/* Vessari, design two: Strip Chart
   One continuous sheet of chart stock. No dark surface anywhere. */

:root {
  --paper: #E3E6E0;
  --paper-lit: #EEF0EA;
  --paper-hi: #F7F8F5;
  --grid: #C7CDC3;
  --graphite: #191F1D;
  --graphite-2: #5A635E;
  --pen-violet: #57379B;
  --pen-clay: #9C4A2F;

  --rule-minor: rgba(25, 31, 29, 0.045);
  --rule-major: rgba(25, 31, 29, 0.085);

  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);

  --f-display: "Barlow Semi Condensed", "Arial Narrow", system-ui, sans-serif;
  --f-body: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-data: "DM Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --t-readout: clamp(3.25rem, 9vw, 6rem);
  --t-h1: clamp(2.125rem, 5vw, 3.25rem);
  --t-h2: 1.625rem;
  --t-h3: 1.125rem;
  --t-lede: 1.3125rem;
  --t-body: 1.0625rem;
  --t-data: 0.875rem;
  --t-tick: 0.75rem;
  --t-label: 0.6875rem;

  --head-h: 56px;
  --rail-w: 72px;
  --lane-gutter: 116px;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  color: var(--graphite);
  font-family: var(--f-body);
  font-size: var(--t-body);
  line-height: 1.62;
  background-color: var(--paper);
  background-image:
    repeating-linear-gradient(to right, var(--rule-major) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(to bottom, var(--rule-major) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(to right, var(--rule-minor) 0 1px, transparent 1px 8px),
    repeating-linear-gradient(to bottom, var(--rule-minor) 0 1px, transparent 1px 8px);
  background-position: 0 0;
}

::selection { background: var(--pen-violet); color: var(--paper-hi); }

a { color: var(--pen-violet); text-underline-offset: 2px; text-decoration-thickness: 1px; }
a:hover { color: var(--graphite); }

:focus-visible {
  outline: 2px solid var(--pen-violet);
  outline-offset: 2px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 20;
  background: var(--paper-lit);
  border: 1px solid var(--grid);
  padding: 8px 12px;
  font-family: var(--f-data);
  font-size: var(--t-data);
}
.skip:focus { left: 8px; top: 8px; }

/* ---------- masthead ---------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 10;
  height: var(--head-h);
  background: var(--paper);
  border-bottom: 1px solid var(--grid);
}
.masthead-in {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
}
.wordmark {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1.375rem;
  letter-spacing: 0.06em;
  line-height: 1;
}
.wordmark.small { font-size: 1rem; letter-spacing: 0.08em; }
.masthead-sub {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite-2);
  padding-left: 16px;
  border-left: 1px solid var(--grid);
  line-height: 1;
}
.masthead-link {
  margin-left: auto;
  font-family: var(--f-data);
  font-size: var(--t-data);
  text-decoration: none;
  border-bottom: 1px solid var(--grid);
  white-space: nowrap;
}
.masthead-link:hover { border-bottom-color: var(--graphite); }

@media (max-width: 640px) {
  .masthead-sub { display: none; }
  .masthead-in { padding: 0 16px; gap: 12px; }
  .masthead-link {
    font-size: var(--t-tick);
    white-space: normal;
    text-align: right;
    line-height: 1.15;
  }
}

/* ---------- strip and rail ---------- */

.strip {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px 96px;
  /* One column. This was two, the first sized for a side rail that has been
     replaced by tabs across the top. Leaving the two-column rule in place put
     every child into the narrow rail column and the page collapsed into a
     stack of overlapping text. */
  display: block;
}

.rail {
  position: sticky;
  top: var(--head-h);
  height: calc(100vh - var(--head-h));
  border-right: 1px solid var(--grid);
  padding-top: 40px;
}
.rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.rail-tick {
  display: block;
  padding: 8px 12px 8px 0;
  text-decoration: none;
  color: var(--graphite-2);
  border-top: 1px solid var(--grid);
}
.rail-list li:first-child .rail-tick { border-top: 0; }
.rail-no {
  display: block;
  font-family: var(--f-data);
  font-size: var(--t-data);
  color: var(--graphite);
  line-height: 1.2;
}
.rail-name {
  display: block;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--t-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.3;
}
.rail-marker {
  position: absolute;
  left: -1px;
  top: 0;
  width: 3px;
  height: 1px;
  background: var(--pen-violet);
  transform-origin: left top;
  transform: translateY(0);
  transition: transform 240ms var(--ease-in-out);
  pointer-events: none;
}
@media (hover: hover) and (pointer: fine) {
  .rail-tick:hover { color: var(--graphite); }
}

