/* Colors are sampled from the paper figures: teal is the offline phase of
   Fig. 1, coral the test-time phase, and red / green / blue the policy,
   executed and retrieved actions of Fig. 3. */
:root {
  --paper: #ffffff;
  --ink: #16202a;
  --muted: #58606e;
  --faint: #8b949c;
  --rule: #e4dff3;
  --card: #ffffff;
  --teal: #029a9f;
  --teal-2: #1ea6b6;
  --teal-soft: #47a4ab;
  --teal-tint: #eafaf9;
  --coral: #fb6544;
  --coral-soft: #f0a090;
  --coral-tint: #fff4ec;
  --deep: #900300;
  --policy: #c0392b;
  --exec: #1e8449;
  --demo: #1f5fa8;
  --gold: #e9b72f;
  --edge: #a9c3c7;
  --edge-sp: #c9cfd3;
  --grid: rgba(30, 30, 60, 0.035);
  --brand: #6a4fd4;
  --brand-2: #9a85ec;
  --brand-tint: #f3f0fe;
  --shadow: 0 1px 2px rgba(60, 40, 130, 0.05), 0 10px 30px rgba(90, 70, 170, 0.08);
  --lav: #7c6ad6;
  --lav-tint: #efebfd;
  color-scheme: light;
  --serif: "STIX Two Text", "Times New Roman", Times, serif;
  --sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  margin: 0;
  background-color: var(--paper);
  background-image: radial-gradient(var(--grid) 1px, transparent 1px);
  background-size: 22px 22px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
}
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.01em; margin: 0; }
a { color: var(--teal); }
img { max-width: 100%; display: block; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 28px; } }

#progress { position: fixed; inset: 0 auto auto 0; height: 3px; width: 0; z-index: 60;
  background: linear-gradient(90deg, var(--brand), var(--coral)); }

/* side nav */
.side-nav { position: fixed; left: 22px; top: 50%; transform: translateY(-50%); z-index: 40; display: none; }
@media (min-width: 1380px) { .side-nav { display: block; } }
.side-nav .cap { font-size: 10px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--faint); margin: 0 0 14px 22px; }
.side-nav ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--rule); }
.side-nav li a { display: flex; gap: 10px; align-items: baseline; padding: 5px 0 5px 20px; margin-left: -1px;
  border-left: 2px solid transparent; text-decoration: none; color: var(--muted); font-family: var(--serif); font-size: 15px; }
.side-nav li a span { font-family: var(--mono); font-size: 11px; color: var(--faint); }
.side-nav li a.on { color: var(--ink); border-left-color: var(--brand); }
.side-nav li a.on span { color: var(--brand); }

/* hero */
header.hero { padding: 64px 0 24px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font-size: 11px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
  border: 1px solid var(--rule); background: var(--card); border-radius: 999px; padding: 4px 11px; }
.chip.hot { color: var(--deep); border-color: color-mix(in srgb, var(--deep) 35%, transparent); }
.hero h1 { margin-top: 26px; font-size: clamp(40px, 7vw, 76px); line-height: 1.02; font-weight: 700; }
.hero h1 .r2a { background: linear-gradient(100deg, var(--brand) 20%, #a24fc4 62%, var(--coral)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .sub { display: block; margin-top: 12px; font-size: clamp(22px, 3.3vw, 34px); font-weight: 400; font-style: italic;
  color: var(--muted); line-height: 1.2; }
.hero .sub b { font-style: normal; font-weight: 600; color: var(--brand); }
.authors { margin-top: 24px; font-size: 16px; color: var(--muted); }
.links { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 10px; }
.btn { display: inline-flex; align-items: center; gap: 8px; border-radius: 999px; padding: 9px 18px; font-size: 14px; font-weight: 500;
  text-decoration: none; background: var(--ink); color: var(--paper); border: 1px solid var(--ink); transition: background 0.15s, border-color 0.15s; }
.btn:hover { background: var(--brand); border-color: var(--brand); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { color: #fff; }
.btn.off { opacity: 0.45; pointer-events: none; }
.btn svg { width: 16px; height: 16px; }

.stats { margin-top: 36px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--rule);
  border: 1px solid var(--rule); border-radius: 14px; overflow: hidden; }
@media (min-width: 820px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat { background: var(--card); padding: 18px 18px 16px; }
.stat .n { font-family: var(--serif); font-size: 34px; line-height: 1; font-weight: 700; color: var(--ink); }
.stat .n small { font-size: 16px; font-weight: 600; color: var(--exec); margin-left: 6px; }
.stat .l { margin-top: 8px; font-size: 13px; color: var(--muted); line-height: 1.4; }

/* sections */
section { padding: 34px 0 44px; }
.sec-head { border-top: 1px solid var(--rule); padding-top: 30px; margin-bottom: 24px; }
.kicker { font-size: 11px; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--coral); }
.sec-head h2 { margin-top: 8px; font-size: clamp(28px, 4vw, 40px); line-height: 1.08; }
.lede { font-family: var(--serif); font-size: 19px; line-height: 1.6; color: var(--ink); max-width: 820px; }
.muted { color: var(--muted); }
figure { margin: 0; }
figcaption { margin-top: 12px; font-size: 14px; color: var(--muted); line-height: 1.55; }
figcaption b { color: var(--ink); }
.card { background: var(--card); border: 1px solid var(--rule); border-radius: 14px; box-shadow: var(--shadow); }
.pad { padding: 18px; }
@media (min-width: 720px) { .pad { padding: 22px; } }

/* method explorer */
.explorer { display: grid; grid-template-columns: 1fr; overflow: hidden; }
@media (min-width: 980px) { .explorer { grid-template-columns: minmax(0, 1fr) 300px; } }
.stage { position: relative; background:
  linear-gradient(180deg, var(--teal-tint), transparent 55%), var(--card); border-bottom: 1px solid var(--rule); }
@media (min-width: 980px) { .stage { border-bottom: 0; border-right: 1px solid var(--rule); } }
.stage svg { width: 100%; height: auto; display: block; }
.stage .tag { position: absolute; left: 14px; top: 12px; font-size: 11px; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted); background: color-mix(in srgb, var(--card) 80%, transparent);
  border: 1px solid var(--rule); padding: 3px 9px; border-radius: 999px; }
.stage .banner { position: absolute; left: 50%; top: 12px; transform: translateX(-50%); font-family: var(--serif);
  font-size: 15px; padding: 4px 14px; border-radius: 999px; background: var(--exec); color: #fff; opacity: 0;
  transition: opacity 0.3s; pointer-events: none; white-space: nowrap; }
.stage .banner.show { opacity: 1; }
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 12px 14px; border-top: 1px solid var(--rule);
  background: var(--card); }
.ctl { font: 500 13px var(--sans); color: var(--ink); background: var(--card); border: 1px solid var(--rule); border-radius: 8px;
  padding: 6px 11px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.ctl:hover { border-color: var(--ink); }
.ctl.on { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.ctl svg { width: 14px; height: 14px; }
.seg { display: inline-flex; border: 1px solid var(--rule); border-radius: 8px; overflow: hidden; }
.seg button { font: 500 12px var(--mono); border: 0; background: var(--card); color: var(--muted); padding: 6px 9px; cursor: pointer; }
.seg button.on { background: var(--ink); color: var(--paper); }
.slider { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.slider input { width: 120px; accent-color: var(--coral); }
.slider output { font-family: var(--mono); font-size: 12px; color: var(--ink); min-width: 30px; }
.spacer { flex: 1; }

.panel { padding: 18px; display: flex; flex-direction: column; gap: 16px; background: var(--card); }
.steps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.steps li { display: grid; grid-template-columns: 22px 1fr; gap: 8px; padding: 6px 8px; border-radius: 8px; font-size: 13.5px;
  color: var(--faint); cursor: pointer; transition: background 0.2s, color 0.2s; }
.steps li .i { font: 500 11px var(--mono); padding-top: 2px; }
.steps li.done { color: var(--muted); }
.steps li.on { background: var(--coral-tint); color: var(--ink); }
.steps li.on .i { color: var(--coral); }
.steps li.off-phase.on { background: var(--teal-tint); }
.steps li.off-phase.on .i { color: var(--teal); }
.eq { min-height: 64px; padding: 12px; border-radius: 10px; background: var(--paper); border: 1px solid var(--rule);
  font-size: 15px; overflow-x: auto; }
.eq .say { font-size: 13px; color: var(--muted); margin-top: 8px; line-height: 1.5; }
.meters { display: grid; gap: 10px; }
.meter .row { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); }
.meter .row b { font-family: var(--mono); font-weight: 500; color: var(--ink); }
.meter .bar { height: 7px; border-radius: 99px; background: var(--rule); overflow: hidden; margin-top: 4px; }
.meter .bar i { display: block; height: 100%; width: 0; border-radius: 99px; transition: width 0.45s ease; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 12px; color: var(--muted); padding: 10px 14px;
  border-top: 1px solid var(--rule); background: var(--card); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 18px; height: 3px; border-radius: 2px; display: inline-block; }
.legend i.dot { width: 9px; height: 9px; border-radius: 50%; }
.note { font-size: 12.5px; color: var(--faint); margin-top: 10px; }

.pillars { margin-top: 26px; display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 820px) { .pillars { grid-template-columns: repeat(3, 1fr); } }
.pillar { padding: 20px; border-radius: 14px; border: 1px solid var(--rule); background: var(--card); }
.pillar .k { font: 600 11px var(--sans); letter-spacing: 0.18em; text-transform: uppercase; }
.pillar h3 { font-size: 22px; margin: 6px 0 8px; }
.pillar p { margin: 0; font-size: 14.5px; color: var(--muted); }
.pillar.t { border-top: 3px solid var(--teal); } .pillar.t .k { color: var(--teal); }
.pillar.c { border-top: 3px solid var(--coral); } .pillar.c .k { color: var(--coral); }
.pillar.g { border-top: 3px solid var(--exec); } .pillar.g .k { color: var(--exec); }

/* results */
.tabs { display: inline-flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.tab { font: 500 13px var(--sans); border: 1px solid var(--rule); background: var(--card); color: var(--muted);
  padding: 7px 14px; border-radius: 999px; cursor: pointer; }
.tab.on { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.bars { display: grid; gap: 10px; }
.brow { display: grid; grid-template-columns: 118px 1fr 64px; gap: 10px; align-items: center; }
@media (min-width: 720px) { .brow { grid-template-columns: 160px 1fr 70px; } }
.brow .lab { font-size: 13.5px; color: var(--ink); }
.brow.avg .lab { font-weight: 700; }
.brow .track { position: relative; height: 26px; }
.brow .b { position: absolute; left: 0; height: 11px; border-radius: 3px; width: 0; transition: width 0.7s cubic-bezier(.2,.7,.2,1); }
.brow .b.base { top: 0; background: var(--faint); opacity: 0.55; }
.brow .b.ours { top: 14px; background: linear-gradient(90deg, var(--brand), var(--brand-2)); }
.brow .b span { position: absolute; right: -40px; top: -3px; font: 500 11px var(--mono); color: var(--muted); width: 36px; }
.brow .b.ours span { color: var(--ink); }
.delta { font: 600 12px var(--mono); text-align: right; }
.delta.up { color: var(--exec); } .delta.dn { color: var(--policy); }
.keyrow { display: flex; gap: 16px; font-size: 12px; color: var(--muted); margin-bottom: 12px; }
.keyrow i { display: inline-block; width: 14px; height: 8px; border-radius: 2px; margin-right: 6px; vertical-align: middle; }

.tbl-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: 12px; background: var(--card); }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
th, td { padding: 9px 12px; text-align: center; white-space: nowrap; }
th { font: 600 11px var(--sans); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--rule); }
td:first-child, th:first-child { text-align: left; }
tbody tr { border-bottom: 1px solid color-mix(in srgb, var(--rule) 55%, transparent); }
tbody tr:last-child { border-bottom: 0; }
tr.ours td { background: var(--brand-tint); font-weight: 600; }
tr.ours td:first-child { color: var(--brand); }
td sub { font: 500 10px var(--mono); margin-left: 3px; vertical-align: baseline; }
td sub.up { color: var(--exec); } td sub.dn { color: var(--policy); }
tr.grp td { background: var(--paper); }
details { margin-top: 14px; }
details summary { cursor: pointer; font-size: 14px; color: var(--muted); margin-bottom: 10px; }

.grid2 { display: grid; gap: 18px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .grid2 { grid-template-columns: 1fr 1fr; } }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pair figure { position: relative; }
.pair img { border-radius: 10px; border: 1px solid var(--rule); }
.pair .lbl { position: absolute; left: 8px; top: 8px; font: 700 11px var(--sans); letter-spacing: 0.08em; text-transform: uppercase;
  color: #fff; padding: 3px 10px; border-radius: 999px; }

.lat { display: grid; gap: 12px; }
.lat .brow { grid-template-columns: 96px 1fr 70px; }

pre.bib { font: 12.5px/1.6 var(--mono); background: var(--card); border: 1px solid var(--rule); border-radius: 12px; padding: 16px;
  overflow-x: auto; margin: 0; position: relative; }
.copy { position: absolute; right: 10px; top: 10px; }
footer { padding: 30px 0 60px; font-size: 13px; color: var(--faint); border-top: 1px solid var(--rule); }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* retrieval viewer on logged rollouts */
.viewer { overflow: hidden; }
.vhead { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; justify-content: space-between; padding: 14px 16px;
  border-bottom: 1px solid var(--rule); }
.vtask { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 13.5px; }
.vtask .muted { font-family: var(--serif); font-style: italic; font-size: 15px; }
.vbody { display: grid; grid-template-columns: 1fr; }
@media (min-width: 980px) { .vbody { grid-template-columns: minmax(0, 1fr) 320px; } }
.vstage { position: relative; background: #0d1114; aspect-ratio: 1 / 1; max-height: 720px; }
@media (min-width: 980px) { .vstage { border-right: 1px solid var(--rule); } }
.vstage > canvas { width: 100%; height: 100%; display: block; }
.vbadge, .vphase { position: absolute; top: 12px; font: 500 12px var(--mono); color: #fff; padding: 4px 10px; border-radius: 999px;
  background: rgba(10, 14, 18, 0.62); backdrop-filter: blur(6px); }
.vbadge { left: 12px; }
.vphase { left: 50%; transform: translateX(-50%); font-family: var(--serif); font-size: 15px; font-style: italic; letter-spacing: 0;
  background: rgba(251, 101, 68, 0.88); transition: background 0.3s; white-space: nowrap; }
.vphase.exec { background: rgba(30, 132, 73, 0.88); }
.vphase.graph { background: rgba(2, 154, 159, 0.9); }
.vinset { position: absolute; right: 12px; bottom: 12px; width: 26%; min-width: 108px; border-radius: 10px; overflow: hidden;
  border: 2px solid var(--policy); background: #000; box-shadow: 0 6px 18px rgba(0, 0, 0, 0.45); }
.vinset { transition: box-shadow 0.3s, transform 0.3s; }
.vinset .vfail { position: absolute; left: 0; right: 0; top: 0; aspect-ratio: 1 / 1; display: grid; place-items: center; opacity: 0;
  font: 800 34px var(--sans); letter-spacing: 0.14em; color: #fff; background: rgba(150, 30, 20, 0.22); text-shadow: 0 2px 10px rgba(0, 0, 0, 0.7); transition: opacity 0.35s; pointer-events: none; }
.vinset.dead .vfail { opacity: 1; }
.vinset.dead { box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.35), 0 10px 28px rgba(0, 0, 0, 0.55); transform: scale(1.06); transform-origin: bottom right; }
.vinset canvas { width: 100%; aspect-ratio: 1 / 1; display: block; }
.vinset-cap { display: flex; flex-direction: column; font-size: 11px; line-height: 1.3; color: #fff; background: rgba(192, 57, 43, 0.92);
  padding: 4px 8px; }
.vinset-cap span { opacity: 0.85; }
.vend { position: absolute; left: 12px; bottom: 12px; display: flex; flex-direction: column; gap: 6px; opacity: 0; transition: opacity 0.4s; }
.vend.show { opacity: 1; }
.vend span { font: 700 12px var(--sans); letter-spacing: 0.08em; text-transform: uppercase; color: #fff; padding: 5px 12px; border-radius: 999px; }
.vside { padding: 16px; display: flex; flex-direction: column; gap: 16px; background: var(--card); min-width: 0; }
.vlabel { font: 600 11px var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.vlabel .muted { letter-spacing: 0; text-transform: none; font-weight: 400; }
.cands { display: grid; gap: 4px; }
.cand { display: grid; grid-template-columns: 118px 1fr 38px; gap: 8px; align-items: center; font-size: 12px; color: var(--muted);
  opacity: 0.35; transition: opacity 0.3s; }
.cand.lit { opacity: 1; }
.cand .nm { font-family: var(--mono); font-size: 11px; color: var(--ink); white-space: nowrap; }
.cand .wb { height: 8px; border-radius: 99px; background: var(--rule); overflow: hidden; }
.cand .wb i { display: block; height: 100%; width: 0; background: var(--demo); border-radius: 99px; transition: width 0.5s ease; }
.cand .wv { font: 500 11px var(--mono); text-align: right; color: var(--ink); }
.cand.top .nm, .cand.top .wv { color: var(--demo); font-weight: 700; }
.gates { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; align-items: end; height: 92px; }
.gate b { font: 600 10.5px var(--mono); color: var(--ink); }
.gate { display: flex; flex-direction: column; align-items: center; gap: 4px; height: 100%; justify-content: flex-end; }
.gate .col { width: 100%; max-width: 26px; flex: 1; background: var(--rule); border-radius: 5px; position: relative; overflow: hidden; }
.gate .col i { position: absolute; left: 0; right: 0; bottom: 0; height: 0; border-radius: 5px;
  background: var(--teal); transition: height 0.6s ease; }
.gate span { font: 500 10.5px var(--mono); color: var(--muted); }
.scrub { flex: 1; min-width: 140px; accent-color: var(--coral); }
@media (max-width: 600px) {
  .vinset { width: 30%; }
  .vinset-cap { font-size: 10px; padding: 4px 6px; }
  .vinset-cap #v-base-state { display: none; }
}

/* animated method cards */
.pillar { position: relative; overflow: hidden; box-shadow: var(--shadow); transition: transform 0.25s ease, box-shadow 0.25s ease; }
.pillar:hover { transform: translateY(-3px); box-shadow: 0 2px 4px rgba(60, 40, 130, 0.06), 0 18px 40px rgba(90, 70, 170, 0.14); }
.pill-cv { display: block; width: calc(100% + 40px); margin: -20px -20px 16px; aspect-ratio: 16 / 10; border-bottom: 1px solid var(--rule); }
.pillar.t .pill-cv { background: linear-gradient(180deg, #eefbfa, #f8fdfd); }
.pillar.c .pill-cv { background: linear-gradient(180deg, #fff3ee, #fffaf7); }
.pillar.g .pill-cv { background: linear-gradient(180deg, #eef9f2, #f9fdfa); }

/* latency: success against time */
.lat-svg { width: 100%; height: auto; display: block; overflow: visible; }
.lat-grid { stroke: var(--rule); stroke-width: 1; }
.lat-tick { font: 500 10px var(--mono); fill: var(--faint); }
.lat-ax { font: 500 11px var(--sans); fill: var(--muted); }
.lat-corner { font: italic 600 12px var(--serif); fill: var(--brand); opacity: 0.75; }
.lat-arrow { fill: none; stroke: var(--coral); stroke-width: 1.6; stroke-dasharray: 4 4; opacity: 0; transition: opacity 0.6s ease 1s; }
.lat-note { font: 600 11px var(--mono); fill: var(--coral); opacity: 0; transition: opacity 0.6s ease 1.2s; }
#lat-bars.go .lat-arrow, #lat-bars.go .lat-note { opacity: 1; }
.lat-pt { transform: translate(var(--x), calc(var(--y) + 30px)); opacity: 0; transition: transform 0.8s cubic-bezier(.3,1.5,.5,1), opacity 0.5s ease; }
#lat-bars.go .lat-pt { transform: translate(var(--x), var(--y)); opacity: 1; }
.lat-pt .dot { fill: #b9b3cc; stroke: #fff; stroke-width: 2; }
.lat-pt.ours .dot { fill: var(--brand); }
.lat-pt .ring { fill: none; stroke: var(--brand); stroke-width: 2; transform-origin: 0 0; animation: lat-ping 2s ease-out infinite; }
@keyframes lat-ping { from { transform: scale(1); opacity: 0.8; } to { transform: scale(3); opacity: 0; } }
.lat-name { font: 600 12px var(--sans); fill: var(--ink); }
.lat-pt.ours .lat-name { fill: var(--brand); font-size: 13px; }
.lat-val { font: 500 10px var(--mono); fill: var(--muted); }
@media (prefers-reduced-motion: reduce) { .lat-pt .ring { animation: none; } }

