* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  background: #f6f8fb;
  color: #202b3c;
}

.container {
  width: min(1024px, 95vw);
  margin: 2rem auto;
  display: grid;
  gap: 1rem;
}

.hero h1 {
  margin: 0;
}

.hero p {
  margin: 0.5rem 0 0;
  color: #42526b;
}

.hint {
  color: #42526b;
  margin-top: 0;
}

.card {
  background: #fff;
  border: 1px solid #dbe3ef;
  border-radius: 10px;
  padding: 1rem;
}

.card h2 {
  margin-top: 0;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: end;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.9rem;
  min-width: 220px;
}

input,
select,
textarea,
button {
  font: inherit;
}

input,
select,
textarea {
  border: 1px solid #c4cfdf;
  border-radius: 8px;
  padding: 0.6rem;
  background: #fff;
}

textarea {
  width: 100%;
  min-height: 90px;
}

button {
  border: 0;
  border-radius: 8px;
  padding: 0.6rem 1rem;
  background: #0057d8;
  color: #fff;
  cursor: pointer;
}

button:hover {
  background: #0046ad;
}

pre {
  background: #0f1725;
  color: #d7e0ef;
  padding: 0.8rem;
  border-radius: 8px;
  overflow: auto;
  min-height: 72px;
}

details summary {
  cursor: pointer;
  font-weight: 600;
  margin-bottom: 0.75rem;
}