/* Generated by tools/scope_css.py from clone.css + special-site.css. Do not edit. */
/* Special layout styles (scoped to .special by tools/scope_css.py). Inter throughout. */
html:has(.special) { --fg: #fff; --muted: rgba(255,255,255,.62); --line: rgba(255,255,255,.14); --chip: rgba(255,255,255,.12); --col: 676px; --wide: 1143px; }
.special, .special * { box-sizing: border-box; }
html:has(.special) { background: #000; color: var(--fg); -webkit-font-smoothing: antialiased; scroll-behavior: auto; }
body:has(.special) { margin: 0; font: 400 17px/28px Inter, system-ui, sans-serif; letter-spacing: -0.01em; }
.special a { color: inherit; }
.special .sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }/* fixed scene */
.special .scene { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.special .scene canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.special .ambient { position: absolute; inset: -152px 0 0 0; z-index: 0; pointer-events: none; mix-blend-mode: plus-lighter; opacity: 0;
  background: radial-gradient(ellipse farthest-corner at center, transparent 0%, color-mix(in srgb, #23435f 6.25%, transparent) 25%, color-mix(in srgb, #23435f 25%, transparent) 50%, color-mix(in srgb, #23435f 56.25%, transparent) 75%, #23435f 100%);
  animation: ambient-in 3.4s ease-out both; }
@keyframes ambient-in { to { opacity: .55; } }
.special .chrome { position: fixed; inset: 0; z-index: 20; pointer-events: none; opacity: var(--copy, 1); }
.special .label { position: absolute; top: 50%; margin: 0; transform: translateY(-50%); font-size: 64px; line-height: 64px; font-weight: 500; letter-spacing: -0.03em; color: #fafafa; user-select: none;
  text-shadow: rgba(0,0,0,.65) 0 2px 6px, rgba(0,0,0,.45) 0 0 1.25rem; }
.special .label.left { left: 2rem; }
.special .label.right { right: 2rem; }
.special .label span { display: inline-block; opacity: 0; transform: translateX(var(--shift, -44px)); animation: letter 1s cubic-bezier(.22,1,.36,1) var(--d) forwards; }
.special .label.right span { --shift: 44px; }
@keyframes letter { to { opacity: 1; transform: none; } }/* flow */
.special .sp-main { position: relative; z-index: 10; }
.special .hero-space { height: 100vh; min-height: 640px; margin-top: 152px; }
.special article { display: flex; flex-direction: column; align-items: center; padding-bottom: 120px; }
.special article > * { width: var(--col); max-width: calc(100% - 48px); }
.special .page-title { width: 909px; margin: 120px 0 120px; text-align: center; font-size: 44px; line-height: 52px; font-weight: 500; letter-spacing: -0.025em; }
.special .film { width: var(--wide); aspect-ratio: 16/9; position: relative; background: #0d0d0e; margin-bottom: 120px; overflow: hidden; }
.special .film iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.special .film-play { position: absolute; inset: 0; margin: auto; width: 80px; height: 80px; background: none; border: 0; cursor: pointer; z-index: 2; }
.special .film-bar { position: absolute; left: 0; right: 0; bottom: 0; height: 48px; display: flex; align-items: center; gap: 10px; padding: 0 16px; font-size: 13px; font-variant-numeric: tabular-nums; z-index: 2; }
.special .film-bar .grow { flex: 1; }
.special .film-bar .sep { opacity: .6; }
.special .film.playing .film-play, .special .film.playing .film-bar { display: none; }
.special .sec-title { margin: 120px 0 24px; font-size: 30px; line-height: 39.6px; font-weight: 500; letter-spacing: -0.01em; }
.special :is(.prose, article > p, article > ul, article > ol) { margin: 0 0 24px; }
.special :is(:is(.prose, article > p, article > ul, article > ol).italic, article > p:has(> em:first-child)) { padding-bottom: 24px; border-bottom: 1px solid var(--line); margin-bottom: 24px; }
.special :is(.prose, article > p, article > ul, article > ol) a, .special .prose-list a, .special figcaption a { text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.special :is(.prose, article > p, article > ul, article > ol) code { font-size: 15px; }
.special .prose-list { margin: 0 0 24px; padding-left: 22px; }
.special sup { font-size: 11px; line-height: 0; }/* tabs */
.special .tabs { width: 100%; display: flex; flex-direction: column; align-items: center; margin: 0; padding-top: 8px; }
.special .tabbar { display: flex; gap: 8px; justify-content: center; margin-bottom: 32px; max-width: 100%; overflow-x: auto; padding: 4px; }
