:root{color-scheme:light;--bg:#eee8dd;--panel:#fffdf6;--board:#fffdf3;--grid:#8496ad;--cyan:#2156a4;--gold:#b9363b;--text:#303d50;--muted:#667287;--line:rgba(102,114,135,.24)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.6 "Microsoft YaHei","PingFang SC",system-ui,sans-serif;min-width:280px}button,input,select{font:inherit}button,a,select,input,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{opacity:.35;cursor:not-allowed}button:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}button{transition:background .2s,border-color .2s,transform .2s}button:active:not(:disabled){transform:translateY(1px)}[hidden]{display:none!important}#space{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:-2}.ambient{position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(ellipse at 14% 30%,rgba(23,101,143,.12),transparent 48%),radial-gradient(ellipse at 88% 58%,rgba(120,72,29,.08),transparent 42%)}.shell{max-width:1320px;margin:auto;padding:0 44px}.topbar{height:102px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{display:flex;align-items:center;gap:13px;text-decoration:none;color:var(--text);font:700 21px/1.2 Consolas,monospace;letter-spacing:3.5px}.brand small{display:block;font:10px/1.4 "Microsoft YaHei",sans-serif;color:var(--muted);letter-spacing:4px;margin-top:8px}.brand-mark{font:46px/1 Georgia;color:var(--cyan);text-shadow:0 0 24px #54e5ff60}.header-meta{font:11px Consolas,monospace;letter-spacing:1px;color:var(--muted);display:flex;align-items:center;gap:10px}.live-dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--cyan);box-shadow:0 0 9px var(--cyan);margin-right:6px}.divider{color:#39536a;margin:0 10px}.sound-btn{background:#10213680;border:1px solid var(--line);padding:10px 14px;display:flex;gap:9px;align-items:center;font-size:12px;border-radius:5px}.sound-btn:hover{border-color:#54e5ff65}.sound-btn.enabled{color:var(--cyan)}#sound-icon{font-size:20px;line-height:1}.intro{padding:32px 0 27px;display:flex;align-items:center;justify-content:space-between;gap:20px}.eyebrow{font:10px/1.5 Consolas,monospace;color:var(--muted);letter-spacing:2px}.intro .eyebrow span{color:var(--cyan);border-left:1px solid #35526a;padding-left:12px;margin-left:10px}h1{font-size:34px;letter-spacing:3px;line-height:1.3;font-weight:600;margin:10px 0}h1>span{color:var(--cyan)}.intro p{margin:8px 0 0;color:var(--muted);font-size:12px;letter-spacing:.7px}.arena-number{font-size:11px;line-height:2;letter-spacing:3px;color:var(--muted);text-align:right}.arena-number b{font-weight:400;color:var(--text)}.arena-layout{display:grid;grid-template-columns:minmax(0,1fr) 324px;gap:32px;align-items:start}.battle-section{min-width:0}.field-top,.field-bottom{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:10px;letter-spacing:1px;gap:12px}.field-top{height:30px;margin-bottom:9px}.field-top>span:first-child{color:#a1b9cd}#coord{font-family:Consolas,monospace}.board-frame{position:relative;aspect-ratio:1;background:radial-gradient(ellipse at 40% 40%,#12253b95,#071320cc 75%);border:1px solid #29465d;box-shadow:0 0 80px #1c91c914,inset 0 0 80px #04091060;isolation:isolate}.board-frame:after{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(0deg,transparent,transparent 3px,#07101b24 4px);opacity:.32;z-index:1}#board{display:block;width:100%;height:100%;touch-action:manipulation;cursor:crosshair;outline:none;position:relative;z-index:2}#board:focus-visible{box-shadow:inset 0 0 0 2px #54e5ff80}.corner{position:absolute;width:19px;height:19px;z-index:4;pointer-events:none;border-color:var(--cyan);border-style:solid}.tl{left:-1px;top:-1px;border-width:2px 0 0 2px}.tr{right:-1px;top:-1px;border-width:2px 2px 0 0}.bl{left:-1px;bottom:-1px;border-width:0 0 2px 2px}.br{right:-1px;bottom:-1px;border-width:0 2px 2px 0}.board-watermark{position:absolute;bottom:9px;left:0;width:100%;text-align:center;pointer-events:none;font:8px Consolas,monospace;letter-spacing:3px;color:#4b6985;z-index:3}.field-bottom{padding-top:16px;font-size:10px}.key{display:inline-block;border:1px solid #35536c;border-radius:3px;padding:0 4px;margin-right:4px;color:#a0c4df}.command-panel{margin-top:39px;min-width:0}.panel-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:17px}.tiny-cross{color:#5c829c;font-size:17px}.mode-tabs{display:flex;background:#0d1a2b;border:1px solid var(--line);padding:4px;border-radius:5px;gap:4px}.mode-tabs button{flex:1;background:none;border:1px solid transparent;border-radius:3px;padding:9px 8px;font-size:12px;color:var(--muted)}.mode-tabs button.selected{color:var(--cyan);background:#153249;border-color:#315e75}.mode-tabs button>span{margin-left:6px}.players{margin-top:23px}.player{display:flex;align-items:center;gap:14px;padding:16px 12px;border:1px solid var(--line);background:#0d1a2a8a;border-radius:5px;position:relative;transition:border-color .3s,background .3s}.player.active{border-color:#54e5ff65;background:linear-gradient(100deg,#112e43bb,#0c172780)}.gold-player.active{border-color:#ffb85c75;background:linear-gradient(100deg,#382b22aa,#0c172780)}.mini-core{flex-shrink:0;width:34px;height:34px;border:1px solid currentColor;color:var(--cyan);border-radius:50%;position:relative;box-shadow:0 0 17px #54e5ff1f,inset 0 0 13px #54e5ff30}.mini-core:before{content:"";position:absolute;inset:8px;border-radius:50%;background:currentColor;box-shadow:0 0 10px currentColor}.mini-core:after{content:"";position:absolute;inset:-4px;border:1px dashed currentColor;border-radius:50%;opacity:.3}.mini-core.gold{color:var(--gold);box-shadow:0 0 17px #ffb85c1f,inset 0 0 13px #ffb85c30}.mini-core.gold:before{border-radius:2px;transform:rotate(45deg);inset:9px}.player-info{flex:1;min-width:0}.player-label{font-size:14px;font-weight:500;display:block}.player-label small{font-size:9px;letter-spacing:1px;color:var(--muted);margin-left:5px;font-weight:400}.player-status{display:block;font-size:10px;color:var(--muted);margin-top:3px}.turn-tag{font-size:9px;color:var(--cyan);white-space:nowrap}.gold-player .turn-tag{color:var(--gold)}.versus{display:flex;align-items:center;gap:10px;justify-content:center;font:9px/1 Consolas,monospace;color:#617b94;padding:10px 0;letter-spacing:2px}.versus span{height:1px;width:23px;background:var(--line)}.turn-message{color:var(--cyan);font-size:11px;min-height:40px;padding:15px 0 6px;letter-spacing:.3px}.stats{display:grid;grid-template-columns:1fr 1fr 1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:17px 0;margin:4px 0 18px}.stats>div{padding-left:14px;border-left:1px solid var(--line)}.stats>div:first-child{padding-left:0;border:0}.stats span{font-size:9px;color:var(--muted);display:block}.stats strong{display:block;font:21px/1.5 Consolas,monospace;color:var(--text);font-weight:400;letter-spacing:1px;margin-top:3px}.actions{display:flex;gap:9px}.primary,.secondary{border-radius:4px;padding:12px 15px;font-size:12px;display:flex;align-items:center;justify-content:center;gap:18px;min-height:43px}.primary{background:#54e5ff;color:#081321;border:1px solid #54e5ff;flex:1;font-weight:600}.primary:hover{background:#9cf1ff;box-shadow:0 0 20px #54e5ff25}.secondary{border:1px solid #35516a;background:#0c1829;color:#b3c9dc}.secondary:hover:not(:disabled){border-color:#7599b1;background:#192c40}.secondary>span{font-size:16px;line-height:1}.settings{border-bottom:1px solid var(--line);margin-top:14px}.settings summary{list-style:none;cursor:pointer;font-size:11px;color:var(--muted);padding:13px 0;display:flex;justify-content:space-between}.settings summary::-webkit-details-marker{display:none}.settings[open] summary>span{transform:rotate(45deg)}.settings-body{padding-bottom:13px}.setting-row{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:#a8bfd4;gap:10px;margin:10px 0}select{background:#112236;color:var(--text);border:1px solid #2d455b;padding:5px 8px;border-radius:4px;max-width:125px}input[type=range]{width:125px;accent-color:var(--cyan)}input[type=checkbox]{accent-color:var(--cyan);width:16px;height:16px}.log-heading{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin-top:20px}.log-heading>span:last-child{font:8px Consolas,monospace;letter-spacing:1px;color:#56718d}.history{list-style:none;padding:0;margin:10px 0 0;min-height:38px;max-height:132px;overflow:auto;scrollbar-width:thin;scrollbar-color:#305169 transparent}.history li{display:flex;gap:12px;align-items:center;padding:6px 0;font:11px Consolas,"Microsoft YaHei",monospace;color:#b2c5d9;border-bottom:1px solid #20304755}.history .empty-log{color:#56718d;font-size:10px;border:0;font-family:inherit}.history .log-number{width:22px;color:#56718d}.history .log-core{width:5px;height:5px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px #54e5ff50}.history .log-core.gold{background:var(--gold)}.history .log-location{margin-left:auto;color:#7f9aaf}.rules-note{font-size:10px;line-height:1.9;color:#617d95;margin:16px 0 0}footer{display:flex;justify-content:space-between;gap:12px;margin-top:37px;padding:21px 0 27px;color:#526d86;font-size:9px;letter-spacing:1px;border-top:1px solid var(--line)}.footer-separator{margin:0 10px;color:#34516c}.result{position:absolute;inset:0;z-index:6;display:flex;align-items:center;justify-content:center;background:#030b1450;backdrop-filter:blur(4px)}.result-card{text-align:center;background:linear-gradient(140deg,#152b3eed,#091524f5);border:1px solid #54e5ff80;padding:34px 40px;box-shadow:0 0 80px #54e5ff25;max-width:90%;border-radius:5px}.result-card h2{font-size:30px;font-weight:500;letter-spacing:4px;color:var(--cyan);margin:12px 0 4px}.result-card p{color:var(--muted);font-size:12px;margin:0 0 22px}.result-card .primary{width:100%;min-width:180px}.text-btn{border:none;background:none;color:var(--muted);font-size:11px;padding:12px 8px 0}.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);background:#112b40f2;border:1px solid #547c96;padding:10px 20px;z-index:20;font-size:12px;max-width:90vw;box-shadow:0 6px 40px #0007;border-radius:5px;text-align:center}.board-frame.impact{animation:impact .16s linear}@keyframes impact{0%{transform:translate(0,0)}25%{transform:translate(-2px,1px)}50%{transform:translate(2px,-2px)}75%{transform:translate(-1px,0)}100%{transform:translate(0,0)}}
@media(min-width:1500px){.shell{max-width:1400px}.arena-layout{grid-template-columns:minmax(0,1fr) 350px;gap:44px}}
@media(max-width:1000px){.shell{padding:0 26px}.arena-layout{grid-template-columns:minmax(0,1fr) 285px;gap:22px}.topbar{height:86px}.intro{padding-top:26px}h1{font-size:29px}.player{padding:14px 9px;gap:10px}.turn-tag{font-size:8px}.header-meta{display:none}}
