:root {
  color-scheme: light;
  --ink: #111111;
  --paper: #f2f1ec;
  --acid: #eaff2b;
  --muted: #6d6d69;
  --line: rgba(17, 17, 17, 0.22);
  font-family: Arial, "Helvetica Neue", "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 4%, rgba(234, 255, 43, 0.32), transparent 25rem),
    var(--paper);
  min-height: 100vh;
}

a { color: inherit; }

.page-shell {
  width: min(100%, 1120px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px clamp(20px, 4vw, 52px) 34px;
  display: flex;
  flex-direction: column;
}

.masthead {
  display: flex;
  align-items: center;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.brand-mark {
  width: 18px;
  aspect-ratio: 1;
  display: inline-block;
  background: var(--acid);
  border: 2px solid var(--ink);
}

main { flex: 1; }

.intro {
  padding: clamp(64px, 11vw, 132px) 0 clamp(48px, 8vw, 90px);
}

.eyebrow {
  grid-column: 1 / -1;
  margin: 0 0 22px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

h1 {
  margin: 0;
  font-size: clamp(46px, 8vw, 92px);
  font-weight: 500;
  letter-spacing: -0.065em;
  line-height: 0.98;
  white-space: nowrap;
}

.links { border-top: 1px solid var(--ink); }

.link-row {
  position: relative;
  min-height: 128px;
  padding: 24px 16px 24px 4px;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 52px 1fr auto;
  gap: 20px;
  align-items: center;
  text-decoration: none;
  overflow: hidden;
  isolation: isolate;
}

.link-row::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--acid);
  transform: translateX(-101%);
  transition: transform 320ms cubic-bezier(.2,.8,.2,1);
}

.link-row:hover::before,
.link-row:focus-visible::before { transform: translateX(0); }

.index {
  align-self: start;
  padding-top: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
}

.link-copy { display: grid; gap: 8px; }
.link-copy strong {
  font-size: clamp(25px, 4vw, 44px);
  font-weight: 500;
  letter-spacing: -0.045em;
}
.link-copy small { color: var(--muted); font-size: 14px; line-height: 1.5; }
.arrow { font-size: 30px; transition: transform 180ms ease; }
.link-row:hover .arrow { transform: translate(4px, -4px); }

.contact {
  margin: clamp(70px, 10vw, 120px) 0;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 24px;
  border-top: 1px solid var(--ink);
  padding-top: 18px;
}
.contact p { margin: 0; font-size: 13px; font-weight: 800; }
.contact a {
  font-size: clamp(25px, 4vw, 46px);
  letter-spacing: -0.04em;
  text-decoration-thickness: 1px;
  text-underline-offset: 8px;
}

footer {
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

@media (max-width: 680px) {
  .page-shell {
    padding: 14px 14px 20px;
  }

  .masthead {
    padding-bottom: 11px;
  }

  .brand {
    gap: 8px;
    font-size: 11px;
  }

  .brand-mark {
    width: 14px;
    border-width: 1.5px;
  }

  .intro {
    padding: 28px 0 24px;
  }

  .eyebrow {
    margin-bottom: 10px;
    font-size: 9px;
  }

  h1 {
    font-size: clamp(28px, 8.2vw, 38px);
    line-height: 1;
  }

  .link-row {
    min-height: 68px;
    grid-template-columns: 22px 1fr 20px;
    gap: 7px;
    padding: 9px 0;
  }

  .index {
    padding-top: 3px;
    font-size: 9px;
  }

  .link-copy {
    gap: 3px;
  }

  .link-copy strong {
    font-size: clamp(19px, 5.7vw, 25px);
    line-height: 1.05;
  }

  .link-copy small {
    font-size: 10px;
    line-height: 1.3;
  }

  .arrow {
    font-size: 19px;
  }

  .contact {
    grid-template-columns: 1fr;
    gap: 7px;
    margin: 32px 0;
    padding-top: 11px;
  }

  .contact p {
    font-size: 9px;
  }

  .contact a {
    font-size: clamp(21px, 6vw, 27px);
    overflow-wrap: anywhere;
  }

  footer {
    padding-top: 12px;
    font-size: 9px;
    line-height: 1.4;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before { scroll-behavior: auto !important; transition: none !important; }
}