/* ─── NAV ─── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo img { height: 22px; }
.nav-items {
  display: flex;
  align-items: center;
  gap: 48px;
}
.nav-items a {
  color: var(--dark);
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  transition: color 0.2s;
}
.nav-items a:hover { color: var(--blue); }
.nav-btn {
  background: var(--blue);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
  transition: opacity 0.2s;
}
.nav-btn:hover { opacity: 0.88; }

/* ─── 햄버거 버튼 (데스크톱에서는 숨김) ─── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 0 auto;
  border-radius: 2px;
  background: var(--dark);
  transition: transform 0.25s, opacity 0.2s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }