/* roulang page: index */
:root {
      --primary: #6366F1;
      --primary-dark: #4F46E5;
      --secondary: #EC4899;
      --accent: #06B6D4;
      --gradient-main: linear-gradient(135deg, #6366F1 0%, #EC4899 100%);
      --gradient-subtle: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(236, 72, 153, 0.08) 100%);
      --bg-page: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-dark: #0F172A;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --text-light: #F8FAFC;
      --border-color: #E2E8F0;
      --border-focus: rgba(99, 102, 241, 0.4);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(99, 102, 241, 0.08);
      --shadow-lg: 0 20px 30px -4px rgba(99, 102, 241, 0.16);
      --shadow-dark: 0 20px 40px -10px rgba(0, 0, 0, 0.4);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    *, *::before, *::after {
      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-page);
      color: var(--text-body);
      line-height: 1.7;
      letter-spacing: 0.01em;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
      border: none;
      outline: none;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* Topbar & Header */
    .topbar {
      background-color: #F1F5F9;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.825rem;
      color: var(--text-muted);
      padding: 8px 0;
    }

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

    .topbar-left, .topbar-right {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.45rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .brand-symbol {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: var(--gradient-main);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 800;
      font-size: 1.15rem;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
    }

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

    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-body);
      position: relative;
      padding: 6px 0;
    }

    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--gradient-main);
      transition: width 0.3s ease;
    }

    .nav-links a:hover::after, .nav-links a.active::after {
      width: 100%;
    }

    .nav-cta-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 24px;
      border-radius: var(--radius-full);
      background: var(--gradient-main);
      color: #FFF;
      font-weight: 600;
      font-size: 0.95rem;
      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
      transition: var(--transition);
      cursor: pointer;
    }

    .nav-cta-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
    }

    .mobile-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: transparent;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-toggle span {
      width: 24px;
      height: 2.5px;
      background-color: var(--text-main);
      border-radius: 2px;
      transition: var(--transition);
    }

    /* Section Structure */
    section {
      padding: 90px 0;
      position: relative;
    }

    .section-light {
      background-color: var(--bg-page);
    }

    .section-white {
      background-color: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

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

    .section-dark .section-subtitle {
      color: #94A3B8;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 56px auto;
    }

    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: var(--radius-full);
      background: var(--gradient-subtle);
      border: 1px solid rgba(99, 102, 241, 0.2);
      color: var(--primary);
      font-size: 0.825rem;
      font-weight: 600;
      margin-bottom: 14px;
      letter-spacing: 0.02em;
    }

    .section-dark .badge-pill {
      background: rgba(6, 182, 212, 0.12);
      border-color: rgba(6, 182, 212, 0.3);
      color: var(--accent);
    }

    .section-title {
      font-size: clamp(1.6rem, 2.8vw, 2.25rem);
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
    }

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

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. Hero Section */
    .hero-section {
      padding: 70px 0 100px 0;
      background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 20% 70%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
                  #F8FAFC;
    }

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

    .hero-h1 {
      font-size: clamp(2rem, 3.8vw, 3.25rem);
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.22;
      margin-bottom: 20px;
    }

    .hero-h1 span {
      background: var(--gradient-main);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.05rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 32px;
    }

    .hero-bullet-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 36px;
    }

    .hero-bullet-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 500;
      color: var(--text-body);
      font-size: 0.95rem;
    }

    .hero-bullet-icon {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: rgba(99, 102, 241, 0.15);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: 700;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 36px;
    }

    .btn-main {
      padding: 14px 34px;
      border-radius: var(--radius-full);
      background: var(--gradient-main);
      color: #FFF;
      font-weight: 600;
      font-size: 1rem;
      box-shadow: 0 8px 24px rgba(99, 102, 241, 0.28);
      transition: var(--transition);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-main:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 30px rgba(99, 102, 241, 0.4);
    }

    .btn-secondary {
      padding: 14px 28px;
      border-radius: var(--radius-full);
      background: #FFFFFF;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      font-weight: 600;
      font-size: 1rem;
      transition: var(--transition);
      cursor: pointer;
    }

    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #FAFAFA;
    }

    .hero-trust-bar {
      display: flex;
      align-items: center;
      gap: 20px;
      padding-top: 24px;
      border-top: 1px solid rgba(226, 232, 240, 0.8);
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .trust-tag {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .hero-visual-card {
      position: relative;
      border-radius: var(--radius-lg);
      background: #FFF;
      padding: 16px;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }

    .hero-img-wrap {
      border-radius: 14px;
      overflow: hidden;
      position: relative;
      aspect-ratio: 16/11;
      background: #000;
    }

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

    .float-chip {
      position: absolute;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(8px);
      padding: 12px 18px;
      border-radius: var(--radius-md);
      box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.8);
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .float-chip-top {
      top: -16px;
      right: -16px;
    }

    .float-chip-bottom {
      bottom: -18px;
      left: 14px;
    }

    .chip-value {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary-dark);
    }

    .chip-label {
      font-size: 0.775rem;
      color: var(--text-muted);
      line-height: 1.3;
    }

    /* 2. Feature Demo */
    .feature-demo-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .demo-step-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
    }

    .prompt-box {
      background: #F8FAFC;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-sm);
      padding: 16px;
      font-family: monospace;
      font-size: 0.9rem;
      color: #334155;
      margin-bottom: 20px;
      position: relative;
    }

    .prompt-tag {
      position: absolute;
      top: -10px;
      right: 14px;
      background: var(--text-main);
      color: #FFF;
      font-size: 0.7rem;
      padding: 2px 8px;
      border-radius: 4px;
    }

    .step-slider {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .step-slider-row {
      display: flex;
      justify-content: space-between;
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .slider-track {
      width: 100%;
      height: 8px;
      border-radius: 4px;
      background: #E2E8F0;
      position: relative;
      overflow: hidden;
    }

    .slider-fill {
      height: 100%;
      width: 78%;
      background: var(--gradient-main);
      border-radius: 4px;
    }

    .spec-badge-group {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }

    .spec-item {
      background: rgba(99, 102, 241, 0.07);
      color: var(--primary);
      border-radius: var(--radius-full);
      padding: 6px 14px;
      font-size: 0.8rem;
      font-weight: 600;
    }

    .feature-img-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      position: relative;
    }

    .feature-img-card img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .card-floating-tag {
      position: absolute;
      bottom: 20px;
      left: 20px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(8px);
      color: #FFF;
      padding: 10px 18px;
      border-radius: var(--radius-md);
      font-size: 0.85rem;
    }

    /* 3. Core Advantages (6 cards) */
    .grid-3col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .card-box {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 34px 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .card-box:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(99, 102, 241, 0.35);
    }

    .card-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: var(--gradient-subtle);
      border: 1px solid rgba(99, 102, 241, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 1.4rem;
      margin-bottom: 20px;
      font-weight: 700;
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .card-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 4. Product Matrix (3 Big Cards) */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

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

    .product-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }

    .product-thumb {
      height: 220px;
      overflow: hidden;
      position: relative;
    }

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

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

    .product-badge {
      position: absolute;
      top: 14px;
      left: 14px;
      background: var(--gradient-main);
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    }

    .product-body {
      padding: 26px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

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

    .product-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex: 1;
    }

    .product-params {
      background: #F8FAFC;
      border-radius: var(--radius-sm);
      padding: 12px 16px;
      font-size: 0.85rem;
      display: flex;
      justify-content: space-between;
      color: var(--text-body);
      border: 1px solid #EDF2F7;
    }

    /* 5. Deep Tech Infrastructure (Dark) */
    .tech-pipeline-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }

    .tech-step-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 28px 22px;
      position: relative;
      transition: var(--transition);
    }

    .tech-step-card:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--accent);
      transform: translateY(-4px);
    }

    .tech-step-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: rgba(6, 182, 212, 0.25);
      margin-bottom: 8px;
      line-height: 1;
    }

    .tech-step-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 10px;
    }

    .tech-step-desc {
      font-size: 0.875rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 6. Showcase Gallery */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .showcase-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: #FFFFFF;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

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

    .showcase-media {
      height: 250px;
      position: relative;
      overflow: hidden;
    }

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

    .showcase-meta {
      padding: 20px;
    }

    .showcase-tag {
      font-size: 0.75rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 6px;
    }

    .showcase-name {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .showcase-prompt-text {
      font-size: 0.825rem;
      color: var(--text-muted);
      background: #F1F5F9;
      padding: 8px 12px;
      border-radius: 6px;
      line-height: 1.5;
    }

    /* 7. Metric Banner */
    .metrics-bar-section {
      background: var(--gradient-main);
      color: #FFFFFF;
      padding: 60px 0;
    }

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

    .metric-item {
      padding: 10px;
    }

    .metric-number {
      font-size: clamp(2.2rem, 3.5vw, 3rem);
      font-weight: 800;
      color: #FFFFFF;
      line-height: 1.1;
      margin-bottom: 8px;
    }

    .metric-number span {
      color: #A5F3FC;
      font-size: 0.7em;
    }

    .metric-title {
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 4px;
      color: #F8FAFC;
    }

    .metric-desc {
      font-size: 0.825rem;
      color: rgba(255, 255, 255, 0.8);
    }

    /* 8. User Stories & Testimonials */    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }

    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }

    .testimonial-quote {
      font-size: 1.05rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 24px;
      position: relative;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 16px;
      border-top: 1px solid #F1F5F9;
      padding-top: 20px;
    }

    .author-avatar {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--gradient-subtle);
      border: 2px solid var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      font-size: 1.1rem;
    }

    .author-meta-name {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-meta-title {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .author-stat-badge {
      margin-left: auto;
      background: rgba(6, 182, 212, 0.1);
      color: #0891B2;
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.8rem;
      font-weight: 600;
    }

