/* roulang page: index */
:root {
      --bg-main: #F8F9FA;
      --bg-alt: #F1F3F5;
      --bg-card: #FFFFFF;
      --bg-dark: #0D1117;
      --bg-dark-card: #161B22;
      --text-title: #111827;
      --text-body: #374151;
      --text-muted: #6B7280;
      --text-inverse: #F9FAFB;
      --brand-primary: #1A1F2C;
      --brand-accent: #00E599;
      --brand-accent-hover: #00C784;
      --brand-highlight: #FF5A1F;
      --border-light: rgba(0, 0, 0, 0.08);
      --border-dark: rgba(255, 255, 255, 0.12);
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
      --shadow-glow: 0 0 20px rgba(0, 229, 153, 0.25);
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      --max-w: 1240px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
    }

    .container {
      width: 100%;
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部双行导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      transition: var(--transition);
    }

    .top-bar {
      background: var(--brand-primary);
      color: #9CA3AF;
      font-size: 0.8125rem;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

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

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

    .top-meta-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }

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

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--brand-primary);
      letter-spacing: -0.5px;
    }

    .brand-logo-icon {
      width: 32px;
      height: 32px;
      background: var(--brand-primary);
      color: var(--brand-accent);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      font-weight: 900;
      border: 1px solid rgba(0, 229, 153, 0.4);
    }

    .brand-badge {
      font-size: 0.6875rem;
      font-weight: 600;
      padding: 2px 6px;
      background: var(--bg-alt);
      color: var(--text-muted);
      border-radius: var(--radius-sm);
      margin-left: 6px;
    }

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

    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-body);
      position: relative;
      padding: 6px 0;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--brand-primary);
      font-weight: 600;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--brand-accent);
      transition: var(--transition);
    }

    .nav-link:hover::after {
      width: 100%;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 20px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-accent {
      background: var(--brand-accent);
      color: var(--brand-primary);
    }

    .btn-accent:hover {
      background: var(--brand-accent-hover);
      transform: translateY(-2px);
      box-shadow: var(--shadow-glow);
    }

    .btn-primary {
      background: var(--brand-primary);
      color: #FFFFFF;
    }

    .btn-primary:hover {
      background: #242B3D;
      transform: translateY(-2px);
    }

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

    .btn-outline:hover {
      background: var(--bg-alt);
      border-color: #D1D5DB;
    }

    .btn-outline-white {
      border-color: rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.05);
      color: #FFFFFF;
    }

    .btn-outline-white:hover {
      background: rgba(255, 255, 255, 0.15);
      border-color: #FFFFFF;
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--brand-primary);
    }

    /* 板块通用 */
    .section {
      padding: 100px 0;
      position: relative;
    }

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

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

    .section-header {
      margin-bottom: 56px;
    }

    .section-header.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--brand-primary);
      background: rgba(26, 31, 44, 0.08);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }

    .section-tag-dark {
      color: var(--brand-accent);
      background: rgba(0, 229, 153, 0.12);
      border: 1px solid rgba(0, 229, 153, 0.25);
    }

    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-title);
      line-height: 1.25;
      margin-bottom: 16px;
    }

    .section-dark .section-title {
      color: #FFFFFF;
    }

    .section-desc {
      font-size: 1.0625rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .section-dark .section-desc {
      color: #9CA3AF;
    }

    /* 板块一：Hero 叙事看板 */
    .hero-section {
      position: relative;
      background: #0B0E14;
      color: #FFFFFF;
      padding: 90px 0 110px;
      overflow: hidden;
    }

    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      opacity: 0.35;
      background-size: cover;
      background-position: center;
      filter: saturate(1.2);
    }

    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--brand-accent);
      margin-bottom: 24px;
    }

    .status-indicator {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--brand-accent);
      box-shadow: 0 0 10px var(--brand-accent);
    }

    .hero-title {
      font-size: 3.125rem;
      font-weight: 900;
      line-height: 1.15;
      letter-spacing: -1px;
      margin-bottom: 24px;
      color: #FFFFFF;
    }

    .hero-title span {
      background: linear-gradient(90deg, #FFFFFF 0%, #00E599 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 1.125rem;
      line-height: 1.75;
      color: #D1D5DB;
      margin-bottom: 36px;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
    }

    .hero-specs-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      padding-top: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
    }

    .hero-spec-item strong {
      display: block;
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--brand-accent);
      font-family: "JetBrains Mono", monospace;
    }

    .hero-spec-item span {
      font-size: 0.8125rem;
      color: #9CA3AF;
    }

    .hero-media-wrapper {
      position: relative;
      background: var(--bg-dark-card);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-dark);
      padding: 12px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    }

    .hero-media-box {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      aspect-ratio: 16 / 10;
    }

    .hero-media-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .tactical-box {
      position: absolute;
      border: 2px solid var(--brand-accent);
      border-radius: 4px;
      padding: 4px 8px;
      font-size: 0.6875rem;
      font-family: monospace;
      background: rgba(0, 0, 0, 0.65);
      color: #00E599;
      pointer-events: none;
    }

    .tactical-box-1 {
      top: 32%;
      left: 45%;
      width: 110px;
      height: 130px;
    }

    .tactical-box-2 {
      top: 50%;
      left: 18%;
      width: 90px;
      height: 110px;
      border-color: #FF5A1F;
      color: #FF5A1F;
    }

    .radar-tag {
      position: absolute;
      bottom: 12px;
      right: 12px;
      background: rgba(13, 17, 23, 0.85);
      backdrop-filter: blur(8px);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
      font-family: monospace;
      color: #D1D5DB;
      border: 1px solid var(--border-dark);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 板块二：传统拍摄痛点 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .pain-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      padding: 32px 24px;
      border-radius: var(--radius-md);
      transition: var(--transition);
      position: relative;
    }

    .pain-card:hover {
      transform: translateY(-4px);
      border-color: rgba(255, 90, 31, 0.4);
      box-shadow: var(--shadow-md);
    }

    .pain-num {
      font-size: 1.75rem;
      font-weight: 900;
      color: #E5E7EB;
      margin-bottom: 16px;
      font-family: monospace;
    }

    .pain-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 12px;
    }

    .pain-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块三：整体解决方案 */
    .solution-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .solution-feature-list {
      list-style: none;
      display: grid;
      gap: 20px;
      margin-top: 28px;
    }

    .solution-feature-item {
      display: flex;
      gap: 16px;
      background: var(--bg-card);
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
    }

    .feature-icon-box {
      flex-shrink: 0;
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: rgba(26, 31, 44, 0.05);
      color: var(--brand-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.125rem;
    }

    .feature-content h4 {
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 6px;
    }

    .feature-content p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    .solution-media {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-md);
    }

    .solution-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .tech-pill-row {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tech-pill {
      background: rgba(13, 17, 23, 0.88);
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(4px);
    }

    /* 板块四：部署四步流 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      padding: 32px 24px;
      border-radius: var(--radius-md);
      position: relative;
    }

    .step-index {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--brand-primary);
      color: var(--brand-accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 20px;
      font-family: monospace;
    }

    .step-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 12px;
    }

    .step-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块五：硬件分析终端 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }

    .product-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .product-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: rgba(26, 31, 44, 0.2);
    }

    .product-thumb {
      height: 240px;
      overflow: hidden;
      background: #000;
      position: relative;
    }

    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

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

    .product-badge {
      position: absolute;
      top: 16px;
      left: 16px;
      background: rgba(17, 24, 39, 0.85);
      color: var(--brand-accent);
      padding: 4px 10px;
      font-size: 0.75rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(0, 229, 153, 0.3);
    }

    .product-body {
      padding: 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .product-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 10px;
    }

    .product-summary {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .product-spec-list {
      list-style: none;
      border-top: 1px solid var(--border-light);
      padding-top: 16px;
      margin-bottom: 20px;
      display: grid;
      gap: 8px;
    }

    .product-spec-list li {
      font-size: 0.8125rem;
      color: var(--text-body);
      display: flex;
      justify-content: space-between;
    }

    .product-spec-list li span:first-child {
      color: var(--text-muted);
    }

    /* 板块六：六维技术优势 */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .adv-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      padding: 32px 28px;
      border-radius: var(--radius-md);
      transition: var(--transition);
    }

    .adv-card:hover {
      border-color: var(--brand-accent);
      box-shadow: 0 4px 16px rgba(0, 229, 153, 0.12);
      transform: translateY(-4px);
    }

    .adv-icon {
      font-size: 1.5rem;
      margin-bottom: 16px;
      display: inline-block;
    }

    .adv-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 10px;
    }

    .adv-text {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块七：算法理念区 */
    .algo-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .algo-ui-mockup {
      background: #090D12;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 20px;
      position: relative;
    }

    .algo-ui-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding-bottom: 12px;
      margin-bottom: 16px;
      font-size: 0.75rem;
      font-family: monospace;
      color: #9CA3AF;
    }

    .algo-screen {
      position: relative;
      border-radius: var(--radius-sm);
      overflow: hidden;
      aspect-ratio: 16 / 9;
      background: #000;
    }

    .algo-screen img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.8;
    }

    .heatmap-layer {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: radial-gradient(circle at 60% 40%, rgba(0, 229, 153, 0.35) 0%, transparent 45%),
                  radial-gradient(circle at 35% 65%, rgba(255, 90, 31, 0.3) 0%, transparent 40%);
      pointer-events: none;
    }

    .algo-stats-box {
      margin-top: 16px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
    }

    .algo-stat-item {
      background: rgba(255, 255, 255, 0.04);
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.06);
    }

    .algo-stat-item span {
      display: block;
      font-size: 0.75rem;
      color: #9CA3AF;
    }

    .algo-stat-item strong {
      font-size: 1.125rem;
      color: var(--brand-accent);
      font-family: "JetBrains Mono", monospace;
    }

    .algo-points-list {
      list-style: none;
      display: grid;
      gap: 20px;
      margin-top: 28px;
    }

    .algo-point-item {
      display: flex;
      gap: 16px;
    }

    .algo-point-num {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(0, 229, 153, 0.15);
      border: 1px solid var(--brand-accent);
      color: var(--brand-accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8125rem;
      font-weight: 700;
      flex-shrink: 0;
      margin-top: 2px;
    }

    .algo-point-text h4 {
      font-size: 1.0625rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 6px;
    }

    .algo-point-text p {
      font-size: 0.9375rem;
      color: #9CA3AF;
      line-height: 1.6;
    }

    /* 板块八：应用场景 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .scenario-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .scenario-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .scenario-img-box {
      height: 180px;
      overflow: hidden;
      background: #000;
    }

    .scenario-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

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

    .scenario-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 10px;
    }

    .scenario-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

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

    .scenario-tag {
      font-size: 0.6875rem;
      background: var(--bg-alt);
      color: var(--text-body);
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
    }

    /* 板块九：实战效能数据 */
    .metrics-bar-section {
      background: var(--brand-primary);
      color: #FFFFFF;
      padding: 60px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }

    .metric-card {
      position: relative;
    }

    .metric-card:not(:last-child)::after {
      content: '';
      position: absolute;
      right: -16px;
      top: 15%;
      height: 70%;
      width: 1px;
      background: rgba(255, 255, 255, 0.12);
    }

    .metric-value {
      font-size: 2.75rem;
      font-weight: 900;
      color: var(--brand-accent);
      line-height: 1.1;
      margin-bottom: 8px;
      font-family: "JetBrains Mono", monospace;
    }

    .metric-label {
      font-size: 1rem;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 6px;
    }

    .metric-desc {
      font-size: 0.8125rem;
      color: #9CA3AF;
    }

    /* 板块十：客户故事与教练评价 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .testimonial-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }

    .testimonial-quote {
      font-size: 0.9375rem;
      line-height: 1.7;
      color: var(--text-body);
      margin-bottom: 24px;
      font-style: normal;
    }

    .testimonial-author-row {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-light);
      padding-top: 18px;
    }

    .testimonial-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--brand-primary);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9375rem;
    }

    .testimonial-meta h5 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-title);
    }

    .testimonial-meta span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 板块十一：技术动态与资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .news-thumb {
      height: 190px;
      overflow: hidden;
    }

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

    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .news-tag {
      color: var(--brand-primary);
      font-weight: 600;
      background: rgba(26, 31, 44, 0.06);
      padding: 2px 8px;
      border-radius: 2px;
    }

    .news-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .news-summary {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 板块十二：FAQ 手风琴 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }

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

    .faq-question {
      padding: 20px 24px;
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--text-title);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-icon {
      font-size: 1.25rem;
      line-height: 1;
      color: var(--brand-primary);
      transition: transform 0.3s ease;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #FAFAFA;
      color: var(--text-body);
      font-size: 0.9375rem;
      line-height: 1.7;
      padding: 0 24px;
    }

    .faq-item.open .faq-answer {
      max-height: 300px;
      padding: 0 24px 20px 24px;
      border-top: 1px solid var(--border-light);
    }

    /* 板块十三：综合收口 CTA */
    .cta-card {
      background: var(--brand-primary);
      color: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 60px;
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 56px;
      align-items: center;
      border: 1px solid rgba(255, 255, 255, 0.12);
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    }

    .cta-left h3 {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 20px;
      color: #FFFFFF;
    }

    .cta-left p {
      font-size: 1.0625rem;
      color: #D1D5DB;
      line-height: 1.7;
      margin-bottom: 28px;
    }

    .cta-features {
      list-style: none;
      display: grid;
      gap: 12px;
    }

    .cta-features li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.9375rem;
      color: #E5E7EB;
    }

    .cta-features li::before {
      content: '✓';
      display: inline-flex;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--brand-accent);
      color: var(--brand-primary);
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: 800;
    }

    .cta-form {
      background: #FFFFFF;
      padding: 36px;
      border-radius: var(--radius-md);
      color: var(--text-title);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-title);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.9375rem;
      border: 1px solid #D1D5DB;
      border-radius: var(--radius-sm);
      background: #F9FAFB;
      color: var(--text-title);
      transition: var(--transition);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--brand-primary);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(26, 31, 44, 0.1);
    }

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

    /* 页脚 */
    .site-footer {
      background: #0D1117;
      color: #9CA3AF;
      padding: 80px 0 36px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.875rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 56px;
    }

    .footer-brand h4 {
      font-size: 1.25rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
      font-size: 0.875rem;
    }

    .footer-title {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
    }

    .footer-links {
      list-style: none;
      display: grid;
      gap: 12px;
    }

    .footer-links a {
      color: #9CA3AF;
    }

    .footer-links a:hover {
      color: var(--brand-accent);
      padding-left: 4px;
    }

    .footer-contact-item {
      display: flex;
      gap: 10px;
      margin-bottom: 14px;
      line-height: 1.5;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
    }

    .footer-copy {
      color: #6B7280;
    }

    .footer-badges {
      display: flex;
      gap: 16px;
    }

    .cert-pill {
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 4px 10px;
      border-radius: 2px;
      font-size: 0.6875rem;
      color: #9CA3AF;
    }

    /* 移动端菜单抽屉 */
    .mobile-drawer {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(13, 17, 23, 0.98);
      backdrop-filter: blur(16px);
      z-index: 2000;
      display: flex;
      flex-direction: column;
      padding: 32px 24px;
      transform: translateX(100%);
      transition: transform 0.3s ease;
    }

    .mobile-drawer.open {
      transform: translateX(0);
    }

    .drawer-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 40px;
    }

    .drawer-close {
      background: none;
      border: none;
      font-size: 2rem;
      color: #FFFFFF;
      cursor: pointer;
    }

    .drawer-menu {
      list-style: none;
      display: grid;
      gap: 24px;
    }

    .drawer-link {
      font-size: 1.25rem;
      font-weight: 700;
      color: #FFFFFF;
      display: block;
    }

    .drawer-link:hover {
      color: var(--brand-accent);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .pain-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solution-box {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .algo-container {
        grid-template-columns: 1fr;
      }
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 20px;
      }
      .metric-card:nth-child(2)::after {
        display: none;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cta-card {
        grid-template-columns: 1fr;
        padding: 40px 30px;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu, .nav-actions .btn {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2.25rem;
      }
      .hero-specs-row {
        grid-template-columns: 1fr;
        gap: 16px;
      }
      .pain-grid {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .products-grid {
        grid-template-columns: 1fr;
      }
      .advantage-grid {
        grid-template-columns: 1fr;
      }
      .scenario-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: 1fr;
      }
      .metric-card::after {
        display: none !important;
      }
      .testimonials-grid {
        grid-template-columns: 1fr;
      }
      .news-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .section {
        padding: 64px 0;
      }
    }