:root{--bg: #1a140c;--panel: #261d12;--line: #3a2d1b;--ink: #f6efe4;--dim: #b69a78;--accent: #c0843a;--good: #2f5d3a;--bad: #5a2422;--tile: #2e2415}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(900px 560px at 50% -8%,#2a2012,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:520px;padding:12px 12px 26px}header{text-align:center;margin-bottom:6px}h1{margin:0;font-size:26px;letter-spacing:5px;font-weight:800;color:var(--accent)}.sub{margin:3px 0 0;color:var(--dim);font-size:13px}.bar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;margin:10px 0}.seg{display:inline-flex;background:var(--panel);border:1px solid var(--line);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:#221504}.stat{color:var(--dim);font-size:13px}.stat b{color:var(--ink)}.btn{background:var(--panel);border:1px solid var(--line);color:var(--ink);padding:8px 16px;border-radius:999px;font:700 14px system-ui;cursor:pointer}.btn:hover{border-color:var(--accent)}.btn.big{padding:11px 22px;font-size:15px;background:var(--accent);color:#221504;border-color:var(--accent)}.progress{display:flex;gap:10px;justify-content:center;margin:10px 0 6px}.pip{font-size:22px;opacity:.35;filter:grayscale(1)}.pip.cur{opacity:1;filter:none;transform:scale(1.15)}.pip.done{opacity:.85;filter:none}.rtitle{text-align:center;margin:8px 0 4px;font-size:19px;color:var(--ink)}.hint{text-align:center;color:var(--dim);font-size:13px;margin:4px 0 10px}.hint b{color:var(--ink)}.dim{color:var(--dim)}.center{text-align:center}.lesson{max-width:280px;margin:0 auto;padding-left:22px}.lesson li{padding:6px 0;font-size:16px}.lesson .em{margin-right:6px}.actions{text-align:center;margin:16px 0}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:8px 0}.tile{display:flex;flex-direction:column;align-items:center;gap:4px;background:var(--tile);border:1px solid var(--line);color:var(--ink);border-radius:14px;padding:14px 8px;cursor:pointer;font:600 14px system-ui;transition:transform .08s,background .15s}.tile:hover{border-color:var(--accent)}.tile:active{transform:scale(.96)}.tile .em{font-size:30px}.tile.intr{border-style:dashed;border-color:#7a4a3a}.tile.cleared{opacity:.35;background:var(--good);cursor:default}.tile.good{background:var(--good);border-color:#4caf72}.tile.bad{background:var(--bad);border-color:#c0564f;animation:shake .25s}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.done{text-align:center;padding:18px 0}.big-emoji{font-size:56px;margin:0}.score{font-size:18px}.score b{color:var(--accent);font-size:24px}