/* =========================================================================
   DOABLE - "cool clinical"
   Cool off-white paper, clinical teal (the trust anchor, kept), coral (the
   hands of hands-on therapy - warmth without brown), sage, ochre for the
   evidence scale. Cool neutrals convey calm/credibility for health content.
   ========================================================================= */

:root {
  /* Brand colours */
  --paper:        #EAEEF4;
  --paper-2:      #DFE6EF;
  --card:         #FFFFFF;
  --ink:          #17212E;
  --ink-soft:     #45566A;
  --ink-faint:    #5F6C7A;
  --line:         #D7DFE9;
  --line-soft:    #E4E9F0;
  --scrim:        rgba(14,22,33,.5);   /* cool slate overlay veil (was warm brown) */

  --teal:         #156B66;
  --teal-deep:    #0E4E4A;
  --teal-tint:    #DCEBE6;
  --clay:         #E4633F;   /* vivid coral - fills, buttons, accents */
  --clay-deep:    #B4441F;   /* deep coral - text/labels (AA on light) */
  --clay-soft:    #EE7B58;
  --clay-tint:    #FBE4DC;
  --sage:         #6E8B7E;
  --sage-deep:    #3F6152;   /* text on sage-tint (AA) */
  --sage-tint:    #E0E7DF;
  --ochre:        #C68A1E;
  --ochre-deep:   #7E5810;   /* text on ochre-tint (AA) */
  --ochre-tint:   #F2E4C2;
  --plum:         #6E4A63;
  --plum-deep:    #573A4E;   /* text on plum tint (AA) */

  /* Semantic */
  --bg:           var(--paper);
  --bg-alt:       var(--paper-2);
  --surface:      var(--card);
  --accent:       var(--teal);
  --accent-2:     var(--clay);

  /* Type */
  --serif: "Fraunces", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans:  "Hanken Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono:  "Spline Sans Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  /* Geometry */
  --radius:   14px;
  --radius-sm: 9px;
  --radius-lg: 22px;
  --radius-xs: 6px;
  --maxw: 1180px;
  --nav-w: 268px;
  --topbar-h: 64px;

  --shadow-1: 0 1px 2px rgba(22,33,46,.06), 0 4px 14px rgba(22,33,46,.07);
  --shadow-2: 0 8px 30px rgba(18,28,42,.12);
  --shadow-pop: 0 18px 50px rgba(15,25,40,.22);

  --ease: cubic-bezier(.22,.61,.36,1);
  /* Doable: motion tokens (F30) - use these for all new motion */
  --dur-1: .18s; --dur-2: .28s; --dur-3: .5s;

  /* Type scale (F34) - consolidated static sizes by ROLE. rem is ROOT-relative (16px);
     body's 16.5px does not change rem. Fluid clamps + 1rem+ sizes intentionally excluded. */
  --text-2xs:  .7rem;   /* mono micro-labels (was .58–.66) - deliberate legibility rise */
  --text-xs:   .72rem;  /* small mono labels / meta (was .68–.72) */
  --text-sm:   .82rem;  /* captions, notes, chips (was .76–.85) */
  --text-md:   .9rem;   /* dense body / table / field (was .88–.92) */
  --text-card: 1.12rem; /* card-title tier (itemcard h2 / acc-title / cc-name / welcome strong) */
  --track-label:   .08em; /* one tracked-label tracking (was .02–.12em band) */
  --track-eyebrow: .16em; /* eyebrow tracking (was .16/.18em) */
}

[data-theme="dark"] {
  --paper:   #0E1621;
  --paper-2: #14202D;
  --card:    #182533;
  --ink:     #E7EDF4;
  --ink-soft:#B4C0CE;
  --ink-faint:#8494A4;
  --line:    #2A3745;
  --line-soft:#212D3A;
  --scrim:   rgba(0,0,0,.6);

  --teal:      #5FB8AE;
  --teal-deep: #8FD4CB;
  --teal-tint: #17302C;
  --clay:      #F0805C;   /* vivid coral - fills on dark */
  --clay-deep: #F4A588;   /* light coral - text on dark (AA) */
  --clay-soft: #F2916F;
  --clay-tint: #301C15;
  --sage:      #9DB6A8;
  --sage-deep: #9DB6A8;   /* dark: light text already passes on dark tint */
  --sage-tint: #1E2A25;
  --ochre:     #DDB05A;
  --ochre-deep:#DDB05A;
  --ochre-tint:#2A2416;
  --plum:      #B894AB;
  --plum-deep: #C6A8B9;

  --shadow-1: 0 1px 2px rgba(0,0,0,.4), 0 6px 18px rgba(0,0,0,.35);
  --shadow-2: 0 10px 34px rgba(0,0,0,.5);
  --shadow-pop: 0 20px 60px rgba(0,0,0,.6);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* Doable route choreography (F33): View Transitions, progressive enhancement.
   #main gets its own snapshot group so topbar/sidenav never flash; the crossfade is
   deliberately pure opacity - .page's fade-up supplies the rise (no double movement).
   JS side is gated on prefersReducedMotion(); this block is the CSS belt-and-braces. */
#main { view-transition-name: main-content; }
::view-transition-old(main-content) { animation: vt-fade-out var(--dur-2) var(--ease) both; }
::view-transition-new(main-content) { animation: vt-fade-in var(--dur-2) var(--ease) both; }
@keyframes vt-fade-out { to { opacity: 0; } }
@keyframes vt-fade-in { from { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}

/* Craft details: quiet scrollbars + brand text selection */
.sidenav { scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
.sidenav::-webkit-scrollbar { width: 8px; }
.sidenav::-webkit-scrollbar-thumb { background: var(--line); border-radius: 99px; }
.sidenav::-webkit-scrollbar-track { background: transparent; }
::selection { background: var(--teal); color: #F4F6FA; }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  font-size: var(--font-base, 16.5px);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Atmospheric wash (subtle, cool) - grain kept to a whisper for a cleaner surface */
body::before {
  content: "";
  position: fixed; inset: 0;
  background:
    radial-gradient(1100px 600px at 88% -8%, color-mix(in srgb, var(--teal) 12%, transparent), transparent 60%),
    radial-gradient(900px 520px at -6% 8%, color-mix(in srgb, var(--clay) 6%, transparent), transparent 58%);
  pointer-events: none;
  z-index: 0;
}
.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: .12;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.42'/%3E%3C/svg%3E");
}
[data-theme="dark"] .grain { mix-blend-mode: screen; opacity: .08; }

html[data-fontsize="lg"] { --font-base: 18.5px; }
html[data-fontsize="xl"] { --font-base: 20.5px; }

::selection { background: color-mix(in srgb, var(--clay) 36%, transparent); }

a { color: var(--teal-deep); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--clay-deep); }
/* F3: inline glossary links inside condition drawers - dotted underline signals "definition available" */
.gloss { text-decoration: underline dotted; text-decoration-thickness: 1px; text-underline-offset: 3px; cursor: pointer; }
.gloss:hover, .gloss:focus-visible { text-decoration-style: solid; }

.skip-link {
  position: fixed; left: 12px; top: -60px; z-index: 200;
  background: var(--teal); color: #fff; padding: 10px 16px; border-radius: var(--radius-sm);
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; color:#fff; }

:focus-visible { outline: 3px solid var(--clay); outline-offset: 2px; border-radius: 4px; }
/* card-shaped buttons: the focus ring must follow the card's own (larger) radius, and give press feedback */
.card.lift:focus-visible, .pathway:focus-visible, .feature-card:focus-visible, .itemcard:focus-visible { border-radius: inherit; }
.card.lift:active, .pathway:active, .feature-card:active, .itemcard:active { transform: translateY(-1px); }

/* ============================= TOP BAR ============================= */
.topbar {
  position: sticky; top: 0; z-index: 60;
  height: var(--topbar-h);
  display: flex; align-items: center; gap: 14px;
  padding: 0 clamp(14px, 3vw, 26px);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(12px) saturate(1.2);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); margin-right: auto; }
.brand-mark { color: var(--teal); display: grid; place-items: center; flex: none; }
.brand-text strong { font-family: var(--serif); font-weight: 600; font-size: 1.22rem; letter-spacing: -.01em; display: block; line-height: 1; }
.brand-text em { font-style: normal; font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); text-transform: uppercase; color: var(--ink-faint); white-space: nowrap; }
/* 601–999px: not enough room for the tagline beside the tools row - without this it wraps
   and the 72px brand block clips inside the 64px topbar. Title stays; tagline is a luxury. */
@media (max-width: 999px) { .brand-text em { display: none; } }

.topbar-tools { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  display: inline-grid; place-items: center;
  width: 42px; height: 42px; border-radius: var(--radius-sm);
  background: transparent; border: 1px solid transparent; color: var(--ink-soft);
  cursor: pointer; font-family: var(--mono); font-size: var(--text-xs);
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s;
}
.icon-btn:hover { background: var(--surface); border-color: var(--line); color: var(--ink); }

.search-trigger {
  display: flex; align-items: center; gap: 9px;
  height: 42px; padding: 0 14px; border-radius: var(--radius-sm);
  background: var(--surface); border: 1px solid var(--line); color: var(--ink-faint);
  cursor: pointer; font-family: var(--sans); font-size: var(--text-md);
  transition: border-color .18s, color .18s, box-shadow .18s;
}
.search-trigger:hover { border-color: var(--teal); color: var(--ink); box-shadow: var(--shadow-1); }
.search-trigger kbd {
  font-family: var(--mono); font-size: var(--text-xs); background: var(--bg-alt);
  border: 1px solid var(--line); border-radius: var(--radius-xs); padding: 1px 7px; color: var(--ink-faint);
}
.search-trigger span { display: none; }
@media (min-width: 560px) { .search-trigger span { display: inline; } }

.i-moon { display: none; }
[data-theme="dark"] .i-sun { display: none; }
[data-theme="dark"] .i-moon { display: block; }

.nav-toggle { display: inline-grid; }
@media (min-width: 1000px) { .nav-toggle { display: none; } }

/* ============================= SHELL / NAV ============================= */
.shell { position: relative; z-index: 2; display: block; }

