:root {
  --bg: #0d1012;
  --card: #111518;
  --card-2: #161b1f;
  --line: #252a2e;
  --line-2: #33393e;
  --text: #ededed;
  --text-2: #b9bdc1;
  --muted: #80868c;
  --cream: #f9f5ea;
  --cream-ink: #0e1113;
  --dot: #9aa1a7;
  --sent: #4fc13e;
  --sent-soft: rgba(79, 193, 62, .16);
  --found: #8c7dff;
  --grad: linear-gradient(259deg, #187e08 -13.86%, #2d1ab9 71.58%);
  --serif: "Newsreader", "Tiempos Headline", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --wrap: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; background: var(--bg); }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--text); font: 400 16px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden;
}
a { color: inherit; }
button, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--cream); outline-offset: 3px; border-radius: 4px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }

/* ---------- type ---------- */
.display {
  font: 300 clamp(48px, 7.8125vw, 80px)/1.02 var(--serif); letter-spacing: -0.02em; color: var(--cream);
  margin: 0 auto; text-wrap: balance; font-optical-sizing: auto;
}
.h2 { font: 300 clamp(32px, 4vw, 48px)/1.08 var(--serif); letter-spacing: -0.015em; color: var(--cream); margin: 0; text-wrap: balance; }
.eyebrow {
  font: 500 12px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .12em; color: var(--muted);
  margin: 0 0 14px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
}
.eyebrow::before { content: ""; width: 6px; height: 6px; background: var(--grad); display: inline-block; }
.answer .eyebrow::before, .askback .eyebrow::before, .note .eyebrow::before, .right > .eyebrow::before,
.tbl caption::before, .ab-step .eyebrow::before, .sub-card .eyebrow::before { display: none; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--cream); color: var(--cream-ink); border: 1px solid var(--cream); border-radius: 6px;
  padding: 10px 20px; font: 500 16px/1.35 var(--sans); text-decoration: none; transition: background .2s, color .2s;
}
.btn:hover { background: transparent; color: var(--cream); }
.btn-sm { padding: 7px 14px; font-size: 14px; }

/* ---------- nav ---------- */
.nav { position: fixed; inset: 0 0 auto 0; z-index: 20; }
.nav::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  background: linear-gradient(rgba(13, 16, 18, .72) 0%, rgba(13, 16, 18, .45) 70%, rgba(13, 16, 18, 0) 100%);
}
.nav-in { position: relative; max-width: 1360px; margin: 0 auto; padding: 18px var(--gutter); display: flex; align-items: center; gap: 32px; }
.brand { display: flex; align-items: center; gap: 10px; font: 500 22px/1 var(--sans); letter-spacing: -.02em; color: var(--cream); text-decoration: none; }
.mark { width: 20px; height: 20px; background:
  radial-gradient(circle, var(--cream) 0 2.2px, transparent 2.6px) 0 0 / 6.67px 6.67px; border-radius: 3px; }
.links { display: flex; gap: 28px; margin-left: auto; font-size: 14px; }
.links a { text-decoration: none; opacity: .8; transition: opacity .2s; }
.links a:hover { opacity: 1; }

/* ---------- hero ---------- */
.hero { position: relative; min-height: max(640px, 100svh); display: flex; flex-direction: column; justify-content: center; overflow: hidden; isolation: isolate; }
.mosaic { position: absolute; inset: 0; width: 100%; height: 100%; image-rendering: pixelated; z-index: -3; display: block; }
.mosaic-grid { position: absolute; inset: 0; z-index: -2; pointer-events: none;
  background:
    repeating-linear-gradient(90deg, var(--bg) 0 1px, transparent 1px 6px),
    repeating-linear-gradient(0deg, var(--bg) 0 1px, transparent 1px 6px); }
.hero-fade { position: absolute; inset: auto 0 0 0; height: 55%; z-index: -1; pointer-events: none;
  background: linear-gradient(to top, var(--bg) 0%, rgba(13, 16, 18, .7) 50%, rgba(13, 16, 18, 0) 100%); }
.hero::after { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(ellipse 46% 38% at 50% 48%, rgba(13, 16, 18, .82), rgba(13, 16, 18, 0) 100%); }
.hero-in { text-align: center; padding: 120px var(--gutter) 40px; max-width: 1080px; margin: 0 auto; }
.lede { max-width: 640px; margin: 26px auto 34px; font-size: clamp(16px, 1.4vw, 18px); color: var(--text-2); text-wrap: balance; }
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); max-width: 1200px; width: calc(100% - 2 * var(--gutter));
  margin: 24px auto 40px; border-top: 1px solid var(--line); padding-top: 22px; gap: 16px;
}
.stats div { padding-right: 12px; }
.stats dt { font: 300 clamp(28px, 3vw, 40px)/1 var(--serif); color: var(--cream); letter-spacing: -.01em; }
.stats dd { margin: 8px 0 0; font: 12px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }

/* ---------- sections ---------- */
.sec { padding: clamp(80px, 11vw, 150px) 0 0; }
.sec-head { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(24px, 5vw, 80px); align-items: end; margin-bottom: clamp(36px, 4.5vw, 60px); }
.sec-side { margin: 0; color: var(--text-2); font-size: 16px; max-width: 46ch; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; }

/* ---------- demo ---------- */
.demo { padding: clamp(18px, 2.4vw, 32px); }
.demo-bar { display: flex; align-items: center; gap: 8px; min-width: 0; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.icon { width: 40px; height: 40px; flex: none; border: 1px solid var(--line-2); background: transparent; border-radius: 6px; cursor: pointer; font-size: 17px; }
.icon:hover { border-color: var(--cream); }
#picker {
  flex: 1; min-width: 0; height: 40px; border: 1px solid var(--line-2); background: var(--card-2); border-radius: 6px;
  padding: 0 12px; font-size: 15px; cursor: pointer; color: var(--text);
}
.count { color: var(--muted); font: 13px var(--mono); white-space: nowrap; padding-left: 6px; }
.loading { display: flex; gap: 12px; align-items: center; color: var(--muted); font: 14px var(--mono); padding: 64px 0; justify-content: center; }
.spin { width: 14px; height: 14px; border: 2px solid var(--line-2); border-top-color: var(--sent); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.ask { padding: 26px 0 8px; }
.meta { display: flex; gap: 14px; align-items: center; color: var(--muted); font: 13px var(--mono); flex-wrap: wrap; }
.chip { border: 1px solid var(--line-2); color: var(--text); border-radius: 999px; padding: 3px 11px; font: 12px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.question { font: 300 clamp(28px, 3.3vw, 44px)/1.12 var(--serif); letter-spacing: -.015em; color: var(--cream); margin: 14px 0 26px; max-width: 30ch; text-wrap: balance; }

.cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr); gap: clamp(24px, 3.6vw, 56px); align-items: start; }

.archive { margin: 0 0 28px; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 14px 14px 12px; }
#field { width: 100%; height: clamp(150px, 22vh, 230px); display: block; }
figcaption { font-size: 15px; color: var(--text-2); margin-top: 10px; }
figcaption b { color: var(--cream); font-weight: 500; }
figcaption .pct { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; font-weight: 600; filter: brightness(1.9) saturate(1.2); }
.legend { list-style: none; display: flex; flex-wrap: wrap; gap: 6px 16px; padding: 0; margin: 8px 0 0; font: 12px var(--mono); color: var(--muted); }
.legend li { display: flex; align-items: center; gap: 6px; }
.d { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.d.ink { background: var(--dot); opacity: .5; }
.d.sent { background: var(--sent); }
.d.ring { background: var(--sent); box-shadow: 0 0 0 2px var(--bg), 0 0 0 3.5px var(--cream); }
.d.hollow { border: 2px solid var(--found); }

.answer { border-top: 1px solid var(--line); padding-top: 18px; margin-bottom: 28px; }
.big { font: 300 clamp(40px, 4.6vw, 64px)/1.02 var(--serif); letter-spacing: -.02em; color: var(--cream); overflow-wrap: anywhere; }
.big.abstain { color: var(--text-2); font-style: italic; }
.big.abstain::before { content: ""; display: inline-block; width: .42em; height: .42em; border: 2px solid currentColor; border-radius: 50%; margin-right: .28em; vertical-align: .06em; }
.sub { color: var(--muted); margin-top: 10px; font: 13px/1.5 var(--mono); }
.sub .ok { color: var(--sent); }
.sub .bad { color: #ff8a6b; }

