:root {
  --blue: #1a73e8;
  --blue-dark: #185abc;
  --ink: #202124;
  --body: #3c4043;
  --muted: #5f6368;
  --line: #e4e7eb;
  --panel: #f8f9fa;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  max-width: 1040px;
  margin: 42px auto;
  padding: 0 24px;
  background: #fff;
  color: var(--body);
  font-family: "Google Sans", Arial, sans-serif;
  line-height: 1.58;
}
a { color: var(--blue); }
button { font: inherit; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }

.hero { text-align: center; padding: 0 12px 6px; }
.hero h1 {
  max-width: 940px;
  margin: 0 auto 28px;
  color: var(--ink);
  font-size: clamp(2.1rem, 4.15vw, 2.8rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -.025em;
}
.authors, .affiliations {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  column-gap: 11px;
  row-gap: 3px;
}
.authors { font-size: 1rem; }
.authors span, .affiliations span { white-space: nowrap; }
.authors sup, .affiliations sup, .contributions sup {
  font-size: .72em;
  margin-left: 1px;
}
.affiliations {
  max-width: 920px;
  margin: 14px auto 0;
  color: var(--muted);
  font-size: .91rem;
}
.contributions { margin: 8px 0 29px; color: var(--muted); font-size: .88rem; }
.hero-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 38px;
}
.hero-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 84px;
  padding: 8px 19px;
  border-radius: 8px;
  background: var(--blue);
  box-shadow: 0 2px 4px #0000001a;
  color: #fff;
  font-weight: 500;
  text-decoration: none;
  transition: background-color .2s ease, box-shadow .2s ease;
}
.hero-links a:hover { background: var(--blue-dark); box-shadow: 0 4px 9px #00000026; }
.panel {
  margin: 0 0 30px;
  padding: 30px;
  border: 1px solid #eceef0;
  border-radius: 30px;
  background: var(--panel);
}
.panel h2 {
  margin: 0 0 20px;
  color: var(--ink);
  font-size: 1.86rem;
  font-weight: 500;
  line-height: 1.3;
}
.section-intro { margin: 0 0 24px; font-size: 1.02rem; }
.abstract-panel p { margin: 0 0 16px; font-size: 1.02rem; }
.abstract-panel p:last-child { margin-bottom: 0; }
.demo-panel video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #111;
  border-radius: 4px;
}
figcaption, .table-note {
  color: var(--muted);
  font-size: .91rem;
}

.paper-figure, .rollout-figure { margin: 0; }
.figure-button {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  cursor: zoom-in;
}
.figure-button img {
  display: block;
  width: 100%;
  height: auto;
}
.zoom-hint {
  position: absolute;
  right: 11px;
  bottom: 11px;
  padding: 4px 9px;
  border-radius: 6px;
  background: #ffffffeb;
  box-shadow: 0 1px 5px #0000001e;
  color: var(--body);
  font-size: .78rem;
  pointer-events: none;
}
figcaption { margin: 9px 2px 0; }
.stages {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 13px;
  margin-top: 24px;
}
.stages article {
  padding: 17px 18px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}
.stage-number { color: var(--blue); font-size: .92rem; font-weight: 700; }
.stages h3 {
  margin: 8px 0 8px;
  color: var(--ink);
  font-size: 1.03rem;
  line-height: 1.3;
}
.stages p { margin: 0; font-size: .91rem; }

.result-block + .result-block {
  margin-top: 34px;
  padding-top: 29px;
  border-top: 1px solid var(--line);
}
.result-block h3 {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 16px;
  color: var(--ink);
  font-size: 1.24rem;
  font-weight: 500;
}
.table-note { margin: 0 0 12px; }
.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fff;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  color: var(--body);
  font-size: .88rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.motion-table { min-width: 860px; }
.data-table th, .data-table td { padding: 8px 10px; text-align: center; }
.data-table thead th {
  border-bottom: 1px solid var(--line);
  background: #f0f4fa;
  color: var(--ink);
  font-weight: 700;
}
.data-table thead tr + tr th { font-size: .79rem; }
.data-table th:first-child { text-align: left; }
.data-table tbody tr:not(.group-row) + tr:not(.group-row) { border-top: 1px solid #f0f1f2; }
.data-table tbody th { font-weight: 500; }
.data-table tbody .group-row th {
  padding: 6px 10px 4px;
  background: #f8fafc;
  color: var(--muted);
  font-size: .76rem;
  font-weight: 500;
  letter-spacing: .02em;
}
.data-table .ours-row { background: #eaf2ff; color: #124a9e; font-weight: 700; }
.data-table .ours-row th { font-weight: 700; }
.quality-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 13px;
  margin-bottom: 10px;
}
.quality-grid .data-table { min-width: 350px; }
.quality-grid .data-table caption {
  padding: 9px 10px 6px;
  color: var(--ink);
  font-size: .96rem;
  font-weight: 500;
  text-align: left;
}
.quality-grid + .table-note { margin: 12px 2px 0; }
.rollout-figure { display: grid; gap: 16px; }
.rollout-sequence {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}
.rollout-sequence h4 {
  margin: 0 0 10px 3px;
  color: var(--ink);
  font-size: .98rem;
  font-weight: 500;
}
.rollout-sequence .figure-button { border-radius: 8px; }

footer {
  padding: 1px 0 18px;
  color: var(--muted);
  font-size: .86rem;
  text-align: center;
}
footer a { text-decoration: none; }
footer a:hover { text-decoration: underline; }

#figure-dialog {
  width: min(95vw, 1600px);
  max-width: 95vw;
  max-height: 94vh;
  padding: 46px 15px 15px;
  overflow: auto;
  border: 0;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 18px 60px #00000036;
}
#figure-dialog::backdrop { background: #111827b8; }
#figure-dialog img { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.dialog-close {
  position: absolute;
  top: 7px;
  right: 12px;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 50%;
  background: #edf1f6;
  color: var(--ink);
  font-size: 1.55rem;
  line-height: 1;
  cursor: pointer;
}

@media (max-width: 800px) {
  body { padding: 0 15px; margin: 25px auto; }
  .panel { padding: 21px; border-radius: 23px; }
  .stages { grid-template-columns: 1fr; }
  .quality-grid { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .hero { padding: 0; }
  .hero h1 { margin-bottom: 20px; font-size: 2rem; }
  .authors { font-size: .92rem; column-gap: 8px; }
  .affiliations { font-size: .84rem; }
  .affiliations span { white-space: normal; }
  .panel { padding: 17px; border-radius: 19px; }
  .panel h2 { font-size: 1.55rem; }
  .result-block h3 { align-items: flex-start; font-size: 1.12rem; }
  .zoom-hint { font-size: .7rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}