@font-face {
  font-family: Geist;
  src: url("/releases/eee019d4f4271b6285e6/assets/platform/geist.woff2?v=1") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
:root {
  --canvas: var(--sil-canvas);
  --surface: var(--sil-surface);
  --ink: var(--sil-ink);
  --muted: var(--sil-muted);
  --line: var(--sil-line);
  --wash: var(--sil-wash);
  --blue: var(--sil-accent);
  --green: var(--sil-research-green);
  --focus: var(--sil-focus);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: light;
}
html[data-theme="dark"] {
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  html[data-theme="auto"] {
    color-scheme: dark;
  }
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
  -webkit-text-size-adjust: 100%;
  scrollbar-color: var(--sil-line-strong) var(--canvas);
}
body {
  margin: 0;
  padding-inline: env(safe-area-inset-left) env(safe-area-inset-right);
  background: var(--canvas);
  color: var(--ink);
  font-family:
    Geist,
    -apple-system,
    BlinkMacSystemFont,
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1,
h2,
h3,
p,
figure {
  margin: 0;
}
h1,
h2,
h3 {
  text-wrap: balance;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  cursor: pointer;
  color: inherit;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
a,
button {
  touch-action: manipulation;
}
button:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}
::selection {
  background: var(--wash);
  color: var(--ink);
}
[hidden] {
  display: none !important;
}
.icon {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.65;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.icon-library {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}
.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 100;
  transform: translateY(-180%);
  background: var(--surface);
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.skip-link:focus {
  transform: none;
}
.platform-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.65fr);
  gap: 24px 64px;
  padding-block: 52px 60px;
  border-top: 1px solid var(--line);
}
.platform-contact h2 {
  font-size: 28px;
  font-weight: 550;
  line-height: 1.3;
}
.platform-contact-body {
  min-width: 0;
  max-width: 72ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}
.platform-contact-email {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  max-width: 100%;
  min-height: 44px;
  margin-block: 18px 24px;
  color: var(--blue);
  font-size: 20px;
  font-weight: 550;
  line-height: 1.5;
  text-underline-offset: 5px;
}
.platform-contact-email span {
  min-width: 0;
  overflow-wrap: anywhere;
}
.platform-contact-email:hover,
.platform-contact-email:focus-visible {
  text-decoration: underline;
}
.platform-contact-note {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.7;
}
.platform-main,
.platform-footer {
  width: min(100% - 80px, 1200px);
  margin-inline: auto;
}
.platform-intro {
  display: grid;
  justify-items: center;
  gap: 24px;
  padding: clamp(40px, 4.8vw, 64px) 0 44px;
  text-align: center;
}
.platform-intro h1 {
  max-inline-size: 100%;
  font-size: clamp(38px, 4vw, 52px);
  line-height: 1.18;
  font-weight: 550;
  letter-spacing: -0.04em;
  text-wrap: balance;
}
.platform-intro h1 span {
  display: block;
}
.platform-intro h1 span + span {
  margin-top: 8px;
  color: var(--blue);
}
.intro-copy {
  display: grid;
  gap: 8px;
  max-inline-size: min(100%, 70ch);
}
.intro-copy p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
  text-wrap: balance;
}
.intro-copy p:first-child {
  color: var(--ink);
  font-size: 17px;
  line-height: 1.5;
  font-weight: 520;
}
.research-entrances {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: auto auto auto auto auto;
  row-gap: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  overflow: hidden;
}
.line-entry {
  min-width: 0;
  padding: 34px 36px 28px;
  display: grid;
  grid-row: span 5;
  grid-template-rows: subgrid;
  align-content: start;
}
.line-entry + .line-entry {
  border-left: 1px solid var(--line);
}
.quant-entry { background: var(--sil-quant-field); }
@supports not (grid-template-rows: subgrid) {
