:root { color-scheme: light; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #1f2937; background: #f0f2f5; line-height: 1.75; }
body { margin: 0; }
main { box-sizing: border-box; max-width: 900px; margin: 32px auto; padding: 32px; background: #fff; border: 1px solid #eef0f3; border-radius: 8px; }
header { margin-bottom: 32px; }
header p, footer { color: #606266; }
nav { display: flex; flex-wrap: wrap; gap: 12px 24px; }
a { color: #1264d8; text-underline-offset: 3px; overflow-wrap: anywhere; }
a:hover { color: #105bbe; }
nav a { min-height: 44px; display: inline-flex; align-items: center; }
.site-brand { display: inline-flex; align-items: center; gap: 12px; color: #1f2937; text-decoration: none; font-size: 24px; font-weight: 700; min-height: 44px; }
.site-brand img { object-fit: contain; }
a:focus-visible { outline: 2px solid #1677ff; outline-offset: 4px; }
h1 { font-size: 28px; line-height: 1.35; margin: 12px 0; }
h2 { font-size: 20px; margin: 28px 0 12px; }
h3 { font-size: 16px; margin: 20px 0 8px; }
p, ul, ol { margin: 12px 0; }
li { margin: 8px 0; }
section { scroll-margin-top: 24px; }
.action { display: inline-block; padding: 10px 16px; border-radius: 6px; background: #1264d8; color: #fff; text-decoration: none; }
.action:hover { background: #105bbe; color: #fff; }
footer { margin-top: 32px; font-size: 14px; }
@media (max-width: 600px) { main { margin: 0; border: 0; border-radius: 0; padding: 24px 20px; } h1 { font-size: 24px; } }