:root { --bg: #F3F4F6; --card: #FFFFFF; --text: #111827; --muted: #4B5563; --ink: #15803D; --border: #E5E7EB; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #0A140D; --card: #13261A; --text: #F3F4F6; --muted: #CBD5E1; --ink: #4ADE80; --border: #1F3A27; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
header img { width: 48px; height: 48px; border-radius: 12px; }
header a { color: inherit; text-decoration: none; font-weight: 800; font-size: 20px; }
nav.lang { margin-left: auto; font-size: 14px; }
nav.lang a { color: var(--muted); margin-left: 12px; }
section { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; margin-bottom: 24px; }
h1 { font-size: 28px; line-height: 1.25; margin: 0 0 8px; }
h2 { font-size: 19px; margin: 28px 0 8px; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 14px; }
a { color: var(--ink); }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 8px; border-top: 1px solid var(--border); }
.wide { overflow-x: auto; }