/* roulang page: index */
:root {
      --primary: #0B0F12;
      --primary-card: #131A20;
      --accent: #00D2A0;
      --accent-hover: #00b388;
      --accent-subtle: rgba(0, 210, 160, 0.12);
      --secondary: #4A5568;
      --muted: #8C96A4;
      --bg-page: #F8F9FA;
      --bg-white: #FFFFFF;
      --bg-panel: #F0F2F5;
      --border-light: rgba(15, 23, 42, 0.08);
      --border-dark: rgba(255, 255, 255, 0.12);
      --text-main: #1A202C;
      --text-light: #F8FAFC;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 14px;
      --container-max: 1240px;
      --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-page);
      line-height: 1.7;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, border-color 0.2s 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: #06090B;
      color: var(--muted);
      font-size: 13px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-info-group {
      display: flex;
      gap: 24px;
    }
    .top-info-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 7px;
      height: 7px;
      background: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent);
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 15, 18, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-dark);
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 800;
      color: var(--text-light);
      letter-spacing: -0.02em;
    }
    .brand-logo svg {
      width: 32px;
      height: 32px;
      color: var(--accent);
    }
    .brand-tag {
      font-size: 11px;
      font-weight: 600;
      color: var(--accent);
      border: 1px solid var(--accent);
      padding: 2px 6px;
      border-radius: var(--radius-sm);
      margin-left: 4px;
    }
    .main-nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .main-nav-links a {
      color: #CAD5E2;
      font-size: 14px;
      font-weight: 500;
    }
    .main-nav-links a:hover, .main-nav-links a.active {
      color: var(--accent);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      border: 1px solid transparent;
      min-height: 42px;
    }
    .btn-accent {
      background: var(--accent);
      color: #0B0F12;
      box-shadow: 0 4px 14px rgba(0, 210, 160, 0.25);
    }
    .btn-accent:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 210, 160, 0.35);
    }
    .btn-outline-dark {
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: var(--text-light);
      background: transparent;
    }
    .btn-outline-dark:hover {
      border-color: var(--accent);
      color: var(--accent);
      background: rgba(0, 210, 160, 0.05);
    }
    .mobile-toggle {
      display: none;
      background: transparent;
      border: none;
      color: #fff;
      font-size: 24px;
      cursor: pointer;
    }

    /* 模块通用骨架 */
    .section-sp {
      padding: 96px 0;
    }
    .section-sp-dark {
      background-color: var(--primary);
      color: var(--text-light);
    }
    .section-sp-alt {
      background-color: var(--bg-panel);
    }
    .section-sp-white {
      background-color: var(--bg-white);
    }
    .section-header {
      margin-bottom: 56px;
      max-width: 780px;
    }
    .section-header.center-mode {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 12px;
      background: var(--accent-subtle);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      color: inherit;
    }
    .section-desc {
      font-size: 16px;
      color: var(--secondary);
      line-height: 1.7;
    }
    .section-sp-dark .section-desc {
      color: var(--muted);
    }

