:root {
  --navy: #071c34;
  --navy-2: #0d2947;
  --paper: #f7f2e8;
  --paper-deep: #eee5d5;
  --ink: #17243a;
  --muted: #657083;
  --gold: #f5b821;
  --gold-deep: #e4a20f;
  --burgundy: #7d1f3e;
  --line: rgba(7, 28, 52, 0.17);
  --sans: "Pretendard", "Noto Sans KR", Arial, sans-serif;
  --serif: "Noto Serif KR", "Batang", serif;
  --shadow: 0 20px 54px rgba(7, 28, 52, 0.16);
  --radius: 1.15rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); font-size: 16px; line-height: 1.65; }
body::selection { background: var(--gold); color: var(--navy); }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; display: block; }
[hidden] { display: none !important; }

.skip-link { position: fixed; z-index: 100; top: -5rem; left: 1rem; padding: .7rem 1rem; background: var(--gold); color: var(--navy); font-weight: 800; transition: top .2s; }
.skip-link:focus { top: 1rem; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
.section-shell { width: min(1180px, calc(100% - 4rem)); margin: 0 auto; }

.site-header { position: sticky; z-index: 40; top: 0; height: 78px; padding: 0 max(2rem, calc((100vw - 1180px) / 2)); display: flex; align-items: center; gap: 2rem; border-bottom: 1px solid rgba(247, 242, 232, .16); background: rgba(7, 28, 52, .96); color: var(--paper); backdrop-filter: blur(14px); }
.brand-lockup { display: inline-flex; align-items: center; gap: .55rem; min-width: max-content; }
.brand-lockup img { width: 44px; height: 44px; padding: 2px; object-fit: contain; border: 1px solid rgba(247,242,232,.35); border-radius: 7px; background: var(--paper); box-shadow: 0 3px 12px rgba(0,0,0,.18); }
.brand-lockup__text { font-weight: 800; letter-spacing: -.05em; font-size: 1.02rem; }
.main-nav { display: flex; align-items: center; gap: 1.7rem; margin-left: auto; font-size: .86rem; font-weight: 600; color: rgba(247, 242, 232, .75); }
.main-nav a { position: relative; }
.main-nav a::after { content: ""; position: absolute; right: 0; bottom: -.42rem; left: 0; height: 1px; background: var(--gold); transform: scaleX(0); transform-origin: right; transition: transform .25s ease; }
.main-nav a:hover::after, .main-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.header-cta { padding: .55rem .95rem; border: 1px solid rgba(247, 242, 232, .45); font-size: .8rem; font-weight: 700; transition: background .2s, color .2s; }
.header-cta:hover { background: var(--paper); color: var(--navy); }
.menu-button { display: none; padding: .45rem; border: 0; background: transparent; }
.menu-button span { display: block; width: 23px; height: 2px; margin: 5px; background: var(--paper); transition: transform .2s; }

.hero { position: relative; overflow: hidden; min-height: 690px; display: grid; grid-template-columns: minmax(0, 1.03fr) minmax(360px, .97fr); color: var(--paper); background: var(--navy); }
.hero::before { content: ""; position: absolute; inset: 0; opacity: .32; background-image: linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px); background-size: 62px 62px; mask-image: linear-gradient(to right, black, transparent 75%); }
.hero__paper { position: absolute; left: -14vw; bottom: -13rem; width: 70vw; height: 35rem; border-radius: 52% 48% 0 0; background: var(--paper); transform: rotate(-10deg); opacity: .08; }
.hero__content { position: relative; z-index: 1; align-self: center; width: min(690px, calc(100% - 4rem)); justify-self: end; padding: 7.8rem 2rem 7rem 0; }
.eyebrow { margin: 0 0 1rem; color: rgba(247,242,232,.7); font-size: .72rem; font-weight: 800; letter-spacing: .145em; }
.eyebrow--dark { color: var(--burgundy); }
.eyebrow__no { margin-right: .55rem; color: var(--gold); }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { letter-spacing: -.07em; line-height: 1.16; }
h1 { max-width: 710px; margin-bottom: 1.55rem; font-size: clamp(3rem, 5.25vw, 5.25rem); font-weight: 800; }
h1 em, h2 em { color: var(--gold); font-family: var(--serif); font-style: normal; font-weight: 600; }
.hero__summary { max-width: 500px; margin-bottom: 2rem; color: rgba(247,242,232,.76); font-size: 1rem; line-height: 1.9; word-break: keep-all; }
.hero__actions { display: flex; align-items: center; flex-wrap: wrap; gap: 1.4rem; }
.button { display: inline-flex; align-items: center; gap: .9rem; padding: .9rem 1.25rem; border: 1px solid transparent; font-size: .9rem; font-weight: 800; letter-spacing: -.02em; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-3px); box-shadow: 0 10px 18px rgba(0,0,0,.17); }
.button--gold { background: var(--gold); color: var(--navy); }
.button--paper { background: var(--paper); color: var(--navy); }
.button--navy { background: var(--navy); color: var(--paper); }
.text-link { display: inline-flex; align-items: center; gap: .4rem; color: var(--navy); border-bottom: 1px solid currentColor; font-size: .86rem; font-weight: 800; line-height: 1.8; }
.text-link--light { color: var(--paper); }
.hero__facts { display: flex; gap: 2.3rem; margin: 3.5rem 0 0; padding-top: 1.3rem; border-top: 1px solid rgba(247,242,232,.24); }
.hero__facts div { min-width: 0; }
.hero__facts dt { margin-bottom: .2rem; color: var(--gold); font-size: .63rem; font-weight: 800; letter-spacing: .15em; }
.hero__facts dd { margin: 0; font-size: .82rem; font-weight: 600; color: rgba(247,242,232,.82); white-space: nowrap; }
.hero__visual { position: relative; min-height: 640px; overflow: hidden; display: grid; place-items: center; }
.hero__orbit { position: absolute; border: 1px solid rgba(245,184,33,.45); border-radius: 50%; }
.hero__orbit--one { width: 545px; height: 545px; }
.hero__orbit--two { width: 420px; height: 420px; border-color: rgba(247,242,232,.2); transform: rotate(-23deg) scaleY(.62); }
.hero-logo-card { position: relative; z-index: 1; width: min(340px, 72%); aspect-ratio: .91; padding: 1.1rem; display: flex; align-items: center; justify-content: center; background: var(--paper); box-shadow: var(--shadow); transform: rotate(5deg); }
.hero-logo-card::before { content: ""; position: absolute; inset: 11px; border: 1px solid rgba(7,28,52,.18); }
.hero-logo-card img { position: relative; width: 80%; max-height: 78%; object-fit: contain; }
.hero-logo-card__tag { position: absolute; top: 1.7rem; left: 1.7rem; color: var(--burgundy); font-size: .56rem; font-weight: 800; letter-spacing: .13em; line-height: 1.4; }
.hero__note { position: absolute; z-index: 2; right: 5%; bottom: 11%; margin: 0; color: var(--gold); font-size: .67rem; font-weight: 700; letter-spacing: .16em; line-height: 1.45; transform: rotate(-90deg); transform-origin: right bottom; }
.hero__note strong { color: var(--paper); }

