/* Reference-page composition only. Website specimens inherit the production cascade. */
.style-guide { --sg-reading: 60ch; }
.style-guide main > .wrap { border-inline: 1px solid var(--frame-line); }
.style-guide .sg-intro { display: grid; grid-template-columns: 1.15fr 1fr; gap: 64px; align-items: center; }
.sg-kicker { color: var(--accent); font: 12px/1.6 var(--mono); margin: 0 0 22px; }
.style-guide .sg-intro h1 { font: 500 clamp(38px,5vw,64px)/1.08 var(--display); letter-spacing: -.04em; }
.sg-intro h1 em { color: var(--accent); font-style: normal; }
.sg-lead { margin: 28px 0 24px; max-width: 46ch; color: var(--muted); font-size: 17px; }
.sg-cover { border: 1px solid var(--line-strong); border-radius: 12px; background: var(--white); overflow: hidden; position: relative; }
.sg-cover::before { content: ''; position: absolute; inset: 0; background: linear-gradient(var(--frame-line) 1px,transparent 1px),linear-gradient(90deg,var(--frame-line) 1px,transparent 1px); background-size: 32px 32px; pointer-events: none; }
.sg-cover-meta,.sg-cover-bottom { position: relative; display: flex; justify-content: space-between; gap: 12px; padding: 20px 24px; font: 12px/1.6 var(--mono); color: var(--muted); }
.sg-cover-type { position: relative; padding: 0 32px 24px; font: 500 clamp(96px,10vw,144px)/1.2 var(--display); letter-spacing: -.07em; }
.sg-cover-type span { display: block; font: 12px/1.6 var(--mono); letter-spacing: 0; color: var(--muted); }
.sg-cover-spectrum { height: 3px; background: linear-gradient(90deg,#72e8e0,#9aafff,#ccadff,#f2a3c5,#ffe2b4); }
.sg-cover-bottom { background: var(--deep); }
.sg-index { position: sticky; top: 0; z-index: 10; display: flex; flex-wrap: wrap; gap: 4px 8px; padding: 14px var(--frame-inset); border-block: 1px solid var(--frame-line); background: var(--paper); }
.sg-index a { padding: 8px 10px; font-size: 13px; color: var(--muted); text-decoration: none; border-radius: 6px; }
.sg-index a:hover,.sg-index a[aria-current='location'] { color: var(--ink); background: var(--surface-hover); }
.sg-section { position: relative; scroll-margin-top: 88px; }
.sg-section-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: end; margin-bottom: 40px; }
.sg-section-heading h2 { font: 500 clamp(28px,3vw,38px)/1.18 var(--display); letter-spacing: -.035em; }
.sg-section-heading > p { margin: 0; color: var(--muted); max-width: var(--sg-reading); }
.sg-section h3 { font-size: 20px; font-weight: 500; line-height: 1.3; letter-spacing: -.02em; margin-bottom: 12px; }
.sg-section p { max-width: var(--sg-reading); }
.sg-principles { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); margin-bottom: 40px; border-block: 1px solid var(--line); }
.sg-principles > div { padding: 24px; border-inline-end: 1px solid var(--line); }
.sg-principles > div:first-child { padding-inline-start: 0; }
.sg-principles > div:last-child { padding-inline-end: 0; border: 0; }
.sg-principles strong { font: 500 19px/1.4 var(--display); }
.sg-principles p { color: var(--muted); font-size: 14px; margin: 12px 0 0; }
.sg-swatches { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 32px 24px; }
.sg-swatch { min-width: 0; }
.sg-swatch-paint { height: 100px; border: 1px solid var(--line-strong); border-radius: 8px; margin-bottom: 16px; }
.sg-swatch h3 { margin-bottom: 6px; font-size: 17px; }
.sg-swatch p { font-size: 13px; color: var(--muted); min-height: 43px; margin-bottom: 12px; }
.sg-token { display: flex; flex-wrap: wrap; gap: 4px 12px; justify-content: space-between; }
.sg-token code { font-size: 12px; background: none; padding: 0; color: var(--muted); }
.sg-action-palette { display: grid; grid-template-columns: 240px 1fr; gap: 32px; align-items: center; margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--line); }
.sg-gradient { min-height: 112px; border: 1px solid var(--ember-lilac); border-radius: 8px; background: var(--ember-action); }
.sg-action-palette p { color: var(--muted); font-size: 14px; margin: 8px 0 0; }
.style-guide .sg-note { font-size: 13px; color: var(--muted); max-width: 90ch; margin: 24px 0 0; line-height: 1.65; }
.sg-type-row { display: grid; grid-template-columns: 230px minmax(0,1fr); gap: 32px; padding: 32px 0; border-top: 1px solid var(--line); align-items: center; }
.sg-type-meta { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }
.sg-type-meta strong { color: var(--ink); font-size: 15px; margin-bottom: 4px; }
.sg-type-meta code { font-size: 12px; background: none; padding: 0; }
.sg-type-display { font: 500 clamp(38px,5vw,64px)/1.08 var(--display); letter-spacing: -.04em; }
.sg-type-section { font: 500 clamp(28px,3vw,38px)/1.18 var(--display); letter-spacing: -.035em; }
.sg-type-body { margin: 0; }
.sg-type-code { padding: 24px; background: var(--code-ground); border: 1px solid var(--line); border-radius: 8px; white-space: pre-wrap; overflow-wrap: anywhere; }
.sg-type-code code { font-size: 13px; }
.sg-grid-demo { border: 1px solid var(--line-strong); position: relative; border-radius: 4px; overflow: hidden; background: var(--deep); }
.sg-grid-measure { text-align: center; padding: 12px; font: 12px/1.6 var(--mono); color: var(--accent); border-bottom: 1px solid var(--line); background: repeating-linear-gradient(90deg,var(--frame-mark) 0 1px,transparent 1px 8px) bottom/100% 6px no-repeat; }
.sg-grid-columns { position: absolute; inset: 46px 32px 0; display: grid; grid-template-columns: repeat(12,1fr); gap: 12px; opacity: .45; }
.sg-grid-columns i { background: var(--surface-hover); border-inline: 1px solid var(--line); }
.sg-grid-copy { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 48px 16px; }
.sg-grid-copy strong { font: 500 32px/1.25 var(--display); letter-spacing: -.035em; text-align: center; }
.sg-grid-copy > span { font: 12px/1.6 var(--mono); writing-mode: vertical-rl; color: var(--accent); }
.sg-table-wrap { margin-top: 32px; overflow-x: auto; }
.sg-table-wrap table { width: 100%; border-collapse: collapse; font-size: 14px; }
.sg-table-wrap caption { text-align: left; font: 500 20px/1.4 var(--display); margin-bottom: 16px; }
.sg-table-wrap th,.sg-table-wrap td { padding: 16px 12px; border-bottom: 1px solid var(--line); text-align: left; }
.sg-table-wrap th { font-weight: 500; }
.sg-table-wrap thead { color: var(--muted); font-size: 12px; }
.sg-two-up { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 48px; margin-top: 40px; }
.sg-two-up p { color: var(--muted); font-size: 14px; }
.sg-space-scale { display: flex; flex-wrap: wrap; align-items: end; gap: 14px; margin: 32px 0; }
.sg-space-scale > div { display: flex; flex-direction: column; gap: 12px; }
.sg-space-scale span { height: 8px; display: block; background: var(--accent); border-radius: 2px; }
.sg-space-scale code { color: var(--muted); font-size: 12px; }
.sg-radius-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin: 24px 0; }
.sg-radius-row i { display: block; width: 64px; max-width: 100%; height: 64px; border: 1px solid var(--line-strong); background: var(--white); margin-bottom: 12px; }
.sg-radius-row span { display: block; font: 12px/1.6 var(--mono); color: var(--muted); }
.sg-components { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; align-items: start; }
.sg-component { padding: 28px; border: 1px solid var(--line); border-radius: 12px; background: var(--deep); min-width: 0; }
.sg-component > p { font-size: 14px; color: var(--muted); min-height: 69px; }
.sg-component-stage { min-height: 140px; display: flex; flex-direction: column; justify-content: center; padding-block: 20px; }
