:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --ink: #111111;
  --muted: #333333;
  --line: #d7dce3;
  --brand: #1F4E79;
  --accent: #2F5D9F;
  --edge: #B5B5B5;

  /* CELL-like scientific palette */
  --cell-blue: #4DBBD5;
  --cell-navy: #3C5488;
  --cell-green: #00A087;
  --cell-orange: #F39B7F;
  --cell-purple: #8491B4;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-14: 14px;
  --space-16: 16px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", sans-serif;
  color: var(--ink);
  background: radial-gradient(900px 600px at -20% -20%, #eaf1fb 0%, transparent 70%), var(--bg);
  line-height: 1.6;
}

.topbar {
  background: var(--brand);
  color: #fff;
  padding: 14px 4vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand { font-size: 28px; font-weight: 800; letter-spacing: 1px; color: #fff; }

.nav { display: flex; gap: 8px; flex-wrap: wrap; }
.nav a {
  color: #fff;
  text-decoration: none;
  border: 1px solid rgba(255,255,255,0.36);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 13px;
}

.page { padding: 14px 4vw 18px; display: grid; gap: 12px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

h1 { margin: 0 0 8px; font-size: 28px; color: var(--ink); }
h2 { margin: 0 0 8px; font-size: 24px; color: var(--ink); }
h3 { margin: 0 0 8px; font-size: 18px; color: var(--ink); }
p, li, td, th, span, div, label { color: var(--ink); }

.muted { color: var(--muted); font-size: 14px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(180px,1fr)); gap: 10px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(160px,1fr)); gap: 10px; }

.btn {
  border: 0;
  border-radius: 8px;
  padding: 9px 12px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.2;
  text-decoration: none;
  display: inline-block;
}
.btn-ghost {
  background: #f0f4fa;
  color: #1f4e79;
  border: 1px solid #c3d2e3;
}

.input, select {
  border: 1px solid #bfc8d4;
  border-radius: 8px;
  padding: 10px;
  font-size: 14px;
  width: 100%;
  background: #fff;
  color: #111;
  min-height: 40px;
}

.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 12px; table-layout: fixed; }
th, td {
  border-bottom: 1px solid #e8edf4;
  padding: 7px 8px;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
  vertical-align: top;
  line-height: 1.45;
  color: #111;
}
th { background: #f8fafc; text-align: left; font-weight: 700; }
.table-wrap table { min-width: 100%; }

.kg-layout {
  display: grid;
  grid-template-columns: 330px 1fr;
  gap: 12px;
  align-items: start;
}
.kg-side {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fcfdff;
  padding: 12px;
}
.kg-main {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfcfe;
  padding: 12px;
}

.graph-square-wrap {
  width: 100%;
  aspect-ratio: 1 / 1;
  min-height: 520px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  position: relative;
}
.graph-square {
  width: 100%;
  height: 100%;
  min-height: 520px;
}

.legend {
  position: absolute;
  right: 8px;
  top: 8px;
  border: 1px solid #d8dee8;
  border-radius: 8px;
  background: rgba(255,255,255,.95);
  font-size: 12px;
  color: #111;
  padding: 6px 8px;
  line-height: 1.5;
}

.footer {
  border-top: 1px solid var(--line);
  margin-top: 6px;
  padding-top: 10px;
  font-size: 12px;
  color: #111;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 20px;
  text-align: center;
  flex-wrap: nowrap;
}
.footer div { color: #111; }
.footer a { color: #1e4a8a; text-decoration: none; }
.footer a:hover { text-decoration: underline; }
a { color: #1e4a8a; }

