/* roulang page: index */
:root {
      --primary: #0F172A;
      --primary-light: #1E293B;
      --accent: #00D26A;
      --accent-glow: rgba(0, 210, 106, 0.25);
      --secondary: #38BDF8;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #020617;
      --text-main: #334155;
      --text-dark: #0F172A;
      --text-muted: #64748B;
      --border: #E2E8F0;
      --border-dark: rgba(255, 255, 255, 0.1);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-pill: 9999px;
      --font-mono: "JetBrains Mono", "DIN Alternate", "SF Mono", monospace;
      --font-sans: system-ui, -apple-system, "PingFang SC", "Segoe UI", sans-serif;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
      --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-hover: 0 10px 25px -5px rgba(15, 23, 42, 0.1);
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

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

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

    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;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部双行导航 */
    .top-bar {
      height: 38px;
      background-color: var(--primary);
      color: #94A3B8;
      font-size: 12px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      align-items: center;
    }

    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }

    .top-status {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      letter-spacing: 0.02em;
    }

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

    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(0, 210, 106, 0.7); }
      70% { box-shadow: 0 0 0 8px rgba(0, 210, 106, 0); }
      100% { box-shadow: 0 0 0 0 rgba(0, 210, 106, 0); }
    }

    .top-actions {
      display: flex;
      align-items: center;
      gap: 20px;
      font-family: var(--font-mono);
    }

    .main-nav-wrapper {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(15, 23, 42, 0.06);
      height: 72px;
      display: flex;
      align-items: center;
    }

    .main-nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--primary);
      font-weight: 800;
      font-size: 19px;
      letter-spacing: -0.02em;
    }

    .brand-symbol {
      width: 34px;
      height: 34px;
      background: var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-family: var(--font-mono);
      font-weight: 900;
      font-size: 18px;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .nav-link {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-dark);
      position: relative;
      padding: 6px 0;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
    }

    .btn-primary:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(15, 23, 42, 0.2);
    }

    .btn-accent {
      background: var(--accent);
      color: #020617;
      box-shadow: 0 4px 12px var(--accent-glow);
    }

    .btn-accent:hover {
      background: #00ea77;
      transform: translateY(-2px);
    }

    .btn-outline {
      border-color: var(--border);
      background: #FFFFFF;
      color: var(--text-dark);
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      font-size: 12px;
      font-weight: 600;
      border-radius: var(--radius-pill);
      font-family: var(--font-mono);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      border: 1px solid rgba(0, 210, 106, 0.3);
      background: rgba(0, 210, 106, 0.08);
      color: #047857;
    }

    .badge-dark {
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(255, 255, 255, 0.15);
      color: var(--secondary);
    }

    .badge-gray {
      background: #F1F5F9;
      border-color: var(--border);
      color: var(--text-muted);
    }

    /* 板块通用头部 */
    .section-padding {
      padding: 96px 0;
    }

    .section-header {
      margin-bottom: 56px;
      max-width: 760px;
    }

    .section-header.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.02em;
      margin-top: 12px;
      margin-bottom: 16px;
      line-height: 1.25;
    }

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

    /* 板块 1: Hero Section (短问卷测算型) */
    .hero-section {
      position: relative;
      background: #FFFFFF;
      border-bottom: 1px solid var(--border);
      padding: 80px 0 100px;
      overflow: hidden;
    }

    .hero-bg-overlay {
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      width: 50%;
      background-image: url('/assets/images/3eadcfc2afb901d5.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.08;
      pointer-events: none;
      mask-image: linear-gradient(to right, transparent, black);
      -webkit-mask-image: linear-gradient(to right, transparent, black);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 60px;
      align-items: center;
      position: relative;
      z-index: 2;
    }

    .hero-h1 {
      font-size: clamp(38px, 4.5vw, 54px);
      font-weight: 900;
      color: var(--primary);
      line-height: 1.16;
      letter-spacing: -0.03em;
      margin: 18px 0;
    }

    .hero-p {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 32px;
    }

    .hero-interactive-card {
      background: #FFFFFF;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-card);
      position: relative;
    }

