/* roulang page: index */
:root {
      --bg-dark-core: #0B0F17;
      --bg-dark-panel: #111827;
      --bg-dark-card: #162032;
      --bg-light: #F8FAFC;
      --bg-light-alt: #F1F5F9;
      --color-primary: #0EA5E9;
      --color-primary-hover: #0284C7;
      --color-accent: #06B6D4;
      --color-success: #10B981;
      --color-warn: #F59E0B;
      --color-danger: #EF4444;
      --text-dark-primary: #0F172A;
      --text-dark-secondary: #475569;
      --text-dark-muted: #64748B;
      --text-light-primary: #F8FAFC;
      --text-light-secondary: #94A3B8;
      --text-light-muted: #64748B;
      --border-dark: #1E293B;
      --border-dark-light: #334155;
      --border-light: #E2E8F0;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --container-max: 1280px;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-soft: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
      --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.25);
    }

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

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

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

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

    /* 顶部双行导航系统 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(11, 15, 23, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-dark);
    }

    .status-bar {
      background: #06090F;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 13px;
      color: var(--text-light-secondary);
      padding: 6px 0;
    }

    .status-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .pulse-status {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--color-success);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--color-success);
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.2); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }

    .status-meta {
      display: flex;
      gap: 20px;
    }

    .nav-main {
      padding: 14px 0;
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--text-light-primary);
      letter-spacing: -0.5px;
    }

    .brand-logo-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 16px;
    }

    .nav-menu {
      display: flex;
      list-style: none;
      align-items: center;
      gap: 24px;
    }

    .nav-item {
      position: relative;
    }

    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-light-secondary);
      padding: 8px 4px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--color-accent);
    }

    /* 资源目录下拉面板 */
    .dropdown-panel {
      position: absolute;
      top: 100%;
      left: -20px;
      width: 290px;
      background: var(--bg-dark-panel);
      border: 1px solid var(--border-dark-light);
      border-radius: var(--radius-md);
      padding: 12px;
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
      display: none;
      flex-direction: column;
      gap: 8px;
      z-index: 101;
    }

    .nav-item:hover .dropdown-panel {
      display: flex;
    }

    .dropdown-item {
      padding: 10px 12px;
      border-radius: var(--radius-sm);
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid transparent;
      transition: all 0.2s;
    }

    .dropdown-item:hover {
      background: rgba(14, 165, 233, 0.1);
      border-color: rgba(14, 165, 233, 0.3);
    }

    .dropdown-item-title {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-light-primary);
      margin-bottom: 2px;
    }

    .dropdown-item-desc {
      font-size: 12px;
      color: var(--text-light-muted);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s ease;
      border: 1px solid transparent;
      line-height: 1.2;
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
      color: #fff;
      box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
    }

    .btn-primary:hover {
      filter: brightness(1.1);
      box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
    }

    .btn-primary:active {
      transform: scale(0.98);
    }

    .btn-outline {
      background: transparent;
      border-color: var(--border-dark-light);
      color: var(--text-light-primary);
    }

    .btn-outline:hover {
      border-color: var(--color-primary);
      background: rgba(14, 165, 233, 0.05);
      color: var(--color-accent);
    }

    /* Section 通用规范 */
    .section-spacing {
      padding: 88px 0;
    }

    .section-dark {
      background-color: var(--bg-dark-core);
      color: var(--text-light-primary);
      position: relative;
    }

    .section-dark-panel {
      background-color: var(--bg-dark-panel);
      color: var(--text-light-primary);
    }

    .section-light {
      background-color: var(--bg-light);
      color: var(--text-dark-primary);
    }

    .section-light-alt {
      background-color: var(--bg-light-alt);
      color: var(--text-dark-primary);
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }

    .section-header {
      margin-bottom: 50px;
      text-align: center;
    }

    .section-header.left-aligned {
      text-align: left;
    }

    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 14px;
      background: rgba(14, 165, 233, 0.12);
      color: var(--color-primary);
      border: 1px solid rgba(14, 165, 233, 0.25);
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: -0.5px;
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .section-subtitle {
      max-width: 760px;
      margin: 0 auto;
      font-size: 16px;
      color: var(--text-dark-secondary);
      line-height: 1.7;
    }

    .section-dark .section-subtitle,
    .section-dark-panel .section-subtitle {
      color: var(--text-light-secondary);
    }

    /* 1. Hero 区域 */
    .hero-section {
      background: radial-gradient(circle at 50% 10%, rgba(14, 165, 233, 0.15) 0%, transparent 60%), #0B0F17;
      color: #fff;
      padding: 80px 0 100px;
      border-bottom: 1px solid var(--border-dark);
      position: relative;
      overflow: hidden;
    }

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

    .hero-h1 {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -1px;
      margin-bottom: 20px;
      background: linear-gradient(180deg, #FFFFFF 30%, #94A3B8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 17px;
      color: var(--text-light-secondary);
      line-height: 1.8;
      margin-bottom: 28px;
    }

    .hero-checklist {
      list-style: none;
      margin-bottom: 36px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .hero-checklist li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: #E2E8F0;
    }

