/* XRAY — reading-room identity. See DA.md. */
:root {
  --light: #e3e8e7;
  --light-2: #eef2f1;
  --ink: #111415;
  --ink-2: #56605f;
  --rule: #c2cac9;
  --film: #060809;
  --film-ink: #d6e8ea;
  --film-edge: #7d8a8b;
  --wax: #d93c25;
  --sans: "Archivo", "Arial Narrow", system-ui, sans-serif;
  --mono: "Fragment Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --gutter: clamp(16px, 4vw, 48px);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --light: #0d1011; --light-2: #131718; --ink: #d8dedd; --ink-2: #8a9493; --rule: #262c2d;
    --film: #000; --wax: #ff5a3c; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --light: #0d1011; --light-2: #131718; --ink: #d8dedd; --ink-2: #8a9493; --rule: #262c2d;
  --film: #000; --wax: #ff5a3c; color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--light); color: var(--ink);
  font: 400 16px/1.5 var(--sans); font-stretch: 100%;
  overflow-x: hidden;
}
a { color: inherit; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--wax); }
::selection { background: var(--ink); color: var(--light); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- frame ---------- */
.wrap { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 var(--gutter); }
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding-top: 22px; padding-bottom: 22px; border-bottom: 1px solid var(--rule);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.marker {
  /* lead side-marker, like the L/R letters on a real radiograph */
  display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 4px;
  background: var(--ink); color: var(--light); font: 800 19px/1 var(--sans); font-stretch: 75%;
}
.brand b { font: 800 22px/1 var(--sans); font-stretch: 62%; letter-spacing: .14em; }
.top nav { display: flex; gap: 22px; font: 600 13px/1 var(--sans); font-stretch: 75%; letter-spacing: .12em; text-transform: uppercase; }
.top nav a { text-decoration: none; }
.top nav a[aria-current] { text-decoration: underline; }

.label { font: 600 11px/1.2 var(--sans); font-stretch: 75%; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-2); }
.mono { font-family: var(--mono); }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(24px, 4vw, 64px); padding-top: clamp(32px, 6vw, 80px); padding-bottom: 56px; align-items: start; }
.hero h1 {
  margin: 0 0 22px; font: 800 clamp(48px, 7.4vw, 104px)/.86 var(--sans); font-stretch: 62%;
  letter-spacing: -.01em; text-transform: uppercase;
}
.hero h1 em { font-style: normal; color: var(--ink-2); }
.lede { max-width: 34em; margin: 0 0 30px; font-size: 18px; line-height: 1.5; }
.lede strong { font-weight: 600; }

.expose { border: 1.5px solid var(--ink); background: var(--light-2); }
.expose label { display: block; padding: 9px 12px 0; }
.expose .row { display: flex; }
.expose input {
  flex: 1; min-width: 0; border: 0; background: transparent; color: var(--ink);
  padding: 6px 12px 12px; font: 400 15px/1.4 var(--mono); outline: none;
}
.expose input::placeholder { color: var(--ink-2); opacity: .7; }
.expose button {
  border: 0; border-left: 1.5px solid var(--ink); background: var(--ink); color: var(--light); cursor: pointer;
  padding: 0 22px; font: 700 15px/1 var(--sans); font-stretch: 75%; letter-spacing: .14em; text-transform: uppercase;
}
.expose button:hover { background: var(--wax); border-color: var(--wax); }
.expose:focus-within { outline: 2px solid var(--wax); outline-offset: 3px; }
.hint { margin: 10px 0 0; font: 400 12px/1.5 var(--mono); color: var(--ink-2); }
.hint button { all: unset; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.hint button:hover { color: var(--wax); }

/* ---------- plates ---------- */
.lightbox { position: relative; padding: 18px; background: var(--light-2); border: 1px solid var(--rule); }
.plate {
  position: relative; background: var(--film); color: var(--film-ink); overflow: hidden;
  border-radius: 2px; box-shadow: 0 1px 0 rgba(0,0,0,.25);
}
.plate canvas { display: block; width: 100%; height: auto; }
.plate svg.wax { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.wax path { fill: none; stroke: var(--wax); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.wax text { fill: var(--wax); font: 800 22px var(--sans); font-stretch: 62%; }
.clip { position: absolute; top: 6px; left: 50%; width: 64px; height: 16px; margin-left: -32px; background: var(--ink-2); border-radius: 2px; opacity: .55; z-index: 2; }
.plate-caption { display: flex; justify-content: space-between; gap: 12px; margin-top: 10px; font: 400 12px/1.4 var(--mono); color: var(--ink-2); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 12px; font: 400 12px/1.4 var(--mono); color: var(--ink-2); }
.legend i { display: inline-block; width: 22px; height: 0; margin-right: 6px; vertical-align: middle; border-top: 3px solid var(--ink); }
.legend .l-creator i { border-color: var(--ink); }
.legend .l-linked i { border-color: var(--ink); border-top-style: double; border-top-width: 4px; }
.legend .l-block0 i { border-color: var(--ink-2); }
.legend .l-crowd i { border-color: var(--rule); }
.legend .l-wax i { border-color: var(--wax); }

