frontend/src/styles/pages.css

/* ───────────────────────── hero */
.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(120% 140% at 80% 0%, var(--hero-ink-2) 0%, var(--hero-ink) 60%);
  color: var(--hero-text);
  margin-top: calc(-1 * var(--header-h));
  padding-top: var(--header-h);
}

.hero__art {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero__edge {
  fill: none;
  stroke: #5598e7;
  stroke-width: 1;
  opacity: 0.35;
}

.hero__halo {
  fill: #2a78d6;
  opacity: 0.06;
}

.hero__dot--0 {
  fill: #86b6ef;
}

.hero__dot--1 {
  fill: #3987e5;
}

.hero__dot--2 {
  fill: #b7d3f6;
  opacity: 0.8;
}

.hero__dot--3 {
  fill: #eb6834;
  opacity: 0.85;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--hero-ink) 18%, color-mix(in srgb, var(--hero-ink) 55%, transparent) 55%, transparent 85%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--page-max);
  margin: 0 auto;
  padding: clamp(56px, 9vw, 104px) var(--gutter) clamp(64px, 9vw, 112px);
}

.hero__copy {
  max-width: 680px;
}

.eyebrow--hero {
  color: #86b6ef;
}

.hero h1 {
  color: #fff;
  font-size: clamp(34px, 5.2vw, 56px);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 700;
}

.hero__em {
  background: linear-gradient(90deg, #86b6ef, #eb9a74);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__lede {
  margin: 20px 0 28px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.6;
  color: var(--hero-muted);
  max-width: 60ch;
}

.hero__examples {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  font-size: 13px;
  color: var(--hero-muted);
}

.hero__examples .chip {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  color: #dbe7f6;
}

.hero__examples .chip:hover {
  border-color: #86b6ef;
  color: #fff;
}

/* ───────────────────────── home */
.statstrip {
  margin: -56px 0 0;
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.statstrip__item {
  padding: 20px 20px 18px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.statstrip__item:last-child {
  border-right: 0;
}

.statstrip__value {
  margin: 0;
  font-size: clamp(22px, 2.3vw, 28px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.15;
}

.statstrip__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  margin-top: 4px;
}

.statstrip__note {
  font-size: 12px;
  color: var(--muted);
}

@media (max-width: 1080px) {
  .statstrip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .statstrip__item:nth-child(3n) {
    border-right: 0;
  }
  .statstrip__item:nth-child(-n + 3) {
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 560px) {
  .statstrip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .statstrip__item {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .statstrip__item:nth-child(odd) {
    border-right: 1px solid var(--line);
  }
  .statstrip__item:nth-last-child(-n + 2) {
    border-bottom: 0;
  }
}

.concept {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  gap: 28px 48px;
  padding: 40px 0 8px;
}

.concept__intro h2 {
  font-size: clamp(24px, 2.6vw, 30px);
  letter-spacing: -0.025em;
}

.concept__intro p:not(.eyebrow) {
  margin-top: 14px;
  color: var(--ink-2);
  line-height: 1.65;
}

.concept__intro em {
  font-style: normal;
  font-weight: 600;
  color: var(--ink);
}

.concept__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  counter-reset: step;
}

.concept__steps li {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.concept__steps li:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 38px;
  right: -13px;
  width: 10px;
  height: 10px;
  border-top: 1.5px solid var(--line-strong);
  border-right: 1.5px solid var(--line-strong);
  transform: rotate(45deg);
}

.concept__icon {
  display: inline-flex;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent-strong);
  margin-bottom: 14px;
}

.concept__icon svg {
  width: 18px;
  height: 18px;
}

.concept__steps h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.concept__steps p {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.55;
}

.fidelity-scale {
  grid-column: 2;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
}

.fidelity-scale__title {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  margin-bottom: 12px;
}

.fidelity-scale ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2px;
}

.fidelity-scale li {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.fidelity-scale li .swatch {
  width: 100%;
  height: 10px;
  border-radius: 2px;
}

