.ref-card .domain {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.page-hero {
  background: linear-gradient(rgba(20,20,24,0.9), rgba(20,20,24,0.88)), url("/img/resources-hero.png") center/cover no-repeat;
}

.section .inner {
  max-width: 860px;
  margin: 0 auto;
}
.section h2 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  margin-bottom: 1rem;
  text-align: center;
}
.section .lede {
  text-align: center;
  color: var(--muted);
  max-width: 720px;
  margin: 0 auto 2.4rem;
}

.ref-card {
  position: relative;
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 1.6rem 1.8rem;
  margin-bottom: 1.2rem;
  transition: transform 0.2s, box-shadow 0.2s;
}
.ref-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient); /* decorative */
}
.ref-card:hover {
  transform: translateX(4px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.08);
}
.ref-card .domain {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}
.ref-card h3 {
  margin-bottom: 0.4rem;
}
.ref-card h3 a {
  color: var(--ink);
  text-decoration: none;
}
.ref-card h3 a:hover {
  color: var(--accent-1);
  text-decoration: underline;
}
.ref-card p {
  font-size: 0.92rem;
  color: var(--muted);
}

@media (max-width: 760px) {
  header .bar {
    flex-direction: column;
    gap: 0.8rem;
  }
}