  .line-entry { grid-row: auto; grid-template-rows: auto auto 1fr auto auto; row-gap: 18px; }
  .research-entrances { grid-template-rows: auto; row-gap: 0; }
}
.alta-entry { background: var(--sil-alta-field); }
.alta-entry .entry-heading { color: var(--blue); }
.entry-heading {
  display: flex;
  align-items: center;
  flex-direction: row;
  gap: 6px;
  margin-bottom: 0;
  padding-bottom: 6px;
  min-height: 36px;
}
.entry-heading h2 {
  font-weight: 550;
  font-size: 28px;
  letter-spacing: -0.03em;
  line-height: 1.25;
}
.entry-heading .alta-wordmark {
  display: block;
  width: 112px;
  height: 35px;
  max-width: 100%;
}
.line-type {
  font-size: 13px;
  color: var(--muted);
}
.entry-thesis {
  font-size: 18px;
  line-height: 1.55;
  font-weight: 520;
  max-width: 38ch;
}
.entry-description {
  margin-top: 0;
  font-size: 14px;
  color: var(--muted);
  max-width: 62ch;
}
.entry-footer {
  margin-top: 0;
  padding-top: 4px;
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 14px;
}
.entry-footer .button {
  justify-content: space-between;
  min-width: min(100%, 216px);
}
.entry-footer .button .icon {
  transition: transform 180ms var(--ease);
}
@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .entry-footer .button:hover .icon {
    transform: translateX(3px);
  }
}
.entry-note {
  font-size: 12px;
  color: var(--muted);
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 46px;
  padding: 11px 17px;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 550;
  line-height: 1.4;
  transition:
    background 180ms,
    color 180ms;
}
.quant-button,
.alta-button {
  border: 1px solid transparent;
}
.quant-button {
  background: var(--sil-action-navy);
  color: var(--sil-on-navy);
}
.quant-button:hover {
  background: var(--sil-accent);
  color: var(--sil-on-accent);
}
.alta-button,
.primary {
  background: var(--sil-accent);
  color: var(--sil-on-accent);
}
.alta-button:hover,
.primary:hover {
  background: var(--sil-accent-hover);
}
.shared-principle {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  padding: 22px 0 0;
}
.research-section,
.quant-section {
  margin-top: 64px;
}
.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 42px;
  margin-bottom: 28px;
}
.section-heading h2,
.alta-introduction h2,
.platform-principles h2 {
  font-size: clamp(27px, 2.6vw, 32px);
  font-weight: 540;
  line-height: 1.3;
  letter-spacing: -0.035em;
}
.section-heading > p {
  color: var(--muted);
  max-width: 46ch;
  font-size: 14px;
}
.research-lab {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  overflow: hidden;
}
.lab-top {
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}
.path-selector {
  display: flex;
  background: var(--canvas);
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 10px;
  gap: 4px;
}
.path-selector button {
  min-height: 44px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  font-size: 14px;
  padding: 8px 20px;
  color: var(--muted);
}
.path-selector button[aria-pressed="true"] {
  background: var(--sil-action-navy);
  color: var(--sil-on-navy);
}
.research-lab[data-path="alta"] .path-selector button[aria-pressed="true"] {
  background: var(--sil-accent);
  color: var(--sil-on-accent);
}
.demo-label {
  font-size: 12px;
  color: var(--muted);
}
.stage-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 28px 32px 22px;
  gap: 16px;
}
.stage-list button {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 0;
  border-bottom: 2px solid var(--line);
  background: none;
  text-align: left;
  padding: 8px 0 14px;
  min-height: 48px;
  color: var(--muted);
}
.stage-list button[aria-selected="true"] {
  border-color: var(--green);
  color: var(--green);
}
.research-lab[data-path="alta"] .stage-list button[aria-selected="true"] {
  color: var(--blue);
  border-color: var(--blue);
}
.stage-number {
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  border: 1px solid var(--line);
  border-radius: 50%;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.stage-list button[aria-selected="true"] .stage-number {
  background: var(--wash);
  border-color: transparent;
}
.stage-label {
  font-weight: 550;
