/* =========================================================
   Case Study Pages — scoped styles (Claude Design layout)
   ========================================================= */

.case-study-page {
  margin: 0;
  padding: 0;
  background: #fbfaf6;
  color: #2a3b4d;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

/* --- Hero --- */
.case-study-page .cs-hero {
  background: linear-gradient(150deg, #0e2740 0%, #15375a 60%, #1b4068 100%);
  padding: 88px 64px 96px;
}
.case-study-page .cs-hero-inner {
  max-width: 880px;
  margin: 0 auto;
}
.case-study-page .cs-eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 30px;
}
.case-study-page .cs-eyebrow::before {
  content: "";
  display: inline-block;
  width: 36px;
  height: 2px;
  background: #c1a15b;
}
.case-study-page .cs-eyebrow span {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3.9px;
  color: #c1a15b;
  text-transform: uppercase;
}
.case-study-page .cs-hero-label {
  font-size: 15px;
  color: #9db1c7;
  letter-spacing: 1.2px;
  margin: 0 0 18px;
}
.case-study-page .cs-hero h1 {
  font-family: "Noto Serif JP", serif;
  font-size: 42px;
  font-weight: 600;
  color: #fbfaf6;
  line-height: 1.5;
  letter-spacing: 0.84px;
  margin: 0 0 28px;
}
.case-study-page .cs-hero-lead {
  font-size: 16px;
  color: #c8d4e0;
  line-height: 1.9;
  margin: 0 0 48px;
  max-width: 680px;
}
.case-study-page .cs-hero-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 32px;
}
.case-study-page .cs-hero-meta-item {
  padding-right: 24px;
}
.case-study-page .cs-hero-meta-item + .cs-hero-meta-item {
  padding-left: 24px;
  border-left: 1px solid rgba(255,255,255,0.15);
}
.case-study-page .cs-hero-meta-label {
  font-size: 12px;
  color: #9db1c7;
  letter-spacing: 0.6px;
  margin-bottom: 8px;
}
.case-study-page .cs-hero-meta-value {
  font-size: 16px;
  color: #fbfaf6;
  font-weight: 500;
}

/* --- Main content --- */
.case-study-page .cs-main {
  max-width: 880px;
  margin: 0 auto;
  padding: 88px 64px 100px;
}

/* --- Section spacing --- */
.case-study-page .cs-section {
  margin-bottom: 84px;
}
.case-study-page .cs-section:last-child {
  margin-bottom: 0;
}

/* --- Section heading with badge --- */
.case-study-page .cs-section-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}
.case-study-page .cs-badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.2px;
}
.case-study-page .cs-badge-before {
  background: #f6e9e1;
  color: #b55530;
}
.case-study-page .cs-badge-process {
  background: #e1edf6;
  color: #2a6cb5;
}
.case-study-page .cs-badge-output {
  background: #e6f0e1;
  color: #3d8c2f;
}
.case-study-page .cs-badge-after {
  background: #f0e6f6;
  color: #7b3db5;
}
.case-study-page .cs-badge-voice {
  background: #fdf5e6;
  color: #b58a2a;
}
.case-study-page .cs-section h2 {
  font-family: "Noto Serif JP", serif;
  font-size: 26px;
  font-weight: 600;
  color: #0e2740;
  letter-spacing: 0;
  margin: 0;
  line-height: 1.4;
}

/* --- Section intro text --- */
.case-study-page .cs-section-intro {
  font-size: 16px;
  color: #2a3b4d;
  line-height: 1.9;
  margin: 0 0 28px;
}
.case-study-page .cs-section-intro strong {
  color: #0e2740;
  text-decoration: underline;
  text-decoration-color: #c1a15b;
  text-underline-offset: 4px;
}

/* --- Before cards (2-col grid) --- */
.case-study-page .cs-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.case-study-page .cs-card {
  background: #fff;
  border-radius: 8px;
  padding: 20px 22px;
  font-size: 15px;
  line-height: 1.75;
  color: #2a3b4d;
  border: 1px solid #e8e4dc;
}

/* --- Process steps (vertical timeline) --- */
.case-study-page .cs-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  counter-reset: step;
}
.case-study-page .cs-step {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid #e8e4dc;
}
.case-study-page .cs-step:last-child {
  border-bottom: none;
}
.case-study-page .cs-step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #15375a;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.case-study-page .cs-step-title {
  font-family: "Noto Serif JP", serif;
  font-size: 17px;
  font-weight: 600;
  color: #0e2740;
  margin: 0 0 8px;
}
.case-study-page .cs-step-desc {
  font-size: 15px;
  color: #4a6278;
  line-height: 1.8;
  margin: 0;
}

/* --- Output section --- */
.case-study-page .cs-output-intro {
  font-size: 16px;
  line-height: 1.9;
  color: #2a3b4d;
  margin: 0 0 20px;
}
.case-study-page .cs-output-intro strong {
  color: #0e2740;
  font-weight: 600;
}
.case-study-page .cs-output-figure {
  margin: 32px 0 0;
  padding: 0;
}
.case-study-page .cs-output-img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid #e8e4dc;
}
.case-study-page .cs-output-caption {
  font-size: 13px;
  color: #8a9aaa;
  text-align: center;
  margin-top: 12px;
}
.case-study-page .cs-output-note {
  font-size: 13px;
  color: #8a9aaa;
  text-align: center;
  margin-top: 6px;
}

/* --- After section (check list) --- */
.case-study-page .cs-check-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.case-study-page .cs-check-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid #e8e4dc;
  font-size: 15px;
  line-height: 1.7;
  color: #2a3b4d;
}
.case-study-page .cs-check-item:last-child {
  border-bottom: none;
}
.case-study-page .cs-check-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #e6f0e1;
  color: #3d8c2f;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-top: 2px;
}

/* --- Voice section (quotes) --- */
.case-study-page .cs-quotes {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.case-study-page .cs-quote-block {
  position: relative;
  margin-bottom: 0;
}
.case-study-page .cs-quote-mark {
  font-family: "Noto Serif JP", serif;
  font-size: 48px;
  color: #c1a15b;
  line-height: 1;
  margin-bottom: 8px;
}
.case-study-page .cs-quote-item {
  padding: 20px 0;
  border-bottom: 1px solid #e8e4dc;
  font-family: "Noto Serif JP", serif;
  font-size: 17px;
  font-weight: 500;
  color: #0e2740;
  line-height: 1.8;
  font-style: italic;
}
.case-study-page .cs-quote-item:last-child {
  border-bottom: none;
}
.case-study-page .cs-voice-note {
  font-size: 15px;
  color: #4a6278;
  line-height: 1.9;
  margin: 28px 0 0;
}
.case-study-page .cs-voice-note strong {
  color: #0e2740;
}

/* --- CTA footer (dark navy) --- */
.case-study-page .cs-cta {
  background: #15375a;
  padding: 52px 64px;
  text-align: center;
}
.case-study-page .cs-cta-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2.4px;
  color: #c1a15b;
  text-transform: uppercase;
  margin: 0 0 16px;
}
.case-study-page .cs-cta-text {
  font-family: "Noto Serif JP", serif;
  font-size: 22px;
  font-weight: 500;
  color: #fbfaf6;
  line-height: 1.6;
  margin: 0;
}

/* --- Anonymization note --- */
.case-study-page .cs-anon-note {
  font-size: 13px;
  color: #8a9aaa;
  text-align: center;
  padding: 24px 0;
  border-top: 1px solid #e8e4dc;
  margin-top: 48px;
}

/* --- Back link & footer (reuse site styles) --- */
.case-study-page .cs-footer-wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 64px;
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 768px) {
  .case-study-page .cs-hero {
    padding: 56px 24px 64px;
  }
  .case-study-page .cs-hero h1 {
    font-size: 28px;
  }
  .case-study-page .cs-hero-meta {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .case-study-page .cs-hero-meta-item + .cs-hero-meta-item {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid rgba(255,255,255,0.15);
    padding-top: 20px;
  }
  .case-study-page .cs-main {
    padding: 56px 24px 64px;
  }
  .case-study-page .cs-card-grid {
    grid-template-columns: 1fr;
  }
  .case-study-page .cs-section h2 {
    font-size: 22px;
  }
  .case-study-page .cs-cta {
    padding: 40px 24px;
  }
  .case-study-page .cs-cta-text {
    font-size: 18px;
  }
  .case-study-page .cs-footer-wrap {
    padding: 0 24px;
  }
}