/* ==================================================
   Case Studies Page
================================================== */

.ohtani-case {
  font-family: "Noto Sans JP", sans-serif;
  color: #1e293b;
  line-height: 1.8;
}

.ohtani-case * {
  box-sizing: border-box;
}

.ohtani-case a {
  text-decoration: none;
}

.case-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.case-section {
  padding: 96px 0;
}

.case-gray {
  background: #f7f9fc;
}

.case-title {
  font-size: 40px;
  line-height: 1.4;
  color: #0a2a66;
  text-align: center;
  font-weight: 900;
  margin: 0 0 16px;
}

.case-lead {
  text-align: center;
  color: #64748b;
  font-size: 17px;
  margin: 0 0 48px;
}

.case-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  border-radius: 999px;
  font-weight: 900;
  transition: .25s ease;
}

.case-btn-primary {
  background: #0a2a66;
  color: #fff;
}

.case-btn-primary:hover {
  background: #2d7ff9;
  color: #fff;
}

.case-btn-secondary {
  border: 2px solid #0a2a66;
  color: #0a2a66;
}

.case-btn-secondary:hover {
  background: #0a2a66;
  color: #fff;
}

/* Hero */
.case-hero {
  padding: 110px 0 96px;
  background:
    radial-gradient(circle at 10% 20%, rgba(45,127,249,.12), transparent 30%),
    radial-gradient(circle at 90% 25%, rgba(45,127,249,.14), transparent 28%),
    linear-gradient(135deg, #ffffff 0%, #f7f9fc 100%);
  text-align: center;
  overflow: hidden;
}

.case-badge {
  display: inline-block;
  color: #2d7ff9;
  font-weight: 900;
  letter-spacing: .08em;
  margin-bottom: 14px;
}

.case-hero h1 {
  font-size: 58px;
  line-height: 1.25;
  color: #0a2a66;
  font-weight: 900;
  margin: 0 0 22px;
}

.case-hero p {
  color: #475569;
  font-size: 18px;
  max-width: 760px;
  margin: 0 auto;
}

/* Summary */
.case-summary {
  background: #fff;
  box-shadow: 0 14px 45px rgba(10,42,102,.06);
}

.case-summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.case-summary-item {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 16px;
  align-items: center;
  padding: 24px 24px;
  position: relative;
  border-right: none;
}

.case-summary-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 22%;
  width: 1px;
  height: 56%;
  background: rgba(45,127,249,.14);
}

.case-summary-item:last-child {
  border-right: none;
}

.case-summary-icon {
  width: 68x;
  height: 68px;
  border-radius: 50%;
  background: #eef6ff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #2d7ff9;
  font-size: 34px;
  font-weight: 900;
}

.case-summary-item h3 {
  font-size: 36px;
  color: #0a2a66;
  line-height: 1.1;
  margin: 0 0 6px;
  font-weight: 900;
}

.case-summary-item strong {
  display: block;
  color: #0a2a66;
  font-size: 16px;
  margin-bottom: 4px;
}

.case-summary-item p {
  color: #64748b;
  font-size: 13px;
  margin: 0;
}

/* Case Cards */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.case-card {
  position: relative;
  background: #fff;
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 14px 45px rgba(10,42,102,.08);
  overflow: hidden;
  transition: .25s ease;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 55px rgba(10,42,102,.12);
}

.case-label {
  position: absolute;
  top: 0;
  left: 0;
  background: linear-gradient(135deg, #0a2a66, #2d7ff9);
  color: #fff;
  padding: 10px 18px 12px;
  border-radius: 0 0 18px 0;
  font-size: 13px;
  font-weight: 900;
  line-height: 1.25;
}

.case-image {
  height: 155px;
  margin: 12px 0 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-image img {
  width: 100%;
  max-height: 155px;
  object-fit: contain;
  display: block;
}

.case-card h3 {
  color: #0a2a66;
  font-size: 24px;
  line-height: 1.4;
  margin: 0 0 6px;
  font-weight: 900;
}

