/* expertise styles */

/* ─── Expertise / Articles ─── */
.expertise-head {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 32px; flex-wrap: wrap;
  margin-bottom: 48px;
}
.expertise-head h2 { text-align: left; }
.articles-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 22px; }
@media (max-width: 980px) {
  .articles-grid { grid-template-columns: 1fr 1fr; }
  .article-card:first-child { grid-column: span 2; }
}
@media (max-width: 640px) {
  .articles-grid { grid-template-columns: 1fr; }
  .article-card:first-child { grid-column: auto; }
}
.article-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.article-img {
  aspect-ratio: 16 / 9;
  background: var(--grad-accent);
  position: relative;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.article-card:nth-child(1) .article-img { background: linear-gradient(135deg, #5B5BFE 0%, #8B5CF6 100%); }
.article-card:nth-child(2) .article-img { background: linear-gradient(135deg, #00D68F 0%, #22D3EE 100%); }
.article-card:nth-child(3) .article-img { background: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%); }
.article-img-emoji {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 56px;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.25));
}
.article-category {
  position: absolute; top: 16px; left: 16px;
  padding: 5px 11px;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(8px);
  border-radius: 100px;
  font-size: 11px; font-weight: 700;
  color: var(--ink);
}
.article-body { padding: 24px 26px; display: flex; flex-direction: column; flex: 1; }
.article-meta {
  display: flex; align-items: center; gap: 10px;
  font-size: 11.5px; color: var(--text-mute); margin-bottom: 12px;
}
.article-meta-dot { width: 3px; height: 3px; border-radius: 50%; background: var(--text-light); }
.article-title {
  font-family: var(--font-head);
  font-size: 18px; font-weight: 700;
  color: var(--ink);
  line-height: 1.25;
  letter-spacing: -0.02em;
  text-decoration: none;
  margin-bottom: 12px;
  text-wrap: pretty;
  transition: color var(--t);
}
.article-card:first-child .article-title { font-size: 22px; }
.article-title:hover { color: var(--mint-deep); }
.article-excerpt { font-size: 13.5px; color: var(--text-mute); line-height: 1.55; margin-bottom: 18px; }
.article-footer {
  margin-top: auto;
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.article-read {
  font-size: 13px; font-weight: 700;
  color: var(--mint-deep);
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 4px;
  transition: gap var(--t);
}
.article-read:hover { gap: 10px; }
.article-tag {
  font-size: 11px;
  padding: 4px 10px;
  background: var(--mint-pale);
  color: var(--mint-deep);
  border-radius: 100px;
  font-weight: 700;
}