:root{--gold:#f5c542;--panel-bg:#101218b8;--panel-border:#f5c5422e;--text:#e8e6e1;--text-dim:#9a9790;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-family:Inter,Segoe UI,system-ui,sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--text);background:#0a0b0e;overflow:hidden}#app,#scene-container{position:fixed;inset:0}#scene-container canvas{display:block}#topbar{z-index:10;background:var(--panel-bg);border:1px solid var(--panel-border);-webkit-backdrop-filter:blur(12px);pointer-events:none;border-radius:14px;justify-content:space-between;align-items:center;gap:12px;padding:10px 16px;display:flex;position:fixed;top:14px;left:14px;right:14px}#topbar h1{letter-spacing:.4px;color:var(--gold);font-size:17px;font-weight:700}#topbar .controls{align-items:center;gap:8px;display:flex}#topbar button,#topbar select,#game-over button{pointer-events:auto;font:inherit;color:var(--text);cursor:pointer;background:#ffffff12;border:1px solid #ffffff24;border-radius:9px;padding:7px 12px;font-size:13px;transition:background .15s,border-color .15s}#topbar button:hover,#topbar select:hover,#game-over button:hover{border-color:var(--gold);background:#f5c54229}#topbar button:disabled{opacity:.4;cursor:default;background:#ffffff0d;border-color:#ffffff1a}#topbar select{appearance:none;background-image:linear-gradient(45deg, transparent 50%, var(--text) 50%), linear-gradient(135deg, var(--text) 50%, transparent 50%);background-position:calc(100% - 14px) 55%,calc(100% - 10px) 55%;background-repeat:no-repeat;background-size:4px 4px;padding-right:24px}#topbar select option{background:#14161c}#panel{z-index:10;background:var(--panel-bg);border:1px solid var(--panel-border);-webkit-backdrop-filter:blur(12px);border-radius:14px;flex-direction:column;gap:10px;width:216px;max-height:calc(100vh - 96px);padding:14px;display:flex;position:fixed;top:76px;right:14px}#status{text-align:center;background:#ffffff0f;border-radius:9px;padding:8px;font-size:14px;font-weight:600}#status.alert{color:#ffb3b3;background:#e052522e}.captured{letter-spacing:1px;border-bottom:1px solid #ffffff12;min-height:24px;padding:2px 4px;font-family:Segoe UI Symbol,"Noto Sans Symbols 2",serif;font-size:20px;line-height:1.2}.cap.light{color:#e8e0cf}.cap.dark{color:#5a5f6e}#history{flex:1;min-height:80px;padding-right:4px;font-size:13px;overflow-y:auto}#history::-webkit-scrollbar{width:6px}#history::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:3px}.mv{border-radius:6px;grid-template-columns:30px 1fr 1fr;padding:3px 4px;display:grid}.mv:nth-child(odd){background:#ffffff0a}.mv-num{color:#9a9790}#board2d{z-index:5;background:#0a0b0e;justify-content:center;align-items:center;display:flex;position:fixed;inset:76px 0 0}.board2d-grid{aspect-ratio:1;border:8px solid #2e2013;border-radius:8px;grid-template-rows:repeat(8,1fr);grid-template-columns:repeat(8,1fr);width:min(72vh,56vw);font-size:min(7.6vh,5.9vw);display:grid;overflow:hidden;box-shadow:0 24px 70px #0009}.sq{cursor:pointer;-webkit-user-select:none;user-select:none;justify-content:center;align-items:center;font-family:Segoe UI Symbol,"Noto Sans Symbols 2",serif;line-height:1;display:flex;position:relative}.sq.light{background:#f0d9b5}.sq.dark{background:#b58863}.sq.white-piece{color:#fafaf5;text-shadow:0 0 3px #000,0 2px 4px #0000008c}.sq.black-piece{color:#191919;text-shadow:0 0 3px #ffffff40,0 2px 4px #00000080}.sq.last{box-shadow:inset 0 0 0 100vmax #f5c54247}.sq.sel{box-shadow:inset 0 0 0 4px var(--gold), inset 0 0 0 100vmax #f5c54238}.sq.check{box-shadow:inset 0 0 0 100vmax #e0525273}.sq.legal:after{content:"";background:#141e144d;border-radius:50%;width:26%;height:26%;position:absolute}.sq.capture:after{content:"";border:min(.7vh,.55vw) solid #e05252d9;border-radius:50%;position:absolute;inset:5%}#game-over{-webkit-backdrop-filter:blur(3px);z-index:20;background:#06070a8c;flex-direction:column;justify-content:center;align-items:center;gap:18px;display:flex;position:fixed;inset:0}#game-over-text{color:var(--gold);text-shadow:0 2px 24px #000000b3;font-size:34px;font-weight:800}#game-over button{padding:10px 22px;font-size:15px}.game-over-actions{gap:12px;display:flex}.promo-backdrop{z-index:30;background:#06070a80;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.promo-dialog{background:var(--panel-bg);border:1px solid var(--panel-border);-webkit-backdrop-filter:blur(14px);text-align:center;border-radius:16px;padding:18px 20px}.promo-title{color:var(--text);margin-bottom:12px;font-size:14px;font-weight:600}.promo-row{gap:10px;display:flex}.promo-btn{cursor:pointer;background:#ffffff12;border:1px solid #ffffff24;border-radius:12px;width:58px;height:58px;font-family:Segoe UI Symbol,"Noto Sans Symbols 2",serif;font-size:38px;line-height:1;transition:background .15s,border-color .15s,transform .1s}.promo-btn:hover{border-color:var(--gold);background:#f5c54233;transform:translateY(-2px)}.promo-btn.white{color:#f1e8d6}.promo-btn.black{color:#2a2d38;background:#ffffff8c}.hidden{display:none!important}