.home-masthead,
.subject-masthead {
  position: relative;
}

.home-masthead::after,
.subject-masthead::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.home-masthead .container,
.subject-masthead .container {
  z-index: 1;
}

.home-section-card,
.subject-panel {
  border-radius: var(--blog-panel-radius, 1.25rem);
  border: 1px solid rgba(14, 32, 54, 0.07);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(255, 255, 255, 0.99)),
    radial-gradient(circle at top right, rgba(0, 133, 161, 0.05), transparent var(--blog-panel-radial-stop, 48%));
  box-shadow: 0 18px 40px rgba(12, 28, 46, 0.08);
  padding: var(--blog-panel-padding, 1.25rem);
}

.home-section-head,
.subject-panel-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: var(--blog-panel-head-margin-bottom, 1.2rem);
  padding-bottom: var(--blog-panel-head-padding-bottom, 1rem);
  border-bottom: 1px solid rgba(17, 24, 39, 0.08);
}

.home-section-label,
.subject-panel-label {
  margin: 0 0 0.2rem;
  color: #0085A1;
  font-family: "Open Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.home-section-title,
.subject-panel-title {
  margin: 0;
  color: var(--blog-panel-title-color, inherit);
  font-family: "Open Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: var(--blog-panel-title-size, 1.55rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.home-text-link,
.subject-panel-link {
  color: #0f3d4e;
  font-family: "Open Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
}

.home-text-link:hover,
.home-text-link:focus,
.subject-panel-link:hover,
.subject-panel-link:focus {
  color: #0085A1;
}

.home-entry-card,
.subject-article-card {
  border-radius: 0.95rem;
  border: 1px solid rgba(15, 61, 78, 0.08);
  background: #fff;
  padding: 0.95rem 1rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.home-entry-card:hover,
.home-entry-card:focus-within,
.subject-article-card:hover,
.subject-article-card:focus-within {
  transform: translateY(-2px);
  border-color: rgba(0, 133, 161, 0.22);
  box-shadow: 0 10px 20px rgba(11, 35, 54, 0.08);
}

.home-quick-links a,
.subject-side-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(0, 133, 161, 0.08);
  background: linear-gradient(180deg, #fff, #fbfdfe);
  color: #173647;
  padding: var(--blog-side-link-padding, 0.6rem 0.75rem);
  font-family: "Open Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.home-quick-links a::after,
.subject-side-links a::after {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-top: 2px solid #0085A1;
  border-right: 2px solid #0085A1;
  opacity: 0.8;
  transform: translateY(-1px) rotate(45deg);
  transition: transform 0.18s ease, opacity 0.18s ease;
  flex-shrink: 0;
}

.home-quick-links a:hover,
.home-quick-links a:focus,
.subject-side-links a:hover,
.subject-side-links a:focus {
  color: #173647;
  border-color: rgba(0, 133, 161, 0.22);
  box-shadow: 0 8px 16px rgba(0, 133, 161, 0.08);
  transform: translateY(-1px);
}

.home-quick-links a:hover::after,
.home-quick-links a:focus::after,
.subject-side-links a:hover::after,
.subject-side-links a:focus::after {
  opacity: 1;
  transform: translateX(2px) translateY(-1px) rotate(45deg);
}

.home-empty-state,
.subject-empty-state {
  border-radius: 1rem;
  border: 1px dashed rgba(15, 61, 78, 0.2);
  background: linear-gradient(180deg, rgba(0, 133, 161, 0.03), rgba(255, 255, 255, 0.9));
  padding: var(--blog-empty-state-padding, 1.2rem);
  text-align: center;
}

@media (max-width: 991.98px) {
  .home-index-shell,
  .subject-shell {
    margin-top: -3rem;
    margin-bottom: 1.5rem;
  }
}

@media (max-width: 575.98px) {
  .home-section-card,
  .subject-panel {
    border-radius: 1rem;
    padding: 0.95rem;
  }

  .home-section-head,
  .subject-panel-head {
    align-items: start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .home-entry-card,
  .home-quick-links a,
  .subject-card,
  .subject-article-card,
  .subject-side-links a {
    transition: none;
  }
}