.askback { border: 1px solid var(--line); border-radius: 8px; padding: 18px; margin-bottom: 28px; position: relative; overflow: hidden; }
.askback::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 2px; background: var(--grad); }
.badge { border: 1px solid var(--found); color: var(--found); border-radius: 999px; padding: 1px 8px; text-transform: none; letter-spacing: 0; font-size: 12px; }
.badge.sim { border-color: var(--line-2); color: var(--muted); }
.flip { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; font: 300 30px/1.15 var(--serif); color: var(--cream); }
.flip .was { color: var(--muted); text-decoration: line-through; text-decoration-thickness: 1.5px; }
.flip .arrow { color: var(--found); font-family: var(--sans); font-size: 22px; }
.flip .pending { color: var(--muted); font-style: italic; }
#absearches { list-style: none; padding: 0; margin: 16px 0 0; counter-reset: s; }
#absearches > li { margin: 0 0 14px; }
#absearches .q { font: 14px var(--mono); color: var(--text); }
#absearches .q::before { counter-increment: s; content: "search " counter(s) "  "; color: var(--muted); }
#absearches ul { list-style: none; padding: 0 0 0 14px; margin: 8px 0 0; border-left: 1px solid var(--line-2); }
#absearches ul li { font-size: 15px; color: var(--text-2); margin: 6px 0; }
#absearches ul li.hit { color: var(--cream); border-left: 2px solid var(--found); margin-left: -15px; padding-left: 13px; }
#absearches .sd { font: 12px var(--mono); color: var(--muted); margin-right: 8px; }
#absearches .new { font: 10px var(--mono); color: var(--found); border: 1px solid var(--found); border-radius: 999px; padding: 0 6px; margin-right: 8px; text-transform: uppercase; letter-spacing: .08em; }

.note p { margin: 0; font-size: 15px; color: var(--text-2); max-width: 62ch; }
.note .computed { font-family: var(--mono); color: var(--cream); }

.timeline { position: relative; height: 66px; margin: 4px 0 18px; }
.timeline .axis { position: absolute; left: 0; right: 0; top: 30px; height: 1px; background: var(--line-2); }
.timeline .tick { position: absolute; top: 22px; transform: translateX(-50%); text-align: center; cursor: pointer; background: none; border: 0; padding: 0; }
.timeline .tick i { display: block; width: 16px; height: 16px; border-radius: 50%; background: var(--dot); opacity: .45; margin: 0 auto; }
.timeline .tick.cited i { background: var(--sent); opacity: 1; box-shadow: 0 0 0 3px var(--card), 0 0 0 4.5px var(--cream); }
.timeline .tick span { display: block; font: 12px var(--mono); color: var(--muted); margin-top: 6px; white-space: nowrap; }
.timeline .tick.cited span { color: var(--cream); }
.timeline .end { position: absolute; top: 0; font: 11px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.timeline .end.r { right: 0; }

#evidence { max-height: min(720px, calc(100vh - 200px)); min-height: 260px; overflow: auto; padding-right: 10px; scrollbar-width: thin; scrollbar-color: var(--line-2) transparent; }
.pass { border-top: 1px solid var(--line); padding: 16px 0 18px; transition: background .3s; }
.pass.flash { background: var(--sent-soft); }
.pass header { display: flex; gap: 12px; align-items: baseline; font: 12px var(--mono); color: var(--muted); margin-bottom: 10px; flex-wrap: wrap; }
.pass header .cite { color: var(--sent); font-weight: 500; text-transform: uppercase; letter-spacing: .08em; }
.pass.cited { border-top: 1px solid transparent; border-image: var(--grad) 1; }
.line { margin: 0 0 10px; font-size: 17.5px; line-height: 1.6; color: var(--text); }
.line .who { font: 11px var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); display: block; margin-bottom: 2px; }
.line.assistant { color: var(--text-2); }
.gap { color: var(--muted); font: 13px var(--mono); margin: 4px 0 10px; }
mark { background: var(--sent-soft); color: var(--cream); padding: 0 .15em; border-radius: 3px; box-shadow: inset 0 -2px 0 var(--sent); }
mark.alt { background: transparent; color: inherit; box-shadow: inset 0 -2px 0 var(--found); border-radius: 0; }

.keys { margin: 18px 0 0; padding-top: 14px; border-top: 1px solid var(--line); font: 12px var(--mono); color: var(--muted); }