.sidenav {
  position: fixed; top: var(--topbar-h); left: 0; bottom: 0; width: var(--nav-w);
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 92%, var(--teal) 2%);
  overflow-y: auto; z-index: 55;
  transition: transform .3s var(--ease);
}
.sidenav-inner { padding: 22px 16px 40px; }
.nav-eyebrow {
  font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-eyebrow); text-transform: uppercase;
  color: var(--ink-faint); margin: 22px 10px 8px;
}
.nav-eyebrow:first-child { margin-top: 4px; }
.nav-list { list-style: none; margin: 0; padding: 0; }
.nav-list a {
  display: flex; align-items: center; gap: 11px;
  padding: 9px 12px; border-radius: var(--radius-sm); text-decoration: none;
  color: var(--ink-soft); font-weight: 500; font-size: .94rem; line-height: 1.25;
  transition: background .15s, color .15s;
}
.nav-list a .ni { color: var(--sage); font-size: .85em; width: 16px; text-align: center; transition: color .15s; }
.nav-list a:hover { background: var(--surface); color: var(--ink); }
.nav-list a:hover .ni { color: var(--clay-deep); }
.nav-list a.active { background: var(--teal); color: #fff; box-shadow: var(--shadow-1); }
.nav-list a.active .ni { color: var(--ochre); }
[data-theme="dark"] .nav-list a.active { background: var(--teal-deep); color: var(--paper); }

.nav-foot { margin: 26px 10px 0; padding-top: 16px; border-top: 1px dashed var(--line); }
.nav-foot p { font-size: var(--text-sm); color: var(--ink-faint); line-height: 1.5; }

.scrim {
  position: fixed; inset: var(--topbar-h) 0 0 0; z-index: 50;
  background: var(--scrim); backdrop-filter: blur(2px);
}

@media (max-width: 999px) {
  .sidenav { transform: translateX(-100%); box-shadow: var(--shadow-2); width: min(86vw, 320px); }
  body.nav-open .sidenav { transform: translateX(0); }
}

/* ============================= VIEW / MAIN ============================= */
.view {
  margin-left: 0;
  padding: clamp(20px, 4vw, 52px) clamp(16px, 4vw, 56px) 120px;
  min-height: 70vh;
  max-width: calc(var(--maxw) + var(--nav-w));
}
@media (min-width: 1000px) {
  .view { margin-left: var(--nav-w); }
}
.view-loading {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 16px; min-height: 46vh; padding: 40px 0;
  font-family: var(--mono); font-size: var(--text-sm); letter-spacing: var(--track-label);
  text-transform: uppercase; color: var(--ink-faint); text-align: center;
}
/* F37: the open-book brand mark, drawing itself - PRM-safe (static/complete by default,
   the draw-on animation only runs under prefers-reduced-motion: no-preference). Reused for
   the start() failure state below (.start-error .loading-mark), unanimated there. */
.loading-mark { width: 48px; height: 48px; color: var(--ink); }
.loading-mark .lm-cover, .loading-mark .lm-spine { stroke-dasharray: 100; stroke-dashoffset: 0; }
@media (prefers-reduced-motion: no-preference) {
  .loading-mark .lm-cover { stroke-dashoffset: 100; animation: lm-draw 1.5s var(--ease) infinite; }
  .loading-mark .lm-spine { stroke-dashoffset: 100; animation: lm-draw .6s var(--ease) infinite; animation-delay: .95s; }
  @keyframes lm-draw { to { stroke-dashoffset: 0; } }
}
/* F37: branded error state when start() exhausts its retry cap (~3s) - same mark, static. */
.start-error {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; min-height: 46vh; padding: 40px 20px; text-align: center; max-width: 440px; margin: 0 auto;
}
.start-error .se-msg { font-family: var(--serif); font-size: 1.1rem; color: var(--ink); margin: 6px 0 0; }
.start-error .se-missing { font-size: var(--text-sm); color: var(--ink-faint); margin: 0; }
.start-error .se-missing code { font-family: var(--mono); font-size: var(--text-xs); background: var(--bg-alt); padding: 2px 6px; }
.start-error .btn { margin-top: 8px; }

/* page enter animation */
.page { animation: fade-up .5s var(--ease) both; max-width: var(--maxw); }
@keyframes fade-up { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.stagger > * { animation: fade-up .5s var(--ease) both; }
.stagger > *:nth-child(1){animation-delay:.02s}
.stagger > *:nth-child(2){animation-delay:.06s}
.stagger > *:nth-child(3){animation-delay:.10s}
.stagger > *:nth-child(4){animation-delay:.14s}
.stagger > *:nth-child(5){animation-delay:.18s}
.stagger > *:nth-child(6){animation-delay:.22s}
.stagger > *:nth-child(7){animation-delay:.26s}
.stagger > *:nth-child(8){animation-delay:.30s}

/* F38: per-SECTION scroll reveals (the other 13 routes; home keeps its own .stagger above).
   Base state is fully visible - `.reveal` is only ever added by app.js's wireReveals() to the
   handful of elements it is about to observe, so a no-JS / JS-error path never leaves content
   stuck invisible (same belt-and-braces spirit as the view-transition block earlier in this
   file). transition-delay per element is set inline by app.js (`--rdelay`), capped per batch
   there - this rule only supplies the motion + the "already revealed" end state. Opacity only
   (never display/visibility), translateY capped at 12px, so find-in-page/AT text and layout are
   unaffected either side of the reveal. */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--dur-2) var(--ease), transform var(--dur-2) var(--ease);
  transition-delay: var(--rdelay, 0s);
}
.reveal.revealed { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  /* Belt-and-braces: app.js already skips wireReveals()/never adds `.reveal` under PRM, so in
     practice this rule never has to fire - kept as a CSS-only backstop. */
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* ============================= TYPOGRAPHY ============================= */
.eyebrow {
  font-family: var(--mono); font-size: var(--text-xs); letter-spacing: var(--track-eyebrow); text-transform: uppercase;
  color: var(--clay-deep); margin: 0 0 14px; display: flex; align-items: center; gap: 10px;
}
/* F35: chapter identity - the dash + coord accent follow the nav group via #main[data-chapter].
   Accent text always uses the -deep variant (AA ≥4.5:1 both themes). Defaults = teal (ORIENTATION). */
#main { --chapter-accent: var(--teal); --chapter-accent-deep: var(--teal-deep); }
#main[data-chapter="framework"] { --chapter-accent: var(--plum);  --chapter-accent-deep: var(--plum-deep); }
#main[data-chapter="reference"] { --chapter-accent: var(--ochre); --chapter-accent-deep: var(--ochre-deep); }
#main[data-chapter="action"]    { --chapter-accent: var(--clay);  --chapter-accent-deep: var(--clay-deep); }
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--chapter-accent); display: inline-block; flex: none; }
/* Doable chapter coordinate (F31): "03 · THE FRAMEWORK" stamp, injected by stampCoord() */
.coord {
  font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); color: var(--chapter-accent-deep);
  border: 1px solid color-mix(in srgb, var(--chapter-accent) 32%, transparent); border-radius: 4px;
  padding: 2px 7px 1px; white-space: nowrap; flex: none;
}
/* F35 mobile: instead of hiding the stamp, drop the border/chip and keep just the "NN ·" prefix
   inline in the eyebrow (the group word is dropped) - reclaims chapter identity without a hero line. */
@media (max-width: 600px) {
  .coord { border: 0; border-radius: 0; padding: 0; }
  .coord .coord-grp { display: none; }
}

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 500; color: var(--ink); line-height: 1.12; letter-spacing: -.01em; }
/* Doable display cut (F30): Fraunces SOFT/WONK personality axes, display tier ONLY.
   WONK auto-substitutes only above opsz 18, so body/card text is never affected.
   NEVER add "wght"/"opsz" here - that would silently kill font-weight + auto optical sizing. */
.hero-title, .page-title { font-variation-settings: "SOFT" var(--display-soft, 24), "WONK" 1; }
.hero-title { --display-soft: 42; }
.page-title { font-size: clamp(2rem, 4.6vw, 3.3rem); font-weight: 480; margin: 0 0 .35em; }
.page-title em { font-style: italic; color: var(--teal); }
.lede { font-size: clamp(1.05rem, 1.9vw, 1.32rem); color: var(--ink-soft); max-width: 64ch; line-height: 1.55; margin: 0 0 8px; }
.section-head { font-size: clamp(1.5rem, 3vw, 2.05rem); margin: 0 0 .3em; }
h2 { font-size: 1.32rem; }
h3 { font-size: 1.08rem; }
h4 { font-size: 1rem; }

.prose p { margin: 0 0 1em; color: var(--ink-soft); max-width: 72ch; }
.prose strong { color: var(--ink); }

.divider { height: 1px; background: var(--line); border: 0; margin: clamp(34px,6vw,64px) 0; }
.kicker-row { display:flex; align-items: baseline; justify-content: space-between; gap: 18px; flex-wrap: wrap; margin-bottom: 22px; }

/* ============================= BUTTONS / CHIPS ============================= */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: var(--radius-sm); font-weight: 600; font-size: .95rem;
  cursor: pointer; border: 1px solid transparent; text-decoration: none; font-family: var(--sans);
  transition: transform .14s var(--ease), box-shadow .18s, background .18s, border-color .18s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--teal); color: #fff; box-shadow: var(--shadow-1); }
.btn-primary:hover { background: var(--teal-deep); color: #fff; box-shadow: var(--shadow-2); }
[data-theme="dark"] .btn-primary { color: var(--paper); }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal-deep); }
.btn-clay { background: var(--clay-deep); color:#fff; }
.btn-clay:hover { background: var(--clay); color: #fff; }
[data-theme="dark"] .btn-clay { background: var(--clay); color: var(--paper); }
[data-theme="dark"] .btn-clay:hover { background: var(--clay-soft); color: var(--paper); }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: var(--text-xs); letter-spacing: var(--track-label);
  padding: 4px 10px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink-soft); cursor: pointer; user-select: none;
  transition: all .15s var(--ease);
}
.chip:hover { border-color: var(--teal); color: var(--teal-deep); }
/* non-clickable chip: an assessment named in the drawer that isn't in the library yet */
.chip-static { cursor: default; color: var(--ink-faint); background: transparent; border-style: dashed; }
.chip-static:hover { border-color: var(--line); color: var(--ink-faint); }
.chip[aria-pressed="true"], .chip.active { background: var(--teal); color: #fff; border-color: var(--teal); }
[data-theme="dark"] .chip[aria-pressed="true"], [data-theme="dark"] .chip.active { color: var(--paper); }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 22px; }
.text-btn { font: inherit; color: var(--teal-deep); background: none; border: 0; padding: 0; text-decoration: underline; text-underline-offset: 2px; cursor: pointer; }
.text-btn:hover { color: var(--clay-deep); }
/* F18: on-this-page table of contents */
.page-toc { margin: 4px 0 28px; padding: 14px 18px; border: 1px solid var(--line); border-left: 3px solid var(--teal); border-radius: var(--radius-sm); background: var(--bg-alt); }
.page-toc .toc-label { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); color: var(--ink-faint); margin: 0 0 8px; }
.page-toc ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 20px; }
.page-toc li { margin: 0; }
.page-toc button { font: inherit; font-size: var(--text-md); background: none; border: 0; padding: 2px 0; color: var(--teal-deep); cursor: pointer; text-align: left; text-decoration: underline; text-underline-offset: 3px; text-decoration-color: color-mix(in srgb, var(--teal) 38%, transparent); }
.page-toc button:hover, .page-toc button:focus-visible { color: var(--clay-deep); text-decoration-color: currentColor; }

/* F4 - long-page navigation: sticky in-page filter/jump bar + floating back-to-top.
   z-index 40 keeps it below the topbar (60), sidenav (55) and search overlay (50). */
.sticky-jump {
  position: sticky; top: var(--topbar-h); z-index: 40;
  margin: 0 0 16px; padding: 12px 0;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px) saturate(1.15);
  border-bottom: 1px solid var(--line);
}
.back-to-top {
  position: fixed; right: clamp(14px, 3vw, 26px); bottom: clamp(14px, 3vw, 26px);
  z-index: 45; width: 46px; height: 46px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--teal); color: #fff; border: 1px solid transparent;
  box-shadow: var(--shadow-2); cursor: pointer;
  transition: transform .18s var(--ease), background .18s var(--ease);
}
.back-to-top:hover { background: var(--teal-deep); transform: translateY(-2px); }
@media (prefers-reduced-motion: reduce) {
  .back-to-top { transition: none; }
  .back-to-top:hover { transform: none; }
}
/* On narrow screens a wrapped sticky bar would eat the viewport (13 video categories = ~10
   rows). Switch to one horizontally-swipeable row so the pinned bar stays shallow. */
@media (max-width: 600px) {
  .sticky-jump {
    flex-wrap: nowrap; overflow-x: auto; overflow-y: hidden;
    -webkit-overflow-scrolling: touch; scrollbar-width: thin;
  }
  .sticky-jump .chip { flex: 0 0 auto; white-space: nowrap; }
}

.tag {
  display: inline-block; font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label);
  padding: 3px 8px; border-radius: var(--radius-xs); background: var(--bg-alt); color: var(--ink-faint);
  border: 1px solid var(--line-soft);
}
.tag.teal { background: var(--teal-tint); color: var(--teal-deep); border-color: transparent; }
.tag.clay { background: var(--clay-tint); color: var(--clay-deep); border-color: transparent; }
.tag.sage { background: var(--sage-tint); color: var(--sage-deep); border-color: transparent; }
.tag.ochre{ background: var(--ochre-tint); color: var(--ochre-deep); border-color: transparent; }
[data-theme="dark"] .tag.teal { color: var(--teal-deep); }

/* ============================= CARDS / GRIDS ============================= */
.grid { display: grid; gap: 18px; }
.g2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.g3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.g4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-1);
  position: relative; transition: transform .18s var(--ease), box-shadow .2s, border-color .2s;
}
.card.lift:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); border-color: color-mix(in srgb, var(--teal) 40%, var(--line)); }
.card.accent { border-left: 4px solid var(--clay); }
.card.accent-teal { border-left: 4px solid var(--teal); }
.card h2 { margin: 0 0 8px; }
.card .card-meta { font-family: var(--mono); font-size: var(--text-xs); letter-spacing: var(--track-label); color: var(--ink-faint); margin-bottom: 10px; }
.card p { margin: 0 0 10px; color: var(--ink-soft); font-size: .95rem; }
.card p:last-child { margin-bottom: 0; }

.feature-card {
  display: flex; flex-direction: column; gap: 12px; cursor: pointer;
  text-align: left; width: 100%; font: inherit; color: inherit;
}
.card-num { font-family: var(--mono); color: var(--clay-deep); font-size: var(--text-sm); letter-spacing: var(--track-label); }

/* numbered list blocks */
.numbered { display: grid; gap: 14px; counter-reset: step; }
.numbered .step { display: grid; grid-template-columns: 44px 1fr; gap: 16px; align-items: start; }
.numbered .step .n {
  counter-increment: step; width: 44px; height: 44px; border-radius: var(--radius-sm);
  display: grid; place-items: center; font-family: var(--serif); font-size: 1.2rem;
  background: var(--teal-tint); color: var(--teal-deep); border: 1px solid color-mix(in srgb,var(--teal) 25%, transparent);
}
.numbered .step .n::before { content: counter(step); }
.numbered .step h3 { margin: 4px 0 4px; }
.numbered .step p { margin: 0; color: var(--ink-soft); font-size: .95rem; }

/* definition rows */
.deflist { display: grid; gap: 0; }
.deflist .row { display: grid; grid-template-columns: minmax(140px, 220px) 1fr; gap: 18px; padding: 14px 0; border-top: 1px solid var(--line-soft); }
.deflist .row:last-child { border-bottom: 1px solid var(--line-soft); }
.deflist .row dt { font-weight: 700; color: var(--ink); }
.deflist .row dd { margin: 0; color: var(--ink-soft); }
@media (max-width: 560px){ .deflist .row { grid-template-columns: 1fr; gap: 4px; } }

/* callouts - F52: margin notes, not boxes. A colored rule in the margin is how a book
   marks an aside; no tinted fill, no radius, no icon chip. Tone lives in the rule color. */
.callout {
  border: 0; border-left: 3px solid var(--ink-faint);
  border-radius: 0; background: none;
  padding: 2px 0 2px 18px; margin: 22px 0;
  display: block;
}
.callout .ico { display: none; }
.callout.tip { border-left-color: var(--teal); }
.callout.warn { border-left-color: var(--clay); }
.callout.note { border-left-color: var(--ochre); }
.callout p { margin: 0; font-size: var(--text-md); color: var(--ink-soft); }
.callout strong { color: var(--ink); }

/* ============================= ACCORDION ============================= */
.accordion { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.acc-item + .acc-item { border-top: 1px solid var(--line); }
.acc-head {
  width: 100%; text-align: left; background: transparent; border: 0; cursor: pointer;
  padding: 18px 20px; display: flex; align-items: center; gap: 14px; font: inherit; color: var(--ink);
  transition: background .15s;
}
.acc-head:hover { background: var(--bg-alt); }
.acc-head .acc-title { font-family: var(--serif); font-size: var(--text-card); font-weight: 500; flex: 1; }
.acc-head .acc-sub { font-size: var(--text-sm); color: var(--ink-faint); font-family: var(--sans); }
.acc-head .caret { transition: transform var(--dur-1) var(--ease); color: var(--clay-deep); flex: none; }
.acc-head[aria-expanded="true"] .caret { transform: rotate(90deg); }
/* F39: disclosure body - CSS-only grid open animation (0fr→1fr) replaces the max-height:4000px hack
   (fixed-height hack animated arbitrary content at the wrong speed). PRM story below. */
.acc-body { display: grid; grid-template-rows: 0fr; overflow: hidden; transition: grid-template-rows var(--dur-2) var(--ease); }
.acc-body.open { grid-template-rows: 1fr; }
/* .acc-clip is the padding/border-free grid item (track-sizing) so 0fr collapses to a true 0;
   the visual padding + dashed rule live on the nested .inner, clipped by .acc-clip's overflow. */
.acc-body > .acc-clip { overflow: hidden; min-height: 0; }
.accordion .acc-body .inner { border-top: 1px dashed var(--line); padding: 16px 20px 22px; }
.acc-leader { display: none; }

/* F39: the foundations "More about…" trio, re-set from card-kit into book/index language -    no box, hairline-separated rows (like .idx-list), serif run-in title, mono hint on a right-
   aligned dot leader; expand/collapse reuses the shared .acc-body grid choreography above.
   Content + tab/ARIA semantics (button + aria-expanded panel) unchanged. */
.accordion.acc-idx { border: 0; border-radius: 0; background: none; overflow: visible; border-top: 2px solid var(--ink); }
.accordion.acc-idx .acc-head { align-items: baseline; gap: 10px; padding: 11px 4px 12px 2px; }
.accordion.acc-idx .acc-head:hover { background: var(--surface); }
.accordion.acc-idx .acc-title { font-family: var(--serif); font-weight: 600; font-size: 1.02rem; letter-spacing: -.01em; flex: 0 0 auto; }
.accordion.acc-idx .caret { order: -1; color: var(--ink-faint); }
.accordion.acc-idx .acc-leader { display: block; flex: 1 1 24px; min-width: 24px; border-bottom: 1px dotted var(--ink-faint); opacity: .55; transform: translateY(-.3em); }
.accordion.acc-idx .acc-sub { flex: none; font-family: var(--mono); font-size: var(--text-xs); letter-spacing: var(--track-label); color: var(--ink-faint); }
.accordion.acc-idx .acc-body .inner { border-top: 0; padding: 2px 4px 16px 14px; }
@media (max-width: 640px) {
  .accordion.acc-idx .acc-leader { display: none; }
  .accordion.acc-idx .acc-head { flex-wrap: wrap; }
  .accordion.acc-idx .acc-sub { flex-basis: 100%; }
}
/* F39: PRM - disclosure bodies + their caret snap open/closed with no motion */
@media (prefers-reduced-motion: reduce) {
  .acc-body { transition: none; }
  .acc-head .caret { transition: none; }
}

/* ============================= TABLES ============================= */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table.data { width: 100%; border-collapse: collapse; font-size: var(--text-md); font-variant-numeric: tabular-nums; min-width: 560px; }
table.data th, table.data td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
table.data thead th { font-family: var(--mono); font-size: var(--text-xs); letter-spacing: var(--track-label); color: var(--ink-faint); background: var(--bg-alt); position: sticky; top: 0; }
table.data tbody tr:hover { background: color-mix(in srgb, var(--teal) 6%, transparent); }
table.data td strong { color: var(--ink); }

