.question-detail-page .qd-breadcrumb {
  min-height: 30px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--text-light);
  font-size: 12px;
}

.question-detail-page .qd-breadcrumb a:hover { color: var(--primary); }
.question-detail-page .qd-breadcrumb-sep { color: var(--border); }

.question-detail-page .qd-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 286px;
  gap: 16px;
  align-items: start;
}

.question-detail-page .qd-left {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.question-detail-page .qd-main,
.question-detail-page .qd-side-box,
.question-detail-page .qd-related,
.question-detail-page .qd-page-empty {
  background: var(--white);
  border-radius: 6px;
}

.question-detail-page .qd-main { padding: 22px 24px 24px; }

.question-detail-page .qd-title {
  margin: 0 0 6px;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
}

.question-detail-page .qd-meta {
  min-height: 26px;
  padding-bottom: 13px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--text-light);
  font-size: 12px;
}

.question-detail-page .qd-meta-left {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.question-detail-page .qd-meta-left span + span::before {
  content: "·";
  margin: 0 8px;
  color: var(--border);
}

.question-detail-page .qd-question {
  color: var(--text-main);
  font-size: 15px;
  line-height: 2;
}

.question-detail-page .qd-question > :first-child { margin-top: 0; }
.question-detail-page .qd-question > :last-child { margin-bottom: 0; }

.question-detail-page .qd-question img,
.question-detail-page .qd-solution-content img {
  display: block;
  max-width: min(100%, 720px);
  max-height: 600px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.question-detail-page .qd-actions {
  margin-top: 18px;
  padding-top: 9px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.question-detail-page .qd-stat {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  color: var(--text-light);
  font-size: 12px;
}

.question-detail-page .qd-stat > span + span::before {
  content: "·";
  margin: 0 8px;
  color: var(--border);
}

.question-detail-page .qd-action-group {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.question-detail-page .qd-text-action {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--primary);
  font-size: 12px;
  line-height: 28px;
}

.question-detail-page .qd-text-action:hover,
.question-detail-page .qd-text-action.is-active { color: var(--primary-dark); }

.question-detail-page .qd-useful,
.question-detail-page .qd-basket {
  height: 28px;
  border-radius: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 12px;
}

.question-detail-page .qd-useful {
  padding: 0 9px;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text-sub);
}

.question-detail-page .qd-useful:hover,
.question-detail-page .qd-useful.is-active {
  color: var(--primary);
  border-color: var(--primary-line);
  background: var(--primary-soft);
}

.question-detail-page .qd-basket {
  padding: 0 11px;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: var(--white);
}

.question-detail-page .qd-basket:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.question-detail-page .qd-basket.is-added {
  color: var(--green);
  border-color: #bbf7d0;
  background: #f0fdf4;
}

.question-detail-page .qd-solution {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}

.question-detail-page .qd-section-title {
  margin: 0 0 13px;
  color: var(--text-main);
  font-size: 15px;
  font-weight: 500;
}

.question-detail-page .qd-answer-row,
.question-detail-page .qd-analysis-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.85;
}

.question-detail-page .qd-analysis-row { margin-top: 14px; }
.question-detail-page .qd-solution-label { color: var(--text-light); }
.question-detail-page .qd-solution-content { min-width: 0; color: var(--text-sub); }
.question-detail-page .qd-answer-value { color: var(--text-main); }
.question-detail-page .qd-solution-content > :first-child { margin-top: 0; }
.question-detail-page .qd-solution-content > :last-child { margin-bottom: 0; }

.question-detail-page .qd-solution-feedback {
  margin-top: 18px;
  display: flex;
  justify-content: flex-end;
}

.question-detail-page .qd-sidebar {
  position: sticky;
  top: 72px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.question-detail-page .qd-side-box { padding: 14px 15px; }

.question-detail-page .qd-side-title {
  margin: 0 0 10px;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
}

.question-detail-page .qd-author-main {
  display: flex;
  align-items: center;
  gap: 10px;
}

.question-detail-page .qd-author-avatar {
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 15px;
  font-weight: 500;
}