.lead { line-height: 1.9; }
.cards-gap { margin-top: var(--space-10); }
.kg-top-gap { margin-top: var(--space-8); }
.stack-8 { display: grid; gap: var(--space-8); }
.mt-10 { margin-top: var(--space-10); }
.mt-12 { margin-top: var(--space-12); }
.result-gap { margin-top: var(--space-10); }
.section-toolbar {
  display: flex;
  gap: var(--space-8);
  align-items: center;
  flex-wrap: wrap;
}
.section-toolbar h3 { margin: 0; }
.preview-filter-bar {
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfcff;
  padding: 12px;
}
.preview-filter-grid {
  display: grid;
  grid-template-columns: minmax(180px, 220px) minmax(260px, 1fr) auto;
  gap: 10px;
  align-items: end;
}
.preview-filter-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.preview-filter-actions .btn {
  min-width: 120px;
}
.citation-item {
  margin-bottom: var(--space-10);
}
.citation-item p {
  margin: 0;
  line-height: 1.9;
  font-size: 15px;
}
.img-panel {
  width: 100%;
  max-width: 1000px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 8px;
}
.structure-grid {
  grid-template-columns: minmax(0, 1.5fr) minmax(360px, 1fr);
  gap: 12px;
  align-items: stretch;
}
.structure-col {
  min-height: 0;
}
.structure-left {
  display: block;
}
.structure-img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.structure-right {
  display: block;
}
.structure-rel-table {
  min-height: 0;
}
.structure-rel-table .table-wrap {
  height: 520px;
  overflow: auto;
}
.structure-rel-table table {
  font-size: 11px;
}
.home-schema .kg-layout {
  grid-template-columns: 300px 1fr;
}
.compact-square .graph-square-wrap {
  width: 100%;
  max-width: none;
  margin: 0;
  aspect-ratio: 16 / 10;
  min-height: 520px;
}
.compact-square .graph-square {
  min-height: 520px;
}
.result-kg {
  grid-template-columns: 300px 1fr;
}
.result-kg .btn {
  width: 100%;
}
.result-kg .compact-square .graph-square-wrap {
  aspect-ratio: 16 / 10;
  min-height: 360px;
}
.result-kg .compact-square .graph-square {
  min-height: 360px;
}
.browser-layout {
  display: grid;
  grid-template-columns: 600px minmax(0, 1fr);
  gap: 16px;
  align-items: stretch;
  margin-top: 10px;
}
.browser-aside {
  display: grid;
  gap: 10px;
  align-content: start;
  position: sticky;
  top: 12px;
}
.browser-structure-img {
  width: 100%;
  max-width: none;
  padding: 4px;
}
.browser-main {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, #fcfdff 0%, #f8fbff 100%);
  padding: 16px;
  display: grid;
  gap: 14px;
  min-height: 100%;
}
.browser-module-box {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #ffffff;
  padding: 12px;
  display: grid;
  gap: 10px;
}
.browser-module-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}
.browser-module-head h3 {
  margin: 0;
}
.module-quick-pick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.module-chip {
  border: 1px solid #c8d6e6;
  border-radius: 999px;
  background: #f4f8fc;
  color: #153a61;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  padding: 8px 12px;
  cursor: pointer;
}
.module-chip.active {
  background: #1f4e79;
  border-color: #1f4e79;
  color: #fff;
}
.module-logic-hint {
  font-size: 13px;
}
.browser-next-step {
  border-top: 1px solid #e4e9f0;
  padding-top: 10px;
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0;
}
.warn-text {
  color: #8c2f1c;
}
.browser-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.browser-toolbar-embedded {
  border-top: 1px solid #e4e9f0;
  padding-top: 10px;
}
.browser-dataset-select {
  flex: 1 1 280px;
  min-width: 240px;
}
.browser-panel {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 14px;
  display: grid;
  gap: 12px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
}
.browser-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.browser-panel-head h3 {
  margin: 0;
}
.browser-panel-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.builder-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  align-items: start;
}
.column-checklist {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: 8px;
  max-height: 320px;
  overflow: auto;
}
.column-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  border: 1px solid #e1e7ef;
  border-radius: 8px;
  background: #fbfcff;
  padding: 8px 10px;
  font-size: 13px;
  min-width: 0;
}
.column-item > span:first-of-type {
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
  line-height: 1.4;
}
.column-badge {
  margin-left: auto;
  border-radius: 999px;
  background: #e6eef7;
  color: #1f4e79;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
}
.builder-output-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}
.builder-output-name {
  border: 1px solid #d7dce3;
  background: #fbfcfe;
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13px;
  color: #111;
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
  line-height: 1.4;
}
.builder-output-lock {
  border: 1px solid #d4deea;
  border-radius: 8px;
  background: #f5f8fc;
  color: #35587c;
  font-size: 12px;
  line-height: 1.2;
  padding: 8px 12px;
  text-align: center;
}
.result-layout {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  margin-top: 8px;
}
.result-fields-panel {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fcfdff;
  padding: 10px;
  min-height: 460px;
  position: sticky;
  top: 12px;
}
.result-fields-panel-top {
  min-height: 0;
  position: static;
  margin-top: 0;
}
.result-fields-list {
  margin-top: 8px;
  display: grid;
  gap: 10px;
}
.output-group {
  border: 1px solid #dfe5ee;
  border-radius: 8px;
  background: #fff;
  padding: 8px;
}
.output-group-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.output-group-title {
  font-size: 13px;
  font-weight: 700;
  color: #1a2a3d;
  margin: 0;
}
.output-group-body {
  display: grid;
  grid-template-columns: repeat(3, minmax(220px, 1fr));
  gap: 8px;
}
.output-group-remove {
  padding: 6px 10px;
  font-size: 12px;
}
.result-table-panel {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 10px;
  min-height: 460px;
  display: grid;
  align-content: start;
}
.result-table-panel-wide {
  margin-top: 8px;
}
.result-pager {
  display: grid;
  grid-template-columns: 100px 1fr auto 100px;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}
#resultPageInfo {
  text-align: center;
  font-size: 13px;
  font-weight: 600;
}
.result-page-jump {
  display: flex;
  align-items: center;
  gap: 8px;
}
.result-page-jump .input {
  width: 84px;
  min-height: 36px;
  padding: 8px 10px;
}
.btn:disabled,
.btn.btn-ghost:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}
@media (max-width: 1100px) {
  .kg-layout { grid-template-columns: 1fr; }
  .graph-square-wrap { min-height: 440px; }
  .graph-square { min-height: 440px; }
  .home-schema .kg-layout { grid-template-columns: 1fr; }
  .result-kg { grid-template-columns: 1fr; }
  .result-kg .compact-square .graph-square-wrap,
  .result-kg .compact-square .graph-square { min-height: 360px; }
  .browser-layout { grid-template-columns: 1fr; }
  .browser-aside { position: static; }
  .column-checklist { grid-template-columns: 1fr 1fr; }
  .output-group-body { grid-template-columns: 1fr 1fr; }
  .result-fields-panel { position: static; }
}
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(150px,1fr)); }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .structure-grid { grid-template-columns: 1fr; }
  .structure-col { min-height: auto; }
  .structure-rel-table .table-wrap { height: 380px; }
  .result-pager,
  .column-checklist { grid-template-columns: 1fr; }
  .output-group-body,
  .builder-output-row { grid-template-columns: 1fr; }
  .preview-filter-grid { grid-template-columns: 1fr; }
  .browser-dataset-select { min-width: 100%; }
  .result-page-jump {
    justify-content: center;
  }
  .footer {
    flex-wrap: wrap;
    gap: 6px 12px;
  }
}