/* RAG 知识库运营台 · 高保真原型（对齐参考截图） */
:root {
  --kb-bg: #f5f6f8;
  --kb-surface: #ffffff;
  --kb-border: #e8eaef;
  --kb-border-strong: #dcdfe6;
  --kb-text: #1f2329;
  --kb-text-secondary: #646a73;
  --kb-text-muted: #8f959e;
  --kb-primary: #3370ff;
  --kb-primary-hover: #2860e0;
  --kb-primary-soft: rgba(51, 112, 255, 0.08);
  --kb-danger: #f54a45;
  --kb-radius: 8px;
  --kb-radius-lg: 12px;
  --kb-shadow: 0 2px 8px rgba(31, 35, 41, 0.06);
  --kb-font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, sans-serif;
  --kb-page-pad-x: 32px;
  --kb-page-pad-top: 32px;
  --kb-page-pad-bottom: 48px;
  --kb-section-gap: 28px;
  --kb-stats-gap: 20px;
}

.rag-kb-root {
  font-family: var(--kb-font);
  color: var(--kb-text);
  background: var(--kb-bg);
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

/* 知识库列表 · 主区占满侧栏右侧并独立滚动 */
.demo-layout.kb-outer-layout .demo-main.kb-list-main {
  padding: 0;
  align-items: stretch;
  justify-content: flex-start;
  background: var(--kb-bg);
  overflow: auto;
  min-height: 0;
}

/* —— 列表页布局 —— */
.kb-list-page {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: min-content;
  padding: var(--kb-page-pad-top) var(--kb-page-pad-x) var(--kb-page-pad-bottom);
  gap: 0;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
}

.kb-list-page-header {
  flex-shrink: 0;
  margin-bottom: var(--kb-stats-gap);
}

.kb-list-body {
  display: flex;
  flex-direction: column;
  gap: var(--kb-section-gap);
  flex: 1;
  min-height: 0;
}

.kb-list-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 2px 0 4px;
  flex-wrap: wrap;
}

.kb-list-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--kb-text);
  margin: 0;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

/* 列表页顶部统计条 */
.kb-stats-strip {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 8px 0;
  background: var(--kb-surface);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-lg);
  padding: 22px 20px 24px;
  margin: 0;
  box-shadow: 0 1px 2px rgba(31, 35, 41, 0.04), 0 4px 16px rgba(31, 35, 41, 0.05);
}

.kb-stat-item {
  flex: 1;
  min-width: 108px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 6px 14px;
  position: relative;
}

.kb-stat-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 22%;
  height: 56%;
  width: 1px;
  background: linear-gradient(
    180deg,
    transparent 0%,
    var(--kb-border) 18%,
    var(--kb-border) 82%,
    transparent 100%
  );
}

.kb-stat-label {
  font-size: 12px;
  color: var(--kb-text-muted);
  white-space: nowrap;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.kb-stat-value-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.kb-stat-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
}

.kb-stat-icon--kb {
  background: rgba(51, 112, 255, 0.12);
  color: var(--kb-primary);
}

.kb-stat-icon--dataset {
  background: rgba(51, 112, 255, 0.1);
  color: #4e83fd;
}

.kb-stat-icon--doc {
  background: rgba(52, 199, 89, 0.15);
  color: #34c759;
}

.kb-stat-icon--chunk {
  background: rgba(255, 149, 0, 0.15);
  color: #ff9500;
}

.kb-stat-icon--processing {
  background: rgba(51, 112, 255, 0.1);
  color: #4e83fd;
}

.kb-stat-icon--failed {
  background: rgba(245, 74, 69, 0.12);
  color: var(--kb-danger);
}

.kb-stat-num {
  font-size: 22px;
  font-weight: 600;
  color: var(--kb-text);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.kb-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.kb-tab {
  padding: 8px 14px;
  font-size: 14px;
  color: var(--kb-text-secondary);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, color 0.15s;
}

.kb-tab:hover {
  background: rgba(0, 0, 0, 0.04);
  color: var(--kb-text);
}

.kb-tab.is-active {
  color: var(--kb-primary);
  background: var(--kb-primary-soft);
  font-weight: 500;
}

.kb-list-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.kb-search-wrap {
  display: flex;
  align-items: center;
  background: var(--kb-surface);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  overflow: hidden;
  height: 36px;
}

.kb-search-wrap select {
  border: none;
  border-right: 1px solid var(--kb-border);
  padding: 0 10px;
  font-size: 13px;
  color: var(--kb-text-secondary);
  background: #fafbfc;
  height: 100%;
  font-family: inherit;
  cursor: pointer;
}

.kb-search-wrap input {
  border: none;
  padding: 0 12px;
  width: 200px;
  font-size: 13px;
  outline: none;
  font-family: inherit;
}

.kb-icon-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  background: var(--kb-surface);
  color: var(--kb-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kb-icon-btn:hover {
  border-color: var(--kb-border-strong);
  color: var(--kb-text);
}

.kb-create-wrap {
  position: relative;
}

.kb-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 16px;
  background: var(--kb-primary);
  color: #fff;
  border: none;
  border-radius: var(--kb-radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}

.kb-btn-primary:hover {
  background: var(--kb-primary-hover);
}

.kb-create-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  width: 320px;
  background: var(--kb-surface);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-lg);
  box-shadow: 0 8px 24px rgba(31, 35, 41, 0.12);
  padding: 6px;
  z-index: 200;
  display: none;
}

.kb-create-menu.is-open {
  display: block;
}

.kb-create-item {
  display: flex;
  gap: 12px;
  padding: 12px;
  border-radius: var(--kb-radius);
  cursor: pointer;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-family: inherit;
}

.kb-create-item:hover {
  background: #f5f6f8;
}

.kb-create-item-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.kb-create-item-icon--general {
  background: rgba(51, 112, 255, 0.12);
  color: var(--kb-primary);
}

.kb-create-item-icon--web {
  background: rgba(114, 46, 209, 0.12);
  color: #722ed1;
}

.kb-create-item-icon--workflow {
  background: rgba(250, 140, 22, 0.15);
  color: #fa8c16;
}

.kb-create-item-icon--import {
  background: rgba(0, 0, 0, 0.06);
  color: var(--kb-text-secondary);
}

.kb-create-item h4 {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--kb-text);
}

.kb-create-item p {
  font-size: 12px;
  color: var(--kb-text-muted);
  line-height: 1.45;
}

/* —— 卡片网格 —— */
.kb-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
  padding-bottom: 4px;
}

.kb-card {
  position: relative;
  background: var(--kb-surface);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-lg);
  padding: 18px 18px 14px;
  transition: box-shadow 0.15s, border-color 0.15s;
  color: inherit;
  display: block;
}

.kb-card:hover {
  box-shadow: var(--kb-shadow);
  border-color: #d0d3d9;
}

.kb-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  padding-right: 4px;
}

.kb-card-status {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  font-size: 12px;
  line-height: 1;
  padding: 4px 10px;
  border-radius: 4px;
  font-weight: 500;
  pointer-events: none;
}

