:root {
  --bg: #020308;
  --bg-deep: #000105;
  --ink: #f2f4f6;
  --muted: #a6afbd;
  --faint: #707a8c;
  --line: rgba(220, 229, 247, 0.18);
  --line-soft: rgba(220, 229, 247, 0.1);
  --accent: #c7ced6;
  --mint: #a4afba;
  --button-hover: #b7c0c9;
  --panel: rgba(9, 14, 25, 0.7);
  --panel-strong: rgba(3, 7, 15, 0.93);
  --shell: min(1380px, calc(100vw - 2 * clamp(22px, 5.8vw, 92px)));
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --display-weight: 650;
  --accent-weight: 380;
}

:root[data-theme="light"] {
  --bg: #f1f3ef;
  --bg-deep: #e7ebe5;
  --ink: #14202b;
  --muted: #596674;
  --faint: #7e8b98;
  --line: rgba(22, 35, 48, 0.2);
  --line-soft: rgba(22, 35, 48, 0.11);
  --accent: #465563;
  --mint: #687783;
  --button-hover: #d7dde1;
  --panel: rgba(243, 246, 241, 0.68);
  --panel-strong: rgba(246, 248, 244, 0.96);
  --display-weight: 620;
  --accent-weight: 430;
}

* { box-sizing: border-box; }

html {
  overflow-x: clip;
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--bg);
  color: var(--ink);
  font-family: "Helvetica Neue", "Avenir Next", "SF Pro Display", "PingFang SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.45s ease, color 0.45s ease;
}

body::after {
  position: fixed;
  z-index: 80;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.18'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
  opacity: 0.1;
  content: "";
}

button, a { color: inherit; font: inherit; }
a { text-decoration: none; }
button { border: 0; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--mint); outline-offset: 5px; }
img, svg { display: block; }
.page-shell { width: var(--shell); margin-inline: auto; }

.ambient-layer {
  position: fixed;
  z-index: 0;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  background: var(--bg);
}

.ambient-layer::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(2, 3, 8, 0.12), rgba(2, 3, 8, 0.64) 56%, var(--bg) 100%);
  content: "";
}

.ambient-media {
  position: absolute;
  inset: -10%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  opacity: 0.24;
  transform: translate3d(var(--ambient-x, 0), var(--ambient-y, 0), 0) scale(1.06);
  transition: transform 1.4s var(--ease), opacity 0.45s ease, filter 0.45s ease;
}

.ambient-media--hero { background-image: url("./assets/aurora-hero.png"); opacity: 0.22; }
.ambient-media--blue { background-image: url("./assets/aurora-blue.png"); mix-blend-mode: screen; opacity: 0.1; }
.ambient-media--mesh { background-image: url("./assets/aurora-mesh.png"); mix-blend-mode: screen; opacity: 0.08; }

.pixel-field {
  position: fixed;
  z-index: 0;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.72;
  mix-blend-mode: screen;
}

main, .site-footer { position: relative; z-index: 1; }

:root[data-theme="light"] .ambient-layer::after {
  background: linear-gradient(180deg, rgba(241, 243, 239, 0.06), rgba(241, 243, 239, 0.72) 58%, var(--bg) 100%);
}

:root[data-theme="light"] .ambient-media {
  filter: saturate(0.62) brightness(1.15) contrast(0.94);
  mix-blend-mode: multiply;
}

:root[data-theme="light"] .ambient-media--hero { opacity: 0.18; }
:root[data-theme="light"] .ambient-media--blue,
:root[data-theme="light"] .ambient-media--mesh { opacity: 0.075; }
:root[data-theme="light"] .pixel-field { opacity: 0.5; mix-blend-mode: multiply; }

.preloader {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--bg-deep);
  transition: opacity 0.8s var(--ease), visibility 0.8s;
}

