/* Collection pages reuse the approved model shell, with a browse-first layout. */
.category-page { --collection-photo: #e6dfd3; }
.category-crumb { justify-content: flex-start; flex-wrap: wrap; gap: 12px; }
.category-crumb > span:last-child { color: var(--foreground); }
.category-page .category-crumb > span { display: inline; }
.category-hero { display: grid; grid-template-columns: .85fr 1.15fr; align-items: center; gap: clamp(30px, 5vw, 80px); padding-block: 14px 64px; }
.category-kicker, .collection-count, .train-kind, .category-photo-caption, .category-image-note { font: 11px/1.6 'Geist Mono', monospace; color: var(--muted); }
.category-kicker { margin: 0 0 26px; text-transform: uppercase; }
.category-hero h1 { margin: 0 0 26px; font-size: clamp(54px, 6.1vw, 94px); line-height: 1.02; font-weight: 400; letter-spacing: -.065em; }
.category-hero h1 span { display: block; color: var(--muted); }
.category-deck { max-width: 32ch; margin: 0 0 28px; font-size: clamp(17px, 1.5vw, 21px); line-height: 1.55; letter-spacing: -.02em; }
.category-hero .model-actions { gap: 14px 22px; }
.category-hero .model-button { background: var(--brand); color: #fff; }
.category-digital-note { max-width: 38ch; margin: 22px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.category-hero figure { margin: 0; min-width: 0; }
.category-hero-visual { display: grid; aspect-ratio: 2400 / 1792; overflow: hidden; background: var(--collection-photo); }
.category-hero img { display: block; width: 100%; height: 100%; object-fit: contain; }
.category-photo-caption { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding-top: 14px; }
.category-photo-caption a { text-decoration: underline; text-underline-offset: 4px; min-height: 44px; display: inline-flex; align-items: center; margin-top: -10px; }
.category-collection { padding-block: 46px 76px; border-top: 1px solid var(--rule); scroll-margin-top: 150px; }
.category-section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 36px; }
.category-section-heading h2 { margin: 0; font-size: clamp(36px, 4.2vw, 62px); line-height: 1.1; font-weight: 400; letter-spacing: -.05em; }
.collection-count { margin: 0 0 5px; white-space: nowrap; text-transform: uppercase; }
.train-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 52px 30px; list-style: none; padding: 0; margin: 0; }
.train-card { display: flex; flex-direction: column; height: 100%; min-width: 0; }
.train-card-visual { display: grid; place-items: center; aspect-ratio: 2400 / 1792; overflow: hidden; background: var(--collection-photo); }
.train-card-visual img { display: block; width: 100%; height: 100%; object-fit: contain; }
/* Crop the studio margins in this collection, keeping the original image files intact. */
[data-train-photo] img { transform: scale(var(--photo-scale, 1)); transform-origin: var(--photo-origin, 50% 50%); }
[data-train-photo="big-boy"] { --photo-scale: 1.55; --photo-origin: 49% 55%; }
[data-train-photo="tender"] { --photo-scale: 1.5; }
[data-train-photo="no-70"] { --photo-scale: 1.5; }
[data-train-photo="steam-train"] { --photo-scale: 1.55; }
[data-train-photo="katie"] { --photo-scale: 1.18; --photo-origin: 52% 95%; }
.train-card-visual.legacy-art { background: var(--surface); }
.train-card-body { display: flex; flex-direction: column; flex: 1; padding: 22px 0 0; border-bottom: 1px solid var(--rule); }
.train-kind { margin: 0 0 10px; text-transform: uppercase; }
.train-card h3 { margin: 0 0 12px; font-size: clamp(25px, 2.7vw, 38px); line-height: 1.15; font-weight: 400; letter-spacing: -.035em; }
.train-card-description { max-width: 49ch; margin: 0 0 16px; color: var(--muted); font-size: 16px; line-height: 1.6; }
.train-card-action { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin-top: auto; min-height: 55px; padding-bottom: 10px; font-size: 14px; }
.train-card-arrow { width: 38px; height: 38px; display: grid; place-items: center; flex-shrink: 0; border: 1px solid var(--rule); border-radius: 50%; transition: background 180ms, color 180ms, border-color 180ms; }
.train-card-arrow svg { width: 17px; height: 17px; }
.train-card:focus-visible { outline-offset: 7px; }
.train-card:focus-visible .train-card-arrow { background: var(--brand); border-color: var(--brand); color: #fff; }
.train-card:active { opacity: .82; }
.category-image-note { max-width: 80ch; margin: 28px 0 0; }
.category-guide { background: var(--story-paper); color: var(--story-ink); padding-block: clamp(48px, 7vw, 100px); scroll-margin-top: 140px; }
.category-guide .category-kicker { color: var(--story-muted); }
.category-guide .category-section-heading { margin-bottom: 40px; }
.category-guide .category-section-heading h2 { max-width: 13ch; }
.category-guide-intro { max-width: 34ch; margin: 0; color: var(--story-muted); font-size: 17px; line-height: 1.6; }
.category-decisions { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 38px; padding-bottom: 44px; }
.category-decisions article { border-top: 1px solid var(--story-rule); padding-top: 20px; }
.category-decisions h3 { margin: 0 0 14px; font-size: 24px; font-weight: 400; line-height: 1.2; letter-spacing: -.03em; }
.category-decisions p { margin: 0; color: var(--story-muted); font-size: 15px; line-height: 1.7; }
.category-decisions a, .category-faq a { text-decoration: underline; text-underline-offset: 4px; }
.category-page .model-tool { margin-bottom: 0; }
.category-page .model-tool-note { font-size: 12px; }
.category-page .model-tool-kicker { font-size: 11px; }
.category-page .category-studio { grid-template-columns: 1fr 1.12fr; gap: clamp(28px, 4vw, 64px); padding-block: 36px; }
/* Same Laser Studio card as /projects/laser-cutting/, scoped to this section. */
.category-studio .browser-tool-card { position: relative; isolation: isolate; display: flex; flex-direction: column; justify-content: flex-end; min-width: 0; height: clamp(340px, 30vw, 430px); overflow: hidden; border: 1px solid var(--rule); border-radius: 22px; background: radial-gradient(ellipse 80% 90% at 80% 10%, #53504a, transparent 85%), linear-gradient(160deg, #363636, #242424); color: #fff; transition: border-color 180ms; }
.category-studio .browser-tool-card::after { content: ''; position: absolute; z-index: -1; inset: 0; pointer-events: none; background: linear-gradient(180deg, #00000020 0%, transparent 30%, #16161636 48%, #161616ed 100%); }
.category-studio .browser-tool-parts { position: absolute; z-index: -2; top: -2%; right: -1%; width: 57%; height: 83%; object-fit: contain; transition: transform 350ms cubic-bezier(.2, .7, .2, 1); }
.category-studio .browser-tool-top { position: absolute; inset: 20px 20px auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.category-studio .browser-tool-icon { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid #ffffff26; border-radius: 12px; background: #20202099; color: #f5f5f5; }
.category-studio .browser-tool-icon svg { width: 20px; height: 20px; }
.category-studio .browser-tool-status { padding: 6px 10px; border: 1px solid #ffffff26; border-radius: 20px; background: #202020c9; color: #e1e1e1; font-size: 11px; line-height: 1.5; }
.category-studio .browser-tool-copy { padding: 28px 88px 28px 28px; }
.category-studio .browser-tool-copy h3 { margin: 0; font-size: clamp(27px, 2.5vw, 36px); font-weight: 500; line-height: 1.15; letter-spacing: -.035em; }
.category-studio .browser-tool-copy p { max-width: 30ch; margin: 9px 0 0; color: #dedede; font-size: 14px; line-height: 1.6; }
.category-studio .browser-tool-copy > span { display: block; margin-top: 16px; color: #c5c5c5; font-size: 11px; line-height: 1.6; }
.category-studio .browser-tool-arrow { position: absolute; right: 28px; bottom: 28px; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--brand); color: #fff; }
.category-studio .browser-tool-arrow svg { width: 20px; height: 20px; transition: transform 180ms; }
.category-studio .browser-tool-card:focus-visible { outline: 2px solid var(--focus); outline-offset: 5px; }
.category-faq { display: grid; grid-template-columns: .8fr 1.2fr; gap: 60px; padding-block: 76px; }
.category-faq h2 { margin: 0; font-size: clamp(32px, 3.5vw, 50px); font-weight: 400; line-height: 1.08; letter-spacing: -.04em; }
.category-faq details { border-top: 1px solid var(--rule); }
.category-faq details:last-child { border-bottom: 1px solid var(--rule); }
.category-faq summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 74px; padding-block: 18px; cursor: pointer; list-style: none; font-size: 18px; line-height: 1.4; }
.category-faq summary::-webkit-details-marker { display: none; }
.category-faq summary::after { content: '+'; font: 24px/1 'Geist Mono', monospace; color: var(--muted); }
.category-faq details[open] summary::after { content: '−'; }
.category-faq details p { max-width: 59ch; margin: 0; padding: 0 28px 24px 0; font-size: 16px; line-height: 1.7; color: var(--muted); }
.category-back { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; border-top: 1px solid var(--rule); padding: 28px 0 60px; }
.category-back a { min-height: 44px; display: inline-flex; align-items: center; gap: 12px; font-size: 14px; }
.category-back svg { width: 18px; height: 18px; }
@media (hover: hover) {
  .category-studio .browser-tool-card:hover { border-color: var(--focus); }
  .category-studio .browser-tool-card:hover .browser-tool-parts { transform: translateY(-4px) rotate(-2deg); }
  .category-studio .browser-tool-card:hover .browser-tool-arrow svg { transform: translate(2px, -2px); }
  .train-card:hover .train-card-arrow { background: var(--brand); border-color: var(--brand); color: #fff; }
  .category-photo-caption a:hover, .category-back a:hover { text-decoration: underline; text-underline-offset: 5px; }
}
@media (max-width: 1000px) {
  .category-hero { grid-template-columns: .85fr 1.15fr; gap: 26px; }
  .category-hero h1 { font-size: 6.8vw; }
  .category-decisions { gap: 25px; }
  .category-faq { gap: 36px; }
}
@media (max-width: 900px) {
  .category-studio .browser-tool-card { height: 340px; }
  .category-studio .browser-tool-copy { padding: 24px 72px 24px 24px; }
  .category-studio .browser-tool-copy h3 { font-size: 27px; }
  .category-studio .browser-tool-arrow { right: 20px; bottom: 24px; }
}
@media (max-width: 600px) {
  .category-studio .browser-tool-card { border-radius: 18px; }
  .category-studio .browser-tool-copy h3 { font-size: 30px; }
  .category-studio .browser-tool-top { inset: 16px 16px auto; }
}
@media (max-width: 760px) {
  .category-page .category-studio { grid-template-columns: 1fr; gap: 24px; }
  .category-hero { display: flex; flex-direction: column; align-items: stretch; padding-block: 12px 36px; gap: 0; }
  .category-hero-copy { display: contents; }
  .category-hero .category-kicker { order: 0; }
  .category-hero h1 { order: 1; }
  .category-hero figure { order: 2; margin-bottom: 24px; }
  .category-hero .category-deck { order: 3; }
  .category-hero .model-actions { order: 4; }
  .category-hero .category-digital-note { order: 5; }
  .category-hero h1 { font-size: clamp(53px, 10vw, 76px); }
  .category-kicker { margin-bottom: 20px; }
  .category-deck { max-width: 40ch; }
  .category-photo-caption { font-size: 10px; }
  .category-section-heading { align-items: start; flex-direction: column; gap: 16px; margin-bottom: 26px; }
  .category-collection { padding-block: 34px 45px; scroll-margin-top: 130px; }
  .train-grid { gap: 36px 22px; }
  .train-card h3 { font-size: 25px; }
  .train-card-description { font-size: 15px; }
  .category-decisions { grid-template-columns: 1fr; gap: 26px; }
  .category-guide-intro { max-width: 43ch; }
  .category-faq { grid-template-columns: 1fr; gap: 28px; padding-block: 48px; }
  .category-back { padding-bottom: 36px; }
}
@media (max-width: 540px) {
  .train-grid { grid-template-columns: 1fr; }
  .category-hero h1 { font-size: 14vw; }
  .category-hero .model-inline-link { font-size: 13px; }
  .category-photo-caption { display: block; }
  .category-photo-caption a { display: flex; width: fit-content; margin-top: 4px; }
  .train-card-body { padding-top: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  .category-page *, .category-page *::before, .category-page *::after { scroll-behavior: auto !important; transition: none !important; }
}