.kb-card-status--active {
  color: #2ba471;
  background: rgba(43, 164, 113, 0.1);
  border: 1px solid rgba(43, 164, 113, 0.25);
}

.kb-card-status--inactive {
  color: var(--kb-text-muted);
  background: #f5f6f8;
  border: 1px solid var(--kb-border);
}

.kb-card-more-wrap {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 3;
}

.kb-card-more-btn {
  width: 32px;
  height: 28px;
  border: 1px solid var(--kb-border);
  border-radius: 6px;
  background: var(--kb-surface);
  color: var(--kb-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s, background 0.15s, border-color 0.15s;
  box-shadow: 0 1px 4px rgba(31, 35, 41, 0.06);
}

.kb-card:hover .kb-card-more-btn,
.kb-card-more-wrap:has(.kb-card-more-menu.is-open) .kb-card-more-btn {
  opacity: 1;
  pointer-events: auto;
}

.kb-card-more-btn:hover {
  background: #f5f6f8;
  border-color: #d0d3d9;
}

.kb-card-more-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  min-width: 168px;
  background: var(--kb-surface);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  box-shadow: 0 8px 24px rgba(31, 35, 41, 0.12);
  padding: 4px 0;
  display: none;
  z-index: 50;
}

.kb-card-more-menu::after {
  content: "";
  position: absolute;
  right: 14px;
  top: -6px;
  width: 10px;
  height: 10px;
  background: var(--kb-surface);
  border-left: 1px solid var(--kb-border);
  border-top: 1px solid var(--kb-border);
  transform: rotate(45deg);
}

.kb-card-more-menu.is-open {
  display: block;
}

.kb-card-more-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 14px;
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 13px;
  color: var(--kb-text);
  text-align: left;
  cursor: pointer;
  white-space: nowrap;
}

.kb-card-more-item i {
  width: 16px;
  font-size: 13px;
  color: var(--kb-text-secondary);
  text-align: center;
  flex-shrink: 0;
}

.kb-card-more-item:hover {
  background: #f5f6f8;
}

.kb-card-more-item--danger {
  color: var(--kb-text);
}

.kb-card-more-divider {
  height: 1px;
  margin: 4px 0;
  background: var(--kb-border);
}

.kb-card-head {
  display: flex;
  gap: 12px;
  margin-bottom: 10px;
}

.kb-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.kb-card-icon--general { background: rgba(51, 112, 255, 0.12); color: var(--kb-primary); }
.kb-card-icon--web { background: rgba(114, 46, 209, 0.12); color: #722ed1; }
.kb-card-icon--workflow { background: rgba(250, 140, 22, 0.15); color: #fa8c16; }

.kb-card-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kb-card-creator {
  font-size: 12px;
  color: var(--kb-text-muted);
}

.kb-card-desc {
  font-size: 13px;
  color: var(--kb-text-secondary);
  line-height: 1.5;
  margin: 10px 0 14px;
  min-height: 40px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kb-card-stats {
  display: flex;
  gap: 16px;
  padding-top: 12px;
  border-top: 1px solid #f0f1f3;
  font-size: 12px;
  color: var(--kb-text-muted);
}

.kb-card-stats strong {
  color: var(--kb-text);
  font-weight: 500;
}

.kb-empty-list {
  text-align: center;
  padding: 80px 24px;
  color: var(--kb-text-muted);
  font-size: 14px;
}

/* —— 弹窗 —— */
.kb-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 500;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.kb-modal-backdrop.is-open {
  display: flex;
}

.kb-modal {
  width: min(520px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  background: var(--kb-surface);
  border-radius: var(--kb-radius-lg);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.18);
}

.kb-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--kb-border);
}

.kb-modal-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.kb-modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--kb-text-muted);
  cursor: pointer;
  border-radius: 6px;
  font-size: 18px;
}

.kb-modal-close:hover {
  background: #f5f6f8;
}

.kb-modal-body {
  padding: 20px;
}

.kb-modal--compact {
  width: min(400px, 100%);
}

.kb-modal--weblink {
  width: min(560px, 100%);
}

.kb-radio-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.kb-radio-option {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 14px;
  color: var(--kb-text);
  margin: 0;
}

.kb-radio-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.kb-radio-mark {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid var(--kb-border-strong);
  background: var(--kb-surface);
  flex-shrink: 0;
  position: relative;
  transition: border-color 0.15s;
}

.kb-radio-option input:checked + .kb-radio-mark {
  border-color: var(--kb-primary);
  border-width: 5px;
}

.kb-radio-label {
  line-height: 1.4;
}

.kb-field {
  margin-bottom: 18px;
}

.kb-field > label {
  display: block;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--kb-text);
}

.kb-field .kb-radio-option {
  display: flex;
  align-items: center;
  margin-bottom: 0;
  font-weight: 400;
}

.kb-field label .req {
  color: var(--kb-danger);
  margin-left: 2px;
}

.kb-field input[type="text"],
.kb-field input[type="url"],
.kb-field textarea,
.kb-field select {
  width: 100%;
  border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius);
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.kb-field input:focus,
.kb-field textarea:focus,
.kb-field select:focus {
  border-color: var(--kb-primary);
  box-shadow: 0 0 0 2px var(--kb-primary-soft);
}

.kb-field textarea {
  min-height: 96px;
  resize: vertical;
  line-height: 1.55;
}

.kb-char-count {
  text-align: right;
  font-size: 12px;
  color: var(--kb-text-muted);
  margin-top: 4px;
}

.kb-select-wrap {
  position: relative;
}

.kb-select-wrap select {
  appearance: none;
  padding-right: 36px;
}

.kb-select-wrap::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  margin-top: -3px;
  border: 5px solid transparent;
  border-top-color: var(--kb-text-muted);
  pointer-events: none;
}

.kb-link-add {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 8px;
  font-size: 13px;
  color: var(--kb-primary);
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
}

.kb-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 14px 20px 18px;
}

.kb-btn-default {
  height: 36px;
  padding: 0 18px;
  border: 1px solid var(--kb-border-strong);
  background: var(--kb-surface);
  border-radius: var(--kb-radius);
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
}

.kb-btn-default:hover {
  background: #fafbfc;
}

/* —— 知识库内页布局 —— */
.kb-workspace {
  flex: 1;
  display: flex;
  min-height: 0;
  background: var(--kb-bg);
}

.kb-workspace-aside {
  width: 200px;
  flex-shrink: 0;
  background: var(--kb-surface);
  border-right: 1px solid var(--kb-border);
  display: flex;
  flex-direction: column;
  padding: 16px 10px;
}

.kb-ws-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px 16px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--kb-border);
}

.kb-ws-brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--kb-primary-soft);
  color: var(--kb-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.kb-ws-brand span {
  font-size: 14px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kb-ws-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--kb-radius);
  font-size: 14px;
  color: var(--kb-text-secondary);
  text-decoration: none;
  margin-bottom: 2px;
}

.kb-ws-nav a:hover {
  background: #f5f6f8;
  color: var(--kb-text);
}

.kb-ws-nav a.is-active {
  background: var(--kb-primary-soft);
  color: var(--kb-primary);
  font-weight: 500;
}