.special .tab { height: 40px; padding: 12px 16px; border-radius: 9999px; font-size: 14px; line-height: 16px; font-weight: 500; white-space: nowrap; cursor: pointer; position: relative; overflow: hidden; transition: background .25s; }
.special .tab:hover { background: rgba(255,255,255,.06); }
.special .tab::before { content: ""; position: absolute; inset: 0; background: rgba(255,255,255,.08); transform: scaleX(0); transform-origin: left; }
.special .panels { width: var(--col); max-width: calc(100% - 48px); }
.special .tabpanel { display: none; animation: fade .45s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.special .sr[type=radio] { position: absolute; opacity: 0; pointer-events: none; }
.special .tabs:not(:has(.sr:checked)) .tabpanel[data-i="0"] { display: block; }
.special .tabs .tab.active { background: var(--chip); }
.special .tabs .tab.active.timing::before { animation: countdown var(--dur, 8s) linear forwards; }
@keyframes countdown { to { transform: scaleX(1); } }
.special .panel-fig { margin: 0; }
.special .fig-card { padding: 20px 20px 12px; border: 1px solid rgba(255,255,255,.12); border-radius: 8px; background: rgba(255,255,255,.02); }
.special .fig-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.special .fig-title { font-size: 17px; font-weight: 500; margin-right: auto; }
.special .fig-toggle { display: inline-flex; align-items: center; gap: 4px; height: 28px; padding: 0 10px; border-radius: 9999px; border: 1px solid var(--line); font-size: 13px; }
.special .fig-dl { opacity: .7; display: flex; }
.special .fig-legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13px; margin-bottom: 8px; }
.special .fig-legend .lg { display: inline-flex; align-items: center; gap: 6px; }
.special .fig-legend i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.special .fig-plot svg { display: block; width: 100%; height: auto; overflow: visible; font-family: Inter, sans-serif; }
.special figcaption { margin-top: 24px; font-size: 14px; line-height: 23px; color: var(--fg); padding: 0 21px; }
.special .media { position: relative; aspect-ratio: 16/9; background: #0b0b0b; border-radius: 4px; overflow: hidden; }
.special .media iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.special .media.imgs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; aspect-ratio: auto; background: none; }
.special .media.imgs img { width: 100%; display: block; }
.special .media.placeholder { display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 14px; flex-direction: column; gap: 8px; }
.special .solo { margin: 0; }/* quotes */
.special .quote { width: 859px; margin: 0; align-self: center; box-sizing: border-box; max-height: none; padding: 24px 28px; background: rgba(255,255,255,.08); border-radius: 6px; }
.special .quote blockquote { margin: 0; font-size: 18px; line-height: 24px; font-weight: 500; letter-spacing: -0.025em; }
.special .quote figcaption { padding: 0; margin-top: 16px; font-size: 14px; color: var(--muted); }/* shape cues: empty runway where the particles take a shape */
.special .shape-cue { width: 576px; height: 720px; margin: 0; }/* tables */
.special :is(.table-title, article > h3) { width: var(--wide); margin: 105px 0 40px; font-size: 17px; font-weight: 400; }
.special :is(.tablewrap, article > .table-scroll) { width: var(--wide); overflow-x: auto; }
.special table { width: 100%; border-collapse: collapse; font-size: 14px; line-height: 23px; letter-spacing: -0.01em; }
.special th, .special td { text-align: left; padding: 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.special th { font-weight: 600; }
.special th b, .special th strong { font-weight: 600; }
.special td:first-child, .special th:first-child { padding-left: 0; }/* footnotes */
.special .footnotes { width: calc(100% - 64px); max-width: 1376px; background: var(--chip); border-radius: 6px; padding: 64px 0; margin-top: 120px; display: flex; justify-content: center; }
.special .foot-inner { width: var(--col); max-width: calc(100% - 48px); font-size: 14px; line-height: 23px; }
.special .year { display: inline-block; padding: 2px 12px; border-radius: 9999px; background: var(--chip); font-size: 13px; margin-bottom: 32px; }
.special .foot-title { font-size: 12px; letter-spacing: .08em; font-weight: 500; margin: 0 0 16px; text-transform: uppercase; }
