:root{color-scheme:dark}
html,body{height:100%}
body{margin:0;background:#0b1020;color:#e5e7eb;font:400 16px/1.5 system-ui,-apple-system,Segoe UI,Roboto}
.top{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#121a34;border-bottom:1px solid #1f2a52}
.top nav a{color:#93c5fd;margin-right:12px;text-decoration:none}
.hero{max-width:1100px;margin:0 auto;padding:16px}
.frame-wrap{aspect-ratio:16/9;border:1px solid #1f2a52;border-radius:12px;overflow:hidden;background:#0b1020}
.frame-wrap iframe{width:100%;height:100%;display:block;border:0}