:root {
  --guide-bg: #f5f7f6;
  --guide-panel: #ffffff;
  --guide-ink: #17212b;
  --guide-muted: #5b6770;
  --guide-rule: #d6dad7;
  --guide-blue: #1b5d8f;
  --guide-amber-bg: #fff8e6;
  --guide-amber-bd: #e7c068;
  --guide-red: #b5473b;
}

body.guidePage {
  margin: 0;
  background: var(--guide-bg);
  color: var(--guide-ink);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Helvetica Neue", "Hiragino Sans", "Meiryo", sans-serif;
  font-size: 15px;
  line-height: 1.7;
}

.guideHeader {
  background: linear-gradient(180deg, #102e4e 0%, #1b5d8f 100%);
  color: #fff;
  padding: 56px 24px 48px;
}
.guideHeaderInner {
  max-width: 880px;
  margin: 0 auto;
}
.guideHeader h1 {
  margin: 0 0 12px 0;
  font-size: 30px;
  letter-spacing: 0.01em;
}
.guideHeader .guideTagline {
  margin: 0 0 24px 0;
  font-size: 16px;
  opacity: 0.88;
}
.guideCtaButton {
  display: inline-block;
  padding: 11px 22px;
  background: #fff;
  color: var(--guide-blue);
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
}
.guideCtaButton:hover {
  background: #eaf2f8;
}

.guideLayout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}
@media (min-width: 980px) {
  .guideLayout {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: start;
  }
}

.guideToc {
  position: static;
  background: var(--guide-panel);
  border: 1px solid var(--guide-rule);
  border-radius: 8px;
  padding: 16px 18px;
  font-size: 14px;
}
@media (min-width: 980px) {
  .guideToc {
    position: sticky;
    top: 24px;
  }
}
.guideToc h2 {
  margin: 0 0 8px 0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--guide-muted);
  font-weight: 700;
}
.guideToc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.guideToc a {
  color: var(--guide-ink);
  text-decoration: none;
  padding: 4px 0;
  display: block;
  border-radius: 4px;
}
.guideToc a:hover {
  color: var(--guide-blue);
}

.guideMain {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.guideSection {
  background: var(--guide-panel);
  border: 1px solid var(--guide-rule);
  border-radius: 8px;
  padding: 28px 28px 24px;
  scroll-margin-top: 24px;
}
.guideSection h2 {
  margin: 0 0 8px 0;
  font-size: 22px;
  color: var(--guide-ink);
}
.guideSection h3 {
  margin: 22px 0 6px 0;
  font-size: 17px;
  color: var(--guide-ink);
}
.guideSection p {
  margin: 10px 0;
}
.guideSection ul,
.guideSection ol {
  padding-left: 22px;
  margin: 10px 0;
}
.guideSection li {
  margin: 4px 0;
}
.guideSection code {
  background: var(--guide-bg);
  padding: 1px 6px;
  border-radius: 3px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
}
.guideSection strong {
  color: var(--guide-ink);
}

.guideFigure {
  margin: 16px 0;
  border: 1px solid var(--guide-rule);
  border-radius: 6px;
  overflow: hidden;
  background: var(--guide-bg);
}
.guideFigure img {
  display: block;
  width: 100%;
  height: auto;
}
.guideFigure figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--guide-muted);
  border-top: 1px solid var(--guide-rule);
  background: var(--guide-panel);
}

.guidePlaceholder {
  margin: 16px 0;
  padding: 18px 20px;
  border: 1px dashed var(--guide-amber-bd);
  background: var(--guide-amber-bg);
  border-radius: 6px;
  color: #6a4d05;
  font-size: 13px;
}
.guidePlaceholder strong {
  color: #6a4d05;
}

.guideCallout {
  margin: 16px 0;
  padding: 14px 18px;
  border-left: 3px solid var(--guide-blue);
  background: #eaf2f8;
  border-radius: 0 6px 6px 0;
  font-size: 14px;
}
.guideCallout strong {
  color: var(--guide-blue);
}