.preloader.is-done { visibility: hidden; opacity: 0; pointer-events: none; }
.preloader__inner { width: min(300px, 72vw); }
.preloader__brand { display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 600; letter-spacing: 0.06em; }
.preloader__brand img { width: 18px; height: 19px; object-fit: contain; }
.preloader__line { height: 1px; margin-top: 24px; overflow: hidden; background: var(--line-soft); }
.preloader__line span { display: block; width: 100%; height: 100%; background: linear-gradient(90deg, var(--accent), var(--mint)); transform: scaleX(0); transform-origin: left; animation: preload 1.25s var(--ease) forwards; }
.preloader p { margin: 10px 0 0; color: var(--faint); font-family: "SF Mono", monospace; font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; }

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  height: 76px;
  padding: 0 clamp(22px, 5.8vw, 92px);
  border-bottom: 1px solid transparent;
  background: linear-gradient(180deg, rgba(2, 3, 8, 0.76), rgba(2, 3, 8, 0));
  transition: background 0.35s ease, border-color 0.35s ease, backdrop-filter 0.35s ease;
}

.site-header.is-scrolled { border-color: var(--line-soft); background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; justify-self: start; gap: 11px; font-size: 15px; font-weight: 650; letter-spacing: 0.045em; }
.brand img { width: 23px; height: 24px; object-fit: contain; }
.site-nav { display: flex; align-items: center; justify-self: center; gap: clamp(22px, 3vw, 48px); }
.site-nav a, .nav-cta, .menu-toggle, .language-toggle, .theme-toggle { font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; }
.site-nav a { position: relative; color: var(--muted); transition: color 0.25s ease; }
.site-nav a::after { position: absolute; right: 0; bottom: -7px; left: 0; height: 1px; background: var(--mint); content: ""; transform: scaleX(0); transform-origin: right; transition: transform 0.35s var(--ease); }
.site-nav a:hover { color: var(--ink); }
.site-nav a:hover::after { transform: scaleX(1); transform-origin: left; }
.header-tools { display: flex; align-items: center; justify-self: end; gap: 10px; }
.language-toggle, .theme-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 42px; padding: 0 8px; color: var(--muted); background: transparent; cursor: pointer; transition: color 0.25s ease; }
.language-toggle:hover, .theme-toggle:hover { color: var(--ink); }
.theme-toggle__icon { display: block; width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.25; }
.theme-toggle__icon--moon { display: none; }
:root[data-theme="light"] .theme-toggle__icon--sun { display: none; }
:root[data-theme="light"] .theme-toggle__icon--moon { display: block; }
.nav-cta { display: inline-flex; align-items: center; gap: 10px; min-height: 38px; padding: 0 15px; border: 1px solid var(--line); background: transparent; transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s var(--ease); }
.nav-cta:hover { border-color: var(--ink); background: color-mix(in srgb, var(--ink) 8%, transparent); transform: translateY(-2px); }
.nav-cta svg, .button svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.25; }
.menu-toggle { display: none; align-items: center; justify-self: end; gap: 10px; min-height: 44px; padding: 10px 0 10px 10px; color: var(--ink); background: transparent; cursor: pointer; }
.menu-icon { display: grid; gap: 5px; }
.menu-icon i { display: block; width: 18px; height: 1px; background: currentColor; transition: transform 0.25s ease, opacity 0.25s ease; }
.menu-toggle[aria-expanded="true"] .menu-icon i:first-child { transform: translateY(3px); }
.menu-toggle[aria-expanded="true"] .menu-icon i:last-child { transform: translateY(-3px); opacity: 0.45; }

h1, h2, h3 { margin-bottom: 0; font-family: "Helvetica Neue", "Avenir Next", "SF Pro Display", "PingFang SC", sans-serif; font-weight: var(--display-weight); letter-spacing: -0.018em; line-height: 1.03; text-transform: uppercase; }
h1 em, h2 em, h3 em { color: var(--accent); font-style: normal; font-weight: var(--accent-weight); letter-spacing: -0.005em; }
:root[data-language="zh"] h1, :root[data-language="zh"] h2, :root[data-language="zh"] h3 { letter-spacing: 0; text-transform: none; }
:root[data-language="zh"] h1 em, :root[data-language="zh"] h2 em, :root[data-language="zh"] h3 em { letter-spacing: 0.01em; }

.hero { position: relative; min-height: 100dvh; overflow: clip; padding: 120px 0 80px; }
.hero__visual { position: absolute; z-index: 0; inset: 5vh 0 0; overflow: visible; pointer-events: none; opacity: 0; animation: visual-in 1.2s 0.1s var(--ease) forwards; }
.hero__visual-index { position: absolute; top: 17%; right: clamp(22px, 7vw, 110px); display: flex; align-items: center; gap: 9px; color: var(--muted); font-family: "SF Mono", monospace; font-size: 10px; letter-spacing: 0.12em; }
.hero__visual-index i { width: 38px; height: 1px; background: var(--line); }
.hero__copy { position: relative; z-index: 2; display: flex; flex-direction: column; justify-content: flex-end; min-height: calc(100dvh - 200px); padding-bottom: 14vh; }
.eyebrow { display: flex; align-items: center; gap: 9px; margin: 0; color: var(--muted); font-family: "SF Mono", monospace; font-size: 10px; letter-spacing: 0.18em; line-height: 1.6; text-transform: uppercase; }
.eyebrow > span:first-child { display: inline-block; width: 22px; height: 1px; background: var(--mint); }
.hero h1 { max-width: 720px; margin-top: 30px; font-size: clamp(3.4rem, 7vw, 7.2rem); }
.hero__lede { max-width: 520px; margin: 38px 0 0; color: var(--muted); font-size: 17px; line-height: 1.86; letter-spacing: 0.012em; }
.hero__actions { display: flex; align-items: center; gap: 28px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 54px; padding: 0 22px; border: 1px solid var(--line); font-size: 11px; font-weight: 650; letter-spacing: 0.15em; text-transform: uppercase; transition: border-color 0.25s ease, background 0.25s ease, color 0.25s ease, transform 0.25s var(--ease); }
.button:hover { border-color: var(--ink); transform: translateY(-2px); }
.button--outline { background: color-mix(in srgb, var(--bg) 36%, transparent); }
.button--solid { border-color: var(--ink); background: var(--ink); color: var(--bg); }
.button--solid:hover { background: var(--button-hover); color: var(--bg-deep); }
.quiet-link { display: inline-flex; align-items: center; gap: 10px; color: var(--muted); font-size: 12px; letter-spacing: 0.08em; transition: color 0.25s ease, transform 0.25s var(--ease); }
.quiet-link span:last-child { color: var(--mint); font-size: 18px; }
.quiet-link:hover { color: var(--ink); transform: translateX(4px); }
.hero__meta { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 58px; color: var(--faint); font-family: "SF Mono", monospace; font-size: 9px; letter-spacing: 0.08em; line-height: 1.7; text-transform: uppercase; }
.scroll-cue { position: absolute; right: clamp(22px, 5.8vw, 92px); bottom: 32px; display: flex; align-items: center; gap: 13px; color: var(--faint); font-family: "SF Mono", monospace; font-size: 9px; letter-spacing: 0.13em; text-transform: uppercase; writing-mode: vertical-rl; }
.scroll-cue svg { width: 18px; height: 28px; fill: none; stroke: var(--mint); stroke-linecap: round; stroke-linejoin: round; stroke-width: 1; }

.idea { display: grid; grid-template-columns: 0.18fr 0.82fr; gap: 7vw; padding-top: clamp(180px, 25vw, 380px); padding-bottom: clamp(180px, 25vw, 380px); }
.idea__index { color: var(--mint); font-family: "SF Mono", monospace; font-size: 11px; letter-spacing: 0.14em; }
.idea__copy { max-width: 780px; }
.idea h2 { margin-top: 34px; font-size: clamp(3.5rem, 7.4vw, 9rem); }
.idea__body { max-width: 500px; margin: 44px 0 0; color: var(--muted); font-size: 17px; line-height: 1.9; }
.idea__aside { align-self: end; max-width: 220px; margin: 0; color: var(--faint); font-family: "SF Mono", monospace; font-size: 10px; letter-spacing: 0.1em; line-height: 1.85; text-transform: uppercase; }

.layer-story { position: relative; min-height: 300vh; }
.layer-story__sticky { position: sticky; top: 0; height: 100dvh; overflow: hidden; }
.layer-stage { position: relative; height: 100%; overflow: hidden; background: color-mix(in srgb, var(--bg) 46%, transparent); isolation: isolate; }
.layer-stage::before { position: absolute; inset: 0; background: linear-gradient(90deg, color-mix(in srgb, var(--bg) 44%, transparent), transparent 64%, color-mix(in srgb, var(--bg) 16%, transparent)); content: ""; pointer-events: none; }
.layer-stage::after { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 68%, color-mix(in srgb, var(--bg) 34%, transparent)); content: ""; pointer-events: none; }
.layer-stage__copy { position: absolute; z-index: 2; left: clamp(22px, 12vw, 180px); bottom: 15%; width: min(650px, 48vw); }
.layer-stage__copy h2 { margin-top: 32px; font-size: clamp(3.2rem, 6vw, 8rem); }
.layer-stage__copy > p:not(.eyebrow) { max-width: 430px; margin: 38px 0 0; color: var(--muted); font-size: 16px; line-height: 1.9; }
.stage-feature { display: inline-block; margin-top: 34px; padding-top: 13px; border-top: 1px solid var(--line); color: var(--mint); font-family: "SF Mono", monospace; font-size: 10px; letter-spacing: 0.1em; line-height: 1.7; text-transform: uppercase; }
.layer-stage__progress { position: absolute; z-index: 2; top: 94px; right: clamp(22px, 5.8vw, 92px); display: flex; align-items: center; gap: 12px; color: var(--muted); font-family: "SF Mono", monospace; font-size: 10px; letter-spacing: 0.08em; }
.layer-stage__progress i { display: block; width: 110px; height: 1px; overflow: hidden; background: var(--line); }
.layer-stage__progress b { display: block; width: 34%; height: 100%; background: linear-gradient(90deg, var(--accent), var(--mint)); transition: width 0.8s var(--ease); }
.layer-track { position: absolute; top: 0; right: 0; left: 0; display: grid; grid-template-rows: repeat(3, 100vh); pointer-events: none; }
.layer-step { min-height: 100vh; }

.capabilities { padding-top: clamp(170px, 24vw, 360px); padding-bottom: clamp(170px, 24vw, 360px); }
.capabilities__heading { display: grid; grid-template-columns: minmax(220px, 0.55fr) minmax(360px, 1.45fr); gap: 70px; align-items: end; }
.capabilities h2 { margin-top: 34px; font-size: clamp(3.5rem, 7.4vw, 9rem); }
.capability-list { margin-top: 104px; border-top: 1px solid var(--line); }
.capability-row { display: grid; grid-template-columns: 48px minmax(160px, 0.72fr) minmax(240px, 1.28fr) 30px; align-items: baseline; gap: 22px; padding: 27px 0; border-bottom: 1px solid var(--line-soft); transition: padding 0.35s var(--ease), border-color 0.35s ease, background 0.35s ease; }
.capability-row:hover { padding-right: 10px; padding-left: 10px; border-color: var(--mint); background: linear-gradient(90deg, color-mix(in srgb, var(--mint) 4%, transparent), transparent 80%); }
.capability-row > span { color: var(--mint); font-family: "SF Mono", monospace; font-size: 10px; }
.capability-row strong { font-size: 18px; font-weight: 550; letter-spacing: 0.025em; text-transform: uppercase; }
.capability-row p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.82; }
.capability-row i { color: var(--mint); font-size: 18px; font-style: normal; text-align: right; }

.boundaries { display: grid; grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr); gap: clamp(48px, 8vw, 120px); padding-top: clamp(150px, 20vw, 300px); padding-bottom: clamp(150px, 20vw, 300px); border-top: 1px solid var(--line-soft); }
.boundaries__copy { min-width: 0; max-width: 560px; }
.boundaries h2 { max-width: 500px; margin-top: 34px; font-size: clamp(3.5rem, 5.6vw, 6.8rem); }
.boundaries__copy > p:last-child { max-width: 390px; margin: 38px 0 0; color: var(--muted); font-size: 15px; line-height: 1.9; }
.boundary-lines { align-self: end; border-top: 1px solid var(--line); }
.boundary-lines > div { display: grid; grid-template-columns: 42px minmax(190px, 0.8fr) minmax(160px, 1.2fr); gap: 20px; align-items: baseline; padding: 26px 0; border-bottom: 1px solid var(--line-soft); }
.boundary-lines span { color: var(--mint); font-family: "SF Mono", monospace; font-size: 10px; }
.boundary-lines strong { font-size: 14px; font-weight: 550; letter-spacing: 0.03em; line-height: 1.55; text-transform: uppercase; }
.boundary-lines p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }

.download-scene { position: relative; overflow: hidden; padding: clamp(160px, 22vw, 330px) 0 clamp(110px, 14vw, 210px); border-top: 1px solid var(--line-soft); background: color-mix(in srgb, var(--bg-deep) 72%, transparent); }
.download-scene__inner { position: relative; display: block; min-height: min(560px, 62vh); }
.download-copy { position: relative; z-index: 1; }
.download-copy h2 { margin-top: 34px; font-size: clamp(3.6rem, 7.6vw, 9rem); }
.download-copy > p:not(.eyebrow):not(.download-note) { max-width: 320px; margin: 38px 0 34px; color: var(--muted); font-size: 17px; line-height: 1.86; }
.download-note { max-width: 440px; margin: 22px 0 0; color: var(--faint); font-family: "SF Mono", monospace; font-size: 9px; letter-spacing: 0.07em; line-height: 1.75; text-transform: uppercase; }
.site-footer { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 30px; min-height: 100px; border-top: 1px solid var(--line-soft); color: var(--faint); font-family: "SF Mono", monospace; font-size: 9px; letter-spacing: 0.08em; line-height: 1.7; text-transform: uppercase; }
.site-footer .brand { color: var(--ink); font-family: "Helvetica Neue", "Avenir Next", sans-serif; font-size: 13px; letter-spacing: 0.045em; text-transform: none; }
.download-toast { position: fixed; z-index: 90; right: 20px; bottom: 20px; max-width: 310px; padding: 12px 16px; border: 1px solid var(--line); background: var(--panel-strong); color: var(--ink); font-size: 12px; line-height: 1.6; opacity: 0; pointer-events: none; transform: translateY(12px); transition: opacity 0.3s ease, transform 0.3s var(--ease); }
.download-toast.is-visible { opacity: 1; transform: translateY(0); }

[data-reveal] { opacity: 0; filter: blur(7px); transform: translateY(24px); transition: opacity 0.9s var(--ease), filter 0.9s ease, transform 0.9s var(--ease); }
[data-reveal].is-visible { opacity: 1; filter: none; transform: none; }

:root[data-theme="light"] .site-header { background: linear-gradient(180deg, rgba(241, 243, 239, 0.9), rgba(241, 243, 239, 0)); }
:root[data-theme="light"] .brand img,
:root[data-theme="light"] .preloader__brand img { filter: brightness(0.22); }
:root[data-theme="light"] .layer-stage { background: color-mix(in srgb, var(--bg) 58%, transparent); }
:root[data-theme="light"] .layer-stage::before { background: linear-gradient(90deg, color-mix(in srgb, var(--bg) 46%, transparent), transparent 64%, color-mix(in srgb, var(--bg) 16%, transparent)); }
:root[data-theme="light"] .download-scene { background: color-mix(in srgb, var(--bg-deep) 58%, transparent); }

@keyframes preload { to { transform: scaleX(1); } }
@keyframes visual-in { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

@media (max-width: 1100px) {
  .site-nav { gap: 23px; }
  .header-tools { gap: 4px; }
  .theme-toggle { padding-inline: 4px; }
  .layer-stage__copy { left: 8vw; width: min(560px, 50vw); }
}

