/* ======================================================================
 * 现代在线编译器风格在线编程页 — 左题面 / 右代码 + 底部抽屉
 * 支持亮色（默认）与暗色（.theme--dark）模式
 * ====================================================================== */

/* ===================== 设计令牌：IDE 页统一主色 ===================== */
html.page--problem_ide {
  --ide-primary: #1677ff;
  --ide-primary-rgb: 22, 119, 255;
  --ide-primary-hover: #4096ff;
  --ide-primary-active: #0958d9;
  /* 文字/描边用；暗色下提亮保证对比度 */
  --ide-primary-text: #1677ff;
  --ide-success: #16a34a;
  --ide-success-hover: #22c55e;
  --ide-success-active: #15803d;
  --ide-danger: #ef4444;
}
html.page--problem_ide.theme--dark,
html.page--problem_ide .theme--dark {
  --ide-primary-text: #69b1ff;
}

/* ===================== 页面级覆盖：隐藏 footer、填满视口、禁止滚动 ===================== */
html.page--problem_ide,
html.page--problem_ide body { overflow: hidden !important; height: 100%; margin: 0; }
.page--problem_ide .footer { display: none !important; }

/* ===================== 首屏加载：居中蓝色圆圈 ===================== */
.problem-ide-page-loader {
  position: fixed;
  z-index: 100000;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.96);
  transition: opacity 0.35s ease, visibility 0.35s ease;
}
.theme--dark .problem-ide-page-loader {
  background: rgba(17, 17, 17, 0.92);
}
.problem-ide-page-loader__spinner {
  width: 44px;
  height: 44px;
  border: 3px solid rgba(var(--ide-primary-rgb),  0.2);
  border-top-color: var(--ide-primary);
  border-radius: 50%;
  animation: problem-ide-page-spin 0.75s linear infinite;
}
@keyframes problem-ide-page-spin {
  to { transform: rotate(360deg); }
}
.problem-ide-page-loader.problem-ide-page-loader--hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
/* 首屏左侧栏保持可见；题面骨架由模板内联样式控制，就绪后去掉 --boot */
.problem-ide-root.problem-ide-root--boot,
.problem-ide-root.problem-ide-root--ready {
  visibility: visible;
}
.problem-ide-root.problem-ide-root--ide-pending .problem-ide-right {
  position: relative;
}
/* ===================== 编辑器骨架屏（Monaco 就绪前） ===================== */
.problem-ide-right__pending {
  --skel-surface: #fafbfc;
  --skel-line: #e8eaed;
  --skel-editor-bg: #ffffff;
  --skel-ln: #c7ccd4;
  --skel-block: rgba(15, 23, 42, 0.06);
  --skel-shine: rgba(15, 23, 42, 0.11);
  position: absolute;
  inset: 8px 8px 8px 0;
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: transparent;
  pointer-events: auto;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}
.theme--dark .problem-ide-right__pending {
  --skel-surface: #252526;
  --skel-line: #3c3c3c;
  --skel-editor-bg: #1e1e1e;
  --skel-ln: #4b4b4b;
  --skel-block: rgba(255, 255, 255, 0.06);
  --skel-shine: rgba(255, 255, 255, 0.12);
}
.problem-ide-root:not(.problem-ide-root--ide-pending) .problem-ide-right__pending {
  opacity: 0;
  visibility: hidden;
}
.problem-ide-skel__editor-card {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--skel-line);
  border-radius: 10px;
  background: var(--skel-editor-bg);
}
.problem-ide-skel__toolbar,
.problem-ide-skel__drawer {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  background: var(--skel-surface);
}
.problem-ide-skel__toolbar {
  height: 42px;
  border-bottom: 1px solid var(--skel-line);
}
/* 与抽屉高度一致：首屏由 --ide-drawer-h 记住上次高度，顶部 38px 为操作栏 */
.problem-ide-skel__drawer {
  height: var(--ide-drawer-h, 220px);
  align-items: flex-start;
  padding-top: 6px;
  box-sizing: border-box;
  overflow: hidden;
  border: 1px solid var(--skel-line);
  border-radius: 10px;
  background: linear-gradient(var(--skel-surface) 38px, var(--skel-line) 38px, var(--skel-line) 39px, var(--skel-editor-bg) 39px);
}
.problem-ide-skel__spacer { flex: 1 1 auto; }
.problem-ide-skel__editor {
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  padding-top: 8px;
}
/* 编辑器区按 Monaco 实际主题着色，与站点明暗无关 */
.problem-ide-root--editor-dark .problem-ide-skel__editor {
  --skel-ln: #4b4b4b;
  --skel-block: rgba(255, 255, 255, 0.06);
  --skel-shine: rgba(255, 255, 255, 0.12);
  background: #1e1e1e;
}
.problem-ide-root:not(.problem-ide-root--editor-dark) .problem-ide-skel__editor {
  --skel-ln: #c7ccd4;
  --skel-block: rgba(15, 23, 42, 0.06);
  --skel-shine: rgba(15, 23, 42, 0.11);
  background: #ffffff;
}
.problem-ide-skel__line {
  display: flex;
  align-items: center;
  height: 19px;
}
.problem-ide-skel__ln {
  flex: 0 0 auto;
  width: 44px;
  padding-right: 18px;
  box-sizing: border-box;
  color: var(--skel-ln);
  font: 12px/19px ui-monospace, Menlo, Consolas, monospace;
  text-align: right;
}
.problem-ide-skel__block {
  display: inline-block;
  flex: 0 0 auto;
  height: 10px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--skel-block) 0%, var(--skel-shine) 50%, var(--skel-block) 100%);
  background-size: 200% 100%;
  animation: problem-ide-skel-shimmer 1.4s ease-in-out infinite;
}
.problem-ide-skel__block--field { height: 26px; border-radius: 6px; }
.problem-ide-skel__block--btn { height: 26px; border-radius: 6px; }
.problem-ide-skel__code { max-width: calc(100% - 64px); }
@keyframes problem-ide-skel-shimmer {
  from { background-position: 100% 0; }
  to { background-position: -100% 0; }
}
@media (prefers-reduced-motion: reduce) {
  .problem-ide-skel__block { animation: none; }
}
/* 仅供读屏；加载失败时浮到骨架中央 */
.problem-ide-right__pending-text {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.problem-ide-right__pending--error .problem-ide-skel__block { animation: none; }
.problem-ide-right__pending--error .problem-ide-right__pending-text {
  top: 50%;
  left: 50%;
  width: auto;
  height: auto;
  margin: 0;
  padding: 8px 16px;
  clip: auto;
  transform: translate(-50%, -50%);
  border-radius: 8px;
  background: rgba(245, 34, 45, 0.08);
  color: #cf1322;
  font-size: 13px;
}
.theme--dark .problem-ide-right__pending--error .problem-ide-right__pending-text {
  background: rgba(245, 34, 45, 0.16);
  color: #ff7875;
}

/* ===================== 全局容器 ===================== */
.problem-ide-root {
  display: flex;
  flex-direction: row;
  height: calc(100vh - 46px);
  overflow: hidden;
  background: #f0f2f5;
  position: fixed;
  top: 46px;
  left: 0;
  right: 0;
  bottom: 0;
}
.problem-ide-root .row { padding: 0; margin: 0; }

/* ===================== 左侧题面 Tab 样式 ===================== */
.problem-ide-tabbar {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  box-sizing: border-box;
  height: 42px;
  min-height: 42px;
  max-height: 42px;
  border-bottom: 1px solid #e8eaed;
  background: #fafbfc;
  min-width: 0;
  /* 窄题面时与 ps_list .pd-main-card 的 flex-wrap:wrap 对抗：整栏单行，超出部分裁掉（不出现换行/横向滚动条） */
  overflow-x: hidden;
}
/* 题面 Tab 与控制台 Tab 共用：Glass 胶囊 + 两两之间短分隔线（与顶栏 Glass 主题一致） */
.problem-ide-left,
.problem-ide-drawer {
  --ide-tab-fg: #52525b;
  --ide-tab-fg-strong: #09090b;
  --ide-tab-hover-bg: rgba(15, 23, 42, 0.05);
  --ide-tab-active-bg: rgba(15, 23, 42, 0.07);
  --ide-tab-sep: rgba(15, 23, 42, 0.12);
}
.theme--dark .problem-ide-left,
.theme--dark .problem-ide-drawer {
  --ide-tab-fg: #a1a1aa;
  --ide-tab-fg-strong: #fafafa;
  --ide-tab-hover-bg: rgba(255, 255, 255, 0.07);
  --ide-tab-active-bg: rgba(255, 255, 255, 0.1);
  --ide-tab-sep: rgba(255, 255, 255, 0.12);
}
.problem-ide-left ul.section__tab-header.flex-row {
  flex: 1 1 auto;
  min-width: 0;
  flex-wrap: nowrap !important;
  gap: 5px;
  margin: 0;
  padding: 0 8px;
  border-bottom: 0;
  overflow-x: hidden;
  /* Hydro .section__tab-header 自带右侧渐隐和负 margin，首屏就要盖掉 */
  -webkit-mask-image: none;
  mask-image: none;
}
/* .problem-ide-root 前缀：需压过 Hydro `.section__tab-container:not(.immersive) .section__tab-header-item` 的 3px 顶边与 hover 灰底 */
.problem-ide-root .problem-ide-left .section__tab-header-item,
.problem-ide-tab {
  position: relative;
  height: auto;
  margin: 4px 0;
  padding: 4px 11px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--ide-tab-fg);
  transition: color 0.18s ease, background-color 0.18s ease;
}
.problem-ide-root .problem-ide-left .section__tab-header-item {
  font-size: 12px;
  line-height: 1.3;
}
.problem-ide-left .section__tab-header-item + .section__tab-header-item::before,
.problem-ide-tab + .problem-ide-tab::before {
  content: '';
  position: absolute;
  left: -3px;
  top: 50%;
  width: 1px;
  height: 12px;
  transform: translateY(-50%);
  background: var(--ide-tab-sep);
  pointer-events: none;
  transition: opacity 0.18s ease;
}
.problem-ide-left .section__tab-header-item:hover::before,
.problem-ide-left .section__tab-header-item.tab--active::before,
.problem-ide-left .section__tab-header-item:hover + .section__tab-header-item::before,
.problem-ide-left .section__tab-header-item.tab--active + .section__tab-header-item::before,
.problem-ide-tab:hover::before,
.problem-ide-tab--active::before,
.problem-ide-tab:hover + .problem-ide-tab::before,
.problem-ide-tab--active + .problem-ide-tab::before {
  opacity: 0;
}
.problem-ide-root .problem-ide-left .section__tab-header-item:hover,
.problem-ide-tab:hover {
  background: var(--ide-tab-hover-bg);
  border-color: transparent;
  color: var(--ide-tab-fg-strong);
}
.problem-ide-root .problem-ide-left .section__tab-header-item.tab--active,
.problem-ide-tab--active {
  background: var(--ide-tab-active-bg);
  border-color: transparent;
  color: var(--ide-tab-fg-strong);
  font-weight: 600;
}
.problem-ide-left .section__tab-header-item:focus-visible,
.problem-ide-tab:focus-visible {
  outline: 2px solid var(--ide-primary);
  outline-offset: -2px;
}
/* .pd-main-card .section__tab-header-item { display:inline-flex } 会盖掉 [hidden] 的 display:none */
.problem-ide-left .section__tab-header-item[hidden] {
  display: none !important;
}
.problem-ide-sprint-promo {
  flex: 0 1 auto;
  min-width: 0;
  max-width: 168px;
  align-self: center;
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 24px;
  margin: 0 6px 0 2px;
  padding: 0 2px 0 10px;
  box-sizing: border-box;
  border: 1px solid rgba(234, 88, 12, 0.22);
  border-radius: 999px;
  background: rgba(249, 115, 22, 0.08);
  overflow: hidden;
  white-space: nowrap;
  transition: background-color 0.18s ease, border-color 0.18s ease;
}
.problem-ide-sprint-promo:hover {
  background: rgba(249, 115, 22, 0.14);
  border-color: rgba(234, 88, 12, 0.36);
}
.problem-ide-sprint-promo__link {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 12px;
  font-weight: 500;
  line-height: 22px;
  letter-spacing: 0.01em;
  color: #c2410c !important;
  text-decoration: none !important;
}
.problem-ide-sprint-promo__link:hover {
  color: #9a3412 !important;
  text-decoration: none !important;
}
.problem-ide-sprint-promo__close {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-left: 2px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: rgba(194, 65, 12, 0.6);
  font-size: 13px;
  line-height: 18px;
  cursor: pointer;
}
.problem-ide-sprint-promo__close:hover {
  background: rgba(234, 88, 12, 0.12);
  color: #c2410c;
}
.theme--dark .problem-ide-sprint-promo {
  background: rgba(251, 146, 60, 0.1);
  border-color: rgba(251, 146, 60, 0.26);
}
.theme--dark .problem-ide-sprint-promo:hover {
  background: rgba(251, 146, 60, 0.16);
}
.theme--dark .problem-ide-sprint-promo__link { color: #fdba74 !important; }
.theme--dark .problem-ide-sprint-promo__link:hover { color: #fed7aa !important; }
.theme--dark .problem-ide-sprint-promo__close { color: rgba(253, 186, 116, 0.6); }
.theme--dark .problem-ide-sprint-promo__close:hover { background: rgba(251, 146, 60, 0.16); color: #fdba74; }
.problem-ide-root--statement-collapsed .problem-ide-sprint-promo {
  display: none !important;
}
@media (max-width: 900px) {
  .problem-ide-sprint-promo {
    display: none !important;
  }
}
.problem-ide-tab-actions {
  flex: 0 1 auto;
  /* 两枚布局按钮 + gap + 左右 padding 量级，避免栏宽被压没后先吃掉全屏/折叠 */
  min-width: 86px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  border-left: 1px solid #eef0f3;
  overflow-x: hidden;
}
/* 顶栏变窄时：章节/题库/外链先被裁切，全屏与折叠固定在右侧尽量可见 */
.problem-ide-tab-actions > #problemIdeStatementExpandBtn {
  margin-left: auto;
}
.problem-ide-tab-actions > .problem-ide-statement-layout-btn {
  flex-shrink: 0;
}
.problem-ide-tab-actions > .problem-ide-section-switcher,
.problem-ide-tab-actions > .problem-ide-pset-drawer-trigger,
.problem-ide-tab-actions > a.problem-ide-tab-action {
  flex-shrink: 1;
  min-width: 0;
  overflow-x: hidden;
}
.problem-ide-tab-actions .problem-ide-section-switcher__btn,
.problem-ide-tab-actions .problem-ide-pset-drawer-btn {
  max-width: 100%;
}
.problem-ide-tab-action {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  color: #64748b !important;
  background: transparent;
  cursor: pointer;
  text-decoration: none !important;
}
.problem-ide-tab-action:hover {
  color: var(--ide-primary);
  background: #eef6ff;
}
.problem-ide-tab-action svg {
  width: 17px;
  height: 17px;
  fill: currentColor;
}
.problem-ide-tab-action--labeled {
  width: auto;
  min-width: 28px;
  padding: 0 8px;
  gap: 4px;
}
.problem-ide-tab-action__label {
  font-size: 12px;
  line-height: 1;
  white-space: nowrap;
}
.problem-ide-tab-action--active {
  color: var(--ide-primary) !important;
  background: #eef6ff;
}
.problem-ide-statement-layout-btn svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.65;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.problem-ide-pset-drawer-trigger {
  display: inline-flex;
  align-items: center;
}

.problem-ide-section-switcher {
  position: relative;
  display: inline-flex;
  align-items: center;
  overflow: visible;
}
.problem-ide-section-switcher[hidden] {
  display: none !important;
}
.problem-ide-section-switcher__menu {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 10050;
  width: min(360px, 72vw);
  max-height: min(420px, 58vh);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.16);
}
.problem-ide-section-switcher__menu[hidden] {
  display: none !important;
}
.problem-ide-section-switcher__header {
  flex: 0 0 auto;
  padding: 10px 12px 8px;
  border-bottom: 1px solid #eef2f7;
  font-size: 12px;
  font-weight: 700;
  color: #111827;
  background: #fafbfc;
}
.problem-ide-section-switcher__body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 6px;
}
.problem-ide-section-switcher__item {
  display: grid;
  grid-template-columns: 20px 52px minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px;
  min-height: 38px;
  padding: 6px 8px;
  border-radius: 8px;
  color: #111827;
  text-decoration: none !important;
}
.problem-ide-section-switcher__item:hover {
  background: #f8fafc;
}
.problem-ide-section-switcher__item--current {
  background: #f5f9ff;
  box-shadow: inset 3px 0 0 var(--ide-primary);
}
.problem-ide-section-switcher__item--current:hover {
  background: #eef6ff;
}
.problem-ide-section-switcher__status {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #d1d5db;
  border-radius: 999px;
}
.problem-ide-section-switcher__status svg {
  width: 13px;
  height: 13px;
  fill: #22c55e;
}
.problem-ide-section-switcher__status--accepted {
  border-color: transparent;
}
.problem-ide-section-switcher__idx {
  font-size: 12px;
  font-weight: 700;
}
.problem-ide-section-switcher__title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
  font-weight: 600;
}
.problem-ide-section-switcher__diff {
  min-width: 30px;
  font-size: 11px;
  font-weight: 600;
  text-align: right;
}
.problem-ide-section-switcher__diff--easy { color: #14b8a6; }
.problem-ide-section-switcher__diff--medium { color: #eab308; }
.problem-ide-section-switcher__diff--hard { color: #ef476f; }
.problem-ide-section-switcher__empty,
.problem-ide-section-switcher__loading,
.problem-ide-section-switcher__error {
  padding: 18px 12px;
  text-align: center;
  font-size: 12px;
  color: #64748b;
}
.problem-ide-section-switcher__loading {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.problem-ide-section-switcher__spinner {
  width: 12px;
  height: 12px;
  border: 2px solid #dbe3ee;
  border-top-color: var(--ide-primary);
  border-radius: 999px;
  animation: problem-ide-pset-footer-spin 0.8s linear infinite;
}
.problem-ide-section-switcher__btn[aria-expanded="true"] {
  color: var(--ide-primary);
  background: #eef6ff;
}
.theme--dark .problem-ide-section-switcher__menu {
  background: #1f1f1f;
  border-color: #404040;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.42);
}
.theme--dark .problem-ide-section-switcher__header {
  background: #242424;
  border-bottom-color: #333;
  color: #e5e7eb;
}
.theme--dark .problem-ide-section-switcher__item {
  color: #e5e7eb;
}
.theme--dark .problem-ide-section-switcher__item:hover {
  background: #2a2a2a;
}
.theme--dark .problem-ide-section-switcher__item--current,
.theme--dark .problem-ide-section-switcher__item--current:hover {
  background: rgba(var(--ide-primary-rgb),  0.12);
  box-shadow: inset 3px 0 0 var(--ide-primary-text);
}
.theme--dark .problem-ide-section-switcher__empty,
.theme--dark .problem-ide-section-switcher__loading,
.theme--dark .problem-ide-section-switcher__error {
  color: #8b949e;
}
.theme--dark .problem-ide-section-switcher__spinner {
  border-color: #3f4d63;
  border-top-color: var(--ide-primary-text);
}
.theme--dark .problem-ide-section-switcher__btn[aria-expanded="true"] {
  color: var(--ide-primary-text);
  background: #1f2937;
}

