:root {
  --ink: #102033;
  --ink-strong: #071426;
  --muted: #5d6978;
  --muted-strong: #39495d;
  --page: #f4f7fa;
  --paper: #ffffff;
  --paper-soft: #f8fafc;
  --line: #d9e2eb;
  --line-strong: #bfccd9;
  --brand: #0a3b78;
  --brand-strong: #062853;
  --brand-soft: #e8f0f8;
  --brand-veil: rgba(10, 59, 120, 0.08);
  --gold: #b98b33;
  --gold-soft: rgba(185, 139, 51, 0.14);
  --teal: #39736a;
  --teal-soft: rgba(57, 115, 106, 0.12);
  --shadow-sm: 0 3px 12px rgba(7, 20, 38, 0.025);
  --shadow-md: 0 12px 32px rgba(7, 20, 38, 0.055);
  --radius: 8px;
  --content: 1200px;
  --gutter: 24px;
  --card-padding: 24px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --type-body: 1rem;
  --type-label: 0.875rem;
  --type-card: 1.25rem;
  --type-section: clamp(1.875rem, 1.3rem + 1.8vw, 2.625rem);
  --type-hero: clamp(2.125rem, 1.1rem + 3.3vw, 3.625rem);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    linear-gradient(180deg, #ffffff 0, #f4f7fa 520px),
    var(--page);
  font-family: var(--font-sans);
  font-size: var(--type-body);
  line-height: 1.72;
}

html[lang="en"] body {
  font-family: var(--font-sans);
}

section[id] {
  scroll-margin-top: 92px;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

img,
video,
iframe {
  display: block;
  max-width: 100%;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 16px;
  z-index: 100;
  transform: translateY(-140%);
  padding: 10px 14px;
  border-radius: var(--radius);
  color: #fff;
  background: var(--brand);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell {
  width: 100%;
  overflow: clip;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 13px max(var(--gutter), calc((100% - var(--content)) / 2));
  border-bottom: 1px solid rgba(217, 226, 235, 0.94);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(18px);
}

.topbar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--brand);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 190px;
}

.brand-mark {
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  object-fit: contain;
}

.brand-copy {
  display: grid;
  gap: 1px;
  line-height: 1.12;
}

.brand-copy strong {
  color: var(--ink-strong);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-copy span {
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0;
}

.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
  min-width: 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  min-width: 0;
}

.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 10px;
  border-radius: 6px;
  color: var(--muted-strong);
  font-size: 0.94rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  transition: color 160ms ease, background 160ms ease;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--brand);
  background: var(--brand-soft);
}

.language-switch {
  display: inline-flex;
  flex: 0 0 auto;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f3f6f9;
}

.language-button {
  min-width: 52px;
  min-height: 34px;
  padding: 0 12px;
  border: 0;
  border-radius: 6px;
  color: var(--muted-strong);
  background: transparent;
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease;
}

.language-button:hover,
.language-button:focus-visible {
  color: var(--brand);
}

.language-button.is-active {
  color: #fff;
  background: var(--brand);
}

.section {
  width: min(var(--content), calc(100% - 2 * var(--gutter)));
  margin: 0 auto;
  padding: 82px 0;
}

.section-tinted {
  background:
    linear-gradient(180deg, #eef4f8, #f6f9fb);
  box-shadow: 0 0 0 100vmax #f2f6f9;
  clip-path: inset(0 -100vmax);
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  width: 100%;
  min-height: 500px;
  margin: 0;
  padding: 48px 0 0;
  border-radius: 0;
  color: var(--ink);
  background: #e8f0f5;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  /* Official Jilin University image: https://www.jlu.edu.cn/info/1001/36171.htm */
  background: url("assets/images/hero-jlu-dingxin-clean.jpg") center 48% / cover no-repeat;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(244, 249, 252, 0.78) 0%, rgba(244, 249, 252, 0.84) 68%, rgba(244, 249, 252, 0.92) 100%);
}

.hero-copy {
  position: relative;
  display: grid;
  justify-items: center;
  width: min(var(--content), calc(100% - 2 * var(--gutter)));
  margin: 0 auto;
  min-width: 0;
  text-align: center;
}

.eyebrow,
.section-kicker,
.team-role,
.update-item-meta,
.meta-pill,
.paper-venue,
.team-group-meta {
  letter-spacing: 0;
}

