/* Medical Imaging Explained: layout and components. Tokens live in tokens.css. */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--font-body); font-size: var(--step-0); line-height: 1.62; text-rendering: optimizeLegibility; overflow-wrap: break-word; }
img, svg { max-width: 100%; }
a { color: var(--accent-ink); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--accent); text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 3px; }
.wrap { width: min(100% - 2 * var(--gutter), var(--page-max)); margin-inline: auto; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip { position: absolute; left: 0.5rem; top: -4rem; background: var(--ink); color: var(--paper); padding: 0.6rem 1rem; border-radius: var(--radius-s); z-index: 50; }
.skip:focus { top: 0.5rem; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.005em; text-wrap: balance; }

/* ---- svg drawing system (film ground, pale line, copper-light accent) ---- */
svg .g { fill: var(--film); }
svg .sh { fill: var(--film-2); stroke: var(--film-line); stroke-opacity: 0.35; stroke-width: 1; }
svg .l, svg .a { fill: none; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
svg .l { stroke: var(--film-line); }
svg .a { stroke: var(--film-acc); }
svg .af { fill: var(--film-acc); }
svg .lf { fill: var(--film-line); }
svg .dim { opacity: 0.45; }
.thumb { display: block; width: 100%; height: auto; aspect-ratio: 16 / 10; border-radius: 6px; }
.thumb--lg { border-radius: 10px; }
.lightbox { display: block; width: 100%; height: auto; border-radius: 12px; }
.mark { width: 1.9rem; height: 1.9rem; flex: none; }
.mk-bg { fill: var(--film); }
.mk-l { fill: none; stroke: var(--film-line); stroke-width: 1.8; }
.mk-d { opacity: 0.5; }
.mk-a { fill: var(--film-acc); }

/* ---- top bar and finder ---- */
.bar { position: sticky; top: 0; z-index: 20; background: color-mix(in oklab, var(--paper) 94%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--rule); }
.bar__in { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; min-height: 3.5rem; }
.bar__name { display: flex; align-items: center; gap: 0.55rem; font-family: var(--font-display); font-size: 1rem; line-height: 1.15; color: var(--ink); text-decoration: none; min-width: 0; }
.bar__name span { overflow-wrap: anywhere; }
.find { display: inline-flex; align-items: center; gap: 0.5rem; min-height: 2.75rem; padding: 0.4rem 0.95rem; border: 1px solid var(--rule); border-radius: 999px; background: var(--paper-2); color: var(--ink); text-decoration: none; font-weight: 500; font-size: 0.95rem; transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease); }
.find:hover { border-color: var(--accent); background: var(--paper); color: var(--ink); }
.find__more { display: none; }
.find kbd { display: none; font: inherit; font-size: 0.8rem; padding: 0 0.4rem; border: 1px solid var(--rule); border-radius: 5px; color: var(--muted); }
@media (min-width: 40rem) { .find__more { display: inline; } .find kbd { display: inline; } .bar__name { font-size: 1.15rem; } }

dialog.finder { width: min(40rem, 100% - 1.5rem); max-height: min(80dvh, 44rem); padding: 0; border: 1px solid var(--rule); border-radius: 16px; background: var(--paper); color: var(--ink); overflow: hidden; }
dialog.finder[open] { display: flex; flex-direction: column; }
dialog.finder::backdrop { background: oklch(20% 0.02 255 / 0.5); }
.finder__top { display: flex; gap: 0.6rem; padding: 0.8rem; border-bottom: 1px solid var(--rule); background: var(--paper-2); }
.finder__top input { flex: 1; min-width: 0; font: inherit; padding: 0.65rem 0.85rem; border: 1px solid var(--rule); border-radius: var(--radius-s); background: var(--paper); color: var(--ink); }
.finder__x { font: inherit; font-weight: 500; min-height: 2.75rem; padding: 0 1rem; border: 1px solid var(--rule); border-radius: var(--radius-s); background: var(--paper); color: var(--ink); cursor: pointer; }
.finder__x:hover { border-color: var(--accent); }
.finder__body { overflow-y: auto; padding: 0.4rem 0.8rem 1rem; }
.finder__grp h2 { font-family: var(--font-body); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-ink); margin: 1.1rem 0 0.3rem; }
.finder__grp ul { list-style: none; margin: 0; padding: 0; }
.finder__grp li[hidden], .finder__grp[hidden] { display: none; }
.finder__grp a { display: grid; grid-template-columns: 4.5rem minmax(0, 1fr); gap: 0.8rem; align-items: center; padding: 0.45rem; border-radius: var(--radius-s); text-decoration: none; color: var(--ink); min-height: 2.75rem; }
.finder__grp a:hover, .finder__grp a:focus-visible { background: var(--accent-soft); }
.finder__grp b { font-weight: 600; display: block; line-height: 1.25; }
.finder__grp small { display: none; color: var(--muted); font-size: 0.85rem; line-height: 1.35; }
@media (min-width: 40rem) { .finder__grp small { display: block; } }
.finder__t { border-radius: 4px; }
.finder__none { color: var(--muted); padding: 1rem 0.45rem; }

/* ---- home ---- */
.lead { display: grid; grid-template-columns: minmax(0, 1fr); gap: 2rem; padding-block: 2rem 0.5rem; align-items: center; }
.lead__k { margin: 0 0 1rem; font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-ink); }
.lead h1 { font-size: var(--step-4); line-height: 1.08; margin: 0 0 1.1rem; }
.lead__lede { font-size: var(--step-1); line-height: 1.55; color: var(--ink-2); margin: 0 0 1.4rem; max-width: 40rem; }
.jump { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.jump a { display: inline-flex; gap: 0.45rem; align-items: center; min-height: 2.75rem; padding: 0.35rem 0.9rem; border: 1px solid var(--rule); border-radius: 999px; text-decoration: none; color: var(--ink); font-weight: 500; font-size: 0.92rem; background: var(--paper); transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease); }
.jump a:hover { border-color: var(--accent); background: var(--accent-soft); color: var(--ink); }
.jump b { color: var(--accent-ink); font-variant-numeric: tabular-nums; }
@media (min-width: 60rem) { .lead { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: 3.5rem; padding-top: 3.5rem; } }

.rail { margin-top: 3.5rem; }
.rail__head { display: grid; grid-template-columns: auto minmax(0, 1fr); column-gap: 1rem; row-gap: 0.4rem; align-items: start; padding-bottom: 0.9rem; border-bottom: 1px solid var(--rule); }
.rail__n { margin: 0; font-family: var(--font-display); font-size: 1.3rem; line-height: 1.1; color: var(--accent); font-variant-numeric: tabular-nums; padding-top: 0.15rem; }
.rail__head h2 { margin: 0; font-size: var(--step-2); line-height: 1.15; }
.rail__head p:not(.rail__n) { margin: 0.3rem 0 0; color: var(--ink-2); max-width: 44rem; font-size: 0.97rem; }
.rail__all { grid-column: 2; justify-self: start; font-weight: 600; font-size: 0.92rem; text-decoration: none; padding-block: 0.4rem; }
.rail__all:hover { text-decoration: underline; }
@media (min-width: 40rem) { .rail__head { grid-template-columns: auto minmax(0, 1fr) auto; align-items: end; } .rail__all { grid-column: 3; justify-self: end; } }

.cards { list-style: none; margin: 1.2rem 0 0; padding: 0 0 0.6rem; display: grid; grid-auto-flow: column; grid-auto-columns: min(80%, 16.5rem); gap: 1rem; overflow-x: auto; scroll-snap-type: x proximity; overscroll-behavior-x: contain; }
.tile { scroll-snap-align: start; min-width: 0; }
.tile a { display: grid; gap: 0.4rem; align-content: start; height: 100%; padding: 0.7rem 0.7rem 0.9rem; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--paper); color: var(--ink); text-decoration: none; transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease); }
.tile a:hover { border-color: var(--accent); background: var(--accent-soft); color: var(--ink); }
.tile__k { margin-top: 0.4rem; font-size: 0.74rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-ink); }
.tile__h { font-family: var(--font-display); font-weight: 500; font-size: 1.2rem; line-height: 1.2; }
.tile__s { font-size: 0.92rem; line-height: 1.45; color: var(--ink-2); }
.tile--big .tile__h { font-size: 1.4rem; }
@media (min-width: 48rem) {
  .cards { grid-auto-flow: row; grid-auto-columns: auto; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); overflow: visible; padding-bottom: 0; }
  .cards--big { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 64rem) { .cards--big { grid-template-columns: minmax(0, 1.35fr) repeat(2, minmax(0, 1fr)); } .cards--big .tile:first-child .tile__h { font-size: 1.65rem; } }

.tablewrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: var(--radius); margin: 1.4rem 0; background: var(--paper); }
.data { width: 100%; min-width: 34rem; border-collapse: collapse; font-size: 0.95rem; }
.data caption { caption-side: top; text-align: left; padding: 0.9rem 1rem 0.5rem; color: var(--muted); font-size: 0.86rem; line-height: 1.45; }
.data th, .data td { text-align: left; vertical-align: top; padding: 0.7rem 1rem; border-top: 1px solid var(--rule-2); line-height: 1.45; }
.data thead th { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--accent-ink); background: var(--paper-2); border-top: 1px solid var(--rule); }
.data tbody th { font-weight: 600; }

.about-band { margin-top: 3.5rem; padding: 1.6rem; border-radius: 16px; background: var(--paper-2); }
.about-band h2 { margin: 0 0 0.6rem; font-size: var(--step-2); }
.about-band p { margin: 0 0 0.8rem; max-width: 46rem; }
.about-band__links { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0.4rem 0 0 !important; }
.about-band__links a { display: inline-flex; align-items: center; min-height: 2.75rem; padding: 0.3rem 0.95rem; border: 1px solid var(--rule); border-radius: 999px; background: var(--paper); text-decoration: none; font-weight: 500; }
.about-band__links a:hover { border-color: var(--accent); }

/* ---- article pages ---- */
.crumbs { padding-top: 1.2rem; font-size: 0.86rem; color: var(--muted); }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.crumbs li + li::before { content: "/"; margin-right: 0.4rem; color: var(--rule); }
.ahead { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.4rem; padding-block: 1.2rem 1.4rem; align-items: center; }
.ahead__k { margin: 0 0 0.7rem; font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-ink); }
.ahead h1 { font-size: var(--step-3); line-height: 1.1; margin: 0 0 0.9rem; }
.ahead__dek { font-size: var(--step-1); line-height: 1.5; color: var(--ink-2); margin: 0 0 1rem; max-width: 44rem; }
.ahead__meta { display: flex; flex-wrap: wrap; gap: 0.2rem 1.1rem; margin: 0; font-size: 0.85rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.ahead__fig { margin: 0; order: -1; max-width: 22rem; }
@media (min-width: 56rem) { .ahead { grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr); gap: 3rem; } .ahead__fig { order: 0; max-width: none; } }
.chips ul { list-style: none; margin: 0.4rem 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chips a { display: inline-flex; align-items: center; min-height: 2.5rem; padding: 0.25rem 0.8rem; border: 1px solid var(--rule); border-radius: 999px; font-size: 0.86rem; font-weight: 500; text-decoration: none; color: var(--ink-2); transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease); }
.chips a:hover { border-color: var(--accent); background: var(--accent-soft); color: var(--ink); }
.agrid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 2rem; margin-top: 1.6rem; }
.family { display: none; }
@media (min-width: 64rem) {
  .agrid { grid-template-columns: minmax(0, 44rem) 16rem; gap: 4rem; justify-content: start; }
  .family { display: block; position: sticky; top: 5rem; align-self: start; max-height: calc(100dvh - 6.5rem); overflow-y: auto; padding: 1rem 1rem 0.6rem; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--paper); }
  .family__t { margin: 0 0 0.2rem; font-family: var(--font-display); font-size: 1.05rem; }
  .family h3 { margin: 0.9rem 0 0.2rem; font-family: var(--font-body); font-weight: 600; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-ink); }
  .family ul { list-style: none; margin: 0; padding: 0; }
  .family a { display: block; padding: 0.28rem 0; font-size: 0.88rem; line-height: 1.35; color: var(--ink-2); text-decoration: none; }
  .family a:hover { color: var(--accent); text-decoration: underline; }
  .family a[aria-current="page"] { color: var(--accent-ink); font-weight: 600; }
}

.prose > :first-child { margin-top: 0; }
.prose p { margin: 0 0 1.1em; }
.prose > p:first-child { font-size: 1.12rem; color: var(--ink); }
.prose h2 { font-size: var(--step-2); line-height: 1.2; margin: 2.6em 0 0.6em; }
.prose h2::before { content: ""; display: block; width: 2rem; height: 3px; background: var(--accent); margin-bottom: 0.7rem; }
.prose h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.05rem; line-height: 1.35; margin: 1.6em 0 0.4em; }
.prose ul, .prose ol { margin: 0 0 1.2em; padding-left: 1.3rem; }
.prose li { margin: 0.35em 0; padding-left: 0.2rem; }
.prose li::marker { color: var(--accent); }
.prose strong { font-weight: 600; }
.prose blockquote { margin: 1.4rem 0; padding: 1rem 1.2rem; background: var(--paper-2); border-radius: var(--radius); }
.prose blockquote p { margin: 0; font-family: var(--font-display); font-size: 1.12rem; line-height: 1.45; }
.prose abbr { text-decoration-thickness: 1px; }
.faq { margin-top: 3rem; }
.faq h2 { margin-top: 0; }
.faq-item { padding: 1rem 0; border-top: 1px solid var(--rule); }
.faq-item:last-child { border-bottom: 1px solid var(--rule); }
.faq-item h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.faq-item p { margin: 0; color: var(--ink-2); }
.sources { margin-top: 2.6rem; padding: 1.2rem 1.4rem; background: var(--paper-2); border-radius: var(--radius); font-size: 0.9rem; line-height: 1.55; }
.sources h2 { margin: 0 0 0.6rem; font-size: 1.15rem; }
.sources h2::before { display: none; }
.sources ul { margin: 0; padding-left: 1.1rem; }
.sources li { margin: 0.55em 0; overflow-wrap: anywhere; }
.neigh { margin-top: 4rem; }
.neigh h2 { margin: 0; font-size: var(--step-2); }
.lost { padding-block: 4rem; max-width: 40rem; }
.lost h1 { font-size: var(--step-3); margin: 0 0 1rem; }

/* ---- contact form ---- */
.mailform { display: grid; gap: 1rem; margin: 1.4rem 0 2rem; padding: 1.2rem; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--paper); max-width: 34rem; }
.mailform label { display: grid; gap: 0.35rem; font-weight: 500; font-size: 0.95rem; }
.mailform input, .mailform select, .mailform textarea { font: inherit; font-weight: 400; width: 100%; padding: 0.65rem 0.8rem; border: 1px solid var(--rule); border-radius: var(--radius-s); background: var(--paper); color: var(--ink); }
.mailform textarea { min-height: 8rem; resize: vertical; }
.btn { justify-self: start; font: inherit; font-weight: 600; min-height: 2.75rem; padding: 0.6rem 1.4rem; border: 0; border-radius: 999px; background: var(--accent); color: var(--paper); cursor: pointer; transition: background-color var(--dur) var(--ease); }
.btn:hover { background: var(--accent-ink); }
.mailform small { color: var(--muted); line-height: 1.45; }

/* ---- footer: ledger ---- */
.foot { margin-top: 5rem; border-top: 3px solid var(--ink); background: var(--paper-2); padding-block: 2rem 2.4rem; }
.foot__brand { margin: 0 0 1rem; font-family: var(--font-display); font-size: 1.35rem; }
.ledger { margin: 0; }
.ledger__row { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0.2rem; padding: 0.75rem 0; border-top: 1px solid var(--rule); }
.ledger dt { font-size: 0.74rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-ink); padding-top: 0.3rem; }
.ledger dd { margin: 0; display: flex; flex-wrap: wrap; gap: 0.1rem 1.3rem; }
.ledger dd a { display: inline-block; padding-block: 0.3rem; font-size: 0.95rem; color: var(--ink); text-decoration: none; }
.ledger dd a:hover { color: var(--accent); text-decoration: underline; }
.foot__notice { margin-top: 1.4rem; padding: 1rem 1.2rem; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--paper); font-size: 0.88rem; line-height: 1.55; color: var(--ink-2); }
.foot__notice p { margin: 0; max-width: 60rem; }
@media (min-width: 48rem) { .ledger__row { grid-template-columns: 11rem minmax(0, 1fr); gap: 1.5rem; } }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }
@media print { .bar, .family, .chips, .finder, .neigh { display: none; } }