@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600&family=Noto+Sans+SC:wght@400;500&display=swap');
:root{--bg:#152E40;--panel:#1C384B;--text:#E6EDF0;--line:#77919E;--accent:#C98A69;--muted:#b4c4cb;--serif:"Noto Serif SC","Songti SC",SimSun,serif;--sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.7 var(--sans)}button,input,select{font:inherit}button,a,select,input{touch-action:manipulation}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-underline-offset:5px}button{border:1px solid var(--line);background:transparent;color:var(--text);border-radius:2px;padding:10px 16px}button:hover,.secondary:hover{background:#29485b}button:disabled{opacity:.5;cursor:default}a:hover{color:var(--accent)}:focus-visible{outline:2px solid 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.intro{position:fixed;inset:0;z-index:100;background:var(--bg);display:flex;flex-direction:column;padding:30px 48px}.intro[hidden]{display:none}.intro-top,.intro-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:12px;color:var(--muted)}.intro-top button{border:0}.intro-stage{margin:auto;text-align:center;width:min(100%,1000px)}.intro-stage svg{width:100%;max-height:55vh}.intro-stage p{font-size:13px;letter-spacing:.06em;color:var(--muted);margin:10px 0 18px}.intro-brand{font-size:34px;opacity:0;animation:brand 10s both}.brain-lines{stroke-dasharray:1200;stroke-dashoffset:1200;animation:connect 4s ease forwards}.intro-signal{stroke-dasharray:540;stroke-dashoffset:540;animation:connect 3s 1s ease forwards}.intro-fly{animation:flyaway 10s ease both;transform-origin:center}.intro-box{animation:boxaway 10s both}.intro-flight{opacity:0;animation:flightpath 10s both}.intro-progress{height:2px;background:var(--line);flex:1;max-width:280px;position:relative}.intro-progress:after{content:"";display:block;width:0;height:2px;background:var(--accent);animation:progress 10s linear forwards}@keyframes connect{to{stroke-dashoffset:0}}@keyframes brand{0%,72%{opacity:0;transform:translateY(8px)}85%,100%{opacity:1;transform:none}}@keyframes flyaway{0%,40%{transform:none}54%{transform:translate(45px,-35px) rotate(-15deg)}72%{transform:translate(260px,-80px) rotate(30deg)}86%,100%{transform:translate(265px,-45px)}}@keyframes boxaway{0%,52%{opacity:1}72%,100%{opacity:.12}}@keyframes flightpath{0%,48%{opacity:0}65%,100%{opacity:1}}@keyframes progress{to{width:100%}}
@media(min-width:1450px){.header{border-left:1px solid #496373;border-right:1px solid #496373}}
@media(max-width:1050px){.header{padding:0 28px}main{padding:0 28px}.hero h1{font-size:42px}.hero-note{min-width:270px}.lab{grid-template-columns:minmax(0,1fr) 280px}.control-body{padding:18px}.arena-stamp{bottom:75px;left:18px}.metrics>div{padding:14px 15px}.metrics strong.metric-word{font-size:18px}.arena-foot{gap:15px;padding:10px 16px}.about{gap:35px}footer{padding:0 28px 30px}}
@media(max-width:760px){.header{height:92px;padding:0 20px}.brand{font-size:12px;gap:6px}.brand strong{font-size:17px}.brand img{width:42px}.header nav{gap:18px;font-size:12px}.header .text-btn{font-size:11px}.header .text-btn span{display:none}main{padding:0 20px}.hero{padding:32px 0 26px;gap:20px}.hero h1{font-size:34px}.hero-note{display:none}.lead{font-size:13px;margin-top:14px}.eyebrow{font-size:10px;margin-bottom:12px}.lab{grid-template-columns:1fr}.controls{border-left:0;border-top:1px solid var(--line)}.arena-wrap{min-height:0;padding-bottom:0}.arena-stamp{display:none}.panel-head{height:44px;padding:0 16px;font-size:11px}.metrics>div{padding:10px 16px}.metrics strong{font-size:28px}.metrics strong.metric-word{font-size:17px}.arena-foot{font-size:9px;gap:14px}.control-body{padding:18px}#settings{display:grid;grid-template-columns:1fr 1fr;column-gap:18px}#settings .select-label,#settings select,#settings .presets{grid-column:1/-1}.slider{margin-bottom:20px}.slider:last-child{grid-column:1/-1}.presets{margin-bottom:20px}.control-note{font-size:10px}.section{margin-top:45px}.section-heading{display:block}.section-heading>span{display:block;margin-top:12px}h2{font-size:22px}h3{font-size:18px}.result{padding:22px;flex-direction:column;gap:20px}.result-actions{display:grid;grid-template-columns:1fr 1fr}.result-actions .text-btn{grid-column:1/-1}.result-actions button{font-size:11px;padding:10px 7px}.about{grid-template-columns:1fr;gap:15px;padding-top:26px}.about-title{position:relative}.about-title img{position:absolute;right:0;top:12px;width:110px;margin:0}.about-content article{gap:16px}.media{grid-template-columns:1fr;gap:25px;padding-top:26px}.download{margin:45px 0 28px;display:block}.download h2{font-size:20px}.download .inline{margin-top:22px}footer{padding:0 20px 26px;flex-wrap:wrap;font-size:10px}.intro{padding:20px}.intro-top,.intro-bottom{font-size:10px}.intro-brand{font-size:24px}.intro-bottom{flex-wrap:wrap}.intro-stage p{font-size:11px}.intro-progress{order:3;min-width:100%}.intro-top button{padding:8px}.svg-label{font-size:15px}}
@media(max-width:390px){.header nav{gap:12px}.header nav a:last-child{display:none}.hero h1{font-size:30px}.metrics>div{padding:10px}.metrics strong.metric-word{font-size:15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.intro{display:none}}