:root {
  color-scheme: only light;
  --bs-ink: #4d5c98;
  --bs-ink-deep: #36457f;
  --bs-pink: #ee91b9;
  --bs-pink-deep: #c86591;
  --bs-lavender: #e8e8fb;
  --bs-blue: #8fa9e8;
  --bs-blue-soft: #e9f1ff;
  --bs-paper: #f4f1fc;
  --bs-surface: rgba(255, 255, 255, .78);
  --bs-surface-strong: rgba(255, 255, 255, .92);
  --bs-line: rgba(77, 92, 152, .16);
  --bs-line-strong: rgba(77, 92, 152, .28);
  --bs-control-border: rgba(77, 92, 152, .44);
  --bs-control-border-hover: rgba(77, 92, 152, .66);
  --bs-control-focus: #d47a32;
  --bs-amber: #c18a3f;
  --bs-muted: #69739b;
  --bs-text: #2f3b70;
  --bs-positive: #458878;
  --bs-negative: #c45882;
  --bs-shadow: 0 16px 42px rgba(77, 92, 152, .10);
  --bs-shadow-soft: 0 8px 22px rgba(77, 92, 152, .08);
}

* { box-sizing: border-box; }

html {
  width: 100%;
  background: var(--bs-paper);
  overscroll-behavior-x: none;
}

body.bs-page {
  width: 100%;
  min-width: 0;
  min-height: 100vh;
  margin: 0;
  color: var(--bs-text);
  background:
    radial-gradient(circle at 10% 0%, rgba(238, 145, 185, .18), transparent 28rem),
    radial-gradient(circle at 94% 8%, rgba(143, 169, 232, .23), transparent 32rem),
    linear-gradient(145deg, #fbfaff 0%, #f2effd 52%, #eef4ff 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--bs-ink); }

.bs-shell {
  width: min(100% - 48px, 1440px);
  margin: 0 auto;
  padding-bottom: 56px;
}

.bs-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 28px;
  padding: 48px 0 30px;
}

.bs-eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--bs-pink-deep);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.bs-hero h1 {
  max-width: 780px;
  margin: 0;
  color: var(--bs-ink-deep);
  font-size: clamp(2rem, 4.2vw, 3.8rem);
  font-weight: 750;
  letter-spacing: -.045em;
  line-height: 1.02;
}

.bs-subtitle {
  max-width: 690px;
  margin: 16px 0 0;
  color: var(--bs-muted);
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.65;
}

.scenario-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  max-width: 340px;
}

.scenario-chip,
.live-badge {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 11px;
  border: 1px solid var(--bs-line);
  border-radius: 999px;
  color: var(--bs-ink);
  background: rgba(255, 255, 255, .64);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .05em;
  white-space: nowrap;
}

.scenario-chip.is-primary,
.live-badge {
  border-color: rgba(238, 145, 185, .45);
  color: var(--bs-pink-deep);
  background: rgba(238, 145, 185, .13);
}

.workbench-grid {
  display: grid;
  grid-template-columns: minmax(320px, 360px) minmax(0, 1fr);
  align-items: start;
  gap: 24px;
}

.parameters-panel,
.bs-panel {
  min-width: 0;
  border: 1px solid var(--bs-line);
  border-radius: 24px;
  background: var(--bs-surface);
  box-shadow: var(--bs-shadow);
  backdrop-filter: blur(16px);
}

.parameters-panel {
  position: sticky;
  top: 18px;
  padding: 22px;
}

.results-column {
  display: grid;
  align-self: start;
  min-width: 0;
  gap: 18px;
}

.panel-heading,
.result-heading,
.section-heading,
.holding-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.panel-heading h2,
.result-heading h2,
.section-heading h2,
.holding-heading h2 {
  margin: 0;
  color: var(--bs-ink-deep);
  font-size: 1.18rem;
  font-weight: 750;
  letter-spacing: -.02em;
  line-height: 1.25;
}

