@font-face{font-family:Geist;src:url('./fonts/geist-sans.woff2') format('woff2');font-style:normal;font-weight:100 900;font-display:swap}
@font-face{font-family:GeistMono;src:url('./fonts/geist-mono.woff2') format('woff2');font-style:normal;font-weight:100 900;font-display:swap}
:root{color-scheme:dark;--paper:#212121;--line:#383838;--ink:#f4f4f4;--mute:#a0a0a0;--soft:#717171;--accent:#dddddd;--sans:Geist,Arial,'PingFang SC','Microsoft YaHei',sans-serif;--mono:GeistMono,ui-monospace,monospace}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;-webkit-font-smoothing:antialiased}body::before{content:"";position:fixed;inset:0;pointer-events:none;background:radial-gradient(ellipse at 63% 36%,#ffffff04,transparent 64%);z-index:-1}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}button:disabled{cursor:default}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:5px}[hidden]{display:none!important}.page-shell{max-width:1376px;margin:0 auto;padding:0 clamp(1.25rem,4vw,3rem)}.site-header{height:86px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.wordmark{font-weight:600;font-size:26px;letter-spacing:-1.5px}.wordmark-light{font-weight:300}.wordmark sup{vertical-align:top;display:inline-block;font-family:var(--sans);font-size:12px;letter-spacing:0;padding-top:4px;margin-left:4px}.header-center{display:flex;align-items:center;gap:14px;font-family:var(--mono);font-size:12px;letter-spacing:1.5px;color:var(--mute);margin-left:-15px}.header-line{width:24px;height:1px;background:var(--soft)}.header-actions{display:flex;gap:8px}.small-button{background:linear-gradient(#2d2d2d,#272727);border:1px solid #3d3d3d;border-radius:8px;font-size:14px;min-width:42px;height:38px;padding:0 14px;box-shadow:inset 0 1px #ffffff07,0 2px 3px #0002;transition:background .15s,transform .15s}.small-button:hover{background:#353535}.small-button:active{transform:translateY(1px)}.language-button{font-family:var(--mono);padding:0 10px}main{padding-top:40px}.game-layout{display:grid;grid-template-columns:minmax(260px,1fr) minmax(390px,490px);gap:clamp(40px,8vw,120px);align-items:center;max-width:1136px;margin:auto}.intro{padding-bottom:3px}.eyebrow{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;letter-spacing:1.15px;color:var(--mute);line-height:1.6}.cross{font-family:var(--sans);font-size:22px;color:var(--ink);font-weight:300;margin-right:4px}.eyebrow-divider{margin:0 2px;color:var(--soft)}h1{font-size:clamp(64px,6.8vw,90px);font-weight:300;line-height:1.04;letter-spacing:-.048em;margin:34px 0 27px}h1 span{color:#969696}.intro-description{font-size:17px;color:#b5b5b5;line-height:1.9;margin:0;letter-spacing:.02em}.game-actions{margin-top:31px;display:flex;flex-direction:column;align-items:flex-start;gap:14px}.primary-button{min-height:52px;min-width:180px;display:flex;align-items:center;justify-content:space-between;gap:34px;padding:0 21px;border:1px solid #f2f2f2;border-radius:9px;background:linear-gradient(#f4f4f4,#d8d8d8);color:#282828;font-size:15px;font-weight:500;box-shadow:inset 0 1px #fff,0 4px 10px #0003,0 1px 1px #0008;transition:transform .18s,box-shadow .18s}.primary-button:hover{transform:translateY(-2px);box-shadow:inset 0 1px #fff,0 6px 16px #0005}.primary-button:active{transform:translateY(1px)}.button-arrow{font-size:24px;font-weight:300}.keyboard-hint{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--mute);margin-left:3px}kbd{font-family:var(--mono);font-size:12px;border:1px solid #484848;border-bottom-width:2px;border-radius:4px;min-width:21px;height:20px;display:inline-flex;align-items:center;justify-content:center;color:#b3b3b3}.intro-bottom{margin-top:45px;display:flex;gap:18px;align-items:center}.intro-bottom p{margin:0;font-size:13px;line-height:1.8;color:var(--mute)}.tiny-spectrum{display:flex;gap:3px;align-items:center;height:36px}.tiny-spectrum i{width:5px;height:29px;display:block;border-radius:1px;background:#dddddd}.tiny-spectrum i:nth-child(2){opacity:.87;height:33px}.tiny-spectrum i:nth-child(3){opacity:.74;height:37px}.tiny-spectrum i:nth-child(4){opacity:.61;height:32px}.tiny-spectrum i:nth-child(5){opacity:.48;height:27px}.tiny-spectrum