.brand-film { position: relative; overflow: hidden; padding: 7.4rem 0 7.6rem; background: var(--paper-deep); }
.brand-film::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .32; background-image: linear-gradient(90deg, rgba(7,28,52,.055) 1px, transparent 1px), linear-gradient(rgba(7,28,52,.055) 1px, transparent 1px); background-size: 52px 52px; }
.brand-film__inner { position: relative; }
.brand-film__header { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(250px, .55fr); align-items: end; gap: 4rem; margin-bottom: 2.7rem; }
.brand-film__header h2 { max-width: 840px; font-size: clamp(2.2rem, 3.5vw, 3.25rem); text-wrap: balance; word-break: keep-all; }
.brand-film__header > p { max-width: 350px; margin: 0 0 .55rem; color: #4e5b6e; font-size: .96rem; line-height: 1.8; word-break: keep-all; }
.brand-film__player { position: relative; overflow: hidden; aspect-ratio: 16 / 9; border: 1px solid rgba(7,28,52,.23); background: var(--navy); box-shadow: 19px 19px 0 rgba(125,31,62,.96), var(--shadow); }
.brand-film__player::after { content: ""; position: absolute; inset: 0; pointer-events: none; border: 1px solid rgba(247,242,232,.16); }
.brand-film__video { width: 100%; height: 100%; display: block; object-fit: cover; background: var(--navy); }
.brand-film__tag { position: absolute; top: 1.1rem; right: 1.15rem; padding: .32rem .55rem; background: var(--gold); color: var(--navy); font-size: .61rem; font-weight: 800; letter-spacing: .12em; line-height: 1; }
.brand-film__note { margin: 1.15rem 0 0; color: #657083; font-size: .72rem; font-weight: 600; }

.intro { position: relative; display: grid; grid-template-columns: 1fr .8fr; gap: 7rem; padding-top: 8.6rem; padding-bottom: 8.2rem; }
.section-marker { position: absolute; top: 5.1rem; right: 0; display: flex; flex-direction: column; align-items: flex-end; gap: .3rem; color: var(--burgundy); font-size: .68rem; font-weight: 800; letter-spacing: .12em; }
.section-marker i { display: block; width: 50px; height: 1px; background: currentColor; }
h2 { margin-bottom: 0; font-size: clamp(2.15rem, 3.6vw, 3.65rem); font-weight: 800; color: var(--navy); text-wrap: balance; }
h2 em { color: var(--burgundy); }
.intro__copy { padding-top: 4.5rem; }
.intro__copy > p:first-child { margin-bottom: 1.9rem; color: #49566a; font-size: 1.02rem; word-break: keep-all; }
.intro__quote { margin: 0; padding: 1.15rem 0 1.15rem 1.25rem; border-left: 3px solid var(--gold); color: var(--navy); font-family: var(--serif); font-size: 1.07rem; font-weight: 600; line-height: 1.7; }

.fields { position: relative; overflow: hidden; padding: 7.4rem 0 7rem; color: var(--paper); background: var(--navy); }
.fields::after { content: "YUKSAMI"; position: absolute; right: -1rem; bottom: -4rem; color: rgba(247,242,232,.04); font-size: clamp(6rem, 16vw, 14rem); font-weight: 800; letter-spacing: -.08em; }
.section-heading { position: relative; z-index: 1; display: flex; align-items: flex-end; justify-content: space-between; gap: 2rem; margin-bottom: 3rem; }
.section-heading h2 { color: var(--paper); }
.section-heading h2 em { color: var(--gold); }
.section-heading > p { max-width: 230px; margin: 0 0 .5rem; color: rgba(247,242,232,.68); font-size: .9rem; }
.subject-rail { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid rgba(247,242,232,.36); border-bottom: 1px solid rgba(247,242,232,.36); }
.subject-card { min-height: 256px; padding: 1.6rem 1.4rem; display: flex; flex-direction: column; border-right: 1px solid rgba(247,242,232,.25); transition: background .25s, color .25s, transform .25s; }
.subject-card:first-child { border-left: 1px solid rgba(247,242,232,.25); }
.subject-card:hover { color: var(--navy); background: var(--gold); transform: translateY(-8px); }
.subject-card__index { margin-bottom: auto; color: var(--gold); font-family: var(--serif); font-size: 1.4rem; }
.subject-card:hover .subject-card__index { color: var(--burgundy); }
.subject-card strong { font-size: 1.22rem; letter-spacing: -.05em; }
.subject-card small { margin-top: .2rem; color: rgba(247,242,232,.64); font-size: .75rem; }
.subject-card:hover small { color: rgba(7,28,52,.7); }
.subject-card > span:last-child { align-self: flex-end; margin-top: .9rem; color: var(--gold); font-size: 1.25rem; }
.subject-card:hover > span:last-child { color: var(--navy); }

