*{box-sizing:border-box}html{font-size:16px;color:#252a3b;background:#f7f9f9}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang TC","Noto Sans TC",sans-serif;line-height:1.85}.shell{max-width:900px;margin:auto;padding:0 28px}header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:28px 0;border-bottom:1px solid #dce5e5}.brand{display:flex;align-items:center;gap:12px;font-size:24px;font-weight:700;text-decoration:none;color:#252a3b}.brand img{border-radius:12px}nav{display:flex;gap:8px}nav a{padding:8px 14px;border-radius:9px;font-size:15px;font-weight:600;text-decoration:none;color:#586872}nav a[aria-current]{background:#e4eeee;color:#355f63}main{background:white;margin:32px 0;padding:36px 44px;border:1px solid #e4eaea;border-radius:18px}h1{margin:0 0 22px;font-size:32px;line-height:1.4;letter-spacing:-.02em}h2{font-size:21px;line-height:1.5;margin:32px 0 10px;color:#355f63}p,li{font-size:17px;overflow-wrap:anywhere}p{margin:0 0 16px}ol{padding-left:24px}li{padding-left:4px;margin:8px 0}a{color:#355f63;text-underline-offset:4px}a:focus-visible{outline:3px solid #c58a5a;outline-offset:4px}footer{display:flex;justify-content:space-between;gap:20px;padding:0 0 36px;font-size:14px;color:#68757d}@media(max-width:600px){.shell{padding:0 18px}header{align-items:flex-start;flex-direction:column;gap:18px;padding:22px 0}nav{width:100%}nav a{flex:1;text-align:center}main{margin:24px 0;padding:26px 22px;border-radius:14px}h1{font-size:28px}h2{font-size:20px}p,li{font-size:17px}footer{flex-direction:column;gap:6px}}