:root {
      --bg-main: #090714;
      --bg-surface: #130f26;
      --primary-accent: #6366f1;
      --highlight-accent: #8b5cf6;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --card-bg: rgba(255, 255, 255, 0.03);
      --card-border: 1px solid rgba(255, 255, 255, 0.08);
      --font-heading: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
      --font-body: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.7;
      overflow-x: hidden;
    }

    body {
      width: 100%;
      overflow-x: hidden;
    }

    /* Layout Container */
    .site-container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* Page Marker - Hidden from layout but present in DOM */
    .page-marker {
      display: none;
    }

    /* Low-Profile Header / Nav */
    header {
      background: rgba(9, 7, 20, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: var(--card-border);
      position: sticky;
      top: 0;
      z-index: 100;
      padding: 1rem 0;
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .brand-logo {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1.25rem;
      color: var(--text-main);
      text-decoration: none;
      letter-spacing: -0.02em;
    }

    .brand-logo span {
      background: linear-gradient(135deg, var(--primary-accent), var(--highlight-accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 1.5rem;
      list-style: none;
    }

    .nav-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.9rem;
      font-weight: 500;
      transition: color 0.2s ease;
    }

    .nav-links a:hover {
      color: var(--text-main);
    }

    .nav-cta {
      background: linear-gradient(135deg, var(--primary-accent), var(--highlight-accent));
      color: #ffffff !important;
      padding: 0.5rem 1rem;
      border-radius: 6px;
      font-weight: 700 !important;
    }

    /* Hero Section Architecture */
    .hero-section {
      padding: 4rem 0 3rem 0;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }

    .hero-eyebrow {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--highlight-accent);
      margin-bottom: 1rem;
      padding: 0.35rem 0.75rem;
      background: rgba(139, 92, 246, 0.1);
      border: 1px solid rgba(139, 92, 246, 0.2);
      border-radius: 4px;
    }

    h1 {
      font-family: var(--font-heading);
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -0.03em;
      margin-bottom: 1.25rem;
      background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-intro {
      font-size: 1.125rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
    }

    .hero-visual-wrapper {
      position: relative;
      width: 100%;
      border-radius: 12px;
      overflow: hidden;
      border: var(--card-border);
      background: var(--card-bg);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }

    .hero-visual-wrapper img {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
    }

    .hero-bullets {
      list-style: none;
      margin-bottom: 2rem;
    }

    .hero-bullets li {
      position: relative;
      padding-left: 1.75rem;
      margin-bottom: 0.75rem;
      color: var(--text-main);
      font-size: 0.95rem;
    }

    .hero-bullets li::before {
      content: "—";
      position: absolute;
      left: 0;
      color: var(--primary-accent);
      font-weight: 700;
    }

    .cta-button {
      display: inline-block;
      width: 100%;
      text-align: center;
      background: linear-gradient(135deg, var(--primary-accent) 0%, var(--highlight-accent) 100%);
      color: #ffffff;
      text-decoration: none;
      font-family: var(--font-heading);
      font-size: 1.125rem;
      font-weight: 800;
      letter-spacing: 0.02em;
      padding: 1.125rem 2rem;
      border-radius: 6px;
      box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      margin-bottom: 0.875rem;
    }

    .cta-button:hover {
      transform: translateY(-2px);
      box-shadow: 0 15px 30px rgba(99, 102, 241, 0.4);
    }

    .trust-microcopy {
      font-size: 0.85rem;
      color: var(--text-muted);
      text-align: center;
      margin-bottom: 1.5rem;
    }

    /* Content Section Modules */
    .content-section {
      padding: 3.5rem 0;
      border-top: var(--card-border);
    }

    .section-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }

    .section-grid.full-width {
      grid-template-columns: 1fr;
    }

    h2 {
      font-family: var(--font-heading);
      font-size: 1.85rem;
      font-weight: 700;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 1.25rem;
      letter-spacing: -0.02em;
    }

    p {
      color: var(--text-muted);
      margin-bottom: 1.25rem;
      font-size: 1rem;
    }

    .card-panel {
      background: var(--card-bg);
      border: var(--card-border);
      border-radius: 12px;
      padding: 2rem;
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
    }

    .section-visual {
      border-radius: 12px;
      overflow: hidden;
      border: var(--card-border);
    }

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

    /* Commerce Pack Box */
    .offer-card {
      background: rgba(19, 15, 38, 0.6);
      border: 1px solid rgba(139, 92, 246, 0.3);
      border-radius: 12px;
      padding: 2.5rem;
      text-align: center;
      max-width: 600px;
      margin: 2rem auto;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    }

    .offer-badge {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--text-main);
      background: var(--primary-accent);
      padding: 0.25rem 0.75rem;
      border-radius: 4px;
      margin-bottom: 1rem;
    }

    .offer-price {
      font-family: var(--font-heading);
      font-size: 3.5rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 0.5rem;
      line-height: 1;
    }

    .offer-terms {
      color: var(--text-muted);
      font-size: 0.95rem;
      margin-bottom: 1.5rem;
    }

    /* Checklist Grid */
    .checklist-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.5rem;
      margin-top: 1.5rem;
    }

    .checklist-item {
      background: var(--card-bg);
      border: var(--card-border);
      border-radius: 8px;
      padding: 1.25rem;
    }

    .checklist-item h3 {
      font-family: var(--font-heading);
      font-size: 1.1rem;
      color: var(--highlight-accent);
      margin-bottom: 0.5rem;
    }

    /* FAQ Section */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
      margin-top: 2rem;
    }

    .faq-item {
      background: var(--card-bg);
      border: var(--card-border);
      border-radius: 8px;
      padding: 1.5rem;
    }

    .faq-question {
      font-family: var(--font-heading);
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }

    .faq-answer {
      color: var(--text-muted);
      font-size: 0.95rem;
      margin-bottom: 0;
    }

    /* Disclaimers & Footer */
    .disclaimer-box {
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: 8px;
      padding: 1.5rem;
      font-size: 0.85rem;
      color: #64748b;
      margin-top: 3rem;
    }

    footer {
      border-top: var(--card-border);
      padding: 3rem 0;
      margin-top: 4rem;
      text-align: center;
    }

    .footer-links {
      display: flex;
      justify-content: center;
      gap: 2rem;
      list-style: none;
      margin-bottom: 1.5rem;
    }

    .footer-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.9rem;
    }

    .footer-links a:hover {
      color: var(--text-main);
    }

    .footer-copy {
      color: #64748b;
      font-size: 0.85rem;
    }

    /* Strict Mobile View (390px DOM/Render Order Constraint) */
    @media (max-width: 768px) {
      .hero-grid, .section-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }

      h1 { font-size: 2rem; }
      h2 { font-size: 1.5rem; }

      /* Mobile sequence enforcement for Hero */
      .hero-grid {
        display: flex;
        flex-direction: column;
      }

      .mob-order-1 { order: 1; }
      .mob-order-2 { order: 2; }
      .mob-order-3 { order: 3; }
      .mob-order-4 { order: 4; }
      .mob-order-5 { order: 5; }
      .mob-order-6 { order: 6; }

      /* Keep the first mobile order action after the hero product visual. */
      .nav-cta { display: none !important; }
    }