/* CSS Reset & Variables */
    :root {
      --rainbow-red: #ff4d4f;
      --rainbow-orange: #ff7a45;
      --rainbow-yellow: #ffc53d;
      --rainbow-green: #52c41a;
      --rainbow-cyan: #13c2c2;
      --rainbow-blue: #1890ff;
      --rainbow-purple: #722ed1;
      --rainbow-pink: #eb2f96;
      
      --gradient-rainbow: linear-gradient(135deg, #ff4d4f 0%, #ff7a45 15%, #ffc53d 30%, #52c41a 50%, #13c2c2 70%, #1890ff 85%, #722ed1 100%);
      --gradient-soft: linear-gradient(135deg, rgba(255, 77, 79, 0.08) 0%, rgba(24, 144, 255, 0.08) 50%, rgba(114, 46, 209, 0.08) 100%);
      --gradient-card: linear-gradient(180deg, #ffffff 0%, #f9fbfd 100%);
      --gradient-btn: linear-gradient(90deg, #ff5722 0%, #ff9800 25%, #4caf50 50%, #2196f3 75%, #9c27b0 100%);
      
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --text-light: #94a3b8;
      --border-color: #e2e8f0;
      
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 24px rgba(148, 163, 184, 0.12);
      --shadow-lg: 0 16px 40px rgba(100, 116, 139, 0.15);
      --shadow-rainbow: 0 10px 30px rgba(24, 144, 255, 0.2);
      
      --container-width: 1200px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
      background-image: 
        radial-gradient(at 0% 0%, rgba(255, 77, 79, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(24, 144, 255, 0.05) 0px, transparent 50%),
        radial-gradient(at 50% 100%, rgba(114, 46, 209, 0.05) 0px, transparent 50%);
      background-attachment: fixed;
    }

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

    /* Rainbow Gradient Line Decoration */
    .rainbow-strip {
      height: 4px;
      width: 100%;
      background: var(--gradient-rainbow);
      position: relative;
      z-index: 1000;
    }

    /* Typography */
    h1, h2, h3, h4 {
      color: var(--text-main);
      font-weight: 700;
      line-height: 1.3;
    }

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

    /* Header & Navigation */
    .site-header {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      position: sticky;
      top: 0;
      z-index: 999;
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-logo-wrap .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-text-name {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(90deg, #ff4d4f, #1890ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 600;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      color: #334155;
    }

    .nav-links li a:hover {
      color: #1890ff;
      background: rgba(24, 144, 255, 0.08);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-full);
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-rainbow-cta {
      background: var(--gradient-rainbow);
      background-size: 200% auto;
      color: #ffffff !important;
      box-shadow: 0 4px 15px rgba(24, 144, 255, 0.3);
      animation: rainbowShift 4s ease infinite;
    }

    .btn-rainbow-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 77, 79, 0.4);
    }

    .btn-outline {
      border-color: #cbd5e1;
      background: #ffffff;
      color: #334155;
    }

    .btn-outline:hover {
      border-color: #1890ff;
      color: #1890ff;
      background: #f0f7ff;
    }

    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .nav-toggle span {
      width: 24px;
      height: 2px;
      background: var(--text-main);
      transition: var(--transition);
    }

    /* Section Global Headers */
    .section-spacing {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }

    .badge-pill {
      display: inline-block;
      padding: 6px 16px;
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: var(--radius-full);
      margin-bottom: 14px;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      background: linear-gradient(90deg, rgba(255, 77, 79, 0.12), rgba(24, 144, 255, 0.12));
      color: #1890ff;
      border: 1px solid rgba(24, 144, 255, 0.2);
    }

    .section-title {
      font-size: 2.2rem;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. Hero Section - No Images */
    .hero-section {
      padding: 90px 0 70px 0;
      text-align: center;
      position: relative;
      overflow: hidden;
      background: radial-gradient(circle at 50% 30%, rgba(255, 240, 240, 0.6) 0%, rgba(240, 247, 255, 0.6) 50%, rgba(248, 250, 252, 1) 100%);
    }

    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
      color: #0f172a;
    }

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

    .hero-subtitle {
      font-size: 1.2rem;
      color: #475569;
      max-width: 820px;
      margin: 0 auto 36px auto;
      line-height: 1.8;
    }

    .hero-btn-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .btn-hero-primary {
      padding: 14px 34px;
      font-size: 1.1rem;
      border-radius: var(--radius-full);
      box-shadow: 0 8px 25px rgba(255, 77, 79, 0.35);
    }

    .hero-stats-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: #ffffff;
      padding: 30px;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      border-top: 3px solid transparent;
      border-image: var(--gradient-rainbow) 1;
    }

    .stat-item {
      text-align: center;
    }

    .stat-num {
      font-size: 2rem;
      font-weight: 800;
      background: linear-gradient(135deg, #1890ff, #722ed1);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* Model Cloud Ribbon */
    .model-ribbon-wrap {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 24px 0;
    }

    .model-ribbon-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-muted);
      text-align: center;
      margin-bottom: 16px;
      letter-spacing: 1px;
    }

    .model-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-pill {
      font-size: 0.85rem;
      font-weight: 600;
      padding: 6px 14px;
      background: #f1f5f9;
      border-radius: var(--radius-full);
      color: #334155;
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }

    .model-pill:hover {
      background: var(--gradient-rainbow);
      color: #ffffff;
      transform: translateY(-2px);
      border-color: transparent;
    }

    /* Platform Overview */
    .intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .intro-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .intro-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: #93c5fd;
    }

    .intro-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: var(--gradient-rainbow);
      opacity: 0;
      transition: var(--transition);
    }

    .intro-card:hover::before {
      opacity: 1;
    }

    .intro-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--gradient-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      color: #1890ff;
    }

    .intro-card h3 {
      font-size: 1.25rem;
      margin-bottom: 12px;
    }

    .intro-card p {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
    }

    /* Feature Service Grid */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 20px;
    }

    .service-box {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-box:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #60a5fa;
    }

    .service-tag {
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 10px;
      background: #f8fafc;
      color: #475569;
      border-radius: var(--radius-full);
      align-self: flex-start;
      margin-bottom: 14px;
      border: 1px solid #e2e8f0;
    }

    .service-box h3 {
      font-size: 1.15rem;
      margin-bottom: 10px;
      color: #0f172a;
    }

    .service-box p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 16px;
    }

    .service-link {
      font-size: 0.9rem;
      font-weight: 700;
      color: #1890ff;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* One Stop Showcase with Media */
    .showcase-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
      margin-bottom: 40px;
    }

    .showcase-content h3 {
      font-size: 1.8rem;
      margin-bottom: 16px;
      color: #0f172a;
    }

    .showcase-content p {
      font-size: 1rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.8;
    }

    .showcase-features {
      list-style: none;
      margin-bottom: 28px;
    }

    .showcase-features li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.95rem;
      font-weight: 600;
      color: #334155;
      margin-bottom: 10px;
    }

    .showcase-features li span {
      color: #52c41a;
      font-weight: bold;
    }

    .media-card {
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
    }

    .media-card img {
      width: 100%;
      height: auto;
      border-radius: var(--radius-md);
      display: block;
      transition: var(--transition);
    }

    .media-card:hover img {
      transform: scale(1.02);
    }

    .media-gallery-tri {
      display: grid;
      grid-template-columns: 1.2fr 1fr 1fr;
      gap: 20px;
      margin-top: 30px;
    }

    /* Process Workflow */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-step {
      background: #ffffff;
      padding: 28px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }

    .process-step:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #ff7a45;
    }

    .step-number {
      width: 44px;
      height: 44px;
      line-height: 44px;
      border-radius: 50%;
      background: var(--gradient-rainbow);
      color: #ffffff;
      font-weight: 800;
      font-size: 1.1rem;
      margin: 0 auto 16px auto;
    }

    .process-step h3 {
      font-size: 1.15rem;
      margin-bottom: 10px;
    }

    .process-step p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Comparison Table Section */
    .comparison-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      overflow-x: auto;
    }

    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: var(--gradient-soft);
      padding: 20px 30px;
      border-radius: var(--radius-md);
      border: 1px solid #bae0ff;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .rating-badge {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .star-score {
      font-size: 2.2rem;
      font-weight: 900;
      color: #ff4d4f;
    }

    .star-desc {
      font-size: 0.95rem;
      color: #334155;
    }

    .star-stars {
      color: #ffc53d;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

    .compare-table th {
      background: #f8fafc;
      color: #1e293b;
      font-weight: 700;
    }

    .compare-table td.highlight {
      background: rgba(24, 144, 255, 0.04);
      color: #1890ff;
      font-weight: 700;
    }

    .compare-table .status-good {
      color: #52c41a;
      font-weight: bold;
    }

