:root {
      --sf: 'Space Grotesk', sans-serif;
      --bf: 'Inter', sans-serif;
      --deep-sea: #0a1628;
      --purple: #8b5cf6;
      --blue: #00adff;
      --mint: #00d9c0;
      --white: #ffffff;
      --gray-300: #d1d5db;
      --gray-400: #9ca3af;
      --gray-500: #6b7280;

      /* HubSpot Dark Theme Custom Properties */
      --hsf-global__font-family: 'Inter', sans-serif;
      --hsf-global__font-size: 14px;
      --hsf-global__color: #d1d5db;
      --hsf-global-error__color: #f87171;
      --hsf-background__background-color: transparent;
      --hsf-background__border-color: transparent;
      --hsf-background__border-radius: 0px;
      --hsf-background__padding: 0px;
      --hsf-field-input__background-color: rgba(255, 255, 255, 0.1);
      --hsf-field-input__border-color: rgba(255, 255, 255, 0.2);
      --hsf-field-input__border-radius: 8px;
      --hsf-field-input__color: #ffffff;
      --hsf-field-input__font-size: 16px;
      --hsf-field-input__placeholder-color: #9ca3af;
      --hsf-field-label__color: #d1d5db;
      --hsf-field-label__font-size: 14px;
      --hsf-button__background-color: rgba(139, 92, 246, 0.8);
      --hsf-button__color: #ffffff;
      --hsf-button__border-color: rgba(139, 92, 246, 0.5);
      --hsf-button__border-radius: 8px;
      --hsf-button__font-family: 'Inter', sans-serif;
      --hsf-button__font-size: 14px;
      --hsf-button__font-weight: 500;
      --hsf-button--hover__background-color: #8b5cf6;
      --hsf-button--hover__color: #ffffff;
      --hsf-button--hover__border-color: #8b5cf6;
      --hsf-legal-consent__color: #9ca3af;
      --hsf-legal-consent__font-size: 12px;
      --hsf-rich-text__color: #9ca3af;
      --hsf-rich-text__font-size: 12px;
      --hsf-row__vertical-spacing: 16px;
      --hsf-module__vertical-spacing: 12px;
    }

    /* ========================================
       1. Reset & Body Defaults (§0.4)
       ======================================== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: var(--bf);
      font-size: 1rem;
      line-height: 1.5;
      color: var(--gray-300);
      background: linear-gradient(135deg, #0a1628 0%, #0d1a2d 50%, #0a1628 100%);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    /* ========================================
       2. Tailwind Utility Classes (§0.2)
       ======================================== */
    .text-5xl  { font-size: 3rem; line-height: 1; }
    .text-4xl  { font-size: 2.25rem; line-height: 2.5rem; }
    .text-3xl  { font-size: 1.875rem; line-height: 2.25rem; }
    .text-2xl  { font-size: 1.5rem; line-height: 2rem; }
    .text-xl   { font-size: 1.25rem; line-height: 1.75rem; }
    .text-lg   { font-size: 1.125rem; line-height: 1.75rem; }
    .text-base { font-size: 1rem; line-height: 1.5rem; }
    .text-sm   { font-size: 0.875rem; line-height: 1.25rem; }
    .text-xs   { font-size: 0.75rem; line-height: 1rem; }

    .font-bold      { font-weight: 700; }
    .font-semibold  { font-weight: 600; }
    .font-medium    { font-weight: 500; }

    .text-white     { color: var(--white); }
    .text-gray-300  { color: var(--gray-300); }
    .text-gray-400  { color: var(--gray-400); }

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

    .mb-2  { margin-bottom: 0.5rem; }
    .mb-3  { margin-bottom: 0.75rem; }
    .mb-4  { margin-bottom: 1rem; }
    .mb-6  { margin-bottom: 1.5rem; }
    .mb-8  { margin-bottom: 2rem; }
    .mb-12 { margin-bottom: 3rem; }
    .mb-16 { margin-bottom: 4rem; }
    .mt-4  { margin-top: 1rem; }
    .mt-16 { margin-top: 4rem; }
    .pt-8  { padding-top: 2rem; }
    .pt-32 { padding-top: 8rem; }

    .py-16 { padding-top: 4rem; padding-bottom: 4rem; }
    .py-20 { padding-top: 5rem; padding-bottom: 5rem; }
    .px-6  { padding-left: 1.5rem; padding-right: 1.5rem; }
    .p-6   { padding: 1.5rem; }
    .p-8   { padding: 2rem; }

