/* Hallmark · macrostructure: Workbench · theme: existing Paper & Forest · tone: calm, concrete · anchor hue: forest-green
 * pre-emit critique: Philosophy 5 · Hierarchy 4 · Execution 4 · Specificity 5 · Restraint 5 · Variety 4
 */
@import url('./tokens.css');
* { box-sizing: border-box; }
html, body { margin: 0; overflow-x: clip; }
html { scroll-padding-top: 100px; }
body { background: var(--color-canvas); color: var(--color-ink); font: var(--text-base)/1.7 var(--font-body); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: 5px; }
button { font: inherit; color: inherit; cursor: pointer; }
button, a { -webkit-tap-highlight-color: transparent; }
button, a, summary { touch-action: manipulation; }
a, button, summary { outline-offset: 5px; }
:focus-visible { outline: 2px solid var(--color-accent); }
button:disabled { opacity: .45; cursor: default; }
[hidden] { display: none !important; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { font-style: normal; overflow-wrap: anywhere; line-height: 1.3; letter-spacing: -.045em; }
.icon { flex-shrink: 0; vertical-align: middle; }
.sr-only, .skip:not(:focus) { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip:focus { position: fixed; top: var(--space-sm); left: var(--space-sm); background: var(--color-paper); padding: var(--space-lg); z-index: 10; }
.site-header, .site-footer, .section-width { max-width: 1248px; margin-inline: auto; padding-inline: var(--space-3xl); }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-xl); height: 100px; }
.brand { display: inline-flex; gap: var(--space-sm); align-items: center; white-space: nowrap; text-decoration: none; font: 600 25px/1.2 var(--font-display); letter-spacing: -.7px; }
.brand img { border-radius: 9px; }
.site-header nav { display: flex; align-items: center; gap: var(--space-2xl); font-size: var(--text-sm); }
.site-header nav > a { white-space: nowrap; text-decoration: none; }
.site-header nav > a:hover:not(.button), .text-link:hover { color: var(--color-accent); text-decoration: underline; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-md); min-height: 44px; width: fit-content; padding: 10px 18px; border: var(--rule) solid var(--color-control); background: var(--color-paper); border-radius: var(--radius-control); text-decoration: none; font-weight: 600; white-space: nowrap; font-size: var(--text-sm); transition: transform var(--dur-press) var(--ease-out), opacity var(--dur-press) var(--ease-out); }
.button.primary { background: var(--color-accent); color: var(--color-paper); border-color: var(--color-accent); }
.button:hover { opacity: .88; }
.button:active { transform: translateY(1px); }
.text-link { display: inline-flex; gap: var(--space-sm); align-items: center; width: fit-content; min-height: 44px; font-size: var(--text-sm); font-weight: 600; text-decoration: none; background: none; border: 0; padding: 0; white-space: nowrap; }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr); align-items: center; gap: var(--space-3xl); padding-top: var(--space-3xl); padding-bottom: var(--space-5xl); }
.product-kind { color: var(--color-accent); font-size: var(--text-sm); margin-bottom: var(--space-xl); font-weight: 600; }
.hero h1 { font-size: var(--text-display); line-height: 1.25; letter-spacing: -.06em; }
.hero-description { font-size: var(--text-lg); margin-top: var(--space-xl); color: var(--color-muted); word-break: keep-all; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-lg); margin-top: var(--space-2xl); }
.hero-actions .button { min-height: 48px; }
.quiet-note { font-size: var(--text-xs); color: var(--color-muted); margin-top: var(--space-lg); }
.product-demo { min-width: 0; align-self: center; }
.demo-toolbar { display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm); margin-bottom: var(--space-lg); }
.mode-tabs { display: flex; gap: var(--space-xs); background: var(--color-soft); border-radius: var(--radius-control); padding: var(--space-xs); }
.mode-tabs button { display: flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 12px; min-height: 44px; border: 0; border-radius: 9px; background: none; font-size: var(--text-sm); white-space: nowrap; }
.mode-tabs button[aria-selected=true] { background: var(--color-paper); font-weight: 600; }
.demo-label { font-size: var(--text-xs); color: var(--color-muted); white-space: nowrap; }
.demo-stage { background: var(--color-paper); border: var(--rule) solid var(--color-border); border-radius: var(--radius-panel); padding: var(--space-xl); min-height: 486px; }
.demo-panel { animation: appear var(--dur-content) var(--ease-out); }
.collection-caption { display: flex; gap: var(--space-sm); justify-content: space-between; color: var(--color-muted); font-size: var(--text-xs); margin-bottom: var(--space-xl); }
.collection-caption span:last-child { white-space: nowrap; }
.learning-card { border: 5px solid var(--color-frame); outline: 1px solid var(--color-frame-edge); outline-offset: -11px; border-radius: var(--radius-card); padding: var(--space-xl) var(--space-2xl); min-height: 344px; background: var(--color-paper); }
.card-role { display: flex; align-items: center; gap: var(--space-sm); font-size: var(--text-xs); color: var(--color-muted); }
.role-dot { width: 9px; height: 9px; border: 1px solid var(--color-control); border-radius: 2px; background: var(--color-soft); }
.learning-card h2 { margin-top: var(--space-sm); font-size: 32px; }
#demo-card-question { white-space: pre-line; margin-top: var(--space-md); font-size: var(--text-base); line-height: 1.7; word-break: keep-all; }
.answer-placeholder { padding-top: var(--space-xl); display: grid; gap: 9px; }
.answer-placeholder span { height: 8px; border-radius: var(--radius-pill); background: var(--color-soft); }
.answer-placeholder span:nth-child(2) { width: 84%; }
.answer-placeholder span:nth-child(3) { width: 63%; }
.card-answer { margin-top: var(--space-lg); font-size: var(--text-sm); color: var(--color-muted); }
.card-answer p + p { margin-top: var(--space-sm); }
.reveal-button { display: flex; align-items: center; gap: var(--space-sm); min-height: 44px; border: 0; background: transparent; padding: var(--space-sm) 0 0; margin-top: var(--space-md); font-size: var(--text-sm); font-weight: 600; }
.card-controls { display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm); padding-top: var(--space-md); }
.card-controls button { min-height: 44px; background: none; border: 0; padding: 0; font-size: var(--text-sm); white-space: nowrap; }
.card-controls span { color: var(--color-muted); font-size: 11px; }
.product-demo figcaption { color: var(--color-muted); font-size: 11px; margin-top: var(--space-md); text-align: center; }
.demo-graph { width: 100%; max-height: 340px; display: block; }
.graph-edge { stroke: var(--color-control); fill: none; stroke-width: 1.8; }
#arrow-tip path { stroke: var(--color-control); fill: none; stroke-width: 1.5; }
.graph-node rect { fill: var(--color-soft); stroke: var(--color-control); stroke-width: 1.5; }
.graph-node.selected rect { stroke: var(--color-accent-strong); stroke-width: 2.5; }
.graph-node text { fill: var(--color-ink); font: 600 20px var(--font-body); text-anchor: middle; }
.edge-label { fill: var(--color-muted); font: 13px var(--font-body); }
.graph-explanation { text-align: center; color: var(--color-muted); font-size: var(--text-sm); margin-top: var(--space-md); }
.study-panel h2 { font-size: 25px; margin: var(--space-2xl) 0; }
.quiz-options { display: grid; gap: var(--space-md); }
.quiz-options button { display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm); padding: 14px 16px; min-height: 52px; border: 1px solid var(--color-border); border-radius: var(--radius-control); background: var(--color-paper); text-align: left; font-size: var(--text-sm); }
.quiz-options button:hover { border-color: var(--color-control); }
.quiz-options button.correct { background: var(--color-soft); border-color: var(--color-accent); }
.quiz-options button.incorrect { border-color: var(--color-danger); }
.quiz-feedback { min-height: 48px; margin-top: var(--space-xl); font-size: var(--text-sm); color: var(--color-muted); }
.idea-section { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--space-3xl); padding-top: var(--space-3xl); padding-bottom: var(--space-5xl); }
.idea-section h2, .ownership-section h2, .make-section h2 { font-size: var(--text-heading); line-height: 1.4; }
.idea-copy { font-size: var(--text-lg); color: var(--color-muted); }
.idea-copy p + p { margin-top: var(--space-lg); }
.library-section { padding-bottom: var(--space-5xl); }
.section-heading { display: flex; gap: var(--space-xl); justify-content: space-between; align-items: end; margin-bottom: var(--space-2xl); }
.section-heading h2 { font-size: var(--text-heading); }
.section-heading p { color: var(--color-muted); margin-top: var(--space-md); }
.subject-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-lg); }
.subject-tile { padding: var(--space-2xl); min-height: 260px; background: var(--color-soft); border-radius: var(--radius-panel); }
.subject-tile.science { background: var(--color-inset); }
.subject-tile.humanities { background: var(--color-paper); }
