:root {
  color-scheme: light;
  --guide-ink: #15372f;
  --guide-muted: #52675f;
  --guide-green: #17633a;
  --guide-green-dark: #0d4c31;
  --guide-mint: #e9f5ec;
  --guide-pale: #f6faf7;
  --guide-ivory: #fbfaf5;
  --guide-border: #d9e7de;
  --guide-cyan: #14758a;
  --guide-width: 1160px;
}

* { box-sizing: border-box; }

html { overflow-x: hidden; scroll-behavior: smooth; }

body {
  margin: 0;
  overflow-x: hidden;
  background: #ffffff;
  color: var(--guide-ink);
  font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", system-ui, sans-serif;
  line-height: 1.75;
}

a { color: inherit; }

.body-guide-inner {
  width: min(100%, var(--guide-width));
  margin-inline: auto;
  padding-inline: 28px;
}

.body-guide-hero {
  padding-block: 52px 46px;
  border-bottom: 1px solid var(--guide-border);
  background: var(--guide-pale);
}

.body-guide-hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  grid-template-areas:
    "breadcrumb breadcrumb"
    "copy selector";
  gap: 22px clamp(34px, 5vw, 72px);
  align-items: start;
}

.body-guide-breadcrumb {
  grid-area: breadcrumb;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 2px;
  color: var(--guide-muted);
  font-size: 0.78rem;
}

.body-guide-breadcrumb a { color: var(--guide-green); }

.body-guide-kicker {
  margin: 0 0 10px;
  color: var(--guide-cyan);
  font-size: 0.82rem;
  font-weight: 800;
}

.body-guide-copy { grid-area: copy; }
.body-guide-intro { grid-area: intro; }

.body-guide-hero h1 {
  max-width: 17em;
  margin: 0;
  color: var(--guide-green-dark);
  font-size: clamp(2rem, 4.4vw, 3.35rem);
  line-height: 1.28;
  letter-spacing: 0;
}

.body-guide-hero h1 + p {
  max-width: 42rem;
  margin: 18px 0 0;
  color: var(--guide-muted);
  font-size: clamp(1rem, 1.7vw, 1.15rem);
}

.body-guide-actions {
  grid-area: actions;
  display: grid;
  justify-items: start;
  gap: 9px;
  margin-top: 26px;
}

.body-guide-actions small { color: var(--guide-muted); }

.body-guide-primary {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border: 1px solid var(--guide-green);
  border-radius: 8px;
  background: var(--guide-green);
  color: #ffffff;
  font-weight: 800;
  text-decoration: none;
}

.body-guide-primary:hover,
.body-guide-primary:focus-visible {
  background: var(--guide-green-dark);
  outline: 3px solid rgba(20, 117, 138, 0.24);
  outline-offset: 3px;
}

.body-guide-primary.compact { margin-top: 22px; }

.body-selector {
  grid-area: selector;
  width: min(100%, 520px);
  min-width: 0;
  margin-inline: auto;
  padding: 16px;
  border: 1px solid var(--guide-border);
  border-radius: 12px;
  background: #ffffff;
}

.body-selector-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}

.body-selector-toolbar > strong {
  color: var(--guide-green-dark);
  font-size: 0.92rem;
}

.body-selector-switch {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(58px, 1fr));
  padding: 3px;
  border: 1px solid var(--guide-border);
  border-radius: 9px;
  background: var(--guide-pale);
}

.body-selector-switch button {
  min-height: 44px;
  padding: 6px 12px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--guide-muted);
  font: inherit;
  font-size: 0.84rem;
  font-weight: 800;
  cursor: pointer;
}

.body-selector-switch button[aria-pressed="true"] {
  background: var(--guide-green);
  color: #ffffff;
}

.body-selector-switch button:focus-visible {
  outline: 3px solid rgba(20, 117, 138, 0.28);
  outline-offset: 2px;
}

.body-selector-canvas {
  position: relative;
  display: grid;
  width: 100%;
  height: 500px;
  place-items: center;
  overflow: hidden;
  border: 1px solid #e2ece5;
  border-radius: 10px;
  background: #eef5f0;
}

.body-selector-view {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.body-selector-view[hidden],
.body-selector-image[hidden] { display: none; }

.body-selector-figure {
  position: relative;
  height: 100%;
  aspect-ratio: 2 / 3;
}

