.source-hero {
  background-size: cover;
  background-position: center;
}

.source-gallery {
  display: grid;
  grid-template-columns: 1.15fr .85fr .85fr;
  gap: 18px;
}

.source-gallery img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border: 1px solid #e2e8f0;
  border-radius: 22px;
  box-shadow: 0 18px 55px rgba(15, 23, 42, .08);
}

.source-gallery img:first-child {
  height: 538px;
  grid-row: span 2;
}

.source-grid,
.source-faq {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.source-faq {
  grid-template-columns: repeat(2, 1fr);
}

.source-card {
  padding: 24px;
  border: 1px solid #e2e8f0;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 18px 55px rgba(15, 23, 42, .07);
}

.source-card i {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border-radius: 14px;
  background: #eef2ff;
  color: #2563eb;
}

.source-card h3 {
  margin: 0 0 10px;
  color: #0f172a;
  font-weight: 900;
}

.source-card p {
  margin: 0;
  color: #64748b;
  line-height: 1.7;
}

@media (max-width: 992px) {
  .source-gallery,
  .source-faq {
    grid-template-columns: 1fr;
  }

  .source-gallery img,
  .source-gallery img:first-child {
    height: 260px;
    grid-row: auto;
  }

  .source-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 620px) {
  .source-grid {
    grid-template-columns: 1fr;
  }
}