    /* 9. News Insights */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

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

    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(99, 102, 241, 0.3);
    }

    .news-header-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 14px;
    }

    .news-badge {
      background: #EEF2FF;
      color: var(--primary);
      padding: 4px 10px;
      border-radius: 4px;
      font-weight: 600;
    }

    .news-title {
      font-size: 1.18rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .news-excerpt {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex: 1;
    }

    .news-inline-btn {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      cursor: pointer;
      background: none;
      padding: 0;
    }

    .news-inline-btn:hover {
      color: var(--secondary);
    }

    /* 10. Partners Band */
    .partner-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      align-items: center;
      gap: 20px 40px;
    }

    .partner-pill {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 14px 28px;
      border-radius: var(--radius-md);
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-body);
      box-shadow: var(--shadow-sm);
      display: flex;
      align-items: center;
      gap: 10px;
      transition: var(--transition);
    }

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

    .partner-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--accent);
    }

    /* 11. FAQ Accordion */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

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

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: 0 4px 18px rgba(99, 102, 241, 0.1);
    }

    .faq-trigger {
      width: 100%;
      text-align: left;
      padding: 22px 26px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      background: transparent;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-trigger:hover {
      color: var(--primary);
    }

    .faq-icon {
      font-size: 1.2rem;
      font-weight: 400;
      transition: transform 0.3s ease;
      color: var(--primary);
    }

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

    .faq-panel {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 26px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
      background: #FCFDFF;
    }

    .faq-item.active .faq-panel {
      max-height: 240px;
      padding: 0 26px 24px 26px;
    }

    /* 12. Contact / Commercial Conversion CTA */
    .cta-conversion-box {
      background: linear-gradient(135deg, #4338CA 0%, #6366F1 50%, #EC4899 100%);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      color: #FFFFFF;
      box-shadow: var(--shadow-lg);
    }

    .cta-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }

    .cta-title {
      font-size: clamp(1.8rem, 2.6vw, 2.4rem);
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 18px;
      color: #FFFFFF;
    }

    .cta-desc {
      font-size: 1rem;
      line-height: 1.75;
      color: rgba(255, 255, 255, 0.9);
      margin-bottom: 28px;
    }

    .cta-perks-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .cta-perk-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.95rem;
      color: #F8FAFC;
    }

    .cta-perk-item span {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #A5F3FC;
      color: #0F172A;
      font-size: 0.75rem;
      font-weight: 800;
    }

    .cta-form-panel {
      background: #FFFFFF;
      border-radius: 18px;
      padding: 34px;
      box-shadow: var(--shadow-dark);
      color: var(--text-main);
    }

    .form-head-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-head-subtitle {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-body);
    }

    .form-input, .form-select {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      font-size: 0.9rem;
      color: var(--text-main);
      background: #F8FAFC;
      transition: var(--transition);
    }

    .form-input:focus, .form-select:focus {
      border-color: var(--primary);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }

    .form-submit-btn {
      width: 100%;
      height: 48px;
      border-radius: var(--radius-full);
      background: var(--gradient-main);
      color: #FFFFFF;
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
      margin-top: 8px;
    }

    .form-submit-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(99, 102, 241, 0.45);
    }

    .form-privacy-note {
      font-size: 0.75rem;
      color: var(--text-muted);
      text-align: center;
      margin-top: 12px;
      line-height: 1.4;
    }

    /* Footer */
    .site-footer {
      background: var(--bg-dark);
      color: #94A3B8;
      padding: 70px 0 30px 0;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 50px;
    }

    .footer-brand-title {
      font-size: 1.35rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .footer-brand-desc {
      font-size: 0.88rem;
      line-height: 1.7;
      color: #94A3B8;
      max-width: 380px;
    }

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

    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links-list a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }

    .footer-contact-info {
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.88rem;
    }

    .footer-contact-info strong {
      color: #FFFFFF;
    }

    .footer-bottom-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 26px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8rem;
      color: #64748B;
    }

    .footer-icp {
      color: #94A3B8;
    }

    .footer-icp:hover {
      color: #FFFFFF;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-grid, .cta-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .grid-3col, .product-grid, .showcase-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .tech-pipeline-grid, .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      section {
        padding: 60px 0;
      }
      .topbar {
        display: none;
      }
      .mobile-toggle {
        display: flex;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
        gap: 18px;
      }
      .nav-links.open {
        display: flex;
      }
      .grid-3col, .product-grid, .showcase-grid, .news-grid, .testimonials-grid {
        grid-template-columns: 1fr;
      }
      .feature-demo-grid {
        grid-template-columns: 1fr;
      }
      .tech-pipeline-grid, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom-bar {
        flex-direction: column;
        align-items: flex-start;
      }
      .cta-conversion-box {
        padding: 32px 20px;
      }
      .cta-form-panel {
        padding: 24px 18px;
      }
    }