/* =========================================================================
   XU Lab project page template — style.css
   Plain CSS, no build step. Re-theme by editing the custom properties below.
   Modules: base · layout · hero · demos · results chart · capabilities
            (nav, card, pipeline, speedup, icl, planner) · contributions · footer
   ========================================================================= */

:root {
  /* Surfaces */
  --c-bg: #F2F2ED;
  --c-band: #EAF4F1;          /* light mint section band */
  --c-card: #FFFFFF;
  --c-media: #E8EFEE;         /* placeholder behind videos */
  --c-media-dark: #282C43;

  /* Ink */
  --c-heading: #262B3A;
  --c-accent: #087A9E;        /* deep teal: readable links and active states */
  --c-text: #626878;          /* body copy */
  --c-text-strong: #454B61;
  --c-muted: #6B7180;         /* captions */
  --c-axis: #626878;

  /* Neutral borders and FOMI palette */
  --c-line: #DFE3E1;
  --c-line-strong: #CDD5D4;
  --c-line-hover: #118AB2;
  --c-series-1: #464B71;      /* chart: FOMI */
  --c-series-2: #118AB2;
  --c-series-3: #7CD5C7;
  --c-active-bg: #E4F4F0;     /* light mint */
  --c-nav-hover: #E8F0F2;

  /* Shape */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --shadow-card: 0 12px 36px rgba(17, 24, 39, 0.06);
  --shadow-card-lg: 0 16px 44px rgba(17, 24, 39, 0.06);

  /* Widths */
  --w-text: 800px;            /* hero, intros, media */
  --w-section: 1040px;
  --w-wide: 1120px;
  --w-cap-card: 920px;
  --gutter: 32px;

  /* Section rhythm */
  --pad-top: 56px;
  --pad-bottom: 72px;

  --font: "Alibaba PuHuiTi 3.0", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Helvetica, Arial, sans-serif;
}

@media (min-width: 768px) {
  :root {
    --pad-top: 72px;
    --pad-bottom: 96px;
  }
}

/* ---------- Base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-heading);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;           /* clip (not hidden) keeps position: sticky working */
}

img, video, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; color: inherit; }
p { margin: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; }

.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;
}

/* ---------- Layout ---------- */
.section { padding: var(--pad-top) var(--gutter) var(--pad-bottom); }
.section--band { background: var(--c-band); }
.container { width: 100%; max-width: var(--w-section); margin: 0 auto; }
.container--wide { max-width: var(--w-wide); }

.section-head { max-width: var(--w-text); margin: 0 auto 48px; text-align: center; }
.section-title {
  font-size: 26px; line-height: 34px; font-weight: 600;
  color: var(--c-heading); text-align: center;
}
.section-lead {
  margin-top: 12px;
  font-size: 14px; line-height: 22px; color: var(--c-text);
}
@media (min-width: 768px) {
  .section-title { font-size: 40px; line-height: 52px; }
  .section-lead { font-size: 16px; line-height: 26px; }
}

/* Shared media frame (16:9, rounded) */
.media {
  position: relative; width: 100%; aspect-ratio: 16 / 9;
  overflow: hidden; border-radius: var(--r-sm); background: var(--c-media);
}
.media > video,
.media > img,
.media > .placeholder { width: 100%; height: 100%; object-fit: cover; }
.media--dark { background: var(--c-media-dark); }
.media video { cursor: pointer; }

/* Neutral placeholder used by starter.html */
.placeholder {
  display: flex; align-items: center; justify-content: center;
  background: repeating-linear-gradient(135deg, #e9eaee 0 12px, #f1f2f5 12px 24px);
  color: #9a9ca3; font-size: 14px; letter-spacing: 0.04em;
}

/* ---------- Hero ---------- */
.hero { padding: 100px var(--gutter) 64px; text-align: center; }
.hero__inner { max-width: var(--w-text); margin: 0 auto; }
.hero__title {
  font-size: 32px; line-height: 40px; font-weight: 600; letter-spacing: -0.025em;
  color: var(--c-heading);
}
.hero__title-accent { color: inherit; } /* titles stay black */
.hero__subtitle { margin-top: 12px; font-size: 14px; line-height: 21px; color: var(--c-text); }
.hero__links { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 24px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px; border: 1px solid rgba(0, 0, 0, 0.12); border-radius: 999px;
  font-size: 14px; line-height: 21px; color: var(--c-heading); text-decoration: none;
  transition: background-color 0.2s, border-color 0.2s;
}
.pill:hover { background: var(--c-accent); border-color: var(--c-accent); color: #fff; }
.pill svg { width: 16px; height: 16px; flex: none; }
.hero__media { margin-top: 24px; border-radius: var(--r-lg); background: #e9eaee; }
.hero__summary {
  margin-top: 80px; text-align: left;
  font-size: 14px; line-height: 24px; color: var(--c-text);
}
@media (min-width: 768px) {
  .hero { padding: 160px var(--gutter) 88px; }
  .hero__title { font-size: 64px; line-height: 80px; }
  .hero__subtitle { margin-top: 16px; font-size: 16px; line-height: 24px; }
  .pill { padding: 8px 24px; font-size: 16px; line-height: 24px; }
  .hero__media { margin-top: 72px; }
  .hero__summary { font-size: 16px; line-height: 24px; }
}

/* ---------- Task demos (player + thumbnail list) ---------- */
.demos__desc { line-height: 24px; }
@media (min-width: 768px) { .demos__desc { line-height: 26px; } }

.demos__stage { display: flex; flex-direction: column-reverse; gap: 12px; }
.demos__player { width: 100%; max-width: var(--w-text); margin: 0 auto; border-radius: var(--r-lg); }
.demos__list {
  display: flex; gap: 8px; padding: 8px; overflow-x: auto;
  background: #fff; border-radius: var(--r-sm); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  scrollbar-width: none;
}
.demos__list::-webkit-scrollbar { display: none; }
.thumb {
  flex: none; display: flex; flex-direction: column; width: 137px; padding: 0;
  overflow: hidden; cursor: pointer; text-align: center; background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.08); border-radius: var(--r-sm);
  transition: border-color 0.3s;
}
.thumb:hover { border-color: var(--c-line-hover); }
.thumb[aria-pressed="true"] { border-color: var(--c-accent); }
.thumb img, .thumb .placeholder { width: 135px; height: 76px; object-fit: cover; font-size: 11px; }
.thumb__label {
  display: block; padding: 4px 4px; font-size: 12px; line-height: 16px; color: var(--c-axis);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
@media (min-width: 1180px) {
  /* Player stays centred; list hangs to its left like the reference */
  .demos__stage {
    display: grid; grid-template-columns: 1fr minmax(0, var(--w-text)) 1fr;
    align-items: stretch; gap: 0;
  }
  .demos__player { grid-column: 2; grid-row: 1; }
  .demos__stage { margin-bottom: 24px; }
  .demos__list {
    grid-column: 1; grid-row: 1; justify-self: end; margin-right: 24px;
    flex-direction: column; justify-content: space-between; overflow: visible;
  }
}

/* ---------- Quantitative results (bar chart) ---------- */
.chart {
  width: 100%; max-width: 880px; margin: 0 auto;
  padding: 16px; background: #fff; border-radius: var(--r-lg);
}
.chart__title { margin-bottom: 8px; text-align: center; font-size: 18px; line-height: 27px; font-weight: 600; color: var(--c-heading); }
.chart__scroll { position: relative; overflow-x: auto; }
.chart__svg { width: 100%; max-width: none; height: 240px; overflow: visible; }
.chart__svg text { font-family: var(--font); }
.chart__legend {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 24px;
  margin: 12px 0 0; padding: 0; list-style: none;
}
.chart__legend li { display: flex; align-items: center; gap: 6px; font-size: 12px; line-height: 18px; color: var(--c-axis); }
.chart__swatch { width: 12px; height: 4px; border-radius: 2px; }
.chart__tip {
  position: absolute; pointer-events: none; z-index: 2; min-width: 150px;
  padding: 8px 12px; background: rgba(255, 255, 255, 0.97); border: 1px solid var(--c-line);
  border-radius: var(--r-sm); box-shadow: var(--shadow-card); font-size: 12px; line-height: 20px; color: var(--c-text-strong);
}
.chart__tip b { display: block; color: var(--c-heading); }
.chart__tip span { display: flex; align-items: center; gap: 6px; }
.chart__tip i { width: 8px; height: 8px; border-radius: 2px; }
/* The data table stays in the DOM for no-JS / screen readers */
.chart__table { width: 100%; border-collapse: collapse; font-size: 13px; color: var(--c-text-strong); }
.chart__table th, .chart__table td { padding: 6px 8px; border-bottom: 1px solid var(--c-line); text-align: right; }
.chart__table th:first-child, .chart__table td:first-child { text-align: left; }
.js .chart__table { position: absolute; display: block; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Capabilities ---------- */
.cap-title { font-size: 26px; line-height: 34px; font-weight: 600; color: var(--c-heading); }
@media (min-width: 768px) { .cap-title { font-size: 40px; line-height: 52px; } }
.cap-head { margin-bottom: 48px; }
.cap-head .section-lead { margin-top: 16px; }

.cap-layout { position: relative; width: 100%; max-width: var(--w-cap-card); margin: 0 auto; }
.cap-stack { display: flex; flex-direction: column; gap: 24px; }
@media (min-width: 768px) { .cap-stack { gap: 32px; } }

/* Side nav: hidden until there is room for it beside the cards */
.cap-nav { display: none; }
@media (min-width: 1280px) {
  .cap-layout { max-width: min(var(--w-cap-card), calc(100vw - 520px)); }
  .cap-nav { display: block; position: absolute; top: 0; bottom: 0; left: -252px; width: 222px; }
  .cap-nav__inner { position: sticky; top: 104px; display: flex; flex-direction: column; }
}
.cap-nav__item {
  display: flex; flex-direction: column; justify-content: center; height: 80px; padding: 0 16px;
  border-left: 2px solid transparent; color: var(--c-axis); text-decoration: none;
  transition: background-color 0.2s, color 0.2s, border-radius 0.2s;
}
.cap-nav__item:hover { background: var(--c-nav-hover); color: var(--c-heading); border-radius: 0 var(--r-md) var(--r-md) 0; }
.cap-nav__item.is-active {
  background: #fff; color: var(--c-heading); border-left-color: var(--c-accent);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}
.cap-nav__title { font-size: 16px; line-height: 24px; font-weight: 600; }
.cap-nav__sub { margin-top: 2px; font-size: 12px; line-height: 18px; color: var(--c-text); }

/* Card */
.cap-card {
  scroll-margin-top: 96px;
  padding: 20px; background: var(--c-card); border-radius: var(--r-sm); box-shadow: var(--shadow-card);
}
.cap-card__title { margin-bottom: 18px; font-size: 22px; line-height: 30px; font-weight: 600; color: var(--c-heading); }
.cap-card__title--tight { margin-bottom: 12px; }
.cap-card__text { font-size: 14px; line-height: 24px; color: var(--c-text); }
.cap-card__intro { display: grid; gap: 24px; align-items: start; }
.cap-card__intro .media { max-width: 520px; justify-self: end; }
@media (min-width: 768px) {
  .cap-card { padding: 28px; }
  .cap-card__title { margin-bottom: 22px; font-size: 32px; line-height: 40px; }
  .cap-card__title--tight { margin-bottom: 12px; }
  .cap-card__text { font-size: 16px; line-height: 28px; }
}
@media (min-width: 1024px) {
  .cap-card__intro--media { grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); }
}

/* Sub-block inside a card (pipeline, speedup, scenario) */
.sub-block { margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--c-line); }
.sub-block__head { max-width: 820px; margin-bottom: 16px; }
.sub-block__title { margin-bottom: 8px; font-size: 16px; line-height: 24px; font-weight: 600; color: var(--c-heading); }
.sub-block__text { font-size: 14px; line-height: 24px; color: var(--c-text); }
@media (min-width: 768px) { .sub-block__title { font-size: 18px; } }

.figure { margin: 0; }
.figure__frame { width: 100%; overflow-x: auto; border-radius: var(--r-sm); background: #fff; }
.figure__frame > svg { width: 100%; height: auto; min-width: 720px; }
.figure__caption { margin-top: 10px; text-align: center; font-size: 13px; line-height: 20px; color: var(--c-muted); }

/* Foresight diagram text defaults */
.diagram { font-family: var(--font); }
.diagram text { fill: #3b3b3b; }
.diagram .fs-wire { fill: none; stroke: #ababab; stroke-width: 1.4; }

/* Speedup video grid */
.clip-grid { display: grid; gap: 16px; }
@media (min-width: 768px) { .clip-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.clip-grid figcaption { margin-top: 8px; text-align: center; font-size: 13px; line-height: 20px; color: var(--c-text-strong); }

/* ICL scenario carousel */
.icl { margin-top: 28px; }
.icl__title { margin-bottom: 18px; }
.carousel { display: flex; align-items: stretch; gap: 10px; }
.carousel__step {
  flex: none; display: flex; align-items: center; justify-content: center; width: 40px;
  border: 1px solid var(--c-line-strong); border-radius: var(--r-sm); background: #fff;
  font-size: 22px; line-height: 1; color: var(--c-accent); cursor: pointer;
  transition: border-color 0.2s, background-color 0.2s;
}
.carousel__step:hover { border-color: var(--c-line-hover); background: var(--c-active-bg); }
.carousel__track { flex: 1; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.carousel__track::-webkit-scrollbar { display: none; }
.carousel__chips { display: flex; gap: 10px; padding-bottom: 2px; }
.chip {
  flex: none; width: 220px; min-height: 64px; padding: 10px 14px; text-align: left;
  border: 1px solid var(--c-line-strong); border-radius: var(--r-sm); background: #fff;
  font-size: 13px; line-height: 20px; font-weight: 600; color: var(--c-text-strong); cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.chip:hover { border-color: var(--c-line-hover); color: var(--c-accent); }
.chip[aria-pressed="true"] { border-color: var(--c-accent); background: var(--c-active-bg); color: var(--c-accent); }
@media (min-width: 768px) { .chip { width: 250px; font-size: 14px; } }
.pair { display: grid; gap: 18px; margin-top: 20px; }
@media (min-width: 1024px) { .pair { grid-template-columns: 1fr 1fr; } }
.pair__label { margin-bottom: 10px; font-size: 14px; line-height: 20px; font-weight: 600; color: var(--c-heading); }

/* Planner diagram animation */
.pl-flow { stroke-dasharray: 12 12; animation: pl-flow 1.8s linear infinite; }
.pl-flow--late { animation-delay: -0.75s; }
.pl-feedback { stroke-dasharray: 10 14; animation: pl-feedback 2.6s linear infinite; }
.pl-pulse { animation: pl-pulse 3.8s ease-in-out infinite; }
.pl-chip { animation: pl-chip 2.8s ease-in-out infinite; }
@keyframes pl-flow { to { stroke-dashoffset: -48; } }
@keyframes pl-feedback { to { stroke-dashoffset: -60; } }
@keyframes pl-pulse {
  0%, 100% { filter: drop-shadow(0 0 0 rgba(17, 24, 39, 0)); }
  50% { filter: drop-shadow(0 0 10px rgba(17, 24, 39, 0.18)); }
}
@keyframes pl-chip { 0%, 100% { opacity: 0.78; } 50% { opacity: 1; } }

/* ---------- Contributions (numbered 2×2 cards) ---------- */
.how-lead {
  max-width: 900px; margin: 16px auto 48px;
  font-size: 15px; line-height: 26px; color: var(--c-text);
}
.how-grid { display: grid; gap: 18px; }
.how-card {
  display: flex; flex-direction: column; min-height: 260px; padding: 26px;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-sm); box-shadow: var(--shadow-card-lg);
}
.how-card__num { font-size: 28px; line-height: 1; font-weight: 600; color: var(--c-line-strong); }
.how-card__kicker {
  margin-top: 20px; font-size: 14px; line-height: 22px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--c-accent);
}
.how-card__body { margin-top: 22px; font-size: 16px; line-height: 29px; color: var(--c-text); }
@media (min-width: 768px) {
  .how-lead { font-size: 18px; line-height: 30px; }
  .how-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .how-card { min-height: 300px; padding: 36px; }
  .how-card__num { font-size: 34px; }
  .how-card__kicker { font-size: 15px; line-height: 24px; }
  .how-card__body { font-size: 18px; line-height: 32px; }
}

/* ---------- Footer ---------- */
.footer {
  padding: 28px var(--gutter); border-top: 1px solid var(--c-line); text-align: center;
  font-size: 13px; line-height: 1.5; letter-spacing: 0.04em; color: var(--c-text);
}
.footer a { color: var(--c-heading); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; }
  .pl-flow, .pl-feedback, .pl-pulse, .pl-chip { animation: none; }
}

/* ============================== BibTeX ============================== */
.bibtex { position: relative; max-width: var(--w-section); margin: 0 auto; }
.bibtex__code {
  margin: 0; padding: 22px 88px 22px 24px; overflow-x: auto;
  background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--r-md);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; line-height: 1.65;
  color: var(--c-text-strong); white-space: pre;
}
.bibtex__copy {
  position: absolute; top: 12px; right: 12px; padding: 4px 12px;
  font: inherit; font-size: 12px; color: var(--c-accent); background: var(--c-card);
  border: 1px solid var(--c-line); border-radius: 999px; cursor: pointer;
}
.bibtex__copy:hover { border-color: var(--c-accent); background: var(--c-active-bg); }

/* ---------- FOMI project page: indigo / cyan / mint / warm white ---------- */
.fomi {
  --w-text: 1000px;
  --c-bg: #F4F4F0; /* Previous warm background mixed with 5% white. */
  --fomi-indigo: #464B71;
  --fomi-cyan: #118AB2;
  --fomi-mint: #7CD5C7;
  --font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--c-heading);
  overflow-x: visible;
}
.fomi a, .fomi button, .fomi summary { -webkit-tap-highlight-color: transparent; }
.fomi :focus-visible { outline: 3px solid var(--fomi-cyan); outline-offset: 5px; }
.fomi section[id] { scroll-margin-top: 90px; }
.fomi figure { min-width: 0; }
.skip-link { position: fixed; z-index: 100; top: 10px; left: 16px; padding: 10px 16px; background: #fff; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 0; z-index: 30; background: rgba(244,244,240,.95); border-bottom: 1px solid rgba(70,75,113,.11); backdrop-filter: blur(16px); }
.site-header__inner { max-width: 1200px; min-height: 76px; padding: 0 40px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.wordmark { display: inline-flex; align-items: center; font-size: 24px; font-weight: 800; letter-spacing: -.06em; text-decoration: none; color: var(--fomi-indigo); }
.brand-dot { color: var(--fomi-cyan); }
.site-nav { display: flex; gap: 26px; }
.site-nav a { font-size: 16px; font-weight: 500; color: var(--c-text); text-decoration: none; padding: 26px 0 24px; border-bottom: 2px solid transparent; }
.site-nav a:hover, .site-nav a.is-active { color: var(--fomi-indigo); border-bottom-color: var(--fomi-indigo); }
.fomi-hero { padding: 64px 40px 42px; max-width: 1200px; margin: auto; }
.hero-copy { max-width: 1160px; margin: auto; text-align: center; }
/* Full-screen mechanism cover; the white mask keeps the paper title legible. */
.fomi--cover .site-header { position: fixed; left: 0; right: 0; background: transparent; border-bottom-color: transparent; backdrop-filter: none; transition: background .25s, border-color .25s; }
.fomi--cover .site-header__inner { justify-content: flex-end; }
.fomi--cover .site-header.is-scrolled { background: rgba(244,244,240,.96); border-bottom-color: rgba(70,75,113,.11); backdrop-filter: blur(16px); }
.fomi .fomi-cover { position: relative; isolation: isolate; min-height: 100vh; min-height: 100svh; display: grid; align-items: center; padding: 110px 40px 96px; overflow: hidden; background: #fff; scroll-margin-top: 0; }
.fomi-cover__media, .fomi-cover__media::after { position: absolute; inset: 0; }
.fomi-cover__media { z-index: -1; pointer-events: none; }
.fomi-cover__media::after { content: ""; background: rgba(255,255,255,.68); }
.fomi-cover__video { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.fomi-cover__content { width: 100%; max-width: 1280px; position: relative; }
.fomi-cover .project-name { font-size: clamp(60px,calc(7.5vw - 12px),99px); margin: 0 0 12px; }
.fomi-cover .project-title { font-size: clamp(27px,calc(3.5vw - 4px),48px); font-weight: 700; line-height: 1.22; }
.fomi-cover .project-authors { margin-top: 28px; }
.fomi-cover .project-affiliations { max-width: 1220px; }
.fomi-cover .hero-actions { margin-top: 28px; gap: 12px; }
.fomi-cover .hero-actions .action { gap: 9px; min-height: 32px; padding: 6px 19px; color: var(--fomi-indigo); font-size: 14px; line-height: 1.4; font-family: inherit; }
.fomi-cover .hero-actions svg { width: 18px; height: 18px; flex: 0 0 18px; }
.fomi-cover .action--resource { border-color: var(--fomi-indigo); background: rgba(255,255,255,.72); opacity: 1; text-shadow: none; cursor: default; }
.fomi-cover a.action--resource[href] { cursor: pointer; }
.fomi-cover .action--resource:hover { transform: none; }
.fomi-cover .action--text { border: 0; background: transparent; }
.fomi-cover__footer { position: absolute; bottom: 25px; left: 40px; right: 40px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.cover-scroll { display: inline-flex; align-items: center; gap: 12px; font-size: 12px; font-weight: 500; letter-spacing: .03em; text-decoration: none; color: var(--fomi-indigo); padding: 10px 0; }
.cover-scroll__line { display: block; width: 38px; height: 1px; background: currentColor; opacity: .5; }
.cover-scroll>span:last-child { display: inline-block; transition: transform .2s; }
.cover-scroll:hover>span:last-child { transform: translateY(3px); }
.cover-motion { display: inline-flex; align-items: center; gap: 8px; font: inherit; font-size: 11px; color: var(--fomi-indigo); background: rgba(255,255,255,.38); border: 1px solid rgba(70,75,113,.2); border-radius: 24px; padding: 8px 12px; cursor: pointer; }
.cover-motion[hidden] { display: none; }
.cover-motion:hover { background: rgba(255,255,255,.75); }
.cover-motion [data-background-icon] { font-size: 12px; line-height: 1; min-width: 12px; }
.fomi--cover .fomi-hero { padding-top: 64px; }
.fomi--cover .hero-figure { margin-top: 0; }
@media (max-width: 900px) {
  .fomi .fomi-cover { padding: 106px 24px 92px; }
  .fomi-cover .project-name { font-size: 68px; }
  .fomi-cover .project-title { font-size: 32px; }
  .fomi-cover .desktop-break { display: none; }
  .fomi-cover__footer { left: 24px; right: 24px; }
}
@media (max-width: 620px) {
  .fomi .fomi-cover { padding: 86px 20px 88px; }
  .fomi-cover__video { object-fit: cover; }
  .fomi-cover .project-name { font-size: 56px; margin: 0 0 10px; }
  .fomi-cover .project-title { font-size: 27px; line-height: 1.2; }
  .fomi-cover .project-authors { margin-top: 22px; }
  .fomi-cover .hero-actions { margin-top: 22px; gap: 8px; }
  .fomi-cover .hero-actions .action { min-height: 30px; padding: 5px 10px; gap: 6px; font-size: 12px; }
  .fomi-cover .hero-actions svg { width: 15px; height: 15px; flex-basis: 15px; }
  .fomi-cover__footer { left: 20px; right: 20px; bottom: 18px; gap: 10px; }
  .cover-scroll { font-size: 11px; gap: 8px; }
  .cover-scroll__line { width: 20px; }
  .cover-motion { font-size: 10px; padding: 7px 9px; }
  .fomi--cover .fomi-hero { padding-top: 40px; }
}
.eyebrow { font-size: 10px; font-weight: 700; letter-spacing: .19em; color: var(--c-accent); display: flex; align-items: center; justify-content: center; gap: 9px; }
.eyebrow>span { width: 6px; height: 6px; border-radius: 50%; background: var(--fomi-cyan); box-shadow: 0 0 0 4px rgba(124,213,199,.23); }
.project-name { display: block; color: var(--fomi-indigo); font-size: clamp(66px,7.6vw,102px); font-weight: 800; line-height: 1.08; letter-spacing: -.06em; margin: 18px 0 14px; }
.title-colon { color: inherit; }
.project-title { display: block; font-size: clamp(27px,3.2vw,46px); font-weight: 600; line-height: 1.25; letter-spacing: -.038em; text-wrap: balance; }
.project-deck { color: var(--c-text); font-size: 15px; line-height: 1.7; max-width: 680px; margin: 20px auto 25px; text-wrap: balance; }
.project-authors { margin-top: 25px; display: flex; justify-content: center; flex-wrap: wrap; gap: 5px 22px; max-width: 1120px; margin: 25px auto 0; font-size: 18px; color: var(--c-text-strong); line-height: 1.7; }
.project-authors span { white-space: nowrap; }
.project-authors sup { color: var(--c-accent); margin-left: 2px; font-size: .7em; }
.project-affiliations { display: flex; justify-content: center; flex-wrap: wrap; gap: 4px 20px; font-size: 16px; color: var(--c-text); margin: 12px auto 0; line-height: 1.7; }
.institution-logos { display: flex; align-items: center; justify-content: center; gap: 60px; margin: 26px auto 0; }
.affiliation-logo { display: flex; align-items: center; justify-content: center; flex: 0 0 86px; height: 78px; }
.affiliation-logo img { width: 64px; height: 64px; object-fit: contain; }
.affiliation-logo--wide { flex-basis: 150px; }
.affiliation-logo--wide img { width: 150px; height: auto; }
.affiliation-logo--sustech img { width: 116px; max-width: none; height: auto; }
.author-notes { margin-top: 7px; font-size: 15px; color: var(--c-muted); }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 10px; margin-top: 28px; }
.action { display: inline-flex; gap: 22px; align-items: center; border-radius: 7px; padding: 12px 20px; text-decoration: none; font-size: 12px; font-weight: 600; border: 1px solid transparent; transition: background .2s, transform .2s; }
.action:hover { transform: translateY(-2px); }
.action--primary { color: #fff; background: var(--fomi-indigo); }
.action--primary:hover { background: #343958; }
.action--secondary { background: #fff; border-color: #D9DDDF; color: var(--fomi-indigo); }
.action--secondary span { color: var(--c-accent); }
.action--text { color: var(--c-text); padding-left: 12px; padding-right: 12px; }
.action--text:hover { color: var(--c-accent); }
.overview-heading { max-width: var(--w-text); margin: 0 auto 40px; text-align: center; }
.fomi .overview-heading h2 { font-size: 40px; line-height: 1.3; letter-spacing: 0; }
.overview-heading>p { margin-top: 16px; font-size: 18px; line-height: 1.8; color: var(--c-text); }
.hero-figure { margin: 46px 0 0; padding: 18px 22px 12px; border: 0; background: #fff; border-radius: 14px; box-shadow: none; overflow: hidden; }
.teaser-controls { display: flex; justify-content: flex-end; padding-top: 10px; font-size: 12px; }
.figure-bar { display: flex; justify-content: space-between; align-items: center; padding: 17px 1px; font-size: 10px; font-weight: 600; letter-spacing: .09em; color: var(--c-muted); }
.figure-bar>span:first-child { display: flex; align-items: center; gap: 8px; }
.status-dot { width: 6px; height: 6px; background: var(--fomi-mint); border-radius: 50%; }
.hero-figure img { width: 100%; height: auto; }
.teaser-artwork { position: relative; isolation: isolate; }
.teaser-artwork>img { display: block; }
.teaser-flow { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; opacity: .78; }
.teaser-flow__motion { display: none; opacity: 0; transition: opacity 1.8s ease-out; }
.js .teaser-flow__motion { display: block; }
.is-flow-ready .teaser-flow__motion { opacity: 1; }
.teaser-flow__ribbon { --flow-phase: -2.5s; }
.teaser-flow__ribbon--right-upper { --flow-phase: -3.058s; }
.teaser-flow__ribbon--left-lower { --flow-phase: -3.475s; }
.teaser-flow__ribbon--right-lower { --flow-phase: -4.025s; }
.teaser-flow__ribbon--bottom { --flow-phase: -3.192s; }
.teaser-flow__sweep { animation-duration: 10s; animation-delay: var(--flow-phase); animation-timing-function: linear; animation-iteration-count: infinite; animation-play-state: paused; }
.teaser-flow__sweep--left { animation-name: teaser-flow-left, teaser-flow-emerge; }
.teaser-flow__sweep--right { animation-name: teaser-flow-right, teaser-flow-emerge; }
.teaser-flow__sweep--down { animation-name: teaser-flow-down, teaser-flow-emerge; }
.teaser-flow__sweep--offset { animation-delay: calc(var(--flow-phase) - 5s); }
.is-flowing .teaser-flow__sweep { animation-play-state: running; }
@keyframes teaser-flow-left { from { transform: translateX(150px); } to { transform: translateX(-160px); } }
@keyframes teaser-flow-right { from { transform: translateX(-150px); } to { transform: translateX(160px); } }
@keyframes teaser-flow-down { from { transform: translateY(-220px); } to { transform: translateY(175px); } }
@keyframes teaser-flow-emerge {
  0%, 10% { opacity: 0; }
  25% { opacity: .22; }
  50% { opacity: .7; }
  70%, 92% { opacity: 1; }
  100% { opacity: 0; }
}
.figure-controls { display: flex; align-items: center; gap: 14px; }
.teaser-motion { display: inline-flex; align-items: center; gap: 6px; padding: 4px 8px; border: 1px solid var(--c-line); border-radius: 6px; background: transparent; color: var(--fomi-indigo); font: inherit; letter-spacing: 0; white-space: nowrap; cursor: pointer; }
.teaser-motion[hidden] { display: none; }
.teaser-motion:hover { border-color: var(--fomi-indigo); background: #F5F5F8; }
.teaser-motion:focus-visible { outline: 2px solid var(--fomi-indigo); outline-offset: 3px; }
@media (max-width: 620px) {
  .figure-bar { gap: 10px; }
  .figure-bar>span:first-child { min-width: 0; flex: 1; }
  .figure-controls>span { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .js .teaser-flow__motion { display: none; }
  .teaser-flow__sweep { animation: none; }
}

.hero-metrics { display: grid; grid-template-columns: 1fr 1fr .85fr; margin: 40px 0 0; padding: 0 0 42px; }
.hero-metrics>div { display: flex; flex-direction: column; padding: 4px 30px; border-right: 1px solid #D9DEDD; }
.hero-metrics>div:first-child { padding-left: 14px; }
.hero-metrics>div:last-child { border: 0; }
.metric-value { color: var(--fomi-indigo); font-size: 39px; font-weight: 800; line-height: 1.1; letter-spacing: -.045em; }
.metric-value>span { font-size: 25px; margin-left: 2px; }
.metric-label { font-size: 14px; font-weight: 600; margin-top: 10px; }
.metric-note { color: var(--c-muted); font-size: 13px; margin-top: 6px; }
.fomi-section { padding: 86px 40px; }
.section-white { background: #fff; }
.section-mint { background: #EAF4F1; }
.section-neutral { background: var(--c-bg); }
.section-shell { max-width: 1120px; margin: auto; }
.section-heading { display: block; max-width: var(--w-text); margin: 0 auto 40px; text-align: center; }
.section-heading>div, .section-heading>p { min-width: 0; }
.section-heading>h2, .section-heading>h3 { text-wrap: balance; }
.section-index { font-size: 10px; letter-spacing: .14em; color: var(--fomi-indigo); font-weight: 700; margin-bottom: 14px; text-align: center; }
.fomi h2 { font-size: 40px; }
.fomi h2, .fomi .results-subtitle { text-transform: none; font-weight: 700; color: var(--fomi-indigo); text-align: center; letter-spacing: 0; line-height: 1.3; }
.section-heading>p { margin-top: 16px; font-size: 18px; color: var(--c-text); line-height: 1.8; padding: 0; }
#demo .section-heading>p { text-align: center; }
#demo .section-heading>p strong { white-space: nowrap; }
.fomi .demos__stage { display: grid; grid-template-columns: min(156px, calc(20% - 64px)) minmax(0,1fr); align-items: stretch; gap: 8px 24px; margin: 0; }
.fomi .demos__player { grid-column: 2; grid-row: 1; max-width: none; border-radius: 12px; border: 0; background: #fff; }
.fomi .demos__player video { object-fit: contain; }
.fomi .demos__list { grid-column: 1; grid-row: 1; justify-self: stretch; flex-direction: column; justify-content: space-between; gap: 12px; min-width: 0; margin: 0; padding: 0; overflow: visible; background: transparent; box-shadow: none; }
.fomi .thumb { width: 100%; border: 2px solid transparent; border-radius: 9px; box-shadow: 0 4px 8px -2px rgba(70,75,113,.18); transition: border-color .3s, box-shadow .2s; }
.fomi .thumb img { width: 100%; height: auto; aspect-ratio: 16 / 9; }
.fomi .thumb__label { font-size: 13px; line-height: 18px; padding: 2px 8px; color: var(--fomi-indigo); font-weight: 700; }
.fomi .thumb:hover, .fomi .thumb:active, .fomi .thumb[aria-pressed="true"] { border-color: rgba(70,75,113,.7); }
.fomi .thumb[aria-pressed="true"] { box-shadow: 0 6px 12px -3px rgba(70,75,113,.24); }
.fomi .thumb:focus-visible { outline-color: rgba(70,75,113,.7); }
.fomi .demos__speed { grid-column: 2; grid-row: 2; margin: 0; text-align: right; font-size: 12px; line-height: 1.5; color: var(--c-muted); }
.cross-embodiment { margin-top: 56px; padding-top: 40px; border-top: 1px solid var(--c-line); }
.cross-embodiment__figure { max-width: 760px; margin: 0 auto; }
.cross-embodiment__player { border: 0; border-radius: 12px; background: #fff; }
.cross-embodiment__player video { object-fit: contain; }
.cross-embodiment__figure figcaption { display: flex; align-items: baseline; justify-content: flex-end; gap: 16px; margin-top: 10px; color: var(--fomi-indigo); font-size: 14px; font-weight: 500; }
.cross-embodiment__figure .video-speed { color: var(--c-muted); font-size: 12px; font-weight: 400; }
@media (max-width: 900px) {
  .fomi .demos__stage { grid-template-columns: minmax(0,1fr); gap: 8px; }
  .fomi .demos__player { grid-column: 1; grid-row: 2; }
  .fomi .demos__list { grid-column: 1; grid-row: 1; flex-direction: row; justify-content: start; overflow-x: auto; gap: 10px; padding: 7px; margin: -7px -7px 1px; scroll-snap-type: x proximity; }
  .fomi .demos__speed { grid-column: 1; grid-row: 3; }
  .fomi .thumb { flex: 0 0 130px; scroll-snap-align: start; }
}
.principle-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 32px; margin-bottom: 40px; }
.principle-grid article { padding: 24px 0 8px; border-top: 1px solid var(--c-line); }
.principle-number { color: var(--c-accent); font-size: 11px; font-weight: 600; }
.principle-grid h3 { margin: 0 0 12px; white-space: nowrap; }
.principle-grid p { font-size: 14px; line-height: 1.9; color: var(--c-text); }
.collection-notes { max-width: var(--w-text); margin: 16px auto 0; font-size: 18px; line-height: 1.8; color: var(--c-text); }
.collection-notes p+p { margin-top: 12px; }
.collection-videos { margin-top: 36px; scroll-margin-top: 90px; }
.collection-videos + .collection-videos { margin-top: 56px; padding-top: 40px; border-top: 1px solid var(--c-line); }
.collection-videos>h3, .cross-embodiment>h3 { margin-bottom: 22px; text-align: left; }
.fomi .subsection-title { font-size: 22px; line-height: 1.3; font-weight: 600; letter-spacing: -.02em; color: var(--fomi-indigo); }
.results-interpretation { margin: 0 0 24px; font-size: 15px; line-height: 1.85; color: var(--c-text); }
.collection-notes>p { text-align: center; }
.results-interpretation { text-align: justify; text-align-last: left; }
.paper-figure { margin: 0; padding: 22px; border: 0; border-radius: 12px; background: #fff; }
.paper-figure img { width: 100%; height: auto; }
.paper-figure a { display: block; border-radius: 6px; }
.paper-figure figcaption { font-size: 13px; color: var(--c-muted); line-height: 1.7; margin-top: 16px; }
.figure-tag { font-size: 9px; font-weight: 700; color: var(--c-accent); letter-spacing: .08em; margin-right: 12px; }
.figure-hint { color: var(--c-accent); white-space: nowrap; }
.mode-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; }
.mode-card { background: #fff; padding: 30px; border: 1px solid #DDE9E4; border-radius: 12px; position: relative; overflow: hidden; }
.mode-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--fomi-mint); }
.mode-card--teleop::before { background: var(--fomi-cyan); }
.mode-card__top { display: flex; align-items: center; justify-content: space-between; }
.mode-label { color: var(--c-accent); font-size: 10px; letter-spacing: .1em; font-weight: 700; }
.mode-symbol { display: flex; justify-content: center; align-items: center; width: 34px; height: 34px; background: #ECF7F3; border-radius: 50%; color: var(--c-accent); font-size: 20px; }
.mode-card--teleop .mode-symbol { background: #EBF4F7; }
.mode-card h3 { font-size: 30px; line-height: 1.15; letter-spacing: -.035em; margin: 21px 0 16px; }
.mode-card>p { color: var(--c-text); font-size: 13px; line-height: 1.85; }
.mode-footer { display: flex; gap: 8px; align-items: baseline; padding-top: 19px; margin-top: 24px; border-top: 1px solid var(--c-line); color: var(--c-text-strong); font-size: 11px; line-height: 1.7; }
.small-dot { width: 6px; height: 6px; flex: none; border-radius: 50%; background: var(--fomi-cyan); }
.sensor-layout { display: grid; grid-template-columns: .75fr 1.25fr; align-items: center; gap: 44px; margin-top: 48px; }
.sensor-layout h3, .cross-platform h3 { font-size: 25px; line-height: 1.25; letter-spacing: -.03em; margin-bottom: 14px; }
.sensor-layout p:not(.section-index), .cross-platform p:not(.section-index) { font-size: 13px; line-height: 1.85; color: var(--c-text); }
.sensor-layout p+p { margin-top: 10px; }
.result-row { display: grid; grid-template-columns: minmax(0,1fr); gap: 15px;  align-items: center; padding: 34px 0; border-top: 1px solid var(--c-line); }
.results-group>.section-heading+.result-row { border-top: 0; }
.result-row>.mode-label { grid-column: 1 / -1; }
.result-summary { min-width: 0; }
.result-number { font-size: 66px; letter-spacing: -.05em; line-height: 1.1; margin: 0 0 4px; color: var(--fomi-indigo); font-weight: 800; }
.result-unit { font-size: 13px; color: var(--c-text); }
.result-comparison { display: flex; align-items: center; gap: 10px; margin-top: 15px; font-size: 13px; color: var(--c-text); }
.result-comparison b { background: #E7F5F0; color: #306357; padding: 4px 8px; border-radius: 4px; font-size: 12px; font-weight: 800; }
.completion-stat { margin-top: 24px; display: flex; align-items: center; gap: 10px; }
.completion-stat b { font-size: 21px; color: var(--fomi-indigo); letter-spacing: -.02em; font-weight: 800; }
.completion-stat span { font-size: 13px; color: var(--c-text-strong); }
.baseline-note { font-size: 12px; color: var(--c-muted); margin-top: 5px; }
.fomi .chart { min-width: 0; max-width: 960px; padding: 18px 0; background: transparent; }
.fomi .chart__title { font-size: 20px; line-height: 1.4; font-weight: 600; color: var(--c-text-strong); text-align: center; margin: 0 0 16px; }
.fomi .chart__legend { margin-top: 15px; gap: 28px; }
.fomi .chart__legend li { font-size: 15px; }
.fomi .chart__svg text { font-size: 12px; }
.fomi .chart__tip { font-size: 13px; }
.fomi .chart__swatch { height: 8px; width: 8px; }
@media (min-width: 621px) {
  .result-row { align-items: start; }
  .fomi .result-row .chart { display: flex; flex-direction: column; margin-top: 0; padding: 0; }
  .fomi .result-row .chart__legend { min-height: 26px; align-items: center; }
}
.study-note { border-top: 1px solid var(--c-line); padding: 20px 0 0; font-size: 13px; line-height: 1.9; color: var(--c-muted); max-width: 930px; }
.study-note strong { color: var(--c-text-strong); font-weight: 600; }
.study-note p+p { margin-top: 8px; }
.task-strip { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 24px; margin: 0 0 24px; }
.task-strip>div { border-top: 1px solid #CFD7D5; padding-top: 14px; }
.task-strip span { color: var(--c-accent); font-size: 10px; font-weight: 600; }
.task-strip h3 { font-size: 15px; margin: 8px 0 3px; }
.task-strip p { font-size: 11px; line-height: 1.75; color: var(--c-muted); }
.policy-results { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 60px; margin: 38px 0 20px; }
.policy-results article { padding-left: 23px; border-left: 3px solid var(--fomi-mint); }
.policy-results .mode-label { display: block; min-height: 1.5em; line-height: 1.5; }
.policy-results article+article { border-left-color: var(--fomi-cyan); }
.policy-rate { font-size: 53px; color: var(--fomi-indigo); font-weight: 800; line-height: 1.15; letter-spacing: -.04em; margin: 8px 0 7px; }
.policy-rate span { font-size: 28px; }
.policy-results h4 { font-size: 14px; margin-bottom: 5px; }
.policy-results p:last-child { font-size: 14px; color: var(--c-text); line-height: 1.8; }
.policy-note { color: var(--c-muted); font-size: 11px; line-height: 1.8; margin: 22px 0; }
.figure-details { border-top: 1px solid #D9DEDC; border-bottom: 1px solid #D9DEDC; margin-top: 26px; }
.figure-details summary { display: flex; justify-content: space-between; gap: 20px; cursor: pointer; list-style: none; padding: 18px 0; color: var(--fomi-indigo); font-size: 13px; font-weight: 500; }
.figure-details summary::-webkit-details-marker { display: none; }
.figure-details summary span { color: var(--c-accent); font-size: 18px; }
.figure-details[open] summary span { transform: rotate(45deg); }
.figure-details>.paper-figure { margin: 0 0 20px; }
.sensor-details { margin: 28px 0 0; border-bottom: 0; }
.figure-disclosure summary { padding: 14px 0; align-items: center; }
.figure-disclosure summary span { color: var(--fomi-indigo); }
.figure-disclosure summary .sensor-toggle-text, .figure-disclosure[open] summary .sensor-toggle-text { font-size: 13px; font-weight: 500; letter-spacing: 0; line-height: 1.4; white-space: nowrap; transform: none; }
.figure-disclosure .sensor-toggle-collapse, .figure-disclosure[open] .sensor-toggle-expand { display: none; }
.figure-disclosure[open] .sensor-toggle-collapse { display: inline; }
.figure-disclosure summary:focus-visible { outline: 2px solid var(--fomi-indigo); outline-offset: 4px; }
.figure-disclosure>.paper-figure { max-width: 720px; margin: 0 auto 20px; }
.result-figure-details>.paper-figure { max-width: 960px; }
.result-row>.result-figure-details { grid-column: 1 / -1; margin: 0 0 10px; border: 0; }
.result-row + .result-row { margin-top: 32px; }
.result-row:has(>.result-figure-details) { padding-top: 0; }
.results-subtitle { font-size: 40px; }
.policy-chart .policy-results { display: grid; grid-template-columns: minmax(0,1fr); margin: 48px 0 0; }
.policy-chart:nth-child(2) .policy-results article { border-left-color: var(--fomi-cyan); }
.policy-model { white-space: nowrap; }
.policy-model sub { font-size: .7em; line-height: 0; position: relative; vertical-align: baseline; bottom: -.25em; }
.policy-charts-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 60px; margin-top: 36px; }
.policy-charts-grid.is-expanded { grid-template-columns: minmax(0,1fr); max-width: 1040px; margin-left: auto; margin-right: auto; }
.policy-chart { min-width: 0; display: flex; flex-direction: column; scroll-margin-top: 96px; }
.policy-chart>h4 { margin-bottom: 18px; white-space: normal; }
.policy-chart .paper-figure { margin: 0; padding: 16px; flex: 1; }
.policy-chart a[role="button"] { cursor: zoom-in; }
.is-expanded .policy-chart a[role="button"] { cursor: zoom-out; }
.figure-toggle { padding: 0; border: 0; background: none; color: var(--fomi-indigo); cursor: pointer; text-decoration: underline; text-underline-offset: 3px; white-space: nowrap; }
.figure-toggle:hover { text-decoration-thickness: 2px; }
.cross-platform { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: center; margin-top: 40px; }
.cross-platform .paper-figure { padding: 14px; }
.citation-layout { max-width: var(--w-text); }
.citation-layout>div:first-child { margin-bottom: 40px; text-align: center; }
.citation-layout>div>p:not(.section-index) { font-size: 18px; line-height: 1.8; color: var(--c-text); margin-top: 16px; }
.contact-link { display: inline-block; font-size: 13px; color: var(--c-accent); text-decoration: none; margin-top: 25px; }
.fomi .bibtex { width: 100%; margin: 0; min-width: 0; }
.fomi .bibtex__code { background: #F7F8F6; color: var(--c-text-strong); border: 1px solid #E1E5E2; font-size: 12px; line-height: 1.8; padding: 45px 25px 24px; border-radius: 10px; }
.fomi .bibtex__copy { font-size: 13px; color: var(--c-accent); border-color: var(--c-line); background: white; }
.fomi-footer { padding: 30px 40px; }
.fomi-footer__inner { display: flex; gap: 40px; align-items: center; justify-content: space-between; }
.fomi-footer__project { flex: 1; min-width: 0; }
.fomi-footer__institutions { list-style: none; margin: 0; padding: 0; max-width: 50%; text-align: right; font-size: 12px; line-height: 1.8; color: var(--fomi-indigo); }
.fomi-footer .wordmark { font-size: 22px; }
.fomi-footer p { font-size: 12px; color: var(--c-muted); margin-top: 3px; }
.citation-section { padding-top: 56px; }
.palette-signature { display: flex; gap: 5px; }
.palette-signature i { width: 14px; height: 14px; border-radius: 50%; background: var(--fomi-indigo); }
.palette-signature i:nth-child(2) { background: var(--fomi-cyan); }
.palette-signature i:nth-child(3) { background: var(--fomi-mint); }
.palette-signature i:nth-child(4) { background: #D9D9D6; }
@media (min-width: 1600px) { .fomi-hero { padding-top: 80px; } }
@media (max-width: 980px) {
  .principle-grid { grid-template-columns: 1fr; gap: 20px; }
  .principle-grid article { padding: 20px 0 0; }
  .principle-grid h3 { margin: 0 0 10px; }
}
@media (max-width: 900px) {
  .site-header__inner { padding: 0 24px; gap: 20px; min-height: 66px; }
  .site-nav { gap: 18px; }
  .site-nav a { font-size: 14px; padding: 23px 0 21px; }
  .fomi-hero { padding: 45px 24px 42px; }
  .project-title { font-size: 32px; }
  .project-deck { font-size: 14px; }
  .project-authors { font-size: 17px; gap: 4px 14px; }
  .project-affiliations { font-size: 15px; }
  .fomi-section { padding: 64px 24px; }
  .section-heading { gap: 30px; }
  .section-heading>p, .overview-heading>p, .collection-notes, .citation-layout>div>p:not(.section-index) { font-size: 17px; }
  .hero-metrics>div { padding: 4px 18px; }
  .metric-value { font-size: 33px; }
  .metric-label { font-size: 13px; }
  .metric-note { font-size: 12px; }
  .principle-grid { gap: 22px; }
  .mode-card { padding: 24px; }
  .mode-card h3 { font-size: 26px; }
  .sensor-layout, .cross-platform { gap: 24px; }
  .result-row { gap: 20px; }
  .result-number { font-size: 55px; }
  .policy-charts-grid { grid-template-columns: minmax(0,1fr); gap: 30px; max-width: 760px; margin-left: auto; margin-right: auto; }
  .citation-layout { gap: 26px; grid-template-columns: .6fr 1.4fr; }
  .fomi-footer { padding-inline: 24px; }
}
@media (max-width: 620px) {
  .site-header__inner { min-height: 60px; padding: 0 18px; flex-wrap: wrap; gap: 0; }
  .collection-notes>p, .results-interpretation { text-align: left; }
  .site-header .wordmark { height: 53px; font-size: 22px; }
  .site-nav { order: 3; width: 100%; justify-content: space-between; gap: 8px; }
  .site-nav a { font-size: 14px; padding: 3px 0 11px; }
  .fomi-hero { padding: 34px 18px 29px; }
  .eyebrow { font-size: 8px; letter-spacing: .15em; }
  .project-name { font-size: 72px; margin: 15px 0 15px; }
  .project-title { font-size: 27px; line-height: 1.23; letter-spacing: -.035em; }
  .desktop-break { display: none; }
  .project-deck { font-size: 12px; line-height: 1.75; margin: 18px auto 20px; }
  .project-authors { font-size: 16px; gap: 3px 12px; line-height: 1.75; }
  .project-affiliations { gap: 3px 12px; font-size: 14px; }
  .institution-logos { gap: clamp(12px, 4vw, 20px); margin: 20px auto 0; }
  .affiliation-logo { flex-basis: 46px; height: 54px; }
  .affiliation-logo img { width: 44px; height: 44px; }
  .affiliation-logo--wide { flex-basis: 106px; }
  .affiliation-logo--wide img { width: 106px; height: auto; }
  .affiliation-logo--sustech img { width: 82px; height: auto; }
  .author-notes { font-size: 14px; }
  .hero-actions { margin-top: 22px; gap: 8px; }
  .action { padding: 10px 13px; font-size: 11px; gap: 12px; }
  .action--text { padding-left: 7px; padding-right: 7px; }
  .overview-heading { margin-bottom: 28px; }
  .fomi .overview-heading h2 { font-size: 29px; }
  .overview-heading>p { font-size: 16px; }
  .hero-figure { margin-top: 30px; padding: 12px 8px 8px; border-radius: 10px; }
  .figure-bar { font-size: 8px; padding: 11px 3px; letter-spacing: .06em; }
  .figure-bar>span:last-child { display: none; }
  .hero-metrics { margin-top: 23px; gap: 0; padding-bottom: 29px; grid-template-columns: 1fr 1fr; }
  .hero-metrics>div { padding: 5px 12px; }
  .hero-metrics>div:first-child { padding-left: 0; }
  .hero-metrics>div:nth-child(2) { padding-right: 0; border: none; }
  .hero-metrics>div:last-child { grid-column: 1 / -1; flex-direction: row; align-items: center; flex-wrap: wrap; gap: 7px; margin-top: 17px; padding: 15px 0 0; border-top: 1px solid var(--c-line); }
  .hero-metrics>div:last-child .metric-value { font-size: 22px; margin-right: 3px; }
  .hero-metrics>div:last-child .metric-label { margin: 0; }
  .hero-metrics>div:last-child .metric-note { width: 100%; margin-top: 0; }
  .metric-value { font-size: 32px; }
  .metric-value>span { font-size: 20px; }
  .metric-label { font-size: 12px; line-height: 1.6; }
  .metric-note { font-size: 11px; line-height: 1.7; }
  .fomi-section { padding: 48px 18px; }
  .section-heading { display: block; margin-bottom: 26px; }
  .section-index { font-size: 9px; margin-bottom: 12px; }
  .fomi h2 { font-size: 29px; }
  .results-subtitle { font-size: 29px; }
  .cross-embodiment { margin-top: 36px; padding-top: 28px; }
  .collection-videos + .collection-videos { margin-top: 36px; padding-top: 28px; }
  .result-row + .result-row { margin-top: 24px; }
  .section-heading>p { margin-top: 16px; font-size: 16px; }
  .collection-notes { font-size: 16px; }
  #design .section-heading>p, #demo .section-heading>p { text-align: center; }
  .principle-grid { grid-template-columns: 1fr; gap: 17px; margin-bottom: 24px; }
  .principle-grid article { padding-top: 16px; }
  .principle-grid h3 { margin-top: 0; }
  .principle-grid p { font-size: 14px; }
  .paper-figure { padding: 11px; border-radius: 8px; }
  .paper-figure figcaption { font-size: 11px; margin-top: 11px; }
  .figure-tag { display: block; margin-bottom: 5px; }
  .figure-hint { display: inline-block; }
  .mode-grid { grid-template-columns: 1fr; gap: 17px; }
  .mode-card { padding: 23px; }
  .mode-card h3 { font-size: 27px; }
  .mode-card>p { font-size: 12px; }
  .mode-footer { font-size: 10px; }
  .sensor-layout, .cross-platform { grid-template-columns: 1fr; gap: 22px; margin-top: 30px; }
  .sensor-layout h3 { font-size: 24px; }
  .sensor-layout p:not(.section-index), .cross-platform p:not(.section-index) { font-size: 12px; }
  .result-row { grid-template-columns: 1fr; gap: 22px; padding: 26px 0; }
  .result-summary { padding: 0 3px; }
  .result-number { font-size: 53px; }
  .result-comparison { margin-top: 12px; }
  .completion-stat { margin-top: 16px; }
  .fomi .chart { padding: 0; }
  .fomi .chart__title { font-size: 18px; }
  .fomi .chart__legend { margin-top: 10px; }
  .study-note { font-size: 12px; padding-top: 17px; }
  .task-strip { grid-template-columns: 1fr 1fr; gap: 20px; }
  .task-strip h3 { font-size: 14px; }
  .task-strip p { font-size: 10px; }
  .policy-results { grid-template-columns: 1fr; gap: 28px; margin-top: 28px; }
  .policy-results article { padding-left: 17px; }
  .policy-rate { font-size: 48px; }
  .policy-note { font-size: 10px; }
  .figure-details summary { font-size: 12px; line-height: 1.7; }
  .cross-platform h3 { font-size: 23px; }
  .citation-layout { grid-template-columns: 1fr; gap: 26px; }
  .citation-layout>div>p:not(.section-index) { max-width: none; font-size: 16px; }
  .contact-link { margin-top: 15px; }
  .fomi .bibtex__code { font-size: 11px; padding: 43px 16px 20px; }
  .fomi-footer { padding: 25px 18px; }
  .fomi-footer__inner { flex-direction: column; align-items: stretch; gap: 18px; }
  .fomi-footer__institutions { max-width: none; }
  .fomi-footer p { font-size: 11px; }
  .palette-signature { width: 100%; }
}
@media (max-width: 360px) {
  .principle-grid article { display: block; }
  .principle-grid h3 { margin-top: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  .fomi *, .fomi *::before, .fomi *::after { animation: none !important; transition: none !important; }
}