:root { --blue: #0b5cab; --ink: #181818; --muted: #5c5c5c; --line: #e5e5e5; --bg: #f7f9fb; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.6 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--ink); background: #fff; }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 20px; }
header { border-bottom: 1px solid var(--line); background: #fff; }
header .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; gap: 10px; align-items: center; font-weight: 700; color: var(--ink); text-decoration: none; }
nav a { margin-left: 18px; color: var(--muted); text-decoration: none; }
nav a[aria-current="page"], nav a:hover { color: var(--blue); }
main { padding: 32px 20px 48px; }
h1 { font-size: 2.1rem; line-height: 1.2; margin: 0 0 12px; }
h2 { margin-top: 36px; font-size: 1.4rem; }
h3 { margin-top: 24px; font-size: 1.1rem; }
a { color: var(--blue); }
img { max-width: 100%; border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,.06); margin: 8px 0 16px; }
table { border-collapse: collapse; width: 100%; margin: 12px 0 20px; font-size: .95rem; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--bg); }
code { background: var(--bg); padding: 1px 5px; border-radius: 4px; font-size: .9em; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; padding: 18px 0; background: var(--bg); }