:root {
  --bg: #ffffff; --fg: #141414; --muted: #5a5a5a; --line: #e4e4e4; --accent: #1f4e79; --accent-fg: #ffffff;
  --pass: #1b6e3a; --warn: #8a5a00; --block: #a32020; --code-bg: #f5f5f5;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1115; --fg: #e8e8e8; --muted: #a0a0a0; --line: #2a2d33; --accent: #7fb0e0; --accent-fg: #0f1115; --code-bg: #171a20; }
}
* { box-sizing: border-box; }
html { font-size: 17px; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; line-height: 1.55; color: var(--fg); background: var(--bg); }
a { color: var(--accent); }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 1.25rem; }
header { display: flex; align-items: baseline; justify-content: space-between; padding-top: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.wordmark { font-weight: 700; letter-spacing: 0.02em; text-decoration: none; color: var(--fg); font-size: 1.1rem; }
nav a { margin-left: 1.25rem; text-decoration: none; color: var(--muted); }
nav a:hover { color: var(--fg); }
h1 { font-size: 2rem; line-height: 1.2; margin: 2.5rem 0 1rem; }
h2 { font-size: 1.35rem; margin: 2.5rem 0 0.75rem; }
h3 { font-size: 1.05rem; margin: 1.5rem 0 0.5rem; }
p.lede { font-size: 1.15rem; color: var(--muted); }
.cta { display: inline-block; margin: 1rem 0 0; padding: 0.7rem 1.1rem; background: var(--accent); color: var(--accent-fg); border-radius: 6px; text-decoration: none; font-weight: 600; }
table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.95rem; }
th, td { text-align: left; padding: 0.55rem 0.5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
pre { background: var(--code-bg); padding: 1rem; overflow-x: auto; border-radius: 6px; font-size: 0.8rem; line-height: 1.45; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.pass { color: var(--pass); } .warn { color: var(--warn); } .block { color: var(--block); font-weight: 700; }
.note { border-left: 3px solid var(--line); padding-left: 1rem; color: var(--muted); }
.draft { background: #fff3cd; color: #5c4400; padding: 0.75rem 1rem; border-radius: 6px; font-size: 0.95rem; }
@media (prefers-color-scheme: dark) { .draft { background: #3a2f00; color: #ffe08a; } }
footer { margin-top: 4rem; padding-top: 1.5rem; padding-bottom: 3rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }
footer a { color: var(--muted); }
ul { padding-left: 1.2rem; }
li { margin: 0.3rem 0; }