body{font-family:Arial,Helvetica,sans-serif;margin:0;background:#f5f5f5;color:#222}.container{max-width:1100px;margin:auto}.header{background:#fff;border-bottom:1px solid #ddd}.header-inner{display:flex;justify-content:space-between;padding:20px}nav a{margin-left:15px}.logo{font-weight:700;font-size:20px}.main{padding:30px;background:#fff;min-height:70vh}.footer{text-align:center;padding:20px;color:#777}