.question-detail-page .qd-author-avatar img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.question-detail-page .qd-author-info { min-width: 0; }

.question-detail-page .qd-author-name {
  display: inline-block;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-main);
  font-size: 14px;
}

.question-detail-page .qd-author-name:hover { color: var(--primary); }

.question-detail-page .qd-author-desc {
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-light);
  font-size: 12px;
}

.question-detail-page .qd-author-stat {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--text-light);
  font-size: 12px;
}

.question-detail-page .qd-author-stat a:hover { color: var(--primary); }
.question-detail-page .qd-info-list { margin: 0; padding: 0; list-style: none; }

.question-detail-page .qd-info-item {
  min-height: 32px;
  padding: 5px 0;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 8px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 12px;
}

.question-detail-page .qd-info-item:last-child { border-bottom: 0; }
.question-detail-page .qd-info-label { color: var(--text-light); }
.question-detail-page .qd-info-value { min-width: 0; color: var(--text-sub); }
.question-detail-page .qd-paper-list { margin: 0; padding: 0; list-style: none; }
.question-detail-page .qd-paper-item { padding: 8px 0; border-bottom: 1px solid var(--border-soft); }
.question-detail-page .qd-paper-item:first-child { padding-top: 2px; }
.question-detail-page .qd-paper-item:last-child { padding-bottom: 2px; border-bottom: 0; }

.question-detail-page .qd-paper-title {
  display: block;
  color: var(--text-sub);
  font-size: 12px;
  line-height: 1.65;
}

.question-detail-page .qd-paper-title:hover { color: var(--primary); }
.question-detail-page .qd-paper-time { margin-top: 2px; color: var(--text-light); font-size: 12px; }
.question-detail-page .qd-empty { color: var(--text-light); font-size: 12px; }

.question-detail-page .qd-related { padding: 16px 20px 4px; }

.question-detail-page .qd-related-head {
  padding-bottom: 11px;
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.question-detail-page .qd-related-title {
  margin: 0;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
}

.question-detail-page .qd-related-more { color: var(--text-light); font-size: 12px; }
.question-detail-page .qd-related-more:hover { color: var(--primary); }

.question-detail-page .qd-related-item {
  padding: 16px 0;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  border-bottom: 1px solid var(--border-soft);
}

.question-detail-page .qd-related-item:last-child { border-bottom: 0; }
.question-detail-page .qd-related-no { color: var(--text-sub); font-size: 13px; }

.question-detail-page .qd-related-link {
  display: block;
  color: var(--text-main);
  font-size: 13px;
  line-height: 1.85;
}

.question-detail-page .qd-related-link:hover { color: var(--primary); }
.question-detail-page .qd-related-meta { margin-top: 5px; color: var(--text-light); font-size: 12px; }
.question-detail-page .qd-related-empty { padding: 28px 0; color: var(--text-light); font-size: 13px; text-align: center; }

.question-detail-page .qd-page-empty {
  padding: 50px 24px;
  color: var(--text-sub);
  text-align: center;
}

.question-detail-page .qd-page-empty strong { display: block; margin-bottom: 16px; font-weight: 500; }
.question-detail-page .qd-page-empty a { color: var(--primary); }

@media (max-width: 900px) {
  .question-detail-page .qd-layout { grid-template-columns: minmax(0, 1fr) 250px; }
}

@media (max-width: 760px) {
  .question-detail-page .qd-layout { display: block; }
  .question-detail-page .qd-sidebar { position: static; margin-top: 12px; }
  .question-detail-page .qd-main { padding: 18px 16px 20px; }
  .question-detail-page .qd-meta,
  .question-detail-page .qd-actions { align-items: flex-start; flex-direction: column; }
  .question-detail-page .qd-action-group { flex-wrap: wrap; gap: 10px 14px; }
}

@media (max-width: 520px) {
  .question-detail-page .qd-question { font-size: 14px; }
  .question-detail-page .qd-answer-row,
  .question-detail-page .qd-analysis-row { grid-template-columns: 1fr; gap: 3px; }
}