    .card-top-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid #F1F5F9;
    }

    .card-top-header h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
    }

    .quiz-group {
      margin-bottom: 20px;
    }

    .quiz-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 10px;
    }

    .quiz-options {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
    }

    .quiz-pill {
      border: 1px solid var(--border);
      padding: 10px 8px;
      text-align: center;
      font-size: 13px;
      font-weight: 500;
      border-radius: var(--radius-sm);
      cursor: pointer;
      background: #F8FAFC;
      transition: var(--transition);
      user-select: none;
    }

    .quiz-pill.active, .quiz-pill:hover {
      border-color: var(--primary);
      background: var(--primary);
      color: #FFFFFF;
    }

    .quiz-pill.selected-accent {
      border-color: var(--accent);
      background: rgba(0, 210, 106, 0.1);
      color: #047857;
      font-weight: 600;
    }

    .quiz-result-preview {
      margin-top: 24px;
      background: #F8FAFC;
      border: 1px dashed #CBD5E1;
      border-radius: var(--radius-sm);
      padding: 16px;
    }

    .preview-row {
      display: flex;
      justify-content: space-between;
      font-size: 13px;
      margin-bottom: 8px;
    }

    .preview-row:last-child {
      margin-bottom: 0;
    }

    .preview-val {
      font-family: var(--font-mono);
      font-weight: 700;
      color: var(--primary);
    }

    /* 板块 2: 指标看板 (Metrics Ticker) */
    .metrics-ticker-section {
      background: #FFFFFF;
      border-bottom: 1px solid var(--border);
      padding: 40px 0;
    }

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

    .ticker-item {
      padding: 16px 20px;
      border-left: 2px solid var(--border);
      transition: var(--transition);
    }

    .ticker-item:hover {
      border-left-color: var(--accent);
    }

    .ticker-num {
      font-family: var(--font-mono);
      font-size: 38px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      display: flex;
      align-items: baseline;
      gap: 4px;
      margin-bottom: 8px;
    }

    .ticker-num span {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-muted);
    }

    .ticker-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 4px;
    }

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

    /* 板块 3: 核心服务亮点 (Hardcore Engine) */
    .engine-section {
      background: var(--bg-main);
    }

    .engine-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .engine-detail-list {
      margin-top: 28px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .engine-list-item {
      display: flex;
      gap: 16px;
      background: #FFFFFF;
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

    .engine-item-icon {
      width: 40px;
      height: 40px;
      border-radius: var(--radius-sm);
      background: rgba(0, 210, 106, 0.1);
      color: #047857;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-mono);
      font-weight: 800;
      font-size: 16px;
      flex-shrink: 0;
    }

    .engine-item-content h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }

    .engine-item-content p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .engine-media-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border);
      background: #020617;
      box-shadow: var(--shadow-card);
    }

    .engine-media-card img {
      width: 100%;
      height: 440px;
      object-fit: cover;
      opacity: 0.85;
    }

    .media-card-overlay {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      padding: 28px;
      background: linear-gradient(to top, rgba(2, 6, 23, 0.95), transparent);
      color: #FFFFFF;
    }

    .media-card-tag {
      font-family: var(--font-mono);
      color: var(--accent);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.05em;
      margin-bottom: 8px;
      display: block;
    }

    /* 板块 4: 六维核心优势矩阵 (Hexa-Grid Matrix) */
    .matrix-section {
      background: #FFFFFF;
    }

    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .matrix-card {
      padding: 32px 28px;
      background: #FFFFFF;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .matrix-card:hover {
      border-color: rgba(15, 23, 42, 0.3);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .matrix-card-top {
      margin-bottom: 20px;
    }

    .matrix-badge-num {
      font-family: var(--font-mono);
      font-size: 13px;
      font-weight: 700;
      color: var(--text-muted);
      display: block;
      margin-bottom: 12px;
    }

    .matrix-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
      line-height: 1.35;
    }

    .matrix-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .matrix-card-footer {
      padding-top: 20px;
      border-top: 1px solid #F1F5F9;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
      font-family: var(--font-mono);
      color: var(--text-muted);
    }

    .matrix-card-footer .live-rate {
      color: var(--accent);
      font-weight: 700;
    }

