/* =========================================================
   REASON：なぜ月額2,980円で続けられるのか
   想い（共感）＋ 仕組み（裏付け）＋ 追加費用なしの明言
   ========================================================= */

.reason-section {
  background: linear-gradient(180deg, #ffffff 0%, #f3f8f6 100%);
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  box-sizing: border-box;
  padding: 80px 20px;
}

.reason-inner {
  max-width: 1040px;
  margin: 0 auto;
}

/* ---------- リード（想い） ---------- */
.reason-lead {
  text-align: center;
  margin: 0 auto 36px;
  max-width: 760px;
}

.reason-lead p {
  font-size: 1.15rem;
  line-height: 2;
  color: #364c63;
  margin: 0 0 18px;
}

.reason-lead p:last-child {
  margin-bottom: 0;
}

.reason-lead strong {
  color: #1D9E75;
  font-weight: 800;
}

/* ---------- ブリッジ文 ---------- */
.reason-bridge {
  text-align: center;
  font-size: 1.25rem;
  font-weight: 800;
  color: #1b2f45;
  margin: 0 0 36px;
  line-height: 1.6;
}

/* ---------- 仕組み3カード ---------- */
.reason-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 0 0 40px;
}

.reason-card {
  background: #ffffff;
  border: 1px solid #e4efe9;
  border-radius: 16px;
  padding: 32px 24px 28px;
  box-shadow: 0 6px 20px rgba(14, 94, 69, 0.06);
  text-align: center;
  display: flex;
  flex-direction: column;
}

.reason-card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  color: #1D9E75;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reason-card-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.reason-card-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: #1b2f45;
  margin: 0 0 12px;
  line-height: 1.5;
}

.reason-card-text {
  font-size: 1rem;
  line-height: 1.85;
  color: #5a6b7a;
  margin: 0;
}

/* ---------- 結び ---------- */
.reason-conclusion {
  text-align: center;
  font-size: 1.15rem;
  line-height: 1.9;
  color: #364c63;
  margin: 0 0 32px;
}

.reason-conclusion strong {
  color: #0E5E45;
  font-weight: 800;
}

/* ---------- 追加費用なしの明言（信頼ボックス） ---------- */
.reason-promise {
  background: #e9f7f1;
  border: 1px solid rgba(29, 158, 117, 0.3);
  border-left: 6px solid #1D9E75;
  border-radius: 12px;
  padding: 28px 32px;
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.reason-promise-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: #0E5E45;
  margin: 0 0 10px;
  line-height: 1.6;
}

.reason-promise-text {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #2c4a3f;
  margin: 0;
}

.reason-promise-text strong {
  font-weight: 800;
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 900px) {
  .reason-section { padding: 64px 18px; }
  .reason-grid { gap: 18px; }
}

@media (max-width: 700px) {
  .reason-section { padding: 48px 16px; }
  .reason-lead { text-align: left; }
  .reason-lead p { font-size: 1rem; line-height: 1.9; text-align: left; }
  .reason-promise { text-align: left; }
  .reason-bridge { font-size: 1.1rem; margin-bottom: 28px; }
  .reason-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
  }
  .reason-card { padding: 26px 22px 24px; }
  .reason-card-icon { width: 50px; height: 50px; margin-bottom: 14px; }
  .reason-card-title { font-size: 1.1rem; }
  .reason-card-text { font-size: 0.95rem; }
  .reason-conclusion { font-size: 1.02rem; }
  .reason-promise { padding: 22px 20px; }
  .reason-promise-title { font-size: 1.12rem; }
  .reason-promise-text { font-size: 0.98rem; }
}