:root{--ink:#202c38;--muted:#5f6b78;--paper:#fff;--canvas:#f4f6f8;--line:#d8dfe7;--blue:#285b89;--tint:#eaf1f8;--alert:#963524}*{box-sizing:border-box}body{color:var(--ink);background:var(--canvas);margin:0;font-family:Arial,Helvetica,sans-serif;font-size:14px;line-height:1.5}button,input,textarea,select{font:inherit}button,.file-button{color:var(--ink);cursor:pointer;background:#fff;border:1px solid #acb9c6;border-radius:5px;padding:8px 12px;font-weight:600}button:hover,.file-button:hover{background:var(--tint)}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline-offset:3px;outline:3px solid #327ebb}a{color:var(--blue);text-underline-offset:3px}h1,h2,h3,p{margin:0 0 12px}h1{letter-spacing:-.6px;font-size:28px;line-height:1.2}h2{font-size:18px;line-height:1.3}h3{font-size:15px}small,.hint{color:var(--muted);font-size:12px}.topbar{background:var(--paper);border-bottom:1px solid 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