:root{
  --blue:#0b3aa5;
  --blue2:#1b66ff;
  --bg:#f5f7fb;
  --text:#1a2a40;
  --muted:#5b6b83;
  --card:#ffffff;
  --border:rgba(11,19,32,.10);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Arial, Helvetica, sans-serif;
  background:linear-gradient(180deg,#f7f9fe 0%, #eef4ff 100%);
  color:var(--text);
}
.header{
  background:linear-gradient(135deg,var(--blue),var(--blue2));
  color:#fff;
  padding:18px 16px;
  text-align:center;
  font-weight:700;
  font-size:20px;
}
.wrap{
  max-width:1120px;
  margin:0 auto;
  padding:32px 16px 48px;
}
.card{
  max-width:620px;
  margin:0 auto;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:18px;
  box-shadow:0 14px 34px rgba(11,19,32,.08);
  padding:26px;
}
.plan-badge{
  display:inline-block;
  padding:8px 12px;
  border-radius:999px;
  background:rgba(27,102,255,.10);
  color:var(--blue);
  font-weight:800;
  font-size:13px;
  margin-bottom:12px;
}
h1{
  margin:0 0 8px;
  font-size:30px;
  text-align:center;
}
.subtitle{
  text-align:center;
  color:var(--muted);
  margin:0 0 22px;
  line-height:1.5;
}
.grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
}
.field{
  display:flex;
  flex-direction:column;
  gap:6px;
  margin-bottom:14px;
}
.field.full{grid-column:1 / -1;}
label{
  font-size:14px;
  font-weight:700;
}
input{
  width:100%;
  padding:12px 13px;
  border:1px solid #ccd5e3;
  border-radius:10px;
  font-size:15px;
  outline:none;
}
input:focus{
  border-color:#1b66ff;
  box-shadow:0 0 0 3px rgba(27,102,255,.10);
}
.plan-summary{
  margin:0 0 20px;
  padding:14px 16px;
  border-radius:14px;
  background:rgba(27,102,255,.06);
  border:1px solid rgba(27,102,255,.12);
}
.plan-summary strong{
  display:block;
  margin-bottom:4px;
}
.actions{
  display:flex;
  gap:12px;
  margin-top:10px;
}
.btn{
  flex:1;
  border:none;
  border-radius:12px;
  padding:14px 16px;
  font-size:16px;
  font-weight:800;
  cursor:pointer;
  text-decoration:none;
  text-align:center;
}
.btn-primary{
  background:linear-gradient(135deg,var(--blue),var(--blue2));
  color:white;
}
.btn-secondary{
  background:#fff;
  color:var(--blue);
  border:1px solid rgba(11,58,165,.18);
}
.note{
  margin-top:14px;
  font-size:13px;
  color:var(--muted);
  text-align:center;
}
.error{
  color:#b42318;
  font-size:13px;
  margin-top:6px;
}
@media (max-width:700px){
  .grid{grid-template-columns:1fr}
  .card{padding:20px}
  h1{font-size:26px}
  .actions{flex-direction:column}
}