:root{--bg: #0e1b16;--panel: #16261f;--grid: #1f3a2e;--cell: #294a3a;--ink: #eaf6ee;--dim: #9fc4af;--accent: #3fd99b;--affix: #f2b84b}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(900px 560px at 50% -8%,#13241c,var(--bg));color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,sans-serif;display:flex;justify-content:center;-webkit-user-select:none;user-select:none}#app{width:100%;max-width:540px;padding:12px 12px 26px}header{text-align:center;margin-bottom:6px}h1{margin:0;font-size:32px;letter-spacing:1px;font-weight:800;color:var(--accent)}.sub{margin:2px 0 0;color:var(--dim);font-size:13px}.bar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;margin:9px 0}.seg{display:inline-flex;background:var(--panel);border:1px solid var(--grid);border-radius:999px;overflow:hidden}.seg button{background:none;border:none;color:var(--dim);padding:6px 13px;font:600 13px system-ui;cursor:pointer}.seg button.active{background:var(--accent);color:#10221a}.btn{background:var(--panel);border:1px solid var(--grid);color:var(--ink);padding:7px 14px;border-radius:999px;font:700 13px system-ui;cursor:pointer}.btn:hover{border-color:var(--accent)}.scoreboard{display:flex;gap:8px;justify-content:center;margin:8px 0;flex-wrap:wrap}.readout{background:var(--panel);border:1px solid var(--grid);border-radius:8px;padding:5px 14px;font:800 19px ui-monospace,monospace;color:var(--accent);min-width:74px;text-align:center}.readout span{color:var(--dim);font-size:10px;display:block;font-weight:600;letter-spacing:.5px}.play{display:flex;gap:12px;justify-content:center;align-items:flex-start}.stage{position:relative}.grid{background:var(--grid);border-radius:12px;padding:6px;display:grid;grid-template-columns:repeat(6,1fr);gap:5px;width:min(62vw,330px);aspect-ratio:6 / 12}.cell{background:var(--cell);border-radius:6px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:clamp(11px,3.4vw,18px);color:#0e1b16;letter-spacing:.3px;aspect-ratio:1}.cell.e{background:#ffffff09}.cell.filled{background:var(--accent);color:#0e1b16;box-shadow:inset 0 -3px #0000002e}.cell.filled.affix{background:var(--affix);color:#2a1c02}.cell.cur{box-shadow:0 0 0 2px #fff inset,0 0 14px #3fd99bb3}.cell.ghost{background:#3fd99b1a;color:#eaf6ee52;border:1px dashed rgba(63,217,155,.4)}.cell.flash{animation:pop .28s ease;background:#fff;color:#10221a}@keyframes pop{0%{transform:scale(1)}45%{transform:scale(1.12);background:#fff}to{transform:scale(1)}}.side{display:flex;flex-direction:column;gap:10px;flex:1;min-width:120px;max-width:180px}.nextbox{background:var(--panel);border:1px solid var(--grid);border-radius:10px;padding:8px;text-align:center}.nextbox>span{color:var(--dim);font-size:10px;font-weight:700;letter-spacing:.5px;display:block;margin-bottom:6px}.nextchunk{background:var(--accent);color:#0e1b16;font-weight:800;border-radius:7px;padding:12px 0;font-size:18px}.nextchunk.affix{background:var(--affix);color:#2a1c02}.legend{background:var(--panel);border:1px solid var(--grid);border-radius:10px;padding:10px;font-size:12px;color:var(--dim)}.legend b{color:var(--ink);display:block;margin-bottom:4px}.legend p{margin:6px 0;line-height:1.4}.legend code{background:var(--grid);color:var(--accent);border-radius:4px;padding:1px 4px;font-size:11px}.banner{position:absolute;top:8px;left:50%;transform:translate(-50%);background:#10221aeb;border:1px solid var(--accent);color:var(--accent);padding:6px 14px;border-radius:999px;font:800 14px ui-monospace,monospace;white-space:nowrap;box-shadow:0 4px 18px #0006;animation:rise .3s ease}.banner.hidden{display:none}@keyframes rise{0%{transform:translate(-50%,6px);opacity:0}to{transform:translate(-50%);opacity:1}}.controls{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;max-width:330px;margin:14px auto 0}.pad{background:var(--panel);border:1px solid var(--grid);color:var(--ink);border-radius:10px;padding:12px 0;font:700 18px system-ui;cursor:pointer}.pad:hover{border-color:var(--accent)}.pad.wide{grid-column:1 / -1;font-size:15px}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#08100cd1;border-radius:12px;backdrop-filter:blur(3px)}.overlay.hidden{display:none}.card{background:var(--panel);border:1px solid var(--grid);border-radius:16px;padding:22px 26px;text-align:center;max-width:300px}.card h2{margin:0 0 6px;font-size:24px;color:var(--accent)}.card p{margin:6px 0;color:var(--dim);font-size:14px}.card b{color:var(--ink)}.card .row{display:flex;gap:8px;justify-content:center;margin-top:14px}.hint{text-align:center;color:var(--dim);font-size:12px;margin-top:12px}@media(max-width:460px){.legend{display:none}.side{max-width:110px}}