*{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:16px}.game{width:min(92vw,460px);display:flex;flex-direction:column;gap:14px}.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:10px}.title{font-size:clamp(30px,8.5vw,44px);font-weight:800;line-height:1;letter-spacing:-1px}.stats{display:flex;gap:8px}.stat{background:var(--board-bg);color:var(--accent-text);border-radius:6px;padding:6px 12px;text-align:center;min-width:54px}.stat .label{font-size:10px;text-transform:uppercase;letter-spacing:1px;opacity:.85;font-weight:700}.stat .value{font-size:20px;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums}.status{font-size:16px;font-weight:700;text-align:center;min-height:22px}.board{position:relative}.grid{display:grid;grid-template-columns:repeat(15,1fr);gap:0;background:var(--board-bg);padding:6px;border-radius:10px;width:100%}.cell{aspect-ratio:1 / 1;position:relative;background:transparent;border:none;padding:0;cursor:pointer;display:flex;align-items:center;justify-content:center}.cell:before{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 .5px color-mix(in srgb,var(--cell-bg) 70%,transparent);pointer-events:none}.cell.taken{cursor:default}.cell:not(.taken):hover{background:color-mix(in srgb,var(--cell-bg) 45%,transparent)}.stone{width:82%;height:82%;border-radius:50%;transform:scale(0);transition:transform 90ms ease;position:relative;z-index:1}.stone.filled{transform:scale(1)}.stone.b{background:radial-gradient(circle at 34% 30%,#6a6a6a,#111 70%);box-shadow:0 1px 2px #00000080}.stone.w{background:radial-gradient(circle at 34% 30%,#fff,#cfcbc4 72%);box-shadow:0 1px 2px #0006}.stone.win{box-shadow:0 0 0 2px #f0c419,0 0 8px 2px #f0c419cc}.controls{display:flex;align-items:center;justify-content:space-between;gap:10px}.how{font-size:13px;opacity:.85;flex:1;line-height:1.4}.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:390px){.game{gap:12px}.grid{padding:4px}}