/* ============================= HERO (home) ============================= */
.hero { position: relative; padding: clamp(8px,2vw,20px) 0 8px; }
.hero > :not(.hero-field) { position: relative; z-index: 1; }
.hero-title { font-size: clamp(2.4rem, 6.6vw, 4.7rem); font-weight: 420; line-height: 1.02; letter-spacing: -.02em; margin: 0 0 .3em; }
.hero-title .l1 { display:block; }
.hero-title em { font-style: italic; color: var(--teal); }
.hero-title .ul { color: var(--clay-deep); }
.hero-lede { font-size: clamp(1.1rem, 2.1vw, 1.45rem); color: var(--ink-soft); max-width: 60ch; margin: 0 0 26px; }
/* F6: plain-language functional subline (public mode replaces the poetic lede) */
.hero-sub { font-size: clamp(1.08rem, 2vw, 1.34rem); line-height: 1.5; color: var(--ink); font-weight: 500; max-width: 46ch; margin: 0 0 26px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
/* Doable contour field (F32): decorative topographic terrain, coordinate-pinned stats.
   aria-hidden; pointer-events none; hidden on small screens to protect the mobile fold. */
.hero-field {
  position: absolute; top: -26px; right: -46px; width: min(54%, 580px); z-index: 0;
  pointer-events: none; color: var(--teal); --hf-ring-op: .17;
}
html[data-theme="dark"] .hero-field { --hf-ring-op: .3; }
.hero-field .ring { fill: none; stroke: currentColor; stroke-width: 1; stroke-opacity: var(--hf-ring-op); }
.hero-field .ring-accent { fill: none; stroke: var(--clay); stroke-width: 1.2; stroke-opacity: .55; }
/* F44: everyday-object markers - stroke props inherit through the <use> boundary */
.hero-field .hf-obj {
  fill: none; stroke: currentColor; stroke-width: 2.3;
  stroke-linecap: round; stroke-linejoin: round; stroke-opacity: .62;
}
.hero-field .hf-leader { fill: none; stroke: var(--ink-faint); stroke-width: 1; stroke-dasharray: 2 4; stroke-opacity: .55; }
.hero-field .hf-label { font-family: var(--mono); font-size: 10.5px; letter-spacing: var(--track-label); fill: var(--ink-faint); }
.hero-field .hf-a { animation: hf-drift 46s var(--ease) infinite alternate; }
.hero-field .hf-b { animation: hf-drift 38s var(--ease) infinite alternate-reverse; }
@keyframes hf-drift { to { transform: translate(9px, -7px); } }
@media (max-width: 860px) { .hero-field { display: none; } }

.pathway-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); margin-top: 8px; }
.pathway {
  text-align: left; cursor: pointer; font: inherit; color: inherit;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 24px; display: flex; flex-direction: column; gap: 8px;
  transition: transform .2s var(--ease), box-shadow .2s, border-color .2s;
  position: relative; overflow: hidden;
}
.pathway::after { content: "→"; position: absolute; right: 22px; bottom: 18px; font-size: 1.3rem; color: var(--clay-deep); transition: transform .2s var(--ease); }
.pathway:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--teal); }
.pathway:hover::after { transform: translateX(5px); }
.pathway .pw-ico { font-size: 1.7rem; }
.pathway h2 { margin: 4px 0 2px; }
.pathway p { font-size: var(--text-md); color: var(--ink-soft); margin: 0; max-width: 34ch; }

/* F43: Doable composition - pathway hierarchy, Table of Plates, legend strip.
   Replaces the three stacked uniform grids (pathways / stat-band / feature-cards). */
/* F52: the primary pathway is a rule-bounded doorway (fig language), not a tinted card. */
.pathway-primary {
  display: flex; align-items: center; gap: 22px; width: 100%; text-align: left;
  font: inherit; color: inherit; cursor: pointer; position: relative;
  background: none; border: 0; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line);
  border-radius: 0; padding: 20px 8px 22px 2px;
  transition: background var(--dur-1) var(--ease);
}
.pathway-primary:hover { background: var(--surface); }
.pathway-primary:hover h2 { color: var(--teal-deep); }
.pathway-primary .pw-ico .fig-obj { width: 46px; height: 46px; margin: 0; }
.pathway-primary h2 { margin: 0 0 4px; font-size: 1.35rem; }
.pathway-primary p { margin: 0; font-size: .95rem; color: var(--ink-soft); max-width: 56ch; }
.pathway-primary .pp-arrow { margin-left: auto; font-size: 1.5rem; color: var(--teal-deep); flex: none; transition: transform var(--dur-1) var(--ease); }
.pathway-primary:hover .pp-arrow { transform: translateX(5px); }
.pathway-minis { display: grid; grid-template-columns: 1fr 1fr; gap: 0 26px; margin-top: 4px; }
.pathway-mini {
  display: flex; gap: 12px; align-items: flex-start; text-align: left; font: inherit;
  font-size: var(--text-md); color: var(--ink-soft); background: none; border: 0;
  border-bottom: 1px solid var(--line); padding: 13px 4px; cursor: pointer;
}
.pathway-mini strong { color: var(--ink); font-weight: 600; transition: color var(--dur-1); }
.pathway-mini .icn { display: none; }   /* F52: run-in rows carry themselves; no glyph chips */
.pathway-mini:hover strong, .pathway-mini:focus-visible strong { color: var(--teal-deep); }
@media (max-width: 700px) { .pathway-minis { grid-template-columns: 1fr; } }

.plates { display: grid; margin-top: 6px; }
.plate-row {
  display: flex; align-items: baseline; gap: 14px; width: 100%; text-align: left;
  font: inherit; color: inherit; background: none; border: 0; cursor: pointer;
  border-bottom: 1px solid var(--line); padding: 13px 6px;
  transition: background var(--dur-1) var(--ease);
}
.plate-row:first-child { border-top: 1px solid var(--line); }
.plate-row:hover, .plate-row:focus-visible { background: var(--bg-alt); }
.plate-row:hover .plate-title, .plate-row:focus-visible .plate-title { color: var(--teal-deep); }
.plate-no { font-family: var(--mono); font-size: var(--text-xs); color: var(--clay-deep); flex: none; width: 26px; }
.plate-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.plate-title { font-family: var(--serif); font-size: 1.12rem; font-weight: 500; color: var(--ink); transition: color var(--dur-1); }
.plate-desc { font-size: var(--text-sm); color: var(--ink-faint); }
.plate-lead { flex: 1; min-width: 24px; border-bottom: 1px dotted color-mix(in srgb, var(--ink) 30%, transparent); transform: translateY(-5px); }
.plate-ico { flex: none; color: var(--teal-deep); }
.plate-ico .icn { width: 15px; height: 15px; }
@media (max-width: 600px) { .plate-desc { display: none; } .plate-lead { min-width: 12px; } }

.legend-strip {
  display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 30px 0 0; padding: 12px 4px;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  font-size: var(--text-sm); color: var(--ink-faint);
}
.legend-strip b { font-family: var(--serif); font-size: 1.05rem; font-weight: 600; color: var(--teal-deep); margin-right: 3px; }

.coverage-grid { display: grid; gap: 18px; grid-template-columns: 1.45fr 1fr 1fr; }
.coverage-grid > :first-child { background: var(--teal-tint); }
@media (max-width: 800px) { .coverage-grid { grid-template-columns: 1fr; } }

/* F46: OT/PT/SLP overlap Venn (decorative; .venn-zones carries the content) */
.venn-wrap { display: grid; grid-template-columns: minmax(250px, 360px) 1fr; gap: 30px; align-items: center; margin-top: 14px; }
@media (max-width: 820px) { .venn-wrap { grid-template-columns: 1fr; } .venn { max-width: 340px; margin: 0 auto; } }
.venn { width: 100%; height: auto; }
.venn .v-circle { stroke-width: 1.4; stroke-opacity: .55; fill-opacity: .09; }
html[data-theme="dark"] .venn .v-circle { fill-opacity: .14; }
.venn .v-ot  { fill: var(--teal);  stroke: var(--teal); }
.venn .v-pt  { fill: var(--plum);  stroke: var(--plum); }
.venn .v-slp { fill: var(--ochre); stroke: var(--ochre); }
.venn .v-label { font-family: var(--sans); font-size: 15px; font-weight: 700; }
.venn .vl-ot  { fill: var(--teal-deep); }
.venn .vl-pt  { fill: var(--plum-deep); }
.venn .vl-slp { fill: var(--ochre-deep); }
.venn-zones { display: grid; }
.vz { border-bottom: 1px solid var(--line); padding: 11px 0; }
.vz:first-child { border-top: 1px solid var(--line); }
.vz-who { margin: 0 0 3px; font-weight: 600; color: var(--ink); font-size: var(--text-md); }
.vz-items { margin: 0; font-size: var(--text-sm); color: var(--ink-soft); line-height: 1.55; }
.vz-dots { display: inline-flex; gap: 4px; margin-right: 9px; }
.vz-dots::before, .vz-dots::after { content: ""; width: 9px; height: 9px; border-radius: 50%; }
.vz-otpt  .vz-dots::before { background: var(--teal); } .vz-otpt  .vz-dots::after { background: var(--plum); }
.vz-otslp .vz-dots::before { background: var(--teal); } .vz-otslp .vz-dots::after { background: var(--ochre); }
.vz-ptslp .vz-dots::before { background: var(--plum); } .vz-ptslp .vz-dots::after { background: var(--ochre); }
.vz-all .vz-dots::before { background: var(--teal); box-shadow: 13px 0 0 var(--plum); margin-right: 13px; }
.vz-all .vz-dots::after { background: var(--ochre); }

/* F48: FIGURE LANGUAGE (the anti-kit) - numbered figures, hairline column rules, run-in prose.
   No boxes: a figure is bounded by a 2px rule above and a hairline below, nothing else. */
.fig { margin: 0; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); padding: 12px 0 22px; }
.fig-cap { margin: 0 0 18px; font-size: var(--text-sm); color: var(--ink-soft); }
.fig-no { font-family: var(--mono); font-size: var(--text-xs); letter-spacing: var(--track-label); color: var(--clay-deep); margin-right: 10px; }
.fig-cols { display: grid; grid-template-columns: 1fr 1fr 1fr; }
.fig-col { padding: 0 22px; min-width: 0; }
.fig-col:first-child { padding-left: 0; }
.fig-col + .fig-col { border-left: 1px solid var(--line); }
.fig-obj { width: 40px; height: 40px; fill: none; stroke: var(--teal); stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; stroke-opacity: .8; display: block; margin-bottom: 8px; }
.fig-name { font-size: 1.12rem; margin: 0 0 2px; }
.fig-alias { margin: 0 0 12px; font-size: var(--text-sm); color: var(--ink-faint); font-style: italic; }
.fig-body { margin: 0 0 8px; font-size: var(--text-md); color: var(--ink-soft); line-height: 1.55; }
.fig-body strong { color: var(--ink); }
.fig-eg { margin: 10px 0 0; font-size: var(--text-sm); color: var(--ink-faint); line-height: 1.5; }
@media (max-width: 760px) {
  .fig-cols { grid-template-columns: 1fr; }
  .fig-col { padding: 16px 0; }
  .fig-col + .fig-col { border-left: 0; border-top: 1px solid var(--line); }
}
/* F47/F48: profile expansions as editorial run-in prose, two text columns when wide */
.dp-prose { column-count: 2; column-gap: 40px; column-rule: 1px solid var(--line); }
@media (max-width: 760px) { .dp-prose { column-count: 1; } }
.dp-prose p { break-inside: avoid; margin: 0 0 12px; font-size: var(--text-md); color: var(--ink-soft); line-height: 1.6; }
.dp-run { color: var(--ink); }

