:root{
  --bg:#ffffff;--bg-subtle:#fafafa;--bg-muted:#f4f4f5;--bg-inset:#f8f8f9;
  --fg:#09090b;--fg-muted:#52525b;--fg-subtle:#a1a1aa;
  --border:#e4e4e7;--border-strong:#d4d4d8;
  --accent:#2563eb;--accent-hover:#1d4ed8;--accent-fg:#ffffff;--accent-subtle:#eff6ff;
  --ok:#15803d;--ok-subtle:#f0fdf4;--warn:#b45309;--warn-subtle:#fffbeb;
  --radius:12px;--radius-sm:8px;--radius-lg:16px;
  --shadow-sm:0 1px 2px rgb(0 0 0/.04);
  --shadow-md:0 4px 12px -2px rgb(0 0 0/.08),0 2px 4px -2px rgb(0 0 0/.04);
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,'SF Mono',Menlo,Consolas,monospace;
  --maxw:1100px;--font-size:16px;--header-h:56px;
}
[data-theme=dark]{
  --bg:#09090b;--bg-subtle:#101012;--bg-muted:#18181b;--bg-inset:#141416;
  --fg:#fafafa;--fg-muted:#a1a1aa;--fg-subtle:#71717a;
  --border:#27272a;--border-strong:#3f3f46;
  --accent:#3b82f6;--accent-hover:#60a5fa;--accent-fg:#ffffff;--accent-subtle:#172554;
  --ok:#4ade80;--ok-subtle:#052e16;--warn:#fbbf24;--warn-subtle:#451a03;
  --shadow-sm:0 1px 2px rgb(0 0 0/.4);
  --shadow-md:0 4px 12px -2px rgb(0 0 0/.5),0 2px 4px -2px rgb(0 0 0/.3);
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#09090b;--bg-subtle:#101012;--bg-muted:#18181b;--bg-inset:#141416;--fg:#fafafa;--fg-muted:#a1a1aa;--fg-subtle:#71717a;--border:#27272a;--border-strong:#3f3f46;--accent:#3b82f6;--accent-hover:#60a5fa;--accent-fg:#ffffff;--accent-subtle:#172554;--ok:#4ade80;--ok-subtle:#052e16;--warn:#fbbf24;--warn-subtle:#451a03;--shadow-sm:0 1px 2px rgb(0 0 0/.4);--shadow-md:0 4px 12px -2px rgb(0 0 0/.5),0 2px 4px -2px rgb(0 0 0/.3);}}
*,*::before,*::after{box-sizing:border-box;}
/* Form controls do not inherit colour/font by default: a <button> takes the UA
   `buttontext` system colour, which follows the OS theme and ignores data-theme. */
button,input,select,textarea{font:inherit;color:inherit;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;}}
body{margin:0;font-family:var(--sans);font-size:var(--font-size);line-height:1.6;background:var(--bg);color:var(--fg);}
.container{max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(16px,4vw,32px);}
.skip-link{position:absolute;left:-9999px;z-index:100;padding:8px 16px;background:var(--accent);color:var(--accent-fg);border-radius:var(--radius-sm);}
.skip-link:focus{left:16px;top:16px;}
.site-header{position:sticky;top:0;z-index:50;background:var(--bg-subtle);border-bottom:1px solid var(--border);backdrop-filter:blur(8px);}
.header-inner{display:flex;align-items:center;gap:16px;padding-block:10px;}/* NOT height:var(--header-h) - the JS measures this box and writes --header-h,
   so consuming it here would create a feedback loop that grows the header. */
.wordmark{margin-right:auto;font-size:1.25rem;font-weight:700;color:var(--fg);text-decoration:none;letter-spacing:-0.02em;}
.wordmark:hover{color:var(--accent);}
.site-nav{display:flex;align-items:center;gap:16px;}
.site-nav a{color:var(--fg-muted);text-decoration:none;font-size:.875rem;font-weight:500;}
.site-nav a:hover{color:var(--fg);}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);color:var(--fg);cursor:pointer;}
.theme-toggle:hover{background:var(--bg-muted);}
.theme-toggle svg{stroke:currentColor;}
main{min-height:60vh;}
section{padding-block:clamp(40px,6vw,72px);}
.page-header{padding-block:clamp(32px,5vw,56px);}
h1{font-size:clamp(1.9rem,1.4rem + 2vw,2.75rem);font-weight:700;letter-spacing:-0.02em;line-height:1.15;margin:0 0 16px;}
h2{font-size:1.5rem;font-weight:700;line-height:1.25;margin:0 0 16px;}
h3{font-size:1.05rem;font-weight:600;line-height:1.3;margin:24px 0 8px;}
p{margin:0 0 16px;}
a{color:var(--accent);}
a:hover{color:var(--accent-hover);}
.lead{font-size:1.125rem;color:var(--fg-muted);max-width:680px;margin-bottom:20px;}
.answer-block{background:var(--accent-subtle);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;font-size:1.05rem;line-height:1.6;max-width:760px;}
.answer-block p:last-child{margin-bottom:0;}
.answer-block strong{color:var(--fg);}
.hero{padding-block:clamp(40px,6vw,72px);}
.hero-sub{font-size:1.125rem;color:var(--fg-muted);max-width:680px;margin-bottom:24px;}
.search-panel{position:sticky;top:var(--header-h);z-index:40;background:var(--bg);border-bottom:1px solid var(--border);padding-block:16px;box-shadow:var(--shadow-sm);}
.search-row{margin-bottom:12px;}
.search-input{width:100%;height:48px;padding:0 16px;font-size:17px;font-family:var(--sans);border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--bg);color:var(--fg);}
