:root { color-scheme: light dark; --text: #1d1d1f; --muted: #6e6e73; --line: #e5e5ea; --bg: #ffffff; --accent: #2f6f4f; }
@media (prefers-color-scheme: dark) { :root { --text: #f2f2f7; --muted: #a1a1a6; --line: #2c2c2e; --bg: #111113; --accent: #7cc29b; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 64px 24px 40px; }
h1 { font-size: 40px; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.02em; }
h2 { font-size: 22px; margin: 40px 0 8px; }
h3 { font-size: 17px; margin: 28px 0 4px; }
p, li { margin: 8px 0; }
.lead { font-size: 19px; color: var(--muted); margin-bottom: 32px; }
.zh { color: var(--muted); }
section + section { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 8px; }
a { color: var(--accent); }
footer { max-width: 760px; margin: 0 auto; padding: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; display: flex; gap: 20px; flex-wrap: wrap; }
.updated { color: var(--muted); font-size: 14px; }