.board{aspect-ratio:1;touch-action:manipulation;background:#fff;border:1px solid #cdd6e0;border-radius:14px;width:100%;box-shadow:0 6px 24px #1b24301a}.edge{stroke:#b7c2cf;stroke-width:.6px;stroke-linecap:round}.edge--conflict{stroke:#e4572e;stroke-width:1.4px}.node{stroke:#8b97a5;stroke-width:.6px;cursor:pointer;transition:fill .12s}.node--clue{stroke:#1b2430;stroke-width:1.3px}.node--locked{cursor:default}.node__lock{fill:none;stroke:#1b24308c;stroke-width:.5px}.node--conflict{stroke:#e4572e;stroke-width:1.4px;animation:1s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.55}}.palette{justify-content:center;gap:10px;display:flex}.swatch{cursor:pointer;border:2px solid #1b243026;border-radius:14px;justify-content:center;align-items:center;width:52px;height:52px;font-size:1.2rem;display:flex;position:relative}.swatch--active{border-color:#1b2430;transform:translateY(-2px);box-shadow:0 0 0 3px #1b24302e}.swatch--erase{color:#6b7785;background:#fff}.swatch__key{color:#fff;text-shadow:0 0 2px #000000d9,0 0 1px #000000d9;font-size:.62rem;font-weight:700;position:absolute;bottom:2px;right:5px}:root{--bg:#f4f6f9;--surface:#fff;--ink:#1b2430;--muted:#6b7785;--line:#cdd6e0;--accent:#3a7ca5;--warn:#e4572e;--easy:#4caf50;--medium:#f3c623;--hard:#e4572e;--radius:14px;--shadow:0 6px 24px #1b24301a}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);-webkit-tap-highlight-color:transparent;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.app{flex-direction:column;gap:14px;max-width:520px;margin:0 auto;padding:16px 16px 40px;display:flex}.app-header{text-align:center}.app-header h1{letter-spacing:-.02em;margin:8px 0 2px;font-size:1.8rem}.tagline{color:var(--muted);margin:0;font-size:.92rem}.tabs{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:999px;padding:4px;display:flex}.tab{color:var(--muted);cursor:pointer;background:0 0;border:none;border-radius:999px;flex:1;padding:9px 0;font-size:.95rem;font-weight:600}.tab.is-active{background:var(--accent);color:#fff}.levels{gap:8px;display:flex}.level{border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;border-radius:10px;flex:1;padding:9px 0;font-weight:600}.level.is-active{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);color:var(--accent)}.date-note{text-align:center;color:var(--muted);margin:-4px 0 0;font-size:.82rem}.game{flex-direction:column;gap:12px;display:flex;position:relative}.statusbar{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.chip{background:var(--accent);color:#fff;border-radius:999px;padding:3px 10px;font-size:.78rem;font-weight:700}.chip--muted{color:var(--muted);background:#e4e9ef}.status-spacer{flex:1}.status-stat{color:var(--muted);font-variant-numeric:tabular-nums;font-size:.85rem}.status-stat--warn{color:var(--warn);font-weight:700}.lives{gap:1px;font-size:.95rem;line-height:1;display:inline-flex}.heart{color:var(--hard)}.heart--lost{color:var(--line)}.controls{gap:8px;display:flex}.btn{border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;border-radius:10px;flex:1;padding:11px 8px;font-size:.9rem;font-weight:600}.btn:disabled{opacity:.45;cursor:default}.btn--primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn--ghost{background:0 0}.overlay{z-index:10;background:#1b243073;justify-content:center;align-items:center;padding:20px;animation:.2s fade;display:flex;position:fixed;inset:0}@keyframes fade{0%{opacity:0}}.win-card{background:var(--surface);text-align:center;width:100%;max-width:360px;box-shadow:var(--shadow);border-radius:18px;padding:28px 24px}.win-card--fail{border-top:4px solid var(--hard)}.fail-message{color:var(--hard);margin:2px 0 6px;font-size:1.15rem;font-weight:700}.fail-sub{color:var(--muted);margin:0 0 12px;font-size:.9rem}.win-burst{font-size:3rem}.win-card h2{margin:6px 0 2px}.win-stats{color:var(--muted);font-variant-numeric:tabular-nums;justify-content:center;gap:8px;margin:0 0 18px;display:flex}.win-actions{flex-direction:column;gap:8px;display:flex}.app-footer{text-align:center;color:var(--muted);font-size:.78rem}.app-footer p{margin:6px 0}.support-link{color:var(--accent);font-weight:600;text-decoration:none}.support-link:hover{text-decoration:underline}kbd{background:#e4e9ef;border-radius:4px;padding:1px 5px;font-family:ui-monospace,monospace;font-size:.74rem}.header-bar{justify-content:space-between;align-items:center;gap:8px;display:flex}.header-actions{align-items:center;gap:8px;display:flex}.streak-chip{color:var(--hard);font-variant-numeric:tabular-nums;background:#fff1e9;border:1px solid #f6d2c1;border-radius:999px;padding:4px 10px;font-size:.85rem;font-weight:800}.icon-btn{border:1px solid var(--line);background:var(--surface);cursor:pointer;border-radius:10px;width:38px;height:38px;font-size:1.05rem;line-height:1}.win-score{letter-spacing:-.01em;margin:2px 0 6px;font-size:2.1rem;font-weight:800}.win-stats{margin:0 0 12px}.win-meta{flex-direction:column;align-items:center;gap:4px;margin-bottom:18px;display:flex}.win-streak{color:var(--hard);font-weight:700}.win-countdown{color:var(--muted);font-variant-numeric:tabular-nums;font-size:.82rem}.stats-card{background:var(--surface);width:100%;max-width:380px;box-shadow:var(--shadow);border-radius:18px;padding:22px}.stats-head{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.stats-head h2{margin:0}.stat-grid{gap:8px;margin-bottom:16px;display:flex}.stat{background:var(--bg);text-align:center;border-radius:12px;flex:1;padding:12px 6px}.stat-value{font-variant-numeric:tabular-nums;font-size:1.5rem;font-weight:800;display:block}.stat-label{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:.74rem;display:block}.stats-sub{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin:16px 0 8px;font-size:.82rem}.stats-empty{color:var(--muted);margin:0;font-size:.9rem}.month-averages{flex-direction:column;gap:10px;display:flex}.avg-overall{align-items:baseline;gap:8px;display:flex}.avg-overall .avg-value{font-size:1.7rem;font-weight:800}.avg-levels{gap:8px;display:flex}.avg-level{text-align:center;border:1px solid var(--line);border-top:3px solid var(--line);border-radius:10px;flex:1;padding:8px 4px}.avg-level--easy{border-top-color:var(--easy)}.avg-level--medium{border-top-color:var(--medium)}.avg-level--hard{border-top-color:var(--hard)}.avg-value{font-variant-numeric:tabular-nums;font-weight:700}.avg-label{color:var(--muted);font-size:.72rem;display:block}.calendar{grid-template-columns:repeat(7,1fr);gap:4px;display:grid}.cal-cell{aspect-ratio:1;background:var(--bg);color:var(--muted);font-variant-numeric:tabular-nums;border-radius:7px;justify-content:center;align-items:center;font-size:.7rem;display:flex}.cal-cell--solved{color:#fff;font-weight:700}.cal-cell--easy{background:var(--easy)}.cal-cell--medium{background:var(--medium);color:var(--ink)}.cal-cell--hard{background:var(--hard)}.cal-cell--failed{color:var(--hard);background:#fdece7;font-weight:700}.cal-cell--today{outline:2px solid var(--ink);outline-offset:1px}