@font-face {
  font-family: "Enby Gertrude";
  src: url("/assets/fonts/enby-gertrude/Enby_Gertrude_roman.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "BBB Open Sans";
  src: url("/assets/fonts/bbb-open-sans/BBB-OpenSans-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --font-display: "Enby Gertrude", Georgia, "Times New Roman", serif;
  --font-sans: "BBB Open Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", Menlo, monospace;
  --text-2xs: 0.6rem;
  --text-xs: 0.62rem;
  --text-sm: 0.72rem;
  --text-md: 0.82rem;
  --text-ui: 0.88rem;
  --text-base: 0.95rem;
  --leading-snug: 1.45;
  --tracking-caps: 0.06em;
  --tracking-caps-wide: 0.08em;
}

/* Book edition: paper (light) */
:root[data-theme="paper"] {
  --bg: #f7f4ef;
  --bg-muted: #efeae2;
  --text: #2a2622;
  --text-muted: #5c564e;
  --accent: #8b7355;
  --accent-soft: color-mix(in srgb, #8b7355 18%, var(--bg));
  --border: #d4cdc3;
  --code-bg: #ebe6dc;
  --link: #6b5638;
  --link-hover: #4a3d28;
}

/* Book edition: ink (dark) */
:root[data-theme="ink"] {
  --bg: #1c1b19;
  --bg-muted: #262522;
  --text: #e6e1d9;
  --text-muted: #b8b0a4;
  --accent: #c4a574;
  --accent-soft: color-mix(in srgb, #c4a574 15%, var(--bg));
  --border: #3d3a35;
  --code-bg: #252320;
  --link: #d4b88a;
  --link-hover: #e8d4b0;
}

#mesh-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

:root[data-theme="ink"] #mesh-canvas {
  opacity: 0.25;
}

:root[data-theme="paper"] #mesh-canvas {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  #mesh-canvas {
    display: none;
  }
}

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

html {
  font-size: 18px;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
}

a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--link) 35%, transparent);
  text-underline-offset: 0.15em;
  transition: color 0.15s;
}

a:hover {
  color: var(--link-hover);
}

.book {
  padding: 0 1.25rem 3rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  padding: 1.25rem 0 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  justify-items: center;
  align-items: center;
  min-height: 3.25rem;
}

.site-shell > .site-header {
  width: 100%;
  padding-left: 0;
  padding-right: 0;
}

.site-brand {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1;
  display: inline-flex;
  align-items: flex-start;
  gap: 0.45rem;
  line-height: 1.15;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.15rem;
  color: var(--text);
  letter-spacing: 0.02em;
  text-transform: none;
  text-decoration: none;
  flex-shrink: 0;
}

.site-brand:hover {
  color: var(--text);
}

.site-brand i {
  color: var(--accent);
  font-size: 0.95em;
  line-height: 1;
  transform: translateY(0.1rem);
}

.site-brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
}

.site-brand-title {
  line-height: 1.1;
}

.site-brand-tagline {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  text-transform: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem 1rem;
  width: 100%;
}

.site-nav-pages {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem 1rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--text-muted);
  letter-spacing: normal;
  text-transform: none;
}

.site-nav a:hover {
  color: var(--text);
}

.site-nav a.site-nav-link {
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  text-transform: none;
  transition: color 0.15s ease;
}

.site-nav a.site-nav-link.is-active,
.page-toc-link.is-active {
  color: var(--text);
  font-weight: 700;
}

.page-toc-link.is-active {
  border-left-color: var(--accent);
}

/* Page controls: language + theme */
.page-controls-anchor {
  position: fixed;
  top: 0.85rem;
  right: 1rem;
  z-index: 100;
}

@media (min-width: 56rem) {
  .page-controls-anchor {
    padding: 0.85rem;
    margin: -0.85rem;
  }
}

.page-controls {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.page-controls.is-auto-hidden {
  opacity: 0;
  transform: translateY(-0.35rem);
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-controls {
    transition: none;
  }

  .page-controls.is-auto-hidden {
    transform: none;
  }
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 0.1rem;
  padding: 0.12rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-muted);
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--text-muted);
  padding: 0.18rem 0.42rem;
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: var(--tracking-caps);
  line-height: 1.2;
  transition: color 0.15s ease, background 0.15s ease;
}

.lang-btn.is-active {
  background: var(--accent-soft);
  color: var(--accent);
}

.lang-btn.is-unavailable,
.lang-btn:disabled {
  opacity: 0.32;
  color: var(--text-muted);
  cursor: not-allowed;
}

.lang-btn.is-unavailable:hover,
.lang-btn:disabled:hover {
  color: var(--text-muted);
  background: transparent;
}

.lang-btn:hover:not(.is-active):not(:disabled):not(.is-unavailable) {
  color: var(--text);
}

.lang-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.theme-switch {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.theme-switch-track {
  position: relative;
  display: block;
  width: 2.25rem;
  height: 1.25rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-muted);
  transition: background 0.15s ease, border-color 0.15s ease;
}

.theme-switch-track::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: calc(1.25rem - 6px);
  height: calc(1.25rem - 6px);
  border-radius: 50%;
  background: var(--text-muted);
  transition: transform 0.15s ease, background 0.15s ease;
}

.theme-switch-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.55rem;
  line-height: 1;
  color: var(--text-muted);
  pointer-events: none;
  transition: color 0.15s ease, opacity 0.15s ease;
}

.theme-switch-icon--light {
  left: 0.35rem;
}

.theme-switch-icon--dark {
  right: 0.35rem;
  opacity: 0.45;
}

.theme-switch-input:checked + .theme-switch-track {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.theme-switch-input:checked + .theme-switch-track::after {
  transform: translateX(calc(2.25rem - 1.25rem));
  background: var(--accent);
}

.theme-switch-input:checked + .theme-switch-track .theme-switch-icon--light {
  opacity: 0.45;
}

.theme-switch-input:checked + .theme-switch-track .theme-switch-icon--dark {
  opacity: 1;
  color: var(--accent);
}

.theme-switch-input:focus-visible + .theme-switch-track {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-switch:hover .theme-switch-track {
  border-color: var(--accent);
}

.title-page {
  padding: 2.5rem 0 2rem;
  margin-bottom: 1rem;
}

.title-page h1 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 400;
  margin: 0 0 0.5rem;
  letter-spacing: 0.03em;
  line-height: 1.2;
}

.title-page .subtitle {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.title-page .subtitle a {
  color: var(--link);
}

