body {
  background-image:
    repeating-linear-gradient(to right, rgba(0, 0, 0, 0.05) 0, rgba(0, 0, 0, 0.05) 1px, transparent 1px, transparent 5mm),
    repeating-linear-gradient(to bottom, rgba(0, 0, 0, 0.05) 0, rgba(0, 0, 0, 0.05) 1px, transparent 1px, transparent 5mm);
}

/* LP eyecatch (hero image) */
.eyecatch {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.eyecatch img {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* mermaid diagrams: bigger presentation */
.mermaid {
  text-align: center;
  margin: 2rem 0;
  overflow-x: auto;
}

.mermaid svg {
  width: 100%;
  max-width: 100%;
  height: auto;
  min-height: 420px;
}

.mermaid svg text {
  font-size: 1rem;
}