  font-size: 14px;
}
.stage-detail {
  padding: 14px 32px 30px;
  min-height: 216px;
  display: grid;
  grid-template-columns: 1.12fr 1fr;
  gap: 18px 56px;
  align-items: center;
}
.stage-copy h3 {
  font-size: 23px;
  font-weight: 550;
  letter-spacing: -0.02em;
  line-height: 1.45;
  margin-bottom: 12px;
}
.stage-copy p {
  color: var(--muted);
  font-size: 14px;
  max-width: 66ch;
}
.stage-evidence {
  display: grid;
  grid-template-columns: 1fr 20px 1fr;
  gap: 22px;
  align-items: center;
  padding: 24px;
  background: var(--sil-quant-field);
  border-radius: 10px;
}
.research-lab[data-path="alta"] .stage-evidence { background: var(--sil-alta-field); }
.stage-evidence > div > span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}
.stage-evidence strong {
  font-size: 14px;
  font-weight: 550;
}
.stage-evidence > .icon {
  color: var(--muted);
}
.stage-guardrail {
  grid-column: 1/-1;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.lab-bottom {
  border-top: 1px solid var(--line);
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 13px;
}
.lab-bottom > span {
  color: var(--muted);
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  font-size: 14px;
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-underline-offset: 5px;
}
.text-link:hover {
  text-decoration-color: currentColor;
  color: var(--blue);
}
.stage-detail.is-changing {
  animation: evidence-handoff 260ms var(--ease);
}
@keyframes evidence-handoff {
  from {
    opacity: 0.55;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.strategy-directory {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 42px;
  border-top: 1px solid var(--line);
}
.strategy-directory > a {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 106px;
  padding: 22px 8px;
  border-bottom: 1px solid var(--line);
  transition: background 160ms;
}
.strategy-directory > a:hover {
  background: var(--wash);
}
.strategy-directory > a > strong {
  font-size: 15px;
  font-weight: 600;
  width: 62px;
  flex-shrink: 0;
  letter-spacing: 0.015em;
}
.strategy-directory h3 {
  font-size: 17px;
  font-weight: 540;
  line-height: 1.45;
}
.strategy-directory p {
  font-size: 13px;
  color: var(--muted);
  margin-top: 5px;
}
.strategy-directory > a > .icon {
  margin-left: auto;
  color: var(--muted);
}
.section-note {
  font-size: 12px;
  color: var(--muted);
  margin-top: 18px;
  line-height: 1.75;
}
.alta-section {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 64px;
  align-items: center;
  margin-top: 64px;
  padding-block: 48px;
  border-block: 1px solid var(--line);
}
.alta-introduction > p:not(.section-note) {
  color: var(--muted);
  margin-top: 22px;
  font-size: 15px;
  max-width: 62ch;
}
.alta-points {
  list-style: none;
  padding: 0;
  margin: 24px 0;
}
.alta-points li {
  font-size: 13px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}
.alta-introduction .button {
  margin-top: 6px;
}
.platform-principles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  padding: 60px 0 66px;
}
.platform-principles p {
  font-size: 14px;
  max-width: 66ch;
  color: var(--muted);
}
.platform-principles .text-link {
  margin-top: 14px;
}
.platform-footer {
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  padding: 24px 0 36px;
  font-size: 12px;
  color: var(--muted);
}
.platform-footer p {
  flex: 1 1 260px;
  margin: 0;
  line-height: 1.7;
}
.platform-footer a {
  display: flex;
  align-items: center;
  min-height: 44px;
}
.notice {
  padding: 16px;
  font-size: 14px;
  background: var(--wash);
}
@media (min-width: 1600px) {
  .line-entry {
    padding: 36px;
  }
  .entry-thesis {
    font-size: 20px;
  }
}
@media (max-width: 1050px) {
  .platform-main,
  .platform-footer {
    width: calc(100% - 48px);
  }
  .line-entry {
    padding: 26px;
  }
  .entry-footer {
    gap: 14px;
  }
  .entry-note {
    width: 100%;
  }
  .section-heading {
    gap: 28px;
  }
  .stage-detail {
    gap: 20px 28px;
  }
  .stage-evidence {
    gap: 14px;
    padding: 18px;
  }
  .alta-section {
    gap: 32px;
    grid-template-columns: 1fr 1fr;
  }
  .platform-principles {
    gap: 40px;
