body{font-family:system-ui,Arial,sans-serif;max-width:860px;margin:0 auto;padding:16px;color:#222;line-height:1.5}header a{font-weight:bold;text-decoration:none;color:#123}nav a{margin-right:12px}.note{background:#fff7e0;border:1px solid #e8c766;padding:8px 12px;font-size:14px}table{border-collapse:collapse;width:100%}td,th{border-bottom:1px solid #ddd;padding:6px;text-align:left}input,select,button{font-size:16px;padding:8px}footer{margin-top:40px;font-size:13px;color:#555}