:root{--bg:#0b1020;--muted:#a1a1aa }body{margin:0;font-family:Inter,system-ui,Arial,Helvetica,sans-serif;background:var(--bg);color:#fff}.app-header{display:flex;align-items:center;gap:16;padding:12px 20px;background:#071024}.app-header .brand{font-weight:700}.app-header nav a{color:#9aa6b2;margin-right:12px;text-decoration:none}.app-main{padding:24px}.toast{position:fixed;right:20px;bottom:20px;background:#222;padding:12px 16px;border-radius:8px}