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0}.flap[data-in]{animation:flap-in .26s var(--ease-out)}@keyframes flap-in{0%{transform:rotateX(-80deg);opacity:.2;filter:brightness(1.8)}to{transform:none;opacity:1;filter:none}}.hold{height:4px;margin-top:10px;border-radius:2px;background:var(--amber-dim);overflow:hidden;opacity:0;transition:opacity .16s}.hold i{display:block;height:100%;background:var(--amber);box-shadow:0 0 8px var(--amber-glow);transform:scaleX(var(--p, 0));transform-origin:right}.app[data-holding] .hold{opacity:1}.board-sub{margin:6px 0 0;font-size:1rem;line-height:1.6;color:var(--paper-2);min-height:1.6em}.speaking{flex:none;width:40px;height:40px;fill:none;stroke:var(--amber-dim);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:stroke .16s var(--ease-out)}.speaking .cone{fill:currentColor;color:var(--amber-dim)}.app[data-speaking] .speaking{stroke:var(--amber);filter:drop-shadow(0 0 6px var(--amber-glow))}.app[data-speaking] .speaking .cone{color:var(--amber)}.app[data-speaking] .speaking 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svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.guide-title{margin:0;font-size:1.375rem;font-weight:700;color:var(--amber)}.guide-count{margin-inline-start:auto;font-size:.875rem;color:var(--paper-2)}.guide-list,.sign-detail{max-width:1100px;margin:0 auto;padding-top:20px}.howto{padding:18px 20px;border-radius:6px;background:#050505;box-shadow:inset 0 0 0 1px var(--metal)}.howto h3{margin:0 0 10px;font-size:1.125rem;font-weight:700}.howto ol{display:grid;gap:8px;margin:0;padding-inline-start:1.4em;line-height:1.7;color:var(--paper-2);max-width:70ch}.howto li::marker{color:var(--amber);font-weight:700}.howto strong{color:var(--paper);font-weight:600}.howto-note{margin:14px 0 0;padding-top:12px;border-top:1px solid var(--metal);color:var(--amber);line-height:1.7;max-width:70ch}.guide-tools{display:grid;gap:12px;margin:24px 0 16px}.guide-search{display:flex;align-items:center;gap:10px;min-height:52px;padding:0 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0}.sign-detail{display:grid;gap:20px}.detail-stage{position:relative;border-radius:6px;background:#050505;box-shadow:inset 0 0 0 1px var(--metal);background-image:radial-gradient(rgb(255 255 255 / .035) 1px,transparent 1.2px);background-size:5px 5px}.detail-stage canvas{display:block;width:100%;aspect-ratio:4 / 3;max-height:60dvh}.detail-side{position:absolute;bottom:10px;font-size:.8125rem;color:var(--paper-2)}.detail-side-right{right:12px;color:var(--amber)}.detail-side-left{left:12px}.detail-word{margin:0;font-size:clamp(2.5rem,10vw,4.5rem);font-weight:800;line-height:1.2;color:var(--amber);text-shadow:0 0 18px var(--amber-glow)}.detail-cat{margin:4px 0 0;color:var(--paper-2)}.detail-example{margin:14px 0 0;font-size:1.125rem;line-height:1.7}.detail-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.detail-try{flex:1 1 100%}.detail-actions .tray-btn[aria-pressed=true]{color:var(--ground);background:var(--amber);box-shadow:none}.detail-hint{margin:14px 0 0;font-size:.9375rem;color:var(--paper-2)}@media(min-width:900px){.sign-detail{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);align-items:start}}@media(min-width:900px)and (min-aspect-ratio:4/3){.app{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);grid-template-rows:auto minmax(0,1fr) auto auto;max-width:1280px}.bar-top{grid-column:1 / -1}.stage-row{grid-row:2 / 5}.board{display:flex;flex-direction:column;justify-content:center;padding:32px}.board-line{font-size:clamp(3rem,5.5vw,6rem)}.controls{align-self:end}}@media(prefers-reduced-motion:reduce){.flap[data-in],.app[data-speaking] .speaking .wave{animation:none}.segments i,.go{transition:none}}.guide-panel[hidden]{display:none}.gesture-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:10px;margin:20px 0 0;padding:0;list-style:none}.gesture{display:flex;gap:16px;align-items:flex-start;padding:16px;border-radius:6px;background:#050505;box-shadow:inset 0 0 0 1px 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