*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 2rem 1.25rem 3rem;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.45;
  color: #111;
  background: #fff;
}

.page {
  max-width: 52rem;
  margin: 0 auto;
}

.page--wide {
  max-width: 56rem;
}

.page-header {
  background: #d9d9d9;
  padding: 0.85rem 1.25rem;
  margin-bottom: 1.75rem;
  text-align: center;
}

.page-header h1 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  color: #000;
}

.article-list {
  margin: 0;
  padding-left: 1.75rem;
}

.article-list li {
  margin-bottom: 0.65rem;
}

.article-list a {
  color: #111;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-list a:hover {
  color: #0d4f4f;
}

.all-section {
  margin-bottom: 2rem;
}

.section-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  padding: 0.5rem 0.75rem;
  background: #ececec;
}

.intro {
  margin: 0 0 1rem;
  color: #333;
}

.dev-links {
  line-height: 1.6;
}

.dev-links code {
  font-size: 0.9em;
  word-break: break-all;
}