:root {
  --purple: #7358c8;
  --purple-dark: #4d3a91;
  --purple-soft: #f0ecfb;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --line: rgba(29, 29, 31, .09);
  --panel: #fff;
  --page: #f5f5f7;
  --shadow: 0 18px 50px rgba(29, 29, 31, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--page); font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif; line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; }
.container { width: min(960px, calc(100% - 42px)); margin-inline: auto; }

.toc { position: fixed; z-index: 5; left: 30px; top: 50%; width: 170px; padding: 18px 16px; border: 1px solid rgba(255,255,255,.7); border-radius: 18px; background: rgba(255,255,255,.72); box-shadow: 0 10px 30px rgba(29,29,31,.06); transform: translateY(-50%); color: var(--muted); font-size: .84rem; backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
.toc strong { display: block; margin-bottom: 15px; color: #4c4b51; font-size: .72rem; letter-spacing: .14em; }
.toc nav { display: grid; border-left: 1px solid #dedde3; }
.toc a { padding: 7px 0 7px 14px; text-decoration: none; }
.toc a:hover { color: var(--purple); border-left: 2px solid var(--purple); margin-left: -2px; }

.hero { position: relative; overflow: hidden; padding: 112px 0 96px; text-align: center; border-bottom: 1px solid var(--line); background: radial-gradient(circle at 50% 0%, rgba(115,88,200,.16), transparent 43%), #fbfbfd; }
.venue { margin: 0 0 18px; color: var(--purple); font-size: .76rem; font-weight: 800; letter-spacing: .14em; }
h1 { max-width: 970px; margin: 0 auto 28px; font-size: clamp(2.7rem, 5.4vw, 5rem); font-weight: 730; line-height: 1.03; letter-spacing: -.055em; }
.brand-title { display: flex; align-items: center; justify-content: center; gap: clamp(16px, 2.4vw, 28px); max-width: 1060px; font-size: clamp(2.2rem, 4.35vw, 4rem); text-align: left; }
.title-logo { flex: 0 0 auto; width: clamp(118px, 13vw, 150px); border-radius: 50%; }
.title-copy { color: var(--ink); }
.title-brand { color: var(--purple); }
.authors { margin: 0; font-size: 1.02rem; font-weight: 620; }
.authors a { text-decoration: none; text-underline-offset: 3px; }
.authors a:hover { color: var(--purple); text-decoration: underline; }
.affiliation { margin: 5px 0 0; color: var(--muted); }
.project-links { display: flex; justify-content: center; flex-wrap: nowrap; gap: 10px; margin-top: 28px; }
.pill { display: inline-flex; align-items: center; gap: 7px; padding: 9px 18px; border: 1px solid rgba(29,29,31,.1); border-radius: 999px; background: rgba(255,255,255,.82); box-shadow: 0 3px 12px rgba(29,29,31,.05); font-size: .88rem; font-weight: 650; text-decoration: none; white-space: nowrap; transition: transform .2s ease, color .2s ease, background .2s ease; backdrop-filter: blur(12px); }
.pill svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.pill:hover { color: #fff; border-color: var(--purple); background: var(--purple); transform: translateY(-1px); }
.pill.disabled { color: #8e8e93; background: rgba(245,245,247,.85); box-shadow: none; cursor: not-allowed; }

.paper-page { background: #f5f5f7; }
.paper-hero { position: relative; padding: 68px 0 54px; text-align: center; border-bottom: 1px solid var(--line); background: radial-gradient(circle at 50% 0%, rgba(115,88,200,.16), transparent 48%), #fbfbfd; }
.paper-hero h1 { max-width: 980px; margin-bottom: 24px; font-size: clamp(2rem, 3.8vw, 3.55rem); }
.paper-back { position: absolute; top: 24px; color: var(--purple); font-size: .86rem; font-weight: 700; text-decoration: none; }
.paper-back:hover { text-decoration: underline; text-underline-offset: 3px; }
.paper-shell { width: min(1180px, calc(100% - 42px)); height: min(82vh, 1040px); margin: 36px auto 0; overflow: hidden; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: var(--shadow); }
.paper-viewer { display: block; width: 100%; height: 100%; border: 0; }
.paper-viewer p { padding: 32px; }