/* 考试模式：题解/笔记/AI 内容区强制隐藏（避免 Tab 状态与脚本不一致时仍露出） */
.problem-ide-root--exam #content-textSol,
.problem-ide-root--exam #content-videoSol,
.problem-ide-root--exam #content-myNote,
.problem-ide-root--exam #content-aiAnalysis {
  display: none !important;
}
.theme--dark .problem-ide-tabbar {
  border-bottom-color: #3c3c3c;
  background: #252526;
}
.theme--dark .problem-ide-left ul.section__tab-header.flex-row {
  border-bottom-color: #333;
}
/* 需压过 ps_list `.theme--dark .pd-main-card .section__tab-header-item:hover` 的蓝字/顶边 */
.theme--dark .problem-ide-root .problem-ide-left .section__tab-header-item {
  background: transparent;
  border-color: transparent;
  /* 压过主题 .theme--dark .section__tab-header-item 的 color !important */
  color: var(--ide-tab-fg) !important;
}
.theme--dark .problem-ide-root .problem-ide-left .section__tab-header-item:hover {
  background: var(--ide-tab-hover-bg);
  color: var(--ide-tab-fg-strong) !important;
}
.theme--dark .problem-ide-root .problem-ide-left .section__tab-header-item.tab--active {
  background: var(--ide-tab-active-bg);
  color: var(--ide-tab-fg-strong) !important;
}
.theme--dark .problem-ide-tab-actions { border-left-color: #333; }
.theme--dark .problem-ide-tab-action { color: #8b949e; }
.theme--dark .problem-ide-tab-action:hover { color: var(--ide-primary-text); background: #1f2937; }
.theme--dark .problem-ide-tab-action--active { color: var(--ide-primary-text) !important; background: #1f2937; }

/* ===================== 左侧题面 ===================== */
.problem-ide-left {
  flex: var(--ide-split-left, 0 0 50%);
  min-width: 10%;
  max-width: 90%;
  display: flex;
  flex-direction: column;
  background: transparent;
  overflow: hidden;
  position: relative;
  z-index: 1;
  padding: 8px 0 8px 8px;
  box-sizing: border-box;
}

/* 题面 Tab 与正文分区：Tab 不随正文滚动 */
.problem-ide-left__main {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 10px;
  background: #fff;
  /* 为 .problem-ide-statement-toc 绝对定位提供参考系（仅在放大题面时浮现） */
  position: relative;
}

/* 题面内标题行：左侧收藏星标 + 题号与标题 */
.problem-content .problem-ide-statement-title,
.problem-content-container .problem-ide-statement-title {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin: 0 0 10px;
  font-size: 1.35em;
  font-weight: 700;
  line-height: 1.35;
  color: #1a1a1a;
}
.problem-content .problem-ide-statement-title #pd-star-root,
.problem-content-container .problem-ide-statement-title #pd-star-root {
  flex-shrink: 0;
  margin: 0;
}
.problem-content .problem-ide-statement-title__text,
.problem-content-container .problem-ide-statement-title__text {
  min-width: 0;
}
/* 题目标题行右端的反馈按钮 */
.problem-content .problem-ide-statement-title .problem-ide-feedback-btn,
.problem-content-container .problem-ide-statement-title .problem-ide-feedback-btn {
  margin-left: auto;
  flex-shrink: 0;
}
.theme--dark .problem-content .problem-ide-statement-title,
.theme--dark .problem-content-container .problem-ide-statement-title {
  color: #e8edf5;
}

/* 题目内容区内 h1 下方的标签条：沿用 ps_list 的 .pd-header-card .problem__tags，此处去掉卡片外壳 */
.problem-content .problem-ide-content-meta.pd-header-card,
.problem-content-container .problem-ide-content-meta.pd-header-card {
  margin: 0;
  border-radius: 0;
  box-shadow: none;
  border: none;
  background: transparent;
}
.problem-content .problem-ide-content-meta .section__body,
.problem-content-container .problem-ide-content-meta .section__body {
  padding: 0 2px 14px;
  margin: 0;
}
.theme--dark .problem-content .problem-ide-content-meta.pd-header-card,
.theme--dark .problem-content-container .problem-ide-content-meta.pd-header-card {
  background: transparent;
}

.problem-content .problem-ide-content-meta ul.problem-ide-content-meta__tags,
.problem-content-container .problem-ide-content-meta ul.problem-ide-content-meta__tags {
  justify-content: flex-start;
  width: 100%;
}
/* 尝试 / 已通过 / 所属公司 / 算法标签：与原时限胶囊同色。难度配色保持原规则 */
.problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--tried,
.problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--ac,
.problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--company,
.problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--alg-toggle,
.problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.pd-alg-tag-rest,
.problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.pd-user-star-tag,
.problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--tried,
.problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--ac,
.problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--company,
.problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--alg-toggle,
.problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.pd-alg-tag-rest,
.problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.pd-user-star-tag {
  background: #f1f5f9;
  color: #475569;
}
.problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--company .problem__tag-item__link,
.problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--company .problem__tag-item__link {
  color: inherit;
  font-weight: 600;
}
.problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--alg-toggle:hover,
.problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--alg-toggle:hover {
  background: #e2e8f0;
  color: #334155;
}
.theme--dark .problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--tried,
.theme--dark .problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--ac,
.theme--dark .problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--company,
.theme--dark .problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--alg-toggle,
.theme--dark .problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.pd-alg-tag-rest,
.theme--dark .problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.pd-user-star-tag,
.theme--dark .problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--tried,
.theme--dark .problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--ac,
.theme--dark .problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--company,
.theme--dark .problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--alg-toggle,
.theme--dark .problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.pd-alg-tag-rest,
.theme--dark .problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.pd-user-star-tag {
  background: #1e293b;
  color: #cbd5e1;
}
.theme--dark .problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--company .problem__tag-item__link,
.theme--dark .problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--company .problem__tag-item__link {
  color: inherit;
}
.theme--dark .problem-content .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--alg-toggle:hover,
.theme--dark .problem-content-container .problem-ide-content-meta.pd-header-card .problem__tag-item.bp6-tag.problem__tag-item--alg-toggle:hover {
  background: #334155;
  color: #e2e8f0;
}
/* 考试模式：练习向标签全部隐藏。时限胶囊已从题面拿掉，整条 meta 不再留空 */
.problem-ide-root--exam .problem-ide-content-meta {
  display: none !important;
}
/*
 * 题面 meta 在 .markdown-body 内，部分全局样式会与 .hasjs .hasjs--hide 同优先级后载覆盖，导致算法标签默认仍显示。
 * 用更高特异性 + !important 固定默认折叠；展开时与题目详情页点击行为一致（见 problem_ide.page.ts）。
 */
.hasjs .markdown-body .problem-ide-content-meta.pd-header-card ul.problem__tags .problem-ide-alg-tags-block .problem-ide-alg-collapsible.hasjs--hide {
  display: none !important;
}
.hasjs .markdown-body .problem-ide-content-meta.pd-header-card ul.problem__tags .problem-ide-alg-tags-block.problem-ide-alg-expanded .problem-ide-alg-collapsible.hasjs--hide {
  display: inline-flex !important;
}
/* 非 .markdown-body 包裹时展开仍生效 */
.problem-ide-alg-tags-block.problem-ide-alg-expanded .problem-ide-alg-collapsible.hasjs--hide {
  display: inline-flex !important;
}

.problem-ide-left__tabs {
  flex-shrink: 0;
  box-sizing: border-box;
  height: 42px;
  min-height: 42px;
  max-height: 42px;
  background: #fafbfc;
}
/* 压过 ps_list 给 .pd-main-card .section__tab-container 的白底，与右侧工具栏同色、同高 */
.problem-ide-root .pd-main-card .section__tab-container.problem-ide-left__tabs {
  box-sizing: border-box;
  height: 42px;
  min-height: 42px;
  max-height: 42px;
  background: #fafbfc;
  border-bottom-color: #e8eaed;
}
.theme--dark .problem-ide-left__tabs,
.theme--dark .problem-ide-root .pd-main-card .section__tab-container.problem-ide-left__tabs {
  background: #252526;
  border-bottom-color: #3c3c3c;
}

.problem-ide-left__scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}
.problem-ide-root--statement-expanded .problem-ide-gutter,
.problem-ide-root--statement-expanded .problem-ide-right {
  display: none !important;
}
.problem-ide-root--editor-hidden .problem-ide-right {
  display: none !important;
}
.problem-ide-root--editor-hidden .problem-ide-left {
  flex: 1 1 auto !important;
  max-width: none !important;
  min-width: 0 !important;
  padding: 8px;
}
.problem-ide-root--statement-expanded .problem-ide-left {
  flex: 1 1 100% !important;
  max-width: none !important;
  min-width: 0 !important;
  width: auto !important;
  padding: 8px;
}
/* 放大题面：正文居中专栏，宽度与「我的笔记」/代码笔记阅读区一致（最高 900px） */
.problem-ide-root--statement-expanded .problem-ide-left__scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.problem-ide-root--statement-expanded .problem-content-container {
  width: 100%;
  max-width: 900px;
  box-sizing: border-box;
  padding: 12px 20px 24px;
}
/* 放大题面：题面正文排版对齐代码笔记 codenote-textsol（已带 .codenote-textsol-body 的 Tab 不重复覆盖） */
.problem-ide-root--statement-expanded .problem-content-container .section__body.markdown-body:not(.codenote-textsol-body),
.problem-ide-root--statement-expanded .problem-content-container .problem_content:not(.codenote-textsol-body) {
  font-size: 18px;
  line-height: 1.5;
  font-weight: 400;
  color: #010101;
  font-family: 'Noto Sans SC', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.problem-ide-root--statement-expanded .problem-content-container .problem_content:not(.codenote-textsol-body) h1,
.problem-ide-root--statement-expanded .problem-content-container .section__body.markdown-body:not(.codenote-textsol-body) h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.35;
  margin-top: 0;
  margin-bottom: 24px;
  padding-bottom: 16px;
  color: #202124;
}
.problem-ide-root--statement-expanded .problem-content-container .problem_content:not(.codenote-textsol-body) h2,
.problem-ide-root--statement-expanded .problem-content-container .section__body.markdown-body:not(.codenote-textsol-body) h2 {
  font-size: 26px;
  font-weight: 600;
  line-height: 1.4;
  margin-top: 20px;
  margin-bottom: 20px;
  color: #202124;
}
.problem-ide-root--statement-expanded .problem-content-container .problem_content:not(.codenote-textsol-body) h3,
.problem-ide-root--statement-expanded .problem-content-container .section__body.markdown-body:not(.codenote-textsol-body) h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.45;
  margin-top: 32px;
  margin-bottom: 16px;
  color: #3c4043;
}
.problem-ide-root--statement-expanded .problem-content-container .problem_content:not(.codenote-textsol-body) p,
.problem-ide-root--statement-expanded .problem-content-container .section__body.markdown-body:not(.codenote-textsol-body) p {
  margin-bottom: 12px;
}
.problem-ide-root--statement-expanded .problem-content-container .problem_content:not(.codenote-textsol-body) :not(pre) > code,
.problem-ide-root--statement-expanded .problem-content-container .section__body.markdown-body:not(.codenote-textsol-body) :not(pre) > code {
  background: #f3f4f6;
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 14px;
  color: #e83e8c;
}
.problem-ide-root--statement-expanded .problem-content-container .problem-ide-statement-title {
  font-size: 32px;
  line-height: 1.35;
  margin-bottom: 16px;
}
.theme--dark .problem-ide-root--statement-expanded .problem-content-container .section__body.markdown-body:not(.codenote-textsol-body),
.theme--dark .problem-ide-root--statement-expanded .problem-content-container .problem_content:not(.codenote-textsol-body) {
  color: #e8eaed;
}
.theme--dark .problem-ide-root--statement-expanded .problem-content-container .problem_content:not(.codenote-textsol-body) h1,
.theme--dark .problem-ide-root--statement-expanded .problem-content-container .section__body.markdown-body:not(.codenote-textsol-body) h1,
.theme--dark .problem-ide-root--statement-expanded .problem-content-container .problem_content:not(.codenote-textsol-body) h2,
.theme--dark .problem-ide-root--statement-expanded .problem-content-container .section__body.markdown-body:not(.codenote-textsol-body) h2 {
  color: #e8eaed;
}
.theme--dark .problem-ide-root--statement-expanded .problem-content-container .problem_content:not(.codenote-textsol-body) h3,
.theme--dark .problem-ide-root--statement-expanded .problem-content-container .section__body.markdown-body:not(.codenote-textsol-body) h3 {
  color: #c9d1d9;
}
.theme--dark .problem-ide-root--statement-expanded .problem-content-container .problem_content:not(.codenote-textsol-body) :not(pre) > code,
.theme--dark .problem-ide-root--statement-expanded .problem-content-container .section__body.markdown-body:not(.codenote-textsol-body) :not(pre) > code {
  background: #30363d;
  color: #ff7b72;
}
.theme--dark .problem-ide-root--statement-expanded .problem-content-container .problem-ide-statement-title {
  color: #e8edf5;
}

