size: 18px;
    }

    /* 4. 流程步骤 (全链路活动管理) */
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .timeline-steps::before {
      content: "";
      position: absolute;
      top: 36px;
      left: 10%;
      right: 10%;
      height: 2px;
      background: rgba(148, 163, 184, 0.2);
      z-index: 1;
    }
    .step-item {
      position: relative;
      z-index: 2;
      text-align: center;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 20px;
      backdrop-filter: var(--glass-blur);
      transition: var(--transition);
    }
    .step-item:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
    }
    .step-bubble {
      width: 50px;
      height: 50px;
      background: #0F172A;
      border: 2px solid var(--primary);
      border-radius: 50%;
      margin: 0 auto 20px auto;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 800;
      font-size: 18px;
      box-shadow: 0 0 15px rgba(45, 212, 191, 0.3);
    }
    .step-item h4 {
      font-size: 18px;
      color: #FFFFFF;
      margin-bottom: 10px;
    }
    .step-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 5. 截图演示与架构中台 */
    .showcase-block {
      background: linear-gradient(180deg, rgba(30, 41, 59, 0.4) 0%, rgba(15, 23, 42, 0.8) 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      overflow: hidden;
      padding: 40px;
      box-shadow: var(--shadow-soft);
    }
    .showcase-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .showcase-preview {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.8);
    }
    .showcase-info h3 {
      font-size: 26px;
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .showcase-info p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .metric-badges {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .metric-item {
      background: rgba(11, 17, 32, 0.6);
      padding: 16px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--primary);
    }
    .metric-number {
      font-size: 24px;
      font-weight: 800;
      color: #FFFFFF;
    }
    .metric-label {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 6. 客户证言 (深度反馈卡) */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testimonial-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      backdrop-filter: var(--glass-blur);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-body {
      font-size: 15px;
      color: #E2E8F0;
      line-height: 1.7;
      margin-bottom: 24px;
      position: relative;
    }
    .testimonial-body::before {
      content: "“";
      font-size: 48px;
      line-height: 1;
      color: rgba(45, 212, 191, 0.2);
      position: absolute;
      top: -16px;
      left: -10px;
    }
    .author-info {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid rgba(148, 163, 184, 0.1);
      padding-top: 18px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #1E293B;
      border: 1px solid var(--border-highlight);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .author-name {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
    }
    .author-role {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 7. 套餐对比 (会员与版本权益表) */
    .plans-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .plan-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 40px 32px;
      backdrop-filter: var(--glass-blur);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }
    .plan-card.popular {
      border-color: var(--primary);
      box-shadow: 0 0 30px rgba(45, 212, 191, 0.15);
      background: rgba(20, 30, 52, 0.9);
      transform: scale(1.03);
    }
    .plan-badge-top {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #0F172A;
      font-size: 12px;
      font-weight: 800;
      padding: 4px 16px;
      border-radius: 20px;
    }
    .plan-name {
      font-size: 20px;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .plan-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
      min-height: 42px;
    }
    .plan-price {
      font-size: 38px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 24px;
      display: flex;
      align-items: baseline;
      gap: 6px;
    }
    .plan-price span {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 400;
    }
    .plan-features {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .plan-features li {
      font-size: 14px;
      color: #CBD5E1;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .plan-features li svg {
      width: 16px;
      height: 16px;
      fill: var(--primary);
      flex-shrink: 0;
    }
    .btn-plan {
      width: 100%;
      padding: 13px 0;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 700;
      text-align: center;
      border: 1px solid var(--border-color);
      background: rgba(30, 41, 59, 0.8);
      color: #FFFFFF;
      transition: var(--transition);
    }
    .btn-plan:hover {
      background: rgba(51, 65, 85, 1);
      border-color: #64748B;
    }
    .plan-card.popular .btn-plan {
      background: var(--primary);
      color: #0F172A;
      border-color: var(--primary);
    }
    .plan-card.popular .btn-plan:hover {
      background: var(--primary-hover);
    }

    /* 8. 资讯快报 (列表式布局) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      transition: var(--transition);
    }
    .news-card:hover {
      border-color: var(--border-highlight);
      transform: translateY(-4px);
    }
    .news-date {
      font-size: 13px;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 12px;
      display: block;
    }
    .news-card h3 {
      font-size: 18px;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .news-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 9. 下载引导与移动端适配区 */
    .download-strip {
      background: radial-gradient(circle at 100% 50%, rgba(45, 212, 191, 0.12) 0%, transparent 60%), #0F172A;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 48px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 32px;
    }
    .download-text h3 {
      font-size: 26px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 10px;
    }
    .download-text p {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 620px;
    }
    .download-actions {
      display: flex;
      gap: 16px;
      flex-shrink: 0;
    }
    .btn-app-dl {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(30, 41, 59, 0.9);
      border: 1px solid var(--border-color);
      color: #FFFFFF;
      padding: 12px 22px;
      border-radius: var(--radius-md);
      font-size: 14px;
      font-weight: 600;
      transition: var(--transition);
    }
    .btn-app-dl:hover {
      border-color: var(--primary);
      background: rgba(51, 65, 85, 0.9);
      color: var(--primary);
    }

