/* Layout: clinical reference handbook. Sticky contents rail on desktop, single reading column, audience lens reveals depth layers. */
:root {
  --bg: #F3F6F7;
  --surface: #FFFFFF;
  --ink: #15222C;
  --muted: #586874;
  --line: #D6DEE3;
  --accent: #1D5C87;
  --accent-soft: #E3EEF5;
  --clin: #2F6B4F;
  --clin-soft: #E5F1EA;
  --vac: #8A5A12;
  --vac-soft: #F6EDDD;
  --peek: #D8C9A3; --peek-edge: #9C8757; --ti: #A9B4BC; --ti-edge: #66737D; --pmma: #CFE6F2; --pmma-edge: #6FA3C0; --pe: #F1EEE6; --pe-edge: #A59F8E; --pe-dot: #C9C2AE; --ha: #EDE7DA; --ha-dot: #C2B497; --warn: #A3361F; --warn-soft: #F8E7E2;
  --font-display: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-body: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --step--1: .84rem; --step-0: 1rem; --step-1: 1.2rem; --step-2: 1.5rem; --step-3: 2rem; --step-4: clamp(2.4rem, 6vw, 3.6rem);
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  --bg: #0E151A; --surface: #151F27; --ink: #E4ECF1; --muted: #93A3AE; --line: #2A3842;
  --accent: #74B4E0; --accent-soft: #1A2D3B; --clin: #7FC4A0; --clin-soft: #17291F; --vac: #E1B46A; --vac-soft: #2C2416; --peek: #8C7B55; --peek-edge: #C4B184; --ti: #6C7883; --ti-edge: #AAB6C0; --pmma: #2C4D60; --pmma-edge: #7FB6D4; --pe: #4A4740; --pe-edge: #9A9484; --pe-dot: #6C6759; --ha: #514A3E; --ha-dot: #7E7360; --warn: #F08B72; --warn-soft: #34201B;
  color-scheme: dark; } }
:root[data-theme="dark"] {
  --bg: #0E151A; --surface: #151F27; --ink: #E4ECF1; --muted: #93A3AE; --line: #2A3842;
  --accent: #74B4E0; --accent-soft: #1A2D3B; --clin: #7FC4A0; --clin-soft: #17291F; --vac: #E1B46A; --vac-soft: #2C2416; --peek: #8C7B55; --peek-edge: #C4B184; --ti: #6C7883; --ti-edge: #AAB6C0; --pmma: #2C4D60; --pmma-edge: #7FB6D4; --pe: #4A4740; --pe-edge: #9A9484; --pe-dot: #6C6759; --ha: #514A3E; --ha-dot: #7E7360; --warn: #F08B72; --warn-soft: #34201B;
  color-scheme: dark; }

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font-family: var(--font-body); font-size: var(--step-0); line-height: 1.6; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; line-height: 1.15; margin: 0; }
h2 { font-size: var(--step-3); font-weight: 600; }
h3 { font-size: var(--step-1); font-weight: 600; }
p { margin: 0; }
.eyebrow { font-family: var(--font-mono); font-size: var(--step--1); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
sup.c a { font-family: var(--font-mono); font-size: .72em; text-decoration: none; padding: 0 1px; }
sup.c a:hover { text-decoration: underline; }

.wrap { max-width: 1180px; margin: 0 auto; padding-inline: 20px; padding-block: 0 64px; }

/* hero */
.hero { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 32px; align-items: center; padding-block: 48px 32px; border-bottom: 1px solid var(--line); }
.hero h1 { font-size: var(--step-4); font-weight: 700; letter-spacing: -.01em; }
.hero .lede { font-size: var(--step-1); color: var(--muted); max-width: 34em; margin-top: 16px; }
.hero figure { margin: 0; }
.hero svg { width: 100%; height: auto; max-width: 440px; display: block; margin-inline: auto; }
.hero figcaption { font-size: var(--step--1); color: var(--muted); text-align: center; margin-top: 8px; }

/* audience lens */
.lens { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: var(--bg); border-bottom: 1px solid var(--line); padding-block: 10px; }
.lens-inner { max-width: 1180px; margin: 0 auto; padding-inline: 20px; display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
.lens-label { font-size: var(--step--1); color: var(--muted); }
.seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--surface); }
.seg button { font: 500 var(--step--1)/1 var(--font-body); color: var(--ink); background: transparent; border: 0; padding: 9px 14px; cursor: pointer; border-right: 1px solid var(--line); }
.seg button:last-child { border-right: 0; }
.seg button[aria-pressed="true"] { background: var(--accent); color: var(--surface); }
.lens-note { font-size: var(--step--1); color: var(--muted); }

/* body layout */
.layout { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 48px; padding-top: 32px; }
.toc { position: sticky; top: 72px; align-self: start; font-size: var(--step--1); }
.toc ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; counter-reset: t; }
.toc a { display: block; padding: 5px 10px; border-left: 2px solid var(--line); color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--ink); border-color: var(--accent); }
main { min-width: 0; display: grid; gap: 64px; }
section { display: grid; gap: 18px; scroll-margin-top: 72px; }
.prose { max-width: 68ch; display: grid; gap: 14px; }

/* layered blocks */
.layer { border-radius: 8px; padding: 16px 18px; display: grid; gap: 10px; max-width: 68ch; }
.layer .tag { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 500; }
.layer.clin { background: var(--clin-soft); border-left: 3px solid var(--clin); }
.layer.clin .tag { color: var(--clin); }
.layer.vac { background: var(--vac-soft); border-left: 3px solid var(--vac); }
.layer.vac .tag { color: var(--vac); }
.layer ul { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; }
body[data-aud="patient"] .clin, body[data-aud="patient"] .vac { display: none; }
body[data-aud="clinician"] .vac { display: none; }
body[data-aud="vac"] .clin { display: none; }

/* steps */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; max-width: 68ch; counter-reset: s; }
.steps li { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 14px; padding-bottom: 18px; position: relative; }
.steps li::before { counter-increment: s; content: counter(s); font-family: var(--font-mono); font-weight: 500; width: 30px; height: 30px; border-radius: 50%; border: 1.5px solid var(--accent); color: var(--accent); display: grid; place-items: center; font-size: .85rem; background: var(--bg); z-index: 1; }
.steps li::after { content: ""; position: absolute; left: 15px; top: 30px; bottom: 0; width: 1.5px; background: var(--line); }
.steps li:last-child::after { display: none; }
.steps strong { display: block; }

/* materials */
.mat-grid { display: grid; gap: 20px; }
.mat { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 22px; display: grid; gap: 14px; scroll-margin-top: 72px; }
.mat-head { display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: baseline; justify-content: space-between; }
.mat-head h3 { font-size: var(--step-2); }
.formats { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: .76rem; font-weight: 500; padding: 3px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); white-space: nowrap; }
.mat .what { max-width: 68ch; }
.pc { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.pc h4 { margin: 0 0 6px; font-size: var(--step--1); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 600; }
.pc ul { margin: 0; padding-left: 1.1em; display: grid; gap: 4px; font-size: .95rem; }
.ctx { background: transparent; border-style: dashed; }

/* table */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; min-width: 760px; font-size: .9rem; }
th, td { text-align: left; vertical-align: top; padding: 11px 14px; border-bottom: 1px solid var(--line); }
thead th { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); font-weight: 500; background: var(--bg); }
tbody th { font-weight: 600; white-space: nowrap; }
tbody tr:last-child > * { border-bottom: 0; }
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* stat row */
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; max-width: 760px; }
.stat { border-top: 2px solid var(--accent); padding-top: 10px; }
.stat .v { font-family: var(--font-display); font-size: var(--step-3); font-weight: 600; font-variant-numeric: tabular-nums; }
.stat .l { font-size: var(--step--1); color: var(--muted); }

/* findings */
.findings { display: grid; gap: 12px; max-width: 76ch; }
.finding { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.finding .k { font-family: var(--font-mono); font-size: .78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; padding-top: 3px; }

.qs { margin: 0; padding-left: 1.2em; display: grid; gap: 8px; max-width: 68ch; }
dl.gloss { display: grid; grid-template-columns: minmax(0, 200px) minmax(0, 1fr); gap: 10px 20px; margin: 0; max-width: 820px; }
dl.gloss dt { font-weight: 600; }
dl.gloss dd { margin: 0; color: var(--muted); }

ol.refs { margin: 0; padding-left: 1.6em; display: grid; gap: 8px; font-size: .88rem; max-width: 90ch; }
ol.refs li { scroll-margin-top: 72px; }
ol.refs li:target { background: var(--accent-soft); border-radius: 4px; }
.doi { font-family: var(--font-mono); font-size: .8rem; word-break: break-all; }

.callout { border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; max-width: 68ch; background: var(--surface); }

/* patient journey */
.phases { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.phase { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 18px; display: grid; gap: 12px; align-content: start; }
.phase-head { display: grid; gap: 2px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.phase-k { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.phase ul { margin: 0; padding-left: 1.05em; display: grid; gap: 8px; font-size: .93rem; }
.journey-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.tips, .helmet { display: grid; gap: 12px; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.checks li { position: relative; padding-left: 26px; }
.checks li::before { content: ""; position: absolute; left: 2px; top: .38em; width: 12px; height: 7px; border-left: 2px solid var(--clin); border-bottom: 2px solid var(--clin); transform: rotate(-45deg); }
.helmet { background: var(--accent-soft); border-radius: 10px; padding: 18px; }
.helmet ul { margin: 0; padding-left: 1.1em; display: grid; gap: 6px; font-size: .93rem; }
.helmet-svg { width: 140px; height: auto; }
.callout.warn { border-color: var(--warn); background: var(--warn-soft); display: grid; gap: 6px; }
.callout.warn h3 { color: var(--warn); font-size: var(--step-0); font-family: var(--font-body); }

/* manufacturers */
.fine { font-size: .88rem; color: var(--muted); }
.filter { display: flex; flex-wrap: wrap; gap: 8px; }
.filter button { font: 500 .82rem/1 var(--font-body); padding: 8px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; }
.filter button[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.makers { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 290px), 1fr)); gap: 16px; }
.maker { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 18px; display: grid; grid-template-rows: auto auto auto 1fr auto; gap: 10px; }
.ill { display: flex; gap: 6px; background: var(--bg); border-radius: 8px; padding: 12px 10px 8px; justify-content: center; }
.ill figure { margin: 0; flex: 1 1 0; min-width: 0; max-width: 130px; text-align: center; }
.ill svg { width: 100%; height: auto; display: block; }
.ill figcaption { font-family: var(--font-mono); font-size: .68rem; color: var(--muted); margin-top: 4px; }
.maker h3 { font-size: var(--step-1); display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: baseline; }
.prod { font-weight: 600; color: var(--accent); font-size: .93rem; }
.maker dl { margin: 0; display: grid; gap: 6px; font-size: .88rem; align-content: start; }
.maker dt { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.maker dd { margin: 0 0 4px; }
.links { display: flex; flex-wrap: wrap; gap: 6px 14px; padding-top: 10px; border-top: 1px solid var(--line); font-size: .86rem; font-weight: 600; }
.links a::after { content: " \2197"; font-weight: 400; }

/* recovery supplies */
.disclosure { border: 1px solid var(--line); border-left: 3px solid var(--vac); border-radius: 8px; padding: 14px 16px; display: grid; gap: 8px; max-width: 76ch; font-size: .92rem; background: var(--surface); }
.supplies { display: grid; gap: 28px; }
.sup-cat { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr); gap: 20px; padding-top: 22px; border-top: 1px solid var(--line); }
.sup-cat:first-child { border-top: 0; padding-top: 4px; }
.sup-info { display: grid; gap: 10px; align-content: start; }
.sup-info h3 { font-size: var(--step-2); }
.sup-info .lf-h { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.sup-info ul { margin: 0; padding-left: 1.1em; display: grid; gap: 5px; font-size: .92rem; }
.sup-caution { font-size: .88rem; background: var(--vac-soft); border-radius: 6px; padding: 8px 10px; }
.sup-items { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 230px), 1fr)); gap: 12px; align-content: start; }
.item { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px; display: grid; grid-template-rows: auto auto 1fr auto; gap: 8px; }
.item h4 { margin: 0; font-size: 1rem; font-weight: 600; }
.item .gf { font-size: .82rem; color: var(--muted); }
.item p.why { margin: 0; font-size: .9rem; }
.item .badge { justify-self: start; font-family: var(--font-mono); font-size: .66rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); border: 1px dashed var(--muted); border-radius: 999px; padding: 2px 8px; }
.item.draft { border-style: dashed; }
.buy { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 9px 12px; border-radius: 8px; background: var(--accent); color: var(--surface); font-weight: 600; font-size: .88rem; text-decoration: none; }
.buy:hover { filter: brightness(1.08); }
.buy[aria-disabled="true"] { background: var(--line); color: var(--muted); cursor: default; }
.buy-note { font-size: .74rem; color: var(--muted); text-align: center; }
.sup-empty { font-size: .9rem; color: var(--muted); border: 1px dashed var(--line); border-radius: 10px; padding: 14px; }

/* site bar shared across pages */
.sitebar { border-bottom: 1px solid var(--line); background: var(--surface); }
.sitebar-inner { max-width: 1180px; margin: 0 auto; padding: 12px 20px; display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: center; justify-content: space-between; }
.brand { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; color: var(--ink); text-decoration: none; }
.sitelinks { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: .9rem; }
.sitelinks a { color: var(--muted); text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent; }
.sitelinks a:hover { color: var(--ink); }
.sitelinks a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
.footlinks { display: flex; flex-wrap: wrap; gap: 6px 18px; }
a.more { font-weight: 600; }
a.more::after { content: " \2192"; }

footer { border-top: 1px solid var(--line); margin-top: 64px; padding-top: 24px; font-size: var(--step--1); color: var(--muted); display: grid; gap: 8px; max-width: 90ch; }

@media (max-width: 900px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .toc { display: none; }
  .hero { grid-template-columns: minmax(0, 1fr); padding-block: 32px 24px; }
  .hero figure { order: -1; }
  .hero svg { max-width: 320px; }
  .phases { grid-template-columns: minmax(0, 1fr); }
  .journey-grid { grid-template-columns: minmax(0, 1fr); }
  .sup-cat { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 560px) {
  .pc { grid-template-columns: minmax(0, 1fr); }
  .stats { grid-template-columns: minmax(0, 1fr); }
  .finding { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  dl.gloss { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  dl.gloss dd { margin-bottom: 10px; }
}
@media (prefers-reduced-motion: no-preference) {
  .implant { animation: seat 1.6s ease-out .3s both; }
  @keyframes seat { from { transform: translate(26px, -22px); } to { transform: translate(0, 0); } }
}

/* article and secondary pages */
.article { max-width: 760px; margin: 0 auto; padding-inline: 20px; padding-block: 40px 64px; display: grid; gap: 40px; }
.article-head { display: grid; gap: 12px; }
.article-head h1 { font-size: clamp(2rem, 5vw, 2.8rem); font-weight: 700; letter-spacing: -.01em; }
.article-head .lede { font-size: var(--step-1); color: var(--muted); }
.meta { font-size: var(--step--1); color: var(--muted); }
.article section { display: grid; gap: 14px; }
.article p, .article li { max-width: 68ch; }
.article ul, .article ol:not(.refs) { margin: 0; padding-left: 1.2em; display: grid; gap: 8px; }
.toc-inline { border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; background: var(--surface); font-size: .92rem; }
.toc-inline ol { margin: 6px 0 0; }
.keybox { border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 8px; padding: 14px 16px; display: grid; gap: 8px; }
.keybox ul { gap: 6px; }
.guide-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.guide-list li { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 18px; display: grid; gap: 6px; max-width: none; }
.guide-list a.title { font-family: var(--font-display); font-size: var(--step-1); font-weight: 600; text-decoration: none; }
.guide-list a.title:hover { text-decoration: underline; }
.soon { color: var(--muted); font-size: .92rem; }
.article .sup-items { grid-template-columns: repeat(auto-fill, minmax(min(100%, 220px), 1fr)); }
.article footer { margin-top: 0; }