.special .foot-inner ol, .special .foot-inner ul { padding-left: 18px; }
.special .foot-inner li { margin-bottom: 16px; }/* reveal on scroll */
.special .reveal { opacity: 0; transform: translateY(16px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
.special .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
.special .reveal { opacity: 1; transform: none; transition: none; }
.special .label span { animation: none; opacity: 1; transform: none; } }

@media (max-width: 760px) {
.special .label { font-size: 40px; line-height: 40px; }
.special .label.left { left: 16px; }
.special .label.right { right: 16px; }
.special .page-title { font-size: 32px; line-height: 38px; margin: 80px 0; }
.special .film, .special .quote, .special :is(.tablewrap, article > .table-scroll), .special :is(.table-title, article > h3) { width: calc(100% - 32px); }
.special .tabbar { justify-content: flex-start; width: 100%; }
.special .footnotes { width: calc(100% - 16px); }
}/* spacing measured against the source block positions (offsets.py) */
.special :is(.prose, article > p, article > ul, article > ol) + .tabs { margin-top: 56px; }
.special :is(.prose, article > p, article > ul, article > ol) + .solo { margin-top: 40px; }
.special .sec-title { margin-top: 68px; }
.special [data-span] + .sec-title { margin-top: 0; }
.special :is(.prose, article > p, article > ul, article > ol) + .quote { margin-top: 56px; }
.special :is(.prose, article > p, article > ul, article > ol) + .shape-cue { margin-top: 112px; }
.special [data-span] + :is(.table-title, article > h3) { margin-top: 0; }
.special :is(.tablewrap, article > .table-scroll) + :is(.prose, article > p, article > ul, article > ol) { margin-top: 88px; width: var(--wide); font-size: 14px; line-height: 23px; }
.special .quote-row { width: var(--wide); display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-self: center; }
.special .quote-row .quote { width: auto; }

/* desktop: block positions and heights measured on the source at 1440 (research/fit.json, data-span) */
@media (min-width: 761px) {
.special article > [data-y][style*="--mt"] { margin-top: var(--mt); }
.special article > [data-span] { min-height: var(--span); }
}/* hero controls (hero controls) */
.special .hero-space { position: relative; }
.special .drag-surface { position: absolute; inset: -152px 0 0 0; z-index: 1; cursor: grab; touch-action: pan-y pinch-zoom; background: none; border: 0; padding: 0; }
.special .drag-surface[data-dragging="true"] { cursor: grabbing; }
.special .replay { position: fixed; right: .75rem; bottom: .75rem; z-index: 30; width: 2.25rem; height: 2.25rem; display: grid; place-items: center; border: 0; border-radius: 9999px; padding: 0;
  background: rgba(255,255,255,.15); color: rgba(255,255,255,.8); cursor: pointer; transition: color .15s, background-color .15s; opacity: var(--copy, 1); }
.special .replay:hover { background: rgba(255,255,255,.25); color: rgba(255,255,255,.9); }
@media (prefers-reduced-motion: reduce) {
.special .ambient { animation: none; opacity: .55; } }


/* Special layout inside the site: the site header and footer on black (dark-theme tokens, site.css:4,
   interface.css:4,345), the body black so the transparent galaxy canvas shows. */
html:has(.special) { --bg: #000; --ink: #fafafa; --muted: #b1b1b1; --line: #fff3; --subtle: #ffffff1f; --surface: #252525; --focus: #a4c9ff;
  --ink-60: rgba(255,255,255,.6); --ink-44: rgba(255,255,255,.44); --ink-12: rgba(255,255,255,.12); --ink-4: rgba(255,255,255,.06); color-scheme: dark; }
body:has(.special) { background: #000; color: #fafafa; }
html:has(.special) .header { position: fixed; inset: var(--locale-header-offset, 0px) 0 auto 0; z-index: 60; background: linear-gradient(#000 0%, rgba(0,0,0,0) 100%); color: #fafafa; }
/* Without JavaScript, keep navigation in flow below the language banner. */
html:has(.special):has(.locale-banner:not([hidden])):not(.locale-positioned) .header { position: sticky; top: 0; }
html:has(.special):has(.locale-banner:not([hidden])):not(.locale-positioned) .hero-space { margin-top: 0; }
html:has(.special) .footer { position: relative; z-index: 10; background: #000; color: #fafafa; }
/* The same 12-column reading measure as ordinary articles, including intermediate widths.
   The article alone is a query container; the fixed galaxy remains outside it. */
.special .sp-main > article { --col: 100cqi; --wide: 100cqi; width: 100%; max-width: 90rem; margin-inline: auto; padding-inline: var(--gutter); container-type: inline-size; }
.special .sp-main > article > * { min-width: 0; max-width: 100%; }
.special .sp-main > article > .prose-flow { width: 100%; max-width: 100%; display: flex; flex-direction: column; align-items: center; }
.special .prose-flow > p, .special .prose-flow > ul, .special .prose-flow > ol { width: var(--col); max-width: 100%; margin: 0 0 24px; }
/* The outer composition owns the gutter; its panels and controls use it once. */
.special .sp-main > article > .tabs { max-width: none; }
.special .panels { min-width: 0; max-width: 100%; }
.special .tabbar { width: max-content; max-width: 100%; justify-content: flex-start; overscroll-behavior-x: contain; scroll-padding-inline: .25rem; }
.special .tab { flex: 0 0 auto; }
/* Text and figures remain available if the tab enhancement never initializes. */
.special .tabs:not([data-tabs-ready]) .tabbar, .special .tabs:not([data-tabs-ready]) > input.sr { display: none; }
.special .tabs:not([data-tabs-ready]) .tabpanel { display: block; }
.special .tabs:not([data-tabs-ready]) .tabpanel + .tabpanel { margin-top: 2rem; }
.special .tabs:has(input.sr:focus-visible) .tab.active { outline: 2px solid var(--focus); outline-offset: 2px; }
.special .page-title { width: 100%; font-size: var(--type-h2-size); line-height: var(--type-h2-line); letter-spacing: var(--type-h2-track); }
.special .sec-title { font-size: var(--type-h3-size); line-height: var(--type-h3-line); letter-spacing: var(--type-h3-track); }
.special .film, .special .table-title, .special .sp-main > article > h3, .special article > .table-scroll { width: var(--wide); }
.special .film { border-radius: .38rem; }
.special .footnotes { width: 100%; }
@container (min-width: 44rem) {
  .special .sp-main > article > * { --col: calc((100cqi - var(--grid-gap)) / 2); --wide: calc((100cqi * 5 - var(--grid-gap)) / 6); }
  .special .page-title { width: var(--wide); }
}
@container (min-width: 60rem) {
  .special .page-title { width: calc((100cqi * 2 - var(--grid-gap)) / 3); }
}
.special :is(.page-title, .sec-title, .fig-title, .quote, .sp-signup) { overflow-wrap: anywhere; }
.special .label { font-size: clamp(2rem, 5vw, 4rem); line-height: 1; }
.special .label.left { left: var(--gutter); }
.special .label.right { right: var(--gutter); }
.special .fig-head { align-items: flex-start; flex-wrap: wrap; }
.special .fig-plot { max-width: 100%; overflow-x: auto; overscroll-behavior-x: contain; }
.special .fig-plot svg.chart { min-width: 39.5625rem; }
.special .quote-row .quote { min-width: 0; max-width: 100%; }
/* local films: a poster with a play button, the video loads on click */
.special .film .film-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; background: #0d0d0e; }
.sp-js .special .film:not(.playing) .film-video { pointer-events: none; }
.sp-js .special .film.playback-failed .film-video { pointer-events: auto; }
.special .sp-film-play { display: none; }
.sp-js .special .sp-film-play { display: block; position: absolute; inset: 0; margin: auto; width: 80px; height: 80px; background: none; border: 0; cursor: pointer; z-index: 2; }
.special .film-bar { display: none; } .sp-js .special .film-bar { display: flex; }
.special .film.playing .sp-film-play, .special .film.playing .film-bar { display: none; }
