.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(17, 24, 39, 0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 9.2rem;
  gap: 3rem;
}
.logo a { font-size: 3.2rem; font-weight: 800; letter-spacing: 0.04em; }
.gnb { flex: 1; }
.gnb-list {
  display: flex;
  justify-content: center;
  gap: 4.4rem;
}
.gnb-list > li { position: relative; }
.gnb-list > li > a {
  display: inline-flex;
  align-items: center;
  height: 9.2rem;
  font-weight: 700;
}
.depth2 {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 18rem;
  padding: 1.6rem;
  border-radius: 1.8rem;
  background: #fff;
  box-shadow: 0 2rem 4rem rgba(17,24,39,0.08);
  opacity: 0;
  visibility: hidden;
  transition: 0.25s ease;
}
.depth2 li + li { margin-top: 1rem; }
.depth2 a { display: block; padding: 0.4rem 0; color: var(--color-muted); }
.gnb-list > li:hover .depth2,
.gnb-list > li:focus-within .depth2 { opacity: 1; visibility: visible; }
.header-util { display: flex; gap: 2rem; font-weight: 700; }
.menu-btn { width: 4.8rem; height: 4.8rem; position: relative; }
.menu-btn span {
  position: absolute;
  left: 0.8rem;
  width: 3.2rem;
  height: 0.2rem;
  background: var(--color-dark);
  transition: 0.3s ease;
}
.menu-btn span:nth-child(1) { top: 1.5rem; }
.menu-btn span:nth-child(2) { top: 2.3rem; }
.menu-btn span:nth-child(3) { top: 3.1rem; }
.menu-btn.active span:nth-child(1) { transform: rotate(45deg); top: 2.3rem; }
.menu-btn.active span:nth-child(2) { opacity: 0; }
.menu-btn.active span:nth-child(3) { transform: rotate(-45deg); top: 2.3rem; }
.mobile-menu {
  display: none;
  border-top: 1px solid rgba(17, 24, 39, 0.06);
  background: #fff;
}
.mobile-menu.open { display: block; }
.mobile-menu-inner { padding: 1rem 1.6rem 2.4rem; }
.mobile-toggle {
  width: 100%;
  min-height: 5.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.4rem;
  font-weight: 700;
  border-bottom: 1px solid var(--color-line);
}
.mobile-toggle::after { content: '+'; font-size: 2rem; }
.mobile-nav li.open > .mobile-toggle::after { content: '−'; }
.mobile-nav ul { display: none; padding: 1rem 0 1.2rem 0.6rem; }
.mobile-nav li.open ul { display: block; }
.mobile-nav ul li a { display: block; padding: 0.8rem 0; color: var(--color-muted); }
.mobile-links { display: flex; gap: 1.2rem; margin-top: 2rem; }
.mobile-links a {
  flex: 1;
  min-height: 4.8rem;
  border-radius: 999px;
  background: var(--color-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.site-footer { padding: 4rem 0; border-top: 1px solid var(--color-line); background: #fbfcfd; }
.footer-inner { display: flex; justify-content: space-between; gap: 3rem; }
.footer-left strong { display: block; margin-bottom: 1rem; font-size: 2rem; }
.footer-left p + p { margin-top: 0.6rem; color: var(--color-muted); }
.footer-right { display: flex; flex-wrap: wrap; gap: 1.6rem 2.4rem; align-content: flex-start; font-weight: 700; }

@media (max-width: 1279px) {
  .gnb-list { gap: 2.6rem; }
}

@media (max-width: 767px) {
  .header-inner { height: 7.2rem; }
  .logo a { font-size: 2.8rem; }
  .footer-inner { flex-direction: column; }
}