:root {
  --primary-color: #00489e;
  --accent-alert: #e63946;
  --accent-success: #2a9d8f;
  --orange: #f5780b;
  --bg-light: #f8f9fa;
  --text-dark: #333333;
  --border-color: #e0e0e0;
}

.sec-ctnavi-case-banner {
  background: linear-gradient(135deg, #002855 0%, var(--primary-color) 100%);
  padding: 60px 20px;
  text-align: center;
  color: #ffffff;
}

.sec-ctnavi-case-banner .banner-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.sec-ctnavi-case-banner .case-label {
  display: inline-block;
  background-color: #ffffff;
  color: var(--primary-color);
  font-weight: bold;
  padding: 4px 15px;
  border-radius: 4px;
  font-size: 14px;
  margin-bottom: 15px;
  letter-spacing: 1px;
}

.sec-ctnavi-case-banner h1 {
  font-size: 32px;
  line-height: 1.4;
  font-weight: bold;
  margin-bottom: 15px;
}

.sec-ctnavi-case-banner .sub-ttl {
  font-size: 18px;
  opacity: 0.9;
}

.case-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 50px 20px;
  font-family: "Noto Sans Japanese", sans-serif;
  color: var(--text-dark);
  line-height: 1.8;
}

.case-meta-box {
  display: flex;
  align-items: center;
  gap: 34px;
  background-color: #ffffff;
  border-radius: 14px;
  padding: 26px;
  margin-bottom: 50px;
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.05);
}

.case-meta-img {
  flex: 0 0 400px;
  width: 400px;
  max-width: 100%;
  aspect-ratio: 4 / 3;
  background-color: #ddd;
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
}

.case-meta-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.case-meta-info {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0;
}

.case-company-name {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 20px;
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: 10px;
}

.case-meta-table {
  width: 100%;
}

.case-meta-table th,
.case-meta-table td {
  padding: 10px 0;
  border-bottom: 1px dashed var(--border-color);
  text-align: left;
  vertical-align: top;
}

.case-meta-table th {
  width: 30%;
  font-weight: bold;
  color: #666;
}

.case-summary-title {
  text-align: center;
  font-size: 26px;
  font-weight: bold;
  margin-bottom: 45px;
  position: relative;
}

.case-summary-title::after {
  content: "";
  display: block;
  width: 50px;
  height: 3px;
  background-color: var(--primary-color);
  margin: 10px auto 0;
}

.case-process-container {
  position: relative;
  margin-bottom: 60px;
  padding-left: 30px;
}

.case-process-container::before {
  content: "";
  position: absolute;
  top: 5px;
  bottom: 5px;
  left: 75px;
  width: 4px;
  background-color: var(--border-color);
  z-index: 1;
}

.case-process-row {
  display: flex;
  margin-bottom: 35px;
  position: relative;
  z-index: 2;
}

.case-process-row:last-child {
  margin-bottom: 0;
}

.case-process-badge {
  width: 94px;
  height: 44px;
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: bold;
  font-size: 15px;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.case-process-row.challenge .case-process-badge {
  background-color: var(--accent-alert);
}

.case-process-row.solution .case-process-badge {
  background-color: var(--primary-color);
}

.case-process-row.effect .case-process-badge {
  background-color: var(--accent-success);
}

.case-process-content {
  flex-grow: 1;
  margin-left: 25px;
  background-color: #ffffff;
  padding: 25px 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  border-left: 5px solid var(--primary-color);
}

.case-process-row.challenge .case-process-content {
  border-left-color: var(--accent-alert);
}

.case-process-row.solution .case-process-content {
  border-left-color: var(--primary-color);
}

.case-process-row.effect .case-process-content {
  border-left-color: var(--accent-success);
}

.case-process-content h4 {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 15px;
}

.case-process-row.challenge .case-process-content h4 {
  color: var(--accent-alert);
}

.case-process-row.solution .case-process-content h4 {
  color: var(--primary-color);
}

.case-process-row.effect .case-process-content h4 {
  color: var(--accent-success);
}

.case-process-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.case-process-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  font-size: 16px;
}

.case-process-list li:last-child {
  margin-bottom: 0;
}

.case-process-list li::before {
  content: "●";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 12px;
}

.case-process-row.challenge .case-process-list li::before {
  color: var(--accent-alert);
}

.case-process-row.solution .case-process-list li::before {
  color: var(--primary-color);
}

.case-process-row.effect .case-process-list li::before {
  color: var(--accent-success);
}

.case-visual-section {
  margin: 40px 0 50px;
  background-color: var(--bg-light);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  display: flex;
  align-items: center;
}

.case-visual-img {
  flex: 1.2;
  background-color: #e2e2e2;
}

.case-visual-img img {
  width: 100%;
  height: auto;
  display: block;
}

.case-visual-text {
  flex: 1;
  padding: 40px;
}

.case-visual-text h4 {
  font-size: 22px;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 15px;
  line-height: 1.4;
}

.case-visual-text p {
  font-size: 15px;
  line-height: 1.7;
  color: #555;
  margin: 0;
}

.interview-section {
  margin-bottom: 50px;
}

.interview-block {
  margin-bottom: 40px;
  background: #ffffff;
}

.interview-q {
  font-size: 20px;
  font-weight: bold;
  color: #ffffff;
  background-color: var(--primary-color);
  padding: 15px 25px;
  border-radius: 6px;
  margin-bottom: 20px;
  position: relative;
}

