:root{--fg:#111;--bg:#fff;--muted:#666;--link:#0645ad}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,sans-serif;color:var(--fg);background:var(--bg)}
header{padding:16px;border-bottom:1px solid #eee;display:flex;justify-content:space-between;align-items:center}
header h1{margin:0;font-size:20px}nav a{color:var(--link);text-decoration:none;margin-left:12px}
main{max-width:820px;margin:24px auto;padding:0 16px}
ul{list-style:none;padding:0;margin:0}li{padding:12px 0;border-bottom:1px solid #eee}
small{color:var(--muted)}input#q{width:100%;padding:10px;border:1px solid #ddd;border-radius:6px;margin:12px 0}
a{color:var(--link)}