i:nth-child(6){opacity:.35;height:31px}.tiny-spectrum i:nth-child(7){opacity:.24;height:35px}.tiny-spectrum i:nth-child(8){opacity:.13;height:29px}.game-column{min-width:0}.console{padding:0 24px;background:linear-gradient(145deg,#292929 0%,#232323 48%,#1f1f1f 100%);border:1px solid #3c3c3c;border-radius:20px;box-shadow:inset 0 1px #ffffff08,inset 0 -1px 2px #0008,0 18px 40px #0002,0 3px 4px #0003;position:relative}.console-top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:22px 0 19px;border-bottom:1px solid #3b3b3b;font-size:12px}.console-title{display:flex;align-items:center;gap:9px;color:#b6b6b6;white-space:nowrap}.status-light{width:6px;height:6px;background:#858585;border-radius:50%;box-shadow:0 0 0 3px #ffffff03}.status-light.running{background:var(--accent);box-shadow:0 0 9px #dddddd2b}.mono{font-family:var(--mono)}.console-id{color:var(--soft);font-size:12px;letter-spacing:.5px}.metrics{display:grid;grid-template-columns:1fr 1fr 1fr;padding:23px 0 21px}.metric{padding-left:26px;border-left:1px solid #3a3a3a}.metric:first-child{padding-left:3px;border-left:0}.metric-label{display:block;font-size:12px;color:var(--mute);margin-bottom:8px;letter-spacing:.035em}.metric-number{font-family:var(--mono);font-weight:400;line-height:1.2;font-size:32px;font-variant-numeric:tabular-nums;letter-spacing:-1.4px}.unit{font-size:13px;letter-spacing:0;color:var(--soft);margin-left:7px}.timer-track{height:3px;background:#373737;border-radius:3px;overflow:hidden;margin-bottom:18px}.timer-track>div{height:100%;width:100%;background:var(--accent);transform-origin:left;transition:background .3s}.timer-metric.warning .metric-number{color:#aeaeae}.board-wrap{position:relative;border-radius:12px;background:#1b1b1b;border:1px solid #161616;box-shadow:inset 0 3px 8px #0007,0 1px #ffffff08;padding:12px;isolation:isolate}.board{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;aspect-ratio:1;position:relative}.tile{padding:0;border:0;border-radius:7px;box-shadow:inset 0 1px #ffffff28,inset 0 -2px 2px #00000013,0 2px 3px #0002;transition:transform .13s,box-shadow .13s;min-width:0;position:relative;touch-action:manipulation}.tile:enabled:hover{transform:translateY(-2px);box-shadow:inset 0 1px #ffffff38,0 4px 8px #0004}.tile:enabled:active{transform:scale(.96)}.tile:focus-visible{outline:2px solid white;outline-offset:2px;z-index:1}.tile:disabled{opacity:1}.tile.wrong::after{content:'×';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:var(--sans);font-size:32px;color:#1119}.tile.reveal::after{content:'';position:absolute;inset:12%;border:2px solid #ffffffd9;border-radius:4px}.console-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:59px;font-size:13px;color:var(--mute)}.streak{display:flex;align-items:center;gap:7px;white-space:nowrap}.streak-mark{font-size:17px;color:#8d8d8d}.streak.active,.streak.active .streak-mark{color:var(--accent)}.console-footnote{display:flex;justify-content:space-between;gap:16px;margin:17px 5px 0;font-size:12px;line-height:1.6;color:var(--mute)}#best-label{white-space:nowrap}#best{font-family:var(--mono);font-weight:400;margin-left:4px;color:#c6c6c6}#feedback.error{color:#aeaeae}#feedback.success{color:var(--accent)}.instruction-strip{max-width:1136px;margin:49px auto 0;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;padding:25px 0 28px;color:var(--mute);font-size:14px}.instruction-strip>div{display:flex;align-items:center;gap:14px}.instruction-number{font-family:var(--mono);color:var(--soft);font-size:12px}footer{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:15px;padding:24px 0 28px;color:var(--soft);font-family:var(--mono);font-size:12px;letter-spacing:.7px}.footer-cross{color:var(--mute);font-size:18px;margin-left:20px}.board-overlay{position:absolute;inset:0;z-index:3;border-radius:12px;background:#202020ed;backdrop-filter:blur(15px);display:flex;align-items:center;justify-content:center;text-align:center;padding:22px}.overlay-content{width:100%}.overlay-content .eyebrow{justify-content:center;font-size:12px}.overlay-content h2{font-size:40px;font-weight:300;letter-spacing:-1px;margin:17px 0}.overlay-content p{font-size:14px;color:var(--mute);line-height:1.8;white-space:pre-line;margin:0 0 23px}.overlay-button{margin:0 auto;min-width:170px}.score-pop{position:absolute;left:50%;top:45%;transform:translate(-50%,-50%);pointer-events:none;z-index:4;font-family:var(--mono);font-size:42px;font-weight:500;color:white;text-shadow:0 2px 15px #0008;opacity:0}.score-pop.show{animation:score-pop .6s ease-out}@keyframes score-pop{0%{opacity:0;transform:translate(-50%,-30%) scale(.9)}25%{opacity:1}100%{opacity:0;transform:translate(-50%,-90%) scale(1.08)}}.board-wrap.shake{animation:shake .24s ease-in-out}@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}dialog{width:min(480px,calc(100% - 32px));padding:28px;border:1px solid #484848;background:linear-gradient(145deg,#2c2c2c,#232323);color:var(--ink);border-radius:17px;box-shadow:0 30px 100px #0008}dialog::backdrop{background:#101010b3;backdrop-filter:blur(7px)}.dialog-top{display:flex;align-items:center;justify-content:space-between}dialog h2{font-size:28px;font-weight:400;letter-spacing:-.04em;margin:20px 0}dialog p,dialog li{font-size:15px;color:#b9b9b9;line-height:1.8}dialog ul{padding-left:20px}dialog li+li{margin-top:10px}dialog .help-note{font-size:12px;color:var(--mute);border-top:1px solid var(--line);padding-top:16px;margin-bottom:0}
@media(min-width:1450px){main{padding-top:48px}.game-layout{gap:120px}.instruction-strip{margin-top:58px}}
@media(max-width:1000px){.game-layout{gap:45px;grid-template-columns:minmax(230px,1fr) minmax(340px,470px)}h1{font-size:70px}.intro-description{font-size:16px}.console{padding:0 19px}.metric{padding-left:17px}.metric-number{font-size:29px}.intro-bottom{margin-top:32px}.instruction-strip{font-size:13px;gap:12px}}
@media(max-width:760px){.page-shell{padding:0 22px}.site-header{height:80px}.wordmark{font-size:24px}.header-center{display:none}main{padding-top:30px}.game-layout{display:flex;flex-direction:column;gap:24px;align-items:stretch;max-width:510px}.intro{display:grid;grid-template-columns:1fr auto;gap:0 10px;align-items:center}.intro .eyebrow{grid-column:1 / -1;font-size:12px;gap:8px}h1{font-size:51px;margin:17px 0 13px;line-height:1.02;letter-spacing:-.05em}h1 br{display:none}h1 span{display:block}.intro-description{font-size:14px;line-height:1.85;grid-column:1 / -1}.game-actions{margin:0;grid-column:2;grid-row:2;align-items:flex-end}.primary-button{min-width:148px;min-height:49px;padding:0 16px;gap:18px;font-size:14px}.keyboard-hint{display:none}.intro-bottom{display:none}.console{padding:0 18px;border-radius:17px}.console-top{padding:17px 0 15px}.metrics{padding:19px 0 17px}.metric-number{font-size:29px}.metric{padding-left:18px}.board-wrap{padding:10px}.board{gap:7px}.console-bottom{min-height:53px;font-size:12px}.console-footnote{margin-top:13px}.instruction-strip{max-width:510px;margin-top:25px;gap:12px;flex-wrap:wrap;justify-content:flex-start;padding:19px 0 21px}.instruction-strip>div{gap:8px;font-size:12px;flex:1 1 42%}.instruction-strip>div:last-child{flex:1 1 100%}footer{font-size:12px;line-height:1.7;padding:18px 0 22px}footer>span:last-child{display:none}.overlay-content h2{font-size:32px}.overlay-content p{font-size:13px}.overlay-content .primary-button{min-height:46px}}
@media(max-width:370px){.page-shell{padding:0 15px}h1{font-size:46px}.primary-button{min-width:135px}.console{padding:0 14px}.metric-number{font-size:26px}.metric{padding-left:13px}.console-id{font-size:12px;letter-spacing:0}.console-footnote{font-size:12px;gap:8px}.overlay-content h2{font-size:28px}.overlay-content p{margin-bottom:16px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001ms!important;transition:none!important;scroll-behavior:auto!important}}

@media(max-width:760px){.arcade-back{display:flex;font-family:var(--sans);font-size:14px;letter-spacing:0;margin:0}.wordmark{font-size:21px}.header-actions{gap:5px}.header-actions .small-button{padding:0 9px}}

.arcade-back{font-size:14px;letter-spacing:0}
@media(max-width:520px){.site-header .wordmark{display:none}}

@media(max-width:480px){
  .game-layout .intro{grid-template-columns:minmax(0,1fr)}
  .game-layout .game-actions{grid-column:1;grid-row:auto;align-items:stretch;margin-top:18px}
}