.eyebrow {
  justify-self: start;
  margin: 0 0 16px;
  color: var(--brand);
  font-size: var(--type-label);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.7;
  text-align: left;
}

.hero h1,
.section-heading h2,
.pillar-card h3,
.updates-card-header h3,
.team-card h3,
.team-group-header h3,
.gallery-preview-copy h3,
.outcomes-panel-header h3,
.contact-card h3 {
  margin: 0;
  font-family: var(--font-sans);
  letter-spacing: 0;
}

html[lang="en"] .hero h1,
html[lang="en"] .section-heading h2,
html[lang="en"] .pillar-card h3,
html[lang="en"] .updates-card-header h3,
html[lang="en"] .team-card h3,
html[lang="en"] .team-group-header h3,
html[lang="en"] .gallery-preview-copy h3,
html[lang="en"] .outcomes-panel-header h3,
html[lang="en"] .contact-card h3 {
  font-family: var(--font-sans);
}

.hero h1 {
  max-width: 100%;
  margin: 0;
  color: var(--ink-strong);
  font-size: var(--type-hero);
  font-weight: 600;
  letter-spacing: 0.015em;
  line-height: 1.35;
  text-wrap: balance;
}

html[lang="en"] .hero h1 {
  width: 100%;
  max-width: none;
  font-size: clamp(1.625rem, 2.8vw, 2.375rem);
  letter-spacing: -0.025em;
  line-height: 1.3;
  text-wrap: wrap;
}

.hero-text {
  max-width: 64rem;
  margin: 18px 0 0;
  color: #294158;
  font-size: 1.0625rem;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-self: end;
  width: 100%;
  gap: 12px;
  margin-top: 24px;
  justify-content: flex-end;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.button-primary {
  color: #fff;
  background: var(--brand);
  border-color: var(--brand);
  box-shadow: 0 10px 22px rgba(10, 59, 120, 0.2);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--brand-strong);
  border-color: var(--brand-strong);
}

.button-secondary {
  color: var(--brand);
  background: var(--paper);
  border-color: var(--line-strong);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  color: var(--brand-strong);
  border-color: var(--brand);
  background: var(--brand-soft);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: 100%;
  margin: 32px 0 0;
  padding: 0;
  border-top: 1px solid rgba(10, 59, 120, 0.2);
  background: rgba(255, 255, 255, 0.78);
  list-style: none;
  text-align: left;
}

.hero-facts li {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  padding: 20px 24px;
  color: #294158;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.65;
  text-align: center;
  border-left: 1px solid rgba(10, 59, 120, 0.16);
}

.hero-facts li:first-child {
  border-left: 0;
}

.hero-facts li::before {
  content: none;
}

.section-heading {
  display: grid;
  gap: 10px;
  max-width: 850px;
  margin-bottom: 34px;
}

.section-kicker {
  margin: 0;
  color: var(--brand);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.6;
}

.section-heading h2 {
  margin: 0;
  color: var(--ink-strong);
  font-size: var(--type-section);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.section-heading h2::after {
  content: none;
}

.section-heading p:not(.section-kicker) {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.86;
}

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.pillar-card,
.updates-card,
.team-card,
.team-group,
.gallery-preview,
.gallery-card,
.outcomes-panel,
.paper-item,
.project-card,
.contact-card,
.contact-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.pillar-card {
  position: relative;
  display: grid;
  align-content: start;
  gap: 12px;
  min-height: 0;
  padding: var(--card-padding);
  overflow: hidden;
  box-shadow: none;
  transition: border-color 240ms ease, box-shadow 240ms ease, transform 320ms var(--ease-out);
}

.pillar-card::before {
  content: none;
}

.pillar-card:nth-child(2n)::before {
  background: linear-gradient(90deg, var(--brand), var(--gold));
}

.pillar-index {
  color: var(--brand);
  font-size: 0.875rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

.pillar-card h3 {
  color: var(--ink-strong);
  font-size: var(--type-card);
  font-weight: 600;
  line-height: 1.55;
  white-space: normal;
  min-height: 3.1em;
}

html[lang="en"] .pillar-card h3 {
  font-size: var(--type-card);
  line-height: 1.4;
}

.pillar-card p,
.team-card p,
.gallery-preview-copy p,
.project-card-text,
.paper-authors,
.contact-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.76;
}

