:root {
  --accent: #0f766e;
  --muted: #6b7280;
  font-family: 'Noto Sans JP', sans-serif;
}

/* ベース */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  line-height: 1.6;
  font-family: 'Noto Sans JP', sans-serif;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 40px;
}

/* ヒーローセクション */
.hero {
  display: flex;
  gap: 32px;
  align-items: center;
  padding: 48px 0;
}

.hero .left {
  flex: 1;
}

/* アイキャッチ用小見出し（eyebrow） */
.hero-eyebrow {
  color: var(--accent);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  text-transform: uppercase;
  position: relative;
}

.hero-eyebrow::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin-top: 6px;
  border-radius: 2px;
}

/* メインタイトル */
.hero-title {
  font-size: 48px;
  font-weight: 900;
  line-height: 1.2;
  margin: 0 0 20px 0;
  color: var(--accent);
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.lead {
  color: var(--muted);
  font-size: 16px;
  margin-bottom: 20px;
  line-height: 1.8;
}

img.responsive {
  width: 100%;
  height: auto;
  border-radius: 12px;
}

/* ボタン */
.cta {
  display: inline-block;
  background: var(--accent);
  color: #fff !important;
  padding: 12px 20px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 3px 8px rgba(15, 118, 110, 0.3);
  transition: text-decoration 0.2s ease;
}

/* マウスが乗った時（ホバー時）だけ下線を表示 */
.cta:hover {
  text-decoration: underline;
  color: #fff !important;
}

/* セクション共通 */
.section {
  padding: 36px 0;
}

h2 {
  font-size: 28px;
  margin-top: 32px;
  margin-bottom: 16px;
  line-height: 1.4;
}

/* --- カード --- */
.card {
  background: #fff;
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.16);
  margin: 0 auto 10px auto;
  width: 100%;
  max-width: 95%;
  box-sizing: border-box;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card-img {
  display: block !important;
  margin: 0 auto 10px auto !important;
  max-width: 100% !important;
  height: auto !important;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin: 36px 0;
  padding: 0 12px 36px 12px;
  box-sizing: border-box;
}

.cards .card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.28);
}

.card h3 {
  margin-top: 0;
  color: var(--accent);
  font-weight: 700;
}

.price {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 12px;
}

.card-center-img {
  text-align: left;
}

.card-center-img .card-img {
  display: block;
  margin: 0 auto 12px auto;
  width: 80%;
  max-width: 400px;
  height: auto;
  border-radius: 12px;
}

.card-center-img p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
  margin: 0;
}

/* 図解セクション */
.diagram {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 20px;
  text-align: center;
  padding: 0 12px 36px 12px;
  box-sizing: border-box;
}

.diagram-item {
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.14);
  margin: 0 auto 0px auto;
  max-width: 95%;
  box-sizing: border-box;
}

.diagram-item img {
  width: 80px;
  height: 80px;
  margin-bottom: 12px;
}

.diagram-item h4 {
  color: var(--accent);
  margin-bottom: 8px;
  font-size: 18px;
  font-weight: 700;
}

/* フッター */
footer {
  border-top: 1px solid #e5e7eb;
  margin-top: 40px;
  padding: 24px 0;
  font-size: 14px;
  color: var(--muted);
}

footer div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

/* レスポンシブ */
@media (max-width: 800px) {
  .hero {
    flex-direction: column;
  }
  .hero-eyebrow {
    font-size: 16px;
    letter-spacing: 0.08em;
  }
  .hero-title {
    font-size: 32px;
    line-height: 1.3;
  }
  h2 {
    font-size: 22px;
    margin-top: 24px;
  }
  .cta {
    width: 100%;
    text-align: center;
  }
  .cards {
    grid-template-columns: 1fr;
    padding: 0 16px 26px 16px;
  }
  .card {
    max-width: 90%;
  }
  .diagram {
    grid-template-columns: 1fr;
    padding: 0 16px 26px 16px;
  }
  .diagram-item {
    max-width: 90%;
  }
}

/* プラン用カード */
.cards .plan-card {
  max-width: 48%;
  margin: 0 ;
　padding: 16px;
  font-size: 13px;
  margin: 0 auto 10px 0px; !important;
}

/* プラン画像 */
.cards .plan-card .card-img {
  width: 80%;
  height: auto;
  object-fit: cover;
}

/* スマホではプランカードを全幅にする */
@media (max-width: 800px) {
  .cards .plan-card {
    max-width: 100% !important;
    width: 100% !important;
    margin: 0 0 16px 0 !important;
  }
}