.fidelity-scale li:first-child .swatch {
  border-radius: 5px 2px 2px 5px;
}

.fidelity-scale li:last-child .swatch {
  border-radius: 2px 5px 5px 2px;
}

.fidelity-scale li span {
  display: flex;
  flex-direction: column;
  font-size: 13px;
}

.fidelity-scale small {
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 960px) {
  .concept {
    grid-template-columns: 1fr;
  }
  .fidelity-scale {
    grid-column: 1;
  }
}

@media (max-width: 640px) {
  .concept__steps {
    grid-template-columns: 1fr;
  }
  .concept__steps li::after {
    display: none;
  }
  .fidelity-scale ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 12px;
  }
}

.block {
  padding-top: 24px;
}

.block__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.block__head h2 {
  font-size: clamp(22px, 2.3vw, 26px);
  letter-spacing: -0.02em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: 16px;
}

.feature {
  position: relative;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 18px;
  color: var(--ink);
  text-decoration: none !important;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.feature:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-1px);
}

.feature__glyph {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: 14px;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature__glyph svg {
  width: 64px;
  height: 64px;
}

.glyph__edge {
  stroke: var(--line-strong);
  stroke-width: 1;
}

.glyph__halo {
  fill: var(--accent);
  opacity: 0.08;
}

.glyph__dot--0 {
  fill: var(--fid-low);
}

.glyph__dot--1 {
  fill: var(--fid-high);
}

.glyph__dot--2 {
  fill: var(--holo);
}

.feature__body {
  min-width: 0;
  flex: 1;
}

.feature h3 {
  font-size: 15.5px;
}

.feature p {
  font-size: 13.5px;
  color: var(--muted);
  margin-top: 4px;
  line-height: 1.45;
}

.feature__meta {
  display: flex;
  gap: 10px;
  font-size: 12px;
  color: var(--faint);
  margin-top: 10px;
}

.feature__nums {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
}

.feature__nums b {
  color: var(--ink);
  font-weight: 650;
}

.feature__arrow {
  position: absolute;
  right: 16px;
  top: 18px;
  width: 16px;
  height: 16px;
  color: var(--faint);
  transition: transform 0.15s, color 0.15s;
}

.feature:hover .feature__arrow {
  transform: translateX(3px);
  color: var(--accent-strong);
}

.glance {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 16px;
}

.glance .card__kicker {
  margin-bottom: 14px;
}

.glance__split {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.glance__split .card__title {
  margin-bottom: 12px;
}

@media (max-width: 900px) {
  .glance {
    grid-template-columns: 1fr;
  }
}

.cta {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 32px;
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, var(--hero-ink) 0%, var(--hero-ink-2) 100%);
  color: var(--hero-muted);
  flex-wrap: wrap;
}

.cta__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(134, 182, 239, 0.14);
  color: #86b6ef;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cta__icon svg {
  width: 26px;
  height: 26px;
}

.cta__text {
  flex: 1 1 320px;
}

.cta h2 {
  color: #fff;
  font-size: 21px;
}

.cta p {
  margin-top: 6px;
}

.cta code {
  color: #dbe7f6;
  background: rgba(255, 255, 255, 0.08);
  padding: 1px 6px;
  border-radius: 5px;
  font-size: 0.9em;
}

.cta__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.cta .btn--ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

.cta .btn--ghost:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* ───────────────────────── page heads */
.page-head {
  padding-top: 8px;
}

.page-head h1 {
  font-size: clamp(26px, 3vw, 34px);
  letter-spacing: -0.025em;
}

.page-head__sub {
  margin-top: 10px;
  color: var(--muted);
  max-width: 72ch;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.page-head--row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.section-title {
  font-size: 18px;
  margin-top: 16px;
}

.crumbs {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  color: var(--faint);
  flex-wrap: wrap;
}

.crumbs a {
  color: var(--muted);
}

.crumbs span:last-child {
  color: var(--ink-2);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.filters__reset {
  margin-bottom: 3px;
}

/* ───────────────────────── entity head (sequence / chain) */
.entity-head {
  display: flex;
  gap: 24px;
  align-items: stretch;
  justify-content: space-between;
  flex-wrap: wrap;
}

.entity-head__main {
  flex: 1 1 480px;
  min-width: 0;
}

.entity-head h1 {
  font-size: clamp(30px, 3.6vw, 40px);
  letter-spacing: -0.03em;
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.entity-head__chain {
  font-size: 0.6em;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: -0.01em;
}

.entity-head__desc {
  margin-top: 8px;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.5;
  max-width: 80ch;
  min-height: 1.5em;
}

.entity-head__links {
  display: flex;
  align-items: center;
  gap: 8px 18px;
  flex-wrap: wrap;
  margin-top: 16px;
  font-size: 14px;
}

.kpis {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(96px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  align-self: flex-start;
}

.kpis > div {
  background: var(--surface);
  padding: 14px 16px;
}

.kpis dt {
  font-size: 12px;
  color: var(--muted);
}

.kpis dd {
  margin: 2px 0 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.kpi-grid {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr));
  gap: 12px;
}

.kpi-grid > div {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.kpi-grid dt {
  font-size: 12.5px;
  color: var(--muted);
}

.kpi-grid dd {
  margin: 4px 0 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.family-card {
  flex: 0 1 300px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink-2);
  text-decoration: none !important;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s, box-shadow 0.15s;
  align-self: flex-start;
}

@media (max-width: 700px) {
  .family-card {
    flex-basis: 100%;
  }
}

.family-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.family-card .eyebrow {
  margin: 0;
}

.family-card__id {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

.family-card__nums {
  display: flex;
  gap: 16px;
  font-size: 14px;
}

.family-card__nums b {
  color: var(--ink);
}

.family-card__state {
  font-size: 13px;
  color: var(--muted);
}

.family-card__go {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  font-weight: 600;
  font-size: 13.5px;
  color: var(--accent-strong);
}

.family-card__go svg {
  width: 15px;
  height: 15px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  align-items: start;
}

.grid-2--single {
  grid-template-columns: 1fr;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  align-items: start;
}

@media (max-width: 1000px) {
  .grid-3 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 800px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

.details-text {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
  background: var(--surface-2);
  border-radius: var(--radius);
  padding: 10px 12px;
  overflow-wrap: anywhere;
}

.binders {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.binder {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  padding: 5px 10px 5px 6px;
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--holo) 35%, var(--line));
  background: color-mix(in srgb, var(--holo) 7%, var(--surface));
  color: var(--ink-2);
  font-size: 12.5px;
  text-decoration: none !important;
}

.binder__id {
  font-weight: 700;
  color: var(--ink);
  background: var(--surface);
  border-radius: 5px;
  padding: 1px 6px;
}

.binder__name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-foot-note {
  text-align: center;
}

/* ───────────────────────── states */
.landscape__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
  max-height: 460px;
  overflow-y: auto;
  padding: 2px;
}

.state-tile {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

.state-tile:hover {
  border-color: var(--line-strong);
  background: var(--surface-2);
}

.state-tile.is-selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.state-tile.is-home {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
}

.state-tile__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}

.state-tile__name {
  font-weight: 600;
  font-size: 13px;
}

.state-tile__n {
  font-size: 12px;
  color: var(--muted);
}

.state-tile__dots {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  align-items: center;
}

.state-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--apo);
}

.state-dot.is-holo {
  background: var(--holo);
}

.state-dot.is-hi {
  box-shadow: 0 0 0 2px var(--surface), 0 0 0 3.5px var(--ink);
}

.legend-dot {
  background: var(--apo);
}

.state-tile__more {
  font-size: 11px;
  color: var(--muted);
  margin-left: 2px;
}

.landscape__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12.5px;
}

.landscape__foot .legend {
  margin-top: 12px;
}

.heatmap {
  position: relative;
  overflow-x: auto;
}

.heatmap svg {
  display: block;
  margin: 0 auto;
}

.heatmap__cell {
  cursor: pointer;
  transition: opacity 0.12s;
}

.heatmap__scale {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  margin-top: 14px;
  font-size: 12px;
  color: var(--muted);
}

.heatmap__step {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* ───────────────────────── chain page */
.neighbourhood {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 28px;
  align-items: start;
}

.neighbourhood__side {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

@media (max-width: 900px) {
  .neighbourhood {
    grid-template-columns: 1fr;
  }
  .neighbourhood__side {
    padding-left: 0;
    border-left: 0;
  }
}

.scatter__pt {
  cursor: pointer;
  transition: r 0.12s;
}

.scatter__pt:hover {
  r: 6.5;
}

.scatter__pt.is-sel {
  stroke: var(--ink) !important;
  stroke-width: 2.5 !important;
}

.callout {
  padding: 12px 14px;
  border-radius: var(--radius);
  background: var(--surface-2);
}

.callout .eyebrow {
  margin-bottom: 4px;
}

.callout__btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--ink);
  font-size: 13px;
  text-align: left;
}

.callout__btn span:last-child {
  color: var(--muted);
}

.callout__btn:hover .mono {
  color: var(--accent-strong);
}

.compare {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  box-shadow: 0 0 0 4px var(--accent-soft);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.compare__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

.compare__head h2 {
  font-size: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.compare__arrow {
  width: 18px;
  height: 18px;
  color: var(--faint);
}

.compare__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.compare__metrics {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
  margin: 18px 0;
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  border-radius: var(--radius);
  background: var(--surface-2);
}

.metric > span:first-child {
  font-size: 12px;
  color: var(--muted);
}

.metric b {
  font-size: 18px;
  font-weight: 700;
}

.metric small {
  font-size: 12px;
  color: var(--muted);
}

.compare__body {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 28px;
}

@media (max-width: 860px) {
  .compare__body {
    grid-template-columns: 1fr;
  }
}

.compare__sub {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  margin-bottom: 12px;
}

.table--compare th[scope='row'] {
  position: static;
  background: transparent;
  border-bottom: 1px solid var(--line);
  font-weight: 500;
  color: var(--muted);
}

.table--compare thead th {
  font-size: 12.5px;
  color: var(--ink);
}

.compare__viewers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

@media (max-width: 760px) {
  .compare__viewers {
    grid-template-columns: 1fr;
  }
}

.deltas {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.deltas li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) 76px;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.deltas__label {
  color: var(--ink-2);
}

.deltas__track {
  position: relative;
  height: 12px;
  background: var(--surface-2);
  border-radius: 3px;
}

.deltas__mid {
  position: absolute;
  left: 50%;
  top: -3px;
  bottom: -3px;
  width: 1px;
  background: var(--axis);
}

.deltas__bar {
  position: absolute;
  top: 0;
  bottom: 0;
}

.deltas__bar.is-up {
  background: var(--pos);
  border-radius: 0 3px 3px 0;
}

.deltas__bar.is-down {
  background: var(--neg);
  border-radius: 3px 0 0 3px;
}

.deltas__val {
  text-align: right;
  font-weight: 600;
}

.viewer {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
}

.viewer__canvas {
  position: absolute;
  inset: 0;
}

.viewer__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
  background: var(--surface);
}

.viewer__overlay svg {
  width: 18px;
  height: 18px;
}

.viewer__label {
  position: absolute;
  left: 10px;
  bottom: 10px;
  z-index: 2;
  font-size: 12px;
  font-family: var(--font-mono);
  padding: 3px 8px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  border: 1px solid var(--line);
  pointer-events: none;
}

/* ───────────────────────── functions & sequence */
.fnlist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.fnlist__item {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) 96px;
  gap: 12px;
  align-items: start;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
}

