/* roulang page: index */
:root {
      --bg-primary: #050814;
      --bg-secondary: #080F24;
      --bg-card: rgba(15, 23, 42, 0.65);
      --bg-card-hover: rgba(20, 32, 60, 0.78);
      --text-main: #F8FAFC;
      --text-muted: #CBD5E1;
      --text-dim: #64748B;
      --cyan-bright: #00F2FE;
      --blue-accent: #4FACFE;
      --green-status: #10B981;
      --amber-warn: #F59E0B;
      --border-glow: rgba(0, 242, 254, 0.18);
      --border-bright: rgba(0, 242, 254, 0.45);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --container-max: 1280px;
      --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
      --shadow-glow: 0 0 24px rgba(0, 242, 254, 0.35);
      --transition: all 0.28s ease-in-out;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background: radial-gradient(circle at 50% -10%, #0c1a40 0%, var(--bg-primary) 70%);
      background-color: var(--bg-primary);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* 顶部信息栏 */
    .top-bar {
      background: rgba(5, 8, 20, 0.9);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 0.8125rem;
      color: var(--text-dim);
      padding: 0.45rem 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.75rem;
    }
    .top-bar-contacts {
      display: flex;
      align-items: center;
      gap: 1.25rem;
    }
    .top-bar-status {
      display: flex;
      align-items: center;
      gap: 1.25rem;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      color: var(--text-muted);
    }
    .pulse-dot {
      width: 7px;
      height: 7px;
      background: var(--green-status);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--green-status);
      animation: pulseAnim 2s infinite;
    }
    @keyframes pulseAnim {
      0% { opacity: 0.4; }
      50% { opacity: 1; }
      100% { opacity: 0.4; }
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(8, 15, 36, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-glow);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .site-brand {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      font-size: 1.25rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      color: var(--text-main);
    }
    .brand-icon {
      width: 34px;
      height: 34px;
      background: linear-gradient(135deg, var(--cyan-bright), var(--blue-accent));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #050814;
      font-weight: 900;
      font-size: 1.1rem;
      box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 1.75rem;
      list-style: none;
    }
    .nav-link {
      font-size: 0.9375rem;
      color: var(--text-muted);
      font-weight: 500;
      transition: var(--transition);
      position: relative;
      padding: 0.25rem 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--cyan-bright);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--cyan-bright);
      transition: var(--transition);
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }
    .nav-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.55rem 1.35rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.875rem;
      cursor: pointer;
      transition: var(--transition);
      border: none;
    }
    .btn-glow {
      background: linear-gradient(90deg, #00F2FE 0%, #4FACFE 100%);
      color: #050814;
      box-shadow: 0 0 18px rgba(0, 242, 254, 0.4);
    }
    .btn-glow:hover {
      box-shadow: 0 0 28px rgba(0, 242, 254, 0.7);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: transparent;
      color: var(--cyan-bright);
      border: 1px solid var(--border-bright);
      backdrop-filter: blur(8px);
    }
    .btn-outline:hover {
      background: rgba(0, 242, 254, 0.1);
      border-color: var(--cyan-bright);
    }
    .mobile-menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-glow);
      color: var(--text-main);
      padding: 0.4rem 0.65rem;
      border-radius: var(--radius-sm);
      font-size: 1.1rem;
      cursor: pointer;
    }

    /* 通用板块与排版 */
    section {
      padding: 5.5rem 0;
      position: relative;
    }
    .section-header {
      margin-bottom: 3.25rem;
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--cyan-bright);
      background: rgba(0, 242, 254, 0.1);
      border: 1px solid rgba(0, 242, 254, 0.25);
      padding: 0.25rem 0.85rem;
      border-radius: 999px;
      margin-bottom: 0.85rem;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 1rem;
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      font-size: 1.025rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-glass);
      transition: var(--transition);
    }
    .glass-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-bright);
      box-shadow: 0 12px 36px 0 rgba(0, 0, 0, 0.5);
    }

