/* OmniIMU-Bench project site
   Layout: one centred column (max 1120px); alternating plain / tinted bands;
   hero = headline on the left, benchmark sunburst on the right, six-channel IMU trace drawn behind. */
:root {
  --bg: #f7f8fb;
  --bg-alt: #eef1f6;
  --surface: #ffffff;
  --surface-2: #f1f4f8;
  --line: #dde3ec;
  --line-soft: #e9edf3;
  --ink: #16202e;
  --ink-soft: #3d4a5c;
  --muted: #6b7788;
  --accent: #1d6f8f;      /* deep teal-blue: primary */
  --accent-d: #155369;
  --accent-l: #5aa3bf;
  --accent-bg: rgba(29,111,143,.09);
  --kin: #2f7d6b;         /* kinematic family */
  --sem: #c2662a;         /* semantic family */
  --cli: #7c5fa8;         /* clinical family */
  --kin-bg: rgba(47,125,107,.10);
  --sem-bg: rgba(194,102,42,.10);
  --cli-bg: rgba(124,95,168,.10);
  --grad: linear-gradient(100deg, #1d6f8f, #3a9fbd);
  --shadow-sm: 0 1px 2px rgba(22,32,46,.05), 0 2px 10px rgba(22,32,46,.05);
  --shadow: 0 18px 44px -24px rgba(22,32,46,.35);
  --glow: 0 10px 28px -12px rgba(29,111,143,.55);
  --display: "Bricolage Grotesque", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --maxw: 1120px;
  --r: 12px;
  --r-sm: 8px;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0; font-family: var(--body); font-size: 17px; line-height: 1.6;
  background: var(--bg); color: var(--ink);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
p a, li a, td a, figcaption a { color: var(--accent); }
p a:hover, li a:hover { text-decoration: underline; }
img, svg, canvas { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-family: var(--display); line-height: 1.12; margin: 0; letter-spacing: -.015em; text-wrap: balance; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 650; }
p { margin: 0; }
.wrap { width: min(var(--maxw), 100% - 2rem); margin-inline: auto; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }
.mono { font-family: var(--mono); }
.num { font-variant-numeric: tabular-nums; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.ic { width: 1em; height: 1em; display: inline-block; vertical-align: -.14em; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- nav ---------- */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding-top: env(safe-area-inset-top, 0px);
  border-bottom: 1px solid transparent; transition: background .3s, border-color .3s, box-shadow .3s; }
.nav.scrolled { background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: blur(14px) saturate(140%); -webkit-backdrop-filter: blur(14px) saturate(140%); border-bottom-color: var(--line); box-shadow: 0 6px 20px -18px rgba(0,0,0,.4); }
.nav-inner { width: min(var(--maxw), 100% - 2rem); margin-inline: auto; height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .6rem; font-family: var(--display); font-weight: 700; font-size: 1.12rem; letter-spacing: -.01em; }
.brand .mark { width: 24px; height: 24px; border-radius: 7px; background: var(--grad); box-shadow: 0 4px 12px rgba(29,111,143,.35); position: relative; flex: none; }
.brand .mark::after { content: ""; position: absolute; inset: 7px 5px; border-radius: 2px; background: repeating-linear-gradient(90deg, rgba(255,255,255,.9) 0 2px, transparent 2px 5px); opacity: .9; }
.brand .v { font-family: var(--mono); font-weight: 500; font-size: .72rem; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 1px 8px; }
.nav-links { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: .2rem; }
.nav-links a { display: inline-flex; align-items: center; gap: .35rem; color: var(--ink-soft); font-weight: 500; font-size: .93rem; padding: .45rem .75rem; border-radius: 9px; transition: color .18s, background .18s; }
.nav-links a:hover { color: var(--ink); background: var(--surface-2); }
.nav-links .btn-mini { margin-left: .4rem; border: 1px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 999px; padding: .45rem 1rem; }
.nav-links .btn-mini:hover { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 0 3px var(--accent-bg); }
.nav-toggle { display: none; background: none; border: 0; color: var(--ink); cursor: pointer; padding: .4rem; font-size: 1.4rem; }
@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav nav { position: absolute; left: 0; right: 0; top: calc(64px + env(safe-area-inset-top, 0px)); background: var(--surface); border-bottom: 1px solid var(--line); display: none; padding: .6rem 1rem 1rem; }
  .nav.open nav { display: block; }
  .nav-links { flex-direction: column; align-items: stretch; }
  .nav-links .btn-mini { margin: .4rem 0 0; justify-content: center; }
}

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--display); font-weight: 600; font-size: .98rem; padding: .74rem 1.3rem; border-radius: 9px; border: 1px solid transparent; cursor: pointer; transition: transform .18s, box-shadow .18s, border-color .18s, background .18s, color .18s; white-space: nowrap; }
.btn.primary { background: var(--grad); color: #fff; box-shadow: var(--glow); }
.btn.primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -14px rgba(29,111,143,.65); }
.btn.ghost { background: var(--surface); border-color: var(--line); color: var(--ink); }
.btn.ghost:hover { transform: translateY(-2px); border-color: var(--accent); color: var(--accent); }
.btn .soon { font-family: var(--mono); font-size: .66rem; font-weight: 500; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--line); border-radius: 5px; padding: .05rem .35rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: .8rem; }
.cta-row.center { justify-content: center; }

/* ---------- hero ---------- */
.hero { position: relative; padding: calc(96px + env(safe-area-inset-top, 0px)) 0 56px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-bg canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .55; }
.hero-bg .fade { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 0%, var(--bg) 92%); }
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 3rem; align-items: center; }
.kicker { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--mono); font-size: .76rem; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.kicker .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1 } 50% { opacity: .35 } }
.hero h1 { font-size: clamp(2.8rem, 6.4vw, 4.6rem); font-weight: 800; letter-spacing: -.035em; line-height: .98; margin: .9rem 0 1rem; }
.hero .tagline { font-family: var(--display); font-size: clamp(1.15rem, 2vw, 1.45rem); font-weight: 500; color: var(--ink-soft); max-width: 36ch; line-height: 1.35; }
.lead-list { margin: 1.6rem 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.lead-list li { display: grid; grid-template-columns: 7.2rem 1fr; gap: 1rem; padding: .7rem 0; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: 1rem; line-height: 1.45; }
.lead-list .ln { font-family: var(--mono); font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); padding-top: .2rem; }
.lead-list strong { color: var(--ink); font-weight: 600; }
.hero-cta { margin-top: 1.6rem; }
.hero-fig { position: relative; }
.hero-fig img { width: 100%; max-width: 520px; margin-inline: auto; filter: drop-shadow(0 24px 40px rgba(22,32,46,.18)); }
.hero-fig .fig-note { margin-top: .6rem; text-align: center; font-size: .82rem; color: var(--muted); }
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero-fig img { max-width: 420px; }
}

/* ---------- task families (hero strip) ---------- */
.families { position: relative; z-index: 1; margin-top: 2.6rem; display: grid; grid-template-columns: repeat(6, 1fr); gap: .7rem; }
.fam { position: relative; display: block; text-align: left; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: .9rem .95rem; cursor: default; transition: transform .18s, box-shadow .18s, border-color .18s; font: inherit; color: inherit; }
.fam:hover, .fam:focus-within { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--f); }
.fam .fam-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--f); display: inline-block; margin-bottom: .55rem; box-shadow: 0 0 0 4px color-mix(in srgb, var(--f) 18%, transparent); }
.fam .fam-name { display: block; font-family: var(--display); font-weight: 650; font-size: 1rem; line-height: 1.2; }
.fam .fam-sub { display: block; font-family: var(--mono); font-size: .72rem; color: var(--muted); margin-top: .3rem; }
.fam .fam-card { display: block; font-size: .86rem; color: var(--ink-soft); margin-top: .55rem; line-height: 1.45; }
.fam.f-kin { --f: var(--kin); } .fam.f-sem { --f: var(--sem); } .fam.f-cli { --f: var(--cli); }
@media (max-width: 1000px) { .families { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .families { grid-template-columns: repeat(2, 1fr); } }

