:root{--bg: #0b0e14;--panel: rgba(20, 26, 38, .72);--border: rgba(255, 255, 255, .1);--text: #e8edf7;--text-dim: #97a3ba;--red: #e0503f;--red-soft: rgba(224, 80, 63, .16);--black-soft: rgba(120, 150, 200, .16);--gold: #e8c07d;--shadow: 0 10px 34px rgba(0, 0, 0, .45);--radius: 14px;--font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased}#app{position:fixed;inset:0}#board-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}#ui-root{position:absolute;inset:0;pointer-events:none}#ui-root>*{pointer-events:auto}.topbar{display:flex;align-items:center;gap:12px;padding:12px 16px;flex-wrap:wrap}.turn-chip{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;font-size:15px;font-weight:600;background:var(--panel);border:1px solid var(--border);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow)}.turn-chip .dot{width:10px;height:10px;border-radius:50%;background:var(--red)}.turn-chip.red{color:#ffb3a7;border-color:#e0503f73}.turn-chip.black{color:#b9c8e4;border-color:#8ca5d266}.turn-chip.black .dot{background:#8fa8d4}.status-chip{padding:8px 14px;border-radius:999px;font-size:14px;font-weight:600;background:var(--panel);border:1px solid var(--border);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}.status-chip.check{color:#ffd0a0;border-color:#ff965080;background:#783c1480;animation:pulse 1.1s ease-in-out infinite}.status-chip.over{color:#fff3c4;border-color:#e8c07d99;background:#5a44148c}@keyframes pulse{0%,to{opacity:1}50%{opacity:.55}}.spacer{flex:1;pointer-events:none}.sidebar{position:absolute;top:68px;right:16px;width:232px;max-height:calc(100% - 96px);display:flex;flex-direction:column;gap:10px;overflow-y:auto;scrollbar-width:thin}.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow);overflow:hidden;flex:none}.panel-title{display:flex;align-items:center;justify-content:space-between;padding:9px 12px;font-size:12px;letter-spacing:1px;color:var(--text-dim);border-bottom:1px solid rgba(255,255,255,.07)}.panel-body{padding:8px 10px}.move-list{max-height:28vh;overflow-y:auto;font-size:13px;line-height:1.9;padding:6px 10px 10px;scrollbar-width:thin}.move-list::-webkit-scrollbar{width:6px}.move-list::-webkit-scrollbar-thumb{background:#ffffff29;border-radius:3px}.move-row{display:grid;grid-template-columns:26px 1fr 1fr;gap:4px;align-items:center}.move-row .no{color:var(--text-dim);font-size:11px}.move-row .red,.move-row .black{padding:1px 6px;border-radius:6px}.move-row .red{color:#ffb3a7}.move-row .black{color:#b9c8e4}.move-row .red.latest{background:var(--red-soft)}.move-row .black.latest{background:var(--black-soft)}.captured{display:flex;flex-wrap:wrap;gap:4px;min-height:30px;padding:4px 10px 8px}.captured .chip{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700;font-family:Songti SC,STSong,SimSun,serif;border:1px solid rgba(255,255,255,.14)}.captured .chip.red{color:#ffd9d1;background:linear-gradient(160deg,#c8483c,#8f2b22)}.captured .chip.black{color:#e6ecf7;background:linear-gradient(160deg,#3d4453,#232833)}.captured .empty{font-size:12px;color:var(--text-dim);align-self:center}.btn{appearance:none;border:1px solid var(--border);background:#ffffff0f;color:var(--text);font-family:var(--font);font-size:13px;padding:8px 12px;border-radius:10px;cursor:pointer;transition:all .18s ease;white-space:nowrap}.btn:hover:not(:disabled){background:#ffffff21;transform:translateY(-1px)}.btn:active:not(:disabled){transform:translateY(0)}.btn:disabled{opacity:.38;cursor:not-allowed}.btn.primary{background:linear-gradient(150deg,#d7533f,#a93325);border-color:#ffa08c59;font-weight:600}.btn.gold{background:linear-gradient(150deg,#e8c07d,#b98f4c);border-color:#ffe2aa66;color:#2a1c08;font-weight:600}.btn.ghost{background:#ffffff0a}.btn.small{padding:6px 10px;font-size:12px}.btn-row{display:flex;flex-wrap:wrap;gap:6px;padding:8px 10px 10px}.overlay{position:absolute;inset:0;display:grid;place-items:center;background:radial-gradient(ellipse at center,#0c1018b8,#04060af0);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);z-index:20;animation:fade .28s ease;overflow-y:auto}@keyframes fade{0%{opacity:0}to{opacity:1}}.menu{width:min(760px,92vw);margin:24px;padding:26px 28px 22px;border-radius:20px;background:linear-gradient(160deg,#1c2332f0,#0f131cf5);border:1px solid rgba(255,255,255,.12);box-shadow:0 28px 70px #0000009e}.menu h1{margin:0 0 4px;font-size:27px;letter-spacing:4px;font-weight:700;font-family:Songti SC,STSong,SimSun,serif;background:linear-gradient(100deg,#f3d9a8,#e8c07d 45%,#f0e3c6);-webkit-background-clip:text;background-clip:text;color:transparent}.menu .sub{margin:0 0 20px;font-size:13px;color:var(--text-dim)}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px}.card{padding:16px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:#ffffff0a;cursor:pointer;transition:all .2s ease;text-align:left;color:var(--text);font-family:var(--font)}.card:hover{background:#ffffff17;border-color:#e8c07d73;transform:translateY(-2px)}.card.active{border-color:var(--gold);background:#e8c07d1f}.card .title{font-size:16px;font-weight:700;margin-bottom:6px}.card .desc{font-size:12px;color:var(--text-dim);line-height:1.6}.section{margin-top:16px;padding-top:14px;border-top:1px solid rgba(255,255,255,.08)}.field{display:flex;align-items:center;gap:8px;margin:8px 0;flex-wrap:wrap}.field label{font-size:13px;color:var(--text-dim);min-width:62px}.seg{display:inline-flex;border:1px solid var(--border);border-radius:10px;overflow:hidden}.seg button{appearance:none;border:none;background:transparent;color:var(--text-dim);font-family:var(--font);font-size:13px;padding:7px 14px;cursor:pointer}.seg button.on{background:#e8c07d33;color:var(--gold);font-weight:600}input[type=text]{flex:1;min-width:120px;background:#00000057;border:1px solid var(--border);border-radius:10px;color:var(--text);font-family:var(--font);font-size:14px;padding:8px 12px;letter-spacing:2px;outline:none}input[type=text]:focus{border-color:#e8c07d99}.room-id{font-family:SF Mono,ui-monospace,Menlo,monospace;font-size:26px;letter-spacing:7px;font-weight:700;color:var(--gold)}.hint{font-size:12px;color:var(--text-dim);line-height:1.7}.hint.err{color:#ff9b8a}.hint.ok{color:#8fe0b0}.menu-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}.toast-wrap{position:absolute;left:50%;bottom:34px;transform:translate(-50%);display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}.toast{padding:10px 18px;border-radius:999px;background:#121823e6;border:1px solid var(--border);font-size:13px;box-shadow:var(--shadow);backdrop-filter:blur(10px);animation:toastIn .22s ease}@keyframes toastIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.result{position:absolute;inset:0;display:grid;place-items:center;z-index:25;background:#04060a8c;backdrop-filter:blur(3px)}.result-card{padding:28px 34px;border-radius:18px;text-align:center;background:linear-gradient(160deg,#1e2636f5,#10141ef7);border:1px solid rgba(232,192,125,.35);box-shadow:0 26px 60px #0009;animation:pop .3s cubic-bezier(.2,1.2,.4,1);max-width:88vw}@keyframes pop{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:none}}.result-card .big{font-size:30px;font-weight:700;font-family:Songti SC,STSong,SimSun,serif;letter-spacing:4px;margin-bottom:8px}.result-card .why{font-size:13px;color:var(--text-dim);margin-bottom:18px}.result-card .actions{display:flex;gap:10px;justify-content:center}.lobby-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:14px 0 8px;font-size:13px;font-weight:600;letter-spacing:1px;color:var(--gold);border-top:1px solid rgba(255,255,255,.08);padding-top:12px}.room-list,.rating-list{max-height:190px;overflow-y:auto;border:1px solid rgba(255,255,255,.08);border-radius:12px;background:#0000003d;padding:6px}.room-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 10px;border-radius:10px}.room-row:hover{background:#ffffff0d}.room-main{min-width:0;flex:1}.room-title{display:flex;align-items:center;gap:8px;font-size:14px}.room-id{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:2px;color:var(--gold)}.tag{font-size:11px;padding:2px 7px;border-radius:999px;border:1px solid transparent}.tag.playing{color:#7ee0a8;background:#7ee0a824;border-color:#7ee0a84d}.tag.waiting{color:var(--text-dim);background:#ffffff0f;border-color:#ffffff1f}.room-meta{margin-top:3px;font-size:12px;color:var(--text-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.room-ops{display:flex;gap:6px;flex-shrink:0}.rating-row{display:grid;grid-template-columns:34px 1fr 62px auto;align-items:center;gap:8px;padding:7px 10px;border-radius:8px;font-size:13px}.rating-row:hover{background:#ffffff0d}.rating-row .rank{color:var(--text-dim);font-variant-numeric:tabular-nums}.rating-row .rank.top{color:var(--gold);font-weight:700}.rating-row .name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.rating-row .score{text-align:right;font-variant-numeric:tabular-nums;color:var(--gold);font-weight:600}.rating-row .wl{font-size:11px;color:var(--text-dim);font-variant-numeric:tabular-nums}@media (max-width: 860px){.sidebar{inset:auto 12px 12px;width:auto;max-height:34vh;flex-direction:row;overflow-x:auto;overflow-y:hidden}.sidebar .panel{min-width:165px}.move-list{max-height:20vh}}