/* pill bullets */
ul.ticks { list-style: none; padding: 0; margin: 8px 0; display: grid; gap: 8px; }
ul.ticks li { padding-left: 28px; position: relative; color: var(--ink-soft); }
ul.ticks li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--teal); font-weight: 700; }
ul.arrows li::before { content: "→"; color: var(--clay-deep); }

/* ============================= VIDEO CARDS ============================= */
.video-card { display: flex; flex-direction: column; overflow: hidden; padding: 0; }
.video-thumb {
  aspect-ratio: 16/9; position: relative; display: block; background: var(--ink); overflow: hidden;
}
.video-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .35s var(--ease); }
.video-card:hover .video-thumb img { transform: scale(1.05); }
.video-thumb .play {
  position: absolute; inset: 0; display: grid; place-items: center; background: linear-gradient(transparent, rgba(0,0,0,.25));
}
.video-thumb .play svg { width: 54px; height: 54px; filter: drop-shadow(0 4px 12px rgba(0,0,0,.5)); opacity: .92; transition: transform .2s var(--ease); }
.video-card:hover .play svg { transform: scale(1.12); }
.video-thumb iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }
.video-card.is-playing { cursor: auto; }
.video-body .watch-ext { display: inline-block; margin-top: 8px; font-family: var(--mono); font-size: var(--text-xs); }
.video-body { padding: 14px 16px 16px; }
.video-body h3 { margin: 0 0 6px; font-size: 1rem; line-height: 1.2; }
.video-body .chan { font-family: var(--mono); font-size: var(--text-xs); color: var(--ink-faint); }
.video-body p { font-size: var(--text-sm); color: var(--ink-soft); margin: 8px 0 0; }

/* ============================= SEARCH OVERLAY ============================= */
.search-overlay { position: fixed; inset: 0; z-index: 120; background: var(--scrim); backdrop-filter: blur(6px); display: grid; align-items: start; justify-items: center; padding-top: clamp(40px, 12vh, 130px); }
.search-panel { width: min(680px, 92vw); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-pop); overflow: hidden; animation: pop .22s var(--ease) both; }
@keyframes pop { from { opacity: 0; transform: translateY(-12px) scale(.98); } to { opacity:1; transform: none; } }
.search-input-row { display: flex; align-items: center; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--line); color: var(--ink-faint); }
.search-input-row input { flex: 1; border: 0; background: transparent; font: inherit; font-size: 1.1rem; color: var(--ink); outline: none; }
.search-results { max-height: min(56vh, 460px); overflow-y: auto; padding: 8px; }
.search-results .sr {
  display: block; width: 100%; text-align: left; background: transparent; border: 0; cursor: pointer;
  padding: 11px 14px; border-radius: var(--radius-sm); font: inherit; color: var(--ink);
}
.search-results .sr:hover, .search-results .sr.sel { background: var(--bg-alt); }
.search-results .sr .sr-cat { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); text-transform: uppercase; color: var(--clay-deep); }
.search-results .sr .sr-title { font-weight: 600; }
.search-results .sr .sr-desc { font-size: var(--text-sm); color: var(--ink-faint); }
/* F37: shared empty-state treatment - drawn-object icon, message, recovery action.
   .search-empty (the search overlay's zero-result state) shares the same icon rule so the
   two never drift; .empty-state is the version used inline in a page (conditions/assessments/
   directory/bulletin/glossary zero-result branches). */
.empty-state, .search-empty { padding: 26px 10px; text-align: center; color: var(--ink-faint); font-size: var(--text-md); }
.empty-state .empty-obj, .search-empty .empty-obj {
  display: block; width: 46px; height: 46px; margin: 2px auto 10px;
  fill: none; stroke: var(--teal); stroke-width: 2.6;
  stroke-linecap: round; stroke-linejoin: round; stroke-opacity: .75;
}
.empty-state p, .search-empty p { margin: 0 0 4px; }
.search-suggest-label { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); text-transform: uppercase; color: var(--ink-faint); margin-top: 14px !important; }
.search-suggest { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 8px; }

/* ============================= FORMS / TOOLS ============================= */
.field { margin-bottom: 16px; }
.field label { display: block; font-weight: 600; font-size: var(--text-md); margin-bottom: 6px; color: var(--ink); }
.field .hint { font-size: var(--text-sm); color: var(--ink-faint); font-weight: 400; }
.field input[type="text"], .field input[type="number"], .field select, .field textarea {
  width: 100%; padding: 11px 14px; border-radius: var(--radius-sm); border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); font: inherit; font-size: 1rem; /* >=16px: stops iOS Safari focus-zoom */
  transition: border-color .15s, box-shadow .15s;
}
.field textarea { min-height: 80px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--teal); box-shadow: 0 0 0 3px var(--teal-tint); outline: none; }

.tool-output {
  position: relative;
  margin-top: 16px; padding: 18px 20px; border-radius: var(--radius);
  background: var(--teal-tint); border: 1px solid color-mix(in srgb,var(--teal) 25%, transparent);
  font-size: .98rem; color: var(--ink);
}
.tool-output .out-label { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); color: var(--teal-deep); margin-bottom: 8px; }
.copy-btn {
  position: absolute; top: 14px; right: 16px; font-family: var(--mono); font-size: var(--text-xs);
  letter-spacing: var(--track-label); text-transform: uppercase; padding: 5px 12px; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--teal) 40%, transparent); background: var(--paper);
  color: var(--teal-deep); cursor: pointer; min-height: 0;
}
.copy-btn:hover { background: var(--teal); color: #fff; }
.copy-btn:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }
.tool-output code, .codeblock { font-family: var(--mono); font-size: var(--text-md); background: var(--surface); padding: 2px 6px; border-radius: var(--radius-xs); border: 1px solid var(--line); }
.codeblock { display: block; padding: 12px 14px; white-space: pre-wrap; line-height: 1.5; margin-top: 8px; }

/* F37: kit ration applied to the toolkit screener - rows on hairlines, NOT bordered checkbox
   cards. Each row's click target is the whole label (input wrapped); the visible box is a
   genuine custom checkbox (unchecked = 1.5px ink outline square, checked = teal fill + white
   tick from the i-check sprite), not the browser's native control. Logic/scoring untouched -    this is markup/CSS only (wireScreener() still reads "#scrList input:checked"). */
.checklist { display: block; }
.check-item {
  position: relative; display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 2px; border-bottom: 1px solid var(--line); cursor: pointer;
}
.check-item:first-child { border-top: 1px solid var(--line); }
.check-item:hover .ci-text { color: var(--teal-deep); }
/* .ci-input reuses .sr-only (visually hidden, still keyboard/AT-operable) - see markup. */
.check-item .ci-box {
  flex: none; width: 20px; height: 20px; margin-top: 2px;
  border: 1.5px solid var(--ink); border-radius: 0; background: transparent;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}
.check-item .ci-box .ci-tick {
  width: 13px; height: 13px; fill: none; stroke: #fff; stroke-width: 3;
  stroke-linecap: round; stroke-linejoin: round;
  opacity: 0; transform: scale(.6); transition: opacity var(--dur-1) var(--ease), transform var(--dur-1) var(--ease);
}
.check-item .ci-input:checked ~ .ci-box { background: var(--teal); border-color: var(--teal); }
.check-item .ci-input:checked ~ .ci-box .ci-tick { opacity: 1; transform: scale(1); }
.check-item .ci-input:focus-visible ~ .ci-box { outline: 2px solid var(--teal); outline-offset: 2px; }
.check-item .ci-text { font-size: .94rem; transition: color var(--dur-1); }
.check-item .ci-text small { display:block; color: var(--ink-faint); font-size: var(--text-sm); }

/* mini tabs */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 22px; flex-wrap: wrap; }
.tab-btn { background: transparent; border: 0; border-bottom: 2px solid transparent; padding: 10px 14px; cursor: pointer; font: inherit; font-weight: 600; color: var(--ink-faint); font-size: var(--text-md); transition: color .15s, border-color .15s; }
.tab-btn:hover { color: var(--ink); }
.tab-btn.active { color: var(--teal-deep); border-bottom-color: var(--clay-deep); }

/* condition / item list */
.itemcard { display: flex; flex-direction: column; gap: 0; cursor: pointer; padding: 0; overflow: hidden; }
.itemcard .ic-top { padding: 18px 20px 14px; }
.itemcard .ic-cat { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); text-transform: uppercase; color: var(--clay-deep); margin-bottom: 6px; }
.itemcard h2 { font-size: var(--text-card); margin: 0 0 6px; }
.itemcard .ic-desc { font-size: var(--text-md); color: var(--ink-soft); margin: 0; }
.itemcard .ic-foot { margin-top: auto; padding: 12px 20px; border-top: 1px dashed var(--line); font-size: var(--text-sm); color: var(--ink-faint); display: flex; justify-content: space-between; align-items: center; }

/* F35: library masthead - conditions/assessments float the search UP beside the h1 as a
   composed masthead row (varies header composition on the two library pages). Wraps under
   at narrow widths so the search never crowds the title. */
.lib-masthead { display: flex; align-items: flex-end; justify-content: space-between; gap: 14px 28px; flex-wrap: wrap; }
.lib-masthead .page-title { margin-bottom: 0; }
.lib-masthead .lib-search { flex: 1 1 260px; max-width: 440px; margin: 0; }
@media (max-width: 600px) { .lib-masthead .lib-search { flex-basis: 100%; } }

