:root { --bg: #ffffff; --fg: #1d1d1f; --muted: #6e6e73; --accent: #2b5fd9; --line: #e5e5ea; }
@media (prefers-color-scheme: dark) { :root { --bg: #111113; --fg: #f2f2f7; --muted: #a1a1a6; --accent: #7aa2ff; --line: #2c2c2e; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header { display: flex; align-items: center; gap: 12px; padding-top: 28px; padding-bottom: 8px; }
header img { width: 36px; height: 36px; border-radius: 8px; }
header a { color: var(--fg); text-decoration: none; font-weight: 650; font-size: 20px; }
nav { margin-left: auto; display: flex; gap: 16px; flex-wrap: wrap; font-size: 15px; }
nav a { color: var(--muted); font-weight: 400; font-size: 15px; }
h1 { font-size: 34px; line-height: 1.2; margin: 32px 0 12px; }
h2 { font-size: 21px; margin: 32px 0 8px; }
p, li { color: var(--fg); }
.lead { font-size: 20px; color: var(--muted); }
a { color: var(--accent); }
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; }
dl { display: grid; grid-template-columns: minmax(140px, max-content) 1fr; gap: 6px 16px; }
dt { color: var(--muted); }
dd { margin: 0; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; margin: 24px 0; }
.features div { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.features b { display: block; margin-bottom: 4px; }
footer { margin-top: 56px; padding-top: 16px; padding-bottom: 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; display: flex; gap: 16px; flex-wrap: wrap; }
footer a { color: var(--muted); }
@media (max-width: 520px) { header { flex-wrap: wrap; } nav { margin-left: 0; width: 100%; gap: 14px; } dl { grid-template-columns: 1fr; } dt { margin-top: 8px; } h1 { font-size: 28px; } }