    /* 板块01：Hero */
    .hero-banner {
      position: relative;
      background-color: #070B0E;
      background-image: linear-gradient(rgba(7, 11, 14, 0.88), rgba(7, 11, 14, 0.94)), url('/assets/images/7f93f92ff635b098.webp');
      background-size: cover;
      background-position: center;
      padding: 80px 0 100px 0;
      border-bottom: 1px solid var(--border-dark);
      color: #fff;
    }
    .hero-top-loc {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 6px 14px;
      border-radius: 40px;
      font-size: 13px;
      color: #CBD5E1;
      margin-bottom: 24px;
    }
    .hero-top-loc span {
      color: var(--accent);
      font-weight: 600;
    }
    .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;
      letter-spacing: -0.03em;
      margin-bottom: 20px;
      color: #FFFFFF;
    }
    .hero-content p {
      font-size: 16px;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-btn-row {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-meta-badges {
      display: flex;
      gap: 32px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    .meta-stat-item h4 {
      font-size: 24px;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 4px;
      font-feature-settings: "tnum";
    }
    .meta-stat-item p {
      font-size: 12px;
      color: #64748B;
      margin-bottom: 0;
    }
    .hero-visual-board {
      background: rgba(19, 26, 32, 0.85);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
      position: relative;
    }
    .terminal-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-bottom: 14px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 16px;
    }
    .terminal-dots {
      display: flex;
      gap: 6px;
    }
    .terminal-dots i {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      display: inline-block;
      background: #334155;
    }
    .terminal-dots i:nth-child(1) { background: #EF4444; }
    .terminal-dots i:nth-child(2) { background: #F59E0B; }
    .terminal-dots i:nth-child(3) { background: #10B981; }
    .terminal-title {
      font-size: 12px;
      color: #64748B;
      font-family: monospace;
    }
    .stage-canvas {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.05);
    }
    .stage-canvas img {
      width: 100%;
      height: 250px;
      object-fit: cover;
    }
    .hud-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 40%, rgba(7, 11, 14, 0.85) 100%);
      display: flex;
      align-items: flex-end;
      padding: 16px;
    }
    .hud-chips {
      display: flex;
      gap: 10px;
      width: 100%;
    }
    .hud-chip {
      background: rgba(0, 0, 0, 0.65);
      border: 1px solid var(--accent);
      padding: 6px 10px;
      border-radius: 4px;
      font-size: 12px;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块02：优惠阶梯 / 采购交付分级 */
    .tier-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .tier-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      position: relative;
      transition: all 0.3s ease;
    }
    .tier-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 210, 160, 0.4);
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
    }
    .tier-badge {
      display: inline-block;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 8px;
      border-radius: var(--radius-sm);
      background: var(--bg-panel);
      color: var(--secondary);
      margin-bottom: 16px;
    }
    .tier-level {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .tier-price {
      font-size: 28px;
      font-weight: 800;
      color: #0F172A;
      margin-bottom: 16px;
    }
    .tier-price small {
      font-size: 13px;
      font-weight: 400;
      color: var(--muted);
    }
    .tier-features {
      list-style: none;
      margin: 24px 0;
      border-top: 1px solid var(--border-light);
      padding-top: 16px;
    }
    .tier-features li {
      font-size: 14px;
      color: var(--secondary);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .tier-features li::before {
      content: "✓";
      color: var(--accent);
      font-weight: bold;
    }

    /* 板块03：套餐对比 / 车规方案规格对比 */
    .compare-table-wrapper {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      overflow-x: auto;
      box-shadow: 0 4px 16px rgba(0,0,0,0.03);
    }
    .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-light);
    }
    .compare-table th {
      background: #F8FAFC;
      font-weight: 700;
      color: #0F172A;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table td:first-child {
      font-weight: 600;
      color: #334155;
      background: #FAFAFA;
      width: 25%;
    }
    .tag-check {
      color: var(--accent);
      font-weight: 700;
    }

    /* 板块04：限时入口 / 仿真算力测试预约 */
    .spotlight-box {
      background: linear-gradient(135deg, #0F172A 0%, #070B0E 100%);
      border: 1px solid rgba(0, 210, 160, 0.3);
      border-radius: var(--radius-lg);
      padding: 48px;
      color: #fff;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 40px;
      position: relative;
      overflow: hidden;
    }
    .spotlight-box::after {
      content: "";
      position: absolute;
      top: -50%;
      right: -20%;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(0, 210, 160, 0.15) 0%, transparent 70%);
      pointer-events: none;
    }
    .spotlight-text h3 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 12px;
      color: #fff;
    }
    .spotlight-text p {
      font-size: 15px;
      color: #94A3B8;
      max-width: 600px;
    }
    .countdown-bar {
      display: flex;
      align-items: center;
      gap: 16px;
      background: rgba(255, 255, 255, 0.06);
      padding: 12px 20px;
      border-radius: var(--radius-sm);
      margin-top: 20px;
      font-size: 13px;
    }
    .countdown-num {
      background: #00D2A0;
      color: #070B0E;
      font-weight: 800;
      padding: 4px 8px;
      border-radius: 3px;
      font-family: monospace;
    }

