:root { --max: 900px; }
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, Arial, sans-serif; line-height: 1.5; }
header, main, footer { width: min(var(--max), 92vw); margin: 0 auto; }
header { padding: 28px 0 10px; border-bottom: 1px solid #e5e5e5; }
nav a { margin-right: 14px; text-decoration: none; }
nav a:hover { text-decoration: underline; }
main { padding: 22px 0; }
section { padding: 18px 0; border-bottom: 1px solid #f0f0f0; }
h1 { margin: 0 0 6px; font-size: 28px; }
h2 { margin: 0 0 8px; font-size: 20px; }
.muted { color: #555; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card { border: 1px solid #eee; border-radius: 12px; padding: 12px; }
.tag { display:inline-block; font-size: 12px; padding: 2px 8px; border: 1px solid #eee; border-radius: 999px; margin-right: 6px; }
footer { padding: 18px 0 30px; }