    /* 10. 核心服务矩阵 (4栏栅格) */
    .services-matrix {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .service-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px 24px;
      backdrop-filter: var(--glass-blur);
      transition: var(--transition);
    }
    .service-box:hover {
      border-color: var(--border-highlight);
      transform: translateY(-5px);
      box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
    }
    .service-box-num {
      font-size: 13px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 16px;
      letter-spacing: 1px;
    }
    .service-box h4 {
      font-size: 18px;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .service-box p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 11. 效能数据条 */
    .stats-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      background: rgba(15, 23, 42, 0.9);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 40px 24px;
      text-align: center;
    }
    .stat-metric {
      font-size: 40px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }
    .stat-title {
      font-size: 15px;
      color: #FFFFFF;
      font-weight: 600;
      margin-bottom: 6px;
    }
    .stat-desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 12. 案例展示墙 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .case-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: var(--transition);
    }
    .case-card:hover {
      border-color: var(--border-highlight);
      transform: translateY(-4px);
    }
    .case-thumb {
      height: 200px;
      position: relative;
      overflow: hidden;
    }
    .case-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .case-card:hover .case-thumb img {
      transform: scale(1.08);
    }
    .case-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid var(--border-highlight);
      color: var(--primary);
      font-size: 12px;
      padding: 3px 10px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .case-info {
      padding: 24px;
    }
    .case-info h4 {
      font-size: 17px;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .case-info p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 13. 合作伙伴平铺 */
    .partners-array {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 18px;
    }
    .partner-item {
      background: rgba(30, 41, 59, 0.35);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #64748B;
      font-weight: 700;
      font-size: 15px;
      transition: var(--transition);
    }
    .partner-item:hover {
      color: var(--primary);
      border-color: var(--border-highlight);
      background: rgba(30, 41, 59, 0.7);
    }

    /* 14. 信用保障图标条 */
    .trust-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      border-top: 1px solid var(--border-color);
      padding-top: 48px;
    }
    .trust-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .trust-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: rgba(45, 212, 191, 0.1);
      border: 1px solid var(--border-highlight);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      flex-shrink: 0;
    }
    .trust-title {
      font-size: 15px;
      color: #FFFFFF;
      font-weight: 700;
    }
    .trust-sub {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 15. FAQ 手风琴与收口区域 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      backdrop-filter: var(--glass-blur);
    }
    .faq-question {
      padding: 22px 28px;
      font-size: 16px;
      font-weight: 700;
      color: #FFFFFF;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-question span.arrow {
      color: var(--primary);
      font-size: 18px;
      transition: transform 0.2s ease;
    }
    .faq-answer {
      padding: 0 28px 22px;
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 页脚 */
    .site-footer {
      background: #070D18;
      border-top: 1px solid var(--border-color);
      padding: 64px 0 32px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-about h4 {
      font-size: 18px;
      color: #FFFFFF;
      margin-bottom: 16px;
      font-weight: 800;
    }
    .footer-about p {
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-links-col h5 {
      font-size: 15px;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-links-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links-col a:hover {
      color: var(--primary);
    }
    .footer-contact-info {
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 13px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(148, 163, 184, 0.1);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }
    .footer-bottom a {
      color: var(--text-muted);
    }
    .footer-bottom a:hover {
      color: var(--primary);
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .highlights-grid, .testimonial-grid, .plans-grid, .news-grid, .case-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-steps::before {
        display: none;
      }
      .services-matrix, .stats-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .partners-array {
        grid-template-columns: repeat(3, 1fr);
      }
      .trust-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .scenario-card.featured-wide {
        grid-column: span 1;
        grid-template-columns: 1fr;
      }
      .scenario-grid {
        grid-template-columns: 1fr;
      }
      .showcase-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .section-title {
        font-size: 26px;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .download-strip {
        flex-direction: column;
        align-items: flex-start;
        padding: 32px 24px;
      }
      .download-actions {
        width: 100%;
        flex-direction: column;
      }
      .btn-app-dl {
        justify-content: center;
      }
    }

    @media (max-width: 640px) {
      .highlights-grid, .testimonial-grid, .plans-grid, .news-grid, .case-grid,
      .timeline-steps, .services-matrix, .stats-bar, .partners-array, .trust-strip,
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-card-trial {
        padding: 24px 20px;
      }
      .showcase-block {
        padding: 24px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }