:root {
  color-scheme: light;
  --paper: #fbfbfa;
  --ink: #1a1a1a;
  --secondary: #5a5a5a;
  --accent: #1f3a8a;
  --rule: #d8d8d4;
  --soft-rule: #e5e5e2;
  --code-bg: #f3f2ef;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background-color: var(--paper);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
  scroll-padding-top: 42px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
}
a { color: var(--accent); text-decoration: none; }
p a, li a, figcaption a, td a, th a, .article-links a, .references a {
  border-bottom: 1px solid rgba(31, 58, 138, .25);
}
p a:hover, li a:hover, figcaption a:hover, td a:hover, th a:hover, .article-links a:hover, .references a:hover {
  border-bottom-color: var(--accent);
}
sup a, .figure-details summary a, .contents nav a { border-bottom: 0; }
a, summary { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; border-radius: 1px; }
::selection { background: #dfe4f5; color: #1a1a1a; }
.skip-link { position: fixed; z-index: 20; left: 20px; top: 12px; padding: 10px 16px; background: var(--paper); transform: translateY(-180%); font-family: var(--sans); }
.skip-link:focus { transform: none; }
.page-layout { max-width: 1144px; margin-inline: auto; padding: 68px 36px 0; display: grid; grid-template-columns: 208px minmax(0, 730px); gap: 76px; align-items: start; }
.contents-rail { position: sticky; top: 44px; max-height: calc(100svh - 76px); overflow-y: auto; scrollbar-width: thin; padding: 3px 8px 12px 0; font-family: var(--sans); }
.rail-title { display: block; width: fit-content; font-size: 19px; font-weight: 700; letter-spacing: -.01em; color: var(--ink); text-decoration: none; margin-bottom: 33px; }
.contents > summary { list-style: none; font-size: 12px; font-weight: 600; color: var(--secondary); padding-bottom: 12px; cursor: pointer; }
.contents > summary::-webkit-details-marker { display: none; }
.contents-toggle { display: none; }
.contents ol { margin: 0; list-style: none; padding: 0; }
.contents nav > ol { border-left: 1px solid var(--rule); }
.contents li { margin: 0; }
.contents nav a { display: block; padding: 7px 8px 7px 16px; margin-left: -1px; border-left: 1px solid transparent; font-size: 12px; line-height: 1.4; text-decoration: none; color: var(--secondary); transition: color 150ms ease, background-color 150ms ease; }
.contents nav a:hover { color: var(--ink); background: rgba(73, 111, 129, .045); }
.contents nav a[aria-current="location"] { color: var(--accent); border-left-color: var(--accent); font-weight: 600; background: rgba(73, 111, 129, .06); }
.contents nav ol ol a { font-size: 11px; padding: 5px 8px 5px 28px; }
.rail-source { display: inline-block; font-size: 11px; margin: 26px 0 0 17px; text-decoration: none; }
.rail-source span { margin-left: 5px; }
main { min-width: 0; padding-bottom: 50px; }
article { font-size: 18px; line-height: 1.75; overflow-wrap: break-word; }
.article-header { padding-bottom: 32px; margin-bottom: 39px; }
h1, h2, h3 { font-weight: 700; text-wrap: balance; }
h1 { font-size: 58px; line-height: 1.05; letter-spacing: -.03em; margin: 0 0 13px; }
.subtitle { font-size: 21px; line-height: 1.4; color: var(--secondary); margin: 0; }
.article-links { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 23px; font-family: var(--sans); font-size: 12px; line-height: 1.7; }
.article-links a { border-bottom-color: rgba(31, 58, 138, .2); }
section { margin-top: 66px; }
.article-header + section { margin-top: 0; }
h2 { font-size: 26px; line-height: 1.25; letter-spacing: -.018em; margin: 0 0 22px; }
h3 { font-size: 19px; line-height: 1.35; margin: 38px 0 15px; }
p { margin: 0 0 20px; }
p:last-child { margin-bottom: 0; }
strong { font-weight: 600; }
ul, ol { margin: 0 0 24px; padding-left: 1.3em; }
li { padding-left: .2em; margin: 0 0 8px; }
li::marker { color: var(--secondary); }
var { font-family: ui-serif, Georgia, serif; }
code { font-family: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace; font-size: .8em; color: var(--ink); background: var(--code-bg); padding: .16em .3em; border-radius: 2px; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
