/* roulang page: index */
:root {
      --primary: #1E40AF;
      --primary-hover: #1D4ED8;
      --accent: #0284C7;
      --highlight: #0D9488;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0F172A;
      --bg-card-dark: #1E293B;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-light: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --max-width: 1280px;
    }

    * {
      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-muted);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

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

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

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

    /* Top Bar */
    .top-bar {
      background-color: #F1F5F9;
      border-bottom: 1px solid var(--border-color);
      font-size: 13px;
      color: var(--text-light);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-left span {
      margin-right: 20px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .top-bar-right a {
      color: var(--text-light);
    }
    .top-bar-right a:hover {
      color: var(--primary);
    }

    /* Header Nav */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.02em;
    }
    .brand-logo-mark {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 800;
      font-size: 18px;
    }
    .nav-links {
      display: flex;
      gap: 32px;
      list-style: none;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary);
    }
    .nav-cta-btn {
      background: var(--primary);
      color: #ffffff !important;
      padding: 10px 22px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      box-shadow: 0 4px 12px rgba(30, 64, 175, 0.2);
    }
    .nav-cta-btn:hover {
      background: var(--primary-hover);
      box-shadow: 0 6px 16px rgba(30, 64, 175, 0.3);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* Section Global Styles */
    section {
      padding: 90px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-white);
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #94A3B8;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: #EFF6FF;
      color: var(--primary);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 14px;
      letter-spacing: 0.04em;
    }
    .section-dark .section-tag {
      background: rgba(30, 64, 175, 0.25);
      color: #60A5FA;
    }
    .section-title {
      font-size: 34px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-light);
      line-height: 1.8;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* Hero Section (Video / Stage Mask Blueprinted) */
    .hero-section {
      padding: 120px 0 100px;
      position: relative;
      background: url('/assets/images/ca32329a87695b3e.jpg') center/cover no-repeat;
      color: #ffffff;
      overflow: hidden;
    }
    .hero-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(180deg, rgba(15, 23, 42, 0.88) 0%, rgba(15, 23, 42, 0.96) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      backdrop-filter: blur(8px);
      padding: 6px 18px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 500;
      margin-bottom: 24px;
      color: #E2E8F0;
    }
    .hero-badge-dot {
      width: 8px;
      height: 8px;
      background: var(--highlight);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--highlight);
    }
    .hero-title {
      font-size: 46px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 22px;
      letter-spacing: -0.03em;
      color: #FFFFFF;
    }
    .hero-subtitle {
      font-size: 17px;
      line-height: 1.85;
      color: #CBD5E1;
      max-width: 840px;
      margin: 0 auto 36px auto;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 18px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }
    .btn-hero-primary {
      background: var(--primary);
      color: #FFFFFF;
      padding: 14px 34px;
      border-radius: 8px;
      font-size: 15px;
      font-weight: 600;
      border: 1px solid var(--primary);
      box-shadow: 0 8px 20px rgba(30, 64, 175, 0.35);
    }
    .btn-hero-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
    }
    .btn-hero-secondary {
      background: rgba(255, 255, 255, 0.08);
      color: #FFFFFF;
      padding: 14px 30px;
      border-radius: 8px;
      font-size: 15px;
      font-weight: 600;
      border: 1px solid rgba(255, 255, 255, 0.24);
      backdrop-filter: blur(6px);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-hero-secondary:hover {
      background: rgba(255, 255, 255, 0.16);
      transform: translateY(-2px);
    }
    .hero-play-icon {
      width: 20px;
      height: 20px;
      background: #FFFFFF;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 10px;
      padding-left: 2px;
    }
    .hero-trust-bar {
      display: flex;
      justify-content: center;
      gap: 36px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 32px;
      font-size: 13px;
      color: #94A3B8;
      flex-wrap: wrap;
    }

