/* Public control model. Static diagrams keep requests, evidence and effects distinct. */
.architecture-opening { padding-top: clamp(2rem, 4vw, 4rem); }
.architecture-breadcrumb { display: flex; align-items: center; gap: 0.7rem; margin-bottom: 2rem; color: var(--ink-muted); font-size: var(--font-small); }
.architecture-breadcrumb a { color: var(--ink-muted); text-underline-offset: 0.25em; }
.architecture-title-row { display: grid; grid-template-columns: 1.45fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: end; }
.architecture-title-row h1 { margin: 0; font-size: clamp(2.625rem, 4.75vw, 4.5rem); line-height: 1.03; letter-spacing: -0.05em; font-weight: 550; }
.architecture-title-row .lead { max-width: 25rem; margin-bottom: 0.75rem; }
.architecture-intro { max-width: 25rem; margin: 0; color: var(--ink-muted); font-size: var(--font-small); }
.architecture-availability { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 1rem; margin: 2rem 0 3.5rem; color: var(--ink-muted); font-size: var(--font-small); }
.architecture-reference-label { padding-left: 0.75rem; border-left: 2px solid var(--institutional); color: var(--ink-strong); font-weight: 600; }
.architecture-boundary { margin: 0; padding: 2rem 0 0; border-top: 1px solid var(--rule-strong); }
.architecture-boundary figcaption { display: grid; grid-template-columns: 1fr auto; gap: 0.4rem 2rem; align-items: center; }
.architecture-boundary figcaption .eyebrow { grid-column: 1 / -1; margin: 0 0 0.5rem; }
.architecture-boundary figcaption > strong { font-size: clamp(1.35rem, 2.3vw, 1.875rem); font-weight: 550; letter-spacing: -0.025em; }
.architecture-obligation { display: flex; flex-wrap: wrap; gap: 0.35rem 1.25rem; align-items: center; font-size: var(--font-small); color: var(--ink-muted); }
.architecture-obligation > span:first-child { color: var(--ink-strong); font-family: var(--font-mono); font-size: 1.0625rem; }
.architecture-stage { display: grid; grid-template-columns: minmax(0, 1fr) 4rem minmax(0, 1.2fr) 3.5rem minmax(0, 0.9fr); grid-template-rows: auto auto; row-gap: 2.5rem; align-items: center; padding: 2.75rem 0 2rem; }
.architecture-source { padding: 0.5rem 0; }
.architecture-original { grid-area: 1 / 1; }
.architecture-proposal { grid-area: 2 / 1; }
.architecture-node-label { display: block; margin: 0 0 0.75rem; font-size: var(--font-meta); color: var(--ink-muted); line-height: 1.5; }
.architecture-source h2, .architecture-gate h2, .architecture-destination h2 { margin: 0 0 1rem; font-size: clamp(1.1875rem, 1.8vw, 1.5rem); line-height: 1.18; letter-spacing: -0.025em; font-weight: 550; }
.architecture-source p, .architecture-destination p { margin: 0.65rem 0 0; font-size: var(--font-small); color: var(--ink-muted); }
.architecture-source .state-badge { font-size: var(--font-meta); }
.architecture-flow { align-self: center; display: flex; flex-direction: column; gap: 0.65rem; padding-inline: 0.4rem; color: var(--ink-muted); }
.architecture-flow span { font-size: var(--font-meta); text-align: center; }
.architecture-flow i { display: block; position: relative; border-top: 1.5px solid var(--ink-muted); width: 100%; }
.architecture-flow i::after { content: ""; position: absolute; width: 0.45rem; height: 0.45rem; right: 1px; top: -4px; border-top: 1.5px solid var(--ink-muted); border-right: 1.5px solid var(--ink-muted); transform: rotate(45deg); }
.architecture-flow--evidence { grid-area: 1 / 2; }
.architecture-flow--evidence i { border-top-style: dashed; }
.architecture-flow--request { grid-area: 2 / 2; }
.architecture-gate { grid-area: 1 / 3 / 3 / 4; padding: 1.75rem; border: 1px solid var(--rule-soft); border-top: 3px solid var(--institutional); background: var(--surface); }
.architecture-gate > .architecture-node-label { color: var(--institutional); }
.architecture-gate h2 { font-size: clamp(1.5rem, 2.3vw, 1.875rem); }