.fnlist__item:last-child {
  border-bottom: 0;
}

.fnlist__rank {
  font-size: 12px;
  color: var(--faint);
  padding-top: 1px;
}

.fnlist__text {
  color: var(--ink-2);
  line-height: 1.5;
}

.fnlist__score {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}

.fnlist__bar {
  width: 100%;
  height: 5px;
  background: var(--surface-3);
  border-radius: 3px;
  overflow: hidden;
}

.fnlist__bar span {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
}

.seqtrack__bar {
  display: flex;
  justify-content: flex-end;
  margin: -6px 0 10px;
}

.seqtrack__actions {
  display: flex;
  gap: 8px;
}

.coverage-track {
  position: relative;
  height: 8px;
  border-radius: 4px;
  background: var(--surface-3);
  margin-bottom: 22px;
}

.coverage-track__seg {
  position: absolute;
  top: 0;
  bottom: 0;
  background: var(--accent);
  border-radius: 4px;
}

.coverage-track__labels {
  position: absolute;
  top: 12px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--faint);
}

.seqtrack__body {
  background: var(--surface-2);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 12.5px;
  line-height: 1.8;
  overflow-x: auto;
}

.seqtrack__line {
  display: flex;
  gap: 14px;
  white-space: nowrap;
}

.seqtrack__num {
  width: 36px;
  text-align: right;
  color: var(--faint);
  user-select: none;
  flex-shrink: 0;
}

.seqtrack__res {
  display: flex;
  gap: 10px;
  color: var(--ink);
  letter-spacing: 0.04em;
}

.res-off {
  color: var(--faint);
  opacity: 0.55;
}

.seqtrack__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  flex-wrap: wrap;
  font-size: 12.5px;
}

.res-key {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--surface-3);
  vertical-align: -1px;
  margin-right: 4px;
}

/* ───────────────────────── statistics */
.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.chart-card {
  margin: 0;
}

.chart-card figcaption {
  margin-bottom: 14px;
}

.chart-card--wide {
  grid-column: span 2;
}

@media (max-width: 860px) {
  .chart-grid {
    grid-template-columns: 1fr;
  }
  .chart-card--wide {
    grid-column: auto;
  }
}

/* ───────────────────────── docs */
.docs {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.docs__toc {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: calc(100vh - var(--header-h) - 48px);
  overflow-y: auto;
  font-size: 13px;
}

.docs__toc-link {
  color: var(--muted);
  padding: 4px 10px;
  border-left: 2px solid var(--line);
}

.docs__toc-link--3 {
  padding-left: 22px;
  font-size: 12.5px;
}

.docs__toc-link:hover {
  color: var(--ink);
  text-decoration: none;
}

.docs__toc-link.is-active {
  color: var(--accent-strong);
  border-left-color: var(--accent);
  font-weight: 600;
}

@media (max-width: 900px) {
  .docs {
    grid-template-columns: 1fr;
  }
  .docs__toc {
    display: none;
  }
}

.markdown {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 40px);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-2);
  min-width: 0;
}

.markdown > :first-child {
  margin-top: 0;
}

.markdown h1 {
  font-size: 28px;
  margin: 0 0 16px;
}

.markdown h2 {
  font-size: 22px;
  margin: 40px 0 14px;
  padding-top: 8px;
  position: relative;
}

.markdown h3 {
  font-size: 17px;
  margin: 28px 0 10px;
  position: relative;
}

.markdown .anchor {
  position: absolute;
  left: -20px;
  color: var(--faint);
  opacity: 0;
  text-decoration: none;
}

.markdown h2:hover .anchor,
.markdown h3:hover .anchor {
  opacity: 1;
}

.markdown p,
.markdown ul,
.markdown ol {
  margin: 0 0 14px;
}

.markdown hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 28px 0;
}

.markdown strong {
  color: var(--ink);
}

.markdown code {
  font-size: 0.86em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  padding: 1px 5px;
  border-radius: 5px;
  color: var(--ink);
}

.markdown pre {
  background: var(--hero-ink);
  color: #dbe7f6;
  padding: 16px 18px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
  margin: 0 0 18px;
}

.markdown pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

.markdown table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  margin: 0 0 18px;
}

.markdown th,
.markdown td {
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.markdown th {
  background: var(--surface-2);
  font-size: 12.5px;
  color: var(--muted);
  font-weight: 600;
}

.markdown td:first-child code {
  white-space: nowrap;
}

.not-found {
  padding-top: 80px;
  padding-bottom: 80px;
}

.not-found h1 {
  font-size: 32px;
  margin-bottom: 12px;
}

/* ───────────────────────── identifiers & domains */
.idlist {
  margin: 0;
  display: flex;
  flex-direction: column;
}

.idlist__row {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.idlist__row:last-child {
  border-bottom: 0;
}

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

.idlist__row dd {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  min-width: 0;
}

.idstack {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.idchip {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
}

.idchip__name {
  color: var(--ink-2);
  font-size: 13px;
}

.idchip__more {
  font-size: 12px;
}

@media (max-width: 520px) {
  .idlist__row {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}

/* ───────────────────────── order / disorder */
.order-cell {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.order-cell__plus {
  color: var(--ink);
  font-weight: 600;
}

.order-cell__minus {
  color: var(--muted);
}

.evid {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 5px;
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--line);
  text-transform: capitalize;
}

.evid--high {
  background: color-mix(in srgb, var(--ord) 18%, var(--surface));
  border-color: color-mix(in srgb, var(--ord) 50%, var(--line));
  color: var(--ink);
}

.evid--medium {
  background: color-mix(in srgb, var(--ord) 9%, var(--surface));
  color: var(--ink-2);
}

.orderview {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.orderview__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font-size: 13.5px;
  color: var(--ink-2);
  align-items: center;
}

.orderview__stats > span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.order-track {
  position: relative;
  height: 12px;
  border-radius: 4px;
  background: var(--surface-3);
  margin: 16px 0 24px;
}

.order-track__seg {
  position: absolute;
  top: 0;
  bottom: 0;
  border-radius: 2px;
}

.order-track__seg--ord {
  background: var(--ord);
}

.order-track__seg--dis {
  background: var(--disord);
}

.order-track__labels {
  position: absolute;
  top: 16px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--faint);
}

.orderview__ranges {
  overflow-wrap: anywhere;
}

.neighbour-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--ink-2);
  font-size: 13.5px;
  text-decoration: none !important;
}

.neighbour-link:hover {
  background: var(--accent-soft);
}

.neighbour-link .eyebrow {
  margin: 0;
}

/* ───────────────────────── knowledge graph */
.block__sub {
  margin-top: 8px;
  color: var(--muted);
  max-width: 88ch;
  line-height: 1.6;
}

.kg {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.kg__picks .chip {
  cursor: pointer;
}

.chip.is-on {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-ink);
}

.kg__panels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

@media (max-width: 960px) {
  .kg__panels {
    grid-template-columns: 1fr;
  }
}

.kg__panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.kg__head {
  margin-bottom: 10px;
}

.kg__head .eyebrow {
  margin-bottom: 2px;
}

.kg__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 12px;
}

.kg__foot:only-of-type {
  justify-content: flex-end;
}

.legend-line {
  display: inline-block;
  width: 16px;
  height: 3px;
  border-radius: 2px;
}

.swatch--sel {
  background: var(--surface);
  box-shadow: inset 0 0 0 2.5px var(--holo);
}

.chart-tip__wrap {
  white-space: normal;
  max-width: 260px;
  color: var(--muted);
  font-size: 12px;
  margin: 2px 0 6px;
}

/* live force graph */
.fg {
  position: relative;
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  background:
    radial-gradient(circle at 1px 1px, var(--grid) 1px, transparent 0) 0 0 / 18px 18px,
    var(--surface);
  touch-action: none;
  user-select: none;
}

.fg svg {
  display: block;
}

.fg__node {
  stroke: var(--surface);
  stroke-width: 1.5;
  cursor: grab;
  transition: r 0.15s;
}

.fg__node:active {
  cursor: grabbing;
}

.fg__node.is-ring {
  stroke: var(--holo);
  stroke-width: 3.5;
}

.fg__hull {
  fill-opacity: 0.1;
  stroke-opacity: 0.45;
  stroke-width: 1.2;
  stroke-dasharray: 4 3;
  pointer-events: none;
}

.fg__hull-label {
  font-size: 11px;
  font-weight: 600;
  fill: var(--muted);
  paint-order: stroke;
  stroke: var(--surface);
  stroke-width: 3px;
  pointer-events: none;
}

.fact-note {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* ───────────────────────── structure comparison */
.sdiff {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sdiff__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
}

.sdiff__stats {
  flex: 1 1 320px;
  margin: 0;
}

.sdiff__legend {
  margin-top: 0;
}

.sdiff__track {
  display: flex;
  height: 16px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--surface-2);
}

.sdiff__cell {
  flex: 1 1 0;
  min-width: 0;
}

.sdiff__cell.is-empty {
  background: transparent;
}

.sdiff__cell:hover {
  outline: 1.5px solid var(--ink);
  outline-offset: -1px;
}

.sdiff__axis {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 11.5px;
  color: var(--faint);
  margin-top: -6px;
}

/* full per-residue order track: both / ordered / disordered / neither */
.order-track--full {
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

.order-track__seg--both,
.order-key--both {
  background: color-mix(in srgb, var(--accent) 22%, var(--surface));
}

.order-track__seg--ord {
  background: var(--ord);
}

.order-track__seg--dis {
  background: var(--disord);
}

.order-track__seg--none {
  background: repeating-linear-gradient(135deg, transparent 0 3px, var(--line) 3px 4px);
}

.order-key--none {
  background: var(--surface);
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

.order-legend {
  margin: -8px 0 6px;
}

/* ───────────────────────── binding partners */
.pchips {
  display: inline-flex;
  flex-wrap: nowrap;
  gap: 4px;
  align-items: center;
}

.pchip {
  display: inline-flex;
  align-items: center;
  height: 20px;
  padding: 0 7px;
  border-radius: 999px;
  font-size: 11.5px;
  white-space: nowrap;
  background: var(--surface-2);
  color: var(--ink-2);
  border: 1px solid var(--line);
}

.pchip--self {
  background: transparent;
  color: var(--muted);
  border-style: dashed;
}

.pchip--protein {
  background: var(--accent-soft);
  color: var(--accent-ink);
  border-color: transparent;
}

.pchip--dna,
.pchip--rna,
.pchip--hybrid {
  background: color-mix(in srgb, var(--holo) 14%, transparent);
  color: var(--ink);
  border-color: transparent;
}

.pchip.is-gained {
  box-shadow: inset 0 0 0 1.5px var(--accent);
  font-weight: 600;
}

.pchip--more {
  background: transparent;
}

.pchip--lost {
  background: transparent;
  color: var(--pos);
  border-color: color-mix(in srgb, var(--pos) 40%, transparent);
}

.partner-name {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.partner-name__text {
  font-weight: 550;
  color: var(--ink);
}

.partner-name__ids {
  display: flex;
  gap: 10px;
  margin-top: 2px;
  font-size: 12px;
}

.ptype {
  font-size: 10.5px;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent-ink);
  white-space: nowrap;
}

.ptype--dna,
.ptype--rna,
.ptype--hybrid {
  background: color-mix(in srgb, var(--holo) 16%, transparent);
  color: var(--ink);
}

.ptype-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
  flex: none;
  background: var(--accent);
}

.ptype-dot--self {
  background: transparent;
  border: 1.5px dashed var(--muted);
}

