:root {
  --paper: oklch(98.5% 0.003 240);
  --paper-soft: oklch(96.8% 0.005 240);
  --paper-card: oklch(99.5% 0.002 240);
  --ink: oklch(20% 0.012 245);
  --ink-dim: oklch(42% 0.01 245);
  --ink-mute: oklch(60% 0.008 245);
  --rule: oklch(78% 0.008 240);
  --rule-soft: oklch(88% 0.005 240);

  --fitc: #3f7a4f;
  --fitc-soft: rgba(63, 122, 79, 0.12);
  --mch: #b54571;
  --mch-soft: rgba(181, 69, 113, 0.12);
  --ochre: #8a6f2a;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;

  --space-section: clamp(4rem, 3rem + 5vw, 7rem);
  --space-block: clamp(2rem, 1.5rem + 1.5vw, 3.25rem);

  --text-base: clamp(1rem, 0.95rem + 0.18vw, 1.0625rem);
  --text-hero: clamp(2.25rem, 1.4rem + 3.4vw, 4.25rem);
  --text-h2: clamp(1.75rem, 1.35rem + 1.4vw, 2.5rem);
  --text-h3: clamp(1.05rem, 0.98rem + 0.3vw, 1.2rem);

  --sans: 'Inter', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}


a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, h4 {
  font-family: var(--sans);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.1;
  margin: 0;
  color: var(--ink);
  font-feature-settings: 'ss01', 'cv11';
}

h1 {
  letter-spacing: -0.03em;
  font-weight: 700;
}

p {
  margin: 0 0 1em;
  color: var(--ink-dim);
  max-width: 64ch;
}

code, pre {
  font-family: var(--mono);
  font-size: 0.86em;
}

code {
  padding: 0.08em 0.32em;
  background: rgba(28, 26, 23, 0.045);
  border-radius: 3px;
  color: var(--ink);
}

hr.rule {
  border: 0;
  border-top: 1px solid var(--rule-soft);
  margin: 0;
  max-width: 1240px;
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem clamp(1.25rem, 4vw, 3rem);
  border-bottom: 1px solid var(--rule);
  background: var(--paper-soft);
  box-shadow: 0 1px 0 0 var(--rule-soft), 0 6px 16px -10px rgba(28, 26, 23, 0.08);
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--sans);
  line-height: 1;
}

.brand-logo {
  height: 22px;
  width: auto;
  display: block;
}

.brand-sep {
  color: var(--rule);
  font-weight: 400;
  font-size: 1.1rem;
  margin: 0 0.1rem;
}

.brand-product {
  font-family: var(--sans);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.018em;
  color: var(--ink);
}

.site-header nav {
  display: flex;
  gap: 1.85rem;
  align-items: center;
  font-size: 0.92rem;
}

.site-header nav a {
  color: var(--ink-dim);
  transition: color 180ms ease;
}

.site-header nav a:hover {
  color: var(--ink);
}

.nav-cta {
  border: 1px solid var(--ink);
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  color: var(--ink) !important;
  background: transparent;
  transition: background 180ms ease, color 180ms ease;
}

.nav-cta:hover {
  background: var(--ink);
  color: var(--paper) !important;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(2rem, 4vw, 5rem);
  align-items: start;
  padding: clamp(3rem, 4vw, 5rem) clamp(1.25rem, 4vw, 3rem) var(--space-section);
  max-width: 1240px;
  margin: 0 auto;
  position: relative;
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  margin: 0 0 2rem;
  text-transform: none;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--fitc);
  box-shadow: 0 0 0 3px rgba(63, 122, 79, 0.12);
}

h1 {
  font-size: var(--text-hero);
  margin-bottom: 1.5rem;
  max-width: 18ch;
  text-wrap: balance;
}

.lede {
  font-size: clamp(1.05rem, 1rem + 0.35vw, 1.2rem);
  color: var(--ink-dim);
  max-width: 46ch;
  line-height: 1.55;
  margin-bottom: 2.25rem;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border-radius: 6px;
  font-size: 0.94rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
  font-family: inherit;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}

.btn-primary:hover {
  background: var(--fitc);
}

.btn-ghost {
  border-color: var(--ink);
  color: var(--ink);
  background: transparent;
}

.btn-ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

.btn-block {
  width: 100%;
  padding: 0.9rem 1.25rem;
}

.facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem 2rem;
  margin: 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule-soft);
}

.facts > div {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.facts dt {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.facts dd {
  margin: 0;
  font-size: 0.98rem;
  color: var(--ink);
  font-weight: 500;
}

.hero-visual {
  margin: 0;
}

.figure-frame {
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.25rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.figure-caption {
  font-family: var(--sans);
  font-size: 0.88rem;
  color: var(--ink-dim);
  line-height: 1.5;
  margin: 0;
}

.figure-id {
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--ink);
  margin-right: 0.45rem;
}

#scatter {
  width: 100%;
  height: auto;
  display: block;
  background: var(--paper);
  border-radius: 4px;
}

.figure-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--ink-dim);
  padding-top: 0.75rem;
  border-top: 1px solid var(--rule-soft);
}

.figure-legend i {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  margin-right: 0.45rem;
  vertical-align: middle;
}

.pipeline-section,
.classification,
.capabilities,
.counts,
.beta {
  padding: var(--space-section) clamp(1.25rem, 4vw, 3rem);
  max-width: 1240px;
  margin: 0 auto;
}

.section-head {
  max-width: 720px;
  margin: 0 0 var(--space-block);
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.section-mark {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  margin: 0 0 0.9rem;
}

h2 {
  font-size: var(--text-h2);
  text-wrap: balance;
}

.section-intro {
  margin-top: 1rem;
  color: var(--ink-dim);
  max-width: 60ch;
}

.pipeline {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule-soft);
  border-left: 1px solid var(--rule-soft);
}

@media (max-width: 880px) {
  .pipeline {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .pipeline {
    grid-template-columns: 1fr;
  }
}

.pipeline li {
  position: relative;
  padding: 1.6rem 1.5rem 1.5rem;
  border-right: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
  background: var(--paper);
  transition: background 200ms ease;
}

.pipeline li:hover {
  background: var(--paper-soft);
}

.step-num {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 0.5rem;
}

.pipeline h3 {
  font-size: var(--text-h3);
  margin-bottom: 0.55rem;
  letter-spacing: -0.01em;
}

.pipeline p {
  font-size: 0.92rem;
  color: var(--ink-dim);
  margin: 0 0 1rem;
}

.params {
  margin: 0;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--rule-soft);
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.25rem 0.85rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--ink-dim);
}

.params dt {
  color: var(--ink-mute);
}

.params dd {
  margin: 0;
  color: var(--ink);
}

.methods-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

@media (max-width: 720px) {
  .methods-grid {
    grid-template-columns: 1fr;
  }
}

.method {
  background: var(--paper-card);
  border: 1px solid var(--rule-soft);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.6rem 1.35rem;
  display: flex;
  flex-direction: column;
}

.method-head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-bottom: 0.4rem;
}

.method-head h3 {
  font-size: 1.15rem;
  margin: 0;
  letter-spacing: -0.014em;
}

.method-link {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: border-color 180ms ease, color 180ms ease;
}

.method-link:hover {
  color: var(--fitc);
  border-color: var(--fitc);
}

.inline-link {
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  transition: border-color 180ms ease, color 180ms ease;
}

.inline-link:hover {
  color: var(--fitc);
  border-color: var(--fitc);
}

.method-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  padding: 0.18rem 0.5rem;
  border: 1px solid var(--rule-soft);
  border-radius: 999px;
  background: var(--paper);
}

.method-tag-fuzue {
  color: var(--fitc);
  border-color: rgba(63, 122, 79, 0.4);
  background: var(--fitc-soft);
}

.method-type {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-mute);
  margin: 0 0 0.85rem;
}

.method > p:not(.method-type) {
  font-size: 0.93rem;
  color: var(--ink-dim);
  margin: 0 0 1rem;
  flex: 1;
}

.method .params {
  margin: 0;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--rule-soft);
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.25rem 0.85rem;
  font-family: var(--mono);
  font-size: 0.76rem;
}

.method .params dt {
  color: var(--ink-mute);
}

.method .params dd {
  margin: 0;
  color: var(--ink);
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (max-width: 720px) {
  .cap-grid {
    grid-template-columns: 1fr;
  }
}