/* ============== F49 - THE INDEX: the reference library as a book index ==============
   Kit ration applied: no boxes, rows on hairlines, plate numbers 07·n / 08·n that
   pre-figure F36's drawer PLATE stamps. Section top rule matches .fig (2px ink). */
.idx-sec { border-top: 2px solid var(--ink); margin-top: 30px; }
.idx-sec:first-child { margin-top: 10px; }
.idx-head { display: flex; align-items: baseline; gap: 10px; padding: 10px 0 4px; }
.idx-head h2 { font-size: 1.05rem; margin: 0; }
.idx-head .icn { width: 17px; height: 17px; color: var(--teal); vertical-align: -3px; margin-right: 3px; }
.idx-count { font-family: var(--mono); font-size: var(--text-xs); letter-spacing: var(--track-label); color: var(--ink-faint); }
.idx-list { list-style: none; margin: 0; padding: 0; }
.idx-list > li + li { border-top: 1px solid var(--line); }
.idx-row {
  display: block; width: 100%; text-align: left; background: none; border: 0;
  padding: 11px 6px 12px 2px; cursor: pointer; font: inherit; color: inherit;
  border-radius: var(--radius-xs); transition: background .15s var(--ease);
}
.idx-row:hover { background: var(--surface); }
.idx-row:hover .idx-name { color: var(--teal-deep); }
.idx-main { display: flex; align-items: baseline; gap: 10px; min-width: 0; }
.idx-no { flex: 0 0 46px; font-family: var(--mono); font-size: var(--text-xs); letter-spacing: var(--track-label); color: var(--clay-deep); }
.idx-no-date { flex-basis: 78px; }            /* bulletin rows: the date is the coordinate */
.idx-detail p a { color: var(--teal-deep); }
.idx-name { font-family: var(--serif); font-weight: 600; font-size: 1.02rem; letter-spacing: -.01em; }
.idx-leader { flex: 1 1 24px; min-width: 24px; border-bottom: 1px dotted var(--ink-faint); opacity: .55; transform: translateY(-.3em); }
.idx-main > .ev-mini, .idx-main > .tag, .idx-set { flex: none; }
.idx-set { font-size: var(--text-sm); color: var(--ink-faint); }
.idx-desc { display: block; font-size: var(--text-sm); color: var(--ink-soft); margin: 2px 0 0 56px; max-width: 64ch; }
/* Assessments: rows are <details>; the summary reuses the row anatomy. */
details.idx-x > summary { list-style: none; }
details.idx-x > summary::-webkit-details-marker { display: none; }
details.idx-x > summary .idx-tgl { flex: none; font-family: var(--mono); font-size: var(--text-sm); color: var(--ink-faint); transition: transform .18s var(--ease); }
details.idx-x[open] > summary .idx-tgl { transform: rotate(45deg); color: var(--teal-deep); }
details.idx-x[open] > summary { background: var(--surface); }
/* F39: index-row disclosure body - CSS-only grid open animation (0fr→1fr), no JS.
   The wrapper stays display:grid at 0-height when closed, so the row-track transition
   fires on open across browsers. The +→× idx-tgl rotation (above) is kept. */
details.idx-x > .idx-wrap { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--dur-2) var(--ease); }
details.idx-x[open] > .idx-wrap { grid-template-rows: 1fr; }
details.idx-x > .idx-wrap > .idx-detail { overflow: hidden; min-height: 0; }
@media (prefers-reduced-motion: reduce) {
  details.idx-x > .idx-wrap { transition: none; }
  details.idx-x > summary .idx-tgl { transition: none; }
}
/* F39: horizontal-only padding - vertical padding on the grid item (.idx-detail) would floor the
   collapsed 0fr track at its padding height, so the top/bottom inset is delivered as child margins
   (clipped to 0 when closed via .idx-detail's overflow:hidden, restored on open). */
.idx-detail { padding: 0 6px 0 56px; }
.idx-detail > :first-child { margin-top: 2px; }
.idx-detail > :last-child { margin-bottom: 16px; }
.idx-detail p { margin: 0 0 7px; font-size: var(--text-md); color: var(--ink-soft); line-height: 1.55; max-width: 70ch; }
.idx-detail p strong { color: var(--ink); }
.idx-detail .ev-row { margin: 10px 0 2px; }
@media (max-width: 640px) {
  .idx-row { padding: 12px 4px; }
  .idx-no { flex: 0 0 auto; }
  .idx-main { flex-wrap: wrap; }               /* evidence dot wraps under the name if tight */
  .idx-leader { display: none; }
  .idx-desc { margin-left: 0; }
  .idx-detail { padding-left: 4px; }
}

.count-note { font-family: var(--mono); font-size: var(--text-sm); color: var(--ink-faint); }

/* detail drawer */
.drawer-scrim { position: fixed; inset: 0; z-index: 110; background: var(--scrim); backdrop-filter: blur(3px); animation: fade .2s var(--ease) both; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 111; width: min(620px, 94vw);
  background: var(--bg); border-left: 1px solid var(--line); box-shadow: var(--shadow-pop);
  overflow-y: auto; animation: slide-in .3s var(--ease) both;
}
@keyframes slide-in { from { transform: translateX(40px); opacity: .6; } to { transform: none; opacity: 1; } }
.drawer-head { position: sticky; top: 0; background: color-mix(in srgb,var(--bg) 92%, transparent); backdrop-filter: blur(8px); padding: 22px 26px 16px; border-bottom: 1px solid var(--line); z-index: 2; }
.drawer-head .close { position: absolute; top: 18px; right: 18px; }
.drawer-head .drawer-share { position: absolute; top: 18px; right: 54px; }
.drawer-body { padding: 22px 26px 60px; }
/* F36: drawer section headings demoted to the quiet book voice (was mono, tracked, uppercase). */
.drawer-body h3 { margin: 20px 0 7px; color: var(--ink); font-family: var(--serif); font-size: var(--text-md); font-weight: 600; letter-spacing: -.01em; text-transform: none; }
.drawer-body h3:first-child { margin-top: 4px; }

/* F36: specimen-plate condition header band - full-bleed category-tinted strip, square corners.
   Only openCondition passes `plate`, so models/other drawers keep the plain .drawer-head. */
.drawer-plate { padding: 15px 26px 15px; background: var(--paper-2); color: var(--ink-soft); }
.drawer-plate[data-tint="neuro"] { background: var(--teal-tint);  color: var(--teal-deep); }
.drawer-plate[data-tint="hand"]  { background: var(--ochre-tint); color: var(--ochre-deep); }
.drawer-plate[data-tint="peds"]  { background: var(--sage-tint);  color: var(--sage-deep); }
.drawer-plate[data-tint="mh"]    { background: color-mix(in srgb, var(--plum) 16%, transparent); color: var(--plum-deep); }
.drawer-plate[data-tint="geri"]  { background: var(--clay-tint);  color: var(--clay-deep); }
.drawer-plate[data-tint="spec"]  { background: var(--paper-2);    color: var(--ink-soft); }
.plate-stamp-row { display: flex; align-items: center; gap: 8px; min-height: 20px; }
.plate-icn { display: inline-flex; color: inherit; }
.plate-icn .icn { width: 19px; height: 19px; vertical-align: 0; }
.plate-stamp { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); text-transform: uppercase; color: inherit; }
.drawer-plate .drawer-title { margin: 6px 0 0; font-family: var(--serif); font-weight: 500; font-size: 1.7rem; line-height: 1.12; letter-spacing: -.01em; color: var(--ink); }
.plate-taxon { margin: 5px 0 0; font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); text-transform: uppercase; color: inherit; opacity: .85; }

/* F36: evidence arc-dial (decorative) sits beside the badge block. */
.ev-dialwrap { display: flex; align-items: flex-start; gap: 14px; }
.ev-dialwrap .ev-block { flex: 1 1 auto; min-width: 0; }
.ev-dial { flex: none; }
.ev-dial .dial-track { fill: none; stroke: var(--line); stroke-width: 4; stroke-linecap: round; }
.ev-dial .dial-val { fill: none; stroke: currentColor; stroke-width: 4; stroke-linecap: round; }
.ev-dial .dial-tick { fill: var(--line); }
.ev-dial .dial-tick.on { fill: currentColor; }
.ev-dial[data-tone="teal"]  { color: var(--teal-deep); }
.ev-dial[data-tone="sage"]  { color: var(--sage-deep); }
.ev-dial[data-tone="ochre"] { color: var(--ochre-deep); }
.ev-dial[data-tone="clay"]  { color: var(--clay-deep); }
.ev-dial[data-tone="plum"]  { color: var(--plum-deep); }
.drawer-body p, .drawer-body li { color: var(--ink-soft); }
.drawer-body ul { padding-left: 20px; margin: 4px 0 8px; }
.drawer-body ul li { margin-bottom: 5px; }

/* timeline */
.timeline { position: relative; margin: 10px 0; padding-left: 26px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding: 0 0 22px; }
.tl-item::before { content: ""; position: absolute; left: -23px; top: 5px; width: 12px; height: 12px; border-radius: 50%; background: var(--clay); border: 2px solid var(--bg); }
.tl-item .yr { font-family: var(--mono); font-size: var(--text-sm); font-variant-numeric: tabular-nums; color: var(--teal-deep); font-weight: 600; }
.tl-item p { margin: 2px 0 0; color: var(--ink-soft); font-size: .94rem; }

/* F37: pageFoot() → a map-legend colophon. Hairline-rule composition (2px rule above, echoes
   .fig), NO card/box; mono labels at --text-2xs/--track-label, same voice as .fig-no/.idx-no. */
.page-foot {
  margin-top: 60px; padding-top: 20px; border-top: 2px solid var(--ink);
  font-size: var(--text-sm); color: var(--ink-faint);
}
.page-foot p { margin: 0 0 8px; }
.page-foot .foot-legal { max-width: 72ch; }
.page-foot .foot-colophon {
  font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label);
  text-transform: uppercase; color: var(--ink-faint);
}
.page-foot .foot-face { color: var(--ink-soft); }
.page-foot a { color: var(--teal-deep); }
.page-foot .foot-next {
  display: block; margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--line);
  font-family: var(--serif); font-size: var(--text-md); font-weight: 600; color: var(--ink);
  text-decoration: none;
}
.page-foot .foot-next:hover { color: var(--teal-deep); }

/* utility */
.muted { color: var(--ink-faint); }
.small { font-size: var(--text-sm); }
.mono { font-family: var(--mono); }
.center { text-align: center; }
.mt0{margin-top:0}.mb0{margin-bottom:0}
.flex { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.spread { display: flex; justify-content: space-between; gap: 16px; align-items: center; flex-wrap: wrap; }
.pill-link { font-family: var(--mono); font-size: var(--text-sm); color: var(--teal-deep); text-decoration: none; border-bottom: 1px solid currentColor; }
.hide { display: none !important; }

/* ============================= RIGOR / EVIDENCE ============================= */
.ev-badges { display: inline-flex; flex-wrap: wrap; gap: 6px; align-items: center; vertical-align: middle; }
.ev-badge {
  font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); font-weight: 600;
  padding: 3px 9px; border-radius: 999px; border: 1px solid transparent; white-space: nowrap;
  display: inline-flex; align-items: center; gap: 5px;
}
.ev-badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; opacity: .9; }
.ev-teal  { background: var(--teal-tint);  color: var(--teal-deep); }
.ev-sage  { background: var(--sage-tint);  color: var(--sage-deep); }
.ev-ochre { background: var(--ochre-tint); color: var(--ochre-deep); }
.ev-clay  { background: var(--clay-tint);  color: var(--clay-deep); }
.ev-plum  { background: color-mix(in srgb, var(--plum) 16%, transparent); color: var(--plum-deep); }
.ev-conf { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); color: var(--ink-faint); text-transform: uppercase; }
.ev-ok, .ev-unv { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); padding: 2px 7px; border-radius: 999px; }
.ev-ok  { color: var(--teal-deep); background: var(--teal-tint); }
.ev-unv { color: var(--clay-deep); background: var(--clay-tint); }

.ev-block { margin: 8px 0 4px; padding: 14px 16px; border: 1px solid var(--line); border-left: 4px solid var(--teal); border-radius: var(--radius-sm); background: var(--bg-alt); }
.ev-block .ev-row { margin-bottom: 8px; }
.ev-note { font-size: var(--text-md); color: var(--ink-soft); margin: 4px 0 10px; }
.ev-bias { font-size: var(--text-sm); color: var(--ink-soft); margin: 6px 0; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.ev-bias-h { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); text-transform: uppercase; color: var(--clay-deep); }
.bias-chip { font-size: var(--text-sm); padding: 2px 9px; border-radius: 999px; background: var(--clay-tint); color: var(--clay-deep); border: 1px solid color-mix(in srgb, var(--clay) 22%, transparent); }
.ev-srch { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); color: var(--ink-faint); margin: 12px 0 6px; }
.ev-sources { display: flex; flex-wrap: wrap; gap: 8px; }
.src-chip { display: inline-flex; align-items: center; gap: 7px; font-size: var(--text-sm); padding: 5px 11px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--ink-soft); text-decoration: none; }
.src-chip:hover { border-color: var(--teal); color: var(--teal-deep); }
.src-type { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); text-transform: uppercase; color: var(--clay-deep); background: var(--clay-tint); padding: 1px 6px; border-radius: var(--radius-xs); }
.ev-mini { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); font-weight: 600; padding: 2px 8px; border-radius: 999px; display: inline-flex; align-items: center; gap: 4px; }
.ev-mini::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* evidence-strength filter row */
.strength-chips { align-items: center; margin-top: -8px; }
.filter-lead { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); color: var(--ink-faint); margin-right: 2px; }
.str-chip { gap: 7px; }
.str-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.str-chip.active .str-dot { background: #fff !important; }
.dot-teal { background: var(--teal); } .dot-sage { background: var(--sage); } .dot-ochre { background: var(--ochre); } .dot-clay { background: var(--clay); } .dot-plum { background: var(--plum); }

/* ============================= MODE / PLAIN-LANGUAGE TOGGLES ============================= */
.seg { display: inline-flex; background: var(--bg-alt); border: 1px solid var(--line); border-radius: 999px; padding: 2px; gap: 2px; }
.seg button { font-family: var(--mono); font-size: var(--text-xs); letter-spacing: var(--track-label); border: 0; background: transparent; color: var(--ink-faint); padding: 6px 11px; border-radius: 999px; cursor: pointer; display: inline-flex; align-items: center; gap: 5px; transition: background .15s, color .15s; }
.seg button:hover { color: var(--ink); }
.seg button[aria-pressed="true"] { background: var(--teal); color: #fff; box-shadow: var(--shadow-1); }
[data-theme="dark"] .seg button[aria-pressed="true"] { color: var(--paper); }
.seg button .seg-lbl { display: none; }
@media (min-width: 720px) { .seg button .seg-lbl { display: inline; } }

.plain-toggle { font-family: var(--mono); font-size: var(--text-xs); letter-spacing: var(--track-label); height: 42px; padding: 0 12px; border-radius: var(--radius-sm); border: 1px solid var(--line); background: var(--surface); color: var(--ink-faint); cursor: pointer; display: inline-flex; align-items: center; gap: 7px; transition: border-color .15s, color .15s; }
.plain-toggle:hover { border-color: var(--teal); color: var(--ink); }
.plain-toggle[aria-pressed="true"] { background: var(--ochre-tint); color: var(--ochre-deep); border-color: color-mix(in srgb, var(--ochre) 40%, transparent); }
.plain-toggle .pt-dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; opacity: .5; }
.plain-toggle[aria-pressed="true"] .pt-dot { opacity: 1; }
.plain-toggle .seg-lbl { display: none; }
@media (min-width: 860px) { .plain-toggle .seg-lbl { display: inline; } }

/* audience-scoped visibility driven by global mode */
[data-mode="public"] .nav-list li:has(a[data-aud="pro"]),
[data-mode="public"] .nav-eyebrow[data-aud="pro"] { display: none; }
.aud-pro, .aud-public { display: block; }
[data-mode="public"] .aud-pro { display: none; }
[data-mode="clinical"] .aud-public-only { display: none; }
.mode-banner { font-family: var(--mono); font-size: var(--text-xs); letter-spacing: var(--track-label); color: var(--ink-faint); background: var(--bg-alt); border: 1px dashed var(--line); border-radius: 999px; padding: 5px 14px; display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px; }
.mode-banner b { color: var(--teal-deep); font-weight: 600; }
.mode-banner button { background: none; border: 0; color: var(--clay-deep); font: inherit; cursor: pointer; text-decoration: underline; padding: 0; }

/* plain-language readability boost */
[data-plain="on"] .drawer-body p, [data-plain="on"] .drawer-body li,
[data-plain="on"] .prose p, [data-plain="on"] .ic-desc, [data-plain="on"] .lede { line-height: 1.72; }
[data-plain="on"] body, [data-plain="on"] .drawer-body { letter-spacing: .005em; }
.plain-only { display: none; }
[data-plain="on"] .plain-only { display: block; }
[data-plain="on"] .clinical-only { display: none; }
[data-plain="on"] .plain-hint { display: inline; }

/* country facts */
.country-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); margin-top: 8px; }
.country-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow-1); }
.country-card .cc-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.country-card .cc-flag { font-size: 1.5rem; line-height: 1; }
.country-card .cc-name { font-family: var(--serif); font-size: var(--text-card); font-weight: 500; color: var(--ink); }
.country-card dl { margin: 0; display: grid; gap: 8px; }
.country-card .cc-row { display: grid; gap: 1px; }
.country-card .cc-k { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); text-transform: uppercase; color: var(--clay-deep); }
.country-card .cc-v { font-size: var(--text-md); color: var(--ink-soft); }
.country-card .cc-foot { margin-top: 12px; padding-top: 10px; border-top: 1px dashed var(--line); font-size: var(--text-sm); display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }

/* ============================= ICON SYSTEM ============================= */
svg.icn {
  fill: none; stroke: currentColor; stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
  width: 16px; height: 16px; flex: none; vertical-align: -3px;
}
.ni .icn { width: 15px; height: 15px; display: block; }
.chip .icn { width: 13px; height: 13px; }
.seg .icn { width: 14px; height: 14px; }
.pw-ico .icn { width: 28px; height: 28px; color: var(--clay-deep); }
.card-num .icn { width: 18px; height: 18px; }
/* F16: icon colour utilities (AA-safe -deep variants for accent tints) + contextual sizing */
svg.icn.c-teal  { color: var(--teal-deep); }
svg.icn.c-clay  { color: var(--clay-deep); }
svg.icn.c-sage  { color: var(--sage-deep); }
svg.icn.c-ochre { color: var(--ochre-deep); }
.reason-ico { margin-bottom: 5px; }
.reason-ico .icn { width: 26px; height: 26px; color: var(--teal); }
.section-head .icn { width: .9em; height: .9em; color: var(--teal); vertical-align: -.11em; margin-right: .12em; }
.callout .ico .icn { width: 21px; height: 21px; }
.video-thumb .icn { width: 40px; height: 40px; color: #F4F6FA; }
.icn.qico { width: 14px; height: 14px; }
.icn.pdot { width: 13px; height: 13px; vertical-align: -1px; }
.pt-abbr { display: inline; font-weight: 700; letter-spacing: 0; }
@media (min-width: 860px) { .pt-abbr { display: none; } }

/* Compact topbar on phones - without this the tools row (~490px) clips off-screen at 375px
   and the theme toggle becomes unreachable. */
@media (max-width: 600px) {
  .topbar { gap: 8px; padding: 0 10px; }
  .topbar-tools { gap: 5px; }
  .brand-text { display: none; }               /* mark stays; link keeps its aria-label */
  .search-trigger kbd { display: none; }
  .search-trigger { padding: 0 11px; }
  .seg button { padding: 6px 9px; }
}

