/* -----------------------------------------------------------
* アコーディオン
* ----------------------------------------------------------- */
.c-accordion__item {
  border-bottom: 1px solid var(--color-gray-3);
}

.c-accordion.--flow .c-accordion__item {
  border-bottom: none;
  margin-bottom: 2.0rem;
}

.c-accordion__label {
  color: var(--color-base-2);
  text-align: center;
  font-weight: 700;
  font-size: clamp(2.0rem, 0.59vw + 1.54rem, 2.4rem);
  margin-bottom: clamp(2.0rem, 4.76vw - 0.38rem, 4.0rem);
}

.c-accordion__title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  list-style: none;
  font-weight: bold;
  padding: clamp(2.0rem, 1.9vw + 1.1rem, 2.8rem) 0;
}
.c-accordion__title::-webkit-details-marker { display: none; }

.c-accordion.--flow .c-accordion__title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  list-style: none;
  font-weight: bold;

  padding: 2.8rem 4.0rem;
  border-radius: 2.0rem;
  background-color: var(--color-base-5);
}

@media (max-width: 767px) {
  .c-accordion.--flow .c-accordion__title {
    padding: 1.0rem 1.6rem;
  }
}



.c-accordion__title-text,
.c-accordion__description {
  font-size: clamp(1.6rem, 0.59vw + 1.14rem, 2.0rem);
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 140%;
}
.c-accordion__description {
  font-weight: 400;
}

.c-accordion.--flow .c-accordion__description {
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 180%;
  padding: 0 5.0rem;
}

@media (max-width: 767px) {
  .c-accordion.--flow .c-accordion__description {
    padding: 0 1.0rem;
  }
}



.c-accordion__icon-q,
.c-accordion__icon-a {
  color: var(--color-base-2);
  font-weight: 700;
  font-size: clamp(2.4rem, 0.59vw + 1.94rem, 2.8rem);
  font-family: var(--font-accent);
  margin-right: clamp(1.6rem, 1.19vw + 1.03rem, 2.4rem);
}

/* アイコン: 汎用的なプラスマイナス */
.c-accordion__icon {
  position: relative;
  margin-left: auto;
  width: 2.0rem;
  height: 2px;
  border-radius: 8px;
  background: var(--color-base-2);
  flex-shrink: 0;
}

/* --- トグルの回転 --- */
.c-accordion__icon::before {
  content: "";
  position: absolute;
  inset: 0;
  background: currentColor;
  transform: rotate(90deg);
  /* ボディの height transition と同じ設定にする */
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1); 
}

/* クラスが付与されたら即座に回転を開始する */
.c-accordion__item.is-open .c-accordion__icon::before {
  transform: rotate(0deg);
}

/* ボディ（開閉部分） */
.c-accordion__body {
  overflow: hidden;
  height: 0;
  opacity: 0;
  visibility: hidden; /* 閉じている間は計算から外す */
  
  /* will-change を指定してGPU加速を促す（カクつき防止） */
  will-change: height, opacity;
  
  /* イージングを linear に近づけると違和感が減ります */
  transition: 
      height 0.4s cubic-bezier(0.25, 1, 0.5, 1),
      opacity 0.3s ease,
      visibility 0.4s;
}

/* 開いている時の状態 */
.c-accordion__item.is-open .c-accordion__body {
  opacity: 1;
  visibility: visible;
}

/* 余白は内部の div で完全に分離する */
.c-accordion__body-inner {
  display: flex;
  justify-content: space-between;
  align-items: start;
  padding: clamp(2.0rem, 1.9vw + 1.1rem, 2.8rem) 0;
}


.c-accordion__description {
  flex: 1;
}