*{box-sizing:border-box;margin:0;padding:0}html,body{min-height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;overscroll-behavior:none;touch-action:manipulation}#app{min-height:100%;display:flex;align-items:center;justify-content:center;padding:14px}.game{width:min(92vw,440px);display:flex;flex-direction:column;gap:12px}.crumb{font-size:14px}.crumb a{color:var(--accent);text-decoration:none;font-weight:700}.crumb a:hover{text-decoration:underline}.topbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}.title{font-size:clamp(32px,10vw,52px);font-weight:800;line-height:1;letter-spacing:-1px}.scores,.stats{display:flex;gap:8px}.stats{justify-content:center;align-items:stretch}.score-box,.stat{background:var(--board-bg);color:var(--accent-text);border-radius:6px;padding:6px 14px;text-align:center;min-width:76px}.score-box .label,.stat .label{font-size:11px;text-transform:uppercase;letter-spacing:1px;opacity:.85;font-weight:700}.score-box .value,.stat .value{font-size:22px;font-weight:800;line-height:1.1}.seg{display:flex;gap:4px;margin-top:4px;justify-content:center}.seg-btn{background:#ffffff2e;color:var(--accent-text);border:none;border-radius:5px;padding:4px 9px;font-size:13px;font-weight:800;cursor:pointer;-webkit-tap-highlight-color:transparent}.seg-btn.on{background:var(--accent-text);color:var(--board-bg)}.board{position:relative;width:min(92vw,440px);aspect-ratio:1 / 1;touch-action:none}.board canvas{display:block;width:100%;height:100%;border-radius:10px}.pad{display:flex;flex-direction:column;align-items:center;gap:8px}.pad-row{display:flex;gap:8px}.pad-btn{width:68px;background:var(--board-bg);color:var(--accent-text);border:none;border-radius:8px;padding:12px 0;font-size:18px;font-weight:700;cursor:pointer;user-select:none;-webkit-tap-highlight-color:transparent;transition:filter .1s ease}.pad-btn:active{filter:brightness(.9)}.controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px}.how{font-size:12px;opacity:.85;flex:1;min-width:170px}.how b{font-weight:700}.buttons{display:flex;gap:8px}.btn{background:var(--accent);color:var(--accent-text);border:none;border-radius:6px;padding:10px 16px;font-size:14px;font-weight:700;cursor:pointer;white-space:nowrap;transition:filter .12s ease}.btn:hover{filter:brightness(1.05)}.btn:active{filter:brightness(.95)}.btn.ghost{background:var(--surface);color:var(--text);border:1px solid var(--line)}.btn.ghost.on{background:var(--board-bg);color:var(--accent-text);border-color:transparent}.overlay{position:absolute;inset:0;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;padding:20px;background:var(--overlay-bg);z-index:10;opacity:0;pointer-events:none;transition:opacity .2s ease}.overlay.show{opacity:1;pointer-events:auto}.overlay .msg{font-size:clamp(26px,8vw,40px);font-weight:800}.overlay.over .msg{color:#5aa85f}.overlay .sub{font-size:14px;color:var(--text);opacity:.85}.overlay .actions{display:flex;gap:10px;margin-top:8px}