*{margin:0;padding:0;box-sizing:border-box}
body{font-family:Arial,sans-serif}
.site-header{height:90px;border-bottom:1px solid #ddd;background:#fff}
.container{width:min(1200px,92%);margin:auto}
.header-wrap{display:flex;align-items:center;justify-content:space-between;height:90px}
.logo{height:60px;width:auto}
.main-nav{display:flex;gap:30px}
.main-nav a{text-decoration:none;color:#222;font-weight:600}
section{min-height:400px}