*{box-sizing:border-box} :root{color-scheme:light;--bg:#f4f5ee;--surface:#fff;--text:#192c25;--muted:#51675c;--line:#dbe4d9;--accent:#245c48;--hero:#173b31} :root.dark{color-scheme:dark;--bg:#131c18;--surface:#1e2a24;--text:#ecf3ec;--muted:#b5c8bc;--line:#40554a;--accent:#a7e2bc;--hero:#24553f} body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,"Microsoft YaHei",sans-serif;overflow-wrap:anywhere} header{padding:14px max(16px,calc((100% - 960px)/2));display:flex;gap:12px;align-items:center;background:var(--surface);border-bottom:1px solid var(--line)} header strong{font-size:20px} header span,small,.muted{color:var(--muted)} main{max-width:990px;margin:auto;padding:18px 15px calc(85px + env(safe-area-inset-bottom))} h1,h2,h3,p{margin:0 0 10px} h1{font-size:clamp(26px,5vw,42px);line-height:1.2} h2{font-size:21px} h3{font-size:17px} article,.panel,.hero{background:var(--surface);border:1px solid var(--line);border-radius:17px;padding:16px;margin-bottom:12px} .hero{background:var(--hero);color:white;padding:clamp(20px,5vw,40px);border:0} .hero p{color:#d2e8d9} .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,145px),1fr));gap:8px} .grid article{margin:0} .grid b{display:block;font-size:24px} section{margin:22px 0} button,input,textarea,select{font:inherit;color:inherit;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:9px 12px;min-height:44px;max-width:100%} button{cursor:pointer} button:hover{border-color:var(--accent)} .primary{background:var(--hero);color:white} .selected{outline:2px solid var(--accent)} .options{display:grid;gap:8px;margin:12px 0} .options button{text-align:left} .row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:8px 0} label{display:block;margin:8px 0} label input:not([type=checkbox]),textarea,label select{display:block;width:100%} textarea{min-height:90px} nav{position:fixed;inset:auto 0 0;background:var(--surface);border-top:1px solid var(--line);display:flex;justify-content:center;padding:4px 0 env(safe-area-inset-bottom)} nav button{flex:1;max-width:180px;border:0;padding:4px 1px;font-size:13px;color:var(--muted)} nav b{display:block;font-size:19px;line-height:1.2} nav [aria-current]{color:var(--accent);font-weight:700;background:var(--bg)} a{color:var(--accent)} progress{width:100%;accent-color:var(--accent)} details{margin:10px 0} summary{cursor:pointer} .feedback{border-left:4px solid var(--accent);padding:8px 12px;background:var(--bg);margin:10px 0}