    .relative  { position: relative; }
    .z-10      { z-index: 10; }

    .max-w-7xl { max-width: 80rem; }
    .mx-auto   { margin-left: auto; margin-right: auto; }

    .flex          { display: flex; }
    .inline-flex   { display: inline-flex; }
    .items-center  { align-items: center; }
    .items-start   { align-items: flex-start; }
    .justify-center { justify-content: center; }
    .flex-col      { flex-direction: column; }
    .flex-wrap     { flex-wrap: wrap; }
    .flex-shrink-0 { flex-shrink: 0; }
    .flex-grow     { flex-grow: 1; }
    .gap-1  { gap: 0.25rem; }
    .gap-2  { gap: 0.5rem; }
    .gap-3  { gap: 0.75rem; }
    .gap-4  { gap: 1rem; }
    .gap-6  { gap: 1.5rem; }
    .gap-8  { gap: 2rem; }

    .space-y-2 > * + * { margin-top: 0.5rem; }
    .space-y-4 > * + * { margin-top: 1rem; }

    .rounded-lg  { border-radius: 0.5rem; }
    .rounded-xl  { border-radius: 0.75rem; }
    .rounded-2xl { border-radius: 1rem; }
    .rounded-full { border-radius: 9999px; }

    .overflow-hidden { overflow: hidden; }

    .not-italic { font-style: normal; }
    .leading-relaxed { line-height: 1.625; }
    .underline { text-decoration: underline; }

    .transition-all     { transition: all 0.3s; }
    .transition-colors  { transition: color 0.3s; }
    .transition-transform { transition: transform 0.3s; }

    .cursor-pointer { cursor: pointer; }

    /* ========================================
       3. Gradient Text (§2)
       ======================================== */
    .grad-text {
      color: #8b5cf6; /* solid fallback */
      background: linear-gradient(90deg, #8b5cf6 0%, #00adff 50%, #00d9c0 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    /* ========================================
       4. Accessibility (§9)
       ======================================== */
    a:focus-visible, button:focus-visible, input:focus-visible,
    textarea:focus-visible, select:focus-visible {
      outline: 2px solid #8b5cf6;
      outline-offset: 2px;
      border-radius: 4px;
    }
    .skip-link {
      position: absolute; left: -9999px; top: 0; z-index: 100;
      background: #8b5cf6; color: white;
      padding: 12px 24px; border-radius: 0 0 8px 0;
      font-family: var(--bf); font-size: 14px; font-weight: 500;
      text-decoration: none;
    }
    .skip-link:focus { left: 0 !important; }
    .visually-hidden {
      position: absolute; width: 1px; height: 1px; padding: 0;
      margin: -1px; overflow: hidden; clip: rect(0,0,0,0);
      white-space: nowrap; border: 0;
    }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
      }
      .logo-scroll { animation: none !important; }
    }

    /* ========================================
       5. Ambient Background Glows
       ======================================== */
    .ambient-glow-top {
      position: fixed; inset: 0; pointer-events: none; z-index: 0;
      background: radial-gradient(ellipse 80% 50% at 70% 20%, rgba(139,92,246,0.06) 0%, transparent 50%);
    }
    .ambient-glow-bottom {
      position: fixed; inset: 0; pointer-events: none; z-index: 0;
      background: radial-gradient(ellipse 60% 40% at 30% 70%, rgba(139,92,246,0.04) 0%, transparent 50%);
    }

    /* ========================================
       6. Glass Card — Standard (for form, newsletter)
       ======================================== */
    .glass {
      background: rgba(255,255,255,0.05);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 16px;
      padding: 24px;
      box-shadow: 0 8px 32px rgba(0,0,0,0.3);
      transition: all 0.5s cubic-bezier(0.4,0,0.2,1);
      position: relative;
      overflow: hidden;
    }
    .glass::before {
      content: '';
      position: absolute; inset: 0;
      background: radial-gradient(ellipse at 50% 0%, rgba(139,92,246,0.08) 0%, transparent 60%);
      opacity: 0; transition: opacity 0.5s; pointer-events: none;
    }
    .glass:hover {
      background: rgba(255,255,255,0.07);
      backdrop-filter: blur(24px) saturate(1.1);
      -webkit-backdrop-filter: blur(24px) saturate(1.1);
      border-color: rgba(139,92,246,0.2);
      box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 20px rgba(139,92,246,0.08);
      transform: translateY(-2px);
    }
    .glass:hover::before { opacity: 1; }
    .glass > * { position: relative; z-index: 1; }

    /* Glass card without hover (for the form) */
    .glass-static {
      background: rgba(255,255,255,0.05);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 16px;
      box-shadow: 0 8px 32px rgba(0,0,0,0.3);
      position: relative;
      overflow: hidden;
    }

    /* ========================================
       6b. Feature Card — Light Glass (per spec)
       ======================================== */
    .card-light {
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 0.75rem;
      padding: 1.75rem 1.5rem;
      box-shadow: none;
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
      overflow: hidden;
      position: relative;
      transition: all 0.5s cubic-bezier(0.4,0,0.2,1);
    }
    .card-light::before {
      content: '';
      position: absolute; inset: 0;
      background: radial-gradient(ellipse at 50% 0%, rgba(139,92,246,0.08) 0%, transparent 60%);
      opacity: 0; transition: opacity 0.5s; pointer-events: none;
    }
    .card-light:hover {
      background: rgba(255,255,255,0.07);
      border-color: rgba(139,92,246,0.2);
      box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 20px rgba(139,92,246,0.08);
      transform: translateY(-2px);
    }
    .card-light:hover::before { opacity: 1; }
    .card-light > * { position: relative; z-index: 1; }

    /* ========================================
       7. Primary Button (§5.1)
       ======================================== */
    .btn-primary {
      position: relative; overflow: hidden;
      display: inline-flex; align-items: center; gap: 8px;
      padding: 12px 24px; border-radius: 8px;
      font-family: var(--bf); font-size: 14px; font-weight: 500;
      color: white; text-decoration: none;
      background: rgba(139,92,246,0.8);
      border: 1px solid rgba(139,92,246,0.5);
      backdrop-filter: blur(10px);
      box-shadow: 0 4px 16px rgba(0,0,0,0.2);
      transition: all 0.3s; cursor: pointer;
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 32px rgba(139,92,246,0.3);
    }
    .btn-primary .btn-fill {
      position: absolute; inset: 0;
      background: linear-gradient(90deg, #8b5cf6, #00adff);
      transform: translateX(-100%);
      transition: transform 0.5s;
    }
    .btn-primary:hover .btn-fill { transform: translateX(0); }
    .btn-primary .btn-text,
    .btn-primary .btn-arrow { position: relative; z-index: 1; }
    .btn-primary:hover .btn-arrow { transform: translateX(4px); }
    .btn-primary .btn-arrow { transition: transform 0.3s; }

    /* ========================================
       8. Secondary Button (§0.10, Cross-Page Spec)
       ======================================== */
    .btn-secondary {
      position: relative;
      display: inline-flex; align-items: center; gap: 8px;
      padding: 12px 24px; border-radius: 8px;
      font-family: var(--bf); font-size: 14px; font-weight: 500;
      color: white; text-decoration: none;
      background: rgba(255,255,255,0.05);
      backdrop-filter: blur(10px);
      overflow: visible; /* Critical: §0.10 */
      transition: all 0.3s; cursor: pointer;
      border: none;
    }
    .btn-secondary .btn-border-static {
      position: absolute; inset: 0; border-radius: 8px;
      border: 1px solid rgba(255,255,255,0.2);
      transition: opacity 0.3s; pointer-events: none;
    }
    .btn-secondary:hover .btn-border-static { opacity: 0; }
    .btn-secondary .border-svg {
      position: absolute; inset: 0;
      width: 100%; height: 100%;
      overflow: visible; /* Critical: §0.10 */
    }
    .btn-secondary .border-svg rect {
      stroke-dasharray: 1000; /* Critical: §0.10 — never 500 */
      stroke-dashoffset: 1000;
      transition: stroke-dashoffset 0.6s ease-out;
    }
    .btn-secondary:hover .border-svg rect { stroke-dashoffset: 0; }
    .btn-secondary .btn-glow {
      position: absolute; inset: 0; border-radius: 8px;
      box-shadow: 0 0 20px rgba(139,92,246,0.3);
      opacity: 0; transition: opacity 0.3s; pointer-events: none;
    }
    .btn-secondary:hover .btn-glow { opacity: 1; }
    .btn-secondary:hover {
      background: rgba(255,255,255,0.1);
      transform: translateY(-2px);
    }
    .btn-secondary .btn-text,
    .btn-secondary .btn-arrow { position: relative; z-index: 1; }
    .btn-secondary:hover .btn-arrow { transform: translateX(4px); }
    .btn-secondary .btn-arrow { transition: transform 0.3s; }

