@font-face { font-family: 'Fraunces'; font-style: normal; font-weight: 600; font-display: swap; src: url(fonts/fr_600.woff2) format('woff2'); }
  @font-face { font-family: 'Fraunces'; font-style: normal; font-weight: 800; font-display: swap; src: url(fonts/fr_800.woff2) format('woff2'); }
  @font-face { font-family: 'Fraunces'; font-style: normal; font-weight: 900; font-display: swap; src: url(fonts/fr_900.woff2) format('woff2'); }
  @font-face { font-family: 'Fraunces'; font-style: italic; font-weight: 500; font-display: swap; src: url(fonts/fr_500i.woff2) format('woff2'); }
  @font-face { font-family: 'Public Sans'; font-style: normal; font-weight: 400; font-display: swap; src: url(fonts/ps_400.woff2) format('woff2'); }
  @font-face { font-family: 'Public Sans'; font-style: normal; font-weight: 500; font-display: swap; src: url(fonts/ps_500.woff2) format('woff2'); }
  @font-face { font-family: 'Public Sans'; font-style: normal; font-weight: 600; font-display: swap; src: url(fonts/ps_600.woff2) format('woff2'); }
  @font-face { font-family: 'Public Sans'; font-style: normal; font-weight: 700; font-display: swap; src: url(fonts/ps_700.woff2) format('woff2'); }

  :root {
    --ink: #130B20;
    --ink-raised: #1B1230;
    --paper: #F6F4FB;
    --paper-raised: #FFFFFF;
    --violet: #6D28D9;
    --violet-bright: #8B5CF6;
    --violet-deep: #3B1E73;
    --ember: #E85D1F;
    --ember-bright: #F2803F;
    --line-dark: rgba(196, 181, 253, 0.16);
    --line-light: rgba(109, 40, 217, 0.14);
    --text-dark: #ECE7F7;
    --text-dark-soft: #B4A8D1;
    --text-light: #211730;
    --text-light-soft: #6C6180;
    --bg: var(--paper);
    --bg-raised: var(--paper-raised);
    --fg: var(--text-light);
    --fg-soft: var(--text-light-soft);
    --line: var(--line-light);
    --accent: var(--violet);
    --accent-bright: var(--violet-bright);
  }

  @media (prefers-color-scheme: dark) {
    :root {
      --bg: var(--ink);
      --bg-raised: var(--ink-raised);
      --fg: var(--text-dark);
      --fg-soft: var(--text-dark-soft);
      --line: var(--line-dark);
    }
  }
  :root[data-theme="dark"] {
    --bg: var(--ink);
    --bg-raised: var(--ink-raised);
    --fg: var(--text-dark);
    --fg-soft: var(--text-dark-soft);
    --line: var(--line-dark);
  }
  :root[data-theme="light"] {
    --bg: var(--paper);
    --bg-raised: var(--paper-raised);
    --fg: var(--text-light);
    --fg-soft: var(--text-light-soft);
    --line: var(--line-light);
  }

  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; }
  body {
    background: var(--bg);
    color: var(--fg);
    font-family: 'Public Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  ::selection { background: var(--accent); color: #fff; }

  a { color: inherit; }
  img { max-width: 100%; display: block; }

  .wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; }

  h1, h2, h3 {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 800;
    text-wrap: balance;
    margin: 0;
    letter-spacing: -0.01em;
  }
  em { font-family: 'Fraunces', Georgia, serif; font-style: italic; font-weight: 500; color: var(--accent-bright); }

  .eyebrow {
    font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
  }

  p { max-width: 62ch; }
  .lede { font-size: 1.15rem; color: var(--fg-soft); max-width: 54ch; }

  /* ---------- NAV ---------- */
  header.nav {
    position: sticky; top: 0; z-index: 40;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
  }
  .nav-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 0;
  }
  .brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
  .brand img { height: 30px; width: auto; }
  .brand-name { font-family: 'Fraunces', serif; font-weight: 700; font-size: 1.05rem; letter-spacing: -0.01em; }
  .brand-tag {
    font-family: ui-monospace, monospace; font-size: 0.6rem; letter-spacing: 0.14em;
    text-transform: uppercase; color: var(--fg-soft); display: block; margin-top: -2px;
  }
  nav.links { display: flex; gap: 28px; align-items: center; }
  nav.links a {
    text-decoration: none; font-size: 0.92rem; color: var(--fg-soft); font-weight: 500;
    transition: color .15s ease;
  }
  nav.links a:hover, nav.links a:focus-visible { color: var(--fg); }
  .theme-toggle {
    border: 1px solid var(--line); background: none; color: var(--fg-soft);
    border-radius: 999px; width: 34px; height: 34px; cursor: pointer;
    display: flex; align-items: center; justify-content: center; font-size: 0.95rem;
  }
  .theme-toggle:focus-visible, a:focus-visible, button:focus-visible {
    outline: 2px solid var(--accent-bright); outline-offset: 2px;
  }

