:root {
  color-scheme: light;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  --head: Georgia, 'Times New Roman', serif;
  --body: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 2rem; }
body { margin: 0; background: var(--ground); color: var(--ink); font-family: var(--body); line-height: 1.7; }
body.dark { color-scheme: dark; }
a { color: inherit; text-underline-offset: .25em; }
a:hover { color: var(--accent); }
button, input, select { font: inherit; }
button, summary { cursor: pointer; }
button { border: 1px solid var(--ink); background: var(--ink); color: var(--ground); padding: .75rem 1.2rem; }
button:hover { background: var(--accent); color: var(--ground); }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 5px;
}
input, select {
  width: 100%; min-width: 0; border: 1px solid currentColor; border-radius: 0;
  padding: .75rem; background: var(--ground); color: var(--ink);
}
label { display: grid; gap: .45rem; font-size: .9rem; font-weight: 600; }
label input, label select { margin-bottom: .9rem; }
h1, h2, h3, .brand { font-family: var(--head); font-weight: 600; line-height: 1.09; }
h1 { font-size: clamp(2.4rem, 5.5vw, 5.8rem); letter-spacing: -.05em; margin: 1.4rem 0; max-width: 12ch; }
h2 { font-size: clamp(1.8rem, 3vw, 3rem); letter-spacing: -.025em; margin: 0 0 1rem; }
h3 { font-size: 1.7rem; margin: .6rem 0 1.4rem; }
p { margin: 0 0 1.25rem; }
.shell { max-width: 1600px; margin: auto; }
.site-header { padding: 2rem 4vw; border-bottom: 1px solid currentColor; }
.brand { display: block; font-size: clamp(1.5rem, 2.6vw, 2.6rem); text-decoration: none; letter-spacing: -.03em; }
.brand small {
  display: block;
  font: .65rem var(--body);
  letter-spacing: .18em;
  margin-top: .65rem;
  text-transform: uppercase;
}
.site-header nav { display: flex; gap: 1.5rem; flex-wrap: wrap; align-items: center; }
.site-header nav a { text-decoration: none; font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; }
.site-header details { display: none; }
.header-masthead .site-header { text-align: center; padding-block: 2.2rem; }
.header-masthead .site-header nav { justify-content: center; margin-top: 1.7rem; }
.header-left-nav .site-header { display: flex; justify-content: space-between; align-items: center; gap: 2rem; }
.header-split .site-header { display: grid; grid-template-columns: 1.2fr 1fr; padding: 0; }
.header-split .brand { padding: 2.5rem 4vw; background: var(--ink); color: var(--ground); }
.header-split .site-header nav { padding: 2rem 3vw; border-left: 1px solid currentColor; }
.header-rail .shell { display: grid; grid-template-columns: 220px minmax(0, 1fr); }
.header-rail .site-header {
  position: sticky;
  top: 0;
  height: 100vh;
  border-bottom: 0;
  border-right: 1px solid;
  padding: 3rem 1.6rem;
}
.header-rail .site-header nav { display: grid; margin-top: 4rem; gap: 2rem; }
.header-rail .brand { font-size: 1.8rem; overflow-wrap: anywhere; }
main { min-width: 0; }
.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 4vw; align-items: center; padding: 5rem 4vw; }
.hero-copy { max-width: 42rem; }
.eyebrow, .section-label { font-size: .68rem; text-transform: uppercase; letter-spacing: .18em; font-weight: 700; }
.hero .intro { font-size: 1.05rem; max-width: 44ch; }
.hero-link { display: inline-block; margin-top: .8rem; font-size: .85rem; font-weight: 700; }
.hero figure {
  margin: 0;
  padding: 1rem;
  border: 1px solid currentColor;
  background: var(--wash);
  color: var(--accent);
}
.hero svg { display: block; width: 100%; height: auto; }
.hero figcaption {
  font-size: .64rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--ink);
  padding: .8rem;
}
svg text { fill: currentColor; stroke: none; font: 13px var(--body); letter-spacing: 1px; }
