:root {
  --ink: #17211b;
  --muted: #667169;
  --line: #cbd4ca;
  --paper: #f2f4ed;
  --lime: #c9f36b;
  --blue: #dce8f5;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: 'Manrope', 'Noto Sans KR', sans-serif;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  opacity: .25;
  pointer-events: none;
  content: '';
  background-image: linear-gradient(rgba(23, 33, 27, .07) 1px, transparent 1px), linear-gradient(90deg, rgba(23, 33, 27, .07) 1px, transparent 1px);
  background-size: 42px 42px;
}

.page-shell {
  width: min(1100px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header,
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.site-header {
  height: 88px;
}

.monogram {
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-decoration: none;
}

.monogram span,
.contact-links span {
  color: #719326;
}

.header-note,
.eyebrow,
.section-index,
.site-footer {
  font-family: 'DM Mono', monospace;
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}
  font-family: 'Trebuchet MS', 'Malgun Gothic', sans-serif;
.header-note,
.site-footer {
  color: var(--muted);
}

.hero {
  position: relative;
  font-family: 'Courier New', monospace;
  padding: 108px 0 78px;
  border-bottom: 1px solid var(--ink);
}

.hero::after {
  position: absolute;
  right: 4%;
  bottom: 58px;
  font-family: 'Courier New', monospace;
  height: 112px;
  border-radius: 50%;
  background: var(--lime);
  content: '';
  z-index: -1;
}

  font-family: 'Courier New', monospace;
  margin: 0 0 24px;
  color: #6b8625;
  font-weight: 500;
}

h1,
h2,
p {
  font-family: 'Trebuchet MS', 'Malgun Gothic', sans-serif;
}

h1 {
  max-width: 720px;
  margin-bottom: 28px;
  font-size: clamp(4.2rem, 12vw, 9.5rem);
  line-height: .9;
  letter-spacing: -.08em;
  font-weight: 800;
}

.intro {
  max-width: 530px;
  margin-bottom: 13px;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  line-height: 1.55;
  font-weight: 700;
  letter-spacing: -.04em;
}

.affiliation {
  margin-bottom: 0;
  color: var(--muted);
  font-size: .95rem;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 9%;
}

.section-block {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 20px;
  min-height: 220px;
  padding: 36px 0 40px;
  border-bottom: 1px solid var(--line);
}

.section-index {
  margin: 5px 0 0;
  color: #6b8625;
}

h2 {
  margin-bottom: 22px;
  font-size: 1.55rem;
  letter-spacing: -.05em;
}

.body-copy {
  max-width: 390px;
  margin-bottom: 0;
  color: #4f5b52;
  font-size: .98rem;
  line-height: 1.9;
  word-break: keep-all;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 10px 14px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--blue);
  font-size: .9rem;
  font-weight: 700;
}

.course-card {
  display: flex;
  flex-direction: column;
  gap: 17px;
  width: fit-content;
  min-width: min(100%, 275px);
  margin-bottom: 0;
  padding: 20px;
  border: 1px solid var(--ink);
  background: #fffdf5;
  font-size: .98rem;
  font-weight: 700;
}

.course-card span {
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: .65rem;
  font-weight: 400;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.contact-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 15px;
}

.contact-links a {
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  font-family: 'DM Mono', monospace;
  font-size: .82rem;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.contact-links a:hover,
.contact-links a:focus-visible {
  color: #6b8625;
  border-color: #6b8625;
}

.contact-links span {
  margin-left: 7px;
  font-family: 'Manrope', sans-serif;
  font-size: 1rem;
}

.site-footer {
  min-height: 94px;
  border-bottom: 0;
}

@media (max-width: 700px) {
  .page-shell {
    width: min(100% - 32px, 560px);
  }

  .site-header {
    height: 72px;
  }

  .header-note {
    font-size: .58rem;
  }

  .hero {
    min-height: 410px;
    padding: 82px 0 60px;
  }

  .hero::after {
    right: 2%;
    bottom: 50px;
    width: 76px;
    height: 76px;
  }

  h1 {
    font-size: clamp(4rem, 22vw, 7rem);
  }

  .content-grid {
    display: block;
  }

  .section-block {
    min-height: auto;
    padding: 30px 0 34px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    min-height: 100px;
  }
}