:root {
  --ink: #131617;
  --paper: #ffffff;
  --line: #dce1e2;
  --soft: #f2f5f4;
  --accent: #dd472e;
  --accent-dark: #236a64;
  --serif: "Noto Serif KR", Georgia, serif;
  --sans: "Plus Jakarta Sans", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--serif); }
a { color: inherit; text-decoration: none; }
main, footer { max-width: 1440px; margin: 0 auto; }

.series-nav { height: 86px; padding: 0 6.6vw; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 9px; align-items: baseline; font-size: 18px; font-weight: 700; }
.brand small, .back, .eyebrow, .series-nav > span, .chapter-label, .pill, footer { font-family: var(--sans); }
.brand small { color: var(--accent); font-size: 9px; letter-spacing: .18em; }
.back { font-size: 12px; font-weight: 700; }

.series-hero { min-height: 680px; padding: 8.6vw 6.6vw; display: grid; grid-template-columns: .95fr 1.05fr; align-items: center; gap: 8vw; }
.eyebrow { margin: 0 0 21px; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .15em; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 13px; font-size: clamp(46px, 5.8vw, 80px); line-height: 1.2; font-weight: 500; letter-spacing: -.085em; }
.english-title { margin-bottom: 34px; font-family: var(--sans); color: #7c8587; font-size: 13px; }
.lead { max-width: 370px; color: #535b5d; font-size: 16px; line-height: 1.9; word-break: keep-all; }
.hero-art { position: relative; height: 420px; overflow: hidden; background: var(--accent-dark); }
.hero-art .disc { position: absolute; top: 16%; left: 19%; width: 146px; height: 146px; border-radius: 50%; background: #f2efeb; }
.hero-art .land { position: absolute; left: -7%; bottom: -30px; width: 118%; height: 300px; background: var(--ink); clip-path: polygon(0 57%, 11% 30%, 22% 51%, 37% 15%, 50% 48%, 65% 25%, 79% 57%, 91% 19%, 100% 43%, 100% 100%, 0 100%); }
.hero-art .stamp { position: absolute; right: 8%; bottom: 9%; width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: white; font-size: 17px; }

.study { padding: 8.5vw 6.6vw; background: var(--soft); }
.study-heading { display: flex; justify-content: space-between; gap: 30px; align-items: end; margin-bottom: 43px; }
.study-heading h2 { margin-bottom: 0; font-size: clamp(32px, 4vw, 56px); line-height: 1.35; font-weight: 500; letter-spacing: -.075em; }
.study-heading p:last-child { max-width: 270px; margin-bottom: 6px; color: #596164; font-size: 14px; line-height: 1.7; }
.study-grid { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--line); gap: 1px; }
.study-grid article { min-height: 254px; padding: 35px; background: white; }
.chapter-label { color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .12em; }
.study-grid h3 { margin: 31px 0 14px; font-size: 24px; font-weight: 500; letter-spacing: -.055em; }
.study-grid p { color: #5d6568; font-size: 13px; line-height: 1.75; word-break: keep-all; }

.guide { padding: 9.3vw 6.6vw; display: grid; grid-template-columns: .9fr 1.1fr; gap: 10vw; align-items: center; }
.guide h2 { margin: 0; font-size: clamp(36px, 4.5vw, 62px); line-height: 1.3; font-weight: 500; letter-spacing: -.08em; }
.guide-card { padding: 40px; border: 1px solid var(--line); }
.pill { display: inline-block; padding: 6px 10px; color: var(--accent); background: var(--soft); font-size: 10px; font-weight: 700; }
.guide-card h3 { margin: 26px 0 14px; font-size: 28px; font-weight: 500; letter-spacing: -.055em; }
.guide-card p { margin-bottom: 0; color: #596164; font-size: 14px; line-height: 1.8; word-break: keep-all; }

.waitlist { margin: 0 6.6vw 10vw; padding: 62px 6vw; color: white; background: var(--ink); }
.waitlist h2 { margin: 0 0 12px; font-size: clamp(28px, 3.4vw, 45px); font-weight: 500; letter-spacing: -.07em; }
.waitlist p { margin-bottom: 29px; color: #c5cdce; font-size: 14px; }
.waitlist a { display: inline-flex; gap: 35px; padding-bottom: 8px; border-bottom: 1px solid white; font-family: var(--sans); font-size: 12px; font-weight: 700; }
.waitlist a span { color: #f18370; font-size: 16px; }
footer { padding: 27px 6.6vw; display: flex; justify-content: space-between; border-top: 1px solid var(--line); color: #7a8587; font-size: 9px; font-weight: 700; letter-spacing: .12em; }

.catholic { --accent: #9e2224; --accent-dark: #2f4961; --soft: #f2f5f8; }
.catholic .hero-art .disc { width: 6px; height: 215px; left: 50%; top: 18%; border-radius: 0; background: #f0e8df; box-shadow: -105px 105px 0 -69px #f0e8df, 105px 105px 0 -69px #f0e8df; }
.catholic .hero-art .land { display: none; }
.catholic .hero-art .stamp { border-radius: 0; }
.protestant { --accent: #b66a22; --accent-dark: #435e4e; --soft: #f5f6f1; }
.protestant .hero-art .disc { width: 190px; height: 190px; left: auto; right: 15%; top: 13%; background: #eee9d9; }
.protestant .hero-art .land { height: 330px; clip-path: polygon(0 62%, 12% 40%, 22% 53%, 31% 21%, 47% 56%, 58% 36%, 66% 47%, 79% 17%, 91% 48%, 100% 31%, 100% 100%, 0 100%); }

@media (max-width: 720px) {
  .series-nav { height: 72px; padding: 0 24px; }
  .series-hero, .guide { display: block; padding: 74px 24px; }
  h1 { font-size: 48px; }
  .hero-art { height: 320px; margin-top: 55px; }
  .study { padding: 75px 24px; }
  .study-heading { display: block; }
  .study-heading h2 { margin-bottom: 22px; }
  .study-grid { grid-template-columns: 1fr; }
  .study-grid article { min-height: 210px; padding: 29px; }
  .guide h2 { margin-bottom: 42px; }
  .guide-card { padding: 30px; }
  .waitlist { margin: 0 24px 80px; padding: 42px 30px; }
  footer { padding: 24px; font-size: 8px; }
}