:root { color-scheme: light; font-family: system-ui, sans-serif; line-height: 1.55; }
body { margin: 0; background: #f6f8fb; color: #1a2332; }
.top { display: flex; justify-content: space-between; padding: 1rem 1.25rem; background: #fff; border-bottom: 1px solid #e2e8f0; }
.muted { color: #64748b; }
.wrap { max-width: 760px; margin: 0 auto; padding: 2.5rem 1.25rem; }
h1 { font-size: 1.85rem; margin: 0 0 0.75rem; }
.lead { color: #445066; }
.cards { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); margin: 2rem 0; }
article { background: #fff; border: 1px solid #e2e8f0; border-radius: 12px; padding: 1.25rem; }
article h2 { margin: 0 0 0.5rem; font-size: 1.1rem; }
article p { margin: 0 0 1rem; color: #475569; font-size: 0.95rem; }
.btn { display: inline-block; padding: 0.6rem 0.95rem; border-radius: 8px; text-decoration: none; font-weight: 600; }
.primary { background: #0b5fff; color: #fff; }
.secondary { background: #fff; color: #0b5fff; border: 1px solid #c9d4e6; }
.foot { font-size: 0.9rem; }
.foot a { color: #0b5fff; }
code { background: #f1f5f9; padding: 0.1rem 0.35rem; border-radius: 4px; font-size: 0.85em; }