/* roulang page: index */
:root {
      --bg-dark: #0B131F;
      --bg-dark-card: #131E2E;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --color-primary: #FF5500;
      --color-primary-hover: #E04B00;
      --color-accent: #00E599;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --text-light: #E2E8F0;
      --text-dim: #94A3B8;
      --border-light: #E2E8F0;
      --border-dark: #1E293B;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 8px rgba(11, 19, 31, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(11, 19, 31, 0.08), 0 8px 10px -6px rgba(11, 19, 31, 0.04);
      --shadow-glow: 0 0 20px rgba(255, 85, 0, 0.25);
      --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    a { text-decoration: none; color: inherit; transition: all 0.2s ease; }
    ul { list-style: none; }
    img { max-width: 100%; height: auto; display: block; }
    button, input, textarea { font-family: inherit; }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .top-utility-bar {
      background-color: #070D16;
      color: var(--text-dim);
      font-size: 0.85rem;
      border-bottom: 1px solid var(--border-dark);
      padding: 6px 0;
    }
    .top-utility-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background: var(--color-accent);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--color-accent);
    }
    
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(11, 19, 31, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 70px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #FFF;
      font-size: 1.15rem;
      font-weight: 700;
      letter-spacing: -0.5px;
    }
    .brand-logo-badge {
      background: linear-gradient(135deg, var(--color-primary), #FF8800);
      color: #FFF;
      width: 32px;
      height: 32px;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1rem;
    }
    .nav-menu {
      display: flex;
      gap: 28px;
      align-items: center;
    }
    .nav-menu a {
      color: var(--text-dim);
      font-size: 0.95rem;
      font-weight: 500;
    }
    .nav-menu a:hover {
      color: var(--color-primary);
    }
    .nav-cta-btn {
      background: var(--color-primary);
      color: #FFF;
      padding: 9px 22px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.9rem;
      display: inline-flex;
      align-items: center;
      box-shadow: var(--shadow-glow);
    }
    .nav-cta-btn:hover {
      background: var(--color-primary-hover);
      transform: translateY(-1px);
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
    }
    .btn-primary {
      background: var(--color-primary);
      color: #FFF;
    }
    .btn-primary:hover {
      background: var(--color-primary-hover);
      box-shadow: var(--shadow-glow);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.08);
      color: #FFF;
      border-color: rgba(255, 255, 255, 0.2);
    }
    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.15);
      border-color: #FFF;
    }

    /* 区域基类 */
    section.biz-section {
      padding: 85px 0;
      position: relative;
    }
    .section-head {
      margin-bottom: 50px;
      max-width: 760px;
    }
    .section-head.center {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      font-weight: 700;
      color: var(--color-primary);
      background: rgba(255, 85, 0, 0.1);
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 1.05rem;
      line-height: 1.7;
    }
    .bg-dark-layer {
      background-color: var(--bg-dark);
      color: #FFF;
    }
    .bg-dark-layer .section-title { color: #FFF; }
    .bg-dark-layer .section-desc { color: var(--text-dim); }

