/* roulang page: index */
:root {
      --bg-main: #0A0D14;
      --bg-secondary: #121622;
      --bg-card: #181E2E;
      --bg-card-hover: #1f273d;
      --primary-cyan: #00F2FE;
      --accent-purple: #7B2CBF;
      --accent-magenta: #9D4EDD;
      --text-white: #FFFFFF;
      --text-silver: #94A3B8;
      --text-muted: #64748B;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-active: rgba(0, 242, 254, 0.4);
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --radius-xl: 16px;
      --shadow-glow: 0 10px 25px -5px rgba(0, 242, 254, 0.15);
      --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.4);
      --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-main);
      color: var(--text-silver);
      font-family: var(--font-stack);
      line-height: 1.75;
    }

    body {
      background-color: var(--bg-main);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.3s ease, border-color 0.3s ease;
    }

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部微通栏与双行导航 */
    .header-wrapper {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 13, 20, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
    }

    .top-sub-bar {
      background: #06080d;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
      font-size: 13px;
      color: var(--text-muted);
      padding: 6px 0;
    }

    .top-sub-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .top-sub-bar span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .status-dot {
      width: 8px;
      height: 8px;
      background: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 8px #10B981;
      display: inline-block;
    }

    .nav-main {
      padding: 16px 0;
    }

    .nav-main .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 18px;
      font-weight: 700;
      color: var(--text-white);
      letter-spacing: 0.5px;
    }

    .brand-logo-badge {
      background: linear-gradient(135deg, var(--primary-cyan), var(--accent-purple));
      color: #000;
      font-size: 12px;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-weight: 800;
    }

    .nav-links {
      display: flex;
      list-style: none;
      gap: 28px;
      align-items: center;
    }

    .nav-links li a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-silver);
      position: relative;
      padding: 6px 0;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary-cyan);
    }

    .nav-links li a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary-cyan);
      transition: width 0.3s ease;
    }

    .nav-links li a:hover::after,
    .nav-links li a.active::after {
      width: 100%;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 24px;
      border-radius: var(--radius-md);
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      border: 1px solid transparent;
      gap: 8px;
    }

    .btn-primary {
      background: var(--primary-cyan);
      color: #06090e;
      box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
    }

    .btn-primary:hover {
      background: #38f6ff;
      box-shadow: 0 6px 20px rgba(0, 242, 254, 0.45);
      transform: translateY(-2px);
    }

    .btn-outline {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-white);
      border: 1px solid var(--border-subtle);
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--primary-cyan);
      color: var(--primary-cyan);
    }

    .btn-block {
      width: 100%;
    }

    /* 板块通用间距与标题 */
    section {
      padding: 96px 0;
      position: relative;
    }

    .section-alt {
      background-color: var(--bg-secondary);
      border-top: 1px solid var(--border-subtle);
      border-bottom: 1px solid var(--border-subtle);
    }

    .section-header {
      margin-bottom: 48px;
    }

    .section-header.text-center {
      text-align: center;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-tag {
      display: inline-block;
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary-cyan);
      background: rgba(0, 242, 254, 0.1);
      border: 1px solid rgba(0, 242, 254, 0.2);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      font-weight: 600;
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-white);
      line-height: 1.3;
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-silver);
      line-height: 1.7;
    }

    /* Hero 板块：预约与服务体验版式 */
    .hero-section {
      padding: 80px 0 100px;
      background: radial-gradient(circle at 80% 20%, rgba(123, 44, 191, 0.18), transparent 50%),
                  radial-gradient(circle at 20% 80%, rgba(0, 242, 254, 0.12), transparent 50%),
                  var(--bg-main);
      border-bottom: 1px solid var(--border-subtle);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-white);
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }

    .hero-content h1 span {
      background: linear-gradient(90deg, #FFFFFF, var(--primary-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 16px;
      color: var(--text-silver);
      margin-bottom: 32px;
      line-height: 1.8;
    }

    .hero-badges-row {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-badge-item {
      display: flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-subtle);
      padding: 8px 14px;
      border-radius: var(--radius-md);
      font-size: 13px;
      color: var(--text-white);
    }

    .hero-badge-item b {
      color: var(--primary-cyan);
    }

    /* 首屏预约与时段选择交互卡片 */
    .booking-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-xl);
      padding: 32px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
      position: relative;
    }

    .booking-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 10%;
      right: 10%;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--primary-cyan), transparent);
    }

    .booking-title {
      font-size: 20px;
      color: var(--text-white);
      font-weight: 700;
      margin-bottom: 8px;
    }

    .booking-subtitle {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .booking-form-group {
      margin-bottom: 20px;
    }

    .booking-label {
      display: block;
      font-size: 13px;
      font-weight: 500;
      color: var(--text-silver);
      margin-bottom: 8px;
    }

    .slot-selector-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-bottom: 16px;
    }

    .slot-item {
      padding: 10px;
      text-align: center;
      background: var(--bg-secondary);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      cursor: pointer;
      font-size: 13px;
      color: var(--text-silver);
      transition: all 0.2s ease;
    }

    .slot-item:hover, .slot-item.active {
      border-color: var(--primary-cyan);
      background: rgba(0, 242, 254, 0.08);
      color: var(--primary-cyan);
      font-weight: 600;
    }

    .custom-input {
      width: 100%;
      background: var(--bg-secondary);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 12px 16px;
      color: var(--text-white);
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .custom-input:focus {
      border-color: var(--primary-cyan);
      box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.15);
    }

    /* 痛点拆解板块 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .pain-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 32px;
      position: relative;
      overflow: hidden;
    }

    .pain-card::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: #EF4444;
    }

    .pain-tag {
      font-size: 12px;
      color: #EF4444;
      font-weight: 600;
      margin-bottom: 12px;
      display: block;
    }

    .pain-title {
      font-size: 18px;
      color: var(--text-white);
      margin-bottom: 12px;
      font-weight: 700;
    }

    .pain-card p {
      font-size: 14px;
      color: var(--text-silver);
      line-height: 1.7;
    }

    /* 解决方案矩阵 */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .solution-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 32px;
      transition: all 0.3s ease;
    }

    .solution-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-active);
      box-shadow: var(--shadow-glow);
    }

    .solution-icon-box {
      width: 48px;
      height: 48px;
      background: rgba(0, 242, 254, 0.1);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-cyan);
      font-size: 20px;
      margin-bottom: 20px;
    }

    .solution-card h3 {
      font-size: 18px;
      color: var(--text-white);
      margin-bottom: 12px;
      font-weight: 700;
    }

    .solution-card p {
      font-size: 14px;
      color: var(--text-silver);
      line-height: 1.7;
      margin-bottom: 16px;
    }

    .feature-list {
      list-style: none;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 16px;
    }

    .feature-list li {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .feature-list li::before {
      content: '✓';
      color: var(--primary-cyan);
      font-weight: bold;
    }

    /* 场景演示板块 */
    .scenario-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      margin-bottom: 64px;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-xl);
      overflow: hidden;
      padding: 32px;
    }

    .scenario-item:last-child {
      margin-bottom: 0;
    }

    .scenario-item.reverse {
      direction: rtl;
    }

    .scenario-item.reverse .scenario-info {
      direction: ltr;
    }

    .scenario-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      background: #000;
      border: 1px solid rgba(255, 255, 255, 0.06);
    }

    .scenario-media img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .scenario-item:hover .scenario-media img {
      transform: scale(1.03);
    }

    .scenario-info h3 {
      font-size: 24px;
      color: var(--text-white);
      margin-bottom: 16px;
      font-weight: 700;
    }

    .scenario-info p {
      font-size: 15px;
      color: var(--text-silver);
      line-height: 1.75;
      margin-bottom: 24px;
    }

    .metric-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .metric-pill {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-subtle);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      color: var(--text-white);
    }

    .metric-pill span {
      color: var(--primary-cyan);
      font-weight: 700;
    }

    /* 深色沉浸监控大屏 */
    .dashboard-preview-box {
      background: #06080e;
      border: 1px solid rgba(0, 242, 254, 0.3);
      border-radius: var(--radius-xl);
      padding: 24px;
      box-shadow: 0 0 50px rgba(0, 242, 254, 0.1);
      position: relative;
    }

    .dashboard-header-mock {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 24px;
    }

    .dashboard-grid-mock {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 20px;
    }

    .stream-feed-placeholder {
      position: relative;
      height: 380px;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .stream-feed-placeholder img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: brightness(0.85);
    }

    .overlay-metrics {
      position: absolute;
      top: 16px;
      left: 16px;
      right: 16px;
      display: flex;
      justify-content: space-between;
      pointer-events: none;
    }

    .hud-tag {
      background: rgba(10, 13, 20, 0.85);
      border: 1px solid var(--primary-cyan);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      font-size: 12px;
      color: var(--primary-cyan);
      font-family: monospace;
    }

    .feed-side-widgets {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .widget-panel {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 16px;
      flex: 1;
    }

    .widget-panel h4 {
      font-size: 13px;
      color: var(--text-muted);
      text-transform: uppercase;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .stat-number {
      font-size: 26px;
      font-weight: 800;
      color: var(--text-white);
      margin-bottom: 4px;
    }

    .stat-bar {
      height: 6px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 3px;
      overflow: hidden;
      margin-top: 8px;
    }

    .stat-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--accent-purple), var(--primary-cyan));
    }

    /* 社会认同与指标条 */
    .stats-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
      margin-bottom: 64px;
    }

    .stat-strip-item {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 32px 20px;
    }

    .stat-strip-item .num {
      font-size: 36px;
      font-weight: 800;
      color: var(--primary-cyan);
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }

    .stat-strip-item .label {
      font-size: 14px;
      color: var(--text-silver);
    }

    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-quote {
      font-size: 14px;
      color: var(--text-silver);
      line-height: 1.7;
      margin-bottom: 24px;
      position: relative;
    }

    .review-quote::before {
      content: '“';
      font-size: 40px;
      color: var(--border-subtle);
      position: absolute;
      top: -20px;
      left: -10px;
      z-index: 0;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 16px;
    }

    .user-avatar-initial {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent-purple), var(--primary-cyan));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
      font-size: 16px;
    }

    .user-meta h4 {
      font-size: 14px;
      color: var(--text-white);
      margin-bottom: 2px;
    }

    .user-meta span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 资讯与技术前沿 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .news-card:hover {
      border-color: var(--border-active);
      transform: translateY(-4px);
    }

    .news-card-img {
      height: 180px;
      overflow: hidden;
    }

    .news-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .news-card-body {
      padding: 24px;
    }

    .news-date {
      font-size: 12px;
      color: var(--primary-cyan);
      margin-bottom: 8px;
      display: block;
    }

    .news-card h3 {
      font-size: 17px;
      color: var(--text-white);
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .news-card p {
      font-size: 13px;
      color: var(--text-silver);
      line-height: 1.6;
    }

    /* 套餐选型与对比 */
    .pricing-table-wrapper {
      overflow-x: auto;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-xl);
      padding: 32px;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .comparison-table th,
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 14px;
    }

    .comparison-table th {
      color: var(--text-white);
      background: rgba(255, 255, 255, 0.02);
      font-weight: 700;
    }

    .comparison-table th.highlight-col,
    .comparison-table td.highlight-col {
      background: rgba(0, 242, 254, 0.04);
      border-left: 1px solid rgba(0, 242, 254, 0.2);
      border-right: 1px solid rgba(0, 242, 254, 0.2);
      color: var(--text-white);
    }

    .comparison-table tr:hover td {
      background: rgba(255, 255, 255, 0.02);
    }

    .status-check {
      color: var(--primary-cyan);
      font-weight: bold;
    }

    .status-cross {
      color: var(--text-muted);
    }

    /* 安全体系保障卡片 */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .security-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 24px;
      transition: all 0.3s ease;
    }

    .security-card:hover {
      border-color: var(--border-active);
      transform: translateY(-3px);
    }

    .security-card .sec-icon {
      font-size: 24px;
      color: var(--primary-cyan);
      margin-bottom: 16px;
    }

    .security-card h3 {
      font-size: 16px;
      color: var(--text-white);
      margin-bottom: 8px;
    }

    .security-card p {
      font-size: 13px;
      color: var(--text-silver);
      line-height: 1.6;
    }

    /* FAQ 手风琴 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
      transition: border-color 0.3s ease;
    }