.kb-ws-nav a i {
  width: 18px;
  text-align: center;
  font-size: 15px;
}

.kb-workspace-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 20px 24px;
  overflow: hidden;
}

.kb-ws-page-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
}

.kb-panel {
  flex: 1;
  background: var(--kb-surface);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-lg);
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.kb-doc-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--kb-border);
  flex-wrap: wrap;
  gap: 10px;
}

.kb-doc-toolbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.kb-btn-sm {
  height: 32px;
  padding: 0 12px;
  font-size: 13px;
  border-radius: 6px;
  border: 1px solid var(--kb-border-strong);
  background: var(--kb-surface);
  cursor: pointer;
  font-family: inherit;
  color: var(--kb-text);
}

.kb-btn-sm.primary {
  background: var(--kb-primary);
  border-color: var(--kb-primary);
  color: #fff;
}

.kb-btn-sm:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.kb-doc-search {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--kb-border);
  border-radius: 6px;
  padding: 0 10px;
  height: 32px;
  background: #fafbfc;
}

.kb-doc-search input {
  border: none;
  background: transparent;
  font-size: 13px;
  width: 160px;
  outline: none;
  font-family: inherit;
}

.kb-table-wrap {
  flex: 1;
  overflow: auto;
}

.kb-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.kb-table th {
  text-align: left;
  padding: 10px 12px;
  background: #fafbfc;
  color: var(--kb-text-secondary);
  font-weight: 500;
  border-bottom: 1px solid var(--kb-border);
  white-space: nowrap;
}

.kb-table th .th-sort {
  margin-left: 4px;
  color: #c0c4cc;
  font-size: 11px;
}

.kb-table td {
  padding: 12px;
  border-bottom: 1px solid #f0f1f3;
  color: var(--kb-text);
  vertical-align: middle;
}

.kb-table tr:hover td {
  background: #fafbfc;
}

.kb-table-empty {
  text-align: center;
  padding: 48px 16px;
  color: var(--kb-text-muted);
}

.kb-quick-link {
  color: var(--kb-primary);
  font-size: 13px;
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
  padding: 0;
}

.kb-status-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.kb-status-dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #52c41a;
}

.kb-status-dot.pending::before { background: #faad14; }
.kb-status-dot.error::before { background: #f5222d; }

.kb-switch {
  width: 36px;
  height: 20px;
  border-radius: 10px;
  background: #c0c4cc;
  position: relative;
  cursor: pointer;
  border: none;
  padding: 0;
}

.kb-switch.is-on {
  background: var(--kb-primary);
}

.kb-switch::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  top: 2px;
  left: 2px;
  transition: transform 0.15s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.kb-switch.is-on::after {
  transform: translateX(16px);
}

.kb-table-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  padding: 12px 16px;
  border-top: 1px solid var(--kb-border);
  font-size: 13px;
  color: var(--kb-text-secondary);
}

.kb-page-btn {
  min-width: 28px;
  height: 28px;
  border: 1px solid var(--kb-border);
  background: var(--kb-surface);
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
}

.kb-page-btn.is-current {
  border-color: var(--kb-primary);
  color: var(--kb-primary);
}

/* 设置页 */
.kb-settings-form {
  max-width: 720px;
}

.kb-settings-section {
  margin-bottom: 28px;
}

.kb-settings-section h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}

.kb-type-card {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  max-width: 360px;
}

.kb-type-card.is-selected {
  border-color: var(--kb-primary);
  background: var(--kb-primary-soft);
}

.kb-slider-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.kb-slider-row label {
  flex: 0 0 200px;
  font-size: 14px;
  color: var(--kb-text);
}

.kb-slider-row input[type="range"] {
  flex: 1;
  accent-color: var(--kb-primary);
}

.kb-slider-value {
  width: 48px;
  text-align: center;
  border: 1px solid var(--kb-border);
  border-radius: 6px;
  padding: 6px;
  font-size: 13px;
}

.kb-settings-footer {
  display: flex;
  justify-content: flex-end;
  padding-top: 8px;
}

.kb-back-list {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--kb-text-secondary);
  text-decoration: none;
  margin-bottom: 12px;
}

.kb-back-list:hover {
  color: var(--kb-primary);
}

/* 命中测试 / 问题 占位 */
.kb-placeholder-view {
  padding: 40px;
  text-align: center;
  color: var(--kb-text-muted);
  font-size: 14px;
  line-height: 1.6;
}

.kb-hit-test-box {
  max-width: 640px;
  margin: 0 auto;
  text-align: left;
}

.kb-hit-test-box textarea {
  width: 100%;
  min-height: 100px;
  border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius);
  padding: 12px;
  font-family: inherit;
  font-size: 14px;
  margin-bottom: 12px;
}

.kb-hit-results {
  margin-top: 20px;
  border-top: 1px solid var(--kb-border);
  padding-top: 16px;
}

.kb-hit-chunk {
  background: #fafbfc;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  padding: 12px 14px;
  margin-bottom: 10px;
  font-size: 13px;
  line-height: 1.55;
}

.kb-hit-chunk meta {
  display: block;
  font-size: 12px;
  color: var(--kb-text-muted);
  margin-bottom: 6px;
}

/* 上传隐藏 input */
.kb-hidden-input {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}

.page-nav[data-prototype-project="kbase"] .nav-brand i {
  color: #3370ff;
}

.page-nav[data-prototype-project="kbase"] .nav-link.active {
  background: rgba(51, 112, 255, 0.35);
}

.demo-layout.kb-outer-layout .demo-main,
.demo-layout.kb-outer-layout .kbase-main {
  padding: 0;
  align-items: stretch;
  justify-content: stretch;
  background: var(--kb-bg);
}

.demo-layout.kb-outer-layout {
  overflow: hidden;
}

.rag-kb-root {
  width: 100%;
  height: 100%;
}

/* —— 工作区 · 图1 布局 —— */
.kb-ws-page {
  height: 100%;
  overflow: hidden;
}

.kb-ws-shell {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  background: var(--kb-bg);
}

.kb-ws-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 16px;
  min-height: 0;
  background: var(--kb-surface);
  border-bottom: 1px solid var(--kb-border);
  flex-shrink: 0;
  flex-wrap: nowrap;
}

.kb-ws-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.kb-ws-back {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--kb-text-secondary);
  text-decoration: none;
}

.kb-ws-back:hover {
  background: #f5f6f8;
  color: var(--kb-text);
}

.kb-ws-kb-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--kb-primary-soft);
  color: var(--kb-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.kb-ws-kb-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 240px;
}

.kb-ws-header-stats {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0;
  flex: 0 0 auto;
  flex-wrap: nowrap;
  margin-left: auto;
  padding-right: 8px;
}

.kb-ws-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 2px 14px;
  position: relative;
}

.kb-ws-stat:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 18%;
  height: 64%;
  width: 1px;
  background: var(--kb-border);
}

.kb-ws-stat-label {
  font-size: 12px;
  color: var(--kb-text-muted);
}

.kb-ws-stat-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.kb-ws-stat-num {
  font-size: 16px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.kb-ws-stat-icon {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

.kb-ws-stat-icon--q { background: rgba(114, 46, 209, 0.12); color: #722ed1; }
.kb-ws-stat-icon--chunk { background: rgba(255, 149, 0, 0.15); color: #ff9500; }
.kb-ws-stat-icon--doc { background: rgba(52, 199, 89, 0.15); color: #34c759; }
.kb-ws-stat-icon--proc { background: rgba(51, 112, 255, 0.12); color: #4e83fd; }
.kb-ws-stat-icon--fail { background: rgba(245, 74, 69, 0.12); color: var(--kb-danger); }

.kb-ws-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.kb-btn-retrieval {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 14px;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  background: var(--kb-surface);
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  color: var(--kb-text);
}

.kb-btn-retrieval:hover {
  border-color: var(--kb-primary);
  color: var(--kb-primary);
}

.kb-btn-ghost-sm {
  width: 34px;
  height: 34px;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  background: var(--kb-surface);
  cursor: pointer;
  color: var(--kb-text-secondary);
}

.kb-ws-panel {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.kb-ws-panel[hidden] {
  display: none !important;
}

.kb-ws-tabs {
  display: flex;
  align-items: flex-end;
  gap: 28px;
  padding: 0 20px;
  background: var(--kb-bg);
  flex-shrink: 0;
}

.kb-ws-tab {
  position: relative;
  padding: 12px 4px 14px;
  font-size: 14px;
  color: var(--kb-text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: color 0.15s;
}

.kb-ws-tab:hover {
  color: var(--kb-text);
}

.kb-ws-tab.is-active {
  color: var(--kb-primary);
  font-weight: 500;
}

.kb-ws-tab.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--kb-primary);
  border-radius: 2px 2px 0 0;
}

.kb-ws-docs-layout {
  flex: 1;
  display: flex;
  gap: 16px;
  min-height: 0;
  overflow: hidden;
  padding: 16px 20px 20px;
  background: var(--kb-bg);
}

.kb-dataset-card,
.kb-docs-card {
  background: var(--kb-surface);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-lg);
  box-shadow: var(--kb-shadow);
  min-height: 0;
}

.kb-dataset-card {
  width: 252px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  padding: 16px 14px 14px;
}

.kb-dataset-aside {
  width: 220px;
  flex-shrink: 0;
  background: var(--kb-surface);
  border-right: 1px solid var(--kb-border);
  display: flex;
  flex-direction: column;
  padding: 12px 10px;
}

.kb-dataset-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2px 6px 14px;
  margin-bottom: 4px;
  border-bottom: 1px solid #f0f1f3;
  font-size: 13px;
  font-weight: 600;
  color: var(--kb-text);
  letter-spacing: 0.01em;
}

.kb-dataset-title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.kb-dataset-help {
  width: 18px;
  height: 18px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--kb-text-muted);
  cursor: pointer;
  font-size: 13px;
  line-height: 1;
}

.kb-dataset-title i {
  margin-right: 6px;
  color: var(--kb-text-muted);
}

.kb-dataset-add {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  color: var(--kb-text-secondary);
}

.kb-dataset-add:hover {
  background: #f5f6f8;
}

.kb-dataset-list {
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 2px 0 4px;
}

.kb-dataset-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 11px 12px;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.kb-dataset-item:hover:not(.is-active) {
  background: #f7f8fa;
}

.kb-dataset-item.is-active {
  background: #eef3ff;
  border-color: rgba(51, 112, 255, 0.22);
  box-shadow: 0 1px 2px rgba(51, 112, 255, 0.06);
}

.kb-dataset-item-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: #f2f3f5;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #8f959e;
  flex-shrink: 0;
  font-size: 15px;
}

.kb-dataset-item.is-active .kb-dataset-item-icon {
  background: #fff;
  color: var(--kb-primary);
  box-shadow: 0 0 0 1px rgba(51, 112, 255, 0.12);
}

.kb-dataset-item-body {
  min-width: 0;
  flex: 1;
}

.kb-dataset-item-line {
  display: flex;
  align-items: baseline;
  flex-wrap: nowrap;
  gap: 6px;
  min-width: 0;
  line-height: 1.45;
}

.kb-dataset-item-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--kb-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-shrink: 1;
  min-width: 0;
}

.kb-dataset-item.is-active .kb-dataset-item-name {
  color: #1a3a8f;
}

.kb-dataset-item-sep {
  flex-shrink: 0;
  font-size: 12px;
  color: #c9cdd4;
  font-weight: 400;
  line-height: 1;
}

.kb-dataset-item-meta {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 400;
  color: var(--kb-text-muted);
  white-space: nowrap;
}

.kb-docs-card {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.kb-docs-card-top {
  flex-shrink: 0;
  padding: 16px 18px 0;
}

.kb-docs-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 0;
}

.kb-docs-card-head-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  flex: 0 1 auto;
}

.kb-docs-section-title {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--kb-text);
  white-space: nowrap;
  flex-shrink: 0;
  line-height: 36px;
}

.kb-docs-card-head-left .kb-ws-search {
  flex: 0 1 280px;
  width: min(280px, 100%);
  max-width: 100%;
  margin-bottom: 0;
}

.kb-docs-card-head .kb-doc-toolbar--card {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  padding: 0;
  margin: 0;
}

.kb-docs-card-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  margin: 0;
  overflow: hidden;
  border-top: 1px solid var(--kb-border);
}

.kb-docs-card-body .kb-table-wrap {
  flex: 1;
  min-height: 0;
}

.kb-docs-card-body .kb-table-footer {
  flex-shrink: 0;
  background: #fafbfc;
}

.kb-docs-card-top + .kb-docs-card-body {
  margin-top: 12px;
}

.kb-docs-card-top:has(.kb-upload-zone:not([hidden])) + .kb-docs-card-body {
  margin-top: 8px;
}

.kb-ws-docs-main {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
  padding: 16px 20px 24px;
}

.kb-ws-search-row {
  margin-bottom: 12px;
}

.kb-ws-search {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 280px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  background: var(--kb-surface);
}

.kb-ws-search input {
  border: none;
  flex: 1;
  font-size: 13px;
  outline: none;
  font-family: inherit;
}

.kb-ws-search i {
  color: var(--kb-text-muted);
  font-size: 13px;
}

.kb-upload-zone {
  border: 2px dashed #c9cdd4;
  border-radius: var(--kb-radius-lg);
  background: #fafbfc;
  margin-bottom: 8px;
  transition: border-color 0.15s, background 0.15s;
}

.kb-upload-zone.is-dragover {
  border-color: var(--kb-primary);
  background: var(--kb-primary-soft);
}

.kb-upload-zone.is-collapsed {
  display: none;
}

.kb-upload-inner {
  padding: 36px 24px;
  text-align: center;
  cursor: pointer;
}

.kb-upload-icon {
  font-size: 36px;
  color: #c9cdd4;
  margin-bottom: 12px;
}

.kb-upload-title {
  font-size: 14px;
  color: var(--kb-text);
  margin-bottom: 8px;
}

.kb-upload-hint {
  font-size: 12px;
  color: var(--kb-text-muted);
}

.kb-upload-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.kb-upload-collapse {
  border: none;
  background: transparent;
  color: var(--kb-text-muted);
  cursor: pointer;
  padding: 4px 12px;
  font-size: 12px;
}

.kb-doc-section-title {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 12px;
}

.kb-doc-section .kb-doc-toolbar {
  border: none;
  padding: 0 0 12px;
  justify-content: flex-start;
}

.kb-doc-toolbar--card {
  border: none;
  padding: 0;
  justify-content: flex-start;
}

.kb-btn-sm.kb-btn-icon {
  width: 32px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.kb-doc-name-cell {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 320px;
}

.kb-doc-name-cell .kb-doc-name-edit-btn {
  width: 26px;
  height: 26px;
  border: none;
  background: transparent;
  border-radius: 6px;
  color: var(--kb-text-muted);
  cursor: pointer;
  opacity: 0;
  flex-shrink: 0;
  transition: opacity 0.12s, background 0.12s, color 0.12s;
}

.kb-doc-name-cell:hover .kb-doc-name-edit-btn,
.kb-doc-name-cell:focus-within .kb-doc-name-edit-btn {
  opacity: 1;
}

.kb-doc-name-edit-btn:hover {
  background: #f0f1f3;
  color: var(--kb-primary);
}

.kb-doc-name-edit-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
}

.kb-doc-inline-field {
  position: relative;
  flex: 1;
  min-width: 160px;
  max-width: 280px;
}

.kb-doc-inline-input {
  width: 100%;
  height: 32px;
  padding: 0 32px 0 10px;
  border: 1px solid var(--kb-primary);
  border-radius: 8px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  box-shadow: 0 0 0 2px var(--kb-primary-soft);
}

.kb-doc-inline-clear {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border: none;
  background: transparent;
  color: #c0c4cc;
  cursor: pointer;
  padding: 0;
  font-size: 14px;
  line-height: 1;
}

.kb-doc-inline-clear:hover {
  color: var(--kb-text-secondary);
}

.kb-doc-inline-ok,
.kb-doc-inline-cancel {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  flex-shrink: 0;
  font-size: 15px;
}

.kb-doc-inline-ok {
  color: var(--kb-primary);
}

.kb-doc-inline-ok:hover {
  background: var(--kb-primary-soft);
}

.kb-doc-inline-cancel {
  color: var(--kb-text);
}

.kb-doc-inline-cancel:hover {
  background: #f0f1f3;
}

.kb-doc-more-wrap {
  position: relative;
  display: inline-flex;
}

.kb-doc-more-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  min-width: 168px;
  background: var(--kb-surface);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  box-shadow: 0 8px 24px rgba(31, 35, 41, 0.12);
  padding: 6px;
  z-index: 120;
}

.kb-doc-more-wrap.is-open .kb-doc-more-menu {
  display: block;
}

.kb-doc-more-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  background: transparent;
  border-radius: 6px;
  font-size: 13px;
  color: var(--kb-text);
  cursor: pointer;
  font-family: inherit;
  text-align: left;
}

.kb-doc-more-item i {
  width: 16px;
  text-align: center;
  color: var(--kb-text-secondary);
  font-size: 14px;
}

.kb-doc-more-item:hover {
  background: #f5f6f8;
}

.kb-doc-more-item.is-danger {
  color: var(--kb-danger);
}

.kb-doc-more-item.is-danger i {
  color: var(--kb-danger);
}

.kb-doc-row-new td {
  background: #fafbfc;
}

.kb-doc-file-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: #f0f1f3;
  color: var(--kb-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}

.kb-doc-name-text,
.kb-doc-name-link {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kb-doc-name-link {
  color: var(--kb-text);
  text-decoration: none;
  flex: 1;
  min-width: 0;
}

.kb-doc-name-link:hover {
  color: var(--kb-primary);
}

.kb-row-actions {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.kb-row-action {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  border-radius: 6px;
  color: var(--kb-text-secondary);
  cursor: pointer;
  font-size: 14px;
}

.kb-row-action:hover {
  background: #f0f1f3;
  color: var(--kb-primary);
}

.kb-row-action--danger:hover {
  color: var(--kb-danger);
}

.kb-panel--flat {
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-lg);
}

/* 问题列表：与文档列表同宽全屏卡片，勿使用窄栏 .kb-questions-card */
.kb-ws-questions-layout {
  flex: 1;
  min-height: 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.kb-ws-questions-layout .kb-docs-card,
.kb-questions-card-full {
  flex: 1;
  min-height: 0;
  min-width: 0;
  max-width: none;
  width: 100%;
}

.kb-table--questions .kb-q-text-cell {
  line-height: 1.55;
  word-break: break-word;
  white-space: normal;
  color: var(--kb-text);
}

.kb-table--questions .kb-td-actions {
  white-space: nowrap;
}

.kb-btn-link {
  display: inline;
  padding: 0;
  margin: 0;
  border: none;
  background: none;
  font-family: inherit;
  font-size: 13px;
  color: var(--kb-primary);
  cursor: pointer;
  line-height: 1.4;
}

.kb-btn-link:hover {
  text-decoration: underline;
}

.kb-btn-link.is-danger {
  color: var(--kb-danger);
}

.kb-btn-link + .kb-btn-link {
  margin-left: 12px;
}

.kb-upload-zone--inline {
  margin-bottom: 12px;
}

.kb-tag-success {
  display: inline-block;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  background: #e8f5e9;
  color: #2e7d32;
}

.kb-tag-muted {
  font-size: 13px;
  color: var(--kb-text-muted);
}

.kb-td-enable {
  text-align: center;
  vertical-align: middle;
}

.kb-td-enable .kb-switch {
  vertical-align: middle;
}

.kb-table--docs td {
  font-size: 13px;
}

.kb-page-size {
  border: 1px solid var(--kb-border);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 13px;
  font-family: inherit;
}

.kb-ws-simple-main {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}

/* —— 上传文档弹窗 —— */
.kb-upload-modal-backdrop {
  z-index: 600;
}

.kb-upload-modal {
  width: min(720px, calc(100vw - 32px));
  max-height: min(90vh, 820px);
  display: flex;
  flex-direction: column;
  background: var(--kb-surface);
  border-radius: var(--kb-radius-lg);
  box-shadow: 0 20px 56px rgba(31, 35, 41, 0.18);
  overflow: hidden;
}

.kb-upload-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 12px;
  flex-shrink: 0;
}

.kb-upload-modal-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--kb-text);
}

.kb-upload-modal-title-bar {
  width: 3px;
  height: 16px;
  border-radius: 2px;
  background: var(--kb-primary);
  flex-shrink: 0;
}

.kb-upload-modal-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 20px 14px;
  flex-shrink: 0;
}

.kb-upload-modal-tab {
  height: 32px;
  padding: 0 14px;
  border: 1px solid var(--kb-border);
  border-radius: 6px;
  background: var(--kb-surface);
  font-size: 13px;
  color: var(--kb-text-secondary);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.kb-upload-modal-tab:hover {
  border-color: var(--kb-border-strong);
  color: var(--kb-text);
}

.kb-upload-modal-tab.is-active {
  background: var(--kb-primary-soft);
  border-color: rgba(51, 112, 255, 0.35);
  color: var(--kb-primary);
  font-weight: 500;
}

.kb-upload-modal-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 0 20px 16px;
}

.kb-upload-info {
  background: #f0f6ff;
  border: 1px solid #d6e4ff;
  border-radius: var(--kb-radius);
  padding: 12px 14px;
  margin-bottom: 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--kb-text-secondary);
}

.kb-upload-info p {
  margin: 0 0 6px;
}

.kb-upload-info p:last-child {
  margin-bottom: 0;
}

.kb-upload-info-num {
  color: var(--kb-text);
  font-weight: 500;
}

.kb-upload-link {
  border: none;
  background: none;
  padding: 0;
  margin: 0 4px;
  font-size: inherit;
  font-family: inherit;
  color: var(--kb-primary);
  cursor: pointer;
  text-decoration: none;
}

.kb-upload-link:hover {
  text-decoration: underline;
}

.kb-upload-drop {
  border: 1px dashed #c9cdd4;
  border-radius: var(--kb-radius-lg);
  background: #fafbfc;
  padding: 40px 24px 28px;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}

.kb-upload-drop.is-dragover {
  border-color: var(--kb-primary);
  background: var(--kb-primary-soft);
}

.kb-upload-drop-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 12px;
  background: rgba(51, 112, 255, 0.1);
  color: var(--kb-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}

.kb-upload-drop-text {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--kb-text);
  line-height: 1.5;
}

.kb-upload-drop-formats {
  margin: 0;
  font-size: 12px;
  color: var(--kb-text-muted);
}

.kb-upload-queue {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-height: 220px;
  overflow-y: auto;
}

.kb-upload-queue-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 10px 12px 10px;
  font-size: 13px;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  background: #fafbfc;
}

.kb-upload-queue-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--kb-text);
  padding-right: 22px;
  font-weight: 500;
}

.kb-upload-queue-size {
  color: var(--kb-text-muted);
  font-size: 12px;
}

.kb-upload-queue-remove {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  border: none;
  background: transparent;
  border-radius: 6px;
  color: var(--kb-text-muted);
  cursor: pointer;
  flex-shrink: 0;
}

.kb-upload-queue-remove:hover {
  background: #f0f1f3;
  color: var(--kb-danger);
}

.kb-upload-modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 14px 20px 18px;
  border-top: 1px solid var(--kb-border);
  flex-shrink: 0;
  background: var(--kb-surface);
}

/* —— 列表卡片更多菜单（fixed 向下展开） —— */
.kb-card-more-menu.is-open {
  display: block;
}

.kb-card-more-menu.is-open-up::after {
  top: auto;
  bottom: -6px;
  border-left: none;
  border-top: none;
  border-right: 1px solid var(--kb-border);
  border-bottom: 1px solid var(--kb-border);
}

.kb-modal--wide {
  width: min(560px, 100%);
}

.kb-modal--slice-edit {
  width: min(720px, 100%);
}

.kb-alert-info {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  margin-bottom: 16px;
  background: #e8f3ff;
  border: 1px solid #bedaff;
  border-radius: var(--kb-radius);
  font-size: 13px;
  line-height: 1.6;
  color: var(--kb-text-secondary);
}

.kb-alert-info i {
  color: var(--kb-primary);
  margin-top: 2px;
  flex-shrink: 0;
}

.kb-alert-info p {
  margin: 0;
}

.kb-alert-info-list {
  margin: 0;
  padding-left: 1.1em;
}

.kb-alert-info-list li {
  margin: 0;
}

.kb-alert-info-list li + li {
  margin-top: 4px;
}

.kb-gen-q-model-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.kb-gen-q-model-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
  color: #fff;
  flex-shrink: 0;
  font-size: 14px;
}

.kb-select-wrap--model {
  flex: 1;
}

.kb-stepper {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius);
  overflow: hidden;
}

.kb-stepper button {
  width: 36px;
  height: 36px;
  border: none;
  background: #fafbfc;
  cursor: pointer;
  font-size: 18px;
  color: var(--kb-text-secondary);
}

.kb-stepper button:hover {
  background: #f0f1f3;
}

.kb-stepper input {
  width: 48px;
  height: 36px;
  border: none;
  border-left: 1px solid var(--kb-border);
  border-right: 1px solid var(--kb-border);
  text-align: center;
  font-size: 14px;
  font-family: inherit;
}

.kb-radio-group--inline {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 20px;
}

.kb-settings-type-hint {
  font-size: 12px;
  color: #8f959e;
  margin-top: 4px;
}

/* —— 检索测试沙箱弹窗 —— */
.kb-hit-sandbox-backdrop .kb-hit-sandbox-modal {
  width: min(960px, calc(100vw - 32px));
  max-height: calc(100vh - 40px);
  background: var(--kb-surface);
  border-radius: var(--kb-radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(31, 35, 41, 0.15);
}

.kb-hit-sandbox-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--kb-border);
  flex-shrink: 0;
}

.kb-hit-sandbox-head h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.kb-hit-sandbox-head-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.kb-hit-sandbox-search {
  display: flex;
  gap: 10px;
  padding: 16px 20px;
  flex-shrink: 0;
}

.kb-hit-sandbox-search input {
  flex: 1;
  height: 40px;
  border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius);
  padding: 0 14px;
  font-size: 14px;
  font-family: inherit;
}

.kb-hit-sandbox-config {
  padding: 0 20px 12px;
  flex-shrink: 0;
}

.kb-hit-sandbox-config h4 {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--kb-text);
}

.kb-hit-config-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 20px;
}

.kb-hit-config-item label {
  display: block;
  font-size: 13px;
  color: var(--kb-text-secondary);
  margin-bottom: 6px;
}

.kb-hit-config-item--wide {
  grid-column: 1 / -1;
}

.kb-hit-kb-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: #f5f6f8;
  border: 1px solid var(--kb-border);
  border-radius: 6px;
  font-size: 13px;
}

.kb-hit-dataset-placeholder {
  height: 36px;
  border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius);
  padding: 0 12px;
  display: flex;
  align-items: center;
  font-size: 13px;
  color: var(--kb-text-muted);
  background: var(--kb-surface);
}

.kb-hit-slider-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.kb-hit-slider-row input[type="range"] {
  flex: 1;
}

.kb-hit-slider-val {
  width: 40px;
  text-align: center;
  border: 1px solid var(--kb-border);
  border-radius: 6px;
  height: 32px;
  font-size: 13px;
}

.kb-hit-step {
  width: 28px;
  height: 28px;
  border: 1px solid var(--kb-border);
  border-radius: 6px;
  background: var(--kb-surface);
  cursor: pointer;
  font-size: 14px;
}

.kb-hit-mode-group {
  display: inline-flex;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  overflow: hidden;
}

.kb-hit-mode-btn {
  height: 32px;
  padding: 0 14px;
  border: none;
  background: var(--kb-surface);
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  color: var(--kb-text-secondary);
}