.subject-art { display: block; font: 66px/1.2 var(--font-display); letter-spacing: -.08em; margin-bottom: var(--space-xl); }
.subject-art span { display: inline-block; font-size: 38px; margin-left: var(--space-lg); color: var(--color-muted); transform: translateY(10px); }
.subject-tile h3 { font-size: var(--text-xl); margin-bottom: var(--space-sm); }
.subject-tile p { color: var(--color-muted); font-size: var(--text-sm); word-break: keep-all; }
.section-note { color: var(--color-muted); font-size: var(--text-xs); margin-top: var(--space-lg); }
.ownership-section { background: var(--color-soft); padding-block: var(--space-4xl); }
.ownership-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--space-3xl); }
.ownership-layout > div { font-size: var(--text-lg); }
.ownership-layout .muted { max-width: 390px; color: var(--color-muted); font-size: var(--text-sm); margin: var(--space-lg) 0; }
.make-section { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--space-4xl); padding-block: var(--space-5xl); }
.make-intro p { color: var(--color-muted); margin-top: var(--space-xl); }
.make-intro .text-link { margin-top: var(--space-lg); }
.import-list a { display: flex; align-items: center; gap: var(--space-xl); padding-block: var(--space-xl); border-bottom: var(--rule) solid var(--color-border); text-decoration: none; }
.import-list a:first-child { padding-top: 0; }
.import-list a > .icon { margin-left: auto; }
.import-icon { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; background: var(--color-soft); border-radius: var(--radius-control); flex-shrink: 0; }
.import-list strong { display: block; font-weight: 600; }
.import-list small { font-size: var(--text-sm); color: var(--color-muted); }
.import-list a:hover strong { text-decoration: underline; }
.protocol-callout { display: flex; gap: var(--space-2xl); align-items: center; justify-content: space-between; padding-block: var(--space-3xl); border-top: var(--rule) solid var(--color-border); border-bottom: var(--rule) solid var(--color-border); }
.protocol-callout h2 { font-size: 25px; }
.protocol-callout p { color: var(--color-muted); margin-top: var(--space-md); font-size: var(--text-sm); }
.final-section { padding-block: var(--space-5xl); text-align: center; }
.final-section p { font-size: var(--text-heading); font-weight: 600; letter-spacing: -.04em; margin-bottom: var(--space-2xl); }
.site-footer { display: flex; align-items: center; gap: var(--space-xl); flex-wrap: wrap; padding-block: var(--space-2xl); border-top: var(--rule) solid var(--color-border); }
.site-footer .brand { font-size: 21px; }
.site-footer p { font-size: var(--text-xs); color: var(--color-muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: var(--space-xl); margin-left: auto; }
.site-footer nav a { font-size: var(--text-xs); white-space: nowrap; text-decoration: none; }
.docs-page { background: var(--color-paper); }
.docs-page .site-header { max-width: 1456px; border-bottom: var(--rule) solid var(--color-border); }
.docs-layout { max-width: 1456px; padding: var(--space-3xl); margin-inline: auto; display: grid; grid-template-columns: 208px minmax(0, 700px) 170px; gap: var(--space-3xl); justify-content: center; }
.docs-sidebar { position: sticky; top: var(--space-xl); height: fit-content; }
.docs-nav summary { display: none; }
.nav-group { margin-bottom: var(--space-xl); }
.nav-group p { color: var(--color-muted); font-size: var(--text-xs); margin-bottom: var(--space-sm); }
.nav-group a { display: block; width: fit-content; min-height: 36px; text-decoration: none; font-size: var(--text-sm); padding: 5px 10px; margin-left: -10px; border-radius: 7px; white-space: nowrap; }
.nav-group a[aria-current] { color: var(--color-accent-strong); background: var(--color-soft); font-weight: 600; }
.nav-group a:hover { text-decoration: underline; }
.schema-link { display: inline-flex; align-items: center; gap: var(--space-sm); min-height: 44px; font-size: var(--text-xs); white-space: nowrap; }
.doc-main { min-width: 0; }
.doc-meta { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-sm); color: var(--color-muted); font-size: var(--text-xs); margin-bottom: var(--space-xl); }
.doc-meta a { white-space: nowrap; text-decoration: none; }
.raw-link { display: inline-flex; align-items: center; gap: var(--space-xs); margin-left: auto; min-height: 32px; }
.raw-link .icon { width: 14px; height: 14px; }
.prose h1 { font-size: clamp(30px,3.2vw,42px); margin-bottom: var(--space-xl); }
.prose h2 { font-size: var(--text-xl); margin: var(--space-3xl) 0 var(--space-lg); }
