* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f7fb;
  color: #1f2937;
}
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.panel {
  background: white;
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}
h1, h2 { margin-top: 0; }
.intro {
  color: #4b5563;
  line-height: 1.5;
  margin-bottom: 20px;
}
.field { margin-bottom: 16px; }
label {
  display: block;
  font-weight: bold;
  margin-bottom: 6px;
}
select {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid #cbd5e1;
  background: white;
  font-size: 16px;
}
.info-box {
  margin-top: 20px;
  padding: 16px;
  border-radius: 14px;
  background: #eef2ff;
  line-height: 1.7;
  word-break: break-word;
}
.qr-panel { display: flex; flex-direction: column; }
.qr-card {
  min-height: 420px;
  border: 1px solid #e5e7eb;
  border-radius: 18px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 18px;
}
#qrcode {
  background: white;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid #e5e7eb;
}
.qr-meta { text-align: center; }
.qr-title {
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 8px;
}
.qr-subtitle { color: #4b5563; }
@media (max-width: 640px) {
  .container { padding: 16px; }
  .panel { padding: 18px; }
}