:root{--ink:#262c40;--muted:#6b7390;--tutorial:#34c46c;--medium:#3d86ff;--hard:#ff4f5e;font-family:ui-rounded,SF Pro Rounded,PingFang SC,system-ui,sans-serif}*{box-sizing:border-box}html,body{height:100%;color:var(--ink);background:radial-gradient(circle at 30% 20%,#f4f1ff 0%,#e3e8f5 55%,#d5dcec 100%);margin:0}.page{justify-content:center;align-items:center;gap:40px;min-height:100%;padding:12px;display:flex}.phone{touch-action:manipulation;-webkit-user-select:none;user-select:none;background:#e8ecf5;border-radius:34px;position:relative;overflow:hidden;box-shadow:0 30px 60px #28325a47,0 0 0 10px #1f2433,0 0 0 12px #3a4158}canvas{cursor:pointer;display:block}.hud{pointer-events:none;justify-content:space-between;align-items:center;padding:0 4%;display:flex;position:absolute;left:0;right:0}.hud>*{pointer-events:auto}.hud-top{top:1.6%}.hud-bottom{justify-content:center;gap:4%;bottom:1.4%}.round-btn{cursor:pointer;background:#fff;border:none;border-radius:14px;place-items:center;width:44px;height:44px;display:grid;box-shadow:0 4px #c8cfe0,0 8px 16px #28325a24}.round-btn.small{border-radius:10px;width:34px;height:34px}.round-btn svg{fill:none;width:22px;height:22px;stroke:var(--ink);stroke-width:2.4px;stroke-linecap:round;stroke-linejoin:round}.round-btn:active,.pill-btn:active{transform:translateY(3px);box-shadow:0 1px #c8cfe0}.level-pill{background:#fff;border-radius:999px;align-items:center;gap:8px;padding:8px 16px;font-size:18px;font-weight:900;display:flex;box-shadow:0 4px #c8cfe0,0 8px 16px #28325a24}.band-chip{color:#fff;background:var(--muted);border-radius:999px;padding:3px 8px;font-size:12px;font-weight:800}.band-chip.band-tutorial{background:var(--tutorial)}.band-chip.band-medium{background:var(--medium)}.band-chip.band-hard{background:var(--hard)}.level-meta{text-align:center;color:var(--muted);pointer-events:none;font-size:12px;font-weight:700;position:absolute;top:18%;left:0;right:0}.pill-btn{font:inherit;color:var(--ink);cursor:pointer;background:#fff;border:none;border-radius:999px;padding:11px 26px;font-size:16px;font-weight:900;box-shadow:0 4px #c8cfe0,0 8px 16px #28325a24}.pill-btn.hint{background:#ffd24a;box-shadow:0 4px #d9a91f,0 8px 16px #28325a24}.pill-btn.primary{color:#fff;background:#3d86ff;box-shadow:0 4px #2256c4,0 8px 16px #28325a2e}.pill-btn:disabled{opacity:.6}.toast{color:#fff;opacity:0;pointer-events:none;white-space:nowrap;background:#1e2436e6;border-radius:14px;padding:10px 18px;font-weight:800;transition:opacity .2s,transform .2s;position:absolute;top:44%;left:50%;transform:translate(-50%,8px)}.toast.show{opacity:1;transform:translate(-50%)}.overlay{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#181e306b;place-items:center;display:grid;position:absolute;inset:0}.overlay.hidden{display:none}.card{text-align:center;background:#fff;border-radius:24px;width:82%;padding:26px 22px 22px;box-shadow:0 20px 40px #141a304d}.card h2{margin:0 0 6px;font-size:30px;font-weight:900}.overlay[data-kind=win] h2{color:#1d8b48}.overlay[data-kind=lose] h2{color:#c42b3b}.card p{color:var(--muted);margin:6px 0;font-weight:700}.card .analysis{color:#8a5a00;background:#fff6d6;border-radius:12px;padding:8px 10px;font-size:13px}.card .analysis:empty{display:none}.actions{justify-content:center;gap:12px;margin-top:16px;display:flex}.levels-card{flex-direction:column;max-height:80%;display:flex}.levels-head{justify-content:space-between;align-items:center;display:flex}.legend{color:var(--muted);justify-content:center;align-items:center;gap:6px;margin:6px 0 10px;font-size:12px;font-weight:700;display:flex}.dot{border-radius:50%;width:10px;height:10px;display:inline-block}.dot.band-tutorial,.level-cell.band-tutorial{--band:var(--tutorial)}.dot.band-medium,.level-cell.band-medium{--band:var(--medium)}.dot.band-hard,.level-cell.band-hard{--band:var(--hard)}.dot{background:var(--band)}.level-grid{grid-template-columns:repeat(6,1fr);gap:8px;padding:4px;display:grid;overflow-y:auto}.level-cell{aspect-ratio:1;border:2px solid var(--band);color:var(--ink);font:inherit;cursor:pointer;background:#fff;border-radius:12px;font-weight:900}.level-cell.done{background:var(--band);color:#fff}.level-cell.current{outline:3px solid #ffd24a}.side{max-width:320px;color:var(--ink)}.side h1{letter-spacing:1px;margin:0;font-size:34px;font-weight:900}.side .tag{color:var(--muted);margin:4px 0 18px;font-weight:700}.side ol{padding-left:20px;font-weight:600;line-height:1.7}.side .note{color:var(--muted);font-size:13px;line-height:1.6}.side .keys{color:var(--muted);font-size:13px}.admin-link{color:#fff;background:#262c40;border-radius:12px;margin-top:10px;padding:10px 16px;font-weight:800;text-decoration:none;display:inline-block}@media (width<=860px){.side{display:none}}