:root{--tc-blue:#1557b0;--tc-ink:#0c1116;--tc-muted:#6b7785;--tc-border:#e3e8ee;--tc-soft:#f6f8fb}
*{box-sizing:border-box}html,body{margin:0}
body{font:14px/1.5 -apple-system,"Segoe UI",Roboto,sans-serif;color:var(--tc-ink);padding:16px;background:#fff}
h1{font-size:20px;margin:0 0 4px;color:var(--tc-blue)}
h2{font-size:15px;margin:14px 0 6px;color:var(--tc-blue)}
.muted{color:var(--tc-muted)}.small{font-size:12px}
code{font-family:ui-monospace,Menlo,monospace;background:var(--tc-soft);padding:1px 5px;border:1px solid var(--tc-border);border-radius:4px}
pre.hex{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;line-height:1.65;background:#0c1116;color:#22d3ee;padding:14px;border-radius:8px;overflow:auto;border:1px solid var(--tc-border);white-space:pre;letter-spacing:.03em}
section.key{margin-top:14px;padding:12px;border:1px solid var(--tc-border);border-radius:8px;background:var(--tc-soft)}
section.key ul{margin:6px 0;padding-left:20px}
section.key table{width:100%;border-collapse:collapse;font-size:13px}
section.key th,section.key td{padding:4px 8px;text-align:left;border-bottom:1px solid var(--tc-border)}
section.key th{font-weight:600;color:var(--tc-blue)}