    /* 板块 5: 商业套餐与分析套件对比 (Suite Showcase) */
    .suite-section {
      background: var(--bg-main);
    }

    .suite-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      align-items: stretch;
    }

    .suite-card {
      background: #FFFFFF;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }

    .suite-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    .suite-card.highlight {
      border-color: var(--accent);
      box-shadow: 0 10px 30px -10px rgba(0, 210, 106, 0.25);
    }

    .suite-badge-hot {
      position: absolute;
      top: -12px;
      right: 28px;
      background: var(--accent);
      color: #020617;
      padding: 4px 14px;
      font-size: 11px;
      font-weight: 800;
      border-radius: var(--radius-pill);
      letter-spacing: 0.05em;
    }

    .suite-title {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .suite-desc {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.6;
    }

    .suite-metric-tag {
      font-family: var(--font-mono);
      font-size: 28px;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px solid #F1F5F9;
    }

    .suite-metric-tag small {
      font-size: 13px;
      font-weight: 500;
      color: var(--text-muted);
    }

    .suite-feature-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 32px;
      flex-grow: 1;
    }

    .suite-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 13px;
      color: var(--text-dark);
    }

    .suite-check {
      color: var(--accent);
      font-weight: 800;
    }

    /* 板块 6: 沉浸式深色拓扑架构 (Dark Mode Architecture) */
    .arch-dark-section {
      background: var(--bg-dark);
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
    }

    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 64px;
      align-items: center;
    }

    .arch-content h2 {
      font-size: 34px;
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-top: 14px;
      margin-bottom: 20px;
      line-height: 1.25;
      color: #FFFFFF;
    }

    .arch-content p {
      color: #94A3B8;
      font-size: 15px;
      line-height: 1.75;
      margin-bottom: 28px;
    }

    .arch-topo-board {
      background: rgba(15, 23, 42, 0.7);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .topo-layer {
      background: rgba(2, 6, 23, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .layer-info h5 {
      font-size: 14px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 4px;
    }

    .layer-info p {
      font-size: 12px;
      color: #64748B;
      margin-bottom: 0;
    }

    .layer-badge {
      font-family: var(--font-mono);
      font-size: 12px;
      color: var(--secondary);
      background: rgba(56, 189, 248, 0.1);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
    }

    /* 板块 7: 典型场景前后效果对比 (Before vs After) */
    .compare-section {
      background: #FFFFFF;
    }

    .compare-table-wrapper {
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .compare-row {
      display: grid;
      grid-template-columns: 2fr 3fr 3fr;
      padding: 20px 24px;
      align-items: center;
      border-bottom: 1px solid #F1F5F9;
    }

    .compare-row:last-child {
      border-bottom: none;
    }

    .compare-row.head {
      background: #F8FAFC;
      font-weight: 700;
      font-size: 14px;
      color: var(--primary);
      border-bottom: 1px solid var(--border);
    }

    .col-dim {
      font-weight: 600;
      color: var(--primary);
      font-size: 14px;
    }

    .col-trad {
      color: #94A3B8;
      font-size: 13px;
      padding-right: 16px;
    }

    .col-now {
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 8px;}

    .col-now .status-ok {
      color: var(--accent);
      font-weight: 800;
    }

    /* 板块 8: 客户发声与技术合伙人评价 (Voice of Partners) */
    .testimonial-section {
      background: var(--bg-main);
    }

    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }

    .testimonial-quote {
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-main);
      margin-bottom: 24px;
      position: relative;
      z-index: 1;
    }

    .testimonial-quote::before {
      content: "“";
      font-family: Georgia, serif;
      font-size: 54px;
      position: absolute;
      top: -26px;
      left: -8px;
      color: #E2E8F0;
      z-index: -1;
      opacity: 0.8;
    }

    .author-info {
      display: flex;
      align-items: center;
      gap: 14px;
      padding-top: 16px;
      border-top: 1px solid #F1F5F9;
    }

    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #0F172A;
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
      font-family: var(--font-mono);
    }

    .author-meta h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--primary);
    }

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

    /* 板块 9: 行业资讯与分析趋势摘要 (News & Insights) */
    .news-section {
      background: #FFFFFF;
    }

