:root {
  --paper: #ffffff;
  --ink: #23262a;
  --accent: #1b615d;
  --muted: #59656b;
  --line: #d6dce0;
  --surface: #f1f3f5;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-optical-sizing: auto;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 32px; }
body { margin: 0; font-family: inherit; font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button, .button, .nav-cta { touch-action: manipulation; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
button:active, .button:active, .nav-cta:active { transform: scale(.97); }
p, h1, h2, h3, h4, figure { margin: 0; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; }
.wrap { width: min(1120px, calc(100% - 96px)); margin-inline: auto; }
.skip { position: absolute; top: 12px; left: 12px; z-index: 20; padding: 12px 20px; background: var(--paper); transform: translateY(-180%); }
.skip:focus { transform: translateY(0); }
.header { display: flex; justify-content: space-between; align-items: center; gap: 24px; min-height: 104px; }
.wordmark { display: inline-flex; align-items: center; min-height: 44px; font-size: 26px; font-weight: 650; letter-spacing: -1.4px; }
.header nav { display: flex; align-items: center; gap: 32px; }
.header nav a, .footer nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: 13px; font-weight: 550; }
.header nav a:not(.nav-cta):hover, .footer a:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 5px; }
.nav-cta { padding: 0 19px; border: 1px solid var(--line); border-radius: 30px; }
.nav-cta:hover { background: var(--surface); }
.hero { padding-block: 87px 100px; }
h1 { font-size: clamp(45px, 6.5vw, 88px); line-height: 1.055; letter-spacing: -.065em; font-weight: 620; }
h1 span { color: var(--accent); }
.hero-bottom { display: flex; justify-content: space-between; gap: 40px; align-items: end; margin-top: 38px; }
.intro { font-size: 23px; line-height: 1.4; font-weight: 450; letter-spacing: -.65px; }
.hero-detail { margin-top: 17px; font-size: 14px; color: var(--muted); }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 48px; padding: 12px 22px; border-radius: 28px; font-size: 14px; font-weight: 550; gap: 24px; }
.primary { background: var(--accent); color: #fff; }
.primary:hover { background: #164e4b; }
.section-heading { padding-block: 48px 45px; border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr 320px; gap: 64px; align-items: end; }
.eyebrow { font-size: 13px; font-weight: 550; color: var(--muted); margin-bottom: 20px; letter-spacing: .01em; }
h2 { font-size: clamp(32px, 3.65vw, 48px); font-weight: 580; line-height: 1.12; letter-spacing: -.045em; }
.section-description { max-width: 310px; color: var(--muted); font-size: 16px; line-height: 1.65; padding-bottom: 3px; }
.product-stage { background: var(--surface); padding-top: 24px; }
.stage-topline { display: flex; justify-content: space-between; gap: 20px; font-size: 11px; font-weight: 500; color: var(--muted); }
.brief { padding-top: 43px; text-align: center; }
.label { font-size: 11px; font-weight: 550; letter-spacing: .035em; color: var(--muted); }
.brief h3 { margin-top: 10px; font-size: 25px; line-height: 1.3; font-weight: 550; letter-spacing: -.65px; }
.brief > p:last-child { margin-top: 12px; color: var(--muted); font-size: 13px; }
.concepts { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; padding-top: 2px; padding-bottom: 54px; }
.concept { min-width: 0; }
.object-space { aspect-ratio: 1.4; display: grid; align-items: center; }
.notebook { width: 100%; height: auto; display: block; overflow: visible; }
.concept-b .notebook { transform: translateY(-3px); }
figcaption { display: flex; align-items: flex-start; gap: 16px; margin-inline: 28px; }
.concept-letter { display: grid; place-items: center; border: 1px solid #bdc5c9; width: 32px; height: 32px; flex: 0 0 32px; border-radius: 50%; font-size: 12px; font-weight: 550; margin-top: 1px; }
figcaption h4 { font-size: 19px; line-height: 1.3; letter-spacing: -.4px; font-weight: 550; }
figcaption p { font-size: 13px; margin-top: 7px; color: var(--muted); }
.evidence-band { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 26px; padding-top: 26px; padding-bottom: 27px; border-top: 1px solid var(--line); }
#demo.enhanced .evidence-band { display: block; min-height: 135px; margin-top: 0; }
#demo.enhanced .evidence-band > div { padding-block: 10px; }
#demo.enhanced .evidence-band::after { color: var(--muted); }
.signal-row .signal { border-top: 0; padding: 0; margin-top: 0; }
.site-links { color: var(--muted); }
.site-links a:hover { color: var(--accent); }
@media (prefers-reduced-motion: reduce) {
  #demo.enhanced .evidence-band { display: grid; min-height: 0; }
}
.evidence-band > div { min-width: 0; }
.evidence-band p { font-size: 15px; margin-top: 8px; letter-spacing: -.2px; line-height: 1.45; }
.evidence-band small { font-size: 11px; color: var(--muted); display: block; margin-top: 7px; }
.signal-row { border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 30px; min-height: 120px; padding-block: 24px; }
.signal { display: flex; gap: 14px; align-items: flex-start; min-width: 0; }
.signal-dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; flex: 0 0 6px; margin-top: 9px; }
.signal .label { color: var(--accent); font-size: 10px; letter-spacing: .055em; }
.signal p { font-size: 13px; color: var(--muted); max-width: 650px; margin-top: 5px; }
.demo-controls { display: flex; gap: 8px; flex-shrink: 0; }
.demo-controls button { min-height: 44px; min-width: 65px; padding: 9px 14px; background: transparent; color: var(--ink); border: 1px solid #c4ccd1; border-radius: 24px; font-size: 12px; cursor: pointer; }
.demo-controls button:hover { background: #e4e8eb; }
.demo-controls button:disabled { cursor: default; color: var(--muted); }
.journey-wrap { padding-top: 30px; padding-bottom: 64px; }
.journey-caption { color: var(--muted); font-size: 12px; margin-bottom: 24px; }
.journey { list-style: none; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 24px; margin: 0; padding: 0; }
.journey li { min-width: 0; border-top: 1px solid var(--line); padding-top: 15px; }
.journey li.active { border-top-color: var(--accent); }
.journey li > span { display: block; font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; margin-bottom: 13px; }
.journey strong { font-size: 13px; font-weight: 550; display: block; }
.journey p { font-size: 12px; color: var(--muted); margin-top: 6px; }
.promise { padding-block: 69px 88px; border-top: 1px solid var(--line); }
.promise h2 { max-width: 790px; font-size: clamp(34px, 4.1vw, 54px); }
.promise > p:not(.eyebrow) { max-width: 610px; margin-top: 24px; color: var(--muted); font-size: 16px; }
.promise > p.small { font-size: 12px; margin-top: 16px; }
.registration { border-top: 1px solid var(--line); padding-block: 72px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 80px; }
.form-intro p { color: var(--muted); margin-top: 20px; max-width: 440px; }
.form-intro .eyebrow { margin-top: 0; }
.form-intro .small { font-size: 12px; }
.registration form, .registration fieldset { min-width: 0; }
.registration textarea, .registration input, .registration select { max-width: 100%; font-size: 16px; }
.manage { border-top: 1px solid var(--line); padding-block: 36px; }
.footer { display: flex; align-items: center; justify-content: space-between; gap: 32px; border-top: 1px solid var(--line); padding-block: 26px; color: var(--muted); }
.footer p { font-size: 12px; max-width: 360px; }
.footer nav { display: flex; gap: 24px; flex-wrap: wrap; }
.footer nav a { font-size: 12px; }
@media (min-width: 1500px) { .hero { padding-top: 110px; } }
@media (max-width: 1000px) {
  .wrap { width: calc(100% - 64px); }
  .header nav { gap: 22px; }
  .hero { padding-block: 62px 76px; }
  .section-heading { grid-template-columns: minmax(0, 1fr) minmax(0, .75fr); gap: 40px; }
  .concepts { gap: 10px; }
  figcaption { margin-inline: 10px; }
  .journey { gap: 16px; }
  .registration { gap: 40px; }
}
@media (max-width: 700px) {
  .wrap { width: calc(100% - 40px); }
  .header { min-height: 120px; flex-wrap: wrap; align-content: center; gap: 5px 20px; padding-block: 14px; }
  .wordmark { font-size: 24px; }
  .header nav { width: 100%; justify-content: space-between; gap: 12px; }
  .header nav a { font-size: 12px; }
  .nav-cta { padding-inline: 13px; }
  .hero { padding-block: 48px 62px; }
  h1 { font-size: clamp(36px, 7.55vw, 53px); letter-spacing: -.058em; line-height: 1.08; }
  .hero-bottom { align-items: flex-start; flex-direction: column; gap: 27px; margin-top: 28px; }
  .intro { font-size: 20px; letter-spacing: -.4px; }
  .hero-detail { font-size: 12px; margin-top: 16px; }
  .section-heading { display: block; padding-block: 34px; }
  .eyebrow { margin-bottom: 16px; }
  .section-description { margin-top: 22px; max-width: 350px; font-size: 14px; }
  .stage-topline { font-size: 10px; gap: 12px; }
  .stage-topline span:last-child { text-align: right; max-width: 125px; }
  .brief { padding-top: 36px; text-align: left; }
  .brief h3 { font-size: 22px; letter-spacing: -.5px; }
  .brief > p:last-child { font-size: 12px; }
  .concepts { grid-template-columns: minmax(0, 1fr); padding-top: 12px; gap: 12px; padding-bottom: 37px; }
  .object-space { aspect-ratio: 1.5; }
  .notebook { max-width: 500px; margin-inline: auto; }
  figcaption { margin-inline: 0; gap: 13px; }
  figcaption h4 { font-size: 18px; }
  figcaption p { font-size: 12px; margin-top: 4px; }
  .concept-b { margin-top: 12px; }
  .concept-b .object-space { aspect-ratio: 1.35; }
  .evidence-band { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 25px 22px; }
  .evidence-band p { font-size: 13px; }
  .evidence-band .label { font-size: 10px; }
  .signal-row { align-items: flex-start; flex-direction: column; gap: 18px; padding-block: 24px; }
  .signal p { font-size: 12px; }
  .journey-wrap { padding-bottom: 44px; }
  .journey { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .journey li { display: grid; grid-template-columns: 25px minmax(0, 1fr); gap: 0 12px; padding-block: 15px; }
  .journey li > span { margin: 2px 0 0; grid-row: span 2; }
  .journey p { margin-top: 3px; }
  .journey-caption { margin-bottom: 16px; }
  .promise { padding-block: 45px 52px; }
  .promise h2 { font-size: 35px; }
  .promise > p:not(.eyebrow) { font-size: 14px; margin-top: 20px; }
  .promise > p.small { font-size: 12px; }
  .registration { grid-template-columns: minmax(0, 1fr); padding-block: 48px; gap: 32px; }
  .footer { display: block; padding-block: 25px; }
  .footer nav { gap: 24px; margin-top: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}