    .hero-checklist li span.icon-check {
      color: var(--color-success);
      font-weight: bold;
    }

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

    .hero-trust-bar {
      margin-top: 36px;
      padding-top: 24px;
      border-top: 1px solid var(--border-dark);
      display: flex;
      align-items: center;
      gap: 24px;
      font-size: 13px;
      color: var(--text-light-muted);
    }

    .hero-visual-card {
      background: var(--bg-dark-panel);
      border: 1px solid var(--border-dark-light);
      border-radius: var(--radius-lg);
      padding: 20px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.6);
      position: relative;
    }

    .dashboard-preview-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 12px;
      margin-bottom: 16px;
      border-bottom: 1px solid var(--border-dark);
      font-size: 13px;
      color: var(--text-light-secondary);
    }

    .dashboard-preview-img-wrapper {
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-dark);
      position: relative;
    }

    .dashboard-preview-img-wrapper img {
      width: 100%;
      height: 260px;
      object-fit: cover;
    }

    .preview-telemetry {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 16px;
    }

    .telemetry-node {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-sm);
      padding: 8px 12px;
      font-size: 12px;
    }

    .telemetry-node-val {
      font-size: 16px;
      font-weight: 700;
      color: var(--color-accent);
      margin-top: 4px;
    }

    /* 2. 行业视讯痛点诊断区 */
    .painpoint-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .painpoint-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-top: 4px solid #CBD5E1;
      border-radius: var(--radius-md);
      padding: 26px 20px;
      box-shadow: var(--shadow-soft);
      transition: all 0.3s ease;
    }

    .painpoint-card.alert-active {
      border-top-color: var(--color-danger);
    }

    .painpoint-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
    }

    .painpoint-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .painpoint-icon {
      width: 38px;
      height: 38px;
      border-radius: 8px;
      background: #FEE2E2;
      color: var(--color-danger);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 16px;
    }

    .painpoint-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-dark-primary);
    }

    .painpoint-body {
      font-size: 14px;
      color: var(--text-dark-secondary);
      line-height: 1.6;
    }

    /* 3. 视讯全栈架构解法区 */
    .solution-block {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 48px;
      align-items: center;
    }

    .solution-figure {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-dark-light);
      box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
    }

    .solution-figure img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .solution-steps {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .solution-step-item {
      display: flex;
      gap: 16px;
      padding: 16px;
      background: var(--bg-dark-panel);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-dark);
    }

    .step-index {
      font-size: 18px;
      font-weight: 800;
      color: var(--color-primary);
      min-width: 32px;
    }

    .step-content h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-light-primary);
      margin-bottom: 6px;
    }

    .step-content p {
      font-size: 13.5px;
      color: var(--text-light-secondary);
      line-height: 1.6;
    }

    /* 4. 视讯管理系统 6大核心优势网格 */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .advantage-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s ease;
      box-shadow: var(--shadow-soft);
    }

    .advantage-card:hover {
      border-color: var(--color-primary);
      box-shadow: 0 10px 24px rgba(14, 165, 233, 0.12);
      transform: translateY(-4px);
    }

    .adv-icon {
      width: 44px;
      height: 44px;
      background: rgba(14, 165, 233, 0.1);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-primary);
      font-size: 20px;
      font-weight: bold;
      margin-bottom: 18px;
    }

    .adv-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-dark-primary);
    }

    .adv-desc {
      font-size: 14px;
      color: var(--text-dark-secondary);
      line-height: 1.65;
    }

    /* 5. 热门管理套件三联对比区 */
    .packages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .package-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      display: flex;
      flex-direction: column;
      position: relative;
      box-shadow: var(--shadow-soft);
    }

    .package-card.highlight {
      border: 2px solid var(--color-primary);
      box-shadow: 0 16px 36px rgba(14, 165, 233, 0.18);
    }

    .package-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--color-primary);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 3px 14px;
      border-radius: 12px;
    }

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

    .pkg-desc {
      font-size: 13.5px;
      color: var(--text-dark-muted);
      margin-bottom: 20px;
      min-height: 40px;
    }

    .pkg-specs {
      list-style: none;
      margin-bottom: 28px;
      flex-grow: 1;
      border-top: 1px dashed var(--border-light);
      padding-top: 18px;
    }

    .pkg-specs li {
      font-size: 13.5px;
      color: var(--text-dark-secondary);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .pkg-specs li::before {
      content: "✓";
      color: var(--color-primary);
      font-weight: bold;
    }

    /* 6. 深色实控指挥中心与控制台理念区 */
    .console-hub {
      background: radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 60%), #0B0F17;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 90px 0;
      color: #fff;
    }

    .console-hub-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .hub-console-mockup {
      background: var(--bg-dark-panel);
      border: 1px solid var(--border-dark-light);
      border-radius: var(--radius-md);
      padding: 16px;
    }

    .hub-matrix-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
    }

    .hub-matrix-item {
      background: #000;
      border: 1px solid #1E293B;
      border-radius: 4px;
      position: relative;
      overflow: hidden;
      height: 120px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .hub-matrix-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.65;
    }

    .hub-matrix-tag {
      position: absolute;
      top: 6px;
      left: 6px;
      background: rgba(0, 0, 0, 0.7);
      padding: 2px 6px;
      font-size: 10px;
      color: #10B981;
      border-radius: 2px;
      border: 1px solid #10B981;
    }

    /* 7. 典型视讯场景区 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .scenario-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
    }

    .scenario-thumb {
      height: 190px;
      position: relative;
      overflow: hidden;
    }

    .scenario-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .scenario-card:hover .scenario-thumb img {
      transform: scale(1.05);
    }

    .scenario-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .scenario-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-dark-primary);
    }

    .scenario-text {
      font-size: 14px;
      color: var(--text-dark-secondary);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .scenario-tags {
      margin-top: auto;
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }

    .badge-pill {
      font-size: 11px;
      background: var(--bg-light-alt);
      color: var(--text-dark-muted);
      padding: 2px 8px;
      border-radius: 4px;
      border: 1px solid var(--border-light);
    }

    /* 8. 视讯核心指标看板 */
    .metrics-strip {
      background: linear-gradient(180deg, #111827 0%, #0B0F17 100%);
      color: #FFFFFF;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 60px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .metric-item {
      padding: 16px;
    }

    .metric-num {
      font-size: 40px;
      font-weight: 800;
      color: var(--color-primary);
      line-height: 1.1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }

    .metric-label {
      font-size: 15px;
      font-weight: 600;
      color: #F8FAFC;
      margin-bottom: 4px;
    }

    .metric-sub {
      font-size: 12px;
      color: var(--text-light-secondary);
    }

    /* 9. 客户评价与背书 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
    }

    .testi-stars {
      color: var(--color-warn);
      margin-bottom: 12px;
      font-size: 14px;
      letter-spacing: 2px;
    }

    .testi-quote {
      font-size: 14px;
      color: var(--text-dark-secondary);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-light);
      padding-top: 14px;
    }

    .testi-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: var(--text-dark-secondary);
    }

    .testi-meta h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-dark-primary);
    }

    .testi-meta p {
      font-size: 12px;
      color: var(--text-dark-muted);
    }

    /* 10. 视讯技术内嵌模块 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.2s ease;
    }

    .news-card:hover {
      border-color: var(--color-primary);
      transform: translateY(-3px);
      box-shadow: var(--shadow-soft);
    }

    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-dark-muted);
      margin-bottom: 12px;
    }

    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-dark-primary);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .news-excerpt {
      font-size: 13.5px;
      color: var(--text-dark-secondary);
      line-height: 1.6;
    }

    /* 11. FAQ 手风琴面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-dark-primary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      background: #FAFAFA;
      transition: background 0.2s;
    }

    .faq-question:hover {
      background: #F1F5F9;
    }

    .faq-answer {
      padding: 20px 24px;
      font-size: 14px;
      color: var(--text-dark-secondary);
      line-height: 1.7;
      border-top: 1px solid var(--border-light);
      background: #FFFFFF;
    }

    /* 12. 闭环收口 CTA 区 */
    .cta-section {
      background: linear-gradient(135deg, #0B0F17 0%, #162032 100%);
      color: #FFFFFF;
      padding: 70px 0;
      border-top: 1px solid var(--border-dark);
    }

    .cta-box {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-dark-light);
      border-radius: var(--radius-lg);
      padding: 40px;
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .cta-text h2 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 12px;
      color: #fff;
    }

    .cta-text p {
      font-size: 15px;
      color: var(--text-light-secondary);
      line-height: 1.7;
    }

    .cta-form {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .form-group-row {
      display: flex;
      gap: 10px;
    }

    .form-input {
      width: 100%;
      padding: 12px 14px;
      background: #0B0F17;
      border: 1px solid var(--border-dark-light);
      border-radius: var(--radius-sm);
      color: #fff;
      font-size: 14px;
      outline: none;
    }

    .form-input:focus {
      border-color: var(--color-primary);
    }

    /* 页脚系统 */
    .site-footer {
      background: #080C13;
      color: var(--text-light-secondary);
      border-top: 1px solid var(--border-dark);
      padding: 60px 0 30px;
      font-size: 13.5px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-brand h3 {
      color: #FFFFFF;
      font-size: 18px;
      margin-bottom: 14px;
      font-weight: 700;
    }

    .footer-col h4 {
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a:hover {
      color: var(--color-accent);
    }

    .footer-bottom {
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 12px;
      color: var(--text-light-muted);
    }

    /* 移动端与自适应断点 */
    @media (max-width: 1024px) {
      .hero-grid, .solution-block, .console-hub-grid, .cta-box {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .advantage-grid, .packages-grid, .scenario-grid, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .painpoint-grid, .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
      }
      .section-spacing {
        padding: 56px 0;
      }
      .hero-h1 {
        font-size: 30px;
      }
      .hero-checklist {
        grid-template-columns: 1fr;
      }
      .advantage-grid, .packages-grid, .scenario-grid, .testimonial-grid, .news-grid, .painpoint-grid, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .form-group-row {
        flex-direction: column;
      }
      .status-bar-inner {
        flex-direction: column;
        align-items: flex-start;
      }
    }