.title-page .subtitle a:hover {
  color: var(--link-hover);
}

.book-body section {
  margin-bottom: 2rem;
  scroll-margin-top: 5rem;
}

.book-body section:last-child {
  margin-bottom: 0;
}

.section-break {
  margin: 2.25rem auto;
  width: 4rem;
  position: relative;
}

.section-break::before {
  content: "· · ·";
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.35em;
}

h1 {
  font-family: var(--font-display);
}

h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 400;
  margin: 0 0 0.85rem;
  color: var(--text);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.heading-icon {
  color: var(--accent);
  font-size: 0.85em;
  flex-shrink: 0;
  line-height: 1;
}

h3 {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 400;
  margin: 1.5rem 0 0.5rem;
  color: var(--accent);
}

h4 {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--accent);
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin: 0 0 1rem;
}

p {
  margin: 0 0 1rem;
  color: var(--text);
}

ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.35rem;
}

li {
  margin-bottom: 0.4rem;
}

li::marker {
  color: var(--accent);
}

.callout {
  padding: 0.65rem 0.85rem;
  margin: 1.25rem 0;
  background-color: var(--bg-muted);
  border: 1px solid var(--border);
  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: 1.5;
}

aside.callout > span,
.callout p,
.error-suggestions {
  margin: 0;
  font-size: inherit;
  line-height: inherit;
}

aside.callout > span {
  flex: 1;
  min-width: 0;
}

.callout.notice {
  border-left-color: var(--accent);
}

.callout strong {
  flex-shrink: 0;
  color: var(--accent);
  font-size: inherit;
  line-height: inherit;
  letter-spacing: 0;
  text-transform: none;
}

.callout strong i {
  font-size: 0.9em;
  line-height: 1;
}

/* Repeater CLI: click-to-copy list */
.cli-ok-notice {
  margin-top: 1rem;
}

.cli-ok-notice--top {
  margin: 0.75rem 0 0.5rem;
}

.cli-copy-hint-global {
  margin: 0.75rem 0 0.5rem;
  font-size: var(--text-ui);
  color: var(--text-muted);
}

.cli-lines {
  list-style: none;
  margin: 0.5rem 0 1.25rem;
  padding: 0.35rem 0;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.55;
  break-inside: avoid;
}

.cli-line {
  display: flex;
  align-items: stretch;
  margin: 0;
  padding: 0;
}

.cli-line-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 0;
  width: auto;
  margin: 0;
  padding: 0.2rem 0.75rem 0.2rem 0.85rem;
  border: none;
  border-left: 2px solid transparent;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease;
}

.cli-line-btn:hover,
.cli-line-btn:focus-visible {
  background: color-mix(in srgb, var(--accent) 8%, var(--code-bg));
  border-left-color: var(--accent);
  outline: none;
}

.cli-line-btn code {
  flex: 1;
  min-width: 0;
  color: var(--text-muted);
  font-size: inherit;
  white-space: pre-wrap;
  word-break: break-word;
}

.cli-line-feedback {
  flex-shrink: 0;
  min-width: 3.5em;
  font-size: 0.85em;
  color: var(--accent);
  opacity: 1;
  transition: opacity 0.4s ease;
}

.cli-line-feedback.is-fading {
  opacity: 0;
}

.cli-line-btn.is-copied {
  border-left-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, var(--code-bg));
  transition: background 0.5s ease, border-left-color 0.5s ease;
}

.cli-line-btn.is-copied.is-copied-dimmed {
  border-left-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  background: color-mix(in srgb, var(--accent) 5%, var(--code-bg));
}

code {
  font-family: var(--font-mono);
  font-size: 0.82em;
}

.cli-copy-btn {
  display: inline;
  margin: 0;
  padding: 0.08em 0.35em;
  border: none;
  border-radius: 2px;
  background: var(--code-bg);
  font: inherit;
  color: inherit;
  line-height: inherit;
  cursor: pointer;
  vertical-align: baseline;
  transition: background 0.12s ease, box-shadow 0.12s ease;
}

.cli-copy-btn code {
  font-size: 0.92em;
  color: var(--text);
}

.cli-copy-btn:hover,
.cli-copy-btn:focus-visible {
  background: color-mix(in srgb, var(--accent) 12%, var(--code-bg));
  outline: none;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 25%, transparent);
}

.cli-copy-feedback {
  font-family: var(--font-mono);
  font-size: 0.72em;
  color: var(--accent);
  margin-left: 0.2em;
  opacity: 1;
  transition: opacity 0.25s ease;
}

.cli-copy-feedback.is-fading {
  opacity: 0;
}

.cli-copy-btn.is-copied {
  background: color-mix(in srgb, var(--accent) 10%, var(--code-bg));
}

.cli-copy-btn.is-copied.is-copied-dimmed {
  background: color-mix(in srgb, var(--accent) 5%, var(--code-bg));
}

.device-grid {
  display: grid;
  gap: 1rem;
  margin: 1.25rem 0;
}

.device-roles-legend {
  margin: 1.25rem 0 0;
  padding: 1rem 1.1rem;
  background: var(--bg-muted);
  border: 1px solid var(--border);
}

.device-roles-legend--secondary {
  margin-top: 1.5rem;
  background: transparent;
  border-style: dashed;
}

.node-roles-primary {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 0.75rem 0 0;
}

@media (min-width: 640px) {
  .node-roles-primary {
    grid-template-columns: repeat(2, 1fr);
    align-items: stretch;
  }
}


.node-role-icons {
  gap: 0.65rem;
  margin-bottom: 0.75rem;
  color: var(--accent);
  font-size: 2rem;
  line-height: 1;
}

.node-role-icons .fa-plus {
  font-size: 0.55em;
  opacity: 0.65;
}

.node-role-icons--single {
  font-size: 2.35rem;
}

.node-role-card h4 {
  display: block;
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--text);
}

.node-role-card p {
  margin: 0 0 0.5rem;
  line-height: var(--leading-snug);
}

.node-role-card p:last-child {
  margin-bottom: 0;
}

.node-role-bridge {
  padding-bottom: 0.5rem;
  margin-bottom: 0.5rem !important;
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem !important;
}

.node-role-card ul {
  margin: 0.35rem 0 0;
  padding-left: 1.1rem;
  font-size: var(--text-md);
  line-height: var(--leading-snug);
  color: var(--text-muted);
}

.node-role-card li + li {
  margin-top: 0.35rem;
}

.device-roles-heading {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  color: var(--accent);
  line-height: 1.5;
}

.device-roles-label {
  margin: 0 0 0.15rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-sm);
  color: var(--accent);
  text-transform: none;
  letter-spacing: normal;
  line-height: 1.35;
}

.device-card-footer .device-roles-text {
  margin: 0;
  font-size: 0.68rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.device-roles-meta {
  margin: 0;
  padding: 0;
  border-top: none;
}

.device-item {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-width: 0;
}

.device-card-footer {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0 0.15rem;
}

.device-card-footer .links {
  margin-top: 0;
  padding-top: 0;
  font-size: 0.85rem;
}

.device-price {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.device-promo {
  margin: 0 0 0.35rem;
  font-size: var(--text-md);
  color: var(--text-muted);
}

.device-promo code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
}

.device-roles-key {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.device-roles-key li {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  font-size: var(--text-md);
  line-height: var(--leading-snug);
  color: var(--text-muted);
}

.device-role-key {
  flex-shrink: 0;
  width: 1.15rem;
  color: var(--accent);
  line-height: var(--leading-snug);
}

.device-role-key i {
  font-size: var(--text-base);
}

.device-roles-key strong {
  font-weight: 400;
  color: var(--text);
}

@media (min-width: 640px) {
  .device-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.device-card {
  position: relative;
  padding: 1rem 1.1rem;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  break-inside: avoid;
}