@media(max-width:760px){.shell{padding:0 18px}.topbar{height:77px;gap:12px}.brand{font-size:17px;gap:8px;letter-spacing:2px}.brand-mark{font-size:37px}.brand small{font-size:9px;letter-spacing:3px;margin-top:6px}.sound-btn{font-size:10px;padding:8px 10px}.intro{padding:24px 0 17px}.intro .eyebrow{font-size:8px;letter-spacing:1.4px}h1{font-size:27px;margin:8px 0}.intro p{font-size:10px;letter-spacing:0}.arena-number{display:none}.arena-layout{display:flex;flex-direction:column;gap:25px}.battle-section{width:100%}.field-top{font-size:9px;height:21px;margin-bottom:8px}.field-bottom{padding-top:11px;font-size:9px;letter-spacing:0}.command-panel{margin-top:0;width:100%;padding:18px;border:1px solid var(--line);background:#0a14238c;border-radius:5px}.panel-heading{margin-bottom:11px}.players{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}.versus{display:none}.player{padding:13px 10px;gap:9px;align-items:center}.mini-core{width:26px;height:26px}.mini-core:before{inset:6px}.mini-core.gold:before{inset:7px}.player-label{font-size:12px}.player-label small{display:none}.turn-tag{position:absolute;right:7px;bottom:6px;font-size:7px}.player-status{font-size:9px;margin-top:4px}.turn-message{padding:13px 0 8px;min-height:36px}.stats{padding:12px 0;margin-bottom:14px}.stats strong{font-size:20px}.stats span{font-size:10px}.actions{gap:10px}.secondary{flex:1}.primary,.secondary{padding:11px;font-size:12px}.rules-note{font-size:10px}.log-heading{margin-top:16px}.history{max-height:98px}.board-watermark{font-size:6px;letter-spacing:2px;bottom:4px}footer{margin-top:24px;padding:17px 0 23px;font-size:8px;letter-spacing:0}footer>span:last-child{white-space:nowrap}.footer-separator{margin:0 5px}.result-card{padding:24px}.result-card h2{font-size:24px}.result-card .primary{min-width:160px}}
@media(max-width:360px){.shell{padding:0 12px}.intro p{max-width:270px}.intro .eyebrow span{margin-left:5px;padding-left:7px}.command-panel{padding:13px}.player{gap:7px;padding:13px 8px}.player-status{font-size:8px}.field-bottom{font-size:8px}.brand{font-size:15px}}
.placement-dock{display:flex;align-items:center;gap:10px;margin-top:14px;padding:11px 12px;border:1px solid #2d4c63;background:linear-gradient(110deg,#10273a,#0b1727);border-radius:4px;--side:var(--cyan);transition:border-color .2s}.placement-dock.locked{border-color:var(--side);box-shadow:inset 3px 0 var(--side),0 0 22px color-mix(in srgb,var(--side) 12%,transparent)}.target-info{flex:1;min-width:0}.target-info>span{display:block;font-size:9px;letter-spacing:1px;color:var(--muted)}.target-info>strong{display:block;font:12px/1.6 Consolas,"Microsoft YaHei",sans-serif;font-weight:400;color:var(--side);margin-top:3px}.placement-dock .primary{flex:none;min-width:112px;background:var(--side);border-color:var(--side);padding:9px 12px;gap:10px;min-height:42px}.cancel-target{flex:none;width:30px;height:40px;border:0;background:none;color:var(--muted);font-size:21px}.victory-hud{position:absolute;z-index:5;pointer-events:none;left:0;right:0;top:12%;text-align:center;--victor:var(--cyan);text-shadow:0 0 24px #060b16}.victory-hud>span{font:9px Consolas,monospace;letter-spacing:5px;color:var(--victor)}.victory-hud>strong{display:block;font-size:clamp(17px,2.4vw,28px);font-weight:500;letter-spacing:7px;color:#f4fbff;margin-top:7px}.victory-hud>i{display:block;height:1px;width:65px;background:var(--victor);box-shadow:0 0 14px var(--victor);margin:13px auto 9px}.victory-hud>small{font-size:9px;letter-spacing:3px;color:#9ab4c8}.board-frame.cinematic{border-color:var(--victor,var(--cyan));box-shadow:0 