    /* 板块1：Hero看板 */
    .hero-wrapper {
      position: relative;
      background: linear-gradient(180deg, var(--bg-dark) 0%, #111C2E 100%);
      color: #FFF;
      padding: 80px 0 100px 0;
      overflow: hidden;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .hero-bg-overlay {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/28ff3792599e7835.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.12;
      pointer-events: none;
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-badge-live {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(0, 229, 153, 0.1);
      border: 1px solid rgba(0, 229, 153, 0.3);
      padding: 6px 14px;
      border-radius: 999px;
      color: var(--color-accent);
      font-size: 0.85rem;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }
    .hero-title span {
      background: linear-gradient(135deg, #FFF 40%, var(--text-dim) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-p {
      color: var(--text-dim);
      font-size: 1.1rem;
      margin-bottom: 35px;
      max-width: 620px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-stat-row {
      display: flex;
      gap: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 25px;
    }
    .hero-stat-num {
      font-family: var(--font-mono);
      font-size: 1.6rem;
      font-weight: 700;
      color: #FFF;
      display: block;
    }
    .hero-stat-lbl {
      font-size: 0.85rem;
      color: var(--text-dim);
    }
    /* 拟真数据终端面板 */
    .telemetry-board {
      background: var(--bg-dark-card);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }
    .telemetry-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-dark);
      padding-bottom: 14px;
      margin-bottom: 18px;
    }
    .terminal-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-light);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .telemetry-tag {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(0, 229, 153, 0.15);
      color: var(--color-accent);
      font-family: var(--font-mono);
    }
    .telemetry-metrics-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 18px;
    }
    .metric-pill {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.06);
      padding: 14px;
      border-radius: var(--radius-sm);
    }
    .metric-pill .lbl { font-size: 0.8rem; color: var(--text-dim); }
    .metric-pill .val { font-size: 1.4rem; font-weight: 700; font-family: var(--font-mono); color: #FFF; margin-top: 4px; }
    .telemetry-chart-mock {
      background: #090E17;
      border-radius: var(--radius-sm);
      padding: 14px;
      border: 1px solid var(--border-dark);
    }
    .chart-bar-wrap {
      display: flex;
      align-items: flex-end;
      height: 90px;
      gap: 8px;
      padding-top: 10px;
    }
    .bar-col {
      flex: 1;
      background: rgba(255, 85, 0, 0.3);
      border-radius: 3px 3px 0 0;
      transition: height 0.3s;
      position: relative;
    }
    .bar-col:hover { background: var(--color-primary); }

    /* 板块2：全局实时指标 */
    .metrics-ticker-section {
      background: #0E1826;
      border-bottom: 1px solid var(--border-dark);
      padding: 35px 0;
      color: #FFF;
    }
    .ticker-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .ticker-item {
      border-left: 2px solid var(--color-primary);
      padding-left: 18px;
    }
    .ticker-num {
      font-family: var(--font-mono);
      font-size: 2.1rem;
      font-weight: 800;
      color: #FFF;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }
    .ticker-num small { font-size: 1rem; color: var(--color-accent); font-weight: normal; }
    .ticker-label {
      font-size: 0.9rem;
      color: var(--text-dim);
      margin-top: 4px;
    }

    /* 板块3：架构图文 */
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .arch-specs {
      margin-top: 25px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .arch-spec-item {
      display: flex;
      gap: 14px;
      align-items: flex-start;
    }
    .spec-icon-box {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(255, 85, 0, 0.1);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .arch-img-frame {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-light);
      position: relative;
    }

    /* 板块4：服务矩阵 (6核心) */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: all 0.3s;
      position: relative;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(255, 85, 0, 0.3);
    }
    .service-index {
      font-family: var(--font-mono);
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 12px;
    }
    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .service-card p {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.65;
    }

    /* 板块5：硬件与终端协同 (3大终端) */
    .hardware-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .hw-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .hw-thumb {
      height: 210px;
      overflow: hidden;
      background: #EEE;
    }
    .hw-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .hw-card:hover .hw-thumb img { transform: scale(1.05); }
    .hw-body {
      padding: 24px;
    }
    .hw-tag {
      font-size: 0.75rem;
      background: #F1F5F9;
      color: var(--text-muted);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
      display: inline-block;
      margin-bottom: 10px;
    }
    .hw-body h3 {
      font-size: 1.2rem;
      margin-bottom: 8px;
    }
    .hw-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块6：对比选型 */
    .table-compare-wrap {
      background: #FFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-light);
      font-size: 0.95rem;
    }
    .compare-table th {
      background: #F8FAFC;
      color: var(--text-main);
      font-weight: 700;
    }
    .compare-table tr:last-child td { border-bottom: none; }
    .compare-table .highlight-col {
      background: rgba(255, 85, 0, 0.03);
      font-weight: 600;
      color: var(--text-main);
      border-left: 2px solid var(--color-primary);
      border-right: 2px solid var(--color-primary);
    }
    .status-badge-old { color: #DC2626; font-size: 0.85rem; }
    .status-badge-new { color: #059669; font-weight: 600; font-size: 0.85rem; }

    /* 板块7：深色加密与链路 */
    .data-stream-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .stream-step-card {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .stream-step-card::after {
      content: "→";
      position: absolute;
      right: -14px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--color-primary);
      font-size: 1.4rem;
      font-weight: bold;
    }
    .stream-step-card:last-child::after { display: none; }
    .stream-step-no {
      font-family: var(--font-mono);
      font-size: 0.85rem;
      color: var(--color-accent);
      margin-bottom: 8px;
    }
    .stream-step-card h4 {
      font-size: 1.1rem;
      color: #FFF;
      margin-bottom: 8px;
    }
    .stream-step-card p {
      font-size: 0.88rem;
      color: var(--text-dim);
      line-height: 1.6;
    }

    /* 板块8：标杆应用案例 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .case-card {
      background: #FFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .case-img {
      height: 200px;
      overflow: hidden;
    }
    .case-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-content {
      padding: 24px;
    }
    .case-content h3 {
      font-size: 1.15rem;
      margin-bottom: 10px;
    }
    .case-metrics-badge {
      display: inline-block;
      background: #ECFDF5;
      color: #065F46;
      font-size: 0.8rem;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 4px;
      margin-bottom: 12px;
    }

    /* 板块9：发展里程碑 */
    .timeline-wrap {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
    }
    .timeline-wrap::before {
      content: "";
      position: absolute;
      left: 50%;
      top: 0;
      bottom: 0;
      width: 2px;
      background: var(--border-light);
      transform: translateX(-50%);
    }
    .timeline-item {
      display: flex;
      margin-bottom: 40px;
      position: relative;
    }
    .timeline-item:nth-child(odd) {
      flex-direction: row-reverse;
      text-align: right;
    }
    .timeline-item:nth-child(odd) .timeline-content {
      padding-right: 40px;
    }
    .timeline-item:nth-child(even) .timeline-content {
      padding-left: 40px;
    }
    .timeline-content {
      width: 50%;
    }
    .timeline-dot {
      position: absolute;
      left: 50%;
      top: 0;
      width: 16px;
      height: 16px;
      background: var(--color-primary);
      border-radius: 50%;
      transform: translate(-50%, 0);
      border: 3px solid #FFF;
      box-shadow: 0 0 0 3px rgba(255, 85, 0, 0.2);
    }
    .timeline-date {
      font-family: var(--font-mono);
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 6px;
    }
    .timeline-content h4 {
      font-size: 1.1rem;
      margin-bottom: 6px;
    }
    .timeline-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 板块10：口碑评价 */
    .feedback-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feedback-card {
      background: #FFF;
      border: 1px solid var(--border-light);
      padding: 30px;
      border-radius: var(--radius-md);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .feedback-text {
      font-size: 0.95rem;
      color: var(--text-main);
      font-style: italic;
      margin-bottom: 24px;
      line-height: 1.7;
    }
    .feedback-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: var(--text-muted);
    }
    .author-meta h5 { font-size: 0.95rem; }
    .author-meta span { font-size: 0.8rem; color: var(--text-muted); }

    /* 板块11：资讯列表 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .news-item {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-img {
      height:190px;
      overflow: hidden;
      background: #F1F5F9;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-item:hover .news-img img {
      transform: scale(1.06);
    }
    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
      font-size: 0.8rem;
      color: var(--text-dim);
    }
    .news-tag {
      color: var(--color-primary);
      background: rgba(255, 85, 0, 0.08);
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }
    .news-title {
      font-size: 1.15rem;
      line-height: 1.45;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .news-desc {
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.65;
      margin-bottom: 18px;
      flex: 1;
    }
    .news-anchor {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--color-primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块12：平台保障与安全 */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .security-card {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: all 0.3s ease;
    }
    .security-card:hover {
      border-color: var(--color-accent);
      box-shadow: var(--shadow-sm);
    }
    .security-badge {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: rgba(0, 229, 153, 0.12);
      color: #059669;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 16px;
      font-family: var(--font-mono);
    }
    .security-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .security-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块13：高频实务疑问 (FAQ手风琴) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color 0.25s ease;
    }
    .faq-item.active {
      border-color: var(--color-primary);
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #FFF;
      user-select: none;
    }
    .faq-toggle-icon {
      font-size: 1.25rem;
      color: var(--color-primary);
      transition: transform 0.3s ease;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #FAFBFD;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 220px;
      padding: 16px 24px 22px 24px;
      border-top: 1px solid var(--border-light);
    }

    /* 底部留资转化区 */
    .cta-banner-section {
      background: linear-gradient(135deg, #09101A 0%, #152438 100%);
      color: #FFF;
      padding: 70px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .cta-banner-inner {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .cta-lead-title {
      font-size: 2.1rem;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 16px;
    }
    .cta-lead-desc {
      color: var(--text-dim);
      font-size: 1rem;
      line-height: 1.7;
    }
    .cta-form-box {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 28px;
      border-radius: var(--radius-lg);
      backdrop-filter: blur(8px);
    }
    .form-group-row {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .form-input {
      width: 100%;
      padding: 13px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.18);
      background: rgba(11, 19, 31, 0.7);
      color: #FFF;
      font-size: 0.95rem;
      outline: none;
    }
    .form-input:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 10px rgba(255, 85, 0, 0.35);
    }
    .form-tip-text {
      font-size: 0.78rem;
      color: var(--text-dim);
      margin-top: 8px;
      text-align: center;
    }

    /* 页脚 */
    footer.site-footer {
      background: #060B12;
      color: var(--text-dim);
      padding: 60px 0 35px 0;
      border-top: 1px solid var(--border-dark);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 45px;
    }
    .footer-brand-summary p {
      margin-top: 14px;
      line-height: 1.7;
      max-width: 380px;
    }
    .footer-col h5 {
      color: #FFF;
      font-size: 1rem;
      margin-bottom: 18px;
      font-weight: 700;
    }
    .footer-links-list li {
      margin-bottom: 10px;
    }
    .footer-links-list a:hover {
      color: var(--color-primary);
    }
    .footer-contact-details li {
      margin-bottom: 10px;
      line-height: 1.6;
    }
    .footer-bottom-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 25px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      font-size: 0.85rem;
    }
    .footer-bottom-links {
      display: flex;
      gap: 20px;
    }

    /* 移动端汉堡切换 */
    .mobile-nav-toggle {
      display: none;
      background: none;
      border: none;
      color: #FFF;
      font-size: 1.6rem;
      cursor: pointer;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .ticker-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
      .service-grid, .hardware-grid, .case-grid, .feedback-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
      .security-grid { grid-template-columns: repeat(2, 1fr); }
      .hero-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .data-stream-grid { grid-template-columns: repeat(2, 1fr); }
      .stream-step-card::after { display: none; }
    }
    @media (max-width: 768px) {
      .top-utility-bar { display: none; }
      .mobile-nav-toggle { display: block; }
      .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #0B131F;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-dark);
        gap: 18px;
      }
      .nav-menu.open { display: flex; }
      .nav-cta-btn { display: none; }
      .arch-grid, .cta-banner-inner { grid-template-columns: 1fr; }
      .service-grid, .hardware-grid, .case-grid, .feedback-grid, .news-grid, .security-grid, .data-stream-grid { grid-template-columns: 1fr; }
      .ticker-grid { grid-template-columns: 1fr; }
      .hero-title { font-size: 2.1rem; }
      .section-title { font-size: 1.7rem; }
      .timeline-wrap::before { left: 20px; }
      .timeline-item, .timeline-item:nth-child(odd) { flex-direction: row; text-align: left; }
      .timeline-content, .timeline-item:nth-child(odd) .timeline-content, .timeline-item:nth-child(even) .timeline-content {
        width: 100%;
        padding-left: 50px;
        padding-right: 0;
      }
      .timeline-dot { left: 20px; }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    }