* { box-sizing: border-box; }
html, body { min-width: 0; }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--dd-text);
  background: var(--dd-bg);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}
button, input, select, textarea { font: inherit; }
button, a, input, select, textarea { -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.knowledge-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 224px minmax(0, 1fr);
}
.knowledge-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 18px 14px;
  color: rgba(255,255,255,.86);
  background: var(--dd-sidebar-bg);
}
.knowledge-brand { display: flex; align-items: center; gap: 11px; min-width: 0; padding: 4px 8px; color: #fff; text-decoration: none; }
.knowledge-brand-mark { width: 38px; height: 38px; flex: 0 0 38px; overflow: hidden; border-radius: 8px; }
.knowledge-brand-mark img { width: 100%; height: 100%; object-fit: cover; }
.knowledge-brand strong, .knowledge-brand small { display: block; }
.knowledge-brand strong { font-size: 14px; }
.knowledge-brand small { margin-top: 2px; color: rgba(255,255,255,.55); font-size: 12px; }
.knowledge-nav { display: grid; gap: 6px; }
.knowledge-nav a { display: flex; min-height: 42px; align-items: center; gap: 10px; padding: 0 12px; border-radius: 8px; color: rgba(255,255,255,.7); font-weight: 750; text-decoration: none; }
.knowledge-nav a:hover, .knowledge-nav a.active { color: #fff; background: var(--dd-sidebar-active); }
.knowledge-nav svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.knowledge-user { margin-top: auto; padding: 10px 12px; overflow: hidden; border: 1px solid var(--dd-sidebar-line); border-radius: 8px; color: rgba(255,255,255,.65); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }

.knowledge-main { min-width: 0; width: min(1520px, 100%); margin: 0 auto; padding: 18px 24px 32px; }
.knowledge-topbar { min-height: 48px; display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.knowledge-topbar h1 { margin: 0; font-size: 18px; line-height: 1.2; letter-spacing: 0; }
.knowledge-button, .icon-button, .knowledge-link-button, .knowledge-back { border: 0; cursor: pointer; }
.knowledge-button { min-height: 38px; padding: 0 13px; border: 1px solid var(--dd-line); border-radius: 8px; color: var(--dd-text); background: var(--dd-bg-elevated); font-weight: 750; }
.knowledge-button:hover { border-color: #b9c9c3; background: var(--dd-bg-soft); }
.knowledge-button.primary { border-color: var(--dd-green); color: #fff; background: var(--dd-green); }
.knowledge-button.danger { border-color: rgba(179,66,54,.3); color: var(--dd-red); }
.knowledge-button:disabled { opacity: .45; cursor: default; }
.icon-button { width: 36px; height: 36px; display: inline-grid; place-items: center; flex: 0 0 36px; border: 1px solid var(--dd-line); border-radius: 8px; color: var(--dd-text-muted); background: #fff; font-size: 20px; }

.knowledge-toolbar { position: static; display: grid; grid-template-columns: minmax(260px, 1fr) 190px 160px 160px; gap: 8px; padding: 8px 0 12px; background: var(--dd-bg); }
.knowledge-toolbar input, .knowledge-toolbar select, .knowledge-field input, .knowledge-field select, .knowledge-field textarea, .knowledge-repeater-row input, .knowledge-repeater-row select, .knowledge-repeater-row textarea, .knowledge-feedback select, .knowledge-feedback textarea {
  width: 100%; min-width: 0; min-height: 42px; padding: 0 11px; border: 1px solid var(--dd-line); border-radius: 8px; color: var(--dd-text); background: #fff;
}
.knowledge-toolbar select { min-width: 0; }
.knowledge-search { position: relative; min-width: 0; }
.knowledge-search svg { position: absolute; left: 12px; top: 11px; width: 20px; height: 20px; fill: none; stroke: var(--dd-text-muted); stroke-width: 1.8; pointer-events: none; }
.knowledge-search input { padding-left: 40px; }

.knowledge-workspace { min-width: 0; min-height: calc(100vh - 106px); display: grid; grid-template-columns: minmax(310px, 400px) minmax(0, 1fr); border: 1px solid var(--dd-line); border-radius: 8px; background: var(--dd-bg-elevated); box-shadow: var(--dd-shadow-sm); overflow: hidden; }
.knowledge-list-panel { min-width: 0; border-right: 1px solid var(--dd-line); background: #fff; }
.knowledge-list-meta { height: 44px; display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 0 12px 0 16px; border-bottom: 1px solid var(--dd-line); color: var(--dd-text-muted); font-size: 12px; font-weight: 750; }
.knowledge-list-meta .icon-button { width: 30px; height: 30px; flex-basis: 30px; font-size: 17px; }
.knowledge-list { display: grid; }
.knowledge-list-item { width: 100%; min-width: 0; display: grid; gap: 7px; padding: 14px 16px; border: 0; border-bottom: 1px solid var(--dd-line); color: var(--dd-text); background: #fff; text-align: left; cursor: pointer; }
.knowledge-list-item:hover, .knowledge-list-item.active { background: #f3f8f5; }
.knowledge-list-item.active { box-shadow: inset 3px 0 var(--dd-green); }
.knowledge-list-item strong { overflow-wrap: anywhere; font-size: 14px; line-height: 1.35; }
.knowledge-list-item p { display: -webkit-box; margin: 0; overflow: hidden; color: var(--dd-text-muted); font-size: 12px; line-height: 1.45; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.knowledge-list-row { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.knowledge-badge { display: inline-flex; min-height: 24px; align-items: center; padding: 0 8px; border-radius: 999px; color: #315c4d; background: #e5f2eb; font-size: 11px; font-weight: 750; }
.knowledge-badge.warn { color: #7b5b14; background: #fff1c9; }
.knowledge-badge.muted { color: #596761; background: #edf1ef; }

.knowledge-detail-panel { min-width: 0; background: #fff; }
.knowledge-empty { min-height: 420px; display: grid; place-items: center; color: var(--dd-text-muted); font-size: 14px; }
.knowledge-detail { min-width: 0; }
.knowledge-detail-head { position: static; display: grid; gap: 12px; padding: 18px 20px; border-bottom: 1px solid var(--dd-line); background: #fff; }
.knowledge-detail-title { min-width: 0; }
.knowledge-detail-title h2 { margin: 7px 0 0; overflow-wrap: anywhere; font-size: 22px; line-height: 1.2; }
.knowledge-detail-title p { margin: 6px 0 0; color: var(--dd-text-muted); line-height: 1.5; overflow-wrap: anywhere; }
.knowledge-badges, .knowledge-actions { display: flex; flex-wrap: wrap; gap: 7px; align-items: center; }
.knowledge-back { display: none; width: fit-content; min-height: 36px; padding: 0; color: var(--dd-green); background: transparent; font-weight: 750; }
.knowledge-status { min-height: 18px; color: var(--dd-text-muted); font-size: 12px; }
.knowledge-status.success { color: var(--dd-green); }
.knowledge-status.error { color: var(--dd-red); }
.knowledge-content { display: grid; gap: 0; padding: 4px 20px 24px; }
.knowledge-content-block { min-width: 0; padding: 18px 0; border-bottom: 1px solid var(--dd-line); }
.knowledge-content-block:last-child { border-bottom: 0; }
.knowledge-content-block h3 { margin: 0 0 9px; color: var(--dd-text-muted); font-size: 11px; text-transform: uppercase; letter-spacing: .04em; }
.knowledge-content-block p { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.65; }
.knowledge-content-block a { color: var(--dd-green); overflow-wrap: anywhere; }
.knowledge-meta-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin-top: 10px; background: var(--dd-line); }
.knowledge-meta-item { min-width: 0; padding: 10px 12px; background: #fff; }
.knowledge-meta-item span, .knowledge-meta-item strong { display: block; }
.knowledge-meta-item span { margin-bottom: 4px; color: var(--dd-text-muted); font-size: 11px; }
.knowledge-meta-item strong { overflow-wrap: anywhere; font-size: 13px; }
.knowledge-feedback { margin: 0 20px 24px; padding-top: 14px; border-top: 1px solid var(--dd-line); }
.knowledge-link-button { min-height: 38px; padding: 0; color: var(--dd-green); background: transparent; font-weight: 750; }
.knowledge-feedback form { display: grid; gap: 8px; max-width: 620px; }
.knowledge-feedback textarea { padding: 10px 11px; resize: vertical; }
.knowledge-form-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.knowledge-editor { min-width: 0; }
.knowledge-editor-head { position: static; z-index: 4; display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--dd-line); background: #fff; }
.knowledge-editor-head h2 { margin: 0; font-size: 20px; }
.knowledge-editor-body { position: relative; z-index: 1; display: grid; gap: 24px; padding: 24px 20px 20px; background: #fff; }
.knowledge-form-grid { display: grid; gap: 12px; }
.knowledge-form-grid.two-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.knowledge-field { min-width: 0; display: grid; gap: 6px; }
.knowledge-field.wide { grid-column: 1 / -1; }
.knowledge-field span { color: var(--dd-text-muted); font-size: 12px; font-weight: 750; }
.knowledge-field textarea { padding: 10px 11px; resize: vertical; }
.knowledge-target-picker { min-width: 0; padding: 10px; border: 1px solid var(--dd-line); border-radius: 8px; background: var(--dd-bg-soft); }
.knowledge-target-tools { display: grid; grid-template-columns: minmax(180px, 1fr) auto auto; gap: 8px; margin-bottom: 10px; }
.knowledge-target-tools input { min-height: 38px; }
.knowledge-target-options { max-height: 260px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; overflow-y: auto; padding: 2px; }
.knowledge-target-option { min-width: 0; min-height: 38px; display: flex; align-items: center; gap: 8px; padding: 7px 9px; border: 1px solid var(--dd-line); border-radius: 6px; background: #fff; cursor: pointer; }
.knowledge-target-option:hover { border-color: #b9c9c3; background: #f3f8f5; }
.knowledge-target-option input { width: 17px; height: 17px; flex: 0 0 17px; margin: 0; }
.knowledge-target-option span { min-width: 0; overflow-wrap: anywhere; color: var(--dd-text); font-size: 13px; font-weight: 650; }
.knowledge-target-option.unavailable span { color: var(--dd-text-muted); }
.knowledge-switches { display: flex; flex-wrap: wrap; gap: 18px; }
.knowledge-switches label { display: inline-flex; min-height: 38px; align-items: center; gap: 8px; font-weight: 650; }
.knowledge-switches input { width: 18px; height: 18px; }
.knowledge-editor-section { display: grid; gap: 10px; }
.knowledge-section-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.knowledge-section-head h3 { margin: 0; font-size: 15px; }
.knowledge-repeater { display: grid; gap: 8px; }
.knowledge-repeater-row { min-width: 0; display: grid; gap: 8px; padding: 10px; border: 1px solid var(--dd-line); border-radius: 8px; background: var(--dd-bg-soft); }
.content-row { grid-template-columns: minmax(150px, 190px) minmax(0, 1fr) 36px; align-items: start; }
.content-row .content-url { grid-column: 2; }
.content-row .remove-row { grid-column: 3; grid-row: 1; }
.content-row textarea { min-height: 96px; padding: 10px 11px; resize: vertical; }
.target-row { grid-template-columns: 180px minmax(0, 1fr) 36px; align-items: center; }
.knowledge-editor-actions { position: sticky; bottom: 0; z-index: 4; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 12px 20px; border-top: 1px solid var(--dd-line); background: rgba(255,255,255,.97); }

.knowledge-gate { min-height: 100vh; display: grid; place-items: center; padding: 20px; background: var(--dd-bg); }
.knowledge-gate-card { width: min(420px, 100%); padding: 22px; border: 1px solid var(--dd-line); border-radius: 8px; background: #fff; box-shadow: var(--dd-shadow-sm); }
.knowledge-gate-card strong { font-size: 20px; }
.knowledge-gate-card p { color: var(--dd-text-muted); line-height: 1.5; }
.knowledge-gate-card a { display: inline-flex; align-items: center; text-decoration: none; }