  .btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 22px; border-radius: 999px; font-weight: 600; font-size: 0.94rem;
    text-decoration: none; border: 1px solid transparent; cursor: pointer;
    transition: transform .15s ease, box-shadow .15s ease;
  }
  .btn-primary {
    background: linear-gradient(135deg, var(--violet) 0%, var(--violet-deep) 100%);
    color: #fff; box-shadow: 0 8px 24px -8px rgba(109,40,217,0.55);
  }
  .btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 28px -8px rgba(109,40,217,0.65); }
  .btn-ghost { border-color: var(--line); color: var(--fg); background: transparent; }
  .btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
  .btn-ember { background: var(--ember); color: #fff; box-shadow: 0 8px 20px -8px rgba(232,93,31,0.5); }
  .btn-ember:hover { transform: translateY(-1px); background: var(--ember-bright); }

  /* ---------- HERO ---------- */
  .hero {
    padding: 76px 0 40px;
    display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center;
  }
  .hero h1 { font-size: clamp(2.4rem, 4.6vw, 3.6rem); line-height: 1.06; margin: 14px 0 20px; }
  .hero-actions { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
  .hero-meta {
    display: flex; gap: 22px; margin-top: 38px; flex-wrap: wrap;
  }
  .hero-meta div { font-size: 0.82rem; color: var(--fg-soft); max-width: 20ch; }
  .hero-meta strong { display: block; color: var(--fg); font-family: 'Fraunces', serif; font-size: 1.5rem; font-weight: 700; }

  .growth-stage {
    position: relative; border-radius: 20px; border: 1px solid var(--line);
    background: var(--bg-raised);
    padding: 18px;
  }
  canvas#growth { width: 100%; height: 380px; display: block; border-radius: 12px; }
  .growth-caption {
    font-family: ui-monospace, monospace; font-size: 0.7rem; letter-spacing: 0.08em;
    color: var(--fg-soft); text-align: center; margin-top: 10px; text-transform: uppercase;
  }

  /* ---------- TRUNK / SECTIONS ---------- */
  section { padding: 88px 0; }
  .wrap.on-trunk {
    display: grid; grid-template-columns: 40px 1fr; gap: 0;
  }
  .trunk-rail { position: relative; }
  .trunk-rail::before {
    content: ""; position: absolute; left: 19px; top: 6px; bottom: -88px; width: 2px;
    background: linear-gradient(var(--accent), transparent 92%);
    opacity: 0.35;
  }
  #why .trunk-rail::before { bottom: 6px; }
  .trunk-node {
    width: 40px; height: 40px; border-radius: 999px;
    background: var(--bg-raised); border: 1px solid var(--line);
    display: flex; align-items: center; justify-content: center;
    font-family: ui-monospace, monospace; font-size: 0.85rem; font-weight: 700; color: var(--accent);
  }
  .section-head { margin-bottom: 40px; max-width: 62ch; }
  .section-head h2 { font-size: clamp(1.7rem, 2.8vw, 2.3rem); margin-top: 10px; }

  .stage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .stage-card {
    border: 1px solid var(--line); border-radius: 16px; padding: 22px; background: var(--bg-raised);
  }
  .stage-card .stage-label {
    font-family: ui-monospace, monospace; font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--fg-soft);
  }
  .stage-card h3 { font-size: 1.15rem; margin: 10px 0 8px; font-weight: 700; }
  .stage-card p { font-size: 0.92rem; color: var(--fg-soft); margin: 0; max-width: none; }

  .coverage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .coverage-card {
    border: 1px solid var(--line); border-radius: 14px; padding: 20px;
    background: var(--bg-raised);
  }
  .coverage-card h3 { font-size: 1.02rem; font-weight: 700; margin: 0 0 6px; font-family: 'Public Sans', sans-serif; }
  .coverage-card p { font-size: 0.87rem; color: var(--fg-soft); margin: 0; }
  .coverage-tag {
    font-family: ui-monospace, monospace; font-size: 0.64rem; letter-spacing: 0.06em;
    color: var(--accent); text-transform: uppercase; margin-bottom: 8px; display: block;
  }

  .why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 40px; }
  .why-item { display: flex; gap: 16px; }
  .why-num {
    font-family: 'Fraunces', serif; font-weight: 700; font-size: 1.6rem; color: var(--accent);
    min-width: 44px;
  }
  .why-item h3 { font-size: 1.08rem; margin: 0 0 6px; font-family: 'Public Sans', sans-serif; font-weight: 700; }
  .why-item p { font-size: 0.92rem; color: var(--fg-soft); margin: 0; }

  .diagram-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
  .diagram-card {
    border: 1px solid var(--line); border-radius: 16px; padding: 24px; background: var(--bg-raised);
  }
  .diagram-card h3 { font-family: 'Public Sans', sans-serif; font-size: 1.05rem; font-weight: 700; margin: 0 0 4px; }
  .diagram-card .diagram-sub { font-size: 0.85rem; color: var(--fg-soft); margin: 0 0 16px; }
  .diagram-scroll { overflow-x: auto; }
  .diagram-scroll svg { display: block; min-width: 340px; }
  .diag-box { fill: var(--bg-raised); stroke: var(--line); stroke-width: 1.5; }
  .diag-box-ai { fill: color-mix(in srgb, var(--violet) 14%, var(--bg-raised)); stroke: var(--violet); }
  .diag-box-ember { fill: color-mix(in srgb, var(--ember) 14%, var(--bg-raised)); stroke: var(--ember); }
  .diag-box-data { fill: color-mix(in srgb, #15803d 14%, var(--bg-raised)); stroke: #15803d; }
  .diag-label { fill: var(--fg); font: 700 15px 'Public Sans', sans-serif; }
  .diag-label-sm { fill: var(--fg); font: 700 13px 'Public Sans', sans-serif; }
  .diag-note { fill: var(--fg-soft); font: 13px 'Public Sans', sans-serif; }
  .diag-note-ai { fill: var(--violet-bright); font: 13px 'Public Sans', sans-serif; }
  .diag-arrow { stroke: var(--fg-soft); stroke-width: 2; fill: none; }
  .diag-arrow-dashed { stroke: var(--violet); stroke-width: 2; fill: none; stroke-dasharray: 5 4; }
  .diag-badge { fill: var(--violet); }
  .diag-badge-text { fill: #fff; font: 700 11px ui-monospace, monospace; }
  .diag-footer { fill: var(--fg); font: 600 14px 'Public Sans', sans-serif; }

  .cta-band {
    border-radius: 24px; padding: 56px; text-align: center;
    background: linear-gradient(150deg, var(--violet-deep), var(--ink));
    color: #fff;
  }
  :root[data-theme="light"] .cta-band, .cta-band { color: #F3EEFF; }
  .cta-band h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.2rem); }
  .cta-band p { color: #CBBCEF; margin: 14px auto 26px; }
  .cta-band .hero-actions { justify-content: center; }

  footer {
    border-top: 1px solid var(--line); padding: 44px 0 60px;
  }
  .footer-row {
    display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; flex-wrap: wrap;
  }
  .footer-brand { display: flex; gap: 12px; align-items: center; }
  .footer-brand img { height: 26px; }
  .footer-cols { display: flex; gap: 56px; flex-wrap: wrap; }
  .footer-col h4 {
    font-family: ui-monospace, monospace; font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--fg-soft); margin: 0 0 10px; font-weight: 600;
  }
  .footer-col a { display: block; font-size: 0.9rem; text-decoration: none; color: var(--fg); margin-bottom: 8px; }
  .footer-col a:hover { color: var(--accent); }
  .footer-legal { margin-top: 40px; font-size: 0.78rem; color: var(--fg-soft); }

  /* ---------- PRICING ---------- */
  .pricing-hero { padding: 64px 0 8px; max-width: 68ch; }
  .pricing-hero h1 { font-size: clamp(2rem, 3.6vw, 2.8rem); line-height: 1.1; margin: 14px 0 16px; }
  .pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
  .pricing-card {
    display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 16px;
    padding: 28px; background: var(--bg-raised);
  }
  .pricing-card.featured { border-color: var(--violet); box-shadow: 0 0 0 1px var(--violet); }
  .pricing-card .pricing-tag {
    font-family: ui-monospace, monospace; font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--accent); margin-bottom: 10px;
  }
  .pricing-card h3 { font-family: 'Fraunces', serif; font-size: 1.4rem; font-weight: 700; margin: 0 0 8px; }
  .pricing-card .pricing-scope { font-size: 0.9rem; color: var(--fg-soft); margin: 0 0 20px; }
  .pricing-features { list-style: none; margin: 0 0 24px; padding: 0; display: grid; gap: 10px; flex: 1; }
  .pricing-features li { font-size: 0.88rem; padding-left: 22px; position: relative; }
  .pricing-features li::before {
    content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700;
  }
  .pricing-card .btn { justify-content: center; }
  .pricing-faq { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 40px; }
  .pricing-faq .faq-item h3 { font-size: 1.02rem; margin: 0 0 6px; font-family: 'Public Sans', sans-serif; font-weight: 700; }
  .pricing-faq .faq-item p { font-size: 0.9rem; color: var(--fg-soft); margin: 0; }

  @media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; padding-top: 40px; }
    .stage-grid, .coverage-grid, .why-grid { grid-template-columns: 1fr 1fr; }
    .diagram-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .pricing-faq { grid-template-columns: 1fr; }
    .wrap.on-trunk { grid-template-columns: 1fr; }
    .trunk-rail { display: none; }
  }
  @media (max-width: 620px) {
    nav.links { display: none; }
    .stage-grid, .coverage-grid, .why-grid { grid-template-columns: 1fr; }
    .hero-meta { gap: 16px; }
    section { padding: 56px 0; }
    .cta-band { padding: 36px 22px; }
  }

  @media (prefers-reduced-motion: reduce) {
    * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  }