@media (max-width: 959px) {
  .strip {
    grid-template-columns: minmax(0, 1fr);
    padding: 0 16px 72px;
  }
  .rail {
    position: sticky;
    top: var(--head-h);
    z-index: 9;
    height: auto;
    padding-top: 0;
    border-right: 0;
    border-bottom: 1px solid var(--grid);
    background: var(--paper);
    overflow-x: auto;
    overscroll-behavior-x: contain;
  }
  .rail-list { display: flex; gap: 0; min-width: max-content; }
  .rail-tick {
    border-top: 0;
    border-left: 1px solid var(--grid);
    padding: 6px 12px;
    display: flex;
    align-items: baseline;
    gap: 6px;
  }
  .rail-list li:first-child .rail-tick { border-left: 0; padding-left: 0; }
  .rail-no { display: inline; font-size: var(--t-tick); }
  .rail-name { display: inline; font-size: var(--t-label); }
  .rail-marker {
    left: 0;
    top: auto;
    bottom: -1px;
    width: 1px;
    height: 2px;
    transition: transform 240ms var(--ease-in-out);
  }
}

/* ---------- sheet, headings, copy ---------- */

.sheet { padding-top: 40px; min-width: 0; }

.lede {
  font-size: var(--t-lede);
  line-height: 1.5;
  max-width: 62ch;
  margin: 0 0 28px;
}

.channel {
  padding: 30px 0 34px;
  border-top: 1px solid var(--grid);
  scroll-margin-top: calc(var(--head-h) + 16px);
}
.channel:first-of-type { border-top: 0; padding-top: 0; }

/* Under 960px the rail turns into a second sticky bar under the masthead, so
   an anchor has two bars to clear, not one. */
@media (max-width: 959px) {
  .channel { scroll-margin-top: calc(var(--head-h) + 44px); }
}

.channel-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
}
.channel-no {
  font-family: var(--f-data);
  font-size: var(--t-data);
  color: var(--graphite-2);
}
.h2 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--t-h2);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
  text-transform: uppercase;
}
.h1 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--t-h1);
  line-height: 1.05;
  letter-spacing: -0.015em;
  margin: 0 0 18px;
  max-width: 26ch;
}
.body { max-width: 68ch; margin: 0 0 14px; }
.swap { transition: opacity 180ms ease, filter 180ms ease; }
.swap.is-swapping { opacity: 0.7; filter: blur(2px); }
.cap {
  font-size: var(--t-data);
  font-family: var(--f-body);
  color: var(--graphite-2);
  margin: 8px 0 0;
  max-width: 56ch;
}
.unit { color: var(--graphite-2); font-size: 0.9em; }

/* provenance, only revealed by JS after the values parse */
.prov {
  font-family: var(--f-data);
  font-size: var(--t-tick);
  line-height: 1.5;
  color: var(--graphite-2);
  margin: 12px 0 0;
  max-width: 72ch;
}
.prov .src { display: block; }
.prov[hidden] { display: none; }

.fail {
  font-family: var(--f-data);
  font-size: var(--t-data);
  color: var(--graphite-2);
  border: 1px solid var(--grid);
  border-left: 3px solid var(--graphite-2);
  background: var(--paper-lit);
  padding: 16px;
  margin: 0 0 32px;
}
.fail-note { display: block; margin-top: 6px; }

.missing { color: var(--graphite-2); font-family: var(--f-data); font-size: 0.9em; }

/* ---------- panel meter ---------- */

.meter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 24px;
  margin-bottom: 32px;
}
.meter {
  background: var(--paper-lit);
  border: 1px solid var(--grid);
  border-radius: 3px;
  box-shadow: inset 0 1px 0 var(--paper-hi), 0 1px 0 rgba(25, 31, 29, 0.06);
  padding: 12px 24px 16px;
  min-width: 300px;
  position: relative;
}
.meter::after {
  /* silkscreened corner screws, panel-meter window rather than a card */
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid var(--grid);
  border-radius: 2px;
  pointer-events: none;
}
.meter-label {
  display: block;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite-2);
  margin-bottom: 4px;
}
.meter-digits {
  display: block;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--t-readout);
  line-height: 0.9;
  letter-spacing: -0.02em;
  font-variant-numeric: lining-nums;
}
.meter-digits.missing {
  font-family: var(--f-data);
  font-size: var(--t-h3);
  line-height: 1.35;
  letter-spacing: 0;
  color: var(--graphite-2);
}
.is-void .unit { display: none; }

