:root{font-family:system-ui,-apple-system,"Noto Sans TC",sans-serif;color:#142838;background:#f4f7fa;line-height:1.75}*{box-sizing:border-box}body{margin:0}header,main,footer{max-width:820px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;gap:20px;align-items:center}header a{font-weight:650;text-decoration:none}main{background:#fff;border:1px solid #dbe4ed;border-radius:16px;margin:0 auto 24px;padding:32px}h1{font-size:2rem;line-height:1.2}h2{font-size:1.2rem;margin-top:28px}a{color:#075da8;text-underline-offset:3px}a:focus-visible{outline:3px solid #f19b24;outline-offset:4px}nav{display:flex;flex-wrap:wrap;gap:16px}footer{font-size:.9rem}p{overflow-wrap:anywhere}@media(max-width:600px){header,main,footer{padding:20px}main{border-radius:0;border-left:0;border-right:0}h1{font-size:1.65rem}}