.prose h3 { font-size: var(--text-lg); margin-top: var(--space-xl); }
.prose p { margin-block: var(--space-lg); word-break: keep-all; overflow-wrap: anywhere; }
.prose ul, .prose ol { padding-left: var(--space-xl); }
.prose li { margin-block: var(--space-sm); padding-left: var(--space-xs); }
.prose li::marker { color: var(--color-accent); }
.prose a { color: var(--color-accent-strong); }
.prose code { font: .85em var(--font-code); background: var(--color-inset); padding: 2px 5px; border-radius: 4px; overflow-wrap: anywhere; }
.prose pre { position: relative; padding: var(--space-xl); padding-top: var(--space-3xl); background: var(--color-inset); border: 1px solid var(--color-border); border-radius: var(--radius-control); overflow: auto; font-size: 13px; line-height: 1.7; }
.prose pre code { padding: 0; font-size: inherit; overflow-wrap: normal; }
.copy-code { position: absolute; right: var(--space-sm); top: var(--space-xs); display: flex; align-items: center; gap: var(--space-xs); min-height: 36px; padding: 4px 8px; border: 0; background: var(--color-inset); font-size: var(--text-xs); white-space: nowrap; }
.copy-code .icon { width: 15px; height: 15px; }
.table-scroll { max-width: 100%; overflow-x: auto; }
.prose table { border-collapse: collapse; width: 100%; font-size: var(--text-sm); margin-block: var(--space-lg); }
.prose th, .prose td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--color-border); vertical-align: top; }
.prose th { font-weight: 600; background: var(--color-soft); }
.prose table code { background: none; padding: 0; }
.doc-toc { position: sticky; height: fit-content; top: var(--space-xl); font-size: var(--text-xs); }
.doc-toc > p { margin-bottom: var(--space-md); font-weight: 600; }
.doc-toc nav { border-left: 1px solid var(--color-border); padding-left: var(--space-lg); display: grid; gap: var(--space-md); }
.doc-toc a { text-decoration: none; color: var(--color-muted); }
.doc-pagination { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--space-xl); margin-top: var(--space-4xl); padding-block: var(--space-xl); border-top: 1px solid var(--color-border); }
.doc-next { text-decoration: none; }
.doc-next span { font-size: var(--text-xs); color: var(--color-muted); }
.doc-next strong { display: flex; align-items: center; gap: var(--space-sm); font-weight: 500; font-size: var(--text-sm); }
@keyframes appear { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }
@media(max-width:1150px) { .doc-toc { display: none; } .docs-layout { grid-template-columns: 200px minmax(0,700px); gap: var(--space-2xl); } .demo-label { display: none; } .hero { gap: var(--space-2xl); } .demo-stage { padding: var(--space-lg); } .learning-card { padding-inline: var(--space-xl); } .card-controls span { display: none; } }
@media(max-width:800px) { .site-header, .site-footer, .section-width { padding-inline: var(--space-xl); } .site-header { height: 80px; } .hero { grid-template-columns: minmax(0,1fr); padding-top: var(--space-2xl); gap: var(--space-3xl); padding-bottom: var(--space-4xl); } .hero-intro { max-width: 620px; } .hero h1 { font-size: clamp(36px,6vw,52px); } .product-demo { width: 100%; max-width: 570px; margin-inline: auto; } .demo-stage { min-height: 486px; padding: var(--space-xl); } .card-controls span { display: inline; } .learning-card { min-height: 344px; } .idea-section, .ownership-layout, .make-section { grid-template-columns: minmax(0,1fr); gap: var(--space-xl); } .idea-section { padding-bottom: var(--space-4xl); } .idea-copy { font-size: var(--text-base); } .section-heading { align-items: start; flex-direction: column; gap: var(--space-sm); } .subject-tile { padding: var(--space-xl); } .subject-tile h3 { font-size: var(--text-lg); } .subject-art { font-size: 48px; } .subject-art span { margin-left: var(--space-sm); font-size: 28px; } .protocol-callout { flex-direction: column; align-items: start; } .make-section { gap: var(--space-2xl); padding-block: var(--space-4xl); } .library-section { padding-bottom: var(--space-4xl); } .ownership-section { padding-block: var(--space-3xl); } .docs-layout { grid-template-columns: minmax(0,1fr); padding: var(--space-xl); gap: var(--space-xl); } .docs-sidebar { position: static; } .docs-nav { border-bottom: 1px solid var(--color-border); padding-bottom: var(--space-md); } .docs-nav summary { display: flex; justify-content: space-between; align-items: center; min-height: 44px; font-size: var(--text-sm); font-weight: 600; cursor: pointer; } .docs-nav nav { padding-top: var(--space-xl); } .schema-link { display: none; } .prose h2 { margin-top: var(--space-2xl); } .prose th, .prose td { padding-inline: var(--space-sm); } .site-footer nav { margin-left: 0; } }
