/* The local Antigravity replica adapted to CMSG. Homepage styles are isolated
   from the existing reading layouts and their academic theme. */
.page--home {
  --ag-ink: #1f1f1f;
  --ag-muted: #62656a;
  --ag-line: #e5e7eb;
  --ag-soft: #f6f7f8;
  --ag-blue: #2457c5;
  --ag-radius: 24px;
  --ag-font: var(--font-interface);
  background: #fff;
  color: var(--ag-ink);
  font: 400 16px/1.6 var(--ag-font);
}
.page--home :focus-visible { outline: 2px solid var(--ag-blue); outline-offset: 5px; }
.ag-shell { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }
.ag-hero { position: relative; display: grid; min-height: max(680px, 100svh); overflow: hidden; isolation: isolate; background: #fff; }
.ag-hero__particles { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.ag-hero__particles canvas { display: block; width: 100%; height: 100%; }
.ag-hero__content { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 28px; padding: 112px 24px 72px; text-align: center; }
.ag-hero__brand { display: flex; align-items: center; justify-content: center; gap: 12px; font-size: 19px; line-height: 1.4; letter-spacing: -.025em; }
.ag-hero__brand img { flex-shrink: 0; }
.ag-hero__title { width: min(920px, 100%); margin: 4px 0 0; color: var(--ag-ink); font-size: clamp(48px, 5.4vw, 76px); font-weight: 400; letter-spacing: -.045em; line-height: 1.1; text-wrap: balance; }
.ag-hero__line { display: block; min-height: 1.1em; }
.ag-hero__line-text { position: relative; display: inline-block; }
/* Full-width end punctuation hangs outside the centered Chinese text body. */
.ag-hero__line-text--hanging { margin-inline-end: -1em; }
.ag-hero__line-text.is-typing::after { content: ""; position: absolute; top: .1em; left: 100%; width: 2px; height: .82em; margin-left: 4px; background: currentColor; animation: ag-caret 900ms steps(1) infinite; }
.ag-hero__affiliation { margin: 0; color: #5f6368; font-size: 16px; line-height: 1.5; }
.ag-hero__actions { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 6px; }
.ag-button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 14px 28px; border: 1px solid transparent; border-radius: 999px; font-size: 15px; font-weight: 500; line-height: 1.4; white-space: nowrap; transition: background-color 180ms ease-out, color 180ms ease-out, transform 180ms ease-out; }
.ag-button--dark { background: var(--ag-ink); color: #fff; }
.ag-button--dark:hover { background: #35383b; }
.ag-button--soft { background: #f0f1f3; color: var(--ag-ink); }
.ag-button--soft:hover { background: #e5e7eb; }
.ag-button--light { background: #fff; color: var(--ag-ink); }
.ag-button--light:hover { background: #e9ebee; }
.ag-button:active { transform: scale(.98); }
.ag-arrow { flex-shrink: 0; transition: transform 180ms ease-out; }
.ag-link { display: inline-flex; gap: 12px; align-items: center; min-height: 44px; color: var(--ag-blue); font-size: 15px; font-weight: 500; }
.ag-link:hover { color: #153b8c; }
.ag-link:hover .ag-arrow { transform: translateX(3px); }
.page--home h2 { margin: 0; font-size: clamp(32px, 3.6vw, 50px); font-weight: 400; line-height: 1.15; letter-spacing: -.035em; text-wrap: balance; }
.ag-research { padding-top: 120px; padding-bottom: 48px; }
.ag-direction { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(48px, 7vw, 96px); align-items: center; margin-bottom: 144px; }
.ag-direction__media { display: grid; place-items: center; min-height: 430px; padding: 38px; overflow: hidden; border-radius: var(--ag-radius); background: var(--ag-soft); }
.ag-direction__media img { display: block; width: 100%; height: auto; border-radius: 6px; }
.ag-direction__copy p { margin: 24px 0 20px; max-width: 480px; color: var(--ag-muted); font-size: 18px; line-height: 1.65; }
.ag-direction--reverse { grid-template-columns: 1fr 1.15fr; }
.ag-direction--reverse .ag-direction__media { grid-column: 2; grid-row: 1; }
.ag-direction--reverse .ag-direction__copy { grid-column: 1; grid-row: 1; }
.ag-direction-wide__heading { display: grid; grid-template-columns: 1fr 1fr; gap: 96px; margin-bottom: 40px; align-items: start; }
.ag-direction-wide__heading h2 { max-width: 480px; }
.ag-direction-wide__title-part { display: inline-block; white-space: nowrap; }
.ag-direction-wide__heading p { margin: 0 0 20px; color: var(--ag-muted); font-size: 18px; line-height: 1.65; }
.ag-direction-wide__media { display: grid; place-items: center; padding: 56px; background: var(--ag-soft); border-radius: var(--ag-radius); }
.ag-direction-wide__media img { display: block; width: min(820px, 100%); height: auto; border-radius: 8px; }
.ag-section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; margin-bottom: 48px; }
.ag-section-heading .ag-link { flex-shrink: 0; }
.ag-publications { padding: 104px 0 128px; }
.ag-paper-list { border-top: 1px solid var(--ag-line); }
.ag-paper { display: grid; grid-template-columns: 190px 1fr; gap: 56px; padding: 32px 0; border-bottom: 1px solid var(--ag-line); }
.ag-paper__meta { display: flex; flex-direction: column; gap: 6px; color: var(--ag-muted); font-size: 14px; }
.ag-paper__meta time { color: var(--ag-ink); font-size: 18px; font-variant-numeric: tabular-nums; }
.ag-paper h3 { margin: 0 0 12px; font-size: 21px; line-height: 1.45; font-weight: 400; letter-spacing: -.02em; }
.ag-paper h3 a { display: flex; align-items: baseline; gap: 20px; }
.ag-paper h3 a:hover { color: var(--ag-blue); }
.ag-paper h3 .ag-arrow { width: 18px; height: 18px; }
.ag-paper p { margin: 0; color: var(--ag-muted); font-size: 14px; }
.ag-team { padding: 104px 0 112px; background: var(--ag-soft); }
.ag-faculty { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.ag-person { display: grid; grid-template-columns: 190px 1fr; gap: 28px; align-items: center; }
.ag-person__portrait { display: block; overflow: hidden; border-radius: 16px; background: #e9ecef; }
.ag-person__portrait img { display: block; width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; object-position: center top; }
.ag-person__role { margin: 0 0 9px; color: var(--ag-muted); font-size: 13px; }
.ag-person h3 { margin: 0 0 14px; font-size: 25px; line-height: 1.25; font-weight: 400; letter-spacing: -.025em; }
.ag-person h3 a:hover { color: var(--ag-blue); }
.ag-person__info > p:not(.ag-person__role) { margin: 0 0 14px; color: var(--ag-muted); font-size: 15px; }
.ag-person__email { display: block; color: var(--ag-muted); font-size: 13px; overflow-wrap: anywhere; }
.ag-person__email:hover { color: var(--ag-blue); }
.ag-tools { padding: 120px 0; }
.ag-tools__panel { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; padding: 72px; background: #202124; color: #fff; border-radius: 28px; }
.ag-tools__intro p { margin: 24px 0 32px; max-width: 340px; color: #b6babf; font-size: 17px; }
.ag-tools__list { border-top: 1px solid #4d5157; }
.ag-tool { display: flex; align-items: center; gap: 24px; padding: 28px 0; border-bottom: 1px solid #4d5157; }
.ag-tool > .ag-arrow { margin-left: auto; }
.ag-tool h3 { margin: 0 0 12px; font-size: 23px; font-weight: 400; letter-spacing: -.025em; }
.ag-tool p { max-width: 340px; margin: 0; color: #b6babf; font-size: 15px; }
.ag-tool:hover .ag-arrow { transform: translateX(4px); }
.ag-news { padding-bottom: 112px; }
.ag-news__list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
.ag-news-item { display: flex; flex-direction: column; align-items: flex-start; padding-top: 24px; border-top: 1px solid var(--ag-line); }
.ag-news-item__meta { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-bottom: 20px; font-size: 13px; color: var(--ag-muted); }
.ag-news-item time { font-variant-numeric: tabular-nums; }
.ag-news-item h3 { margin: 0 0 26px; font-size: 22px; line-height: 1.4; letter-spacing: -.025em; font-weight: 400; }
.ag-news-item__arrow { margin-top: auto; color: var(--ag-blue); }
