:root{--bg:#f6f8fb;--paper:#fff;--ink:#202a3b;--muted:#637087;--line:#dbe2ec;--accent:#3157d5;--soft:#eaf0ff;--error:#a52727;--warning:#fff4db;color-scheme:light}*{box-sizing:border-box}body{margin:0;font:16px/1.6 Arial,Helvetica,sans-serif;color:var(--ink);background:var(--bg)}html{scroll-behavior:smooth;scroll-padding-top:20px}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button,input,textarea,select{font:inherit}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid 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