/* ---------- marquee ---------- */
.logos { padding: .4rem 0 .8rem; }
.marquee { overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee-track { display: flex; gap: .6rem; width: max-content; animation: scroll 70s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes scroll { to { transform: translateX(-50%); } }
.chip { font-family: var(--mono); font-size: .78rem; color: var(--ink-soft); background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: .38rem .8rem; white-space: nowrap; }
.chip.k { border-color: color-mix(in srgb, var(--kin) 40%, var(--line)); } .chip.s { border-color: color-mix(in srgb, var(--sem) 40%, var(--line)); } .chip.c { border-color: color-mix(in srgb, var(--cli) 40%, var(--line)); }
@media (prefers-reduced-motion: reduce) { .marquee-track { animation: none; flex-wrap: wrap; width: auto; } .marquee { mask-image: none; -webkit-mask-image: none; } .kicker .dot { animation: none; } }

/* ---------- sections ---------- */
.section { padding: 5rem 0; }
.section.alt { background: var(--bg-alt); }
.section-head { max-width: 62ch; margin-bottom: 2.4rem; }
.section-head .kicker { margin-bottom: .7rem; }
.section-head p { margin-top: .8rem; color: var(--ink-soft); font-size: 1.08rem; }
.section-head.center { margin-inline: auto; text-align: center; }
.reveal { animation: none; }
.reveal.in { animation: rise .7s cubic-bezier(.2,.7,.2,1) both; }
@keyframes rise { from { opacity: .001; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .reveal.in { animation: none; } }

/* accordion */
.accordion { display: grid; gap: .7rem; }
.acc-item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.acc-item summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: 3rem 1fr auto; align-items: center; gap: 1rem; padding: 1.05rem 1.2rem; }
.acc-item summary::-webkit-details-marker { display: none; }
.acc-num { font-family: var(--mono); font-size: .8rem; color: var(--accent); letter-spacing: .08em; }
.acc-title { font-family: var(--display); font-weight: 650; font-size: 1.12rem; }
.acc-ico { transition: transform .25s; color: var(--muted); }
.acc-item[open] .acc-ico { transform: rotate(45deg); color: var(--accent); }
.acc-body { padding: 0 1.2rem 1.2rem 5.2rem; color: var(--ink-soft); max-width: 70ch; }
@media (max-width: 600px) { .acc-item summary { grid-template-columns: 2.4rem 1fr auto; } .acc-body { padding-left: 1.2rem; } }

/* findings: split with discover / go back */
.wrap-wide { width: min(1360px, 100% - 2rem); }
.finding { display: grid; grid-template-columns: 2fr 3fr; gap: 2.5rem; align-items: center; }
.finding.flip .f-text { order: 2; }
.finding .f-text h2 { margin-bottom: 1rem; }
.finding .f-text .lede { color: var(--ink-soft); font-size: 1.06rem; max-width: 52ch; }
.finding .f-fig { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: .75rem; box-shadow: var(--shadow-sm); min-width: 0; }
.finding .f-fig img, figure.paper-fig img { cursor: zoom-in; }
.finding .f-fig figcaption { margin-top: .6rem; font-size: .82rem; color: var(--muted); line-height: 1.45; }
.finding .f-fig .two { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.discover { display: inline-flex; align-items: center; gap: .5rem; margin-top: 1.3rem; background: none; border: 0; padding: 0; font: inherit; font-family: var(--display); font-weight: 650; font-size: 1rem; color: var(--accent); cursor: pointer; }
.discover .ic { transition: transform .2s; }
.discover:hover .ic { transform: translateX(4px); }
.f-detail { display: none; margin-top: 1.1rem; }
.finding.open .f-detail { display: block; }
.finding.open .lede, .finding.open .discover { display: none; }
.f-detail ul { margin: 0 0 1rem; padding-left: 1.2rem; color: var(--ink-soft); display: grid; gap: .5rem; }
.f-detail strong { color: var(--ink); }
.back { display: inline-flex; align-items: center; gap: .4rem; background: none; border: 0; padding: 0; font: inherit; font-family: var(--display); font-weight: 650; color: var(--accent); cursor: pointer; }
.back:hover .ic { transform: translateX(-4px); }
.back .ic { transition: transform .2s; }
@media (max-width: 1000px) { .finding { grid-template-columns: 1fr; gap: 1.6rem; } .finding.flip .f-text { order: 0; } }

/* bullet list with expanders */
.blist { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; }
.bl-item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); }
.bl-item summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: .9rem; padding: .95rem 1.2rem; font-family: var(--display); font-weight: 650; font-size: 1.05rem; }
.bl-item summary::-webkit-details-marker { display: none; }
.bl-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--f, var(--accent)); flex: none; }
.bl-item .acc-ico { margin-left: auto; }
.bl-item[open] .acc-ico { transform: rotate(45deg); color: var(--accent); }
.bl-body { padding: 0 1.2rem 1.1rem 3.1rem; color: var(--ink-soft); max-width: 72ch; }
.bl-item.a-kin { --f: var(--kin); } .bl-item.a-sem { --f: var(--sem); } .bl-item.a-cli { --f: var(--cli); } .bl-item.a-acc { --f: var(--accent); }

/* timeline / how it works */
.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.tl-step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 1.2rem; display: flex; flex-direction: column; gap: .7rem; }
.tl-step img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: #fff; border-radius: var(--r-sm); border: 1px solid var(--line-soft); padding: .5rem; }
.tl-node { font-family: var(--mono); font-size: .78rem; letter-spacing: .1em; color: var(--f, var(--accent)); }
.tl-title { font-family: var(--display); font-weight: 700; font-size: 1.2rem; }
.tl-desc { color: var(--ink-soft); font-size: .96rem; }
.tl-step.a-kin { --f: var(--kin); } .tl-step.a-sem { --f: var(--sem); } .tl-step.a-cli { --f: var(--cli); }
@media (max-width: 860px) { .timeline { grid-template-columns: 1fr; } }

/* task cards */
.mgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.mcard { text-align: left; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 1.2rem; font: inherit; color: inherit; cursor: pointer; display: grid; grid-template-columns: 1fr auto; gap: .2rem .8rem; transition: transform .18s, box-shadow .18s, border-color .18s; }
.mcard:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--f); }
.mcard .mc-icon { grid-column: 1 / -1; width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: color-mix(in srgb, var(--f) 14%, transparent); color: var(--f); margin-bottom: .5rem; }
.mcard .mc-icon .ic { width: 22px; height: 22px; }
.mcard .mc-title { font-family: var(--display); font-weight: 700; font-size: 1.12rem; }
.mcard .mc-plus { color: var(--muted); transition: transform .25s; align-self: start; margin-top: .25rem; }
.mcard.open .mc-plus { transform: rotate(45deg); color: var(--f); }
.mcard .mc-meta { grid-column: 1 / -1; font-family: var(--mono); font-size: .76rem; color: var(--muted); }
.mcard .mc-desc { grid-column: 1 / -1; display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s; }
.mcard .mc-desc > span { overflow: hidden; color: var(--ink-soft); font-size: .93rem; }
.mcard.open .mc-desc { grid-template-rows: 1fr; }
.mcard.open .mc-desc > span { padding-top: .6rem; }
.mcard.a-kin { --f: var(--kin); } .mcard.a-sem { --f: var(--sem); } .mcard.a-cli { --f: var(--cli); }
@media (max-width: 860px) { .mgrid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .mgrid { grid-template-columns: 1fr; } }

/* leaderboard */
.tabs { display: inline-flex; background: var(--surface-2); border: 1px solid var(--line); border-radius: 999px; padding: .25rem; gap: .25rem; margin-bottom: 1.2rem; }
.tab { border: 0; background: none; font: inherit; font-family: var(--display); font-weight: 600; font-size: .92rem; color: var(--ink-soft); padding: .45rem 1rem; border-radius: 999px; cursor: pointer; }
.tab[aria-selected="true"] { background: var(--surface); color: var(--accent); box-shadow: var(--shadow-sm); }
.lb-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow-sm); }
table.lb { border-collapse: collapse; width: 100%; min-width: 760px; font-size: .9rem; font-variant-numeric: tabular-nums; }
table.lb th, table.lb td { padding: .6rem .8rem; text-align: right; border-bottom: 1px solid var(--line-soft); white-space: nowrap; }
table.lb th { font-family: var(--display); font-weight: 650; color: var(--ink-soft); font-size: .84rem; background: var(--surface-2); position: sticky; top: 0; }
table.lb th small, table.lb td small { display: block; font-family: var(--mono); font-weight: 400; font-size: .7rem; color: var(--muted); }
table.lb th:first-child, table.lb td:first-child { text-align: left; }
table.lb td.b { font-weight: 700; color: var(--accent); }
table.lb tr.ours td:first-child { font-weight: 700; }
table.lb tr.ref td { color: var(--muted); }
table.lb tr.ref td:first-child { font-style: italic; }
table.lb tr.sep td { border-top: 2px solid var(--line); }
table.lb tbody tr:hover td { background: var(--accent-bg); }
.lb-note { margin-top: .8rem; font-size: .85rem; color: var(--muted); max-width: 90ch; }
[hidden] { display: none !important; }

/* CTA band */
.cta-band { padding: 5rem 0; background: var(--bg-alt); text-align: center; }
.cta-band h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); margin: .8rem auto .9rem; max-width: 22ch; }
.cta-band p { color: var(--ink-soft); max-width: 60ch; margin: 0 auto 1.6rem; font-size: 1.06rem; }

/* footer */
.footer { padding: 2.6rem 0 2.2rem; border-top: 1px solid var(--line); }
.foot-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; }
.foot-links { display: flex; flex-wrap: wrap; gap: 1rem; font-size: .9rem; color: var(--ink-soft); }
.foot-links a:hover { color: var(--accent); }
.foot-copy { width: 100%; font-size: .84rem; color: var(--muted); }

/* ================= paper page ================= */
.paper-hero { padding: calc(100px + env(safe-area-inset-top, 0px)) 0 2.6rem; text-align: center; }
.paper-hero .kicker { justify-content: center; }
.paper-hero h1 { font-size: clamp(1.75rem, 3.6vw, 2.7rem); font-weight: 750; margin: 1rem auto .9rem; max-width: 28ch; letter-spacing: -.02em; }
.paper-hero .sub { color: var(--ink-soft); font-size: 1.08rem; max-width: 66ch; margin: 0 auto 1.4rem; }
.authors { font-size: 1.04rem; line-height: 1.7; max-width: 70ch; margin-inline: auto; }
.authors sup { font-size: .7em; color: var(--accent); }
.affils { color: var(--muted); font-size: .9rem; margin-top: .4rem; }
.paper-hero .cta-row { margin-top: 1.5rem; }
.stats { display: grid; grid-template-columns: repeat(6, 1fr); gap: .8rem; margin-top: 2.6rem; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: .95rem .6rem; }
.stat b { display: block; font-family: var(--display); font-size: 1.7rem; font-weight: 800; letter-spacing: -.03em; color: var(--accent); line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat span { font-size: .8rem; color: var(--muted); }
@media (max-width: 860px) { .stats { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); } }
@media (max-width: 480px) { .stats { grid-template-columns: repeat(2, 1fr); } }

.prose { max-width: 72ch; color: var(--ink-soft); display: grid; gap: 1rem; font-size: 1.02rem; }
.prose strong { color: var(--ink); }
.abstract { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--r); padding: 1.4rem 1.6rem; }
.two-col { display: grid; grid-template-columns: 1.1fr .9fr; gap: 2.4rem; align-items: start; }
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; } }
figure.paper-fig { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 1rem; box-shadow: var(--shadow-sm); }
figure.paper-fig img { width: 100%; background: #fff; border-radius: var(--r-sm); }
figure.paper-fig figcaption { margin-top: .7rem; font-size: .86rem; color: var(--muted); line-height: 1.5; }
figure.paper-fig figcaption b { color: var(--ink-soft); }
.news { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; }
.news li { display: grid; grid-template-columns: 6rem 1fr; gap: 1rem; padding: .6rem 0; border-bottom: 1px solid var(--line-soft); font-size: .96rem; color: var(--ink-soft); }
.news .d { font-family: var(--mono); font-size: .78rem; color: var(--accent); padding-top: .25rem; }

.pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 2.4rem; }
.pillar { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 1.2rem; }
.pillar .n { font-family: var(--mono); color: var(--accent); font-size: .78rem; letter-spacing: .1em; }
.pillar h3 { margin: .4rem 0 .5rem; }
.pillar p { color: var(--ink-soft); font-size: .93rem; }
@media (max-width: 860px) { .pillars { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .pillars { grid-template-columns: 1fr; } }

.subhead { font-family: var(--display); font-weight: 700; font-size: 1.3rem; margin: 2.2rem 0 1rem; }
.methods { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.method { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 1.1rem 1.2rem; display: grid; gap: .35rem; }
.method .t { font-family: var(--display); font-weight: 700; font-size: 1.05rem; }
.method .s { font-size: .9rem; color: var(--ink-soft); }
.method .tags { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .4rem; }
.method .tags span { font-family: var(--mono); font-size: .72rem; border: 1px solid var(--line); border-radius: 6px; padding: .1rem .45rem; color: var(--ink-soft); }
.method .tags span.ours { border-color: var(--accent); color: var(--accent); }
@media (max-width: 860px) { .methods { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .methods { grid-template-columns: 1fr; } }

.task-table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); }
table.tt { border-collapse: collapse; width: 100%; min-width: 640px; font-size: .9rem; }
table.tt th, table.tt td { padding: .55rem .8rem; text-align: left; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
table.tt th { background: var(--surface-2); font-family: var(--display); font-weight: 650; font-size: .84rem; color: var(--ink-soft); }
table.tt td.r, table.tt th.r { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.tt .fam-tag { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--f); margin-right: .5rem; vertical-align: middle; }
table.tt tr.k { --f: var(--kin); } table.tt tr.s { --f: var(--sem); } table.tt tr.c { --f: var(--cli); }
table.tt td.mono { font-family: var(--mono); font-size: .8rem; color: var(--ink-soft); }
.setup { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }

.findlist { list-style: none; margin: 0 0 2.6rem; padding: 0; display: grid; gap: .6rem; }
.findlist li { display: grid; grid-template-columns: 2.6rem 1fr; gap: .8rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 1rem 1.2rem; }
.findlist .n { font-family: var(--mono); color: var(--accent); font-size: .8rem; letter-spacing: .08em; padding-top: .25rem; }
.findlist b { font-family: var(--display); font-weight: 700; font-size: 1.05rem; display: block; margin-bottom: .2rem; }
.findlist p { color: var(--ink-soft); font-size: .95rem; }
.sub-finding { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: start; padding: 2rem 0; border-top: 1px solid var(--line); }
.sub-finding.one { grid-template-columns: 1fr; }
.sub-finding h3 { font-size: 1.35rem; margin-bottom: .8rem; }
.sub-finding h3 .n { font-family: var(--mono); color: var(--accent); font-size: .8rem; margin-right: .6rem; letter-spacing: .08em; }
.sub-finding .prose { font-size: .98rem; }
.kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: .7rem; margin-top: 1.2rem; }
.kpi { background: var(--surface-2); border-radius: var(--r-sm); padding: .8rem .9rem; }
.kpi b { display: block; font-family: var(--display); font-size: 1.45rem; font-weight: 800; letter-spacing: -.02em; color: var(--f, var(--accent)); font-variant-numeric: tabular-nums; line-height: 1.1; }
.kpi span { font-size: .78rem; color: var(--muted); }
.kpi.k { --f: var(--kin); } .kpi.s { --f: var(--sem); } .kpi.c { --f: var(--cli); }
.figpair { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 860px) { .sub-finding { grid-template-columns: 1fr; } .figpair { grid-template-columns: 1fr; } .kpis { grid-template-columns: 1fr 1fr; } }

.cite { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: start; }
.bibtex { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 1.1rem 1.2rem; overflow-x: auto; }
.bibtex pre { margin: 0; font-family: var(--mono); font-size: .82rem; line-height: 1.55; color: var(--ink-soft); white-space: pre; }
.copy-btn { position: absolute; top: .7rem; right: .7rem; font-family: var(--mono); font-size: .74rem; border: 1px solid var(--line); background: var(--surface-2); color: var(--ink-soft); border-radius: 6px; padding: .3rem .6rem; cursor: pointer; }
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
@media (max-width: 860px) { .cite { grid-template-columns: 1fr; } }
.ack { margin-top: 1.4rem; font-size: .9rem; color: var(--muted); max-width: 70ch; }

/* lightbox: click a figure to see it at full size */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(8,12,18,.88); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .9rem; padding: 2vh 2vw; cursor: zoom-out; }
.lightbox img { max-width: 96vw; max-height: 86vh; width: auto; height: auto; background: #fff; border-radius: 8px; box-shadow: 0 30px 80px rgba(0,0,0,.6); }
.lightbox .lb-cap { margin: 0; max-width: 90ch; text-align: center; color: #dfe6ee; font-size: .9rem; line-height: 1.45; }

/* per-task tables (paper appendix) */
.lb-sub { margin-top: 2.6rem; }
.lb-sub h3 { font-size: 1.3rem; margin-bottom: .4rem; }
.lb-intro { color: var(--ink-soft); font-size: .95rem; max-width: 80ch; margin-bottom: 1rem; }
.tabs.tabs-wrap { display: flex; flex-wrap: wrap; border-radius: 14px; }
table.lb th.grp { text-align: center; border-bottom: 1px solid var(--line); }
table.lb tr.section td { font-size: .82rem; color: var(--muted); background: var(--surface-2); padding-top: .4rem; padding-bottom: .4rem; }
table.lb td:first-child { white-space: normal; min-width: 14rem; }
.lb-note.tt-cap { margin-top: .6rem; }

/* ablation rows: h3 headings in the finding layout */
.finding .f-text h3 { font-size: clamp(1.35rem, 2.4vw, 1.8rem); font-weight: 700; margin-bottom: .9rem; }
.finding .f-fig .lb-wrap { box-shadow: none; }
.finding .f-fig .lb-note { margin-top: .6rem; font-size: .82rem; }
.finding .f-fig table.lb { min-width: 0; }
.finding .f-fig table.lb td:first-child { min-width: 0; }
.finding .f-fig.fig-sm img { max-width: 560px; margin-inline: auto; }
.finding .f-fig.fig-sm figcaption { max-width: 560px; margin-inline: auto; }
.finding .f-fig.fig-sm .lb-wrap, .finding .f-fig.fig-sm .lb-note { max-width: 560px; margin-inline: auto; }
/* small panels: the card itself shrinks around its content and sits centred in the figure column */
.finding .f-fig.fig-sm { max-width: 500px; width: 100%; justify-self: center; }
.finding .f-fig.fig-sm img, .finding .f-fig.fig-sm figcaption, .finding .f-fig.fig-sm .lb-wrap, .finding .f-fig.fig-sm .lb-note { max-width: none; }
/* leaderboard header: brighter accent tint instead of grey */
table.lb th { background: var(--accent-bg); color: var(--accent-d); }
table.lb th small { color: var(--accent); }
table.lb th.grp { background: color-mix(in srgb, var(--accent-bg) 55%, var(--surface)); }
/* leaderboard header: solid accent band, white text */
table.lb th { background: var(--accent); color: #fff; border-bottom: 1px solid var(--accent-d); }
table.lb th small { color: rgba(255,255,255,.82); }
table.lb th.grp { background: var(--accent-d); color: #fff; border-bottom: 1px solid rgba(255,255,255,.25); }
/* transfer finding: wider figure, smaller text */
.finding.fig-wide { grid-template-columns: 1fr 2.3fr; gap: 2rem; }
.finding.fig-wide .f-text h2 { font-size: clamp(1.25rem, 2.1vw, 1.6rem); margin-bottom: .7rem; }
.finding.fig-wide .f-text .lede, .finding.fig-wide .f-detail ul { font-size: .93rem; }
.finding.fig-wide .f-fig { padding: .5rem; }
.finding.fig-wide .f-fig .two { gap: .5rem; }
.finding .f-fig.fig-xs { max-width: 400px; }
/* joint-training table: no horizontal scrolling, cells wrap, card a little wider */
.finding .f-fig.fig-table { max-width: 640px; }
.finding .f-fig.fig-table .lb-wrap { overflow-x: visible; }
.finding .f-fig.fig-table table.lb { width: 100%; min-width: 0; font-size: .88rem; }
.finding .f-fig.fig-table table.lb th, .finding .f-fig.fig-table table.lb td { white-space: normal; padding: .55rem .6rem; }
.finding .f-fig.fig-table table.lb td:first-child { min-width: 0; }
/* paper page: tables that fit their column instead of scrolling */
.lb-wrap.lb-fit { overflow-x: visible; margin-top: 1.2rem; }
.lb-wrap.lb-fit table.lb { min-width: 0; width: 100%; }
.lb-wrap.lb-fit table.lb th, .lb-wrap.lb-fit table.lb td { white-space: normal; }
/* transfer finding, stronger: figure takes ~72% of the row, text one step smaller again */
.finding.fig-wide { grid-template-columns: 1fr 2.6fr; }
.finding.fig-wide .f-text h2 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); line-height: 1.2; }
.finding.fig-wide .f-text .lede, .finding.fig-wide .f-detail ul { font-size: .88rem; line-height: 1.5; }
.finding.fig-wide .discover, .finding.fig-wide .back { font-size: .9rem; }
.finding.fig-wide .f-fig figcaption { font-size: .78rem; }
/* fix: images inside small panels must fill the card, never their natural width */
.finding .f-fig.fig-sm img { max-width: 100%; width: 100%; height: auto; }
.finding .f-fig.fig-sm { overflow: hidden; }
/* flipped rows: the figure occupies the first column, so the wide track must come first */
.finding.flip { grid-template-columns: 3fr 2fr; }
.finding.flip.fig-wide { grid-template-columns: 2.6fr 1fr; }
@media (max-width: 1000px) { .finding.flip, .finding.flip.fig-wide { grid-template-columns: 1fr; } }
/* qualitative figures: full-width stacked cards */
.qual-grid { display: grid; gap: 1.4rem; }
.qual-grid figure.paper-fig img { cursor: zoom-in; }
table.lb td.contam { color: var(--muted); text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--muted) 60%, transparent); }