: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 (Cross-Page Spec §8.1) */
      --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 & BASE (Cross-Page Spec §0.4)
       ======================================== */
    *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
    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;
    }
    img { max-width: 100%; height: auto; }
    a { text-decoration: none; }

    /* ========================================
       2. UTILITY CLASSES (Cross-Page Spec §0.1–0.3)
       ======================================== */
    .text-5xl { font-size: 3rem; line-height: 1.1; }
    .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: 0.875rem; 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); }
    .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; }
    .py-16{ padding-top: 4rem; padding-bottom: 4rem; }
    .py-20{ padding-top: 5rem; padding-bottom: 5rem; }
    .pt-32{ padding-top: 8rem; }
    .pb-16{ padding-bottom: 4rem; }
    .px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
    .max-w-7xl { max-width: 80rem; }
    .mx-auto { margin-left: auto; margin-right: auto; }
    .relative { position: relative; }
    .z-10 { z-index: 10; }
    .text-center { text-align: center; }
    .leading-relaxed { line-height: 1.625; }
    .transition-colors { transition: color 0.3s; }

    /* ========================================
       3. GRADIENT TEXT (Cross-Page Spec §2)
       ======================================== */
    .grad-text {
      color: #8b5cf6; /* 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 (Cross-Page Spec §9)
       ======================================== */
    .sr-only {
      position: absolute; width: 1px; height: 1px; padding: 0;
      margin: -1px; overflow: hidden; clip: rect(0,0,0,0);
      white-space: nowrap; border: 0;
    }
    a:focus-visible, button:focus-visible, input:focus-visible,
    select:focus-visible, textarea:focus-visible {
      outline: 2px solid #8b5cf6;
      outline-offset: 2px;
      border-radius: 4px;
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
      }
    }

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

    /* ========================================
       6. GLASSMORPHIC CARD (System of Record §5.2)
       ======================================== */
    .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--no-hover {}
    .glass:not(.glass--no-hover):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:not(.glass--no-hover):hover::before { opacity: 1; }
    .glass > .glass__inner { position: relative; z-index: 1; }

    /* Light Glass variant (Feature Card spec) */
    .glass-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;
      position: relative;
      overflow: hidden;
      transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-light .card-glow {
      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-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);
    }
    .glass-light:hover .card-glow { opacity: 1; }
    .glass-light > .card-inner { position: relative; z-index: 1; }

    /* ========================================
       7. BUTTONS (Cross-Page Spec §0.10, System of Record §5.1)
       ======================================== */
    .btn-primary {
      position: relative;
      overflow: hidden;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 24px;
      border-radius: 8px;
      background: rgba(139,92,246,0.8);
      color: var(--white);
      border: 1px solid rgba(139,92,246,0.5);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      box-shadow: 0 4px 16px rgba(0,0,0,0.2);
      font-family: var(--bf);
      font-size: 0.875rem;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.3s;
      text-decoration: none;
      line-height: 1.25rem;
    }
    .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 .btn-arrow { transition: transform 0.3s; }
    .btn-primary:hover .btn-arrow { transform: translateX(4px); }

    /* Secondary button (Cross-Page Spec §0.10) */
    .btn-secondary {
      position: relative;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 24px;
      border-radius: 8px;
      background: rgba(255,255,255,0.05);
      color: var(--white);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      font-family: var(--bf);
      font-size: 0.875rem;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.3s;
      text-decoration: none;
      overflow: visible;
      border: none;
      line-height: 1.25rem;
    }
    .btn-secondary:hover {
      background: rgba(255,255,255,0.1);
      transform: translateY(-2px);
    }
    .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;
    }
    .btn-secondary .border-svg rect {
      stroke-dasharray: 1000;
      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 .btn-text,
    .btn-secondary .btn-arrow { position: relative; z-index: 1; }
    .btn-secondary .btn-arrow { transition: transform 0.3s; }
    .btn-secondary:hover .btn-arrow { transform: translateX(4px); }

    /* ========================================
       8. HERO SECTION
       ======================================== */
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }

    /* ========================================
       9. ICON CONTAINERS (Cross-Page Spec §3.2)
       ======================================== */
    .icon-feature-container {
      width: 3rem; height: 3rem;
      border-radius: 0.5rem;
      background: linear-gradient(135deg, rgba(139,92,246,0.2), rgba(0,173,255,0.2));
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
    }
    /* CSS mask gradient for SVG icons (Cross-Page Spec §3.1) */
    .icon-mask {
      width: 2rem; height: 2rem;
      background: linear-gradient(135deg, #8b5cf6, #00adff, #00d9c0);
      -webkit-mask-size: contain;
      -webkit-mask-repeat: no-repeat;
      -webkit-mask-position: center;
      mask-size: contain;
      mask-repeat: no-repeat;
      mask-position: center;
    }

    /* ========================================
       10. FEATURE ITEMS
       ======================================== */
    .feature-item {
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }
    .feature-item h3 {
      font-family: var(--sf);
      color: var(--white);
      font-weight: 600;
      font-size: 1rem;
      line-height: 1.5rem;
      margin-bottom: 4px;
    }
    .feature-item p {
      color: var(--gray-300);
      font-size: 0.875rem;
      line-height: 1.5;
    }

    /* ========================================
       11. CHECK LIST ITEMS (hero)
       ======================================== */
    .check-item {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 8px;
    }
    .check-icon {
      width: 22px; height: 22px; border-radius: 50%;
      background: linear-gradient(135deg, rgba(139,92,246,0.3), rgba(0,173,255,0.3));
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
    }
    .check-item span {
      color: var(--gray-300);
      font-size: 0.875rem;
    }

    /* ========================================
       12b. COVER IMAGE + NEURAL PULSE RINGS
       ======================================== */
    .cover-pulse-area {
      position: relative;
      width: 100%;
      display: flex;
      justify-content: center;
      align-items: center;
      margin-bottom: 1.5rem;
      padding: 2.5rem 0;
    }
    .pulse-ring {
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      border-radius: 50%;
      border: 1px solid transparent;
      pointer-events: none;
    }
    .pulse-ring--1 {
      width: 280px; height: 280px;
      border-color: rgba(139,92,246,0.2);
      animation: pulse-breathe 4s ease-in-out infinite;
    }
    .pulse-ring--2 {
      width: 380px; height: 380px;
      border-color: rgba(0,173,255,0.12);
      animation: pulse-breathe 4s ease-in-out infinite -1.3s;
    }
    .pulse-ring--3 {
      width: 480px; height: 480px;
      border-color: rgba(0,217,192,0.07);
      animation: pulse-breathe 4s ease-in-out infinite -2.6s;
    }
    @keyframes pulse-breathe {
      0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
      50% { transform: translate(-50%, -50%) scale(1.06); opacity: 0.5; }
    }
    .cover-img-wrap {
      position: relative;
      display: inline-block;
      max-width: 240px;
      width: 100%;
      z-index: 2;
    }
    .cover-img-glow {
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      width: 130%; height: 130%;
      background: radial-gradient(ellipse at center,
        rgba(139,92,246,0.35) 0%,
        rgba(0,173,255,0.2) 35%,
        rgba(0,217,192,0.08) 55%,
        transparent 70%);
      filter: blur(20px);
      animation: cover-glow 4s ease-in-out infinite;
    }
    @keyframes cover-glow {
      0%, 100% { opacity: 0.8; transform: translate(-50%, -50%) scale(1); }
      50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
    }
    .cover-img {
      position: relative;
      z-index: 1;
      width: 100%;
      border-radius: 10px;
      filter: drop-shadow(0 8px 24px rgba(0,0,0,0.4));
    }

    /* ========================================
       13. CLIENT LOGOS
       ======================================== */
    .logo-bar {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 3rem;
      flex-wrap: wrap;
    }
    .logo-bar img {
      height: 64px;
      opacity: 0.8;
      transition: opacity 0.3s;
    }
    .logo-bar img:hover { opacity: 1; }

    /* ========================================
       14. FORM CARD
       ======================================== */
    .form-card-heading {
      font-family: var(--sf);
      color: var(--white);
      font-size: 1.5rem;
      line-height: 2rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }
    .form-card-sub {
      color: var(--gray-300);
      font-size: 0.875rem;
      line-height: 1.25rem;
      margin-bottom: 1.5rem;
    }
    .form-chevrons {
      animation: chevron-bounce 1.8s ease-in-out infinite;
    }
    @keyframes chevron-bounce {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(4px); }
    }

    /* ========================================
       15. RESPONSIVE (Cross-Page Spec §10)
       ======================================== */
    @media (min-width: 1200px) {
      .px-6 { padding-left: 2.5rem; padding-right: 2.5rem; }
    }
    @media (max-width: 900px) {
      .hero-grid {
        grid-template-columns: 1fr !important;
      }
      .pulse-ring--1 { width: 220px; height: 220px; }
      .pulse-ring--2 { width: 300px; height: 300px; }
      .pulse-ring--3 { width: 380px; height: 380px; }
      .cover-pulse-area { padding: 1.5rem 0; }
      .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; }
    }
    @media (max-width: 768px) {
      .logo-bar { gap: 2rem; }
      .logo-bar img { height: 48px; }
    }
    @media (max-width: 500px) {
      .logo-bar img { height: 36px; }
      .logo-bar { gap: 1.5rem; }
      .pulse-ring--1 { width: 180px; height: 180px; }
      .pulse-ring--2 { width: 240px; height: 240px; }
      .pulse-ring--3 { width: 300px; height: 300px; }
      .cover-pulse-area { padding: 1rem 0; overflow: hidden; }
      .cover-img-wrap { max-width: 180px; }
    }