/* ablation as columns; the hatched cap is what each variant loses against R2A */
.vabl { position: relative; padding: 8px 0 0 30px; }
.vabl-plot { position: relative; height: 230px; display: flex; align-items: flex-end; gap: 10px; border-bottom: 1.5px solid var(--rule); }
.vabl-grid { position: absolute; left: -30px; right: 0; border-top: 1px dashed #ecebf2; font: 500 10px var(--mono); color: var(--faint); }
.vabl-grid span { position: absolute; left: 0; top: -7px; }
.vabl-sep { width: 1px; align-self: stretch; background: var(--rule); margin: 0 4px; }
.vc { position: relative; flex: 1; height: 100%; display: flex; align-items: flex-end; justify-content: center; }
.vc-lost { position: absolute; bottom: var(--h); left: 12%; right: 12%; height: 0; border-radius: 6px 6px 0 0; opacity: 0;
  background: repeating-linear-gradient(135deg, rgba(251,101,68,.42) 0 4px, rgba(251,101,68,.1) 4px 8px); transition: opacity .5s ease 1.3s; }
.vc-bar { position: relative; width: 76%; height: 0; border-radius: 7px 7px 2px 2px; transition: height 1s cubic-bezier(.3,1.2,.4,1);
  background: linear-gradient(180deg, #43b8bd, var(--teal)); }
.vc.base .vc-bar { background: linear-gradient(180deg, #d3d0de, #b9b5c9); }
.vc.ours .vc-bar { background: linear-gradient(180deg, var(--brand-2), var(--brand)); box-shadow: 0 8px 22px rgba(106,79,212,.28); }
.vc-val { position: absolute; left: 50%; bottom: calc(100% + 4px); transform: translateX(-50%); font: 700 12px var(--mono); color: var(--ink); white-space: nowrap; }
.vc.ours .vc-val { color: var(--brand); }
.vc-d { position: absolute; left: 50%; transform: translateX(-50%); bottom: calc(var(--r) + 6px); font: 700 11px var(--mono); color: var(--coral);
  opacity: 0; transition: opacity .4s ease 1.5s; white-space: nowrap; }
.vabl.go .vc-bar { height: var(--h); }
.vabl.go .vc-lost { height: calc(var(--r) - var(--h)); opacity: 1; }
.vabl.go .vc-d { opacity: 1; }
.vabl-labs { display: flex; gap: 10px; margin-top: 8px; }
.vabl-labs div { flex: 1; text-align: center; font-size: 11.5px; line-height: 1.25; color: var(--muted); }
.vabl-labs div.ours { color: var(--brand); font-weight: 700; }
.vabl-labs .vabl-sep { flex: 0 0 1px; margin: 0 4px; background: none; }
.vabl-groups { display: flex; gap: 10px; margin-top: 10px; font: 600 10px var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--faint); }
.vabl-groups span { text-align: center; border-top: 1.5px solid var(--rule); padding-top: 6px; }
.abl-key { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 12px; font-size: 12px; color: var(--muted); }
.abl-key i { display: inline-block; width: 14px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.k-lost { background: repeating-linear-gradient(135deg, rgba(251,101,68,.5) 0 3px, rgba(251,101,68,.15) 3px 6px); }
@media (max-width: 520px) { .vabl-plot, .vabl-labs, .vabl-groups { gap: 5px; } .vabl-labs div { font-size: 10px; } .vc-val { font-size: 10.5px; } }
/* method cards: the graph spans the row, retriever and harmonize share the next */
@media (min-width: 820px) { .pillars { grid-template-columns: repeat(2, 1fr); } }
.pillar.t { grid-column: 1 / -1; }
.pillar.t .pill-cv { aspect-ratio: 660 / 256; }
@media (min-width: 820px) {
  .pillar.t { display: grid; grid-template-columns: 1fr; }
  .pillar.t > :not(.pill-cv) { max-width: 760px; }
}