/* ===================== 放大题面：右侧目录（宽屏浮层 / 窄屏抽屉，对齐代码笔记 right-toc） ===================== */
/* 断点与 codenote.page.ts RIGHT_TOC_DRAWER_MQ、(max-width: 1299px) 一致 */
.problem-ide-statement-toc-shell {
  position: static;
}
.problem-ide-statement-toc-drawer-btn {
  display: none;
  align-items: center;
  gap: 8px;
  position: fixed;
  z-index: 2001;
  right: max(12px, env(safe-area-inset-right));
  top: 0;
  bottom: 0;
  height: fit-content;
  margin-top: auto;
  margin-bottom: auto;
  width: max-content;
  max-width: calc(100vw - 24px);
  box-sizing: border-box;
  padding: 10px 14px;
  border: 1px solid #e5e7eb;
  border-radius: 999px;
  background: #ffffff;
  color: #374151;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.12);
}
.problem-ide-statement-toc-drawer-btn svg {
  display: block;
  width: 16px;
  height: 16px;
  fill: currentColor;
}
.problem-ide-statement-toc-drawer-btn:hover,
.problem-ide-statement-toc-drawer-btn:focus-visible {
  background: #f9fafb;
  color: var(--ide-primary);
}
.problem-ide-statement-toc-drawer-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1998;
  background: rgba(15, 23, 42, 0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.problem-ide-root--statement-toc-drawer-open .problem-ide-statement-toc-drawer-backdrop {
  display: block;
  opacity: 1;
  pointer-events: auto;
}
.problem-ide-statement-toc-shell--empty .problem-ide-statement-toc,
.problem-ide-statement-toc-shell--empty .problem-ide-statement-toc-drawer-btn,
.problem-ide-statement-toc-shell--empty .problem-ide-statement-toc-drawer-backdrop {
  display: none !important;
}
.problem-ide-root:not(.problem-ide-root--statement-expanded) .problem-ide-statement-toc-drawer-btn,
.problem-ide-root:not(.problem-ide-root--statement-expanded) .problem-ide-statement-toc-drawer-backdrop {
  display: none !important;
}
/*
 * 宽屏：正文 max-width 900px 居中 → 右侧留白 ≈ (100% - min(900px, 100%)) / 2；
 * 目录宽 180px，在右侧留白中带状居中：right ≈ 留白/4 - 90px。
 */
.problem-ide-statement-toc {
  position: absolute;
  top: 50%;
  right: max(12px, calc((100% - min(900px, 100%)) / 4 - 90px));
  width: 180px;
  max-height: calc(100% - 32px);
  box-sizing: border-box;
  padding: 14px 14px 16px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.06);
  overflow-y: auto;
  z-index: 5;
  transform: translateY(-50%);
}
.problem-ide-root:not(.problem-ide-root--statement-expanded) .problem-ide-statement-toc {
  display: none !important;
}
.problem-ide-statement-toc__title {
  font-size: 14px;
  font-weight: 600;
  color: #1f2937;
  text-align: center;
  padding-bottom: 8px;
  margin-bottom: 8px;
  border-bottom: 1px solid #e5e7eb;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.problem-ide-statement-toc__list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.problem-ide-statement-toc__list li {
  margin: 0;
}
.problem-ide-statement-toc__link {
  display: block;
  padding: 5px 0 5px 10px;
  color: #6b7280;
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  border-left: 2px solid #dee1e5;
  transition: color 0.15s ease, border-color 0.15s ease;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.problem-ide-statement-toc__link:hover {
  color: var(--ide-primary);
}
.problem-ide-statement-toc__link--active {
  color: var(--ide-primary);
  font-weight: 600;
  border-left-color: var(--ide-primary);
}
.problem-ide-statement-toc__link--h2 {
  padding-left: 22px;
  font-size: 12.5px;
}
.problem-ide-statement-toc__link--h3 {
  padding-left: 34px;
  font-size: 12px;
  color: #8a94a3;
}
.problem-ide-statement-toc::-webkit-scrollbar { width: 4px; }
.problem-ide-statement-toc::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 2px; }
.problem-ide-statement-toc::-webkit-scrollbar-thumb:hover { background: #9ca3af; }
/* 窄屏：目录收进右侧抽屉，点「目录」滑出（与代码笔记 right-toc.css 一致） */
@media (max-width: 1299px) {
  .problem-ide-root--statement-expanded .problem-ide-statement-toc-shell:not(.problem-ide-statement-toc-shell--empty) .problem-ide-statement-toc-drawer-btn {
    display: flex;
  }
  .problem-ide-root--statement-expanded .problem-ide-statement-toc {
    position: fixed;
    left: auto !important;
    right: 0;
    top: 0 !important;
    width: min(300px, calc(100vw - 24px)) !important;
    max-width: min(300px, calc(100vw - 24px));
    height: 100vh;
    height: 100dvh;
    max-height: none !important;
    padding-top: max(72px, env(safe-area-inset-top));
    padding-bottom: max(16px, env(safe-area-inset-bottom));
    transform: translateX(100%);
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2000;
    border-left: 1px solid #e5e7eb;
    border-radius: 12px 0 0 12px;
    box-shadow: -6px 0 28px rgba(15, 23, 42, 0.14);
    pointer-events: none;
  }
  .problem-ide-root--statement-expanded.problem-ide-root--statement-toc-drawer-open .problem-ide-statement-toc {
    transform: translateX(0);
    pointer-events: auto;
  }
  .problem-ide-root--statement-expanded.problem-ide-root--statement-toc-drawer-open .problem-ide-statement-toc-drawer-btn {
    right: calc(min(300px, calc(100vw - 24px)) + 12px);
  }
  .problem-ide-root--statement-expanded:not(.problem-ide-root--statement-toc-drawer-open) .problem-ide-statement-toc,
  .problem-ide-root--statement-expanded:not(.problem-ide-root--statement-toc-drawer-open) .problem-ide-statement-toc * {
    pointer-events: none !important;
  }
  .problem-ide-root--statement-expanded.problem-ide-root--statement-toc-drawer-open .problem-ide-statement-toc * {
    pointer-events: auto;
  }
}
@media (min-width: 1300px) {
  .problem-ide-statement-toc-drawer-btn,
  .problem-ide-statement-toc-drawer-backdrop {
    display: none !important;
  }
  .problem-ide-root--statement-toc-drawer-open .problem-ide-statement-toc {
    transform: translateY(-50%);
  }
}
.theme--dark .problem-ide-statement-toc {
  background: #161b22;
  border-color: #30363d;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.45);
}
.theme--dark .problem-ide-statement-toc__title {
  color: #c9d1d9;
  border-bottom-color: #30363d;
}
.theme--dark .problem-ide-statement-toc__link {
  color: #8b949e;
  border-left-color: #30363d;
}
.theme--dark .problem-ide-statement-toc__link--h3 {
  color: #6e7681;
}
.theme--dark .problem-ide-statement-toc__link:hover { color: var(--ide-primary-text); }
.theme--dark .problem-ide-statement-toc__link--active {
  color: var(--ide-primary-text);
  border-left-color: var(--ide-primary-text);
}
.theme--dark .problem-ide-statement-toc::-webkit-scrollbar-thumb { background: #484f58; }
.theme--dark .problem-ide-statement-toc::-webkit-scrollbar-thumb:hover { background: #6e7681; }
.theme--dark .problem-ide-statement-toc-drawer-btn {
  background: #21262d;
  border-color: #30363d;
  color: #c9d1d9;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}
.theme--dark .problem-ide-statement-toc-drawer-btn:hover,
.theme--dark .problem-ide-statement-toc-drawer-btn:focus-visible {
  background: #30363d;
  color: var(--ide-primary-text);
}
.theme--dark .problem-ide-statement-toc-drawer-backdrop {
  background: rgba(1, 4, 9, 0.55);
}
.problem-ide-root--statement-collapsed .problem-ide-left__scroll {
  display: none !important;
}
.problem-ide-root--statement-collapsed .problem-ide-left {
  flex: 0 0 5% !important;
  max-width: 5% !important;
  min-width: 0 !important;
  width: 5% !important;
  padding-right: 4px;
}
.problem-ide-root--statement-collapsed .problem-ide-gutter {
  display: none !important;
}
.problem-ide-root--statement-collapsed .problem-ide-right {
  flex: 1 1 auto !important;
  min-width: 0 !important;
  padding-left: 4px;
}
.problem-ide-root--statement-collapsed .problem-ide-left__tabs,
.problem-ide-root--statement-collapsed .pd-main-card .section__tab-container.problem-ide-left__tabs,
.problem-ide-root--statement-collapsed .problem-ide-left__main {
  height: 100%;
  min-height: 0;
  max-height: none;
}
.problem-ide-root--statement-collapsed .problem-ide-tabbar {
  flex-direction: column;
  height: 100%;
  min-height: 0;
  max-height: none;
  align-items: stretch;
}
.problem-ide-root--statement-collapsed .problem-ide-left ul.section__tab-header.flex-row,
.problem-ide-root--statement-collapsed .pd-main-card ul.section__tab-header.flex-row {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column !important;
  flex-wrap: nowrap !important;
  align-items: stretch;
  gap: 10px;
  min-height: 0;
  padding: 10px 6px;
  overflow-x: hidden;
  overflow-y: auto;
}
.problem-ide-root--statement-collapsed .problem-ide-left .section__tab-header-item,
.problem-ide-root--statement-collapsed .pd-main-card .section__tab-header-item {
  display: flex !important;
  flex: 0 0 auto !important;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 6em;
  padding: 14px 6px;
  font-size: 12px;
  line-height: 1.6;
  text-align: center;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.08em;
  white-space: nowrap;
  border: 0;
  margin: 0;
  box-sizing: border-box;
  overflow: visible;
}
/* 竖排时胶囊之间已有 gap，不画竖向分隔线 */
.problem-ide-root--statement-collapsed .problem-ide-left .section__tab-header-item::before {
  display: none;
}
.problem-ide-root--statement-collapsed .problem-ide-tab-actions {
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
  padding: 6px 4px;
  border-left: 0;
  border-top: 1px solid #eef0f3;
  overflow-x: hidden;
  min-width: 0;
}
.problem-ide-root--statement-collapsed .problem-ide-tab-actions > #problemIdeStatementExpandBtn {
  margin-left: 0;
}
.problem-ide-root--statement-collapsed .problem-ide-tab-actions > :not(.problem-ide-statement-layout-btn) {
  display: none !important;
}
.problem-ide-root--statement-collapsed .problem-ide-tab-actions .problem-ide-statement-layout-btn {
  width: 100%;
  min-width: 0;
  padding: 0;
  justify-content: center;
}
.theme--dark .problem-ide-root--statement-collapsed .problem-ide-tab-actions {
  border-top-color: #333;
}
.problem-ide-left__scroll::-webkit-scrollbar { width: 6px; }
.problem-ide-left__scroll::-webkit-scrollbar-thumb { background: rgba(0,0,0,.12); border-radius: 3px; }

/* ===================== 拖拽分隔线 ===================== */
/* 宽度须与 page.ts GUTTER_WIDTH 一致；平时透出页面底色，hover/拖动时中间亮出主色条 */
.problem-ide-gutter {
  flex: 0 0 5px;
  background: transparent;
  cursor: col-resize;
  position: relative;
  z-index: 10;
}
.problem-ide-gutter::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 1px;
  width: 3px;
  border-radius: 2px;
  background: transparent;
  transition: background .15s ease;
}
.problem-ide-gutter.dragging::before { transition: none; }
.problem-ide-gutter:hover::before,
.problem-ide-gutter.dragging::before { background: var(--ide-primary); }
/* 左右各外扩 3px 热区 */
.problem-ide-gutter::after {
  content: '';
  position: absolute;
  inset: 0 -3px;
}

/* ===================== 右侧代码区 ===================== */
.problem-ide-right {
  flex: var(--ide-split-right, 1 1 0%);
  min-width: 10%;
  display: flex;
  flex-direction: column;
  background: transparent;
  overflow: hidden;
  padding: 8px 8px 8px 0;
  box-sizing: border-box;
}
.problem-ide-editor-card {
  flex: 1 1 auto;
  min-height: 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: visible;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 10px;
  background: #fff;
}

/* — 顶部工具栏 — */
.problem-ide-toolbar {
  flex-shrink: 0;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 10px;
  box-sizing: border-box;
  height: 42px;
  padding: 0 14px;
  background: #fafbfc;
  border-bottom: 1px solid #e8eaed;
  position: relative;
  /* 高于编辑器区，计时器/设置浮层向下展开时盖住 Monaco */
  z-index: 30;
  min-width: 0;
  border-radius: 9px 9px 0 0;
  /* 勿设 overflow-x: hidden：会使 overflow-y 变为 auto，裁掉绝对定位的计时器/设置浮层 */
  overflow: visible;
}
.problem-ide-toolbar__label {
  color: #666;
  font-size: 12px;
  white-space: nowrap;
}
.problem-ide-select {
  min-width: 100px; max-width: 160px; height: 28px;
  padding: 0 28px 0 10px;
  border-radius: 4px;
  border: 1px solid #d9d9d9;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23999'/%3E%3C/svg%3E") no-repeat right 8px center;
  background-size: 10px 6px;
  color: #333;
  font-size: 13px;
  appearance: none; -webkit-appearance: none;
  cursor: pointer; outline: none;
}
.problem-ide-select:hover { border-color: var(--ide-primary); }
.problem-ide-select:focus { border-color: var(--ide-primary); box-shadow: 0 0 0 2px rgba(var(--ide-primary-rgb), .15); }
.problem-ide-toolbar__spacer { flex: 1; }

/* — 工具栏计时器 — */
.problem-ide-timer {
  position: relative;
  display: flex;
  align-items: center;
  margin-left: 2px;
  padding-left: 10px;
  border-left: 1px solid #e8eaed;
}
.problem-ide-timer__display {
  font-variant-numeric: tabular-nums;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 15px;
  font-weight: 500;
  color: #141414;
  min-width: 5.4em;
  letter-spacing: 0.04em;
}
.problem-ide-timer__display.problem-ide-timer__trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 2px 12px;
  border: 1px solid #d4d8e0;
  border-radius: 8px;
  background: linear-gradient(180deg, #fafbfc 0%, #fafcff 100%);
  cursor: pointer;
  line-height: 1.2;
  box-sizing: border-box;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 1px 2px rgba(0, 0, 0, 0.06);
  -webkit-appearance: none;
  appearance: none;
}
.problem-ide-timer__display.problem-ide-timer__trigger:hover {
  border-color: var(--ide-primary);
  background: linear-gradient(180deg, #ffffff 0%, #f0f7ff 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 1px 3px rgba(var(--ide-primary-rgb),  0.12);
}
.problem-ide-timer__display.problem-ide-timer__trigger:focus-visible {
  outline: 2px solid var(--ide-primary);
  outline-offset: 1px;
}
.problem-ide-timer__display--low {
  color: #d4380d;
}
.problem-ide-timer__display--done {
  color: #cf1322;
}
.problem-ide-timer-panel {
  --timer-accent: var(--ide-primary);
  --timer-accent-soft: rgba(var(--ide-primary-rgb),  0.12);
  --timer-surface: #fff;
  --timer-muted: #8c8c8c;
  --timer-line: rgba(0, 0, 0, 0.06);
  position: absolute;
  left: 0;
  top: calc(100% + 6px);
  min-width: 256px;
  max-width: min(320px, calc(100vw - 24px));
  padding: 0;
  background: var(--timer-surface);
  border: 1px solid #e8eaed;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  z-index: 120;
  color: #262626;
  font-size: 13px;
  isolation: isolate;
  overflow: hidden;
  backdrop-filter: none;
}
.problem-ide-timer-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: #e8eaed;
  pointer-events: none;
}
.problem-ide-timer-panel__shell {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px 14px 14px;
}
.problem-ide-timer-panel__actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.problem-ide-timer-panel__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 28px;
  min-height: 28px;
  padding: 0 12px;
  margin: 0;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 400;
  cursor: pointer;
  border: 1px solid #d9d9d9;
  background: #fff;
  color: #555;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.problem-ide-timer-panel__btn:focus-visible {
  outline: 2px solid var(--timer-accent);
  outline-offset: 1px;
}
.problem-ide-timer-panel__btn--primary {
  background: var(--ide-primary);
  border-color: var(--ide-primary);
  color: #fff;
}
.problem-ide-timer-panel__btn--primary:hover {
  background: var(--ide-primary-hover);
  border-color: var(--ide-primary-hover);
  color: #fff;
}
.problem-ide-timer-panel__btn--ghost:hover {
  border-color: var(--ide-primary);
  color: var(--ide-primary);
}
.problem-ide-timer-panel__btn--accent {
  background: var(--ide-primary);
  border-color: var(--ide-primary);
  color: #fff;
}
.problem-ide-timer-panel__btn--accent:hover {
  background: var(--ide-primary-hover);
  border-color: var(--ide-primary-hover);
  color: #fff;
}
.problem-ide-timer-panel__btn--block {
  width: 100%;
}
.problem-ide-timer-panel__block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.problem-ide-timer-panel__block--timer-mode .problem-ide-timer-panel__block-label {
  color: #5c5c5c;
}
.problem-ide-timer-panel__block-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--timer-muted);
}
.problem-ide-timer-panel__segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 3px;
  gap: 3px;
  border-radius: 6px;
  background: #e8e8e8;
  border: 1px solid #cfcfcf;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    0 1px 2px rgba(0, 0, 0, 0.05);
}
.problem-ide-timer-panel__segment {
  position: relative;
  z-index: 0;
  min-height: 32px;
  padding: 0 10px;
  margin: 0;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: #525252;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease, box-shadow 0.12s ease;
}
.problem-ide-timer-panel__segment:hover {
  color: #262626;
}
.problem-ide-timer-panel__segment--active {
  z-index: 1;
  color: var(--ide-primary);
  background: #fff;
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.08),
    0 0 0 1px rgba(var(--ide-primary-rgb),  0.22);
}
.problem-ide-timer-panel__countdown-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.problem-ide-timer-panel__countdown-section[hidden] {
  display: none !important;
}
.problem-ide-timer-panel__time-grid {
  display: grid;
  grid-template-columns: 1fr min-content 1fr;
  align-items: end;
  gap: 0 10px;
}
.problem-ide-timer-panel__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  cursor: pointer;
}
.problem-ide-timer-panel__cell-cap {
  font-size: 12px;
  font-weight: 500;
  color: #8c8c8c;
}
.problem-ide-timer-panel__time-sep {
  justify-self: center;
  align-self: end;
  margin-bottom: 9px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 1.35rem;
  font-weight: 300;
  line-height: 1;
  color: #d0d0d0;
  user-select: none;
}
.problem-ide-timer-panel__num {
  width: 100%;
  min-width: 0;
  height: 40px;
  padding: 0 8px;
  border: 1px solid #e0e3e8;
  border-radius: 10px;
  background: linear-gradient(180deg, #fafbfc 0%, #fff 100%);
  color: #262626;
  text-align: center;
  font-size: 17px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  box-sizing: border-box;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}
.problem-ide-timer-panel__num:hover {
  border-color: #cfd4dc;
}
.problem-ide-timer-panel__num:focus {
  border-color: var(--timer-accent);
  outline: none;
  box-shadow:
    inset 0 1px 2px rgba(0, 0, 0, 0.04),
    0 0 0 3px var(--timer-accent-soft);
}
.problem-ide-timer-panel__hint {
  margin: 0;
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.5;
  color: #8c8c8c;
  background: rgba(0, 0, 0, 0.025);
  border: 1px solid var(--timer-line);
  border-radius: 8px;
}
.problem-ide-timer-panel__hint strong {
  color: #595959;
  font-weight: 600;
}
@media (prefers-reduced-motion: reduce) {
  .problem-ide-timer-panel__btn,
  .problem-ide-timer-panel__segment,
  .problem-ide-timer-panel__num {
    transition: none;
  }
}

/* 刷题 / 考试模式切换（紧挨计时器，紧凑） */
.problem-ide-exp-mode {
  display: inline-flex;
  align-items: stretch;
  margin: 0;
  border-radius: 4px;
  border: 1px solid var(--ide-toolbar-border, #d4d8e0);
  overflow: hidden;
  flex-shrink: 0;
}
.problem-ide-exp-mode__btn {
  margin: 0;
  padding: 0 5px;
  min-height: 24px;
  font-size: 11px;
  line-height: 1.15;
  border: none;
  background: var(--ide-toolbar-bg, #fafbfc);
  color: var(--ide-toolbar-fg-muted, #595959);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease;
}
.problem-ide-exp-mode__btn:hover {
  background: var(--ide-toolbar-bg-hover, #f0f0f0);
  color: var(--ide-toolbar-fg, #262626);
}
.problem-ide-exp-mode__btn--active {
  background: var(--ide-exp-mode-active-bg, #e6f7ff);
  color: var(--ide-exp-mode-active-fg, var(--ide-primary-active));
  font-weight: 600;
}
.problem-ide-exp-mode__btn + .problem-ide-exp-mode__btn {
  border-left: 1px solid var(--ide-toolbar-border, #d9d9d9);
}
.theme--dark .problem-ide-exp-mode {
  border-color: #434343;
}
.theme--dark .problem-ide-exp-mode__btn {
  background: #1f1f1f;
  color: #bfbfbf;
}
.theme--dark .problem-ide-exp-mode__btn:hover {
  background: #262626;
  color: #f0f0f0;
}
.theme--dark .problem-ide-exp-mode__btn--active {
  background: #111d2c;
  color: var(--ide-primary-text);
}

/* 考试/作业：锁定考试模式，隐藏练习计时器与模式切换 */
.problem-ide-root--contest .problem-ide-timer,
.problem-ide-root--contest .problem-ide-exp-mode {
  display: none !important;
}

/* 考试倒计时胶囊与进度条见 src/frontend/contestCountdown.css */
/* 模式标签 */
.problem-ide-mode-tag {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .3px;
  white-space: nowrap;
  line-height: 22px;
  user-select: none;
}
.problem-ide-mode-tag--acm {
  background: #e6f7ff;
  color: var(--ide-primary);
  border: 1px solid #91d5ff;
}
.problem-ide-mode-tag--core {
  background: #f6ffed;
  color: #52c41a;
  border: 1px solid #b7eb8f;
}
.theme--dark .problem-ide-mode-tag--acm {
  background: #111d2c;
  color: #3c9ae8;
  border-color: #15395b;
}
.theme--dark .problem-ide-mode-tag--core {
  background: #162312;
  color: #6abe39;
  border-color: #274916;
}
.problem-ide-mode-tag--spj {
  background: #fff7e6;
  color: #d46b08;
  border: 1px solid #ffd591;
}
.theme--dark .problem-ide-mode-tag--spj {
  background: #2b1d11;
  color: #d89614;
  border-color: #593815;
}

/* Special Judge 自测提示 */
.pretest-spj-notice {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 6px;
  background: #fffbe6;
  border: 1px solid #ffe58f;
  font-size: 13px;
  line-height: 1.5;
  color: #614700;
}
.pretest-spj-notice strong {
  font-size: 13px;
}
.pretest-spj-notice span {
  color: #8c6e00;
}
.theme--dark .pretest-spj-notice {
  background: #2b2111;
  border-color: #594214;
  color: #d8bd14;
}
.theme--dark .pretest-spj-notice span {
  color: #bfa730;
}

.problem-ide-acm-autofill {
  position: relative;
  display: inline-flex;
  flex: 0 0 auto;
  margin: 0;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  user-select: none;
}
.problem-ide-acm-autofill[hidden] {
  display: none !important;
}
.problem-ide-acm-autofill__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}
.problem-ide-acm-autofill__chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid #e0e0e0;
  background: #fff;
  color: #8c8c8c;
  font-size: 12px;
  font-weight: 400;
  line-height: 28px;
  white-space: nowrap;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
/* 状态点：关闭灰点 / 开启蓝点，配合蓝底蓝边让开关状态一眼可辨 */
.problem-ide-acm-autofill__chip::before {
  content: '';
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: #d9d9d9;
  transition: background 0.15s ease;
}
.problem-ide-acm-autofill:hover .problem-ide-acm-autofill__chip {
  border-color: #d0d0d0;
  color: #555;
}
.problem-ide-acm-autofill__input:checked + .problem-ide-acm-autofill__chip {
  border-color: var(--ide-primary);
  background: rgba(var(--ide-primary-rgb), 0.08);
  color: var(--ide-primary-active);
  font-weight: 500;
}
.problem-ide-acm-autofill__input:checked + .problem-ide-acm-autofill__chip::before {
  background: var(--ide-primary);
}
.problem-ide-acm-autofill:hover .problem-ide-acm-autofill__input:checked + .problem-ide-acm-autofill__chip {
  border-color: var(--ide-primary-hover);
  background: rgba(var(--ide-primary-rgb), 0.14);
  color: var(--ide-primary-active);
}
.problem-ide-acm-autofill__input:focus-visible + .problem-ide-acm-autofill__chip {
  outline: 2px solid rgba(var(--ide-primary-rgb),  0.28);
  outline-offset: 1px;
}
.theme--dark .problem-ide-acm-autofill__chip {
  border-color: #434343;
  background: #1f1f1f;
  color: #8c8c8c;
}
.theme--dark .problem-ide-acm-autofill__chip::before {
  background: #595959;
}
.theme--dark .problem-ide-acm-autofill:hover .problem-ide-acm-autofill__chip {
  border-color: #595959;
  color: #ccc;
}
.theme--dark .problem-ide-acm-autofill__input:checked + .problem-ide-acm-autofill__chip {
  border-color: var(--ide-primary);
  background: rgba(var(--ide-primary-rgb), 0.18);
  color: var(--ide-primary-text);
  font-weight: 500;
}
.theme--dark .problem-ide-acm-autofill__input:checked + .problem-ide-acm-autofill__chip::before {
  background: var(--ide-primary-hover);
}
.theme--dark .problem-ide-acm-autofill:hover .problem-ide-acm-autofill__input:checked + .problem-ide-acm-autofill__chip {
  border-color: var(--ide-primary-hover);
  background: rgba(var(--ide-primary-rgb), 0.26);
  color: var(--ide-primary-text);
}

.problem-ide-settings__hint {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  line-height: 1.4;
  color: #8c8c8c;
  max-width: 220px;
}
#problemIdeAcmAutofillSettings:not([hidden]) {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.problem-ide-toolbar__btn {
  height: 28px; padding: 0 12px;
  border-radius: 4px;
  border: 1px solid #d9d9d9;
  background: #fff; color: #555;
  font-size: 12px; cursor: pointer;
  transition: all .15s;
}
.problem-ide-toolbar__btn:hover { border-color: var(--ide-primary); color: var(--ide-primary); }
.problem-ide-toolbar__btn--icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  padding: 0;
  flex-shrink: 0;
}
.problem-ide-toolbar__btn--icon svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* — 设置面板 — */
.problem-ide-settings {
  position: absolute;
  right: 14px;
  top: calc(100% + 4px);
  padding: 14px 16px;
  background: #fff;
  border: 1px solid #e8eaed;
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0,0,0,.12);
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: #333;
  font-size: 13px;
  z-index: 100;
}
.problem-ide-settings--hidden { display: none !important; }
.problem-ide-settings label {
  display: flex; align-items: center; gap: 8px; cursor: pointer;
}
.problem-ide-settings input[type='number'] {
  width: 56px; height: 26px; padding: 0 6px;
  border: 1px solid #d9d9d9; border-radius: 4px;
  background: #fff; color: #333; text-align: center;
}
.problem-ide-settings__select {
  height: 26px; padding: 0 24px 0 8px;
  border: 1px solid #d9d9d9; border-radius: 4px;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23999'/%3E%3C/svg%3E") no-repeat right 6px center;
  background-size: 10px 6px;
  color: #333; font-size: 12px;
  appearance: none; -webkit-appearance: none;
  cursor: pointer; outline: none;
  max-width: 90px;
}
.problem-ide-settings__select:hover { border-color: var(--ide-primary); }
.problem-ide-settings__select:focus { border-color: var(--ide-primary); box-shadow: 0 0 0 2px rgba(var(--ide-primary-rgb), .15); }

/* — 编辑器区域 — */
.problem-ide-editor-wrap {
  flex: 1 1 auto;
  min-height: 120px;
  position: relative;
  overflow: hidden;
  border-radius: 0 0 9px 9px;
}
.problem-ide-monaco { position: absolute; inset: 0; overflow: hidden; }
/*
 * Monaco 补全/hover 关窗后，.overflowingContentWidgets 仍可能挡住工具栏和抽屉按钮。
 * 容器不接事件；仅可见子浮层接事件。
 */
.problem-ide-monaco .overflowingContentWidgets {
  pointer-events: none;
}
.problem-ide-monaco .overflowingContentWidgets > * {
  pointer-events: auto;
}
.problem-ide-monaco .overflowingContentWidgets > .invisible,
.problem-ide-monaco .suggest-widget:not(.visible),
.problem-ide-monaco .parameter-hints-widget:not(.visible),
.problem-ide-monaco .monaco-hover:not(.visible) {
  pointer-events: none !important;
}

/* ===================== 底部抽屉 ===================== */
.problem-ide-drawer {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 10px;
  overflow: hidden;
  background: #fafbfc;
  height: var(--ide-drawer-h, 220px);
  min-height: 80px;
  max-height: 60%;
  min-width: 0;
  box-sizing: border-box;
  transition: height .2s ease;
}
.problem-ide-drawer--collapsed {
  height: 40px !important;
  min-height: 40px !important;
  overflow: hidden;
}
.problem-ide-drawer--collapsed .problem-ide-drawer__body { display: none; }
.problem-ide-right:has(.problem-ide-drawer--collapsed) .problem-ide-drawer__resize {
  visibility: hidden;
  pointer-events: none;
}
.problem-ide-drawer--collapsed .problem-ide-drawer__chevron { transform: rotate(180deg); }
.problem-ide-drawer--resizing { transition: none !important; }

/* 操作栏 */
.problem-ide-drawer__bar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  height: 38px;
  padding: 0 14px;
  background: #fafbfc;
  border-bottom: 1px solid #e8eaed;
  gap: 6px;
}
.problem-ide-drawer__toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  white-space: nowrap;
  background: none;
  border: none;
  color: #666;
  font-size: 12px;
  cursor: pointer;
  padding: 4px 0;
}
.problem-ide-drawer__toggle:hover { color: var(--ide-primary); }
.problem-ide-drawer__chevron {
  display: inline-block;
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform .2s ease;
}
.problem-ide-drawer__bar-spacer { flex: 1; }

/* 运行 / 提交：自测为次要按钮，提交为唯一主按钮；图标用 mask，文案由 page.ts 改 textContent 不会冲掉 */
.problem-ide-btn {
  height: 30px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease, box-shadow .15s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  white-space: nowrap;
}
.problem-ide-btn::before {
  content: '';
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  background: currentColor;
  -webkit-mask: var(--ide-btn-icon) center / 14px 14px no-repeat;
  mask: var(--ide-btn-icon) center / 14px 14px no-repeat;
}
.problem-ide-btn:disabled { opacity: .5; cursor: not-allowed; }
.problem-ide-btn--loading:disabled { opacity: .8; cursor: progress; }
.problem-ide-btn--loading::before {
  box-sizing: border-box;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  background: none;
  -webkit-mask: none;
  mask: none;
  animation: problem-ide-page-spin 0.7s linear infinite;
}
.problem-ide-btn--run {
  --ide-btn-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M7 4.5v15a1 1 0 0 0 1.5.86l12.5-7.5a1 1 0 0 0 0-1.72L8.5 3.64A1 1 0 0 0 7 4.5z'/%3E%3C/svg%3E");
  background: rgba(15, 23, 42, 0.05);
  border-color: rgba(15, 23, 42, 0.1);
  color: #27272a;
}
.problem-ide-btn--run:not(:disabled):hover { background: rgba(15, 23, 42, 0.08); border-color: rgba(15, 23, 42, 0.16); }
.problem-ide-btn--run:not(:disabled):active { background: rgba(15, 23, 42, 0.12); }
.problem-ide-btn--submit {
  --ide-btn-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 13v8'/%3E%3Cpath d='m8 17 4-4 4 4'/%3E%3Cpath d='M4 14.9A7 7 0 1 1 15.7 8h1.8a4.5 4.5 0 0 1 2.5 8.24'/%3E%3C/svg%3E");
  background: var(--ide-success);
  color: #fff;
  box-shadow: 0 1px 2px rgba(22, 163, 74, 0.28);
}
.problem-ide-btn--submit:not(:disabled):hover { background: var(--ide-success-hover); }
.problem-ide-btn--submit:not(:disabled):active { background: var(--ide-success-active); }
.problem-ide-btn:focus-visible { outline: 2px solid var(--ide-primary); outline-offset: 2px; }
.theme--dark .problem-ide-btn--run {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.12);
  color: #e4e4e7;
}
.theme--dark .problem-ide-btn--run:not(:disabled):hover { background: rgba(255, 255, 255, 0.11); border-color: rgba(255, 255, 255, 0.18); }
.theme--dark .problem-ide-btn--run:not(:disabled):active { background: rgba(255, 255, 255, 0.15); }

/* 非会员：冷却期内点击运行/提交时的顶部横幅提示 */
.problem-ide-cooldown-toast {
  position: fixed;
  top: 70px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100001;
  box-sizing: border-box;
  max-width: min(560px, calc(100vw - 32px));
  padding: 7px 24px;
  border-radius: 9999px;
  font-size: 13px;
  line-height: 1.35;
  font-weight: 500;
  text-align: center;
  color: #0f172a;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(241, 245, 249, 0.98));
  border: 1px solid rgba(var(--ide-primary-rgb),  0.22);
  box-shadow:
    0 0 0 1px rgba(var(--ide-primary-rgb),  0.08),
    0 12px 40px rgba(15, 23, 42, 0.14);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.35s ease;
}
.problem-ide-cooldown-toast__text {
  display: block;
}
.problem-ide-cooldown-toast__link {
  color: #fda922 !important;
  font-weight: 600;
  text-decoration: none;
}
.problem-ide-cooldown-toast__link:hover {
  text-decoration: underline;
}
.problem-ide-cooldown-toast--visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.problem-ide-cooldown-toast--visible.problem-ide-cooldown-toast--hiding {
  opacity: 0;
  pointer-events: none;
}
/* 未购题库等较长说明：多行横幅 */
.problem-ide-cooldown-toast--multiline {
  border-radius: 12px;
  max-width: min(720px, calc(100vw - 32px));
  padding: 12px 20px;
  text-align: left;
}
.problem-ide-cooldown-toast--multiline .problem-ide-cooldown-toast__text {
  line-height: 1.55;
}
.theme--dark .problem-ide-cooldown-toast {
  color: #e2e8f0;
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.96), rgba(15, 23, 42, 0.96));
  border-color: rgba(56, 189, 248, 0.28);
  box-shadow:
    0 0 0 1px rgba(56, 189, 248, 0.1),
    0 14px 44px rgba(0, 0, 0, 0.45);
}
.theme--dark .problem-ide-cooldown-toast__link {
  color: #38bdf8;
}

/* 抽屉主体 */
.problem-ide-drawer__body {
  flex: 1; min-height: 0;
  display: flex; flex-direction: column;
  background: #fff;
  overflow: hidden;
}

/* Tab 栏 */
.problem-ide-tabs {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 5px;
  min-width: 0;
  padding: 0 8px;
  overflow-x: auto;
  overflow-y: hidden;
  background: #fafbfc;
  border-bottom: 1px solid #e8eaed;
}
/* 胶囊 / 分隔线 / 选中态见文件顶部「题面 Tab 与控制台 Tab 共用」 */
.problem-ide-tab {
  flex-shrink: 0;
  white-space: nowrap;
  cursor: pointer;
  font-size: 13px;
  line-height: 1.4;
}

/* 面板 */
.problem-ide-panel {
  flex: 1; min-height: 0; overflow: auto;
  padding: 12px 14px;
}
.problem-ide-label {
  display: block; font-size: 11px;
  color: #888; margin-bottom: 4px;
  text-transform: uppercase; letter-spacing: .5px;
}
.problem-ide-label--mt { margin-top: 8px; }

/* 确保 hidden 属性优先于自定义 display */
.problem-ide-panel[hidden] { display: none !important; }

/* 自测面板布局 */
.problem-ide-panel--run {
  display: flex;
  flex-direction: column;
}
.problem-ide-panel--run .problem-ide-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.problem-ide-cases-bar {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 4px;
  margin-bottom: 8px;
  flex-shrink: 0;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
}
.problem-ide-cases-tabs {
  display: flex;
  gap: 4px;
  flex-wrap: nowrap;
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
}
.problem-ide-cases-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.problem-ide-case-fill {
  padding: 3px 10px;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
  background: #fafafa;
  color: #666;
  font-size: 12px;
  line-height: 1.3;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.problem-ide-case-fill:hover {
  border-color: var(--ide-primary);
  color: var(--ide-primary);
}
.problem-ide-case-tab {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px 10px;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
  background: #fafafa;
  color: #666;
  font-size: 12px;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.problem-ide-case-tab:hover { border-color: var(--ide-primary); color: var(--ide-primary); }
.problem-ide-case-tab--active {
  background: #e6f7ff;
  border-color: var(--ide-primary);
  color: var(--ide-primary);
  font-weight: 500;
}
.problem-ide-case-tab__spin {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  animation: problem-ide-case-spin 0.7s linear infinite;
}
@keyframes problem-ide-case-spin {
  to { transform: rotate(360deg); }
}
.problem-ide-textarea--flash {
  animation: problem-ide-case-flash 0.85s ease;
}
@keyframes problem-ide-case-flash {
  0% { box-shadow: inset 0 0 0 999px rgba(37, 99, 235, 0.1), inset 0 0 0 1px rgba(37, 99, 235, 0.45); }
  100% { box-shadow: inset 0 0 0 999px transparent, inset 0 0 0 1px transparent; }
}
.problem-ide-case-del {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px; height: 14px;
  margin-left: 2px;
  border-radius: 50%;
  font-size: 12px; line-height: 1;
  color: #999;
  transition: all .15s;
}
.problem-ide-case-del:hover { background: #ff4d4f; color: #fff; }
.problem-ide-case-add {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px; height: 24px;
  border: 1px dashed #d9d9d9;
  border-radius: 4px;
  background: transparent;
  color: #999;
  font-size: 16px;
  cursor: pointer;
  transition: all .15s;
  flex-shrink: 0;
}
.problem-ide-case-add:hover { border-color: var(--ide-primary); color: var(--ide-primary); }
.problem-ide-run-cols {
  display: flex;
  gap: 10px;
  flex: 1;
  min-height: 0;
}
.problem-ide-run-col {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.problem-ide-textarea--fill {
  flex: 1;
  min-height: 40px;
  resize: none;
}