.catalog { position: relative; padding-top: 8.2rem; padding-bottom: 7.3rem; }
.catalog__header { display: flex; justify-content: space-between; align-items: flex-end; gap: 3rem; margin-bottom: 3rem; }
.catalog__description { max-width: 350px; margin: 0 0 .5rem; color: #536176; font-size: .91rem; word-break: keep-all; }
.finder { padding: 1.3rem; display: flex; align-items: center; justify-content: space-between; gap: 1.2rem; border: 1px solid var(--line); background: #fbf8f1; }
.filter-row { display: flex; flex-wrap: wrap; gap: .45rem; }
.filter-chip { padding: .47rem .72rem; border: 1px solid rgba(7,28,52,.2); border-radius: 99px; background: transparent; color: var(--navy); font-size: .74rem; font-weight: 700; transition: background .2s, color .2s; }
.filter-chip:hover, .filter-chip.is-active { border-color: var(--navy); color: var(--paper); background: var(--navy); }
.filter-chip span { margin-left: .18rem; color: var(--gold); font-size: .59rem; }
.search-box { display: flex; align-items: center; gap: .45rem; min-width: 255px; padding: .5rem .1rem .5rem .8rem; border-bottom: 1px solid var(--navy); }
.search-box input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--navy); font-size: .8rem; }
.search-box input::placeholder { color: #8c96a5; }
.search-box span { font-size: 1.3rem; }
.result-status { margin: 1.1rem 0 1.8rem; color: var(--muted); font-size: .78rem; font-weight: 600; }
.book-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; align-items: stretch; }
.book-card { display: grid; grid-template-rows: 350px minmax(277px, auto); min-height: 627px; overflow: hidden; border: 1px solid var(--line); background: #fbf8f1; transition: transform .25s ease, box-shadow .25s ease; }
.book-card:hover { transform: translateY(-7px); box-shadow: var(--shadow); }
.book-card__cover { position: relative; width: 100%; height: 100%; min-height: 0; display: flex; align-items: center; justify-content: center; overflow: hidden; padding: 14px; background: linear-gradient(145deg, #e8e0d0, #f7f2e8); }
.book-card__cover img { width: 100%; height: 100%; max-width: 100%; max-height: 100%; object-fit: contain !important; object-position: center center; border: 1px solid rgba(7,28,52,.14); background: #fff; box-shadow: 0 11px 20px rgba(7,28,52,.18); transition: transform .45s ease; }
.book-card:hover .book-card__cover img { transform: translateY(-4px) scale(1.018); }
.book-card__ribbon { position: absolute; top: .72rem; left: .65rem; padding: .24rem .4rem; background: var(--gold); color: var(--navy); font-size: .57rem; font-weight: 800; letter-spacing: .07em; }
.book-card__body { display: flex; flex-direction: column; min-height: 0; padding: 1.25rem 1.1rem 1.05rem; }
.book-card__meta { display: flex; justify-content: space-between; gap: .4rem; margin-bottom: .6rem; color: var(--burgundy); font-size: .61rem; font-weight: 800; letter-spacing: .04em; }
.book-card__meta span { color: #9aa1ad; }
.book-card h3 { margin-bottom: .5rem; color: var(--navy); font-size: 1.04rem; font-weight: 800; letter-spacing: -.055em; line-height: 1.4; word-break: keep-all; }
.book-card__author { margin-bottom: .85rem; color: var(--muted); font-size: .72rem; }
.book-card__description { margin-bottom: 1rem; color: #57647a; font-size: .72rem; line-height: 1.65; word-break: keep-all; }
.book-card__footer { display: flex; flex-direction: column; align-items: flex-start; gap: .45rem; margin-top: auto; padding-top: .8rem; border-top: 1px solid var(--line); }
.book-card__footer strong { color: var(--navy); font-size: .95rem; letter-spacing: -.04em; }
.book-card__footer a { color: var(--burgundy); font-size: .69rem; font-weight: 800; }
.book-card__footer a:hover { text-decoration: underline; }
.empty-state { margin: 2rem 0 0; padding: 3.5rem 1rem; text-align: center; border: 1px dashed var(--line); color: var(--muted); }
.empty-state span { display: block; margin-bottom: .3rem; color: var(--burgundy); font-size: 2rem; }
.empty-state p { margin-bottom: .8rem; }
.empty-state button { padding: .55rem .85rem; border: 1px solid var(--navy); background: transparent; color: var(--navy); font-size: .75rem; font-weight: 800; }
.catalog__source { margin: 1.45rem 0 0; color: #8d96a4; font-size: .65rem; }

