:root {
  color-scheme: dark light;
  --bg: #0a120d;
  --surface: #101b14;
  --surface-strong: #16261b;
  --surface-soft: #1a2c20;
  --text: #f3f7f1;
  --muted: #aab7ad;
  --faint: #728077;
  --line: rgb(231 241 232 / 14%);
  --accent: #b7ef4a;
  --accent-fill: #b7ef4a;
  --accent-ink: #142006;
  --shadow: 0 28px 80px rgb(1 8 4 / 36%);
  --card-radius: 22px;
  --button-radius: 14px;
  --shell: min(1180px, calc(100% - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: clip;
  background: var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; object-fit: contain; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--accent-fill);
  color: var(--accent-ink);
  transform: translateY(-140%);
}
.skip-link:focus { transform: translateY(0); }
.site-shell { width: var(--shell); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgb(10 18 13 / 86%);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.site-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 72px;
  gap: 32px;
}
.brand { display: inline-flex; align-items: center; gap: 11px; width: max-content; font-weight: 900; }
.brand img { flex: 0 0 auto; aspect-ratio: 1; border-radius: 12px; object-fit: contain; }
.brand span { font-size: 18px; letter-spacing: -.02em; }
.nav-links { display: flex; align-items: center; gap: 28px; color: var(--muted); font-size: 14px; }
.nav-links a:hover, .footer-links a:hover, .text-link:hover, .principles-copy a:hover { color: var(--accent); }
.site-nav > .button { justify-self: end; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border: 1px solid var(--accent-fill);
  border-radius: var(--button-radius);
  background: var(--accent-fill);
  color: var(--accent-ink);
  font-weight: 900;
  white-space: nowrap;
  transition: transform .22s ease, background .22s ease, border-color .22s ease;
}
.button:hover { transform: translateY(-2px); }
.button:active { transform: scale(.98); }
.button:focus-visible, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.button-small { min-height: 42px; padding-inline: 17px; font-size: 13px; }
.button-secondary { border-color: var(--line); background: var(--surface); color: var(--text); }
.button-dark { border-color: var(--bg); background: var(--bg); color: var(--text); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, .96fr) minmax(420px, .84fr);
  align-items: center;
  gap: 64px;
  min-height: calc(100dvh - 72px);
  padding-block: 72px 82px;
}
.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .12em;
}
.hero h1, .model-library h2, .capability h2, .section-copy h2, .principles h2, .download-section h2 {
  margin: 0;
  font-size: clamp(48px, 6.2vw, 78px);
  line-height: 1.05;
  letter-spacing: -.065em;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.hero-lead { max-width: 30em; margin: 26px 0 0; color: var(--muted); font-size: 18px; }
.hero-actions, .download-actions { display: flex; align-items: center; gap: 14px; margin-top: 34px; }
.analysis-orbit {
  position: relative;
  isolation: isolate;
  width: min(520px, 100%);
  aspect-ratio: 1 / 1;
  justify-self: end;
  border: 1px solid var(--line);
  border-radius: 50%;
  background:
    radial-gradient(circle at center, rgb(183 239 74 / 14%) 0 23%, transparent 24%),
    radial-gradient(circle at center, transparent 0 49%, rgb(183 239 74 / 12%) 50%, transparent 50.5%),
    radial-gradient(circle at center, transparent 0 72%, var(--line) 72.2%, transparent 72.8%),
    var(--surface);
  box-shadow: var(--shadow);
}
.analysis-orbit::before,
.analysis-orbit::after {
  content: "";
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  background: var(--accent-fill);
  filter: blur(44px);
  opacity: .13;
}
.analysis-orbit::before { width: 34%; height: 34%; top: -4%; right: 5%; }
.analysis-orbit::after { width: 24%; height: 24%; bottom: 3%; left: 5%; }
.pitch-lines {
  position: absolute;
  inset: 12%;
  border: 1px solid rgb(183 239 74 / 28%);
  border-radius: 44%;
  transform: rotate(-11deg);
}
.pitch-lines::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: rgb(183 239 74 / 23%);
}
.pitch-lines span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 30%;
  aspect-ratio: 1;
  border: 1px solid rgb(183 239 74 / 27%);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.orbit-brand {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  justify-items: center;
  gap: 8px;
  width: 38%;
  aspect-ratio: 1;
  padding: 8%;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgb(10 18 13 / 88%);
  box-shadow: 0 18px 54px rgb(1 8 4 / 36%);
  transform: translate(-50%, -50%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.orbit-brand img { width: 72%; height: auto; aspect-ratio: 1; object-fit: contain; filter: drop-shadow(0 10px 28px rgb(183 239 74 / 22%)); }
.orbit-brand strong { color: var(--accent); font-size: 10px; letter-spacing: .14em; white-space: nowrap; }
.orbit-node {
  position: absolute;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgb(16 27 20 / 92%);
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  box-shadow: 0 10px 30px rgb(1 8 4 / 24%);
  animation: orbit-float 5s ease-in-out infinite;
}
.node-fixture { top: 8%; left: 19%; }
.node-data { top: 22%; right: -1%; animation-delay: -.7s; }
.node-model { right: 4%; bottom: 20%; animation-delay: -1.4s; }
.node-view { bottom: 6%; left: 25%; animation-delay: -2.1s; }
.node-review { left: -3%; top: 48%; animation-delay: -2.8s; }
@keyframes orbit-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }

.product-map { border-block: 1px solid var(--line); background: var(--surface); }
.product-map-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.product-map article { display: grid; gap: 3px; padding: 24px; border-right: 1px solid var(--line); }
.product-map article:last-child { border-right: 0; }
.product-map strong { font-size: 17px; }
.product-map span { color: var(--muted); font-size: 12px; }

.model-library { padding-block: 140px 80px; }
.model-library-head { max-width: 850px; }
.model-library h2 { font-size: clamp(44px, 5.8vw, 70px); }
.model-library-head > p:last-child { max-width: 44em; margin: 24px 0 0; color: var(--muted); font-size: 17px; }
.model-library-grid {
  display: grid;
  grid-template-columns: 1.16fr .84fr .84fr;
  grid-template-areas: "feature bivariate negative" "feature elo market";
  gap: 16px;
  margin-top: 70px;
}
.model-card {
  position: relative;
  overflow: hidden;
  min-height: 260px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--card-radius);
  background: var(--surface);
}
.model-card:nth-child(2) { grid-area: bivariate; }
.model-card:nth-child(3) { grid-area: negative; }
.model-card:nth-child(4) { grid-area: elo; }
.model-card:nth-child(5) { grid-area: market; }
.model-card-featured {
  grid-area: feature;
  min-height: 536px;
  background:
    radial-gradient(circle at 64% 74%, rgb(183 239 74 / 18%), transparent 34%),
    var(--surface-strong);
}
.model-family { color: var(--accent); font-size: 11px; font-weight: 900; letter-spacing: .08em; }
.model-card h3 { max-width: 12em; margin: 24px 0 12px; font-size: clamp(24px, 2.6vw, 34px); line-height: 1.14; letter-spacing: -.04em; }
.model-card p { max-width: 32em; margin: 0; color: var(--muted); font-size: 13px; }
.model-library-note { margin: 24px 0 0; color: var(--muted); font-size: 12px; }
.poisson-curve { position: absolute; right: 7%; bottom: 8%; left: 7%; display: flex; align-items: end; gap: 10px; height: 190px; padding: 0 18px 18px; border-bottom: 1px solid var(--line); }
.poisson-curve i { flex: 1; border-radius: 8px 8px 2px 2px; background: var(--accent-fill); opacity: .24; }
.poisson-curve i:nth-child(1){height:9%}.poisson-curve i:nth-child(2){height:27%;opacity:.4}.poisson-curve i:nth-child(3){height:62%;opacity:.7}.poisson-curve i:nth-child(4){height:100%;opacity:1}.poisson-curve i:nth-child(5){height:72%;opacity:.76}.poisson-curve i:nth-child(6){height:34%;opacity:.46}.poisson-curve i:nth-child(7){height:13%}
.model-mark { position: absolute; right: 24px; bottom: 24px; width: 88px; height: 88px; }
.double-rings i { position: absolute; top: 10px; width: 68px; height: 68px; border: 2px solid var(--accent); border-radius: 50%; opacity: .55; }
.double-rings i:first-child { left: 0; }.double-rings i:last-child { right: 0; }
.dispersion-mark { display: flex; align-items: end; gap: 7px; }
.dispersion-mark i { flex: 1; border-radius: 5px 5px 1px 1px; background: var(--accent-fill); opacity: .28; }.dispersion-mark i:nth-child(1){height:28%}.dispersion-mark i:nth-child(2){height:86%;opacity:.75}.dispersion-mark i:nth-child(3){height:52%;opacity:.48}.dispersion-mark i:nth-child(4){height:100%}
.rating-ladder { position: absolute; right: 26px; bottom: 26px; display: flex; align-items: end; gap: 8px; width: 96px; height: 88px; }
.rating-ladder i { flex: 1; border: 1px solid rgb(183 239 74 / 38%); border-radius: 4px 4px 1px 1px; background: rgb(183 239 74 / 15%); }.rating-ladder i:nth-child(1){height:25%}.rating-ladder i:nth-child(2){height:48%}.rating-ladder i:nth-child(3){height:72%}.rating-ladder i:nth-child(4){height:100%;background:var(--accent-fill)}
.market-baseline { position: absolute; right: 28px; bottom: 30px; display: flex; gap: 6px; width: 110px; }
.market-baseline i { height: 12px; border-radius: 4px; background: var(--accent-fill); opacity: .25; }.market-baseline i:first-child{width:52%;opacity:.8}.market-baseline i:nth-child(2){width:29%;opacity:.52}.market-baseline i:last-child{width:19%}

.capability { padding-block: 140px; }
.capability-copy { max-width: 780px; }
.capability h2, .section-copy h2, .principles h2 { font-size: clamp(42px, 5.4vw, 66px); }
.capability-copy > p, .section-copy > p { max-width: 38em; margin: 24px 0 0; color: var(--muted); font-size: 17px; }
.capability-grid {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 16px;
  margin-top: 70px;
}
.capability-grid article {
  min-height: 270px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--card-radius);
  background: var(--surface);
}
.capability-grid .capability-primary {
  grid-row: span 2;
  min-height: 556px;
  background:
    radial-gradient(circle at 75% 72%, rgb(183 239 74 / 19%), transparent 34%),
    var(--surface-strong);
}
.capability-grid article > span { color: var(--accent); font-size: 12px; font-weight: 900; }
.capability-grid h3 { max-width: 13em; margin: 38px 0 12px; font-size: clamp(25px, 3vw, 38px); line-height: 1.18; letter-spacing: -.04em; }
.capability-grid p { max-width: 32em; margin: 0; color: var(--muted); }
.signal-field { position: relative; height: 180px; margin-top: 56px; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 34px 34px; }
.signal-field::before { content: ""; position: absolute; inset: 18% 9%; border-bottom: 2px solid var(--accent); clip-path: polygon(0 78%, 18% 58%, 34% 66%, 50% 28%, 68% 42%, 82% 18%, 100% 0, 100% 10%, 83% 27%, 69% 51%, 51% 37%, 35% 75%, 18% 67%, 0 88%); background: rgb(183 239 74 / 12%); }
.signal-field i { position: absolute; width: 9px; height: 9px; border: 2px solid var(--surface-strong); border-radius: 50%; background: var(--accent-fill); box-shadow: 0 0 0 4px rgb(183 239 74 / 13%); }
.signal-field i:nth-child(1) { left: 9%; top: 69%; }.signal-field i:nth-child(2) { left: 25%; top: 56%; }.signal-field i:nth-child(3) { left: 41%; top: 62%; }.signal-field i:nth-child(4) { left: 56%; top: 35%; }.signal-field i:nth-child(5) { left: 72%; top: 44%; }.signal-field i:nth-child(6) { right: 8%; top: 18%; }
.model-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.model-tags b { padding: 7px 10px; border: 1px solid var(--line); border-radius: 9px; color: var(--muted); font-size: 10px; }
.editorial-lines { display: grid; gap: 9px; margin-top: 30px; }
.editorial-lines i { height: 7px; border-radius: 3px; background: var(--line); }
.editorial-lines i:first-child { width: 92%; background: rgb(183 239 74 / 32%); }.editorial-lines i:nth-child(2) { width: 74%; }.editorial-lines i:last-child { width: 48%; }

.system-section { overflow: hidden; padding-block: 130px 150px; background: var(--surface); }
.section-copy { max-width: 760px; }
.system-board {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  grid-template-areas: "data model" "data context" "review review";
  gap: 16px;
  margin-top: 76px;
}
.system-board article { position: relative; overflow: hidden; min-height: 240px; padding: 30px; border: 1px solid var(--line); border-radius: var(--card-radius); background: var(--surface-strong); }
.system-board p { max-width: 36em; margin: 12px 0 0; color: var(--muted); }
.system-heading { display: flex; align-items: center; gap: 13px; }
.system-heading span { color: var(--accent); font-size: 11px; font-weight: 900; }
.system-heading h3 { margin: 0; font-size: 25px; letter-spacing: -.035em; }
.system-data { grid-area: data; min-height: 500px !important; background: radial-gradient(circle at 74% 72%, rgb(183 239 74 / 16%), transparent 32%), var(--surface-strong) !important; }
.system-model { grid-area: model; }.system-context { grid-area: context; }.system-review { grid-area: review; min-height: 270px !important; }
.data-radar { position: absolute; right: 8%; bottom: 8%; width: 62%; aspect-ratio: 1; border: 1px solid var(--line); border-radius: 50%; background: repeating-radial-gradient(circle at center, transparent 0 17%, var(--line) 17.5% 18%, transparent 18.5% 34%); }
.data-radar::before,.data-radar::after { content: ""; position: absolute; inset: 50% 5% auto; height: 1px; background: var(--line); transform-origin: center; }.data-radar::after { transform: rotate(60deg); }
.data-radar i { position: absolute; width: 10px; height: 10px; border-radius: 50%; background: var(--accent-fill); box-shadow: 0 0 0 5px rgb(183 239 74 / 12%); }
.data-radar i:nth-child(1){left:18%;top:48%}.data-radar i:nth-child(2){left:40%;top:22%}.data-radar i:nth-child(3){right:20%;top:35%}.data-radar i:nth-child(4){right:28%;bottom:18%}.data-radar i:nth-child(5){left:30%;bottom:26%}
.distribution { display: flex; align-items: end; gap: 8px; height: 74px; margin-top: 28px; }
.distribution i { flex: 1; min-width: 8px; border-radius: 5px 5px 2px 2px; background: var(--accent-fill); opacity: .32; }.distribution i:nth-child(1){height:22%}.distribution i:nth-child(2){height:38%}.distribution i:nth-child(3){height:68%;opacity:.6}.distribution i:nth-child(4){height:100%;opacity:1}.distribution i:nth-child(5){height:72%;opacity:.72}.distribution i:nth-child(6){height:44%}.distribution i:nth-child(7){height:25%}
.context-stack { position: absolute; right: 24px; bottom: 28px; width: 42%; height: 72px; }.context-stack i { position: absolute; inset: 0; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-soft); }.context-stack i:nth-child(2){transform:translate(-10px,-10px);opacity:.7}.context-stack i:nth-child(3){transform:translate(-20px,-20px);opacity:.42}
.review-route { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; margin-top: 38px; }
.review-route i { position: relative; height: 58px; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(135deg, rgb(183 239 74 / 20%), transparent); }.review-route i:not(:last-child)::after { content: ""; position: absolute; top: 50%; left: calc(100% + 1px); width: 10px; height: 1px; background: var(--accent); }

