:root{--bg-0: #fbf6ec;--bg-1: #f3ead6;--ink: #201a15;--muted: rgba(32, 26, 21, .68);--panel: rgba(255, 255, 255, .62);--panel-border: rgba(60, 42, 30, .18);--shadow: rgba(25, 18, 14, .12);--accent: #c43927;--radius: 16px;font-family:Iowan Old Style,Palatino Linotype,Palatino,Songti SC,serif;line-height:1.35;font-weight:520;color:var(--ink);background-color:var(--bg-0);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;display:grid;place-items:center;background:radial-gradient(900px 700px at 18% 12%,rgba(196,57,39,.08),transparent 60%),radial-gradient(900px 700px at 90% 60%,rgba(60,42,30,.09),transparent 55%),linear-gradient(180deg,var(--bg-0),var(--bg-1))}#app{width:100%;max-width:980px;padding:22px}.page{display:grid;gap:16px}.top{display:grid;grid-template-columns:1fr;gap:10px;padding:14px 14px 12px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--panel-border);box-shadow:0 14px 40px var(--shadow);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.brand{display:flex;align-items:baseline;justify-content:space-between;gap:12px}.clocks{font-variant-numeric:tabular-nums;letter-spacing:.2px;color:var(--muted);display:flex;align-items:baseline;gap:10px}.clock-time{color:var(--ink)}.clocks.active-black [data-player=black] .clock-time,.clocks.active-white [data-player=white] .clock-time{font-weight:700}.clock-sep{opacity:.6}.title{font-size:20px;letter-spacing:.4px}.subtitle{font-size:13px;color:var(--muted);letter-spacing:.6px;text-transform:uppercase}.controls{display:flex;align-items:center;justify-content:flex-start;gap:10px;flex-wrap:wrap}.seg{display:inline-flex;align-items:stretch;border-radius:999px;border:1px solid rgba(60,42,30,.24);background:#ffffffa6;overflow:hidden}.seg input{position:absolute;opacity:0;pointer-events:none}.seg label{padding:9px 12px;cursor:pointer;font-size:13px;letter-spacing:.2px;color:var(--ink);-webkit-user-select:none;user-select:none}.seg label:not(:first-of-type){border-left:1px solid rgba(60,42,30,.18)}.seg input:checked+label{background:#c439271f}.control{display:inline-flex;align-items:center;gap:8px}.control-label{font-size:12px;letter-spacing:.7px;text-transform:uppercase;color:var(--muted)}.control-input{appearance:none;border-radius:12px;border:1px solid rgba(60,42,30,.22);padding:8px 10px;background:#ffffffb3;color:var(--ink);font:inherit}.btn{border-radius:999px;border:1px solid rgba(60,42,30,.24);padding:9px 14px;background:#ffffffbf;color:var(--ink);font:inherit;cursor:pointer;transition:transform .12s ease,border-color .12s ease,background .12s ease}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{border-color:#c439278c;background:linear-gradient(180deg,#c43927f2,#aa2b1cf2);color:#fffffff2}.btn-primary:hover{border-color:#c43927b3;background:linear-gradient(180deg,#ce422ffa,#b23121fa)}.btn:hover{border-color:#c439278c;background:#ffffffe6}.btn:active{transform:translateY(1px)}@media(prefers-reduced-motion:reduce){.btn,.game-over{transition:none}}.status{font-size:16px}.notice{min-height:18px;font-size:13px;color:var(--muted)}.stage{display:grid;place-items:center;gap:12px}.board-wrap{width:min(92vw,72vh,740px);aspect-ratio:1 / 1;position:relative;border-radius:calc(var(--radius) + 4px);overflow:hidden;box-shadow:0 18px 55px #19120e2e;border:1px solid rgba(60,42,30,.22)}.board{display:block;width:100%;height:100%;touch-action:none}.game-over{position:absolute;inset:0;display:grid;place-items:center;padding:18px;background:#fbf6ecb8;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);opacity:0;pointer-events:none;transition:opacity .16s ease}.game-over.is-visible{opacity:1;pointer-events:auto}.game-over-card{width:min(420px,92%);padding:18px 18px 16px;border-radius:calc(var(--radius) + 2px);background:#ffffffbd;border:1px solid rgba(60,42,30,.18);box-shadow:0 14px 40px #19120e2e;text-align:center}.game-over-title{font-size:22px;letter-spacing:.3px;color:var(--ink)}.game-over-subtitle{margin-top:6px;font-size:13px;color:var(--muted);letter-spacing:.35px}.game-over-actions{margin-top:14px;display:flex;justify-content:center;gap:10px}.history{width:min(92vw,72vh,740px);padding:12px 12px 10px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--panel-border);box-shadow:0 14px 40px var(--shadow);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.history-header{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:8px}.history-title{font-size:12px;letter-spacing:.7px;text-transform:uppercase;color:var(--muted)}.history-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:6px 8px}.history-item{display:grid;grid-template-columns:30px 1fr auto;align-items:baseline;gap:10px;padding:6px 10px;border-radius:14px;background:#ffffffa6;border:1px solid rgba(60,42,30,.16)}.history-future{opacity:.55}.history-divider{height:1px;margin:4px 0;background:#3c2a1e2e}.history-empty{padding:6px 8px;font-size:12px;color:var(--muted)}.history-idx{color:var(--muted);font-variant-numeric:tabular-nums}.history-who{color:var(--muted)}.history-where{font-variant-numeric:tabular-nums;letter-spacing:.2px}@media(max-width:520px){#app{padding:14px}.brand{flex-direction:column;align-items:flex-start;gap:4px}.history{padding:10px 10px 8px}.history-list{grid-template-columns:1fr}}