@font-face { font-family: "Figtree"; font-style: normal; font-weight: 300 900; font-display: swap; src: url("/branding/fonts/figtree/Figtree-VariableFont_wght.woff2") format("woff2"); }
@font-face { font-family: "Figtree"; font-style: italic; font-weight: 300 900; font-display: swap; src: url("/branding/fonts/figtree/Figtree-Italic-VariableFont_wght.woff2") format("woff2"); }

@font-face { font-family: "EB Garamond"; font-style: normal; font-weight: 400 800; font-display: swap; src: url("/branding/fonts/eb-garamond/EBGaramond-VariableFont_wght.woff2") format("woff2"); }
@font-face { font-family: "EB Garamond"; font-style: italic; font-weight: 400 800; font-display: swap; src: url("/branding/fonts/eb-garamond/EBGaramond-Italic-VariableFont_wght.woff2") format("woff2"); }

:root {
  --page-max-width: 1200px;
  --ref-navy: #16202d;
  --ref-sepia: #feebdb;
  --ref-gold: #cac1a8;
  --ref-white: #fff;
  --ref-warm-ink: #4a453d;
  --ref-logo-navy: #00163d;
  --ref-shadow-ink: #080d14;
  --surface: var(--ref-sepia);
  --text: var(--ref-navy);
  --muted: var(--ref-warm-ink);
  --panel: color-mix(in oklab, var(--ref-sepia) 68%, var(--ref-white));
  --card: color-mix(in oklab, var(--ref-sepia) 84%, var(--ref-white));
  --line: color-mix(in oklab, var(--ref-sepia) 75%, var(--ref-warm-ink));
  --control-line: color-mix(in oklab, var(--ref-sepia) 40%, var(--ref-warm-ink));
  --gold-ink: color-mix(in oklab, var(--ref-gold) 20%, var(--ref-warm-ink));
  --upper-light: color-mix(in oklab, var(--ref-sepia) 68%, var(--ref-white));
  --shadow: color-mix(in oklab, var(--ref-warm-ink) 8%, transparent);
  --image-shadow-near: color-mix(in oklab, var(--ref-warm-ink) 12%, transparent);
  --image-shadow-far: color-mix(in oklab, var(--ref-warm-ink) 5%, transparent);
  --aura-core: color-mix(in oklab, var(--surface) 80%, var(--ref-white));
  --aura-fringe: color-mix(in oklab, var(--surface) 98%, var(--ref-gold));
  --grid-line: color-mix(in oklab, var(--muted) 12%, transparent);
  --header-surface: color-mix(in oklab, var(--ref-sepia) 77%, var(--ref-white));
  --header-edge: color-mix(in oklab, var(--line) 22%, transparent);
  --header-shadow-near: color-mix(in oklab, var(--ref-warm-ink) 10%, transparent);
  --header-shadow-far: color-mix(in oklab, var(--ref-warm-ink) 7%, transparent);
  color-scheme: light;
}

:root[data-theme="navy"] { color-scheme: dark; }
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  background: var(--surface);
}

body {
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  margin: 0;
  min-width: 280px;
  min-height: 100vh;
  /* Continue the lighting through wide margins, anchored to the content's left edge. */
  background: radial-gradient(ellipse at max(0px, calc((100% - var(--page-max-width)) / 2)) 0, var(--upper-light), transparent 56%), var(--surface);
  color: var(--text);
  font-family: "Figtree", system-ui, sans-serif;
}

button, a { font: inherit; }
button { color: inherit; }
img { max-width: 100%; }

.page-frame {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--page-max-width);
  min-height: 100vh;
  margin-inline: auto;
  container-type: inline-size;
}

.site-shell {
  --unit: calc(100cqw / 740);
  width: 100%;
  min-height: 100vh;
  isolation: isolate;
  color: var(--text);
  font-size: max(12px, calc(14 * var(--unit)));
  line-height: 1.5;
}

