/* Single course page: compact catalogue layout and an original typographic cover. */
.edu-page {
  --ed-ink: var(--sd-ink);
  --ed-muted: var(--sd-muted);
  --ed-line: var(--sd-line);
  --ed-paper: var(--sd-paper);
  --ed-soft: var(--sd-wash);
  --ed-dark: var(--sd-navy);
  --ed-accent: var(--sd-accent);
  --ed-button: var(--sd-forest);
  --ed-button-text: #fff;
}
.edu-page .ed-shell { max-width: 1028px; margin-inline: auto; padding-inline: 24px; }
.edu-page .ed-back-link { display: inline-flex; align-items: center; min-height: 44px; margin-bottom: 18px; color: var(--sd-accent); font-size: 13px; font-weight: 750; text-decoration: none; }
.edu-page .ed-back-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.edu-page .ed-eyebrow { display: block; color: var(--ed-accent); font-size: 12px; font-weight: 800; line-height: 1.5; }
.edu-page .ed-hero { padding: 34px 0 46px; background: var(--ed-paper); color: var(--ed-ink); }
.edu-page .ed-hero-heading { margin-bottom: 25px; }
.edu-page .ed-category { display: inline-flex; align-items: center; flex-wrap: wrap; gap: 11px; color: var(--ed-muted); font-size: 12px; font-weight: 650; }
.edu-page .ed-category-mark { display: inline-block; padding: 4px 11px; border-radius: 3px; background: var(--ed-accent); color: #fff; font-size: 11px; font-weight: 800; }
.edu-page .ed-hero h1 { margin: 20px 0 0; color: var(--ed-ink); font-size: clamp(27px, 3vw, 34px); font-weight: 800; line-height: 1.35; letter-spacing: -.042em; text-wrap: balance; }
.edu-page .ed-hero-grid { display: grid; grid-template-columns: minmax(0, 1.85fr) minmax(290px, .9fr); gap: 19px; align-items: stretch; }
.edu-page .ed-cover { position: relative; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; min-height: 337px; padding: 30px 32px 28px; border-radius: 6px; background: var(--ed-dark); color: var(--sd-night-text); }
.edu-page .ed-cover-top { position: relative; z-index: 2; display: flex; justify-content: space-between; gap: 14px; color: var(--sd-night-muted); font-size: 10px; font-weight: 750; letter-spacing: .075em; }
.edu-page .ed-cover-copy { position: relative; z-index: 2; max-width: 55%; padding: 33px 0 31px; }
.edu-page .ed-cover-copy > span { display: block; margin-bottom: 10px; color: var(--sd-night-muted); font-size: 12px; font-weight: 600; }
.edu-page .ed-cover-copy strong { display: block; font-size: clamp(30px, 3.5vw, 46px); font-weight: 820; line-height: 1.2; letter-spacing: -.06em; text-wrap: balance; }
.edu-page .ed-cover-copy p { margin-top: 12px; color: var(--sd-night-muted); font-size: 12px; line-height: 1.6; }
.edu-page .ed-cover-art { position: absolute; right: 29px; top: 54px; bottom: 51px; display: flex; flex-direction: column; align-items: flex-end; justify-content: center; width: 42%; pointer-events: none; font-family: 'Pretendard', sans-serif; font-weight: 900; letter-spacing: -.12em; line-height: .8; }
.edu-page .ed-cover-art span:first-child { align-self: flex-start; color: #66778B; font-size: clamp(96px, 9vw, 135px); }
.edu-page .ed-cover-art span:last-child { color: var(--sd-gold); font-size: clamp(128px, 11vw, 174px); }
.edu-page .ed-cover-bottom { position: relative; z-index: 2; display: flex; flex-wrap: wrap; gap: 6px; }
.edu-page .ed-cover-bottom span { display: inline-block; padding: 4px 10px; border-radius: 999px; background: var(--sd-night-text); color: var(--sd-navy); font-size: 10px; font-weight: 800; line-height: 1.3; }
