/* ============================================================
   What to Edit Next
   Project page styles
   ============================================================ */
:root {
  --bg: #ffffff;
  --bg-alt: #f6f7fb;
  --bg-card: #ffffff;
  --ink: #1a1d29;
  --ink-soft: #4a5064;
  --ink-faint: #868ea3;
  --line: #e6e8f0;
  --accent: #3f5efb;
  --accent-dark: #2f47c9;
  --accent-soft: #eef1ff;
  --ours: #14a06e;
  --ours-soft: #e7f7ef;
  --warn: #d1495b;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(20,25,45,.04), 0 8px 30px rgba(20,25,45,.06);
  --maxw: 1080px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
/* wider container for image/result grids so they use big screens */
.wrap-wide { max-width: 1360px; margin: 0 auto; padding: 0 24px; }
.wrap-wide > h2.sec, .wrap-wide > .sec-sub { } /* headings inherit centering */

/* ---------- Hero ---------- */
header.hero {
  background:
    radial-gradient(1200px 400px at 50% -120px, var(--accent-soft), transparent 70%),
    var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 56px 0 40px;
  text-align: center;
}
.venue {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-soft);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}
h1.title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(30px, 4.2vw, 52px);
  line-height: 1.14;
  letter-spacing: -.01em;
  margin: 0 auto 22px;
  max-width: 20ch;
  text-wrap: balance;
  color: var(--ink);
}
@media (min-width: 900px) { h1.title { max-width: 900px; } }
h1.title .hl { color: var(--accent-dark); }
.authors {
  font-size: 18px;
  color: var(--ink);
  margin: 0 auto 6px;
  max-width: 800px;
}
.authors a { color: var(--ink); border-bottom: 1px solid transparent; }
.authors a:hover { color: var(--accent-dark); text-decoration: none; border-color: var(--accent); }
.authors sup { color: var(--accent-dark); font-weight: 600; }
.affil { color: var(--ink-soft); font-size: 16px; margin: 6px 0 4px; }
.contact { color: var(--ink-faint); font-size: 14.5px; margin-bottom: 26px; }

/* ---------- Buttons ---------- */
.links { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-size: 15px; font-weight: 550;
  border: 1px solid var(--ink);
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow); }
.btn svg { width: 17px; height: 17px; fill: currentColor; }
.btn.ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent-dark); }
.btn.disabled { opacity: .5; pointer-events: none; }
.btn .hf { font-size: 17px; line-height: 1; }
/* ---------- Sections ---------- */
section { padding: 52px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: none; }
.section-alt { background: var(--bg-alt); }
h2.sec {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(23px, 3vw, 31px);
  text-align: center;
  margin: 0 0 8px;
  letter-spacing: -.01em;
}
.sec-sub { text-align: center; color: var(--ink-soft); max-width: 660px; margin: 0 auto 34px; font-size: 16px; }
h3.subsec {
  font-size: 20px; font-weight: 650; margin: 38px 0 6px;
  display: flex; align-items: center; gap: 10px;
}
h3.subsec .idx {
  font-size: 13px; font-weight: 700; color: var(--accent-dark);
  background: var(--accent-soft); border-radius: 7px; padding: 2px 8px;
}
.subsec-note { color: var(--ink-soft); font-size: 15.5px; margin: 0 0 18px; }

/* ---------- Abstract ---------- */
.abstract { max-width: 800px; margin: 0 auto; }
.abstract p { color: var(--ink-soft); font-size: 17.5px; }
.abstract .lead { color: var(--ink); }

/* ---------- Key idea cards ---------- */
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 10px; }
.card {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px 24px; box-shadow: var(--shadow);
}
.card.bad { border-top: 3px solid var(--warn); }
.card.good { border-top: 3px solid var(--ours); }
.card h4 { margin: 0 0 8px; font-size: 17px; }
.card.bad h4 { color: var(--warn); }
.card.good h4 { color: var(--ours); }
.card p { margin: 0; color: var(--ink-soft); font-size: 15.5px; }
.card .tag { font-weight: 700; }

/* ---------- HTML teaser: uniform 2x2 grid ---------- */
.teaser { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
/* 1px gap over a line-colored bg draws the clean cross divider */
.teaser-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); }
.tcell { background: #fff; padding: 24px 28px; display: flex; flex-direction: column; }

/* shared pill tag — top-left in every cell */
.tpill {
  align-self: flex-start; font-size: 11px; font-weight: 800; letter-spacing: .06em;
  text-transform: uppercase; padding: 3px 10px; border-radius: 999px; margin-bottom: 12px;
}
.tpill.warn    { color: var(--warn); background: #fbe1e6; }
.tpill.ok      { color: var(--ours); background: #d7f2e5; }
.tpill.neutral { color: var(--ink-soft); background: var(--bg-alt); }

.tp-title { font-family: var(--serif); font-weight: 600; font-size: 20px; margin: 0 0 4px; }
.tp-sub { color: var(--ink-soft); font-size: 13.5px; margin: 0 0 4px; line-height: 1.5; }
.tdiagram { display: flex; justify-content: center; margin: auto 0 6px; padding-top: 10px; }
.tdiagram svg { width: 100%; max-width: 320px; height: auto; }
.tsuper { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--ink-soft); margin: 6px 0 12px; }
.tsuper .halo { flex: 0 0 auto; width: 22px; height: 8px; border-radius: 5px; background: rgba(20,160,110,.24); display: inline-block; }
.teq {
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace; font-size: 13px;
  background: var(--bg-alt); border: 1px solid var(--line); border-radius: 8px;
  padding: 9px 12px; text-align: center; color: var(--ink);
}
.tp-badge { margin-top: 12px; font-size: 13.5px; display: flex; gap: 8px; align-items: flex-start; line-height: 1.5; }
.tp-badge.warn { color: #8f2f3e; }
.tp-badge.ok   { color: #0f7a53; }
.tp-badge .ic { flex: 0 0 auto; font-size: 15px; line-height: 1.4; }

.ta-head { font-family: var(--serif); font-weight: 600; font-size: 20px; margin: 0 0 4px; }
.ta-sub { color: var(--ink-soft); font-size: 13px; margin: 0 0 14px; line-height: 1.5; }
.nba-flex { display: flex; gap: 14px; align-items: center; margin: 8px 0 auto; }
.nba-flex > svg { flex: 0 0 148px; width: 148px; height: auto; }
.nba-txt { font-size: 13px; color: var(--ink-soft); line-height: 1.55; }
.nba-def { display: block; font-family: "SF Mono", ui-monospace, Menlo, monospace; font-size: 12px; color: var(--ink); margin-bottom: 8px; line-height: 1.7; }
.nba-def .dim { display: block; font-family: var(--font); color: var(--ink-faint); font-size: 11px; margin-top: 1px; }
.nba-eq { font-family: "SF Mono", ui-monospace, Menlo, monospace; font-size: 13px; color: var(--warn); font-weight: 600; display: block; margin-bottom: 6px; }
.plegend { display: flex; gap: 16px; justify-content: center; font-size: 12px; margin: 2px 0 8px; }
.plegend span { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-soft); }
.plegend .psw { width: 15px; height: 3px; border-radius: 2px; display: inline-block; }
.plots { display: flex; gap: 16px; }
.plots figure { margin: 0; flex: 1; min-width: 0; }
.plots .pt { text-align: center; font-size: 12.5px; font-weight: 700; color: var(--ink); margin-bottom: 2px; }
.plots svg { width: 100%; height: auto; }
.ta-cap { font-size: 12.5px; color: var(--ink-soft); margin: 10px 0 0; line-height: 1.5; }

.m { font-style: italic; }
.m sub, .m sup { font-style: normal; }

@media (max-width: 760px) { .teaser-grid { grid-template-columns: 1fr; } }

/* ---------- Figure blocks ---------- */
figure.fig { margin: 0 0 8px; text-align: center; }
figure.fig img {
  max-width: 100%; height: auto; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: #fff; cursor: zoom-in;
}
figcaption { color: var(--ink-soft); font-size: 14.5px; margin-top: 12px; max-width: 900px; margin-left: auto; margin-right: auto; }
figcaption b { color: var(--ink); }

/* ---------- Dense-to-sparse result grid ---------- */
.result-block { margin-top: 26px; }
.grid-scroll { overflow-x: auto; padding-bottom: 6px; -webkit-overflow-scrolling: touch; }
table.dgrid { border-collapse: separate; border-spacing: 0; margin: 0 auto; width: 100%; }
table.dgrid th.colhead {
  font-size: 12.5px; font-weight: 600; color: var(--ink-soft);
  padding: 0 0 8px; text-align: center; white-space: nowrap;
}
table.dgrid th.colhead.kf { color: var(--accent-dark); }
table.dgrid th.rowhead {
  font-size: 13px; font-weight: 600; color: var(--ink);
  text-align: right; padding: 0 12px 0 0; white-space: nowrap; vertical-align: middle;
}
table.dgrid tr.ours th.rowhead { color: var(--ours); font-weight: 700; }
table.dgrid td { padding: 3px; }
table.dgrid td .cell {
  position: relative; width: 100%; min-width: 110px;
  border-radius: 6px; overflow: hidden; background: var(--bg-alt);
  border: 1px solid var(--line); line-height: 0;
}
table.dgrid tr.ours td .cell { border-color: var(--ours); box-shadow: 0 0 0 1px var(--ours); }
/* show the FULL frame — never crop (frames are 414x239) */
table.dgrid td .cell img { width: 100%; height: auto; display: block; cursor: zoom-in; }
.rowlabel-strong { display:inline-flex; align-items:center; gap:6px; }
.ours-pill { font-size: 10px; font-weight: 800; letter-spacing:.04em; color:#fff; background: var(--ours); border-radius: 5px; padding: 1px 5px; }

/* figure grids: sample groups + non-highlighted target */
table.figgrid td[rowspan] { vertical-align: middle; }
table.figgrid tr.ours td .cell.tgt { border-color: var(--line); box-shadow: none; }
table.figgrid tr.sample-sep > * { padding-top: 16px; }
table.figgrid td .cell { max-width: 300px; }

/* Optional reference-exemplar column for image comparison grids. */
table.figgrid-ref td.refcell { width: 12%; position: relative; padding: 3px; }
table.figgrid-ref td.refcell > .cell { position: absolute; inset: 3px; min-width: 0; }
table.figgrid-ref td.refcell > .cell img { width: 100%; height: 100%; object-fit: cover; }
/* center the row labels in their own column, clear of the ref exemplars */
table.figgrid-ref th.rowhead { text-align: center; padding: 0 12px; min-width: 92px; }
table.figgrid-ref tr.ours .rowlabel-strong { flex-direction: column; align-items: center; gap: 4px; }

/* legend */
.legend { display:flex; gap:18px; justify-content:center; flex-wrap:wrap; margin: 14px 0 0; font-size:13.5px; color:var(--ink-soft); }
.legend span { display:inline-flex; align-items:center; gap:7px; }
.legend .sw { width: 13px; height:13px; border-radius:4px; display:inline-block; }
.legend .sw.kf { background: var(--accent); }
.legend .sw.ours { background: var(--ours); }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-bottom: 22px; }
.tab {
  padding: 8px 18px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; color: var(--ink-soft); font-size: 15px; font-weight: 550; cursor: pointer;
  transition: all .12s ease;
}
.tab:hover { border-color: var(--accent); color: var(--accent-dark); }
.tab.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.tabpane { display: none; }
.tabpane.active { display: block; animation: fade .25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ---------- Carousel (one case at a time) ---------- */
.carousel-nav { display: flex; align-items: center; justify-content: center; gap: 18px; margin-bottom: 16px; }
.cbtn {
  width: 40px; height: 40px; flex: 0 0 40px; padding: 0; border-radius: 50%;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  font-size: 22px; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color .12s ease, color .12s ease, box-shadow .12s ease;
}
.cbtn:hover { border-color: var(--accent); color: var(--accent-dark); box-shadow: var(--shadow); }
.cbtn:active { transform: translateY(1px); }
.ccount { font-size: 14.5px; color: var(--ink-soft); font-variant-numeric: tabular-nums; min-width: 58px; text-align: center; }
.ccount b { color: var(--ink); font-weight: 700; }
.carousel-slides { position: relative; }
.cslide { display: none; }
.cslide.active { display: block; animation: fade .25s ease; }

/* ---------- Placeholder figure grid (Fig2 / Fig4 to be filled) ---------- */
.ph-note {
  display:flex; align-items:center; gap:10px; justify-content:center;
  font-size: 13.5px; color: var(--ink-faint); margin: 0 0 16px;
}
.ph-note .dot { width:8px; height:8px; border-radius:50%; background: var(--accent); }
table.phgrid { border-collapse: separate; border-spacing: 0; margin: 0 auto; width: 100%; }
table.phgrid th.colhead { font-size: 12.5px; font-weight:600; color: var(--ink-soft); padding: 0 0 8px; text-align:center; white-space:nowrap; }
table.phgrid th.rowhead { font-size: 13px; font-weight:600; color: var(--ink); text-align:right; padding: 0 12px 0 0; white-space:nowrap; }
table.phgrid tr.ours th.rowhead { color: var(--ours); font-weight:700; }
table.phgrid td { padding: 3px; }
table.phgrid .cell {
  aspect-ratio: 1/1; min-width: 92px; border-radius: 6px;
  border: 1.5px dashed var(--line); background: var(--bg-alt);
  display:flex; align-items:center; justify-content:center; color: var(--ink-faint); font-size: 18px;
}
table.phgrid tr.ours .cell { border-color: var(--ours); }
.grp-sep td { padding-top: 10px; }

/* ---------- Quant table ---------- */
.qtable-scroll { overflow-x: auto; }
table.qtable { border-collapse: collapse; margin: 0 auto; font-size: 14.5px; min-width: 640px; width: 100%; }
table.qtable th, table.qtable td { padding: 8px 12px; text-align: center; border-bottom: 1px solid var(--line); }
table.qtable thead th { color: var(--ink-soft); font-weight: 600; font-size: 13px; border-bottom: 2px solid var(--line); }
table.qtable td.method, table.qtable th.method { text-align: left; font-weight: 550; }
table.qtable tr.ours { background: var(--ours-soft); }
table.qtable tr.ours td { font-weight: 700; color: var(--ink); }
table.qtable tr.teacher td { color: var(--ink-faint); font-style: italic; }
table.qtable .best { color: var(--ours); font-weight: 800; }
.qcap { text-align:center; color: var(--ink-faint); font-size: 13px; margin-top: 12px; }
table.qtable tr.fail td { color: var(--warn); font-weight: 700; background: #fdf3f5; }
table.qtable tr.grp td, table.qtable tr.grp th { border-top: 2px solid var(--line); }
.abl-block { margin-top: 26px; }

/* ---------- BibTeX ---------- */
.bibtex { position: relative; }
.bibtex pre {
  background: #12151f; color: #dfe3ee; border-radius: var(--radius);
  padding: 22px 22px; overflow-x: auto; font-size: 13.5px; line-height: 1.6;
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
}
.bibtex .copy {
  position: absolute; top: 12px; right: 12px;
  background: rgba(255,255,255,.1); color: #fff; border: 1px solid rgba(255,255,255,.2);
  border-radius: 8px; padding: 5px 12px; font-size: 12.5px; cursor: pointer;
}
.bibtex .copy:hover { background: rgba(255,255,255,.2); }

/* ---------- Narrative content ---------- */
.eyebrow { text-align: center; font-size: 12.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--accent-dark); margin: 0 0 8px; }
.prose { max-width: 780px; margin: 0 auto; }
.prose p { color: var(--ink-soft); font-size: 16.5px; }
.prose p.lead { color: var(--ink); font-size: 18px; }
.prose b { color: var(--ink); }
.prose .term { color: var(--accent-dark); font-weight: 650; }
.prose .term-bad { color: var(--warn); font-weight: 650; }
.prose .term-good { color: var(--ours); font-weight: 650; }

/* equation display block */
.eq {
  max-width: 780px; margin: 20px auto; display: flex; align-items: center; gap: 14px;
  background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 16px 20px;
}
.eq .body { flex: 1; text-align: center; font-size: 17px; color: var(--ink);
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace; overflow-x: auto; }
.eq .tag { flex: 0 0 auto; color: var(--ink-faint); font-size: 13px; }
.eq.warn { background: #fdf3f5; border-color: #f6d7dd; }
.eq.good { background: var(--ours-soft); border-color: #cdeede; }
.eqnote { max-width: 780px; margin: -6px auto 0; text-align: center; color: var(--ink-faint); font-size: 13.5px; }

/* prominent paper boxes: Definition / Finding (mirrors the boxed callouts in the paper) */
.paperbox {
  max-width: 860px; margin: 32px auto 0; position: relative;
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 26px 22px; background: var(--bg-card); box-shadow: var(--shadow);
  overflow: hidden;
}
.paperbox::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 5px;
}
.paperbox .pb-label {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 11.5px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase;
  padding: 4px 12px; border-radius: 999px; margin-bottom: 12px;
}
.paperbox .pb-label svg { width: 14px; height: 14px; fill: currentColor; }
.paperbox .pb-title { font-family: var(--serif); font-weight: 600; font-size: 21px; margin: 0 0 8px; letter-spacing: -.01em; }
.paperbox p { margin: 0; color: var(--ink-soft); font-size: 16px; line-height: 1.62; }
.paperbox p + p { margin-top: 10px; }
.paperbox b { color: var(--ink); }
.paperbox .katex { color: var(--ink); }
/* Definition — the failure mode (warn accent) */
.paperbox.def { background: linear-gradient(180deg, #fdf5f6 0%, var(--bg-card) 70%); }
.paperbox.def::before { background: linear-gradient(var(--warn), #b23a4a); }
.paperbox.def .pb-label { color: var(--warn); background: #fbe1e6; }
.paperbox.def .pb-title { color: #9c2f3d; }
/* Finding — the takeaway (accent/violet) */
.paperbox.finding { background: linear-gradient(180deg, #f4f6ff 0%, var(--bg-card) 70%); }
.paperbox.finding::before { background: linear-gradient(var(--accent), #7048e8); }
.paperbox.finding .pb-label { color: var(--accent-dark); background: var(--accent-soft); }
.paperbox.finding .pb-title { color: var(--accent-dark); }
@media (max-width: 720px) { .paperbox { padding: 22px 18px 18px; } .paperbox .pb-title { font-size: 19px; } }

/* callout box */
.callout { max-width: 820px; margin: 22px auto 0; border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius-sm); padding: 16px 20px; background: var(--bg-card); box-shadow: var(--shadow); }
.callout.bad { border-left-color: var(--warn); }
.callout.good { border-left-color: var(--ours); }
.callout h4 { margin: 0 0 5px; font-size: 15.5px; }
.callout.bad h4 { color: var(--warn); } .callout.good h4 { color: var(--ours); }
.callout p { margin: 0; color: var(--ink-soft); font-size: 14.5px; line-height: 1.55; }

/* two-setting comparison */
.settings { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 8px; }
.setting { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow); }
.setting h4 { margin: 0 0 4px; font-size: 16.5px; }
.setting .who { font-size: 13px; color: var(--ink-faint); margin: 0 0 12px; }
.setting p { color: var(--ink-soft); font-size: 14px; margin: 0 0 12px; }
.condeq { font-size: 13px; background: var(--bg-alt); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; color: var(--ink); }
.condeq .katex-display { text-align: left; margin: 0; }
.condeq .hl { color: var(--warn); font-weight: 700; }
.condeq-center { max-width: 620px; margin: 0 auto; background: var(--bg-card); }
.condeq-center .katex-display { text-align: center; }

/* verdict chip inside setting-card titles */
.setting-verdict {
  display: inline-block; vertical-align: 2px; margin-left: 8px;
  font-size: 11px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase;
  padding: 2px 9px; border-radius: 999px; white-space: nowrap;
}
.setting-verdict.good { color: var(--ours); background: var(--ours-soft); }
.setting-verdict.bad  { color: var(--warn); background: #fbe1e6; }
.clab-rms { font-weight: 500; color: var(--ink-faint); font-size: 12px; }

/* ---------- Interactive branch-error curves ---------- */
.curvelab {
  max-width: 1180px; margin: 0 auto;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 22px 24px 16px;
}
.clab-bar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 14px; }
.clab-tabs { margin-bottom: 0; justify-content: flex-start; }
.clab-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.clab-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 13px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; color: var(--ink-soft); font-size: 13.5px; font-weight: 550; cursor: pointer;
  font-family: var(--font); transition: all .12s ease;
}
.clab-chip .csw { width: 14px; height: 4px; border-radius: 2px; display: inline-block; }
.clab-chip:not(.on) { opacity: .45; }
.clab-chip:not(.on) .csw { background: var(--ink-faint) !important; }
.clab-chip:hover { border-color: var(--accent); }
.clab-panels { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.clab-panel { margin: 0; min-width: 0; }
.clab-pt { text-align: center; font-size: 14.5px; font-weight: 650; color: var(--ink); margin: 0 0 4px; }
.clab-chart { position: relative; }
.clab-chart svg { width: 100%; height: auto; display: block; cursor: crosshair; }
.cl-grid { stroke: var(--line); stroke-width: 1; }
.cl-axis { stroke: #c9cede; stroke-width: 1; }
.cl-ylab { font-size: 10px; fill: var(--ink-faint); text-anchor: end; font-family: var(--font); font-variant-numeric: tabular-nums; }
.cl-xlab { font-size: 10px; fill: var(--ink-faint); text-anchor: middle; font-family: var(--font); font-variant-numeric: tabular-nums; }
.cl-serie {
  fill: none; stroke-width: 2;
  stroke-dasharray: 1; stroke-dashoffset: 1;
  animation: drawline 1.1s cubic-bezier(.3,.6,.3,1) forwards;
}
@keyframes drawline { to { stroke-dashoffset: 0; } }
.cl-hover[hidden] { display: none; } /* SVG <g> ignores the hidden attr in some engines */
.cl-cross { stroke: var(--ink-faint); stroke-width: 1; stroke-dasharray: 3 3; }
.cl-dot { stroke: #fff; stroke-width: 1.4; }
.clab-tip {
  position: absolute; z-index: 5; pointer-events: none;
  background: rgba(18, 21, 31, .94); color: #eef0f7; border-radius: 9px;
  padding: 8px 11px; font-size: 12px; line-height: 1.5; white-space: nowrap;
  box-shadow: 0 8px 24px rgba(10, 12, 20, .28);
}
.clab-tip .step { font-weight: 700; color: #fff; margin-bottom: 3px; font-variant-numeric: tabular-nums; }
.clab-tip .row { display: flex; align-items: center; gap: 7px; }
.clab-tip .row .csw { width: 12px; height: 4px; border-radius: 2px; display: inline-block; flex: 0 0 auto; }
.clab-tip .row .lab { color: #b9bfd1; }
.clab-tip .row b { margin-left: auto; padding-left: 12px; font-variant-numeric: tabular-nums; }
.clab-tools { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; margin-top: 10px; font-size: 13.5px; color: var(--ink-soft); }
.clab-toggle { display: inline-flex; align-items: center; gap: 7px; cursor: pointer; user-select: none; }
.clab-toggle input { accent-color: var(--accent); width: 15px; height: 15px; }
.clab-x { margin-left: auto; color: var(--ink-faint); font-size: 12.5px; }
.clab-note { max-width: 980px; margin: 14px auto 4px; text-align: center; color: var(--ink-soft); font-size: 14px; line-height: 1.6; }
@media (max-width: 900px) { .clab-panels { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .cl-serie { animation: none; stroke-dasharray: none; stroke-dashoffset: 0; } }

/* results section intro note */
.res-intro { max-width: 820px; margin: 0 auto 26px; }
.res-intro p { color: var(--ink-soft); font-size: 15.5px; text-align: center; }

@media (max-width: 820px) {
  .settings { grid-template-columns: 1fr; }
}

/* ---------- KaTeX integration ---------- */
.katex-display { margin: 0; }
.katex { font-size: 1.05em; }
.eq .body .katex { font-size: 1.18em; }
.eq .body { font-family: inherit; }
.teq .katex, .nba-eq .katex, .nba-def .katex, .condeq .katex, .pr-eq .katex { font-size: 1em; }
.nba-eq .katex { color: var(--warn); }
/* keep the tag label sans, not stretched by KaTeX */
.eq .tag { font-family: var(--font); }

/* ============================================================
   Fancy polish: motion, depth, gradients
   ============================================================ */

/* scroll progress bar */
.progress-bar {
  position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 200;
  background: linear-gradient(90deg, var(--accent), #7048e8 70%, #b06ab3);
  border-radius: 0 3px 3px 0; transition: width .08s linear;
  box-shadow: 0 0 10px rgba(63,94,251,.4);
}

/* animated hero aurora */
header.hero { position: relative; overflow: hidden; }
header.hero::before, header.hero::after {
  content: ""; position: absolute; z-index: 0; border-radius: 50%;
  filter: blur(72px); opacity: .55; pointer-events: none;
}
header.hero::before {
  width: 540px; height: 540px; top: -240px; left: -120px;
  background: radial-gradient(circle, #c6d2ff, transparent 70%);
  animation: drift1 17s ease-in-out infinite alternate;
}
header.hero::after {
  width: 480px; height: 480px; top: -200px; right: -110px;
  background: radial-gradient(circle, #e6d8ff, transparent 70%);
  animation: drift2 21s ease-in-out infinite alternate;
}
header.hero .wrap { position: relative; z-index: 1; }
@keyframes drift1 { from { transform: translate(0,0) scale(1); } to { transform: translate(70px,46px) scale(1.18); } }
@keyframes drift2 { from { transform: translate(0,0) scale(1); } to { transform: translate(-56px,54px) scale(1.12); } }

/* gradient title accent */
h1.title .hl {
  background: linear-gradient(115deg, var(--accent-dark) 10%, #7048e8 60%, #b06ab3);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent;
}

/* staggered hero load-in */
header.hero .wrap > * { animation: heroIn .7s cubic-bezier(.2,.7,.2,1) both; }
header.hero .venue   { animation-delay: .02s; }
header.hero .title   { animation-delay: .09s; }
header.hero .authors { animation-delay: .17s; }
header.hero .affil   { animation-delay: .23s; }
header.hero .contact { animation-delay: .28s; }
header.hero .links   { animation-delay: .34s; }
@keyframes heroIn { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: none; } }

/* scroll-reveal sections (progressive enhancement: only hides once JS marks <html>) */
.has-reveal section {
  opacity: 0; transform: translateY(24px);
  transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1);
}
.has-reveal section.in { opacity: 1; transform: none; }

/* depth on hover for cards */
.setting, .card, .callout { transition: transform .18s ease, box-shadow .18s ease; }
.setting:hover, .card:hover { transform: translateY(-3px); box-shadow: 0 12px 34px rgba(20,25,45,.11); }
.btn { transition: transform .14s ease, box-shadow .14s ease, background .14s ease, border-color .14s ease; }

/* perf: promote aurora to its own compositor layer (blur rendered once) */
header.hero::before, header.hero::after { will-change: transform; }

/* section-title accent underline (grows in on reveal) */
h2.sec { position: relative; }
h2.sec::after {
  content: ""; display: block; width: 52px; height: 3px; margin: 12px auto 0;
  border-radius: 2px; background: linear-gradient(90deg, var(--accent), #7048e8);
}
.has-reveal section h2.sec::after { width: 0; transition: width .6s ease .15s; }
.has-reveal section.in h2.sec::after { width: 52px; }

/* gentle hover zoom on grid images (cell clips the overflow) */
table.dgrid td .cell img { transition: transform .35s ease; }
table.dgrid td .cell:hover img { transform: scale(1.045); }

/* shimmer sweep on the OURS pill */
.ours-pill { position: relative; overflow: hidden; }
.ours-pill::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(110deg, transparent 35%, rgba(255,255,255,.55) 50%, transparent 65%);
  transform: translateX(-130%); animation: shine 3.4s ease-in-out infinite;
}
@keyframes shine { 0%, 55% { transform: translateX(-130%); } 78%, 100% { transform: translateX(130%); } }

/* sheen sweep on buttons (on hover) */
.btn { position: relative; overflow: hidden; }
.btn::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(110deg, transparent 35%, rgba(255,255,255,.28) 50%, transparent 65%);
  transform: translateX(-130%); transition: transform .6s ease;
}
.btn:hover::after { transform: translateX(130%); }

/* floating dot navigation */
.dotnav { position: fixed; right: 20px; top: 50%; transform: translateY(-50%); z-index: 150;
  display: flex; flex-direction: column; gap: 11px; }
.dotnav .dot { position: relative; width: 9px; height: 9px; border-radius: 50%;
  background: var(--line); cursor: pointer; transition: transform .2s ease, background .2s ease; }
.dotnav .dot:hover, .dotnav .dot.active { background: var(--accent); transform: scale(1.4); }
.dotnav .dot.active { box-shadow: 0 0 0 4px var(--accent-soft); }
.dotnav .dot-label { position: absolute; right: 20px; top: 50%;
  transform: translateY(-50%) translateX(6px); opacity: 0; pointer-events: none; white-space: nowrap;
  background: var(--ink); color: #fff; font-size: 12px; padding: 4px 9px; border-radius: 7px;
  box-shadow: var(--shadow); transition: opacity .18s ease, transform .18s ease; }
.dotnav .dot:hover .dot-label { opacity: 1; transform: translateY(-50%) translateX(0); }
@media (max-width: 1180px) { .dotnav { display: none; } }

@media (prefers-reduced-motion: reduce) {
  .has-reveal section { opacity: 1 !important; transform: none !important; }
  header.hero::before, header.hero::after { animation: none; }
  header.hero .wrap > * { animation: none; }
  .ours-pill::after { display: none; }
  table.dgrid td .cell:hover img { transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Footer ---------- */
footer { padding: 40px 0 56px; text-align: center; color: var(--ink-faint); font-size: 14px; }
footer a { color: var(--ink-soft); }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; background: rgba(10,12,20,.9); display: none;
  align-items: center; justify-content: center; z-index: 100; cursor: zoom-out; padding: 30px;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 96vw; max-height: 92vh; border-radius: 8px; box-shadow: 0 20px 60px rgba(0,0,0,.5); }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  body { font-size: 16px; }
  .cards { grid-template-columns: 1fr; }
  section { padding: 40px 0; }
  table.dgrid td .cell { min-width: 84px; }
}

/* ============================================================
   What to Edit Next — paper-specific components
   ============================================================ */

/* Give the full paper title enough room on wide displays. */
h1.title { max-width: 1040px; }
@media (min-width: 900px) { h1.title { max-width: 1040px; } }

.teaser-layout {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(420px, 1.1fr);
  align-items: start;
  gap: 32px;
  max-width: 1180px;
  margin: 0 auto;
}
.teaser-paper { margin: 0 !important; }
.teaser-paper img { width: 100%; box-shadow: var(--shadow); }
.teaser-paper figcaption { margin-top: 10px; font-size: 13px; }
.teaser-explainer {
  padding: 4px 0 0;
}
.teaser-explainer > h2 {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: clamp(25px, 3vw, 34px);
  line-height: 1.15;
}
.teaser-note {
  margin-top: 12px;
  padding: 16px 18px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--warn);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.teaser-note > span {
  display: inline-block;
  margin-bottom: 7px;
  color: var(--warn);
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: .07em;
  text-transform: uppercase;
}
.teaser-note h3 { margin: 0 0 5px; font-size: 16px; line-height: 1.35; }
.teaser-note p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.5; }
.teaser-note.amber { border-left-color: #d99016; }
.teaser-note.amber > span { color: #a66a0b; }
.teaser-note.good { border-left-color: var(--ours); background: linear-gradient(90deg, var(--ours-soft), #fff 48%); }
.teaser-note.good > span { color: var(--ours); }
.validity-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 11px; }
.validity-tags b {
  padding: 3px 8px;
  color: #0f7a53;
  background: #d7f2e5;
  border-radius: 999px;
  font-size: 9.5px;
  letter-spacing: .02em;
}

.headline-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  max-width: 1180px;
  margin: 30px auto 0;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.headline-stat {
  min-height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 22px;
  background: var(--bg-card);
  text-align: center;
}
.headline-stat strong {
  color: var(--accent-dark);
  font-family: var(--serif);
  font-size: clamp(25px, 3vw, 34px);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.1;
}
.headline-stat span {
  max-width: 190px;
  margin: 8px auto 0;
  color: var(--ink-soft);
  font-size: 12.5px;
  line-height: 1.45;
}

.stage-overview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 18px;
  max-width: 1120px;
  margin: 30px auto 0;
}
.stage-item {
  min-height: 290px;
  display: flex;
  flex-direction: column;
  padding: 23px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease;
}
.stage-item:hover { transform: translateY(-3px); box-shadow: 0 12px 34px rgba(20,25,45,.11); }
.stage-num {
  color: var(--accent-dark);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.stage-icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  margin: 23px 0 18px;
  color: var(--accent-dark);
  background: var(--accent-soft);
  border-radius: 16px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
}
.stage-item h3 { margin: 0 0 8px; font-family: var(--serif); font-size: 21px; line-height: 1.2; }
.stage-item p { margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.55; }
.stage-item small {
  margin-top: auto;
  padding-top: 20px;
  color: var(--ink-faint);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.stage-click { border-top-color: #7048e8; }
.stage-click .stage-num { color: #7048e8; }
.stage-click .stage-icon { color: #7048e8; background: #f0ebff; }
.stage-ground { border-top-color: var(--ours); }
.stage-ground .stage-num { color: var(--ours); }
.stage-ground .stage-icon { color: var(--ours); background: var(--ours-soft); }
.framework-figure,
.data-figure,
.verifier-figure { margin-top: 34px !important; }
.framework-figure img,
.data-figure img,
.verifier-figure img { width: 100%; box-shadow: var(--shadow); }
.framework-figure { max-width: 1040px; margin-inline: auto !important; }
.data-figure { max-width: 860px; margin-inline: auto !important; }
.verifier-figure { max-width: 760px; margin-inline: auto !important; }

.pipeline-summary {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  max-width: 980px;
  margin: 32px auto;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.pipeline-summary div { padding: 12px; text-align: center; }
.pipeline-summary strong { display: block; color: var(--accent-dark); font-family: var(--serif); font-size: 26px; line-height: 1; }
.pipeline-summary span { display: block; margin-top: 7px; color: var(--ink-faint); font-size: 11px; }
.pipeline-summary i { color: var(--ink-faint); font-style: normal; }
.pipeline-summary .pipeline-final { background: var(--ours-soft); border-radius: 10px; }
.pipeline-summary .pipeline-final strong { color: var(--ours); }

#click-alignment {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(700px 280px at 8% 18%, rgba(63, 94, 251, .06), transparent 72%),
    radial-gradient(620px 260px at 92% 24%, rgba(112, 72, 232, .06), transparent 72%),
    #fff;
}
#click-alignment .wrap-wide { max-width: 1220px; }
.stage2-lead {
  max-width: 760px;
  margin: 18px auto 0;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.65;
  text-align: center;
}
.stage2-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
  gap: 24px;
  max-width: 1160px;
  margin: 34px auto 0;
}
.stage2-panel {
  position: relative;
  overflow: hidden;
  padding: 28px;
  background: linear-gradient(180deg, #fff 0%, #fbfcff 100%);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: 18px;
  box-shadow: 0 14px 42px rgba(20, 25, 45, .08);
}
.stage2-panel::after {
  content: "01";
  position: absolute;
  top: 13px;
  right: 20px;
  color: rgba(63, 94, 251, .09);
  font-family: var(--serif);
  font-size: 58px;
  font-weight: 600;
  line-height: 1;
  pointer-events: none;
}
.stage2-panel.grpo-panel { border-top-color: #7048e8; }
.stage2-panel.grpo-panel::after { content: "02"; color: rgba(112, 72, 232, .09); }
.stage2-label {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 5px 10px;
  color: var(--accent-dark);
  background: var(--accent-soft);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.grpo-panel .stage2-label { color: #7048e8; background: #f0ebff; }
.stage2-panel > h3 { position: relative; z-index: 1; margin: 17px 0 8px; font-family: var(--serif); font-size: 26px; line-height: 1.2; }
.stage2-panel > p { position: relative; z-index: 1; max-width: 48ch; margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.6; }
.preference-pair {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 74px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  margin-top: 22px;
  padding: 16px;
  background: #f7f8fc;
  border: 1px solid var(--line);
  border-radius: 12px;
}
.preference-choice {
  min-height: 128px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 17px;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid #aeb5c8;
  border-radius: 11px;
  box-shadow: 0 4px 14px rgba(20, 25, 45, .04);
}
.preference-choice.clicked {
  background: linear-gradient(145deg, var(--ours-soft), #fff);
  border-color: #bde5d2;
  border-top-color: var(--ours);
}
.preference-choice > span { color: var(--ink-faint); font-size: 9.5px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.preference-choice.clicked > span { color: var(--ours); }
.preference-choice p { margin: 9px 0 0; color: var(--ink); font-size: 14px; font-weight: 600; line-height: 1.45; }
.preference-divider { color: var(--ink-faint); font-size: 9px; font-weight: 800; letter-spacing: .05em; line-height: 1.35; text-align: center; text-transform: uppercase; }
.pair-summary {
  position: relative;
  z-index: 1;
  margin-top: 18px;
  padding: 18px;
  background: rgba(238, 241, 255, .68);
  border: 1px solid #dbe0ff;
  border-radius: 12px;
}
.pair-summary h4 { margin: 0 0 5px; font-size: 15px; }
.pair-summary > p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.5; }
.pair-summary dl { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 17px 0 0; }
.pair-summary dl div { padding: 11px 12px; background: #fff; border: 1px solid var(--line); border-radius: 9px; }
.pair-summary dt { color: var(--accent-dark); font-family: var(--serif); font-size: 21px; font-weight: 600; }
.pair-summary dd { margin: 2px 0 0; color: var(--ink-faint); font-size: 9.5px; text-transform: uppercase; }