:root[data-theme="navy"] {
  --surface: var(--ref-navy);
  --text: var(--ref-sepia);
  --muted: color-mix(in oklab, var(--ref-sepia) 76%, var(--ref-navy));
  --panel: color-mix(in oklab, var(--ref-navy) 93%, var(--ref-sepia));
  --card: color-mix(in oklab, var(--ref-navy) 97%, var(--ref-sepia));
  --line: color-mix(in oklab, var(--ref-navy) 79%, var(--ref-sepia));
  --control-line: color-mix(in oklab, var(--ref-navy) 50%, var(--ref-sepia));
  --gold-ink: var(--ref-gold);
  --upper-light: color-mix(in oklab, var(--ref-navy) 93%, var(--ref-sepia));
  --shadow: color-mix(in oklab, var(--ref-logo-navy) 28%, transparent);
  --image-shadow-near: color-mix(in oklab, var(--ref-shadow-ink) 35%, transparent);
  --image-shadow-far: color-mix(in oklab, var(--ref-shadow-ink) 18%, transparent);
  --aura-core: color-mix(in oklab, var(--surface) 92%, var(--ref-gold));
  --header-surface: color-mix(in oklab, var(--ref-navy) 94%, var(--ref-sepia));
  --header-shadow-near: color-mix(in oklab, var(--ref-shadow-ink) 22%, transparent);
  --header-shadow-far: color-mix(in oklab, var(--ref-shadow-ink) 18%, transparent);
}

.site-header {
  display: flex;
  align-items: center;
  gap: calc(24 * var(--unit));
  padding: calc(6 * var(--unit)) calc(36 * var(--unit)) calc(6 * var(--unit)) calc(32 * var(--unit));
  position: relative;
  z-index: 2;
}

.site-header::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset-block: 0;
  left: calc(50% - 50vw);
  width: 100vw;
  background: var(--header-surface);
  border-bottom: 1px solid var(--header-edge);
  box-shadow: 0 1px 2px var(--header-shadow-near), 0 5px 12px -6px var(--header-shadow-far);
  pointer-events: none;
}

.brand {
  display: flex;
  align-items: center;
  min-height: calc(44 * var(--unit));
  flex: none;
  gap: calc(11 * var(--unit));
  color: var(--text);
  text-decoration: none;
}

.brand-symbol {
  display: block;
  position: relative;
  width: calc(64 * var(--unit));
  height: calc(44 * var(--unit));
  flex: none;
}

.brand-symbol img { display: block; width: 100%; height: 100%; object-fit: contain; }
.brand-symbol img.brand-symbol-navy { display: none; position: absolute; width: 94.5946%; height: auto; left: 50%; top: 50%; transform: translate(-50%, -50.67%); }
[data-theme="navy"] .brand-symbol-sepia { display: none; }
[data-theme="navy"] .brand-symbol img.brand-symbol-navy { display: block; }
.brand-name { font-family: "Figtree", system-ui, sans-serif; font-size: max(19px, calc(19 * var(--unit))); font-weight: 600; letter-spacing: -.025em; }

.main-nav {
  display: flex;
  align-items: center;
  gap: calc(20 * var(--unit));
  margin-left: auto;
  align-self: center;
}

.nav-link {
  position: relative;
  padding: 9px 4px;
  color: var(--muted);
  font-weight: 500;
  transition: color 160ms ease, background 160ms ease;
  font-size: max(11px, calc(11 * var(--unit)));
  text-decoration: none;
  white-space: nowrap;
}

.nav-link:hover, .nav-link[aria-current="page"] { color: var(--text); }
.nav-link:hover { background: color-mix(in oklab, var(--text) 4%, transparent); border-radius: 3px; }

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  right: 4px;
  bottom: 2px;
  left: 4px;
  height: 2px;
  background: var(--gold-ink);
}

/* Keep the hero in place beneath the more compact header. */
.page-content { padding: calc(39 * var(--unit)) calc(36 * var(--unit)) calc(18 * var(--unit)); }

