@font-face {
  font-family: "SAI Sans";
  src: url("/assets/fonts/noto-sans-sc-sai.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
}

:root {
  --carbon: #07090a;
  --carbon-soft: #101416;
  --carbon-raised: #181d1e;
  --paper: #efefeb;
  --paper-deep: #c8cdcb;
  --ink: #111516;
  --muted-dark: #8a9594;
  --cyan: #5eb6ac;
  --amber: #c79b55;
  --amber-soft: #ddc18d;
  --graphite: #1a2021;
  --graphite-raised: #202728;
  --graphite-muted: #b7c0be;
  --graphite-accent: #78c4ba;
  --line-dark: rgba(239, 239, 235, 0.16);
  --line-graphite: rgba(239, 239, 235, 0.14);
  --header-height: 72px;
  --shell: min(1480px, calc(100vw - 96px));
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  font-family: "SAI Sans", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--paper);
  background: var(--carbon);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--carbon);
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--paper);
  background: var(--carbon);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: clip;
}

body::selection {
  color: var(--ink);
  background: var(--amber-soft);
}

body.nav-open {
  overflow: hidden;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

img,
canvas {
  display: block;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.08;
  letter-spacing: 0;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 10px 14px;
  color: var(--ink);
  background: var(--amber-soft);
  border-radius: 4px;
  transform: translateY(-160%);
  transition: transform 180ms var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

.scroll-progress {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 120;
  height: 3px;
  pointer-events: none;
  background: transparent;
}

.scroll-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
}

.topology-canvas {
  position: fixed;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity 500ms var(--ease-out);
  contain: strict;
}

body.webgl-ready.topology-active .topology-canvas {
  opacity: 1;
}

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(320px, 1fr) auto;
  align-items: center;
  gap: 24px;
  height: var(--header-height);
  padding: 0 48px;
  color: var(--paper);
  background: var(--carbon);
  border-bottom: 1px solid var(--line-dark);
  transition: height 220ms var(--ease-out), background 220ms var(--ease-out);
}

.site-header.is-condensed {
  height: 62px;
  background: rgba(5, 7, 9, 0.96);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  width: fit-content;
}

.brand-mark {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 42px;
  height: 42px;
  background: var(--paper);
  border-radius: 4px;
  overflow: hidden;
}

.brand-mark img {
  width: 100%;
  height: 100%;
}

.brand-copy {
  display: grid;
  min-width: 0;
  line-height: 1.08;
}

.brand-copy strong {
  font-size: 0.94rem;
  font-weight: 800;
}

.brand-copy small {
  margin-top: 4px;
  color: var(--muted-dark);
  font-size: 0.72rem;
  font-weight: 600;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 0;
  color: var(--paper-deep);
}

.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 9px;
  font-size: 0.88rem;
  font-weight: 650;
  white-space: nowrap;
  transition: color 160ms var(--ease-out), background 160ms var(--ease-out);
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 9px;
  bottom: 7px;
  left: 9px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 180ms var(--ease-out);
}

.site-nav-external {
  gap: 5px;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
  color: var(--paper);
  background: rgba(243, 240, 232, 0.07);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 750;
  line-height: 1.2;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 160ms var(--ease-out), color 160ms var(--ease-out), background 160ms var(--ease-out), border-color 160ms var(--ease-out);
}

.header-cta,
.button-primary {
  color: var(--ink);
  background: var(--amber-soft);
}

.header-cta:hover,
.header-cta:focus-visible,
.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-quiet {
  color: var(--paper);
  background: rgba(5, 7, 9, 0.7);
  border-color: rgba(243, 240, 232, 0.46);
}

.button-quiet:hover,
.button-quiet:focus-visible {
  color: var(--carbon);
  background: var(--paper);
  border-color: var(--paper);
}

.button-large {
  min-height: 58px;
  padding: 0 24px;
  font-size: 1.02rem;
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  color: var(--paper);
  background: transparent;
  border: 1px solid var(--line-dark);
  border-radius: 4px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
  transition: transform 180ms var(--ease-out), opacity 180ms var(--ease-out);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

main,
.site-footer {
  position: relative;
  z-index: 2;
}

section[id] {
  scroll-margin-top: var(--header-height);
}

.hero {
  position: relative;
  min-height: 100svh;
  padding: calc(var(--header-height) + 64px) 48px 64px;
  background: var(--carbon);
  border-bottom: 1px solid var(--line-dark);
  isolation: isolate;
  overflow: clip;
}

.hero::before {
  content: none;
}

.hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 0;
  height: 3px;
  background: var(--amber);
  transform: scaleX(0.18);
  transform-origin: left center;
}

.hero-photo {
  position: absolute;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  left: 45%;
  z-index: -1;
  opacity: 0.82;
  overflow: hidden;
  clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%);
}

.hero-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(7, 9, 10, 0.14);
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 16% 50%;
  filter: saturate(0.76) contrast(1.1) brightness(0.9);
  transform: none;
}

.hero-inner {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: min(760px, 54%);
  min-height: calc(100svh - var(--header-height) - 128px);
}

.hero-signal {
  width: fit-content;
  margin-bottom: 22px;
  color: var(--cyan);
  font-size: 0.8rem;
  font-weight: 700;
}

.hero-signal::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 3px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--cyan);
}

.hero h1 {
  display: grid;
  gap: 4px;
  max-width: 760px;
  margin: 0;
  font-size: 78px;
  font-weight: 800;
  line-height: 0.98;
  text-shadow: 0 4px 24px rgba(5, 7, 9, 0.72);
}

.hero h1 span:first-child {
  color: var(--paper);
}

.hero h1 span:last-child {
  color: var(--amber-soft);
}

.hero-lead {
  max-width: 650px;
  margin: 28px 0 0;
  color: var(--paper-deep);
  font-size: 1.08rem;
  line-height: 1.8;
  text-shadow: 0 2px 12px var(--carbon);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-billing {
  margin: 18px 0 0;
  color: var(--muted-dark);
  font-size: 0.9rem;
}

.hero-next {
  position: absolute;
  bottom: 22px;
  left: 48px;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  color: var(--paper-deep);
  font-size: 0.82rem;
  font-weight: 700;
}

.hero-next span:last-child {
  color: var(--cyan);
  font-size: 1.1rem;
}

.section-shell {
  width: var(--shell);
  margin: 0 auto;
}

.why-sai {
  position: relative;
  z-index: 4;
  color: var(--paper);
  background: var(--graphite);
  border-bottom: 1px solid var(--line-graphite);
}

.why-sai-heading {
  padding: 112px 0 72px;
}

.why-sai-heading h2 {
  max-width: 1120px;
  margin-bottom: 24px;
  color: #d6dbd8;
  font-size: 52px;
  font-weight: 800;
}

.why-sai-title-line,
.why-sai-intro-line {
  display: block;
}

.why-sai-title-line + .why-sai-title-line {
  margin-top: 0.04em;
}

.why-sai-intro-line + .why-sai-intro-line {
  margin-top: 0.1em;
}

.why-sai-phrase {
  display: inline-block;
  max-width: 100%;
  white-space: nowrap;
}

.why-sai-agent-phrase {
  margin-right: 0.22em;
}

.why-sai-heading p {
  max-width: 920px;
  margin-bottom: 0;
  color: var(--graphite-muted);
  font-size: 1.04rem;
  line-height: 1.85;
}

.why-sai-note {
  display: block;
  max-width: 920px;
  margin-top: 14px;
  color: rgba(183, 192, 190, 0.72);
  font-size: 0.76rem;
  font-weight: 400;
}

.why-sai-rows {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line-graphite);
}

html[data-motion="full"] body.js-ready .why-sai-rows:not(.is-revealed) [data-why-row] {
  opacity: 0;
  transform: translateY(18px);
  will-change: opacity, transform;
}

.why-sai-rows article {
  min-width: 0;
  min-height: 320px;
  padding: 42px max(32px, calc((100vw - 1480px) / 6));
  color: var(--paper);
  border-right: 1px solid var(--line-graphite);
  overflow-wrap: anywhere;
  transition: color 220ms var(--ease-out), background 220ms var(--ease-out);
}

.why-sai-rows article:last-child {
  border-right: 0;
}

.why-sai-rows article:hover {
  background: var(--graphite-raised);
}

.why-sai-rows article:nth-child(2):hover {
  background: #242724;
}

.why-sai-rows article:nth-child(3):hover {
  background: #1f2828;
}

.why-sai-pillar {
  max-width: 100%;
  margin: 0 0 46px;
  color: var(--graphite-accent);
  font-size: clamp(2rem, 2.5vw, 2.45rem);
  font-weight: 800;
  line-height: 1.12;
}

.why-sai-claim {
  max-width: 420px;
  margin: 0 0 18px;
  color: #d6dbd8;
  font-size: clamp(1.35rem, 1.55vw, 1.7rem);
  font-weight: 800;
  line-height: 1.28;
}

.why-sai-rows span {
  display: block;
  max-width: 460px;
  color: var(--graphite-muted);
}

.ultrapod {
  position: relative;
  z-index: 3;
  min-height: 245svh;
  color: var(--paper);
  background: transparent;
  border-bottom: 1px solid var(--line-dark);
}

.ultrapod-sticky {
  position: sticky;
  top: 0;
  display: grid;
  align-items: center;
  min-height: 100svh;
  padding: calc(var(--header-height) + 40px) 0 48px;
  overflow: clip;
  isolation: isolate;
}

.ultrapod-sticky::before {
  content: "";
  position: absolute;
  inset: 0 52% 0 0;
  z-index: 2;
  background: linear-gradient(
    90deg,
    rgba(7, 9, 10, 0.98) 0%,
    rgba(7, 9, 10, 0.94) 52%,
    rgba(7, 9, 10, 0.72) 68%,
    rgba(7, 9, 10, 0.28) 85%,
    rgba(7, 9, 10, 0) 100%
  );
  pointer-events: none;
}

.ultrapod-copy {
  position: relative;
  z-index: 4;
}

.ultrapod-heading {
  display: grid;
  grid-template-columns: minmax(0, 540px);
}

.ultrapod-name {
  margin-bottom: 14px;
  color: var(--amber-soft);
  font-size: 0.82rem;
  font-weight: 750;
}

.ultrapod-heading h2 {
  margin-bottom: 22px;
  font-size: 50px;
  font-weight: 800;
}

.ultrapod-heading p:last-child {
  max-width: 52ch;
  margin-bottom: 0;
  color: var(--paper-deep);
  line-height: 1.85;
}

.topology-equation {
  display: flex;
  align-items: stretch;
  width: fit-content;
  max-width: 610px;
  margin: 48px 0 0;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.topology-equation span {
  display: grid;
  min-width: 94px;
  padding: 14px 16px 16px;
}

.topology-equation strong {
  color: var(--paper);
  font-size: 1.9rem;
  line-height: 1;
}

.topology-equation small {
  margin-top: 8px;
  color: var(--muted-dark);
  font-size: 0.72rem;
  font-weight: 600;
}

.topology-equation i {
  display: grid;
  place-items: center;
  min-width: 28px;
  color: var(--muted-dark);
  font-style: normal;
  font-weight: 700;
}

.topology-equation .equation-total {
  background: var(--amber-soft);
}

.topology-equation .equation-total strong,
.topology-equation .equation-total small {
  color: var(--ink);
}

.topology-stage-copy {
  position: relative;
  min-height: 84px;
  max-width: 540px;
  margin: 30px 0 0;
  color: var(--paper-deep);
}

.topology-stage-copy p {
  position: absolute;
  inset: 0 auto auto 0;
  margin: 0;
  opacity: 0;
  transform: translateY(14px);
}

.topology-stage-copy p:first-child {
  opacity: 1;
  transform: none;
}

.topology-stage-copy strong {
  color: var(--cyan);
}

.topology-fallback {
  position: absolute;
  top: 50%;
  right: 0;
  z-index: 0;
  width: min(64vw, 1000px);
  aspect-ratio: 1.32;
  transform: translateY(-50%);
  opacity: 0.9;
  transition: opacity 300ms var(--ease-out);
}

body.webgl-ready.topology-active .topology-fallback {
  opacity: 0;
}

.fallback-rail {
  position: absolute;
  left: 50%;
  width: 82%;
  height: 35%;
  border: 1px solid currentColor;
  border-radius: 50%;
  transform: translateX(-50%) rotate(-7deg);
  opacity: 0.72;
}

.fallback-rail::before,
.fallback-rail::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 9%;
  width: 82%;
  border-top: 1px solid currentColor;
  opacity: 0.48;
}

.fallback-rail::before {
  transform: rotate(18deg);
}

.fallback-rail::after {
  transform: rotate(-18deg);
}

.fallback-rail-top {
  top: 8%;
  color: var(--cyan);
}

.fallback-rail-bottom {
  bottom: 8%;
  color: var(--amber-soft);
}

.fallback-clusters {
  position: absolute;
  top: 26%;
  right: 8%;
  bottom: 24%;
  left: 8%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2px;
  perspective: 780px;
}

.fallback-clusters span {
  position: relative;
  flex: 0 1 clamp(8px, 1.25vw, 18px);
  width: clamp(8px, 1.25vw, 18px);
  height: 78%;
  background: var(--carbon-raised);
  border: 1px solid #5c6868;
  transform: rotateY(0);
}

.fallback-clusters span:nth-child(-n + 4),
.fallback-clusters span:nth-child(n + 18) {
  height: 58%;
  opacity: 0.62;
}

.fallback-clusters span:nth-child(-n + 4) { transform: rotateY(-38deg); }
.fallback-clusters span:nth-child(n + 5):nth-child(-n + 7) { transform: rotateY(-24deg); }
.fallback-clusters span:nth-child(n + 8):nth-child(-n + 10) { transform: rotateY(-10deg); }
.fallback-clusters span:nth-child(n + 12):nth-child(-n + 14) { transform: rotateY(10deg); }
.fallback-clusters span:nth-child(n + 15):nth-child(-n + 17) { transform: rotateY(24deg); }
.fallback-clusters span:nth-child(n + 18) { transform: rotateY(38deg); }

.fallback-clusters span:nth-child(n + 5):nth-child(-n + 7),
.fallback-clusters span:nth-child(n + 15):nth-child(-n + 17) {
  height: 68%;
  opacity: 0.76;
}

.fallback-clusters span:nth-child(n + 8):nth-child(-n + 14) {
  height: 86%;
}

.fallback-clusters span::before {
  content: "";
  position: absolute;
  top: 16%;
  right: 18%;
  left: 18%;
  height: 9%;
  background: #798482;
  box-shadow: 0 13px 0 #394142, 0 26px 0 #394142, 0 39px 0 #394142;
  opacity: 0.7;
}

.closing {
  position: relative;
  z-index: 4;
  min-height: 62svh;
  color: var(--paper);
  background: var(--carbon-raised);
  border-top: 3px solid var(--amber);
  overflow: clip;
}

.closing-signal {
  position: absolute;
  top: 18px;
  right: -16px;
  color: rgba(239, 239, 235, 0.055);
  font-size: 124px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  pointer-events: none;
}

.closing-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 54px;
  align-items: end;
  min-height: 62svh;
  padding: 112px 0 96px;
}

.closing h2 {
  max-width: 960px;
  margin-bottom: 22px;
  font-size: 58px;
  font-weight: 800;
}

.start-line {
  margin: 34px 0 0;
  color: var(--paper-deep);
  font-size: 1.08rem;
  font-weight: 700;
}

.closing .button-primary {
  color: var(--ink);
  background: var(--amber-soft);
}

.site-footer {
  padding: 28px 48px 24px;
  color: var(--paper-deep);
  background: var(--carbon);
  border-top: 1px solid var(--line-dark);
}

.site-footer-main {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 700;
}

.site-footer-main p {
  margin: 0;
}

.site-footer-main p:nth-child(2) {
  text-align: center;
}

.site-footer-main p:last-child {
  text-align: right;
}

.site-footer-compliance {
  display: flex;
  justify-content: center;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
}

.site-footer-compliance a {
  min-height: 28px;
  color: var(--muted-dark);
  font-size: 0.72rem;
  text-decoration: underline;
  text-underline-offset: 4px;
}

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

@media (max-width: 980px) {
  :root {
    --shell: calc(100vw - 64px);
  }

  .site-header {
    grid-template-columns: minmax(230px, 1fr) auto auto;
    padding: 0 32px;
  }

  .site-header.is-condensed {
    height: var(--header-height);
  }

  body:not(.js-ready) .site-nav {
    display: none;
  }

  body.js-ready .site-nav {
    display: flex;
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    width: min(420px, 100vw);
    padding: 30px;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    color: var(--paper);
    background: var(--carbon-soft);
    border-left: 1px solid var(--line-dark);
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transform: translate3d(calc(100% + 2px), 0, 0);
    transition: transform 260ms var(--ease-out), opacity 180ms var(--ease-out), visibility 0s linear 260ms;
  }

  body.js-ready .site-nav.is-open {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: translate3d(0, 0, 0);
    transition-delay: 0s;
  }

  body.js-ready .site-nav a {
    min-height: 58px;
    padding: 0 8px;
    border-bottom: 1px solid var(--line-dark);
    font-size: 1.08rem;
  }

