/* Technical schematics: separate drawings preserve readable labels on narrow screens. */
.architecture-panel { min-width: 0; }
.diagram-mode-intro { display: flex; align-items: end; justify-content: space-between; gap: 30px; padding: 22px 0 8px; }
.diagram-mode-intro h3 { font-size: clamp(28px, 3vw, 42px); line-height: 1.08; }
.diagram-mode-intro p { font-size: 14px; color: var(--muted); max-width: 380px; }
.technical-figure { margin: 35px 0; border: 1px solid var(--line); border-radius: 6px; background: var(--paper); min-width: 0; overflow: hidden; }
.diagram-heading { display: flex; align-items: center; gap: 24px; padding: 23px 28px; border-bottom: 1px solid var(--line); }
.diagram-heading .mono { color: var(--muted); font-size: 10px; min-width: 95px; }
.diagram-heading h3 { font-size: clamp(24px, 2.5vw, 36px); line-height: 1.12; }
.schema-picture { display: block; padding: 22px 12px 4px; }
.schema-picture img { display: block; width: 100%; height: auto; }
.technical-figure figcaption { padding: 19px 28px 24px; color: #555550; font-size: 14px; line-height: 1.65; border-top: 1px solid var(--line); }
.diagram-source { padding: 0 28px; background: var(--panel); border-top: 1px solid var(--line); }
.diagram-source summary { font-family: "Courier New", monospace; font-size: 11px; letter-spacing: .02em; padding: 16px 0; min-height: 50px; align-items: center; }
.diagram-source p { color: #555550; max-width: 950px; font-size: 13px; padding-bottom: 14px; }
.diagram-source small { display: block; color: var(--muted); font-size: 11px; padding-bottom: 20px; }
.diagram-source summary::after { content: '+'; font-family: Arial, sans-serif; font-size: 20px; }
.diagram-source[open] summary::after { content: '−'; }
.boundaries-section > .technical-figure { margin-top: 50px; }
@media (max-width: 700px) {
  .diagram-mode-intro { align-items: start; flex-direction: column; gap: 18px; }
  .diagram-heading { align-items: start; flex-direction: column; gap: 12px; padding: 21px 19px; }
  .diagram-heading h3 { font-size: 28px; }
  .schema-picture { padding: 12px 0 0; }
  .technical-figure figcaption { padding: 18px 19px 22px; font-size: 13px; }
  .diagram-source { padding: 0 19px; }
  .diagram-source p { font-size: 12px; }
  .technical-figure { margin-top: 28px; }
}