* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "Noto Sans KR", sans-serif;
}

.header {
  background: rgba(248, 250, 252, 0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}

.header-scrolled {
  background: rgba(248, 250, 252, 0.92);
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.08);
}