.device-roles {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.1rem;
}

.device-roles i {
  color: var(--accent);
  font-size: 1rem;
  line-height: 1;
}

.device-card h3,
.device-card h4 {
  margin: 0;
  padding-right: 5.5rem;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text);
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  width: fit-content;
  background-color: color-mix(in srgb, var(--accent) 14%, var(--bg-muted));
}

.device-badges {
  position: absolute;
  top: 0.85rem;
  right: 1rem;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
  max-width: 48%;
}

.device-card p {
  font-size: 0.92rem;
  margin: 0;
  color: var(--text-muted);
}

.device-card .links {
  margin-top: auto;
  padding-top: 0.5rem;
  font-size: 0.85rem;
}

.devices-price-footnote {
  margin: -0.5rem 0 0.25rem;
}

.link-card {
  position: relative;
  display: block;
  padding: 0.85rem 1rem;
  padding-right: 3.25rem;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  text-decoration: none;
  break-inside: avoid;
  transition: border-color 0.15s;
}

.link-card:hover {
  border-color: var(--accent);
}

.link-card strong {
  display: block;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin-bottom: 0.25rem;
}

.link-card-desc {
  display: block;
}

.link-lang {
  position: absolute;
  top: 0.85rem;
  right: 1rem;
  opacity: 0.75;
  line-height: 1.2;
}

.links-intro {
  margin: 0 0 1rem;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.faq-item {
  break-inside: avoid;
}

.faq-item:first-child {
  margin-top: 1.25rem;
}

.faq-item + .faq-item {
  margin-top: 1.5rem;
}

.faq-question {
  display: block;
  position: relative;
  padding: 0 1.25rem 0 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  color: var(--accent);
  font-weight: 400;
  letter-spacing: 0.01em;
  user-select: none;
  transition: color 0.15s;
}

.faq-question:hover,
.faq-question:focus-visible {
  color: var(--text);
}

.faq-question::-webkit-details-marker,
.faq-question::marker {
  display: none;
}

.faq-question::after {
  content: "";
  position: absolute;
  right: 0.15rem;
  top: 0.45em;
  width: 0.4em;
  height: 0.4em;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.25s ease;
}

.faq-item[open] > .faq-question::after {
  transform: rotate(225deg);
  top: 0.55em;
}

.faq-answer {
  margin: 0;
  padding: 0.4rem 0 0;
  color: var(--text-muted);
  overflow: hidden;
  transition: height 0.25s ease;
  position: relative;
}

.faq-copy-link {
  float: right;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0.1rem 0 0.35rem 0.75rem;
  padding: 0.2rem 0.35rem;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
  line-height: 1;
  opacity: 0.7;
  transition: color 0.15s, opacity 0.15s;
}

.faq-copy-link:hover,
.faq-copy-link:focus-visible {
  color: var(--accent);
  opacity: 1;
}

.faq-copy-link.is-copied {
  color: var(--accent);
  opacity: 1;
}

.faq-copy-link__feedback {
  font-size: 0.75rem;
  color: var(--accent);
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  .faq-question::after,
  .faq-answer {
    transition: none;
  }
}

.faq-answer ol,
.faq-answer ul {
  margin: 0.5rem 0 0.75rem;
  padding-left: 1.35rem;
}

.faq-answer li + li {
  margin-top: 0.35rem;
}

.book-footer {
  margin-top: 2.5rem;
  padding: 1rem 0 0;
  border-top: 1px solid var(--border);
  font-size: var(--text-sm);
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  letter-spacing: 0.04em;
}

.book-footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: var(--tracking-caps);
}

.footer-sitemap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: 1.25rem 2rem;
  margin-top: 0.5rem;
  text-transform: none;
  letter-spacing: normal;
}

.footer-sitemap__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
}

.footer-sitemap__list {
  margin: 0;
  padding: 0;
  list-style: none;
  line-height: 1.55;
}

.footer-sitemap__list a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-sitemap__list a:hover,
.footer-sitemap__list a:focus-visible {
  color: var(--accent);
  text-decoration: underline;
}

.footer-sitemap__list a[aria-current="page"] {
  color: var(--accent);
  font-weight: 600;
}

.site-revision {
  display: none;
  position: fixed;
  right: 0.65rem;
  bottom: 0.45rem;
  z-index: 1;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  line-height: 1;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  opacity: 0.55;
  pointer-events: none;
  user-select: none;
}

@media (min-width: 56rem) {
  .site-revision {
    display: block;
  }
}

.resources-sources-list,
.resources-credits-list {
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
  line-height: 1.55;
}

.resources-sources-list li + li,
.resources-credits-list li + li {
  margin-top: 0.5rem;
}

.lexique-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.lexique-entry {
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.lexique-entry:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.lexique-entry__term {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--accent);
}

.lexique-entry__def {
  margin: 0;
  line-height: 1.55;
}

.lexique-loading {
  color: var(--text-muted);
  font-style: italic;
}

.lexique-page .page-toc {
  display: none;
}

.section-footnote {
  margin-top: 1.25rem;
  font-size: 0.68rem;
  color: var(--text-muted);
  line-height: 1.5;
}

#settings > h2,
#compagnon > h2,
#mise-en-service > h2,
#regions > h2 {
  margin-bottom: 0.65rem;
}

.guide-steps {
  margin: 0.75rem 0 1rem;
  padding-left: 1.25rem;
  line-height: 1.55;
}

.guide-steps li + li {
  margin-top: 0.5rem;
}

.companion-identity-callout span p + p {
  margin-top: 0.65rem;
}

.companion-settings-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 1rem 0 0;
}

@media (min-width: 640px) {
  .companion-settings-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .companion-settings-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}


.companion-setting-card h4 {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 400;
  margin: 0 0 0.5rem;
}

.companion-setting-card p {
  margin: 0;
  line-height: var(--leading-snug);
}

.companion-settings-optional {
  margin: 1rem 0;
}

.companion-setting-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.68rem;
  overflow: hidden;
}

.companion-setting-row {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.45rem;
  min-height: 0;
}

.companion-setting-row:last-child {
  border-bottom: none;
}

.companion-setting-row.is-on {
  justify-content: flex-start;
}

.companion-setting-row.has-value {
  justify-content: space-between;
  gap: 0.5rem;
}

.companion-setting-check {
  flex-shrink: 0;
  width: 0.85rem;
  font-size: 0.75rem;
  line-height: 1;
  color: var(--accent);
}

.companion-setting-label {
  font-size: inherit;
  line-height: 1.25;
  color: var(--text);
}

.companion-setting-value {
  flex-shrink: 0;
  padding: 0.1rem 0.35rem;
  font-size: 0.65rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  color: var(--text-muted);
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: 0.25rem;
}

.companion-setting-note {
  margin: 0.45rem 0 0;
  font-size: 0.68rem;
  line-height: 1.35;
  color: var(--text-muted);
}