.guideAccent {
  color: var(--guide-blue);
  font-weight: 700;
}

.guideFlowList {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 12px 0;
}
.guideFlowList li {
  line-height: 1.7;
}

.guideAiTag {
  display: inline-block;
  padding: 2px 9px;
  margin-right: 6px;
  background: linear-gradient(135deg, #1b5d8f 0%, #2a7fb8 100%);
  color: #fff;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  vertical-align: middle;
}

.guideAiSpotlight {
  margin: 24px 0 12px;
  padding: 24px 26px 18px;
  background: linear-gradient(135deg, #eef4fa 0%, #f8fafc 60%, #f4f7f9 100%);
  border: 1px solid #c7d8e6;
  border-radius: 10px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}
.guideAiSpotlight h3 {
  margin: 0 0 10px 0;
  color: var(--guide-blue);
  font-size: 18px;
}
.guideAiSpotlight h4 {
  margin: 18px 0 6px 0;
  font-size: 15.5px;
  color: var(--guide-ink);
  font-weight: 700;
}
.guideAiSpotlight h4 .guideAiTag {
  margin-right: 8px;
}

.guideExample {
  margin: 12px 0;
  padding: 14px 16px;
  background: var(--guide-panel);
  border: 1px solid var(--guide-rule);
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
  color: var(--guide-ink);
}

.guideAiCaveat {
  margin: 18px 0 0;
  padding: 12px 16px;
  background: #fff8e6;
  border-left: 3px solid #e7c068;
  border-radius: 0 4px 4px 0;
  font-size: 13.5px;
  color: var(--guide-ink);
}
.guideAiCaveat strong {
  color: #8a5a08;
}

.guideChecklist {
  margin: 10px 0;
  padding: 14px 18px;
  background: var(--guide-bg);
  border: 1px solid var(--guide-rule);
  border-radius: 6px;
}
.guideChecklist h4 {
  margin: 0 0 6px 0;
  font-size: 14px;
  color: var(--guide-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.guideChecklist ul {
  padding-left: 22px;
  margin: 6px 0 0;
}

.guideLabelRow {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin: 10px 0;
}
.guideLabel {
  padding: 3px 9px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.guideLabelAdopt {
  background: #e1f1e1;
  color: #1f6f2a;
  border: 1px solid #b8dfb8;
}
.guideLabelHold {
  background: #fdecc9;
  color: #8a5a08;
  border: 1px solid #e7c068;
}
.guideLabelReject {
  background: #fbe0db;
  color: #8c2e22;
  border: 1px solid #e6a299;
}

.guideFooter {
  background: var(--guide-panel);
  border-top: 1px solid var(--guide-rule);
  padding: 28px 24px;
  text-align: center;
  font-size: 13px;
  color: var(--guide-muted);
}
.guideFooter a {
  color: var(--guide-blue);
  text-decoration: none;
}
.guideFooter a:hover {
  text-decoration: underline;
}

.guideFigure img {
  cursor: zoom-in;
  transition: opacity 120ms ease;
}
.guideFigure img:hover {
  opacity: 0.93;
}
.guideFigure img:focus-visible {
  outline: 3px solid var(--guide-blue);
  outline-offset: 2px;
}

.guideLightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  z-index: 10000;
  padding: 56px 32px 32px;
  cursor: zoom-out;
}
.guideLightbox[hidden] {
  display: none;
}
.guideLightboxImg {
  max-width: 100%;
  max-height: calc(100vh - 140px);
  display: block;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.55);
  border-radius: 4px;
  background: #1a1a1a;
}
.guideLightboxCaption {
  margin: 0;
  max-width: 920px;
  color: #f0f3f5;
  font-size: 13px;
  text-align: center;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
}
.guideLightboxCaption:empty {
  display: none;
}
.guideLightboxClose {
  position: absolute;
  top: 14px;
  right: 18px;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.guideLightboxClose:hover {
  background: rgba(255, 255, 255, 0.3);
}
.guideLightboxClose:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}