.meter-err {
  display: block;
  font-family: var(--f-data);
  font-size: var(--t-data);
  color: var(--graphite-2);
  margin-top: 8px;
}
.meter-err .pm { color: var(--pen-violet); }

.meter-side {
  margin: 0;
  flex: 1 1 240px;
  align-self: center;
  min-width: 220px;
}
.meter-side-row {
  display: flex;
  gap: 12px;
  align-items: baseline;
  border-bottom: 1px solid var(--grid);
  padding: 5px 0;
}
.meter-side dt {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite-2);
  min-width: 92px;
}
.meter-side dd {
  margin: 0;
  font-family: var(--f-data);
  font-size: var(--t-data);
}

/* ---------- chips ---------- */

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 20px; }
.chip {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  background: var(--paper-lit);
  border: 1px solid var(--grid);
  border-radius: 3px;
  padding: 4px 10px;
  box-shadow: inset 0 1px 0 var(--paper-hi);
}
.chip-k {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--t-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite-2);
}
.chip-v { font-family: var(--f-data); font-size: var(--t-data); }

/* ---------- disclosure ---------- */

.disclose {
  border-top: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
  padding: 8px 0;
  margin: 24px 0 0;
  max-width: 68ch;
}
.disclose summary {
  cursor: pointer;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite-2);
  list-style-position: outside;
}
.disclose summary::marker { color: var(--grid); }
.rail-tick, .disclose summary {
  transition: transform 140ms var(--ease-out);
  transform-origin: left center;
}
.rail-tick:active, .disclose summary:active { transform: scale(0.97); }
.disclose[open] summary { color: var(--graphite); margin-bottom: 12px; }
.disclose .body { margin-bottom: 8px; }

/* ---------- rails ---------- */

.rail-fig { margin: 0 0 8px; }

.rail-plot {
  background: var(--paper-lit);
  border: 1px solid var(--grid);
  border-radius: 3px;
  box-shadow: inset 0 1px 0 var(--paper-hi), 0 1px 0 rgba(25, 31, 29, 0.06);
  padding: 20px 24px 12px;
  overflow: hidden;
}
.rail-plot[hidden] { display: none; }

.rail-grid {
  display: grid;
  grid-template-columns: var(--lane-gutter) minmax(0, 1fr);
  column-gap: 12px;
}
.rail-gutter { display: flex; flex-direction: column; }
.lane-label {
  height: 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--t-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite-2);
  border-bottom: 1px solid var(--grid);
  text-align: right;
  line-height: 1.25;
}
.lane-label .lane-ink { color: var(--graphite); }
.lane-label.is-violet .lane-ink { color: var(--pen-violet); }
.lane-label.is-clay .lane-ink { color: var(--pen-clay); }

.rail-field { position: relative; }

.rail-rules { position: absolute; inset: 0 0 26px 0; pointer-events: none; }
.rail-rule {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--grid);
}
.rail-rule.is-major { background: #b3bab0; }

.lane {
  position: relative;
  height: 44px;
  border-bottom: 1px solid var(--grid);
}

.band {
  position: absolute;
  top: 8px;
  bottom: 8px;
  border-left: 1px solid rgba(87, 55, 155, 0.5);
  border-right: 1px solid rgba(87, 55, 155, 0.5);
  background-image: repeating-linear-gradient(45deg, var(--pen-violet) 0 1px, transparent 1px 6px);
  clip-path: inset(0 0 0 0);
}
.band.is-clay {
  border-left-color: rgba(156, 74, 47, 0.5);
  border-right-color: rgba(156, 74, 47, 0.5);
  background-image: repeating-linear-gradient(45deg, var(--pen-clay) 0 1px, transparent 1px 11px);
}
.band.is-armed { clip-path: inset(0 50% 0 50%); }
.band.is-armed-right { clip-path: inset(0 0 0 100%); }
.band.is-drawn { clip-path: inset(0 0 0 0); }
.band.is-animated { transition: clip-path 520ms var(--ease-out); }

.pen {
  position: absolute;
  top: 2px;
  bottom: 2px;
  width: 2px;
  margin-left: -1px;
  background: var(--pen-violet);
}
.pen.is-clay { background: var(--pen-clay); }

.pen-flag {
  position: absolute;
  top: 4px;
  font-family: var(--f-data);
  font-size: var(--t-tick);
  line-height: 1;
  color: var(--pen-violet);
  background: var(--paper-lit);
  padding: 1px 4px;
  white-space: nowrap;
}
.pen-flag.is-clay { color: var(--pen-clay); }
.pen-flag.is-left { transform: translateX(-100%); }

.bracket {
  position: absolute;
  bottom: 9px;
  height: 8px;
  border: 1px solid var(--pen-clay);
  border-top: 0;
}
.bracket-label {
  position: absolute;
  bottom: 17px;
  font-family: var(--f-data);
  font-size: var(--t-tick);
  line-height: 1;
  color: var(--pen-clay);
  background: var(--paper-lit);
  padding: 0 4px;
  transform: translateX(-50%);
  white-space: nowrap;
}

.rail-axis { position: relative; height: 26px; }
.axis-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--graphite);
}
.axis-tick {
  position: absolute;
  top: 0;
  width: 1px;
  height: 5px;
  background: var(--graphite);
}
.nocaps { text-transform: none; }

.axis-num {
  position: absolute;
  top: 8px;
  font-family: var(--f-data);
  font-size: var(--t-tick);
  line-height: 1;
  color: var(--graphite-2);
  transform: translateX(-50%);
  white-space: nowrap;
}
.axis-num.at-start { transform: translateX(0); }
.axis-num.at-end { transform: translateX(-100%); }
.axis-title { text-transform: none; letter-spacing: 0.04em; }
@media (max-width: 720px) {
  :root { --lane-gutter: 78px; }
  .rail-plot { padding: 16px 14px 10px; }
  .lane-label { font-size: 0.625rem; letter-spacing: 0.08em; }
}

/* ---------- residual strip ---------- */

.lanes-scroll {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  background: var(--paper-lit);
  border: 1px solid var(--grid);
  border-radius: 3px;
  box-shadow: inset 0 1px 0 var(--paper-hi), 0 1px 0 rgba(25, 31, 29, 0.06);
}
.lanes { min-width: 620px; padding: 16px 20px 12px; }
.lanes[hidden] { display: none; }
.lanes-scroll[hidden] { display: none; }

.rlane {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr) 96px;
  align-items: center;
  column-gap: 12px;
  height: 32px;
  border-bottom: 1px solid var(--grid);
}
.rlane-id {
  font-family: var(--f-data);
  font-size: var(--t-tick);
  color: var(--graphite);
  background: var(--paper-lit);
  position: sticky;
  left: 0;
  z-index: 2;
  padding-right: 8px;
}
.rlane-track { position: relative; height: 100%; }
.rlane-base {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--grid);
}
.rlane-conn {
  position: absolute;
  top: 50%;
  height: 2px;
  margin-top: -1px;
  background: var(--pen-clay);
  opacity: 0.55;
  clip-path: inset(0 0 0 0);
}
.rlane-conn.is-armed-l { clip-path: inset(0 100% 0 0); }
.rlane-conn.is-armed-r { clip-path: inset(0 0 0 100%); }
.rlane-conn.is-drawn { clip-path: inset(0 0 0 0); }
.rlane-conn.is-animated { transition: clip-path 420ms var(--ease-out); }

.rmark {
  position: absolute;
  top: 6px;
  bottom: 6px;
  width: 2px;
  margin-left: -1px;
}
.rmark--meas { background: var(--pen-violet); }
.rmark--pred {
  background: transparent;
  border-left: 2px solid var(--pen-clay);
  top: 10px;
  bottom: 10px;
}
.rlane-d {
  font-family: var(--f-data);
  font-size: var(--t-tick);
  text-align: right;
  color: var(--pen-clay);
  font-variant-numeric: tabular-nums;
}
.rlane-d.is-small { color: var(--graphite-2); }

.rlane.raxis { border-bottom: 0; height: 40px; align-items: start; }
.rlane.raxis .rlane-track { height: 26px; }
.rlane-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding: 10px 20px 0;
  font-family: var(--f-data);
  font-size: var(--t-tick);
  color: var(--graphite-2);
}
.inkmark {
  display: inline-block;
  width: 2px;
  height: 11px;
  vertical-align: -2px;
  margin-right: 6px;
}
.inkmark.is-violet { background: var(--pen-violet); }
.inkmark.is-clay { background: var(--pen-clay); }

@media (max-width: 720px) {
  .rlane { grid-template-columns: 108px minmax(0, 1fr) 76px; }
}

/* ---------- tables ---------- */

.table-wrap { overflow-x: auto; overscroll-behavior-x: contain; margin: 0 0 20px; }
.dtable {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  background: var(--paper-lit);
  border: 1px solid var(--grid);
  box-shadow: inset 0 1px 0 var(--paper-hi), 0 1px 0 rgba(25, 31, 29, 0.06);
  font-family: var(--f-data);
  font-size: var(--t-data);
}
.tcap {
  caption-side: top;
  text-align: left;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite-2);
  padding: 0 0 8px;
}
.dtable th, .dtable td {
  text-align: left;
  padding: 7px 12px;
  border-bottom: 1px solid var(--grid);
  font-weight: 400;
  font-variant-numeric: tabular-nums;
}
.dtable thead th {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--t-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite-2);
  border-bottom: 1px solid #b3bab0;
}
.dtable tbody tr:last-child td { border-bottom: 0; }
.dtable .neg { color: var(--pen-clay); }
.dtable .num, .dtable thead th.num { text-align: right; }
.dtable .idx { color: var(--graphite-2); width: 3.5em; }
@media (hover: hover) and (pointer: fine) {
  .dtable tbody tr:hover td { background: rgba(25, 31, 29, 0.035); }
}
.dtable.admet { min-width: 380px; }

.paths { margin: 0 0 12px; }
.path-row { display: flex; flex-wrap: wrap; gap: 12px; padding: 4px 0; border-bottom: 1px solid var(--grid); }
.paths dt {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--t-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite-2);
  min-width: 132px;
}
.paths dd { margin: 0; font-family: var(--f-data); font-size: var(--t-data); word-break: break-all; }

/* ---------- specimen ---------- */

.specimen {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.95fr);
  gap: 24px;
  align-items: start;
}
@media (max-width: 860px) {
  .specimen { grid-template-columns: minmax(0, 1fr); }
}

.viewer-frame {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--paper-lit);
  border: 1px solid var(--grid);
  border-radius: 3px;
  box-shadow: inset 0 1px 0 var(--paper-hi), 0 1px 0 rgba(25, 31, 29, 0.06);
  overflow: hidden;
}
.viewer-target { position: absolute; inset: 0; }
.viewer-target canvas { display: block !important; width: 100%; height: 100%; }

/* Mol* ships its own stylesheet, which this page does not load.
   These rules give the plugin's containers the size they need. */
.viewer-target .msp-plugin,
.viewer-target .msp-plugin-content,
.viewer-target .msp-layout-standard,
.viewer-target .msp-layout-main,
.viewer-target .msp-layout-region,
.viewer-target .msp-layout-static,
.viewer-target .msp-viewport,
.viewer-target .msp-canvas3d,
.viewer-target .msp-viewport-host3d {
  position: absolute;
  inset: 0;
  margin: 0;
  padding: 0;
  overflow: hidden;
}
.viewer-target .msp-layout-right,
.viewer-target .msp-layout-left,
.viewer-target .msp-layout-top,
.viewer-target .msp-layout-bottom,
.viewer-target .msp-viewport-controls,
.viewer-target .msp-highlight-toast-wrapper,
.viewer-target .msp-hover-box-wrapper,
.viewer-target .msp-drag-drop-overlay,
.viewer-target .msp-background-tasks,
.viewer-target .msp-semi-transparent-background { display: none !important; }

.viewer-target {
  opacity: 0;
  filter: blur(3px);
}
.viewer-target.is-ready { opacity: 1; filter: blur(0); }
.viewer-target.is-animated {
  transition: opacity 200ms var(--ease-out), filter 200ms var(--ease-out);
}

.viewer-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  text-align: center;
  padding: 24px;
  background-image:
    repeating-linear-gradient(to right, var(--rule-minor) 0 1px, transparent 1px 8px),
    repeating-linear-gradient(to bottom, var(--rule-minor) 0 1px, transparent 1px 8px);
}
.viewer-overlay[hidden] { display: none; }
.viewer-status {
  font-family: var(--f-data);
  font-size: var(--t-data);
  color: var(--graphite-2);
  margin: 0;
  max-width: 34ch;
}

.preset-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }

.btn {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite);
  background: var(--paper-lit);
  border: 1px solid var(--grid);
  border-radius: 3px;
  box-shadow: inset 0 1px 0 var(--paper-hi);
  padding: 8px 14px;
  cursor: pointer;
  transition: transform 140ms var(--ease-out), background-color 140ms ease, border-color 140ms ease;
}
.btn:active { transform: scale(0.97); }
.btn[disabled] { color: var(--graphite-2); cursor: not-allowed; opacity: 0.6; }
.btn[aria-pressed="true"] {
  border-color: var(--pen-violet);
  box-shadow: inset 0 0 0 1px var(--pen-violet);
}
.btn-sub {
  display: block;
  font-family: var(--f-data);
  font-size: var(--t-tick);
  letter-spacing: 0;
  text-transform: none;
  color: var(--graphite-2);
  margin-top: 4px;
}
@media (hover: hover) and (pointer: fine) {
  .btn:hover:not([disabled]) { background: var(--paper-hi); border-color: var(--graphite-2); }
}
.linkbtn { display: inline-block; text-decoration: none; }

/* readout */

.readout {
  background: var(--paper-lit);
  border: 1px solid var(--grid);
  border-radius: 3px;
  box-shadow: inset 0 1px 0 var(--paper-hi), 0 1px 0 rgba(25, 31, 29, 0.06);
  padding: 16px 18px;
}
.readout-head { margin: 0 0 12px; }
.readout-name {
  display: block;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--t-h3);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.2;
}
.readout-ids {
  display: block;
  font-family: var(--f-data);
  font-size: var(--t-tick);
  color: var(--graphite-2);
  margin-top: 2px;
}
.readout-list {
  margin: 0;
  border-top: 1px solid var(--grid);
}
.rrow {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  column-gap: 12px;
  padding: 6px 0;
  border-bottom: 1px solid var(--grid);
}
.rrow dt {
  font-family: var(--f-data);
  font-size: var(--t-tick);
  color: var(--graphite-2);
  word-break: break-word;
}
.rrow dd {
  margin: 0;
  font-family: var(--f-data);
  font-size: var(--t-data);
  font-variant-numeric: tabular-nums;
  text-align: right;
  white-space: nowrap;
}
.rrow .err {
  display: block;
  font-size: var(--t-tick);
  color: var(--graphite-2);
}
.rrow .err-none { font-style: normal; }
.rrow.is-flagged dt::after { content: " \2691"; color: var(--pen-clay); }
.flag {
  font-family: var(--f-data);
  font-size: var(--t-tick);
  line-height: 1.5;
  color: var(--graphite-2);
  margin: 12px 0 0;
  border-left: 2px solid var(--pen-clay);
  padding-left: 10px;
}
.flag[hidden] { display: none; }

/* ---------- limits ---------- */

.limits { list-style: none; margin: 0; padding: 0; max-width: 68ch; }
.limits li {
  border-top: 1px solid var(--grid);
  padding: 12px 0;
}
.limit-h {
  display: block;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--t-h3);
  line-height: 1.3;
}

/* ---------- colophon ---------- */

.colophon {
  border-top: 1px solid var(--grid);
  padding-top: 32px;
  margin-top: 8px;
}
.colophon-line { max-width: 68ch; margin: 0 0 12px; font-size: var(--t-data); color: var(--graphite-2); }
.colophon-line a { color: var(--pen-violet); }
.colophon-line.mono { font-family: var(--f-data); font-size: var(--t-tick); word-break: break-all; }
.colophon-line.mono[hidden] { display: none; }
#digest-hex { color: var(--graphite); }

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .band.is-animated,
  .rlane-conn.is-animated,
  .rail-marker,
  .viewer-target.is-animated {
    transition: none;
  }
  .btn { transition: background-color 140ms ease, border-color 140ms ease; }
  .btn:active { transform: none; background: var(--paper-hi); border-color: var(--graphite); }
  .rail-tick, .disclose summary { transition: none; }
  .rail-tick:active, .disclose summary:active { transform: none; color: var(--graphite); }
  .swap { transition: opacity 180ms ease; }
  .swap.is-swapping { filter: none; }
}

/* ---------- programs ---------- */
/* The first thing a visitor reads. A program earns a number beside it only once
 * it has a scaffold separated held-out set big enough to carry an error bar,
 * so the state label is load bearing rather than decorative. */

.programs {
  list-style: none;
  margin: 1.75rem 0 1.25rem;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
  border-radius: 3px;
  overflow: hidden;
}

@media (min-width: 900px) {
  .programs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.program {
  background: var(--paper-lit);
  padding: 1.4rem 1.35rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.program-head { display: flex; flex-direction: column; gap: 0.5rem; }

.program-state {
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--graphite-2);
}

.program-state::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

.program--live .program-state { color: var(--pen-violet); }

.program-name {
  font-family: var(--display);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.008em;
  margin: 0;
  line-height: 1.25;
}

.program-note {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--graphite-2);
}

.program-facts {
  margin: auto 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--grid);
  font-family: var(--mono);
  font-size: 0.75rem;
  display: grid;
  gap: 0.3rem;
}

.program-facts > div { display: flex; justify-content: space-between; gap: 1rem; }
.program-facts dt { color: var(--graphite-2); }
.program-facts dd { margin: 0; font-variant-numeric: tabular-nums; }

.linkbtn + .linkbtn { margin-left: 0.5rem; }

/* ---------- hero ---------- */
/* The structure sits beside the headline rather than three screens down. It is
 * the most legible thing this project produces and a reader should be able to
 * turn it in their hands before reading a word of the argument. */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3.25rem);
  align-items: start;
  margin-bottom: clamp(1.25rem, 2.6vw, 2rem);
}

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

.hero-copy { min-width: 0; }
.hero-copy .h1 { margin-top: 0; }

.hero-viewer {
  margin: 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Taller than wide reads as a specimen plate rather than a banner. */
.hero-viewer .viewer-frame { aspect-ratio: 4 / 3.4; min-height: 300px; }

.hero-viewer .preset-row { margin-top: 0; }

.hero-viewer figcaption {
  margin: 0;
  max-width: 46ch;
}

/* ---------- hero, three tracks ---------- */
/* Copy, then the structure, then the numbers that describe it. The readout used
 * to live four channels further down, which meant the one thing a reader most
 * wants beside a molecule was the one thing furthest from it. */

.hero {
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr) minmax(0, 0.8fr);
  gap: clamp(1.25rem, 2.6vw, 2.5rem);
  align-items: start;
}

.hero-data {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.hero-data .readout { margin: 0; }

/* The numbers are a reference table beside a picture, not a page of body copy. */
.hero-data .readout-list { font-size: 0.75rem; }
.hero-data .cap { margin: 0; font-size: 0.75rem; }

/* Two tracks once three will not fit: copy above, structure and numbers paired. */
@media (max-width: 1200px) {
  .hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
  .hero-copy { grid-column: 1 / -1; }
}

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; }
  .hero-copy { grid-column: auto; }
}

/* ---------- vertical rhythm ---------- */
/* The page was built with generous gaps and it read as sparse rather than calm.
 * These tighten the spaces that were doing the least work: the run-out under a
 * figure, the run-in above a caption, and the space a section leaves when its
 * columns end at different heights. */

.hero { align-content: start; }

.rail-fig { margin: 0 0 18px; }
.rail-fig .cap { margin-top: 8px; }

.channel > .body:last-child { margin-bottom: 0; }
.channel > .cap:last-child { margin-bottom: 0; }

.programs { margin: 14px 0 12px; }

.prov { margin: 6px 0 0; }

/* A short left column should not force the whole hero to the height of the
 * tallest track, and the copy should not stretch to meet it. */
.hero-copy { align-self: start; }
.hero-copy .lede { margin-bottom: 0; }

/* ---------- hero stats ---------- */
/* The copy column ran short against the structure and its numbers, leaving a
 * hole. Filling it with the figures the page is about is better than filling it
 * with air, and it puts the headline result in the first screen again. */

.hero-stats {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--grid);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
}

.hero-stats > div { display: flex; flex-direction: column; gap: 2px; min-width: 0; }

.hero-stats dt {
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--graphite-2);
}

.hero-stats dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 1.375rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  gap: 0.35em;
  flex-wrap: wrap;
}

.hero-stats__pm,
.hero-stats__unit {
  font-size: 0.75rem;
  color: var(--graphite-2);
  letter-spacing: 0;
}

/* ---------- studio badge ---------- */
/* Attribution reads better as a mark at the end than as a line competing with
 * the headline. The rule above it separates the page's own argument from who
 * made it. */

.studio-badge {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  padding: 14px 16px;
  margin: 0 0 18px;
  max-width: 34rem;
  border: 1px solid var(--grid);
  border-radius: 3px;
  background: var(--paper-lit);
  transition: border-color 160ms var(--ease-out), background-color 160ms var(--ease-out);
}

.studio-badge:hover { border-color: var(--graphite-2); }
.studio-badge:active { transform: scale(0.995); }

.studio-badge__mark {
  width: 9px; height: 9px;
  margin-top: 6px;
  flex: none;
  border-radius: 2px;
  background: var(--pen-violet);
}

.studio-badge__text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }

.studio-badge__name {
  font-family: var(--display);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.studio-badge__note {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--graphite-2);
}

/* ADMET table gained a score and a direction. */
.tbl td.num, .tbl th.num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl td.dir, .tbl th.dir {
  font-size: 0.6875rem;
  color: var(--graphite-2);
  white-space: nowrap;
}

/* ---------- verification cases ---------- */
.vcases { list-style: none; margin: 12px 0 14px; padding: 0; display: grid; gap: 1px;
  background: var(--grid); border: 1px solid var(--grid); border-radius: 3px; overflow: hidden; }
.vcase { background: var(--paper-lit); padding: 12px 14px; display: flex;
  flex-direction: column; gap: 4px; }
.vcase-head { margin: 0; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.vcase-verdict { font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.13em;
  text-transform: uppercase; padding: 2px 6px; border-radius: 2px; flex: none; }
.vcase--pass .vcase-verdict { color: #fff; background: var(--pen-violet); }
.vcase--drop .vcase-verdict { color: #fff; background: var(--pen-clay); }
.vcase-name { font-weight: 600; font-size: 0.9375rem; }
.vcase-why { margin: 0; font-size: 0.8125rem; line-height: 1.5; color: var(--graphite-2); }

/* A dense residual trace. One lane per compound across the whole evaluation set,
 * without identifiers, because 119 ids in a column is noise and the ids are in
 * the raw file. */
/* Narrow the id column rather than removing it, so the track gets the width. */
.rlanes--dense .rlane { height: 9px; grid-template-columns: 8px minmax(0, 1fr) 64px; }
/* Not display:none. A grid item set to display:none leaves the grid, and every
 * column after it shifts up one, which put the 1158px track in the 8px slot. */
.rlanes--dense .rlane-id { overflow: hidden; text-indent: -999px; }
.rlanes--dense .rlane-delta { font-size: 0.625rem; }
.rlanes--dense .rlane-track { height: 7px; }
.rlanes--dense .rmark { height: 7px; }
.rlanes--dense .rlane-conn { height: 3px; }
.rlanes--dense .rlane + .rlane { margin-top: 1px; }

/* Tabs.
   Ten sections on one page made a scroll long enough that most readers would
   never reach the end of it. The sections are unchanged; only one group shows
   at a time. */
.tabs{display:flex;flex-wrap:wrap;gap:0;margin:2.5rem 0 0;
      border-bottom:1px solid var(--rule)}
.tab{appearance:none;background:none;border:0;border-bottom:2px solid transparent;
     padding:.7rem 1.1rem .6rem;cursor:pointer;font:inherit;font-size:.78rem;
     letter-spacing:.09em;text-transform:uppercase;color:var(--muted);
     display:flex;align-items:baseline;gap:.5rem;margin-bottom:-1px}
.tab:hover{color:var(--ink)}
.tab[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--ink)}
.tab:focus-visible{outline:2px solid var(--ink);outline-offset:-2px}
.tab-no{font-size:.68rem;opacity:.55;font-variant-numeric:tabular-nums}
.panel{animation:panel-in .18s ease-out}
.panel[hidden]{display:none}
.panel > .channel:first-child{border-top:0;margin-top:1.5rem;padding-top:0}
@keyframes panel-in{from{opacity:0;transform:translateY(3px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.panel{animation:none}}
@media (max-width:640px){
  .tab{padding:.6rem .7rem;font-size:.7rem}
  .tab-name{display:none}
  .tab-no{font-size:.8rem;opacity:1}
}