/* ---------- sections ---------- */
section.band { border-top: 1px solid var(--rule); padding: 48px 0 56px; }
.band-head { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 24px; margin-bottom: 30px; align-items: end; }
.band-head h2 { margin: 0; font: 800 clamp(30px, 4vw, 46px)/.95 var(--sans); font-stretch: 62%; text-transform: uppercase; }
.band-head p { margin: 0; max-width: 40em; color: var(--ink-2); }

.cases { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.case { display: block; text-decoration: none; }
.case .lightbox { padding: 10px; transition: border-color .15s; }
.case:hover .lightbox { border-color: var(--ink); }
.case h3 { margin: 14px 0 4px; font: 700 20px/1.1 var(--sans); font-stretch: 75%; }
.case p { margin: 0; font-size: 14px; color: var(--ink-2); }
.case .tag { margin-top: 10px; }
.case:hover h3 { color: var(--wax); }

table.signals { width: 100%; border-collapse: collapse; font-size: 15px; }
.signals th { text-align: left; padding: 0 12px 10px 0; border-bottom: 1.5px solid var(--ink); }
.signals td { padding: 13px 16px 13px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
.signals td:first-child { font-weight: 600; width: 28%; }
.signals td:last-child { width: 110px; padding-right: 0; }

.stamp {
  display: inline-block; padding: 2px 6px 1px; border: 1.5px solid var(--ink);
  font: 700 10.5px/1.3 var(--sans); font-stretch: 75%; letter-spacing: .14em; text-transform: uppercase;
}
.stamp.sure { background: var(--ink); color: var(--light); }
.stamp.probable { border-style: dashed; }

.patient { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(24px, 4vw, 64px); align-items: start; }
.patient p { max-width: 36em; }
.facts { margin: 22px 0 0; display: grid; grid-template-columns: auto 1fr; gap: 8px 20px; font: 400 14px/1.45 var(--mono); }
.facts dt { color: var(--ink-2); }
.facts dd { margin: 0; overflow-wrap: anywhere; }

footer { border-top: 1px solid var(--rule); padding: 26px 0 40px; font: 400 12px/1.6 var(--mono); color: var(--ink-2); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }

/* ---------- report page ---------- */
.request { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); border: 1.5px solid var(--ink); margin: 32px 0 22px; background: var(--light-2); }
.request > div { padding: 9px 12px 11px; border-right: 1px solid var(--rule); min-width: 0; }
.request > div:last-child { border-right: 0; }
.request .v { margin-top: 4px; font: 400 14px/1.35 var(--mono); overflow-wrap: anywhere; }
.request .v.big { font: 800 24px/1 var(--sans); font-stretch: 62%; text-transform: uppercase; }

.report { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(24px, 4vw, 56px); padding: 34px 0 60px; }
.report h2 { margin: 0 0 14px; font: 700 13px/1 var(--sans); font-stretch: 75%; letter-spacing: .2em; text-transform: uppercase; padding-bottom: 10px; border-bottom: 1.5px solid var(--ink); }
.report section + section { margin-top: 38px; }
ol.findings { list-style: none; margin: 0; padding: 0; counter-reset: f; }
.findings li { position: relative; padding: 14px 0 15px 44px; border-bottom: 1px solid var(--rule); counter-increment: f; }
.findings li::before { content: counter(f); position: absolute; left: 0; top: 11px; font: 800 26px/1 var(--sans); font-stretch: 62%; color: var(--ink-2); }
.findings li.alert::before { color: var(--wax); }
.findings h3 { margin: 0 0 4px; font: 600 17px/1.3 var(--sans); }
.findings p { margin: 6px 0 0; font: 400 14px/1.55 var(--mono); color: var(--ink-2); }
.impression { margin: 0; font: 400 16px/1.6 var(--mono); }
.impression p { margin: 0 0 10px; }
dl.measure { margin: 0; display: grid; grid-template-columns: minmax(0, 1fr) auto; font: 400 13.5px/1.4 var(--mono); }
.measure dt, .measure dd { margin: 0; padding: 7px 0; border-bottom: 1px solid var(--rule); }
.measure dt { color: var(--ink-2); padding-right: 12px; }
.measure dd { text-align: right; }
.measure .group { grid-column: 1 / -1; padding-top: 18px; border-bottom: 0; }
table.wallets { width: 100%; border-collapse: collapse; font: 400 12.5px/1.35 var(--mono); }
.wallets th { text-align: left; font: 600 10.5px/1 var(--sans); font-stretch: 75%; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); padding: 0 8px 8px 0; border-bottom: 1px solid var(--ink); }
.wallets td { padding: 6px 8px 6px 0; border-bottom: 1px solid var(--rule); white-space: nowrap; }
.wallets td.n { text-align: right; }
.wallets .role-creator, .wallets .role-linked, .wallets .role-known { font-weight: 700; }
.wallets .pos { color: var(--wax); }
.scroll-x { overflow-x: auto; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.btn {
  display: inline-block; border: 1.5px solid var(--ink); background: transparent; color: var(--ink); cursor: pointer; text-decoration: none;
  padding: 8px 12px 7px; font: 700 12px/1 var(--sans); font-stretch: 75%; letter-spacing: .14em; text-transform: uppercase;
}
.btn:hover { background: var(--ink); color: var(--light); }
.note { font: 400 12.5px/1.6 var(--mono); color: var(--ink-2); }

