:root {
  --cream: #F7F4EC;
  --white: #FFFEFA;
  --beige: #F0EDE2;
  --green-dark: #3E4A36;
  --green-btn: #5A7050;
  --footer: #2E3828;
  --terracotta: #A8643C;
  --text-sub: #8C8577;
  --text-faint: #A09A8C;
  --border: #E8E2D4;
  --serif: Georgia, "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: -apple-system, "Hiragino Sans", "Yu Gothic", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--serif);
  color: var(--green-dark);
  line-height: 1.7;
  background: var(--cream);
}

img { max-width: 100%; height: auto; display: block; }

.section { padding: 64px 24px; text-align: center; }
.section-title { font-size: 28px; font-weight: normal; margin-bottom: 12px; }
.section-sub { font-size: 14px; color: var(--text-sub); margin-bottom: 32px; }
.section-sub em { color: var(--terracotta); font-style: normal; }

/* ① ヒーロー */
.hero { background: var(--cream); padding: 72px 24px 80px; text-align: center; }
.hero-inner { max-width: 640px; margin: 0 auto; }
.brand { width: 210px; max-width: 62%; height: auto; margin: 0 auto 16px; }
.beta-badge {
  display: inline-block; font-family: var(--sans); font-size: 11px; letter-spacing: 2px;
  color: var(--terracotta); background: var(--border); padding: 4px 14px; border-radius: 12px; margin-bottom: 20px;
}
.hero-title { font-size: 40px; font-weight: normal; line-height: 1.5; margin-bottom: 16px; }
.hero-title em { color: var(--terracotta); font-style: normal; }
.hero-sub { font-size: 15px; color: var(--text-sub); margin-bottom: 32px; }
.hero-note { font-size: 12px; color: var(--text-faint); margin-top: 12px; }
.hero-img { margin: 32px auto 0; }

/* 共通ボタン */
.btn-primary {
  display: inline-block; background: var(--green-btn); color: #fff; text-decoration: none;
  border-radius: 28px; padding: 14px 36px; font-size: 16px; transition: background 0.2s;
}
.btn-primary:hover { background: #4c5f43; }

/* ② 仕組み */
.section-howto { background: var(--white); border-top: 1px solid var(--border); }
.steps { display: flex; gap: 20px; justify-content: center; max-width: 720px; margin: 0 auto; }
.step { flex: 1; background: var(--cream); border-radius: 14px; padding: 24px 16px; }
.step-icon { font-size: 30px; margin-bottom: 12px; }
.step-title { font-size: 16px; font-weight: normal; margin-bottom: 8px; }
.step-desc { font-size: 13px; color: var(--text-sub); }

/* ③ 成長ストーリー */
.section-growth { background: var(--beige); }
.growth-row { display: flex; gap: 8px; justify-content: center; align-items: flex-end; flex-wrap: wrap; max-width: 760px; margin: 0 auto; }
.growth-img { width: auto; }
.g1 { height: 52px; } .g2 { height: 64px; } .g3 { height: 78px; } .g4 { height: 92px; }
.g5 { height: 106px; } .g6 { height: 120px; } .g7 { height: 134px; } .g8 { height: 150px; }

/* ④ 花の図鑑 */
.section-collection { background: var(--white); border-top: 1px solid var(--border); }
.flowers { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; max-width: 760px; margin: 0 auto; }
.flower { background: var(--cream); border-radius: 12px; padding: 16px; width: 110px; }
.flower img { height: 80px; width: auto; margin: 0 auto; }
.flower figcaption { font-size: 12px; color: var(--green-btn); margin-top: 8px; }
.flower-tbd { border: 2px dashed #C9C2B0; background: transparent; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.flower-tbd-mark { height: 80px; display: flex; align-items: center; justify-content: center; font-size: 34px; color: #C9C2B0; }
.flower-tbd figcaption { color: var(--text-faint); }

/* ⑤ 安心と特徴 */
.section-trust { background: var(--cream); }
.features { display: flex; gap: 24px; justify-content: center; max-width: 760px; margin: 0 auto; }
.feature { flex: 1; }
.feature-title { font-size: 15px; font-weight: normal; margin-bottom: 8px; }
.feature-desc { font-size: 13px; color: var(--text-sub); }

/* ⑥ ダウンロードCTA */
.section-cta { background: var(--green-dark); color: var(--cream); }
.cta-title { font-size: 28px; font-weight: normal; margin-bottom: 10px; }
.cta-note { font-size: 13px; color: #A8B49A; margin-bottom: 24px; }
.cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-download {
  display: inline-block; background: var(--cream); color: var(--green-dark); text-decoration: none;
  border-radius: 28px; padding: 14px 30px; font-size: 15px; transition: opacity 0.2s;
}
.btn-download:hover { opacity: 0.85; }
.btn-disabled {
  display: inline-block; background: transparent; color: #A8B49A; border: 1px solid #5A6B4E;
  border-radius: 28px; padding: 14px 30px; font-size: 15px; cursor: default;
}
.cta-gatekeeper { font-size: 12px; color: #A8B49A; margin-top: 20px; max-width: 520px; margin-left: auto; margin-right: auto; line-height: 1.8; }

/* ⑦ フッター */
.footer { background: var(--footer); padding: 24px; text-align: center; }
.footer-links { font-size: 12px; color: #8C9B7E; }

/* レスポンシブ（モバイル） */
@media (max-width: 640px) {
  .hero-title { font-size: 30px; }
  .section-title { font-size: 22px; }
  .cta-title { font-size: 22px; }
  .steps, .features { flex-direction: column; align-items: center; }
  .step, .feature { width: 100%; max-width: 320px; }
  .g1,.g2,.g3,.g4 { height: 60px; } .g5,.g6,.g7,.g8 { height: 80px; }
}