: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:14px;margin:14px 0 4px;color:var(--tc-blue);font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.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}
section.zone pre{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;line-height:1.55;background:#0c1116;color:#cfe1ff;padding:12px;border-radius:8px;overflow:auto;border:1px solid var(--tc-border);white-space:pre;margin:6px 0 14px}
footer{margin-top:14px}