.cap {
  background: var(--paper-card);
  border: 1px solid var(--rule-soft);
  border-radius: var(--radius-md);
  padding: 1.65rem 1.65rem 1.5rem;
}

.cap h3 {
  font-size: 1.25rem;
  margin-bottom: 0.65rem;
  letter-spacing: -0.012em;
}

.cap p {
  font-size: 0.95rem;
  margin: 0;
}

.cap-code {
  margin: 1.1rem 0 0;
  padding: 0.9rem 1rem;
  background: var(--paper-soft);
  border: 1px solid var(--rule-soft);
  border-radius: 5px;
  font-size: 0.82rem;
  color: var(--ink-dim);
  overflow-x: auto;
  line-height: 1.5;
}

.counts-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 880px) {
  .counts-grid {
    grid-template-columns: 1fr;
  }
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.86rem;
}

.data-table thead th {
  text-align: left;
  padding: 0.55rem 0.8rem 0.55rem 0;
  border-bottom: 2px solid var(--ink);
  font-family: var(--sans);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
}

.data-table tbody td {
  padding: 0.55rem 0.8rem 0.55rem 0;
  border-bottom: 1px solid var(--rule-soft);
  color: var(--ink-dim);
}

.data-table tbody td:first-child {
  color: var(--ink);
  font-family: var(--sans);
}

.data-table tbody td:not(:first-child) {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.row-popA td:first-child {
  color: var(--fitc);
}

.row-popB td:first-child {
  color: var(--mch);
}

.outputs-list h3 {
  font-size: 1.1rem;
  margin-bottom: 0.85rem;
  letter-spacing: -0.012em;
}

.outputs-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.55rem;
  font-size: 0.94rem;
  color: var(--ink-dim);
}

.outputs-list li {
  padding-left: 1.4rem;
  position: relative;
}

.outputs-list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--ink-mute);
  font-family: var(--mono);
}

.beta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  padding: clamp(2rem, 4vw, 3.5rem);
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
}

@media (max-width: 880px) {
  .beta-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.beta h2 {
  font-size: clamp(1.6rem, 1.3rem + 1vw, 2.25rem);
  margin: 0.4rem 0 1rem;
}

.beta-points {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.5rem;
  color: var(--ink-dim);
}

.beta-points li {
  padding-left: 1.4rem;
  position: relative;
}

.beta-points li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--ink-mute);
  font-family: var(--mono);
}

.beta-form {
  display: grid;
  gap: 0.95rem;
}

.field {
  display: grid;
  gap: 0.3rem;
}

.field label {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.field input,
.field textarea {
  width: 100%;
  background: var(--paper);
  border: 1px solid var(--rule);
  color: var(--ink);
  padding: 0.7rem 0.85rem;
  border-radius: 5px;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 180ms ease, background 180ms ease;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--ink-mute);
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--ink);
  background: var(--paper-card);
}

.field textarea {
  resize: vertical;
  min-height: 70px;
}

.beta-note {
  font-size: 0.88rem;
  margin: 0.25rem 0 0;
  padding: 0.6rem 0.85rem;
  border-radius: 5px;
}

.beta-note.success {
  background: var(--fitc-soft);
  color: var(--fitc);
  border: 1px solid rgba(63, 122, 79, 0.3);
}

.beta-note.error {
  background: var(--mch-soft);
  color: var(--mch);
  border: 1px solid rgba(181, 69, 113, 0.3);
}

.site-footer {
  border-top: 1px solid var(--rule-soft);
  padding: 3rem clamp(1.25rem, 4vw, 3rem) 2.5rem;
  background: var(--paper-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
  max-width: 1240px;
  margin: 0 auto;
}

@media (max-width: 720px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.footer-grid h4 {
  font-family: var(--sans);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.9rem;
}

.footer-grid nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.92rem;
}

.footer-grid nav a {
  color: var(--ink-dim);
  transition: color 180ms ease;
}

.footer-grid nav a:hover {
  color: var(--ink);
}

.footer-tag {
  font-size: 0.9rem;
  color: var(--ink-mute);
  margin-top: 0.8rem;
}

.status-line {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  color: var(--ink-dim);
  margin: 0 0 0.8rem;
}

.footer-fine {
  font-size: 0.78rem;
  color: var(--ink-mute);
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}