.bia-shell {
  --bia-ink: #172033;
  --bia-muted: #5f6b7a;
  --bia-border: #d9e0e8;
  --bia-soft: #f6f8fb;
  --bia-panel: #ffffff;
  --bia-blue: #2f6fbd;
  --bia-green: #2f8f6b;
  --bia-red: #b24b4b;
  --bia-amber: #b7791f;
  color: var(--bia-ink);
}

#bia-app {
  max-width: 100%;
  margin: 1.5rem 0 0;
  padding: 0;
}

#bia-app.page-columns.page-full {
  grid-column: body-content-start / body-content-end !important;
  width: 100% !important;
}

#bia-app .page-columns,
#bia-app .page-full {
  grid-column: auto !important;
}

.bia-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: start;
}

.bia-shell .bia-grid.page-columns {
  display: grid !important;
  grid-template-columns: 1fr !important;
  gap: 1rem !important;
}

.bia-shell .bia-grid.page-columns > * {
  grid-column: auto !important;
}

.bia-panel {
  background: var(--bia-panel);
  border: 1px solid var(--bia-border);
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 8px 20px rgba(23, 32, 51, 0.05);
}

#bia-app .bia-panel,
#bia-app .bia-results-grid,
#bia-app .bia-chart-grid,
#bia-app .bia-interpretation {
  margin-top: 1.25rem;
}

.bia-inputs {
  position: static;
}

.bia-inputs-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.8rem;
}

.bia-reset-btn {
  background: none;
  border: 1px solid var(--bia-border);
  border-radius: 6px;
  color: var(--bia-muted);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0.28rem 0.65rem;
  white-space: nowrap;
}

.bia-reset-btn:hover {
  border-color: var(--bia-blue);
  color: var(--bia-blue);
}

.bia-input-group-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  align-items: start;
}

.bia-section-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0.9rem 0 0.55rem;
  color: var(--bia-ink);
}

.bia-section-title:first-child {
  margin-top: 0;
}

.bia-control {
  margin-bottom: 0.7rem;
}

.bia-control label {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.84rem;
  color: var(--bia-muted);
  margin-bottom: 0.25rem;
}

.bia-control input[type="range"] {
  width: 100%;
  accent-color: var(--bia-blue);
}

.bia-value {
  color: var(--bia-ink);
  font-weight: 700;
  white-space: nowrap;
}

.bia-results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.75rem;
  margin-bottom: 0;
}

.bia-card {
  background: var(--bia-soft);
  border: 1px solid var(--bia-border);
  border-radius: 8px;
  padding: 0.9rem;
  min-height: 104px;
}

.bia-card-label {
  color: var(--bia-muted);
  font-size: 0.78rem;
  line-height: 1.3;
  min-height: 2.1em;
}

.bia-card-value {
  font-size: 1.35rem;
  font-weight: 800;
  margin-top: 0.45rem;
  color: var(--bia-ink);
}

.bia-card-note {
  color: var(--bia-muted);
  font-size: 0.75rem;
  margin-top: 0.25rem;
}

.bia-calculation-panel {
  margin-top: 1.25rem;
  margin-bottom: 0;
}

.bia-calculation-panel summary {
  cursor: pointer;
  list-style: none;
}

.bia-calculation-panel summary::-webkit-details-marker {
  display: none;
}

.bia-calculation-summary {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.bia-calculation-summary::after {
  color: var(--bia-blue);
  content: "Show formulas";
  font-size: 0.82rem;
  font-weight: 800;
  white-space: nowrap;
}

.bia-calculation-panel[open] .bia-calculation-summary::after {
  content: "Hide formulas";
}

.bia-calculation-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 0.85rem;
}

.bia-calculation-item {
  background: var(--bia-soft);
  border: 1px solid var(--bia-border);
  border-radius: 8px;
  padding: 0.85rem;
}

.bia-calculation-item h4 {
  color: var(--bia-ink);
  font-size: 0.9rem;
  margin: 0 0 0.35rem;
}

.bia-calculation-item p {
  color: var(--bia-muted);
  font-size: 0.84rem;
  line-height: 1.45;
  margin: 0;
}

.bia-calculation-item strong {
  color: var(--bia-ink);
}

.bia-scenario-panel {
  margin-top: 1.25rem;
}

.bia-scenario-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 0.9rem;
}

.bia-scenario-title {
  font-weight: 800;
  color: var(--bia-ink);
  margin-bottom: 0.2rem;
}

.bia-scenario-copy {
  color: var(--bia-muted);
  font-size: 0.86rem;
  margin: 0;
}

.bia-scenario-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}

.bia-scenario-button {
  border: 1px solid var(--bia-border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--bia-ink);
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 700;
  padding: 0.42rem 0.72rem;
}

.bia-scenario-button:hover {
  border-color: var(--bia-blue);
  color: var(--bia-blue);
}

.bia-scenario-button.active {
  background: var(--bia-blue);
  border-color: var(--bia-blue);
  color: #ffffff;
}

.bia-scenario-detail {
  background: var(--bia-soft);
  border-left: 4px solid var(--bia-green);
  border-radius: 6px;
  color: var(--bia-muted);
  font-size: 0.88rem;
  margin: 0;
  padding: 0.75rem 0.85rem;
}

.bia-scenario-learning {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 1rem;
  margin-top: 0.85rem;
}

.bia-scenario-box {
  background: #ffffff;
  border: 1px solid var(--bia-border);
  border-radius: 8px;
  padding: 0.85rem;
}

.bia-scenario-box h4 {
  color: var(--bia-ink);
  font-size: 0.92rem;
  margin: 0 0 0.45rem;
}

.bia-scenario-box p {
  color: var(--bia-muted);
  font-size: 0.86rem;
  margin: 0 0 0.5rem;
}

.bia-scenario-box ul {
  color: var(--bia-muted);
  font-size: 0.84rem;
  margin: 0.35rem 0 0;
  padding-left: 1.1rem;
}

.bia-scenario-box li {
  margin-bottom: 0.25rem;
}

.bia-delta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
}

.bia-delta-card {
  background: var(--bia-soft);
  border-radius: 6px;
  padding: 0.7rem;
}

.bia-delta-label {
  color: var(--bia-muted);
  font-size: 0.76rem;
  line-height: 1.25;
}

.bia-delta-value {
  color: var(--bia-ink);
  font-size: 1.05rem;
  font-weight: 800;
  margin-top: 0.25rem;
}

.bia-delta-note {
  color: var(--bia-muted);
  font-size: 0.78rem;
  margin-top: 0.45rem;
}

.bia-chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

#bia-app .bia-chart-grid > .bia-panel {
  margin-top: 0;
}

.bia-chart-title {
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.bia-chart-subtitle {
  font-size: 0.8rem;
  color: var(--bia-muted);
  margin-bottom: 0.65rem;
}

.bia-svg {
  width: 100%;
  min-height: 220px;
  display: block;
}

.bia-table-wrap {
  overflow-x: auto;
}

.bia-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

.bia-table th,
.bia-table td {
  border-bottom: 1px solid var(--bia-border);
  padding: 0.55rem 0.5rem;
  text-align: right;
  white-space: nowrap;
}

.bia-table th:first-child,
.bia-table td:first-child {
  text-align: left;
}

.bia-table th {
  color: var(--bia-muted);
  font-weight: 700;
  background: var(--bia-soft);
}

.bia-table tbody tr:hover td {
  background: #f0f4f9;
}

.bia-sensitivity-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

#bia-app main {
  margin-bottom: 0;
}

.bia-sensitivity-summary {
  background: var(--bia-soft);
  border-left: 4px solid var(--bia-amber);
  border-radius: 6px;
  color: var(--bia-muted);
  font-size: 0.88rem;
  line-height: 1.45;
  margin-top: 0.8rem;
  padding: 0.75rem 0.85rem;
}

.bia-formula-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1rem 0;
}

.bia-formula {
  border: 1px solid var(--bia-border);
  border-radius: 8px;
  background: var(--bia-soft);
  padding: 1rem;
}

.bia-formula h4 {
  font-size: 0.95rem;
  margin: 0 0 0.6rem;
}

.bia-equation {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--bia-ink);
}

.bia-equation strong {
  font-weight: 800;
}

.bia-equation .operator {
  color: var(--bia-blue);
  font-weight: 800;
  margin: 0 0.25rem;
}


.bia-perspectives {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0 0.5rem;
}

.bia-perspective-card {
  background: var(--bia-panel);
  border: 1px solid var(--bia-border);
  border-radius: 8px;
  border-top: 3px solid var(--bia-blue);
  padding: 1.1rem 1.1rem 1.2rem;
}

.bia-perspective-label {
  color: var(--bia-blue);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.bia-perspective-title {
  color: var(--bia-ink);
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 0.65rem;
  line-height: 1.35;
  min-height: 2.57em;
}

.bia-perspective-stat {
  display: flex;
  flex-direction: column;
  gap: 0.18rem;
  background: var(--bia-soft);
  border-radius: 6px;
  padding: 0.6rem 0.75rem;
  margin-bottom: 0.75rem;
}

.bia-perspective-stat-value {
  color: var(--bia-ink);
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.2;
}

.bia-perspective-stat-note {
  color: var(--bia-muted);
  font-size: 0.78rem;
  line-height: 1.3;
}

.bia-perspective-card p {
  color: var(--bia-muted);
  font-size: 0.875rem;
  line-height: 1.6;
  margin: 0 0 0.55rem;
}

.bia-perspective-card p:last-child {
  margin-bottom: 0;
}

@media (max-width: 1100px) {
  .bia-grid,
  .bia-chart-grid,
  .bia-formula-grid,
  .bia-calculation-grid,
  .bia-sensitivity-layout,
  .bia-input-group-grid,
  .bia-scenario-learning,
  .bia-perspectives {
    grid-template-columns: 1fr;
  }

  .bia-shell .bia-grid.page-columns {
    grid-template-columns: 1fr !important;
  }

  .bia-inputs {
    position: static;
  }

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

@media (max-width: 640px) {
  #bia-app {
    padding: 0 0.75rem;
  }

  .bia-results-grid {
    grid-template-columns: 1fr;
  }
}