.special .media video, .special .media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.special .fig-plot img.chart { display: block; width: 100%; height: auto; }
.special .sp-signup { display: flex; flex-direction: column; align-items: center; gap: 1rem; margin-block: 4rem; }
.special .sp-signup > * { width: 100%; max-width: 100%; }
.special .sp-signup .sec-title { margin: 0 0 .5rem; }
.special .sp-signup > p { margin: 0; }
.special .waitlist-row input { background: #111; border-color: #ffffff3d; color: #fafafa; }
.special .waitlist .waitlist-submit { background: #fafafa; color: #111; }
@media (max-width: 47.999rem) {
  .special .hero-space { height: calc(100svh - var(--header)); min-height: 26rem; margin-top: var(--header); }
  .special .ambient, .special .drag-surface { top: calc(-1 * var(--header)); }
  .special .sp-main > article { padding-bottom: 5rem; }
  .special .sp-main > article > [data-span] { min-height: 0; }
  .special .page-title { margin-block: 5rem; }
  .special .film { margin-bottom: 5rem; }
  .special .quote-row { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .special .sp-main > article > .quote { width: 100%; }
  .special .quote { padding: 1.5rem; }
  .special .fig-card { padding: 1rem 1rem .75rem; }
  .special figcaption { padding-inline: 0; }
  .special .shape-cue { height: clamp(18rem, 70svh, 32rem); }
  .special .tab { min-height: 2.75rem; height: auto; display: inline-flex; align-items: center; padding-block: .75rem; }
  .special .sp-signup { margin-block: 3rem; }
  html:has(.special) .header { background: #000000e8; }
}
@media (max-height: 30rem) and (max-width: 74.999rem) {
  .special .hero-space { height: calc(100svh - var(--header)); min-height: 0; margin-top: var(--header); }
  .special .ambient, .special .drag-surface { top: calc(-1 * var(--header)); }
  .special .sp-main > article > [data-span] { min-height: 0; }
}
/* Markdown tables and the paragraph after them: the clone's measured gaps (research/fit.json: 105 px, 104 px) */
@media (min-width: 761px) { .special article > .table-scroll + h3 { margin-top: 105px; } .special article > .table-scroll + p { margin-top: 104px; } }
/* the site's article table frame (site.css .table-scroll) is not part of this layout */
.special article > .table-scroll { border: 0; border-radius: 0; margin: 0; }
/* Film affordance: 54px on phones, 80px from the 768px viewport breakpoint. */
.special .sp-film-play .icon { width: 54px; height: 54px; color: #fff; opacity: .9; }
@media (min-width: 48rem) { .special .sp-film-play .icon { width: 80px; height: 80px; } }
.special .film-bar .icon { width: 16px; height: 16px; color: #fff; }
/* without JavaScript nothing waits to be revealed */
:root:not(.sp-js) .special .reveal { opacity: 1; transform: none; }
.special .wechat-contact { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid currentColor; text-align: left; }
.special .wechat-contact h3 { font-size: 1.25rem; margin: 0 0 .75rem; }
.special .wechat-contact p { font-size: 1rem; line-height: 1.6; }
.wechat-contact-row { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
.wechat-contact-row code { font-size: 1.25rem; user-select: all; }
.wechat-contact-row button { font: inherit; color: inherit; background: transparent; border: 1px solid currentColor; border-radius: 2rem; min-height: 2.75rem; padding: .65rem 1rem; cursor: pointer; }
.wechat-contact-row button:focus-visible { outline: 2px solid currentColor; outline-offset: 4px; }
.wechat-copy-status:empty { display: none; }