:root { --ink: #1d2733; --muted: #5b6776; --line: #dde3ea; --brand: #0b6e4f; --bg: #ffffff; --soft: #f4f7f9; }
@media (prefers-color-scheme: dark) { :root { --ink: #e6ebf0; --muted: #a3afbd; --line: #2e3a47; --brand: #4cc79a; --bg: #11161c; --soft: #18202a; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif; }
header, main, footer { max-width: 820px; margin: 0 auto; padding: 0 20px; }
header { padding-top: 28px; display: flex; align-items: center; gap: 12px; }
header img { width: 40px; height: 40px; }
header a { color: inherit; text-decoration: none; font-weight: 700; }
nav { margin-left: auto; display: flex; gap: 16px; font-size: 15px; }
nav a { color: var(--muted); font-weight: 500; }
h1 { font-size: 30px; line-height: 1.25; margin: 28px 0 8px; }
h2 { font-size: 20px; margin: 30px 0 8px; }
p, li { color: var(--ink); }
.lede { color: var(--muted); font-size: 18px; margin-top: 0; }
a { color: var(--brand); }
code, kbd { font: 14px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: var(--soft); border: 1px solid var(--line); border-radius: 4px; padding: 1px 5px; }
.card { border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; margin: 14px 0; background: var(--soft); }
.card h2 { margin-top: 0; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
td, th { border-bottom: 1px solid var(--line); padding: 8px 6px; text-align: left; vertical-align: top; }
footer { margin-top: 48px; padding: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.toc { margin: 0 0 1.4rem; font-size: .93rem; }
.toc a { margin-right: .15rem; }