/* 多用例运行结果 */
.pretest-multi-results {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.pretest-case-result {
  border: 1px solid #e8eaed;
  border-radius: 6px;
  overflow: hidden;
}
.pretest-case-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: #fafbfc;
  border-bottom: 1px solid #e8eaed;
}
.pretest-case-title {
  font-size: 13px;
  font-weight: 500;
  color: #333;
}
.pretest-case-body {
  padding: 8px 12px;
}
.problem-ide-textarea {
  width: 100%; box-sizing: border-box;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px; line-height: 1.5;
  padding: 8px 10px; border-radius: 4px;
  border: 1px solid #d9d9d9;
  background: #fff; color: #333;
  resize: vertical; outline: none;
  transition: border-color .15s;
}
.problem-ide-textarea:focus { border-color: var(--ide-primary); }
.problem-ide-output {
  min-height: 48px;
  overflow: auto; padding: 8px 10px; margin: 0;
  border-radius: 4px;
  border: 1px solid #d9d9d9;
  background: #fafafa;
  color: #222;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px; line-height: 1.5;
  white-space: pre-wrap; word-break: break-word;
}
.problem-ide-output:empty::before { content: '暂无输出'; color: #bbb; }

.problem-ide-status-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 8px 0 4px;
}
.problem-ide-status-row .problem-ide-status {
  padding: 0;
}
.history-ai-btn.problem-ide-submit-result-ai-btn {
  flex-shrink: 0;
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1d4ed8;
}
.history-ai-btn.problem-ide-submit-result-ai-btn:hover {
  background: #dbeafe;
  border-color: #93c5fd;
  color: #1e40af;
}
.theme--dark .history-ai-btn.problem-ide-submit-result-ai-btn {
  background: rgba(59, 130, 246, 0.16);
  border-color: rgba(96, 165, 250, 0.45);
  color: #bfdbfe;
}
.theme--dark .history-ai-btn.problem-ide-submit-result-ai-btn:hover {
  background: rgba(59, 130, 246, 0.26);
  border-color: rgba(147, 197, 253, 0.65);
  color: #eff6ff;
}
/* .history-ai-btn 显式设置了 display，会盖过 [hidden] 的 UA 规则，导致按钮「一直显示」 */
.problem-ide-submit-result-ai-btn[hidden] {
  display: none !important;
}
.problem-ide-status { font-size: 13px; font-weight: 700; }
.problem-ide-status--ok { color: #52c41a; }
.problem-ide-status--err { color: #f5222d; }
.problem-ide-status--pending { color: #faad14; }
.problem-ide-pass-rate {
  font-size: 13px;
  font-weight: 700;
}
.problem-ide-pass-rate--ok { color: #52c41a; }
.problem-ide-pass-rate--err { color: #f5222d; }
.problem-ide-pass-rate--pending { color: #faad14; }

/* ===================== 抽屉拖拽手柄 ===================== */
.problem-ide-drawer__resize {
  flex-shrink: 0;
  height: 10px;
  margin: 0;
  cursor: row-resize;
  background: transparent;
  position: relative;
  z-index: 2;
}
.problem-ide-drawer__resize::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 3px;
  margin-top: -1.5px;
  border-radius: 2px;
  background: transparent;
  transition: background .15s ease;
}
.problem-ide-drawer__resize:hover::before,
.problem-ide-drawer__resize.dragging::before { background: var(--ide-primary); }

/* ===================== 提交结果详情 ===================== */
.result-detail { white-space: normal; }
.result-summary {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 10px; flex-wrap: wrap;
}
.result-badge {
  display: inline-block; padding: 2px 10px;
  border-radius: 4px; font-weight: 600; font-size: 13px;
}
.result-badge--ac { background: #f6ffed; color: #52c41a; border: 1px solid #b7eb8f; }
.result-badge--err { background: #fff2f0; color: #f5222d; border: 1px solid #ffa39e; }
.result-meta { color: #666; font-size: 12px; }
.result-compiler {
  margin: 8px 0; padding: 8px 10px;
  background: #fff7e6; border: 1px solid #ffe58f; border-radius: 4px;
}
.result-compiler pre {
  margin: 0; white-space: pre-wrap; word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px; color: #333;
}
.ide-compile-jump {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  line-height: inherit;
  text-align: left;
  white-space: pre-wrap;
  word-break: break-word;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.ide-compile-jump:hover {
  background: rgba(239, 68, 68, 0.08);
}
.monaco-editor .ide-compile-line {
  background: rgba(239, 68, 68, 0.14);
}
.theme--dark .monaco-editor .ide-compile-line {
  background: rgba(248, 113, 113, 0.18);
}
.result-cases {
  width: 100%; border-collapse: collapse;
  font-size: 12px; margin-top: 8px;
}
.result-cases th, .result-cases td {
  padding: 6px 10px; text-align: left;
  border-bottom: 1px solid #f0f0f0;
}
.result-cases th { background: #fafafa; color: #888; font-weight: 500; }
.result-ac { color: #52c41a; font-weight: 500; }
.result-err { color: #f5222d; font-weight: 500; }
.result-case-preview-btn {
  appearance: none;
  border: 1px solid #d9d9d9;
  background: #fff;
  color: var(--ide-primary);
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 4px;
  cursor: pointer;
}
.result-case-preview-btn:hover {
  border-color: var(--ide-primary);
  background: #e6f7ff;
}

/* 自测对比 */
.pretest-compare {
  display: flex; gap: 12px;
}
.pretest-section {
  flex: 1; min-width: 0;
}
.pretest-section__label {
  font-size: 11px; color: #888; margin-bottom: 4px;
  text-transform: uppercase; letter-spacing: .5px;
}
.pretest-pre {
  margin: 0; padding: 8px 10px; border-radius: 4px;
  border: 1px solid #d9d9d9; background: #fafafa;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px; line-height: 1.5;
  white-space: pre-wrap; word-break: break-word;
  min-height: 36px; max-height: 160px; overflow: auto;
}

/* —— 自测多用例：Case 标签（力扣式，一次看一个用例） —— */
.pretest-case-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}
.pretest-case-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 7px;
  background: rgba(15, 23, 42, 0.04);
  color: #52525b;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.pretest-case-tab:hover { background: rgba(15, 23, 42, 0.07); color: #09090b; }
.pretest-case-tab--active {
  background: #fff;
  border-color: rgba(15, 23, 42, 0.12);
  color: #09090b;
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}
.pretest-case-tab:focus-visible { outline: 2px solid var(--ide-primary); outline-offset: 1px; }
.pretest-case-tab__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex: 0 0 7px;
}
.pretest-case-tab__dot--ok { background: var(--ide-success); }
.pretest-case-tab__dot--err { background: var(--ide-danger); }
.pretest-case-tab__dot--pending {
  background: #d4d4d8;
  animation: pretest-dot-pulse 1.2s ease-in-out infinite;
}
@keyframes pretest-dot-pulse {
  50% { opacity: .35; }
}
@media (prefers-reduced-motion: reduce) {
  .pretest-case-tab__dot--pending { animation: none; }
}
.pretest-case-result[hidden] { display: none !important; }
/* 已有 Case 标签时卡片标题重复，隐藏 */
.problem-ide-output--case-tabs .pretest-case-title { display: none; }

.pretest-section--input { margin-bottom: 10px; }

/* —— 实际 / 预期逐行对比 —— */
.pretest-pre--lines { padding-left: 0; padding-right: 0; }
.pretest-line {
  display: block;
  min-height: 1.5em;
  padding: 0 10px;
  border-left: 2px solid transparent;
}
.pretest-line--diff {
  background: rgba(239, 68, 68, 0.1);
  border-left-color: var(--ide-danger);
}
.pretest-diff-hint {
  margin-bottom: 8px;
  padding: 6px 10px;
  border-radius: 6px;
  background: rgba(239, 68, 68, 0.06);
  color: #b91c1c;
  font-size: 12px;
}
.theme--dark .pretest-case-tab { background: rgba(255, 255, 255, 0.05); color: #a1a1aa; }
.theme--dark .pretest-case-tab:hover { background: rgba(255, 255, 255, 0.09); color: #fafafa; }
.theme--dark .pretest-case-tab--active {
  background: #2a2a2d;
  border-color: rgba(255, 255, 255, 0.14);
  color: #fafafa;
  box-shadow: none;
}
.theme--dark .pretest-case-tab__dot--pending { background: #52525b; }
.theme--dark .pretest-line--diff { background: rgba(248, 113, 113, 0.14); border-left-color: #f87171; }
.theme--dark .pretest-diff-hint { background: rgba(248, 113, 113, 0.1); color: #fca5a5; }

.pretest-case-meta {
  margin-left: auto;
  font-size: 11px;
  color: #999;
  white-space: nowrap;
}
.pretest-error-hint {
  margin-bottom: 8px;
  padding: 6px 10px;
  border-radius: 4px;
  background: #fff2f0;
  border: 1px solid #ffccc7;
  color: #cf1322;
  font-size: 12px;
  line-height: 1.5;
}
.pretest-error-block {
  margin-bottom: 8px;
  padding: 8px 10px;
  border-radius: 4px;
  background: #fff7e6;
  border: 1px solid #ffe58f;
}
.pretest-error-block--stderr {
  background: #fff2f0;
  border-color: #ffccc7;
}
.pretest-error-block__label {
  font-size: 11px;
  color: #d48806;
  font-weight: 500;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.pretest-error-block--stderr .pretest-error-block__label {
  color: #cf1322;
}
.pretest-error-block__pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  line-height: 1.5;
  color: #333;
  max-height: 200px;
  overflow: auto;
}
.pretest-error-block__pre.ide-compile-pre {
  background: none;
  border: none;
}

/* ===================== 历史提交 ===================== */
.problem-ide-panel[data-panel="history"] { padding: 0; }
.problem-ide-history { min-height: 60px; }
.history-loading, .history-empty {
  padding: 20px; text-align: center; color: #999; font-size: 13px;
}
.history-table {
  width: 100%; border-collapse: collapse; font-size: 12px;
}
.history-table th, .history-table td {
  padding: 8px 10px; text-align: left;
  border-bottom: 1px solid #f0f0f0;
}
.history-table th {
  background: #fafafa; color: #888; font-weight: 500;
  position: sticky; top: 0; z-index: 1;
}
.history-row:hover { background: #f5f5f5; cursor: pointer; }
.history-hint {
  padding: 8px 14px;
  background: #e6f7ff;
  border-bottom: 1px solid #91d5ff;
  color: var(--ide-primary);
  font-size: 12px;
  line-height: 1.5;
}
.history-footer {
  padding: 8px 10px 10px;
  text-align: center;
  font-size: 12px;
  color: #999;
  border-top: 1px solid #f0f0f0;
}
.history-load-more { color: var(--ide-primary); }
.history-end { color: #bbb; }

/* 左侧题面区「提交详情」Tab（由历史提交点开） */
.problem-ide-left__scroll--submit-detail .section__body.show-hide-box-parent > :not(#content-submitDetail) {
  display: none !important;
}
.problem-ide-left__scroll--submit-detail #content-submitDetail.problem_content {
  display: block !important;
}
.problem-ide-submit-detail {
  padding: 8px 4px 16px;
  font-size: 13px;
  line-height: 1.55;
}
.problem-ide-submit-detail .problem-ide-ai-panel__meta {
  margin-bottom: 12px;
}
.problem-ide-submit-detail__code {
  margin-top: 16px;
}
.problem-ide-submit-detail__code .problem-ide-label {
  margin-bottom: 6px;
}
/* 代码区与 AI 分析一致：由 record-ai-stream-md + record-ai-code-block 样式与高亮负责 */
.problem-ide-submit-detail__code-md {
  margin-top: 2px;
}
.problem-ide-submit-detail__code-lock {
  margin: 0 0 10px;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: #4b5563;
  background: linear-gradient(180deg, rgba(245, 246, 248, 0.88), rgba(225, 228, 232, 0.94));
  border: 1px solid rgba(31, 35, 40, 0.08);
}
.problem-ide-submit-detail__code-lock a {
  color: var(--ide-primary);
  font-weight: 500;
  text-decoration: none;
  margin: 0 2px;
}
.problem-ide-submit-detail__code-lock a:hover {
  text-decoration: underline;
}
.theme--dark .problem-ide-submit-detail__code-lock {
  color: #d6d6d6;
  background: linear-gradient(180deg, rgba(30, 30, 32, 0.72), rgba(20, 20, 22, 0.92));
  border-color: rgba(255, 255, 255, 0.08);
}

/* ===================== 暗色模式 (.theme--dark) ===================== */
.theme--dark .problem-ide-root { background: #111; }
.theme--dark .problem-ide-left { background: transparent !important; color: #ddd; }
.theme--dark .problem-ide-left__main {
  background: #1a1a1a;
  border-color: #333;
}
.theme--dark .problem-ide-left__scroll::-webkit-scrollbar-thumb { background: rgba(255,255,255,.15); }
.theme--dark .problem-ide-toolbar { background: #252526; border-bottom-color: #3c3c3c; }
.theme--dark .problem-ide-toolbar__label { color: #999; }
.theme--dark .problem-ide-select {
  background-color: #333; border-color: #505050; color: #e0e0e0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23888'/%3E%3C/svg%3E");
}
.theme--dark .problem-ide-toolbar__btn { background: #333; border-color: #505050; color: #ccc; }
.theme--dark .problem-ide-toolbar__btn:hover { border-color: var(--ide-primary); color: #fff; }

.theme--dark .problem-ide-timer { border-left-color: #3c3c3c; }
.theme--dark .problem-ide-timer__display {
  color: #f0f0f0;
  font-size: 15px;
  font-weight: 700;
}
.theme--dark .problem-ide-timer__display.problem-ide-timer__trigger {
  border-color: #5a5a5a;
  background: linear-gradient(180deg, #3a3a3c 0%, #2d2d30 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 1px 2px rgba(0, 0, 0, 0.35);
}
.theme--dark .problem-ide-timer__display.problem-ide-timer__trigger:hover {
  border-color: var(--ide-primary);
  background: linear-gradient(180deg, #3d4248 0%, #2f343a 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 1px 3px rgba(var(--ide-primary-rgb),  0.2);
}
.theme--dark .problem-ide-timer__display--low { color: #e89a3c; }
.theme--dark .problem-ide-timer__display--done { color: #ff6b6b; }
.theme--dark .problem-ide-timer-panel {
  --timer-surface: #2d2d2d;
  --timer-muted: #9a9a9a;
  --timer-line: rgba(255, 255, 255, 0.08);
  background: var(--timer-surface);
  border-color: #444;
  color: #e8e8e8;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.45);
}
.theme--dark .problem-ide-timer-panel::before {
  background: #444;
}
.theme--dark .problem-ide-timer-panel__block-label {
  color: #888;
}
.theme--dark .problem-ide-timer-panel__block--timer-mode .problem-ide-timer-panel__block-label {
  color: #c6c6c6;
}
.theme--dark .problem-ide-timer-panel__segmented {
  background: #1a1a1b;
  border-color: #4a4a4a;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 1px 2px rgba(0, 0, 0, 0.25);
}
.theme--dark .problem-ide-timer-panel__segment {
  color: #b8b8b8;
}
.theme--dark .problem-ide-timer-panel__segment:hover {
  color: #f0f0f0;
}
.theme--dark .problem-ide-timer-panel__segment--active {
  color: #69c0ff;
  background: #2d2d30;
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.35),
    0 0 0 1px rgba(105, 192, 255, 0.28);
}
.theme--dark .problem-ide-timer-panel__btn {
  background: #333;
  border-color: #505050;
  color: #ccc;
}
.theme--dark .problem-ide-timer-panel__btn:hover {
  border-color: var(--ide-primary);
  color: #fff;
}
.theme--dark .problem-ide-timer-panel__btn--primary,
.theme--dark .problem-ide-timer-panel__btn--accent {
  background: var(--ide-primary);
  border-color: var(--ide-primary);
  color: #fff;
}
.theme--dark .problem-ide-timer-panel__btn--primary:hover,
.theme--dark .problem-ide-timer-panel__btn--accent:hover {
  background: var(--ide-primary-hover);
  border-color: var(--ide-primary-hover);
  color: #fff;
}
.theme--dark .problem-ide-timer-panel__btn--ghost:hover {
  color: #fff;
}
.theme--dark .problem-ide-timer-panel__cell-cap {
  color: #888;
}
.theme--dark .problem-ide-timer-panel__time-sep {
  color: #555;
}
.theme--dark .problem-ide-timer-panel__num {
  background: linear-gradient(180deg, #222 0%, #2a2a2a 100%);
  border-color: #444;
  color: #f0f0f0;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.25);
}
.theme--dark .problem-ide-timer-panel__num:hover {
  border-color: #555;
}
.theme--dark .problem-ide-timer-panel__hint {
  color: #9a9a9a;
  background: rgba(0, 0, 0, 0.2);
  border-color: rgba(255, 255, 255, 0.06);
}
.theme--dark .problem-ide-timer-panel__hint strong {
  color: #ccc;
}