.exposing { padding: 18px 20px; font: 400 13px/1.7 var(--mono); color: var(--film-ink); min-height: 220px; position: absolute; inset: 0; }
.exposing .line { opacity: .55; }
.exposing .line:last-child { opacity: 1; }
.exposing .line:last-child::after { content: "▍"; animation: blink 1s steps(1) infinite; margin-left: 2px; }
.scan { position: absolute; top: 0; bottom: 0; width: 2px; background: var(--film-ink); opacity: .35; box-shadow: 0 0 18px 6px rgba(214,232,234,.18); animation: scan 2.6s ease-in-out infinite alternate; }
@keyframes scan { from { left: 0; } to { left: calc(100% - 2px); } }
@keyframes blink { 50% { opacity: 0; } }
.error-box { padding: 28px 22px; font: 400 15px/1.6 var(--mono); color: var(--film-ink); }
.error-box b { color: var(--wax); font-weight: 400; }

/* method page */
.prose { max-width: 46em; padding: 40px 0 70px; }
.prose h1 { font: 800 clamp(44px, 6vw, 80px)/.9 var(--sans); font-stretch: 62%; text-transform: uppercase; margin: 0 0 24px; }
.prose h2 { font: 700 13px/1 var(--sans); font-stretch: 75%; letter-spacing: .2em; text-transform: uppercase; margin: 44px 0 12px; padding-bottom: 10px; border-bottom: 1.5px solid var(--ink); }
.prose p, .prose li { font-size: 16.5px; }
.prose code { font: 400 14px var(--mono); background: var(--light-2); padding: 1px 4px; }
.prose dl dt { font-weight: 600; margin-top: 16px; }
.prose dl dd { margin: 4px 0 0; color: var(--ink-2); }

@media (prefers-reduced-motion: reduce) { .scan, .exposing .line:last-child::after { animation: none; } }

@media (max-width: 900px) {
  .hero, .patient, .report, .band-head { grid-template-columns: minmax(0, 1fr); }
  .cases { grid-template-columns: minmax(0, 1fr); }
  .request { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .request > div { border-bottom: 1px solid var(--rule); }
  .request > div:nth-child(2n) { border-right: 0; }
}
@media (max-width: 560px) {
  .top nav { gap: 14px; }
  .expose .row { flex-direction: column; }
  .lightbox { padding: 10px; }
  .expose button { border-left: 0; border-top: 1.5px solid var(--ink); padding: 14px; }
  .signals td:first-child { width: auto; }
  .signals thead { display: none; }
  .signals tr { display: grid; grid-template-columns: 1fr auto; border-bottom: 1px solid var(--rule); padding: 12px 0; }
  .signals td { border: 0; padding: 2px 0; }
  .signals td:nth-child(2) { grid-column: 1 / -1; grid-row: 2; color: var(--ink-2); font-size: 14px; }
  .signals td:last-child { width: auto; grid-row: 1; grid-column: 2; }
}

/* develop: the plate comes up from the bath */
.plate canvas.develop { animation: develop 1.6s cubic-bezier(.2,.7,.2,1) both; }
@keyframes develop { from { filter: brightness(.15) contrast(.4); } 40% { filter: brightness(.6) contrast(.8); } to { filter: none; } }
@media (prefers-reduced-motion: reduce) { .plate canvas.develop { animation: none; } }
.plate.unexposed { aspect-ratio: 16 / 8; display: grid; place-items: center; }
.unexposed-txt { font: 600 12px/1 var(--sans); font-stretch: 75%; letter-spacing: .3em; color: #5e6b6c; }