:root{--bg: #f6f1e7;--surface: #fffdf8;--text: #24302a;--muted: #68756d;--accent: #1f7a5c;--accent-text: #ffffff;--border: #ddd5c4;--error: #b3352b;--mistake: #b85c00;--inaccuracy: #8a6d00;--bubble: #e4f2ea;--square-dark: #6f9c86;--square-light: #f0e9d6;--square-last: rgba(235, 190, 70, .55);--square-selected: rgba(31, 122, 92, .55);--square-target: rgba(20, 60, 45, .45);color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}@media (prefers-color-scheme: dark){:root{--bg: #17201c;--surface: #212c27;--text: #edf1ec;--muted: #a3b0a8;--accent: #45b78f;--accent-text: #0f1a15;--border: #38463f;--error: #ff8f84;--mistake: #ffb066;--inaccuracy: #e6cc5c;--bubble: #2d4238;--square-dark: #5b8571;--square-light: #d9d2bf}}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);overscroll-behavior:none}h1,h2,p{margin:0}h2{font-size:1.15rem}a{color:inherit}button,.button,input{font:inherit}button,.button{min-height:44px;padding:8px 16px;border:1px solid var(--border);border-radius:12px;background:var(--surface);color:var(--text);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}button:disabled{opacity:.6;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-weight:600}.danger{border-color:var(--error);color:var(--error);font-weight:600}.link{border:0;background:none;color:var(--muted);text-decoration:underline;padding:8px}.muted{color:var(--muted);font-size:.92rem}.error{color:var(--error);font-size:.92rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:20px}.stack{display:flex;flex-direction:column;gap:14px}label{display:flex;flex-direction:column;gap:6px;font-size:.95rem}input:not([type=range]){min-height:44px;padding:8px 12px;border-radius:10px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:16px}input[type=range]{accent-color:var(--accent);width:100%;height:32px}.auth{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:24px 16px;text-align:center}.auth form{width:min(100%,380px);margin-top:16px;text-align:left}.logo{font-size:3.4rem;line-height:1;color:var(--accent)}.topbar{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:4px 16px;height:52px}.brand{font-weight:700;text-decoration:none}.brand span{color:var(--accent);font-size:1.3rem}.user{display:flex;align-items:center;gap:4px;min-width:0}.home{max-width:560px;margin:0 auto;padding:8px 16px 32px;display:flex;flex-direction:column;gap:16px}.segmented{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.segmented .selected{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);font-weight:600}.row{justify-content:space-between;gap:12px;width:100%;text-align:left}.game-loading{padding:32px 16px;text-align:center}.game{display:grid;gap:16px;padding:0 16px 16px;justify-content:center;grid-template-columns:minmax(0,min(100%,calc(100dvh - 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