html.no-js body { opacity: 0; }
html.js-loaded body { opacity: 1; transition: opacity 0.3s ease; }

/* Critical path CSS */
body { margin: 0; padding: 0; min-height: 100vh; }
.nav-container { width: 100%; max-width: 1200px; margin: 0 auto; }
.logo { font-size: 1.5em; font-weight: bold; }
header { background-color: #f8f8f8; padding: 1rem 0; }