:root {
  color-scheme: light;
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-2: #eef3f8;
  --line: #d7dee8;
  --ink: #172033;
  --muted: #637083;
  --accent: #1769aa;
  --accent-2: #13815f;
  --warning: #a65f00;
  --danger: #a43a3a;
  --soft-accent: #e5f0fb;
  --soft-green: #e5f6ef;
  --soft-warning: #fff2d9;
  --shadow: 0 14px 34px rgba(23, 32, 51, .08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  font-size: 14px;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  touch-action: manipulation;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(240px, 1fr) auto auto;
  align-items: center;
  gap: 18px;
  min-height: 64px;
  padding: 10px 22px;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 7px;
  background: #173957;
  color: #ffffff;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.topnav a {
  color: var(--muted);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 6px;
}

.topnav a:hover {
  background: var(--soft-accent);
  color: var(--accent);
}

.session-pill,
.review-badge,
.status-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: var(--surface);
  font-size: 12px;
  white-space: nowrap;
}

.session-pill.is-enterprise,
.review-badge.is-enterprise,
.status-badge.is-enterprise {
  border-color: #9ed6c1;
  background: var(--soft-green);
  color: #0c6a4b;
}

.session-pill.is-locked,
.review-badge.is-locked {
  border-color: #edc77d;
  background: var(--soft-warning);
  color: var(--warning);
}

.workspace {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 16px;
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 16px;
}

.filters,
.catalog-panel,
.bom-panel,
.upload-panel,
.metadata-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.filters {
  position: sticky;
  top: 80px;
  align-self: start;
  padding: 14px;
}

.pane-title,
.library-toolbar,
.bom-head,
.upload-head,
.metadata-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.pane-title {
  margin-bottom: 14px;
}

.pane-title h1,
.library-toolbar h2,
.bom-head h2,
.upload-head h2,
.metadata-panel h2 {
  margin: 0;
  font-size: 20px;
  line-height: 1.25;
}

.pane-title span {
  color: var(--muted);
  font-size: 12px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.field span,
.filter-block h2 {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  background: #fbfcfe;
  color: var(--ink);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid rgba(23, 105, 170, .18);
  border-color: var(--accent);
}

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

.filter-block {
  margin: 16px 0;
}

.segmented,
.check-grid {
  display: grid;
  gap: 8px;
}

.segmented button,
.check-grid label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 36px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfcfe;
  color: #334155;
}

.segmented button {
  cursor: pointer;
}

.segmented button.is-active {
  border-color: #9ac8ee;
  background: var(--soft-accent);
  color: #13598f;
  font-weight: 800;
}

.check-grid input {
  width: auto;
  min-height: auto;
}

.catalog-panel,
.bom-panel,
.upload-panel,
.metadata-panel {
  grid-column: 2;
}

.library-toolbar,
.bom-head,
.upload-head {
  padding: 16px;
  border-bottom: 1px solid var(--line);
}

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

.primary-button,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border-radius: 6px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 800;
  cursor: pointer;
}

.primary-button {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.primary-button:hover {
  background: #145c96;
}

.ghost-button {
  background: #ffffff;
  color: var(--ink);
}

.ghost-button:hover {
  background: #f3f6f9;
}

.category-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: #fbfcfe;
}

.category-strip div {
  min-height: 72px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.category-strip strong,
.category-strip span {
  display: block;
}

.category-strip span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.model-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  min-height: 640px;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-content: start;
  gap: 12px;
  padding: 16px;
}

.model-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 1px 0 rgba(23, 32, 51, .03);
}

.model-card button {
  width: 100%;
  border: 0;
  padding: 0;
  text-align: left;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.model-card.is-selected {
  border-color: #7eb7e5;
  box-shadow: 0 0 0 3px rgba(23, 105, 170, .12);
}

.thumb {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 142px;
  background:
    linear-gradient(90deg, rgba(23, 105, 170, .05) 1px, transparent 1px),
    linear-gradient(rgba(23, 105, 170, .05) 1px, transparent 1px),
    #f8fbff;
  background-size: 18px 18px;
  border-bottom: 1px solid var(--line);
}

.thumb svg {
  width: 74%;
  max-height: 110px;
}

.cert-chip {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--soft-green);
  color: #0a6b4b;
  font-size: 12px;
  font-weight: 800;
}

.model-body {
  padding: 12px;
}

.model-body h3 {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.35;
}

.model-body p {
  margin: 0 0 10px;
  color: var(--muted);
  line-height: 1.55;
}

.tag-row,
.format-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-row span,
.format-row span {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 7px;
  border-radius: 999px;
  background: #eef2f6;
  color: #405065;
  font-size: 12px;
}

.format-row span {
  background: var(--soft-accent);
  color: #13598f;
  font-weight: 800;
}

.detail-pane {
  border-left: 1px solid var(--line);
  background: #fbfcfe;
  padding: 16px;
}

.detail-pane h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.detail-pane p {
  color: var(--muted);
  line-height: 1.6;
}

.detail-actions {
  display: flex;
  gap: 10px;
  margin: 14px 0;
}

.spec-list {
  display: grid;
  gap: 8px;
  margin: 16px 0;
}

.spec-list div {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}

.spec-list dt {
  color: var(--muted);
}

.spec-list dd {
  margin: 0;
  color: var(--ink);
}

.bom-detail {
  margin: 16px 0;
}

.bom-detail h4 {
  margin: 0 0 8px;
  font-size: 14px;
}

.bom-table {
  display: grid;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.bom-table-row {
  display: grid;
  grid-template-columns: 1.05fr 1.1fr 1.3fr .7fr .8fr;
  gap: 8px;
  padding: 9px 10px;
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.bom-table-row:first-child {
  border-top: 0;
}

.bom-table-row.is-head {
  background: #f3f6f9;
  color: var(--muted);
  font-weight: 800;
}

.line-status {
  display: inline-flex;
  justify-content: center;
  min-width: 56px;
  padding: 2px 7px;
  border-radius: 999px;
  font-style: normal;
  font-size: 12px;
  font-weight: 800;
}

.line-status.is-buy {
  background: var(--soft-green);
  color: #0c6a4b;
}

.line-status.is-make {
  background: var(--soft-warning);
  color: var(--warning);
}

.line-status.is-reference {
  background: #eef2f6;
  color: #526173;
}

.material-map {
  display: grid;
  gap: 8px;
}

.material-map div {
  display: grid;
  gap: 4px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.material-map span {
  color: var(--muted);
  font-size: 12px;
}

.bom-panel {
  margin-top: 16px;
}

.bom-match-layout {
  display: grid;
  grid-template-columns: minmax(280px, .82fr) minmax(0, 1.18fr);
  gap: 16px;
  padding: 16px;
}

.bom-input-card {
  display: grid;
  align-content: start;
  gap: 12px;
}

.match-results {
  display: grid;
  align-content: start;
  gap: 12px;
}

.match-summary {
  display: flex;
  gap: 10px;
  align-items: center;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid #b9d6ec;
  border-radius: 8px;
  background: var(--soft-accent);
  color: #13598f;
}

.match-summary strong {
  font-size: 20px;
}

.match-list {
  display: grid;
  gap: 10px;
}

.match-card {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.match-row-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.match-row-head h3 {
  margin: 0 0 4px;
  font-size: 15px;
}

.match-row-head p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.candidate-list {
  display: grid;
  gap: 8px;
}

.candidate-item {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr) auto 42px;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfe;
}

.candidate-type {
  display: inline-flex;
  justify-content: center;
  padding: 4px 7px;
  border-radius: 999px;
  background: var(--soft-accent);
  color: #13598f;
  font-size: 12px;
  font-weight: 800;
}

.candidate-item strong,
.candidate-item small {
  display: block;
}

.candidate-item small {
  margin-top: 3px;
  color: var(--muted);
}

.score {
  color: var(--accent);
  font-weight: 800;
  text-align: right;
}

.unmatched-action {
  padding: 10px 12px;
  border: 1px dashed #edc77d;
  border-radius: 8px;
  background: var(--soft-warning);
  color: #815000;
  line-height: 1.55;
}

.upload-panel {
  margin-top: 16px;
}

.enterprise-warning {
  margin: 14px 16px 0;
  padding: 12px 14px;
  border: 1px solid #edc77d;
  border-radius: 8px;
  background: var(--soft-warning);
  color: #815000;
  line-height: 1.6;
}

.enterprise-warning.is-enterprise {
  border-color: #a2d9c4;
  background: var(--soft-green);
  color: #0c6a4b;
}

.upload-form {
  padding: 16px;
}

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

fieldset:disabled {
  opacity: .58;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.wide {
  grid-column: span 2;
}

.format-picker {
  align-content: start;
}

.format-picker .check-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.submit-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.submit-row output {
  color: var(--muted);
  line-height: 1.5;
}

.metadata-panel {
  align-items: flex-start;
  margin-top: 16px;
  padding: 16px;
}

.metadata-panel pre {
  width: min(720px, 100%);
  max-height: 360px;
  overflow: auto;
  margin: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0f172a;
  color: #d7e3f2;
  font-size: 12px;
  line-height: 1.55;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 32px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: 240px minmax(0, 1fr);
  }

  .category-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .model-layout {
    grid-template-columns: 1fr;
  }

  .bom-match-layout {
    grid-template-columns: 1fr;
  }

  .detail-pane {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .model-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .topbar {
    grid-template-columns: 1fr;
  }

  .topnav {
    overflow-x: auto;
  }

  .workspace {
    grid-template-columns: 1fr;
    padding: 10px;
  }

  .filters,
  .catalog-panel,
  .bom-panel,
  .upload-panel,
  .metadata-panel {
    grid-column: 1;
  }

  .filters {
    position: static;
  }

  .model-grid,
  .category-strip,
  .form-grid,
  .format-picker .check-grid {
    grid-template-columns: 1fr;
  }

  .bom-table-row,
  .candidate-item {
    grid-template-columns: 1fr;
  }

  .wide {
    grid-column: span 1;
  }

  .library-toolbar,
  .bom-head,
  .upload-head,
  .metadata-panel,
  .submit-row,
  .detail-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .toolbar-actions {
    align-items: stretch;
    flex-direction: column;
  }
}