* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: #f7f7f7;
  color: #111;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.hero {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  align-items: center;
  margin-bottom: 32px;
}

.eyebrow {
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #555;
  margin: 0 0 12px;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  margin: 0 0 10px;
}

.sub {
  color: #555;
  font-size: 1.1rem;
  margin: 0;
}

.api-box {
  background: #fff;
  padding: 18px;
  border-radius: 14px;
  border: 1px solid #ddd;
  display: grid;
  gap: 10px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.06);
}

.api-box input {
  border: 1px solid #ccc;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 1rem;
}

.api-box button {
  width: fit-content;
}

.hint {
  font-size: 0.85rem;
  color: #555;
}

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: #fff;
  border-radius: 16px;
  padding: 16px;
  border: 1px solid #ddd;
  display: grid;
  gap: 10px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.06);
}

.card h2 {
  margin: 0;
  font-size: 1.15rem;
}

.helper {
  margin: 0;
  color: #555;
  font-size: 0.95rem;
}

.form {
  display: grid;
  gap: 8px;
}

.form label {
  font-size: 0.9rem;
  color: #333;
}

.form input,
.form select {
  border: 1px solid #ccc;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 1rem;
}

.checks {
  display: grid;
  gap: 6px;
}

.checks label {
  display: flex;
  gap: 8px;
  align-items: center;
}

.row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

textarea {
  width: 100%;
  border-radius: 12px;
  border: 1px solid #ccc;
  padding: 10px;
  font-family: "Courier New", Courier, monospace;
  font-size: 0.9rem;
  background: #fff;
}

button {
  background: #f2f2f2;
  border: 1px solid #cfcfcf;
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.04s ease, background 0.15s ease, border-color 0.15s ease;
}

button:hover {
  background: #ededed;
}

button:active {
  transform: translateY(1px);
}

button.primary {
  background: #111;
  border-color: #111;
  color: #fff;
}

button.primary:hover {
  background: #1a1a1a;
}

button.danger {
  background: #c62828;
  border-color: #c62828;
  color: #fff;
}

button.danger:hover {
  background: #b71c1c;
}

input:focus,
select:focus,
textarea:focus,
button:focus {
  outline: 2px solid #111;
  outline-offset: 2px;
}

pre {
  background: #f7f7f7;
  border-radius: 10px;
  padding: 10px;
  margin: 0;
  font-size: 0.85rem;
  color: #2f2f2f;
  overflow-x: auto;
  min-height: 60px;
}