body{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;max-width:760px;margin:2rem auto;padding:0 1rem;line-height:1.6;color:#1d2433}
header{display:flex;align-items:center;gap:.8rem}header img{width:48px;height:48px;border-radius:10px}
nav a{margin-right:1rem}h1{margin:.2rem 0}.zh{color:#555}footer{margin-top:3rem;font-size:.9rem;color:#666;border-top:1px solid #ddd;padding-top:1rem}