:root{--fg:#0f172a}body{font-family:system-ui;margin:0;color:var(--fg)}.container{max-width:960px;margin:0 auto;padding:0 20px}.nav{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid #e2e8f0}.section{padding:32px 0}.card{border:1px solid #e2e8f0;border-radius:12px;padding:16px;margin:8px 0}