.edu-page .ed-course-card { display: flex; flex-direction: column; min-width: 0; padding: 25px 24px 18px; border: 1px solid var(--ed-line); border-radius: 7px; background: var(--ed-paper); box-shadow: 0 4px 24px rgba(0,0,0,.075); }
.edu-page .ed-card-label { color: var(--ed-muted); font-size: 12px; font-weight: 750; }
.edu-page .ed-course-duration { display: flex; align-items: end; gap: 13px; padding: 11px 0 15px; border-bottom: 1px solid var(--ed-line); }
.edu-page .ed-course-duration strong { color: var(--ed-ink); font-size: 43px; font-weight: 850; letter-spacing: -.065em; line-height: 1; }
.edu-page .ed-course-duration span { padding-bottom: 3px; color: var(--ed-muted); font-size: 11px; line-height: 1.45; }
.edu-page .ed-course-card dl { margin: 4px 0 15px; }
.edu-page .ed-course-card dl div { display: grid; grid-template-columns: 37px minmax(0,1fr); gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--ed-line); font-size: 12px; line-height: 1.5; }
.edu-page .ed-course-card dt { color: var(--ed-muted); font-weight: 650; }
.edu-page .ed-course-card dd { margin: 0; color: var(--ed-ink); font-weight: 650; }
.edu-page .ed-button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 48px; padding: 11px 17px; border: 1px solid var(--ed-button); border-radius: 5px; background: var(--ed-button); color: var(--ed-button-text); font-size: 14px; font-weight: 750; line-height: 1.4; text-align: center; text-decoration: none; transition: background .18s ease, border-color .18s ease; }
.edu-page .ed-button:hover { border-color: #234C3B; background: #234C3B; }
.edu-page .ed-card-cta { justify-content: space-between; width: 100%; margin-top: auto; }
.edu-page .ed-card-cta span { font-size: 18px; font-weight: 500; }
.edu-page .ed-card-link { display: inline-flex; align-items: center; justify-content: center; gap: 5px; min-height: 40px; margin-top: 5px; color: var(--ed-muted); font-size: 12px; font-weight: 700; text-decoration: underline; text-decoration-color: var(--ed-muted); text-underline-offset: 4px; }
.edu-page .ed-card-link:hover { color: var(--ed-ink); }
.edu-page .ed-hero-note { margin-top: 15px; color: var(--ed-muted); font-size: 12px; line-height: 1.6; }
.edu-page .ed-hero-note::before { margin-right: 5px; content: '※'; }
.edu-page .ed-quicknav { position: sticky; top: 68px; z-index: 20; border-block: 1px solid var(--ed-line); background: var(--ed-paper); }
.edu-page .ed-quicknav .ed-shell { display: flex; align-items: center; gap: 27px; overflow-x: auto; min-height: 57px; scrollbar-width: thin; }
.edu-page .ed-quicknav strong { margin-right: auto; color: var(--ed-muted); font-size: 12px; white-space: nowrap; }
.edu-page .ed-quicknav a { display: inline-flex; align-items: center; flex: none; min-height: 48px; border-bottom: 2px solid transparent; color: var(--ed-ink); font-size: 13px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.edu-page .ed-quicknav a:hover { border-bottom-color: var(--ed-accent); color: var(--ed-accent); }
.edu-page .ed-section { padding: 83px 0 91px; background: var(--ed-paper); color: var(--ed-ink); scroll-margin-top: 126px; }
.edu-page .ed-section.ed-soft { background: var(--ed-soft); }
.edu-page .ed-section-head { max-width: 720px; margin-bottom: 33px; }
.edu-page .ed-section h2 { margin: 12px 0 0; color: var(--ed-ink); font-size: clamp(29px, 3.3vw, 41px); font-weight: 820; line-height: 1.25; letter-spacing: -.052em; text-wrap: balance; }