/* ---------- how it works ---------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.steps li { padding: 26px 22px 6px 0; border-right: 1px solid var(--line); margin-right: 22px; }
.steps li:last-child { border-right: 0; margin-right: 0; }
.steps .num { font: 12px var(--mono); color: var(--muted); letter-spacing: .1em; }
.steps h3 { font: 400 24px/1.15 var(--serif); color: var(--cream); margin: 18px 0 12px; letter-spacing: -.01em; }
.steps p { margin: 0; color: var(--text-2); font-size: 15px; }

/* ---------- ask-back ---------- */
.ab-grid { display: grid; grid-template-columns: 1fr 1fr 1.15fr; gap: 16px; }
.ab-step, .ab-num, .sub-card { padding: 28px; }
.ab-step h3 { font: 400 26px/1.15 var(--serif); color: var(--cream); margin: 0 0 12px; }
.ab-step p, .ab-num p, .sub-card p { margin: 0; color: var(--text-2); font-size: 15px; }
.ab-num { position: relative; overflow: hidden; }
.ab-num::before { content: ""; position: absolute; inset: 0; background: var(--grad); opacity: .14; pointer-events: none; }
.kpi { font: 300 72px/1 var(--serif); color: var(--cream); letter-spacing: -.02em; margin-bottom: 14px; }
.kpi span { color: var(--muted); font-size: .55em; }
.ab-num .example { margin-top: 14px; color: var(--cream); }
.ab-num .example .mono { font-size: 13px; color: var(--text-2); }

/* ---------- results ---------- */
.res-grid { display: grid; grid-template-columns: 1.15fr 1fr .9fr; gap: 16px; align-items: stretch; }
.res-grid > .card:not(.sub-card) { padding: 24px 28px 18px; }
.tbl { width: 100%; border-collapse: collapse; font-size: 15px; }
.tbl caption { display: table-caption; caption-side: top; text-align: left; padding-bottom: 6px; }
.tbl th { font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); text-align: left; padding: 0 0 10px; border-bottom: 1px solid var(--line); }
.tbl th:not(:first-child), .tbl td:not(:first-child) { text-align: right; white-space: nowrap; }
.tbl td { padding: 11px 0; border-bottom: 1px solid var(--line); color: var(--text-2); font-variant-numeric: tabular-nums; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl tr.best td { color: var(--cream); }
.tbl tr.best td:not(:first-child) { font-weight: 600; }
.bar { display: inline-block; vertical-align: middle; height: 4px; width: calc((var(--v) - 70) * 2.6px); background: var(--grad); border-radius: 2px; margin-right: 10px; filter: brightness(1.6); }

/* ---------- footer ---------- */
.cta { padding: clamp(80px, 11vw, 150px) 0 0; }
.cta-band { background: var(--grad); }
.cta-in { padding-top: 64px; padding-bottom: 64px; display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
.cta-in p { margin: 0 0 8px; color: rgba(249, 245, 234, .85); max-width: 60ch; }

/* ---------- responsive ---------- */
@media (min-width: 1800px) { .line { font-size: 19px; } :root { --wrap: 1320px; } }
@media (max-width: 1100px) {
  .steps { grid-template-columns: 1fr 1fr; }
  .steps li { border-right: 0; margin-right: 0; border-bottom: 1px solid var(--line); padding-bottom: 22px; }
  .ab-grid, .res-grid { grid-template-columns: 1fr 1fr; }
  .ab-num, .sub-card { grid-column: 1 / -1; }
}
@media (max-width: 900px) {
  .links { display: none; }
  .nav-in { justify-content: space-between; }
  .cols, .sec-head { grid-template-columns: 1fr; }
  .sec-head { align-items: start; }
  #evidence { max-height: none; overflow: visible; }
  .stats { grid-template-columns: 1fr 1fr; row-gap: 24px; }
}
@media (max-width: 600px) {
  .steps, .ab-grid, .res-grid { grid-template-columns: 1fr; }
  .hero-in { padding-top: 110px; }
  .br-lg { display: none; }
  .d.ring { margin-left: 3px; }
  .demo { padding: 14px; }
  .count { display: none; }
  .kpi { font-size: 60px; }
  .ab-step, .ab-num, .sub-card, .res-grid > .card:not(.sub-card) { padding: 22px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }