:root {
  --void: #05070a;
  --carbon: #0b1015;
  --mineral: #17212a;
  --mineral-2: #23313c;
  --signal: #6de7f2;
  --spectral: #5d9fff;
  --paper: #edf6f8;
  --muted: #a1b0b9;
  --dim: #81939f;
  --line: rgba(172, 209, 220, 0.18);
  --line-strong: rgba(172, 224, 235, 0.34);
  --display: "Space Grotesk", "Avenir Next", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
  --shell: min(1180px, calc(100vw - 96px));
  --header-height: 74px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--void); }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--paper);
  background:
    radial-gradient(circle at 78% -8%, rgba(46, 87, 112, 0.24), transparent 34%),
    linear-gradient(180deg, #070a0d 0%, var(--void) 42%, #070a0e 100%);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  opacity: 0.035;
  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='.88' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.72'/%3E%3C/svg%3E");
}
::selection { color: var(--void); background: var(--signal); }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 4px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: var(--void);
  background: var(--signal);
  transform: translateY(-160%);
  transition: transform 180ms ease;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  z-index: 30;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  padding: 0 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(180deg, rgba(5, 7, 10, 0.94), rgba(5, 7, 10, 0));
  transition: background 220ms ease, border-color 220ms ease;
}
.site-header.is-scrolled {
  background: rgba(5, 7, 10, 0.92);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--paper);
  text-decoration: none;
  font-family: var(--display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand-orbit {
  position: relative;
  display: inline-block;
  width: 27px;
  height: 27px;
  border: 1px solid var(--signal);
  border-radius: 50%;
}
.brand-orbit::before {
  content: "";
  position: absolute;
  inset: 7px -4px;
  border: 1px solid var(--spectral);
  border-radius: 50%;
  transform: rotate(-28deg);
}
.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a,
.language-switch {
  position: relative;
  padding: 9px 0;
  border: 0;
  color: var(--muted);
  background: transparent;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
  cursor: pointer;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 3px;
  height: 1px;
  background: var(--signal);
  transition: right 200ms ease;
}
.site-nav a:hover,
.site-nav a.is-active,
.language-switch:hover { color: var(--paper); }
.site-nav a:hover::after,
.site-nav a.is-active::after { right: 0; }
.language-switch { border-left: 1px solid var(--line); padding-left: 24px; }
.menu-toggle { display: none; }

.section-shell,
.inner-main,
.site-footer { width: var(--shell); margin: 0 auto; }
.kicker,
.section-number {
  margin: 0;
  color: var(--signal);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
}
h1, h2, h3 { font-family: var(--display); font-weight: 500; text-wrap: balance; }
h1 { margin: 0; font-size: clamp(48px, 7.3vw, 112px); line-height: 0.92; letter-spacing: -0.068em; }
h2 { margin: 0; font-size: clamp(34px, 4.6vw, 68px); line-height: 1; letter-spacing: -0.052em; }
h3 { margin: 0; font-size: clamp(21px, 2.25vw, 34px); line-height: 1.06; letter-spacing: -0.035em; }
.lede { margin: 0; max-width: 660px; color: #b7c5cd; font-size: clamp(17px, 1.8vw, 23px); line-height: 1.55; }

.spatial-stage {
  position: fixed;
  z-index: 0;
  inset: 0;
  pointer-events: none;
}
#orbit-canvas { width: 100%; height: 100%; display: block; opacity: 0.92; }
.orbit-fallback { position: absolute; width: min(50vw, 700px); aspect-ratio: 1; right: -5vw; top: 13vh; opacity: 0.38; }
.orbit-fallback span { position: absolute; inset: 12%; border: 1px solid rgba(109, 231, 242, 0.22); border-radius: 50%; transform: rotate(-22deg); }
.orbit-fallback span:nth-child(2) { inset: 24% 4%; border-color: rgba(93, 159, 255, 0.25); transform: rotate(38deg); }
.orbit-fallback span:nth-child(3) { inset: 38% 0; border-color: rgba(237, 246, 248, 0.14); transform: rotate(74deg); }
.canvas-ready .orbit-fallback { opacity: 0; }

.home-chapter { position: relative; z-index: 1; min-height: 100svh; display: flex; align-items: center; }
.hero { min-height: 100svh; }
.hero-copy { padding-top: 72px; padding-right: min(39vw, 510px); }
.hero-copy .kicker { margin-bottom: 22px; }
.hero-copy h1 { max-width: 820px; }
.hero-copy .lede { margin-top: 28px; max-width: 610px; }
.hero-index {
  position: absolute;
  left: 42px;
  right: 42px;
  bottom: 28px;
  display: flex;
  justify-content: space-between;
  color: var(--dim);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.04em;
}
.text-action {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
  color: var(--paper);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
}
.text-action svg { width: 28px; fill: none; stroke: var(--signal); stroke-width: 1.2; transition: transform 180ms ease; }
.text-action:hover svg { transform: translateX(6px); }

.chapter-rail {
  position: fixed;
  z-index: 10;
  left: 24px;
  top: 50%;
  width: 18px;
  transform: translateY(-50%);
}
.chapter-rail::before { content: ""; position: absolute; left: 3px; top: 3px; bottom: 3px; width: 1px; background: var(--line); }
.chapter-progress { position: absolute; z-index: 1; left: 2px; top: 3px; width: 3px; height: 0; background: var(--signal); box-shadow: 0 0 12px rgba(109, 231, 242, 0.5); transition: height 420ms cubic-bezier(.22,1,.36,1); }
.chapter-rail ol { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 22px; }
.chapter-rail li { position: relative; width: 8px; height: 8px; border: 1px solid var(--dim); border-radius: 50%; background: var(--void); }
.chapter-rail li span { position: absolute; left: 17px; top: 50%; width: max-content; max-width: 150px; opacity: 0; color: var(--muted); font-family: var(--mono); font-size: 9px; transform: translate(5px,-50%); transition: opacity 180ms ease, transform 180ms ease; pointer-events: none; }
.chapter-rail li.is-active { border-color: var(--signal); background: var(--signal); box-shadow: 0 0 10px rgba(109, 231, 242, 0.5); }
.chapter-rail li.is-active span,
.chapter-rail:hover li span { opacity: 1; transform: translate(0,-50%); }

.split-heading { display: grid; grid-template-columns: 130px 1fr; gap: 34px; align-items: start; }
.signal-section { padding: 120px 0; }
.signal-section h2 { max-width: 760px; }
.signal-list { margin-top: 62px; }
.signal-item { display: grid; grid-template-columns: 64px minmax(220px, 0.9fr) minmax(260px, 1fr); gap: 28px; padding: 28px 0; border-top: 1px solid var(--line); }
.signal-item:last-child { border-bottom: 1px solid var(--line); }
.signal-item .signal-index { color: var(--signal); font-family: var(--mono); font-size: 11px; }
.signal-item h3 { font-size: clamp(24px, 3vw, 42px); }
.signal-item p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.65; }

.research-section { padding: 130px 0; background: linear-gradient(90deg, rgba(5,7,10,.98) 0%, rgba(5,7,10,.85) 60%, rgba(5,7,10,.34) 100%); }
.section-intro { display: grid; grid-template-columns: 130px 1fr; gap: 34px; align-items: start; }
.section-intro p:not(.section-number) { margin: 18px 0 0; color: var(--muted); }
.featured-research { margin: 64px 0 0 164px; }
.featured-card { position: relative; display: grid; grid-template-columns: 110px 1fr 180px; gap: 26px; padding: 34px 0; border-top: 1px solid var(--line); text-decoration: none; }
.featured-card:last-child { border-bottom: 1px solid var(--line); }
.featured-card::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -1px; height: 1px; background: var(--signal); transition: right 320ms ease; }
.featured-card:hover::after { right: 0; }
.featured-year { color: var(--signal); font-family: var(--mono); font-size: 12px; font-variant-numeric: tabular-nums; }
.featured-title { margin-bottom: 13px; font-family: var(--display); font-size: clamp(25px, 3vw, 39px); line-height: 1.03; letter-spacing: -0.04em; }
.featured-copy { margin: 0; max-width: 680px; color: var(--muted); font-size: 14px; }
.featured-meta { color: #afbdc5; font-family: var(--mono); font-size: 10px; line-height: 1.7; }
.research-section > .section-shell > .text-action { margin-left: 164px; }

.trajectory-section { padding: 130px 0; }
.trajectory { position: relative; margin: 70px 0 0 164px; }
.trajectory::before { content: ""; position: absolute; top: 0; bottom: 0; left: 129px; width: 1px; background: var(--line); }
.trajectory-item { position: relative; display: grid; grid-template-columns: 105px 50px 1fr; gap: 0; min-height: 130px; }
.trajectory-period { color: var(--muted); font-family: var(--mono); font-size: 10px; font-variant-numeric: tabular-nums; }
.trajectory-axis { position: relative; }
.trajectory-dot { position: absolute; z-index: 2; top: 2px; left: 50%; width: 9px; height: 9px; border: 1px solid var(--signal); border-radius: 50%; background: var(--void); transform: translateX(-50%); transition: background 180ms ease, box-shadow 180ms ease; }
.trajectory-item:hover .trajectory-dot { background: var(--signal); box-shadow: 0 0 13px rgba(109, 231, 242, .65); }
.trajectory-copy { padding: 0 0 40px 4px; }
.trajectory-place { margin-bottom: 7px; color: var(--signal); font-family: var(--mono); font-size: 11px; }
.trajectory-copy h3 { font-size: clamp(23px, 2.6vw, 36px); }
.trajectory-copy p { margin: 10px 0 0; color: var(--muted); max-width: 620px; }

.contact-section { padding: 150px 0; background: radial-gradient(circle at 72% 45%, rgba(43, 115, 139, .13), transparent 34%); }
.contact-shell { padding-right: min(28vw, 360px); }
.contact-shell h2 { margin-top: 22px; max-width: 820px; font-size: clamp(50px, 8vw, 118px); }
.contact-shell > p:not(.section-number) { max-width: 610px; margin: 28px 0 0; color: var(--muted); font-size: 18px; }
.contact-actions { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; margin-top: 42px; }
.primary-action { display: inline-flex; align-items: center; min-height: 52px; padding: 0 22px; color: #031014; background: var(--signal); border: 1px solid var(--signal); text-decoration: none; font-family: var(--mono); font-size: 12px; font-weight: 600; transition: color 180ms ease, background 180ms ease; }
.primary-action:hover { color: var(--signal); background: transparent; }

.site-footer { position: relative; z-index: 2; display: flex; justify-content: space-between; gap: 20px; padding: 28px 0 34px; border-top: 1px solid var(--line); color: var(--dim); font-family: var(--mono); font-size: 10px; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--paper); }

/* Inner pages */
.inner-page { background: linear-gradient(180deg, #070a0e, #05070a 68%); }
.inner-main { position: relative; z-index: 1; padding-top: 150px; padding-bottom: 110px; }
.inner-hero { position: relative; min-height: 500px; display: grid; grid-template-columns: 1.15fr .7fr; gap: 80px; align-items: end; padding: 80px 0 70px; border-bottom: 1px solid var(--line); overflow: hidden; }
.inner-hero h1 { max-width: 800px; font-size: clamp(58px, 8vw, 116px); }
.inner-hero .kicker { margin-bottom: 20px; }
.inner-hero .lede { position: relative; z-index: 2; padding-bottom: 10px; font-size: 18px; }
.inner-orbit { position: absolute; right: -6%; top: -8%; width: 520px; height: 520px; opacity: .45; }
.inner-orbit span { position: absolute; inset: 16%; border: 1px solid rgba(109,231,242,.28); border-radius: 50%; transform: rotate(-22deg); }
.inner-orbit span:nth-child(2) { inset: 28% 2%; border-color: rgba(93,159,255,.33); transform: rotate(36deg); }
.inner-orbit span:nth-child(3) { inset: 42% -4%; border-color: rgba(237,246,248,.18); transform: rotate(74deg); }
.research-archive { padding: 70px 0 0; }
.filter-bar { display: flex; justify-content: space-between; gap: 30px; align-items: center; padding-bottom: 25px; border-bottom: 1px solid var(--line); }
.filter-bar h2 { font-family: var(--mono); font-size: 11px; letter-spacing: .04em; }
.filter-controls { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-button { min-height: 40px; padding: 0 14px; border: 1px solid var(--line); color: var(--muted); background: transparent; font-family: var(--mono); font-size: 10px; cursor: pointer; }
.filter-button:hover,
.filter-button.is-active { color: var(--void); background: var(--signal); border-color: var(--signal); }
.research-list { display: flex; flex-direction: column; }
.research-record { display: grid; grid-template-columns: 90px minmax(250px, 1.1fr) minmax(260px, .8fr); gap: 36px; padding: 46px 0; border-bottom: 1px solid var(--line); }
.record-year { color: var(--signal); font-family: var(--mono); font-size: 12px; }
.record-title { font-size: clamp(26px, 3.3vw, 46px); }
.record-authors { margin: 18px 0 0; color: var(--muted); font-size: 13px; }
.record-venue { margin: 10px 0 0; color: #cad5da; font-family: var(--mono); font-size: 10px; }
.record-side { display: flex; flex-direction: column; justify-content: space-between; gap: 28px; }
.record-label { display: block; margin-bottom: 8px; color: var(--dim); font-family: var(--mono); font-size: 9px; }
.record-contribution { margin: 0; color: #afbdc5; font-size: 14px; }
.record-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.record-tags span { padding: 4px 7px; border: 1px solid var(--line); color: var(--muted); font-family: var(--mono); font-size: 8px; }
.record-links { display: flex; gap: 16px; flex-wrap: wrap; }
.record-links a { color: var(--paper); text-decoration-color: var(--signal); text-underline-offset: 5px; font-family: var(--mono); font-size: 11px; }
.empty-state { margin: 40px 0; color: var(--muted); }

.about-main { padding-bottom: 130px; }
.about-hero { min-height: 720px; display: grid; grid-template-columns: minmax(280px,.7fr) 1.2fr; gap: 90px; align-items: center; padding-top: 30px; border-bottom: 1px solid var(--line); }
.about-portrait-wrap { position: relative; width: min(100%, 460px); justify-self: center; }
.about-portrait { display: block; width: 100%; aspect-ratio: 3/4; object-fit: cover; object-position: 50% 22%; filter: saturate(.68) contrast(1.08) brightness(.82); border: 1px solid var(--line-strong); }
.about-portrait-wrap::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 56%, rgba(5,7,10,.48)); pointer-events: none; }
.portrait-coordinate { position: absolute; z-index: 2; left: -30px; right: -30px; top: 50%; display: flex; justify-content: space-between; color: var(--signal); font-family: var(--mono); font-size: 9px; transform: rotate(-90deg); }
.about-intro .kicker { margin-bottom: 20px; }
.about-intro h1 { font-size: clamp(52px, 7vw, 104px); }
.about-intro .lede { margin-top: 30px; }
.about-statement { display: grid; grid-template-columns: 130px 1fr; gap: 34px; padding: 120px 0; border-bottom: 1px solid var(--line); }
.about-statement h2 { margin-bottom: 30px; }
.about-statement div > p { max-width: 820px; margin: 0; color: #b3c1c9; font-size: clamp(19px,2vw,27px); line-height: 1.55; }
.about-timeline-section { padding: 120px 0 40px; }
.about-trajectory { margin-left: 164px; }
.about-bottom { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; padding-top: 100px; }
.about-bottom h2 { margin: 16px 0 30px; font-size: clamp(36px,4vw,58px); }
.service-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.service-list li { padding: 18px 0; border-bottom: 1px solid var(--line); color: #b5c3ca; }
.connect-panel { padding: 38px; border: 1px solid var(--line-strong); background: linear-gradient(140deg, rgba(18,31,39,.7), rgba(8,12,16,.62)); }
.connect-panel p { margin: 0; color: var(--muted); }
.connect-panel .primary-action { margin-top: 28px; }
.connect-panel .text-action { display: flex; width: fit-content; margin-top: 24px; }

@media (max-width: 1000px) {
  :root { --shell: min(100% - 56px, 920px); }
  .hero-copy { padding-right: 30vw; }
  .featured-card { grid-template-columns: 80px 1fr; }
  .featured-meta { grid-column: 2; }
  .inner-hero { grid-template-columns: 1fr; gap: 28px; }
  .inner-hero .lede { max-width: 620px; }
  .research-record { grid-template-columns: 70px 1fr; }
  .record-side { grid-column: 2; }
  .about-hero { grid-template-columns: .7fr 1fr; gap: 50px; }
  .about-bottom { gap: 42px; }
}

@media (max-width: 760px) {
  :root { --shell: calc(100vw - 36px); --header-height: 64px; }
  body { font-size: 15px; }
  .site-header { padding: 0 18px; background: rgba(5,7,10,.9); border-bottom: 1px solid var(--line); }
  .menu-toggle { position: relative; z-index: 2; display: grid; gap: 6px; width: 44px; height: 44px; place-content: center; border: 0; color: var(--paper); background: transparent; cursor: pointer; }
  .menu-toggle > span:not(.sr-only) { width: 22px; height: 1px; background: currentColor; transition: transform 180ms ease; }
  .menu-toggle[aria-expanded="true"] > span:nth-last-child(2) { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] > span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .site-nav { position: fixed; inset: 0; display: none; padding: 110px 24px 40px; flex-direction: column; align-items: flex-start; gap: 16px; background: rgba(5,7,10,.98); }
  .site-nav.is-open { display: flex; }
  .site-nav a, .language-switch { width: 100%; padding: 13px 0; font-family: var(--display); font-size: 28px; border-bottom: 1px solid var(--line); }
  .language-switch { border-left: 0; text-align: left; }
  h1 { font-size: clamp(46px, 15vw, 72px); }
  h2 { font-size: clamp(34px, 11vw, 54px); }
  .hero-copy { padding: 96px 18px 120px; width: 100%; }
  .hero-copy h1 { max-width: 96%; }
  .hero-copy .lede { margin-top: 22px; font-size: 17px; }
  .hero-index { left: 18px; right: 18px; bottom: 18px; }
  .hero-index span:nth-child(2) { display: none; }
  .chapter-rail { display: none; }
  .spatial-stage { opacity: .62; }
  .orbit-fallback { width: 92vw; right: -42vw; top: 12vh; }
  .home-chapter { min-height: auto; }
  .signal-section, .research-section, .trajectory-section, .contact-section { padding: 100px 0; }
  .split-heading, .section-intro, .about-statement { grid-template-columns: 1fr; gap: 22px; }
  .signal-list { margin-top: 42px; }
  .signal-item { grid-template-columns: 42px 1fr; gap: 14px; }
  .signal-item p { grid-column: 2; }
  .featured-research, .trajectory, .about-trajectory { margin-left: 0; }
  .featured-card { grid-template-columns: 54px 1fr; gap: 14px; }
  .featured-meta { grid-column: 2; }
  .research-section > .section-shell > .text-action { margin-left: 0; }
  .trajectory::before { left: 79px; }
  .trajectory-item { grid-template-columns: 66px 28px 1fr; min-height: 145px; }
  .contact-shell { padding-right: 0; }
  .site-footer { width: calc(100vw - 36px); flex-direction: column; }
  .inner-main { padding-top: 96px; }
  .inner-hero { min-height: 530px; padding: 54px 0; }
  .inner-hero h1 { font-size: clamp(52px, 16vw, 78px); }
  .inner-orbit { width: 370px; height: 370px; right: -44%; top: -6%; }
  .filter-bar { align-items: flex-start; flex-direction: column; }
  .filter-controls { display: grid; grid-template-columns: 1fr 1fr; width: 100%; }
  .research-record { grid-template-columns: 1fr; gap: 13px; padding: 38px 0; }
  .record-side { grid-column: 1; margin-top: 12px; }
  .about-hero { min-height: auto; grid-template-columns: 1fr; gap: 45px; padding: 55px 0 80px; }
  .about-portrait-wrap { width: min(82vw, 390px); }
  .about-intro h1 { font-size: clamp(49px, 15vw, 76px); }
  .about-statement { padding: 90px 0; }
  .about-timeline-section { padding-top: 90px; }
  .about-bottom { grid-template-columns: 1fr; padding-top: 70px; }
  .connect-panel { padding: 26px; }
}

@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; }
}

/* Orbit Archive: identity, editorial hierarchy and accessible interaction. */
html { scroll-padding-top: calc(var(--header-height) + 24px); }
[hidden] { display: none !important; }
body.menu-open { overflow: hidden; }
.brand { font-size: 16px; }
.site-nav a, .language-switch { min-height: 44px; display: inline-flex; align-items: center; }
.hero { min-height: max(780px, 100svh); }
.hero-copy { padding: 118px 0 154px; }
.hero-identity { display: flex; align-items: center; gap: 12px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 12px #6de7f255; }
.hero-copy .kicker { margin-bottom: 34px; }
.hero-copy h1 { max-width: 720px; font-size: clamp(64px, 6.6vw, 96px); line-height: 1.04; letter-spacing: -.065em; }
.hero-copy h1 > span { display: block; }
.hero-title-accent { color: var(--signal); }
.hero-role { margin: 28px 0 0; font-size: 14px; letter-spacing: .015em; color: var(--paper); }
.hero-copy .lede { max-width: 500px; margin-top: 16px; font-size: 17px; line-height: 1.75; }
.hero-actions { display: flex; align-items: center; gap: 30px; margin-top: 32px; }
.hero-actions .text-action { margin: 0; }
.hero-actions .primary-action { gap: 28px; }
.hero-affiliations { margin-top: 48px; display: flex; align-items: center; gap: 26px; width: fit-content; padding-top: 20px; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 12px; letter-spacing: .08em; }
.hero-affiliations > span:first-child { color: var(--dim); font-size: 10px; letter-spacing: 0; }
.hero-index { border-top: 1px solid var(--line); padding-top: 20px; font-size: 10px; }
.hero-index a { text-decoration: none; color: var(--muted); }
.hero-index a:hover { color: var(--signal); }
.scene-caption { position: absolute; right: 10%; bottom: 18%; display: flex; flex-direction: column; align-items: flex-start; gap: 10px; font-family: var(--mono); font-size: 10px; pointer-events: none; }
.scene-label { color: var(--signal); letter-spacing: .035em; }
.scene-label::before { content: '+'; margin-right: 12px; }
.scene-instruction { color: var(--dim); padding-left: 18px; font-size: 9px; }
.chapter-rail { left: 22px; }
.chapter-rail li a { position: absolute; inset: -8px; border-radius: 50%; }
.chapter-rail li a span { left: 25px; }
.chapter-rail li:focus-within span { opacity: 1; transform: translate(0,-50%); }
.chapter-rail li:not(.is-active) span { opacity: 0; }
.chapter-rail:hover li span, .chapter-rail li:focus-within span { opacity: 1; }
.split-heading, .section-intro, .about-statement { grid-template-columns: 90px 1fr; }
.signal-section { background: linear-gradient(90deg, #05070af5 35%, #05070aab); }
.signal-item { grid-template-columns: 44px 1fr 1fr; }
.signal-item h3 { font-size: clamp(25px,2.5vw,36px); line-height: 1.18; }
.signal-item p { max-width: 400px; }
h2 { font-size: clamp(34px,4vw,58px); line-height: 1.1; }
.featured-research { margin-left: 0; margin-top: 52px; }
.featured-card { grid-template-columns: 280px 42px minmax(0,1fr) 150px; align-items: start; gap: 24px; padding: 32px 0; }
.featured-title { margin: 0 0 10px; font-size: 38px; letter-spacing: -.04em; }
.featured-subtitle { font-size: 15px; line-height: 1.5; color: var(--paper); margin: 0 0 16px; }
.featured-copy { font-size: 14px; line-height: 1.65; }
.featured-year { padding-top: 5px; }
.featured-meta { padding-top: 5px; white-space: pre-line; font-size: 11px; line-height: 1.9; }
.research-figure { margin: 0; min-width: 0; }
.research-figure img { display: block; width: 100%; height: auto; border: 1px solid var(--line); transition: border-color 180ms ease; }
.featured-card:hover .research-figure img { border-color: var(--signal); }
.research-figure figcaption { margin-top: 10px; color: var(--dim); font-family: var(--mono); font-size: 9px; line-height: 1.7; }
.research-section > .section-shell > .text-action { margin-left: 0; }
.trajectory { margin-left: 124px; }
.trajectory-period { max-width: 92px; line-height: 1.9; overflow-wrap: anywhere; }
.trajectory-place { font-size: 12px; }
.trajectory-copy h3 { font-size: clamp(23px,2.25vw,32px); line-height: 1.2; }
.trajectory-copy p { line-height: 1.75; }
.contact-shell h2 { font-size: clamp(50px,7vw,96px); }
.contact-actions .text-action { margin-top: 0; }
.site-footer { line-height: 1.8; }
.inner-main { padding-top: 100px; }
.inner-hero { min-height: 410px; padding: 70px 0; gap: 60px; }
.inner-hero h1 { font-size: clamp(58px,6.5vw,92px); line-height: 1.02; }
.filter-button { min-height: 44px; font-size: 11px; }
.filter-bar h2 { font-size: 12px; }
.research-summary { font-family: var(--mono); color: var(--dim); font-size: 11px; margin: 20px 0 0; }
.research-record { grid-template-columns: 65px minmax(0,1.1fr) minmax(0,.85fr); column-gap: 36px; row-gap: 24px; padding: 48px 0; scroll-margin-top: 100px; }
.record-year { grid-column: 1; grid-row: 1; }
.research-record > .research-figure { grid-column: 2; grid-row: 2; max-width: 450px; }
.record-main { grid-column: 2; grid-row: 1; }
.record-side { grid-column: 3; grid-row: 1 / 3; justify-content: flex-start; gap: 32px; padding-top: 8px; }
.record-title { font-size: clamp(27px,2.4vw,36px); line-height: 1.18; }
.record-authors { line-height: 1.8; }
.record-authors strong { color: var(--paper); font-weight: 600; }
.record-venue { font-size: 11px; line-height: 1.9; color: var(--signal); }
.record-label { font-size: 10px; }
.record-contribution { font-size: 15px; line-height: 1.8; }
.record-tags span { font-size: 10px; }
.record-links a { min-height: 44px; display: inline-flex; align-items: center; font-size: 12px; }
.about-hero { min-height: 650px; grid-template-columns: .7fr 1.2fr; gap: 84px; padding: 64px 0 80px; }
.about-portrait-wrap { max-width: 350px; }
.about-portrait { filter: saturate(.85); height: auto; }
.portrait-coordinate { left: -24px; right: auto; top: 0; bottom: 0; writing-mode: vertical-rl; transform: none; font-size: 9px; }
.about-intro h1 { font-size: clamp(56px,7vw,98px); line-height: 1.08; }
.about-role { margin: 18px 0 0; color: var(--signal); font-family: var(--mono); font-size: 12px; }
.about-intro .lede { font-size: 17px; line-height: 1.85; margin-top: 24px; }
.advisor-links { display: flex; flex-wrap: wrap; gap: 10px 20px; margin-top: 26px; font-size: 12px; }
.advisor-links > span { flex-basis: 100%; color: var(--dim); font-family: var(--mono); font-size: 10px; }
.advisor-links a { text-underline-offset: 5px; text-decoration-color: var(--line-strong); }
.advisor-links a:hover { color: var(--signal); }
.about-statement { padding: 100px 0; }
.about-statement div > p { font-size: clamp(19px,1.8vw,24px); line-height: 1.85; }
.connect-panel { padding: 32px; }
.connect-panel .primary-action { max-width: 100%; overflow-wrap: anywhere; font-size: 11px; }
.noscript-note { position: relative; z-index: 3; padding: 28px; max-width: 800px; margin: 0 auto 40px; border: 1px solid var(--line); background: var(--carbon); }
html:lang(zh-CN) h1, html:lang(zh-CN) h2, html:lang(zh-CN) h3 { letter-spacing: -.025em; line-height: 1.25; }
html:lang(zh-CN) .hero-copy h1 { font-size: clamp(58px,6vw,88px); }
html:lang(zh-CN) .hero-copy .lede { max-width: 450px; }

@media (min-width: 1700px) {
  .scene-caption { right: calc((100vw - 1180px) / 2); }
}
@media (max-width: 1150px) and (min-width: 761px) {
  .hero-copy h1 { font-size: clamp(60px,7.4vw,84px); }
  .hero-copy .lede { max-width: 48%; }
  .scene-caption { right: 5%; bottom: 20%; }
  .featured-card { grid-template-columns: 240px 40px 1fr; }
  .featured-card > .research-figure { grid-column: 1; grid-row: 1 / 3; }
  .featured-card > .featured-meta { grid-column: 3; padding: 0; }
  .research-record { grid-template-columns: 48px 1fr 1fr; column-gap: 24px; }
  .record-title { font-size: 28px; }
  .about-hero { gap: 44px; }
  .about-intro h1 { font-size: 70px; }
  .about-bottom { gap: 28px; }
  .connect-panel { padding: 24px; }
}
@media (max-width: 760px) {
  .brand { font-size: 15px; }
  .site-nav { padding-top: 100px; }
  .site-nav a, .language-switch { font-size: 28px; }
  .hero { min-height: max(850px,100svh); align-items: flex-start; }
  .hero-copy { padding: 130px 0 300px; width: var(--shell); }
  .hero-copy .kicker { font-size: 11px; margin-bottom: 26px; }
  .hero-copy h1 { font-size: clamp(43px,10.8vw,76px); line-height: 1.08; letter-spacing: -.06em; max-width: 100%; }
  .hero-role { font-size: 12px; margin-top: 24px; }
  .hero-copy .lede { font-size: 15px; line-height: 1.8; max-width: 440px; margin-top: 14px; }
  .hero-actions { gap: 20px; flex-wrap: wrap; margin-top: 26px; }
  .hero-actions .text-action { font-size: 11px; }
  .hero-actions .primary-action { min-height: 48px; padding: 0 16px; font-size: 11px; gap: 18px; }
  .hero-affiliations { margin-top: 32px; gap: 22px; padding-top: 18px; font-size: 11px; }
  .hero-affiliations > span:first-child { font-size: 9px; }
  .spatial-stage { opacity: .7; }
  .scene-caption { right: 24px; bottom: 105px; gap: 5px; font-size: 9px; }
  .scene-instruction { display: none; }
  .hero-index { padding-top: 16px; font-size: 8px; }
  .hero-index > span:last-child { display: none; }
  .hero-index > a { display: inline; }
  .split-heading, .section-intro, .about-statement { grid-template-columns: 1fr; gap: 22px; }
  .signal-item { grid-template-columns: 30px 1fr; gap: 14px; }
  .signal-item h3 { font-size: 26px; }
  .signal-item p { grid-column: 2; font-size: 14px; }
  .featured-research { margin-top: 38px; }
  .featured-card { grid-template-columns: 34px minmax(0,1fr); gap: 14px; padding: 28px 0; }
  .featured-card > .research-figure { grid-column: 1 / -1; grid-row: auto; margin-bottom: 10px; }
  .featured-year { grid-column: 1; font-size: 10px; }
  .featured-title { font-size: 34px; }
  .featured-subtitle { font-size: 14px; }
  .featured-copy { font-size: 14px; }
  .featured-meta { grid-column: 2; padding: 0; }
  .trajectory, .about-trajectory { margin-left: 0; margin-top: 46px; }
  .trajectory-period { font-size: 9px; padding-right: 8px; }
  .trajectory-copy h3 { font-size: 23px; }
  .trajectory-copy p { font-size: 14px; }
  .contact-shell h2 { font-size: 56px; }
  .contact-actions { gap: 24px; }
  .contact-shell > p:not(.section-number) { font-size: 16px; }
  .inner-main { padding-top: 90px; padding-bottom: 80px; }
  .inner-hero { min-height: 410px; padding: 48px 0; gap: 28px; }
  .inner-hero h1 { font-size: 58px; }
  .inner-hero .lede { font-size: 16px; }
  .research-archive { padding-top: 38px; }
  .filter-controls { gap: 8px; }
  .filter-button { padding: 8px; font-size: 10px; line-height: 1.5; }
  .research-summary { font-size: 10px; line-height: 1.9; }
  .research-record { grid-template-columns: 1fr; gap: 22px; padding: 36px 0; }
  .record-year, .record-main, .research-record > .research-figure, .record-side { grid-column: 1; grid-row: auto; }
  .research-record > .research-figure { max-width: none; }
  .record-main { order: 2; }
  .record-year { order: 0; }
  .research-record > .research-figure { order: 1; }
  .record-side { order: 3; padding-top: 0; margin-top: 0; }
  .record-title { font-size: 28px; }
  .about-hero { grid-template-columns: 1fr; padding: 36px 0 60px; gap: 40px; }
  .about-portrait-wrap { width: min(72vw,320px); }
  .about-intro h1 { font-size: 64px; }
  .about-intro .lede { font-size: 16px; }
  .about-statement { padding: 70px 0; }
  .about-statement div > p { font-size: 19px; }
  .connect-panel { padding: 24px; }
  .about-bottom { gap: 48px; }
  html:lang(zh-CN) .hero-copy h1 { font-size: clamp(39px,10.4vw,68px); }
  html:lang(zh-CN) .hero-copy .lede { max-width: 440px; }
}
@media (max-width: 360px) {
  .hero-actions { gap: 16px; }
  .hero-affiliations { gap: 16px; }
  .hero-copy { padding-top: 112px; }
  .connect-panel .primary-action { padding: 10px 12px; font-size: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  .magnetic { transform: none !important; }
}

/* Original research images retain their complete aspect ratio and color. */
.research-figure img { background: #fff; object-fit: contain; }
.research-figure figcaption a { text-underline-offset: 3px; }
.research-figure figcaption a:hover { color: var(--signal); }

/* Chapter arrivals: diffuse splats resolve into a readable, stable composition. */
.section-reveal {
  opacity: .22;
  filter: blur(12px);
  transform: translate3d(0, 28px, 0) scale(.985);
  transition: opacity 1000ms cubic-bezier(.2,.7,.2,1), filter 1100ms cubic-bezier(.2,.7,.2,1), transform 1100ms cubic-bezier(.2,.7,.2,1);
}
.section-reveal.is-revealed { opacity: 1; filter: blur(0); transform: none; }
.chapter-comet {
  position: fixed;
  z-index: 8;
  top: 0;
  left: 0;
  width: clamp(160px, 32vw, 460px);
  height: 2px;
  opacity: 0;
  pointer-events: none;
  transform: translate3d(110vw, -10vh, 0) rotate(-24deg);
  transform-origin: left center;
  background: linear-gradient(90deg, #edf6f8 0%, #6de7f2aa 8%, #5d9fff30 45%, transparent 100%);
}
.chapter-comet::before { content: ""; position: absolute; left: -2px; top: -2px; width: 6px; height: 6px; border-radius: 50%; background: #edf6f8; box-shadow: 0 0 12px #6de7f2b0, 0 0 30px #5d9fff60; }
.chapter-comet.is-crossing { animation: chapter-comet 1250ms cubic-bezier(.22,.5,.35,1) both; }
@keyframes chapter-comet {
  0% { opacity: 0; transform: translate3d(110vw, 8vh, 0) rotate(-24deg); }
  10% { opacity: .85; }
  70% { opacity: .65; }
  100% { opacity: 0; transform: translate3d(-48vw, 78vh, 0) rotate(-24deg); }
}
.record-project { margin: 0 0 12px; color: var(--signal); font-family: var(--mono); font-size: 13px; letter-spacing: .06em; }
@media (max-width: 760px) {
  .section-reveal { filter: blur(7px); transform: translate3d(0,20px,0); }
  .section-reveal.is-revealed { transform: none; }
  .chapter-comet.is-crossing { animation-duration: 1050ms; }
}
@media (prefers-reduced-motion: reduce) {
  .section-reveal { opacity: 1; filter: none; transform: none; transition: none; }
  .chapter-comet { display: none; animation: none !important; }
}