.panel-heading h2 { font-size: 1.3rem; }

.panel-heading .section-kicker,
.section-heading .section-kicker {
  margin-bottom: 5px;
}

.live-badge {
  flex: 0 0 auto;
  min-height: 26px;
  padding: 4px 9px;
  font-size: 10px;
}

.live-badge::before {
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--bs-positive);
  content: "";
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin: 18px 0 25px;
  color: var(--bs-muted);
  font-size: .83rem;
  line-height: 1.4;
}

.breadcrumb a {
  color: var(--bs-ink);
  font-weight: 750;
  text-decoration: none;
}

.breadcrumb a:hover { color: var(--bs-pink-deep); }

.parameter-form {
  display: grid;
  gap: 0;
}

.contract-controls {
  display: grid;
  gap: 14px;
  margin-bottom: 4px;
}

.input-section {
  min-width: 0;
  margin: 0;
  padding: 19px 0 0;
  border: 0;
  border-top: 1px solid var(--bs-line);
}

.input-section + .input-section { margin-top: 19px; }

.input-section legend {
  width: 100%;
  margin: 0 0 13px;
  padding: 0;
  color: var(--bs-ink);
  font-size: .78rem;
  font-weight: 850;
  letter-spacing: .10em;
  line-height: 1.3;
  text-transform: uppercase;
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  min-width: 0;
  padding: 0;
}

.segmented-control label {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 46px;
  place-items: center;
  margin: 0;
  padding: 0 12px;
  border: 1px solid var(--bs-control-border);
  border-radius: 11px;
  color: var(--bs-muted);
  cursor: pointer;
  font-size: .9rem;
  font-weight: 750;
  line-height: 1.25;
  white-space: nowrap;
}

.segmented-control label:hover {
  border-color: var(--bs-control-border-hover);
  color: var(--bs-ink);
}

.segmented-control input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.segmented-control label:has(input:checked) {
  color: var(--bs-ink-deep);
  border-color: var(--segment-accent, var(--bs-control-focus));
  background: var(--segment-tint, rgba(255, 255, 255, .94));
}

.segmented-control label:has(input:focus-visible) {
  outline: 2px solid var(--bs-control-focus);
  outline-offset: 2px;
}

.segmented-control label:has(input[name="option_type"][value="call"]) {
  --segment-accent: var(--bs-positive);
  --segment-tint: rgba(69, 136, 120, .10);
}

.segmented-control label:has(input[name="option_type"][value="put"]) {
  --segment-accent: var(--bs-negative);
  --segment-tint: rgba(196, 88, 130, .10);
}

.segmented-control label:has(input[name="pricing_model"][value="american"]) {
  --segment-accent: var(--bs-blue);
  --segment-tint: rgba(143, 169, 232, .16);
}

.segmented-control label:has(input[name="pricing_model"][value="european"]) {
  --segment-accent: var(--bs-amber);
  --segment-tint: rgba(193, 138, 63, .13);
}

.field {
  margin: 0 0 13px;
}

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

.field label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 7px;
  color: var(--bs-text);
  font-size: .88rem;
  font-weight: 700;
  line-height: 1.4;
}

.field label small {
  color: var(--bs-muted);
  font-size: .72rem;
  font-weight: 600;
}

.input-wrap { position: relative; }

.input-wrap :is(input, select, textarea) {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: 11px 52px 11px 13px;
  border: 1px solid var(--bs-control-border);
  border-radius: 11px;
  outline: 0;
  color: var(--bs-ink-deep);
  background: rgba(255, 255, 255, .74);
  font-size: 16px;
  font-variant-numeric: tabular-nums;
  transition: border-color .16s ease, outline-color .16s ease, background-color .16s ease;
}

.input-wrap input::placeholder { color: #a2a8c2; }

.input-wrap :is(input, select, textarea):hover {
  border-color: var(--bs-control-border-hover);
  background: rgba(255, 255, 255, .92);
}

