/* 案例库页面：复用总账的变量与基础样式，只补案例特有部分 */

.case-hero {
  padding: 72px 0 40px;
  max-width: 900px;
}

.case-hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(38px, 4.6vw, 58px);
  line-height: 1.14;
  letter-spacing: -.03em;
  margin: 0 0 24px;
}

.case-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  margin-top: 34px;
}
.case-stats > div {
  background: #fff;
  padding: 18px 18px 15px;
  display: grid;
  gap: 3px;
}
.case-stats strong {
  font-family: var(--serif);
  font-size: 26px;
  line-height: 1.15;
  letter-spacing: -.02em;
}
.case-stats span { font-size: 12px; color: var(--ink-3); }

.case-block { padding: 56px 0 20px; }

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 26px;
}

.case-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.case-card video {
  display: block;
  width: 100%;
  height: auto;
  max-height: 430px;
  object-fit: contain;
  background: #111;
}

.case-body {
  padding: 18px 20px 20px;
  display: grid;
  gap: 9px;
}

.case-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.case-tag {
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid #e3c2b3;
  border-radius: 999px;
  padding: 3px 9px;
  white-space: nowrap;
}

.case-result {
  font-size: 11.5px;
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
}
.case-result.good { color: var(--green); background: var(--green-soft); border: 1px solid #cfe0d5; }
.case-result.mid { color: var(--amber); background: var(--amber-soft); border: 1px solid #e8d9b5; }

.case-body h3 {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.35;
}
.case-body p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.65;
}

.case-body details {
  border-top: 1px solid var(--line);
  padding-top: 10px;
  margin-top: 2px;
}
.case-body summary {
  cursor: pointer;
  font-size: 12.5px;
  color: var(--ink-3);
  list-style: none;
}
.case-body summary::-webkit-details-marker { display: none; }
.case-body summary::before { content: "＋ "; color: var(--accent); }
.case-body details[open] summary::before { content: "－ "; }
.case-body details p {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--ink-2);
  background: var(--paper-2);
  border-radius: 8px;
  padding: 12px 14px;
  line-height: 1.7;
}

.case-block .boundary-grid { margin-top: 26px; }

@media (max-width: 900px) {
  .case-grid { grid-template-columns: 1fr; }
  .case-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .case-hero { padding-top: 44px; }
  .case-stats { grid-template-columns: 1fr 1fr; }
  .case-stats strong { font-size: 22px; }
  .case-body { padding: 15px 16px 17px; }
}