    /* 板块1：Hero 首屏 */
    .hero-section {
      padding: 4.5rem 0 5.5rem;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .hero-bg-cover {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.18;
      z-index: 0;
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 980px;
      margin: 0 auto;
    }
    .hero-title {
      font-size: 3.1rem;
      line-height: 1.22;
      font-weight: 800;
      letter-spacing: -0.8px;
      margin-bottom: 1.35rem;
      background: linear-gradient(180deg, #FFFFFF 30%, #A5C0EE 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-title .highlight {
      background: linear-gradient(90deg, #00F2FE 0%, #4FACFE 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 2.25rem;
      max-width: 860px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 1.25rem;
      flex-wrap: wrap;
      margin-bottom: 3.25rem;
    }
    .hero-actions .nav-btn {
      padding: 0.8rem 2rem;
      font-size: 1rem;
    }
    .hero-specs-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.25rem;
      margin-top: 1rem;
    }
    .hero-spec-item {
      padding: 1.25rem;
      text-align: left;
    }
    .hero-spec-label {
      font-size: 0.8125rem;
      color: var(--text-dim);
      margin-bottom: 0.35rem;
    }
    .hero-spec-val {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--cyan-bright);
    }
    .hero-spec-sub {
      font-size: 0.8125rem;
      color: var(--text-muted);
      margin-top: 0.25rem;
    }

    /* 板块2：KPI 看板指标条 */
    .kpi-section {
      padding: 3rem 0;
      background: rgba(8, 15, 36, 0.4);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .kpi-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .kpi-box {
      padding: 1.75rem;
      text-align: center;
      border-radius: var(--radius-md);
      position: relative;
    }
    .kpi-box::after {
      content: '';
      position: absolute;
      top: 0;
      left: 15%;
      right: 15%;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--cyan-bright), transparent);
    }
    .kpi-num {
      font-size: 2.75rem;
      font-weight: 800;
      color: #FFFFFF;
      line-height: 1.1;
      margin-bottom: 0.5rem;
      font-variant-numeric: tabular-nums;
    }
    .kpi-num span {
      font-size: 1.35rem;
      color: var(--cyan-bright);
      margin-left: 0.2rem;
    }
    .kpi-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 0.35rem;
    }
    .kpi-desc {
      font-size: 0.8125rem;
      color: var(--text-dim);
    }

    /* 板块3：架构概览与多层技术解析 */
    .arch-section {
      background: var(--bg-primary);
    }
    .arch-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 2.5rem;
      align-items: center;
    }
    .arch-stack {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .stack-layer {
      padding: 1.35rem 1.65rem;
      border-left: 4px solid var(--cyan-bright);
    }
    .stack-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 0.4rem;
    }
    .stack-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .stack-badge {
      font-size: 0.75rem;
      color: var(--cyan-bright);
      background: rgba(0, 242, 254, 0.12);
      padding: 0.2rem 0.6rem;
      border-radius: var(--radius-sm);
    }
    .stack-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
    }
    .arch-media {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-glow);
    }
    .arch-img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    /* 板块4：核心优势赋能区 (6卡片) */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .feature-card {
      padding: 2rem 1.75rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .feat-icon-bar {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: rgba(0, 242, 254, 0.1);
      color: var(--cyan-bright);
      font-size: 1.25rem;
      font-weight: 800;
      border: 1px solid rgba(0, 242, 254, 0.2);
      margin-bottom: 1.25rem;
    }
    .feat-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .feat-desc {
      font-size: 0.9125rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块5：三大核心产品模组区 */
    .modules-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      align-items: stretch;
    }
    .module-card {
      padding: 2.25rem 1.85rem;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .module-card.featured {
      border: 1px solid var(--cyan-bright);
      box-shadow: var(--shadow-glow);
      background: rgba(18, 32, 68, 0.7);
    }
    .module-badge-top {
      position: absolute;
      top: -12px;
      right: 24px;
      background: linear-gradient(90deg, #00F2FE, #4FACFE);
      color: #050814;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.25rem 0.75rem;
      border-radius: 999px;
      text-transform: uppercase;
    }
    .module-name {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.85rem;
    }
    .module-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
      line-height: 1.65;
    }
    .module-items {
      list-style: none;
      margin-bottom: 2rem;
      flex-grow: 1;
    }
    .module-items li {
      position: relative;
      padding-left: 1.25rem;
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 0.65rem;
    }
    .module-items li::before {
      content: '✔';
      position: absolute;
      left: 0;
      top: 0;
      color: var(--cyan-bright);
      font-size: 0.8125rem;
    }

    /* 板块6：仿真孪生与控制台交互演示 */
    .demo-console-section {
      background: var(--bg-secondary);
    }
    .console-wrapper {
      padding: 2rem;
      border-radius: var(--radius-md);
      background: rgba(10, 18, 42, 0.9);
      border: 1px solid var(--border-glow);
    }
    .console-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 1.25rem;
      margin-bottom: 1.5rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .console-nodes {
      display: flex;
      gap: 1.5rem;
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .console-dashboard-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 1.5rem;
    }
    .telemetry-feed {
      background: rgba(5, 8, 20, 0.6);
      border-radius: var(--radius-sm);
      padding: 1.25rem;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 0.8125rem;
      border: 1px solid rgba(255, 255, 255, 0.04);
      height: 280px;
      overflow-y: hidden;
      display: flex;
      flex-direction: column;
      gap: 0.6rem;
    }
    .log-line {
      display: flex;
      gap: 0.75rem;
    }
    .log-time { color: var(--text-dim); }
    .log-topic { color: var(--cyan-bright); }
    .log-data { color: var(--text-muted); }
    .side-telemetry {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .signal-card {
      background: rgba(15, 23, 42, 0.65);
      border: 1px solid var(--border-glow);
      padding: 1rem;
      border-radius: var(--radius-sm);
    }
    .signal-title {
      font-size: 0.8125rem;
      color: var(--text-dim);
      margin-bottom: 0.25rem;
    }
    .signal-val {
      font-size: 1.25rem;
      font-weight: 700;
      color: #FFFFFF;
    }
    .signal-status {
      font-size: 0.75rem;
      color: var(--green-status);
      margin-top: 0.25rem;
    }

    /* 板块7：行业落地场景矩阵 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .scenario-card {
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .scenario-img-wrap {
      height: 180px;
      overflow: hidden;
      position: relative;
    }
    .scenario-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .scenario-card:hover .scenario-img {
      transform: scale(1.05);
    }
    .scenario-body {
      padding: 1.5rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .scenario-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.65rem;
    }
    .scenario-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块8：传统架构 vs 肯弗车联网平台结果对比 */
    .comparison-section {
      background: var(--bg-secondary);
    }
    .compare-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-glow);
    }
    .compare-table th, .compare-table td {
      padding: 1.25rem 1.5rem;
      text-align: left;
      font-size: 0.9375rem;
    }
    .compare-table th {
      background: rgba(15, 23, 42, 0.9);
      color: var(--text-main);
      font-weight: 700;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .compare-table th:nth-child(2) {
      color: var(--text-dim);
    }
    .compare-table th:nth-child(3) {
      color: var(--cyan-bright);
      background: rgba(0, 242, 254, 0.08);
      border-bottom: 1px solid var(--cyan-bright);
    }
    .compare-table tr {
      background: rgba(10, 18, 42, 0.5);
    }
    .compare-table tr:nth-child(even) {
      background: rgba(15, 23, 42, 0.65);
    }
    .compare-table td:nth-child(3) {
      color: #FFFFFF;
      font-weight: 600;
      background: rgba(0, 242, 254, 0.04);
    }

    /* 板块9：发展里程碑与技术演进史 */
    .timeline-wrap {
      position: relative;
      max-width: 960px;
      margin: 0 auto;
    }
    .timeline-wrap::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: var(--border-bright);
      transform: translateX(-50%);
    }
    .timeline-item {
      position: relative;
      margin-bottom: 2.5rem;
      width: 50%;
    }
    .timeline-item.left {
      left: 0;
      padding-right: 2.5rem;
      text-align: right;
    }
    .timeline-item.right {
      left: 50%;
      padding-left: 2.5rem;
      text-align: left;
    }
    .timeline-dot {
      position: absolute;
      top: 1.25rem;
      width: 14px;
      height: 14px;
      background: var(--cyan-bright);
      border-radius: 50%;
      box-shadow: 0 0 12px var(--cyan-bright);
      z-index: 2;
    }
    .timeline-item.left .timeline-dot {
      right: -7px;
    }
    .timeline-item.right .timeline-dot {
      left: -7px;
    }
    .timeline-card {
      padding: 1.5rem;
      display: inline-block;
      text-align: left;
    }
    .timeline-year {
      font-size: 0.8125rem;
      color: var(--cyan-bright);
      font-weight: 700;
      margin-bottom: 0.35rem;
    }
    .timeline-name {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .timeline-text {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块10：车联网技术动态与前沿资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .news-card {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1rem;
      font-size: 0.8125rem;
      color: var(--text-dim);
    }
    .news-tag {
      color: var(--cyan-bright);
      background: rgba(0, 242, 254, 0.1);
      padding: 0.2rem 0.5rem;
      border-radius: var(--radius-sm);
    }
    .news-heading {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      line-height: 1.45;
    }
    .news-summary {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }
    .news-anchor {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--cyan-bright);
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }

    /* 板块11：工业安全体系与权威合规背书 */
    .compliance-section {
      background: var(--bg-secondary);
    }
    .compliance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .compliance-box {
      padding: 1.75rem 1.5rem;
      text-align: center;
      border-radius: var(--radius-md);
      background: rgba(15, 23, 42, 0.5);
      border: 1px solid var(--border-glow);
    }
    .compliance-icon {
      font-size: 2rem;
      color: var(--cyan-bright);
      margin-bottom: 0.75rem;
      display: inline-block;
    }
    .compliance-label {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .compliance-detail {
      font-size: 0.8125rem;
      color: var(--text-dim);
      line-height: 1.55;
    }

    /* 板块12：专家级解答 FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .faq-item {
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-md);
      background: var(--bg-card);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: var(--border-bright);
    }
    .faq-summary {
      padding: 1.35rem 1.75rem;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      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 {
      color: var(--cyan-bright);
      font-weight: 700;
      transition: var(--transition);
    }
    details[open] .faq-icon-arrow {
      transform: rotate(90deg);
    }
    .faq-body {
      padding: 0 1.75rem 1.35rem;
      font-size: 0.9125rem;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      padding-top: 1rem;
    }

    /* 板块13：商业授权与接入转化轻表单 */
    .cta-section {
      padding: 6rem 0;
      background: radial-gradient(circle at 50% 50%, #0d1e4c 0%, var(--bg-primary) 80%);
    }
    .cta-panel {
      padding: 3.5rem 3rem;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-bright);
      box-shadow: 0 0 40px rgba(0, 242, 254, 0.2);
      max-width: 960px;
      margin: 0 auto;
      background: rgba(13, 27, 62, 0.6);
      backdrop-filter: blur(20px);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .cta-info-title {
      font-size: 2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 1rem;
      color: #FFFFFF;
    }
    .cta-info-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 1.5rem;
    }
    .cta-assurances {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
      font-size: 0.85rem;
      color: var(--text-dim);
    }
    .cta-form {
      display: flex;
      flex-direction: column;
      gap: 1.15rem;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
    }
    .form-label {
      font-size: 0.8125rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .form-input, .form-select {
      background: rgba(5, 8, 20, 0.7);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-sm);
      padding: 0.75rem 1rem;
      color: #FFFFFF;
      font-size: 0.875rem;
      outline: none;
      transition: var(--transition);
    }
    .form-input:focus, .form-select:focus {
      border-color: var(--cyan-bright);
      box-shadow: 0 0 10px rgba(0, 242, 254, 0.35);
    }
    .form-select option {
      background: #080F24;
      color: #FFFFFF;
    }
    .form-submit-btn {
      width: 100%;
      padding: 0.85rem;
      font-size: 1rem;
      margin-top: 0.5rem;
    }

    /* 页脚系统 */
    .site-footer {
      background: #03050c;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 4.5rem 0 2rem;
      font-size: 0.875rem;
      color: var(--text-dim);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 2.5rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .footer-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.25rem;
      max-width: 320px;
    }
    .footer-col-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 1.15rem;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .footer-links a {
      color: var(--text-muted);
      transition: var(--transition);
    }
    .footer-links a:hover {
      color: var(--cyan-bright);
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 1.75rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8125rem;
    }
    .footer-icp {
      color: var(--text-dim);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-specs-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .features-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .modules-grid {
        grid-template-columns: 1fr;
      }
      .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .compliance-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cta-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .arch-grid {
        grid-template-columns: 1fr;
      }
      .timeline-wrap::before {
        left: 20px;
      }
      .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 3rem !important;
        padding-right: 0 !important;
        text-align: left !important;
      }
      .timeline-item .timeline-dot {
        left: 14px !important;
        right: auto !important;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .hero-title {
        font-size: 2.2rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .nav-links {
        display: none;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .console-dashboard-grid {
        grid-template-columns: 1fr;
      }
      .features-grid {
        grid-template-columns: 1fr;
      }
      .scenarios-grid {
        grid-template-columns: 1fr;
      }
      .news-grid {
        grid-template-columns: 1fr;
      }
      .compliance-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-panel {
        padding: 2rem 1.5rem;
      }
    }