:root { color-scheme: light; --ink: #1d2230; --muted: #5b6474; --line: #e3e6ee; --accent: #1f7a5a; --paper: #f7f8fb; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.75 -apple-system, "Segoe UI", "Malgun Gothic", "Apple SD Gothic Neo", sans-serif; word-break: keep-all; }
header.top { border-bottom: 1px solid var(--line); background: #fff; }
header.top .in { max-width: 820px; margin: 0 auto; padding: 14px 22px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.brand { font-weight: 800; font-size: 18px; color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 8px; }
.brand img { width: 28px; height: 28px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 14px; font-size: 15px; }
nav a:hover, nav a.on { color: var(--accent); }
main { max-width: 820px; margin: 0 auto; padding: 36px 22px 64px; }
h1 { font-size: 30px; line-height: 1.35; margin: 0 0 10px; }
h1 small { font-size: 17px; color: var(--muted); font-weight: 600; margin-left: 6px; }
h2 { font-size: 20px; margin: 34px 0 8px; }
h3 { font-size: 17px; margin: 22px 0 6px; }
.lead { font-size: 18px; color: #374151; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 18px 22px; margin: 18px 0; }
.muted { color: var(--muted); font-size: 14px; }
a { color: #1d5fd6; }
code { background: #eef0f5; padding: 1px 6px; border-radius: 4px; font-size: 13.5px; word-break: break-all; }
ul, ol { padding-left: 22px; }
li { margin: 3px 0; }
table { border-collapse: collapse; width: 100%; font-size: 15px; background: #fff; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: #f0f2f7; }
hr { border: 0; border-top: 1px solid var(--line); margin: 44px 0 24px; }
.en { color: #2f3747; }
.lang { font-size: 14px; color: var(--muted); }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer .in { max-width: 820px; margin: 0 auto; padding: 18px 22px 40px; }
footer a { color: var(--muted); margin-right: 12px; }
@media (max-width: 560px) { h1 { font-size: 25px; } nav a { margin-left: 10px; } main { padding-top: 26px; } }