.ptype-dot--dna,
.ptype-dot--rna,
.ptype-dot--hybrid {
  background: var(--holo);
}

.pkind {
  font-size: 12px;
  font-weight: 550;
  white-space: nowrap;
}

.pkind--bio {
  color: var(--accent-strong);
}

.pkind--homo {
  color: var(--ink-2);
}

.pkind--weak {
  color: var(--faint);
}

tr.is-dim td {
  color: var(--muted);
}

.istrip {
  position: relative;
  display: block;
  min-width: 220px;
  height: 12px;
  border-radius: 3px;
  background: var(--surface-3);
  overflow: hidden;
}

.istrip__seg {
  position: absolute;
  top: 0;
  bottom: 0;
  background: var(--accent);
}

tr.is-dim .istrip__seg {
  background: var(--faint);
}

.partners-toggle {
  margin-top: 10px;
}

.pmatrix-wrap {
  overflow-x: auto;
}

.pmatrix {
  border-collapse: separate;
  border-spacing: 2px;
  font-size: 12.5px;
}

.pmatrix th {
  font-weight: 550;
  color: var(--muted);
  text-align: center;
}

.pmatrix tbody th {
  text-align: left;
}

.pmatrix__corner {
  text-align: left !important;
  font-size: 11.5px;
}

.pmatrix__partner,
.pmatrix__state {
  border: 0;
  background: transparent;
  font: inherit;
  color: var(--ink-2);
  cursor: pointer;
  padding: 3px 6px;
  border-radius: 6px;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
}

.pmatrix__partner:hover,
.pmatrix__state:hover {
  background: var(--surface-2);
}

.pmatrix__partner.is-on,
.pmatrix__state.is-on {
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-weight: 650;
}

.pmatrix__cell {
  min-width: 34px;
  height: 26px;
  text-align: center;
  border-radius: 4px;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.seq-bg-0 { background: var(--surface-2); }
.seq-bg-1 { background: var(--seq-1); }
.seq-bg-2 { background: var(--seq-2); }
.seq-bg-3 { background: var(--seq-3); color: #fff; }
.seq-bg-4 { background: var(--seq-4); color: #fff; }
.seq-bg-5 { background: var(--seq-5); color: #fff; }

.pmatrix__label {
  display: inline-block;
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  vertical-align: bottom;
}

.pmatrix__acc {
  margin-left: 6px;
  font-size: 11px;
  color: var(--muted);
}

.barlist--wide .barlist__row {
  grid-template-columns: minmax(120px, 260px) minmax(0, 1fr) auto;
}

.binding__summary {
  margin-top: 4px;
}

.binding__text {
  font-size: 15px !important;
}

.binding__sub {
  margin: 22px 0 10px;
  font-size: 14px;
  font-weight: 650;
  color: var(--ink);
}

.binding__sub span {
  margin-left: 8px;
  font-size: 12.5px;
  font-weight: 400;
  color: var(--muted);
}

/* Two-column card flow: each column stacks independently, so a short card does
   not leave a gap beside a tall one. */
.masonry {
  columns: 2;
  column-gap: 20px;
  margin-bottom: -20px;
}

.masonry > * {
  break-inside: avoid;
  margin: 0 0 20px;
  display: block;
  width: 100%;
}

@media (max-width: 800px) {
  .masonry {
    columns: 1;
  }
}

/* superposed comparison: our hover line names the real chain and its Cα
   deviation, so hide Mol*'s generic first line (file URL, model, chain A/B) */
.sdiff .msp-highlight-simple-row:first-child:not(:last-child) {
  display: none;
}

.pchips--stacked {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  max-width: 100%;
}

.pchips--stacked .pchip {
  height: auto;
  min-height: 20px;
  padding: 2px 8px;
  white-space: normal;
  line-height: 1.35;
  max-width: 100%;
}

/* long partner names wrap inside the comparison table instead of spilling into the energy column */
.table--compare td {
  overflow-wrap: anywhere;
}