    /* ========================================
       9. Product Card (coloured variant)
       ======================================== */
    .product-card {
      border-radius: 0.75rem; padding: 1.75rem 1.5rem;
      display: flex; flex-direction: column;
      background: rgba(255,255,255,0.03);
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
      box-shadow: none;
      transition: all 0.5s cubic-bezier(0.4,0,0.2,1);
      height: 100%; position: relative; overflow: hidden;
    }
    .product-card::before {
      content: '';
      position: absolute; inset: 0;
      opacity: 0; transition: opacity 0.5s; pointer-events: none;
    }
    .product-card:hover {
      background: rgba(255,255,255,0.07);
      transform: translateY(-2px);
    }
    .product-card:hover::before { opacity: 1; }
    .product-card > * { position: relative; z-index: 1; }

    /* Product subtitle row (dot + tagline) */
    .product-subtitle {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 1rem;
    }
    .product-dot {
      width: 10px; height: 10px;
      border-radius: 50%;
      flex-shrink: 0;
    }
    .product-tagline {
      font-family: var(--sf);
      font-size: 0.8rem;
      font-weight: 500;
      letter-spacing: 0.03em;
    }

    /* Product image zone */
    .product-img-zone {
      border-radius: 10px;
      padding: 1rem;
      margin-bottom: 1.25rem;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 140px;
    }
    .product-card .product-img {
      width: 100%;
      height: auto;
      object-fit: contain;
      max-height: 160px;
    }

    .product-card--lms {
      border: 1px solid rgba(0,173,255,0.12);
    }
    .product-card--lms:hover {
      border-color: rgba(0,173,255,0.35);
      box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 20px rgba(0,173,255,0.12);
    }
    .product-card--lms::before {
      background: radial-gradient(ellipse at 50% 0%, rgba(0,173,255,0.08) 0%, transparent 60%);
    }

    .product-card--app {
      border: 1px solid rgba(0,217,192,0.12);
    }
    .product-card--app:hover {
      border-color: rgba(0,217,192,0.35);
      box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 20px rgba(0,217,192,0.12);
    }
    .product-card--app::before {
      background: radial-gradient(ellipse at 50% 0%, rgba(0,217,192,0.08) 0%, transparent 60%);
    }

    .product-card--at {
      border: 1px solid rgba(139,92,246,0.12);
    }
    .product-card--at:hover {
      border-color: rgba(139,92,246,0.35);
      box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 20px rgba(139,92,246,0.12);
    }
    .product-card--at::before {
      background: radial-gradient(ellipse at 50% 0%, rgba(139,92,246,0.08) 0%, transparent 60%);
    }

    .product-card-btn {
      position: relative; overflow: hidden;
      width: 100%; padding: 12px 0; border-radius: 8px;
      font-family: var(--bf); font-size: 14px; font-weight: 500;
      color: white; text-decoration: none; text-align: center;
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      backdrop-filter: blur(10px);
      box-shadow: 0 4px 16px rgba(0,0,0,0.2);
      transition: all 0.3s; cursor: pointer;
    }
    .product-card-btn:hover {
      transform: translateY(-2px);
    }
    .product-card-btn .btn-fill {
      position: absolute; inset: 0;
      transform: translateX(-100%);
      transition: transform 0.5s;
    }
    .product-card-btn:hover .btn-fill { transform: translateX(0); }
    .product-card-btn .btn-text,
    .product-card-btn .btn-arrow { position: relative; z-index: 1; }
    .product-card-btn:hover .btn-arrow { transform: translateX(4px); }
    .product-card-btn .btn-arrow { transition: transform 0.3s; }

    .product-card-btn--lms {
      background: rgba(0,173,255,0.8);
      border: 1px solid rgba(0,173,255,0.5);
    }
    .product-card-btn--lms:hover {
      box-shadow: 0 8px 32px rgba(0,173,255,0.3);
    }
    .product-card-btn--lms .btn-fill {
      background: linear-gradient(90deg, #00adff, #00d9c0);
    }

    .product-card-btn--app {
      background: rgba(0,217,192,0.8);
      border: 1px solid rgba(0,217,192,0.5);
    }
    .product-card-btn--app:hover {
      box-shadow: 0 8px 32px rgba(0,217,192,0.3);
    }
    .product-card-btn--app .btn-fill {
      background: linear-gradient(90deg, #00d9c0, #00adff);
    }

