/* 헤더, 네비게이션, 푸터 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-veil);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled { border-bottom-color: var(--line); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 92px;
}

.brand {
  font-family: var(--serif);
  font-size: 23px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.nav { display: flex; gap: 46px; }

.nav a {
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ink);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.nav a:hover { border-bottom-color: var(--ink); }
.nav a.is-active { border-bottom-color: var(--brick); }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 0; background: none; cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block; width: 22px; height: 1px;
  background: var(--ink); margin: 6px auto;
  transition: transform .25s, opacity .25s;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 72px 0 44px;
  background: var(--bg);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}
.footer-brand { font-family: var(--serif); font-size: 21px; margin-bottom: 14px; }
.footer-col h4 {
  font-family: var(--sans); font-size: 11px;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--ink-soft); margin-bottom: 16px;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { font-size: 14px; margin-bottom: 10px; color: var(--ink-soft); }
.footer-col a:hover { color: var(--ink); }
.footer-col .sns-link {
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: border-color .2s;
}
.footer-col .sns-link:hover { border-bottom-color: var(--ink); }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 16px;
  font-size: 12px; color: var(--ink-soft);
  letter-spacing: 0.06em;
  border-top: 1px solid var(--line); padding-top: 26px;
}

@media (max-width: 1023px) {
  .header-inner { height: 76px; }
  .nav { gap: 30px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 767px) {
  .nav-toggle { display: block; }
  .header-cta { display: none; }
  .nav {
    position: fixed;
    inset: 76px 0 auto 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: 8px 22px 26px;
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 15px 0; border-bottom: 1px solid var(--line); }
  .nav a:last-child { border-bottom: 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom { flex-direction: column; }
}