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24px}.board{position:relative}.board:before{content:"";top:.75em;bottom:.75em;left:calc(var(--rod-x) - 1px);background:var(--spine);border-radius:1px;width:2px;position:absolute}.axis-label{padding:2px 0 2px calc(var(--rod-x) + 18px);color:var(--muted);margin:0;font-size:.95rem;font-weight:700;position:relative}.axis-label:before{content:"";top:50%;left:calc(var(--rod-x) - 7px);background:var(--spine);border-radius:1px;width:14px;height:2px;position:absolute}.stack{flex-direction:column;gap:10px;margin:10px 0;padding:0;list-style:none;display:flex}.card{min-height:66px;padding:8px 6px 8px calc(var(--rod-x) + 16px);border:2px solid var(--card-border);border-radius:var(--radius);background:var(--card-bg);color:var(--card-text);box-shadow:var(--card-shadow);align-items:center;gap:10px;display:flex;position:relative}.card-hole{top:50%;left:calc(var(--rod-x) - 2px - 7px);border:1.5px solid var(--card-border);background:var(--bg);width:14px;height:14px;transition:background .25s var(--ease-out), border-color .25s var(--ease-out);border-radius:50%;margin-top:-7px;position:absolute;box-shadow:inset 0 1px 2px oklch(15% .04 258/.25)}.card-sortable{touch-action:none;-webkit-user-select:none;user-select:none;cursor:grab}.card-sortable:hover{border-color:var(--spine)}.card-sortable.dragging{z-index:var(--z-raised);cursor:grabbing;border-color:var(--text);box-shadow:0 10px 24px oklch(15% .04 258/.28)}.card-icon{flex-shrink:0;font-size:1.3rem}.card-title{min-width:0;font-family:var(--font-serif);text-wrap:pretty;flex:1;font-size:1.125rem;font-weight:600;line-height:1.25}.card-moves{flex-shrink:0;display:flex}.move-button{border-radius:var(--radius);width:40px;height:44px;color:var(--card-text);background:0 0;border:0;place-items:center;padding:0;display:grid}.move-button:hover:not(:disabled){background:oklch(25% .05 258/.08)}.move-button:disabled{opacity:.25;cursor:default}.reveal-card{transition:background .25s var(--ease-out), border-color .25s var(--ease-out), color .25s var(--ease-out);padding-right:14px}.card-year{max-width:40%;font-family:var(--font-serif);font-variant-numeric:oldstyle-nums proportional-nums;text-align:right;animation:stamp .45s var(--ease-out) both;flex-shrink:0;font-size:1.15rem;font-weight:800}@keyframes stamp{0%{opacity:0;filter:blur(2px);transform:scale(1.6)rotate(-6deg)}}.result-correct{background:var(--correct);border-color:var(--correct);color:var(--on-correct)}.reveal-card.revealed .card-hole{box-shadow:none}.result-correct .card-hole{border-color:var(--on-correct);background:var(--on-correct)}.result-close{background:var(--close);border-color:var(--close-edge);color:var(--on-close)}.result-close .card-hole{border-color:var(--on-close);background:linear-gradient(90deg, var(--on-close) 50%, var(--close) 50%)}.result-far{border-color:var(--far-edge);box-shadow:none;color:var(--on-far);background:0 0;border-style:dashed}.result-far .card-hole{background:var(--bg);border-color:currentColor}.primary-button,.secondary-button,.share-button{border-radius:var(--radius);min-height:50px;transition:background .15s var(--ease-out), transform .15s var(--ease-out);justify-content:center;align-items:center;gap:8px;padding:0 22px;font-size:1.0625rem;font-weight:700;display:inline-flex}.primary-button,.share-button{background:var(--accent);color:var(--on-accent);border:0}.secondary-button{border:2px solid var(--border);background:0 0}.secondary-button:hover{background:var(--surface)}.primary-button:hover,.share-button:hover{background:color-mix(in oklch, var(--accent), var(--stamp) 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104px;font-size:1.1rem;font-weight:800}.answer-year-correct:after{content:" ✓";color:var(--stamp)}.answer-text{flex-direction:column;gap:2px;display:flex}.answer-title{font-weight:500}.answer-note{color:var(--muted);font-size:.95rem}.fact-card{border:2px solid var(--card-border);border-radius:var(--radius);background:var(--card-bg);color:var(--card-text);box-shadow:var(--card-shadow);margin:0 0 28px;padding:16px 18px 18px}.fact-label{border:1.5px solid var(--stamp-on-card);color:var(--stamp-on-card);border-radius:3px;margin:0 0 8px;padding:0 8px;font-size:.9rem;font-weight:700;display:inline-block;transform:rotate(-2deg)}.fact-text{max-width:60ch;font-family:var(--font-serif);text-wrap:pretty;margin:0;font-size:1.2rem;font-weight:500;line-height:1.4}.share-button{width:100%;min-height:54px}.manual-share{flex-direction:column;gap:6px;margin:16px 0 0;display:flex}.manual-share textarea{font:inherit;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);resize:none;padding:8px}.countdown{border-top:1px solid var(--border);color:var(--muted);justify-content:space-between;align-items:baseline;gap:12px;margin:20px 0 0;padding-top:14px;display:flex}.countdown-time{font-family:var(--font-serif);color:var(--text);font-variant-numeric:lining-nums tabular-nums;font-size:1.4rem;font-weight:800}.modal{border:1px solid var(--border);background:var(--bg-raised);width:min(100% - 32px,460px);max-height:calc(100dvh - 32px);color:var(--text);border-radius:10px;padding:0;box-shadow:0 16px 48px oklch(15% .04 258/.3)}.modal[open]{animation:modal-in .22s var(--ease-out)}.modal[open]::backdrop{animation:fade-in .22s var(--ease-out)}@keyframes modal-in{0%{transform:translateY(10px)scale(.98)}}@keyframes fade-in{0%{opacity:0}}.modal::backdrop{background:var(--backdrop)}.modal-small{width:min(100% - 32px,360px)}.modal-body{padding:10px 20px 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(prefers-reduced-motion:reduce){*,:before,:after{transition-duration:0s!important;animation-duration:0s!important}}