.search-input:focus{outline:2px solid var(--accent);outline-offset:2px;}
.filter-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;}
.filter-row label{font-size:.875rem;color:var(--fg-muted);}
.filter-row select{height:36px;padding:0 28px 0 12px;font-size:.875rem;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--bg);color:var(--fg);}
.checkbox{display:inline-flex;align-items:center;gap:6px;cursor:pointer;}
.checkbox input{width:18px;height:18px;accent-color:var(--accent);}
.result-count{margin-left:auto;font-size:.875rem;font-weight:500;color:var(--fg-muted);}
.symbol-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px;}
.symbol-grid.small{grid-template-columns:repeat(auto-fill,minmax(80px,1fr));}
.sym{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:96px;padding:8px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);font-family:var(--sans);font-size:.875rem;color:var(--fg);text-align:center;transition:background 120ms ease,border-color 120ms ease;}
a.sym{cursor:pointer;text-decoration:none;}
.sym:hover{background:var(--bg-muted);border-color:var(--border-strong);}
.sym:focus-within{border-color:var(--accent);}
/* Primary affordance: the glyph copies. It fills the tile so the target is large. */
.sym-copy{display:flex;align-items:center;justify-content:center;width:100%;flex:1 1 auto;min-height:44px;padding:4px 0;background:none;border:0;border-radius:var(--radius-sm);color:inherit;cursor:pointer;}
.sym-copy:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.sym-copy .g{font-family:var(--mono);font-size:2rem;line-height:1;}
/* Secondary affordance: the name navigates to the symbol page. */
.sym .n,.sym-name{font-size:.8rem;color:var(--fg-muted);line-height:1.2;text-decoration:none;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.sym-name:hover{color:var(--accent);text-decoration:underline;}
.sym-name:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.sym .c{font-family:var(--mono);font-size:.75rem;color:var(--fg-muted);background:var(--bg-inset);border:1px solid var(--border);border-radius:6px;padding:2px 6px;margin-top:2px;}
.noscript-notice{padding:16px;background:var(--warn-subtle);border:1px solid var(--border);border-radius:var(--radius);color:var(--warn);margin-top:16px;}
.group-directory,.guide-directory,.method-section{background:var(--bg-subtle);}
.group-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;}
.group-card{display:block;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:16px;text-decoration:none;color:var(--fg);transition:background 120ms ease,border-color 120ms ease;}
.group-card:hover{background:var(--bg-muted);border-color:var(--border-strong);}
.group-card h3{margin:0 0 4px;font-size:1rem;}
.group-card p{margin:0;font-size:.875rem;color:var(--fg-muted);}
.group-card .count{font-size:.75rem;text-transform:uppercase;letter-spacing:0.06em;color:var(--fg-subtle);margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;}
.guide-card{display:block;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:16px;text-decoration:none;color:var(--fg);transition:background 120ms ease,border-color 120ms ease;}
.guide-card:hover{background:var(--bg-muted);border-color:var(--border-strong);}
.guide-card h3{margin:0 0 6px;font-size:1rem;}
.guide-card p{margin:0;font-size:.875rem;color:var(--fg-muted);}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);}
table{width:100%;border-collapse:collapse;background:var(--bg);}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:.9375rem;}
th{font-weight:600;background:var(--bg-subtle);color:var(--fg);}
thead th{position:sticky;top:0;z-index:10;border-bottom:1px solid var(--border-strong);}
tbody tr:nth-child(even){background:var(--bg-subtle);}
caption{padding:12px;text-align:left;font-size:.875rem;color:var(--fg-muted);caption-side:top;}
.breadcrumb{font-size:.875rem;color:var(--fg-muted);margin-bottom:16px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0;}
.breadcrumb li:not(:last-child)::after{content:"›";margin-left:8px;color:var(--fg-subtle);}
.breadcrumb a{color:var(--fg-muted);text-decoration:none;}
.breadcrumb a:hover{color:var(--accent);}
.glyph-panel{display:flex;justify-content:center;margin:24px 0 32px;}
.glyph-display{color:var(--fg);display:flex;flex-direction:column;align-items:center;gap:12px;width:min(280px,100%);min-height:180px;padding:24px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;transition:background 120ms ease,border-color 120ms ease;}
