* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 16px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #ecfdf5; color: #064e3b;
}
.card {
  width: 100%; max-width: 420px; text-align: center; padding: 32px 28px;
  background: #fff; border: 2px solid #a7f3d0; border-radius: 20px;
}
.card img { border-radius: 22px; }
h1 { margin: 12px 0 4px; font-size: 1.6rem; }
.lead { margin: 0 0 24px; color: #374151; font-size: 1.05rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  background: #047857; color: #fff; text-decoration: none; font-weight: 700;
  padding: 16px 20px; border-radius: 14px; width: 100%; font-size: 1.1rem;
}
.btn:hover { background: #065f46; }
.btn svg { background: #fff; border-radius: 50%; padding: 2px; }
.btn svg { width: 22px; height: 22px; }
.error { margin: 16px 0 0; padding: 10px 12px; border-radius: 8px; background: #fee2e2; color: #7f1d1d; font-size: .9rem; }
.error[hidden] { display: none; }
.note { margin: 20px 0 0; color: #374151; font-size: .9rem; line-height: 1.5; }
.note a { color: #1d4ed8; }