    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

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

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

    .news-cover {
      height: 180px;
      overflow: hidden;
      position: relative;
    }

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

    .news-card:hover .news-cover img {
      transform: scale(1.05);
    }

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

    .news-date {
      font-family: var(--font-mono);
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .news-summary {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    /* 板块 10: 平台技术安全与合规保障 (Trust & SLAs) */
    .sla-section {
      background: var(--bg-main);
    }

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

    .sla-item {
      background: #FFFFFF;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      text-align: left;
    }

    .sla-icon {
      font-family: var(--font-mono);
      font-size: 18px;
      font-weight: 800;
      color: #047857;
      background: rgba(0, 210, 106, 0.12);
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      margin-bottom: 18px;
    }

    .sla-item h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .sla-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 11: 常见技术解答手风琴 (Interactive FAQ) */
    .faq-section {
      background: #FFFFFF;
    }

    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      background: #FFFFFF;
    }

    .faq-toggle {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      background: #FFFFFF;
      border: none;
      font-size: 15px;
      font-weight: 700;
      color: var(--primary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: var(--transition);
    }

    .faq-toggle:hover {
      background: #F8FAFC;
    }

    .faq-symbol {
      font-family: var(--font-mono);
      font-size: 18px;
      color: var(--text-muted);
      transition: transform 0.2s ease;
    }

    .faq-item.active .faq-symbol {
      transform: rotate(45deg);
      color: var(--accent);
    }

    .faq-panel {
      padding: 0 24px 22px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
      border-top: 1px solid #F8FAFC;
    }

    .faq-item.active .faq-panel {
      display: block;
    }

    /* 板块 12: 底部意向转化与表单区 (Conversion CTA) */
    .conversion-section {
      background: #020617;
      color: #FFFFFF;
      position: relative;
    }

    .cta-card {
      background: rgba(15, 23, 42, 0.95);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .cta-text h3 {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }

    .cta-text p {
      font-size: 15px;
      color: #94A3B8;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .cta-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group label {
      font-size: 13px;
      font-weight: 600;
      color: #CBD5E1;
    }

    .form-control {
      background: rgba(2, 6, 23, 0.8);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: var(--radius-sm);
      padding: 12px 14px;
      color: #FFFFFF;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 2px var(--accent-glow);
    }

    .form-submit-row {
      margin-top: 8px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .form-privacy-note {
      font-size: 11px;
      color: #64748B;
      line-height: 1.5;
    }

    /* 全局页脚 */
    .site-footer {
      background: #020617;
      color: #94A3B8;
      font-size: 13px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 72px 0 32px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1.2fr 1.2fr 1.6fr;
      gap: 48px;
      margin-bottom: 56px;
    }

    .footer-brand h4 {
      font-size: 18px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
      font-size: 13px;
    }

    .footer-col h5 {
      font-size: 14px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
      letter-spacing: 0.03em;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

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

    .footer-contact-item {
      margin-bottom: 8px;
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    .footer-contact-item span {
      color: #64748B;
      font-size: 11px;
      text-transform: uppercase;
      font-family: var(--font-mono);
    }

    .footer-contact-item strong {
      color: #E2E8F0;
      font-size: 13px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #64748B;
    }

    .footer-bottom-links {
      display: flex;
      gap: 20px;
    }

    /* 移动端菜单按钮与响应式断点 */
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 8px 12px;
      font-size: 18px;
      cursor: pointer;
      color: var(--primary);
    }

    @media (max-width: 1024px) {
      .ticker-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid, .suite-grid, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .sla-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cta-card {
        grid-template-columns: 1fr;
      }
      .arch-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        gap: 16px;
      }
      .nav-menu.open {
        display: flex;
      }
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .engine-layout {
        grid-template-columns: 1fr;
      }
      .ticker-grid, .matrix-grid, .suite-grid, .testimonial-grid, .news-grid, .sla-grid {
        grid-template-columns: 1fr;
      }
      .compare-row {
        grid-template-columns: 1fr;
        gap: 8px;
      }
      .compare-row.head {
        display: none;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .section-padding {
        padding: 64px 0;
      }
      .cta-card {
        padding: 36px 20px;
      }
    }