sup { font-family: var(--sans); font-size: 10px; margin-left: 3px; line-height: 0; }
sup a { text-decoration: none; }
sub { font-size: .7em; }
figure { margin: 32px 0 35px; }
img, video { display: block; max-width: 100%; height: auto; }
.drawing > a { display: block; }
.drawing img { width: 100%; background: #fff; }
.drawing a { cursor: zoom-in; }
.wide-drawing { width: calc(100% + 40px); margin-left: -20px; }
.compact-drawing > a { max-width: 430px; margin-inline: auto; }
.portrait-drawing > a { max-width: 550px; margin-inline: auto; }
figcaption { font: 12px/1.65 var(--sans); color: var(--secondary); margin-top: 14px; overflow-wrap: anywhere; }
.caption-label { color: var(--ink); font-weight: 600; }
.figure-reference { font: 12px/1.6 var(--sans); margin-top: 21px; }
.figure-reference span { margin-left: 3px; }
.figure-heading { font: 600 14px/1.5 var(--sans); display: flex; align-items: baseline; flex-wrap: wrap; justify-content: space-between; gap: 8px 20px; }
.figure-heading > span { color: var(--secondary); font-weight: 400; font-size: 11px; }
.chart-figure { padding-top: 21px; }
.chart-legend { display: flex; justify-content: flex-end; gap: 19px; margin-top: 16px; font: 11px/1.5 var(--sans); }
.chart-legend span { display: inline-flex; align-items: center; gap: 7px; }
.chart-legend i { width: 9px; height: 9px; border-radius: 50%; }
.ours-key, .ours-dot { background: #3358c4; fill: #3358c4; }
.paper-key, .paper-dot { background: #8ea9ee; fill: #8ea9ee; }
.model-chart, .frame-chart { display: block; width: 100%; height: auto; margin: 14px 0 16px; overflow: visible; }
.chart-grid { stroke: var(--soft-rule); stroke-width: 1; fill: none; }
.chart-labels, .chart-values { fill: var(--secondary); font-family: var(--sans); font-size: 14px; }
.chart-values { fill: var(--ink); font-weight: 600; }
.chart-join { stroke: #b7c4c5; stroke-width: 2; fill: none; }
.verified-bar { fill: #3358c4; }
.reported-bar { fill: #dde3f6; stroke: #3358c4; stroke-width: 1.5; stroke-dasharray: 4 3; }
.table-scroll { overflow-x: auto; scrollbar-width: thin; }
table { width: 100%; border-collapse: collapse; font: 13px/1.6 var(--sans); font-variant-numeric: tabular-nums; text-align: left; }
th, td { padding: 12px 11px; border-bottom: 1px solid var(--soft-rule); }
th:first-child, td:first-child { padding-left: 0; }
th:last-child, td:last-child { padding-right: 0; }
th { font-weight: 600; }
thead { font-size: 11px; color: var(--secondary); }
thead th { border-bottom-color: var(--rule); }
td:not(:first-child), thead th:not(:first-child) { text-align: right; }
.total-row th, .total-row td { border-top: 1px solid var(--rule); border-bottom: 0; font-weight: 600; }
.separate-evaluation th, .separate-evaluation td { border-top: 2px solid var(--rule); }
.technical-note { font: 13px/1.75 var(--sans); color: var(--secondary); margin: 28px 0; }
.technical-note strong { color: var(--ink); }
.tensor-steps { list-style: none; margin: 22px 0 30px; padding: 0; border-top: 1px solid var(--rule); font: 14px/1.6 var(--sans); }
.tensor-steps li { display: grid; grid-template-columns: minmax(145px, 34%) minmax(0, 1fr); gap: 22px; margin: 0; padding: 13px 0; border-bottom: 1px solid var(--soft-rule); align-items: start; }
.tensor-steps code { width: fit-content; font-size: 12px; white-space: normal; overflow-wrap: anywhere; }
.tensor-steps li > span { min-width: 0; }
.tensor-key { display: grid; grid-template-columns: minmax(145px, 34%) minmax(0, 1fr); gap: 22px; margin: 24px 0 -22px; font: 600 11px/1.5 var(--sans); color: var(--secondary); text-transform: uppercase; letter-spacing: .045em; }
.article-aside { margin: 24px 0 30px; padding: 3px 0 3px 18px; border-left: 1px solid var(--accent); color: var(--secondary); font: 15px/1.7 var(--sans); }
.article-aside p { margin: 0; }
.article-aside code { font-size: .84em; }
.figure-details { margin: 26px 0; }
.figure-details summary { padding: 14px 0; cursor: pointer; color: var(--accent); font: 12px/1.7 var(--sans); }
.figure-details[open] { padding-bottom: 14px; }
.figure-details figure { margin: 12px 0; }
.residual-drawings { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 15px; padding: 8px 0; }
.residual-drawings img { width: 100%; height: auto; }
.equation { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; justify-content: center; margin: 30px 0; padding: 20px 8px; font-size: 20px; }
.sum { display: inline-flex; flex-direction: column; align-items: center; line-height: 1; gap: 4px; }
.sum > :first-child, .sum > :last-child { font-size: 11px; }
.sum > :nth-child(2) { font-size: 32px; }
.results-figure video { width: 100%; background: #202722; }
.references { padding-top: 32px; }
.references h2 { font-size: 25px; }
.references ol { font: 12px/1.8 var(--sans); color: var(--secondary); padding-left: 20px; }
.references li { padding-left: 5px; margin-bottom: 15px; }
.article-footer { display: flex; justify-content: space-between; gap: 16px; padding-top: 22px; margin-top: 45px; font: 11px/1.5 var(--sans); }
.article-footer a { text-decoration: none; }
@media (min-width: 1800px) {
  .page-layout { padding-top: 90px; }
}
@media (max-width: 1100px) {
  .page-layout { padding-inline: 28px; grid-template-columns: 184px minmax(0, 1fr); gap: 44px; }
  .wide-drawing { width: 100%; margin-left: 0; }
}
@media (max-width: 800px) {
  :root { scroll-padding-top: 90px; }
  .page-layout { display: block; padding: 0 25px; max-width: 740px; }
  .contents-rail { z-index: 10; top: 0; margin-inline: -25px; padding: 14px 25px; max-height: min(80svh, 650px); display: grid; grid-template-columns: 1fr auto; column-gap: 18px; background: var(--paper); border-bottom: 1px solid var(--rule); overflow-y: auto; }
  .rail-title { font-size: 18px; line-height: 1.7; margin: 0; }
  .contents { display: contents; }
  .contents > summary { grid-column: 2; grid-row: 1; padding: 6px 0 6px 12px; font-size: 12px; color: var(--ink); }
  .contents-toggle { display: inline-block; margin-left: 10px; vertical-align: middle; }
  .contents[open] .contents-toggle { transform: rotate(180deg); }
  .contents nav { grid-column: 1 / -1; margin-top: 18px; }
  .contents nav a { font-size: 13px; padding-block: 9px; }
  .contents nav ol ol { display: none; }
  .rail-source { display: none; }
  main { padding-top: 45px; }
  h1 { font-size: 64px; }
  .subtitle { font-size: 22px; }
  article { font-size: 18px; }
  section { margin-top: 52px; }
  h2 { font-size: 28px; }
  h3 { font-size: 22px; }
  .article-header { margin-bottom: 32px; padding-bottom: 28px; }
  .chart-labels, .chart-values { font-size: 17px; }
  .table-scroll table { min-width: 420px; }
  .results-figure table { min-width: 550px; }
  .tensor-steps li, .tensor-key { grid-template-columns: minmax(120px, 34%) minmax(0, 1fr); gap: 15px; }
}
@media (max-width: 600px) {
  .chart-labels, .chart-values { font-size: 24px; }
}
@media (max-width: 420px) {
  .page-layout { padding-inline: 21px; }
  .contents-rail { margin-inline: -21px; padding-inline: 21px; }
  h1 { font-size: 58px; }
  .subtitle { font-size: 21px; }
  .article-links { gap: 21px; }
  .equation { font-size: 17px; gap: 6px; }
  .chart-labels, .chart-values { font-size: 32px; }
  .tensor-steps li, .tensor-key { grid-template-columns: minmax(104px, 36%) minmax(0, 1fr); gap: 12px; }
  .tensor-steps { font-size: 13px; }
}
@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}
@media print {
  @page { margin: 20mm 18mm; }
  :root { background: white; color: black; }
  body { background: none; }
  .page-layout { display: block; padding: 0; max-width: none; }
  .contents-rail, .skip-link, .article-links, .article-footer { display: none; }
  main { padding: 0; }
  article { font-size: 11pt; line-height: 1.55; }
  h1 { font-size: 36pt; }
  h2 { font-size: 20pt; }
  h3 { font-size: 14pt; }
  h2, h3 { break-after: avoid; }
  section { margin-top: 28pt; }
  p { orphans: 3; widows: 3; }
  figure, table, .pipeline { break-inside: avoid; }
  .wide-drawing { width: 100%; margin-left: 0; }
  a { color: inherit; }
  .table-scroll { overflow: visible; }
  .table-scroll table { min-width: 0; }
  .portrait-drawing > a { max-width: 380px; }
  video { max-height: 150mm; object-fit: contain; }
}