:root{--bg: #0f1319;--panel: #182029;--line: #2c3945;--ink: #e8eef4;--dim: #93a4b4;--accent: #7fd1e8;--stone: #8b97a4;--stoneline: #b9c5d1;--blank: #131a21;--gold: #f2c14e;--good: #7fd6a0;--bad: #f0806c;--cell: 42px}*{box-sizing:border-box}body{margin:0;background:radial-gradient(1200px 600px at 50% -10%,#1c2732 0%,var(--bg) 60%);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,Helvetica Neue,sans-serif;line-height:1.65}main{max-width:900px;margin:0 auto;padding:2.2rem 1.2rem 4rem}header h1{font-size:2.1rem;margin:0 0 .5rem;letter-spacing:-.02em}header h1 span{color:var(--accent)}.sub{color:var(--dim);margin:0 0 1.4rem;font-size:.95rem}.sub strong{color:var(--ink)}.sub em{color:var(--accent);font-style:italic}#wrap{display:flex;justify-content:center;gap:1.6rem;flex-wrap:wrap;align-items:flex-start}.stage{position:relative;padding:10px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.stage h3{margin:0 0 .5rem;font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);text-align:center}.grid{display:grid;gap:0;position:relative;border:4px solid #dde8f1}.cell{width:var(--cell);height:var(--cell);position:relative;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;font-size:.95rem;font-weight:600;color:var(--gold);background:#1a232c;border-top:1px solid #26313b;border-left:1px solid #26313b;-webkit-user-select:none;user-select:none;touch-action:none;cursor:pointer}.cell.wall-t{border-top:4px solid #dde8f1}.cell.wall-l{border-left:4px solid #dde8f1}.cell.stone{background:linear-gradient(160deg,#5d7386,#3d4e5c);box-shadow:inset 0 0 0 1px #7e93a5;color:#eaf2f8}.cell.blank:after{content:"";width:5px;height:5px;border-radius:50%;background:#33414e;position:absolute}.cell.blank.clue:after{display:none}.cell .label{position:relative;z-index:1;letter-spacing:-.03em}.cell.stone .label{color:#ffd98a}.grid .waterline{position:absolute;left:0;right:0;height:0;border-top:2px dashed var(--accent);pointer-events:none;z-index:3}.drop .cell{cursor:default}.drop.filled{box-shadow:0 0 0 2px var(--good)}.drop.filled .cell.stone{background:linear-gradient(160deg,#6fc79b,#3f9a6f);box-shadow:inset 0 0 0 1px #9fe0bb}.cols{display:grid;gap:0;margin-top:4px}.cols i{width:var(--cell);height:20px;display:flex;align-items:center;justify-content:center;font-size:.72rem;font-style:normal;font-variant-numeric:tabular-nums;color:var(--dim)}.cols i.ok{color:var(--good)}.cols i.over{color:var(--bad)}.cell.hintflash{outline:3px solid var(--accent);outline-offset:-3px;z-index:2}.legend{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center;margin:1rem 0 0;color:var(--dim);font-size:.82rem}.legend span b{color:var(--ink);font-weight:600}.legend .swatch{display:inline-block;width:.85em;height:.85em;border-radius:3px;vertical-align:-1px;margin-right:.3em}.legend .swatch.stone{background:linear-gradient(160deg,#5d7386,#3d4e5c)}.legend .swatch.blank{background:var(--blank);border:1px solid #33414e}.legend .swatch.line{background:transparent;border-top:2px dashed var(--accent);border-radius:0;height:0}.hud{text-align:center;min-height:1.6rem;margin:.9rem 0 .2rem;color:var(--dim);font-size:.9rem}.hud .win{color:var(--good)}.hud .err{color:var(--bad)}.controls{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;justify-content:center;margin:.8rem 0 1.6rem}label{color:var(--dim);font-size:.85rem}select,button{font:inherit;font-size:.85rem;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:.35rem .7rem;cursor:pointer}button:hover,select:hover{border-color:var(--accent)}.notes h2{font-size:1.05rem;margin:2rem 0 .5rem;color:var(--accent)}.notes p{color:var(--dim);font-size:.92rem}.notes strong{color:var(--ink)}.notes code{background:#1d2731;border-radius:4px;padding:0 .3em;color:var(--gold)}.notes figure{margin:.9rem 0;display:flex;gap:1.4rem;flex-wrap:wrap;justify-content:center;align-items:center}.notes figcaption{width:100%;text-align:center;color:var(--dim);font-size:.8rem}.mini{display:grid;gap:0;border:2px solid #58697a}.mini i{width:19px;height:19px;background:var(--blank);border:1px solid #26313b}.mini i.on{background:linear-gradient(160deg,#5d7386,#3d4e5c)}.mini.bad i.on{background:linear-gradient(160deg,#f0a08c,#c9705c)}.arrow{color:var(--dim);font-size:1.4rem}footer{margin-top:2.4rem;border-top:1px solid var(--line);padding-top:1rem;color:var(--dim);font-size:.82rem}@media (max-width: 720px){:root{--cell: 30px}.cell{font-size:.75rem}}