body{margin:0;font-family:system-ui,Arial,sans-serif;color:#233953;background:#f6f9fd;line-height:1.55}main{max-width:850px;margin:auto;background:white;padding:32px;min-height:100vh}a{color:#1261bf}nav{padding:13px;background:#eaf3ff;border-radius:8px}.card{padding:10px 15px;border:1px solid #d7e3f1;border-radius:8px;margin:12px 0}h1{font-size:30px}small{color:#637589}footer{font-size:12px;margin-top:32px;border-top:1px solid #d7e3f1;padding-top:14px}@media(max-width:600px){main{padding:18px}}