body {
  margin: 0;
  display: flex;
  justify-content: center;
  background: black;
}

/* 페이지 */
#page {
  height: 100vh;              /* 화면 세로 꽉 채움 */
  aspect-ratio: 210 / 297;    /* A5 비율 유지 */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
}

#story-text {
  position: absolute;
  bottom: 120px;  /* 선택지 위에 위치 */
  left: 20px;
  right: 20px;

  color: white;
  text-shadow: 0 0 5px black;
  font-size: 16px;
  line-height: 1.6;
}

#choices {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
}

/* 버튼을 텍스트처럼 */
.choice-btn {
  display: block;
  width: 100%;
  margin-top: 8px;

  background: none;
  border: none;
  color: white;
  font-size: 15px;
  text-align: left;

  cursor: pointer;
  padding: 0;
}

/* 호버 효과 (선택 느낌) */
.choice-btn:hover {
  text-decoration: underline;
}

#story-text, .choice-btn {
  mix-blend-mode: difference;
  color: white;
}