.study-path { color: var(--paper); background: var(--burgundy); }
.study-path__inner { display: grid; grid-template-columns: .98fr 1.02fr; gap: 5rem; padding-top: 6.5rem; padding-bottom: 6.5rem; }
.study-path h2 { color: var(--paper); font-size: clamp(2.4rem, 4.2vw, 4rem); }
.study-path h2 em { color: var(--gold); }
.study-path__copy > p:not(.eyebrow) { max-width: 430px; margin-top: 1.45rem; margin-bottom: 1.7rem; color: rgba(247,242,232,.76); font-size: .94rem; word-break: keep-all; }
.study-path__steps { align-self: center; border-top: 1px solid rgba(247,242,232,.36); }
.study-path__steps > div { display: grid; grid-template-columns: 44px 1fr auto; align-items: center; gap: .75rem; padding: 1.25rem 0; border-bottom: 1px solid rgba(247,242,232,.25); }
.study-path__steps span { color: var(--gold); font-family: var(--serif); font-size: 1.35rem; }
.study-path__steps strong { font-size: 1.02rem; }
.study-path__steps p { margin: 0; color: rgba(247,242,232,.67); font-size: .74rem; }

.video-section { position: relative; padding-top: 8.2rem; padding-bottom: 7.8rem; }
.video-section__header { display: flex; align-items: flex-end; justify-content: space-between; gap: 2rem; margin-bottom: 3rem; }
.video-layout { display: grid; grid-template-columns: 1.55fr .75fr; gap: 1.15rem; }
.video-frame { overflow: hidden; aspect-ratio: 16 / 9; background: var(--navy); box-shadow: var(--shadow); }
.video-frame iframe { width: 100%; height: 100%; border: 0; }
.video-list { align-self: stretch; display: flex; flex-direction: column; border-top: 1px solid var(--navy); }
.video-list__item { flex: 1; display: grid; grid-template-columns: 2.1rem 1fr auto; align-items: center; gap: .55rem; padding: 1rem 0; border-bottom: 1px solid var(--line); transition: padding .2s ease, color .2s; }
.video-list__item:hover { padding-left: .45rem; color: var(--burgundy); }
.video-list__number { color: var(--burgundy); font-family: var(--serif); font-size: 1.2rem; }
.video-list__item small, .video-list__item strong { display: block; }
.video-list__item small { color: #768196; font-size: .66rem; font-weight: 700; }
.video-list__item strong { margin-top: .13rem; color: var(--navy); font-size: .83rem; letter-spacing: -.04em; line-height: 1.35; }
.video-list__item b { font-size: .9rem; }

.channel { position: relative; overflow: hidden; color: var(--paper); background: var(--navy); }
.channel__pattern { position: absolute; top: -.6rem; right: -.3rem; color: rgba(247,242,232,.04); font-size: clamp(12rem, 23vw, 21rem); font-weight: 800; letter-spacing: -.15em; line-height: .75; text-align: right; }
.channel__inner { position: relative; z-index: 1; display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 6rem; padding-top: 6.5rem; padding-bottom: 6.5rem; }
.channel__image-wrap { display: flex; align-items: center; justify-content: center; overflow: hidden; padding: 13px; border: 9px solid var(--paper); box-shadow: 18px 18px 0 var(--gold); transform: rotate(-2deg); background: white; }
.channel__image-wrap img { width: 92%; max-width: 92%; height: auto; min-height: 0; object-fit: contain; }
.channel h2 { color: var(--paper); }
.channel h2 em { color: var(--gold); }
.channel__content > p:not(.eyebrow) { max-width: 520px; margin: 1.55rem 0 1.7rem; color: rgba(247,242,232,.75); word-break: keep-all; }

.purchase-callout { background: var(--gold); }
.purchase-callout__inner { padding-top: 6.8rem; padding-bottom: 6.8rem; text-align: center; }
.purchase-callout h2 { margin: 0 auto 1.85rem; color: var(--navy); font-size: clamp(2.15rem, 3.6vw, 3.6rem); }
.purchase-callout h2 em { color: var(--burgundy); }

.site-footer { color: rgba(247,242,232,.74); background: #061323; }
.site-footer__top { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding-top: 2.4rem; padding-bottom: 2.4rem; }
.footer-brand { display: inline-flex; align-items: center; gap: .6rem; color: var(--paper); font-weight: 800; letter-spacing: -.04em; }
.footer-brand img { width: 42px; height: 42px; padding: 2px; object-fit: contain; border-radius: 6px; background: var(--paper); }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 1.4rem; font-size: .74rem; font-weight: 700; }
.footer-links a:hover { color: var(--gold); }
.site-footer__bottom { display: flex; justify-content: space-between; gap: 1rem; padding-top: 1.15rem; padding-bottom: 1.2rem; border-top: 1px solid rgba(247,242,232,.13); font-size: .61rem; letter-spacing: .04em; }
.site-footer__bottom p { margin: 0; }

@media (max-width: 960px) {
  .site-header { padding: 0 1.5rem; }
  .main-nav { gap: 1rem; }
  .hero { grid-template-columns: 1.08fr .92fr; min-height: 630px; }
  .hero__content { width: min(100% - 3rem, 590px); padding: 6.3rem 0 5rem; justify-self: center; }
  .hero__visual { min-height: auto; }
  .hero-logo-card { width: min(300px, 80%); }
  .section-shell { width: min(100% - 3rem, 1180px); }
  .brand-film__header { grid-template-columns: 1fr; gap: 1.2rem; }
  .brand-film__header > p { max-width: 560px; margin-bottom: 0; }
  .intro { gap: 4rem; }
  .book-grid { grid-template-columns: repeat(2, 1fr); }
  .book-card { grid-template-rows: 320px minmax(270px, auto); min-height: 590px; }
  .channel__inner { gap: 4rem; }
}

@media (max-width: 720px) {
  .site-header { height: 68px; padding: 0 1rem; gap: .8rem; }
  .brand-lockup img { width: 34px; height: 34px; }
  .brand-lockup__text { font-size: .95rem; }
  .main-nav { position: absolute; top: 68px; right: 0; left: 0; display: none; padding: 1rem 1.4rem 1.25rem; border-bottom: 1px solid rgba(247,242,232,.18); background: var(--navy); }
  .main-nav.is-open { display: grid; gap: .9rem; }
  .header-cta { display: none; }
  .menu-button { display: block; margin-left: auto; }
  .menu-button[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .section-shell { width: min(100% - 2.3rem, 1180px); }
  .hero { display: block; min-height: auto; }
  .hero__content { width: min(100% - 2.4rem, 590px); padding: 5.2rem 0 3.1rem; }
  .hero__summary { font-size: .93rem; }
  h1 { font-size: clamp(2.85rem, 12.3vw, 4rem); }
  .hero__facts { gap: .7rem; justify-content: space-between; margin-top: 2.3rem; }
  .hero__facts dd { font-size: .67rem; white-space: normal; }
  .hero__visual { min-height: 360px; }
  .hero__orbit--one { width: 330px; height: 330px; }
  .hero__orbit--two { width: 250px; height: 250px; }
  .hero-logo-card { width: 205px; }
  .hero__note { right: 7%; bottom: 8%; }
  .brand-film { padding-top: 5.4rem; padding-bottom: 5.6rem; }
  .brand-film__header { display: block; margin-bottom: 2rem; }
  .brand-film__header > p { margin-top: 1.4rem; font-size: .9rem; }
  .brand-film__player { box-shadow: 10px 10px 0 rgba(125,31,62,.96), var(--shadow); }
  .brand-film__tag { top: .7rem; right: .7rem; font-size: .53rem; }
  .brand-film__note { margin-top: .9rem; font-size: .68rem; line-height: 1.6; }
  .intro { display: block; padding-top: 5.7rem; padding-bottom: 5.2rem; }
  .intro__copy { padding-top: 2rem; }
  h2 { font-size: clamp(2rem, 8.7vw, 2.8rem); }
  .brand-film__header h2 { font-size: clamp(1.8rem, 7.7vw, 2.35rem); }
  .section-marker { top: 3.2rem; }
  .fields { padding-top: 5.5rem; padding-bottom: 5rem; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 1.25rem; }
  .subject-rail { grid-template-columns: repeat(2, 1fr); }
  .subject-card { min-height: 185px; padding: 1.15rem .9rem; }
  .subject-card:nth-child(3) { border-left: 1px solid rgba(247,242,232,.25); }
  .subject-card:nth-child(5) { border-left: 1px solid rgba(247,242,232,.25); }
  .subject-card:nth-child(n+3) { border-top: 1px solid rgba(247,242,232,.25); }
  .subject-card strong { font-size: 1rem; }
  .catalog { padding-top: 5.7rem; padding-bottom: 5rem; }
  .catalog__header { display: block; margin-bottom: 2rem; }
  .catalog__description { margin-top: 1.4rem; }
  .finder { display: block; padding: 1rem; }
  .search-box { min-width: 0; margin-top: 1rem; }
  .book-grid { grid-template-columns: 1fr; }
  .book-card { grid-template-rows: 300px minmax(255px, auto); min-height: 555px; }
  .book-card__cover { height: 300px; padding: 12px; }
  .study-path__inner { display: block; padding-top: 5rem; padding-bottom: 5rem; }
  .study-path__steps { margin-top: 2.4rem; }
  .study-path__steps > div { grid-template-columns: 36px 1fr; }
  .study-path__steps p { grid-column: 2; }
  .video-section { padding-top: 5.7rem; padding-bottom: 5rem; }
  .video-section__header { display: block; }
  .video-section__header .text-link { margin-top: 1.25rem; }
  .video-layout { display: block; }
  .video-list { margin-top: 1.2rem; }
  .video-list__item { padding: 1.1rem 0; }
  .channel__inner { display: flex; flex-direction: column; gap: 2.8rem; align-items: flex-start; padding-top: 5rem; padding-bottom: 5rem; }
  .channel__image-wrap { width: min(91%, 340px); }
  .purchase-callout__inner { padding-top: 5.2rem; padding-bottom: 5.2rem; }
  .site-footer__top { display: block; padding-top: 2rem; padding-bottom: 1.8rem; }
  .footer-links { justify-content: flex-start; margin-top: 1.4rem; gap: .7rem 1.2rem; }
  .site-footer__bottom { display: block; }
  .site-footer__bottom p + p { margin-top: .35rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}