@media (max-width: 980px) {
  .knowledge-shell { grid-template-columns: 74px minmax(0, 1fr); }
  .knowledge-sidebar { padding: 14px 10px; }
  .knowledge-brand { justify-content: center; padding: 0; }
  .knowledge-brand > span:last-child, .knowledge-nav span, .knowledge-user { display: none; }
  .knowledge-nav a { justify-content: center; padding: 0; }
  .knowledge-toolbar { grid-template-columns: minmax(220px, 1fr) 160px 140px; }
  .knowledge-toolbar #statusFilter:not([hidden]) { grid-column: auto; }
  .knowledge-target-options { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .knowledge-shell { display: block; }
  .knowledge-sidebar { position: sticky; top: 0; z-index: 10; width: 100%; height: 54px; flex-direction: row; align-items: center; gap: 8px; padding: 7px 12px; }
  .knowledge-brand { margin-right: auto; }
  .knowledge-brand-mark { width: 36px; height: 36px; flex-basis: 36px; }
  .knowledge-nav { display: flex; }
  .knowledge-nav a { width: 40px; min-height: 40px; }
  .knowledge-main { padding: 10px 12px 24px; }
  .knowledge-topbar { min-height: 46px; margin-bottom: 4px; }
  .knowledge-topbar h1 { font-size: 18px; }
  .knowledge-button { min-height: 44px; }
  .knowledge-toolbar { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); padding-top: 4px; }
  .knowledge-search { grid-column: 1 / -1; }
  .knowledge-toolbar input, .knowledge-toolbar select { min-height: 46px; }
  .knowledge-workspace { min-height: calc(100vh - 190px); display: block; }
  .knowledge-list-panel { border-right: 0; }
  .knowledge-detail-panel { display: none; }
  body.knowledge-detail-open .knowledge-topbar,
  body.knowledge-detail-open .knowledge-toolbar { display: none; }
  body.knowledge-detail-open .knowledge-main { padding-top: 10px; }
  body.knowledge-detail-open .knowledge-workspace { min-height: calc(100vh - 74px); }
  body.knowledge-detail-open .knowledge-list-panel { display: none; }
  body.knowledge-detail-open .knowledge-detail-panel { display: block; }
  .knowledge-detail-head, .knowledge-editor-head { position: static; padding: 14px; }
  .knowledge-back { display: inline-flex; align-items: center; }
  .knowledge-detail-title h2 { font-size: 20px; }
  .knowledge-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .knowledge-actions .knowledge-button { width: 100%; min-width: 0; padding: 0 8px; white-space: normal; }
  .knowledge-content { padding: 2px 14px 18px; }
  .knowledge-feedback { margin: 0 14px 18px; }
  .knowledge-meta-grid { grid-template-columns: 1fr; }
  .knowledge-editor-body { padding: 14px; }
  .knowledge-form-grid.two-columns { grid-template-columns: 1fr; }
  .knowledge-field.wide { grid-column: auto; }
  .knowledge-target-tools { grid-template-columns: 1fr 1fr; }
  .knowledge-target-tools input { grid-column: 1 / -1; }
  .knowledge-target-options { max-height: 320px; grid-template-columns: 1fr; }
  .content-row, .target-row { grid-template-columns: minmax(0, 1fr) 36px; }
  .content-row .content-type, .target-row .target-type { grid-column: 1; }
  .content-row .content-text, .content-row .content-url, .target-row .target-id { grid-column: 1 / -1; }
  .content-row .remove-row, .target-row .remove-row { grid-column: 2; grid-row: 1; }
  .knowledge-editor-actions { padding: 10px 14px; }
  .knowledge-editor-actions .knowledge-status { width: 100%; }
}

@media (max-width: 390px) {
  .knowledge-toolbar { grid-template-columns: 1fr; }
  .knowledge-search { grid-column: auto; }
  .knowledge-actions { grid-template-columns: 1fr; }
}