body{
  font-family: sans-serif;
  margin:0;
  padding:0;
  color: var(--txt);

  /* ✅ 배경 이미지 cover */
  background-image: url("/static/background/office2.jpeg");
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;

  /* (선택) 너무 튀면 살짝 어둡게/톤다운 */
  /* background-color: #0b0f16; */
}