@charset "UTF-8";
/* Standalone static site: no fonts, frameworks, or external runtime services. */
:root {
  --paper: #f6f8fc;
  --ink: #10263d;
  --muted: #526277;
  --line: #dce4ee;
  --blue: #356dff;
  --link: #2459d6;
  --header: 88px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, video:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 5px;
}
::selection { background: #dce7ff; color: var(--ink); }
.mono { font-family: var(--mono); }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 30; padding: 12px 20px; background: var(--ink); color: #fff; border-radius: 8px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgb(246 248 252 / 96%); border-bottom: 1px solid var(--line); backdrop-filter: blur(16px); }
.header-inner { max-width: 1376px; height: var(--header); margin: auto; padding: 0 48px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: block; flex-shrink: 0; width: 172px; }
.brand img { display: block; width: 100%; height: auto; }
.main-nav { display: flex; align-items: center; gap: 24px; height: 100%; min-width: 0; max-width: 100%; }
.main-nav a { position: relative; display: flex; flex-shrink: 0; align-items: center; min-height: 44px; height: 100%; font-size: 14px; white-space: nowrap; color: var(--muted); }
.main-nav a:hover, .main-nav a[aria-current] { color: var(--link); }
.main-nav a[aria-current]::after { content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 3px; background: var(--blue); border-radius: 3px 3px 0 0; }
.header-note { display: flex; align-items: center; gap: 9px; font-size: 13px; color: var(--muted); white-space: nowrap; }
.status-dot { display: inline-block; flex-shrink: 0; width: 6px; height: 6px; background: var(--blue); border-radius: 50%; }
.chapter { padding: 96px 48px; }
.section-inner { max-width: 1280px; margin: 0 auto; min-width: 0; }
.split-layout { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); align-items: center; gap: 56px; }
.section-copy { min-width: 0; }
.eyebrow { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 14px; font-weight: 550; margin: 0 0 28px; color: var(--muted); }
.chapter-number { color: var(--link); font: 13px var(--mono); }
h1, h2 { margin: 0 0 24px; font-weight: 650; letter-spacing: -.035em; line-height: 1.2; text-wrap: balance; }
h1 { font-size: clamp(34px, 3.25vw, 48px); }
h2 { font-size: clamp(30px, 2.8vw, 40px); }
.highlight { display: block; color: var(--blue); }
.description { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.9; }
.metric { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; margin: 32px 0; }
.metric strong { color: var(--ink); font-size: 56px; letter-spacing: -.055em; font-weight: 650; line-height: 1.15; white-space: nowrap; font-variant-numeric: tabular-nums; }
.metric > span { color: var(--muted); font-size: 14px; }
.greater { font-size: .65em; vertical-align: 8%; margin-right: 5px; font-weight: 450; }
.metric-unit { font-size: 21px; margin-left: 4px; letter-spacing: 0; }
.billion-unit { font-size: .72em; margin-left: 3px; }
.text-links { display: flex; gap: 24px; flex-wrap: wrap; }
.text-links a, .text-link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; font-size: 14px; color: var(--link); }
.text-links a:hover, .text-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.illustration-card, .video-card { min-width: 0; margin: 0; background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.capture-card { box-shadow: 0 16px 48px rgb(16 38 61 / 5%); }
.capture-slides { aspect-ratio: 1920 / 1049; background: #fff; }
.capture-slide, .capture-slide img { width: 100%; height: 100%; }
.capture-slide img, .fusion-image { display: block; object-fit: contain; }
.carousel-controls { display: flex; flex-wrap: nowrap; align-items: center; justify-content: center; gap: 8px; border-top: 1px solid var(--line); padding: 8px; }
.carousel-controls button { display: grid; place-items: center; flex: 0 0 44px; width: 44px; height: 44px; padding: 0; border: 0; border-radius: 8px; background: transparent; color: var(--ink); cursor: pointer; }
.carousel-controls svg { display: block; width: 18px; height: 18px; }
.carousel-controls button:hover { background: #eef3ff; color: var(--link); }
.carousel-controls button:focus-visible { outline-offset: -3px; }
.carousel-page { flex: 0 0 48px; width: 48px; text-align: center; font-size: 13px; font-variant-numeric: tabular-nums; color: var(--muted); white-space: nowrap; }
.touch-section { padding-top: 72px; }
.touch-section .split-layout { grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 80px; }
.touch-section .section-copy { grid-column: 2; grid-row: 1; }
.touch-section .video-card { grid-column: 1; grid-row: 1; }
.video-stage { position: relative; aspect-ratio: 16 / 9; background: #fff; }
.video-stage video { display: block; width: 100%; height: 100%; object-fit: contain; }
.video-stage video:focus-visible { outline-offset: -4px; }
.video-caption { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 16px 20px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); }
.video-caption .mono { font-size: 11px; align-self: center; }
.video-error { position: absolute; inset: 0; display: grid; place-items: center; margin: 0; padding: 24px; background: #10263ded; color: #fff; text-align: center; pointer-events: none; }
[hidden] { display: none !important; }
.ego-section { padding-top: 0; padding-bottom: 0; }
.ego-content { padding: 56px; background: #fff; border: 1px solid var(--line); border-radius: 24px; }
.ego-heading { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 20px 48px; margin-bottom: 40px; }
.ego-heading h2 { font-size: clamp(28px, 2.4vw, 36px); margin-bottom: 0; }
.ego-heading .eyebrow { margin-bottom: 20px; }
.ego-heading > .description { grid-column: 1; grid-row: 2; max-width: 520px; }
.ego-heading > .metric { grid-column: 2; grid-row: 1 / 3; }
.ego-heading .metric { margin: 0; }
.ego-heading .metric strong { font-size: 48px; }
.ego-content .video-card { max-width: 960px; margin: 0 auto; border-radius: 12px; }
.ego-stage { aspect-ratio: 1280 / 832; }
.fusion-section { text-align: center; }
.fusion-section .eyebrow { justify-content: center; }
.fusion-badge { background: #e8efff; color: var(--link); padding: 3px 10px; border-radius: 6px; font-size: 18px; }
.fusion-card { max-width: 1120px; margin: 40px auto 20px; padding: 24px; }
.fusion-image { display: block; width: 100%; height: auto; }
.world-section { background: var(--ink); color: #f6f8fc; }
.world-section .eyebrow, .world-section .description, .world-section .metric > span { color: #b9cadc; }
.world-section .highlight, .world-section .chapter-number { color: #91b3ff; }
.world-section .metric strong { color: #fff; }
.world-section .metric { margin-bottom: 0; }
.world-section .video-card { border-color: #344b63; }
.world-section video:focus-visible { outline-color: #91b3ff; outline-offset: -4px; }
.site-footer { max-width: 1376px; margin: auto; padding: 32px 48px; display: flex; justify-content: space-between; align-items: center; gap: 24px; font-size: 14px; }
.footer-motto { display: block; color: var(--muted); margin-top: 4px; }
.site-footer > .mono { font-size: 11px; color: var(--muted); }
.site-footer > a { display: inline-flex; align-items: center; min-height: 44px; color: var(--link); white-space: nowrap; }
.noscript-notice { padding: 24px; text-align: center; }
.noscript-notice a { text-decoration: underline; color: var(--link); }
@media (max-width: 1100px) {
  .header-note { display: none; }
  .main-nav { gap: 20px; }
  .chapter { padding-left: 32px; padding-right: 32px; }
  .split-layout, .touch-section .split-layout { gap: 32px; }
  .ego-content { padding: 40px; }
  .ego-heading { gap: 20px 32px; }
}
@media (max-width: 800px) {
  :root { --header: 112px; }
  .header-inner { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; padding: 16px 24px 0; }
  .brand { width: 145px; }
  .main-nav { height: 48px; min-height: 48px; width: 100%; justify-content: flex-start; gap: 24px; overflow-x: auto; scrollbar-width: thin; }
  .main-nav a { font-size: 14px; }
  .main-nav a:focus-visible { outline-offset: -4px; }
  .chapter { padding: 56px 24px; }
  .split-layout, .touch-section .split-layout { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .touch-section .section-copy, .touch-section .video-card { grid-column: auto; grid-row: auto; }
  .eyebrow { margin-bottom: 20px; }
  h1 { font-size: 42px; }
  h2 { font-size: 34px; }
  .description { max-width: 580px; }
  .metric { margin: 24px 0; }
  .metric strong { font-size: 48px; }
  .ego-section { padding-top: 0; padding-bottom: 0; }
  .ego-content { padding: 32px; }
  .ego-heading h2 { font-size: 30px; }
  .ego-heading .metric strong { font-size: 40px; }
  .fusion-card { padding: 16px; margin-top: 32px; }
  .site-footer { padding: 28px 24px; }
  .site-footer > .mono { display: none; }
}
@media (max-width: 540px) {
  .header-inner { padding-left: 20px; padding-right: 20px; }
  .main-nav { gap: 20px; }
  .main-nav a { font-size: 13px; }
  .chapter { padding-left: 20px; padding-right: 20px; }
  h1 { font-size: 36px; }
  h2 { font-size: 30px; }
  .eyebrow { gap: 10px; }
  .ego-content { padding: 28px 16px 16px; border-radius: 18px; }
  .ego-heading { grid-template-columns: minmax(0, 1fr); gap: 20px; margin-bottom: 28px; }
  .ego-heading h2 { font-size: 28px; }
  .ego-heading > .description, .ego-heading > .metric { grid-column: auto; grid-row: auto; }
  .ego-heading .metric strong { font-size: 44px; }
  .fusion-card { padding: 8px; }
  .video-caption { padding: 12px 16px; }
  .site-footer { padding-left: 20px; padding-right: 20px; font-size: 13px; flex-wrap: wrap; gap: 12px 24px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}