* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: #f7f8fa;
  color: #1f2933;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 16px;
}

h1 {
  font-size: 24px;
  margin: 0 0 4px;
}

.subtitle {
  color: #6b7280;
  margin: 0 0 24px;
}

section {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

h2 {
  font-size: 17px;
  margin: 0 0 12px;
}

form {
  display: grid;
  gap: 10px;
}

label {
  display: grid;
  gap: 4px;
  font-size: 14px;
}

input,
select,
button {
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid #d1d5db;
}

button {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
  cursor: pointer;
}

button:hover {
  background: #1d4ed8;
}

.output {
  margin-top: 12px;
  font-size: 14px;
}

.notice {
  color: #b45309;
}

.meta {
  color: #6b7280;
  font-size: 12px;
}

.status {
  white-space: pre-wrap;
  background: #111827;
  color: #e5e7eb;
  padding: 12px;
  border-radius: 8px;
  font-size: 12px;
}