    /* 板块05：爆款清单 / 核心产品矩阵 */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .product-card {
      background: #fff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .product-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 36px rgba(0,0,0,0.08);
      border-color: rgba(0, 210, 160, 0.4);
    }
    .product-img-box {
      height: 200px;
      position: relative;
      overflow: hidden;
      background: #0B0F12;
    }
    .product-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .product-card:hover .product-img-box img {
      transform: scale(1.05);
    }
    .product-pill {
      position: absolute;
      top: 12px;
      right: 12px;
      background: rgba(11, 15, 18, 0.8);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: var(--accent);
      font-size: 11px;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
    }
    .product-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .product-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .product-desc {
      font-size: 14px;
      color: var(--secondary);
      margin-bottom: 16px;
      flex: 1;
      line-height: 1.6;
    }
    .product-meta-list {
      border-top: 1px solid var(--border-light);
      padding-top: 14px;
      font-size: 12px;
      color: var(--muted);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
    }

    /* 板块06：全栈架构解耦分层 */
    .arch-stack {
      display: flex;
      flex-direction: column;
      gap: 16px;
      max-width: 960px;
      margin: 0 auto;
    }
    .arch-layer {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      display: grid;
      grid-template-columns: 240px 1fr;
      gap: 24px;
      align-items: center;
      transition: border-color 0.25s ease;
    }
    .arch-layer:hover {
      border-color: var(--accent);
    }
    .arch-layer-head {
      border-right: 2px solid var(--border-light);
      padding-right: 20px;
    }
    .arch-layer-tag {
      font-size: 12px;
      color: var(--accent);
      font-weight: 700;
      font-family: monospace;
    }
    .arch-layer-title {
      font-size: 18px;
      font-weight: 700;
      color: #0F172A;
      margin-top: 4px;
    }
    .arch-layer-content {
      font-size: 14px;
      color: var(--secondary);
    }
    .arch-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 10px;
    }
    .arch-chip {
      background: var(--bg-panel);
      padding: 3px 8px;
      border-radius: 3px;
      font-size: 12px;
      color: #334155;
    }

    /* 板块07：算法研发与部署流水线 */
    .pipeline-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .pipeline-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      position: relative;
    }
    .pipeline-step {
      font-size: 36px;
      font-weight: 900;
      color: rgba(255, 255, 255, 0.1);
      font-family: monospace;
      line-height: 1;
      margin-bottom: 12px;
    }
    .pipeline-title {
      font-size: 17px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 10px;
    }
    .pipeline-desc {
      font-size: 13px;
      color: var(--muted);
      line-height: 1.6;
    }

    /* 板块08：核心技术优势网格 (6卡) */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: all 0.3s ease;
    }
    .adv-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 210, 160, 0.4);
      box-shadow: 0 12px 28px rgba(0, 0, 0, 0.05);
    }
    .adv-icon {
      width: 44px;
      height: 44px;
      background: var(--accent-subtle);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      margin-bottom: 20px;
    }
    .adv-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .adv-card p {
      font-size: 14px;
      color: var(--secondary);
      line-height: 1.65;
    }

    /* 板块09：深色工程沉浸解析 */
    .dark-dive-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .dive-img-frame {
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: #000;
    }
    .dive-img-frame img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .dive-content h3 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 18px;
      line-height: 1.3;
    }
    .dive-content p {
      font-size: 15px;
      color: var(--muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .dive-specs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 20px;
    }
    .dive-spec-item h5 {
      font-size: 13px;
      color: var(--accent);
      margin-bottom: 6px;
    }
    .dive-spec-item p {
      font-size: 13px;
      color: #94A3B8;
      margin-bottom: 0;
    }

