.button-13 a {
  /* font-family: 'Noto Serif JP', serif; */
  font-size: 14px;
  letter-spacing: 0.1em;
  color: #333;
  font-weight: 600;
  display: block;
  position: relative;
  box-sizing: border-box;
  max-width: 180px;
  text-align: center;
  padding: 4px 16px 4px 0;
  margin: 24px;
  margin-inline: auto;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
/* スマートフォンでのタップ時のハイライト色を無効化 */
-webkit-tap-highlight-color: transparent;
}

.button-13 a::before {
  content: "";
  display: block;
  position: absolute;
  width: 180px;
max-width: 100%;
  height: 1px;
  background: #FF8000;
  bottom: 0;
  transition: all 0.3s;
}

.button-13 a::after {
  content: "";
  display: block;
  position: absolute;
  width: 30px;
  height: 1px;
  background: #FF8000;
  rotate: 40deg;
  right: -3px;
  bottom: 10px;
  transition: all 0.3s;
}

/* アニメーション：PCのホバー(:hover) または スマホのタップ中(:active) */
.button-13 a:hover::after,
.button-13 a:hover::before,
.button-13 a:active::after,
.button-13 a:active::before {
  translate: 20px 0;
  transition: all 0.3s;
}

/* 通常時の文字色を #333 に強制的に設定 */
.button-13 a {
    color: #333 !important;
}

/* 文字色の変更：PCのホバー(:hover) または スマホのタップ中(:active) */
.button-13 a:hover,
.button-13 a:active {
   color: #FF8000 !important;
}