:root{--bg:#0a1220;--ink:#eef2ff;--accent:#4da3ff}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--ink)}
.header,.footer{padding:16px;background:#0f1b3a}
.header nav a{margin-right:12px;color:var(--accent);text-decoration:none}
.container{padding:24px;max-width:960px;margin:auto}
.btn{padding:12px 18px;background:var(--accent);border:none;border-radius:8px}
label{display:block;margin-bottom:12px}
input,select,textarea{width:100%;padding:10px;margin-top:6px}
.note{margin-top:10px}