@charset "UTF-8";
.scroll-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  right: -60px; /* 初期は隠す */
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 8;
  transition: right 0.3s ease;
}

.scroll-nav.visible {
  right: 10px; /* 表示状態 */
}
.scroll-nav button {
  writing-mode: sideways-lr; /* 縦書き風 */
  transform: rotate(180deg);
  padding: 20px 10px;
  background: none;
  color: #f87254;
  font-size: 30px;
  border: none;
  cursor: pointer;
  transition: 0.5s;
  display: flex;
  align-items: center;
}

.scroll-nav button:hover {
  color:#ffa74d;
}
.double-angle-up {
  position: relative;
  width: 1em; /* サイズ調整 */
  height: 1em;
}

.double-angle-up::before,
.double-angle-up::after {
  content: "";
  position: absolute;
  left: 45%;
  top: 0;
  width: 0.3em;
  height: 0.3em;
  border-top: 0.15em solid #f87254;
  border-left: 0.15em solid #f87254;
  transform: translateX(-50%) rotate(-135deg); /* ← 上向き */
}

.double-angle-up::after {
  top: 0.4em; /* 2つ目を少し下にずらす */
}

.double-angle-down {
  position: relative;
  width: 1em; /* サイズ調整 */
  height: 1em;
}

.double-angle-down::before,
.double-angle-down::after {
  content: "";
  position: absolute;
  left: 45%;
  bottom: 0;
  width: 0.3em;
  height: 0.3em;
  border-top: 0.15em solid #f87254;
  border-left: 0.15em solid #f87254;
  transform: translateX(-50%) rotate(45deg); /* ← 下向き */
}

.double-angle-down::after {
  bottom: 0.4em; /* 2つ目を少し上にずらす */
}
.scroll-nav p {
    font-size: 20px;
    margin: 10px 0;
}
.double-angle-up::before,
.double-angle-up::after,
.double-angle-down::before,
.double-angle-down::after {
  border-color: currentColor; /* ← 親の文字色を使う */
}