.case-subtitle {
  color: #1e293b;
  font-weight: 800;
  margin-bottom: 18px;
}

.case-info {
  display: grid;
  gap: 10px;
  margin: 22px 0;
}

.case-info-row {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 12px;
  font-size: 14px;
}

.case-info-row span {
  color: #0a2a66;
  font-weight: 900;
}

.case-info-row p {
  color: #475569;
  margin: 0;
}

.case-card .case-btn {
  width: 100%;
  margin-top: 8px;
}

/* Philosophy */
.case-philosophy {
  background: #fff;
  border-radius: 28px;
  box-shadow: 0 14px 45px rgba(10,42,102,.08);
  display: grid;
  grid-template-columns: 28% 72%;
  overflow: hidden;
}

.case-philosophy-head {
  background: linear-gradient(135deg, #eef6ff, #ffffff);
  padding: 48px 38px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-philosophy-head h2 {
  color: #0a2a66;
  font-size: 30px;
  line-height: 1.45;
  font-weight: 900;
  margin: 0 0 16px;
}

.case-philosophy-head p {
  color: #475569;
  margin: 0;
}

.case-philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.case-philosophy-item {
  padding: 46px 34px;
  border-left: 1px solid rgba(45,127,249,.1);
}

.case-philosophy-icon {
  width: 74px;
  height: 74px;
  border-radius: 50%;
  background: #eef6ff;
  color: #2d7ff9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 34px;
  margin-bottom: 20px;
}

.case-philosophy-item h3 {
  color: #0a2a66;
  font-size: 22px;
  margin: 0 0 12px;
  font-weight: 900;
}

.case-philosophy-item p {
  color: #64748b;
  font-size: 15px;
  margin: 0;
}

/* CTA */
.case-cta {
  background: linear-gradient(135deg, #2d7ff9, #0a2a66);
  color: #fff;
  border-radius: 30px;
  padding: 52px 58px;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 20px;
  box-shadow: 0 20px 60px rgba(10,42,102,.15);
}

.case-cta h2 {
  color: #fff;
  font-size: 34px;
  line-height: 1.4;
  margin: 0 0 10px;
  font-weight: 900;
}

.case-cta p {
  color: rgba(255,255,255,.84);
  margin: 0;
}

.case-btn-white {
  background: #fff;
  color: #0a2a66;
}

.case-btn-white:hover {
  background: #f7f9fc;
  color: #0a2a66;
}

.case-btn-outline-white {
  border: 2px solid rgba(255,255,255,.75);
  color: #fff;
}

.case-btn-outline-white:hover {
  background: #fff;
  color: #0a2a66;
}

.case-cta .case-btn-white {
  background: #fff;
  color: #0a2a66;
  border: 2px solid #fff;
}

.case-cta .case-btn-outline-white {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,.75);
}

.case-cta .case-btn-outline-white:hover {
  background: rgba(255,255,255,.12);
  color: #fff;
}

/* Responsive */
@media (max-width: 1024px) {
  .case-summary-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-summary-item {
    border-right: none;
    border-bottom: 1px solid rgba(45,127,249,.14);
  }

  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-philosophy {
    grid-template-columns: 1fr;
  }

  .case-philosophy-grid {
    grid-template-columns: 1fr;
  }

  .case-philosophy-item {
    border-left: none;
    border-top: 1px solid rgba(45,127,249,.1);
  }

  .case-cta {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  .case-section {
    padding: 56px 0;
  }

  .case-hero {
    padding: 78px 0 72px;
  }

  .case-hero h1 {
    font-size: 38px;
  }

  .case-title {
    font-size: 30px;
  }

  .case-summary-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .case-summary-item {
    grid-template-columns: 64px 1fr;
    padding: 28px 22px;
  }

  .case-summary-item::after {
    display: none;
  }

  .case-summary-icon {
    width: 64px;
    height: 64px;
    font-size: 28px;
  }

  .case-card {
    padding: 28px 22px;
  }

  .case-cta {
    padding: 36px 28px;
  }

  .case-cta h2 {
    font-size: 28px;
  }
}