section { padding: 100px 0 6px; scroll-margin-top: 30px; }
h2 { display: inline-block; margin: 0 0 32px; font-size: clamp(2rem, 4vw, 2.7rem); line-height: 1.1; letter-spacing: -.04em; }
h2::after { content: ""; display: block; width: 44px; height: 4px; margin-top: 10px; border-radius: 3px; background: var(--purple); }
.lead { margin-top: 32px; color: #36353d; font-size: 1.08rem; }
.overview-lead { margin-top: 0; }
.overview-video { margin: 0 0 30px; padding: 12px; overflow: hidden; border: 1px solid rgba(255,255,255,.82); border-radius: 26px; background: linear-gradient(135deg, rgba(255,255,255,.76), rgba(244,240,255,.46)); box-shadow: 0 24px 60px rgba(77,58,145,.13), inset 0 1px 0 rgba(255,255,255,.9); backdrop-filter: blur(22px) saturate(135%); -webkit-backdrop-filter: blur(22px) saturate(135%); }
.overview-video video { display: block; width: 100%; aspect-ratio: 16 / 9; border-radius: 17px; background: transparent; box-shadow: 0 10px 28px rgba(29,29,31,.09); }
.section-intro { max-width: 720px; margin: -12px 0 30px; color: var(--muted); font-size: 1.02rem; }
.figure-card { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: var(--shadow); }
.figure-card img { width: 100%; }
#method .figure-card img { padding: 24px 24px 0; }
figcaption { padding: 17px 20px 18px; color: var(--muted); border-top: 1px solid var(--line); font-size: .93rem; }
figcaption strong { color: var(--ink); }
.method-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 20px; }
.method-notes article { padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: var(--panel); box-shadow: 0 8px 28px rgba(29,29,31,.05); }
.method-notes h3 { margin: 0 0 7px; font-size: 1rem; }
.method-notes p { margin: 0; color: var(--muted); font-size: .92rem; }
.video-card { margin: 0; border: 0; background: transparent; }
.video-card video { display: block; width: 100%; aspect-ratio: 16 / 9; background: #000; }
.video-card video { overflow: hidden; border-radius: 26px; box-shadow: var(--shadow); }
.video-caption { padding: 17px 4px 6px; color: var(--muted); border: 0; background: transparent; }
.video-caption strong { color: var(--ink); }
.video-card[hidden] { display: none; }
.video-carousel { max-width: 840px; margin-inline: auto; }
.carousel-stage { position: relative; }
.carousel-footer { display: flex; align-items: center; justify-content: center; gap: 14px; min-height: 54px; }
.carousel-dots { display: flex; gap: 8px; }
.carousel-dots button { width: 8px; height: 8px; padding: 0; border: 0; border-radius: 50%; background: #c7c7cc; cursor: pointer; transition: background .2s ease, transform .2s ease; }
.carousel-dots button:hover { background: #a7a7ad; }
.carousel-dots button.active { background: var(--purple); transform: scale(1.25); }
.carousel-count { color: var(--muted); font-size: .78rem; font-variant-numeric: tabular-nums; }

.table-card { padding: 20px; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: var(--shadow); }
.table-title { padding: 2px 2px 17px; font-weight: 800; }
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 16px 16px 0 0; background: #fbfbfd; }
table { width: 100%; border-collapse: collapse; font-size: .86rem; font-variant-numeric: tabular-nums; }
th, td { padding: 11px 12px; text-align: center; border-bottom: 1px solid #e7e6ea; white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
thead { background: #faf9fc; }
thead th { color: #555260; font-size: .78rem; }
tbody tr:last-child td { border-bottom: 0; }
.ours { color: var(--purple-dark); background: var(--purple-soft); }
.ours.exp { background: #e8e1fa; }
.table-note { margin: 0; padding: 12px 14px; color: var(--muted); border: 1px solid var(--line); border-top: 0; border-radius: 0 0 16px 16px; background: #fbfbfd; font-size: .78rem; }
.result-block { margin-top: 50px; }
.result-subheading { margin: 0 0 8px; font-size: 1.42rem; letter-spacing: -.025em; }
.result-description { max-width: 760px; margin: 0 0 20px; color: var(--muted); }
.result-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.analysis-card { min-width: 0; padding: 18px; border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: var(--shadow); }
.analysis-card h4 { margin: 0 0 14px; font-size: 1rem; }
.analysis-card .table-scroll { border-radius: 14px; }
.compact-table table { font-size: .76rem; }
.compact-table th, .compact-table td { padding: 9px 8px; }
.compact-table thead th { font-size: .7rem; }
.result-grid .compact-table table { font-size: .71rem; }
.result-grid .compact-table th, .result-grid .compact-table td { padding: 8px 5px; }
.runtime-card { padding: 18px; }
.runtime-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(0, .85fr); gap: 18px; align-items: stretch; }
.runtime-card .compact-table table { font-size: .68rem; }
.runtime-card .compact-table th, .runtime-card .compact-table td { padding: 8px 4px; }
.runtime-figure { margin: 0; }
.runtime-figure img { padding: 18px 18px 0; }
.result-figure { margin-top: 28px; }
#results .result-figure img { padding: 24px 24px 0; }

.bib-card { position: relative; overflow-x: auto; padding: 28px; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: var(--shadow); }
.bib-card button { position: absolute; top: 13px; right: 13px; padding: 6px 13px; border: 1px solid #cfccd5; border-radius: 999px; background: #fff; cursor: pointer; }
pre { margin: 0; white-space: pre-wrap; font-size: .82rem; }
footer { margin-top: 80px; padding: 28px 0; color: var(--muted); border-top: 1px solid var(--line); font-size: .88rem; }

@media (max-width: 1320px) { .toc { display: none; } }
@media (max-width: 680px) {
  .container { width: min(100% - 28px, 960px); }
  .hero { padding: 62px 0 54px; }
  h1 { font-size: 2.45rem; }
  .brand-title { flex-direction: column; gap: 8px; text-align: center; }
  .title-logo { width: 120px; }
  .authors br { display: none; }
  .project-links { flex-wrap: wrap; }
  .paper-hero { padding: 68px 0 44px; }
  .paper-shell { width: calc(100% - 20px); height: 74vh; margin-top: 20px; border-radius: 16px; }
  section { padding-top: 62px; }
  .method-notes { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: 1fr; }
  .runtime-grid { grid-template-columns: 1fr; }
  .result-block { margin-top: 38px; }
  .analysis-card, .runtime-card { padding: 12px; border-radius: 18px; }
  .figure-card, .video-card, .overview-video, .table-card, .bib-card { border-radius: 18px; }
  #method .figure-card img { padding: 12px 12px 0; }
  #results .result-figure img { padding: 12px 12px 0; }
  .runtime-figure img { padding: 12px 12px 0; }
  .table-card { padding: 12px; }
  figcaption { padding: 13px 14px; }
  .bib-card { padding: 22px 15px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }