:root{--color-paper:oklch(95% .025 88);--color-paper-deep:oklch(88% .035 88);--color-ink:oklch(23% .025 125);--color-muted:oklch(42% .035 125);--color-rule:oklch(77% .035 88);--color-accent:oklch(80% .17 112);--color-accent-dark:oklch(37% .09 112);--color-yellow:oklch(82% .17 88);--color-red:oklch(63% .18 35);--color-orange:oklch(70% .15 65);--color-green:oklch(66% .12 135);--color-blue:oklch(66% .1 245);--color-monitor:oklch(20% .025 125);--color-monitor-muted:oklch(80% .035 115);--color-monitor-subtle:oklch(68% .035 115);--color-monitor-unit:oklch(84% .025 95);--color-on-alert:oklch(100% 0 0);--color-message-bg:oklch(89% .055 35);--color-message-ink:oklch(32% .11 35);--color-hover-accent:oklch(84% .17 112);--color-map:oklch(91% .03 88);--color-level-blue:oklch(89% .035 245);--color-level-green:oklch(88% .055 135);--color-level-yellow:oklch(91% .11 88);--color-level-orange:oklch(87% .09 65);--color-level-red:oklch(82% .09 35);--font-display:"Arial Narrow", "Avenir Next Condensed", 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3fr;display:grid}.eyebrow,.section-kicker,.monitor-label,.panel-meta,.count-badge,.state-code{color:var(--color-muted);letter-spacing:.12em;text-transform:uppercase;font-size:.68rem;font-weight:750;line-height:1.2}.intro-copy{max-width:42rem;font:clamp(1.2rem, 2vw, 1.8rem)/1.05 var(--font-display);letter-spacing:-.02em;margin:0}.mode-nav{gap:var(--space-5);padding:var(--space-3) 0;border-bottom:var(--rule-thin);display:flex}.mode-tab{color:var(--color-muted);letter-spacing:.08em;text-transform:uppercase;white-space:nowrap;background:0 0;border:0;border-bottom:2px solid #0000;padding:0 0 .45rem;font-size:.78rem;font-weight:750}.mode-tab.is-active{border-bottom-color:var(--color-ink);color:var(--color-ink)}.mode-tab:active{transform:translateY(1px)}.global-message{margin-top:var(--space-3);padding:var(--space-2) var(--space-3);border-left:4px solid var(--color-red);background:var(--color-message-bg);color:var(--color-message-ink)}.view{padding:var(--space-7) 0 var(--space-8)}.view-heading{justify-content:space-between;align-items:end;gap:var(--space-5);margin-bottom:var(--space-5);display:flex}h1,h2,p{margin-top:0}h1{overflow-wrap:anywhere;min-width:0;max-width:11ch;font:900 clamp(3.4rem, 9vw, 8.3rem)/1 var(--font-display);letter-spacing:-.065em;text-transform:uppercase;margin-bottom:0}h1 span{color:var(--color-muted)}h2{overflow-wrap:anywhere;min-width:0;font:900 clamp(1.5rem, 3vw, 2.5rem)/1 var(--font-display);letter-spacing:-.04em;text-transform:uppercase;margin-bottom:0}.heading-aside{max-width:20rem;margin-bottom:var(--space-1);color:var(--color-muted);font-size:.85rem}.classroom-grid{gap:var(--space-3);grid-template-columns:minmax(0,2.1fr) minmax(18rem,.9fr);display:grid}.monitor-card{min-height:34rem;padding:var(--space-5);border:1px solid 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blink}.monitor-label{color:var(--color-monitor-subtle)}.monitor-reading{z-index:2;margin:var(--space-5) 0 0;color:var(--color-accent);font:900 clamp(6rem, 18vw, 14rem)/1 var(--font-display);letter-spacing:-.1em;position:relative}.db-unit{margin-left:var(--space-2);color:var(--color-monitor-unit);font:700 clamp(1.1rem, 2vw, 1.6rem)/1 var(--font-body);letter-spacing:0}.face-field{inset:var(--space-8) var(--space-4) var(--space-6);opacity:.96;position:absolute;overflow:hidden}.monitor-canvas{width:100%;height:100%;display:block}.fullscreen-status{display:none}.fullscreen-alert{z-index:2;border-left:5px solid var(--color-on-alert);background:var(--color-red);color:var(--color-on-alert);font:900 clamp(1.2rem, 3vw, 2rem)/1 var(--font-display);letter-spacing:-.02em;text-transform:uppercase;padding:.6rem .8rem;display:block;position:absolute;bottom:0;right:0}.monitor-card[data-alert=true]:before{background:var(--color-red);width:100%;height:5px}.monitor-card[data-alert=true] .monitor-status-row h2,.monitor-card[data-alert=true] .state-code{color:var(--color-red)}.monitor-status-row{margin-top:var(--space-6);align-items:end}.monitor-status-row .eyebrow{color:var(--color-monitor-subtle);margin-bottom:.35rem}.monitor-status-row h2{color:var(--color-paper)}.state-code{color:var(--color-accent)}.monitor-actions{margin-top:var(--space-4);justify-content:flex-start}.button{min-height:2.8rem;padding:var(--space-2) var(--space-3);border-radius:var(--radius-small);letter-spacing:.02em;white-space:nowrap;border:1px solid;font-size:.78rem;font-weight:800}.button-primary{background:var(--color-accent);border-color:var(--color-accent);color:var(--color-ink)}.button-quiet{color:inherit;background:0 0}.classroom-aside{gap:var(--space-3);flex-direction:column;display:flex}.limit-card{padding:var(--space-4);border-top:5px solid var(--color-accent-dark);background:var(--color-paper-deep)}.section-kicker{margin-bottom:var(--space-5);color:var(--color-muted);justify-content:space-between;display:flex}.limit-card label{max-width:13rem;font:900 1.8rem/1 var(--font-display);letter-spacing:-.04em;text-transform:uppercase;display:block}.limit-input-row{align-items:baseline;gap:var(--space-1);margin:var(--space-4) 0 var(--space-2);display:flex}.limit-input-row input{border:0;border-bottom:2px solid var(--color-ink);width:5.3rem;color:var(--color-ink);font:900 3.4rem/1 var(--font-display);background:0 0;border-radius:0;padding:0}.limit-input-row span{font-weight:750}.range-input{width:100%;accent-color:var(--color-accent-dark)}.range-input:focus-visible{outline:3px solid var(--color-red);outline-offset:4px}.small-note,.precision-note p{color:var(--color-muted);margin-bottom:0;font-size:.78rem}.precision-note{gap:var(--space-2);padding:var(--space-3) 0;border-top:var(--rule-thin);grid-template-columns:1.5rem 1fr;display:grid}.note-symbol{border:1px solid var(--color-ink);width:1.25rem;height:1.25rem;font:700 .75rem/1 var(--font-display);border-radius:50%;place-items:center;display:grid}.mapping-toolbar{align-items:center;gap:var(--space-5);padding:var(--space-3) 0;border-top:var(--rule-thin);border-bottom:var(--rule-thin);grid-template-columns:1fr auto auto;display:grid}.toolbar-state{font:900 1.55rem/1 var(--font-display);text-transform:uppercase;margin:.35rem 0 0}.toolbar-reading{font:900 4.5rem/1 var(--font-display);letter-spacing:-.08em}.toolbar-reading small{font:700 .8rem var(--font-body);letter-spacing:0;margin-left:.2rem}.toolbar-actions{gap:var(--space-1);display:flex}.measurement-form{align-items:end;gap:var(--space-2);padding:var(--space-3);background:var(--color-accent);grid-template-columns:1.15fr 1fr 1.25fr auto;display:grid}.form-heading{align-self:start}.form-heading .eyebrow{color:var(--color-accent-dark);margin-bottom:.35rem}.form-heading 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var(--font-body)!important;letter-spacing:.08em!important;display:flex!important}.sound-toggle input{width:1.25rem;height:1.25rem;accent-color:var(--color-accent-dark)}@media (width<=800px){.site-header,main,.site-footer{width:min(100% - 2rem,1440px)}.view{padding-top:var(--space-6)}.view-heading{display:block}.heading-aside{margin-top:1rem}.classroom-grid,.analytics-grid{grid-template-columns:minmax(0,1fr)}.monitor-card{min-height:31rem}.monitor-reading{margin-top:var(--space-6)}.face-field{inset:var(--space-8) var(--space-3) var(--space-7)}.mapping-toolbar{grid-template-columns:1fr auto}.toolbar-actions{grid-column:1/-1}.toolbar-reading{grid-area:1/2}.measurement-form{grid-template-columns:1fr 1fr}.measurement-form .form-heading,.measurement-form .button{grid-column:1/-1}.map-layout{grid-template-columns:minmax(0,1fr)}.map-legend{gap:var(--space-2);flex-wrap:wrap;display:flex}.map-legend .eyebrow{width:100%;margin-bottom:0}.map-legend div{margin-bottom:0}.monitor-card:fullscreen 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