*{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;touch-action:manipulation}#app{min-height:100%;display:flex;align-items:center;justify-content:center;padding:16px}.game{width:min(92vw,calc(100dvh - 200px),460px);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;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.title{font-size:clamp(28px,8vw,44px);font-weight:800;line-height:1;letter-spacing:-1px}.level{background:var(--surface);color:var(--text);border:2px solid var(--line);border-radius:6px;padding:8px 10px;font-size:14px;font-weight:700;cursor:pointer}.stats{display:flex;gap:8px}.stat{flex:1;background:var(--board-bg);color:var(--accent-text);border-radius:6px;padding:6px 10px;text-align:center}.stat .label{font-size:10px;text-transform:uppercase;letter-spacing:1px;opacity:.85;font-weight:700}.stat .value{font-size:22px;font-weight:800;line-height:1.1}.status{font-size:16px;font-weight:700;text-align:center;min-height:22px}.board-wrap{position:relative;width:100%}.board{display:grid;grid-template-columns:repeat(8,1fr);width:100%;aspect-ratio:1 / 1;background:var(--board-bg);padding:2.4%;border-radius:12px;overflow:hidden}.sq{position:relative;aspect-ratio:1 / 1;display:flex;align-items:center;justify-content:center}.sq.light{background:#ebd6b0}.sq.dark{background:#a97b52}.sq.dark:hover,.sq.light:hover{filter:brightness(1.05)}.piece{font-size:clamp(20px,8vw,42px);line-height:1;cursor:pointer;user-select:none;-webkit-user-select:none;transition:transform 80ms ease}.piece.filled.white{color:#fbfbf7;text-shadow:0 0 1px #2b2b2b,0 1px 2px rgba(0,0,0,.45)}.piece.filled.black{color:#262322;text-shadow:0 1px 2px rgba(255,255,255,.25)}.piece.filled:active{transform:scale(.92)}.sq.sel{box-shadow:inset 0 0 0 4px #f4c650}.sq.target:before{content:"";position:absolute;width:30%;height:30%;border-radius:50%;background:#3c281459;pointer-events:none}.sq.capture:after{content:"";position:absolute;inset:6%;border:4px solid rgba(210,60,40,.7);border-radius:50%;pointer-events:none}.sq.check{box-shadow:inset 0 0 0 4px #e0453a}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:var(--overlay-bg);border-radius:12px;z-index:10}.overlay[hidden]{display:none}.overlay-card{text-align:center;display:flex;flex-direction:column;gap:14px;align-items:center}.overlay-msg{font-size:clamp(20px,6vw,30px);font-weight:800;color:var(--text)}.promo-row{display:flex;gap:8px}.promo-btn{width:clamp(48px,14vw,64px);height:clamp(48px,14vw,64px);font-size:clamp(28px,9vw,40px);line-height:1;background:var(--surface);color:var(--text);border:2px solid var(--line);border-radius:8px;cursor:pointer;transition:filter .12s ease,transform 80ms ease}.promo-btn:hover{filter:brightness(1.05)}.promo-btn:active{transform:scale(.94)}.controls{display:flex;align-items:center;justify-content:space-between;gap:10px}.how{font-size:13px;opacity:.85;flex:1}.how b{font-weight:700}.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)}@media(max-width:375px){.how{font-size:12px}}