.kb-hit-mode-btn.is-active {
  color: var(--kb-primary);
  background: var(--kb-primary-soft);
  box-shadow: inset 0 0 0 1px rgba(51, 112, 255, 0.35);
}

.kb-hit-sandbox-results-wrap {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 0 20px 20px;
  overflow: hidden;
}

.kb-hit-sandbox-results-wrap h4 {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 600;
}

.kb-hit-sandbox-results {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.kb-hit-result-card {
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  padding: 14px 16px;
  background: #fafbfc;
}

.kb-hit-result-top {
  display: flex;
  gap: 12px;
  margin-bottom: 10px;
}

.kb-hit-result-idx {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--kb-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.kb-hit-result-head {
  flex: 1;
  min-width: 0;
}

.kb-hit-result-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}

.kb-hit-result-title-row h5 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
}

.kb-hit-result-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex-shrink: 0;
}

.kb-hit-result-tag {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
}

.kb-hit-tag--q {
  background: #fff7e8;
  color: #d46b08;
}

.kb-hit-tag--full {
  background: #e8f3ff;
  color: var(--kb-primary);
}

.kb-hit-tag--title {
  background: #e8ffea;
  color: #389e0d;
}

.kb-hit-tag--chunk {
  background: #f0f1f3;
  color: var(--kb-text-secondary);
}

.kb-hit-result-metrics {
  display: flex;
  gap: 10px;
  font-size: 12px;
}

.kb-hit-score {
  color: #2ba471;
  font-weight: 600;
}

.kb-hit-rerank {
  color: var(--kb-primary);
}

.kb-hit-result-snippet {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--kb-text-secondary);
}

.kb-hit-result-source {
  font-size: 12px;
  color: var(--kb-text-muted);
}

.kb-hit-result-source i {
  margin-right: 4px;
}

.kb-hit-related {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--kb-border);
}

.kb-hit-related-title {
  font-size: 12px;
  color: var(--kb-text-muted);
  margin-bottom: 8px;
}

.kb-hit-related ul {
  margin: 0;
  padding-left: 18px;
  font-size: 13px;
  color: var(--kb-text-secondary);
  line-height: 1.6;
}

/* —— 网页链接 / 切片编辑 —— */
.kb-weblink-tabs {
  display: flex;
  gap: 24px;
  padding: 0 20px;
  border-bottom: 1px solid var(--kb-border);
}

.kb-weblink-body {
  padding-top: 16px;
  min-height: 220px;
}

.kb-weblink-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.kb-weblink-panel[hidden] {
  display: none !important;
}

.kb-field--flush {
  margin-bottom: 0;
}

.kb-weblink-batch-hint {
  margin: 0;
  font-size: 13px;
  color: var(--kb-text-muted);
  line-height: 1.5;
}

.kb-weblink-batch-textarea {
  display: block;
  width: 100%;
  box-sizing: border-box;
  min-height: 220px;
  border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius);
  padding: 10px 12px;
  font-size: 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  line-height: 1.55;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.kb-weblink-batch-textarea:focus {
  border-color: var(--kb-primary);
  box-shadow: 0 0 0 2px var(--kb-primary-soft);
}

.kb-weblink-tab {
  border: none;
  background: none;
  padding: 12px 0;
  font-size: 14px;
  color: var(--kb-text-muted);
  cursor: pointer;
  font-family: inherit;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.kb-weblink-tab.is-active {
  color: var(--kb-primary);
  border-bottom-color: var(--kb-primary);
  font-weight: 500;
}

.kb-input-count-wrap {
  position: relative;
}

.kb-input-count-wrap input {
  padding-right: 72px;
}

.kb-input-count {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  color: var(--kb-text-muted);
}

.kb-rich-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border: 1px solid var(--kb-border-strong);
  border-bottom: none;
  border-radius: var(--kb-radius) var(--kb-radius) 0 0;
  background: #fafbfc;
  font-size: 12px;
}

.kb-rich-tb {
  display: flex;
  gap: 8px;
  color: var(--kb-text-secondary);
}

.kb-rich-tb-muted {
  color: var(--kb-text-muted);
}

.kb-rich-textarea {
  border-radius: 0 0 var(--kb-radius) var(--kb-radius) !important;
  min-height: 280px !important;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
}

.kb-rich-count {
  font-size: 12px;
  color: var(--kb-text-muted);
  margin-top: 6px;
}

/* —— 上传 · 切片预览步骤 —— */
.kb-upload-slice-step {
  min-height: 360px;
}

.kb-upload-slice-layout {
  display: grid;
  grid-template-columns: minmax(400px, 480px) 1fr;
  gap: 20px;
  min-height: 360px;
  align-items: stretch;
}

.kb-upload-slice-rules {
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  padding: 16px;
  background: var(--kb-surface);
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 0;
}

.kb-upload-slice-heading {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 600;
}

.kb-upload-rule-opt {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  font-size: 13px;
  cursor: pointer;
}

.kb-upload-rule-opt small {
  display: block;
  color: var(--kb-text-muted);
  font-weight: normal;
  margin-top: 4px;
}

.kb-upload-rule-check {
  font-size: 12px;
  color: var(--kb-text-secondary);
  line-height: 1.5;
}

.kb-slice-rule-cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  min-height: 0;
}

.kb-slice-rule-card {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  background: var(--kb-surface);
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.kb-slice-rule-card.is-selected {
  border-color: var(--kb-primary);
  box-shadow: inset 0 0 0 1px var(--kb-primary);
}

.kb-slice-rule-card--head {
  border: none;
  border-radius: 0;
  padding: 0 0 0 2px;
  background: transparent;
  box-shadow: none;
}

.kb-slice-rule-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  background: var(--kb-surface);
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.kb-slice-rule-group.is-selected {
  border-color: var(--kb-primary);
  box-shadow: inset 0 0 0 1px var(--kb-primary);
}

.kb-slice-rule-group.is-selected .kb-slice-rule-card--head .kb-slice-rule-radio {
  border-color: var(--kb-primary);
}

.kb-slice-rule-group.is-selected .kb-slice-rule-card--head .kb-slice-rule-radio::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--kb-primary);
}

.kb-slice-rule-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.kb-slice-rule-radio {
  width: 16px;
  height: 16px;
  margin-top: 3px;
  border: 2px solid #c0c4cc;
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}

.kb-slice-rule-card.is-selected .kb-slice-rule-radio {
  border-color: var(--kb-primary);
}

.kb-slice-rule-card.is-selected .kb-slice-rule-radio::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--kb-primary);
}

.kb-slice-rule-body {
  flex: 1;
  min-width: 0;
  font-size: 13px;
  line-height: 1.5;
}

.kb-slice-rule-body strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--kb-text);
}

.kb-slice-rule-body small {
  display: block;
  color: var(--kb-text-muted);
  font-weight: normal;
  font-size: 12px;
  line-height: 1.5;
}

.kb-slice-advanced-panel {
  padding: 0 0 0 26px;
  cursor: default;
}

.kb-slice-advanced-inner {
  padding: 14px;
  border-radius: var(--kb-radius);
  background: #f4f5f7;
}

.kb-field--compact {
  margin-bottom: 14px;
}

.kb-field--compact:last-child {
  margin-bottom: 0;
}

.kb-slice-advanced-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--kb-text);
  margin-bottom: 8px;
}

.kb-field--compact > .kb-slice-advanced-label {
  display: flex;
}

.kb-slice-advanced-tip {
  width: 18px;
  height: 18px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--kb-text-muted);
  cursor: help;
  font-size: 14px;
  line-height: 1;
}

.kb-slice-advanced-inner .kb-select-wrap select {
  width: 100%;
}

.kb-slice-advanced-slider {
  display: flex;
  align-items: center;
  gap: 12px;
}

.kb-slice-advanced-slider input[type="range"] {
  flex: 1;
  min-width: 0;
  accent-color: var(--kb-primary);
}

.kb-slice-advanced-slider .kb-slider-value {
  flex-shrink: 0;
  width: 56px;
  background: var(--kb-surface);
}

.kb-slice-advanced-switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.kb-slice-advanced-field--switch .kb-slice-advanced-label {
  margin-bottom: 0;
}

.kb-slice-advanced-hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--kb-text-muted);
  line-height: 1.5;
}

.kb-slice-rules-foot {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--kb-border);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.kb-slice-gen-preview-btn {
  width: 100%;
  justify-content: center;
}

.kb-upload-slice-preview {
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.kb-upload-slice-preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--kb-border);
  background: var(--kb-surface);
}

.kb-upload-slice-preview-head::before {
  content: "切片预览";
  font-weight: 600;
  font-size: 14px;
  margin-right: auto;
}

.kb-upload-slice-file-tag {
  font-size: 12px;
  padding: 2px 8px;
  background: var(--kb-primary-soft);
  color: var(--kb-primary);
  border-radius: 4px;
  margin-right: 10px;
}

.kb-upload-slice-count {
  font-size: 13px;
  color: var(--kb-text-muted);
}

.kb-upload-slice-cards {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 420px;
}

.kb-upload-slice-card {
  position: relative;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  background: var(--kb-surface);
  padding: 12px 40px 12px 12px;
}

.kb-upload-slice-card-actions {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 4px;
}

.kb-upload-slice-card-body {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 120px;
  overflow: hidden;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--kb-text-secondary);
}

.kb-upload-slice-card-foot {
  margin-top: 8px;
  font-size: 12px;
  color: var(--kb-text-muted);
  text-align: right;
}

/* —— 上传 · 切片预览（独立页面）—— */
.kb-upload-slice-main-wrap {
  padding: 0 !important;
  align-items: stretch !important;
  justify-content: stretch !important;
}

.kb-upload-slice-page {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  background: var(--kb-bg);
}

.kb-upload-slice-page-head {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  background: var(--kb-surface);
  border-bottom: 1px solid var(--kb-border);
  flex-shrink: 0;
}

.kb-upload-slice-page-head-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.kb-upload-slice-page-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.kb-upload-slice-page-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 20px 24px;
}

.kb-upload-slice-layout--page {
  min-height: calc(100vh - 200px);
  grid-template-columns: minmax(400px, 480px) 1fr;
}

.kb-upload-slice-preview--page {
  min-height: 480px;
}

.kb-upload-slice-cards--page {
  max-height: none;
  flex: 1;
  min-height: 360px;
}

.kb-upload-slice-page-foot {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 14px 24px;
  background: var(--kb-surface);
  border-top: 1px solid var(--kb-border);
  flex-shrink: 0;
}

/* —— 关联分段弹窗 —— */
.kb-modal.kb-modal--link-slices {
  width: min(1120px, calc(100vw - 48px));
  max-height: min(90vh, 820px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.kb-link-slices-body {
  display: grid;
  grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
  gap: 0;
  padding: 0 !important;
  flex: 1;
  min-height: 480px;
  overflow: hidden;
}

.kb-link-slices-col {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  padding: 16px 18px;
  border-right: 1px solid var(--kb-border);
}

.kb-link-slices-col--docs {
  background: #fafbfc;
}

.kb-link-slices-col--segs {
  border-right: none;
  padding: 16px 20px 18px;
}

.kb-link-slices-col-title {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--kb-text);
}

.kb-link-slices-picked {
  font-weight: 400;
  color: var(--kb-text-muted);
  font-size: 13px;
}

.kb-link-slices-search {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  background: #fafbfc;
  margin-bottom: 12px;
}

.kb-link-slices-search input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 13px;
  outline: none;
  font-family: inherit;
  min-width: 0;
}

.kb-link-slices-search i {
  color: var(--kb-text-muted);
  font-size: 13px;
}

.kb-link-slices-seg-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.kb-link-slices-seg-head .kb-link-slices-col-title {
  margin-bottom: 0;
  flex: 1;
  min-width: 180px;
}

.kb-link-slices-seg-filters {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.kb-link-slices-seg-filters select {
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--kb-border);
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  background: var(--kb-surface);
}

.kb-link-slices-search--sm {
  width: 180px;
  flex: 0 0 auto;
  margin-bottom: 0;
}

.kb-link-slices-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  background: var(--kb-surface);
}

.kb-link-slices-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 16px;
  color: var(--kb-text-muted);
  font-size: 13px;
  min-height: 280px;
}

.kb-link-slices-empty-icon {
  width: 80px;
  height: 64px;
  margin-bottom: 12px;
  opacity: 0.35;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 80 64' fill='none'%3E%3Cpath d='M12 20h24v8H12zM44 28h24v8H44zM12 36h24v8H12z' fill='%23c9cdd4'/%3E%3Cpath d='M8 12h32l8 8v36H8V12z' stroke='%23c9cdd4' stroke-width='2'/%3E%3Cpath d='M40 20h32v36H40V20z' stroke='%23c9cdd4' stroke-width='2'/%3E%3C/svg%3E") center/contain no-repeat;
}

.kb-link-slices-doc-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  border-bottom: 1px solid #f0f1f3;
  background: transparent;
  text-align: left;
  font-size: 13px;
  font-family: inherit;
  color: var(--kb-text);
  cursor: pointer;
}

.kb-link-slices-doc-item:last-child {
  border-bottom: none;
}

.kb-link-slices-doc-item:hover {
  background: #fafbfc;
}

.kb-link-slices-doc-item.is-active {
  background: var(--kb-primary-soft);
  color: var(--kb-primary);
}

.kb-link-slices-doc-item i {
  color: var(--kb-primary);
  flex-shrink: 0;
}

.kb-link-slices-doc-item span {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kb-link-slices-seg-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid #f0f1f3;
  font-size: 13px;
  cursor: pointer;
}

.kb-link-slices-seg-item:last-child {
  border-bottom: none;
}

.kb-link-slices-seg-item:hover {
  background: #fafbfc;
}

.kb-link-slices-seg-item input {
  margin-top: 3px;
  flex-shrink: 0;
}

.kb-link-slices-seg-body {
  min-width: 0;
  flex: 1;
}

.kb-link-slices-seg-title {
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--kb-text);
}

.kb-link-slices-seg-snippet {
  font-size: 12px;
  color: var(--kb-text-muted);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}