/* roulang page: index */
:root {
      --bg-base: #060B14;
      --bg-surface: #0D1626;
      --bg-card: rgba(13, 22, 38, 0.72);
      --primary-blue: #1D63FF;
      --accent-cyan: #00F0FF;
      --accent-gold: #D4AF37;
      --text-primary: #FFFFFF;
      --text-secondary: #94A3B8;
      --text-muted: #64748B;
      --glass-border: rgba(0, 240, 255, 0.18);
      --glass-border-hover: rgba(0, 240, 255, 0.45);
      --border-soft: rgba(255, 255, 255, 0.08);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-glow: 0 0 25px rgba(0, 240, 255, 0.25);
      --container-max: 1240px;
      --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
      background-color: var(--bg-base);
    }

    body {
      font-family: var(--font-family);
      background-color: var(--bg-base);
      color: var(--text-primary);
      line-height: 1.6;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

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

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

    /* 顶部通栏 */
    .top-bar {
      background-color: rgba(6, 11, 20, 0.95);
      border-bottom: 1px solid var(--border-soft);
      font-size: 0.8125rem;
      color: var(--text-muted);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-bar-items {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .top-bar-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .dot-online {
      width: 7px;
      height: 7px;
      background-color: #10B981;
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 8px #10B981;
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(6, 11, 20, 0.85);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(0, 240, 255, 0.12);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.25rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      color: var(--text-primary);
    }
    .logo-badge {
      width: 38px;
      height: 38px;
      border-radius: var(--radius-sm);
      background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
    }
    .logo-badge svg {
      width: 22px;
      height: 22px;
      fill: #fff;
    }
    .nav-links {
      display: flex;
      list-style: none;
      gap: 28px;
    }
    .nav-link {
      color: var(--text-secondary);
      font-size: 0.9375rem;
      font-weight: 500;
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--accent-cyan);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-cyan);
      box-shadow: 0 0 8px var(--accent-cyan);
      transition: width 0.3s ease;
    }
    .nav-link:hover::after {
      width: 100%;
    }
    .btn-header {
      background: linear-gradient(135deg, var(--primary-blue), #0d96f2);
      border: 1px solid rgba(0, 240, 255, 0.4);
      color: #fff;
      padding: 9px 20px;
      border-radius: 30px;
      font-size: 0.875rem;
      font-weight: 600;
      box-shadow: 0 0 15px rgba(29, 99, 255, 0.3);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-header:hover {
      box-shadow: 0 0 25px rgba(0, 240, 255, 0.5);
      border-color: var(--accent-cyan);
      transform: translateY(-1px);
    }

    /* 板块公共架构 */
    .section-wrap {
      padding: 90px 0;
      position: relative;
      border-bottom: 1px solid var(--border-soft);
    }
    .section-wrap:nth-child(even) {
      background-color: var(--bg-surface);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 1px;
      text-transform: uppercase;
      background: rgba(0, 240, 255, 0.1);
      color: var(--accent-cyan);
      border: 1px solid rgba(0, 240, 255, 0.25);
      margin-bottom: 14px;
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 700;
      line-height: 1.35;
      color: var(--text-primary);
      margin-bottom: 16px;
    }
    .section-desc {
      color: var(--text-secondary);
      font-size: 1rem;
      line-height: 1.7;
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: var(--bg-card);
      border: 1px solid var(--glass-border);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    }
    .glass-card:hover {
      border-color: var(--glass-border-hover);
      box-shadow: 0 12px 35px rgba(0, 0, 0, 0.4), var(--shadow-glow);
      transform: translateY(-4px);
    }

    /* 按钮通用 */
    .btn-glow {
      background: linear-gradient(135deg, var(--primary-blue), #00A6FF);
      color: #fff;
      padding: 13px 30px;
      border-radius: 30px;
      font-size: 1rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      border: 1px solid rgba(0, 240, 255, 0.5);
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
      cursor: pointer;
    }
    .btn-glow:hover {
      box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
      transform: translateY(-2px);
      color: #fff;
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: var(--text-primary);
      padding: 13px 28px;
      border-radius: 30px;
      font-size: 1rem;
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-outline:hover {
      border-color: var(--accent-cyan);
      background: rgba(0, 240, 255, 0.08);
      color: var(--accent-cyan);
    }

    /* 1. Hero 工业参数首屏 */
    .hero-section {
      position: relative;
      padding: 100px 0 70px 0;
      background: radial-gradient(circle at 75% 25%, rgba(29, 99, 255, 0.2), transparent 50%),
                  radial-gradient(circle at 10% 80%, rgba(0, 240, 255, 0.12), transparent 45%),
                  url('/assets/images/9fa5fdb76d3c5adf.webp') no-repeat center center / cover;
      overflow: hidden;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(6, 11, 20, 0.85) 0%, rgba(6, 11, 20, 0.95) 100%);
      z-index: 1;
    }
    .hero-container {
      position: relative;
      z-index: 2;
    }
    .hero-main-content {
      max-width: 900px;
      margin-bottom: 50px;
    }
    .hero-h1 {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 24px;
      background: linear-gradient(135deg, #FFFFFF 40%, var(--accent-cyan) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-intro {
      font-size: 1.125rem;
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 36px;
    }
    .hero-cta-group {
      display: flex;
      gap: 18px;
      flex-wrap: wrap;
    }
    /* 工业参数网格条 */
    .hero-params-bar {
      margin-top: 40px;
      padding: 24px 32px;
      background: rgba(13, 22, 38, 0.8);
      border: 1px solid var(--glass-border);
      backdrop-filter: blur(20px);
      border-radius: var(--radius-md);
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    }
    .param-item {
      border-right: 1px solid var(--border-soft);
      padding-right: 18px;
    }
    .param-item:last-child {
      border-right: none;
      padding-right: 0;
    }
    .param-label {
      font-size: 0.8125rem;
      color: var(--text-muted);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .param-val {
      font-size: 1.625rem;
      font-weight: 700;
      color: var(--accent-cyan);
      font-family: monospace, sans-serif;
    }
    .param-sub {
      font-size: 0.75rem;
      color: var(--text-secondary);
      margin-top: 4px;
    }

    /* 2. 客户案例 (图文故事卡) */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .case-card {
      display: flex;
      flex-direction: column;
      overflow: hidden;
      padding: 0;
    }
    .case-img-box {
      width: 100%;
      height: 240px;
      position: relative;
      overflow: hidden;
    }
    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .case-card:hover .case-img-box img {
      transform: scale(1.04);
    }
    .case-content-box {
      padding: 30px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .case-tag {
      font-size: 0.75rem;
      color: var(--accent-gold);
      font-weight: 600;
      margin-bottom: 10px;
      text-transform: uppercase;
    }
    .case-title {
      font-size: 1.25rem;
      margin-bottom: 12px;
      color: var(--text-primary);
    }
    .case-desc {
      font-size: 0.9375rem;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 20px;
      flex: 1;
    }
    .case-metrics-row {
      display: flex;
      gap: 20px;
      padding-top: 16px;
      border-top: 1px solid var(--border-soft);
    }
    .metric-micro {
      font-size: 0.8125rem;
    }
    .metric-micro strong {
      color: var(--accent-cyan);
      font-size: 1.0625rem;
      display: block;
    }

    /* 3. 结果数据条 (全宽深色条带) */
    .data-strip-wrap {
      background: radial-gradient(ellipse at center, #102142 0%, #060B14 100%);
      padding: 60px 0;
      border-top: 1px solid rgba(0, 240, 255, 0.2);
      border-bottom: 1px solid rgba(0, 240, 255, 0.2);
    }
    .data-strip-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .strip-stat-num {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.1;
      background: linear-gradient(180deg, #FFFFFF, var(--accent-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 8px;
    }
    .strip-stat-label {
      font-size: 1rem;
      color: var(--text-primary);
      font-weight: 600;
      margin-bottom: 4px;
    }
    .strip-stat-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* 4. 前后对比 (运作结果对比) */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .compare-panel {
      padding: 36px;
      border-radius: var(--radius-md);
      position: relative;
    }
    .compare-panel.traditional {
      background: rgba(13, 22, 38, 0.4);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .compare-panel.smart {
      background: rgba(13, 22, 38, 0.85);
      border: 1px solid var(--accent-cyan);
      box-shadow: 0 0 30px rgba(0, 240, 255, 0.15);
    }
    .compare-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--border-soft);
    }
    .compare-title {
      font-size: 1.25rem;
      font-weight: 700;
    }
    .compare-badge-trad {
      color: var(--text-muted);
      font-size: 0.75rem;
      border: 1px solid var(--text-muted);
      padding: 2px 8px;
      border-radius: 4px;
    }
    .compare-badge-smart {
      color: var(--accent-cyan);
      font-size: 0.75rem;
      border: 1px solid var(--accent-cyan);
      padding: 2px 8px;
      border-radius: 4px;
      background: rgba(0, 240, 255, 0.1);
    }
    .compare-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .compare-list li {
      font-size: 0.9375rem;
      line-height: 1.6;
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }
    .compare-icon {
      flex-shrink: 0;
      width: 20px;
      height: 20px;
      margin-top: 2px;
    }
    .icon-cross {
      color: #EF4444;
    }
    .icon-check {
      color: #10B981;
    }