.companion-setting-card .companion-setting-list + .companion-setting-note,
.companion-setting-card p + .companion-setting-list {
  margin-top: 0.65rem;
}

.privacy-compare__card {
  border-left-width: 3px;
  border-radius: 2px;
}

@media (min-width: 640px) {
  .identity-event-status.privacy-compare {
    grid-template-columns: repeat(3, 1fr);
  }
}

.identity-compare .privacy-compare__title i,
.key-compare .privacy-compare__title i,
.identity-event-status .privacy-compare__title i {
  margin-right: 0.35rem;
  opacity: 0.85;
}

.privacy-compare__head {
  margin-bottom: 0.5rem;
}

.privacy-compare__title {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--text);
}

.privacy-compare__badge {
  display: inline-block;
}

.privacy-compare__lead {
  margin: 0 0 0.65rem;
}

.privacy-compare__list {
  margin: 0;
  padding-left: 1.1rem;
}

.privacy-compare__list li + li {
  margin-top: 0.35rem;
}

.privacy-scenarios {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 1rem 0 1.25rem;
}

@media (min-width: 640px) {
  .privacy-scenarios {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .privacy-scenarios {
    grid-template-columns: repeat(3, 1fr);
  }
}


.privacy-scenario h4 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 400;
  color: var(--text);
}

.privacy-scenario__rows {
  margin: 0;
}

.privacy-scenario__row {
  margin: 0;
  padding: 0.5rem 0;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  line-height: 1.4;
}

.privacy-scenario__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.privacy-scenario__row dt {
  margin: 0 0 0.2rem;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 400;
}

.privacy-scenario__row dd {
  margin: 0;
  color: var(--text-muted);
}

.privacy-sample {
  display: inline-block;
}

.privacy-sample--plain {
  color: var(--text);
}

.privacy-sample--cipher {
  color: var(--text-muted);
}

.privacy-sample--cipher code {
  font-size: 0.78em;
  word-break: break-all;
}

#compagnon h3,
#meshcore h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  color: var(--accent);
}

#settings {
  overflow: visible;
}

.settings-credit {
  margin: 0 0 1.25rem;
  font-size: var(--text-md);
  color: var(--text-muted);
  line-height: 1.5;
}

.role-tips {
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
}

.commissioning-summary {
  margin: 1rem 0 1.5rem;
}

.commissioning-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg-muted);
}

.commissioning-step {
  display: flex;
  gap: 0.85rem;
  padding: 0.85rem 1rem;
  border-top: 1px solid var(--border);
}

.commissioning-step:first-child {
  border-top: 0;
}

.commissioning-step__icon {
  flex-shrink: 0;
  width: 1.65rem;
  padding-top: 0.1rem;
  font-size: 1rem;
  color: var(--accent);
}

.commissioning-step__body,
.lexicon-panel-body {
  flex: 1;
  min-width: 0;
}

.commissioning-step__title {
  margin: 0 0 0.35rem;
}

.commissioning-step__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text);
}

.commissioning-step__text + .commissioning-config-list,
.commissioning-config-list + .commissioning-step__text {
  margin-top: 0.55rem;
}

.commissioning-config-list {
  font-size: 0.85rem;
}

.commissioning-step__details {
  margin-top: 0.55rem;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.commissioning-step__details summary {
  cursor: pointer;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--link);
}

.commissioning-step__details summary:hover,
.commissioning-step__details summary:focus-visible {
  color: var(--link-hover);
}

.commissioning-step__details p {
  margin: 0.5rem 0 0;
}

.commissioning-step__details p + p {
  margin-top: 0.45rem;
}

.join-steps {
  counter-reset: join-step;
}

.join-steps > .commissioning-step {
  counter-increment: join-step;
}

.join-steps > .commissioning-step > .commissioning-step__icon {
  width: 2rem;
}

.join-steps > .commissioning-step > .commissioning-step__icon::before {
  content: counter(join-step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1;
  font-family: var(--font-mono, "IBM Plex Mono", monospace);
}

.companion-setting-row.is-off {
  justify-content: flex-start;
  opacity: 0.85;
}

.companion-setting-row.is-off .companion-setting-check {
  color: var(--text-muted);
}

.role-tips li {
  padding: 0.65rem 0;
  border-top: 1px solid var(--border);
  font-size: var(--text-ui);
  line-height: var(--leading-snug);
  color: var(--text-muted);
}

.role-tips li:first-child {
  border-top: 0;
  padding-top: 0.25rem;
}

.role-tips strong {
  display: block;
  margin-bottom: 0.2rem;
  font-weight: 400;
  color: var(--accent);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
}

details + .role-tips li:first-child {
  border-top: 1px solid var(--border);
  padding-top: 0.65rem;
}

.role-card {
  margin-bottom: 1.75rem;
  padding: 1.1rem 1.15rem;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  break-inside: avoid;
}

.role-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.role-cli {
  margin: 0.75rem 0;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--code-bg);
}

.role-cli-summary {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 2.75rem;
  padding: 0.65rem 0.85rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.92rem;
  color: var(--text);
  letter-spacing: 0.01em;
  user-select: none;
}

.role-cli summary::-webkit-details-marker {
  display: none;
}

.role-cli-chevron {
  color: var(--accent);
  font-size: 0.85em;
  flex-shrink: 0;
  transition: transform 0.15s ease;
}

.role-cli[open] .role-cli-chevron {
  transform: rotate(90deg);
}

.role-cli-summary:hover {
  color: var(--accent);
}

.role-cli-summary:hover .role-cli-chevron {
  color: var(--link-hover);
}

.role-cli .cli-panel {
  padding: 0 0 0.5rem;
  border-top: 1px solid var(--border);
}

.role-cli .cli-copy-hint-global {
  margin: 0.65rem 0.75rem 0.35rem;
}

.role-cli .cli-lines {
  margin: 0 0 0.5rem;
  border: none;
  border-radius: 0;
  background-color: var(--bg-muted);
}

.region-cli-tabs {
  margin: 0.75rem 0 0.35rem;
}

.region-cli-tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.35rem;
  margin: 0 0 0.65rem;
  padding: 0;
  border-bottom: 1px solid var(--border);
}

.region-cli-tab {
  appearance: none;
  margin: 0;
  padding: 0.4rem 0.55rem 0.5rem;
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.92rem;
  cursor: pointer;
  margin-bottom: -1px;
}

.region-cli-tab:hover {
  color: var(--text);
}

.region-cli-tab[aria-selected="true"] {
  color: var(--text);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.region-cli-tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.region-cli-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(10.5rem, 36%);
  grid-template-areas:
    "hint hint"
    "lines tree";
  gap: 0.35rem 1rem;
  align-items: start;
  margin: 0;
}

.region-cli-panel[hidden] {
  display: none;
}

.region-cli-panel .region-tree {
  grid-area: tree;
  margin: 0;
  align-self: start;
}

.region-cli-panel .cli-copy-hint-global {
  grid-area: hint;
  margin: 0;
}

.region-cli-panel .cli-lines {
  grid-area: lines;
  margin: 0 0 0.5rem;
  align-self: start;
}

@media (max-width: 40rem) {
  .region-cli-panel {
    grid-template-columns: 1fr;
    grid-template-areas:
      "hint"
      "lines"
      "tree";
    gap: 0.35rem;
  }

  .region-cli-panel .region-tree {
    margin: 0.35rem 0 0;
  }
}

/* Graphical region def tree (per tab) */
.region-tree {
  margin: 0 0 0.85rem;
  padding: 0;
  background: none;
  border-left: none;
}

.region-tree__list,
.region-tree__list ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.region-tree__list ul {
  margin-left: 0.45rem;
  padding-left: 0.45rem;
  border-left: 1px solid var(--border);
}

.region-tree__list li {
  position: relative;
  margin: 0.06rem 0;
  padding: 0;
}

.region-tree__list ul > li::before {
  content: "";
  position: absolute;
  left: -0.45rem;
  top: 0.6em;
  width: 0.35rem;
  border-top: 1px solid var(--border);
}

.region-tree__node {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.15rem 0.25rem;
  font-size: 0.7rem;
  line-height: 1.2;
}

.region-tree__node code {
  font-size: 0.88em;
}

.region-tree__name {
  color: var(--text-muted);
  font-size: 0.88em;
}

.region-tree__home {
  padding: 0.05rem 0.25rem;
  margin: -0.05rem -0.25rem;
  border-radius: 0.2rem;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}

.region-tree__home code {
  color: var(--accent);
  font-weight: 600;
}

.region-tree__mark {
  font-size: 0.75em;
  color: var(--accent);
}

.region-tree__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.85rem;
  margin: 0.4rem 0 0;
  padding-top: 0.35rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.72rem;
}

.region-tree__legend i {
  margin-right: 0.25rem;
  color: var(--accent);
}

@media (max-width: 480px) {
  html {
    font-size: 17px;
    scroll-padding-top: 8rem;
  }

  .book-body section {
    scroll-margin-top: 8rem;
  }

  .book {
    padding: 0 1rem 2rem;
  }

  .title-page h1 {
    font-size: 2rem;
  }

  .site-header {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: sticky;
    justify-items: stretch;
    min-height: 0;
    gap: 0.75rem;
    padding-top: 1rem;
  }

  .site-brand {
    position: static;
    transform: none;
    align-self: flex-start;
  }

  .site-nav {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    max-width: none;
  }

  .site-nav-pages {
    justify-content: center;
  }
}

@media print {
  @page {
    margin: 2cm;
  }

  html {
    font-size: 12pt;
  }

  :root {
    --bg: #fff;
    --bg-muted: #fff;
    --text: #000;
    --text-muted: #000;
    --accent: #000;
    --accent-soft: transparent;
    --border: #000;
    --code-bg: #fff;
    --link: #000;
    --link-hover: #000;
  }

  body {
    background: #fff !important;
    color: #000 !important;
    -webkit-print-color-adjust: economy;
    print-color-adjust: economy;
  }

  /* UI masquée */
  #mesh-canvas,
  .lexicon-panel,
  .page-controls,
  .page-toc,
  .site-header,
  .site-nav,
  .site-revision,
  .book-footer,
  .section-break,
  .cli-copy-hint-global,
  .cli-line-feedback,
  .cli-copy-feedback,
  .role-cli-chevron,
  .faq-question::-webkit-details-marker,
  .faq-question::marker {
    display: none !important;
  }

  a,
  a:link,
  a:visited,
  a:hover,
  a:active {
    color: #000 !important;
    text-decoration: underline;
    text-decoration-color: #000 !important;
    -webkit-text-fill-color: #000 !important;
  }

  .link-card,
  .link-card strong,
  .link-card-desc,
  .link-lang,
  .footer-sitemap__list a,
  .guide-setup-link a {
    color: #000 !important;
    text-decoration-color: #000 !important;
    -webkit-text-fill-color: #000 !important;
  }

  .link-card {
    text-decoration: none;
  }

  i,
  .heading-icon,
  .fa-solid,
  .fa-brands,
  .guide-path-arrow i,
  .guide-path-compare__divider i,
  .callout strong i,
  .device-role-key i,
  .node-role-icons i {
    color: #000 !important;
    -webkit-text-fill-color: #000 !important;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.75em;
    color: #000;
    word-break: break-all;
  }

  .link-card::after {
    content: none !important;
  }

  /* Contenu déplié */
  .faq-item:not([open]) .faq-answer {
    display: block !important;
    height: auto !important;
    overflow: visible !important;
  }

  .faq-question::after {
    display: none !important;
  }

  .faq-question {
    display: block;
    font-weight: 400;
    list-style: none;
    padding: 0.5rem 0 0.25rem;
    border-top: 1px solid #000;
    color: #000;
  }

  .role-cli summary,
  .role-cli .role-cli-summary {
    display: none !important;
  }

  .role-cli .cli-panel {
    display: block !important;
    border-top: none;
  }

  details.role-cli {
    border: none;
    background: transparent;
  }

  /* Mise en page monochrome */
  .callout,
  .device-card,
  .link-card,
  .role-card,
  .node-role-card,
  .guide-limits-col,
  .device-roles-legend,
  .privacy-compare__card,
  .companion-setting-card,
  .cli-panel,
  .devices-panel,
  .guide-mode-card {
    background: #fff !important;
    border: 1px solid #000;
    box-shadow: none;
    color: #000;
  }

  .callout {
    border: none !important;
    border-left: none !important;
    padding-left: 0;
  }

  .callout strong,
  .guide-path-compare__badge,
  .guide-path-compare__card--solution .guide-path-compare__badge,
  .guide-limits-col h3,
  .guide-limits-col h3 i,
  .node-role-card,
  .device-role-key,
  .guide-mode-num,
  .guide-mode-card h4,
  .guide-mode-card p,
  strong,
  em {
    color: #000 !important;
  }

  li::marker,
  ::marker {
    color: #000 !important;
  }

  code,
  pre,
  .role-cli,
  .cli-line-btn {
    background: #fff !important;
    color: #000 !important;
    border-color: #000;
  }

  .badge,
  .link-lang {
    background: #fff !important;
    color: #000 !important;
    border: 1px solid #000;
  }

  h1,
  h2,
  h3,
  h4,
  p,
  li,
  span,
  .subtitle,
  .section-footnote,
  .links-intro,
  .settings-credit,
  .cli-copy-hint-global {
    color: #000 !important;
  }

  .glossary-term {
    border-bottom: none !important;
    color: #000 !important;
    outline: none !important;
  }

  /* Schémas de chemin : sans cadres */
  .guide-path-compare__card,
  .guide-path-compare__card--problem,
  .guide-path-compare__card--solution {
    background: #fff !important;
    border: none !important;
    padding: 0.5rem 0 !important;
  }

  .guide-path-compare__badge {
    background: transparent !important;
    border: none !important;
    color: #000 !important;
    padding: 0;
  }