    /* 板块10：评价墙 / 行业客户口碑 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testimonial-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .test-quote {
      font-size: 15px;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 24px;
      position: relative;
    }
    .test-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-light);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #475569;
      font-size: 14px;
    }
    .author-name {
      font-size: 14px;
      font-weight: 700;
      color: #0F172A;
    }
    .author-role {
      font-size: 12px;
      color: var(--muted);
    }

    /* 板块11：保障图标条 / 车规与安全认证 */
    .assurance-bar-wrap {
      background: #0E1419;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 40px 0;
    }
    .assurance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .assurance-item {
      display: flex;
      align-items: center;
      gap: 16px;
      color: #fff;
    }
    .assurance-icon {
      width: 48px;
      height: 48px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      flex-shrink: 0;
    }
    .assurance-text h4 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 4px;
      color: #F8FAFC;
    }
    .assurance-text p {
      font-size: 12px;
      color: var(--muted);
      line-height: 1.4;
      margin: 0;
    }

    /* 板块12：实测数据与指标仪表条 */
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px 20px;
      text-align: center;
    }
    .metric-card .num {
      font-size: 44px;
      font-weight: 900;
      color: #0B0F12;
      line-height: 1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .metric-card .num span {
      font-size: 20px;
      font-weight: 700;
      color: var(--accent);
    }
    .metric-card h4 {
      font-size: 15px;
      font-weight: 700;
      color: #334155;
      margin-bottom: 6px;
    }
    .metric-card p {
      font-size: 13px;
      color: var(--muted);
      margin: 0;
    }

    /* 板块13：前沿技术资讯 / 算法白皮书 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.3s ease;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px rgba(0,0,0,0.06);
    }
    .news-img {
      height: 180px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 24px;
    }
    .news-meta {
      font-size: 12px;
      color: var(--accent);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.4;
      color: #0F172A;
    }
    .news-desc {
      font-size: 13px;
      color: var(--secondary);
      line-height: 1.6;
    }

    /* 板块14：加购引导与闭环对接 (CTA收口) */
    .cta-stage {
      background: #070B0E;
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: #fff;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 48px;
      align-items: center;
    }
    .cta-text h3 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .cta-text p {
      font-size: 15px;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .cta-form {
      background: #11171E;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 32px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      color: #CBD5E1;
      margin-bottom: 6px;
    }
    .form-group input, .form-group select {
      width: 100%;
      background: #090D10;
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 4px;
      padding: 12px;
      color: #fff;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-group input:focus, .form-group select:focus {
      border-color: var(--accent);
    }
    .form-submit-btn {
      width: 100%;
      margin-top: 8px;
    }

    /* 页脚 */
    .site-footer {
      background: #040709;
      color: #64748B;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 72px 0 32px 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-col h5 {
      color: #F8FAFC;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-col p {
      font-size: 13px;
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a {
      color: #94A3B8;
      font-size: 13px;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #475569;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .dark-dive-grid, .cta-stage {
        grid-template-columns: 1fr;
      }
      .product-grid, .tier-grid, .advantage-grid, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-grid, .assurance-grid, .pipeline-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar { display: none; }
      .main-nav-links, .header-cta { display: none; }
      .mobile-toggle { display: block; }
      .section-sp { padding: 60px 0; }
      .hero-banner { padding: 50px 0 70px 0; }
      .hero-content h1 { font-size: 32px; }
      .section-title { font-size: 26px; }
      .product-grid, .tier-grid, .advantage-grid, .testimonial-grid, .news-grid, .pipeline-grid, .metric-grid, .assurance-grid {
        grid-template-columns: 1fr;
      }
      .spotlight-box {
        flex-direction: column;
        align-items: flex-start;
        padding: 32px 24px;
      }
      .arch-layer {
        grid-template-columns: 1fr;
        gap: 12px;
      }
      .arch-layer-head {
        border-right: none;
        border-bottom: 1px solid var(--border-light);
        padding-bottom: 12px;
      }
      .cta-stage {
        padding: 36px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }