.ch-guide-page {
  padding-top: 48px;
}

.ch-guide-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: 56px;
  align-items: end;
  padding: 34px 0 52px;
  border-bottom: 1px solid var(--border);
}

.ch-guide-hero .ch-subtitle {
  max-width: 720px;
}

.ch-guide-summary {
  margin: 0;
  border-top: 1px solid var(--border-strong);
}

.ch-guide-summary div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.ch-guide-summary dt {
  color: var(--muted);
}

.ch-guide-summary dd {
  margin: 0;
  color: var(--heading);
  font-weight: 850;
  text-align: right;
}

.ch-guide-start {
  padding: 56px 0;
}

.ch-guide-kicker {
  display: block;
  margin-bottom: 8px;
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.ch-guide-start h2,
.ch-guide-topic h2 {
  margin: 0;
  color: var(--heading);
  line-height: 1.16;
  letter-spacing: 0;
}

.ch-guide-start h2 {
  font-size: 34px;
}

.ch-guide-path {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  list-style: none;
}

.ch-guide-path li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  min-width: 0;
  padding: 24px 18px;
  border-right: 1px solid var(--border);
}

.ch-guide-path li:last-child {
  border-right: 0;
}

.ch-guide-path li > span {
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 950;
}

.ch-guide-path strong,
.ch-guide-path p,
.ch-guide-path a {
  display: block;
}

.ch-guide-path strong {
  color: var(--heading);
  font-size: 17px;
}

.ch-guide-path p {
  min-height: 48px;
  margin: 7px 0 14px;
  color: var(--muted);
  line-height: 1.5;
}

.ch-guide-path a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--primary-dark);
  font-weight: 850;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.ch-guide-home-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
  margin-top: 24px;
  padding: 28px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.ch-guide-home-cta h2 {
  margin: 10px 0 0;
  color: var(--heading);
  font-size: 28px;
  line-height: 1.2;
  letter-spacing: 0;
}

.ch-guide-home-cta p {
  max-width: 700px;
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.ch-guide-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 64px;
  align-items: start;
  padding-bottom: 72px;
}

.ch-guide-navigation {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  display: grid;
  gap: 20px;
  min-width: 0;
}

.ch-guide-mobile-jump {
  display: none;
}

.ch-guide-toc {
  display: grid;
  gap: 3px;
  padding-left: 12px;
  border-left: 1px solid var(--border-strong);
}

.ch-guide-toc > strong {
  margin: 0 0 8px 10px;
  color: var(--heading);
  font-size: 13px;
}

.ch-guide-toc a {
  min-height: 44px;
  display: flex;
  align-items: center;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
  transition: background-color .18s ease, color .18s ease;
}

.ch-guide-toc a:hover,
.ch-guide-toc a[aria-current="location"] {
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.ch-guide-support-note {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-soft);
}

.ch-guide-support-note strong {
  color: var(--heading);
}

.ch-guide-support-note p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.ch-guide-content {
  min-width: 0;
  border-top: 1px solid var(--border);
}

.ch-guide-topic {
  scroll-margin-top: calc(var(--header-height) + 24px);
  padding: 48px 0 54px;
  border-bottom: 1px solid var(--border);
  outline: 0;
}

.ch-guide-topic:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 38%, transparent);
  outline-offset: 8px;
}

.ch-guide-topic h2 {
  max-width: 760px;
  font-size: 32px;
}

.ch-guide-lead {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

.ch-guide-steps {
  display: grid;
  gap: 0;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.ch-guide-steps li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--border);
}

.ch-guide-steps li > span {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--primary-dark);
  font-weight: 950;
}

.ch-guide-steps strong {
  color: var(--heading);
  font-size: 16px;
}

.ch-guide-steps p {
  margin: 5px 0 0;
  color: var(--muted);
  line-height: 1.62;
}

.ch-guide-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.ch-guide-channel-switch {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 28px;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-soft);
}

.ch-guide-channel-switch button {
  min-height: 48px;
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease;
}

.ch-guide-channel-switch button:hover {
  color: var(--heading);
}

.ch-guide-channel-switch button[aria-selected="true"] {
  border-color: var(--border-strong);
  background: var(--surface);
  color: var(--primary-dark);
  box-shadow: var(--shadow-soft);
}

.ch-guide-channel-switch button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 34%, transparent);
  outline-offset: 2px;
}

.ch-guide-channel-panel {
  margin-top: 18px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.ch-guide-channel-panel[hidden] {
  display: none;
}

.ch-guide-channel-panel h3 {
  margin: 0;
  color: var(--heading);
  font-size: 20px;
}

.ch-guide-channel-panel .ch-guide-steps {
  margin-top: 16px;
}

.ch-guide-prepare,
.ch-guide-compare,
.ch-guide-troubleshooting,
.ch-guide-faq {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 26px 0 0;
}

.ch-guide-prepare > div,
.ch-guide-compare article,
.ch-guide-troubleshooting article,
.ch-guide-faq > div {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-soft);
}

.ch-guide-prepare strong,
.ch-guide-compare strong,
.ch-guide-troubleshooting strong,
.ch-guide-faq dt {
  color: var(--heading);
  font-weight: 900;
}

.ch-guide-prepare p,
.ch-guide-compare p,
.ch-guide-troubleshooting p,
.ch-guide-faq dd {
  margin: 7px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.ch-guide-callout,
.ch-guide-safety {
  margin-top: 24px;
  padding: 18px 20px;
  border-left: 4px solid var(--primary);
  background: var(--primary-soft);
}

.ch-guide-callout strong,
.ch-guide-safety strong {
  color: var(--heading);
}

.ch-guide-callout p,
.ch-guide-safety p {
  margin: 5px 0 0;
  line-height: 1.6;
}

.ch-guide-callout a {
  display: inline-block;
  margin-top: 10px;
  color: var(--primary-dark);
  font-weight: 850;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.ch-guide-source-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.ch-guide-source-list a {
  display: flex;
  align-items: center;
  min-height: 46px;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--primary-dark);
  font-weight: 850;
  line-height: 1.35;
  text-decoration: none;
}

.ch-guide-source-list a:hover,
.ch-guide-source-list a:focus-visible {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.ch-guide-plan-list {
  display: grid;
  margin-top: 26px;
  border-top: 1px solid var(--border);
}

.ch-guide-plan-list div {
  display: grid;
  grid-template-columns: minmax(170px, .7fr) minmax(0, 1.3fr);
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.ch-guide-plan-list strong {
  color: var(--heading);
}

.ch-guide-plan-list span {
  color: var(--muted);
  line-height: 1.55;
}

.ch-guide-safety {
  border-left-color: var(--warning);
  background: color-mix(in srgb, var(--warning) 10%, var(--surface));
}

@media (max-width: 980px) {
  .ch-guide-hero {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .ch-guide-summary {
    max-width: 620px;
  }

  .ch-guide-path {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ch-guide-path li:nth-child(2) {
    border-right: 0;
  }

  .ch-guide-path li:nth-child(-n + 2) {
    border-bottom: 1px solid var(--border);
  }

  .ch-guide-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .ch-guide-navigation {
    position: static;
  }

  .ch-guide-mobile-jump {
    display: grid;
    gap: 7px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
  }

  .ch-guide-mobile-jump span {
    color: var(--heading);
    font-size: 13px;
    font-weight: 850;
  }

  .ch-guide-mobile-jump select {
    width: 100%;
    min-height: 46px;
    padding: 0 42px 0 12px;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
  }

  .ch-guide-toc,
  .ch-guide-support-note {
    display: none;
  }
}

@media (max-width: 720px) {
  .ch-guide-page {
    padding-top: 22px;
  }

  .ch-guide-hero {
    padding: 24px 0 38px;
  }

  .ch-guide-hero .ch-title {
    font-size: 36px;
  }

  .ch-guide-summary div {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .ch-guide-summary dd {
    text-align: left;
  }

  .ch-guide-start {
    padding: 40px 0;
  }

  .ch-guide-start h2,
  .ch-guide-topic h2 {
    font-size: 28px;
  }

  .ch-guide-path {
    grid-template-columns: 1fr;
  }

  .ch-guide-path li,
  .ch-guide-path li:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .ch-guide-path li:last-child {
    border-bottom: 0;
  }

  .ch-guide-path p {
    min-height: 0;
  }

  .ch-guide-topic {
    padding: 40px 0 44px;
  }

  .ch-guide-lead {
    font-size: 16px;
  }

  .ch-guide-prepare,
  .ch-guide-compare,
  .ch-guide-troubleshooting,
  .ch-guide-faq {
    grid-template-columns: 1fr;
  }

  .ch-guide-plan-list div {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .ch-guide-action-row .ch-btn,
  .ch-guide-action-row .ch-btn-outline {
    width: 100%;
  }

  .ch-guide-channel-panel {
    padding: 18px;
  }

  .ch-guide-home-cta {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 24px 0;
  }

  .ch-guide-home-cta .ch-btn {
    width: 100%;
  }
}

@media (max-width: 420px) {
  .ch-guide-hero .ch-title {
    font-size: 32px;
  }

  .ch-guide-mobile-jump,
  .ch-guide-prepare > div,
  .ch-guide-compare article,
  .ch-guide-troubleshooting article,
  .ch-guide-faq > div {
    padding: 16px;
  }

  .ch-guide-channel-switch {
    grid-template-columns: 1fr;
  }

  .ch-guide-channel-panel {
    padding: 16px;
  }
}