:root{
  --bg:#0f1720;
  --card:#0b1220;
  --text:#e6eef8;
  --muted:#9fb0c9;
  --accent:#5eead4;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;background:var(--bg);font-family:Inter, system-ui, -apple-system, 'Segoe UI', Roboto, Arial;color:var(--text)}
main.card{max-width:520px;margin:8vh auto;padding:28px;border-radius:12px;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));box-shadow:0 6px 30px rgba(2,6,23,0.6);text-align:center}
.logo{width:84px;height:84px;border-radius:12px;margin-bottom:12px}
h1{margin:6px 0 8px;font-size:20px}
p{margin:10px 0;color:var(--muted)}
.small{font-size:13px}
.muted{color:var(--muted)}
.actions{margin-top:16px}
.btn{display:inline-block;padding:10px 16px;border-radius:10px;text-decoration:none;font-weight:600;background:var(--accent);color:#032;box-shadow:0 6px 18px rgba(94,234,212,0.12)}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,0.04);color:var(--text)}
code{background:rgba(255,255,255,0.03);padding:2px 6px;border-radius:6px}