/* roulang page: index */
:root {
      --primary: #00E599;
      --primary-hover: #05C167;
      --secondary: #0A192F;
      --secondary-deep: #060D1A;
      --accent-blue: #0066FF;
      --accent-blue-hover: #0052CC;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --border-dark: #1E293B;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.05);
      --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.06), 0 8px 10px -6px rgba(0,0,0,0.04);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      scroll-behavior: smooth;
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.75;
      font-size: 16px;
    }

    body {
      overflow-x: hidden;
      width: 100%;
    }

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

    ul, ol {
      list-style: none;
    }

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
      outline: none;
      border: none;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 顶部微型信息条 */
    .top-bar {
      background-color: var(--secondary-deep);
      color: var(--text-light);
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 0.5rem 0;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-meta {
      display: flex;
      gap: 1.5rem;
    }
    .top-bar-meta span {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }
    .top-bar-meta a:hover {
      color: var(--primary);
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 25, 47, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo-wrapper {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 1.35rem;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: -0.02em;
    }
    .logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent-blue) 100%);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #05140d;
      font-weight: 900;
      font-size: 1.1rem;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
    }
    .nav-item {
      color: #E2E8F0;
      font-size: 0.95rem;
      font-weight: 500;
      position: relative;
      padding: 0.35rem 0;
    }
    .nav-item:hover, .nav-item.active {
      color: var(--primary);
    }
    .nav-item::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
    }
    .nav-item:hover::after, .nav-item.active::after {
      width: 100%;
    }
    .header-cta-btn {
      background: var(--primary);
      color: var(--secondary);
      font-weight: 700;
      font-size: 0.9rem;
      padding: 0.65rem 1.4rem;
      border-radius: var(--radius-md);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }
    .header-cta-btn:hover {
      background: var(--primary-hover);
      box-shadow: 0 0 15px rgba(0, 229, 153, 0.4);
      transform: translateY(-1px);
    }
    .mobile-menu-btn {
      display: none;
      background: transparent;
      color: #FFF;
      font-size: 1.5rem;
      cursor: pointer;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      padding: 0.85rem 1.8rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
    }
    .btn-primary {
      background: var(--primary);
      color: var(--secondary);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(0, 229, 153, 0.3);
    }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.1);
      color: #FFFFFF;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.2);
      border-color: #FFFFFF;
      transform: translateY(-2px);
    }
    .btn-blue {
      background: var(--accent-blue);
      color: #FFFFFF;
    }
    .btn-blue:hover {
      background: var(--accent-blue-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(0, 102, 255, 0.3);
    }

    /* 视觉标签 */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      padding: 0.3rem 0.8rem;
      border-radius: 9999px;
      font-size: 0.8125rem;
      font-weight: 600;
      letter-spacing: 0.02em;
    }
    .badge-primary {
      background: rgba(0, 229, 153, 0.15);
      color: var(--primary);
      border: 1px solid rgba(0, 229, 153, 0.3);
    }
    .badge-blue {
      background: rgba(0, 102, 255, 0.1);
      color: var(--accent-blue);
      border: 1px solid rgba(0, 102, 255, 0.2);
    }

    /* Section 通用容器与标题 */
    section {
      padding: 5.5rem 0;
      position: relative;
    }
    .section-header {
      max-width: 800px;
      margin: 0 auto 3.5rem auto;
      text-align: center;
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin: 0.75rem 0 1rem 0;
      line-height: 1.3;
      letter-spacing: -0.01em;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .section-dark {
      background-color: var(--secondary);
      color: #FFFFFF;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-dark .section-desc {
      color: var(--text-light);
    }
    .section-alt {
      background-color: #F1F5F9;
    }

    /* 板块 1: Hero Banner（沉浸暗底 + 大图背景 + 核心场景切片） */
    .hero-section {
      position: relative;
      background: linear-gradient(180deg, var(--secondary-deep) 0%, var(--secondary) 100%);
      color: #FFFFFF;
      padding: 5rem 0 6rem 0;
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      inset: 0;
      opacity: 0.22;
      background-image: url('/assets/images/2eca0d425ff6555c.jpg');
      background-size: cover;
      background-position: center;
      mix-blend-mode: luminosity;
      pointer-events: none;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3.5rem;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-content h1 {
      font-size: 2.85rem;
      font-weight: 900;
      line-height: 1.25;
      margin: 1.25rem 0 1.25rem 0;
      letter-spacing: -0.02em;
    }
    .hero-content h1 span {
      background: linear-gradient(135deg, var(--primary) 0%, #38BDF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.08rem;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 2rem;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      margin-bottom: 2.5rem;
    }
    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 1.75rem;
    }
    .hero-tag-item {
      font-size: 0.85rem;
      color: #94A3B8;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }
    .hero-tag-item::before {
      content: '✓';
      color: var(--primary);
      font-weight: bold;
    }
    .hero-media-box {
      position: relative;
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
      border: 1px solid rgba(255, 255, 255, 0.15);
      background: #020617;
    }
    .hero-media-box img {
      width: 100%;
      height: 440px;
      object-fit: cover;
      transition: transform 0.6s ease;
    }
    .hero-media-box:hover img {
      transform: scale(1.03);
    }
    .hero-floating-card {
      position: absolute;
      bottom: 1.5rem;
      left: 1.5rem;
      right: 1.5rem;
      background: rgba(10, 25, 47, 0.88);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(0, 229, 153, 0.3);
      border-radius: var(--radius-md);
      padding: 1rem 1.25rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .floating-card-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #FFFFFF;
    }
    .floating-card-info p {
      font-size: 0.8rem;
      color: var(--primary);
      margin: 0;
    }
    .floating-card-badge {
      background: var(--primary);
      color: var(--secondary);
      font-size: 0.75rem;
      font-weight: 800;
      padding: 0.25rem 0.6rem;
      border-radius: 4px;
    }