.body-selector-image {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.body-selector-part {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.body-selector-label-link {
  position: absolute;
  top: var(--selector-label-y);
  z-index: 3;
  display: inline-flex;
  min-width: 54px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 7px 10px;
  transform: translateY(-50%);
  border: 1px solid #b8d3c0;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.97);
  color: var(--guide-green-dark);
  font-size: 0.8rem;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 2px 7px rgba(21, 55, 47, 0.07);
  pointer-events: auto;
  transition: background-color 150ms ease, border-color 150ms ease, box-shadow 150ms ease, color 150ms ease;
}

.body-selector-part-left .body-selector-label-link { right: 72%; }
.body-selector-part-right .body-selector-label-link { left: 72%; }

.body-selector-label-link small {
  color: var(--guide-green);
  font-size: 0.62rem;
}

.body-selector-guide {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.body-selector-guide path {
  fill: none;
  stroke: #8fb59a;
  stroke-linecap: round;
  stroke-width: 1;
  transition: stroke 150ms ease, stroke-width 150ms ease;
}

.body-selector-marker {
  position: absolute;
  left: var(--selector-marker-x);
  top: var(--selector-marker-y);
  z-index: 2;
  width: 8px;
  height: 8px;
  transform: translate(-50%, -50%);
  border: 2px solid #ffffff;
  border-radius: 50%;
  background: var(--guide-green);
  box-shadow: 0 0 0 2px rgba(23, 99, 58, 0.19);
  pointer-events: none;
  transition: background-color 150ms ease, box-shadow 150ms ease, transform 150ms ease;
}

.body-selector-label-link:hover,
.body-selector-label-link:focus-visible,
.body-selector-label-link:active,
.body-selector-part[data-selected="true"] .body-selector-label-link {
  border-color: var(--guide-green);
  background: #e3f3e7;
  box-shadow: 0 0 0 3px rgba(23, 99, 58, 0.1);
}

.body-selector-label-link:hover ~ .body-selector-guide path,
.body-selector-label-link:focus-visible ~ .body-selector-guide path,
.body-selector-label-link:active ~ .body-selector-guide path,
.body-selector-part[data-selected="true"] .body-selector-guide path {
  stroke: var(--guide-green);
  stroke-width: 1.6;
}

.body-selector-label-link:hover ~ .body-selector-marker,
.body-selector-label-link:focus-visible ~ .body-selector-marker,
.body-selector-label-link:active ~ .body-selector-marker,
.body-selector-part[data-selected="true"] .body-selector-marker {
  background: var(--guide-green-dark);
  box-shadow: 0 0 0 4px rgba(23, 99, 58, 0.16);
  transform: translate(-50%, -50%) scale(1.12);
}

.body-selector-label-link:focus-visible {
  outline: 3px solid rgba(20, 117, 138, 0.34);
  outline-offset: 3px;
}

.body-selector-help {
  margin: 10px 2px 0;
  color: var(--guide-muted);
  font-size: 0.76rem;
  line-height: 1.6;
}

.body-selector-fallback {
  display: grid;
  gap: 7px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--guide-border);
}

.body-selector-fallback > span {
  color: var(--guide-muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.body-selector-fallback > div {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.body-selector-fallback a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 6px 11px;
  border: 1px solid var(--guide-border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--guide-green-dark);
  font-size: 0.78rem;
  font-weight: 800;
  text-decoration: none;
}

.body-selector-fallback a:hover,
.body-selector-fallback a:focus-visible,
.body-selector-fallback a[aria-current="page"] {
  border-color: #8fbf9c;
  background: #e3f3e7;
  outline: none;
}

.body-guide-band {
  padding-block: 58px;
  border-bottom: 1px solid var(--guide-border);
  background: #ffffff;
}

.body-guide-band-light { background: var(--guide-pale); }

.body-guide-band h2 {
  margin: 0 0 12px;
  color: var(--guide-green-dark);
  font-size: clamp(1.45rem, 2.5vw, 2rem);
  line-height: 1.4;
}

.body-guide-band h2 + p {
  max-width: 48rem;
  margin: 0 0 24px;
  color: var(--guide-muted);
}

.body-guide-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.body-guide-steps li {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.body-guide-steps li > span {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  background: var(--guide-green);
  color: #ffffff;
  font-weight: 800;
}

