/* A signal's route through the course; uses each theme's existing paper and channel colors. */
.flow-page { max-width: 1440px; margin: auto; padding: 48px var(--gutter) 80px; }
.flow-heading { max-width: 780px; margin-bottom: 40px; }
.flow-heading h1, .pd-domain-hero h1 { font: 650 clamp(42px, 5vw, 72px)/1.04 var(--display); letter-spacing: -.045em; margin: 0 0 20px; }
.flow-heading p, .pd-domain-hero p { max-width: 56ch; color: var(--ink-2); font-size: 18px; line-height: 1.6; }
.chip-flow { margin-block: 32px 48px; }
.flow-main { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 18px; }
.flow-step { --flow-color: var(--ch-pd); display: flex; flex-direction: column; gap: 8px; position: relative; min-width: 0; padding: 22px 18px; border: 1px solid var(--rule-strong); border-radius: 16px; background: var(--card); color: var(--ink); text-decoration: none; box-shadow: var(--shadow-case); }
.flow-step:not(:last-child)::after { content: '→'; position: absolute; left: 100%; width: 20px; top: 28px; text-align: center; color: var(--muted); }
.flow-design { --flow-color: var(--ch-rtl); }
.flow-dv { --flow-color: var(--ch-sv); }
.flow-analog { --flow-color: var(--ch-analog); }
.flow-node { width: 28px; height: 28px; margin-bottom: 12px; color: var(--flow-color); }
.flow-node svg { display: block; width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.flow-step strong { font: 650 clamp(17px, 1.6vw, 22px)/1.2 var(--display); }
.flow-step > span:not(.flow-node), .flow-step small { font-size: 13px; line-height: 1.5; color: var(--muted); }
.flow-step > small { margin-top: auto; color: var(--flow-color); }
.flow-step:hover { border-color: var(--flow-color); }
.flow-branch { display: flex; align-items: center; margin-left: 8%; }
.flow-branch > span { width: 50px; height: 70px; border-left: 2px solid var(--rule-strong); border-bottom: 2px solid var(--rule-strong); border-radius: 0 0 0 16px; margin-top: -40px; }
.flow-branch .flow-step { display: grid; grid-template-columns: 26px 1fr auto; gap: 6px 14px; margin-top: 18px; padding: 16px 22px; }
.flow-branch .flow-node { grid-row: span 2; margin: 0; align-self: center; }
.flow-branch strong { grid-column: 2; }
.flow-branch .flow-step > span:not(.flow-node) { grid-column: 2; }
.flow-branch .flow-step > small { grid-column: 3; grid-row: 1 / span 2; align-self: center; }
.flow-progress progress { display: block; width: 100%; height: 5px; accent-color: var(--flow-color); margin: 8px 0; }
.flow-counts { margin-top: 22px; font-size: 13px; color: var(--muted); }
.flow-counts summary { width: fit-content; cursor: pointer; padding-block: 8px; text-underline-offset: 3px; }
.flow-counts summary:hover { color: var(--ink); text-decoration: underline; }
.flow-counts p { max-width: 80ch; line-height: 1.6; }
.flow-counts dl { display: grid; gap: 12px; max-width: 80ch; }
.flow-counts dl > div { display: grid; grid-template-columns: 110px 1fr; gap: 12px; }
.flow-counts dt { font-weight: 600; color: var(--ink); }
.flow-counts dd { margin: 0; line-height: 1.6; }
.hub-domains { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.hub-domain { display: flex; flex-direction: column; align-items: flex-start; padding: 26px; border: 1px solid var(--rule); border-radius: 20px; background: var(--card); }
.hub-domain .path-symbol { width: 48px; height: 48px; color: var(--accent); margin-bottom: 24px; }
.hub-domain h2 { font-size: 25px; line-height: 1.2; min-height: 2.4em; margin: 0 0 14px; }
.hub-domain p { color: var(--ink-2); font-size: 15px; }
.hub-domain a { font-weight: 600; }
.hub-domain small { display: block; margin-bottom: 18px; color: var(--muted); }
.pd-domain-hero { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 52px; padding-top: 40px; margin-bottom: 44px; }
.flow-layout { min-width: 0; margin: 0; }
.flow-layout-screen { padding: 14px; border: 1px solid var(--screen-rule); border-radius: 24px; background: var(--screen); box-shadow: var(--shadow-case); }
.flow-layout .layout-svg { display: block; width: 100%; height: auto; max-height: 460px; }
.flow-layout figcaption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 12px; padding: 14px 4px; font-size: 12px; color: var(--muted); }
.pd-module-cards .atlas-modules { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.pd-module-cards .atlas-module { height: 100%; border: 1px solid var(--rule); border-radius: 16px; background: var(--card); }
.pd-module-cards .atlas-module summary { min-height: 100px; padding: 20px; }
.pd-module-cards .atlas-module-content { padding: 0 20px 20px; }
@media (max-width: 1100px) { .hub-domains { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 1000px) { .pd-domain-hero { gap: 28px; } .flow-main { gap: 12px; } .flow-step { padding: 18px 12px; } .flow-step:not(:last-child)::after { width: 14px; } }
@media (max-width: 700px) {
  .flow-page { padding-top: 32px; }
  .flow-main { grid-template-columns: 1fr; gap: 14px; }
  .flow-main .flow-step { display: grid; grid-template-columns: 26px 1fr auto; gap: 6px 14px; padding: 16px 20px; }
  .flow-main .flow-node { grid-row: 1 / span 2; align-self: center; margin: 0; }
  .flow-main .flow-step > span:not(.flow-node) { grid-column: 2; }
  .flow-main .flow-step > small { grid-column: 3; grid-row: 1 / span 2; align-self: center; margin: 0; }
  .flow-step:not(:last-child)::after { content: '↓'; top: 100%; left: 25px; line-height: 14px; }
  .flow-branch { margin-left: 20px; }
  .flow-branch > span { width: 22px; flex-shrink: 0; }
  .flow-branch .flow-step { padding: 16px; grid-template-columns: 24px 1fr; }
  .flow-branch .flow-step > small { grid-column: 2; grid-row: auto; }
  .hub-domains, .pd-domain-hero, .pd-module-cards .atlas-modules { grid-template-columns: 1fr; }
  .pd-domain-hero { gap: 28px; }
  .hub-domain { padding: 24px; }
  .hub-domain h2 { min-height: 0; }
}

.hub-track-links { display: flex; flex-wrap: wrap; gap: 8px 14px; list-style: none; padding: 0; margin: 18px 0 0; font-size: 13px; }
.hub-track-links li { margin: 0; }