.ag-news-item:hover h3 { color: var(--ag-blue); }
.ag-join { padding: 112px 0 120px; border-top: 1px solid var(--ag-line); }
.ag-join__content { display: flex; flex-direction: column; align-items: center; text-align: center; }
.ag-join__content h2 { max-width: 820px; font-size: clamp(38px, 4.7vw, 64px); }
.ag-join__content p { max-width: 650px; margin: 28px 0 32px; color: var(--ag-muted); font-size: 17px; }
html[lang="zh"] .page--home h1, html[lang="zh"] .page--home h2, html[lang="zh"] .page--home h3,
html[lang="zh"] .ag-hero__brand { letter-spacing: 0; }
@keyframes ag-caret { 50% { opacity: 0; } }
@media (max-width: 980px) {
  .ag-shell { width: calc(100% - 48px); }
  .ag-direction { gap: 40px; margin-bottom: 104px; }
  .ag-direction__media { min-height: 360px; padding: 24px; }
  .ag-direction__copy p, .ag-direction-wide__heading p { font-size: 16px; }
  .ag-direction-wide__heading { gap: 40px; }
  .ag-faculty { gap: 32px; }
  .ag-person { grid-template-columns: 140px 1fr; gap: 20px; }
  .ag-person h3 { font-size: 21px; }
  .ag-tools__panel { padding: 48px; gap: 48px; }
}
@media (max-width: 760px) {
  .ag-hero { min-height: max(620px, 100svh); }
  .ag-hero__content { gap: 24px; padding: 108px 20px 64px; }
  .ag-hero__brand { max-width: 340px; font-size: 16px; }
  .ag-hero__brand img { width: 30px; height: 30px; }
  .ag-hero__title { font-size: clamp(34px, 7.5vw, 56px); letter-spacing: -.045em; }
  .ag-hero__affiliation { font-size: 14px; }
  .ag-button { min-height: 48px; padding: 12px 22px; font-size: 14px; }
  .ag-research { padding-top: 72px; padding-bottom: 0; }
  .ag-direction, .ag-direction--reverse { grid-template-columns: 1fr; gap: 32px; margin-bottom: 88px; }
  .ag-direction__copy, .ag-direction--reverse .ag-direction__copy { grid-column: 1; grid-row: 1; }
  .ag-direction__media, .ag-direction--reverse .ag-direction__media { grid-column: 1; grid-row: 2; min-height: 280px; padding: 28px; }
  .ag-direction__copy p { max-width: none; margin: 20px 0 10px; }
  .ag-direction-wide__heading { grid-template-columns: 1fr; gap: 20px; margin-bottom: 28px; }
  .ag-direction-wide__heading p { margin-bottom: 10px; }
  .ag-direction-wide__media { padding: 24px; }
  .ag-section-heading { flex-direction: column; align-items: flex-start; gap: 16px; margin-bottom: 28px; }
  .ag-publications { padding: 88px 0; }
  .ag-paper { grid-template-columns: 1fr; gap: 12px; padding: 24px 0; }
  .ag-paper__meta { flex-direction: row; align-items: baseline; gap: 16px; }
  .ag-paper__meta time { font-size: 14px; }
  .ag-paper h3 { font-size: 19px; }
  .ag-team { padding: 72px 0 80px; }
  .ag-faculty { grid-template-columns: 1fr; gap: 36px; }
  .ag-person { grid-template-columns: 140px 1fr; }
  .ag-tools { padding: 80px 0; }
  .ag-tools__panel { grid-template-columns: 1fr; gap: 40px; padding: 36px 28px; border-radius: 20px; }
  .ag-tools__intro p { max-width: none; }
  .ag-news { padding-bottom: 72px; }
  .ag-news__list { grid-template-columns: 1fr; gap: 28px; }
  .ag-news-item { display: grid; grid-template-columns: 1fr 24px; gap: 12px 20px; }
  .ag-news-item__meta { grid-column: 1 / -1; margin: 0; }
  .ag-news-item h3 { margin: 0; font-size: 20px; }
  .ag-news-item__arrow { align-self: center; }
  .ag-join { padding: 80px 0; }
  .ag-join__content p { font-size: 16px; }
}
@media (max-width: 400px) {
  .ag-shell { width: calc(100% - 40px); }
  .ag-hero__content { padding-inline: 16px; }
  .ag-hero__title { font-size: 32px; }
  .ag-hero__actions { gap: 8px; }
  .ag-button { padding-inline: 18px; }
  .ag-person { grid-template-columns: 110px 1fr; gap: 18px; }
  .ag-person h3 { font-size: 19px; }
}
@media (prefers-reduced-motion: reduce) {
  .page--home *, .page--home *::before, .page--home *::after { animation: none !important; transition: none !important; }
  .page--home .reveal { opacity: 1; transform: none; }
}