    .faq-item[open] {
      border-color: var(--border-active);
    }

    .faq-summary {
      padding: 20px 24px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-white);
      display: flex;
      justify-content: space-between;
      align-items: center;
      list-style: none;
      user-select: none;
    }

    .faq-summary::-webkit-details-marker {
      display: none;
    }

    .faq-arrow {
      width: 18px;
      height: 18px;
      fill: none;
      stroke: var(--primary-cyan);
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
      transition: transform 0.3s ease;
    }

    .faq-item[open] .faq-arrow {
      transform: rotate(180deg);
    }

    .faq-content {
      padding: 0 24px 20px 24px;
      color: var(--text-silver);
      font-size: 14px;
      line-height: 1.75;
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      padding-top: 16px;
    }

    /* 底部收口表单与咨询 */
    .contact-card-wrap {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-xl);
      padding: 48px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
    }

    .contact-info h3 {
      font-size: 28px;
      color: var(--text-white);
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .contact-info p {
      font-size: 15px;
      color: var(--text-silver);
      line-height: 1.8;
      margin-bottom: 32px;
    }

    .contact-badges {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contact-badge-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }

    .contact-badge-item .bullet {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary-cyan);
      margin-top: 7px;
      flex-shrink: 0;
    }

    .contact-badge-item div h4 {
      font-size: 15px;
      color: var(--text-white);
      margin-bottom: 2px;
    }

    .contact-badge-item div p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 0;
    }

    .form-layout {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .form-group-label {
      font-size: 13px;
      color: var(--text-silver);
      font-weight: 500;
      margin-bottom: 6px;
      display: block;
    }

    .form-row-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .checkbox-cluster {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }

    .checkbox-label {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-silver);
      cursor: pointer;
    }

    .checkbox-label input[type="checkbox"] {
      accent-color: var(--primary-cyan);
      width: 16px;
      height: 16px;
    }

    /* 页脚 */
    .site-footer {
      background: #06080d;
      border-top: 1px solid var(--border-subtle);
      padding: 64px 0 32px;
      font-size: 14px;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      margin-bottom: 48px;
    }

    .footer-brand h3 {
      font-size: 18px;
      color: var(--text-white);
      margin-bottom: 16px;
      font-weight: 700;
    }

    .footer-brand p {
      color: var(--text-muted);
      font-size: 13px;
      line-height: 1.8;
      margin-bottom: 20px;
    }

    .footer-heading {
      font-size: 15px;
      color: var(--text-white);
      font-weight: 600;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links li a {
      color: var(--text-muted);
      font-size: 13px;
      transition: color 0.2s ease;
    }

    .footer-links li a:hover {
      color: var(--primary-cyan);
    }

    .footer-meta-item {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      color: var(--text-muted);
      font-size: 12px;
    }

    .footer-bottom a {
      color: var(--text-muted);
      margin-left: 16px;
    }

    .footer-bottom a:hover {
      color: var(--primary-cyan);
    }

    /* 移动端汉堡切换与抽屉菜单 */
    .mobile-nav-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-subtle);
      color: var(--text-white);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 18px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid,
      .scenario-item,
      .scenario-item.reverse,
      .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .scenario-item.reverse {
        direction: ltr;
      }
      .stats-strip,
      .security-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
      .dashboard-grid-mock {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      section {
        padding: 60px 0;
      }
      .top-sub-bar {
        display: none;
      }
      .mobile-nav-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #0d111a;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-subtle);
        gap: 16px;
        align-items: flex-start;
      }
      .nav-links.active {
        display: flex;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .pain-grid,
      .solution-grid,
      .reviews-grid,
      .news-grid {
        grid-template-columns: 1fr;
      }
      .stats-strip,
      .security-grid {
        grid-template-columns: 1fr;
      }
      .slot-selector-grid {
        grid-template-columns: 1fr;
      }
      .form-row-2,
      .checkbox-cluster {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .contact-card-wrap {
        padding: 24px;
      }
    }

    @media (max-width: 520px) {
      .section-title {
        font-size: 24px;
      }
      .hero-badges-row {
        flex-direction: column;
      }
      .btn {
        width: 100%;
      }
      .header-actions {
        display: none;
      }
    }