  body.js-ready .nav-toggle {
    display: block;
  }

  .hero h1 {
    font-size: 64px;
  }

  .hero-inner {
    width: 60%;
  }

  .why-sai-heading h2,
  .ultrapod-heading h2 {
    font-size: 46px;
  }

  .topology-fallback {
    right: 0;
    width: 70vw;
  }

  .why-sai-rows article {
    padding-right: 28px;
    padding-left: 28px;
  }

  .closing h2 {
    font-size: 50px;
  }
}

@media (min-width: 861px) and (max-width: 1200px) {
  .ultrapod-sticky::before {
    inset: 0 44% 0 0;
  }

  .ultrapod-heading {
    grid-template-columns: minmax(0, 460px);
  }

  .ultrapod-heading p:last-child,
  .topology-stage-copy {
    max-width: 460px;
  }

  .topology-equation {
    max-width: 470px;
  }

  .topology-equation span {
    min-width: 80px;
    padding-right: 12px;
    padding-left: 12px;
  }
}

@media (max-width: 860px) {
  :root {
    --shell: calc(100vw - 40px);
    --header-height: 64px;
  }

  .site-header {
    grid-template-columns: 1fr auto;
    gap: 12px;
    height: var(--header-height);
    padding: 0 20px;
  }

  .site-header.is-condensed {
    height: var(--header-height);
  }

  .header-cta {
    display: none;
  }

  .hero {
    display: grid;
    grid-template-rows: auto minmax(220px, 34svh);
    min-height: 100svh;
    padding: calc(var(--header-height) + 38px) 20px 0;
  }

  .hero-photo {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    z-index: 1;
    grid-row: 2;
    width: calc(100% + 40px);
    min-height: 220px;
    margin-left: -20px;
    opacity: 0.78;
    clip-path: polygon(0 7%, 100% 0, 100% 100%, 0 100%);
  }

  .hero-photo img {
    object-position: 50% 48%;
  }

  .hero-inner {
    grid-row: 1;
    justify-content: flex-start;
    width: 100%;
    min-height: 0;
    padding-bottom: 30px;
  }

  .hero h1 {
    max-width: 680px;
    font-size: 52px;
  }

  .hero-lead {
    max-width: 620px;
    font-size: 1rem;
  }

  .hero-next {
    display: none;
  }

  .why-sai-heading {
    padding: 84px 0 56px;
  }

  .why-sai-heading h2,
  .ultrapod-heading h2 {
    font-size: 40px;
  }

  .ultrapod {
    min-height: 205svh;
  }

  .ultrapod-sticky {
    align-items: start;
    padding: calc(var(--header-height) + 38px) 0 36px;
  }

  .ultrapod-sticky::before {
    inset: 0;
    z-index: 2;
    background: linear-gradient(
      180deg,
      rgba(7, 9, 10, 0.98) 0%,
      rgba(7, 9, 10, 0.94) 48%,
      rgba(7, 9, 10, 0.72) 64%,
      rgba(7, 9, 10, 0.22) 80%,
      rgba(7, 9, 10, 0) 92%
    );
    border-right: 0;
  }

  .ultrapod-heading {
    grid-template-columns: minmax(0, 1fr);
  }

  .ultrapod-heading > div {
    max-width: 620px;
  }

  .ultrapod-heading p:last-child {
    line-height: 1.7;
  }

  .topology-equation {
    width: 100%;
    margin: 28px 0 0;
  }

  .topology-equation span {
    flex: 1;
    min-width: 0;
    padding: 12px 10px 14px;
  }

  .topology-equation strong {
    font-size: 1.7rem;
  }

  .topology-stage-copy {
    min-height: 90px;
    max-width: 540px;
    margin: 22px 0 0;
  }

  .topology-fallback {
    top: 74%;
    right: 0;
    left: 0;
    width: min(69vw, 552px);
    margin: auto;
  }

  .why-sai-rows {
    grid-template-columns: 1fr;
  }

  .why-sai-rows article {
    min-height: 0;
    padding: 36px 20px 40px;
    border-right: 0;
    border-bottom: 1px solid var(--line-graphite);
  }

  .why-sai-pillar {
    margin-bottom: 28px;
    font-size: 2.15rem;
  }

  .why-sai-claim {
    max-width: 640px;
    font-size: 1.6rem;
  }

  .why-sai-rows span {
    max-width: 640px;
  }

  .closing {
    min-height: 0;
  }

  .closing-signal {
    top: 22px;
    right: -8px;
    font-size: 72px;
  }

  .closing-inner {
    grid-template-columns: 1fr;
    align-items: start;
    min-height: 0;
    padding: 110px 0 76px;
  }

  .closing h2 {
    font-size: 44px;
  }

  .closing .button {
    justify-self: start;
  }

  .site-footer {
    padding-right: 20px;
    padding-left: 20px;
  }

  .site-footer-main {
    grid-template-columns: 1fr;
    gap: 8px;
    text-align: center;
  }

  .site-footer-main p:last-child {
    text-align: center;
  }
}

@media (max-width: 560px) {
  .brand-copy small {
    display: none;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .hero {
    min-height: 100svh;
    padding-top: calc(var(--header-height) + 28px);
    grid-template-rows: auto minmax(210px, 31svh);
  }

  .hero-signal {
    margin-bottom: 16px;
    font-size: 0.67rem;
  }

  .hero h1 {
    font-size: 40px;
    line-height: 1.01;
  }

  .hero-lead {
    margin-top: 20px;
    line-height: 1.72;
  }

  .hero-actions {
    gap: 10px;
    margin-top: 22px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-billing {
    margin-top: 22px;
    font-size: 0.82rem;
    line-height: 1.55;
  }

  .hero-photo {
    min-height: 210px;
    opacity: 0.8;
    clip-path: polygon(0 0, 100% 3.5%, 100% 100%, 0 100%);
  }

  .hero-photo img {
    object-position: 50% 48%;
  }

  .why-sai-heading {
    padding-top: 70px;
  }

  .why-sai-heading h2,
  .ultrapod-heading h2 {
    font-size: 34px;
  }

  .why-sai-pillar {
    margin-bottom: 24px;
    font-size: 2rem;
  }

  .why-sai-claim {
    font-size: 1.42rem;
  }

  .ultrapod {
    min-height: 190svh;
  }

  .ultrapod-heading {
    grid-template-columns: 1fr;
  }

  .topology-equation {
    display: grid;
    grid-template-columns: 1fr 24px 1fr 24px 1fr;
    width: 100%;
    margin: 20px 0 0;
  }

  .topology-equation .equation-total {
    grid-column: 1 / -1;
    grid-template-columns: auto 1fr;
    align-items: end;
  }

  .topology-equation .equation-total small {
    margin: 0 0 3px 10px;
  }

  .topology-equation i:nth-of-type(3) {
    display: none;
  }

  .topology-stage-copy {
    min-height: 96px;
    margin: 18px 0 0;
    font-size: 0.92rem;
    line-height: 1.6;
  }

  .topology-fallback {
    top: 80%;
    width: 70vw;
  }

  .closing-signal {
    font-size: 52px;
  }

  .closing h2 {
    font-size: 36px;
  }

  .closing .button {
    width: 100%;
  }
}

@media (max-width: 560px) and (max-height: 720px) {
  .hero {
    grid-template-rows: auto 190px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-lead {
    margin-top: 16px;
    font-size: 0.92rem;
    line-height: 1.58;
  }

  .hero-actions {
    margin-top: 18px;
  }

  .hero-inner {
    padding-bottom: 22px;
  }

  .hero-photo {
    min-height: 190px;
  }
}

html[data-render-quality="static"] .ultrapod,
body:not(.js-ready) .ultrapod {
  min-height: auto;
  background: var(--carbon);
}

html[data-render-quality="static"] .ultrapod-sticky,
body:not(.js-ready) .ultrapod-sticky {
  position: relative;
  min-height: 100svh;
}

html[data-render-quality="static"] .topology-stage-copy p,
body:not(.js-ready) .topology-stage-copy p {
  opacity: 0;
  transform: translateY(14px);
}

html[data-render-quality="static"] .topology-stage-copy p:last-child,
body:not(.js-ready) .topology-stage-copy p:last-child {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .topology-canvas {
    display: none;
  }

  .topology-fallback {
    opacity: 0.9 !important;
  }
}

@media (forced-colors: active) {
  .hero-photo,
  .topology-canvas {
    display: none;
  }

  .topology-fallback {
    opacity: 1 !important;
  }

  .button,
  .header-cta,
  .nav-toggle {
    border: 1px solid currentColor;
  }
}