/**
 * 分层作业列表 / 详情：与按章节选题共用
 * `.container.wpsxep-front-wrap.wpsxep-bank-wrap.wpsxep-bank-wrap--wide-sidebar`（侧栏 280px、日/夜变量）
 * 及 `.wpsxep-bank-sidebar`、`.wpsxep-bank-sidebar-card`。
 */

.wpsxep-lh-layout {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  width: 100%;
  margin: 0;
  padding-bottom: 28px;
  box-sizing: border-box;
}

/* 侧栏宽度由 front.css 中 .wpsxep-bank-wrap--wide-sidebar .wpsxep-bank-sidebar 统一为 280px */

.wpsxep-lh-dir-sidebar-card .wpsxep-lh-dir-card-title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--tb--color, #1e293b);
}

.wpsxep-lh-dir-all {
  margin: 0 0 10px;
}

.wpsxep-lh-leaf-roots {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.wpsxep-lh-leaf-roots-row .wpsxep-tree-link {
  display: block;
}

.wpsxep-lh-dir-split {
  margin: 12px 0;
  border: 0;
  border-top: 1px solid color-mix(in srgb, var(--tb--border, #e2e8f0) 88%, transparent);
  height: 0;
}

.wpsxep-lh-book-tree {
  margin-top: 4px;
}

.wpsxep-lh-dir-tree ul {
  list-style: none;
  margin: 0.25rem 0 0 0.75rem;
  padding: 0;
}

.wpsxep-lh-dir-tree > ul {
  margin-left: 0;
}

.wpsxep-lh-main {
  flex: 1;
  min-width: 0;
}

/* 详情页主栏：与列表 .wpsxep-lh-main 相同，占满「侧栏 + gap」以外的宽度；未设时主栏易呈内容收缩宽，显得左窄右空。 */
.wpsxep-lh-detail-main {
  flex: 1 1 0%;
  min-width: 0;
}

.wpsxep-lh-toolbar.wpsxep-bank-filters {
  align-items: center;
}

.wpsxep-lh-toolbar.wpsxep-bank-filters .wpsxep-lh-search input[type="search"] {
  min-width: 200px;
  max-width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--wpsxep-input-border);
  border-radius: 8px;
  background: var(--wpsxep-input-bg);
  color: var(--wpsxep-input-text);
  font-size: 14px;
  line-height: 1.4;
  box-sizing: border-box;
}

.wpsxep-lh-toolbar.wpsxep-bank-filters .wpsxep-lh-search input[type="search"]:focus {
  outline: none;
  border-color: var(--wpsxep-accent);
  box-shadow: 0 0 0 2px var(--wpsxep-accent-ring);
}

.wpsxep-lh-count {
  color: var(--wpsxep-text-muted);
  margin: 0 0 1rem;
  font-size: 14px;
}

.wpsxep-lh-card-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.wpsxep-lh-card {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid color-mix(in srgb, var(--tb--border, #e2e8f0) 92%, transparent);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 12px;
  background: var(--wpsxep-surface-card, #fff);
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.05);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.wpsxep-lh-card:hover {
  border-color: color-mix(in srgb, var(--tb--main, var(--wpsxep-accent)) 28%, var(--tb--border, #e2e8f0));
  box-shadow: 0 6px 22px -12px color-mix(in srgb, var(--tb--main, var(--wpsxep-accent)) 22%, rgba(15, 23, 42, 0.35));
}

.wpsxep-lh-card-tag {
  flex: 0 0 auto;
  align-self: center;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 8px;
  background: var(--tb--main, var(--wpsxep-accent));
  color: #fff;
  border-radius: 6px;
  height: fit-content;
  letter-spacing: 0.02em;
}

.wpsxep-lh-card-tag--img {
  padding: 0;
  background: transparent;
  color: inherit;
  border-radius: 8px;
  line-height: 0;
}

.wpsxep-lh-card-tag--img img {
  display: block;
  height: 63px;
  width: auto;
  max-height: 72px;
  max-width: 270px;
  object-fit: contain;
  vertical-align: middle;
}

.wpsxep-lh-card-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.wpsxep-lh-card-list .wpsxep-lh-card a.wpsxep-lh-card-title {
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  font-weight: 700;
  line-height: 1.28;
  text-decoration: none;
  color: var(--wpsxep-text-main);
}

.wpsxep-lh-card-list .wpsxep-lh-card a.wpsxep-lh-card-title:hover {
  color: var(--tb--main, var(--wpsxep-accent));
}

.wpsxep-lh-card-meta {
  font-size: 13px;
  color: var(--wpsxep-text-muted);
  margin-top: 4px;
  line-height: 1.45;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
}

.wpsxep-lh-card-btn {
  align-self: center;
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.25;
}

.wpsxep-lh-pagination {
  margin-top: 8px;
}

.wpsxep-lh-pagination a {
  display: inline-block;
  margin: 4px 6px 4px 0;
  padding: 6px 11px;
  border: 1px solid var(--wpsxep-border-soft);
  border-radius: 8px;
  text-decoration: none;
  font-size: 13px;
  color: var(--wpsxep-text-subtle);
  background: var(--wpsxep-surface-card);
}

.wpsxep-lh-pagination a:hover {
  border-color: color-mix(in srgb, var(--tb--main, var(--wpsxep-accent)) 35%, var(--wpsxep-border-soft));
  color: var(--tb--main, var(--wpsxep-accent));
}

.wpsxep-lh-pagination a.is-active {
  background: var(--wpsxep-accent);
  border-color: var(--wpsxep-accent);
  color: #fff;
}

/* 详情：主栏已为 .wpsxep-bank-sidebar-card */
.wpsxep-lh-detail-layout {
  max-width: none;
  /* 固定顶栏下的锚点留白 + 题号高亮参照；子主题/自定义 CSS 可覆盖，例如：--wpsxep-lh-scrollspy-offset: 120px; */
  --wpsxep-lh-scrollspy-offset: 96px;
}

.wpsxep-lh-detail-layout .wpsxep-lh-section-title,
.wpsxep-lh-detail-layout article.wpsxep-lh-question {
  scroll-margin-top: var(--wpsxep-lh-scrollspy-offset, 96px);
}

.wpsxep-lh-detail-main.wpsxep-bank-sidebar-card {
  padding: 22px 24px 28px;
  border-radius: 14px;
  box-shadow:
    0 1px 2px rgba(15, 23, 42, 0.04),
    0 12px 40px -16px rgba(15, 23, 42, 0.08);
}

.wpsxep-lh-detail-sidebar {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.wpsxep-lh-detail-head {
  margin-bottom: 1.35rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid color-mix(in srgb, var(--tb--border, #e2e8f0) 88%, transparent);
}

.wpsxep-lh-back a {
  font-size: 14px;
  color: var(--tb--main, var(--wpsxep-accent));
  text-decoration: none;
  font-weight: 600;
}

.wpsxep-lh-back a:hover {
  text-decoration: underline;
}

.wpsxep-lh-detail-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-top: 8px;
}

.wpsxep-lh-detail-title-row .wpsxep-lh-card-tag--img {
  align-self: center;
}

.wpsxep-lh-detail-title-row .wpsxep-lh-detail-title {
  margin: 0;
  flex: 1 1 12rem;
  min-width: 0;
}

.wpsxep-lh-detail-title {
  margin: 8px 0 0;
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--wpsxep-text-main);
  line-height: 1.25;
}

.wpsxep-lh-detail-meta {
  color: var(--wpsxep-text-muted);
  font-size: 13px;
  display: flex;
  gap: 1.1rem;
  flex-wrap: wrap;
  margin: 12px 0 0;
  line-height: 1.5;
}