    .compare-table .status-bad {
      color: #94a3b8;
    }

    /* Reviews Section */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

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

    .review-stars {
      color: #ffc53d;
      font-size: 1rem;
      margin-bottom: 14px;
    }

    .review-text {
      font-size: 0.95rem;
      color: #475569;
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 16px;
    }

    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--gradient-rainbow);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1rem;
    }

    .author-info h4 {
      font-size: 0.95rem;
      margin-bottom: 2px;
    }

    .author-info span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FAQ Accordion */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: #93c5fd;
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #1e293b;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-arrow {
      width: 18px;
      height: 18px;
      transition: transform 0.3s ease;
      stroke: #64748b;
    }

    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
      stroke: #1890ff;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #f8fafc;
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 24px 24px 24px;
      border-top: 1px solid #f1f5f9;
    }

    .faq-answer p {
      font-size: 0.95rem;
      color: #475569;
      line-height: 1.7;
    }

    /* Articles & Knowledge Area */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
    }

    .article-box {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .article-box:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #1890ff;
    }

    .article-date {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-bottom: 8px;
    }

    .article-box h3 {
      font-size: 1.1rem;
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .article-box p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.6;
    }

    .article-link-btn {
      font-size: 0.85rem;
      font-weight: 700;
      color: #1890ff;
    }

    /* Form & Contact Section */
    .contact-container {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 36px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: #334155;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      background: #f8fafc;
      transition: var(--transition);
      outline: none;
    }

    .form-control:focus {
      border-color: #1890ff;
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(24, 144, 255, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    .contact-info-panel {
      background: var(--gradient-soft);
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid #dbeafe;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-list {
      list-style: none;
      margin-bottom: 24px;
    }

    .contact-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: #334155;
      margin-bottom: 14px;
    }

    .qr-card {
      text-align: center;
      background: #ffffff;
      padding: 16px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid #e2e8f0;
      max-width: 200px;
      margin: 0 auto;
    }

    .qr-card img {
      max-width: 140px;
      height: auto;
      border-radius: 6px;
      margin-bottom: 8px;
      display: block;
      margin-left: auto;
      margin-right: auto;
    }

    .qr-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* Partner & Friend Links */
    .links-box {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      margin-top: 40px;
    }

    .links-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .links-list a {
      font-size: 0.88rem;
      color: #475569;
      background: #f1f5f9;
      padding: 6px 14px;
      border-radius: var(--radius-full);
      border: 1px solid #e2e8f0;
    }

    .links-list a:hover {
      background: #e2e8f0;
      color: #1890ff;
    }

    /* Footer */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 60px 0 30px 0;
      margin-top: 80px;
      border-top: 4px solid #1890ff;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.05rem;
      margin-bottom: 18px;
      position: relative;
    }

    .footer-col h4::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -6px;
      width: 24px;
      height: 2px;
      background: var(--gradient-rainbow);
    }

    .footer-col ul {
      list-style: none;
    }

    .footer-col ul li {
      margin-bottom: 10px;
    }

    .footer-col ul li a {
      color: #94a3b8;
      font-size: 0.9rem;
    }

    .footer-col ul li a:hover {
      color: #ffffff;
      padding-left: 4px;
    }

    .footer-bottom {
      border-top: 1px solid #334155;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    .footer-bottom p {
      margin-bottom: 6px;
    }

    /* Floating Action & Back to Top */
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 14px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      color: #1e293b;
    }

    .float-btn:hover {
      background: var(--gradient-rainbow);
      color: #ffffff;
      transform: translateY(-3px);
    }

    /* Keyframes */
    @keyframes rainbowShift {
      0% { background-position: 0% 50%; }
      50% { background-position: 100% 50%; }
      100% { background-position: 0% 50%; }
    }

    /* Responsive */
    @media (max-width: 992px) {
      .hero-h1 { font-size: 2.2rem; }
      .intro-grid { grid-template-columns: repeat(2, 1fr); }
      .process-timeline { grid-template-columns: repeat(2, 1fr); }
      .reviews-grid { grid-template-columns: repeat(2, 1fr); }
      .showcase-grid { grid-template-columns: 1fr; }
      .contact-container { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .nav-toggle { display: flex; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
      }
      .nav-links.active { display: flex; }
      .hero-h1 { font-size: 1.8rem; }
      .hero-stats-bar { grid-template-columns: repeat(2, 1fr); }
      .intro-grid { grid-template-columns: 1fr; }
      .process-timeline { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .media-gallery-tri { grid-template-columns: 1fr; }
    }