body {
  background: #fefefe;
  font-family: system-ui, sans-serif;
  color: #222;
}
body.dark {
  background: #121212;
  color: #eee;
}
.case-wrapper {
  max-width: 860px;
  margin: 40px auto;
  padding: 0 20px;
}
.case-title {
  font-size: 1.8rem;
  font-weight: bold;
  margin-bottom: 20px;
}
.case-meta {
  font-size: 0.95em;
  color: #666;
  margin-bottom: 20px;
}
body.dark .case-meta {
  color: #aaa;
}
.case-body {
  font-size: 1.05em;
  line-height: 1.8;
}
.case-body h2 {
  font-size: 1.4em;
  margin-top: 1.6em;
}
.case-body img {
  max-width: 100%;
  border-radius: 12px;
  margin: 1em 0;
}
.case-gallery {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 20px;
}
.case-tag {
  display: inline-block;
  background: #d9f0ff;
  color: #0a65cc;
  border-radius: 6px;
  padding: 4px 12px;
  margin-right: 6px;
  font-size: 0.85em;
}
body.dark .case-tag {
  background: #2c3b4c;
  color: #b0d5ff;
}