.architecture-gate dl { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1.75rem 0; }
.architecture-gate dt { margin-bottom: 0.25rem; color: var(--ink-muted); font-size: var(--font-meta); }
.architecture-gate dd { margin: 0; font-family: var(--font-mono); font-size: clamp(1.125rem, 1.8vw, 1.5rem); letter-spacing: -0.055em; }
.architecture-gate-decision { padding-top: 1.25rem; border-top: 1px solid var(--rule-soft); }
.architecture-gate-decision p { margin: 0.65rem 0 0; font-size: var(--font-small); }
.architecture-stop { grid-area: 1 / 4 / 3 / 5; padding-left: 0.35rem; }
.architecture-stop i { display: block; position: relative; width: 62%; border-top: 2px solid var(--hold-border); }
.architecture-stop i::after { content: ""; position: absolute; right: 0; top: -0.6rem; height: 1.1rem; border-right: 2px solid var(--hold-border); }
.architecture-destination { grid-area: 1 / 5 / 3 / 6; padding: 1.5rem 0 1.5rem 1rem; border-left: 1px dashed var(--rule-strong); }
.architecture-diagram-note { margin: 1.25rem 0 0; color: var(--ink-muted); font-size: var(--font-meta); }
.architecture-scope-note { max-width: 48rem; margin: 1.5rem 0 0; padding-left: 1rem; border-left: 2px solid var(--rule-strong); color: var(--ink-muted); font-size: var(--font-small); }
.architecture-decisions-section { background: var(--canvas-secondary); }
.architecture-section-heading { max-width: 45rem; margin-bottom: 2.75rem; }
.architecture-section-heading h2 { margin-bottom: 1rem; font-size: clamp(2rem, 3.2vw, 3rem); line-height: 1.09; letter-spacing: -0.04em; font-weight: 550; }
.architecture-section-heading > p:last-child:not(.eyebrow) { max-width: 40rem; margin-bottom: 0; color: var(--ink-muted); }
.architecture-decisions { margin: 0; }
.architecture-decisions > figcaption { width: fit-content; margin: 0 auto; padding: 0.75rem 1.25rem; text-align: center; border: 1px solid var(--rule-strong); background: var(--canvas); font-size: var(--font-small); }
.architecture-branches { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); position: relative; gap: 2rem; padding-top: 3rem; }
.architecture-branches::before { content: ""; position: absolute; top: 1.5rem; left: calc((100% - 4rem) / 6); right: calc((100% - 4rem) / 6); border-top: 1px solid var(--rule-strong); }
.architecture-branches::after { content: ""; position: absolute; top: 0; left: 50%; height: 1.5rem; border-left: 1px solid var(--rule-strong); }
.architecture-branch { position: relative; display: grid; grid-template-rows: 7.75rem 1.5rem 1fr; }
.architecture-branch::before { content: ""; position: absolute; top: -1.5rem; height: 1.5rem; left: 50%; border-left: 1px solid var(--rule-strong); }
.architecture-condition { padding: 1.25rem 0.5rem 0; text-align: center; }
.architecture-condition .architecture-node-label { margin-bottom: 0.6rem; }
.architecture-condition h3 { margin: 0; font-size: clamp(1.15rem, 1.85vw, 1.5rem); line-height: 1.2; letter-spacing: -0.025em; font-weight: 550; }
.architecture-branch-arrow { justify-self: center; position: relative; height: 1.2rem; border-left: 1px solid var(--rule-strong); }
.architecture-branch-arrow::after { content: ""; position: absolute; bottom: 0; left: -3.5px; width: 6px; height: 6px; border-right: 1px solid var(--rule-strong); border-bottom: 1px solid var(--rule-strong); transform: rotate(45deg); }
.architecture-branch-result { margin-top: 0.75rem; padding: 1.5rem; background: var(--canvas); border-top: 1px solid var(--rule-strong); }
.architecture-branch-result p { margin: 0.8rem 0 0; font-size: var(--font-small); color: var(--ink-muted); }
.architecture-branch-result strong { color: var(--ink-strong); font-weight: 600; }
.architecture-recheck { display: inline-block; font-weight: 600; color: var(--ink-strong); line-height: 1.6; }
