:root {
  --paper: #f3f4f2;
  --ink: #171b1d;
  --muted: #62696e;
  --silver: #d5d9db;
  --blue: #dce7f2;
  --focus: #325ecc;
  --gutter: clamp(24px, 5vw, 88px);
  --sans: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ease: cubic-bezier(.22, .68, .08, 1);
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { margin: 0; }
h1, h2, h3, p { margin: 0; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; border: 0; color: inherit; }
button:disabled { cursor: default; }
button, a { -webkit-tap-highlight-color: transparent; }
img, video { display: block; max-width: 100%; }
svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 6px; }
::selection { background: #c1d4ed; color: var(--ink); }
.skip-link { position: fixed; z-index: 100; left: 20px; top: 12px; padding: 14px 20px; background: white; color: var(--ink); transform: translateY(-160%); }
.skip-link:focus { transform: none; }
.site-header { position: fixed; z-index: 20; inset: 0 0 auto; height: 100px; padding: 0 var(--gutter); display: flex; align-items: center; gap: 48px; color: var(--ink); transition: background .25s, color .25s; }
.site-header.is-scrolled { background: #f3f4f2eb; backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
.site-header.is-dark { color: var(--paper); background: #171b1dce; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand img { width: 26px; height: 36px; }
.brand strong { font-size: 19px; font-weight: 600; letter-spacing: .18em; display: block; }
.brand small { display: block; font-size: 8px; margin-top: 5px; letter-spacing: .25em; }
.is-dark .brand img { filter: invert(1); }
.desktop-nav { display: flex; align-items: center; gap: 36px; margin-left: auto; font-size: 13px; }
.desktop-nav a { position: relative; padding: 14px 0; }
.desktop-nav a::after { content: ""; position: absolute; height: 1px; bottom: 6px; left: 0; right: 0; background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform .25s var(--ease); }
.desktop-nav a:hover::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 8px; }
.header-cta { min-height: 46px; display: inline-flex; gap: 28px; align-items: center; padding: 0 18px; background: var(--ink); color: var(--paper); border-radius: 4px; font-size: 13px; }
.header-cta svg { width: 17px; height: 17px; }
.is-dark .header-cta { background: var(--paper); color: var(--ink); }
.header-cta, .primary-button { transition: background .2s, box-shadow .2s; }
.header-cta:hover, .primary-button:hover { background: #354047; box-shadow: 0 4px 14px #171b1d16; }
.is-dark .header-cta:hover { background: #dce7f2; }
.menu-toggle { display: none; background: transparent; width: 44px; height: 44px; padding: 12px; }
.menu-toggle span { display: block; height: 1px; width: 20px; background: currentColor; transition: transform .2s; }
.menu-toggle span + span { margin-top: 6px; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span + span { transform: translateY(-3.5px) rotate(-45deg); }
.mobile-nav { position: absolute; top: 100%; left: 0; right: 0; padding: 14px var(--gutter) 24px; background: var(--paper); color: var(--ink); box-shadow: 0 18px 22px #171b1d12; }
.mobile-nav a, .mobile-nav button { display: block; width: 100%; padding: 18px 0; text-align: left; background: transparent; font-size: 20px; }
.hero { height: 170svh; min-height: 1100px; background: var(--paper); --film-inset: var(--gutter); --film-top: 42%; --film-bottom: 58px; --film-corner: 24px; --heading-opacity: 1; --heading-offset: 0px; --caption-opacity: 0; }
.hero-stage { position: sticky; top: 0; height: 100svh; min-height: 650px; isolation: isolate; }
.hero-heading { position: absolute; left: var(--gutter); right: var(--gutter); top: clamp(136px, 15.5vh, 180px); opacity: var(--heading-opacity); transform: translateY(var(--heading-offset)); }
.hero h1 { font-size: clamp(58px, 7.8vw, 136px); line-height: 1.18; font-weight: 550; letter-spacing: -.065em; white-space: nowrap; }
.hero-intro { display: flex; align-items: center; justify-content: space-between; margin-top: 24px; }
.hero-intro p { font-size: 16px; color: var(--muted); }
.text-cta { display: inline-flex; align-items: center; gap: 48px; background: transparent; padding: 10px 0 10px 14px; font-size: 15px; }
.text-cta svg { transition: transform .2s; }
.text-cta:hover svg { transform: translateX(4px); }
.hero-film { position: absolute; z-index: 2; left: var(--film-inset); right: var(--film-inset); top: var(--film-top); bottom: var(--film-bottom); background: var(--ink); overflow: clip; clip-path: polygon(var(--film-corner) 0, calc(100% - var(--film-corner)) 0, 100% var(--film-corner), 100% calc(100% - var(--film-corner)), calc(100% - var(--film-corner)) 100%, var(--film-corner) 100%, 0 calc(100% - var(--film-corner)), 0 var(--film-corner)); }
.hero-poster, .hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 48%; }
.hero-video { opacity: 0; transition: opacity .5s; }
.hero-video.is-playing { opacity: 1; }
.film-gradient { position: absolute; inset: 0; pointer-events: none; background: linear-gradient(180deg, #0000 50%, #10151866); }
.film-caption { position: absolute; left: var(--gutter); bottom: 148px; color: white; opacity: var(--caption-opacity); pointer-events: none; text-shadow: 0 2px 28px #0005; }
.film-caption p { font-size: 14px; margin-bottom: 24px; }
.film-caption h2 { font-size: clamp(40px, 5vw, 80px); line-height: 1.2; font-weight: 500; letter-spacing: -.05em; }
.film-controls { position: absolute; display: flex; justify-content: flex-end; align-items: center; bottom: 24px; left: 28px; right: 28px; color: #fff; }
.motion-toggle { min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 0 13px; background: #171b1d66; border-radius: 4px; color: white; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid #ffffff45; }
.motion-label { font-size: 11px; }
.motion-symbol { width: 9px; height: 11px; border-left: 2px solid currentColor; border-right: 2px solid currentColor; }
.motion-toggle[aria-pressed="true"] .motion-symbol { border: 1px solid currentColor; width: 10px; height: 10px; }
.hero-footnote { position: absolute; bottom: 17px; left: var(--gutter); right: var(--gutter); display: flex; justify-content: flex-end; gap: 20px; font-size: 11px; color: var(--muted); opacity: var(--heading-opacity); }
.hero-footnote a { display: inline-flex; align-items: center; gap: 14px; }
.hero-footnote svg { width: 16px; height: 16px; }
.worlds-section { padding: 120px var(--gutter) 64px; color: var(--paper); background: var(--ink); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 60px; }
.section-heading h2 { font-size: clamp(32px, 3.4vw, 52px); font-weight: 500; letter-spacing: -.035em; }
.world-grid { display: grid; grid-template-columns: 1.12fr 1fr; gap: 38px 5vw; align-items: start; }
.world-card-tall { grid-row: span 2; display: grid; grid-template-rows: minmax(0, 1fr) auto; align-self: stretch; min-height: 0; }
.world-art { display: block; position: relative; background: #27313a; padding: 0; width: 100%; aspect-ratio: 2.05; overflow: clip; text-align: left; }
.world-art img { width: 100%; height: 100%; object-fit: cover; transition: transform .85s var(--ease); }
.world-card-tall .world-art { aspect-ratio: auto; min-height: 0; }
.world-card-tall .world-art img { position: absolute; inset: 0; object-position: 58% center; }
.world-expand { position: absolute; right: 16px; top: 16px; width: 40px; height: 40px; display: grid; place-items: center; background: #f3f4f2ed; color: var(--ink); border-radius: 50%; transition: transform .25s, background .25s; }
.world-expand svg { width: 18px; height: 18px; fill: currentColor; stroke: none; }
.world-art:hover .world-expand { transform: scale(1.08); background: white; }
.world-caption { margin-top: 14px; text-align: right; }
.world-caption p { color: #a1aaaf; font-size: 12px; }
.about-section { display: grid; grid-template-columns: 1fr 1.6fr; gap: 10vw; padding: 140px var(--gutter) 150px; align-items: center; }
.about-sign { display: flex; flex-direction: column; align-items: center; gap: 34px; }
.about-sign img { width: clamp(100px, 14vw, 205px); height: auto; }
.about-sign span { font-size: 12px; color: var(--muted); letter-spacing: .14em; }
.about-copy h2 { font-size: clamp(32px, 3.7vw, 56px); font-weight: 500; line-height: 1.4; letter-spacing: -.04em; }
.about-copy > p { margin-top: 32px; font-size: 15px; line-height: 1.9; color: var(--muted); }
.creation-path { display: flex; align-items: center; gap: clamp(6px, 1.3vw, 16px); margin-top: 44px; font-size: clamp(13px, 1.5vw, 20px); }
.creation-path span { white-space: nowrap; }
.creation-path i { flex: 1; min-width: 8px; height: 1px; background: #bfc7cb; position: relative; }
.creation-path i::after { content: ""; width: 5px; height: 5px; border-right: 1px solid #9ba5ab; border-top: 1px solid #9ba5ab; transform: rotate(45deg); position: absolute; right: 0; top: -2px; }
.begin-section { background: var(--blue); padding: 104px var(--gutter) 0; overflow: clip; }
.begin-copy { display: flex; align-items: end; justify-content: space-between; gap: 48px; }
.begin-copy h2 { font-size: clamp(48px, 6.7vw, 106px); letter-spacing: -.055em; line-height: 1.17; font-weight: 500; }
.begin-action { padding-bottom: 7px; }
.primary-button { display: inline-flex; align-items: center; justify-content: space-between; gap: 80px; min-height: 56px; padding: 0 22px; border-radius: 4px; background: var(--ink); color: white; font-size: 15px; }
.brand-wall { font-family: "Helvetica Neue", Arial, sans-serif; font-size: clamp(68px, 15.4vw, 260px); letter-spacing: -.075em; line-height: 1; font-weight: 600; white-space: nowrap; padding: 94px 0 26px; margin-left: -.012em; }
.site-footer { padding: 40px var(--gutter) 32px; background: var(--blue); border-top: 1px solid #171b1d24; }
.footer-top { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.momentstream { font-size: 21px; letter-spacing: -.04em; font-weight: 500; }
.momentstream span { font-size: 12px; letter-spacing: .04em; padding-left: 18px; font-weight: 400; }
.back-top { font-size: 12px; display: flex; align-items: center; gap: 16px; min-height: 44px; }
.back-top svg { width: 16px; height: 16px; }
.footer-bottom { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 32px; font-size: 10px; line-height: 1.8; color: #526373; }
.footer-bottom a:hover { text-decoration: underline; text-underline-offset: 3px; }
.world-dialog { --dialog-edge: 32px; --dialog-footer: 92px; --scene-ratio: 1.77777778; margin: auto; padding: 0; width: min(1100px, calc(100vw - 2 * var(--dialog-edge)), max(280px, calc((100svh - 2 * var(--dialog-edge) - var(--dialog-footer)) * var(--scene-ratio)))); max-width: none; max-height: calc(100svh - 2 * var(--dialog-edge)); border: 0; color: var(--paper); background: var(--ink); overflow: auto; scrollbar-width: thin; overscroll-behavior: contain; }
dialog::backdrop { background: #10171ed4; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.dialog-close { width: 44px; height: 44px; display: grid; place-items: center; background: #ffffff16; color: inherit; border-radius: 50%; z-index: 2; flex-shrink: 0; }
.dialog-close:hover { background: #ffffff35; }
.world-close { position: absolute; right: 20px; top: 20px; background: #171b1d80; border: 1px solid #ffffff40; }
.dialog-scene { position: relative; aspect-ratio: 16 / 9; isolation: isolate; }
.dialog-scene img, .world-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.dialog-scene img { z-index: 1; }
.dialog-scene.has-playback img { opacity: 0; pointer-events: none; transition: opacity .2s ease; }
.world-video { object-fit: contain; }
.world-play { position: absolute; z-index: 2; left: 50%; top: 50%; translate: -50% -50%; width: 68px; height: 68px; padding: 0; display: grid; place-items: center; border: 1px solid #ffffff75; border-radius: 50%; background: #171b1d55; color: white; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: 0 4px 24px #0002; transition: background .2s, transform .2s; }
.world-play svg { width: 26px; height: 26px; fill: currentColor; stroke: none; }
.world-play:hover:not(:disabled) { background: #171b1d85; transform: scale(1.06); }
.world-play:focus-visible { outline-color: white; }
.is-loading .world-play svg { opacity: 0; }
.is-loading .world-play::after { content: ""; position: absolute; width: 24px; height: 24px; border: 2px solid #ffffff40; border-top-color: white; border-radius: 50%; animation: world-loading .8s linear infinite; }
.world-playback-status { position: absolute; z-index: 2; left: 50%; bottom: 16px; translate: -50% 0; width: max-content; max-width: calc(100% - 32px); padding: 8px 12px; border-radius: 4px; background: #171b1dcc; color: white; font-size: 12px; text-align: center; }
.world-playback-status:empty { display: none; }
@keyframes world-loading { to { transform: rotate(360deg); } }
.world-dialog-footer { min-height: var(--dialog-footer); padding: 24px; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.world-dialog h2 { font-size: 22px; font-weight: 400; white-space: nowrap; }
.dialog-navigation { display: flex; align-items: center; gap: 20px; flex-shrink: 0; }
.dialog-navigation button { width: 44px; height: 44px; display: grid; place-items: center; border: 1px solid #ffffff35; background: transparent; border-radius: 50%; }
.dialog-navigation button:hover { background: #ffffff16; }
.dialog-navigation span { font-size: 12px; color: #b4bdc2; }
.no-script { text-align: center; padding: 16px; background: var(--blue); font-size: 13px; }
@media (hover: hover) and (pointer: fine) { .world-art:hover img { transform: scale(1.035); } }
@media (min-width: 1800px) { .hero-heading { max-width: 1520px; margin: auto; } }
@media (max-height: 740px) and (min-width: 761px) { .hero-heading { top: 112px; } .hero h1 { font-size: min(7vw, 96px); } .hero-intro { margin-top: 12px; } .hero { --film-top: 45%; } }
@media (max-width: 1000px) {
  .site-header { height: 84px; gap: 28px; }
  .desktop-nav { gap: 24px; }
  .hero h1 { font-size: 8vw; }
  .hero-heading { top: 140px; }
  .hero { --film-top: 39%; }
  .about-section { gap: 7vw; }
  .about-copy > p { font-size: 14px; }
  .desktop-break { display: none; }
  .brand-wall { font-size: 15vw; }
}
@media (max-width: 760px) {
  :root { --gutter: 24px; }
  html { scroll-padding-top: 92px; }
  .site-header { height: 80px; gap: 12px; }
  .brand { gap: 9px; }
  .brand img { width: 22px; height: 31px; }
  .brand strong { font-size: 16px; }
  .brand small { font-size: 6px; letter-spacing: .22em; margin-top: 4px; }
  .desktop-nav { display: none; }
  .header-actions { margin-left: auto; gap: 6px; }
  .header-cta { font-size: 12px; padding: 0 13px; min-height: 44px; }
  .header-cta svg { display: none; }
  .menu-toggle { display: block; }
  .hero { height: auto; min-height: 0; padding: 126px var(--gutter) 30px; }
  .hero-stage { position: relative; top: auto; min-height: 0; height: auto; }
  .hero-heading { position: static; opacity: 1; transform: none; }
  .hero h1 { font-size: clamp(36px, 7.6vw, 58px); line-height: 1.25; letter-spacing: -.07em; }
  .hero-intro { margin-top: 20px; gap: 12px; }
  .hero-intro p { font-size: 13px; line-height: 1.8; }
  .hero-intro .text-cta { display: none; }
  .hero-film { position: relative; inset: auto; aspect-ratio: .93; margin-top: 34px; clip-path: polygon(14px 0, calc(100% - 14px) 0, 100% 14px, 100% calc(100% - 14px), calc(100% - 14px) 100%, 14px 100%, 0 calc(100% - 14px), 0 14px); }
  .hero-video, .hero-poster { object-position: 57% center; }
  .film-caption { display: none; }
  .film-controls { bottom: 16px; left: 16px; right: 16px; gap: 12px; }
  .motion-toggle { padding: 0; flex-shrink: 0; }
  .motion-label { display: none; }
  .hero-footnote { display: none; }
  .hero-footnote a { display: none; }
  .worlds-section { padding: 72px var(--gutter) 32px; }
  .section-heading { display: block; margin-bottom: 32px; }
  .section-heading h2 { font-size: 30px; }
  .world-grid { display: block; }
  .world-card-tall { display: block; }
  .world-card + .world-card { margin-top: 38px; }
  .world-card-tall .world-art { aspect-ratio: 1.08; }
  .world-art { aspect-ratio: 1.55; }
  .world-expand { width: 36px; height: 36px; right: 14px; top: 14px; }
  .world-caption { margin-top: 14px; }
  .world-caption p { font-size: 11px; }
  .about-section { display: block; padding: 72px var(--gutter) 76px; }
  .about-sign { flex-direction: row; justify-content: start; gap: 16px; margin-bottom: 36px; }
  .about-sign img { width: 32px; }
  .about-sign span { font-size: 11px; }
  .about-copy h2 { font-size: 33px; line-height: 1.4; }
  .about-copy > p { margin-top: 24px; font-size: 13px; }
  .creation-path { margin-top: 30px; }
  .begin-section { padding: 64px var(--gutter) 0; }
  .begin-copy { display: block; }
  .begin-copy h2 { font-size: 46px; }
  .begin-action { margin-top: 30px; min-width: 0; }
  .primary-button { width: 100%; min-height: 54px; font-size: 14px; }
  .brand-wall { padding: 58px 0 20px; font-size: 14vw; }
  .site-footer { padding: 24px var(--gutter); }
  .momentstream { font-size: 17px; }
  .momentstream span { display: block; padding: 6px 0 0; font-size: 10px; }
  .back-top { font-size: 10px; gap: 10px; }
  .footer-bottom { display: flex; flex-direction: column; gap: 7px; margin-top: 24px; font-size: 9px; }
  .world-dialog { --dialog-edge: 12px; --dialog-footer: 76px; }
  .world-dialog-footer { padding: 16px; gap: 12px; }
  .world-dialog h2 { font-size: 18px; }
  .world-play { width: 56px; height: 56px; }
  .dialog-navigation { gap: 12px; }
  .world-close { top: 10px; right: 10px; }
}
@media (max-width: 359px) {
  :root { --gutter: 18px; }
  .header-actions { gap: 2px; }
  .header-cta { padding: 0 10px; }
  .hero h1 { font-size: 32px; }
  .hero-intro p { font-size: 12px; }
  .about-copy h2 { font-size: 29px; }
}
.motion-paused *, .motion-paused *::before, .motion-paused *::after { animation: none !important; transition: none !important; }
html:has(.motion-paused) { scroll-behavior: auto; }
.motion-paused .world-art:hover img { transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .world-art:hover img { transform: none; }
}
@media (prefers-reduced-motion: reduce) and (min-width: 761px) {
  .hero { height: 100svh; min-height: 650px; }
}