:root {
  color-scheme: light;

  --c-rvap-blue: #1a77e3;
  --c-ms-blue: #0078d4;
  --c-navy: #032254;
  --c-mid-navy: #0f3a7a;
  --c-hero-accent: #bfdbfe;
  --c-surface: #f5f8fe;
  --c-paper: #fafbfd;
  --c-white: #ffffff;
  --c-muted-surface: #eef1fa;
  --c-line: #e3e6ed;
  --c-line-soft: #dde6f7;
  --c-ink: #111827;
  --c-ink-secondary: #47494e;
  --c-ink-muted: #6b7280;
  --c-teal: #14868a;
  --c-purple: #504092;
  --c-red: #dc2626;
  --c-green: #16a34a;
  --c-gold: #ca8a04;
  --c-gold-ink: #8b5e00;

  --hero-gradient: linear-gradient(135deg, #032254 0%, #0f3a7a 60%, #1a77e3 100%);
  --font-display: "Aptos Display", "Outfit", "Segoe UI", system-ui, sans-serif;
  --font-body: "Aptos", "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "Cascadia Code", "JetBrains Mono", "Fira Code", ui-monospace, "SFMono-Regular", monospace;

  --radius-sm: 7px;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-card: 0 1px 3px rgba(3, 34, 84, 0.08), 0 4px 12px rgba(3, 34, 84, 0.06);
  --shadow-lift: 0 10px 28px -12px rgba(3, 34, 84, 0.28), 0 2px 6px rgba(3, 34, 84, 0.08);
  --shadow-hero: 0 24px 60px rgba(3, 34, 84, 0.28);
  --max-width: 1200px;
  --section-space: 88px;
  --section-space-tight: 56px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  scroll-padding-top: 74px;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--c-white);
  color: var(--c-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: clip;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body,
button,
input {
  font-family: var(--font-body);
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

summary {
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--c-hero-accent);
  color: var(--c-navy);
}

* {
  scrollbar-color: var(--c-rvap-blue) var(--c-muted-surface);
  scrollbar-width: thin;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--c-muted-surface);
}

::-webkit-scrollbar-thumb {
  border: 2px solid var(--c-muted-surface);
  border-radius: 10px;
  background: var(--c-rvap-blue);
}

:where(a, button, input, summary):focus-visible {
  outline: 2px solid var(--c-rvap-blue);
  outline-offset: 3px;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--c-navy);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.06;
  text-wrap: balance;
}

h2 {
  font-size: clamp(1.8rem, 3vw + 0.35rem, 2.6rem);
}

h3 {
  font-size: 1.12rem;
  line-height: 1.22;
}

p {
  text-wrap: pretty;
}

code {
  border: 1px solid var(--c-line);
  border-radius: 4px;
  background: var(--c-muted-surface);
  color: var(--c-mid-navy);
  font-family: var(--font-mono);
  font-size: 0.83em;
  padding: 0.12em 0.34em;
  overflow-wrap: anywhere;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 10px;
  left: 12px;
  transform: translateY(-150%);
  border-radius: var(--radius-sm);
  background: var(--c-white);
  color: var(--c-navy);
  font-weight: 700;
  padding: 9px 14px;
  box-shadow: var(--shadow-lift);
}

.skip-link:focus {
  transform: translateY(0);
}

/* Header */
.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: 58px;
  border-bottom: 1px solid rgba(227, 230, 237, 0.9);
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  width: min(100%, 1440px);
  height: 58px;
  margin: 0 auto;
  padding: 0 40px;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: none;
  text-decoration: none;
}

.brand img {
  width: auto;
  height: 32px;
}

.site-nav {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 2px;
  margin-left: 2px;
}

.site-nav a {
  border-radius: var(--radius-sm);
  color: var(--c-ink-secondary);
  font-size: 0.84rem;
  font-weight: 500;
  line-height: 1;
  padding: 9px 10px;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav a[aria-current="page"] {
  background: var(--c-muted-surface);
  color: var(--c-navy);
}

.nav-actions {
  display: flex;
  align-items: center;
  flex: none;
  gap: 8px;
  margin-left: auto;
}

.nav-icon-button,
.nav-toggle {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--c-ink-secondary);
}

.nav-icon-button svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.7;
}

.nav-toggle {
  display: none;
  align-content: center;
  gap: 4px;
}

.nav-toggle span {
  width: 18px;
  height: 1.5px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease-out), opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--hero-gradient);
  color: var(--c-white);
  padding: 100px 0 88px;
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 26px 26px;
}

.hero__inner,
.phase-register {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 80px), var(--max-width));
  margin-inline: auto;
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.92fr);
  align-items: center;
  gap: 64px;
}

.hero__copy,
.program-outcome {
  min-width: 0;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 20px;
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.17em;
  line-height: 1.45;
  text-transform: uppercase;
}

.hero__eyebrow::before {
  width: 18px;
  height: 1px;
  content: "";
  background: rgba(255, 255, 255, 0.55);
}

.hero h1 {
  max-width: 12ch;
  color: var(--c-white);
  font-size: clamp(2.7rem, 5vw + 0.4rem, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.hero h1 span {
  color: var(--c-hero-accent);
}

.hero__lead {
  max-width: 58ch;
  margin: 22px 0 32px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(1rem, 1.2vw + 0.55rem, 1.18rem);
  line-height: 1.72;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero__status {
  max-width: 46ch;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.82rem;
  line-height: 1.6;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1;
  padding: 11px 22px;
  text-decoration: none;
  transition:
    transform 0.18s var(--ease-out),
    opacity 0.18s,
    background 0.18s,
    border-color 0.18s,
    box-shadow 0.18s;
}

.button svg {
  width: 18px;
  height: 18px;
  margin-left: 7px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.button--primary {
  background: var(--c-rvap-blue);
  color: var(--c-white);
  box-shadow: 0 4px 20px -6px rgba(26, 119, 227, 0.62);
}

.button--secondary {
  border-color: var(--c-line);
  background: transparent;
  color: var(--c-navy);
}

.hero .button--primary {
  background: var(--c-white);
  color: var(--c-navy);
  box-shadow: none;
}

.hero .button--secondary {
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--c-white);
}

.program-docket {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 52px 0 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-hero);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.program-docket div {
  min-width: 0;
  padding: 20px 12px 18px;
  text-align: center;
}

.program-docket div + div {
  border-left: 1px solid rgba(255, 255, 255, 0.16);
}

.program-docket dd {
  margin: 0;
  color: var(--c-white);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
}

.program-docket dt {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  line-height: 1.35;
  text-transform: uppercase;
}

.program-outcome {
  align-self: stretch;
  display: grid;
  gap: 18px;
  padding: clamp(22px, 3vw, 30px);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.06)),
    rgba(3, 34, 84, 0.24);
  box-shadow: var(--shadow-hero);
  color: var(--c-white);
}

.program-outcome__head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.program-outcome__title {
  display: grid;
  gap: 7px;
}

.program-outcome__title > span {
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.program-outcome__title strong {
  max-width: 19ch;
  color: var(--c-white);
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 2vw + 0.55rem, 2.25rem);
  letter-spacing: -0.015em;
  line-height: 1.12;
}

.outcome-lines {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.outcome-lines li {
  position: relative;
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 14px;
  min-width: 0;
  padding: 15px 16px 15px 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
}

.outcome-lines li::before {
  position: absolute;
  inset: 15px auto 15px 0;
  width: 1px;
  content: "";
  background: rgba(255, 255, 255, 0.34);
}

.outcome-lines__label {
  padding-top: 2px;
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.outcome-lines li > span:last-child {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.outcome-lines strong {
  color: var(--c-white);
  font-size: 0.96rem;
  line-height: 1.35;
}

.outcome-lines small {
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.87rem;
  line-height: 1.5;
}

.phase-register {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 44px;
}

.phase-register a {
  position: relative;
  display: grid;
  gap: 5px;
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  color: var(--c-white);
  padding: 19px 19px 17px;
  text-decoration: none;
  transition: transform 0.2s var(--ease-out), background 0.2s;
}

.phase-register a::before {
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  content: "";
  background: var(--phase-color, var(--c-rvap-blue));
}

.phase-register a:nth-child(1) {
  --phase-color: var(--c-rvap-blue);
}

.phase-register a:nth-child(2) {
  --phase-color: var(--c-teal);
}

.phase-register a:nth-child(3) {
  --phase-color: var(--c-purple);
}

.phase-register span {
  color: rgba(255, 255, 255, 0.68);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
}

.phase-register strong {
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.25;
}

.phase-register small {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.78rem;
  line-height: 1.45;
}

/* Shared section structure */
.section {
  width: min(calc(100% - 80px), var(--max-width));
  margin-inline: auto;
  padding-block: var(--section-space);
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 36px;
}

.section-heading > div,
.section-heading > p,
.section-heading > h2 {
  max-width: 700px;
}

.section-heading p {
  max-width: 68ch;
  margin: 12px 0 0;
  color: var(--c-ink-secondary);
  font-size: 1rem;
  line-height: 1.68;
}

.section-heading--light h2 {
  color: var(--c-white);
}

.section-heading--light p {
  color: rgba(255, 255, 255, 0.75);
}

.product-split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.product-split > div {
  min-width: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  background: var(--c-white);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.product-split p {
  margin: 14px 0 0;
  color: var(--c-ink-secondary);
  line-height: 1.65;
}

.service-heading {
  display: flex;
  align-items: center;
  gap: 12px;
}

.service-icon,
.session-service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius-sm);
  background: var(--c-white);
}

.service-icon {
  width: 40px;
  height: 40px;
}

.service-icon img {
  width: 25px;
  height: 25px;
  object-fit: contain;
}

/* Engagement readiness */
.readiness-section {
  border-block: 1px solid var(--c-line-soft);
  background: var(--c-surface);
}

.readiness-note {
  max-width: 34ch !important;
  margin: 0 !important;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  background: var(--c-white);
  color: var(--c-mid-navy) !important;
  font-size: 0.88rem !important;
  padding: 14px 16px;
}

.readiness-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

.readiness-grid article {
  grid-column: span 2;
  min-width: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-white);
  padding: 20px;
}

.readiness-grid article:nth-child(4):nth-last-child(2) {
  grid-column: 2 / span 2;
}

.readiness-grid article:nth-child(5):nth-last-child(1) {
  grid-column: 4 / span 2;
}

.readiness-grid article > span,
.kit-brief__label {
  display: block;
  margin-bottom: 9px;
  color: var(--c-mid-navy);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.35;
  text-transform: uppercase;
}

.readiness-grid h3 {
  font-size: 1rem;
}

.readiness-grid p {
  margin: 9px 0 0;
  color: var(--c-ink-secondary);
  font-size: 0.86rem;
  line-height: 1.58;
}

.kit-brief {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  align-items: center;
  gap: 36px;
  margin-top: 28px;
  border-radius: var(--radius-lg);
  background: var(--c-navy);
  color: var(--c-white);
  padding: clamp(24px, 4vw, 36px);
}

.kit-brief h3 {
  color: var(--c-white);
  font-size: 1.4rem;
}

.kit-brief p {
  max-width: 58ch;
  margin: 13px 0 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.9rem;
  line-height: 1.65;
}

.kit-brief__label {
  color: var(--c-hero-accent);
}

.kit-brief pre {
  min-width: 0;
  margin: 0;
  overflow-x: auto;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  padding: 18px;
}

.kit-brief pre code {
  display: block;
  border: 0;
  background: transparent;
  color: var(--c-white);
  font-size: 0.78rem;
  line-height: 1.75;
  padding: 0;
  white-space: pre;
}

/* Program */
.program {
  padding-bottom: var(--section-space);
}

.section-heading--program {
  align-items: flex-start;
}

.register-instruction {
  max-width: 34ch !important;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  background: var(--c-surface);
  color: var(--c-ink-secondary) !important;
  font-size: 0.88rem !important;
  margin: 0 !important;
  padding: 13px 15px;
}

.registry-controls {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 22px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-surface);
  padding: 16px;
}

.registry-search {
  display: grid;
  flex: 0 1 320px;
  min-width: 230px;
  gap: 6px;
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.registry-search__field {
  display: flex;
  align-items: center;
  min-width: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-white);
  padding: 0 11px;
}

.registry-search__field:focus-within {
  border-color: var(--c-rvap-blue);
  box-shadow: 0 0 0 3px rgba(26, 119, 227, 0.12);
}

.registry-search svg {
  width: 18px;
  height: 18px;
  flex: none;
  fill: none;
  stroke: var(--c-ink-muted);
  stroke-linecap: round;
  stroke-width: 1.5;
}

.registry-search input {
  width: 100%;
  min-width: 0;
  height: 40px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--c-ink);
  font-size: 0.88rem;
  padding: 0 0 0 9px;
}

.registry-search input::placeholder {
  color: var(--c-ink-muted);
}

.registry-status {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin: 14px 0 22px;
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.04em;
}

.registry-status output {
  color: var(--c-mid-navy);
  font-weight: 600;
}

.route-filter-row {
  margin-top: 14px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-white);
  padding: 16px;
}

.route-filter-row__head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.route-filter-row__head h3 {
  font-size: 0.95rem;
}

.route-filter-row__head p {
  margin: 4px 0 0;
  color: var(--c-ink-muted);
  font-size: 0.82rem;
}

.route-filter-row__head a {
  flex: none;
  color: var(--c-mid-navy);
  font-size: 0.82rem;
  font-weight: 700;
}

.route-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.route-filter {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 38px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-white);
  color: var(--c-ink-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 8px 12px;
  cursor: pointer;
}

.route-filter span {
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
}

.route-filter[aria-pressed="true"] {
  border-color: var(--c-mid-navy);
  background: var(--c-mid-navy);
  color: var(--c-white);
}

.route-filter[aria-pressed="true"] span {
  color: rgba(255, 255, 255, 0.75);
}

.session-register {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 18px;
}

.module-register {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 18px;
}

.session-register__head {
  display: none;
}

.phase-marker {
  display: flex;
  align-items: baseline;
  grid-column: 1 / -1;
  min-width: 0;
  gap: 12px;
  margin-top: 16px;
  padding: 12px 0 2px;
  border-bottom: 1px solid var(--c-line);
}

.phase-marker:first-of-type {
  margin-top: 0;
}

.phase-marker span,
.phase-marker small {
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.phase-marker strong {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--c-navy);
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.phase-marker strong::before {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  content: "";
  background: var(--phase-color, var(--c-rvap-blue));
}

.phase-marker small {
  margin-left: auto;
}

.phase-marker[data-phase-marker="foundation"],
.session-record[data-phase="foundation"] {
  --phase-color: var(--c-rvap-blue);
}

.phase-marker[data-phase-marker="runtime"],
.session-record[data-phase="runtime"] {
  --phase-color: var(--c-teal);
}

.phase-marker[data-phase-marker="operations"],
.session-record[data-phase="operations"] {
  --phase-color: var(--c-purple);
}

.session-record {
  position: relative;
  display: grid;
  grid-template-columns: 40px 40px minmax(0, 1fr) 22px;
  grid-template-rows: auto 1fr auto;
  align-items: start;
  gap: 12px;
  height: 300px;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-white);
  color: inherit;
  cursor: pointer;
  padding: 22px 20px 18px;
  box-shadow: var(--shadow-card);
  text-decoration: none;
  transition:
    transform 0.22s var(--ease-out),
    border-color 0.22s,
    box-shadow 0.22s;
}

.module-record {
  --phase-color: var(--c-gold);
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 22px;
  grid-template-rows: auto 1fr auto;
  align-items: start;
  gap: 12px;
  min-height: 284px;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-white);
  color: inherit;
  cursor: pointer;
  padding: 22px 20px 18px;
  box-shadow: var(--shadow-card);
  text-decoration: none;
  transition:
    transform 0.22s var(--ease-out),
    border-color 0.22s,
    box-shadow 0.22s;
}

.session-record::before {
  position: absolute;
  z-index: 1;
  inset: 0 0 auto;
  height: 3px;
  content: "";
  background: var(--phase-color);
}

.module-record::before {
  position: absolute;
  z-index: 1;
  inset: 0 0 auto;
  height: 3px;
  content: "";
  background: var(--phase-color);
}

.session-number {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--phase-color);
  color: var(--c-white);
  font-family: var(--font-mono);
  font-size: 1.18rem;
  font-weight: 700;
}

.session-service-icon {
  width: 40px;
  height: 40px;
}

.session-service-icon img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.session-core {
  display: grid;
  grid-column: 3;
  grid-row: 1;
  min-width: 0;
  gap: 4px;
}

.module-record .session-core {
  grid-column: 2;
}

.module-record .session-arrow {
  grid-column: 3;
}

.session-service-label {
  color: var(--c-mid-navy);
  font-family: var(--font-mono);
  font-size: 0.61rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.3;
  text-transform: uppercase;
}

.session-title {
  color: var(--c-navy);
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.22;
  overflow-wrap: anywhere;
}

.session-objective {
  color: var(--c-ink-secondary);
  font-size: 0.83rem;
  line-height: 1.52;
  overflow-wrap: anywhere;
}

.session-outcome {
  grid-column: 1 / -1;
  grid-row: 2;
  min-width: 0;
  border-top: 1px solid var(--c-line-soft);
  color: var(--c-ink-secondary);
  font-size: 0.82rem;
  line-height: 1.5;
  margin-top: 4px;
  padding-top: 12px;
  overflow-wrap: anywhere;
}

.session-duration {
  align-self: center;
  border: 1px solid var(--c-line);
  border-radius: 4px;
  background: var(--c-surface);
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.61rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1;
  padding: 5px 7px;
  text-transform: uppercase;
}

.session-duration {
  grid-column: 1 / 3;
  grid-row: 3;
  justify-self: start;
}

.session-arrow {
  grid-column: 4;
  grid-row: 1;
  width: 20px;
  height: 20px;
  margin-top: 9px;
  fill: none;
  stroke: var(--c-ink-muted);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
  transition: transform 0.2s var(--ease-out);
}

.session-record:hover .session-arrow,
.session-record:focus-visible .session-arrow,
.module-record:hover .session-arrow,
.module-record:focus-visible .session-arrow {
  transform: translateX(3px);
}

.optional-modules-section {
  border-top: 1px solid var(--c-line-soft);
  background: linear-gradient(180deg, var(--c-white) 0%, var(--c-surface) 100%);
}

.empty-result {
  margin: 22px 0 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-surface);
  color: var(--c-ink-secondary);
  padding: 18px;
  text-align: center;
}

/* Session implementation pages */
.session-page {
  --session-phase: var(--c-rvap-blue);
  background: var(--c-paper);
}

.session-page[data-session-phase="runtime"] {
  --session-phase: var(--c-teal);
}

.session-page[data-session-phase="operations"] {
  --session-phase: var(--c-purple);
}

.session-content-width {
  width: min(calc(100% - 80px), 1120px);
  margin-inline: auto;
}

.session-hero {
  --session-phase: var(--c-rvap-blue);
  background: var(--hero-gradient);
  color: var(--c-white);
}

.session-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 190px;
  align-items: center;
  width: min(calc(100% - 80px), 1120px);
  min-height: 430px;
  margin-inline: auto;
  gap: 72px;
  padding-block: 70px;
}

.session-hero--chapter .session-hero__inner {
  grid-template-columns: minmax(0, 1fr) 132px;
  min-height: 0;
  gap: 36px;
  padding-block: 32px;
}

.session-hero--chapter .session-hero__mark {
  grid-template-columns: minmax(0, 1fr) 44px;
  align-self: center;
  min-height: 88px;
  gap: 10px;
  border-radius: var(--radius);
  box-shadow: none;
  padding: 16px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.82rem;
}

.breadcrumb a {
  color: var(--c-white);
}

.session-hero__phase {
  margin: 12px 0 0;
  color: var(--c-hero-accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.session-hero h1 {
  max-width: 780px;
  color: var(--c-white);
  font-size: clamp(2.6rem, 5vw, 4.4rem);
  letter-spacing: -0.03em;
}

.session-hero--chapter h1 {
  font-size: clamp(2rem, 3.4vw, 3rem);
  letter-spacing: -0.025em;
}

.session-hero__session-title {
  max-width: 72ch;
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
}

.session-hero__objective {
  max-width: 68ch;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.08rem;
  line-height: 1.7;
}

.session-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.session-hero .button--primary {
  background: var(--c-white);
  color: var(--c-navy);
}

.session-hero .button--secondary {
  border-color: rgba(255, 255, 255, 0.34);
  color: var(--c-white);
}

.session-hero__mark {
  display: grid;
  place-items: center;
  align-self: stretch;
  min-height: 250px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-hero);
}

.session-hero__mark small {
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-align: center;
  text-transform: uppercase;
}

.session-hero__mark span {
  color: var(--c-white);
  font-family: var(--font-display);
  font-size: 5.6rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}

.session-hero--chapter .session-hero__mark span {
  font-size: 2.5rem;
}

.session-hero__mark img {
  width: 62px;
  height: 62px;
  padding: 10px;
  border-radius: var(--radius);
  background: var(--c-white);
  object-fit: contain;
}

.session-hero--chapter .session-hero__mark img {
  width: 44px;
  height: 44px;
  padding: 7px;
  border-radius: var(--radius-sm);
}

.module-page .session-hero__mark {
  gap: 10px;
  padding: 26px;
}

.module-page .session-hero--chapter .session-hero__mark {
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 12px;
}

.module-page .session-hero__mark span {
  font-size: clamp(2.4rem, 4vw, 3.5rem);
  letter-spacing: -0.02em;
  text-align: center;
}

.module-page .session-hero--chapter .session-hero__mark span {
  font-size: 1.8rem;
}

.session-brief {
  margin-top: 3rem;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  background: var(--c-surface);
  padding: 28px;
  container-type: inline-size;
}

.session-brief > h2 {
  margin-bottom: 24px;
  font-size: clamp(1.45rem, 3vw, 1.8rem);
}

.session-brief__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.session-brief__list h3 {
  margin-bottom: 14px;
  font-size: 1.05rem;
}

.session-brief .session-brief__list ul {
  margin: 0;
  padding-inline-start: 0;
  color: var(--c-ink-secondary);
  font-size: 0.95rem;
  line-height: 1.58;
  list-style: none;
}

.session-brief__audience {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--c-line);
}

.session-brief__audience ul {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: 12px;
}

.session-brief__audience li {
  border-top: 1px solid var(--c-line);
  color: var(--c-navy);
  font-weight: 600;
  padding-top: 10px;
}

.session-brief__requirements {
  padding-top: 20px;
}

.session-brief__requirements li {
  position: relative;
  border-top: 1px solid var(--c-line);
  padding: 12px 0 12px 20px;
  overflow-wrap: anywhere;
}

.session-brief__requirements li::before {
  position: absolute;
  top: calc(12px + 0.62em);
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--session-phase);
  content: "";
}

.session-brief__requirements li:last-child {
  padding-bottom: 0;
}

.session-brief__references {
  margin-top: 24px;
  border-top: 1px solid var(--c-line);
  padding-top: 20px;
}

.session-brief__references ul {
  display: grid;
}

.session-brief__references li {
  border-top: 1px solid var(--c-line);
  overflow-wrap: anywhere;
}

.session-brief__references a {
  display: block;
  min-height: 44px;
  padding: 10px 0;
}

.session-brief .session-brief__list li {
  margin: 0;
  break-inside: avoid;
}

@container (min-width: 640px) {
  .session-brief__audience ul {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.session-reading-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  align-items: start;
  gap: 64px;
  padding-block: 72px 90px;
}

.session-toc {
  position: sticky;
  top: 86px;
}

.session-toc h2 {
  margin-bottom: 14px;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.session-toc ol {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 8px;
  list-style: none;
}

.session-toc a {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  align-items: start;
  gap: 8px;
  border-left: 1px solid var(--c-line);
  color: var(--c-ink-secondary);
  font-size: 0.79rem;
  line-height: 1.4;
  padding: 7px 8px 7px 12px;
  text-decoration: none;
}

.session-toc a > span {
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  line-height: 1.65;
}

.session-toc a[aria-current="page"] {
  border-left-color: var(--session-phase);
  background: rgba(26, 119, 227, 0.07);
  color: var(--c-navy);
  font-weight: 700;
}

.session-toc a[aria-current="page"] > span {
  color: var(--session-phase);
}

.implementation-guide {
  min-width: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-white);
  padding: clamp(26px, 5vw, 58px);
  box-shadow: var(--shadow-card);
}

.implementation-guide > :first-child {
  margin-top: 0;
}

.implementation-guide h2 {
  margin: 3.2rem 0 1.1rem;
  font-size: clamp(1.65rem, 3vw, 2.15rem);
  scroll-margin-top: 84px;
}

.implementation-guide h3 {
  margin: 2.1rem 0 0.8rem;
  scroll-margin-top: 84px;
}

.implementation-guide h4 {
  margin: 1.6rem 0 0.7rem;
  color: var(--c-navy);
  font-family: var(--font-display);
  font-size: 1rem;
  scroll-margin-top: 84px;
}

.heading-anchor {
  margin-left: 8px;
  color: var(--c-rvap-blue);
  font-family: var(--font-mono);
  font-size: 0.65em;
  font-weight: 500;
  opacity: 0;
  text-decoration: none;
}

.implementation-guide :is(h2, h3, h4):hover .heading-anchor,
.heading-anchor:focus-visible {
  opacity: 1;
}

.implementation-guide p,
.implementation-guide li {
  max-width: 74ch;
  color: var(--c-ink-secondary);
}

.implementation-guide p {
  margin: 0 0 1.1rem;
}

.session-diagram {
  margin: 2rem 0;
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-white);
  padding: clamp(12px, 2.5vw, 24px);
}