.architecture-principle { margin: 2rem 0 0; padding-top: 1.5rem; border-top: 1px solid var(--rule-strong); font-weight: 550; }
.architecture-invariants { padding: 0; margin: 0; list-style: none; border-bottom: 1px solid var(--rule-soft); }
.architecture-invariants li { display: grid; grid-template-columns: 2.5rem minmax(12rem, 0.85fr) minmax(0, 1.5fr); gap: 1rem 2rem; align-items: baseline; padding: 1.75rem 0; border-top: 1px solid var(--rule-soft); }
.architecture-invariants li > span { color: var(--ink-muted); font-family: var(--font-mono); font-size: var(--font-meta); }
.architecture-invariants h3 { margin: 0; font-size: clamp(1.25rem, 2.2vw, 1.65rem); line-height: 1.2; letter-spacing: -0.025em; font-weight: 550; }
.architecture-invariants p { margin: 0; color: var(--ink-muted); }
.architecture-details { margin-top: 2.5rem; border-top: 1px solid var(--rule-soft); border-bottom: 1px solid var(--rule-soft); }
.architecture-details summary { cursor: pointer; min-height: 3.5rem; padding: 1rem 0; color: var(--ink-strong); font-weight: 550; }
.architecture-details > div { padding: 0.5rem 0 1.5rem; }
.architecture-details h3 { margin: 1.25rem 0; font-size: 1.2rem; font-weight: 550; }
.architecture-terms, .architecture-evidence-checks { margin: 0; }
.architecture-terms > div, .architecture-evidence-checks > div { display: grid; grid-template-columns: 11rem 1fr; gap: 1rem; padding: 1rem 0; border-top: 1px solid var(--rule-soft); }
.architecture-terms dt, .architecture-evidence-checks dt { font-weight: 550; }
.architecture-terms dd, .architecture-evidence-checks dd { margin: 0; color: var(--ink-muted); }
.architecture-reference-scope { margin-top: 1.5rem; padding: 1.5rem; background: var(--canvas-secondary); font-size: var(--font-small); }
.architecture-reference-scope p { margin-bottom: 0.75rem; }
.architecture-fit-section { background: var(--surface-quiet); }
.architecture-requirements { padding: 0; margin: 0; list-style: none; }
.architecture-requirements li { display: grid; grid-template-columns: 2.5rem 1fr; gap: 1rem; border-top: 1px solid var(--rule-soft); padding: 1.4rem 0; }
.architecture-requirements li > span { padding-top: 0.2rem; font-family: var(--font-mono); font-size: var(--font-meta); color: var(--ink-muted); }
.architecture-requirements h3 { margin-bottom: 0.35rem; font-size: 1.1875rem; font-weight: 550; letter-spacing: -0.015em; }
.architecture-requirements p { max-width: 48rem; margin: 0; color: var(--ink-muted); font-size: var(--font-small); }
.architecture-current-scope { margin: 1.5rem 0 2rem; padding: 1.5rem; background: var(--canvas-secondary); font-size: var(--font-small); color: var(--ink-muted); }
.architecture-current-scope p { margin-bottom: 0.65rem; }
.architecture-current-scope p:last-child { margin-bottom: 0; }
.architecture-current-scope strong { color: var(--ink-strong); font-weight: 550; }
@media (max-width: 61.24rem) {
  .architecture-title-row { grid-template-columns: 1.35fr 1fr; gap: 2rem; }
  .architecture-gate { padding: 1.3rem; }
  .architecture-stage { grid-template-columns: minmax(0, 1fr) 3.5rem minmax(0, 1.3fr) 2.5rem minmax(0, 0.9fr); }
  .architecture-branches { gap: 1rem; }
  .architecture-branches::before { left: calc((100% - 2rem) / 6); right: calc((100% - 2rem) / 6); }
  .architecture-branch-result { padding: 1.25rem; }
  .architecture-invariants li { gap: 1rem; grid-template-columns: 2rem minmax(10rem, 0.85fr) minmax(0, 1.5fr); }
}
@media (max-width: 47.99rem) {
  .architecture-title-row { grid-template-columns: 1fr; gap: 1.5rem; }
  .architecture-title-row h1 { font-size: clamp(2.625rem, 8.8vw, 3.75rem); }
  .architecture-title-row .lead { max-width: 30rem; }
  .architecture-availability { margin: 1.75rem 0 2.5rem; }
  .architecture-boundary figcaption { grid-template-columns: 1fr; }
  .architecture-boundary figcaption .eyebrow { grid-column: auto; }
