:root{--nav:#14282f;--bg:#f3f6f8;--text:#1b3038;--muted:#607680;--line:#dce5e9;--primary:#087f83;--danger:#b12e40}*{box-sizing:border-box}body{margin:0;background:var(--bg);font-family:Inter,"Microsoft YaHei UI",sans-serif;color:var(--text);font-size:14px;line-height:1.6}[hidden]{display:none!important}button,input,select,textarea{font:inherit}button{cursor:pointer;border:1px solid transparent;border-radius:8px;padding:10px 15px;font-weight:600;transition:background .15s}button:disabled{opacity:.5;cursor:not-allowed}:focus-visible{outline:3px solid 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