.journey { display: grid; grid-template-columns: .85fr 1.15fr; gap: 90px; padding-block: 140px; }
.journey h2 { margin: 0; font-size: clamp(40px, 5vw, 62px); line-height: 1.08; letter-spacing: -.055em; }
.journey-steps { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.journey-steps li { display: grid; grid-template-columns: 52px 1fr; gap: 18px; align-items: center; min-height: 128px; border-bottom: 1px solid var(--line); }
.journey-steps li:first-child { border-top: 1px solid var(--line); }
.journey-steps b { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; background: var(--accent-fill); color: var(--accent-ink); }
.journey-steps div { display: grid; gap: 4px; }.journey-steps strong { font-size: 20px; }.journey-steps span { color: var(--muted); font-size: 13px; }

.model-faq { display: grid; grid-template-columns: .78fr 1.22fr; gap: 90px; padding-block: 40px 140px; }
.model-faq h2 { margin: 0; font-size: clamp(40px, 5vw, 62px); line-height: 1.08; letter-spacing: -.055em; }
.model-faq-list { border-top: 1px solid var(--line); }
.model-faq details { border-bottom: 1px solid var(--line); }
.model-faq summary { position: relative; padding: 26px 42px 26px 0; cursor: pointer; font-size: 18px; font-weight: 900; list-style: none; }
.model-faq summary::-webkit-details-marker { display: none; }
.model-faq summary::after { content: "+"; position: absolute; top: 25px; right: 4px; color: var(--accent); font-size: 24px; font-weight: 400; }
.model-faq details[open] summary::after { content: "−"; }
.model-faq details p { max-width: 46em; margin: -4px 0 26px; color: var(--muted); font-size: 14px; }
  border: 1px solid var(--line);
  border-radius: var(--card-radius);
  box-shadow: var(--shadow);
}
.screen-shot figcaption { display: grid; gap: 2px; padding: 18px 4px 0; }
.screen-shot figcaption strong { font-size: 18px; }
.screen-shot figcaption span { color: var(--muted); font-size: 12px; }

.principles { display: grid; grid-template-columns: 1.05fr .75fr; gap: 110px; padding-block: 140px; }
.principles-copy { align-self: end; }
.principles-copy p { margin: 0 0 18px; color: var(--muted); }
.principles-copy a, .text-link { color: var(--accent); font-weight: 900; }

/* Model knowledge hub */
.model-index-hero { display: grid; grid-template-columns: minmax(0,.82fr) minmax(460px,1.18fr); align-items: center; gap: 72px; min-height: 660px; padding-block: 78px 92px; }
.model-index-hero h1, .model-detail-hero h1 { max-width: 11em; margin: 0; font-size: clamp(48px,6vw,76px); line-height: 1.04; letter-spacing: -.06em; }
.model-index-hero h1 em { color: var(--accent); font-style: normal; }
.model-index-hero > div > p:last-child, .model-detail-copy > p { max-width: 38em; margin: 24px 0 0; color: var(--muted); font-size: 17px; }
.model-index-hero img, .model-method img { width: 100%; aspect-ratio: 1200/630; border: 1px solid var(--line); border-radius: var(--card-radius); object-fit: cover; box-shadow: var(--shadow); }
.model-directory { display: grid; grid-template-columns: 1.22fr .78fr; gap: 16px; padding-block: 0 120px; }
.model-directory-card { min-height: 280px; padding: 34px; border: 1px solid var(--line); border-radius: var(--card-radius); background: var(--surface); }
.model-directory-card-featured { grid-row: span 2; min-height: 576px; background: linear-gradient(150deg,rgb(183 239 74 / 12%),transparent 52%),var(--surface-strong); }
.model-directory-card h2 { max-width: 12em; margin: 24px 0 12px; font-size: clamp(29px,3.2vw,42px); line-height: 1.12; letter-spacing: -.04em; }
.model-directory-card p { max-width: 38em; margin: 0; color: var(--muted); }
.model-card-link { display: inline-block; margin-top: 28px; color: var(--accent); font-weight: 900; }
.catalog-summary { display:flex; flex-wrap:wrap; gap:10px; margin-top:30px; }
.catalog-summary span { display:flex; align-items:baseline; gap:6px; padding:9px 12px; border:1px solid var(--line); border-radius:999px; color:var(--muted); font-size:11px; }
.catalog-summary b { color:var(--text); font-size:16px; }
.representative-models { padding-bottom:110px; }
.representative-models > header { display:grid; grid-template-columns:.7fr 1.3fr; gap:60px; align-items:end; margin-bottom:38px; }
.representative-models > header h2 { margin:0; font-size:clamp(34px,4vw,52px); line-height:1.08; letter-spacing:-.05em; }
.representative-strip { display:grid; grid-template-columns:1.35fr repeat(4,1fr); border-block:1px solid var(--line); }
.representative-strip .model-directory-card { min-height:310px; padding:26px 22px; border:0; border-right:1px solid var(--line); border-radius:0; background:transparent; }
.representative-strip .model-directory-card:last-child { border-right:0; }
.representative-strip .model-directory-card h2 { margin-top:20px; font-size:clamp(22px,2.2vw,32px); }
.representative-strip .model-directory-card p { font-size:12px; }
.catalog-directory { display:grid; gap:90px; padding-bottom:120px; }
.catalog-group > header { display:flex; justify-content:space-between; gap:28px; align-items:end; margin-bottom:22px; }
.catalog-group > header p { margin:0 0 8px; color:var(--accent); font-size:11px; font-weight:900; letter-spacing:.08em; }
.catalog-group > header h2 { margin:0; font-size:clamp(30px,4vw,48px); letter-spacing:-.045em; }
.catalog-group > header > span { color:var(--muted); font-size:12px; }
.catalog-group > header > span a { color:var(--accent); font-weight:900; }
.catalog-list { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); border-top:1px solid var(--line); }
.catalog-item { position:relative; display:grid; align-content:start; min-height:220px; padding:26px 26px 24px 0; border-bottom:1px solid var(--line); color:var(--text); }
.catalog-item:nth-child(3n+2),.catalog-item:nth-child(3n+3) { padding-left:26px; border-left:1px solid var(--line); }
.catalog-item strong { margin:18px 0 9px; font-size:21px; line-height:1.2; }
.catalog-item small { color:var(--muted); font-size:12px; line-height:1.65; }
.catalog-item code { margin-top:auto; padding-top:20px; color:var(--faint); font-size:10px; }
.catalog-item > b { position:absolute; right:18px; bottom:18px; color:var(--accent); font-size:10px; }
.catalog-status { justify-self:start; padding:5px 8px; border:1px solid var(--line); border-radius:999px; color:var(--muted); font-size:10px; font-weight:900; }
.status-available,.status-enabled { border-color:rgb(183 239 74 / 36%); color:var(--accent); }
.status-blocked { border-color:rgb(255 123 133 / 30%); color:#ff9ba3; }
.catalog-item[href]:hover { background:rgb(183 239 74 / 4%); }
.family-hero { max-width:980px; padding-block:78px 90px; }
.family-hero h1 { margin:0; font-size:clamp(46px,6vw,74px); line-height:1.04; letter-spacing:-.06em; }
.family-hero > p:last-child { max-width:48em; margin:26px 0 0; color:var(--muted); font-size:17px; }
.model-index-method { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 60px; margin-bottom: 110px; padding: 56px; border-radius: var(--card-radius); background: var(--accent-fill); color: var(--accent-ink); }
.model-index-method h2 { max-width: 13em; margin: 0; font-size: clamp(36px,5vw,58px); line-height: 1.08; letter-spacing: -.05em; }
.model-index-method p { max-width: 50em; margin: 20px 0 0; color: #314414; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 10px; padding-top: 34px; color: var(--muted); font-size: 12px; }
.breadcrumbs a:hover { color: var(--accent); }
.model-detail { padding-block: 54px 110px; }
.model-detail-hero { display: grid; grid-template-columns: 1fr minmax(360px,.72fr); align-items: center; gap: 86px; min-height: 560px; }
.model-detail-actions { display: flex; align-items: center; gap: 20px; margin-top: 34px; }
.copy-link-button { cursor: pointer; }
.copy-status { min-height: 1.7em; margin: 12px 0 0 !important; color: var(--accent) !important; font-size: 12px !important; }
.formula-panel { display: grid; gap: 20px; padding: 40px; border: 1px solid var(--line); border-radius: var(--card-radius); background: radial-gradient(circle at 80% 10%,rgb(183 239 74 / 14%),transparent 38%),var(--surface-strong); box-shadow: var(--shadow); }
.formula-panel > span { color: var(--accent); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.formula-panel code { white-space: pre-line; color: var(--text); font-family: Consolas,"SFMono-Regular",monospace; font-size: clamp(20px,2.5vw,31px); line-height: 1.45; }
.formula-panel p { margin: 0; color: var(--muted); font-size: 13px; }
.model-detail-section { padding-block: 96px 36px; }
.model-detail-section > h2, .model-method h2, .model-limit h2, .related-models h2 { margin: 0 0 34px; font-size: clamp(35px,4vw,52px); line-height: 1.1; letter-spacing: -.05em; }
.model-spec-grid, .model-output-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 16px; }
.model-spec-grid article, .model-output-grid article { min-height: 190px; padding: 28px; border: 1px solid var(--line); border-radius: var(--card-radius); background: var(--surface); }
.model-spec-grid article:first-child, .model-output-grid article:last-child { grid-row: span 2; }
.model-spec-grid strong, .model-output-grid strong { font-size: 21px; }
.model-spec-grid p, .model-output-grid p { margin: 12px 0 0; color: var(--muted); font-size: 13px; }
.model-method { display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 80px; padding-block: 100px 40px; }
.model-method p { max-width: 40em; color: var(--muted); }
.model-method img { min-height: 360px; }
.model-limit { max-width: 900px; padding-block: 98px; }
.model-limit p { margin: 0; color: var(--muted); font-size: 17px; }
.related-models { padding-block: 20px 100px; }
.related-models > div { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.related-models a { display: grid; gap: 10px; padding: 30px; border: 1px solid var(--line); border-radius: var(--card-radius); background: var(--surface); transition: transform .22s ease,border-color .22s ease; }
.related-models a:hover { transform: translateY(-3px); border-color: var(--accent); }
.related-models span { color: var(--accent); font-size: 11px; font-weight: 900; }
.related-models strong { font-size: 24px; }
.related-models small { color: var(--muted); }
.model-download { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 48px; padding: 54px; border-radius: var(--card-radius); background: var(--accent-fill); color: var(--accent-ink); }
.model-download h2 { margin: 0; font-size: clamp(34px,4.5vw,56px); line-height: 1.08; letter-spacing: -.05em; }
.model-download p { max-width: 44em; margin: 18px 0 0; color: #314414; }

/* Settled expert review archive */
.reviews-hero { display:grid; grid-template-columns:1.2fr .62fr; gap:90px; align-items:end; min-height:610px; padding-block:80px 100px; }
.reviews-hero h1 { margin:0; font-size:clamp(48px,6vw,78px); line-height:1.03; letter-spacing:-.06em; }
.reviews-hero h1 em { color:var(--accent); font-style:normal; }
.reviews-hero > div > p:last-child { max-width:43em; margin:26px 0 0; color:var(--muted); font-size:16px; }
.reviews-hero aside { padding:32px; border-left:1px solid var(--accent); background:linear-gradient(90deg,rgb(183 239 74 / 7%),transparent); }
.reviews-hero aside span { color:var(--accent); font-size:11px; font-weight:900; letter-spacing:.08em; }
.reviews-hero aside strong { display:block; margin:18px 0 10px; font-size:25px; }
.reviews-hero aside p { margin:0; color:var(--muted); font-size:12px; }
.reviews-principles { display:grid; grid-template-columns:repeat(3,1fr); border-block:1px solid var(--line); }
.reviews-principles article { min-height:230px; padding:32px; border-right:1px solid var(--line); }
.reviews-principles article:last-child { border-right:0; }
.reviews-principles b { color:var(--accent); font-family:Consolas,monospace; }
.reviews-principles h2 { margin:36px 0 10px; font-size:23px; }
.reviews-principles p { margin:0; color:var(--muted); font-size:12px; }
.reviews-feed { padding-block:120px; }
.reviews-feed > header { display:flex; justify-content:space-between; gap:30px; align-items:end; margin-bottom:44px; }
.reviews-feed > header h2 { margin:0; font-size:clamp(38px,5vw,62px); letter-spacing:-.05em; }
.reviews-feed > header > p { color:var(--muted); font-size:11px; }
.reviews-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
.review-card { display:grid; min-height:390px; padding:30px; border:1px solid var(--line); border-radius:var(--card-radius); background:var(--surface); }
.review-card-meta,.review-card footer { display:flex; justify-content:space-between; gap:20px; align-items:center; color:var(--muted); font-size:11px; }
.review-card h2 { margin:28px 0; font-size:clamp(24px,3vw,34px); line-height:1.18; letter-spacing:-.035em; }
.review-match { display:grid; grid-template-columns:1fr auto 1fr; gap:18px; align-items:center; margin:0 0 28px; text-align:center; }
.review-match strong:first-child { text-align:right; }.review-match strong:last-child { text-align:left; }
.review-match b { color:var(--accent); font-size:28px; }
.review-card dl { display:grid; grid-template-columns:repeat(3,1fr); margin:0 0 30px; border-block:1px solid var(--line); }
.review-card dl div { padding:16px 12px 16px 0; }
.review-card dt { color:var(--muted); font-size:10px; }.review-card dd { margin:6px 0 0; font-weight:900; }
.review-card footer { margin-top:auto; }
.review-card footer > span { display:grid; grid-template-columns:auto 1fr; column-gap:10px; align-items:center; }
.review-card footer img { grid-row:1 / 3; border-radius:50%; object-fit:cover; }.review-card footer small { color:var(--muted); }
.review-card footer em { color:var(--accent); font-style:normal; font-weight:900; }
.reviews-empty { padding:48px; border:1px dashed var(--line); color:var(--muted); text-align:center; }
.review-methodology { display:grid; grid-template-columns:.8fr 1.2fr; gap:100px; padding-block:30px 130px; }
.review-methodology h2 { margin:0; font-size:clamp(38px,5vw,58px); line-height:1.08; letter-spacing:-.05em; }
.review-methodology > div:last-child { align-self:end; color:var(--muted); }

.download-section {
  display: grid;
  grid-template-columns: 1fr 300px;
  align-items: center;
  gap: 90px;
  overflow: hidden;
  margin-bottom: 110px;
  padding: 66px 72px;
  border-radius: var(--card-radius);
  background: var(--accent-fill);
  color: var(--accent-ink);
}
.download-section .eyebrow { color: #38520b; }
.download-section h2 { font-size: clamp(42px, 5.6vw, 68px); }
.download-section p { max-width: 38em; margin: 20px 0 0; color: #2e4210; }
.download-section small { display: block; margin-top: 24px; color: #3d5419; }
.download-section .text-link { color: var(--accent-ink); }
.download-logo { width: 300px; height: auto; aspect-ratio: 1; object-fit: contain; filter: drop-shadow(0 22px 40px rgb(31 54 3 / 25%)); }

.footer { border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 40px; padding-block: 40px 48px; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { flex: 0 0 auto; aspect-ratio: 1; border-radius: 12px; object-fit: contain; }
.footer-brand div { display: grid; }
.footer-brand span, .footer-meta { color: var(--muted); font-size: 11px; }
.footer-links { display: flex; align-items: center; gap: 20px; color: var(--muted); font-size: 12px; }
.footer-meta { grid-column: 1 / -1; display: flex; justify-content: space-between; padding-top: 20px; border-top: 1px solid var(--line); }
.footer-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 30px; color: var(--muted); font-size: 12px; }
.footer-row > span:last-child { display: flex; flex-wrap: wrap; gap: 18px; }

.reveal { opacity: 0; transform: translateY(18px); }
.reveal.is-visible { opacity: 1; transform: translateY(0); transition: opacity .7s ease, transform .7s cubic-bezier(.16, 1, .3, 1); }

/* Shared content and download pages */
.content-page { min-height: 70dvh; padding-block: 80px 110px; }
.content-page h1 { margin: 0 0 34px; font-size: clamp(42px, 6vw, 68px); letter-spacing: -.05em; }
.panel { max-width: 820px; margin-bottom: 16px; padding: 28px; border: 1px solid var(--line); border-radius: var(--card-radius); background: var(--surface); }
.panel h2 { margin-top: 0; }
.panel p { color: var(--muted); }
.panel .warning { color: var(--text); font-weight: 900; }
.download-only-page, .ios-landing-page { min-height: 100dvh; display: grid; place-items: center; padding: 24px; }
.download-only, .ios-shell { width: min(620px, 100%); }
.download-card, .ios-card { padding: 28px; border: 1px solid var(--line); border-radius: var(--card-radius); background: var(--surface); box-shadow: var(--shadow); }
.download-card h1, .ios-card h1 { margin: 0; font-size: 34px; letter-spacing: -.04em; }
.download-card p { color: var(--muted); }
.download-poster { width: min(100%, 520px); margin: auto; border-radius: 16px; }
.ios-guide-head { display: flex; align-items: center; gap: 16px; }
.ios-logo { width: 74px; height: auto; aspect-ratio: 1; border-radius: 18px; object-fit: contain; }
.ios-step-list { display: grid; gap: 10px; margin-top: 26px; }
.ios-step { display: grid; grid-template-columns: 36px 1fr; align-items: center; gap: 12px; padding: 12px; border-radius: 14px; background: var(--surface-soft); }
.ios-step b { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 10px; background: var(--accent-fill); color: var(--accent-ink); }
.ios-actions { margin-top: 22px; }

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f2f6ee;
    --surface: #e9f0e6;
    --surface-strong: #dfe9dc;
    --surface-soft: #d9e5d6;
    --text: #122016;
    --muted: #536057;
    --faint: #768078;
    --line: rgb(21 43 27 / 14%);
    --accent: #3f7111;
    --accent-fill: #86bb21;
    --shadow: 0 28px 80px rgb(37 66 43 / 16%);
  }
  .site-header { background: rgb(242 246 238 / 88%); }
  .orbit-brand, .orbit-node { background: rgb(233 240 230 / 94%); }
  .button-secondary { background: #e9f0e6; }
}

@media (max-width: 820px) {
  :root { --shell: min(100% - 32px, 680px); }
  .site-nav { grid-template-columns: 1fr auto; min-height: 64px; gap: 12px; }
  .nav-links { display: none; }
  .hero { grid-template-columns: 1fr; gap: 58px; min-height: auto; padding-block: 64px 76px; }
  .hero h1 { font-size: clamp(39px, 10.5vw, 54px); }
  .analysis-orbit { width: min(520px, 100%); justify-self: center; }
  .product-map-grid { grid-template-columns: 1fr 1fr; }
  .product-map article:nth-child(2) { border-right: 0; }
  .product-map article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .model-library, .capability, .system-section, .journey, .principles { padding-block: 92px; }
  .model-library-grid { grid-template-columns: 1fr 1fr; grid-template-areas: "feature feature" "bivariate negative" "elo market"; margin-top: 48px; }
  .model-card-featured { min-height: 460px; }
  .capability-grid { grid-template-columns: 1fr; margin-top: 48px; }
  .capability-grid .capability-primary { grid-row: auto; min-height: 390px; }
  .system-board { grid-template-columns: 1fr; grid-template-areas: "data" "model" "context" "review"; margin-top: 48px; }
  .system-data { min-height: 430px !important; }
  .journey { grid-template-columns: 1fr; gap: 44px; }
  .model-faq { grid-template-columns: 1fr; gap: 44px; padding-block: 20px 92px; }
  .principles { grid-template-columns: 1fr; gap: 38px; }
  .download-section { grid-template-columns: 1fr; gap: 40px; padding: 42px 28px; }
  .download-logo { width: 210px; justify-self: end; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; }
  .model-index-hero, .model-detail-hero, .model-method { grid-template-columns: 1fr; gap: 44px; min-height: auto; padding-block: 64px 78px; }
  .model-index-hero img { order: -1; }
  .model-directory { grid-template-columns: 1fr; padding-bottom: 88px; }
  .model-directory-card-featured { grid-row: auto; min-height: 360px; }
  .model-index-method, .model-download { grid-template-columns: 1fr; align-items: start; padding: 38px 28px; }
  .model-index-method .button, .model-download .button { justify-self: start; }
  .model-spec-grid, .model-output-grid { grid-template-columns: 1fr; }
  .model-spec-grid article:first-child, .model-output-grid article:last-child { grid-row: auto; }
  .model-method img { min-height: 0; }
  .representative-models > header,.review-methodology { grid-template-columns:1fr; gap:30px; }
  .representative-strip { grid-template-columns:1fr 1fr; }
  .representative-strip .model-directory-card { border-bottom:1px solid var(--line); }
  .catalog-list { grid-template-columns:1fr 1fr; }
  .catalog-item:nth-child(3n+2),.catalog-item:nth-child(3n+3) { padding-left:0; border-left:0; }
  .catalog-item:nth-child(even) { padding-left:24px; border-left:1px solid var(--line); }
  .reviews-hero { grid-template-columns:1fr; gap:44px; min-height:auto; padding-block:64px 78px; }
  .reviews-principles { grid-template-columns:1fr; }.reviews-principles article { min-height:0; border-right:0; border-bottom:1px solid var(--line); }.reviews-principles article:last-child { border-bottom:0; }
  .reviews-grid { grid-template-columns:1fr; }
}

@media (max-width: 480px) {
  .site-nav > .button { min-height: 40px; padding-inline: 13px; }
  .brand span { font-size: 16px; }
  .brand img { width: 38px; height: 38px; }
  .hero-actions, .download-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .button, .download-actions .button { width: 100%; }
  .product-map article { padding: 18px 14px; }
  .product-map span { font-size: 10px; }
  .orbit-node { padding: 7px 9px; font-size: 9px; }
  .node-fixture { left: 12%; }.node-data { right: 1%; }.node-review { left: 1%; }
  .capability-grid article { padding: 24px; }
  .model-library-grid { grid-template-columns: 1fr; grid-template-areas: "feature" "bivariate" "negative" "elo" "market"; }
  .model-card, .model-card-featured { min-height: 280px; padding: 24px; }
  .model-card-featured { min-height: 430px; }
  .poisson-curve { height: 150px; }
  .signal-field { height: 150px; }
  .system-board article { padding: 24px; }
  .data-radar { width: 72%; }
  .review-route { gap: 6px; }
  .download-section { margin-bottom: 64px; }
  .download-logo { width: 170px; }
  .footer-meta { align-items: flex-start; flex-direction: column; gap: 8px; }
  .footer-row { align-items: flex-start; flex-direction: column; }
  .model-index-hero h1, .model-detail-hero h1 { font-size: clamp(40px,12vw,53px); }
  .model-index-hero img { min-height: 240px; }
  .model-directory-card { min-height: 0; padding: 26px; }
  .model-detail-actions { align-items: stretch; flex-direction: column; }
  .model-detail-actions .button { width: 100%; }
  .formula-panel { padding: 28px; }
  .related-models > div { grid-template-columns: 1fr; }
  .representative-strip,.catalog-list { grid-template-columns:1fr; }
  .representative-strip .model-directory-card,.catalog-item,.catalog-item:nth-child(even) { padding:24px 0; border-left:0; border-right:0; }
  .reviews-feed > header { align-items:flex-start; flex-direction:column; }
  .review-card { min-height:0; padding:24px; }
  .review-card dl { grid-template-columns:1fr; }
  .review-card dl div { border-bottom:1px solid var(--line); }.review-card dl div:last-child { border-bottom:0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
  .button, .reveal.is-visible { transition: none; }
  .orbit-node { animation: none; }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header, .orbit-brand { background: var(--surface); backdrop-filter: none; -webkit-backdrop-filter: none; }
}