    /* 5. 核心服务矩阵 (3x2 网格) */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      position: relative;
      overflow: hidden;
    }
    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    .service-card:hover::before {
      opacity: 1;
    }
    .service-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 10px;
      background: rgba(0, 240, 255, 0.08);
      border: 1px solid rgba(0, 240, 255, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--accent-cyan);
    }
    .service-card-title {
      font-size: 1.1875rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-primary);
    }
    .service-card-desc {
      font-size: 0.9375rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* 6. 技术架构与认证标准 (左图右文) */
    .tech-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .tech-image-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--glass-border);
      position: relative;
    }
    .tech-image-wrap img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .tech-items {
      display: flex;
      flex-direction: column;
      gap: 20px;
      margin-top: 24px;
    }
    .tech-item {
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }
    .tech-item-badge {
      width: 32px;
      height: 32px;
      background: rgba(29, 99, 255, 0.2);
      border: 1px solid rgba(0, 240, 255, 0.3);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-cyan);
      font-weight: bold;
      font-size: 0.8125rem;
      flex-shrink: 0;
    }
    .tech-item h4 {
      font-size: 1rem;
      margin-bottom: 4px;
      color: var(--text-primary);
    }
    .tech-item p {
      font-size: 0.875rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 7. 产品方案与梯度权益 (3张对比卡) */
    .tier-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      align-items: center;
    }
    .tier-card {
      padding: 36px 30px;
      border-radius: var(--radius-md);
      background: var(--bg-card);
      border: 1px solid var(--glass-border);
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .tier-card.featured {
      background: linear-gradient(180deg, rgba(13, 22, 38, 0.95), rgba(20, 35, 60, 0.9));
      border: 1px solid var(--accent-cyan);
      box-shadow: 0 0 35px rgba(0, 240, 255, 0.25);
      transform: scale(1.04);
      z-index: 2;
    }
    .tier-ribbon {
      position: absolute;
      top: -12px;
      right: 24px;
      background: linear-gradient(90deg, var(--accent-gold), #F3BA2F);
      color: #000;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 12px;
      border-radius: 20px;
      text-transform: uppercase;
    }
    .tier-name {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .tier-subtitle {
      font-size: 0.875rem;
      color: var(--text-secondary);
      margin-bottom: 24px;
    }
    .tier-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 32px;
      flex: 1;
    }
    .tier-features li {
      font-size: 0.875rem;
      color: var(--text-secondary);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .tier-features li svg {
      width: 16px;
      height: 16px;
      fill: var(--accent-cyan);
      flex-shrink: 0;
    }

    /* 8. 演进历程与里程碑 (时间轴) */
    .timeline-container {
      position: relative;
      max-width: 1000px;
      margin: 0 auto;
    }
    .timeline-container::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: linear-gradient(180deg, transparent, var(--accent-cyan), transparent);
      transform: translateX(-50%);
    }
    .timeline-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 40px;
      position: relative;
    }
    .timeline-row:nth-child(even) {
      flex-direction: row-reverse;
    }
    .timeline-content {
      width: 45%;
    }
    .timeline-node {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: var(--bg-base);
      border: 3px solid var(--accent-cyan);
      box-shadow: 0 0 12px var(--accent-cyan);
      z-index: 2;
    }
    .timeline-date {
      color: var(--accent-cyan);
      font-weight: 700;
      font-size: 0.875rem;
      margin-bottom: 6px;
    }

