@import url('./assets/fonts.css');
:root{color-scheme:dark;--bg:#101612;--surface:#151d17;--line:#2c362e;--muted:#9aab9c;--text:#f0f0e5;--lime:#cdf68a;--orange:#e6ab7c;--serif:'Instrument Serif',Georgia,serif;--sans:'DM Sans',Arial,sans-serif;--mono:ui-monospace,'Cascadia Code',Consolas,monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;-webkit-font-smoothing:antialiased}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}button:disabled{cursor:wait;opacity:.55}button:focus-visible,a:focus-visible{outline:2px solid var(--lime);outline-offset:5px}a{color:inherit}button{border:0}button, a{touch-action:manipulation}button svg{width:20px;height:20px;display:block}button:hover:not(:disabled){filter:brightness(1.12)}button:active:not(:disabled){transform:translateY(1px)}.skip-link{position:absolute;left:20px;top:-70px;background:var(--lime);color:var(--bg);padding:15px;z-index:20}.skip-link:focus{top:10px}.site-header{height:90px;margin:0 auto;max-width:1440px;padding:0 56px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:24px}.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:23px;letter-spacing:-1px;text-decoration:none}.brand-icon{font-family:Georgia,serif;font-size:34px;color:var(--lime);transform:rotate(-7deg)}.brand-period{align-self:flex-start;font-size:11px;letter-spacing:0;margin:7px 0 0 -5px}.site-header nav{display:flex;gap:34px;align-items:center;height:100%;font-size:14px}.site-header nav a{text-decoration:none;display:flex;align-items:center;height:100%;position:relative}.nav-active:after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:2px;background:var(--lime)}.text-button{padding:0;background:none;font-size:14px;text-align:left}.text-button span{margin-left:9px;color:var(--lime)}.header-note{font-family:var(--mono);font-size:12px;letter-spacing:1px;color:var(--muted)}main{max-width:1328px;margin:auto;padding:0 56px}.intro{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:36px 0 31px}.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:1.2px;color:var(--muted);margin:0 0 12px}.tiny-cross{color:var(--lime);margin-right:7px;font-size:18px}.intro h1{font-family:var(--serif);font-size:62px;font-weight:400;line-height:1.05;letter-spacing:-1.8px;margin:0 0 13px}.intro em{color:var(--lime);font-weight:400}.intro-copy>p:last-child{margin:0;color:var(--muted);font-size:15px}.experiment-stamp{display:flex;align-items:center;gap:16px;font-size:12px;line-height:1.6;font-family:var(--mono);letter-spacing:1px;color:var(--muted)}.stamp-line{height:42px;width:1px;background:var(--line);transform:rotate(15deg)}.arena{display:grid;grid-template-columns:minmax(180px,1fr) minmax(350px,1.78fr) minmax(180px,1fr);gap:34px;align-items:start;padding-top:15px;border-top:1px solid var(--line);scroll-margin-top:20px}.specimen{--accent:var(--lime);padding-top:10px;min-width:0}.black-specimen{--accent:var(--orange)}.specimen-label{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:12px;letter-spacing:.6px;color:var(--muted)}.side-tag{display:flex;align-items:center;gap:6px;color:var(--text)}.piece-dot{display:inline-block;width:8px;height:8px;border-radius:50%;flex-shrink:0}.white-dot{background:var(--text);border:1px solid #eee}.black-dot{background:#131714;border:1px solid var(--muted)}.portrait{position:relative;height:165px;margin-top:17px;overflow:hidden;background:#141914}.portrait img{width:100%;height:100%;object-fit:cover;mix-blend-mode:lighten;mask-image:linear-gradient(transparent,#000 18%,#000 75%,transparent);opacity:.95}.black-specimen .portrait img{transform:scaleX(-1);filter:saturate(.72)}.portrait-caption{position:absolute;left:8px;bottom:4px;font-family:var(--mono);font-size:10px;color:#81917f;letter-spacing:.3px}.portrait-cross{position:absolute;z-index:1;color:#5d6e5f;font-family:var(--mono);font-size:17px}.tl{top:0;left:5px}.br{right:5px;bottom:0}.player-heading{display:flex;align-items:center;justify-content:space-between;margin-top:13px}.player-heading h2{font-family:var(--serif);font-size:39px;line-height:1.1;font-weight:400;margin:0;letter-spacing:-.6px}.player-symbol{font-family:Georgia,serif;color:var(--accent);font-size:28px}.player-status{font-size:13px;color:var(--muted);margin:8px 0 23px;display:flex;align-items:center;gap:7px;min-height:18px}.specimen.active .player-status{color:var(--accent)}.specimen.active .player-status:before{content:'';height:5px;width:5px;background:var(--accent);border-radius:50%;box-shadow:0 0 8px color-mix(in srgb,var(--accent) 50%,transparent)}.brain-heading{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:17px;font-family:var(--mono);font-size:11px;letter-spacing:.7px;color:var(--muted)}.signal-label{font-size:10px;color:var(--accent)}.brain-wrap{height:145px;position:relative;margin:7px 0 8px}.brain-wrap canvas{display:block;width:100%;height:100%}.brain-axis,.brain-view-label{position:absolute;bottom:4px;font-size:10px;font-family:var(--mono);color:#7f927d}.brain-axis{left:0}.brain-view-label{right:0}.neural-stats{display:grid;grid-template-columns:1fr 1.2fr 1fr;padding:11px 0 10px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);gap:8px}.neural-stats>div{display:flex;flex-direction:column;gap:4px}.neural-stats strong{font-family:var(--mono);font-size:18px;font-weight:400;letter-spacing:-.5px}.neural-stats span{font-size:11px;color:var(--muted);white-space:nowrap}.waveform{width:100%;height:33px;display:block;margin:10px 0}.captured{display:flex;align-items:center;gap:14px;min-height:30px;padding-top:8px}.captured>span{color:var(--muted);font-family:var(--mono);font-size:10px;letter-spacing:.6px}.captured>div{color:var(--muted);display:flex;flex-wrap:wrap;gap:0}.captured img{width:19px;height:22px;filter:drop-shadow(0 1px 1px #000)}.match-column{min-width:0}.match-top{display:flex;align-items:center;justify-content:space-between;min-height:38px;margin-bottom:9px}.match-label{font-family:var(--mono);font-size:11px;letter-spacing:.6px;display:flex;align-items:center;gap:8px}.live-dot{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 12px #cdf68a44}.live-dot.paused{background:var(--muted);box-shadow:none}#live-label{color:var(--lime)}.slash{color:#5e6b5d;margin:0 3px}#match-number{color:var(--muted)}.icon-button{display:flex;align-items:center;justify-content:center;width:38px;height:38px;background:none;color:var(--muted);border:1px solid transparent;border-radius:5px;flex-shrink:0}.icon-button:hover{background:#232d24;color:var(--text);border-color:var(--line)}.board-shell{position:relative;border:7px solid #263729;border-radius:3px;box-shadow:0 14px 44px #0003;isolation:isolate}.board{display:grid;grid-template-columns:repeat(8,1fr);aspect-ratio:1;position:relative;background:#e7e9d9;overflow:hidden}.square{position:relative;aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:#e4e7d5}.square.dark{background:#69856c}.square.last{background:#d0e882}.square.dark.last{background:#a5c164}.square.check{background:#d58b70}.square img{width:87%;height:87%;position:relative;z-index:2;filter:drop-shadow(0 2px 1px #23301c35);user-select:none;pointer-events:none}.square .coord{position:absolute;font-size:10px;font-weight:600;line-height:1;color:#49624b;z-index:3}.square.dark .coord{color:#edf0dc}.rank{top:4px;left:4px}.file{bottom:3px;right:4px}.square.moved img{animation:piece-arrive .32s ease-out}@keyframes piece-arrive{from{transform:translateY(-7px);opacity:.5}to{transform:translateY(0);opacity:1}}.game-overlay{position:absolute;inset:0;background:#0b160be8;backdrop-filter:blur(7px);display:flex;align-items:center;justify-content:center;flex-direction:column;padding:22px;text-align:center;z-index:6}.game-overlay[hidden]{display:none}.game-overlay h2{font-family:var(--serif);font-weight:400;font-size:44px;margin:12px 0;color:var(--lime)}.game-overlay p{font-size:14px;color:var(--muted);line-height:1.5}.game-overlay .primary-button{margin-top:15px}.turn-indicator{display:flex;justify-content:space-between;gap:8px;align-items:center;padding:17px 0 15px;position:relative;font-size:13px}.turn-indicator>span:first-child{display:flex;gap:7px;align-items:center}#turn-detail{font-family:var(--mono);font-size:11px;color:var(--muted)}.turn-progress{position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--line);overflow:hidden}.turn-progress span{display:block;height:100%;width:0;background:var(--lime);transition:width .08s linear}.match-controls{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:17px 0 0}.primary-button{background:var(--lime);color:#172111;border:1px solid var(--lime);border-radius:5px;min-height:42px;padding:0 17px;display:flex;align-items:center;justify-content:center;gap:10px;font-size:14px;font-weight:600}.speed-control{display:flex;align-items:center;border:1px solid var(--line);padding:3px;border-radius:5px;gap:2px}.speed-control button{background:transparent;min-width:36px;min-height:32px;font-family:var(--mono);font-size:12px;color:var(--muted);border-radius:3px}.speed-control button.selected{background:#2a372a;color:var(--lime)}.local-note{text-align:center;color:var(--muted);font-size:11px;margin:15px 0 0}.local-note>span{font-size:10px;margin-right:5px;color:#77936c}.match-bottom{display:grid;grid-template-columns:1.5fr 1fr;gap:36px;margin:35px 0 0;border-top:1px solid var(--line);padding:25px 0}.panel-title{display:flex;justify-content:space-between;align-items:center;gap:12px}.panel-title h2{font-family:var(--serif);font-size:26px;font-weight:400;margin:0}.panel-title>span{font-size:10px;font-family:var(--mono);color:var(--muted);letter-spacing:.6px}.moves-list{height:97px;overflow:auto;scrollbar-color:#4a6046 transparent;scrollbar-width:thin;margin-top:14px;display:flex;align-content:flex-start;flex-wrap:wrap;gap:7px 15px}.move-pair{display:flex;gap:10px;align-items:center;font-size:13px;font-family:var(--mono);height:27px;min-width:126px}.move-pair .move-number{font-size:11px;color:var(--muted);min-width:22px}.move-san{min-width:37px;color:#e5e9df}.move-san.latest{color:var(--lime);background:#25371e;padding:4px;border-radius:3px}.empty-moves{color:var(--muted);font-size:14px;margin:5px 0}.move-footer{display:flex;justify-content:space-between;align-items:center;gap:14px;padding-top:13px;border-top:1px solid var(--line)}.move-footer>span{font-size:11px;color:var(--muted);line-height:1.5}.move-footer button{font-size:12px;white-space:nowrap}.score-panel{border-left:1px solid var(--line);padding-left:35px}.scoreboard{display:flex;justify-content:space-around;gap:15px;text-align:center;padding:14px 0 0}.scoreboard>div{display:flex;flex-direction:column;gap:1px}.score-name{font-size:13px}.white-name{color:var(--lime)}.black-name{color:var(--orange)}.scoreboard strong{font-family:var(--serif);font-size:46px;line-height:1.3;font-weight:400}.draw-score{color:var(--muted)}.score-panel>p{font-size:12px;color:var(--muted);text-align:center;margin:8px 0 0}.science-note{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:25px 0;display:flex;gap:20px;align-items:center}.science-mark{font-size:36px;color:var(--lime);line-height:1}.science-note p{margin:0;font-size:14px;line-height:1.7}.science-note p span{font-size:13px;color:var(--muted)}.science-note button{margin-left:auto;white-space:nowrap}footer{max-width:1328px;margin:auto;padding:25px 56px 33px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:10px;font-family:var(--mono);letter-spacing:.5px}.footer-divider{color:#53664d;margin:0 9px}footer>span:last-child{font-family:var(--sans);font-size:12px;letter-spacing:0}dialog{max-width:650px;width:calc(100% - 30px);max-height:88dvh;background:#18201a;color:var(--text);border:1px solid #43523e;border-radius:12px;padding:32px;box-shadow:0 20px 100px #0008;scrollbar-width:thin}dialog::backdrop{background:#050a07b8;backdrop-filter:blur(6px)}.dialog-top{display:flex;align-items:center;justify-content:space-between}.dialog-top .eyebrow{margin:0}.dialog-top button{font-size:28px}dialog h2{font-family:var(--serif);font-size:48px;font-weight:400;line-height:1.05;margin:15px 0 22px}dialog h2 em{color:var(--lime)}dialog>p{font-size:16px;line-height:1.65;color:#bac7b8}dialog h3{font-size:17px;margin:25px 0 10px}.method-steps{padding:0;list-style:none;counter-reset:step;margin:27px 0}.method-steps li{counter-increment:step;position:relative;padding:14px 0 14px 45px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:6px}.method-steps li:before{content:'0' counter(step);position:absolute;left:0;top:16px;font-family:var(--mono);font-size:12px;color:var(--lime)}.method-steps strong{font-size:15px}.method-steps span{font-size:14px;line-height:1.6;color:var(--muted)}.method-disclosure{background:#101711;border:1px solid var(--line);padding:20px;border-radius:5px;font-size:14px}.method-disclosure p{line-height:1.7;color:var(--muted);margin-bottom:0}.credits{font-size:13px;line-height:1.9}.credits a{color:var(--lime);text-underline-offset:3px}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:50;background:var(--lime);color:var(--bg);padding:13px 22px;max-width:90%;border-radius:5px;font-size:14px;box-shadow:0 4px 30px #0004}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.specimen.active .brain-wrap{background:radial-gradient(ellipse at 50% 50%,#cdf68a07,transparent 70%)}.black-specimen.active .brain-wrap{background:radial-gradient(ellipse at 50% 50%,#e6ab7c07,transparent 70%)}
.site-header{height:76px}.site-header nav{white-space:nowrap}main{max-width:1200px}.intro{padding:24px 0 20px}.intro h1{font-size:56px}.player-status{font-size:14px}.score-name{font-size:14px}.portrait-caption{font-size:11px}.neural-stats span{font-size:12px}.local-note{font-size:12px}
@media(min-width:1500px) and (min-height:950px){main{max-width:1328px}.arena{gap:40px}.intro{padding-top:32px;padding-bottom:29px}.portrait{height:175px}.brain-wrap{height:150px}.player-heading{margin-top:18px}.player-status{margin-bottom:27px}.match-bottom{margin-top:38px}.neural-stats{padding-top:14px;padding-bottom:14px}}
@media(min-width:801px) and (max-height:850px){.site-header{height:64px}main{max-width:1120px}.intro{padding:18px 0 17px}.intro .eyebrow{display:none}.intro h1{font-size:48px;margin-bottom:8px}.intro-copy>p:last-child{font-size:14px}.portrait{height:120px}.player-heading h2{font-size:33px}.player-status{margin-bottom:17px;font-size:12px}.brain-wrap{height:112px}.brain-heading{padding-top:12px}.neural-stats{padding:8px 0}.waveform{height:27px;margin:7px 0}.match-controls{padding-top:13px}.local-note{margin-top:10px}}
@media(max-width:1100px){.site-header{padding:0 30px}.header-note{display:none}main{padding:0 30px}.arena{gap:20px;grid-template-columns:minmax(155px,1fr) minmax(330px,1.9fr) minmax(155px,1fr)}.portrait{height:135px}.player-heading h2{font-size:34px}.neural-stats{gap:4px}.neural-stats strong{font-size:16px}.neural-stats span{font-size:10px}.brain-heading{font-size:10px}.signal-label{font-size:9px}.brain-wrap{height:130px}.specimen-label{font-size:10px;letter-spacing:0}.portrait-caption{font-size:9px}.primary-button{padding:0 12px}.speed-control button{min-width:30px}.experiment-stamp{font-size:10px}.intro h1{font-size:56px}footer{padding:25px 30px}}
@media(max-width:800px){.site-header{height:73px;padding:0 24px}.brand{font-size:21px}.site-header nav{gap:22px}.site-header nav,.text-button{font-size:13px}main{padding:0 24px;max-width:670px}.intro{padding:29px 0 26px}.intro h1{font-size:52px}.intro-copy>p:last-child{font-size:14px}.eyebrow{font-size:10px;letter-spacing:.8px}.experiment-stamp{display:none}.arena{grid-template-columns:1fr 1fr;gap:0 25px;padding-top:8px}.match-column{grid-row:2;grid-column:1/-1;max-width:520px;width:100%;margin:19px auto 0}.specimen{display:grid;grid-template-columns:1fr 74px;gap:0 5px;position:relative;padding-bottom:10px;border-bottom:1px solid var(--line)}.specimen-label{grid-column:1/-1;margin-bottom:10px;font-size:10px}.portrait{grid-column:2;grid-row:2/4;height:65px;width:78px;margin:0}.portrait-caption,.portrait-cross{display:none}.player-heading{grid-row:2;grid-column:1;margin:0}.player-heading h2{font-size:31px}.player-symbol{display:none}.player-status{grid-column:1;grid-row:3;font-size:11px;margin:3px 0 0;white-space:nowrap}.brain-heading,.brain-wrap,.neural-stats,.waveform,.captured{grid-column:1/-1}.brain-heading{padding-top:12px;margin-top:10px}.brain-wrap{height:93px;margin:2px 0 0}.brain-axis,.brain-view-label{display:none}.neural-stats{padding:8px 0;border-bottom:none}.neural-stats strong{font-size:14px}.neural-stats span{font-size:10px}.waveform{display:none}.captured{display:none}.match-top{margin-bottom:7px}.match-controls{padding-top:15px}.primary-button{min-height:44px;padding:0 17px}.speed-control button{min-width:39px}.match-bottom{grid-template-columns:1fr;gap:28px;margin-top:28px}.score-panel{border-left:0;border-top:1px solid var(--line);padding:24px 0 0}.scoreboard{justify-content:space-between;padding-left:25px;padding-right:25px}.moves-list{height:82px}.science-note{align-items:flex-start;gap:13px;flex-wrap:wrap;padding:23px 0}.science-note p{font-size:13px}.science-note p span{font-size:12px}.science-note button{margin-left:42px;font-size:13px}.science-mark{font-size:29px}.panel-title h2{font-size:25px}footer{max-width:670px;padding:23px 24px;flex-direction:column;gap:10px;font-size:10px}.local-note{font-size:11px}}
@media(max-width:420px){main{padding:0 17px}.site-header{padding:0 17px}.site-header nav{gap:14px}.brand{font-size:19px;gap:5px}.brand-icon{font-size:29px}.brand-period{font-size:9px}.intro h1{font-size:46px}.intro-copy>p:last-child{font-size:13px}.arena{column-gap:17px}.specimen{grid-template-columns:1fr 50px}.portrait{width:57px;height:60px}.player-heading h2{font-size:29px}.player-status{font-size:10px}.neural-stats span{font-size:9px}.signal-label{font-size:8px}.match-controls{gap:6px}.primary-button{padding:0 13px;font-size:13px}.speed-control button{min-width:30px}.match-controls .icon-button{width:32px}.match-label{font-size:10px}.board-shell{border-width:5px}dialog{padding:22px}dialog h2{font-size:41px}.move-footer{align-items:flex-start}.move-footer>span{max-width:180px}}
@media(max-width:800px){.intro{padding:25px 0 23px}.brain-wrap{height:60px}.brain-heading{font-size:10px}.neural-stats span{font-size:10px}.portrait-caption{display:none}.site-header nav{gap:18px}.site-header nav a{white-space:nowrap}.brain-heading{margin-top:6px;padding-top:10px}.player-status{font-size:11px}.neural-stats{padding:7px 0}.intro h1{font-size:50px}}
@media(max-width:420px){.intro h1{font-size:44px}.site-header nav{gap:12px;font-size:12px}.site-header nav .text-button{font-size:12px}.text-button span{margin-left:4px}.player-status{font-size:10px}.neural-stats span{font-size:9px}}
@media(max-width:800px){.specimen{grid-template-columns:minmax(0,1fr) 66px}.specimen>*{min-width:0}.portrait{grid-row:2;width:66px;height:45px}.player-status{grid-column:1/-1;white-space:normal;margin-top:5px;min-height:16px}.match-column{display:flex;flex-direction:column}.match-top{order:0}.match-controls{order:1;padding:0 0 13px}.board-shell{order:2}.turn-indicator{order:3}.local-note{order:4}.neural-stats span{white-space:normal}}
@media(max-width:420px){.specimen{grid-template-columns:minmax(0,1fr) 52px}.portrait{width:52px;height:41px}.signal-label{display:none}.brain-heading{font-size:10px}.neural-stats{grid-template-columns:1fr 1fr}.neural-stats>div:last-child{display:none}.neural-stats span{font-size:11px}.player-status{font-size:11px}.specimen-label{font-size:9px}.player-heading h2{font-size:28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}