@font-face{font-family:"Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(/static/plexmono-400-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(/static/plexmono-400-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Plex Mono";font-style:normal;font-weight:600;font-display:swap;src:url(/static/plexmono-600-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Plex Mono";font-style:normal;font-weight:600;font-display:swap;src:url(/static/plexmono-600-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{--bg:#F7F6F2;--ink:#1A1A1A;--dim:#76746C;--rule:#A8A59C;--link:#0031DB}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.7 "Plex Mono",ui-monospace,"SF Mono",Menlo,monospace;-webkit-text-size-adjust:100%}
.page{max-width:620px;margin:0 auto;padding:40px 20px 64px}
a{color:var(--link);text-underline-offset:2px}a:hover{background:var(--link);color:var(--bg);text-decoration:none}
:focus-visible{outline:2px solid var(--link);outline-offset:2px}
.testbar{color:var(--dim);margin:0 0 24px}
.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:48px}.brand img{display:block;height:18px;width:auto}.brand:hover{background:none}
h1,h2{font-size:15px;line-height:1.7;margin:0 0 4px}h1{font-weight:600}h2{font-weight:400;color:var(--dim);margin-bottom:12px}
p{margin:0 0 18px}
hr{border:0;border-top:1px dashed var(--rule);margin:32px 0}
.steps{margin:0 0 4px;padding-left:24px}.steps li{margin-bottom:4px}
.fp{color:var(--dim);font-size:13px;word-break:break-all}
.rows{width:100%;border-collapse:collapse;margin-bottom:14px;font-variant-numeric:tabular-nums}
.rows td{padding:2px 0;vertical-align:top}.rows td+td{text-align:right;padding-left:16px;white-space:nowrap}
.dim{color:var(--dim);font-size:14px}
.foot{color:var(--dim);font-size:13px}.foot p{margin:0 0 6px}
form label{display:block;margin:18px 0}
select{display:block;width:100%;margin-top:6px;padding:8px;font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--ink);border-radius:0}
label.check{display:flex;gap:10px;align-items:flex-start}label.check input{margin-top:6px;accent-color:var(--link)}
button{font:inherit;font-weight:600;color:var(--bg);background:var(--ink);border:1px solid var(--ink);border-radius:0;padding:8px 16px;cursor:pointer}
button:hover{background:var(--link);border-color:var(--link)}
.problem{color:#B3261E}
.code{font-size:22px;font-weight:600;letter-spacing:2px;border:1px dashed var(--ink);padding:14px;text-align:center;margin:18px 0}
.prose h1{margin-bottom:16px}
@media (prefers-color-scheme:dark){:root{--bg:#121211;--ink:#E6E3DA;--dim:#9A978E;--rule:#55534D;--link:#8FA6FF}.brand img{filter:brightness(0) invert(.9)}}