.body-guide-steps strong { color: var(--guide-green-dark); }
.body-guide-steps p { margin: 4px 0 0; color: var(--guide-muted); font-size: 0.92rem; }

.body-guide-two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(30px, 6vw, 74px);
}

.body-guide-chip-list,
.body-guide-intent-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.body-guide-chip-list li,
.body-guide-intent-list li {
  padding: 8px 11px;
  border: 1px solid var(--guide-border);
  border-radius: 999px;
  background: var(--guide-ivory);
  color: var(--guide-green-dark);
  font-size: 0.86rem;
}

.body-guide-muscles,
.body-guide-result-list,
.body-guide-articles,
.body-guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.body-guide-muscles article,
.body-guide-result-list p,
.body-guide-article,
.body-guide-card {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--guide-border);
  border-radius: 8px;
  background: #ffffff;
}

.body-guide-muscles strong,
.body-guide-result-list strong,
.body-guide-article strong,
.body-guide-card strong {
  display: block;
  color: var(--guide-green-dark);
  font-size: 1.05rem;
  line-height: 1.5;
}

.body-guide-muscles p,
.body-guide-result-list span,
.body-guide-card small {
  display: block;
  margin: 8px 0 0;
  color: var(--guide-muted);
  font-size: 0.9rem;
}

.body-guide-result-list { margin-bottom: 4px; }
.body-guide-result-list p { margin: 0; }

.body-guide-article,
.body-guide-card {
  display: flex;
  min-height: 170px;
  flex-direction: column;
  color: inherit;
  text-decoration: none;
}

.body-guide-card span,
.body-guide-article span {
  margin-bottom: 10px;
  color: var(--guide-cyan);
  font-size: 0.78rem;
  font-weight: 800;
}

.body-guide-card b,
.body-guide-article b {
  margin-top: auto;
  padding-top: 16px;
  color: var(--guide-green);
  font-size: 0.88rem;
}

.body-guide-card:hover,
.body-guide-card:focus-visible,
.body-guide-article:hover,
.body-guide-article:focus-visible {
  border-color: #8fbf9c;
  outline: 3px solid rgba(20, 117, 138, 0.18);
  outline-offset: 2px;
}

.compact-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.compact-grid .body-guide-card { min-height: 190px; }

.body-guide-text-link { color: var(--guide-green); font-weight: 800; }

.body-guide-disclaimer {
  margin-top: 42px;
  padding: 18px 20px;
  border-left: 4px solid var(--guide-green);
  background: var(--guide-pale);
}

.body-guide-disclaimer strong { color: var(--guide-green-dark); }
.body-guide-disclaimer p { margin: 6px 0 0; color: var(--guide-muted); font-size: 0.88rem; }

@media (max-width: 900px) {
  .body-guide-hero-layout,
  .body-guide-two-column { grid-template-columns: 1fr; }
  .body-guide-hero-layout {
    grid-template-areas:
      "breadcrumb"
      "intro"
      "selector"
      "actions";
    gap: 24px;
  }
  .body-guide-copy { display: contents; }
  .body-selector { width: min(100%, 540px); }
  .body-selector-canvas { height: 420px; }
  .body-guide-steps,
  .body-guide-muscles,
  .body-guide-result-list,
  .body-guide-articles,
  .body-guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .compact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .body-guide-inner { padding-inline: 20px; }
  .body-guide-hero { padding-block: 32px 28px; }
  .body-guide-hero-layout { gap: 18px; }
  .body-guide-breadcrumb { margin-bottom: 0; }
  .body-guide-hero h1 { font-size: 2rem; }
  .body-guide-hero h1 + p { margin-top: 13px; }
  .body-guide-actions { margin-top: 0; }
  .body-guide-primary { width: 100%; padding-inline: 14px; text-align: center; }
  .body-selector { padding: 12px; border-radius: 10px; }
  .body-selector-toolbar { margin-bottom: 9px; }
  .body-selector-toolbar > strong { font-size: 0.82rem; }
  .body-selector-switch { grid-template-columns: repeat(2, minmax(52px, 1fr)); }
  .body-selector-switch button { min-height: 44px; padding-inline: 9px; }
  .body-selector-canvas { height: 360px; }
  .body-selector-label-link { min-width: 50px; min-height: 44px; padding: 6px 8px; font-size: 0.75rem; }
  .body-selector-label-link small { font-size: 0.58rem; }
  .body-selector-help { font-size: 0.72rem; }
  .body-selector-fallback { margin-top: 10px; padding-top: 10px; }
  .body-selector-fallback > div { gap: 6px; }
  .body-selector-fallback a { min-height: 44px; padding: 5px 10px; font-size: 0.74rem; }
  .body-guide-band { padding-block: 38px; }
  .body-guide-steps,
  .body-guide-muscles,
  .body-guide-result-list,
  .body-guide-articles,
  .body-guide-grid,
  .compact-grid { grid-template-columns: 1fr; gap: 14px; }
  .body-guide-steps { gap: 18px; }
  .body-guide-muscles article,
  .body-guide-result-list p,
  .body-guide-article,
  .body-guide-card { padding: 17px; }
  .body-guide-card,
  .body-guide-article,
  .compact-grid .body-guide-card { min-height: 0; }
  .body-guide-card b,
  .body-guide-article b { margin-top: 12px; padding-top: 0; }
}

body.home-light {
  font-family: "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  line-height: 1.6;
}

body.body-guide-modern .body-guide-inner {
  max-width: 980px;
}

body.body-guide-modern .body-guide-hero {
  padding-block: 32px;
  background: #f7fbf8;
}

body.body-guide-modern .body-guide-hero-layout {
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas: "breadcrumb" "copy";
  gap: 16px;
}

body.body-guide-modern .body-guide-copy {
  display: block;
  max-width: 760px;
}

body.body-guide-modern .body-guide-hero h1 {
  max-width: none;
  font-size: 2.2rem;
}

body.body-guide-modern .body-guide-hero h1 + p {
  margin-top: 12px;
  font-size: 1rem;
}

body.body-guide-modern .body-guide-actions {
  margin-top: 20px;
}

body.body-guide-modern .body-guide-band {
  padding-block: 38px;
}

body.body-guide-modern .body-guide-band h2 {
  font-size: 1.55rem;
}

body.body-guide-modern .body-guide-chip-list {
  gap: 10px;
}

body.body-guide-modern .body-guide-chip-list li {
  max-width: 100%;
  border-radius: 6px;
  background: #ffffff;
  overflow-wrap: anywhere;
}

.body-guide-examples {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.body-guide-example {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--guide-border);
  border-radius: 8px;
  background: #ffffff;
}

.body-guide-example-input {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px 8px;
  color: var(--guide-green-dark);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.body-guide-example p {
  margin: 12px 0 8px;
}

.body-guide-example small,
.body-guide-evidence-note {
  color: var(--guide-muted);
}

.body-guide-evidence-note {
  max-width: 49rem;
  margin: 18px 0 0;
  font-size: 0.9rem;
}

.body-guide-scope {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.body-guide-scope h3 {
  margin: 0 0 8px;
  color: var(--guide-green-dark);
  font-size: 1.05rem;
}

.body-guide-scope ul {
  margin: 0;
  padding-left: 1.3em;
}

.body-guide-faq {
  display: grid;
  gap: 0;
  max-width: 53rem;
  margin: 0;
}

.body-guide-faq-item {
  padding: 18px 0;
  border-top: 1px solid var(--guide-border);
}

.body-guide-faq-item:last-child {
  border-bottom: 1px solid var(--guide-border);
}

.body-guide-faq dt {
  color: var(--guide-green-dark);
  font-weight: 800;
}

.body-guide-faq dd {
  margin: 6px 0 0;
  color: var(--guide-muted);
}

@media (max-width: 900px) {
  .body-guide-examples { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  body.body-guide-modern .body-guide-hero {
    padding-block: 26px;
  }

  body.body-guide-modern .body-guide-actions {
    margin-top: 18px;
  }

  body.body-guide-modern .body-guide-hero h1 {
    font-size: 1.65rem;
  }

  body.body-guide-modern .body-guide-band h2 {
    font-size: 1.2rem;
  }

  .body-guide-examples,
  .body-guide-scope { grid-template-columns: 1fr; }

  .body-guide-example { padding: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .body-selector-label-link,
  .body-selector-guide path,
  .body-selector-marker { transition: none; }
}