:root {
  color-scheme: light;
  --ink: #14201b;
  --muted: #65716b;
  --line: #dce5df;
  --surface: #f6f8f5;
  --lime: #c9f04b;
  --forest: #173f32;
  --safe: #eef7df;
  font-family: Inter, Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: #fff;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: #fff; line-height: 1.55; }
a { color: inherit; }
.site-header { height: 62px; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.site-header img { width: 112px; display: block; }
.site-header span { font-size: 11px; font-weight: 900; letter-spacing: .14em; color: var(--forest); }
.exercise-guide { max-width: 720px; margin: 0 auto; padding-bottom: 112px; }
.guide-hero, .guide-section, .guide-final { padding: 38px 20px; }
.gold-badge, .section-kicker { display: inline-flex; align-items: center; min-height: 28px; padding: 6px 10px; border-radius: 999px; background: var(--lime); color: #1c2b22; font-size: 11px; font-weight: 900; letter-spacing: .08em; }
.english-name { margin: 22px 0 4px; color: var(--muted); font-size: 14px; font-weight: 700; }
h1 { margin: 0; font-size: clamp(38px, 11vw, 64px); line-height: 1.02; letter-spacing: -.055em; }
.hero-summary { margin: 18px 0; max-width: 30rem; font-size: 19px; font-weight: 700; line-height: 1.45; }
.guide-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 24px; }
.guide-tags span { padding: 7px 11px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); font-size: 12px; font-weight: 700; }
.hero-poster { margin: 0; border-radius: 24px; overflow: hidden; background: var(--surface); border: 1px solid var(--line); }
.hero-poster img, .hero-poster video { width: 100%; height: auto; display: block; aspect-ratio: 4 / 5; object-fit: contain; }
.hero-poster figcaption { padding: 11px 14px; font-size: 12px; color: var(--muted); }
.hero-actions { display: grid; gap: 10px; margin-top: 18px; }
.guide-cta, .secondary-action { min-height: 52px; padding: 14px 18px; border-radius: 15px; display: flex; align-items: center; justify-content: center; text-decoration: none; font-weight: 900; }
.guide-cta { background: var(--forest); color: white; }
.guide-cta span { margin-left: auto; }
.secondary-action { border: 1px solid var(--line); background: #fff; }
.guide-section { border-top: 1px solid var(--line); }
.guide-section.tinted { background: var(--surface); }
.guide-section h2 { margin: 14px 0 10px; font-size: clamp(26px, 7vw, 38px); line-height: 1.15; letter-spacing: -.035em; }
.section-lead { margin: 0 0 24px; color: var(--muted); font-size: 16px; }
.guide-card-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
.guide-card-grid article { padding: 18px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.guide-card-grid article > span { color: var(--forest); font-size: 12px; font-weight: 900; }
.guide-card-grid h3 { margin: 7px 0; font-size: 18px; }
.guide-card-grid p { margin: 7px 0 0; color: var(--muted); }
.guide-card-grid a { display: inline-flex; min-height: 44px; align-items: center; margin-top: 8px; color: var(--forest); font-weight: 800; }
.guide-card-grid small { display: block; margin-top: 9px; color: var(--muted); }
.motion-strip { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(78%, 1fr); overflow-x: auto; gap: 10px; scroll-snap-type: x mandatory; padding-bottom: 8px; }
.motion-strip figure { margin: 0; scroll-snap-align: start; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.motion-strip img, .motion-strip video { width: 100%; height: auto; display: block; aspect-ratio: 1; object-fit: contain; background: #101711; }
.motion-strip figcaption { padding: 9px 12px; font-weight: 800; }
.cue-section { background: var(--forest); color: white; }
.cue-section .section-kicker { color: var(--ink); }
.cue-section ol { list-style: none; padding: 0; margin: 22px 0 0; counter-reset: cue; }
.cue-section li { counter-increment: cue; display: grid; grid-template-columns: 38px 1fr; align-items: center; gap: 10px; padding: 14px 0; border-top: 1px solid rgba(255,255,255,.2); font-size: 17px; font-weight: 700; }
.cue-section li::before { content: counter(cue); width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--lime); color: var(--ink); font-weight: 900; }
.details-section details { border: 1px solid var(--line); border-radius: 16px; margin-top: 10px; background: #fff; }
.details-section summary { min-height: 54px; padding: 15px 16px; cursor: pointer; display: grid; gap: 2px; }
.details-section summary span { font-size: 11px; color: var(--forest); font-weight: 900; }
.details-section details > div, .details-section details > p { padding: 0 16px 18px; }
.details-section ol { padding-left: 22px; }
.details-section li { margin: 10px 0; }
.detail-pair { display: grid; gap: 10px; }
.detail-pair article { padding: 16px; border-radius: 14px; background: var(--surface); }
.detail-pair h3, .detail-pair p { margin: 0; }
.detail-pair p { margin-top: 7px; color: var(--muted); }
.safety-section { background: var(--safe); }
.safety-section ul { padding-left: 22px; }
.safety-section li { margin: 10px 0; font-weight: 650; }
.relation-grid { display: grid; gap: 14px; }
.relation-group h3 { margin: 0 0 8px; font-size: 13px; color: var(--forest); }
.relation-group a { min-height: 62px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 14px; display: flex; flex-direction: column; justify-content: center; text-decoration: none; }
.relation-group a + a { margin-top: 8px; }
.relation-group span { color: var(--muted); font-size: 13px; }
.provenance-section { background: var(--surface); }
.provenance-section dl { margin: 20px 0; }
.provenance-section dl div { display: grid; grid-template-columns: 110px 1fr; padding: 9px 0; border-bottom: 1px solid var(--line); }
.provenance-section dt { color: var(--muted); }
.provenance-section dd { margin: 0; font-weight: 700; }
.provenance-section > p { color: var(--muted); font-size: 13px; }
.source-links { display: grid; gap: 6px; }
.source-links a { min-height: 44px; display: flex; align-items: center; color: var(--forest); font-size: 13px; }
.guide-final { margin: 20px; padding: 28px 20px; border-radius: 24px; background: #edf8c8; }
.guide-final > span { font-size: 11px; font-weight: 900; letter-spacing: .1em; }
.guide-final h2 { margin: 7px 0; font-size: 30px; line-height: 1.1; }
.guide-final p { color: var(--muted); }
.sticky-guide-cta { position: fixed; z-index: 20; left: 0; right: 0; bottom: 0; padding: 10px 16px max(10px, env(safe-area-inset-bottom)); background: rgba(255,255,255,.94); border-top: 1px solid var(--line); backdrop-filter: blur(12px); }
.sticky-guide-cta .guide-cta { max-width: 688px; margin: 0 auto; }

@media (min-width: 620px) {
  .guide-hero, .guide-section { padding-left: 32px; padding-right: 32px; }
  .guide-card-grid { grid-template-columns: repeat(2, 1fr); }
  .motion-strip { grid-auto-flow: initial; grid-template-columns: repeat(3, 1fr); overflow: visible; }
  .detail-pair, .relation-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}