  .guide-path-compare__title {
    color: #000 !important;
  }

  .guide-path-node,
  .guide-path-node--muted,
  .guide-path-node--accent,
  .guide-path-node--person,
  .guide-path-node--person.guide-path-node--muted,
  .guide-path-node--person.guide-path-node--accent {
    background: #fff !important;
    color: #000 !important;
    border: none !important;
    border-radius: 0;
    padding: 0.2rem;
  }

  .guide-path-arrow,
  .guide-path-compare__divider {
    color: #000 !important;
  }

  /* Manières de communiquer */
  .guide-mode-card {
    border: none !important;
    background: #fff !important;
  }

  .guide-mode-num {
    color: #000 !important;
    border-color: #000 !important;
    background: #fff !important;
  }

  .node-role-card {
    border: none !important;
    border-left: none !important;
  }

  .guide-limits-col {
    border: none !important;
    background: #fff !important;
  }

  .privacy-compare__card--activity,
  .privacy-compare__card--content,
  .privacy-compare__card--civil,
  .privacy-compare__card--radio,
  .privacy-compare__card--private,
  .privacy-compare__card--public,
  .privacy-compare__badge,
  .privacy-compare__badge--var,
  .privacy-compare__lead {
    background: #fff !important;
    color: #000 !important;
    border-color: #000 !important;
  }

  .device-card,
  .link-card,
  .cli-lines,
  .role-cli,
  .role-card,
  .faq-item,
  .callout,
  .devices-panel,
  .node-role-card {
    break-inside: avoid;
  }
}

/* Guide page: Découvrir & Comprendre */
body.guide-page .site-shell > .book {
  max-width: 42rem;
}

@media (min-width: 56rem) {
  body.guide-page .site-shell {
    grid-template-columns: 1fr minmax(0, 42rem) 1fr;
  }

  body.guide-page .site-shell > .book {
    max-width: none;
  }
}

.guide-limits-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.25rem 0;
}

.guide-limits-col {
  border-radius: 2px;
}

.guide-limits-col h3 {
  font-size: var(--text-base);
  margin: 0 0 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.guide-limits-col h3 i {
  color: var(--accent);
  font-size: 0.85em;
}

.guide-limits-col ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: var(--text-ui);
}

.guide-limits-col li {
  margin-bottom: 0.35rem;
}

.habits-callout {
  border-left-width: 4px;
  border-left-color: var(--accent);
  background-color: color-mix(in srgb, var(--accent) 14%, var(--bg-muted));
}

.guide-setup-link {
  margin: 1.25rem 0 0;
  font-size: 0.92rem;
}

.guide-brussels {
  margin-top: 1rem;
}

.guide-path-compare {
  margin: 1rem 0 1.25rem;
}

.guide-path-compare__card {
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-radius: 2px;
}

.guide-path-compare__card + .guide-path-compare__card {
  margin-top: 0.75rem;
}

.guide-path-compare__head {
  margin-bottom: 0.75rem;
}

.guide-path-compare__badge {
  display: block;
  margin-bottom: 0.25rem;
}

.guide-path-compare__card--solution .guide-path-compare__badge {
  color: var(--accent);
}

.guide-path-compare__title {
  margin: 0;
  font-size: var(--text-ui);
  font-weight: 600;
  line-height: 1.35;
  color: var(--text);
}

.guide-path-compare__divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.65rem 0;
}

.guide-path-compare__divider i {
  font-size: 0.9rem;
}

.guide-path-track {
  flex-wrap: wrap;
  width: 100%;
  gap: 0.15rem 0.1rem;
}

.guide-path-track--detour {
  width: 100%;
}

.guide-path-node {
  display: inline-flex;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 0.2rem;
  min-width: 2.75rem;
  max-width: 4.25rem;
  padding: 0.35rem 0.2rem;
  font-size: 0.65rem;
  line-height: 1.2;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 2px;
}

.guide-path-node--person {
  background: transparent;
  border: none;
  border-radius: 0;
}

.guide-path-node i {
  font-size: var(--text-base);
  color: var(--text-muted);
}

.guide-path-node--muted {
  background-color: var(--bg-muted);
}

.guide-path-node--person.guide-path-node--muted {
  background: transparent;
}

.guide-path-node--accent {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  background-color: color-mix(in srgb, var(--accent) 14%, var(--bg-muted));
}

.guide-path-node--person.guide-path-node--accent {
  background: transparent;
  border: none;
}

.guide-path-node--accent i {
  color: var(--accent);
}

.guide-path-arrow {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  padding: 0 0.1rem;
  color: var(--text-muted);
  font-size: var(--text-2xs);
}

.guide-modes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin: 1rem 0 1.25rem;
  align-items: stretch;
}

@media (min-width: 900px) {
  .guide-modes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.guide-mode-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 0.85rem 0.85rem 0.85rem 2.5rem;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: 2px;
}

.guide-mode-num {
  position: absolute;
  left: 0.65rem;
  top: 0.75rem;
  width: 1.35rem;
  height: 1.35rem;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 50%;
}

.guide-mode-card h4 {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 400;
  margin: 0 0 0.35rem;
  color: var(--text);
}

.guide-mode-card p {
  margin: 0;
  flex: 1;
  font-size: var(--text-md);
  line-height: var(--leading-snug);
  color: var(--text-muted);
}

@media (max-width: 560px) {
  .guide-limits-grid,
  .guide-modes-grid {
    grid-template-columns: 1fr;
  }
}

/* Site shell + lexicon panel */
.site-shell {
  width: 100%;
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.site-shell > .book {
  padding: 0;
  width: 100%;
}

.lexicon-panel.callout {
  margin: 0 auto 1rem;
  max-width: 38rem;
  width: 100%;
  color: var(--text-muted);
  background-color: var(--bg-muted);
}

.lexicon-panel:not(.is-active):not(.is-floating):not(.is-mobile-modal) {
  display: none;
}

.lexicon-panel-body .lexicon-panel-label {
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 700;
  margin-left: 0.5em;
  letter-spacing: 0;
  text-transform: none;
}

.lexicon-panel-label:not(:empty)::after {
  content: "\00a0:\00a0";
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--text-muted);
}

.lexicon-panel-def {
  display: inline;
}

.lexicon-meshcore-note {
  display: block;
  margin-top: 0.45rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.lexicon-meshcore-term {
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--text);
}

.lexicon-panel:not(.is-active) .lexicon-panel-label:empty {
  display: none;
}

body.has-lexicon-modal {
  overflow: hidden;
}

.lexicon-modal[hidden] {
  display: none !important;
}

.lexicon-modal {
  z-index: 150;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.45s ease, visibility 0.45s ease;
}

.lexicon-modal.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity 0.16s ease, visibility 0.16s ease;
}

.lexicon-modal .lexicon-modal__backdrop {
  opacity: 0;
  transition: opacity 0.45s ease;
}

.lexicon-modal.is-open .lexicon-modal__backdrop {
  opacity: 1;
  transition: opacity 0.16s ease;
}

.lexicon-modal .lexicon-panel {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: min(22rem, calc(100vw - 2rem));
  width: 100%;
  max-height: min(70vh, 24rem);
  overflow-y: auto;
  display: flex;
  transform: translateY(1.25rem);
  transition: transform 0.45s ease;
}

.lexicon-modal.is-open .lexicon-panel {
  transform: translateY(0);
  transition: transform 0.16s ease;
}

.lexicon-modal .lexicon-panel.is-active {
  display: flex;
}

@media (prefers-reduced-motion: reduce) {
  .lexicon-modal,
  .lexicon-modal.is-open,
  .lexicon-modal .lexicon-modal__backdrop,
  .lexicon-modal.is-open .lexicon-modal__backdrop,
  .lexicon-modal .lexicon-panel,
  .lexicon-modal.is-open .lexicon-panel {
    transition: none;
  }

  .lexicon-modal .lexicon-panel {
    transform: none;
  }
}

.lexicon-panel-close {
  display: none;
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  z-index: 2;
  margin: 0;
  padding: 0.2rem 0.35rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
}

.lexicon-panel-close:hover,
.lexicon-panel-close:focus-visible {
  color: var(--text);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.lexicon-modal .lexicon-panel-close {
  display: block;
}

.lexicon-modal .lexicon-panel-body {
  padding-right: 1.25rem;
}

.glossary-term {
  border-bottom: 1px dotted var(--accent);
  cursor: help;
}

.glossary-term:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (min-width: 56rem) {
  .site-shell > .site-header {
    grid-column: 1 / -1;
    max-width: none;
    margin: 0;
    padding-left: 0;
    padding-right: 0;
  }

  body.guide-page .site-header {
    display: grid;
    grid-template-columns: 1fr minmax(0, 42rem) 1fr;
    column-gap: 2rem;
    align-items: center;
  }

  .site-brand {
    left: 0;
  }

  body.guide-page .site-nav {
    grid-column: 2;
    max-width: none;
    width: 100%;
  }

  .site-shell {
    display: grid;
    grid-template-columns: 1fr minmax(0, 38rem) 1fr;
    column-gap: 2rem;
    row-gap: 0;
    align-items: start;
  }

  .site-shell > .book {
    grid-column: 2;
    margin: 0;
    max-width: none;
  }

  .lexicon-panel.is-floating {
    position: fixed;
    display: flex;
    width: 14rem;
    z-index: 80;
    margin: 0;
    max-width: none;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(1.25rem);
    transition: opacity 0.45s ease, transform 0.45s ease, visibility 0.45s ease;
    background-color: var(--bg-muted);
  }

  .lexicon-panel.is-floating.is-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0);
    transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s ease;
  }
}

@media (min-width: 56rem) and (prefers-reduced-motion: reduce) {
  .lexicon-panel.is-floating,
  .lexicon-panel.is-floating.is-active {
    transition: none;
    transform: none;
  }
}

/* Page TOC (decouvrir) */
.page-toc {
  margin-bottom: 1rem;
}

.page-toc-heading {
  text-underline-offset: 0.2em;
  margin: 0 0 0.5rem;
  max-height: 3.5rem;
  overflow: hidden;
  opacity: 1;
  transform: translateY(0);
  transition:
    max-height 0.22s ease,
    opacity 0.22s ease,
    transform 0.22s ease,
    margin 0.22s ease;
}

.page-toc-heading.is-hidden {
  max-height: 0;
  margin-bottom: 0;
  opacity: 0;
  transform: translateY(-0.35rem);
  pointer-events: none;
}

.page-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.page-toc-link {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.78rem;
  line-height: 1.35;
  display: block;
  border-left: 2px solid transparent;
  padding-left: 0.4rem;
  margin-left: -0.4rem;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.page-toc-link:hover {
  color: var(--text);
}

@media (max-width: 55.99rem) {
  .page-toc {
    padding: 0.85rem 1rem;
    background: var(--bg-muted);
    border: 1px solid var(--border);
    border-radius: 2px;
  }
}

@media (min-width: 56rem) {
  .page-toc.is-floating {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 75;
    margin: 0;
    max-height: min(80vh, calc(100vh - 4rem));
    overflow-y: auto;
    padding: 0 0.5rem 0 0;
    background: transparent;
    border: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-toc-heading,
  .page-toc-heading.is-hidden {
    transition: none;
    transform: none;
  }

  .page-toc-heading.is-hidden {
    max-height: 0;
    margin-bottom: 0;
    opacity: 0;
  }

  .page-toc-link {
    transition: none;
  }
}

/* Protéger page: book parts & security diagrams */
.book-part {
  margin: 2.5rem 0 1.25rem;
  padding: 1.5rem 0 0;
  border-top: 2px solid color-mix(in srgb, var(--accent) 35%, var(--border));
}

.book-part h2 {
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}

.book-part-lead {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--text-base);
}

.sec-diagram__panel {
  padding: 1rem;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: 2px;
}

.sec-diagram__panel--warn {
  border-color: color-mix(in srgb, var(--text-muted) 40%, var(--border));
}

.sec-diagram__panel--ok {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  background-color: color-mix(in srgb, var(--accent) 10%, var(--bg-muted));
}

.sec-diagram__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--accent);
}

.sec-diagram__row {
  flex-wrap: wrap;
  gap: 0.5rem;
  min-height: 3rem;
}

.sec-diagram__icon {
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  font-size: 1.1rem;
  color: var(--accent);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 2px;
}

.sec-diagram__icon--muted {
  color: var(--text-muted);
  opacity: 0.55;
}

.sec-diagram__strike {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom right,
    transparent calc(50% - 1px),
    var(--text-muted) calc(50% - 1px),
    var(--text-muted) calc(50% + 1px),
    transparent calc(50% + 1px)
  );
  opacity: 0.7;
}

.sec-diagram__link {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.sec-diagram__link--active {
  color: var(--accent);
}

.sec-diagram__caption {
  margin: 0.65rem 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.sec-diagram__panel .privacy-compare__list {
  margin-top: 0.5rem;
}

.sec-diagram--observer {
  margin: 1.25rem 0;
  padding: 1rem;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: 2px;
}

.sec-diagram__observer-flow {
  gap: 0.5rem;
}

.sec-diagram__observer-branch {
  gap: 0.35rem;
}

.sec-diagram__observer-link {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.sec-diagram__observer-note {
  margin: 0;
  font-size: var(--text-md);
  color: var(--text-muted);
}

.sec-modes-grid {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .sec-modes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.sec-mode-card {
  padding-left: 0.85rem;
}

.sec-mode-badges {
  margin: 0 0 0.5rem;
  padding: 0;
  list-style: none;
  font-size: var(--text-md);
  color: var(--text-muted);
}

.sec-mode-badges li + li {
  margin-top: 0.2rem;
}

.sec-mode-badges i {
  width: 1.1rem;
  color: var(--accent);
}

.sec-stack-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
}

.sec-stack-badges li {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  font-size: var(--text-ui);
  background-color: color-mix(in srgb, var(--accent) 12%, var(--bg-muted));
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border));
  border-radius: 2px;
}

.sec-stack-badges i {
  color: var(--accent);
  font-size: 0.85rem;
}

/* Hub page (accueil) */
body.hub-page .site-shell > .book {
  max-width: 42rem;
}

body.hub-page .title-page {
  padding-top: 3.25rem;
}

.hub-body {
  padding-bottom: 2rem;
}

.guide-hub {
  display: grid;
  gap: 1rem;
  margin: 0 0 2rem;
}

@media (min-width: 36rem) {
  .guide-hub {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.guide-hub-card {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1.15rem 1.2rem;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: 2px;
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.guide-hub-card:hover,
.guide-hub-card:focus-visible {
  border-color: var(--accent);
  background: var(--bg);
  outline: none;
}

.guide-hub-card__icon {
  color: var(--accent);
  font-size: 1.35rem;
  line-height: 1;
}

.guide-hub-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  color: var(--text);
}

.guide-hub-card__desc {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.hub-scope {
  margin: 0 0 1.75rem;
  font-size: 0.8rem;
  line-height: 1.55;
  color: color-mix(in srgb, var(--text-muted) 88%, transparent);
}

.hub-scope a {
  color: color-mix(in srgb, var(--link) 75%, var(--text-muted));
}

.hub-scope a:hover {
  color: var(--link-hover);
}

.hub-catch-up {
  margin: -0.75rem 0 1.75rem;
  font-size: var(--text-ui);
  color: var(--text-muted);
}

.hub-catch-up a {
  color: var(--link);
}

.hub-catch-up a:hover {
  color: var(--link-hover);
}

.hub-catch-up__new {
  margin-left: 0.2em;
  color: var(--accent);
  font-size: 0.85em;
  vertical-align: 0.05em;
}

@media (min-width: 56rem) {
  body.hub-page .site-shell {
    grid-template-columns: 1fr minmax(0, 42rem) 1fr;
  }

  body.hub-page .site-shell > .book {
    grid-column: 2;
    max-width: none;
  }
}

/* Contact modal */
.contact-modal[hidden] {
  display: none !important;
}

.contact-modal {
  z-index: 200;
}


.contact-modal__header {
  margin-bottom: 0.85rem;
}

.contact-modal__privacy,
.contact-modal__reply {
  margin: 0 0 0.75rem;
  font-size: 0.8rem;
}

.contact-modal__reply {
  margin-bottom: 1rem;
}

.contact-modal__form {
  display: grid;
  gap: 0.75rem;
}

.contact-modal__honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.contact-modal__field {
  display: grid;
  gap: 0.3rem;
  font-size: var(--text-ui);
}

.contact-modal__field span em {
  font-style: normal;
  color: var(--text-muted);
  font-weight: 400;
}

.contact-modal__status {
  margin: 0;
  min-height: 1.25rem;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.contact-modal__status.is-error {
  color: var(--accent);
}

.contact-modal__submit {
  background: color-mix(in srgb, var(--accent) 12%, var(--bg-muted));
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
}

.contact-modal__actions button:hover:not(:disabled),
.contact-modal__actions button:focus-visible:not(:disabled) {
  border-color: var(--link-hover);
}

.contact-modal__success[hidden] {
  display: none !important;
}

.contact-modal__compose[hidden] {
  display: none !important;
}

.contact-modal__success-callout p {
  margin: 0 0 0.65rem;
}

.contact-modal__success-callout p:last-child {
  margin-bottom: 0;
}

.contact-modal__actions--success {
  margin-top: 0.25rem;
}

.contact-modal__done {
  font: inherit;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: color-mix(in srgb, var(--accent) 12%, var(--bg-muted));
  color: var(--text);
  cursor: pointer;
}

.contact-modal__done:hover,
.contact-modal__done:focus-visible {
  border-color: var(--link-hover);
}

.contact-modal__actions button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* Catch-up page */
.catch-up-keypoints {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
  line-height: var(--leading-snug);
}

.catch-up-keypoints li + li {
  margin-top: 0.35rem;
}

.catch-up-hint {
  margin: 0.5rem 0 0.75rem;
}

.catch-up-kv {
  margin: 0;
}

.catch-up-kv__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  align-items: baseline;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
  font-size: var(--text-ui);
}

.catch-up-kv__row:first-child {
  border-top: 1px solid var(--border);
}

.catch-up-kv dt {
  margin: 0;
  min-width: 8.5rem;
  color: var(--text-muted);
}

.catch-up-kv dd {
  margin: 0;
}

.catch-up-links {
  margin: 1.25rem 0 0;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.catch-up-links a {
  color: var(--link);
}

.catch-up-links a:hover {
  color: var(--link-hover);
}

.catch-up-history {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  position: relative;
}

.catch-up-history::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0.2rem;
  bottom: 0.2rem;
  width: 2px;
  background: var(--border);
  transform: translateX(-50%);
}

.catch-up-history__item {
  position: relative;
  width: calc(50% - 1.1rem);
  margin: 0 0 1.5rem;
  box-sizing: border-box;
}

.catch-up-history__item:last-child {
  margin-bottom: 0;
}

.catch-up-history__item:nth-child(odd) {
  margin-right: auto;
  padding-right: 0.15rem;
  text-align: right;
}

.catch-up-history__item:nth-child(even) {
  margin-left: auto;
  padding-left: 0.15rem;
  text-align: left;
}

.catch-up-history__item::before {
  content: "";
  position: absolute;
  top: 0.4rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  box-sizing: border-box;
  z-index: 1;
}

.catch-up-history__item:nth-child(odd)::before {
  right: calc(-1.1rem - 1px);
  transform: translateX(50%);
}

.catch-up-history__item:nth-child(even)::before {
  left: calc(-1.1rem - 1px);
  transform: translateX(-50%);
}

.catch-up-history__date {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
}

.catch-up-history__item p {
  margin: 0;
  font-size: var(--text-ui);
  line-height: var(--leading-snug);
  color: var(--text-muted);
}

@media (max-width: 40rem) {
  .catch-up-history {
    padding: 0 0 0 1.15rem;
  }

  .catch-up-history::before {
    left: 0;
    transform: none;
  }

  .catch-up-history__item,
  .catch-up-history__item:nth-child(odd),
  .catch-up-history__item:nth-child(even) {
    width: auto;
    margin-left: 0;
    margin-right: 0;
    padding-left: 0.85rem;
    padding-right: 0;
    text-align: left;
  }

  .catch-up-history__item::before,
  .catch-up-history__item:nth-child(odd)::before,
  .catch-up-history__item:nth-child(even)::before {
    left: calc(-1.15rem - 1px);
    right: auto;
    transform: translateX(-50%);
  }
}

/* Error pages */
body.error-page .book {
  max-width: 42rem;
}

body.error-page .book-body {
  padding-bottom: 2.5rem;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--text-muted);
}

.error-page .callout > span > p {
  margin: 0 0 0.65rem;
}

.error-page .callout > span > p:last-child {
  margin-bottom: 0;
}

.error-suggestions a {
  color: var(--link);
  text-decoration: none;
}

.error-suggestions a:hover,
.error-suggestions a:focus-visible {
  color: var(--link-hover);
  text-decoration: underline;
}

.error-suggestions__sep {
  margin: 0 0.35rem;
  color: var(--text-muted);
}