:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #111318;
  color: #f4f6fb;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #111318;
}

main {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0;
}

header {
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: #87d37c;
  font-size: 13px;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 32px;
  letter-spacing: 0;
}

#marker {
  color: #b8c0cc;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

article {
  border: 1px solid #2b313b;
  border-radius: 8px;
  background: #181b22;
  padding: 16px;
  min-height: 220px;
}

h2 {
  margin: 0 0 12px;
  font-size: 18px;
  letter-spacing: 0;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  color: #d8dde8;
  font-size: 13px;
  line-height: 1.5;
}

button {
  margin-top: 18px;
  border: 1px solid #3d4654;
  border-radius: 8px;
  background: #eef2f8;
  color: #111318;
  font-weight: 700;
  padding: 10px 14px;
  cursor: pointer;
}

@media (max-width: 760px) {
  .grid {
    grid-template-columns: 1fr;
  }
}