0 80px color-mix(in srgb,var(--victor,var(--cyan)) 15%,transparent),inset 0 0 80px #04091060}.result{background:#030b1438;backdrop-filter:blur(2px)}.result-card{position:relative;overflow:hidden;width:min(400px,85%);padding:24px 30px 26px;--victor:var(--cyan);background:linear-gradient(150deg,#152f43f5,#08131ff5);border-color:var(--victor);box-shadow:0 0 80px color-mix(in srgb,var(--victor) 25%,transparent);clip-path:polygon(18px 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%,0 18px);animation:result-arrival .7s ease-out}.result-card:before{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(0deg,transparent 0 4px,#54e5ff06 5px),radial-gradient(ellipse at 50% 0,color-mix(in srgb,var(--victor) 16%,transparent),transparent 60%)}.result-emblem{position:relative;width:92px;height:92px;margin:0 auto 18px;display:grid;place-items:center;color:var(--victor)}.result-emblem>span{font:58px/1 Georgia;text-shadow:0 0 25px var(--victor)}.result-emblem>i{position:absolute;inset:0;border:1px solid var(--victor);border-radius:50%;opacity:.55}.result-emblem>i:first-child{inset:7px;border-style:dashed;transform:rotate(25deg)}.result-emblem:after{content:"";position:absolute;inset:-8px;border:1px solid var(--victor);border-radius:50%;opacity:.13}.result-card h2{font-size:30px;letter-spacing:5px;margin:10px 0}.result-card .eyebrow{font-size:8px;letter-spacing:2.5px;color:var(--victor)}.result-card p{font-size:11px;line-height:1.8;margin-bottom:17px}.result-memory{display:grid;grid-template-columns:1fr 1fr;padding:13px 0;margin-bottom:20px;border-top:1px solid #8fb9d62b;border-bottom:1px solid #8fb9d62b;gap:10px;font-size:9px;color:var(--muted)}.result-memory>span+span{border-left:1px solid #8fb9d62b}.result-memory strong{display:block;color:#cbe5f5;font:11px/1.6 Consolas,"Microsoft YaHei",sans-serif;font-weight:400;margin-top:4px}.result-card .primary{background:var(--victor);border-color:var(--victor)}.result-links{display:flex;justify-content:center;gap:16px}.result-links .text-btn{padding-top:15px}.result-links .text-btn:hover{color:var(--victor)}@keyframes result-arrival{from{opacity:0;transform:translateY(15px) scale(.93)}to{opacity:1;transform:translateY(0) scale(1)}}
@media(max-width:760px){.result-card{padding:14px 17px 15px;width:85%}.result-emblem{width:46px;height:46px;margin-bottom:12px}.result-emblem>span{font-size:36px}.result-emblem>i:first-child{inset:4px}.result-card .eyebrow{font-size:7px;letter-spacing:1.5px}.result-card h2{font-size:23px;line-height:1.3;margin:8px 0;letter-spacing:3px}.result-card p{font-size:9px;margin-bottom:10px}.result-memory{padding:8px 0;margin-bottom:10px;gap:7px;font-size:8px}.result-memory strong{font-size:9px}.result-card .primary{padding:8px;min-height:35px}.result-links .text-btn{padding-top:10px;font-size:9px}.victory-hud{top:10%}.victory-hud>span{font-size:7px;letter-spacing:3px}.victory-hud>strong{font-size:18px;letter-spacing:4px}.victory-hud>small{font-size:7px;letter-spacing:2px}.victory-hud>i{margin:9px auto 6px;width:45px}.arena-layout{gap:20px}}
@media(max-width:360px){.placement-dock{padding:9px;gap:5px}.placement-dock .primary{min-width:100px;font-size:11px;padding:9px}.target-info>strong{font-size:11px}.result-emblem{display:none}.result-card{padding:13px 14px}.result-card h2{font-size:22px}.result-links .text-btn{padding-top:8px}.result-card p{font-size:8px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.board-frame.impact,.result-card{animation:none}button{transition:none}}