  }
}
@media (max-width: 760px) {
  html {
    scroll-padding-top: 132px;
  }
  .platform-main,
  .platform-footer {
    width: calc(100% - 36px);
  }
  .platform-intro {
    gap: 24px;
    padding: 36px 0 32px;
  }
  .platform-intro h1 {
    font-size: clamp(28px, 6.2vw, 42px);
    line-height: 1.24;
  }
  .intro-copy {
    text-align: start;
  }
  .intro-copy p:first-child {
    font-size: 16px;
  }
  .intro-copy p {
    font-size: 14px;
    text-wrap: pretty;
  }
  .research-entrances {
    grid-template-columns: 1fr;
  }
  .line-entry + .line-entry {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .line-entry {
    padding: 24px;
  }
  .entry-heading {
    margin-bottom: 14px;
  }
  .entry-heading h2 {
    font-size: 25px;
  }
  .entry-footer {
    padding-top: 22px;
  }
  .entry-note {
    width: auto;
  }
  .shared-principle {
    text-align: left;
    padding-top: 20px;
    font-size: 12px;
  }
  .research-section,
  .quant-section {
    margin-top: 52px;
  }
  .section-heading {
    display: block;
    margin-bottom: 22px;
  }
  .section-heading > p {
    margin-top: 14px;
    max-width: 60ch;
  }
  .section-heading h2,
  .alta-introduction h2,
  .platform-principles h2 {
    font-size: 28px;
  }
  .lab-top {
    padding: 18px;
    flex-wrap: wrap;
    gap: 12px;
  }
  .demo-label {
    font-size: 11px;
  }
  .stage-list {
    padding: 20px 18px 12px;
    gap: 10px;
  }
  .stage-list button {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .stage-label {
    font-size: 12px;
  }
  .stage-detail {
    grid-template-columns: 1fr;
    padding: 14px 20px 20px;
    min-height: 350px;
    gap: 20px;
  }
  .stage-copy h3 {
    font-size: 21px;
  }
  .stage-copy p {
    font-size: 14px;
  }
  .stage-evidence {
    padding: 18px;
    gap: 16px;
  }
  .stage-evidence strong {
    font-size: 13px;
  }
  .stage-guardrail {
    font-size: 12px;
  }
  .lab-bottom {
    padding: 14px 20px;
    gap: 6px;
    flex-wrap: wrap;
    font-size: 12px;
  }
  .lab-bottom .text-link {
    font-size: 13px;
  }
  .strategy-directory {
    grid-template-columns: 1fr;
  }
  .strategy-directory > a {
    padding: 19px 2px;
    min-height: 94px;
    gap: 16px;
  }
  .strategy-directory h3 {
    font-size: 16px;
  }
  .strategy-directory p {
    font-size: 12px;
  }
  .strategy-directory > a > strong {
    font-size: 14px;
    width: 54px;
  }
  .alta-section {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 52px;
    padding-block: 36px;
  }
  .alta-introduction > p:not(.section-note) {
    font-size: 14px;
    margin-top: 16px;
  }
  .alta-points {
    margin: 18px 0;
  }
  .platform-principles {
    grid-template-columns: 1fr;
    padding: 38px 0;
    gap: 18px;
  }
  .platform-contact {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    padding-block: 36px 40px;
  }
  .platform-contact h2 {
    font-size: 24px;
  }
  .platform-contact-body {
    font-size: 14px;
  }
  .platform-contact-email {
    gap: 10px;
    margin-block: 16px 20px;
    font-size: 18px;
  }
  .platform-footer {
    flex-wrap: wrap;
    gap: 8px 24px;
    padding-bottom: 24px;
  }
  .platform-footer p {
    flex-basis: 100%;
    margin: 0;
    font-size: 12px;
  }
  .preview-status {
    font-size: 11px;
  }
  .preview-fallback {
    font-size: 11px;
  }
  .path-selector button {
    min-height: 44px;
    padding: 8px 16px;
  }
}
@media (max-width: 360px) {
  .line-entry {
    padding: 22px;
  }
  .entry-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .stage-list {
    gap: 8px;
    padding-inline: 14px;
  }
  .stage-detail {
    padding-inline: 18px;
  }
  .entry-heading {
    gap: 10px;
  }
  .line-type {
    font-size: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}
@media (forced-colors: active) {
  .line-entry,
  .research-lab,
  .path-selector,
  .stage-evidence {
    border: 1px solid CanvasText;
  }
  .stage-list button[aria-selected="true"] {
    border-color: Highlight;
  }
  .button {
    border: 1px solid ButtonText;
  }
  button:focus-visible,
  a:focus-visible,
  [tabindex]:focus-visible {
    outline-color: Highlight;
  }
}