    /* Section 2: Problems */
    .problems-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .problem-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .problem-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: #EF4444;
      opacity: 0.8;
    }
    .problem-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .problem-icon {
      width: 48px;
      height: 48px;
      background: #FEF2F2;
      color: #DC2626;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .problem-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .problem-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Section 3: Demo Walkthrough */
    .demo-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .demo-media {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
      border: 1px solid var(--border-color);
    }
    .demo-steps {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .step-item {
      display: flex;
      gap: 20px;
      padding: 20px;
      background: var(--bg-main);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      transition: all 0.25s ease;
    }
    .step-item:hover {
      border-color: var(--accent);
      background: #FFFFFF;
      box-shadow: var(--shadow-sm);
    }
    .step-number {
      width: 38px;
      height: 38px;
      background: var(--primary);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      flex-shrink: 0;
      font-size: 15px;
    }
    .step-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .step-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Section 4: Result Preview */
    .preview-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .preview-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .preview-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .preview-img-box {
      height: 190px;
      overflow: hidden;
    }
    .preview-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .preview-card:hover .preview-img-box img {
      transform: scale(1.04);
    }
    .preview-body {
      padding: 26px;
    }
    .preview-badge {
      display: inline-block;
      padding: 3px 10px;
      background: #F0FDF4;
      color: var(--highlight);
      border-radius: 4px;
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 12px;
    }
    .preview-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .preview-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
    }
    .preview-kpi {
      display: flex;
      justify-content: space-between;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
      font-size: 13px;
      color: var(--text-light);
    }
    .preview-kpi strong {
      color: var(--primary);
      font-size: 15px;
    }

    /* Section 5: Architecture */
    .arch-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .arch-card {
      background: rgba(30, 41, 59, 0.7);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      position: relative;
      transition: all 0.3s ease;
    }
    .arch-card:hover {
      background: rgba(30, 41, 59, 1);
      border-color: var(--accent);
      transform: translateY(-4px);
    }
    .arch-level {
      font-size: 12px;
      font-weight: 700;
      color: var(--accent);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 10px;
    }
    .arch-title {
      font-size: 18px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 12px;
    }
    .arch-desc {
      font-size: 13px;
      line-height: 1.7;
      color: #94A3B8;
    }

    /* Section 6: Bottlenecks & Answers */
    .blocker-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .blocker-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .blocker-q {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .blocker-q-icon {
      background: #EFF6FF;
      color: var(--primary);
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-size: 13px;
      font-weight: 800;
    }
    .blocker-a {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      padding-left: 40px;
      border-left: 2px solid #EFF6FF;
    }

    /* Section 7: Success Roadmap */
    .roadmap-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .roadmap-item {
      background: var(--bg-white);
      padding: 30px 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .roadmap-badge {
      display: inline-block;
      padding: 3px 10px;
      background: #EFF6FF;
      color: var(--primary);
      font-size: 12px;
      font-weight: 700;
      border-radius: 4px;
      margin-bottom: 14px;
    }
    .roadmap-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .roadmap-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Section 8: Metrics */
    .metrics-strip {
      background: #EFF6FF;
      border-top: 1px solid #DBEAFE;
      border-bottom: 1px solid #DBEAFE;
      padding: 60px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-num {
      font-size: 42px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .metric-num span {
      font-size: 24px;
      color: var(--accent);
      margin-left: 2px;
    }
    .metric-label {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .metric-desc {
      font-size: 13px;
      color: var(--text-light);
    }

    /* Section 9: Member Rights Matrix */
    .privilege-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .privilege-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 32px 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s ease;
    }
    .privilege-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .privilege-header {
      margin-bottom: 20px;
    }
    .privilege-name {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .privilege-tag {
      font-size: 12px;
      color: var(--accent);
      font-weight: 600;
    }
    .privilege-list {
      list-style: none;
      margin-bottom: 24px;
    }
    .privilege-list li {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .privilege-list li::before {
      content: "✓";
      color: var(--highlight);
      font-weight: 800;
    }
    .privilege-btn {
      width: 100%;
      text-align: center;
      padding: 10px;
      background: #F1F5F9;
      color: var(--text-main);
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
    }
    .privilege-card:hover .privilege-btn {
      background: var(--primary);
      color: #FFFFFF;
    }

    /* Section 10: Industry Insights */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .insight-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .insight-img {
      height: 180px;
      overflow: hidden;
    }
    .insight-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-body {
      padding: 24px;
    }
    .insight-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 10px;
    }
    .insight-tag {
      color: var(--primary);
      font-weight: 600;
    }
    .insight-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.45;
      margin-bottom: 10px;
    }
    .insight-summary {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .insight-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .insight-card:hover .insight-link {
      color: var(--accent);
    }

    /* Section 11: Compliance & SLA */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .guarantee-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      border: 1px solid var(--border-color);
      display: flex;
      align-items: flex-start;
      gap: 16px;
      box-shadow: var(--shadow-sm);
    }
    .guarantee-icon {
      width: 44px;
      height: 44px;
      background: #EFF6FF;
      color: var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      flex-shrink: 0;
      font-weight: 700;
    }
    .guarantee-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .guarantee-text {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.6;
    }

    /* Section 12: CTA & Contact Form */
    .cta-card {
      background: linear-gradient(135deg, #1E40AF 0%, #0F172A 100%);
      border-radius: 20px;
      padding: 64px 48px;
      color: #FFFFFF;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
      box-shadow: 0 20px 40px rgba(15, 23, 42, 0.2);
    }
    .cta-title {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 18px;
      color: #FFFFFF;
    }
    .cta-desc {
      font-size: 15px;
      line-height: 1.8;
      color: #CBD5E1;
      margin-bottom: 32px;
    }
    .cta-direct-contacts {
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 14px;
      color: #E2E8F0;
    }
    .cta-direct-contacts strong {
      color: #FFFFFF;
    }
    .cta-form {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
      color: var(--text-main);
    }
    .cta-form-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 20px;
      color: var(--text-main);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      background: #F8FAFC;
      transition: border-color 0.2s ease;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--primary);
      background: #FFFFFF;
    }
    .form-textarea {
      resize: vertical;
      min-height: 80px;
    }
    .btn-form-submit {
      width: 100%;
      background: var(--primary);
      color: #FFFFFF;
      border: none;
      padding: 12px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 15px;
      cursor: pointer;
      transition: background 0.25s ease;
      margin-top: 6px;
    }
    .btn-form-submit:hover {
      background: var(--primary-hover);
    }

    /* Footer */
    .site-footer {
      background: #0B1120;
      color: #94A3B8;
      padding: 80px 0 30px;
      border-top: 1px solid #1E293B;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      margin-bottom: 60px;
    }
    .footer-logo {
      font-size: 18px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 16px;
      display: inline-block;
    }
    .footer-intro {
      line-height: 1.8;
      font-size: 13px;
      color: #64748B;
      max-width: 380px;
    }
    .footer-heading {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a {
      color: #94A3B8;
      font-size: 13px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-contact-item {
      font-size: 13px;
      line-height: 1.8;
      margin-bottom: 8px;
      color: #94A3B8;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #64748B;
      flex-wrap: wrap;
      gap: 16px;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #94A3B8;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .problems-grid, .preview-grid, .privilege-grid, .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .arch-grid, .roadmap-timeline, .guarantee-grid, .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .demo-wrapper, .cta-card {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 767px) {
      .top-bar {
        display: none;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        gap: 18px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-hover);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-cta-btn {
        display: none;
      }
      section {
        padding: 56px 0;
      }
      .hero-section {
        padding: 72px 0 60px;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-subtitle {
        font-size: 15px;
      }
      .section-title {
        font-size: 24px;
      }
      .problems-grid, .preview-grid, .privilege-grid, .insights-grid,
      .arch-grid, .roadmap-timeline, .guarantee-grid, .metrics-grid,
      .blocker-grid {
        grid-template-columns: 1fr;
      }
      .cta-card {
        padding: 32px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }