/* roulang page: index */
:root {
      --primary: #0b0f17;
      --accent: #00d084;
      --accent-hover: #08b976;
      --accent-glow: rgba(0, 208, 132, 0.15);
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --bg-dark: #06090e;
      --bg-dark-card: #0e1420;
      --text-main: #0f172a;
      --text-muted: #334155;
      --text-light: #64748b;
      --text-on-dark: #f8fafc;
      --border-light: rgba(15, 23, 42, 0.08);
      --border-dark: rgba(255, 255, 255, 0.1);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --shadow-sm: 0 2px 8px -1px rgba(11, 15, 23, 0.04);
      --shadow-md: 0 8px 24px -4px rgba(11, 15, 23, 0.06);
      --shadow-lg: 0 16px 36px -6px rgba(11, 15, 23, 0.1);
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      --max-w: 1240px;
    }

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

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

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

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

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

    /* 顶部通告条与导航 */
    .top-bar {
      background: #05070b;
      color: #94a3b8;
      font-size: 0.825rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding: 6px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 7px;
      height: 7px;
      background: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.15rem;
      letter-spacing: -0.02em;
      color: var(--primary);
    }
    .logo-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: linear-gradient(135deg, #0b0f17 0%, #1e293b 100%);
      border: 1px solid var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-weight: 800;
      font-size: 1.1rem;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }
    .nav-cta-btn {
      background: var(--primary);
      color: #fff;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      font-weight: 600;
      border: 1px solid rgba(255, 255, 255, 0.1);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
    }
    .nav-cta-btn:hover {
      background: #1e293b;
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .menu-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--primary);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
    }
    .btn-primary {
      background: var(--accent);
      color: #05080e;
      box-shadow: 0 4px 16px rgba(0, 208, 132, 0.25);
    }
    .btn-primary:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0, 208, 132, 0.35);
    }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 1px solid rgba(15, 23, 42, 0.2);
    }
    .btn-outline:hover {
      background: #ffffff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }
    .btn-dark {
      background: #111827;
      color: #ffffff;
      border: 1px solid rgba(255, 255, 255, 0.12);
    }
    .btn-dark:hover {
      background: #1f2937;
      border-color: var(--accent);
      transform: translateY(-2px);
    }

    /* 章节通用 */
    .section-wrap {
      padding: 96px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px;
    }
    .section-header.left-aligned {
      text-align: left;
      margin-left: 0;
      margin-right: 0;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      padding: 4px 12px;
      background: var(--accent-glow);
      color: #038a57;
      border-radius: 999px;
      margin-bottom: 14px;
      border: 1px solid rgba(0, 208, 132, 0.25);
    }
    .section-tag.on-dark {
      background: rgba(0, 208, 132, 0.12);
      color: var(--accent);
      border-color: rgba(0, 208, 132, 0.3);
    }
    .section-title {
      font-size: 2.25rem;
      line-height: 1.25;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text-main);
      margin-bottom: 18px;
    }
    .section-title.on-dark {
      color: #ffffff;
    }
    .section-desc {
      font-size: 1.05rem;
      line-height: 1.8;
      color: var(--text-light);
    }
    .section-desc.on-dark {
      color: #94a3b8;
    }

    /* 板块 1: Hero Banner */
    .hero-section {
      padding: 80px 0 100px;
      background: radial-gradient(circle at 80% 20%, rgba(0, 208, 132, 0.08) 0%, rgba(248, 250, 252, 0) 70%), linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
      position: relative;
      border-bottom: 1px solid var(--border-light);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 2.75rem;
      line-height: 1.18;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 24px;
      letter-spacing: -0.03em;
    }
    .hero-h1 span {
      background: linear-gradient(135deg, #0b0f17 30%, #00a86b 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.1rem;
      line-height: 1.8;
      color: var(--text-muted);
      margin-bottom: 36px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-badges-row {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      padding-top: 24px;
      border-top: 1px solid rgba(15, 23, 42, 0.08);
    }
    .hero-badge-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      font-weight: 600;
      color: #475569;
    }
    .hero-badge-dot {
      width: 6px;
      height: 6px;
      background: var(--accent);
      border-radius: 50%;
    }
    .hero-media-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(15, 23, 42, 0.1);
      background: #0b0f17;
    }
    .hero-media-card img {
      width: 100%;
      height: 480px;
      object-fit: cover;
      opacity: 0.85;
      transition: var(--transition);
    }
    .hero-media-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(11, 15, 23, 0.1) 0%, rgba(11, 15, 23, 0.85) 100%);
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 32px;
      color: #fff;
    }
    .hero-media-tag {
      font-size: 0.75rem;
      background: var(--accent);
      color: #0b0f17;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 4px;
      align-self: flex-start;
      margin-bottom: 10px;
    }
    .hero-media-text {
      font-size: 1.1rem;
      font-weight: 600;
      line-height: 1.5;
    }

    /* 板块 2: Data Dashboard */
    .dashboard-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .stat-card {
      background: var(--bg-main);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      position: relative;
      overflow: hidden;
      transition: var(--transition);
    }
    .stat-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: rgba(0, 208, 132, 0.35);
    }
    .stat-num-box {
      display: flex;
      align-items: baseline;
      gap: 4px;
      margin-bottom: 12px;
    }
    .stat-num {
      font-size: 3.25rem;
      font-weight: 800;
      line-height: 1;
      letter-spacing: -0.03em;
      color: var(--primary);
    }
    .stat-unit {
      font-size: 1.25rem;
      font-weight: 700;
      color: #038a57;
    }
    .stat-label {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .stat-desc {
      font-size: 0.875rem;
      line-height: 1.6;
      color: var(--text-light);
    }
    .stat-bar {
      position: absolute;
      bottom: 0;
      left: 0;
      height: 3px;
      width: 100%;
      background: rgba(15, 23, 42, 0.06);
    }
    .stat-bar-fill {
      height: 100%;
      background: var(--accent);
    }

    /* 板块 3: Platform Foundation */
    .foundation-section {
      background: var(--bg-alt);
      border-bottom: 1px solid var(--border-light);
    }
    .foundation-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .foundation-img-box {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(15, 23, 42, 0.1);
    }
    .foundation-img-box img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .foundation-floating-card {
      position: absolute;
      bottom: 24px;
      right: 24px;
      background: rgba(11, 15, 23, 0.9);
      backdrop-filter: blur(8px);
      padding: 16px 20px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(0, 208, 132, 0.3);
      color: #fff;
      max-width: 280px;
    }
    .floating-card-title {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 4px;
    }
    .floating-card-desc {
      font-size: 0.8rem;
      line-height: 1.5;
      color: #cbd5e1;
    }
    .param-list {
      list-style: none;
      display: grid;
      gap: 16px;
      margin-top: 24px;
    }
    .param-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      background: #ffffff;
      padding: 16px 20px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
    }
    .param-icon {
      flex-shrink: 0;
      width: 28px;
      height: 28px;
      background: var(--accent-glow);
      color: #038a57;
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.9rem;
      font-weight: 800;
    }
    .param-text strong {
      display: block;
      font-size: 0.95rem;
      color: var(--text-main);
      margin-bottom: 2px;
    }
    .param-text p {
      font-size: 0.85rem;
      color: var(--text-light);
      line-height: 1.5;
    }

    /* 板块 4: 6卡片服务矩阵 */
    .services-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
    }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      background: var(--bg-main);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 36px 30px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(0, 208, 132, 0.4);
      background: #ffffff;
    }
    .service-icon-wrap {
      width: 48px;
      height: 48px;
      background: #0b0f17;
      color: var(--accent);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .service-name {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .service-body {
      font-size: 0.925rem;
      color: var(--text-light);
      line-height: 1.7;
      flex-grow: 1;
      margin-bottom: 20px;
    }
    .service-features {
      list-style: none;
      border-top: 1px solid rgba(15, 23, 42, 0.06);
      padding-top: 16px;
      font-size: 0.85rem;
      color: var(--text-muted);
      display: grid;
      gap: 6px;
    }
    .service-features li::before {
      content: "•";
      color: var(--accent);
      font-weight: bold;
      display: inline-block;
      width: 1em;
      margin-left: -1em;
    }

    /* 板块 5: 3卡片细分产品场景 */
    .scenarios-section {
      background: var(--bg-alt);
      border-bottom: 1px solid var(--border-light);
    }
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .scenario-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .scenario-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .scenario-thumb {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .scenario-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .scenario-card:hover .scenario-thumb img {
      transform: scale(1.05);
    }
    .scenario-pill {
      position: absolute;
      top: 16px;
      left: 16px;
      background: rgba(11, 15, 23, 0.85);
      color: var(--accent);
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .scenario-content {
      padding: 28px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .scenario-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .scenario-desc {
      font-size: 0.925rem;
      color: var(--text-light);
      line-height: 1.7;
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .tech-stack-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 24px;
    }
    .tech-tag {
      font-size: 0.75rem;
      background: var(--bg-alt);
      color: var(--text-muted);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
    }

    /* 板块 6: 全链路安全深色展示 */
    .dark-showcase-section {
      background: var(--bg-dark);
      color: var(--text-on-dark);
      border-bottom: 1px solid var(--border-dark);
      position: relative;
      overflow: hidden;
    }
    .security-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .flow-node {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      position: relative;
      transition: var(--transition);
    }
    .flow-node:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
    }
    .node-num {
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 14px;
      letter-spacing: 0.05em;
    }
    .node-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 10px;
    }
    .node-desc {
      font-size: 0.875rem;
      color: #94a3b8;
      line-height: 1.7;
    }

    /* 板块 7: 结果对比区 */
    .compare-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
    }
    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .compare-box {
      border-radius: var(--radius-md);
      padding: 40px;
      border: 1px solid var(--border-light);
    }
    .compare-box.traditional {
      background: var(--bg-main);
    }
    .compare-box.digitalized {
      background: #ffffff;
      border: 2px solid var(--accent);
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .recommend-badge {
      position: absolute;
      top: -14px;
      right: 32px;
      background: var(--accent);
      color: #05080e;
      font-size: 0.8rem;
      font-weight: 800;
      padding: 4px 14px;
      border-radius: 999px;
    }
    .compare-title {
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .compare-subtitle {
      font-size: 0.9rem;
      color: var(--text-light);
      margin-bottom: 28px;
    }
    .compare-rows {
      display: grid;
      gap: 20px;
    }
    .compare-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    }
    .compare-label {
      font-size: 0.95rem;
      color: var(--text-muted);
    }
    .compare-val {
      font-size: 1rem;
      font-weight: 700;
    }
    .val-negative {
      color: #e11d48;
    }
    .val-positive {
      color: #038a57;
      font-size: 1.05rem;
    }

    /* 板块 8: 里程碑与成功案例 */
    .milestones-section {
      background: var(--bg-alt);
      border-bottom: 1px solid var(--border-light);
    }
    .timeline-wrap {
      max-width: 900px;
      margin: 0 auto;
      position: relative;
    }
    .timeline-wrap::before {
      content: '';
      position: absolute;
      left: 120px;
      top: 0;
      bottom: 0;
      width: 2px;
      background: rgba(15, 23, 42, 0.1);
    }
    .timeline-item {
      display: flex;
      margin-bottom: 40px;
      position: relative;
    }
    .timeline-item:last-child {
      margin-bottom: 0;
    }
    .timeline-year {
      width: 100px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      text-align: right;
      padding-right: 36px;
      flex-shrink: 0;
    }
    .timeline-dot {
      position: absolute;
      left: 115px;
      top: 6px;
      width: 12px;
      height: 12px;
      background: var(--accent);
      border-radius: 50%;
      border: 3px solid #ffffff;
      box-shadow: 0 0 0 2px var(--primary);
    }
    .timeline-card {
      margin-left: 48px;
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 28px;
      flex-grow: 1;
      box-shadow: var(--shadow-sm);
    }
    .timeline-card-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .timeline-card-text {
      font-size: 0.9rem;
      color: var(--text-light);
      line-height: 1.7;
    }

    /* 板块 9: 评价反馈区 */
    .testimonials-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
    }
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testimonial-card {
      background: var(--bg-main);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-quote {
      font-size: 0.95rem;
      line-height: 1.8;
      color: var(--text-muted);
      margin-bottom: 24px;
      position: relative;
    }
    .testimonial-author-box {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid rgba(15, 23, 42, 0.06);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #0b0f17;
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 0.95rem;
    }
    .author-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 板块 10: 资讯摘要区 */
    .insights-section {
      background: var(--bg-alt);
      border-bottom: 1px solid var(--border-light);
    }
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .insight-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .insight-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: #038a57;
      margin-bottom: 10px;
    }
    .insight-title {
      font-size: 1.15rem;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .insight-excerpt {
      font-size: 0.875rem;
      color: var(--text-light);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .insight-meta {
      font-size: 0.8rem;
      color: #94a3b8;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid rgba(15, 23, 42, 0.06);
      padding-top: 14px;
    }

    /* 板块 11: 架构与接入答疑 (FAQ 手风琴) */
    .faq-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
    }
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: grid;
      gap: 16px;
    }
    .faq-item {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      overflow: hidden;
      background: var(--bg-main);
    }
    .faq-item summary {
      padding: 20px 24px;
      font-size: 1.05rem;
      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-icon-cross {
      font-size: 1.25rem;
      font-weight: 400;
      transition: transform 0.25s ease;
      color: var(--text-light);
    }
    .faq-item[open] .faq-icon-cross {
      transform: rotate(45deg);
      color: var(--accent-hover);
    }
    .faq-answer {
      padding: 0 24px 24px;
      font-size: 0.95rem;
      line-height: 1.8;
      color: var(--text-muted);
      border-top: 1px solid rgba(15, 23, 42, 0.04);
    }

    /* 板块 12: 转化表单区 */
    .cta-form-section {
      background: linear-gradient(180deg, #f8fafc 0%, #edf2f7 100%);
      padding: 96px 0;
    }
    .cta-card {
      max-width: 760px;
      margin: 0 auto;
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 48px;
      box-shadow: var(--shadow-lg);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 28px;
    }
    .form-col-full {
      grid-column: span 2;
    }
    .form-group label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid rgba(15, 23, 42, 0.15);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      background: #fdfdfd;
      transition: var(--transition);
    }
    .form-control:focus {
      outline: none;
      border-color: #038a57;
      box-shadow: 0 0 0 3px rgba(0, 208, 132, 0.2);
    }
    .form-statement {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-top: 16px;
      text-align: center;
    }

    /* 浮动转化条 */
    .floating-bar {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(11, 15, 23, 0.94);
      backdrop-filter: blur(10px);
      padding: 12px 28px;
      border-radius: 999px;
      border: 1px solid rgba(0, 208, 132, 0.3);
      display: flex;
      align-items: center;
      gap: 24px;
      box-shadow: var(--shadow-lg);
      z-index: 990;
      max-width: 90%;
    }
    .floating-text {
      color: #ffffff;
      font-size: 0.9rem;
      font-weight: 600;
    }
    .floating-btn {
      background: var(--accent);
      color: #0b0f17;
      padding: 8px 18px;
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 700;
      white-space: nowrap;
    }
    .floating-btn:hover {
      background: #ffffff;
    }

    /* 页脚 Footer */
    .site-footer {
      background: #05080d;
      color: #94a3b8;
      padding: 72px 0 36px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand-title {
      color: #ffffff;
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .footer-brand-desc {
      line-height: 1.8;
      margin-bottom: 20px;
      font-size: 0.875rem;
    }
    .footer-col-title {
      color: #ffffff;
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: grid;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .hero-media-card img { height: 380px; }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .security-flow { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .top-bar { display: none; }
      .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-light);
        box-shadow: var(--shadow-md);
      }
      .nav-menu.show { display: flex; }
      .menu-toggle { display: block; }
      .nav-cta-btn { display: none; }
      .hero-h1 { font-size: 2.1rem; }
      .foundation-grid { grid-template-columns: 1fr; }
      .scenarios-grid { grid-template-columns: 1fr; }
      .compare-grid { grid-template-columns: 1fr; }
      .timeline-wrap::before { left: 24px; }
      .timeline-year { width: auto; text-align: left; padding-right: 0; margin-bottom: 8px; }
      .timeline-dot { left: 19px; }
      .timeline-card { margin-left: 40px; }
      .timeline-item { flex-direction: column; }
      .testimonials-grid { grid-template-columns: 1fr; }
      .insights-grid { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .form-col-full { grid-column: span 1; }
      .floating-bar { display: none; }
      .footer-grid { grid-template-columns: 1fr; }
    }