.updates-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  align-items: start;
}

.updates-card {
  display: grid;
  gap: 18px;
  padding: 26px;
  box-shadow: var(--shadow-md);
}

.updates-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.updates-card-header::after {
  content: none;
}

.updates-card-header h3 {
  color: var(--ink-strong);
  font-size: 1.64rem;
  font-weight: 700;
  line-height: 1.22;
}

.updates-list {
  display: grid;
  gap: 0;
}

.update-item {
  display: grid;
  gap: 8px;
  padding: 17px 0;
  border-top: 1px solid var(--line);
}

.update-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.update-item.is-pinned {
  position: relative;
}

.update-item-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px 10px;
}

.update-item-pin {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 8px;
  border: 1px solid #c9a557;
  border-radius: 999px;
  color: #68480e;
  background: #fff8e8;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
}

.update-item-meta {
  width: fit-content;
  color: var(--brand);
  font-size: 0.85rem;
  font-weight: 600;
}

.update-item-title {
  margin: 0;
  color: var(--ink-strong);
  font-size: 1.03rem;
  font-weight: 600;
  line-height: 1.5;
}

.update-item-text {
  display: -webkit-box;
  min-height: 3.45em;
  margin: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: var(--type-body);
  line-height: 1.72;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.update-item.is-expanded .update-item-text {
  display: block;
  min-height: 0;
}

.update-item-detail {
  display: grid;
  gap: 18px;
  margin-top: 4px;
  padding: 18px 20px;
  border-left: 3px solid #84a9c4;
  border-radius: 0 10px 10px 0;
  background: #f4f8fb;
}

.update-detail-section {
  display: grid;
  gap: 7px;
}

.update-detail-section + .update-detail-section {
  padding-top: 16px;
  border-top: 1px solid #dce7ef;
}

.update-detail-section h5 {
  margin: 0;
  color: var(--ink-strong);
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1.55;
}

.update-detail-section p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.82;
}

.update-detail-section p + p {
  margin-top: 4px;
}

.update-item-toggle {
  justify-self: start;
  padding: 0;
  border: 0;
  color: var(--brand);
  background: transparent;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
}

.update-item-toggle:hover,
.update-item-toggle:focus-visible {
  text-decoration: underline;
}

.updates-more,
.gallery-more,
.outcomes-panel-more,
.team-group-toggle {
  justify-self: start;
}

.team-grid {
  display: grid;
  gap: 20px;
}

.team-card {
  padding: 26px;
  box-shadow: var(--shadow-md);
}

.team-lead-layout {
  display: grid;
  grid-template-columns: 176px minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

.team-lead-side {
  display: grid;
  justify-items: start;
}

.team-avatar-protected {
  width: 164px;
  height: 164px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper-soft);
}

.team-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-lead-content {
  display: grid;
  gap: 9px;
  min-width: 0;
}

.team-role {
  margin: 0;
  color: var(--brand);
  font-size: 0.9rem;
  font-weight: 600;
}

.team-card-featured h3 {
  color: var(--ink-strong);
  font-size: 1.82rem;
  line-height: 1.25;
}

.team-lead-name-link,
.team-member-name-link {
  border-bottom: 1px solid transparent;
}

.team-lead-name-link:hover,
.team-lead-name-link:focus-visible,
.team-member-name-link:hover,
.team-member-name-link:focus-visible {
  color: var(--brand);
  border-color: var(--brand);
}

.team-lead-text {
  max-width: 900px;
  text-align: left;
}

html[lang="en"] .team-lead-text {
  text-align: left;
  text-justify: auto;
}

.team-directory {
  display: grid;
  gap: 18px;
  margin-top: 22px;
}

.team-group {
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.team-group-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.team-group-header h3 {
  color: var(--ink-strong);
  font-size: 1.36rem;
  line-height: 1.25;
}

.team-group-meta {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--brand);
  background: var(--brand-soft);
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
}

.team-member-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(226px, 1fr));
  gap: 12px;
}

.team-member-card {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 13px;
  align-items: center;
  min-height: 104px;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fff, #fbfdff);
}

.team-member-avatar,
.team-member-avatar-protected {
  width: 74px;
  height: 74px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--brand);
}

.team-member-avatar {
  display: grid;
  place-items: center;
  color: #fff;
  font-family: var(--font-sans);
  font-size: 1.12rem;
  font-weight: 700;
}