.edu-page .ed-section-head p { max-width: 65ch; margin-top: 14px; color: var(--ed-muted); font-size: 15px; line-height: 1.75; }
.edu-page .ed-intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(35px, 6vw, 76px); align-items: start; }
.edu-page .ed-audience { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.edu-page .ed-audience li { display: grid; grid-template-columns: 22px 1fr; gap: 9px; padding: 14px 0; border-top: 1px solid var(--ed-line); font-size: 15px; font-weight: 650; line-height: 1.6; }
.edu-page .ed-audience li::before { color: var(--ed-accent); font-weight: 800; content: '•'; }
.edu-page .ed-fact-panel { padding: 24px 26px; border: 1px solid var(--ed-line); border-radius: 4px; background: var(--ed-paper); }
.edu-page .ed-fact-panel h3 { margin: 0 0 12px; font-size: 17px; letter-spacing: -.025em; }
.edu-page .ed-fact-panel dl { margin: 0; }
.edu-page .ed-fact-panel dl div { padding: 11px 0; border-top: 1px solid var(--ed-line); }
.edu-page .ed-fact-panel dt { color: var(--ed-muted); font-size: 12px; font-weight: 700; }
.edu-page .ed-fact-panel dd { margin: 4px 0 0; font-size: 13px; font-weight: 650; line-height: 1.55; }
.edu-page #outcomes .ed-shell { display: grid; grid-template-columns: minmax(250px,.8fr) minmax(0,1.2fr); gap: clamp(36px, 6vw, 70px); align-items: start; }
.edu-page #outcomes .ed-section-head { margin-bottom: 0; }
.edu-page .ed-output-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 27px 22px; }
.edu-page .ed-output { min-width: 0; padding-top: 14px; border-top: 1px solid var(--ed-line); }
.edu-page .ed-output span { color: var(--ed-accent); font-size: 12px; font-weight: 800; }
.edu-page .ed-output h3 { margin: 12px 0 8px; font-size: 21px; line-height: 1.35; letter-spacing: -.035em; }
.edu-page .ed-output p { color: var(--ed-muted); font-size: 13px; line-height: 1.7; }
.edu-page #curriculum { background: var(--ed-dark); color: var(--sd-night-text); }
.edu-page #curriculum .ed-eyebrow, .edu-page #curriculum .ed-stage-no { color: var(--sd-gold); }
.edu-page #curriculum h2, .edu-page #curriculum .ed-stage h3 { color: var(--sd-night-text); }
.edu-page #curriculum .ed-section-head p, .edu-page #curriculum .ed-stage p { color: var(--sd-night-muted); }
.edu-page .ed-journey { margin: 0; padding: 0; border-top: 1px solid #526276; list-style: none; }
.edu-page .ed-journey li { display: grid; grid-template-columns: 60px minmax(0,1fr) minmax(195px,.5fr); gap: 23px; align-items: start; padding: 25px 0; border-bottom: 1px solid #314059; }
.edu-page .ed-stage-no { font-size: 13px; font-weight: 800; white-space: nowrap; }
.edu-page .ed-stage h3 { margin: 0 0 7px; font-size: 22px; font-weight: 750; letter-spacing: -.035em; line-height: 1.35; }
.edu-page .ed-stage p { max-width: 66ch; margin: 0; font-size: 13px; line-height: 1.7; }
.edu-page .ed-stage-output { padding: 4px 0 4px 15px; border-left: 1px solid #526276; color: var(--sd-night-text); font-size: 12px; line-height: 1.6; }
.edu-page .ed-stage-output b { display: block; margin-bottom: 4px; color: var(--sd-gold); font-size: 11px; }
.edu-page .ed-role-note { margin-top: 27px; padding: 18px 20px; border: 1px solid #314059; border-radius: 4px; color: var(--sd-night-muted); font-size: 13px; line-height: 1.7; }
.edu-page .ed-role-note strong { color: var(--sd-night-text); }
