/* ========================================
   なぜDXが失敗するのか - ミニマル版
   Stripe/Notion系のクリーンなデザイン
======================================== */

/* Section */
.failure {
  padding: 80px 24px 96px;
  background: linear-gradient(180deg, #f9fbfd 0%, #f5f8fc 100%);
}

.failure__title {
  text-align: center;
  font-size: 38px;
  letter-spacing: -0.01em;
  margin: 0;
  color: #0b1b3a;
  font-weight: 700;
}

.failure__lead {
  text-align: center;
  margin: 16px auto 0;
  color: #4a5f7a;
  font-size: 18px;
  font-weight: 400;
  max-width: 680px;
  line-height: 1.6;
}

/* Grid - 1行4列レイアウト */
.failure__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  max-width: 1400px;
  margin: 56px auto 0;
  align-items: stretch;
}

/* Card - クリーンなホワイトカード */
.fcard {
  background: #ffffff;
  border: 1px solid rgba(220, 230, 245, 0.6);
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(15, 37, 68, 0.04);
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.fcard:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(15, 37, 68, 0.08);
  border-color: rgba(200, 215, 240, 0.8);
}

/* Visual area - ミニマルな背景 */
.fcard__visual {
  background: linear-gradient(135deg, #f8fafc 0%, #f3f6fa 100%);
  padding: 20px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
}

.fsvg {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 10;
  object-fit: contain;
}

/* Body - シンプルな説明エリア */
.fcard__body {
  padding: 20px 20px 24px;
  text-align: left;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.fcard__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.fcard__icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 18px;
  color: #fff;
  flex: 0 0 auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* アイコン色 - 各カード1色 */
.ficon--blue {
  background: linear-gradient(135deg, #4a90e2, #5ba3f5);
}

.ficon--orange {
  background: linear-gradient(135deg, #ff9a56, #ffb380);
}

.ficon--purple {
  background: linear-gradient(135deg, #8b7fc8, #a599d6);
}

.ficon--green {
  background: linear-gradient(135deg, #10b981, #34d399);
}

.fcard__h {
  font-size: 16px;
  margin: 0;
  color: #0b1b3a;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.fcard__p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #4a5f7a;
}

/* List style - シンプルな箇条書き */
.fcard__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.fcard__list li {
  font-size: 13px;
  line-height: 1.7;
  color: #4a5f7a;
  margin-bottom: 8px;
  padding-left: 18px;
  position: relative;
}

.fcard__list li:last-child {
  margin-bottom: 0;
}

.fcard__list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: #8b9bb3;
  font-weight: 700;
  font-size: 16px;
}

/* Responsive */
@media (max-width: 1024px) {
  .failure {
    padding: 64px 20px 80px;
  }

  .failure__title {
    font-size: 32px;
  }

  .failure__lead {
    font-size: 17px;
  }

  .failure__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    margin-top: 48px;
  }

  .fcard__visual {
    min-height: 160px;
    padding: 20px 16px;
  }

  .fcard__h {
    font-size: 15px;
  }
}

@media (max-width: 768px) {
  .failure {
    padding: 56px 16px 64px;
  }

  .failure__title {
    font-size: 28px;
  }

  .failure__lead {
    font-size: 16px;
  }

  .failure__grid {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 40px;
  }

  .fcard__visual {
    min-height: 180px;
    padding: 20px 16px;
  }

  .fcard__body {
    padding: 18px 20px 22px;
  }

  .fcard__icon {
    width: 34px;
    height: 34px;
    font-size: 17px;
  }

  .fcard__h {
    font-size: 16px;
  }

  .fcard__p {
    font-size: 13px;
  }

  .fcard__list li {
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .failure {
    padding: 48px 12px 56px;
  }

  .failure__title {
    font-size: 24px;
  }

  .failure__lead {
    font-size: 15px;
  }

  .failure__grid {
    gap: 16px;
    margin-top: 32px;
  }

  .fcard__visual {
    min-height: 160px;
    padding: 16px 12px;
  }

  .fcard__body {
    padding: 16px 18px 20px;
  }

  .fcard__head {
    gap: 8px;
    margin-bottom: 10px;
  }

  .fcard__icon {
    width: 30px;
    height: 30px;
    font-size: 15px;
  }

  .fcard__h {
    font-size: 15px;
  }

  .fcard__p {
    font-size: 12px;
    line-height: 1.7;
  }

  .fcard__list li {
    font-size: 12px;
    margin-bottom: 7px;
    padding-left: 18px;
  }

  .fcard__list li::before {
    font-size: 14px;
  }
}