/* ---- グローバル ---- */
body {
    font-family: sans-serif;
    margin: 0;
  padding: 0;
}


/* --------------------------
   左アイコン付き見やすいリスト
-------------------------- */
.feature-list {
  padding: 0;
  margin: 0 auto 2em auto;
  max-width: 600px;
  position: relative;
}

.feature-list li {
  color: #fff;
  background: linear-gradient(90deg, #64dad7 0%, #81d0cb 100%);
  line-height: 1.85;
  padding: 0.72em 1.2em 0.72em 2.6em;
  border-bottom: 2px solid #fff;
  border-radius: 1.1em;

  font-size: 1.13em;
  list-style-type: none!important;
  position: relative;
  margin-bottom: 0.75em;
  box-shadow: 0 4px 18px 0 #1bbfc520;
  letter-spacing: 0.01em;
  transition: background 0.18s, color 0.16s;
  cursor: pointer;
  word-break: break-word;
  white-space: pre-line;
}
.feature-list li:last-child {
  border-bottom: none;
}

.feature-list li:hover {
  background: linear-gradient(90deg, #50cfc9 0%, #58c7bc 100%);
  color: #fff;
}
.feature-list li.active,
.feature-list li.selected {
  background: linear-gradient(90deg, #38beb7 0%, #13a5a0 100%);
  color: #fff;
}

/* 詳細カード */
.detail-item {
  border-radius: 1.3em;
  box-shadow: 0 4px 24px rgba(0,183,230,0.11);
  background: #fff;
  max-width: 96vw;
  padding: 2.1em 1.5em 1.8em 1.5em;
  margin: 0 auto;
  text-align: center;
  margin-bottom: 2em;
}
.detail-item h2 {
  font-size: 1.5em;
  margin-bottom: 0.5em;
  font-weight: bold;
  color: #015e8a;
}
.detail-item p {
  color: #235;
  font-size: 1.1em;
}
.detail-item img {
  margin: 1.1em auto 0.5em;
  border-radius: 0.7em;
  max-width: 80vw;
  max-height: 35vh;
  box-shadow: 0 2px 12px 0 #b5e5f833;
}

/* 戻るボタン */
.back {
  display: inline-block;
  margin-bottom: 18px;
  padding: 0.6em 1.6em;
  border-radius: 2em;
  border: 1.5px solid #81d0cb;
  background: #fff;
  color: #23a69a;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.14s, color 0.14s, border 0.14s;
  font-size: 1.02em;
  box-shadow: 0 2px 10px 0 #01bbef12;
}
.back:hover, .back:focus {
  background: #e0f5ff;
  color: #008cd1;
  border-color: #008cd1;
}

/* スマホ対応 */
@media (max-width: 600px) {
  .feature-list {
    max-width: 98vw;
  }
  .feature-list li {
    font-size: 1em;
    padding: 0.72em 0.6em 0.72em 2.2em;
    border-radius: 0.72em;
  }
  .feature-list li::before {
    left: 0.7em;
    font-size: 1em;
  }
  .detail-item {
    padding: 1.3em 0.6em 1.1em 0.6em;
  }
}

/* スクロールバー消し */
.feature-list {
  scrollbar-width: none;
}
.feature-list::-webkit-scrollbar {
  display: none;
}

/* TOPバナーリスト全体 */
.banner-list {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  margin-top: 28px;
  padding-left: 0;
}

/* バナー（画像のみ。テキストなし！） */
.banner-button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: filter 0.16s, transform 0.19s, box-shadow 0.17s;
  outline: none;
  box-shadow: none;
}

/* バナー画像本体 */
.banner-button img {
    width: 300px;
    height: 170px;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: 0 4px 12px rgba(34, 88, 112, 0.15), 0 2px 8px rgba(0,0,0,0.09);
  background: #eaf6f9;
  transition: 
    transform 0.22s cubic-bezier(.27,1.42,.54,.99),
    box-shadow 0.18s,
    filter 0.18s;
  display: block;
}

/* マウスオン時：拡大＆シャドウ・色も少しリッチに */
.banner-button:hover img,
.banner-button:focus img {
  transform: scale(1.07) translateY(-4px);
  /*box-shadow: 0 8px 24px rgba(0,180,255,0.17), 0 8px 38px 0 #55d4ff40;
  filter: brightness(1.07) contrast(1.04) saturate(1.12);*/
  z-index: 2;
}

/* ホバー時に画像の外側も少し明るく光る 
.banner-button:focus-visible img {
  outline: 3px solid #03b7e6;
  outline-offset: 2px;
}*/

/* liリストマーカーを消す */
.banner-list li {
  list-style: none;
}

/* スマホ対応 */
@media (max-width: 900px) {
  .banner-button img {
    width: 85vw;
    max-width: 360px;
    height: auto;
    min-height: 100px;
  }
  .banner-list {
    gap: 18px;
  }
}
@media (max-width: 600px) {
  .banner-button img {
    width: 90vw;
    max-width: 99vw;
    height: 50vw;
    min-height: 66px;
  }
  .banner-list {
    gap: 20px;
  }
}