.edu-page .ed-method-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 27px; counter-reset: method; }
.edu-page .ed-method { min-width: 0; padding: 21px 12px 0 0; border-top: 1px solid var(--ed-ink); counter-increment: method; }
.edu-page .ed-method::before { display: block; margin-bottom: 21px; color: var(--ed-accent); font-size: 12px; font-weight: 800; content: '0' counter(method); }
.edu-page .ed-method h3 { margin: 0 0 9px; font-size: 20px; letter-spacing: -.03em; }
.edu-page .ed-method p { color: var(--ed-muted); font-size: 13px; line-height: 1.75; }
.edu-page .ed-proof-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.edu-page .ed-proof { display: flex; flex-direction: column; min-width: 0; padding: 27px 27px 21px; border: 1px solid var(--ed-line); border-radius: 4px; background: var(--ed-paper); }
.edu-page .ed-proof small { color: var(--ed-accent); font-size: 12px; font-weight: 750; }
.edu-page .ed-proof h3 { margin: 11px 0 9px; font-size: 23px; letter-spacing: -.035em; line-height: 1.35; }
.edu-page .ed-proof p { margin: 0; color: var(--ed-muted); font-size: 13px; line-height: 1.7; }
.edu-page .ed-proof a { display: inline-flex; align-items: center; min-height: 44px; margin-top: auto; padding-top: 13px; color: var(--ed-accent); font-size: 13px; font-weight: 750; text-underline-offset: 4px; }
.edu-page .ed-quote { margin: 30px 0 0; padding: 6px 0 5px 22px; border-left: 3px solid var(--ed-accent); color: var(--ed-ink); font-size: clamp(19px,2vw,24px); font-weight: 700; letter-spacing: -.025em; line-height: 1.55; }
.edu-page .ed-quote cite { display: block; margin-top: 12px; color: var(--ed-muted); font-size: 12px; font-style: normal; font-weight: 550; letter-spacing: 0; }
.edu-page .ed-faq { max-width: 900px; border-top: 1px solid var(--ed-line); }
.edu-page .ed-faq details { border-bottom: 1px solid var(--ed-line); }
.edu-page .ed-faq summary { position: relative; padding: 19px 40px 19px 0; cursor: pointer; font-size: 15px; font-weight: 750; list-style: none; }
.edu-page .ed-faq summary::-webkit-details-marker { display: none; }
.edu-page .ed-faq summary::after { position: absolute; top: 16px; right: 3px; color: var(--ed-ink); content: '+'; font-size: 24px; font-weight: 400; }
.edu-page .ed-faq details[open] summary::after { content: '−'; }
.edu-page .ed-faq details p { padding: 0 38px 20px 0; color: var(--ed-muted); font-size: 13px; line-height: 1.75; }
.edu-page .ed-final { padding: 55px 0; background: var(--ed-dark); color: var(--sd-night-text); }
.edu-page .ed-final .ed-shell { display: flex; align-items: center; justify-content: space-between; gap: 27px; }
.edu-page .ed-final .ed-eyebrow { color: var(--sd-gold); }
.edu-page .ed-final h2 { max-width: 20ch; margin-top: 9px; font-size: clamp(29px,3vw,39px); letter-spacing: -.045em; line-height: 1.3; }
.edu-page .ed-final p { max-width: 55ch; margin-top: 13px; color: var(--sd-night-muted); font-size: 13px; line-height: 1.7; }
.edu-page .ed-final .ed-button { flex: none; }
.edu-page .ed-sticky-cta { position: fixed; z-index: 40; right: 16px; bottom: 17px; left: 16px; visibility: hidden; opacity: 0; transform: translateY(15px); pointer-events: none; transition: opacity .22s ease, transform .22s ease, visibility .22s ease; }
.edu-page .ed-sticky-cta.is-visible { visibility: visible; opacity: 1; transform: translateY(0); }