@media(max-width:500px) { .site-header, .site-footer, .section-width { padding-inline: 20px; } .site-header { gap: var(--space-sm); height: 76px; } .brand { font-size: 23px; } .brand img { width: 28px; height: 28px; } .site-header nav { gap: var(--space-lg); } .site-header nav > a:first-child { display: none; } .header-cta { padding: 8px 10px; } .header-cta .icon { display: none; } .hero-description { font-size: var(--text-base); } .hero-actions { flex-direction: column; align-items: start; gap: var(--space-sm); } .product-kind { margin-bottom: var(--space-lg); } .demo-toolbar { margin-bottom: var(--space-md); } .mode-tabs { width: 100%; } .mode-tabs button { flex: 1; padding-inline: var(--space-sm); } .demo-stage { padding: var(--space-lg); min-height: 452px; } .learning-card { padding: 20px; min-height: 326px; } .learning-card h2 { font-size: 29px; } #demo-card-question { font-size: var(--text-sm); } .card-controls span { display: none; } .product-demo figcaption { text-align: left; } .collection-caption { margin-bottom: var(--space-lg); } .demo-graph { min-height: 300px; } .graph-explanation { font-size: var(--text-xs); } .study-panel h2 { font-size: var(--text-xl); margin-top: var(--space-xl); } .quiz-options button { padding-inline: var(--space-md); font-size: 13px; } .subject-grid { grid-template-columns: minmax(0,1fr); gap: var(--space-md); } .subject-tile { min-height: 140px; display: grid; grid-template-columns: 85px minmax(0,1fr); column-gap: var(--space-lg); align-content: center; } .subject-art { grid-row: span 2; align-self: center; margin: 0; font-size: 48px; white-space: nowrap; } .subject-art span { font-size: 25px; margin-left: 0; } .subject-tile p { font-size: 13px; } .subject-tile h3 { margin-bottom: var(--space-xs); } .import-list a { gap: var(--space-lg); } .protocol-callout h2 { font-size: var(--text-xl); } .desktop-break { display: none; } .docs-layout { padding: 12px 20px 32px; } .doc-meta > span:last-of-type { display: none; } .doc-next strong { font-size: var(--text-xs); white-space: nowrap; } .doc-next .icon { width: 15px; } .prose pre { padding-inline: var(--space-lg); } .site-footer { gap: var(--space-md); } .site-footer p { width: 100%; } .site-footer nav { gap: var(--space-lg); } }
@media(max-width:350px) { .brand { font-size: 20px; gap: 5px; } .site-header nav { gap: var(--space-md); } .header-cta { font-size: var(--text-xs); padding-inline: var(--space-sm); } .hero h1 { font-size: 32px; } .learning-card { padding-inline: 16px; } .demo-stage { padding: var(--space-md); } .mode-tabs button { font-size: 13px; gap: var(--space-xs); } .mode-tabs .icon { width: 17px; } .collection-caption { font-size: 10px; } .subject-tile { padding: 20px; grid-template-columns: 70px minmax(0,1fr); } }
@media(prefers-reduced-motion:reduce) { *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }

/* The preview mirrors the app's three bottom tabs. */
.product-demo {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: linear-gradient(160deg, var(--color-paper), var(--color-soft));
  padding: clamp(10px, 2vw, 20px);
}
.product-demo .demo-stage { border: 0; }
.product-demo .mode-tabs {
  position: relative;
  width: 100%;
  margin-top: -12px;
  padding: 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-paper) 82%, transparent);
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 24px rgb(30 55 40 / 10%);
}
.product-demo .mode-tabs button {
  flex: 1;
  padding-inline: 4px;
  border-radius: var(--radius-pill);
}
.product-demo .mode-tabs .icon { flex: none; width: 17px; }
.product-demo .mode-tabs button[aria-selected=true] { background: var(--color-soft); }
.demo-collection-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
}
.demo-collection-row h2 { font-size: var(--text-lg); word-break: keep-all; }
.demo-collection-row p, .demo-help { color: var(--color-muted); font-size: var(--text-sm); }
.demo-help { margin-top: var(--space-lg); }
.demo-collection-row details { position: relative; flex: none; }
.demo-collection-row summary {
  display: grid;
  place-items: center;
  cursor: pointer;
  width: 44px;
  min-height: 44px;
  border-radius: var(--radius-pill);
  background: var(--color-soft);
}
.demo-collection-row summary::-webkit-details-marker { display: none; }
.demo-collection-row details button {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  z-index: 1;
  white-space: nowrap;
  background: var(--color-paper);
}
.demo-back { min-height: 44px; margin-bottom: var(--space-md); }