svg .solid, svg .color0 { fill: var(--accent); }
svg .leaf, svg .color1 { fill: var(--secondary); }
svg .water, svg .color2 { fill: var(--wash); }
.topic-marbling svg .color0, .topic-marbling svg .color1, .topic-marbling svg .color2 { fill: none; stroke-width: 8; }
.topic-marbling svg .color0 { stroke: var(--accent); }
.topic-marbling svg .color1 { stroke: var(--secondary); }
.topic-marbling svg .color2 { stroke: var(--ink); }
.guides { padding: 4rem 4vw; border-top: 1px solid; }
.guides-heading {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: baseline;
  margin-bottom: 3rem;
}
.guide-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.2rem; }
.guide { min-width: 0; border-top: 3px solid var(--accent); padding-top: 1.2rem; }
.guide-number { font: .8rem var(--body); color: var(--accent); letter-spacing: .1em; }
.guide p { font-size: .96rem; }
.layout-1 .guide-list { grid-template-columns: 1fr; }
.layout-1 .guide {
  display: grid;
  grid-template-columns: 3rem minmax(150px, .8fr) 2fr;
  gap: 1.5rem;
  padding-block: 1.8rem;
}
.layout-1 .guide h3 { margin-top: 0; }
.layout-2 .hero { grid-template-columns: 1.2fr 1fr; }
.layout-2 .guide-list { grid-template-columns: 1fr 1fr; }
.layout-2 .guide:last-child { grid-column: 1 / -1; display: grid; grid-template-columns: 3rem 1fr 1.7fr; gap: 1.3rem; }
.layout-3 .hero { grid-template-columns: 1fr; text-align: center; }
.layout-3 .hero-copy { margin: auto; max-width: 56rem; }
.layout-3 h1 { max-width: 18ch; margin-inline: auto; }
.layout-3 .hero .intro { max-width: 58ch; margin-inline: auto; }
.layout-3 .hero figure { max-width: 700px; width: 100%; margin: auto; }
.layout-3 .guide { border: 1px solid; padding: 1.5rem; }
.tool { display: grid; grid-template-columns: .9fr 1.1fr; gap: 4vw; margin: 0 4vw 4rem; border: 1px solid; }
.tool-intro { padding: 2.5rem; background: var(--ink); color: var(--ground); }
.tool-intro h2 { margin-top: 1rem; }
.tool-work { padding: 2.5rem; min-width: 0; }
.fields { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: .8rem 1.2rem; }
#result {
  display: block;
  font-family: var(--head);
  font-size: 1.4rem;
  line-height: 1.5;
  margin-top: 1.6rem;
  padding-top: 1.2rem;
  border-top: 2px solid var(--accent);
}
.actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-bottom: 1rem; }
.checklist { display: grid; gap: .6rem; margin-bottom: 1.5rem; }
.checklist label { display: flex; align-items: center; gap: .7rem; }
.checklist input { width: 1.2rem; height: 1.2rem; margin: 0; accent-color: var(--accent); }
.route { border: 1px dashed; padding: 1rem; }
.keyboard { display: grid; grid-template-columns: repeat(6,minmax(0,1fr)); gap: .2rem; }
.keyboard button { padding: 1rem .15rem; background: var(--ground); color: var(--ink); font-size: .8rem; }
.keyboard button.active { background: var(--accent); color: var(--ground); }
#motion, #marble { display: block; width: 100%; margin-block: 1rem; border: 1px solid; background: var(--wash); }
.pulse { display: flex; flex-wrap: wrap; gap: .35rem; margin-block: 1rem; }
.pulse span { border: 1px solid; min-width: 2rem; padding: .4rem; text-align: center; }
.pulse span.lit { background: var(--accent); color: var(--ground); }
.pulse span.accent { border-width: 3px; }
.practice { display: grid; grid-template-columns: 1fr 2fr; gap: 3rem; padding: 3rem 4vw 5rem; border-top: 1px solid; }
.practice p { max-width: 68ch; }
.site-footer {
  padding: 2rem 4vw;
  border-top: 1px solid;
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  font-size: .75rem;
}
.site-footer p { margin: 0; }
.topic-memory .hero figure { border-width: 5px 1px 1px; }
.topic-speaking .guide { transform: rotate(-.4deg); box-shadow: 5px 5px 0 var(--wash); }
.topic-earthquakes .guides { border-top: 4px double; }
.topic-sundials .hero figure { border-radius: 50% 50% 0 0; }
.topic-juggling svg .water { fill: #3b8cdc; }
.topic-juggling h1 { letter-spacing: -.065em; text-transform: uppercase; }
.topic-bonsai .hero { padding-block: 7rem; }
.topic-firewood .guide { border-top: 7px double var(--accent); }
.topic-musictheory .guide-number { display: inline-block; border-bottom: 4px double; padding-bottom: .5rem; }
.topic-metronome .guide { border-top-width: 7px; }
.topic-naturaldye .guide { border-left: 8px solid var(--accent); padding-left: 1.2rem; }
.topic-mealprep .hero figure { transform: rotate(1deg); }
.topic-spices .guide-number { padding: .4rem .6rem; border: 1px solid; }
.topic-knifecare .hero figure { border-top: 8px double; }
.topic-castiron .tool { border-width: 4px; }
.topic-rainwater .guide { border-left: 3px solid var(--accent); padding-left: 1.5rem; }
.topic-marbling .hero figure { border-width: 8px; }
.topic-linocut .hero figure { outline: 1px solid; outline-offset: 7px; }
.topic-trees .guide { border-top-style: dashed; }
@media (min-width: 1500px) { .hero { padding-block: 6rem; } }
@media (max-width: 1000px) {
 .header-rail .shell { grid-template-columns: 180px minmax(0,1fr); }
 .header-rail .site-header { padding-inline: 1.1rem; }
 .hero, .layout-2 .hero { gap: 2rem; }
 .guide-list { grid-template-columns: 1fr; }
 .tool { grid-template-columns: 1fr; }
 .layout-1 .guide { grid-template-columns: 2rem 1fr; }
 .layout-1 .guide p { grid-column: 2; }
 .layout-2 .guide:last-child { display: block; }
 .tool-intro, .tool-work { padding: 2rem; }
}
@media (max-width: 720px) {
 h1 { font-size: clamp(2.7rem, 12vw, 4.7rem); }
 .site-header { padding: 1.5rem 6vw; }
 .header-rail .shell { display: block; }
 .header-rail .site-header { position: static; height: auto; border-right: 0; border-bottom: 1px solid; }
 .header-rail .site-header nav { display: flex; margin-top: 1rem; gap: 1rem; }
 .header-left-nav .site-header { display: block; }
 .header-left-nav .site-header > nav { display: none; }
 .header-left-nav .site-header details { display: block; margin-top: 1rem; }
 .header-left-nav details nav { display: grid; gap: 1rem; padding-top: 1rem; }
 .header-split .site-header { grid-template-columns: 1fr; }
 .header-split .brand { padding: 1.8rem 6vw; }
 .header-split .site-header nav { border-left: 0; padding: 1.2rem 6vw; }
 .hero, .layout-2 .hero { grid-template-columns: 1fr; padding: 3.5rem 6vw; }
 .hero figure { padding: .5rem; }
 .hero .intro { max-width: none; }
 .guides { padding: 3rem 6vw; }
 .guides-heading { display: block; }
 .guide-list, .layout-2 .guide-list { grid-template-columns: 1fr; }
 .layout-2 .guide:last-child { grid-column: auto; }
 .layout-1 .guide { display: block; }
 .tool { margin: 0 6vw 3rem; }
 .tool-intro, .tool-work { padding: 1.4rem; }
 .fields { grid-template-columns: 1fr; }
 .practice { grid-template-columns: 1fr; padding: 2.5rem 6vw; gap: .7rem; }
 .site-footer { flex-direction: column; padding: 2rem 6vw; gap: .7rem; overflow-wrap: anywhere; }
 .topic-bonsai .hero { padding-block: 3.5rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print {
 .site-header nav, .site-header details, .tool-work button { display: none !important; }
 .header-rail .shell { display: block; }
 .header-rail .site-header { position: static; height: auto; border: 0; }
 .hero, .guide-list, .tool, .practice { display: block; }
 .guide, .practice { break-inside: avoid; }
 body { background: white; color: black; }
}
:root {
--ground:#13141d;
--ink:#f3f1ef;
--accent:#f65b66;
--secondary:#efd25d;
--wash:#24334d;
--head:Arial, Helvetica, sans-serif;
}