.edu-page .ed-sticky-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; max-width: 1028px; min-height: 73px; margin-inline: auto; padding: 10px 12px 10px 23px; border: 1px solid var(--ed-line); border-radius: 6px; background: var(--ed-paper); box-shadow: 0 8px 30px rgba(0,0,0,.14); color: var(--ed-ink); pointer-events: auto; }
.edu-page .ed-sticky-inner strong { display: block; font-size: 14px; line-height: 1.4; }
.edu-page .ed-sticky-inner > div span { display: block; margin-top: 2px; color: var(--ed-muted); font-size: 11px; }
.edu-page .ed-sticky-inner .ed-button { min-width: 168px; }
.edu-page :is(a,summary):focus-visible { outline: 3px solid var(--sd-focus); outline-offset: 4px; }
html[data-theme="dark"] .edu-page .ed-category-mark { color: var(--sd-navy); }
html[data-theme="dark"] .edu-page .ed-course-card { border-color: var(--ed-line); }
@media (max-width: 900px) {
  .edu-page .ed-hero-grid { grid-template-columns: minmax(0,1.35fr) minmax(270px,.9fr); gap: 15px; }
  .edu-page .ed-cover { padding-inline: 24px; }
  .edu-page .ed-cover-copy strong { font-size: 36px; }
  .edu-page .ed-cover-art { right: 12px; width: 39%; }
  .edu-page #outcomes .ed-shell { grid-template-columns: 1fr; gap: 26px; }
}
@media (max-width: 720px) {
  .edu-page .ed-hero-grid, .edu-page .ed-intro-grid, .edu-page .ed-proof-grid { grid-template-columns: 1fr; }
  .edu-page .ed-cover { min-height: 340px; }
  .edu-page .ed-quicknav { top: 64px; }
  .edu-page .ed-quicknav strong { display: none; }
  .edu-page .ed-section { padding: 65px 0 72px; }
  .edu-page .ed-journey li { grid-template-columns: 55px minmax(0,1fr); gap: 9px 15px; }
  .edu-page .ed-stage-output { grid-column: 2; }
  .edu-page .ed-final .ed-shell { display: block; }
  .edu-page .ed-final .ed-button { margin-top: 23px; }
}
@media (max-width: 560px) {
  .edu-page .ed-shell { padding-inline: 20px; }
  .edu-page .ed-hero { padding: 27px 0 35px; }
  .edu-page .ed-category { gap: 7px; font-size: 11px; }
  .edu-page .ed-hero h1 { font-size: 28px; }
  .edu-page .ed-cover { min-height: 335px; padding: 20px; }
  .edu-page .ed-cover-copy { max-width: 65%; padding-block: 35px 28px; }
  .edu-page .ed-cover-copy strong { font-size: 33px; }
  .edu-page .ed-cover-art { right: 9px; top: 55px; bottom: auto; width: 37%; height: 125px; }
  .edu-page .ed-cover-art span:first-child { font-size: 68px; }
  .edu-page .ed-cover-art span:last-child { font-size: 90px; }
  .edu-page .ed-course-card { padding: 22px; }
  .edu-page .ed-output-grid, .edu-page .ed-method-grid { grid-template-columns: 1fr; gap: 24px; }
  .edu-page .ed-journey li { grid-template-columns: 1fr; gap: 9px; padding: 21px 0; }
  .edu-page .ed-stage-output { grid-column: 1; margin-top: 4px; }
  .edu-page .ed-sticky-cta { right: 0; bottom: 0; left: 0; }
  .edu-page .ed-sticky-inner { min-height: 0; padding: 10px 16px max(10px, env(safe-area-inset-bottom)); border-right: 0; border-bottom: 0; border-left: 0; border-radius: 0; }
  .edu-page .ed-sticky-inner > div { display: none; }
  .edu-page .ed-sticky-inner .ed-button { width: 100%; }
}
@media (max-width: 360px) {
  .edu-page .ed-cover-copy strong { font-size: 29px; }
  .edu-page .ed-cover-art span:first-child { font-size: 60px; }
  .edu-page .ed-cover-art span:last-child { font-size: 78px; }
}
@media (prefers-reduced-motion: reduce) { .edu-page .ed-button, .edu-page .ed-sticky-cta { transition: none; } }