@media (max-width: 980px) {
  .site-header { grid-template-columns: auto 1fr auto; }
  .site-nav { position: fixed; top: 76px; right: 18px; left: 18px; display: grid; gap: 0; padding: 16px 20px; border: 1px solid var(--line); background: var(--panel-strong); opacity: 0; pointer-events: none; transform: translateY(-12px); transition: opacity 0.3s ease, transform 0.35s var(--ease); }
  .site-nav.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .site-nav a { padding: 15px 0; border-bottom: 1px solid var(--line-soft); }
  .site-nav a:last-child { border-bottom: 0; }
  .menu-toggle { display: inline-flex; }
  .nav-cta { display: none; }
  .hero__visual-index { right: 5vw; }
  .capabilities__heading, .boundaries, .download-scene__inner { grid-template-columns: 1fr; }
  .capabilities__heading { gap: 44px; }
  .capability-list { margin-top: 72px; }
  .boundary-lines { margin-top: 30px; }
}

@media (max-width: 720px) {
  .site-header { height: 68px; padding-inline: 20px; }
  .brand { gap: 9px; font-size: 14px; }
  .brand img { width: 20px; height: 21px; }
  .site-nav { top: 68px; }
  .language-toggle { min-width: 36px; padding: 0 5px; }
  .theme-toggle { min-width: 36px; padding: 0 5px; }
  .theme-toggle [data-theme-label] { display: none; }
  .ambient-media--blue, .ambient-media--mesh { opacity: 0.045; }
  .pixel-field { opacity: 0.42; }
  .hero { min-height: 100dvh; padding-top: 100px; }
  .hero__visual { inset: 0 -10% 0 -8%; }
  .hero__visual-index { top: 12%; right: 7%; }
  .hero__copy { min-height: calc(100dvh - 100px); padding-bottom: 9vh; }
  .hero h1 { max-width: 360px; font-size: clamp(3.15rem, 13.2vw, 5.2rem); line-height: 1.03; }
  .hero__lede { max-width: 340px; font-size: 15px; line-height: 1.9; }
  .hero__actions { align-items: flex-start; flex-direction: column; gap: 22px; }
  .hero__meta { gap: 10px 18px; margin-top: 44px; line-height: 1.75; }
  .scroll-cue { display: none; }
  .idea { display: block; padding-top: 150px; padding-bottom: 150px; }
  .idea__copy { margin-top: 40px; }
  .idea h2, .capabilities h2, .boundaries h2, .download-copy h2 { font-size: clamp(3.25rem, 15vw, 5.7rem); }
  .idea__aside { margin-top: 58px; }
  .layer-story { min-height: auto; }
  .layer-story__sticky { position: relative; height: 700px; }
  .layer-stage__copy { right: 22px; bottom: 13%; left: 22px; width: auto; }
  .layer-stage__copy h2 { font-size: clamp(2.85rem, 14.5vw, 5.2rem); }
  .layer-stage__copy > p:not(.eyebrow) { margin-top: 30px; line-height: 1.9; }
  .layer-stage__progress { top: 86px; right: 22px; }
  .layer-track { position: relative; display: block; }
  .layer-step { min-height: 72vh; }
  .capabilities, .boundaries { display: block; padding-top: 150px; padding-bottom: 150px; }
  .capabilities__heading { display: block; }
  .capability-list { margin-top: 65px; }
  .capability-row { grid-template-columns: 34px 1fr 22px; gap: 13px 18px; }
  .capability-row strong { font-size: 17px; }
  .capability-row p { grid-column: 2 / 4; }
  .boundaries__copy { max-width: 430px; }
  .boundary-lines { margin-top: 70px; }
  .boundary-lines > div { grid-template-columns: 34px 1fr; gap: 13px 18px; }
  .boundary-lines p { grid-column: 2; }
  .download-scene { padding: 150px 0 110px; }
  .download-scene__inner { display: block; min-height: auto; }
  .site-footer { grid-template-columns: 1fr; gap: 12px; padding-top: 30px; padding-bottom: 30px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  [data-reveal] { opacity: 1; filter: none; transform: none; }
}