:root {
  --color-primary: #183b8f;
  --color-primary-contrast: #ffffff;
  --color-bg: #eef3f9;
  --color-surface: #ffffff;
  --color-text: #182235;
  --color-muted: #5f6f85;
  --color-accent: #d62f45;
  --color-border: #d7e0ec;
  --color-highlight: #ff00aa;
  --font-heading: Tahoma, Arial, sans-serif;
  --font-body: Georgia, "Times New Roman", serif;
  --radius: 0.75rem;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
}

a {
  color: var(--color-primary);
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--color-primary);
}

.prose-content p,
.prose-content li {
  line-height: 1.7;
}

.prose-content p {
  margin: 0 0 1.25rem;
}

.product-link {
  display: block;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  font-style: italic;
}

.retro-card {
  max-width: 18rem;
  margin: 1rem auto;
  padding: 0.8rem;
  border: 2px dashed var(--color-highlight);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: #222222;
  font-family: "Courier New", monospace;
  text-align: center;
  box-shadow: 0 0 10px #ff00aa33;
}

.retro-card h3 {
  margin: 0 0 0.5rem;
  color: var(--color-highlight);
  text-shadow: 1px 1px 1px #00ffcc;
}

.retro-card p {
  margin: 0.5rem 0;
  font-size: 0.78rem;
  line-height: 1.45;
}

.resource-section {
  margin-top: 2rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}

.resource-section h2,
.resource-section h3 {
  margin: 0;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 700;
}

.resource-section h2 {
  font-size: 1.5rem;
  font-style: italic;
}

.resource-section h3 {
  font-size: 1.05rem;
}

.resource-intro {
  margin: 0.5rem 0 1rem;
  color: var(--color-muted);
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: 0.85rem;
}

.resource-card {
  display: flex;
  min-height: 4.5rem;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  padding: 1rem;
  box-shadow: 0 0.25rem 0.8rem color-mix(in srgb, var(--color-text) 7%, transparent);
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.resource-card:hover,
.resource-card:focus-within {
  transform: translateY(-2px);
  box-shadow: 0 0.5rem 1.2rem color-mix(in srgb, var(--color-text) 12%, transparent);
}

.resource-card a {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  font-style: italic;
}

.resource-card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.resource-card--wide {
  grid-column: 1 / -1;
}

.resource-card--feature {
  align-items: flex-start;
  min-height: 7rem;
}

.resource-card--feature img {
  float: left;
  width: 90px;
  height: 112px;
  margin: 0 0.75rem 0.5rem 0;
}

.resource-card--notice a {
  font-size: 1.15rem;
}

.resource-card--plain {
  min-height: auto;
  box-shadow: none;
}

@media (max-width: 640px) {
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .resource-card--wide {
    grid-column: auto;
  }
}

.retro-card a {
  color: #00a7dd;
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 640px) {

  .prose-content p,
  .prose-content li {
    line-height: 1.6;
  }
}