.theme--dark .problem-ide-settings {
  background: #2d2d2d; border-color: #444; color: #ddd;
  box-shadow: 0 6px 20px rgba(0,0,0,.45);
}
.theme--dark .problem-ide-settings input[type='number'] {
  background: #1e1e1e; border-color: #555; color: #eee;
}
.theme--dark .problem-ide-settings__select {
  background-color: #1e1e1e; border-color: #555; color: #eee;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23888'/%3E%3C/svg%3E");
}

.theme--dark .problem-ide-editor-card { background: #1e1e1e; border-color: #3c3c3c; }
.theme--dark .problem-ide-drawer { border-color: #3c3c3c; background: #252526; }
.theme--dark .problem-ide-drawer__bar { background: #252526; border-bottom-color: #3c3c3c; }
.theme--dark .problem-ide-drawer__toggle { color: #aaa; }
.theme--dark .problem-ide-drawer__toggle:hover { color: #fff; }
.theme--dark .problem-ide-drawer__body { background: #1e1e1e; }
.theme--dark .problem-ide-tabs { background: #252526; border-bottom-color: #3c3c3c; }
.theme--dark .problem-ide-panel { color: #ddd; }
.theme--dark .problem-ide-label { color: #888; }
.theme--dark .problem-ide-textarea {
  background: #141414; border-color: #3c3c3c; color: #e0e0e0;
}
.theme--dark .problem-ide-output {
  background: #141414; border-color: #3c3c3c; color: #b5e853;
}
.theme--dark .problem-ide-output:empty::before { color: #555; }
.theme--dark .problem-ide-drawer__resize:hover::before,
.theme--dark .problem-ide-drawer__resize.dragging::before { background: var(--ide-primary-hover); }
.theme--dark .result-badge--ac { background: #162312; color: #52c41a; border-color: #274916; }
.theme--dark .result-badge--err { background: #2a1215; color: #f5222d; border-color: #431418; }
.theme--dark .result-meta { color: #999; }
.theme--dark .result-compiler { background: #2b2111; border-color: #594214; }
.theme--dark .result-compiler pre { color: #ddd; }
.theme--dark .result-cases th { background: #1a1a1a; }
.theme--dark .result-cases td { border-bottom-color: #333; }
.theme--dark .result-case-preview-btn {
  background: #21262d;
  border-color: #30363d;
  color: var(--ide-primary-text);
}
.theme--dark .result-case-preview-btn:hover {
  border-color: var(--ide-primary-text);
  background: #0c1929;
}
.theme--dark .pretest-section__label { color: #888; }
.theme--dark .pretest-pre { background: #141414; border-color: #3c3c3c; color: #e0e0e0; }
.theme--dark .problem-ide-case-tab { background: #2d2d2d; border-color: #444; color: #aaa; }
.theme--dark .problem-ide-case-tab:hover { border-color: var(--ide-primary); color: var(--ide-primary-text); }
.theme--dark .problem-ide-case-tab--active { background: #111d2c; border-color: var(--ide-primary); color: var(--ide-primary-text); }
.theme--dark .problem-ide-case-del { color: #666; }
.theme--dark .problem-ide-case-del:hover { background: #ff4d4f; color: #fff; }
.theme--dark .problem-ide-case-add { border-color: #444; color: #666; }
.theme--dark .problem-ide-case-add:hover { border-color: var(--ide-primary); color: var(--ide-primary-text); }
.theme--dark .problem-ide-case-fill { background: #2d2d2d; border-color: #444; color: #aaa; }
.theme--dark .problem-ide-case-fill:hover { border-color: var(--ide-primary); color: var(--ide-primary-text); }
.theme--dark .pretest-case-result { border-color: #333; }
.theme--dark .pretest-case-header { background: #1a1a1a; border-bottom-color: #333; }
.theme--dark .pretest-case-title { color: #ddd; }
.theme--dark .pretest-case-body { background: #1e1e1e; }
.theme--dark .pretest-case-meta { color: #666; }
.theme--dark .pretest-error-hint { background: #2a1215; border-color: #431418; color: #d32029; }
.theme--dark .pretest-error-block { background: #2b2111; border-color: #594214; }
.theme--dark .pretest-error-block--stderr { background: #2a1215; border-color: #431418; }
.theme--dark .pretest-error-block__label { color: #d89614; }
.theme--dark .pretest-error-block--stderr .pretest-error-block__label { color: #d32029; }
.theme--dark .pretest-error-block__pre { color: #ddd; }
.theme--dark .pretest-error-block__pre.ide-compile-pre { background: none; }
.theme--dark .history-table th { background: #1a1a1a; }
.theme--dark .history-table td { border-bottom-color: #333; }
.theme--dark .history-row:hover { background: #252525; }
.theme--dark .history-hint { background: #111d2c; border-bottom-color: #15395b; color: #3c9ae8; }
.theme--dark .history-footer { border-top-color: #333; color: #888; }
.theme--dark .history-load-more { color: #3c9ae8; }
.theme--dark .history-end { color: #666; }

/* ===================== 题面内嵌 AI 分析面板 ===================== */
/* AI Tab：左侧滚动区改为纵向 flex，让 #recordAiStreamRoot 顶到底 */
.problem-ide-left__scroll--ai {
  display: flex;
  flex-direction: column;
}
.problem-ide-left__scroll--ai > .problem-content-container,
.problem-ide-left__scroll--ai .problem-content,
.problem-ide-left__scroll--ai .section__body.show-hide-box-parent {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-self: stretch;
  width: 100%;
  box-sizing: border-box;
}
#content-aiAnalysis.problem_content {
  margin-top: 0 !important;
  padding-top: 0 !important;
}
.problem-ide-left__scroll--ai #content-aiAnalysis.problem_content {
  flex: 1;
  min-height: 0;
  /* 覆盖 jQuery .show() 的 inline display:block，保证纵向 flex 撑满 */
  display: flex !important;
  flex-direction: column;
  box-sizing: border-box;
}
.problem-ide-ai-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 0 14px;
  flex: 1;
  min-height: 0;
  box-sizing: border-box;
}
.problem-ide-ai-panel #recordAiStreamRoot.record-ai-stream-panel,
.problem-ide-ai-panel #recordAiStreamRoot.record-ai-stream-panel.is-result,
.problem-ide-ai-panel #recordAiStreamRoot.record-ai-stream-panel.is-loading,
.problem-ide-ai-panel #recordAiStreamRoot.record-ai-stream-panel--await-start {
  flex: 1 1 auto;
  min-height: 220px;
  max-height: none !important;
  background: transparent !important;
  border: 1px dashed #cbd5e1 !important;
  border-radius: 8px;
  overflow: auto;
  box-sizing: border-box;
}
.theme--dark .problem-ide-ai-panel #recordAiStreamRoot.record-ai-stream-panel,
.theme--dark .problem-ide-ai-panel #recordAiStreamRoot.record-ai-stream-panel.is-result,
.theme--dark .problem-ide-ai-panel #recordAiStreamRoot.record-ai-stream-panel.is-loading,
.theme--dark .problem-ide-ai-panel #recordAiStreamRoot.record-ai-stream-panel--await-start {
  background: transparent !important;
  border-color: #30363d !important;
}
.problem-ide-login-required-panel {
  margin: 16px 0;
  padding: 18px;
  text-align: center;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  background: #f8fafc;
  color: #475569;
}
.problem-ide-login-required-panel p {
  margin: 0 0 12px;
}

/* ===================== IDE 题库列表弹窗 ===================== */
.problem-ide-pset-overlay[hidden] {
  display: none !important;
}
.problem-ide-pset-overlay {
  position: fixed;
  z-index: 10020;
  top: 45px;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: stretch;
}
.problem-ide-pset-mask {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .52);
}
.problem-ide-pset-drawer {
  position: relative;
  width: min(560px, 58vw);
  min-width: 360px;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: #fff;
  box-shadow: 12px 0 30px rgba(15, 23, 42, .18);
}
.problem-ide-pset-header {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px 8px;
  border-bottom: 1px solid #eef0f3;
}
.problem-ide-pset-header__titles {
  min-width: 0;
  flex: 1;
}
.problem-ide-pset-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 12px;
}
.problem-ide-pset-choice-link {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  margin: 0;
  padding: 3px 8px;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  background: #f8fafc;
  cursor: pointer;
  font: inherit;
  font-size: 11px;
  font-weight: 500;
  line-height: 1.25;
  color: #64748b;
  white-space: nowrap;
  box-shadow: none;
  transition: color 0.12s ease, background 0.12s ease, border-color 0.12s ease;
}
.problem-ide-pset-choice-link::after {
  content: "→";
  font-size: 10px;
  font-weight: 600;
  opacity: 0.5;
}
.problem-ide-pset-choice-link:hover {
  color: #334155;
  background: #f1f5f9;
  border-color: #cbd5e1;
}
.problem-ide-pset-choice-link:hover::after {
  opacity: 0.65;
}
.problem-ide-pset-choice-link:active {
  background: #e8edf3;
  border-color: #cbd5e1;
}
.problem-ide-pset-choice-link:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.35);
  outline-offset: 2px;
}
.problem-ide-pset-title-row .problem-ide-pset-title {
  min-width: 0;
}
.problem-ide-pset-title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: 440px;
  overflow: hidden;
  font-size: 13px;
  line-height: 1.25;
  font-weight: 700;
  color: #111827;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
}
.problem-ide-pset-title.problem-ide-pset-title--clickable {
  cursor: pointer;
}
.problem-ide-pset-title.problem-ide-pset-title--clickable:hover {
  color: #404040;
}
.problem-ide-pset-title::after {
  content: "›";
  font-size: 16px;
  line-height: 1;
  color: #6b7280;
}
.problem-ide-pset-title.problem-ide-pset-title--loading {
  color: #cbd5e1;
}
.problem-ide-pset-title.problem-ide-pset-title--loading::after {
  opacity: 0;
}
.problem-ide-pset-subtitle {
  margin-top: 3px;
  font-size: 10px;
  color: #94a3b8;
}
.problem-ide-pset-close {
  width: 26px;
  height: 26px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: #64748b;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}
.problem-ide-pset-close:hover {
  background: #f1f5f9;
  color: #0f172a;
}
.problem-ide-pset-progress {
  padding: 10px 14px;
  font-size: 11px;
  color: #64748b;
  border-bottom: 1px solid #eef2f7;
  background: #fafbfc;
}
.problem-ide-pset-progress__main {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
}
.problem-ide-pset-progress__content {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.problem-ide-pset-progress__badge {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: linear-gradient(135deg, #f8fafc, #d1d5db);
  background-image: var(--problem-ide-pset-cover, none), linear-gradient(135deg, #f8fafc, #d1d5db);
  background-size: cover;
  background-position: center;
  color: #64748b;
  font-size: 0;
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, .08);
}
.problem-ide-pset-progress__label {
  margin-bottom: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #64748b;
}
.problem-ide-pset-progress__bar-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.problem-ide-pset-progress__bar {
  min-width: 72px;
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8edf3;
  box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.06);
}
.problem-ide-pset-progress__bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--ide-primary), #69b1ff);
  box-shadow: 0 0 10px rgba(var(--ide-primary-rgb),  0.18);
}
.problem-ide-pset-progress__count {
  min-width: 50px;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: #334155;
  white-space: nowrap;
}
/* 与进度条、分数同一行；三列网格末两列为 auto，不被进度条挤换行 */
label.problem-ide-pset-progress__tags {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  color: #64748b;
  white-space: nowrap;
  flex-wrap: nowrap;
  cursor: pointer;
}
label.problem-ide-pset-progress__tags input[type="checkbox"] {
  display: inline-block;
  box-sizing: border-box;
  width: 13px;
  height: 13px;
  min-width: 13px;
  max-width: 13px;
  flex: 0 0 13px;
  margin: 0;
  cursor: pointer;
  vertical-align: middle;
}
@keyframes problem-ide-pset-skeleton-shimmer {
  0% { background-position: -220px 0; }
  100% { background-position: calc(220px + 100%) 0; }
}
.problem-ide-pset-skeleton {
  display: block;
  border-radius: 6px;
  background-color: #e8edf3;
  background-image: linear-gradient(90deg, #e8edf3 0%, #f8fafc 45%, #e8edf3 90%);
  background-size: 440px 100%;
  animation: problem-ide-pset-skeleton-shimmer 1.5s ease-in-out infinite;
}
.problem-ide-pset-progress__badge--loading {
  background-image: var(--problem-ide-pset-cover, none), linear-gradient(135deg, #f8fafc, #d1d5db);
  background-size: cover;
  background-position: center;
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.08);
}
.problem-ide-pset-skeleton--label {
  width: 72px;
  height: 12px;
  margin-bottom: 8px;
}
.problem-ide-pset-skeleton--bar {
  width: 100%;
  height: 8px;
  border-radius: 999px;
}
.problem-ide-pset-section--skeleton {
  pointer-events: none;
}
.problem-ide-pset-section--skeleton .problem-ide-pset-section__header {
  display: flex;
  align-items: center;
  min-height: 34px;
  padding: 8px 12px;
  background: #f8fafc;
}
.problem-ide-pset-skeleton--section {
  width: 38%;
  height: 12px;
  margin: 0;
}
.problem-ide-pset-item--skeleton {
  pointer-events: none;
  border-top-color: #eef2f7;
}
.problem-ide-pset-skeleton--status {
  width: 18px;
  height: 18px;
  border-radius: 999px;
}
.problem-ide-pset-skeleton--idx {
  width: 42px;
  height: 12px;
}
.problem-ide-pset-skeleton--title {
  width: 100%;
  height: 12px;
}
.problem-ide-pset-skeleton--diff {
  width: 30px;
  height: 12px;
  justify-self: end;
}
.problem-ide-pset-list--loading {
  overflow: hidden;
}
.problem-ide-pset-footer__loading {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: #64748b;
}
.problem-ide-pset-footer__spinner {
  width: 12px;
  height: 12px;
  border: 2px solid #dbe3ee;
  border-top-color: var(--ide-primary);
  border-radius: 999px;
  animation: problem-ide-pset-footer-spin 0.8s linear infinite;
}
@keyframes problem-ide-pset-footer-spin {
  to { transform: rotate(360deg); }
}
.problem-ide-pset-list {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 12px 14px 16px;
}
.problem-ide-pset-section {
  overflow: hidden;
  margin-bottom: 14px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #fff;
}
.problem-ide-pset-section__header {
  padding: 7px 12px;
  font-size: 12px;
  font-weight: 700;
  color: #111827;
  background: #f3f4f6;
}
.problem-ide-pset-section__body {
  background: #fff;
}
.problem-ide-pset-item {
  display: grid;
  grid-template-columns: 20px 52px minmax(0, 1fr) auto;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 4px 6px;
  min-height: 46px;
  padding: 5px 12px;
  border: 2px solid transparent;
  border-top-width: 1px;
  border-top-color: #e5e7eb;
  border-radius: 0;
  color: #111827;
  text-decoration: none !important;
}
.problem-ide-pset-section__body .problem-ide-pset-item:first-child {
  border-top-color: transparent;
}
.problem-ide-pset-item:hover {
  background: #f8fafc;
}
.problem-ide-pset-item--current {
  background: #f5f9ff;
  color: #0f172a;
  border-color: transparent;
  border-top-color: rgba(var(--ide-primary-rgb),  0.12);
  box-shadow: inset 3px 0 0 var(--ide-primary);
}
.problem-ide-pset-item--current:hover {
  background: #eef6ff;
}
.problem-ide-pset-item__status {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #d1d5db;
  border-radius: 999px;
}
.problem-ide-pset-item__status svg {
  width: 13px;
  height: 13px;
  fill: #22c55e;
}
.problem-ide-pset-item__status--accepted {
  border-color: transparent;
}
.problem-ide-pset-item__idx {
  font-size: 12px;
  font-weight: 700;
  color: inherit;
  opacity: .9;
  text-align: left;
}
.problem-ide-pset-item__title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
  font-weight: 600;
}
.problem-ide-pset-item__diff {
  min-width: 30px;
  font-size: 11px;
  font-weight: 600;
  text-align: right;
  color: #eab308;
}
.problem-ide-pset-item__tags {
  grid-column: 3 / 5;
  display: none;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: -1px;
}
.problem-ide-pset-list--show-tags .problem-ide-pset-item__tags {
  display: flex;
}
.problem-ide-pset-item__tags em {
  display: inline-flex;
  align-items: center;
  max-width: 160px;
  padding: 1px 5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  border-radius: 999px;
  background: #f1f5f9;
  color: #64748b;
  font-size: 10px;
  font-style: normal;
}
.problem-ide-pset-item__diff--easy { color: #14b8a6; }
.problem-ide-pset-item__diff--medium { color: #eab308; }
.problem-ide-pset-item__diff--hard { color: #ef476f; }
.problem-ide-pset-footer {
  flex: 0 0 auto;
  padding: 6px 12px 10px;
  text-align: center;
  font-size: 10px;
  color: #94a3b8;
  border-top: 1px solid #f1f5f9;
}
.problem-ide-ai-panel__toolbar {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 12px;
  flex: 0 0 auto;
  min-width: 0;
}
.problem-ide-ai-panel__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  padding: 8px 10px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #f8fafc;
  font-size: 12px;
  color: #475569;
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
}
.problem-ide-ai-panel__toolbar-right {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex: 0 0 auto;
  margin-left: auto;
  max-width: min(56%, 420px);
  min-width: 0;
  align-self: stretch;
}
.problem-ide-ai-panel__rerun-btn {
  flex-shrink: 0;
}
.problem-ide-ai-panel__rerun-btn[hidden] {
  display: none !important;
}
.problem-ide-ai-panel__meta-empty {
  color: #94a3b8;
}
.problem-ide-ai-panel__meta-item {
  white-space: nowrap;
  font-size: 12px;
}
/* IDE：右上额度与左侧 meta 同款卡片，主题色强调数字 */
.problem-ide-ai-panel__toolbar .problem-ide-ai-panel__quota.ai-analysis-quota-bar,
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota {
  flex: 0 1 auto;
  min-width: 0;
  max-width: 100%;
  margin: 0;
  padding: 8px 12px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #f8fafc;
  box-shadow: none;
  text-align: right;
  font-size: 12px;
  line-height: 1.4;
  color: #64748b;
  white-space: nowrap;
  overflow: hidden;
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota.ai-analysis-quota-bar--low {
  border-color: #e5e7eb;
  background: #f8fafc;
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-meta,
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-analysis-quota-bar__inner {
  display: inline-flex;
  flex-wrap: nowrap;
  align-items: baseline;
  justify-content: flex-end;
  gap: 4px;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  color: #64748b;
  text-decoration: none;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.4;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link:hover {
  color: var(--ide-primary);
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link__label {
  color: #94a3b8;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link:hover .ai-quota-link__label {
  color: #64748b;
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link__value {
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  font-weight: 600;
  color: var(--ide-primary);
  line-height: 1.2;
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link__value--low,
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota.ai-analysis-quota-bar--low .ai-quota-link__value {
  color: #ef4444;
  font-weight: 600;
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link__icon {
  flex-shrink: 0;
  width: 12px;
  height: 12px;
  align-self: center;
  opacity: 0.55;
  color: #94a3b8;
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link:hover .ai-quota-link__icon {
  opacity: 0.9;
  color: var(--ide-primary);
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link__cool {
  color: #f59e0b;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
}
.problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-analysis-quota-bar__num {
  font-size: 15px;
  font-weight: 600;
  color: var(--ide-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota {
  color: #8b949e;
  background: #161b22;
  border: 1px solid #30363d;
  box-shadow: none;
}
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota.ai-analysis-quota-bar--low {
  border-color: #30363d;
  background: #161b22;
}
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link {
  color: #8b949e;
}
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link:hover {
  color: #79c0ff;
}
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link__label {
  color: #6e7681;
}
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link:hover .ai-quota-link__label {
  color: #8b949e;
}
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link__value,
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-analysis-quota-bar__num {
  color: var(--ide-primary-text);
}
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link__value--low,
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota.ai-analysis-quota-bar--low .ai-quota-link__value {
  color: #ff7b72;
}
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link__icon {
  color: #6e7681;
}
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link:hover .ai-quota-link__icon {
  color: #79c0ff;
}
.theme--dark .problem-ide-ai-panel .ai-analysis-quota-bar.problem-ide-ai-panel__quota .ai-quota-link__cool {
  color: #d29922;
}
.problem-ide-ai-panel__label {
  font-size: 12px;
  color: #64748b;
}
.problem-ide-ai-panel__hint {
  margin-top: -2px;
  font-size: 12px;
  color: #94a3b8;
}
.problem-ide-ai-panel__input,
.problem-ide-ai-panel__textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 13px;
}
.problem-ide-ai-panel__textarea {
  min-height: 220px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
.problem-ide-ai-panel #recordAiStreamRoot.record-ai-stream-panel--await-start {
  min-height: 160px;
  padding: 10px 12px;
}
.problem-ide-ai-panel .record-ai-await-start {
  gap: 6px;
}
.problem-ide-ai-panel .record-ai-await-start > span {
  font-size: 13px;
  color: #94a3b8;
}
.problem-ide-ai-modal {
  position: fixed;
  inset: 0;
  z-index: 100002;
}
.problem-ide-ai-modal--hidden {
  display: none;
}
.problem-ide-ai-modal__mask {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.42);
}
.problem-ide-ai-modal__dialog {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(760px, calc(100vw - 36px));
  max-height: calc(100vh - 60px);
  overflow: auto;
  padding: 16px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid #e5e7eb;
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.2);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.problem-ide-ai-modal__title {
  font-size: 16px;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 2px;
}
.problem-ide-ai-modal__footer {
  margin-top: 6px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}
.problem-ide-ai-modal__btn {
  height: 30px;
  padding: 0 14px;
  border-radius: 6px;
  border: 1px solid #d1d5db;
  background: #fff;
  color: #334155;
  font-size: 12px;
  cursor: pointer;
}
.problem-ide-ai-modal__btn--primary {
  border-color: var(--ide-primary);
  background: var(--ide-primary);
  color: #fff;
}
.theme--dark .problem-ide-ai-panel__meta {
  background: #161b22;
  border-color: #30363d;
  color: #8b949e;
}
.theme--dark .problem-ide-login-required-panel {
  background: #161b22;
  border-color: #30363d;
  color: #c9d1d9;
}
.theme--dark .problem-ide-pset-drawer { background: #1a1a1a; }
.theme--dark .problem-ide-pset-header,
.theme--dark .problem-ide-pset-progress,
.theme--dark .problem-ide-pset-footer { border-color: #404040; }
.theme--dark .problem-ide-pset-title { color: #e5e7eb; }
.theme--dark .problem-ide-pset-title.problem-ide-pset-title--loading { color: #4b5563; }
.theme--dark .problem-ide-pset-title.problem-ide-pset-title--clickable:hover { color: #d4d4d4; }
.theme--dark .problem-ide-pset-choice-link {
  background: #21262d;
  border-color: #30363d;
  color: #8b949e;
}
.theme--dark .problem-ide-pset-choice-link:hover {
  color: #c9d1d9;
  background: #30363d;
  border-color: #484f58;
}
.theme--dark .problem-ide-pset-choice-link:active {
  background: #262c36;
  border-color: #484f58;
}
.theme--dark .problem-ide-pset-choice-link:focus-visible {
  outline-color: rgba(88, 166, 255, 0.45);
}
.theme--dark .problem-ide-pset-subtitle,
.theme--dark .problem-ide-pset-progress,
.theme--dark .problem-ide-pset-footer { color: #8b949e; }
.theme--dark .problem-ide-pset-progress {
  background: #1a1f27;
  border-color: #30363d;
}
.theme--dark .problem-ide-pset-progress__label,
.theme--dark .problem-ide-pset-progress__count { color: #e5e7eb; }
.theme--dark .problem-ide-pset-progress__bar {
  background: #2d3748;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.22);
}
.theme--dark .problem-ide-pset-progress__bar span {
  background: linear-gradient(90deg, var(--ide-primary), #69b1ff);
  box-shadow: 0 0 12px rgba(var(--ide-primary-rgb),  0.28);
}
.theme--dark .problem-ide-pset-skeleton {
  background-color: #2d3748;
  background-image: linear-gradient(90deg, #2d3748 0%, #3f4d63 45%, #2d3748 90%);
}
.theme--dark .problem-ide-pset-item--skeleton {
  border-top-color: #30363d;
}
.theme--dark .problem-ide-pset-footer__loading {
  color: #8b949e;
}
.theme--dark .problem-ide-pset-footer__spinner {
  border-color: #3f4d63;
  border-top-color: var(--ide-primary-text);
}
.theme--dark .problem-ide-pset-close { color: #8b949e; }
.theme--dark .problem-ide-pset-close:hover { background: #1f2937; color: #e5e7eb; }
.theme--dark .problem-ide-pset-section {
  background: #222222;
  border-color: #404040;
}
.theme--dark .problem-ide-pset-section__header {
  background: #2a2a2a;
  color: #e5e5e5;
}
.theme--dark .problem-ide-pset-section--skeleton .problem-ide-pset-section__header {
  background: #242424;
}
.theme--dark .problem-ide-pset-section__body { background: #1f1f1f; }
.theme--dark .problem-ide-pset-item { color: #e5e7eb; }
.theme--dark .problem-ide-pset-item:hover { background: #2a2a2a; }
.theme--dark .problem-ide-pset-item--current,
.theme--dark .problem-ide-pset-item--current:hover {
  background: rgba(var(--ide-primary-rgb),  0.12);
  color: #f5f5f5;
  border-color: transparent;
  border-top-color: rgba(105, 177, 255, 0.18);
  box-shadow: inset 3px 0 0 var(--ide-primary-text);
}
.theme--dark .problem-ide-pset-item__tags em {
  background: #333333;
  color: #a3a3a3;
}
.theme--dark .problem-ide-ai-panel__meta-empty { color: #6e7681; }
.theme--dark .problem-ide-ai-panel__label { color: #8b949e; }
.theme--dark .problem-ide-ai-panel__hint { color: #6e7681; }
.theme--dark .problem-ide-ai-panel__input,
.theme--dark .problem-ide-ai-panel__textarea {
  background: #161b22;
  border-color: #30363d;
  color: #c9d1d9;
}
.theme--dark .problem-ide-ai-panel .record-ai-await-start > span {
  color: #6e7681;
}
.theme--dark .problem-ide-ai-modal__dialog {
  background: #0d1117;
  border-color: #30363d;
}
.theme--dark .problem-ide-ai-modal__title {
  color: #c9d1d9;
}
.theme--dark .problem-ide-ai-modal__btn {
  background: #21262d;
  border-color: #30363d;
  color: #c9d1d9;
}
.theme--dark .problem-ide-ai-modal__btn--primary {
  background: var(--ide-primary);
  border-color: var(--ide-primary);
  color: #fff;
}

/* ===================== 历史提交 AI分析按钮 ===================== */
.history-ai-cell { text-align: center; }
.history-ai-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 500;
  color: #1d4ed8;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 6px;
  cursor: pointer;
  box-shadow: none;
  white-space: nowrap;
  line-height: 1.4;
}
.history-ai-btn:hover {
  background: #dbeafe;
  border-color: #93c5fd;
  color: #1e40af;
  box-shadow: none;
  transform: none;
}
.history-ai-btn:active {
  background: #dbeafe;
  transform: none;
  box-shadow: none;
}

.history-ai-btn__ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.history-ai-btn__ico svg {
  display: block;
}
.theme--dark .history-ai-btn {
  color: #bfdbfe;
  background: rgba(59, 130, 246, 0.16);
  border-color: rgba(96, 165, 250, 0.45);
  box-shadow: none;
}
.theme--dark .history-ai-btn:hover {
  background: rgba(59, 130, 246, 0.26);
  border-color: rgba(147, 197, 253, 0.65);
  color: #eff6ff;
  box-shadow: none;
}

/* ===================== AI 分析对话框 ===================== */
.ai-analysis-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 9998;
  opacity: 0;
  transition: opacity .3s ease;
}
.ai-analysis-overlay.active { opacity: 1; }

.ai-analysis-dialog {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.92);
  width: 92%; max-width: 1400px;
  height: 86vh; max-height: 820px;
  background: #ffffff;
  border-radius: 18px;
  box-shadow:
    0 0 0 1px rgba(0,0,0,.04),
    0 8px 24px rgba(0,0,0,.08),
    0 24px 64px rgba(0,0,0,.14);
  z-index: 10001;
  display: flex; flex-direction: column;
  opacity: 0;
  transition: all .35s cubic-bezier(0.22, 0.61, 0.36, 1);
  overflow: hidden;
}
.ai-analysis-dialog.active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* ---- Header ---- */
.ai-analysis-header {
  display: flex; align-items: center;
  padding: 14px 20px;
  background: linear-gradient(135deg, #fafbfc 0%, #f5f6f8 100%);
  border-bottom: 1px solid #eaecef;
  flex-shrink: 0;
  gap: 12px;
}
.ai-analysis-header-left {
  display: flex; align-items: center; gap: 8px;
  flex-shrink: 0;
}
.ai-analysis-header-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  color: #f59e0b;
  flex-shrink: 0;
}

.ai-analysis-header-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}
.ai-analysis-header-title {
  font-size: 15px; font-weight: 700; color: #1a1a1a;
  letter-spacing: -.2px;
}
.ai-analysis-header-tags {
  display: flex; align-items: center; gap: 6px;
  flex: 1; min-width: 0;
  flex-wrap: wrap;
}
.ai-analysis-tag {
  display: inline-flex; align-items: center;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 11px; font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}
.ai-analysis-tag--ac { background: #ecfdf3; color: #16a34a; }
.ai-analysis-tag--partial { background: #fffbeb; color: #d97706; }
.ai-analysis-tag--err { background: #fef2f2; color: #dc2626; }
.ai-analysis-tag--score { background: #f0f5ff; color: #3b82f6; }
.ai-analysis-tag--lang { background: #f5f3ff; color: #7c3aed; }
.ai-analysis-tag--time { background: #f8fafc; color: #64748b; }

.ai-analysis-close {
  width: 30px; height: 30px;
  border: none; background: transparent;
  border-radius: 8px;
  color: #94a3b8;
  cursor: pointer; transition: all .15s;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-left: auto;
}
.ai-analysis-close:hover {
  background: rgba(0,0,0,.06); color: #334155;
}

/* ---- Body ---- */
.ai-analysis-body {
  flex: 1; min-height: 0;
  display: flex; flex-direction: row;
  gap: 0;
  overflow: hidden;
}

/* ---- Section Header ---- */
.ai-analysis-section-header {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 16px;
  font-size: 12px; font-weight: 600; color: #64748b;
  text-transform: uppercase; letter-spacing: .5px;
  border-bottom: 1px solid #f0f0f0;
  flex-shrink: 0;
  background: #fafbfc;
}
.ai-analysis-section-icon {
  color: #94a3b8; flex-shrink: 0;
}

/* ---- Code Section ---- */
.ai-analysis-code-section {
  flex: 3;
  display: flex; flex-direction: column;
  min-width: 0;
  border-right: 1px solid #eaecef;
}
.ai-analysis-code-container {
  flex: 1;
  background: #fafbfc;
  overflow: auto;
  padding: 16px 20px;
}
.ai-analysis-code-container pre {
  margin: 0;
  font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', 'Consolas', 'Monaco', 'Ubuntu Mono', monospace;
  font-size: 13px; line-height: 1.7;
  tab-size: 4;
}
.ai-analysis-code-container code {
  color: #24292f; white-space: pre;
}
.ai-analysis-code-container::-webkit-scrollbar { width: 6px; height: 6px; }
.ai-analysis-code-container::-webkit-scrollbar-track { background: transparent; }
.ai-analysis-code-container::-webkit-scrollbar-thumb { background: rgba(0,0,0,.12); border-radius: 3px; }
.ai-analysis-code-container::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,.2); }

/* Prism 语法高亮 — GitHub Light */
.ai-analysis-code-container pre[class*="language-"],
.ai-analysis-code-container code[class*="language-"] {
  background: transparent !important;
  color: #24292f !important;
  font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', 'Consolas', monospace !important;
}
.ai-analysis-code-container .token { color: #24292f !important; }
.ai-analysis-code-container .token.keyword { color: #cf222e !important; }
.ai-analysis-code-container .token.string { color: #0a3069 !important; }
.ai-analysis-code-container .token.comment { color: #6e7781 !important; font-style: italic; }
.ai-analysis-code-container .token.function { color: #8250df !important; }
.ai-analysis-code-container .token.number { color: #0550ae !important; }
.ai-analysis-code-container .token.operator { color: #24292f !important; }
.ai-analysis-code-container .token.class-name { color: #953800 !important; }
.ai-analysis-code-container .token.builtin { color: #0550ae !important; }
.ai-analysis-code-container .token.punctuation { color: #24292f !important; }

/* ---- AI Section ----（.ai-analysis-ai-section / .ai-analysis-ai-container 见 record-ai-ide-surface.css） */

/* 空状态 */
.ai-analysis-empty {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 12px;
  padding: 32px;
  text-align: center;
}

/* 限额提示（非会员 / 未购题库） */
.ai-analysis-quota-bar {
  flex-shrink: 0;
  padding: 8px 14px 10px;
  border-bottom: 1px solid #fde68a;
  background: linear-gradient(180deg, #fffbeb, #fff7ed);
  font-size: 13px;
  color: #57534e;
  text-align: center;
  line-height: 1.55;
}
.ai-analysis-quota-bar--low {
  border-bottom-color: #fecaca;
  background: linear-gradient(180deg, #fef2f2, #fff1f2);
}
.ai-analysis-quota-bar__num {
  font-weight: 700;
  color: #92400e;
}
.ai-analysis-quota-bar__vip-link {
  color: #f97316 !important;
  font-weight: 700;
  text-decoration: none;
}
.ai-analysis-quota-bar__vip-link:hover {
  text-decoration: underline;
  color: #ea580c;
}
.ai-analysis-quota-bar__vip-link strong {
  font-weight: 700;
}
.ai-analysis-quota-bar .ai-quota-meta {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.ai-analysis-quota-bar .ai-quota-link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  color: #78716c;
  text-decoration: none;
  font-size: 12px;
  line-height: 18px;
}
.ai-analysis-quota-bar .ai-quota-link:hover {
  color: var(--ide-primary);
}
.ai-analysis-quota-bar .ai-quota-link__label {
  color: #a8a29e;
  font-weight: 500;
}
.ai-analysis-quota-bar .ai-quota-link__value {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--ide-primary);
}
.ai-analysis-quota-bar .ai-quota-link__value--low,
.ai-analysis-quota-bar--low .ai-quota-link__value {
  color: #b91c1c;
  font-weight: 600;
}
.ai-analysis-quota-bar .ai-quota-link__icon {
  flex-shrink: 0;
  opacity: 0.85;
}
.ai-analysis-quota-bar .ai-quota-link__cool {
  color: #ea580c;
  font-size: 12px;
  line-height: 18px;
}
.ai-analysis-ask-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}
.ai-analysis-ask-btn:disabled:hover {
  transform: none;
  filter: none;
}

/* 开始按钮 */
.ai-analysis-ask-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 28px;
  font-size: 14px; font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #f59e0b, #f97316);
  border: none; border-radius: 10px;
  cursor: pointer;
  transition: all .2s ease;
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.3);
  margin-top: 4px;
}
.ai-analysis-ask-btn:hover {
  background: linear-gradient(135deg, #f97316, #ea580c);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
  transform: translateY(-1px);
}
.ai-analysis-ask-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
}
.ai-analysis-ask-btn .ai-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.ai-analysis-ask-btn .ai-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Loading */
.ai-analysis-loading { position: relative; min-height: 200px; }
.ai-analysis-loading > *:not(.ai-analysis-spinner) { display: none !important; }
.ai-analysis-spinner {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 36px; height: 36px;
  border: 3px solid rgba(249, 115, 22, 0.15);
  border-top-color: #f97316;
  border-radius: 50%;
  animation: ai-spin .7s linear infinite;
}
@keyframes ai-spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

/* ===================== AI 对话框暗色模式 ===================== */
.theme--dark .ai-analysis-dialog {
  background: #0d1117;
  box-shadow:
    0 0 0 1px rgba(255,255,255,.06),
    0 8px 24px rgba(0,0,0,.3),
    0 24px 64px rgba(0,0,0,.4);
}
.theme--dark .ai-analysis-header {
  background: linear-gradient(135deg, #161b22 0%, #1c2128 100%);
  border-bottom-color: #21262d;
}
.theme--dark .ai-analysis-header-title { color: #e6edf3; }
.theme--dark .ai-analysis-header-icon { color: #fbbf24; }
.theme--dark .ai-analysis-tag--ac { background: #0a2e1c; color: #3fb950; }
.theme--dark .ai-analysis-tag--partial { background: #2d1f04; color: #d29922; }
.theme--dark .ai-analysis-tag--err { background: #2d0a0a; color: #f85149; }
.theme--dark .ai-analysis-tag--score { background: #0c1929; color: var(--ide-primary-text); }
.theme--dark .ai-analysis-tag--lang { background: #1c0f30; color: #bc8cff; }
.theme--dark .ai-analysis-tag--time { background: #161b22; color: #6e7681; }
.theme--dark .ai-analysis-close { color: #484f58; }
.theme--dark .ai-analysis-close:hover { background: rgba(255,255,255,.08); color: #c9d1d9; }

.theme--dark .ai-analysis-section-header {
  background: #161b22; border-bottom-color: #21262d; color: #6e7681;
}
.theme--dark .ai-analysis-section-icon { color: #484f58; }

.theme--dark .ai-analysis-code-section { border-right-color: #21262d; }
.theme--dark .ai-analysis-code-container { background: #0d1117; }
.theme--dark .ai-analysis-code-container code { color: #e6edf3; }
.theme--dark .ai-analysis-code-container::-webkit-scrollbar-thumb { background: rgba(255,255,255,.1); }
.theme--dark .ai-analysis-code-container::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,.18); }

/* Prism — GitHub Dark */
.theme--dark .ai-analysis-code-container pre[class*="language-"],
.theme--dark .ai-analysis-code-container code[class*="language-"] {
  background: transparent !important; color: #e6edf3 !important;
}
.theme--dark .ai-analysis-code-container .token { color: #e6edf3 !important; }
.theme--dark .ai-analysis-code-container .token.keyword { color: #ff7b72 !important; }
.theme--dark .ai-analysis-code-container .token.string { color: #a5d6ff !important; }
.theme--dark .ai-analysis-code-container .token.comment { color: #8b949e !important; font-style: italic; }
.theme--dark .ai-analysis-code-container .token.function { color: #d2a8ff !important; }
.theme--dark .ai-analysis-code-container .token.number { color: #79c0ff !important; }
.theme--dark .ai-analysis-code-container .token.operator { color: #e6edf3 !important; }
.theme--dark .ai-analysis-code-container .token.class-name { color: #ffa657 !important; }
.theme--dark .ai-analysis-code-container .token.builtin { color: #79c0ff !important; }
.theme--dark .ai-analysis-code-container .token.punctuation { color: #8b949e !important; }

.theme--dark .ai-analysis-quota-bar {
  border-bottom-color: #422006;
  background: linear-gradient(180deg, #2d1f04, #1c1410);
  color: #d6d3d1;
}
.theme--dark .ai-analysis-quota-bar__num {
  color: #fdba74;
}
.theme--dark .ai-analysis-quota-bar__vip-link {
  color: #fb923c;
}
.theme--dark .ai-analysis-quota-bar__vip-link:hover {
  color: #fdba74;
}

.problem-ide-ai-result {
  padding: 20px 0;
}
.problem-ide-ai-result__summary {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: center;
  margin-bottom: 18px;
  padding: 12px 14px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #f8fafc;
  color: #475569;
  font-size: 14px;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}
.problem-ide-ai-result__badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, #f59e0b, #f97316);
  color: #fff;
  font-weight: 600;
}
.problem-ide-ai-result__content {
  padding: 16px 18px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
  font-size: 15px;
  line-height: 1.75;
  color: #1f2937;
}
.problem-ide-ai-result__content > :first-child {
  margin-top: 0;
}
.problem-ide-ai-result__content > :last-child {
  margin-bottom: 0;
}
.problem-ide-ai-result__content h1,
.problem-ide-ai-result__content h2,
.problem-ide-ai-result__content h3,
.problem-ide-ai-result__content h4,
.problem-ide-ai-result__content h5,
.problem-ide-ai-result__content h6 {
  margin-top: 20px;
  margin-bottom: 10px;
  line-height: 1.4;
}
.problem-ide-ai-result__content h1 { font-size: 26px; }
.problem-ide-ai-result__content h2 { font-size: 22px; }
.problem-ide-ai-result__content h3 { font-size: 18px; }
.problem-ide-ai-result__content p {
  margin: 0 0 12px;
}
.problem-ide-ai-result__content ul,
.problem-ide-ai-result__content ol {
  margin-top: 8px;
  margin-bottom: 12px;
  padding-left: 1.45em;
}
.problem-ide-ai-result__content li + li {
  margin-top: 4px;
}
.problem-ide-ai-result__content code:not(pre code) {
  padding: 0.12em 0.4em;
  border-radius: 5px;
  background: #f3f4f6;
  color: #b42318;
}
.problem-ide-ai-result__content blockquote {
  margin: 14px 0;
  padding: 8px 12px;
  border-left: 4px solid #d0d7de;
  border-radius: 0 8px 8px 0;
  background: #f6f8fa;
  color: #57606a;
}

/* 题面代码块：原生 toolbar-item 改成框内右上角悬挂的复制按钮 */
#problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .code-toolbar {
  position: relative;
}
#problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .code-toolbar > .toolbar,
#problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .sample > .toolbar {
  display: flex !important;
  position: absolute !important;
  top: 8px !important;
  right: 8px !important;
  left: auto !important;
  padding: 0 !important;
  margin: 0 !important;
  background: transparent !important;
  border: 0 !important;
  opacity: 1 !important;
  z-index: 2;
  pointer-events: none;
}
#problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .toolbar-item:not(.scratchpad-fill-button) {
  display: inline-flex;
  pointer-events: auto;
}
#problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .toolbar-item:not(.scratchpad-fill-button) > a,
#problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .toolbar-item:not(.scratchpad-fill-button) > button {
  margin: 0 !important;
  padding: 4px 12px !important;
  border: 1px solid #d1d5db !important;
  border-radius: 6px !important;
  background: #fff !important;
  color: #111827 !important;
  font-size: 12px !important;
  font-weight: 600 !important;
  line-height: 1.2 !important;
  text-decoration: none !important;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}
#problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .toolbar-item:not(.scratchpad-fill-button) > a:hover,
#problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .toolbar-item:not(.scratchpad-fill-button) > button:hover {
  background: #f8fafc !important;
  border-color: #9ca3af !important;
}
.theme--dark #problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .toolbar-item:not(.scratchpad-fill-button) > a,
.theme--dark #problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .toolbar-item:not(.scratchpad-fill-button) > button {
  border-color: #444c56 !important;
  background: #373e47 !important;
  color: #e6edf3 !important;
}
.theme--dark #problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .toolbar-item:not(.scratchpad-fill-button) > a:hover,
.theme--dark #problemIdeProblemContent .problem_content:not(#content-aiAnalysis):not(#content-textSol) .toolbar-item:not(.scratchpad-fill-button) > button:hover {
  background: #444c56 !important;
  border-color: #636c76 !important;
}

/* AI 分析注入题面：Prism 风格 code-toolbar（与 markdown-body 中隐藏 toolbar 的全局规则对抗，此处须显示） */
.problem-ide-ai-result__content.markdown-body .code-toolbar .toolbar {
  display: flex !important;
  align-items: center;
  justify-content: flex-end;
  padding: 6px 8px 0;
  margin: 0;
  border: none;
  background: transparent;
}

.problem-ide-ai-result__content .code-toolbar {
  position: relative;
  margin: 16px 0;
  border: 1px solid #d0d7de;
  border-radius: 8px;
  overflow: hidden;
  background: #f6f8fa;
}

.theme--dark .problem-ide-ai-result__content .code-toolbar {
  border-color: #30363d;
  background: #161b22;
}

.ai-analysis-apply-toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 100001;
  width: min(360px, calc(100vw - 32px));
  padding: 16px;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255, 251, 235, 0.98), rgba(255, 255, 255, 0.98));
  border: 1px solid rgba(249, 115, 22, 0.28);
  box-shadow:
    0 0 0 1px rgba(251, 191, 36, 0.18),
    0 20px 48px rgba(15, 23, 42, 0.22);
  backdrop-filter: blur(10px);
  animation: ai-apply-toast-pop .22s ease-out;
  overflow: hidden;
}
.ai-analysis-apply-toast__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  color: #c2410c;
  margin-bottom: 8px;
}
.ai-analysis-apply-toast__title::before {
  content: '';
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, #fde68a, #f59e0b 65%, #ea580c);
  box-shadow: 0 0 0 2px rgba(251, 191, 36, 0.2);
  flex-shrink: 0;
}
.ai-analysis-apply-toast__message {
  color: #334155;
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 12px;
}
.ai-analysis-apply-toast__actions {
  display: flex;
  gap: 10px;
}
.ai-analysis-apply-toast__reject,
.ai-analysis-apply-toast__confirm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 1 1 0;
  height: 40px;
  padding: 0 16px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}
.ai-analysis-apply-toast__reject {
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(255, 255, 255, 0.82);
  color: #475569;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}
.ai-analysis-apply-toast__confirm {
  border: none;
  background: linear-gradient(135deg, #f59e0b, #f97316);
  color: #fff;
  box-shadow: 0 10px 24px rgba(249, 115, 22, 0.28);
}
.ai-analysis-apply-toast__reject:hover {
  background: rgba(255, 255, 255, 0.96);
  border-color: rgba(100, 116, 139, 0.55);
}
.ai-analysis-apply-toast__confirm:hover {
  filter: brightness(1.06);
}
.ai-analysis-apply-toast__reject:active,
.ai-analysis-apply-toast__confirm:active {
  transform: translateY(1px);
}
@keyframes ai-apply-toast-pop {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.theme--dark .problem-ide-ai-result__summary {
  background: #161b22;
  border-color: #30363d;
  color: #8b949e;
}
.theme--dark .problem-ide-ai-result__content {
  background: #0d1117;
  border-color: #30363d;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
  color: #c9d1d9;
}
.theme--dark .problem-ide-ai-result__content code:not(pre code) {
  background: #21262d;
  color: #ffb86b;
}
.theme--dark .problem-ide-ai-result__content blockquote {
  background: #161b22;
  border-left-color: #30363d;
  color: #8b949e;
}
.theme--dark .ai-analysis-apply-toast {
  background: linear-gradient(180deg, rgba(54, 31, 8, 0.96), rgba(22, 27, 34, 0.96));
  border-color: rgba(249, 115, 22, 0.35);
  box-shadow:
    0 0 0 1px rgba(251, 191, 36, 0.12),
    0 18px 40px rgba(0, 0, 0, 0.35);
}
.theme--dark .ai-analysis-apply-toast__title {
  color: #fdba74;
}
.theme--dark .ai-analysis-apply-toast__title::before {
  background: radial-gradient(circle at 30% 30%, #fcd34d, #f59e0b 60%, #b45309);
  box-shadow: 0 0 0 2px rgba(251, 191, 36, 0.18);
}
.theme--dark .ai-analysis-apply-toast__message {
  color: #c9d1d9;
}
.theme--dark .ai-analysis-apply-toast__reject {
  background: rgba(30, 41, 59, 0.72);
  border-color: rgba(148, 163, 184, 0.28);
  color: #cbd5e1;
  box-shadow: none;
}
.theme--dark .ai-analysis-apply-toast__reject:hover {
  background: rgba(51, 65, 85, 0.88);
  border-color: rgba(148, 163, 184, 0.4);
}

/* ===================== AI 对话框响应式 ===================== */
@media (max-width: 1024px) {
  .ai-analysis-dialog { width: 95%; height: 90vh; }
  .ai-analysis-body { flex-direction: column; }
  .ai-analysis-code-section { flex: none; max-height: 40%; border-right: none; border-bottom: 1px solid #eaecef; }
  .theme--dark .ai-analysis-code-section { border-bottom-color: #21262d; }
  .ai-analysis-ai-section { flex: 1; min-height: 200px; }
}

/* ===================== AI 确认弹窗 ===================== */
@keyframes ai-confirm-fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes ai-confirm-fade-out { from { opacity: 1; } to { opacity: 0; } }
@keyframes ai-confirm-zoom-in { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }
@keyframes ai-confirm-zoom-out { from { opacity: 1; transform: scale(1); } to { opacity: 0; transform: scale(0.9); } }

.ai-confirm-mask {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 99999;
  opacity: 0;
}
.ai-confirm-dialog {
  width: 420px; max-width: 90vw;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.16);
  padding: 24px 32px 20px;
  box-sizing: border-box;
  opacity: 0; transform: scale(0.9);
}
.ai-confirm-enter-mask { animation: ai-confirm-fade-in .22s forwards; }
.ai-confirm-enter-dialog { animation: ai-confirm-zoom-in .22s forwards; }
.ai-confirm-leave-mask { animation: ai-confirm-fade-out .18s forwards; }
.ai-confirm-leave-dialog { animation: ai-confirm-zoom-out .18s forwards; }

.ai-confirm-header {
  display: flex; align-items: center; margin-bottom: 16px;
}
.ai-confirm-icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  background-color: #00b578;
  display: flex; align-items: center; justify-content: center;
  margin-right: 12px; flex-shrink: 0;
  color: #fff; font-size: 22px;
}
.ai-confirm-title {
  font-size: 18px; font-weight: 600; color: #333;
}
.ai-confirm-content {
  font-size: 14px; color: #666; line-height: 1.6; margin-bottom: 24px;
}
.ai-confirm-footer {
  display: flex; justify-content: flex-end; gap: 12px;
}
.ai-confirm-btn {
  min-width: 80px; height: 32px; padding: 0 14px;
  border-radius: 4px; border: 1px solid transparent;
  font-size: 14px; cursor: pointer;
}
.ai-confirm-btn:active { transform: translateY(1px); }
.ai-confirm-btn:hover { filter: brightness(1.05); }
.ai-confirm-btn-cancel {
  background: #f5f5f5; border-color: #d9d9d9; color: #333;
}
.ai-confirm-btn-cancel:hover { background: #e0e0e0; border-color: #bfbfbf; }
.ai-confirm-btn-confirm {
  background: #4CAF50; border-color: #4CAF50; color: #fff;
}
.ai-confirm-btn-confirm:hover { background: #45a049; border-color: #45a049; }

/* 确认弹窗暗色模式 */
.theme--dark .ai-confirm-dialog {
  background: #161b22; box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}
.theme--dark .ai-confirm-title { color: #c9d1d9; }
.theme--dark .ai-confirm-content { color: #8b949e; }
.theme--dark .ai-confirm-btn-cancel {
  background: #21262d; border-color: #30363d; color: #c9d1d9;
}
.theme--dark .ai-confirm-btn-cancel:hover { background: #30363d; border-color: #484f58; }

/* 题面「我的笔记」样式见 problem_detail_note.css（由 problem_detail_note.page.ts 引入） */

/* ===================== 响应式 ===================== */
@media (max-width: 768px) {
  .problem-ide-root { flex-direction: column; position: relative; height: auto; min-height: 100vh; }
  .problem-ide-left { flex: none; max-width: 100%; height: 45vh; min-height: 200px; padding: 8px 8px 0; }
  .problem-ide-gutter { flex: 0 0 5px; cursor: row-resize; }
  .problem-ide-gutter::before { top: 1px; bottom: auto; left: 0; right: 0; width: auto; height: 3px; }
  .problem-ide-gutter::after { inset: -3px 0; }
  .problem-ide-right { min-width: unset; flex: 1; min-height: 300px; padding: 0 8px 8px; }
  .problem-ide-right__pending { inset: 0 8px 8px; }
  .pretest-compare { flex-direction: column; }
  .ai-analysis-apply-toast {
    right: 16px;
    bottom: 16px;
    width: calc(100vw - 32px);
  }
}