    .product-card-btn--at {
      background: rgba(139,92,246,0.8);
      border: 1px solid rgba(139,92,246,0.5);
    }
    .product-card-btn--at:hover {
      box-shadow: 0 8px 32px rgba(139,92,246,0.3);
    }
    .product-card-btn--at .btn-fill {
      background: linear-gradient(90deg, #8b5cf6, #00adff);
    }

    /* ========================================
       10. Icon Mask Technique (§3)
       ======================================== */
    .icon-gradient {
      display: inline-block;
      background: linear-gradient(135deg, #8b5cf6, #00adff, #00d9c0);
      -webkit-mask-image: var(--icon-url);
      -webkit-mask-size: contain;
      -webkit-mask-repeat: no-repeat;
      -webkit-mask-position: center;
      mask-image: var(--icon-url);
      mask-size: contain;
      mask-repeat: no-repeat;
      mask-position: center;
    }

    /* Icon container for contact cards: 2.5rem circles */
    .icon-container-sm {
      width: 2.5rem; height: 2.5rem; border-radius: 0.5rem;
      display: flex; align-items: center; justify-content: center;
      background: linear-gradient(135deg, rgba(139,92,246,0.2), rgba(0,173,255,0.2));
      flex-shrink: 0;
    }

    /* ========================================
       11. Client Logo Carousel
       ======================================== */
    @keyframes scrollLogos { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
    .logo-scroll {
      animation: scrollLogos 30s linear infinite;
      display: flex; align-items: center; gap: 48px; height: 100%;
    }
    .logo-scroll:hover { animation-play-state: paused; }
    .logo-carousel {
      -webkit-mask-image: linear-gradient(90deg, transparent 0%, black 12%, black 88%, transparent 100%);
      mask-image: linear-gradient(90deg, transparent 0%, black 12%, black 88%, transparent 100%);
    }
    .logo-item {
      min-width: 120px; height: 110px; flex-shrink: 0;
      display: flex; align-items: center; justify-content: center;
      padding: 8px;
    }
    .logo-item img {
      max-height: 88px; max-width: 88px;
      object-fit: contain;
      opacity: 0.75;
      transition: opacity 0.3s;
    }
    .logo-item img:hover { opacity: 1; }

    /* Carousel pause/play toggle (WCAG 2.2.2 — keyboard only) */
    .carousel-toggle {
      position: absolute; top: 4px; right: 4px; z-index: 20;
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: 6px; padding: 4px 10px;
      color: var(--gray-400); font-size: 11px;
      font-family: var(--bf); cursor: pointer;
      opacity: 0; pointer-events: none; transition: opacity 0.3s;
    }
    .carousel-toggle:focus-visible {
      opacity: 1; pointer-events: auto;
    }
    .logo-scroll.paused { animation-play-state: paused !important; }

    /* ========================================
       12. Micro CTA
       ======================================== */
    .micro-cta {
      font-size: 14px; font-weight: 500;
      display: inline-flex; align-items: center; gap: 4px;
      color: var(--blue); text-decoration: none;
    }
    .micro-cta-label { position: relative; }
    .micro-cta-underline {
      position: absolute; bottom: 0; left: 0;
      width: 100%; height: 1px;
      background: var(--blue);
      transform: scaleX(0); transform-origin: left;
      transition: transform 0.3s;
    }
    .micro-cta:hover .micro-cta-underline { transform: scaleX(1); }
    .micro-cta .micro-cta-arrow { transition: transform 0.3s; }
    .micro-cta:hover .micro-cta-arrow { transform: translateX(4px); }

    /* ========================================
       13. Social Icons
       ======================================== */
    .social-icon-link {
      position: relative; width: 56px; height: 56px;
      border-radius: 12px; display: flex; align-items: center; justify-content: center;
      background: rgba(255,255,255,0.03);
      transition: all 0.3s; text-decoration: none;
    }
    .social-icon-link:hover {
      transform: translateY(-4px);
      box-shadow: 0 8px 24px rgba(139,92,246,0.3), 0 0 20px rgba(0,173,255,0.2);
    }
    .social-icon-border {
      position: absolute; inset: 0; border-radius: 12px; padding: 1px;
      background: linear-gradient(135deg, #8b5cf6 0%, #00adff 50%, #00d9c0 100%);
    }
    .social-icon-border-inner {
      width: 100%; height: 100%; border-radius: 11px;
      background: rgba(10,22,40,0.95);
    }
    .social-icon-inner {
      position: relative; z-index: 1;
      width: 1.5rem; height: 1.5rem;
      background: linear-gradient(135deg, #00adff, #8b5cf6);
      transition: all 0.3s;
    }
    .social-icon-link:hover .social-icon-inner {
      background: linear-gradient(135deg, #ffffff, #ffffff);
    }

