:root{--fir: #046a38;--hydro: #449dd1;--hydro-deep: #1f5c94;--gold: #f4b223;--paper: #faf7f0;--ink: #0a1f16;--silver: #d8dde2;--cell: clamp(24px, 8.5vw, 36px)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--paper);color:var(--ink);font-family:system-ui,sans-serif;line-height:1.5}.screen{max-width:40rem;margin:0 auto;padding:1.5rem 1.25rem 6.5rem}.screen.landing,.screen.intro,.screen.offline,.screen.completion{text-align:center;padding-top:18vh}.kicker{margin:0 0 .5rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.75rem;color:var(--fir)}h1{margin:0 0 .75rem;color:var(--fir);font-size:1.9rem}h3{margin:1rem 0 .35rem;font-size:1rem}.meta{color:var(--hydro-deep)}.notice{background:#fff3cd;border:1px solid var(--gold);border-radius:8px;padding:.6rem .9rem}form{display:flex;gap:.5rem;justify-content:center;flex-wrap:wrap;margin:1rem 0}input:not([type=checkbox]):not([type=radio]){font:inherit;padding:.55rem .8rem;border:2px solid 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0}.history-sheet{max-height:80dvh}.history-step{height:100dvh;border-radius:0}.history-step .grid-viewport{flex:1;height:auto}.history-step .clue-list{flex:none;max-height:45dvh}.history-panel h2{margin:0;padding:1rem 1.25rem .5rem;color:var(--fir);font-size:1.2rem}.history-list{list-style:none;margin:0;padding:0 1.25rem .5rem;overflow-y:auto}.history-list li{border-bottom:1px solid var(--silver)}.history-list li:last-child{border-bottom:none}.history-list button{display:block;width:100%;text-align:left;background:transparent;border:none;border-radius:0;padding:.75rem .25rem;font-size:1.05rem}.history-body{flex:1;overflow-y:auto;padding:1.25rem}.history-body .hint{margin-top:1rem}.history-panel .app-footer{position:static;flex:none}@media(prefers-reduced-motion:no-preference){.history-panel{animation:history-rise .2s ease-out}@keyframes history-rise{0%{transform:translateY(30px);opacity:.6}to{transform:none;opacity:1}}}