.hero {
  position: relative;
  min-height: calc(255 * var(--unit));
  padding-top: calc(14 * var(--unit));
  overflow-x: clip;
  overflow-y: visible;
}

.hero-copy { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) calc(270 * var(--unit)); width: 100%; }
.hero h1, .hero-subtitle { grid-column: 1 / -1; }
.hero-lead, .hero .actions { grid-column: 1; }

h1, .hero-subtitle {
  font-family: "EB Garamond", Georgia, serif;
  font-weight: 400;
  letter-spacing: 0;
}

.hero h1 { margin: 0 0 calc(16 * var(--unit)); font-size: calc(34.5 * var(--unit)); line-height: 1.035; }
.hero-subtitle { margin: 0 0 calc(12 * var(--unit)); font-size: calc(27 * var(--unit)); line-height: 1.15; }
.hero-subtitle strong { color: var(--gold-ink); font-weight: 700; }

.hero-lead {
  margin: 0 0 calc(16 * var(--unit));
  color: var(--muted);
  font-family: "EB Garamond", Georgia, serif;
  font-size: calc(17 * var(--unit));
  line-height: 1.5;
}

.actions { display: flex; flex-wrap: wrap; gap: calc(15 * var(--unit)); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: calc(9 * var(--unit));
  min-height: calc(36 * var(--unit));
  padding: calc(7 * var(--unit)) calc(14 * var(--unit));
  border: 1px solid var(--control-line);
  border-radius: 5px;
  color: inherit;
  font-size: max(12px, calc(13 * var(--unit)));
  text-decoration: none;
  white-space: nowrap;
  transition: box-shadow 160ms ease, transform 160ms ease;
}

.button-primary {
  border-color: var(--ref-gold);
  background: linear-gradient(145deg in oklab, color-mix(in oklab, var(--ref-gold) 94%, var(--ref-white)), var(--ref-gold));
  color: var(--ref-navy);
}

.button-secondary { background: var(--card); }
.button:hover { box-shadow: 0 3px 9px var(--shadow); transform: translateY(-1px); }

.button-mark {
  display: block;
  width: max(16px, calc(16 * var(--unit)));
  height: max(16px, calc(16 * var(--unit)));
  object-fit: contain;
  flex: none;
}

:root[data-theme="navy"] .openai-mark { filter: brightness(0) invert(94%); }

.text-link-arrow {
  display: inline-block;
  width: calc(15 * var(--unit));
  height: calc(15 * var(--unit));
  flex: none;
  background: currentColor;
  mask: url("/assets/arrow-right.svg") center / contain no-repeat;
}

.hero-photo-frame {
  position: absolute;
  top: 0;
  right: calc(-137 * var(--unit));
  width: calc(407 * var(--unit));
  height: calc(190 * var(--unit));
  isolation: isolate;
}

.hero-photo-shadow {
  position: absolute;
  inset: 0;
  filter: drop-shadow(0 calc(1 * var(--unit)) calc(1.5 * var(--unit)) var(--image-shadow-near))
    drop-shadow(0 calc(4 * var(--unit)) calc(6 * var(--unit)) var(--image-shadow-far));
}

.hero-atmosphere {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-atmosphere::before, .hero-atmosphere::after {
  content: "";
  position: absolute;
}

.hero-atmosphere::after {
  left: calc(var(--photo-x) + 12 * var(--unit));
  top: calc(var(--photo-y) - 42 * var(--unit));
  width: calc(var(--photo-width) - 47 * var(--unit));
  height: calc(var(--photo-height) + 36 * var(--unit));
  border-radius: calc(18 * var(--unit));
  background: linear-gradient(150deg in oklab, transparent 3%, var(--aura-core) 29%, var(--aura-fringe) 53%, transparent 83%);
  filter: blur(calc(24 * var(--unit)));
  opacity: .65;
  transform: skewX(-32.7deg);
}

.hero-atmosphere::before {
  inset: 0;
  background: var(--grid-line);
  mask-image: url("/branding/isometric-grid.svg"), radial-gradient(ellipse var(--grid-rx) var(--grid-ry) at var(--grid-cx) var(--grid-cy), var(--ref-white) 6%, transparent 76%);
  mask-size: calc(83.1384387633 * var(--unit)) calc(48 * var(--unit)), 100% 100%;
  mask-position: var(--grid-x) var(--grid-y), 0 0;
  mask-repeat: repeat, no-repeat;
  mask-composite: intersect;
}

.hero-photo-window {
  position: absolute;
  inset: 0;
  overflow: hidden;
  mask: url("/branding/photo-mask.svg") 0 0 / 100% 100% no-repeat;
}

.hero-photo-window img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: 50% 68%; }

.study-flow {
  margin: calc(22 * var(--unit)) 0 calc(26 * var(--unit));
  padding-top: calc(20 * var(--unit));
  border-top: 1px solid var(--line);
}

.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin: 0; padding: 0; list-style: none; }
.steps li { display: flex; flex-direction: column; align-items: flex-start; min-width: 0; gap: calc(10 * var(--unit)); padding-right: calc(20 * var(--unit)); }
.steps li + li { padding-left: calc(16 * var(--unit)); border-left: 1px solid color-mix(in oklab, var(--line) 25%, transparent); }

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(33 * var(--unit));
  height: calc(33 * var(--unit));
  border: 1px solid var(--line);
  border-radius: 50%;
  flex: none;
  font-family: "Figtree", system-ui, sans-serif;
}

.steps h2 { font-family: "Figtree", system-ui, sans-serif; font-weight: 400; letter-spacing: 0; margin: 1px 0 calc(7 * var(--unit)); font-size: max(13px, calc(15 * var(--unit))); line-height: 1.4; }
.steps p { margin: 0; color: var(--muted); font-family: "Figtree", system-ui, sans-serif; font-size: max(12px, calc(13 * var(--unit))); line-height: 1.5; }

.demonstration {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  gap: calc(36 * var(--unit));
  padding: calc(18 * var(--unit)) calc(20 * var(--unit)) calc(18 * var(--unit)) calc(28 * var(--unit));
  border-radius: 8px;
  background: var(--panel);
}

.eyebrow { margin: 0 0 calc(12 * var(--unit)); color: var(--muted); font-size: max(9px, calc(9 * var(--unit))); line-height: 1.5; letter-spacing: .13em; text-transform: uppercase; }
.demonstration h2 { font-family: "Figtree", system-ui, sans-serif; font-weight: 400; margin: 0 0 calc(10 * var(--unit)); font-size: calc(27 * var(--unit)); line-height: 1.02; }
.demonstration-copy > p:not(.eyebrow) { margin: 0; color: var(--muted); font-family: "EB Garamond", Georgia, serif; font-size: max(12px, calc(13 * var(--unit))); line-height: 1.4; }
.demonstration-copy > p:not(.eyebrow) + p { margin-top: 1em; }
.study-sources h3 { margin: 0 0 .65em; font-family: "EB Garamond", Georgia, serif; font-size: max(18px, calc(19 * var(--unit))); font-weight: 400; line-height: 1.2; }

.demonstration-link {
  display: block;
  width: 100%;
  overflow: hidden;
  border-radius: calc(14 * var(--unit));
  box-shadow: 0 calc(1 * var(--unit)) calc(1.5 * var(--unit)) var(--image-shadow-near), 0 calc(4 * var(--unit)) calc(6 * var(--unit)) var(--image-shadow-far);
}

.demonstration-link-dark { display: none; }
[data-theme="navy"] .demonstration-link-light { display: none; }
[data-theme="navy"] .demonstration-link-dark { display: block; }