    /* 板块 2: 指标看板 (Data Dashboard) */
    .metrics-section {
      background: #FFFFFF;
      padding: 3.5rem 0;
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      margin-top: -1.5rem;
      position: relative;
      z-index: 10;
      border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
    }
    .metric-card {
      padding: 1.5rem;
      border-radius: var(--radius-lg);
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      text-align: center;
      transition: var(--transition);
    }
    .metric-card:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .metric-number {
      font-size: 2.6rem;
      font-weight: 900;
      color: var(--secondary);
      line-height: 1.1;
      margin-bottom: 0.4rem;
      font-variant-numeric: tabular-nums;
    }
    .metric-number span {
      font-size: 1.25rem;
      color: var(--accent-blue);
      font-weight: 700;
      margin-left: 2px;
    }
    .metric-label {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.25rem;
    }
    .metric-sub {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 板块 3: 品牌与产品底座介绍区 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: center;
    }
    .intro-image-wrap {
      position: relative;
      border-radius: var(--radius-xl);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-xl);
    }
    .intro-image-wrap img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .intro-tag-box {
      position: absolute;
      top: 1.25rem;
      right: 1.25rem;
      background: rgba(10, 25, 47, 0.9);
      color: var(--primary);
      font-size: 0.8rem;
      padding: 0.4rem 0.8rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }
    .intro-content h3 {
      font-size: 1.85rem;
      font-weight: 800;
      margin-bottom: 1.25rem;
      color: var(--text-main);
      line-height: 1.35;
    }
    .intro-specs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.25rem;
      margin: 1.75rem 0;
    }
    .spec-item {
      padding: 1rem;
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border-left: 3px solid var(--accent-blue);
      box-shadow: var(--shadow-sm);
    }
    .spec-item h5 {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 0.25rem;
    }
    .spec-item p {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--secondary);
    }

    /* 板块 4: 服务矩阵 / 核心优势区 (6 卡片) */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .matrix-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 2.25rem 1.75rem;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .matrix-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-xl);
      border-color: var(--primary);
    }
    .matrix-card-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background: rgba(0, 102, 255, 0.08);
      color: var(--accent-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      margin-bottom: 1.25rem;
      font-weight: bold;
    }
    .matrix-card:nth-child(even) .matrix-card-icon {
      background: rgba(0, 229, 153, 0.12);
      color: var(--primary-hover);
    }
    .matrix-card h4 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      color: var(--text-main);
    }
    .matrix-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }
    .matrix-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--accent-blue);
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }
    .matrix-link:hover {
      color: var(--primary-hover);
    }

    /* 板块 5: 热门产品应用矩阵 (3 列大卡) */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .product-edition-card {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
      position: relative;
    }
    .product-edition-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-xl);
      border-color: var(--accent-blue);
    }
    .product-edition-card.featured {
      border: 2px solid var(--primary);
    }
    .edition-ribbon {
      position: absolute;
      top: 1rem;
      right: 1rem;
      background: var(--primary);
      color: var(--secondary);
      font-size: 0.75rem;
      font-weight: 800;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
    }
    .product-edition-media {
      height: 200px;
      overflow: hidden;
      background: #E2E8F0;
    }
    .product-edition-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .product-edition-card:hover .product-edition-media img {
      transform: scale(1.05);
    }
    .product-edition-body {
      padding: 2rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .product-edition-body h4 {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .product-edition-body .target-text {
      font-size: 0.875rem;
      color: var(--accent-blue);
      font-weight: 600;
      margin-bottom: 1.25rem;
    }
    .feature-list {
      margin: 1.25rem 0 2rem 0;
      flex-grow: 1;
    }
    .feature-list li {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 0.6rem;
      display: flex;
      align-items: flex-start;
      gap: 0.5rem;
    }
    .feature-list li::before {
      content: '✓';
      color: var(--primary);
      font-weight: bold;
      flex-shrink: 0;
    }

    /* 板块 6: 深色对比理念与算法架构区 */
    .arch-flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      margin-top: 3rem;
    }
    .arch-flow-node {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 2rem 1.5rem;
      position: relative;
      transition: var(--transition);
    }
    .arch-flow-node:hover {
      background: rgba(255, 255, 255, 0.09);
      border-color: var(--primary);
    }
    .arch-step-badge {
      font-size: 0.75rem;
      font-weight: 800;
      color: var(--primary);
      background: rgba(0, 229, 153, 0.15);
      display: inline-block;
      padding: 0.2rem 0.6rem;
      border-radius: 4px;
      margin-bottom: 1rem;
    }
    .arch-flow-node h4 {
      font-size: 1.2rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 0.6rem;
    }
    .arch-flow-node p {
      font-size: 0.875rem;
      color: var(--text-light);
      line-height: 1.7;
    }

    /* 板块 7: 技术结果对比看板 */
    .comparison-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
    }
    .comparison-col {
      border-radius: var(--radius-xl);
      padding: 2.5rem;
    }
    .comparison-col.traditional {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
    }
    .comparison-col.ai-driven {
      background: linear-gradient(145deg, #0A192F 0%, #112240 100%);
      color: #FFFFFF;
      border: 1px solid var(--primary);
      box-shadow: 0 15px 30px rgba(0, 229, 153, 0.1);
    }
    .comparison-col h4 {
      font-size: 1.45rem;
      font-weight: 800;
      margin-bottom: 1.75rem;
      display: flex;
      align-items: center;
      gap: 0.6rem;
    }
    .comparison-items {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }    .comparison-item {
      padding-bottom: 1.25rem;
      border-bottom: 1px solid rgba(148, 163, 184, 0.2);
    }
    .comparison-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .comparison-item .comp-label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 0.35rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .comparison-col.ai-driven .comp-label {
      color: var(--primary);
    }
    .comparison-item .comp-val {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.6;
    }
    .comparison-col.ai-driven .comp-val {
      color: #FFFFFF;
    }

    /* 板块 8: 发展里程碑与技术演进 */
    .timeline-wrap {
      position: relative;
      padding: 1.5rem 0;
    }
    .timeline-track {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .timeline-track::before {
      content: '';
      position: absolute;
      top: 28px;
      left: 3rem;
      right: 3rem;
      height: 2px;
      background: #CBD5E1;
      z-index: 1;
    }
    .timeline-node {
      position: relative;
      z-index: 2;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 1.75rem 1.25rem;
      transition: var(--transition);
    }
    .timeline-node:hover {
      border-color: var(--accent-blue);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .timeline-dot {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--bg-light);
      border: 4px solid var(--accent-blue);
      margin-bottom: 1.25rem;
      box-shadow: 0 0 0 4px #FFFFFF;
    }
    .timeline-node:last-child .timeline-dot {
      border-color: var(--primary);
      background: var(--secondary);
    }
    .timeline-node .node-date {
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--accent-blue);
      margin-bottom: 0.35rem;
    }
    .timeline-node h5 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .timeline-node p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 9: 实战应用与用户故事区 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-xl);
    }
    .case-thumb {
      height: 210px;
      overflow: hidden;
      position: relative;
    }
    .case-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .case-card:hover .case-thumb img {
      transform: scale(1.05);
    }
    .case-tag-pill {
      position: absolute;
      bottom: 1rem;
      left: 1rem;
      background: rgba(10, 25, 47, 0.85);
      backdrop-filter: blur(4px);
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.3rem 0.75rem;
      border-radius: 9999px;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .case-body {
      padding: 1.75rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .case-body h4 {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      line-height: 1.4;
    }
    .case-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.5rem;
      flex-grow: 1;
    }
    .case-stats-bar {
      display: flex;
      justify-content: space-between;
      padding-top: 1rem;
      border-top: 1px solid var(--border-color);
    }
    .case-stat-unit span {
      display: block;
      font-size: 0.75rem;
      color: var(--text-muted);
    }
    .case-stat-unit strong {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--accent-blue);
    }

    /* 板块 10: 用户评价与行业背书区 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .review-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 2.25rem 2rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-quote {
      font-size: 0.95rem;
      color: #334155;
      line-height: 1.75;
      margin-bottom: 1.5rem;
      position: relative;
    }
    .review-quote::before {
      content: '“';
      font-size: 3rem;
      color: #E2E8F0;
      position: absolute;
      top: -1.5rem;
      left: -0.5rem;
      z-index: -1;
      font-family: serif;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 1rem;
      padding-top: 1.25rem;
      border-top: 1px solid var(--border-color);
    }
    .reviewer-avatar-stub {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--secondary) 0%, var(--accent-blue) 100%);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .reviewer-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .reviewer-info span {
      font-size: 0.8rem;
      color: var(--text-muted);
      display: block;
    }

    /* 板块 11: 行业前沿与资讯精粹区 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      border-color: var(--accent-blue);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .news-body {
      padding: 1.5rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--accent-blue);
      font-weight: 600;
      margin-bottom: 0.6rem;
    }
    .news-body h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.45;
      margin-bottom: 0.75rem;
    }
    .news-body p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }
    .news-card-link {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--secondary);
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }
    .news-card-link:hover {
      color: var(--primary-hover);
    }

    /* 板块 12: 平台保障与合规资质条 */
    .trust-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .trust-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 1.75rem 1.25rem;
      border: 1px solid var(--border-color);
      text-align: center;
      transition: var(--transition);
    }
    .trust-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .trust-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: rgba(0, 229, 153, 0.12);
      color: var(--secondary);
      margin: 0 auto 1rem auto;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: bold;
    }
    .trust-card h5 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.35rem;
    }
    .trust-card p {
      font-size: 0.825rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 13: FAQ 与线索转化双联区 */
    .faq-form-section {
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
    }
    .split-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3.5rem;
      align-items: flex-start;
    }
    .faq-accordion-group {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .faq-item {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item[open] {
      border-color: var(--accent-blue);
      background: #FFFFFF;
      box-shadow: var(--shadow-sm);
    }
    .faq-item summary {
      padding: 1.25rem 1.5rem;
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary::after {
      content: '+';
      font-size: 1.35rem;
      font-weight: 400;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }
    .faq-item[open] summary::after {
      content: '−';
      color: var(--accent-blue);
    }
    .faq-content {
      padding: 0 1.5rem 1.25rem 1.5rem;
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .conversion-box {
      background: linear-gradient(145deg, #0A192F 0%, #0F223D 100%);
      border-radius: var(--radius-xl);
      padding: 2.5rem;
      color: #FFFFFF;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: var(--shadow-xl);
    }
    .conversion-box h4 {
      font-size: 1.55rem;
      font-weight: 800;
      margin-bottom: 0.5rem;
    }
    .conversion-box p {
      font-size: 0.9rem;
      color: #94A3B8;
      margin-bottom: 1.75rem;
    }
    .lead-form-group {
      margin-bottom: 1.25rem;
    }
    .lead-form-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      color: #CBD5E1;
      margin-bottom: 0.4rem;
    }
    .lead-form-control {
      width: 100%;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-md);
      padding: 0.85rem 1rem;
      color: #FFFFFF;
      font-size: 0.9rem;
      transition: var(--transition);
    }
    .lead-form-control:focus-visible {
      border-color: var(--primary);
      outline: 2px solid rgba(0, 229, 153, 0.35);
      background: rgba(255, 255, 255, 0.12);
    }
    .lead-form-control option {
      background: #0A192F;
      color: #FFFFFF;
    }
    .submit-cta-btn {
      width: 100%;
      background: var(--primary);
      color: var(--secondary);
      font-weight: 800;
      font-size: 1rem;
      padding: 0.95rem;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: var(--transition);
      margin-top: 0.75rem;
    }
    .submit-cta-btn:hover {
      background: var(--primary-hover);
      box-shadow: 0 4px 15px rgba(0, 229, 153, 0.4);
    }
    .form-disclaimer {
      font-size: 0.75rem;
      color: #64748B;
      text-align: center;
      margin-top: 0.85rem;
    }

    /* 页脚 */
    .site-footer {
      background-color: var(--secondary-deep);
      color: #94A3B8;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 4.5rem 0 2rem 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.25fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-col p {
      line-height: 1.75;
      font-size: 0.875rem;
    }
    .footer-links-list {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .footer-links-list a:hover {
      color: var(--primary);
    }
    .footer-contact-item {
      display: flex;
      align-items: flex-start;
      gap: 0.6rem;
      margin-bottom: 0.75rem;
      font-size: 0.875rem;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8125rem;
    }
    .footer-bottom a {
      color: #94A3B8;
    }
    .footer-bottom a:hover {
      color: var(--primary);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .intro-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid, .products-grid, .cases-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .arch-flow-grid, .timeline-track, .news-grid, .trust-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-track::before {
        display: none;
      }
      .split-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--secondary);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1.25rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-content h1 {
        font-size: 2.15rem;
      }
      .matrix-grid, .products-grid, .cases-grid, .reviews-grid, .comparison-container {
        grid-template-columns: 1fr;
      }
      .arch-flow-grid, .timeline-track, .news-grid, .trust-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      section {
        padding: 4rem 0;
      }
      .section-title {
        font-size: 1.85rem;
      }
    }