:root{--bg: #ffffff;--ink: #0b1220;--ink-soft: #2b3447;--muted: #5b6677;--line: #e6e9ef;--accent: #1a73e8;--accent-soft: #e8f0fe;--accent-line: #c9defb;--violet: #7c3aed;--violet-soft: #f1ebff;--violet-line: #e0d4fb;--green: #1e8e3e;--green-soft: #e6f4ea;--green-line: #bfe3c9;--amber: #b06000;--amber-soft: #fef3e0;--amber-line: #f3dcae;--red: #d93025;--red-soft: #fce8e6;--red-line: #f6cbc7;--ok: #1e8e3e;--warn: #b06000;--code-bg: #0e1320;--code-ink: #e8eaf0;--font: -apple-system, "SF Pro Display", "SF Pro Text", BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font);color:var(--ink);background:radial-gradient(circle at 12% 8%,rgba(26,115,232,.07),transparent 28%),radial-gradient(circle at 88% 86%,rgba(124,58,237,.06),transparent 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0}.footer{position:fixed;bottom:18px;left:0;right:0;display:flex;align-items:center;justify-content:space-between;padding:0 28px;z-index:40;pointer-events:none}.footer .brand{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.02em}.footer .brand b{color:var(--accent)}.footer .brand .turbo-mark{margin-left:0;height:14px}.footer .brand .turbo-mark i{width:3.5px}.footer .counter{font-size:13px;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums;margin-right:96px}.nav{position:fixed;bottom:14px;right:28px;display:flex;gap:8px;z-index:41}.nav button{pointer-events:auto;width:38px;height:38px;border-radius:50%;border:1.5px solid var(--line);background:#fff;cursor:pointer;font-size:17px;color:var(--ink-soft);display:grid;place-items:center;transition:all .15s ease}.nav button:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.hint{position:fixed;bottom:16px;left:50%;transform:translate(-50%);font-size:12px;color:var(--muted);z-index:40}.hint kbd{font-family:var(--mono);font-size:11px;border:1.5px solid var(--line);border-bottom-width:2.5px;border-radius:6px;padding:1px 6px;background:#fff;color:var(--ink-soft)}.notes-overlay{position:fixed;left:0;right:0;bottom:0;z-index:60;display:flex;justify-content:center;pointer-events:none}.notes-card{pointer-events:auto;width:min(1180px,93vw);max-height:42vh;overflow-y:auto;margin-bottom:64px;background:#0b1220f5;color:#e8eaf0;border-radius:14px;border:1px solid #2b3447;box-shadow:0 -20px 60px -30px #0009;padding:18px 22px}.notes-card .nh{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:8px}.notes-card .nh b{color:#7aa2f7;font-size:13px;letter-spacing:.08em;text-transform:uppercase}.notes-card .nh .nt{color:#9ece6a;font-family:var(--mono);font-size:13px;font-weight:700}.notes-card .nbody{font-size:15px;line-height:1.5;color:#cdd3e6}.notes-card .nbody b{color:#fff}.notes-card .nbody .land{color:#bb9af7;font-weight:700}.notes-toggle-hint{position:fixed;top:14px;right:20px;z-index:40;font-size:11px;color:var(--muted)}.notes-toggle-hint kbd{font-family:var(--mono);border:1.5px solid var(--line);border-bottom-width:2.5px;border-radius:6px;padding:1px 6px;background:#fff}@media (max-width: 760px){.grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}.stats-row{grid-template-columns:1fr 1fr}.flip-cols,.moves{grid-template-columns:1fr}.recall{grid-template-columns:repeat(4,1fr)}.proof-grid{grid-template-columns:1fr}.footer .brand{display:none}}