/* ── Use Cases — index + detail ───────────────────────────────────────────── */

.uc-list { padding: 8px 0 88px; }

.uc-row {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 32px;
  align-items: center;
  padding: 30px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
}

.uc-thumb {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg2);
  aspect-ratio: 760 / 420;
  transition: border-color 0.15s, transform 0.15s;
}
.uc-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.uc-row:hover .uc-thumb { border-color: var(--accent); transform: translateY(-2px); }

.uc-tag {
  font-family: var(--mono, ui-monospace, 'SFMono-Regular', Menlo, monospace);
  font-size: 12px; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 8px;
}
.uc-title { font-size: 21px; font-weight: 700; margin-bottom: 8px; transition: color 0.15s; }
.uc-row:hover .uc-title { color: var(--accent); }
.uc-excerpt { color: var(--text2); font-size: 14px; line-height: 1.65; max-width: 560px; }
.uc-more { font-size: 12.5px; color: var(--text3); margin-top: 10px; }

/* detail page */
.uc-page { max-width: 720px; }
.uc-hero {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--border); border-radius: 12px;
  margin: 4px 0 40px; background: var(--bg2);
}
.uc-page .prose { max-width: 660px; }

@media (max-width: 640px) {
  .uc-row { grid-template-columns: 1fr; gap: 16px; padding: 24px 0; }
  .uc-thumb { max-width: 420px; }
}