.wpsxep-lh-section-title {
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin: 1.65rem 0 1rem;
  padding: 12px 16px;
  border: 1px solid color-mix(in srgb, var(--tb--border, #e2e8f0) 75%, transparent);
  border-left: 4px solid var(--tb--main, var(--wpsxep-accent));
  background: linear-gradient(
    105deg,
    color-mix(in srgb, var(--tb--main, var(--wpsxep-accent)) 9%, var(--wpsxep-surface-soft, #f8fafc)) 0%,
    var(--wpsxep-surface-soft, #f8fafc) 48%,
    var(--wpsxep-surface-card, #fff) 100%
  );
  color: var(--wpsxep-text-main);
  border-radius: 10px;
  line-height: 1.35;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.wpsxep-lh-detail-main > .wpsxep-lh-section-title:first-of-type {
  margin-top: 0.35rem;
}

.wpsxep-lh-question {
  margin-bottom: 1.5rem;
  padding: 1.1rem 1.2rem 1.15rem;
  border: 1px solid color-mix(in srgb, var(--tb--border, #e2e8f0) 72%, transparent);
  border-radius: 12px;
  background: var(--wpsxep-surface-card, #fff);
  box-shadow:
    0 1px 2px rgba(15, 23, 42, 0.04),
    0 8px 28px -14px rgba(15, 23, 42, 0.07);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.wpsxep-lh-detail-layout .wpsxep-lh-question:hover {
  border-color: color-mix(in srgb, var(--tb--main, var(--wpsxep-accent)) 22%, var(--tb--border, #e2e8f0));
  box-shadow:
    0 1px 3px rgba(15, 23, 42, 0.05),
    0 14px 36px -14px color-mix(in srgb, var(--tb--main, var(--wpsxep-accent)) 12%, rgba(15, 23, 42, 0.12));
}

.wpsxep-lh-qstem {
  line-height: 1.55;
  font-size: calc(0.97rem * 2);
  color: var(--wpsxep-text-main);
}

.wpsxep-lh-detail-layout .wpsxep-lh-qstem .wpsxep-bank-options {
  font-size: 1em;
}

.wpsxep-lh-qstem .wpsxep-stem,
.wpsxep-lh-qstem .wpsxep-bank-options {
  line-height: inherit;
}

.wpsxep-lh-qstem .wpsxep-lh-qnum {
  font-weight: 800;
  margin-right: 0.35rem;
  color: var(--wpsxep-text-main);
}

.wpsxep-lh-qdetails {
  margin-top: 12px;
}

.wpsxep-lh-qsummary {
  cursor: pointer;
  list-style: none;
  color: var(--tb--main, var(--wpsxep-accent));
  font-weight: 600;
  font-size: 14px;
  padding: 6px 2px;
  border-radius: 6px;
  display: inline-block;
  user-select: none;
}

.wpsxep-lh-qsummary:focus {
  outline: none;
}

.wpsxep-lh-qsummary:focus-visible {
  outline: 2px solid var(--wpsxep-accent-ring, rgba(99, 102, 241, 0.35));
  outline-offset: 2px;
}

.wpsxep-lh-qsummary::-webkit-details-marker {
  display: none;
}

.wpsxep-lh-qsummary::before {
  content: "▶ ";
  font-size: 0.75em;
  opacity: 0.85;
}

.wpsxep-lh-qdetails[open] .wpsxep-lh-qsummary::before {
  content: "▼ ";
}

.wpsxep-lh-answer {
  margin-top: 12px;
  padding: 14px 16px;
  background: var(--wpsxep-surface-soft, #f8fafc);
  border: 1px solid var(--wpsxep-border-soft, #e8eaed);
  border-radius: 10px;
  color: var(--wpsxep-text-subtle);
  line-height: 1.6;
}

.wpsxep-lh-answer-block strong,
.wpsxep-lh-analysis-block strong {
  display: inline-block;
  margin-right: 0.45rem;
  color: var(--wpsxep-text-main);
  font-weight: 700;
}

.wpsxep-lh-analysis-block {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed color-mix(in srgb, var(--tb--border, #e2e8f0) 90%, transparent);
}

.wpsxep-lh-nav-tier {
  font-size: 13px;
  font-weight: 700;
  margin: 12px 0 8px;
  color: var(--wpsxep-text-subtle);
}

.wpsxep-lh-nav-tier:first-child {
  margin-top: 0;
}

.wpsxep-lh-navgrid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.wpsxep-lh-navgrid a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25rem;
  height: 2.25rem;
  padding: 0 6px;
  border: 1px solid var(--wpsxep-border-soft);
  border-radius: 999px;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--wpsxep-text-main);
  background: var(--wpsxep-surface-card);
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.wpsxep-lh-navgrid a:hover {
  border-color: var(--tb--main, var(--wpsxep-accent));
  color: var(--tb--main, var(--wpsxep-accent));
}

.wpsxep-lh-nav-panel .wpsxep-lh-navgrid a.is-active {
  background: var(--tb--main, var(--wpsxep-accent));
  border-color: var(--tb--main, var(--wpsxep-accent));
  color: #fff;
  box-shadow: 0 2px 8px color-mix(in srgb, var(--tb--main, var(--wpsxep-accent)) 35%, transparent);
}

.wpsxep-lh-nav-panel .wpsxep-lh-navgrid a.is-active:hover {
  background: var(--wpsxep-accent-hover);
  border-color: var(--wpsxep-accent-hover);
  color: #fff;
}

.wpsxep-lh-meta-panel p,
.wpsxep-lh-nav-panel p {
  margin: 0.4rem 0;
  font-size: 14px;
  color: var(--wpsxep-text-subtle);
}

.wpsxep-lh-meta-panel strong,
.wpsxep-lh-nav-panel strong {
  color: var(--wpsxep-text-main);
}

html.darking .wpsxep-lh-card,
body.dark-on .wpsxep-lh-card, body.dark-theme .wpsxep-lh-card {
  box-shadow: none;
}

html.darking .wpsxep-lh-card:hover,
body.dark-on .wpsxep-lh-card:hover, body.dark-theme .wpsxep-lh-card:hover {
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--wpsxep-accent) 35%, transparent);
}

html.darking .wpsxep-lh-section-title,
body.dark-on .wpsxep-lh-section-title, body.dark-theme .wpsxep-lh-section-title {
  background: linear-gradient(
    105deg,
    color-mix(in srgb, var(--tb--main, var(--wpsxep-accent)) 16%, #0f172a) 0%,
    #0f172a 55%,
    #111827 100%
  );
  border-color: color-mix(in srgb, var(--tb--border, #334155) 90%, transparent);
  box-shadow: none;
}

html.darking .wpsxep-lh-question,
body.dark-on .wpsxep-lh-question, body.dark-theme .wpsxep-lh-question {
  background: #111827;
  border-color: #334155;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

html.darking .wpsxep-lh-detail-layout .wpsxep-lh-question:hover,
body.dark-on .wpsxep-lh-detail-layout .wpsxep-lh-question:hover, body.dark-theme .wpsxep-lh-detail-layout .wpsxep-lh-question:hover {
  border-color: color-mix(in srgb, var(--tb--main, var(--wpsxep-accent)) 45%, #334155);
}

html.darking .wpsxep-lh-answer,
body.dark-on .wpsxep-lh-answer, body.dark-theme .wpsxep-lh-answer {
  background: #0f172a;
  border-color: #334155;
}

@media (max-width: 782px) {
  .wpsxep-lh-layout {
    flex-direction: column;
  }

  .wpsxep-lh-bank-sidebar,
  .wpsxep-lh-detail-sidebar {
    flex: 1 1 auto;
    width: 100%;
    max-width: none;
    position: static;
  }
}