  .architecture-obligation { margin-top: 0.45rem; }
  .architecture-stage { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); grid-template-rows: auto 4rem auto 2.5rem auto; column-gap: 1.5rem; row-gap: 0; padding: 2rem 0 0.75rem; }
  .architecture-original { grid-area: 1 / 1; align-self: start; }
  .architecture-proposal { grid-area: 1 / 2; align-self: start; }
  .architecture-source h2 { margin-bottom: 0.8rem; font-size: 1.25rem; }
  .architecture-flow { align-self: stretch; align-items: center; padding: 0.3rem 0 0; gap: 0.35rem; }
  .architecture-flow--evidence { grid-area: 2 / 1; }
  .architecture-flow--request { grid-area: 2 / 2; }
  .architecture-flow span { font-size: var(--font-meta); }
  .architecture-flow i { width: 0; height: 1.6rem; border-top: 0; border-left: 1.5px solid var(--ink-muted); }
  .architecture-flow--evidence i { border-left-style: dashed; }
  .architecture-flow i::after { top: auto; right: -3px; bottom: 2px; transform: rotate(135deg); }
  .architecture-gate { grid-area: 3 / 1 / 4 / 3; padding: 1.5rem; }
  .architecture-gate dl { margin: 1.35rem 0; }
  .architecture-gate dd { font-size: 1.625rem; }
  .architecture-gate-decision { display: flex; gap: 1rem; align-items: center; }
  .architecture-gate-decision p { margin: 0; }
  .architecture-stop { grid-area: 4 / 1 / 5 / 3; align-self: start; justify-self: center; padding: 0.35rem 0 0; }
  .architecture-stop i { width: 0; height: 1.5rem; border-top: 0; border-left: 2px solid var(--hold-border); }
  .architecture-stop i::after { top: auto; bottom: 0; right: -0.45rem; height: 0; width: 1rem; border-right: 0; border-top: 2px solid var(--hold-border); }
  .architecture-destination { grid-area: 5 / 1 / 6 / 3; padding: 1.25rem 0 0; border-left: 0; border-top: 1px dashed var(--rule-strong); }
  .architecture-destination h2 { margin-bottom: 0.5rem; font-size: 1.375rem; }
  .architecture-destination .architecture-node-label { margin-bottom: 0.35rem; }
  .architecture-section-heading { margin-bottom: 2rem; }
  .architecture-decisions > figcaption { width: 100%; text-align: left; }
  .architecture-branches { grid-template-columns: 1fr; gap: 1.5rem; padding: 1.75rem 0 0 1rem; margin-left: 0.3rem; border-left: 1px solid var(--rule-strong); }
  .architecture-branches::before, .architecture-branches::after { display: none; }
  .architecture-branch { grid-template-rows: auto 1.5rem auto; }
  .architecture-branch::before { width: 1rem; height: 0; top: 1.6rem; left: -1rem; border-left: 0; border-top: 1px solid var(--rule-strong); }
  .architecture-condition { padding: 0.75rem 0.75rem 1rem; text-align: left; }
  .architecture-condition h3 { font-size: 1.375rem; }
  .architecture-condition .architecture-node-label { margin-bottom: 0.4rem; }
  .architecture-branch-result { margin-top: 0.25rem; padding: 1.25rem; }
  .architecture-branch-arrow { justify-self: start; margin-left: 1rem; }
  .architecture-principle { font-size: 1rem; }
  .architecture-invariants li { grid-template-columns: 2rem minmax(0, 1fr); gap: 0.75rem; padding: 1.4rem 0; }
  .architecture-invariants p { grid-column: 2; font-size: var(--font-small); }
  .architecture-terms > div, .architecture-evidence-checks > div { grid-template-columns: 1fr; gap: 0.4rem; }
  .architecture-reference-scope { padding: 1.1rem; }
  .architecture-current-scope { padding: 1.25rem; }
}
@media (forced-colors: active) {
  .architecture-gate, .architecture-branch-result, .architecture-decisions > figcaption { border-color: CanvasText; }
  .architecture-flow i, .architecture-flow i::after, .architecture-stop i, .architecture-stop i::after, .architecture-branches, .architecture-branches::before, .architecture-branches::after, .architecture-branch::before, .architecture-branch-arrow, .architecture-branch-arrow::after { border-color: CanvasText; }
}