/* ============================================================
   /guide — field notes. Same system, documentary register.
   ============================================================ */

.guide-hero {
  background: var(--garnet-deep);
  background-image: radial-gradient(90% 80% at 70% 20%, rgba(196, 170, 112, 0.10), transparent 65%);
  color: var(--ivory);
  padding: calc(64px + var(--space-24)) 0 var(--space-24);
  position: relative; overflow: clip;
}
.guide-hero__grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--space-8); align-items: center; }
.guide-hero__copy { grid-column: 1 / span 7; }
.guide-hero__demo { grid-column: 8 / span 5; position: relative; aspect-ratio: 1; }
.guide-hero__demo canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.demo-fallback { display: none; position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.guide-hero .t-label { color: var(--gold); }
.guide-hero h1 { color: var(--ivory); margin-top: var(--space-6); }
.guide-hero h1 .em { color: var(--gold-light); }
.guide-hero__sub { margin-top: var(--space-8); color: rgba(233, 229, 223, 0.66); max-width: 520px; }
.guide-hero__meta { margin-top: var(--space-12); display: flex; gap: var(--space-8); flex-wrap: wrap; }
.guide-hero__meta .t-caption { color: rgba(233, 229, 223, 0.45); }
.guide-hero__meta strong { display: block; font-weight: 400; color: var(--gold-light); font-size: 12px; letter-spacing: 0.08em; }

.gsec { padding: var(--space-24) 0; }
.gsec + .gsec { border-top: 1px solid var(--border-fine); }
.gsec--linen { background: var(--linen); border-top: 0 !important; }
.gsec--dark {
  background: var(--garnet-deep); color: var(--ivory); border-top: 0 !important;
  background-image: radial-gradient(70% 60% at 30% 0%, rgba(196, 170, 112, 0.08), transparent 70%);
}
.gsec--dark .gsec__body, .gsec--dark p { color: rgba(233, 229, 223, 0.7); }
.gsec--dark .t-h2 { color: var(--ivory); }
.gsec__label { color: var(--gold-dark); display: block; }
.gsec--dark .gsec__label { color: var(--gold); }
.gsec__head { max-width: 640px; margin-bottom: var(--space-16); }
.gsec__head .t-h2 { margin-top: var(--space-4); }
.gsec__head .t-h2 .em { color: var(--gold-dark); }
.gsec--dark .gsec__head .t-h2 .em { color: var(--gold-light); }
.gsec__body { color: var(--muted); max-width: var(--prose-max); }
.gsec__body p + p { margin-top: var(--space-4); }
.gsec__body strong { font-weight: 400; color: var(--black); }
.gsec--dark .gsec__body strong { color: var(--ivory); }
.gsec__cols { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--space-8); }

/* palette */
.swatches { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); }
.swatch { border: 1px solid var(--border-fine); background: var(--ivory); }
.swatch__chip { height: 110px; position: relative; }
.swatch__chip .t-caption { position: absolute; bottom: var(--space-2); right: var(--space-3); color: rgba(255,255,255,0.75); }
.swatch__chip--light .t-caption { color: rgba(0,0,0,0.45); }
.swatch__meta { padding: var(--space-4); }
.swatch__meta .t-label { display: block; }
.swatch__meta .t-caption { display: block; margin-top: var(--space-1); }
.rules { margin: var(--space-12) 0 0; padding: 0; list-style: none; max-width: 640px; }
.rules li {
  padding: var(--space-4) 0 var(--space-4) var(--space-8); position: relative;
  border-bottom: 1px solid var(--border-fine); color: var(--muted); font-size: 13.5px;
}
.rules li::before {
  content: ""; position: absolute; left: 2px; top: 26px;
  width: 7px; height: 7px; border: 1px solid var(--gold); transform: rotate(45deg);
}
.rules strong { font-weight: 400; color: var(--black); }

/* type specimens */
.specimen { border: 1px solid var(--border-fine); padding: var(--space-12); background: var(--ivory); }
.specimen + .specimen { margin-top: var(--space-4); }
.specimen__name { color: var(--gold-dark); }
.specimen__sample { font-size: clamp(40px, 6vw, 84px); line-height: 1.05; margin: var(--space-6) 0; }
.specimen__sample.serif { font-family: var(--serif); font-weight: 300; }
.specimen__sample.sans { font-family: var(--sans); font-weight: 300; font-size: clamp(26px, 3.6vw, 48px); }
.specimen__note { color: var(--muted); font-size: 12.5px; max-width: 52ch; }
.scale-row {
  display: flex; align-items: baseline; gap: var(--space-8);
  padding: var(--space-4) 0; border-bottom: 1px solid var(--border-fine);
}
.scale-row .t-caption { flex: none; width: 130px; }
.scale-row .sample { font-family: var(--serif); font-weight: 300; line-height: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* motion demos */
.motion-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin-top: var(--space-8); }
.motion-card { border: 1px solid var(--border-fine); padding: var(--space-8); background: var(--ivory); cursor: pointer; }
.motion-card .chip {
  width: 48px; height: 48px; background: var(--garnet); margin: var(--space-6) 0;
}
.motion-card[data-speed="fast"] .chip { transition: transform var(--fast) var(--ease-out), background-color var(--fast) var(--ease-out); }
.motion-card[data-speed="base"] .chip { transition: transform var(--base) var(--ease-out), background-color var(--base) var(--ease-out); }
.motion-card[data-speed="slow"] .chip { transition: transform var(--slow) var(--ease-out), background-color var(--slow) var(--ease-out); }
.motion-card:hover .chip { transform: translateX(64px) rotate(45deg); background-color: var(--gold); }
.motion-card .t-caption { display: block; margin-top: var(--space-2); }

/* stone section */
.stone-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--space-8); align-items: center; }
.stone-grid__copy { grid-column: 1 / span 6; }
.stone-grid__demo { grid-column: 8 / span 5; aspect-ratio: 1; position: relative; }
.stone-grid__demo canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.params { margin-top: var(--space-8); border-top: 1px solid var(--ivory-fine); }
.params div { display: flex; justify-content: space-between; gap: var(--space-4); padding: var(--space-3) 0; border-bottom: 1px solid var(--ivory-fine); }
.params .t-caption { color: rgba(233, 229, 223, 0.45); }
.params code { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 11.5px; color: var(--gold-light); }

/* image pipeline */
.plate { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); margin-top: var(--space-8); }
.plate figure { margin: 0; }
.plate .ph { aspect-ratio: 1; overflow: hidden; }
.plate .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform 900ms var(--ease-out); }
.plate figure:hover .ph img { transform: scale(1.05); }
.plate figcaption { padding: var(--space-3) 0; }
.plate .t-caption { display: block; }
.prompt-note {
  margin-top: var(--space-12); border-left: 2px solid var(--gold); padding: var(--space-6) var(--space-8);
  background: rgba(196, 170, 112, 0.06); max-width: 720px;
}
.prompt-note code { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 12px; color: var(--black); }
.gsec--dark .prompt-note code { color: var(--gold-light); }

/* build stack */
.stack { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); margin-top: var(--space-8); }
.stack__item { border: 1px solid var(--border-fine); padding: var(--space-8); }
.stack__item .t-label { color: var(--gold-dark); }
.stack__item h3 { font-family: var(--serif); font-weight: 400; font-size: 22px; margin: var(--space-3) 0; }
.stack__item p { color: var(--muted); font-size: 13px; }

/* iteration log */
.log { margin-top: var(--space-8); position: relative; padding-left: var(--space-8); }
.log::before { content: ""; position: absolute; left: 3px; top: 6px; bottom: 6px; width: 1px; background: var(--border-fine); }
.log__entry { position: relative; padding-bottom: var(--space-12); }
.log__entry::before {
  content: ""; position: absolute; left: calc(-1 * var(--space-8) + 0px); top: 7px;
  width: 7px; height: 7px; background: var(--gold); transform: rotate(45deg);
}
.log__entry .t-label { color: var(--gold-dark); }
.log__entry h3 { font-family: var(--serif); font-weight: 400; font-size: 20px; margin: var(--space-2) 0 var(--space-3); }
.log__entry ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 13px; }
.log__entry li + li { margin-top: var(--space-2); }

/* responsive */
@media (max-width: 900px) {
  .guide-hero__copy, .guide-hero__demo { grid-column: 1 / -1; }
  .stone-grid__copy, .stone-grid__demo { grid-column: 1 / -1; }
  .swatches { grid-template-columns: repeat(2, 1fr); }
  .motion-grid { grid-template-columns: 1fr; }
  .plate { grid-template-columns: repeat(2, 1fr); }
  .stack { grid-template-columns: 1fr; }
}