    /* 9. 真实客户评价 (评价墙) */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-header {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
    }
    .testi-avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #1d63ff, #00f0ff);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1rem;
      color: #fff;
    }
    .testi-stars {
      color: #FBBF24;
      font-size: 0.875rem;
      margin-top: 4px;
    }
    .testi-text {
      font-size: 0.9375rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* 10. 资讯动态摘要 */
    .news-wrapper {
      display: grid;
      grid-template-columns: 1fr;
      gap: 24px;
    }
    .news-featured {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 32px;
      align-items: center;
      padding: 32px;
    }
    .news-featured-img {
      border-radius: var(--radius-sm);
      overflow: hidden;
      max-height: 280px;
    }
    .news-featured-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-list-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-item-card {
      padding: 24px;
    }
    .news-date {
      font-size: 0.8125rem;
      color: var(--accent-cyan);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.0625rem;
      font-weight: 600;
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .news-excerpt {
      font-size: 0.875rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 11. 安全保障体系 (4列紧凑微卡) */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .security-card {
      text-align: center;
      padding: 30px 20px;
    }
    .security-icon {
      width: 48px;
      height: 48px;
      margin: 0 auto 16px;
      background: rgba(0, 240, 255, 0.1);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-cyan);
    }
    .security-title {
      font-size: 1.0625rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .security-desc {
      font-size: 0.875rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 12. 快速解答与常见问题 (手风琴) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      background: var(--bg-card);
      overflow: hidden;
      transition: border-color 0.25s ease;
    }
    .faq-item:hover {
      border-color: var(--glass-border);
    }
    .faq-summary {
      padding: 22px 28px;
      cursor: pointer;
      font-size: 1.0625rem;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      list-style: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-icon-arrow {
      width: 18px;
      height: 18px;
      transition: transform 0.3s ease;
      color: var(--accent-cyan);
    }
    .faq-item[open] .faq-icon-arrow {
      transform: rotate(180deg);
    }
    .faq-content {
      padding: 0 28px 24px 28px;
      font-size: 0.9375rem;
      color: var(--text-secondary);
      line-height: 1.7;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      margin-top: 6px;
      padding-top: 16px;
    }

    /* 转化表单区 */
    .cta-booking-section {
      padding: 90px 0;
      background: radial-gradient(circle at 50% 50%, rgba(29, 99, 255, 0.25) 0%, #060B14 80%);
      border-top: 1px solid var(--border-soft);
    }
    .booking-card {
      max-width: 860px;
      margin: 0 auto;
      background: rgba(13, 22, 38, 0.9);
      border: 1px solid var(--accent-cyan);
      box-shadow: 0 0 40px rgba(0, 240, 255, 0.2);
      border-radius: var(--radius-lg);
      padding: 48px;
    }
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-top: 32px;
    }
    .form-group-full {
      grid-column: span 2;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      color: var(--text-secondary);
      margin-bottom: 8px;
      font-weight: 500;
    }
    .form-control {
      width: 100%;
      background: rgba(6, 11, 20, 0.8);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      padding: 12px 16px;
      color: #fff;
      font-size: 0.9375rem;
      outline: none;
      transition: all 0.25s ease;
    }
    .form-control:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
    }
    .form-btn-submit {
      width: 100%;
      padding: 15px;
      background: linear-gradient(135deg, var(--primary-blue), #00F0FF);
      color: #060B14;
      font-size: 1.0625rem;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 0 25px rgba(0, 240, 255, 0.4);
      margin-top: 10px;
      transition: all 0.3s ease;
    }
    .form-btn-submit:hover {
      box-shadow: 0 0 35px rgba(0, 240, 255, 0.6);
      transform: translateY(-2px);
    }
    .form-privacy-note {
      text-align: center;
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-top: 16px;
    }

    /* 页脚 */
    .site-footer {
      background-color: #04070D;
      border-top: 1px solid var(--border-soft);
      padding: 70px 0 30px;
      font-size: 0.875rem;
      color: var(--text-secondary);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.8fr 1fr 1fr 1.4fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--accent-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* 移动端汉堡切换 */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      color: #fff;
      font-size: 1.5rem;
      cursor: pointer;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-params-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }
      .param-item:nth-child(2) {
        border-right: none;
      }
      .services-grid, .tier-grid, .testimonials-grid, .news-list-grid, .security-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .tier-card.featured {
        transform: none;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: rgba(6, 11, 20, 0.98);
        border-bottom: 1px solid var(--glass-border);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
      }
      .nav-links.show {
        display: flex;
      }
      .btn-header {
        display: none;
      }
      .hero-h1 {
        font-size: 2.125rem;
      }
      .case-grid, .compare-container, .tech-split, .news-featured {
        grid-template-columns: 1fr;
      }
      .timeline-container::before {
        left: 20px;
      }
      .timeline-row, .timeline-row:nth-child(even) {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 45px;
      }
      .timeline-content {
        width: 100%;
      }
      .timeline-node {
        left: 20px;
        transform: translate(-50%, -50%);
      }
      .data-strip-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .booking-card {
        padding: 30px 20px;
      }
    }

    @media (max-width: 520px) {
      .hero-params-bar {
        grid-template-columns: 1fr;
      }
      .param-item {
        border-right: none;
        border-bottom: 1px solid var(--border-soft);
        padding-bottom: 12px;
      }
      .param-item:last-child {
        border-bottom: none;
      }
      .services-grid, .tier-grid, .testimonials-grid, .news-list-grid, .security-grid, .data-strip-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .section-wrap {
        padding: 60px 0;
      }
    }