.input-wrap :is(input, select, textarea):focus {
  border-color: var(--bs-control-focus);
  background: #fff;
  outline: none;
}

.input-wrap :is(input, select, textarea):focus-visible {
  outline: 1px solid rgba(212, 122, 50, .34);
  outline-offset: 1px;
}

.input-unit {
  position: absolute;
  top: 50%;
  right: 13px;
  color: var(--bs-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .76rem;
  font-weight: 700;
  pointer-events: none;
  transform: translateY(-50%);
}

.field-help {
  margin: 6px 0 0;
  color: var(--bs-muted);
  font-size: .74rem;
  line-height: 1.45;
}

.form-actions {
  display: grid;
  gap: 9px;
  margin-top: 24px;
}

.primary-action,
.secondary-action {
  min-height: 48px;
  border-radius: 12px;
  cursor: pointer;
  font-size: .92rem;
  font-weight: 800;
  transition: transform .16s ease, box-shadow .16s ease, background-color .16s ease;
}

.primary-action {
  border: 1px solid var(--bs-pink);
  color: #fff;
  background: linear-gradient(135deg, var(--bs-pink) 0%, #d47eb0 100%);
  box-shadow: 0 9px 18px rgba(238, 145, 185, .23);
}

.primary-action:hover {
  box-shadow: 0 12px 24px rgba(238, 145, 185, .30);
  transform: translateY(-1px);
}

.secondary-action {
  border: 1px solid var(--bs-line-strong);
  color: var(--bs-ink);
  background: rgba(255, 255, 255, .50);
}

.secondary-action:hover {
  border-color: rgba(238, 145, 185, .60);
  background: rgba(255, 255, 255, .86);
}

.primary-action:focus-visible,
.secondary-action:focus-visible,
.breadcrumb a:focus-visible,
.metric-card:focus-within,
.scenario-chip:focus-visible {
  outline: 3px solid rgba(143, 169, 232, .5);
  outline-offset: 3px;
}

.form-note {
  margin: 20px 0 0;
  padding: 13px 14px;
  border-radius: 12px;
  color: var(--bs-muted);
  background: rgba(232, 232, 251, .45);
  font-size: .76rem;
  line-height: 1.55;
}

.bs-panel { padding: 25px; }

.result-heading { padding-bottom: 19px; border-bottom: 1px solid var(--bs-line); }

.result-heading h2 { font-size: 1.38rem; }

.result-heading p,
.section-heading p,
.holding-heading p {
  margin: 6px 0 0;
  color: var(--bs-muted);
  font-size: .8rem;
  line-height: 1.5;
}

.result-heading .scenario-chips {
  max-width: 320px;
}

.primary-metrics {
  display: grid;
  grid-template-columns: minmax(180px, 1.45fr) repeat(3, minmax(125px, 1fr));
  gap: 12px;
  margin-top: 19px;
}

.metric-card {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--bs-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, .60);
}

.metric-card.primary {
  border-color: rgba(238, 145, 185, .37);
  background:
    radial-gradient(circle at 100% 0, rgba(238, 145, 185, .18), transparent 10rem),
    rgba(255, 255, 255, .78);
}

.metric-label {
  display: block;
  min-height: 2.5em;
  margin-bottom: 8px;
  color: var(--bs-muted);
  font-size: .77rem;
  font-weight: 750;
  line-height: 1.35;
}

.metric-value {
  display: block;
  overflow-wrap: anywhere;
  color: var(--bs-ink-deep);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: clamp(1.24rem, 2.3vw, 1.85rem);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  letter-spacing: -.045em;
  line-height: 1.1;
}

.metric-card.primary .metric-value {
  color: var(--bs-pink-deep);
  font-size: clamp(1.55rem, 3vw, 2.45rem);
}

.metric-caption {
  margin: 8px 0 0;
  color: var(--bs-muted);
  font-size: .74rem;
  line-height: 1.45;
}

.value-positive { color: var(--bs-positive) !important; }
.value-negative { color: var(--bs-negative) !important; }
.value-neutral { color: var(--bs-ink-deep) !important; }

.section-heading {
  align-items: end;
  margin-bottom: 17px;
}

.section-heading h2 { font-size: 1.15rem; }

.section-heading .section-kicker { margin-bottom: 4px; }

.greeks-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 10px;
}

.greek-card {
  min-width: 0;
  padding: 13px 14px;
  border: 1px solid var(--bs-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .51);
}

.greek-card .metric-label {
  min-height: 0;
  margin-bottom: 7px;
}

.greek-card .metric-value { font-size: 1.2rem; }

.exposure-block {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--bs-line);
}

.exposure-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 11px;
}

.exposure-heading h3 {
  margin: 0;
  color: var(--bs-ink);
  font-size: .94rem;
  font-weight: 800;
}

.exposure-heading span {
  color: var(--bs-muted);
  font-size: .74rem;
}

.exposure-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.exposure-card {
  min-width: 0;
  padding: 13px 14px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(233, 241, 255, .78), rgba(232, 232, 251, .62));
}

.exposure-card .metric-label {
  min-height: 0;
  margin-bottom: 7px;
}

.exposure-card .metric-value { font-size: 1.2rem; }

.method-note {
  margin: 16px 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--bs-blue);
  border-radius: 0 10px 10px 0;
  color: var(--bs-muted);
  background: rgba(233, 241, 255, .48);
  font-size: .78rem;
  line-height: 1.55;
}

.method-note strong { color: var(--bs-ink); }

.equation-wrap {
  overflow-x: auto;
  padding: 3px 0 10px;
}

.equation {
  display: grid;
  grid-template-columns: minmax(115px, 1.1fr) auto minmax(115px, 1fr) auto minmax(115px, 1fr) auto minmax(115px, 1fr);
  align-items: stretch;
  min-width: 720px;
  gap: 8px;
}

.equation-node {
  display: flex;
  min-width: 0;
  min-height: 112px;
  flex-direction: column;
  justify-content: space-between;
  padding: 13px;
  border: 1px solid var(--bs-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .57);
}

.equation-node.total {
  border-color: rgba(77, 92, 152, .32);
  background: linear-gradient(145deg, rgba(232, 232, 251, .88), rgba(255, 255, 255, .69));
}

.equation-label {
  overflow-wrap: anywhere;
  color: var(--bs-muted);
  font-size: .74rem;
  font-weight: 750;
  line-height: 1.35;
}

.equation-value {
  display: block;
  color: var(--bs-ink-deep);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 1.15rem;
  font-variant-numeric: tabular-nums;
  font-weight: 800;
}

.equation-sign {
  display: grid;
  place-items: center;
  color: var(--bs-pink);
  font-size: 1.35rem;
  font-weight: 800;
}

.decomposition-meta {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(190px, .7fr);
  gap: 12px;
  margin-top: 9px;
}

.decomposition-copy,
.share-list {
  padding: 14px;
  border-radius: 13px;
  background: rgba(232, 232, 251, .43);
}

.decomposition-copy {
  color: var(--bs-muted);
  font-size: .78rem;
  line-height: 1.6;
}

.decomposition-copy strong { color: var(--bs-ink); }

.share-list {
  display: grid;
  gap: 8px;
  align-content: start;
}

.share-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--bs-muted);
  font-size: .77rem;
}

.share-row strong {
  color: var(--bs-ink-deep);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

.holding-heading { align-items: end; }

.holding-heading h2 { font-size: 1.15rem; }

.holding-heading .scenario-chip {
  font-size: .72rem;
}

.holding-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 18px 0;
}

.holding-summary .metric-card {
  padding: 13px 14px;
  border-radius: 14px;
}

.holding-summary .metric-label {
  min-height: 0;
  margin-bottom: 7px;
}

.holding-summary .metric-value { font-size: 1.15rem; }

.carry-breakdown {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.carry-item {
  padding: 12px 14px;
  border: 1px solid var(--bs-line);
  border-radius: 13px;
  background: rgba(255, 255, 255, .52);
}

.carry-item span {
  display: block;
  margin-bottom: 6px;
  color: var(--bs-muted);
  font-size: .75rem;
  line-height: 1.35;
}

.carry-item strong {
  color: var(--bs-ink-deep);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--bs-line);
  border-radius: 15px;
  background: rgba(255, 255, 255, .42);
}

.comparison-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: .78rem;
}

.comparison-table th,
.comparison-table td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--bs-line);
  text-align: right;
  vertical-align: middle;
  white-space: nowrap;
}

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

.comparison-table th {
  color: var(--bs-muted);
  background: rgba(232, 232, 251, .58);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .02em;
}

.comparison-table td {
  color: var(--bs-ink-deep);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

.comparison-table td:first-child {
  font-family: inherit;
  font-weight: 800;
}

.comparison-table tbody tr:last-child td { border-bottom: 0; }
.comparison-table tbody tr:hover { background: rgba(238, 145, 185, .08); }

.expired-row td {
  color: var(--bs-muted);
  font-family: inherit;
  text-align: center !important;
}

.holding-cards { display: none; }

.holding-card {
  padding: 15px;
  border: 1px solid var(--bs-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .56);
}

.holding-card + .holding-card { margin-top: 10px; }

.holding-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 11px;
  border-bottom: 1px solid var(--bs-line);
}

.holding-card-header strong { color: var(--bs-ink); }

.holding-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding-top: 12px;
}

.holding-card-grid span {
  display: block;
  margin-bottom: 4px;
  color: var(--bs-muted);
  font-size: .73rem;
  line-height: 1.35;
}

.holding-card-grid strong {
  color: var(--bs-ink-deep);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .94rem;
  font-variant-numeric: tabular-nums;
}

.chart-panel { padding-bottom: 21px; }

.chart-frame {
  position: relative;
  min-height: 190px;
  padding: 12px 8px 2px;
  border: 1px solid var(--bs-line);
  border-radius: 15px;
  background: linear-gradient(180deg, rgba(233, 241, 255, .58), rgba(255, 255, 255, .38));
}

#holding-chart {
  display: block;
  width: 100%;
  height: 190px;
}

#holding-chart[hidden],
.chart-empty[hidden] {
  display: none;
}

.chart-frame:has(#holding-chart[hidden]) {
  min-height: 0;
  padding: 0;
}

.chart-empty {
  display: grid;
  min-height: 80px;
  padding: 18px;
  place-items: center;
  margin: 0;
  color: var(--bs-muted);
  font-size: .8rem;
}

.chart-legend {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 8px 4px 0;
  color: var(--bs-muted);
  font-size: .74rem;
}

.chart-legend::before {
  width: 22px;
  height: 3px;
  border-radius: 3px;
  background: var(--bs-pink);
  content: "";
}

.alert {
  padding: 15px 17px;
  border: 1px solid rgba(196, 88, 130, .32);
  border-radius: 15px;
  color: #8f3f61;
  background: rgba(255, 231, 240, .78);
  box-shadow: var(--bs-shadow-soft);
  font-size: .88rem;
  line-height: 1.55;
}

.empty-state {
  display: grid;
  min-height: 400px;
  place-items: center;
  padding: 44px;
  text-align: center;
}

.empty-state-inner { max-width: 470px; }

.empty-icon {
  display: grid;
  width: 58px;
  height: 58px;
  margin: 0 auto 18px;
  place-items: center;
  border: 1px solid rgba(238, 145, 185, .35);
  border-radius: 18px;
  color: var(--bs-pink-deep);
  background: rgba(238, 145, 185, .12);
}

.empty-state h2 {
  margin: 0;
  color: var(--bs-ink-deep);
  font-size: 1.55rem;
  letter-spacing: -.025em;
}

.empty-state p {
  margin: 12px 0 0;
  color: var(--bs-muted);
  font-size: .92rem;
  line-height: 1.65;
}

.empty-steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.empty-steps li {
  padding: 7px 11px;
  border-radius: 999px;
  color: var(--bs-ink);
  background: rgba(232, 232, 251, .65);
  font-size: .76rem;
  font-weight: 700;
}

.hidden-chart-data { display: none; }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 1050px) {
  .bs-hero { padding-top: 38px; }
  .primary-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric-card.primary { grid-column: span 2; }
  .greeks-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 800px) {
  .bs-shell {
    width: min(100% - 28px, 680px);
    padding-bottom: 30px;
  }

  .bs-hero {
    display: block;
    padding: 32px 0 24px;
  }

  .bs-hero h1 { font-size: clamp(2rem, 9vw, 3rem); }
  .bs-subtitle { margin-top: 13px; font-size: .98rem; }

  .contract-controls { gap: 16px; }

  .scenario-chips {
    justify-content: flex-start;
    max-width: none;
    margin-top: 17px;
  }

  .workbench-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .parameters-panel {
    position: static;
    padding: 19px;
    border-radius: 20px;
  }

  .results-column { gap: 14px; }
  .bs-panel { padding: 19px; border-radius: 20px; }
  .primary-metrics { gap: 9px; }
  .metric-card { padding: 14px; border-radius: 14px; }
  .holding-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .decomposition-meta { grid-template-columns: 1fr; }
  .carry-breakdown { grid-template-columns: 1fr; }

  .equation-wrap {
    overflow-x: visible;
  }

  .equation {
    width: 100%;
    min-width: 0;
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .equation-node {
    min-height: 96px;
  }

  .equation-sign {
    min-height: 20px;
  }

  .chart-frame {
    min-height: 0;
    padding: 8px 6px 0;
  }

  #holding-chart {
    height: 132px;
  }

  .chart-frame:has(#holding-chart[hidden]) {
    padding: 0;
  }

  .chart-empty {
    min-height: 64px;
    padding: 11px 13px;
    font-size: .76rem;
  }
}

@media (max-width: 600px) {
  .bs-shell { width: min(100% - 20px, 500px); }
  .bs-hero { padding-top: 25px; }
  .bs-eyebrow { font-size: 10px; }
  .bs-hero h1 { font-size: 2rem; }
  .panel-heading h2,
  .result-heading h2 { font-size: 1.15rem; }
  .primary-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric-card.primary { grid-column: span 2; }
  .metric-label { min-height: 0; }
  .greeks-grid { gap: 8px; }
  .greek-card { padding: 12px; }
  .greek-card .metric-value,
  .exposure-card .metric-value { font-size: 1.05rem; }
  .exposure-grid { grid-template-columns: 1fr; }
  .holding-heading { display: block; }
  .holding-heading .scenario-chip { margin-top: 11px; }
  .table-scroll { display: none; }
  .holding-cards { display: block; }
  .chart-panel { padding-bottom: 17px; }
}

@media (max-width: 420px) {
  .bs-shell { width: min(100% - 16px, 400px); }
  .parameters-panel,
  .bs-panel { padding: 15px; border-radius: 17px; }
  .panel-heading,
  .result-heading,
  .section-heading { gap: 10px; }
  .live-badge { font-size: 9px; }
  .primary-metrics { gap: 7px; }
  .metric-card { padding: 12px; }
  .metric-card.primary .metric-value { font-size: 1.65rem; }
  .metric-value { font-size: 1.12rem; }
  .holding-summary { gap: 7px; }
  .holding-summary .metric-card { padding: 11px; }
  .breadcrumb { margin-top: 15px; margin-bottom: 19px; }
  .empty-state { min-height: 330px; padding: 28px 17px; }
}