.glyph-display:hover{background:var(--bg-muted);border-color:var(--border-strong);}
.glyph-display .glyph{font-family:var(--mono);font-size:clamp(4rem,10vw,6rem);line-height:1;}
.glyph-hint{font-size:.875rem;color:var(--fg-muted);}
.codes-section,.howto-section,.related-section,.faq-section{padding-block:0;margin-top:clamp(32px,4vw,48px);}
.codes-table th:first-child,.codes-table td:first-child{width:30%;}
.codes-table td:first-child{color:var(--fg-muted);}
.chip{display:inline-block;font-family:var(--mono);font-size:.8rem;color:var(--fg);background:var(--bg-inset);border:1px solid var(--border);border-radius:6px;padding:2px 8px;cursor:pointer;}
.chip:hover{background:var(--bg-muted);}
.missing-note{padding:16px;background:var(--warn-subtle);border:1px solid var(--border);border-radius:var(--radius);color:var(--warn);margin-top:16px;}
.missing-note:empty{display:none;}
.steps{padding-left:24px;margin:0 0 16px;}
.steps li{margin-bottom:10px;}
kbd{font-family:var(--mono);font-size:.85em;background:var(--bg-inset);border:1px solid var(--border-strong);border-radius:4px;padding:1px 5px;box-shadow:0 1px 0 var(--border-strong);}
pre{background:var(--bg-inset);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px;overflow-x:auto;font-family:var(--mono);font-size:.875rem;line-height:1.5;}
code{font-family:var(--mono);font-size:.9em;background:var(--bg-inset);border-radius:4px;padding:1px 4px;}
pre code{background:transparent;padding:0;}
.faq-section h3{margin-top:20px;}
.faq-section p{margin-left:0;}
.prev-next{display:flex;justify-content:space-between;gap:16px;margin-top:40px;flex-wrap:wrap;}
.back-link{margin-top:20px;}
.guide-body{max-width:720px;}
.guide-body h2{margin-top:40px;}
.guide-body h3{margin-top:28px;}
.guide-body blockquote{border-left:4px solid var(--accent);margin:16px 0;padding:8px 16px;background:var(--accent-subtle);border-radius:0 var(--radius-sm) var(--radius-sm) 0;}
.guide-body ul,.guide-body ol{padding-left:24px;margin:0 0 16px;}
.guide-body li{margin-bottom:6px;}
.guide-nav{margin-top:48px;padding-top:32px;border-top:1px solid var(--border);}
.guide-nav ul{padding-left:0;list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:8px;}
.guide-nav a{text-decoration:none;}
.guide-nav a:hover{text-decoration:underline;}
.copy-status{position:fixed;bottom:16px;right:16px;z-index:100;padding:10px 16px;background:var(--ok-subtle);color:var(--ok);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-md);font-size:.875rem;transform:translateY(120%);opacity:0;transition:transform 160ms ease,opacity 160ms ease;}
.copy-status.show{transform:translateY(0);opacity:1;}
.site-footer{background:var(--bg-subtle);border-top:1px solid var(--border);padding-block:40px;}
.site-footer p{color:var(--fg-muted);font-size:.9rem;max-width:680px;margin-bottom:12px;}
.site-footer nav{display:flex;flex-wrap:wrap;gap:12px 20px;margin-bottom:16px;}
.site-footer a{color:var(--fg-muted);text-decoration:none;font-size:.875rem;}
.site-footer a:hover{color:var(--accent);}
.footer-small{font-size:.8rem;color:var(--fg-subtle);}
.recent-copied{margin-top:48px;}
.result-count[aria-live]{min-width:120px;text-align:right;}
.btn{display:inline-flex;align-items:center;justify-content:center;height:36px;padding:0 16px;font-size:.875rem;font-weight:500;border-radius:var(--radius-sm);text-decoration:none;border:1px solid transparent;transition:background 120ms ease,border-color 120ms ease,color 120ms ease;}
.btn.primary{background:var(--accent);color:var(--accent-fg);border-color:var(--accent);}
.btn.primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);}
.btn.secondary{background:var(--bg);color:var(--fg);border-color:var(--border-strong);}
.btn.secondary:hover{background:var(--bg-muted);}
@media (max-width:640px){
  .symbol-grid{grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px;}
  .sym{min-height:84px;padding:8px;}
  .sym .g{font-size:1.6rem;}
  th,td{padding:8px;font-size:.875rem;}
  .filter-row{gap:8px 12px;}
}

/* All-symbols hub: block jump nav and block sections */
/* ---------------------------------------------------------------------------
   Interaction states (Material 3). M3 specifies hover, focus AND pressed for
   every interactive element, each with a state layer. The site had hover and
   focus but no pressed state anywhere, so a tap gave no immediate feedback.
   One overlay rule keeps the states identical across every interactive surface.
   --------------------------------------------------------------------------- */
.sym-copy,.chip,.btn,.theme-toggle,.nav-toggle{position:relative;isolation:isolate;}
.sym-copy::after,.chip::after,.btn::after,.theme-toggle::after,.nav-toggle::after{content:"";position:absolute;inset:0;border-radius:inherit;background:currentColor;opacity:0;pointer-events:none;transition:opacity 120ms ease;}
.sym-copy:hover::after,.chip:hover::after,.btn:hover::after,.theme-toggle:hover::after,.nav-toggle:hover::after{opacity:.08;}
.sym-copy:active::after,.chip:active::after,.btn:active::after,.theme-toggle:active::after,.nav-toggle:active::after{opacity:.12;}
.sym-copy:active,.chip:active,.theme-toggle:active,.nav-toggle:active{transform:none;}
@media (prefers-reduced-motion:reduce){.sym-copy::after,.chip::after,.btn::after,.theme-toggle::after,.nav-toggle::after{transition:none;}}

.block-jump{display:flex;flex-wrap:wrap;gap:6px 10px;margin-top:20px;}
.block-jump a{font-size:.8rem;color:var(--fg-muted);text-decoration:none;border:1px solid var(--border);border-radius:6px;padding:2px 8px;}
.block-jump a:hover{color:var(--fg);border-color:var(--border-strong);background:var(--bg-muted);}
.block-section{margin-top:clamp(28px,3vw,40px);}
.block-section h2{display:flex;align-items:baseline;gap:8px;}
.block-section h2 .count{font-size:.8rem;font-weight:500;color:var(--fg-subtle);}
/* Hamburger toggle + mobile nav dropdown. The nav is only lifted out of the
   header row when JS is present, so a no-JS visitor still gets a wrapping nav.
   The header keeps a single row here, which is what lets --header-h stay 56px
   and stop the sticky search panel sliding under it. */
.nav-toggle{display:none;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);color:var(--fg);cursor:pointer;}
.nav-toggle:hover{background:var(--bg-muted);}
.nav-toggle .bars{display:block;position:relative;width:18px;height:14px;}
.nav-toggle .bars span{position:absolute;left:0;right:0;height:2px;background:currentColor;border-radius:2px;transition:transform 160ms ease,opacity 120ms ease;}
.nav-toggle .bars span:nth-child(1){top:0;}
.nav-toggle .bars span:nth-child(2){top:6px;}
.nav-toggle .bars span:nth-child(3){top:12px;}
.site-header[data-nav-open] .nav-toggle .bars span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.site-header[data-nav-open] .nav-toggle .bars span:nth-child(2){opacity:0;}
.site-header[data-nav-open] .nav-toggle .bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
@media (prefers-reduced-motion:reduce){.nav-toggle .bars span{transition:none;}}

@media (max-width:839px){
  .nav-toggle{display:inline-flex;}
  .no-js .nav-toggle{display:none;}
  .no-js .site-nav{flex-wrap:wrap;gap:10px;justify-content:flex-end;}
  .js .site-nav{position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;align-items:stretch;gap:0;background:var(--bg);border-bottom:1px solid var(--border);box-shadow:var(--shadow-md);padding:6px clamp(16px,4vw,32px) 10px;}
  .js .site-header[data-nav-open] .site-nav{display:flex;}
  .js .site-nav a{padding:12px 0;font-size:1rem;border-bottom:1px solid var(--border);}
  .js .site-nav a:last-child{border-bottom:0;}
}

/* Touch targets. Measured before this change: the code chip was 79x25 and both
   header buttons 36x36, all under the 44px minimum (WCAG 2.5.5, M3 48dp).
   Desktop keeps the compact densities - a mouse does not need 44px. */
@media (max-width:839px){
  .chip{display:inline-flex;align-items:center;min-height:44px;padding:8px 12px;}
  .theme-toggle,.nav-toggle{width:44px;height:44px;}
  .block-jump a{display:inline-flex;align-items:center;min-height:44px;padding:8px 12px;}
  .codes-table td,.codes-table th{padding-block:12px;}
}
@media (pointer:coarse){
  .chip{display:inline-flex;align-items:center;min-height:44px;padding:8px 12px;}
  .theme-toggle,.nav-toggle{width:44px;height:44px;}
  .block-jump a{display:inline-flex;align-items:center;min-height:44px;padding:8px 12px;}
}