.style-guide .sg-component-stage .actions { justify-content: flex-start; margin: 0; gap: 8px; }
.sg-component-stage .restore-command { margin: 0; width: 100%; }
.sg-component-stage .restore-command code { white-space: normal; overflow-wrap: anywhere; font-size: 13px; }
.sg-component-stage .restore-command button { flex: none; }
.sg-copy-status { font-size: 12px; color: var(--accent); min-height: 20px; margin: 8px 0 0; }
.sg-code-details { border-top: 1px solid var(--line); padding-top: 16px; font-size: 13px; }
.sg-code-details summary { color: var(--accent); cursor: pointer; width: fit-content; }
.sg-code-details pre { margin-top: 20px; padding: 16px; background: var(--code-ground); border-radius: 4px; white-space: pre-wrap; overflow-wrap: anywhere; }
.sg-code-details p { color: var(--muted); margin: 16px 0 0; }
.style-guide .sg-faq-demo { display: block; padding: 0; }
.style-guide .sg-faq-demo::after { display: none; }
.style-guide .sg-faq-demo details { margin: 0; }
.sg-sculptures { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.sg-sculptures figure { margin: 0; min-width: 0; padding: 24px; border-inline-end: 1px solid var(--line); background: var(--deep); }
.sg-sculptures figure:last-child { border: 0; }
.sg-sculptures figure > div { display: flex; justify-content: center; }
.sg-sculptures img { width: min(100%,160px); height: 160px; object-fit: contain; }
.sg-sculptures figcaption { text-align: center; padding: 20px 0 0; }
.sg-sculptures strong { display: block; font: 500 18px/1.4 var(--display); }
.sg-sculptures span { display: block; color: var(--muted); font-size: 12px; margin-top: 5px; }
.sg-orbit-sample { display: flex; flex-direction: column; justify-content: center; align-items: center; border: 1px solid var(--line); border-radius: 12px; background: var(--deep); padding: 24px; }
.sg-orbit-sample svg { width: 100%; }
.sg-orbit-sample span { color: var(--muted); font: 12px/1.6 var(--mono); text-align: center; margin-top: 20px; }
.sg-icon-line { display: flex; gap: 24px; color: var(--accent); padding-top: 12px; }
.sg-icon-line svg { width: 24px; height: 24px; }
.sg-boundary { padding: 24px; border-inline-start: 2px solid var(--accent); background: var(--white); }
.sg-boundary strong { color: var(--ink); }
.sg-boundary p { max-width: none; margin: 10px 0 0; }
.sg-motion-sequence { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); border-block: 1px solid var(--line); padding-block: 28px; gap: 32px; }
.sg-motion-sequence span { display: block; font: 12px/1.6 var(--mono); color: var(--accent); margin-bottom: 20px; }
.sg-motion-sequence strong { font: 500 20px/1.4 var(--display); }
.sg-motion-sequence p { font-size: 14px; color: var(--muted); margin: 12px 0 0; }
.sg-vocabulary { margin: 0; }
.sg-vocabulary > div { display: grid; grid-template-columns: 220px 1fr; gap: 32px; border-top: 1px solid var(--line); padding-block: 20px; }
.sg-vocabulary dt { font: 500 20px/1.4 var(--display); }
.sg-vocabulary dd { color: var(--muted); margin: 0; font-size: 15px; }
.sg-checklist { padding-left: 20px; margin: 20px 0 0; color: var(--muted); font-size: 14px; }
.sg-checklist li { padding-left: 8px; margin-block: 12px; }
.sg-source-list { padding: 0; list-style: none; font-size: 13px; }
.sg-source-list li { padding-block: 12px; border-bottom: 1px solid var(--line); }
.sg-source-list a { font-family: var(--mono); }
.sg-source-list span { display: block; color: var(--muted); margin-top: 4px; }
.style-guide .sg-footer { padding: 32px var(--frame-inset); display: flex; flex-wrap: wrap; gap: 16px 32px; border-inline: 1px solid var(--frame-line); font-size: 13px; color: var(--muted); }
.sg-footer > span { margin-right: auto; }
@media (max-width:1100px) {
  .style-guide .sg-intro { gap: 32px; }
  .sg-index { position: static; }
  .sg-section { scroll-margin-top: 24px; }
  .sg-section-heading,.sg-two-up { gap: 32px; }
  .sg-type-row { grid-template-columns: 180px minmax(0,1fr); }
  .sg-swatches { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .sg-swatch p { min-height: 0; }
  .sg-sculptures figure { padding: 16px; }
}
@media (max-width:760px) {
  .style-guide .site-header { justify-content: space-between; }
  .style-guide .brand { font-size: 17px; }
  .style-guide .nav { flex-wrap: wrap; gap: 4px; }
  .style-guide .sg-intro,.sg-section-heading,.sg-components,.sg-two-up,.sg-principles,.sg-motion-sequence { grid-template-columns: minmax(0,1fr); }
  .sg-cover { max-width: 480px; width: 100%; }
  .sg-cover-type { font-size: 112px; }
  .sg-section-heading { gap: 20px; margin-bottom: 28px; }
  .sg-index { padding: 12px var(--frame-inset); gap: 4px; }
  .sg-index a { font-size: 12px; padding: 8px; }
  .sg-principles { margin-bottom: 28px; }
  .sg-principles > div,.sg-principles > div:first-child,.sg-principles > div:last-child { padding: 20px 0; border: 0; border-bottom: 1px solid var(--line); }
  .sg-principles > div:last-child { border: 0; }
  .sg-action-palette { grid-template-columns: minmax(0,1fr); gap: 24px; }
  .sg-gradient { min-height: 80px; }
  .sg-type-row { grid-template-columns: minmax(0,1fr); gap: 24px; }
  .sg-grid-copy { padding: 32px 10px; gap: 8px; }
  .sg-grid-copy strong { font-size: 24px; }
  .sg-grid-copy > span { font-size: 10px; }
  .sg-grid-columns { inset-inline: 16px; gap: 8px; grid-template-columns: repeat(6,1fr); }
  .sg-grid-columns i:nth-child(n+7) { display: none; }
  .sg-table-wrap table { font-size: 12px; }
  .sg-table-wrap th,.sg-table-wrap td { padding: 12px 4px; }
  .sg-component { padding: 20px; }
  .sg-component > p { min-height: 0; }
  .sg-component-stage { min-height: 120px; }
  .sg-sculptures { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .sg-sculptures figure { border: 0; border-bottom: 1px solid var(--line); }
  .sg-sculptures figure:nth-child(odd) { border-right: 1px solid var(--line); }
  .sg-sculptures figure:nth-last-child(-n+2) { border-bottom: 0; }
  .sg-sculptures img { height: 120px; }
  .sg-sculptures strong { font-size: 15px; }
  .sg-vocabulary > div { grid-template-columns: minmax(0,1fr); gap: 10px; }
  .sg-boundary { padding: 20px; }
  .sg-token { flex-direction: column; }
  .sg-component-stage .restore-command { gap: 8px; flex-wrap: wrap; }
}
@media (prefers-reduced-motion:reduce) {
  html:has(.style-guide) { scroll-behavior: auto; }
}
.sg-supporting-colors { margin-top: 28px; font-size: 14px; }
.sg-supporting-colors > summary { color: var(--accent); cursor: pointer; width: fit-content; }
.sg-supporting-colors .sg-table-wrap { margin-top: 16px; }
.sg-patterns { margin-top: 40px; }
.sg-pattern-links { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 32px; }
.sg-pattern-links a { display: block; padding-block: 20px; border-top: 1px solid var(--line); text-decoration: none; }
.sg-pattern-links strong { font-size: 15px; font-weight: 500; text-decoration: underline; text-underline-offset: 4px; }
.sg-pattern-links span { display: block; color: var(--muted); font-size: 13px; margin-top: 6px; }
.sg-brand-rule { display: flex; gap: 28px; align-items: center; margin-bottom: 32px; padding-bottom: 32px; border-bottom: 1px solid var(--line); }
.sg-brand-rule img { flex: none; }
.sg-brand-rule p { font-size: 14px; color: var(--muted); margin: 0; }
@media(max-width:760px) {
  .sg-pattern-links { grid-template-columns: minmax(0,1fr); }
  .sg-brand-rule { align-items: start; gap: 16px; }
  .sg-brand-rule img { width: 42px; height: 42px; }
  .sg-supporting-colors th code { overflow-wrap: anywhere; }
}