.interview-q::before {
  content: "Q";
  font-size: 26px;
  margin-right: 12px;
  font-style: italic;
  opacity: 0.8;
  vertical-align: middle;
}

.interview-a {
  padding: 0 15px 0 25px;
  font-size: 16px;
}

.interview-a p {
  margin-bottom: 15px;
}

.interview-a ul {
  background-color: var(--bg-light);
  padding: 25px 25px 25px 40px;
  border-left: 4px solid var(--primary-color);
  margin: 20px 0;
}

.interview-a li {
  margin-bottom: 12px;
  font-weight: bold;
  font-size: 16px;
}

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

.container {
  padding-top: 50px;
}

.case-cta-section {
  margin: 60px 0 20px;
  padding: 50px 30px;
  background: linear-gradient(135deg, #f0f4f8 0%, #e6eef5 100%);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: inset 0 1px 3px rgba(255, 255, 255, 0.8);
}

.cta-inner {
  max-width: 900px;
  margin: 0 auto;
}

.cta-title {
  text-align: center;
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.cta-lead {
  text-align: center;
  font-size: 15px;
  line-height: 1.7;
  color: #4a5568;
  margin-bottom: 40px;
}

.cta-points {
  max-width: 700px;
  margin: 0 auto 30px;
  padding: 25px 30px;
  background: #ffffff;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.cta-points p {
  margin: 0 0 10px;
  font-weight: bold;
  color: var(--text-dark);
}

.cta-points p:last-child {
  margin-bottom: 0;
}

.cta-buttons-container {
  display: table;
  width: 100%;
  table-layout: fixed;
  border-spacing: 20px 0;
  margin: 0 -20px;
}

.cta-box {
  display: table-cell;
  background-color: #ffffff;
  border-radius: 8px;
  padding: 35px 25px 30px;
  vertical-align: top;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
  position: relative;
  text-align: center;
}

.box-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--primary-color);
  color: #ffffff;
  font-size: 12px;
  font-weight: bold;
  padding: 4px 18px;
  border-radius: 20px;
  white-space: nowrap;
  letter-spacing: 0.5px;
}

.box-badge.success {
  background-color: var(--orange);
}

.cta-box h4 {
  font-size: 17px;
  font-weight: bold;
  color: var(--text-dark);
  line-height: 1.5;
  margin-bottom: 15px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.box-desc {
  font-size: 13px;
  line-height: 1.6;
  color: #666666;
  margin-bottom: 25px;
  text-align: left;
  height: 64px;
}

.cta-btn,
.cta-btn2 {
  display: block;
  width: 100%;
  color: #ffffff !important;
  font-weight: bold;
  font-size: 15px;
  padding: 14px;
  border-radius: 6px;
  text-decoration: none;
  text-align: center;
  box-shadow: 0 4px 10px rgba(42, 157, 143, 0.3);
  border: none;
}

.cta-btn {
  background: linear-gradient(to bottom, #f5780b, #f5780b);
}

.cta-btn2 {
  background-color: var(--primary-color);
}

.cta-btn:hover,
.cta-btn2:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 6px 15px rgba(42, 157, 143, 0.4);
}

.cta-btn .arrow,
.cta-btn2 .arrow {
  font-size: 11px;
  margin-left: 8px;
}

#case-contact-form-wrapper {
  margin-top: 40px;
  padding-top: 40px;
  border-top: 2px solid var(--border-color);
}

@media (max-width: 768px) {
  .sec-ctnavi-case-banner {
    padding: 40px 15px;
  }

  .sec-ctnavi-case-banner h1 {
    font-size: 22px;
  }

  .sec-ctnavi-case-banner .sub-ttl {
    font-size: 14px;
  }

  .case-meta-box {
    flex-direction: column;
    align-items: stretch;
    gap: 20px;
    padding: 18px;
  }

  .case-meta-img {
    width: 100%;
    flex: none;
    aspect-ratio: 16 / 9;
    min-height: 200px;
  }

  .case-company-name {
    font-size: 20px;
  }

  .case-process-container {
    padding-left: 0;
  }

  .case-process-container::before {
    left: 25px;
  }

  .case-process-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }

  .case-process-content {
    margin-left: 0;
    width: 100%;
    padding: 20px;
  }

  .case-visual-section {
    flex-direction: column;
  }

  .case-visual-text {
    padding: 25px;
  }

  .case-visual-text h4 {
    font-size: 18px;
  }

  .interview-q {
    font-size: 16px;
    padding: 12px 15px;
  }

  .interview-q::before {
    font-size: 20px;
  }

  .interview-a {
    padding: 0 5px;
  }

  .interview-a ul {
    padding: 20px 20px 20px 30px;
  }

  .case-cta-section {
    padding: 35px 20px 15px;
    margin: 40px 0 10px;
  }

  .cta-title {
    font-size: 18px;
  }

  .cta-lead {
    font-size: 13px;
    margin-bottom: 20px;
    text-align: left;
  }

  .cta-points {
    padding: 20px;
  }

  .cta-buttons-container {
    display: block;
    margin: 0;
  }

  .cta-box {
    display: block;
    width: 100%;
    margin-bottom: 35px;
    padding: 25px 20px 20px;
  }

  .cta-box h4 {
    height: auto;
    margin-bottom: 10px;
    font-size: 16px;
  }

  .box-desc {
    height: auto;
    margin-bottom: 20px;
    font-size: 13px;
  }
}