/* ============================= FIRST-VISIT CHOOSER ============================= */
.welcome-scrim {
  position: fixed; inset: 0; z-index: 140;
  background: var(--scrim); backdrop-filter: blur(6px);
  display: grid; place-items: center; padding: 20px;
  animation: fade .25s var(--ease) both;
}
.welcome {
  width: min(600px, 94vw);
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-pop);
  padding: 30px 30px 18px;
  animation: pop .3s var(--ease) both;
  position: relative; overflow: hidden;
}
/* F45: faint terrain in the dialog corner - same voice as the hero */
.w-contours { position: absolute; top: 0; right: 0; width: 240px; height: 190px; pointer-events: none; color: var(--teal); }
.w-contours circle { fill: none; stroke: currentColor; stroke-width: 1; stroke-opacity: .13; }
html[data-theme="dark"] .w-contours circle { stroke-opacity: .22; }
.welcome > :not(.w-contours) { position: relative; z-index: 1; }
.welcome-choices { display: grid; gap: 10px; margin: 0 0 10px; }
.welcome-btn {
  text-align: left; font: inherit; color: inherit; cursor: pointer;
  background: var(--bg); border: 1.5px solid var(--line); border-radius: var(--radius);
  padding: 14px 18px; display: flex; align-items: center; gap: 16px;
  transition: border-color var(--dur-1), transform var(--dur-1) var(--ease), box-shadow var(--dur-2);
}
.welcome-btn:hover, .welcome-btn:focus-visible { border-color: var(--teal); transform: translateY(-2px); box-shadow: var(--shadow-1); }
.welcome-btn .w-obj {
  flex: none; width: 46px; height: 46px;
  fill: none; stroke: var(--teal); stroke-width: 2.6;
  stroke-linecap: round; stroke-linejoin: round; stroke-opacity: .8;
}
.welcome-btn .w-main { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.welcome-btn strong { font-family: var(--serif); font-size: var(--text-card); font-weight: 600; }
.welcome-btn .w-main span { font-size: var(--text-sm); color: var(--ink-soft); line-height: 1.45; }
.welcome-btn .w-arrow { margin-left: auto; flex: none; font-size: 1.25rem; color: var(--teal-deep); transition: transform var(--dur-1) var(--ease); }
.welcome-btn:hover .w-arrow, .welcome-btn:focus-visible .w-arrow { transform: translateX(4px); }
.welcome-foot { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.w-note { font-size: var(--text-sm); color: var(--ink-faint); }
.welcome-skip {
  background: none; border: 0; font: inherit; font-size: var(--text-sm);
  color: var(--ink-faint); cursor: pointer; text-decoration: underline; padding: 8px 0 2px;
}
.welcome-skip:hover { color: var(--clay-deep); }
@media (max-width: 560px) {
  .welcome-btn { gap: 12px; padding: 13px 14px; }
  .welcome-btn .w-obj { width: 38px; height: 38px; }
}

/* ============================= ACCESSIBILITY ============================= */
/* visually hidden, still read by screen readers */
.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
/* minimum touch targets for compact interactive controls (motor accessibility) */
.chip, .tab-btn, .seg button, .src-chip { min-height: 32px; }
.search-trigger, .icon-btn, .plain-toggle, .btn { min-height: 42px; }
kbd { font-family: var(--mono); font-size: var(--text-sm); font-variant-numeric: tabular-nums; background: var(--bg-alt); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: var(--radius-xs); padding: 1px 7px; color: var(--ink); white-space: nowrap; }
/* keyboard-selected search option is clearly indicated */
.search-results .sr[aria-selected="true"], .search-results .sr.sel { background: var(--bg-alt); box-shadow: inset 3px 0 0 var(--clay); }
/* honour an explicit high-contrast preference */
@media (prefers-contrast: more) {
  :root { --line: #b09e80; --ink-faint: #574e42; }
  [data-theme="dark"] { --line: #6a5f4d; --ink-faint: #cabda7; }
  .card, .chip, .src-chip, .country-card, .accordion, .ev-block,
  .field input, .field textarea, .field select { border-width: 2px; }
  a { text-decoration: underline; }
  :focus-visible { outline-width: 4px; }
}
/* Windows High Contrast / forced colours: keep boundaries visible */
@media (forced-colors: active) {
  .ev-badge, .chip, .tag, .bias-chip, .ev-mini, .src-chip { border: 1px solid; }
  .nav-list a.active, .seg button[aria-pressed="true"], .chip.active { outline: 2px solid; }
}

/* print */
@media print {
  /* F57 handout mode: print only the open drawer, as a clean client handout */
  body.print-focus > *:not(#drawerEl) { display: none !important; }
  body.print-focus #drawerEl { position: static !important; width: 100% !important; max-width: none !important; height: auto !important; max-height: none !important; overflow: visible !important; box-shadow: none !important; border: 0 !important; transform: none !important; }
  body.print-focus #drawerEl .drawer-share, body.print-focus #drawerEl .drawer-print, body.print-focus #drawerEl .close { display: none !important; }

  /* Force readable light tokens regardless of theme (this block is after the dark block → wins). */
  :root, [data-theme="dark"] {
    --paper:#fff; --paper-2:#fff; --card:#fff; --bg:#fff; --surface:#fff;
    --ink:#111; --ink-soft:#333; --ink-faint:#555; --line:#bbb; --line-soft:#ddd; --scrim:transparent;
    --teal:#156b66; --teal-deep:#0e4e4a; --teal-tint:#e6efec;
    --clay:#b4441f; --clay-deep:#b4441f; --clay-tint:#f7e6df;
    --sage-deep:#3f6152; --ochre-deep:#7e5810; --plum-deep:#573a4e;
  }
  @page { margin: 16mm; }
  body { background:#fff !important; color:#111 !important; position:static !important; overflow:visible !important; }
  body::before, .grain,
  .topbar, .sidenav, .nav-foot, .back-to-top, #backToTop,
  .search-overlay, .drawer-scrim, .welcome-scrim,
  .sticky-jump, .copy-btn, .drawer-share, .mode-banner, .skip-link { display:none !important; }
  .layout, .view, .page { margin:0 !important; padding:0 !important; display:block !important; }
  /* F38: printed handouts must never carry an unrevealed (opacity:0) section - force every
     scroll-reveal target fully visible with no transition, regardless of scroll position. */
  .reveal { opacity:1 !important; transform:none !important; transition:none !important; }
  /* an open condition drawer prints inline instead of as a clipped fixed panel */
  .drawer { position:static !important; width:100% !important; max-width:100% !important; max-height:none !important; box-shadow:none !important; border:0 !important; transform:none !important; overflow:visible !important; }
  .drawer-head { position:static !important; backdrop-filter:none !important; }
  .drawer-head .close { display:none !important; }
  /* reveal collapsed accordion content so handouts are complete */
  .acc-body { max-height:none !important; overflow:visible !important; padding:4px 20px 18px !important; }
  .acc-head .caret { display:none !important; }
  /* keep blocks whole across page breaks */
  .card, .callout, .accordion, .ev-block, .country-card, .itemcard, .step, .tool-output, .video-card { box-shadow:none !important; border-color:#bbb !important; break-inside:avoid; page-break-inside:avoid; }
  h1, h2, h3, h4 { break-after:avoid; page-break-after:avoid; }
  a { color:#111 !important; }
  /* expand external citation URLs; suppress for internal/hash links */
  a[href^="http"]::after { content:" (" attr(href) ")"; font-size:.82em; color:#555; word-break:break-all; }
  a[href^="#"]::after, a[href^="./"]::after, a[href^="/"]::after { content:"" !important; }
}

/* ============== F57 STUDY CARDS - a card is true containment; it earns its rules ============== */
.study-stage { margin-top: 30px; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); padding: 22px 4px 26px; min-height: 320px; display: flex; flex-direction: column; }
.study-meta { display: flex; justify-content: space-between; align-items: baseline; margin: 0 0 18px; }
.study-cat { font-family: var(--mono); font-size: var(--text-2xs); letter-spacing: var(--track-label); text-transform: uppercase; color: var(--clay-deep); }
.study-progress { font-family: var(--mono); font-size: var(--text-xs); color: var(--ink-faint); font-variant-numeric: tabular-nums; }
.study-q { font-family: var(--serif); font-size: 1.45rem; line-height: 1.35; color: var(--ink); max-width: 30ch; }
.study-a { margin-top: 20px; padding-top: 18px; border-top: 1px dotted var(--ink-faint); color: var(--ink-soft); max-width: 62ch; }
.study-a p { margin: 0 0 8px; }
.study-a strong { color: var(--ink); }
.study-ev { font-family: var(--mono); font-size: var(--text-xs); color: var(--ink-faint); }
.study-controls { margin-top: auto; padding-top: 24px; display: flex; gap: 12px; }
.study-controls kbd { font-family: var(--mono); font-size: var(--text-2xs); opacity: .6; margin-left: 6px; }
.study-done { margin: auto; text-align: center; }
.study-done-head { font-family: var(--serif); font-size: 1.4rem; margin: 0 0 6px; color: var(--ink); }
@media (max-width: 640px) { .study-q { font-size: 1.2rem; } .study-controls { flex-direction: column; } }
/* No physical keyboard on touch - the shortcut hints are noise there. */
@media (pointer: coarse) { .study-controls kbd { display: none; } }

/* F73: shy-course flagship visuals - progress rail, dose bar, language chips, print sheets */
.shy-rail { display: flex; align-items: center; margin: 10px 0 16px; max-width: 560px; }
.sr-dot { width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--line); display: grid; place-items: center; font-family: var(--mono); font-size: 12px; color: var(--ink-faint); flex: none; transition: background .2s var(--ease), border-color .2s var(--ease); }
.sr-dot.done { background: var(--teal); border-color: var(--teal); color: #F4F6FA; }
.sr-line { height: 1.5px; background: var(--line); flex: 1; }
.dosebar { display: flex; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; margin: 12px 0 4px; font-family: var(--mono); font-size: var(--text-xs); text-align: center; line-height: 1.5; }
.dosebar .db-z { padding: 8px 6px; flex: 1; }
.dosebar .db-easy { background: var(--paper-2); color: var(--ink-faint); }
.dosebar .db-right { background: var(--teal-tint); color: var(--teal-deep); flex: 1.5; font-weight: 600; border-left: 1px solid var(--line); border-right: 1px solid var(--line); }
.dosebar .db-much { background: var(--clay-tint); color: var(--clay-deep); }
.shy-lang { display: inline-flex; gap: 6px; }
#printSheet { display: none; }
@media print {
  body.print-sheet-focus > *:not(#printSheet) { display: none !important; }
  body.print-sheet-focus #printSheet { display: block !important; }
  #printSheet .sheet { font-family: Georgia, serif; color: #111; max-width: 660px; margin: 0 auto; }
  #printSheet h1 { font-size: 26pt; margin: 0 0 14pt; }
  #printSheet .sheet-line { font-size: 13pt; letter-spacing: .04em; margin: 0 0 14pt; }
  #printSheet ol li { margin-bottom: 9pt; font-size: 12pt; line-height: 1.5; }
  #printSheet p { font-size: 12pt; line-height: 1.55; }
  #printSheet .small { font-size: 10pt; color: #444; }
  #printSheet .sheet-foot { margin-top: 18pt; font-size: 9.5pt; color: #666; border-top: 1px solid #ccc; padding-top: 8pt; }
}