.session-diagram img {
  display: block;
  width: 100%;
  height: auto;
}

.session-diagram__trigger {
  position: relative;
  display: block;
  width: 100%;
  border: 0;
  border-radius: calc(var(--radius-sm) - 3px);
  background: transparent;
  padding: 0;
  color: inherit;
  cursor: zoom-in;
  touch-action: manipulation;
}

.session-diagram__trigger::after {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  content: "";
  background: rgba(3, 34, 84, 0);
  pointer-events: none;
  transition: background-color 160ms ease-out;
}

.session-diagram__trigger:is(:hover, :focus-visible)::after {
  background: rgba(3, 34, 84, 0.06);
}

.session-diagram__hint {
  position: absolute;
  right: 10px;
  bottom: 10px;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border-radius: 8px;
  background: rgba(3, 34, 84, 0.92);
  padding: 8px 10px;
  color: var(--c-white);
  box-shadow: 0 6px 18px rgba(3, 34, 84, 0.22);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
}

.session-diagram__hint svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.has-open-dialog {
  overflow: hidden;
}

.diagram-dialog {
  width: min(96vw, 1600px);
  height: min(94vh, 1040px);
  max-width: none;
  max-height: none;
  overflow: hidden;
  border: 0;
  border-radius: var(--radius-lg);
  background: var(--c-white);
  padding: 0;
  box-shadow: 0 28px 80px rgba(3, 34, 84, 0.34);
}

.diagram-dialog::backdrop {
  background: rgba(3, 19, 48, 0.82);
}

.diagram-dialog__shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  height: 100%;
}

.diagram-dialog__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--c-line);
  padding: 14px 16px 14px 22px;
}

.diagram-dialog__header > div:first-child {
  min-width: 0;
}

.diagram-dialog__header h2 {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.diagram-dialog__header p {
  max-width: 90ch;
  margin: 4px 0 0;
  color: var(--c-ink-secondary);
  font-size: 0.78rem;
  line-height: 1.45;
}

.diagram-dialog__actions {
  display: flex;
  flex: none;
  align-items: center;
  gap: 10px;
}

.diagram-dialog__actions a,
.diagram-dialog__header button {
  display: grid;
  flex: none;
  min-width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  color: var(--c-navy);
  cursor: pointer;
  padding: 0 14px;
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
}

.diagram-dialog__header button {
  width: 44px;
  padding: 0;
}

.diagram-dialog__actions a:hover,
.diagram-dialog__header button:hover {
  background: var(--c-muted-surface);
}

.diagram-dialog__actions a:focus-visible,
.diagram-dialog__header button:focus-visible {
  outline: 3px solid var(--c-rvap-blue);
  outline-offset: 2px;
}

.diagram-dialog__header svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.8;
}

.diagram-dialog__viewport {
  min-height: 0;
  overflow: hidden;
  overscroll-behavior: contain;
  background: var(--c-muted-surface);
}

.diagram-dialog__viewport:focus-visible {
  outline: 3px solid var(--c-rvap-blue);
  outline-offset: -3px;
}

.diagram-dialog__canvas {
  display: grid;
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  overflow: hidden;
  box-sizing: border-box;
  place-items: center;
  padding: clamp(16px, 2.5vw, 36px);
}

.diagram-dialog__canvas img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: var(--c-white);
  box-shadow: 0 12px 36px rgba(3, 34, 84, 0.16);
}

.implementation-guide strong {
  color: var(--c-navy);
  font-weight: 700;
}

.implementation-guide ul,
.implementation-guide ol {
  margin: 0 0 1.25rem;
  padding-left: 1.35rem;
}

.implementation-guide li + li {
  margin-top: 0.48rem;
}

.implementation-guide blockquote {
  margin: 1.5rem 0;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  color: var(--c-mid-navy);
  font-size: 1.03rem;
  font-weight: 600;
  padding: 18px 20px;
}

.implementation-guide pre {
  max-width: 100%;
  margin: 1.35rem 0;
  overflow: auto;
  border-radius: var(--radius-sm);
  background: var(--c-navy);
  color: #e5efff;
  padding: 18px 20px;
  scrollbar-color: var(--c-hero-accent) var(--c-navy);
}

.implementation-guide pre code {
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 0.78rem;
  line-height: 1.7;
  padding: 0;
  overflow-wrap: normal;
}

.code-tabs {
  max-width: 100%;
  margin: 1.35rem 0;
}

.code-tabs__tabs {
  display: none;
  align-items: end;
  min-height: 44px;
  border: 1px solid var(--c-line);
  border-bottom: 0;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: var(--c-surface);
  padding: 6px 6px 0;
  gap: 2px;
}

.js .code-tabs__tabs {
  display: flex;
}

.code-tabs__tabs button {
  min-height: 37px;
  border: 0;
  border-bottom: 3px solid transparent;
  border-radius: 5px 5px 0 0;
  background: transparent;
  color: var(--c-ink-secondary);
  font-size: 0.84rem;
  font-weight: 650;
  line-height: 1;
  padding: 10px 14px 9px;
}

.code-tabs__tabs button:hover {
  background: var(--c-white);
  color: var(--c-navy);
}

.code-tabs__tabs button[aria-selected="true"] {
  border-bottom-color: var(--c-rvap-blue);
  background: var(--c-white);
  color: var(--c-navy);
}

.code-tabs__fallback-label {
  margin: 1.2rem 0 0.45rem;
  color: var(--c-navy);
  font-size: 0.82rem;
  font-weight: 700;
}

.js .code-tabs__fallback-label {
  display: none;
}

.implementation-guide .code-tabs pre {
  margin: 0;
}

.js .code-tabs__panel pre {
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.js .code-tabs__panel[hidden] {
  display: none;
}

.table-scroll {
  max-width: 100%;
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
}

.implementation-guide table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.83rem;
  line-height: 1.5;
}

.implementation-guide th,
.implementation-guide td {
  border-bottom: 1px solid var(--c-line);
  padding: 11px 13px;
  text-align: left;
  vertical-align: top;
}

.implementation-guide th {
  background: var(--c-surface);
  color: var(--c-navy);
  font-weight: 700;
}

.implementation-guide tr:last-child td {
  border-bottom: 0;
}

.session-pager {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding-bottom: 90px;
}

.session-pager a {
  display: grid;
  gap: 4px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-white);
  padding: 20px;
  text-decoration: none;
  box-shadow: var(--shadow-card);
}

.session-pager a:last-child {
  text-align: right;
}

.session-pager__spacer {
  display: block;
}

.session-pager span {
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.session-pager strong {
  color: var(--c-navy);
  font-family: var(--font-display);
}

.chapter-actions {
  grid-area: actions;
  display: grid;
  gap: 10px;
}

.deck-launcher,
.implementation-files-link {
  display: inline-flex;
  width: 100%;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: var(--radius);
  padding: 12px 16px;
  font-weight: 750;
  transition:
    background 0.18s,
    border-color 0.18s,
    box-shadow 0.18s,
    transform 0.18s var(--ease-out);
}

.deck-launcher {
  border: 1px solid color-mix(in srgb, var(--c-rvap-blue) 45%, white);
  background: color-mix(in srgb, var(--c-rvap-blue) 12%, white);
  color: var(--c-mid-navy);
  cursor: pointer;
  box-shadow: 0 8px 22px rgba(26, 119, 227, 0.13);
}

.deck-launcher:hover {
  border-color: var(--c-rvap-blue);
  background: color-mix(in srgb, var(--c-rvap-blue) 18%, white);
  box-shadow: 0 10px 26px rgba(26, 119, 227, 0.2);
  transform: translateY(-1px);
}

.deck-launcher:focus-visible,
.implementation-files-link:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--c-rvap-blue) 35%, transparent);
  outline-offset: 3px;
}

.deck-launcher svg,
.implementation-files-link svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.implementation-files-link {
  border: 1px solid color-mix(in srgb, var(--c-navy) 24%, white);
  background: var(--c-white);
  color: var(--c-navy);
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(3, 34, 84, 0.08);
}

.implementation-files-link:hover {
  border-color: color-mix(in srgb, var(--c-navy) 58%, white);
  background: var(--c-surface);
  box-shadow: 0 8px 20px rgba(3, 34, 84, 0.13);
  transform: translateY(-1px);
}

.deck-dialog {
  width: min(96vw, 1500px);
  height: min(92vh, 980px);
  max-width: none;
  max-height: none;
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  background: var(--c-white);
  padding: 0;
  box-shadow: 0 28px 80px rgba(3, 34, 84, 0.32);
}

.deck-dialog::backdrop {
  background: rgba(3, 19, 48, 0.78);
}

.deck-dialog__shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  height: 100%;
}

.deck-dialog__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--c-line);
  background: var(--c-white);
  padding: 14px 18px 14px 22px;
}

.deck-dialog__header p {
  margin: 0 0 2px;
  color: var(--session-phase);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.deck-dialog__header h2 {
  margin: 0;
  color: var(--c-navy);
  font-size: clamp(1rem, 2vw, 1.35rem);
}

.deck-dialog__actions {
  display: flex;
  align-items: center;
  flex: none;
  gap: 12px;
}

.deck-dialog__actions a {
  color: var(--c-mid-navy);
  font-size: 0.8rem;
  font-weight: 700;
  text-underline-offset: 3px;
}

.deck-dialog__actions button {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  color: var(--c-navy);
  cursor: pointer;
}

.deck-dialog__actions svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.8;
}

.deck-dialog__frame {
  min-height: 0;
  background: #111827;
}

.deck-dialog__frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
  background: #111827;
}

/* Routes */
.routes-section {
  border-block: 1px solid var(--c-line-soft);
  background: var(--c-surface);
}

.route-choice {
  display: grid;
  gap: 14px;
}

.route-choice__primary {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(360px, 0.9fr) auto;
  align-items: center;
  gap: 38px;
  border-radius: var(--radius);
  background: var(--c-navy);
  color: var(--c-white);
  padding: 28px 30px;
  box-shadow: var(--shadow-card);
}

.route-choice__primary h3 {
  color: var(--c-white);
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.2vw, 2rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.route-choice__primary p {
  max-width: 58ch;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 9px;
}

.route-choice__primary .button {
  justify-self: end;
  background: var(--c-white);
  color: var(--c-navy);
  box-shadow: none;
  white-space: nowrap;
}

.route-choice__sequence {
  display: grid;
  min-width: 0;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.route-choice__sequence li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.78rem;
}

.route-choice__sequence span {
  color: var(--c-white);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
}

.route-choice__heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin: 34px 2px 4px;
}

.route-choice__heading h3 {
  color: var(--c-navy);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  letter-spacing: -0.02em;
}

.route-choice__heading p {
  max-width: 62ch;
  color: var(--c-ink-secondary);
  font-size: 0.9rem;
  line-height: 1.55;
  margin-top: 5px;
}

.route-choice__legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px 18px;
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  white-space: nowrap;
}

.route-choice__legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.route-choice__legend i {
  width: 16px;
  height: 5px;
  border-radius: 2px;
  background: var(--c-line);
}

.route-choice__legend .is-foundation {
  background: var(--c-rvap-blue);
}

.route-choice__legend .is-runtime {
  background: var(--c-teal);
}

.route-choice__legend .is-operations {
  background: var(--c-purple);
}

.route-paths {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.route-path {
  display: grid;
  grid-template-rows: auto minmax(4.4em, auto) auto auto auto;
  min-width: 0;
  gap: 13px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-white);
  color: var(--c-ink);
  padding: 20px;
  text-decoration: none;
  transition:
    border-color 0.2s var(--ease-out),
    background 0.2s var(--ease-out),
    box-shadow 0.2s var(--ease-out),
    transform 0.2s var(--ease-out);
}

.route-path__header,
.route-path__footer,
.route-path__track-labels {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
  gap: 16px;
}

.route-path__header strong {
  color: var(--c-navy);
  font-family: var(--font-display);
  font-size: 1.04rem;
  line-height: 1.25;
}

.route-path__header > span {
  flex: none;
  color: var(--c-mid-navy);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 650;
}

.route-path__outcome {
  color: var(--c-ink-secondary);
  font-size: 0.84rem;
  line-height: 1.55;
}

.route-path__track {
  display: grid;
  grid-template-columns: repeat(15, minmax(3px, 1fr));
  align-items: center;
  gap: 4px;
  min-height: 12px;
}

.route-path__step {
  height: 5px;
  border-radius: 2px;
  background: var(--c-line);
}

.route-path__step.is-included.route-path__step--foundation {
  background: var(--c-rvap-blue);
}

.route-path__step.is-included.route-path__step--runtime {
  background: var(--c-teal);
}

.route-path__step.is-included.route-path__step--operations {
  background: var(--c-purple);
}

.route-path__step.is-end {
  height: 11px;
  border-radius: 3px;
}

.route-path__track-labels {
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.62rem;
}

.route-path__footer {
  align-self: end;
  padding-top: 3px;
  color: var(--c-ink-muted);
  font-size: 0.72rem;
}

.route-path__footer > span:not(.route-path__action) {
  white-space: nowrap;
}

.route-path__footer b {
  color: var(--c-navy);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.route-path__action {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-inline-start: auto;
  color: var(--c-mid-navy);
  font-weight: 700;
}

.route-path__action .session-arrow {
  width: 17px;
  height: 17px;
  flex: none;
}

.route-path[aria-current="page"] {
  border-color: var(--c-rvap-blue);
  background: color-mix(in srgb, var(--c-rvap-blue) 7%, white);
  box-shadow: inset 0 0 0 1px var(--c-rvap-blue);
}

.route-path[aria-current="page"] .route-path__action {
  color: var(--c-rvap-blue);
}

.route-choice__note {
  max-width: 90ch;
  color: var(--c-ink-muted);
  font-size: 0.76rem;
  line-height: 1.55;
  margin: 4px 2px 0;
}

/* Sources */
.sources-hero {
  position: relative;
  overflow: hidden;
  background: var(--hero-gradient);
  color: var(--c-white);
  padding: 88px 0 76px;
}

.sources-hero::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 26px 26px;
}

.sources-hero__inner {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 80px), var(--max-width));
  margin-inline: auto;
}

.sources-hero h1 {
  max-width: 14ch;
  color: var(--c-white);
  font-size: clamp(2.7rem, 5vw + 0.4rem, 4.2rem);
  letter-spacing: -0.025em;
}

.sources-hero p {
  max-width: 62ch;
  margin: 22px 0 30px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.08rem;
  line-height: 1.7;
}

.sources-hero .button--secondary {
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--c-white);
}

.section-heading--sources {
  align-items: flex-start;
}

.source-ledger {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 28px;
  margin: 0;
  border-block: 1px solid var(--c-line);
  padding: 0;
  list-style: none;
}

.source-ledger li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  min-width: 0;
  gap: 14px;
  border-bottom: 1px solid var(--c-line);
  padding: 13px 0;
}

.source-ledger li:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.source-ledger a {
  min-width: 0;
  color: var(--c-mid-navy);
  font-size: 0.83rem;
  font-weight: 600;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.source-ledger span {
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  line-height: 1.5;
  text-align: right;
  white-space: nowrap;
}

/* Footer */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 80px), var(--max-width));
  gap: 34px;
  margin-inline: auto;
  border-top: 1px solid var(--c-line);
  color: var(--c-ink-muted);
  padding: 34px 0 40px;
}

.site-footer__brand {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 16px;
}

.site-footer__brand img {
  width: auto;
  height: 30px;
}

.site-footer__brand span {
  color: var(--c-navy);
  font-family: var(--font-display);
  font-size: 0.86rem;
  font-weight: 700;
}

.site-footer p {
  max-width: 60ch;
  margin: 0;
  font-size: 0.76rem;
  line-height: 1.55;
  text-align: right;
}

/* 404 */
.error-page {
  position: relative;
  display: grid;
  min-height: 100vh;
  place-items: center;
  overflow: hidden;
  background: var(--hero-gradient);
  color: var(--c-white);
  padding: 28px;
}

.error-page::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 26px 26px;
}

.error-sheet {
  position: relative;
  z-index: 1;
  width: min(100%, 650px);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.06)),
    rgba(3, 34, 84, 0.24);
  box-shadow: var(--shadow-hero);
  padding: clamp(28px, 6vw, 54px);
}

.error-sheet__logo {
  width: auto;
  height: 42px;
  margin-bottom: 32px;
  border-radius: 4px;
}

.error-sheet h1 {
  color: var(--c-white);
  font-size: clamp(2.2rem, 6vw, 3.7rem);
}

.error-sheet p {
  max-width: 52ch;
  margin: 18px 0 28px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.05rem;
}

.error-sheet .button--primary {
  background: var(--c-white);
  color: var(--c-navy);
  box-shadow: none;
}

/* Interaction */
@media (hover: hover) {
  .site-nav a:hover,
  .nav-icon-button:hover,
  .nav-toggle:hover {
    background: var(--c-muted-surface);
    color: var(--c-navy);
  }

  .button:hover {
    transform: translateY(-1px);
  }

  .button--primary:hover {
    opacity: 0.9;
  }

  .button--secondary:hover {
    border-color: var(--c-rvap-blue);
    background: rgba(26, 119, 227, 0.06);
  }

  .hero .button--secondary:hover {
    background: rgba(255, 255, 255, 0.12);
  }

  .phase-register a:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.17);
  }

  .session-record:hover,
  .module-record:hover {
    transform: translateY(-3px);
    border-color: rgba(26, 119, 227, 0.32);
    box-shadow: var(--shadow-lift);
  }

  .module-record:hover {
    border-color: rgba(202, 138, 4, 0.36);
  }

  .session-record:hover .session-arrow,
  .module-record:hover .session-arrow {
    transform: translateX(3px);
  }

  .session-pager a:hover {
    border-color: rgba(26, 119, 227, 0.34);
    box-shadow: var(--shadow-lift);
  }

  .session-toc a:hover {
    border-left-color: var(--session-phase);
    background: rgba(26, 119, 227, 0.05);
    color: var(--c-navy);
  }

  .route-filter:hover {
    border-color: var(--c-rvap-blue);
    color: var(--c-mid-navy);
  }

  .route-filter[aria-pressed="true"]:hover {
    color: var(--c-white);
  }

  .route-path:hover {
    border-color: color-mix(in srgb, var(--c-rvap-blue) 55%, var(--c-line));
    box-shadow: var(--shadow-lift);
    transform: translateY(-2px);
  }

  .route-path:hover .route-path__action {
    color: var(--c-rvap-blue);
  }

  .route-path:hover .session-arrow {
    transform: translateX(3px);
  }
}

.button:active,
.route-filter:active {
  transform: scale(0.98);
}

/* Responsive */
@media (max-width: 1100px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(380px, 0.9fr);
    gap: 40px;
  }

  .control-plane-register ul,
  .session-register,
  .module-register {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

@media (max-width: 900px) {
  .route-choice__primary {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .route-choice__primary .button {
    justify-self: start;
  }

  .site-header {
    height: auto;
  }

  .site-header__inner {
    height: auto;
    min-height: 58px;
    flex-wrap: wrap;
    padding-inline: 24px;
  }

  .js .site-header {
    height: 58px;
  }

  .js .site-header__inner {
    height: 58px;
    min-height: 0;
    flex-wrap: nowrap;
  }

  .js .nav-toggle {
    display: grid;
  }

  .site-nav {
    order: 3;
    display: flex;
    width: 100%;
    align-items: center;
    flex-direction: row;
    gap: 2px;
    margin: 0;
    overflow-x: auto;
    border-top: 1px solid var(--c-line);
    padding: 6px 0;
  }

  .js .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    right: 24px;
    left: 24px;
    z-index: 2;
    order: initial;
    display: none;
    width: auto;
    align-items: stretch;
    flex-direction: column;
    overflow: visible;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lift);
    padding: 8px;
  }

  .js .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px;
  }

  .hero {
    padding: 76px 0 72px;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero h1 {
    max-width: 13ch;
  }

  .program-outcome {
    max-width: 700px;
  }

  .registry-controls {
    align-items: stretch;
    flex-direction: column;
  }

  .registry-search {
    flex-basis: auto;
    width: 100%;
  }

  .session-hero__inner {
    grid-template-columns: minmax(0, 1fr) 140px;
    gap: 38px;
  }

  .session-hero__mark {
    min-height: 220px;
  }

  .session-hero__mark span {
    font-size: 4.5rem;
  }

  .module-page .session-hero__mark span {
    font-size: 3rem;
  }

  .session-reading-layout {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 32px;
  }
}

@media (max-width: 760px) {
  .diagram-dialog {
    width: calc(100vw - 16px);
    height: calc(100vh - 16px);
    height: calc(100dvh - 16px);
    border-radius: var(--radius);
  }

  .diagram-dialog__header {
    gap: 12px;
    padding: 12px;
  }

  .diagram-dialog__header p {
    font-size: 0.7rem;
  }

  .diagram-dialog__canvas {
    padding: 12px;
  }

  .hero__inner,
  .phase-register,
  .sources-hero__inner,
  .section,
  .site-footer,
  .session-content-width,
  .session-hero__inner {
    width: min(calc(100% - 48px), var(--max-width));
  }

  .session-hero--chapter .session-hero__inner {
    grid-template-columns: 1fr;
    gap: 0;
    padding-block: 28px;
  }

  .session-hero--chapter .session-hero__mark {
    display: none;
  }

  .section {
    padding-block: 72px;
  }

  .phase-register,
  .product-split,
  .readiness-grid,
  .session-register,
  .module-register,
  .source-ledger {
    grid-template-columns: 1fr;
  }

  .readiness-grid article,
  .readiness-grid article:nth-child(4):nth-last-child(2),
  .readiness-grid article:nth-child(5):nth-last-child(1) {
    grid-column: auto;
  }

  .phase-register {
    margin-top: 36px;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 30px;
  }

  .register-instruction {
    max-width: none !important;
  }

  .kit-brief {
    grid-template-columns: 1fr;
  }

  .route-choice__heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  .route-choice__legend {
    justify-content: flex-start;
  }

  .route-paths {
    grid-template-columns: 1fr;
  }

  .route-path {
    grid-template-rows: auto auto auto auto auto;
  }

  .session-brief__grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .source-ledger li:nth-last-child(-n + 2) {
    border-bottom: 1px solid var(--c-line);
  }

  .source-ledger li:last-child {
    border-bottom: 0;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }

  .site-footer p {
    text-align: left;
  }
}

@media (max-width: 560px) {
  .site-header__inner {
    padding-inline: 18px;
  }

  .brand img {
    height: 28px;
  }

  .site-nav {
    right: 18px;
    left: 18px;
  }

  .nav-icon-button {
    display: none;
  }

  .hero {
    padding: 64px 0 60px;
  }

  .hero__inner,
  .phase-register,
  .sources-hero__inner,
  .section,
  .site-footer,
  .session-content-width,
  .session-hero__inner {
    width: min(calc(100% - 36px), var(--max-width));
  }

  .hero h1 {
    font-size: clamp(2.35rem, 11.5vw, 3.2rem);
  }

  .hero__lead {
    font-size: 1rem;
  }

  .hero__actions .button {
    width: 100%;
  }

  .program-docket {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 38px;
  }

  .program-docket div:nth-child(3) {
    border-top: 1px solid rgba(255, 255, 255, 0.16);
    border-left: 0;
  }

  .program-docket div:nth-child(4) {
    border-top: 1px solid rgba(255, 255, 255, 0.16);
  }

  .program-outcome {
    padding: 20px;
  }

  .outcome-lines li {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .section {
    padding-block: 62px;
  }

  .registry-status {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .route-filter-row__head {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .phase-marker {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .phase-marker small {
    width: 100%;
    margin-left: 0;
  }

  .session-record {
    grid-template-columns: 40px 40px minmax(0, 1fr) 20px;
    gap: 10px;
    padding: 20px 16px 16px;
  }

  .module-record {
    grid-template-columns: 40px minmax(0, 1fr) 20px;
    grid-template-rows: auto 1fr auto;
    gap: 10px;
    padding: 20px 16px 16px;
  }

  .module-record .session-service-icon {
    grid-column: 1;
    grid-row: 1;
  }

  .module-record .session-core {
    grid-column: 2;
    grid-row: 1;
  }

  .module-record .session-arrow {
    grid-column: 3;
    grid-row: 1;
  }

  .module-record .session-outcome {
    grid-row: 2;
  }

  .module-record .session-duration {
    grid-column: 1 / 3;
    grid-row: 3;
  }

  .route-choice__primary {
    padding: 24px 20px;
  }

  .route-choice__primary .button {
    width: 100%;
  }

  .route-path {
    padding: 18px 16px;
  }

  .route-path__header,
  .route-path__footer {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .route-path__action {
    width: 100%;
    margin-inline-start: 0;
  }

  .session-hero__actions .button {
    width: 100%;
  }

  .deck-dialog {
    width: calc(100vw - 16px);
    height: calc(100vh - 16px);
    border-radius: var(--radius);
  }

  .deck-dialog__header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 14px;
  }

  .deck-dialog__actions {
    width: 100%;
    justify-content: space-between;
  }

  .session-pager {
    grid-template-columns: 1fr;
  }

  .implementation-guide {
    padding: 26px 20px;
  }

  .session-pager a:last-child {
    text-align: left;
  }

  .session-hero__inner {
    grid-template-columns: 1fr;
    min-height: 0;
    gap: 34px;
    padding-block: 58px;
  }

  .session-hero:not(.session-hero--chapter) h1 {
    font-size: clamp(2.35rem, 10vw, 3.5rem);
  }

  .session-hero__mark {
    display: flex;
    min-height: 0;
    justify-content: space-between;
    padding: 20px 24px;
  }

  .session-hero--chapter .session-hero__mark {
    min-height: 0;
  }

  .session-hero__mark span {
    font-size: 3.7rem;
  }

  .module-page .session-hero__mark {
    align-items: center;
    gap: 12px;
    justify-content: center;
  }

