.java-interview-catalog {
  display: grid;
  gap: 1rem;
  margin: 1.5rem 0;
}

.java-interview-catalog .java-interview-stats,
.java-interview-catalog .java-interview-empty {
  margin: 0;
  color: var(--anzhiyu-secondtext, #858585);
}

.java-interview-catalog .java-interview-topic {
  overflow: hidden;
  border: 1px solid var(--anzhiyu-card-border, #e3e8f7);
  border-radius: 14px;
  background: var(--anzhiyu-card-bg, #fff);
}

.java-interview-catalog .java-interview-topic-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 44px;
  padding: 0.9rem 1rem;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  list-style: none;
}

.java-interview-catalog .java-interview-topic-summary::-webkit-details-marker {
  display: none;
}

.java-interview-catalog .java-interview-topic-summary::after {
  content: "⌄";
  transition: transform 0.2s ease;
}

.java-interview-catalog .java-interview-topic[open] > .java-interview-topic-summary::after {
  transform: rotate(180deg);
}

.java-interview-catalog .java-interview-topic-description {
  margin: 0;
  padding: 0 1rem 0.75rem;
  color: var(--anzhiyu-secondtext, #858585);
}

.java-interview-catalog .java-interview-question-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--anzhiyu-card-border, #e3e8f7);
}

.java-interview-catalog .java-interview-question-list > li + li {
  border-top: 1px solid var(--anzhiyu-card-border, #e3e8f7);
}

.java-interview-catalog .java-interview-question-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  min-height: 44px;
  padding: 0.75rem 1rem;
  color: var(--anzhiyu-fontcolor, #363636);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: background 0.2s ease, color 0.2s ease;
}

.java-interview-catalog .java-interview-question-link:hover,
.java-interview-catalog .java-interview-question-link:focus-visible {
  color: var(--anzhiyu-white, #fff);
  background: var(--anzhiyu-main, #425aef);
  outline: none;
}

.java-interview-catalog .java-interview-question-order {
  flex: 0 0 2.25rem;
  color: var(--anzhiyu-secondtext, #858585);
  font-variant-numeric: tabular-nums;
}

.java-interview-catalog .java-interview-question-link:hover .java-interview-question-order,
.java-interview-catalog .java-interview-question-link:focus-visible .java-interview-question-order {
  color: inherit;
}

.java-interview-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 1rem;
  color: var(--anzhiyu-secondtext, #858585);
  overflow-wrap: anywhere;
}

.java-interview-breadcrumb a {
  color: var(--anzhiyu-main, #425aef);
}

.java-interview-nav {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 0.75rem;
  margin-top: 2rem;
}

.java-interview-nav .java-interview-nav-link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--anzhiyu-card-border, #e3e8f7);
  border-radius: 10px;
  overflow-wrap: anywhere;
}

.java-interview-nav .java-interview-nav-link.catalog {
  justify-content: center;
}

.java-interview-nav .java-interview-nav-link.next {
  justify-content: flex-end;
  text-align: right;
}

.java-interview-nav .java-interview-nav-placeholder {
  min-width: 0;
}

[data-theme='dark'] .java-interview-catalog .java-interview-topic,
[data-theme='dark'] .java-interview-nav .java-interview-nav-link {
  border-color: rgba(255, 255, 255, 0.16);
}

@media (max-width: 768px) {
  .java-interview-catalog .java-interview-question-link {
    align-items: flex-start;
    padding: 0.8rem 0.75rem;
  }

  .java-interview-nav {
    grid-template-columns: 1fr;
  }

  .java-interview-nav .java-interview-nav-link,
  .java-interview-nav .java-interview-nav-link.next {
    justify-content: flex-start;
    text-align: left;
  }

  .java-interview-nav .java-interview-nav-placeholder {
    display: none;
  }
}