:root {
  --text: #21201c;
  --muted: #63635e;
  --line: #dad9d6;
  --panel: #f9f9f8;
  --accent: #2f6f4f;
  --danger: #b42318;
  color-scheme: light;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font:
    16px/1.5 system-ui,
    sans-serif;
  color: var(--text);
  background: #fff;
}
.demo-banner {
  margin: 0;
  padding: 8px 16px;
  text-align: center;
  font-size: 0.875rem;
  background: #fff4d6;
  border-bottom: 1px solid #f0d78c;
}
header,
main,
footer {
  max-width: 880px;
  margin: 0 auto;
  padding: 16px;
}
header {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
a {
  color: var(--accent);
}
.brand {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
  text-decoration: none;
}
.hero {
  padding-block: 40px 24px;
}
h1 {
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  line-height: 1.15;
}
.lede {
  font-size: 1.15rem;
  color: var(--muted);
}
.button,
button {
  display: inline-block;
  padding: 10px 16px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  text-decoration: none;
  cursor: pointer;
}
.button-danger {
  background: var(--danger);
}
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.cards article,
fieldset,
.danger {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}
.cards h2 {
  margin-top: 0;
  font-size: 1.15rem;
}
.price {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0;
}
details {
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}
summary {
  cursor: pointer;
  font-weight: 600;
}
form {
  display: grid;
  gap: 16px;
  max-width: 560px;
}
label {
  display: grid;
  gap: 4px;
}
label.inline {
  display: flex;
  gap: 8px;
  align-items: center;
}
fieldset {
  display: grid;
  gap: 12px;
}
legend {
  font-weight: 600;
}
input,
select,
textarea {
  width: 100%;
  padding: 8px;
  font: inherit;
  border: 1px solid var(--line);
  border-radius: 6px;
}
label.inline input {
  width: auto;
}
.danger {
  margin-top: 32px;
  max-width: 560px;
  border-color: #f3c3be;
}
.danger h2 {
  margin-top: 0;
}
footer {
  color: var(--muted);
  font-size: 0.875rem;
  border-top: 1px solid var(--line);
  margin-top: 40px;
}