.team-member-avatar-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-member-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.team-member-card h4 {
  margin: 0;
  color: var(--ink-strong);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
}

.team-member-subline,
.team-member-focus {
  margin: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: var(--type-label);
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.team-member-focus {
  display: -webkit-box;
  white-space: normal;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.team-group-toggle {
  margin-top: 16px;
}

.gallery-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chip {
  min-height: 38px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted-strong);
  background: var(--paper);
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease;
}

.filter-chip:hover,
.filter-chip:focus-visible,
.filter-chip.is-active {
  color: #fff;
  border-color: var(--brand);
  background: var(--brand);
}

.gallery-toolbar-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.gallery-shell,
.gallery-panel,
.outcomes-stack {
  display: grid;
  gap: 20px;
}

.gallery-preview {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.gallery-preview-media {
  height: 310px;
  min-height: 0;
  background: var(--paper-soft);
}

.gallery-preview-media .protected-media,
.gallery-preview-media img {
  width: 100%;
  height: 100%;
}

.gallery-preview-media img {
  object-fit: cover;
}

.gallery-preview-copy {
  display: grid;
  align-content: center;
  gap: 10px;
  padding: 24px 28px;
  border-left: 1px solid var(--line);
}

.meta-pill {
  width: fit-content;
  margin: 0;
  padding: 5px 11px;
  border-radius: 999px;
  color: var(--brand);
  background: var(--brand-soft);
  font-size: var(--type-label);
  font-weight: 600;
}

.gallery-preview-copy h3 {
  color: var(--ink-strong);
  font-size: 1.58rem;
  line-height: 1.25;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

@media (min-width: 821px) {
  .gallery-grid > .gallery-card:last-child:nth-child(3n + 1) {
    grid-column: 2;
  }
}

.gallery-card {
  overflow: hidden;
  padding: 0;
  cursor: pointer;
  text-align: left;
  box-shadow: var(--shadow-sm);
  transition: border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.gallery-card:hover,
.gallery-card:focus-visible,
.gallery-card.is-active {
  transform: translateY(-2px);
  border-color: var(--brand);
  box-shadow: var(--shadow-md);
}

.gallery-card-media {
  position: relative;
  display: block;
  aspect-ratio: 5 / 4;
  overflow: hidden;
  background: var(--paper-soft);
}

.gallery-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-card-copy {
  display: grid;
  gap: 4px;
  padding: 13px 14px 15px;
}

.gallery-card-copy strong {
  color: var(--ink-strong);
  font-size: 0.98rem;
  line-height: 1.35;
}

.gallery-card-copy span {
  color: var(--muted);
  font-size: 0.88rem;
}

.protected-media {
  position: relative;
  overflow: hidden;
  user-select: none;
  -webkit-touch-callout: none;
}

.protected-media img {
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.media-watermark {
  position: absolute;
  right: 10px;
  bottom: 9px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 4px 7px 3px;
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.94);
  background: rgba(4, 25, 50, 0.42);
  box-shadow: 0 2px 8px rgba(4, 18, 34, 0.16);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  font-size: 0.68rem;
  font-weight: 650;
  line-height: 1;
  letter-spacing: 0.06em;
  pointer-events: none;
  white-space: nowrap;
}

.gallery-preview-media .media-watermark {
  right: 14px;
  bottom: 12px;
  min-height: 24px;
  padding-inline: 8px;
  font-size: 0.72rem;
}

.outcomes-panel {
  display: grid;
  gap: 18px;
  padding: 26px;
  box-shadow: var(--shadow-md);
}

.outcomes-panel-header h3 {
  color: var(--ink-strong);
  font-size: 1.58rem;
  line-height: 1.25;
}

.papers-list {
  display: grid;
  gap: 12px;
}

.paper-item {
  display: grid;
  gap: 5px;
  padding: 17px 18px;
  background: linear-gradient(180deg, #fff, #fbfdff);
}

.paper-title {
  margin: 0;
  color: var(--ink-strong);
  font-size: 1.04rem;
  font-weight: 600;
  line-height: 1.55;
}

.paper-venue,
.paper-authors {
  margin: 0;
  font-size: 0.92rem;
}

.paper-venue {
  color: var(--brand);
  font-weight: 600;
}

.projects-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 0 14px 38px rgba(7, 20, 38, 0.055);
}

.projects-table-head,
.project-card {
  display: grid;
  grid-template-columns: 56px 92px minmax(260px, 0.95fr) minmax(300px, 1.15fr);
  gap: 22px;
}

.projects-table-head {
  align-items: center;
  padding: 13px 24px;
  border-bottom: 1px solid var(--line);
  color: #597086;
  background: #f3f7fa;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.5;
  text-transform: uppercase;
}

.projects-grid {
  display: grid;
}

.project-card {
  align-items: start;
  min-height: 0;
  padding: 24px;
  border: 0;
  border-radius: 0;
  background: var(--paper);
  box-shadow: none;
  transition: background-color 180ms ease;
}

.project-card + .project-card {
  border-top: 1px solid var(--line);
}

.project-card-featured {
  background: linear-gradient(90deg, rgba(185, 139, 51, 0.075), #fff 28%);
}

.project-card::before {
  content: none;
}

.project-card-index {
  padding-top: 3px;
  color: var(--brand);
  font-size: 0.84rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  line-height: 1.6;
}

.project-card-level {
  justify-self: start;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--brand);
  background: var(--brand-soft);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.4;
}

.project-card-title {
  margin: 0;
  color: var(--ink-strong);
  font-size: 1.0625rem;
  font-weight: 650;
  line-height: 1.65;
  text-wrap: pretty;
}

.project-card-program {
  min-width: 0;
}

.project-card-period {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.015em;
  line-height: 1.55;
  white-space: nowrap;
}

.project-card-text {
  margin: 0;
  font-size: var(--type-body);
  line-height: 1.8;
}

.contact-section {
  padding-bottom: 74px;
}

.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 22px 26px;
  padding: 30px;
  box-shadow: var(--shadow-md);
}

.contact-card-copy {
  display: grid;
  grid-column: 1;
  grid-row: 1;
  gap: 9px;
  align-content: start;
  max-width: none;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.contact-card-copy p {
  max-width: 48rem;
}

.contact-card h3 {
  color: var(--ink-strong);
  font-size: 1.72rem;
  line-height: 1.25;
}

.contact-directory {
  display: grid;
  grid-column: 1;
  grid-row: 2;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  align-content: start;
}

.contact-item {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 68px;
  padding: 14px 16px 14px 18px;
  color: var(--ink);
  line-height: 1.5;
  overflow-wrap: anywhere;
  background: linear-gradient(180deg, #ffffff, #fbfdff);
  box-shadow: 0 8px 18px rgba(7, 20, 38, 0.035);
}

.contact-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  border-radius: 999px;
  background: var(--brand);
  opacity: 0.68;
}

a.contact-item:hover,
a.contact-item:focus-visible {
  color: var(--brand);
  border-color: var(--brand);
  background: var(--brand-soft);
}

.contact-item-primary {
  grid-column: 1 / -1;
  min-height: 74px;
  color: var(--brand);
  font-weight: 600;
}

.contact-wechat {
  display: grid;
  grid-column: 2;
  grid-row: 1 / span 2;
  gap: 14px;
  align-content: center;
  justify-items: center;
  min-height: 100%;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(232, 240, 248, 0.78), rgba(255, 255, 255, 0.94)),
    #ffffff;
  box-shadow: 0 8px 18px rgba(7, 20, 38, 0.035);
}

.contact-wechat img {
  width: 166px;
  height: 166px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  object-fit: contain;
}

.contact-wechat-copy {
  display: grid;
  gap: 3px;
  text-align: center;
}

.contact-wechat-copy strong {
  color: var(--ink-strong);
  font-size: 1rem;
  line-height: 1.35;
}

.contact-wechat-copy span {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.footer {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 18px 40px;
  padding: 26px max(24px, calc((100vw - var(--content)) / 2)) 34px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #fff;
  font-size: 0.84rem;
  line-height: 1.65;
}

.footer-identity,
.footer-legal {
  display: grid;
  gap: 2px;
}

.footer-identity strong {
  color: var(--ink-strong);
  font-size: 0.98rem;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.footer-legal {
  justify-self: end;
  justify-items: end;
  text-align: right;
}

@media (max-width: 720px) {
  .footer {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 14px;
    padding-inline: 17px;
  }

  .footer-identity {
    justify-items: center;
    text-align: center;
  }

  .footer-legal {
    justify-self: center;
    justify-items: center;
    text-align: center;
  }