    /* ========================================
       14. Check Icon
       ======================================== */
    .check-icon {
      width: 20px; height: 20px; flex-shrink: 0; margin-top: 4px;
    }

    /* ========================================
       15. Contact Cards Grid
       ======================================== */
    .contact-cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    /* ========================================
       17. Product Grid
       ======================================== */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.5rem;
    }

    /* ========================================
       18. Two-Column Section
       ======================================== */
    .two-col-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 3rem;
      align-items: center;
    }

    /* ========================================
       19. Hero Layout
       ======================================== */
    .hero-content-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4.5rem;
      align-items: center;
    }
    .hero-image-col {
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: visible; /* §4 */
    }
    .hero-image {
      width: 100%;
      max-width: 520px;
      object-fit: contain;
      transform: scale(1.3); /* §4 */
      transform-origin: center center;
      filter: drop-shadow(0 0 16px rgba(139,92,246,0.15))
             drop-shadow(0 0 32px rgba(0,173,255,0.1));
    }

    @media (max-width: 768px) {
      .hero-content-grid {
        grid-template-columns: 1fr;
      }
      .hero-image {
        max-width: 320px;
        transform: scale(1.1);
        margin: 0 auto;
        display: block;
      }
      .hero-image-col {
        order: 2;
      }
    }

    /* ========================================
       20. Newsletter Section (§7.2)
       ======================================== */
    .newsletter-card-wrap {
      padding: 2px;
      border-radius: 18px;
      background: linear-gradient(135deg,
        rgba(139,92,246,.4), rgba(0,173,255,.25), rgba(0,217,192,.4));
      transition: all .5s cubic-bezier(.4,0,.2,1);
    }
    .newsletter-card-wrap:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 32px rgba(0,0,0,.35),
                 0 0 20px rgba(139,92,246,.08);
    }
    .newsletter-card-wrap .glass {
      background: linear-gradient(
        rgba(255,255,255,.05), rgba(255,255,255,.05)
      ), #0a1628;
      border: none;
      border-radius: 16px;
      transform: none !important;
    }
    .newsletter-card-wrap .glass::before { display: none; }
    .newsletter-card-wrap .glass:hover {
      background: linear-gradient(
        rgba(255,255,255,.05), rgba(255,255,255,.05)
      ), #0a1628;
      border: none;
      box-shadow: none;
      transform: none !important;
    }
    .newsletter-grid {
      display: grid;
      grid-template-columns: 2fr 3fr;
      gap: 2.5rem;
      align-items: stretch;
    }
    .newsletter-img { margin-bottom: 1.5rem; }
    .newsletter-img img {
      padding: 0 !important;
      filter: drop-shadow(0 0 20px rgba(139,92,246,.15))
             drop-shadow(0 0 40px rgba(0,173,255,.1));
      animation: envelope-glow 3s ease-in-out infinite;
    }
    @keyframes envelope-glow {
      0%, 100% { filter: drop-shadow(0 0 20px rgba(139,92,246,.15))
                          drop-shadow(0 0 40px rgba(0,173,255,.1)); }
      50%      { filter: drop-shadow(0 0 30px rgba(139,92,246,.25))
                          drop-shadow(0 0 50px rgba(0,173,255,.2)); }
    }

    /* ========================================
       21. Responsive (§10)
       ======================================== */
    @media (min-width: 1200px) {
      .px-6 { padding-left: 2.5rem; padding-right: 2.5rem; }
    }
    @media (max-width: 900px) {
      .product-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .text-5xl { font-size: 2.25rem; line-height: 2.5rem; }
      .text-4xl { font-size: 1.875rem; line-height: 2.25rem; }
      .text-3xl { font-size: 1.5rem; line-height: 2rem; }

      .contact-cards-grid { grid-template-columns: 1fr !important; }
      .two-col-grid { grid-template-columns: 1fr; }
      .newsletter-grid { grid-template-columns: 1fr; text-align: center; }
      .newsletter-img { margin: 0 auto 1rem; }
      .newsletter-img img { max-width: 160px !important; }
    }
    @media (max-width: 500px) {
      .product-grid { grid-template-columns: 1fr; }
    }

    /* ========================================
       21. Links
       ======================================== */
    a { color: inherit; }