  .module-page .session-hero__mark span {
    font-size: clamp(2.3rem, 9vw, 3rem);
  }

  .session-brief__grid,
  .session-reading-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .session-brief__grid {
    gap: 0;
  }

  .session-brief {
    padding: 20px;
  }

  .session-reading-layout {
    gap: 30px;
    padding-block: 54px 70px;
  }

  .session-toc {
    position: static;
    min-width: 0;
    border-bottom: 1px solid var(--c-line);
    padding-bottom: 24px;
  }

  .session-toc ol {
    display: flex;
    overflow-x: auto;
    padding-bottom: 8px;
    scroll-snap-type: x proximity;
    scrollbar-color: var(--c-rvap-blue) var(--c-surface);
  }

  .session-toc li {
    flex: 0 0 min(74vw, 250px);
    scroll-snap-align: start;
  }

  .session-toc a {
    min-height: 48px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius-sm);
    background: var(--c-white);
    padding: 10px 12px;
  }

  .session-toc a[aria-current="page"] {
    border-color: var(--session-phase);
  }

  .session-pager {
    padding-bottom: 70px;
  }

  .source-ledger li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .source-ledger span {
    text-align: left;
  }

  .site-footer__brand {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}

@media print {
  @page {
    margin: 14mm;
  }

  body {
    background: #fff;
    color: #111;
    font-size: 10pt;
  }

  .session-hero--chapter {
    border-bottom: 1px solid #bbb;
    background: #fff;
    color: #111;
  }

  .session-hero--chapter .session-hero__inner {
    display: block;
    padding-block: 16px;
  }

  .session-hero--chapter h1,
  .session-hero--chapter .session-hero__session-title,
  .session-hero--chapter .session-hero__phase,
  .session-hero--chapter .breadcrumb,
  .session-hero--chapter .breadcrumb a {
    color: #111;
  }

  .session-hero--chapter .session-hero__mark {
    display: none;
  }

  .site-header,
  .hero__actions,
  .sources-hero .button,
  .registry-controls,
  .registry-status,
  .routes-section,
  .chapter-actions,
  .deck-launcher,
  .deck-dialog,
  .diagram-dialog,
  .session-diagram__hint,
  .site-footer,
  .skip-link {
    display: none !important;
  }

  .hero,
  .sources-hero {
    background: #fff !important;
    color: #111;
  }

  .hero {
    padding: 0 0 24px;
  }

  .sources-hero {
    padding: 0 0 24px;
  }

  .hero::before,
  .sources-hero::before {
    display: none;
  }

  .hero h1,
  .hero h1 span,
  .sources-hero h1,
  .sources-hero p,
  .hero__eyebrow,
  .hero__lead,
  .program-outcome,
  .program-outcome__title strong,
  .outcome-lines strong,
  .outcome-lines small,
  .outcome-lines__label {
    color: #111;
  }

  .hero__inner,
  .phase-register,
  .sources-hero__inner,
  .section {
    width: 100%;
  }

  .hero__inner {
    display: block;
  }

  .program-outcome,
  .program-docket,
  .phase-register a,
  .session-record,
  .module-record {
    break-inside: avoid;
    border: 1px solid #bbb;
    background: #fff !important;
    box-shadow: none;
  }

  .program-docket,
  .phase-register {
    margin-top: 18px;
  }

  .phase-register {
    grid-template-columns: repeat(3, 1fr);
  }

  .phase-register strong,
  .phase-register small,
  .phase-register span,
  .program-docket dt,
  .program-docket dd {
    color: #111;
  }

  .section {
    padding-block: 28px;
  }

  .session-register {
    display: block;
  }

  .module-register {
    display: block;
  }

  .phase-marker,
  .session-record,
  .module-record {
    margin-bottom: 10px;
  }

  .session-record {
    height: auto;
    min-height: 300px;
  }

  .module-record {
    min-height: 0;
  }

}

/* Service-led catalog and chapter pages */
.site-header {
  background: var(--c-white);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.section-kicker,
.chapter-header__label,
.implementation-guide__label {
  margin: 0 0 10px;
  color: var(--c-mid-navy);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-transform: uppercase;
}

.program-outcome--compact {
  display: flex;
  min-height: 360px;
  flex-direction: column;
  justify-content: center;
  background: var(--c-navy);
  box-shadow: var(--shadow-card);
}

.program-outcome--compact > p {
  margin: 0 0 12px;
  color: var(--c-hero-accent);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.program-outcome--compact h2 {
  max-width: 13ch;
  color: var(--c-white);
  font-size: clamp(1.8rem, 3.4vw, 2.7rem);
}

.program-outcome--compact ul {
  display: grid;
  margin: 28px 0 0;
  padding: 0;
  gap: 0;
  list-style: none;
}

.program-outcome--compact li {
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.88);
  padding: 13px 0 13px 21px;
}

.program-outcome--compact li::before {
  position: absolute;
  top: 1.38rem;
  left: 2px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-hero-accent);
  content: "";
}

.program-outcome__note {
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.78rem;
  line-height: 1.6;
}

.program-docket {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 32px;
  overflow: visible;
  border: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.program-docket div {
  padding: 14px 10px 4px;
}

.program-docket dd {
  font-size: 1.3rem;
  font-weight: 700;
}

.program-docket dt {
  margin-top: 5px;
  letter-spacing: 0.07em;
}

.audience-lanes,
.method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.audience-lanes article,
.method-grid article {
  border-top: 3px solid var(--c-rvap-blue);
  border-radius: var(--radius);
  background: var(--c-surface);
  padding: 26px;
}

.audience-lanes article:nth-child(2),
.method-grid article:nth-child(2) {
  border-top-color: var(--c-teal);
}

.audience-lanes article > span,
.method-grid article > span {
  color: var(--c-mid-navy);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.audience-lanes h3,
.method-grid h3 {
  margin-top: 12px;
  font-size: 1.35rem;
}

.audience-lanes p,
.method-grid p {
  margin: 12px 0 0;
  color: var(--c-ink-secondary);
}

.audience-lanes a {
  display: inline-block;
  margin-top: 18px;
  color: var(--c-mid-navy);
  font-weight: 700;
}

.method-section {
  border-block: 1px solid var(--c-line-soft);
  background: var(--c-surface);
}

.method-grid article {
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-rvap-blue);
  background: var(--c-white);
}

.method-grid article:nth-child(2) {
  border-top-color: var(--c-gold);
}

.governance-note {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  gap: 30px;
  margin-top: 28px;
  border-left: 3px solid var(--c-mid-navy);
  background: var(--c-white);
  padding: 22px 24px;
}

.governance-note p {
  margin: 0;
  color: var(--c-ink-secondary);
}

.tool-discovery {
  margin-top: 14px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-white);
  padding: 16px;
}

.tool-discovery__head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.tool-discovery__head h3 {
  font-size: 0.95rem;
}

.tool-discovery__head p {
  margin: 4px 0 0;
  color: var(--c-ink-muted);
  font-size: 0.82rem;
}

.tool-discovery__head a {
  flex: none;
  color: var(--c-mid-navy);
  font-size: 0.82rem;
  font-weight: 700;
}

.tool-filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr));
  min-width: 0;
  margin-top: 14px;
  gap: 8px;
  overflow-x: visible;
  padding: 2px;
}

.tool-filters button {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  align-items: center;
  width: 100%;
  min-height: 48px;
  gap: 9px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-white);
  color: var(--c-ink-secondary);
  padding: 7px 10px;
  text-align: left;
}

.tool-filters button span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.tool-filters button:first-child {
  grid-template-columns: minmax(0, 1fr) auto;
}

.tool-filters button[aria-pressed="true"] {
  border-color: var(--c-mid-navy);
  background: var(--c-mid-navy);
  color: var(--c-white);
}

.tool-filters img {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: var(--c-white);
  object-fit: contain;
  padding: 2px;
}

.tool-filters span {
  font-size: 0.76rem;
  font-weight: 600;
  line-height: 1.25;
}

.tool-filters small {
  color: inherit;
  font-family: var(--font-mono);
  font-size: 0.62rem;
}

html:not(.js) .route-filter-row,
html:not(.js) .tool-discovery,
html:not(.js) .registry-status,
html:not(.js) .map-controls {
  display: none;
}

.service-strip {
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 0;
  gap: 5px;
  list-style: none;
}

.service-strip li {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  flex: none;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius-sm);
  background: var(--c-white);
}

.service-strip img {
  width: 19px;
  height: 19px;
  object-fit: contain;
}

.session-record {
  grid-template-columns: 40px minmax(0, 1fr) 22px;
  grid-template-rows: auto auto auto;
  height: auto;
  min-height: 0;
}

.session-record .session-number {
  grid-column: 1;
  grid-row: 1;
}

.session-record .session-core {
  grid-column: 2;
  grid-row: 1;
}

.session-record .service-strip {
  grid-column: 1 / -1;
  grid-row: 2;
  overflow-x: auto;
  padding-bottom: 3px;
}

.session-record .session-duration {
  grid-column: 1 / 3;
  grid-row: 3;
}

.session-record .session-arrow {
  grid-column: 3;
  grid-row: 1;
}

.module-record {
  grid-template-columns: minmax(0, 1fr) 22px;
  grid-template-rows: auto auto auto;
  min-height: 0;
}

.module-record .session-core {
  grid-column: 1;
  grid-row: 1;
}

.module-record .service-strip {
  grid-column: 1 / -1;
  grid-row: 2;
  overflow-x: auto;
  padding-bottom: 3px;
}

.module-record .session-duration {
  grid-column: 1;
  grid-row: 3;
}

.module-record .session-arrow {
  grid-column: 2;
  grid-row: 1;
}

.optional-modules-section {
  background: var(--c-surface);
}

/* Horizontal chapter navigation and service facts */
.chapter-header {
  border-bottom: 1px solid var(--c-line);
  background: var(--c-white);
}

.chapter-header > .session-content-width {
  padding-block: 30px 26px;
}

.chapter-header .breadcrumb {
  margin-bottom: 14px;
  color: var(--c-ink-muted);
}

.chapter-header .breadcrumb a {
  color: var(--c-mid-navy);
}

.chapter-header h1 {
  max-width: 900px;
  font-size: clamp(1.9rem, 3.8vw, 3rem);
  line-height: 1.1;
}

.chapter-header__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 14px;
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.chapter-tabs {
  border-bottom: 1px solid var(--c-line);
  background: var(--c-white);
}

.chapter-tabs ol {
  display: flex;
  margin-block: 0;
  overflow-x: auto;
  padding-block: 0;
  list-style: none;
  scrollbar-color: var(--session-phase) var(--c-muted-surface);
}

.chapter-tabs li {
  flex: 0 0 auto;
}

.chapter-tabs a {
  display: flex;
  align-items: center;
  min-height: 52px;
  gap: 7px;
  border-bottom: 3px solid transparent;
  color: var(--c-ink-secondary);
  font-size: 0.76rem;
  font-weight: 600;
  line-height: 1.3;
  padding: 10px 14px 8px;
  text-decoration: none;
  white-space: nowrap;
}

.chapter-tabs a > span {
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.64rem;
}

.chapter-tabs a[aria-current="page"] {
  border-bottom-color: var(--session-phase);
  color: var(--c-navy);
}

.session-reading-layout {
  grid-template-areas:
    "article actions"
    "article services"
    "article facts";
  grid-template-columns: minmax(0, 1fr) 270px;
  grid-template-rows: auto auto 1fr;
  gap: 18px 32px;
  padding-block: 52px 64px;
}

.implementation-guide {
  grid-area: article;
}

.implementation-guide__label {
  margin-bottom: 7px;
}

.implementation-guide > h2:first-of-type {
  margin: 0 0 2rem;
}

.service-panel,
.facts-panel {
  min-width: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-white);
  padding: 19px;
}

.service-panel {
  grid-area: services;
}

.facts-panel {
  grid-area: facts;
  align-self: start;
}

.service-panel h2,
.facts-panel h2 {
  margin-bottom: 14px;
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.service-panel ul {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 0;
  list-style: none;
}

.service-panel li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  border-top: 1px solid var(--c-line-soft);
  padding: 10px 0;
}

.service-panel li:first-child {
  border-top: 0;
  padding-top: 0;
}

.service-panel img {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.service-panel li span {
  display: grid;
}

.service-panel strong {
  color: var(--c-navy);
  font-size: 0.78rem;
  line-height: 1.3;
}

.service-panel small {
  margin-top: 2px;
  color: var(--c-ink-muted);
  font-size: 0.68rem;
  line-height: 1.3;
}

.facts-panel dl {
  margin: 0;
}

.facts-panel dl > div {
  border-top: 1px solid var(--c-line-soft);
  padding: 10px 0;
}

.facts-panel dl > div:first-child {
  border-top: 0;
  padding-top: 0;
}

.facts-panel dt {
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.facts-panel dd {
  margin: 3px 0 0;
  color: var(--c-navy);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.4;
}

/* Service map */
.map-intro {
  border-bottom: 1px solid var(--c-line-soft);
  background: var(--c-surface);
}

.map-intro .section {
  padding-block: 58px;
}

.map-intro .breadcrumb {
  margin-bottom: 24px;
  color: var(--c-ink-muted);
}

.map-intro .breadcrumb a {
  color: var(--c-mid-navy);
}

.map-intro h1 {
  max-width: 18ch;
  font-size: clamp(2.3rem, 5vw, 4rem);
}

.map-intro p:last-child {
  max-width: 64ch;
  margin: 18px 0 0;
  color: var(--c-ink-secondary);
}

.map-controls {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.map-controls output {
  display: block;
  margin-top: 8px;
  color: var(--c-mid-navy);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
}

.service-map-table {
  overflow-x: auto;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.service-map-table table {
  width: 100%;
  min-width: 880px;
  border-collapse: collapse;
  background: var(--c-white);
  font-size: 0.82rem;
  line-height: 1.45;
}

.service-map-table th,
.service-map-table td {
  border-bottom: 1px solid var(--c-line);
  padding: 16px;
  text-align: left;
  vertical-align: top;
}

.service-map-table thead th {
  background: var(--c-navy);
  color: var(--c-white);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.service-map-table tbody tr:last-child > * {
  border-bottom: 0;
}

.service-map-table tbody th {
  width: 23%;
  font-weight: 400;
}

.service-map-table td {
  width: 26%;
}

.service-map-table td:last-child {
  width: 15%;
}

.service-map-table ul {
  display: grid;
  margin: 8px 0 0;
  padding: 0;
  gap: 6px;
  list-style: none;
}

.service-map-table a {
  color: var(--c-mid-navy);
  font-weight: 600;
}

.map-service {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  align-items: center;
  gap: 11px;
}

.map-service img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.map-service span {
  display: grid;
}

.map-service strong {
  color: var(--c-navy);
  font-size: 0.88rem;
}

.map-service small,
.map-none {
  color: var(--c-ink-muted);
  font-size: 0.72rem;
}

.map-count {
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .governance-note {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .session-reading-layout {
    grid-template-areas:
      "actions"
      "services"
      "article"
      "facts";
    grid-template-columns: minmax(0, 1fr);
  }

  .service-panel,
  .facts-panel {
    padding: 18px;
  }

  .service-panel ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 18px;
  }

  .map-controls {
    align-items: stretch;
    flex-direction: column;
  }

  .map-controls .registry-search {
    width: 100%;
  }
}

@media (max-width: 760px) {
  .audience-lanes,
  .method-grid {
    grid-template-columns: 1fr;
  }

  .tool-discovery__head {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .chapter-header > .session-content-width {
    padding-block: 24px 22px;
  }

  .chapter-tabs a {
    min-height: 48px;
  }
}

@media (max-width: 560px) {
  .program-docket {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .program-docket div:nth-child(3) {
    border-top: 0;
    border-left: 1px solid rgba(255, 255, 255, 0.16);
  }

  .program-outcome--compact {
    min-height: 0;
  }

  .session-record {
    grid-template-columns: 40px minmax(0, 1fr) 20px;
    min-height: 0;
  }

  .module-record {
    grid-template-columns: minmax(0, 1fr) 20px;
    min-height: 0;
  }

  .service-panel ul {
    grid-template-columns: 1fr;
  }
}

@media print {
  .tool-discovery,
  .route-filter-row,
  .chapter-tabs,
  .map-controls .registry-search {
    display: none !important;
  }

  .routes-section {
    display: block !important;
  }

  .chapter-header {
    border-bottom: 1px solid #bbb;
  }

  .chapter-header > .session-content-width {
    padding-block: 12px;
  }

  .chapter-header h1,
  .chapter-header .breadcrumb,
  .chapter-header .breadcrumb a {
    color: #111;
  }

  .session-reading-layout {
    display: grid;
    grid-template-areas:
      "services"
      "article"
      "facts";
    grid-template-columns: 1fr;
    width: 100%;
    padding-block: 20px;
  }

  .service-panel,
  .facts-panel,
  .implementation-guide {
    border: 1px solid #bbb;
    box-shadow: none;
  }

  .session-record,
  .module-record {
    height: auto;
    min-height: 0;
  }

  .service-map-table {
    overflow: visible;
  }

  .service-map-table table {
    min-width: 0;
    font-size: 8pt;
  }

  .service-map-table thead th {
    background: #fff;
    color: #111;
  }
}