.demonstration-photo { display: block; width: 100%; height: auto; object-fit: contain; transition: transform 220ms ease; }
.demonstration-link:hover .demonstration-photo { transform: scale(1.012); }
.demonstration-details { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 12px 24px; margin-top: calc(-20 * var(--unit)); }
.demonstration-details .text-link { font-size: max(12px, calc(11 * var(--unit))); font-weight: 600; }
.button-documentation { margin-top: 20px; background: var(--card); font-weight: 500; }
.demonstration-caption { margin: 0; color: var(--muted); font-size: max(11px, calc(10 * var(--unit))); line-height: 1.5; }

.technical-setup { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin: calc(22 * var(--unit)) 0 0; color: var(--muted); font-size: max(11px, calc(12 * var(--unit))); }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--gold-ink); text-decoration: none; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }


.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin: calc(18 * var(--unit)) calc(36 * var(--unit)) 0;
  padding: calc(18 * var(--unit)) 0 calc(24 * var(--unit));
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: max(10px, calc(11 * var(--unit)));
}

.footer-identity { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 14px; }
.footer-identity > p { margin: 0; color: var(--text); }
.footer-identity a { color: inherit; text-decoration: none; }
.footer-identity a:hover { color: var(--text); text-decoration: underline; text-underline-offset: 4px; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--gold-ink); outline-offset: 3px; }

.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;
}

@media (max-width: 620px) {
  .site-shell { --unit: 1px; font-size: 14px; }
  .site-header { padding: 8px 20px; gap: 16px; }
  .brand { min-height: 48px; }
  .brand { gap: 8px; }
  .brand-symbol { width: 52px; height: 36px; }
  .brand-name { font-size: 21px; }
  .main-nav { gap: 18px; }
  .nav-link { font-size: 12px; }
  .page-content { padding: 26px 22px 24px; }
  .hero { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; min-height: 0; padding-top: 8px; }
  .hero-copy { display: contents; }
  .hero h1 { grid-row: 1; font-size: clamp(34px, 8.7cqw, 48px); line-height: 1.08; margin: 0; }
  .hero-subtitle { grid-row: 2; font-size: 22px; line-height: 1.25; margin: 0; }
  .hero-lead { grid-row: 3; max-width: none; margin: 0; font-size: 16px; line-height: 1.5; }
  .hero .actions { grid-row: 4; gap: 10px; margin: 0; align-self: end; }
  .hero .button { width: auto; min-width: 0; min-height: 44px; padding: 7px 12px; gap: 7px; font-size: 12px; }
  .hero-photo-frame, .hero-atmosphere { display: none; }
  .study-flow { margin: 24px 0; padding-top: 22px; }
  .steps { grid-template-columns: 1fr; gap: 16px; }
  .steps li { flex-direction: row; gap: 14px; }
  .steps li + li { padding-left: 0; border-left: 0; }
  .steps h2 { margin-bottom: 4px; font-size: 16px; }
  .steps p { font-size: 13px; line-height: 1.45; }
  .demonstration { grid-template-columns: 1fr; gap: 18px; padding: 20px; }
  .demonstration h2 { font-size: 28px; line-height: 1.1; }
  .demonstration h2 br { display: none; }
  .demonstration-copy > p:not(.eyebrow) { font-size: 14px; }
  .site-footer { margin: 18px 22px 0; padding-bottom: 28px; }
}

@media (max-width: 410px) {
  .site-header { padding: 8px 16px; gap: 10px; }
  .brand { min-height: 44px; }
  .brand-symbol { width: 44px; height: 30px; }
  .brand-name { font-size: 19px; }
  .main-nav { gap: 10px; }
  .nav-link { font-size: 11px; }
  .page-content { padding: 23px 20px 24px; }
  .hero h1 { font-size: clamp(31px, 8.7cqw, 35px); }
  .actions { gap: 10px; }
  .button { gap: 7px; }
  .site-footer { margin-right: 20px; margin-left: 20px; }
}

@media (pointer: coarse) { .site-shell a, .site-shell button { min-height: 44px; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

:root[data-theme="navy"] .button-primary .openai-mark { filter: none; }

.scholar-name { white-space: nowrap; }