:root{font-family:system-ui,"Microsoft YaHei",sans-serif;color:#182925;background:#fff;letter-spacing:0}*{box-sizing:border-box}body{margin:0}header{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;padding:20px 24px;border-bottom:1px solid #dce4e1}header>a{font-weight:700;font-size:24px}nav{display:flex;gap:20px;flex-wrap:wrap}a{color:#146c55;text-underline-offset:4px}main{max-width:780px;margin:40px auto;padding:0 24px}h1{font-size:28px}h2{font-size:20px}form{display:grid;gap:12px;margin:28px 0}label{font-weight:600}select,textarea,button{font:inherit;border:1px solid #aebfb8;border-radius:6px;padding:12px;min-width:0;width:100%}textarea{resize:vertical}button{background:#176f58;color:white;cursor:pointer;min-height:48px}button:disabled{opacity:.55;cursor:default}section{border-top:1px solid #dce4e1;padding:24px 0;min-height:160px}p{line-height:1.8;overflow-wrap:anywhere;white-space:pre-wrap}footer{padding:20px 0}a:focus-visible,button:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #3f7ac9;outline-offset:3px}[hidden]{display:none!important}@media(max-width:480px){main{margin-top:24px}h1{font-size:24px}}
:root .model-option{display:flex;align-items:center;gap:10px;font-weight:600}.model-option input{width:18px;height:18px;margin:0;flex-shrink:0}