.reward-row {
  position: relative;
  z-index: 1;
  counter-reset: reward;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-auto-rows: minmax(102px, 1fr);
  gap: 12px;
  margin: 22px 0 0;
}
.reward-row > span {
  position: relative;
  min-height: 102px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 18px;
  background: linear-gradient(145deg, var(--accent-soft), #f8f9ff);
  border: 1px solid #dbe0ff;
  border-radius: 12px;
  text-align: left;
  transition: transform .16s ease, box-shadow .16s ease;
}
.reward-row > span:hover { transform: translateY(-2px); box-shadow: 0 9px 22px rgba(63, 94, 251, .09); }
.reward-row > span::after {
  counter-increment: reward;
  content: "0" counter(reward);
  position: absolute;
  top: 10px;
  right: 12px;
  color: rgba(47, 71, 201, .32);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .05em;
}
.reward-row b { color: var(--accent-dark); font-size: 14px; }
.reward-row small { margin-top: 4px; color: var(--ink-faint); font-size: 10.5px; }
.reward-row .reward-grounding {
  position: relative;
  background: var(--ours-soft);
  border-color: #bde5d2;
}
.reward-row .reward-grounding::before {
  content: "+ Stage 3";
  position: absolute;
  top: 6px;
  right: 7px;
  color: var(--ours);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.reward-row .reward-grounding b { color: var(--ours); }
.reward-row .reward-grounding::after { color: rgba(20, 160, 110, .42); }
#click-alignment .callout { max-width: 1160px; margin-top: 24px; }
.stage2-warning {
  display: grid;
  grid-template-columns: minmax(170px, 220px) 1fr;
  align-items: center;
  gap: 22px;
  padding: 0 22px 0 0;
  overflow: hidden;
}
.warning-metric {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 18px 22px;
  background: #fdf3f5;
  border-right: 1px solid #f3d6dc;
  text-align: center;
}
.warning-metric strong { color: var(--warn); font-family: var(--serif); font-size: 25px; line-height: 1; }
.warning-metric span { margin-top: 6px; color: #a85a67; font-size: 9.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.stage2-warning > div:last-child { padding-block: 16px; }

.verifier-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 30px auto;
}
.verifier-steps > div {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.verifier-steps span {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--ours);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 800;
}
.verifier-steps h4 { margin: 14px 0 5px; font-size: 14px; }
.verifier-steps p { margin: 0; color: var(--ink-soft); font-size: 12.5px; line-height: 1.5; }

.results-tabs { max-width: 1000px; margin: 30px auto 0; }
.result-table { background: #fff; }
.result-table th,
.result-table td { padding-block: 11px !important; }
.result-callouts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 20px;
}
.result-callouts div {
  padding: 18px;
  background: var(--ours-soft);
  border: 1px solid #cdeede;
  border-radius: var(--radius-sm);
  text-align: center;
}
.result-callouts strong { display: block; color: var(--ours); font-family: var(--serif); font-size: 27px; line-height: 1; }
.result-callouts span { display: block; margin-top: 6px; color: var(--ink-soft); font-size: 11px; }

.online-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.online-metrics article {
  min-height: 240px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 26px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}
.online-metrics article:nth-child(2) { border-top-color: #7048e8; }
.online-metrics article:nth-child(3) { border-top-color: var(--ours); }
.online-metrics span { color: var(--ink-faint); font-size: 11px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.online-metrics strong { display: block; margin: 14px 0; color: var(--accent-dark); font-family: var(--serif); font-size: 42px; line-height: 1; }
.online-metrics article:nth-child(2) strong { color: #7048e8; }
.online-metrics article:nth-child(3) strong { color: var(--ours); }
.online-metrics p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.online-note { margin: 18px 0 0; color: var(--ink-faint); font-size: 12.5px; text-align: center; }
.verifier-study {
  max-width: 1000px;
  margin: 0 auto;
  padding-top: 4px;
}
.verifier-study > h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(23px, 3vw, 31px);
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
}
.verifier-study-sub {
  max-width: 720px;
  margin: 12px auto 28px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.6;
  text-align: center;
}
.verifier-finding { margin-top: 28px; }

.lightbox-close {
  position: fixed;
  top: 18px;
  right: 22px;
  width: 42px;
  height: 42px;
  color: #fff;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50%;
  cursor: pointer;
  font-size: 25px;
  line-height: 1;
}

@media (max-width: 900px) {
  .teaser-layout { grid-template-columns: 1fr; }
  .teaser-paper { width: min(100%, 560px); margin-inline: auto !important; }
  .teaser-explainer { max-width: 680px; margin-inline: auto; }
  .headline-stats { grid-template-columns: 1fr 1fr; }
  .stage-overview { grid-template-columns: 1fr; gap: 14px; }
  .stage-item { min-height: 280px; }
  .stage2-columns { grid-template-columns: 1fr; }
  .verifier-steps { grid-template-columns: 1fr 1fr; }
  .online-metrics { grid-template-columns: 1fr; }
  .online-metrics article { min-height: 200px; }
}

@media (max-width: 620px) {
  .headline-stats { grid-template-columns: 1fr; }
  .headline-stat { min-height: 112px; }
  .pipeline-summary { grid-template-columns: 1fr; gap: 4px; }
  .pipeline-summary i { transform: rotate(90deg); text-align: center; }
  .preference-pair { grid-template-columns: 1fr; }
  .preference-choice { min-height: 108px; }
  .reward-row { grid-template-columns: 1fr 1fr; }
  .stage2-panel { padding: 22px; }
  .stage2-warning { grid-template-columns: 1fr; gap: 0; padding: 0; }
  .warning-metric { border-right: 0; border-bottom: 1px solid #f3d6dc; }
  .stage2-warning > div:last-child { padding: 18px; }
  .verifier-steps { grid-template-columns: 1fr; }
  .result-callouts { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .reward-row { grid-template-columns: 1fr; }
  .pair-summary dl { grid-template-columns: 1fr; }
}