:root{--bg:#f7f6f2;--ink:#232323;--ink2:#4b4b4b;--muted:#7c7a75;--line:#e4e1da;--accent:#b8412a}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,"PingFang HK","PingFang TC","Noto Sans TC",system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;font-size:16px}
main{max-width:720px;margin:0 auto;padding:32px 22px 60px}h1{font-size:26px;margin:0 0 4px}h2{font-size:18px;margin:28px 0 8px}p,li{color:var(--ink2)}
.sub{color:var(--muted);font-size:14px;margin:0 0 20px}a{color:var(--accent)}nav{font-size:14px;margin-bottom:24px}nav a{margin-right:14px;color:var(--ink2)}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin:14px 0}
.btn{display:inline-block;background:var(--ink);color:#fff;padding:12px 20px;border-radius:12px;text-decoration:none;font-weight:600}
footer{max-width:720px;margin:0 auto;padding:0 22px 40px;font-size:12.5px;color:var(--muted)}