}

.flagcounter-tracker {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  opacity: 0;
  pointer-events: none;
}

.print-guard {
  display: none;
}

@media (max-width: 1080px) {
  .topbar {
    align-items: flex-start;
  }

  .topbar-actions {
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
  }

  .nav {
    flex-wrap: wrap;
  }





  .hero-facts,
  .pillar-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-facts li:nth-child(3) {
    grid-column: 1 / -1;
    border-top: 1px solid rgba(10, 59, 120, 0.16);
    border-left: 0;
  }
}

@media (max-width: 820px) {
  :root { --gutter: 17px; --card-padding: 20px; }

  .section {
    width: min(100% - 34px, var(--content));
    padding: 62px 0;
  }

  .topbar {
    padding-inline: 17px;
  }

  .brand-mark {
    width: 44px;
    height: 44px;
    flex-basis: 44px;
  }

  .hero {
    min-height: 0;
    padding-top: 36px;
    padding-bottom: 0;
  }

  .hero::before {
    background: url("assets/images/hero-jlu-dingxin-clean.jpg") center center / cover no-repeat;
  }

  .hero::after {
    background: linear-gradient(180deg, rgba(244, 249, 252, 0.86) 0%, rgba(244, 249, 252, 0.9) 72%, rgba(244, 249, 252, 0.95) 100%);
  }




  .hero-text {
    font-size: 1rem;
    line-height: 1.82;
  }

  .hero-facts,
  .updates-grid,
  .gallery-preview,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .hero-facts li,
  .hero-facts li:nth-child(3) {
    grid-column: auto;
    border-left: 0;
    border-top: 1px solid rgba(10, 59, 120, 0.16);
  }

  .hero-facts li:first-child {
    border-top: 0;
  }

  .gallery-preview-copy {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .gallery-preview-media {
    height: auto;
    min-height: 0;
    aspect-ratio: 16 / 10;
  }

  .contact-wechat {
    grid-column: 1;
    grid-row: auto;
    justify-items: start;
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: center;
  }

  .contact-card-copy,
  .contact-directory {
    grid-column: 1;
    grid-row: auto;
  }

  .contact-wechat img {
    width: 132px;
    height: 132px;
  }

  .contact-wechat-copy {
    text-align: left;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gallery-grid > .gallery-card:last-child:nth-child(2n + 1) {
    grid-column: 1 / -1;
    width: calc((100% - 14px) / 2);
    justify-self: center;
  }

  .team-lead-layout {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 18px;
  }

  .team-avatar-protected {
    width: 132px;
    height: 132px;
  }

}

@media (max-width: 620px) {
  body {
    font-size: var(--type-body);
  }

  .topbar {
    position: static;
    flex-direction: column;
    gap: 14px;
  }

  .brand {
    min-width: 0;
  }

  .topbar-actions {
    width: 100%;
    align-items: flex-start;
  }

  .nav {
    width: 100%;
    justify-content: flex-start;
    gap: 6px;
  }

  .nav a {
    min-height: 34px;
    padding-inline: 8px;
    font-size: 0.91rem;
  }



  .hero-actions,
  .button {
    width: 100%;
  }

  .pillar-grid,
  .gallery-grid,
  .contact-directory {
    grid-template-columns: 1fr;
  }

  .gallery-grid > .gallery-card:last-child:nth-child(2n + 1) {
    grid-column: auto;
    width: 100%;
  }

  .contact-wechat {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .contact-wechat-copy {
    text-align: center;
  }

  .team-lead-layout,
  .team-member-card {
    grid-template-columns: 1fr;
  }

  .team-member-card {
    justify-items: start;
  }

  .team-group-header,
  .gallery-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .skip-link,
  .button,
  .language-button,
  .nav a,
  .gallery-card {
    transition: none;
  }
}

/* Shared type rhythm and restrained interaction treatment. */
body {
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

::selection {
  color: #fff;
  background: var(--brand);
}

:focus-visible {
  outline: 3px solid #5487bd;
  outline-offset: 4px;
}

.section:not(.hero) {
  padding-block: clamp(36px, 4vw, 56px);
}

.section-heading {
  gap: 8px 16px;
  margin-bottom: 24px;
  max-width: none;
}

.section-heading p:not(.section-kicker) {
  max-width: 46rem;
}

.updates-card-header h3,
.team-group-header h3,
.gallery-preview-copy h3,
.outcomes-panel-header h3,
.contact-card h3 {
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1.5;
}

.team-card-featured h3 {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.4;
}

.update-item-title,
.paper-title,
.project-card-title {
  font-size: 1.0625rem;
  line-height: 1.65;
}

.update-item-text,
.project-card-text,
.paper-authors {
  font-size: var(--type-body);
  line-height: 1.8;
}

.team-member-subline,
.team-member-focus {
  font-size: var(--type-label);
  line-height: 1.6;
}

.team-member-subline {
  white-space: normal;
  overflow-wrap: anywhere;
}

.paper-title,
.update-item-title,
.contact-item-value {
  overflow-wrap: anywhere;
}

.button {
  min-height: 46px;
  padding-block: 12px;
  font-size: var(--type-label);
  font-weight: 600;
}

.hero .button-primary {
  color: #fff;
  background: var(--brand);
  border-color: var(--brand);
  box-shadow: none;
}

.hero .button-primary:hover {
  background: var(--brand-strong);
  border-color: var(--brand-strong);
}

.hero .button-secondary {
  color: var(--brand);
  background: rgba(255, 255, 255, 0.85);
  border-color: #9eb5cb;
}

.hero .button-secondary:hover {
  background: #fff;
  border-color: var(--brand);
}

.hero-facts li:first-child {
  padding-left: 24px;
}

.topbar {
  transition: box-shadow 200ms ease;
}

.topbar.is-scrolled {
  box-shadow: 0 4px 20px rgba(7, 20, 38, 0.07);
}

.topbar::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--brand);
  transform: scaleX(var(--reading-progress, 0));
  transform-origin: left;
  pointer-events: none;
}

.nav a {
  position: relative;
  min-height: 44px;
  font-size: var(--type-label);
  font-weight: 500;
}

.nav a[aria-current="location"] {
  color: var(--brand);
  background: var(--brand-soft);
}

.language-button,
.filter-chip {
  min-height: 40px;
  font-size: var(--type-label);
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .pillar-card:hover {
    transform: translateY(-4px);
    border-color: #9eb5cb;
    box-shadow: 0 12px 24px rgba(7, 20, 38, 0.06);
  }

  .project-card:hover {
    background: #f8fbfd;
  }

  .gallery-card img {
    transition: transform 500ms var(--ease-out);
  }

  .gallery-card:hover img {
    transform: scale(1.035);
  }
}

@keyframes enter-content {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-copy > :not(.hero-facts) {
    animation: enter-content 750ms var(--ease-out) both;
  }

  .hero h1 { animation-delay: 70ms; }
  .hero-text { animation-delay: 140ms; }
  .hero-actions { animation-delay: 210ms; }

  .is-entering {
    animation: enter-content 650ms var(--ease-out) both;
  }
}

@media (max-width: 1080px) {
  section[id] { scroll-margin-top: 140px; }
}

@media (max-width: 820px) {
  .hero {
    padding: 36px 0 0;
    width: 100%;
  }

  .hero-facts { margin-top: 24px; }
  .hero-facts li { padding: 16px 0; }
  .hero-text { font-size: var(--type-body); }
  .pillar-card { padding: 24px; }

  .projects-table-head {
    display: none;
  }

  .project-card {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 10px 14px;
    padding: 21px;
  }

  .project-card-index {
    grid-column: 1;
  }

  .project-card-level {
    grid-column: 2;
  }

  .project-card-program,
  .project-card-text {
    grid-column: 1 / -1;
  }
}

@media (max-width: 620px) {
  .topbar {
    position: sticky;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    padding-block: 12px 8px;
  }

  .brand { order: 1; }
  .brand-mark { width: 38px; height: 38px; flex-basis: 38px; }
  .brand-copy strong { font-size: 1rem; }
  .topbar-actions { display: contents; }

  .language-switch {
    position: static;
    order: 2;
  }

  .language-button { min-width: 44px; padding-inline: 8px; }

  .nav {
    order: 3;
    flex-basis: 100%;
    flex-wrap: wrap;
    gap: 2px;
  }

  .nav a { padding-inline: 8px; font-size: var(--type-label); }
  .hero { padding-inline: 0; margin-top: 0; }
  .eyebrow { font-size: 0.8125rem; letter-spacing: 0; }
  .hero h1 { letter-spacing: 0; }
  .hero-actions { width: 100%; }
  .hero-actions .button { width: auto; flex: 1 1 140px; }
  .team-member-grid { grid-template-columns: 1fr; }
  .team-member-card { grid-template-columns: 64px minmax(0, 1fr); }
  .team-member-avatar,
  .team-member-avatar-protected { width: 64px; height: 64px; }
  .updates-card, .team-card, .team-group, .outcomes-panel, .contact-card { padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

section[id] {
  scroll-margin-top: var(--header-offset, 140px);
}

.pillar-grid { gap: 16px; }
.updates-grid { gap: 16px; align-items: stretch; }
.updates-card { grid-template-rows: auto 1fr auto; }
.updates-list { align-content: start; }
.pillar-card, .updates-card, .team-card, .team-group, .outcomes-panel, .contact-card {
  padding: var(--card-padding);
}

@supports (grid-template-rows: subgrid) {
  .pillar-card {
    grid-row: span 3;
    grid-template-rows: subgrid;
    row-gap: 12px;
  }
  .pillar-card h3 { min-height: 0; }
}

@media (max-width: 620px) {
  .pillar-card h3 { min-height: 0; }
}

@media print {
  body {
    min-width: 0;
    margin: 0;
    color: #102033;
    background: #fff;
  }

  body * {
    display: none !important;
  }

  body::before {
    display: block;
    max-width: 40rem;
    margin: 20mm auto;
    padding: 16mm;
    border: 1px solid #bfccd9;
    color: #102033;
    background: #fff;
    font: 600 16pt/1.6 var(--font-sans);
    text-align: center;
    content: "出于资料保护，本页面不提供打印版本。";
  }

  html[lang="en"] body::before {
    content: "Printing is disabled to protect site materials.";
  }
}

/* Academic record: restrained chronology, clear venue hierarchy, and aligned metadata. */
.outcomes-panel {
  gap: 26px;
}

.outcomes-panel-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.outcomes-panel-kicker {
  margin: 0 0 6px;
  color: var(--brand);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.publication-note {
  margin: -6px 0 0;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

.publication-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.publication-links a,
.update-item-source {
  color: var(--brand);
  font-size: var(--type-label);
  font-weight: 600;
  text-decoration: none;
}

.publication-links a {
  padding: 8px 11px;
  border: 1px solid #b6c9da;
  border-radius: 999px;
  background: #f7fbfe;
}

.publication-links a:hover,
.publication-links a:focus-visible,
.update-item-source:hover,
.update-item-source:focus-visible {
  color: var(--brand-strong);
  border-color: var(--brand);
  text-decoration: underline;
}

.papers-list {
  gap: 0;
}

.paper-year-group {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 22px;
  padding-block: 4px 24px;
}

.paper-year-group + .paper-year-group {
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.paper-year {
  position: sticky;
  top: var(--header-offset, 140px);
  align-self: start;
  margin: 0;
  color: var(--brand);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
}

.paper-year-list {
  display: grid;
  gap: 0;
}

.paper-item {
  display: grid;
  grid-template-columns: minmax(150px, 0.28fr) minmax(0, 1fr);
  gap: 24px;
  padding: 20px 0;
  border: 0;
  border-top: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
}

.paper-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.paper-meta,
.paper-copy {
  display: grid;
  align-content: start;
  gap: 8px;
}

.paper-venue {
  margin: 0;
  color: var(--brand);
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.55;
}

.paper-topic {
  width: fit-content;
  padding: 4px 8px;
  border-radius: 999px;
  color: #38526a;
  background: #edf4f8;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
}

.paper-title {
  margin: 0;
  color: var(--ink-strong);
  font-size: 1.0625rem;
  font-weight: 650;
  line-height: 1.55;
}

.paper-title a,
.update-item-title a {
  color: inherit;
  text-decoration: none;
}

.paper-title a:hover,
.paper-title a:focus-visible,
.update-item-title a:hover,
.update-item-title a:focus-visible {
  color: var(--brand);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.paper-authors {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.update-item-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
}

@media (max-width: 820px) {
  .outcomes-panel-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .publication-links {
    justify-content: flex-start;
  }

  .paper-year-group {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 16px;
  }

  .paper-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .paper-meta {
    gap: 6px;
  }
}

@media (max-width: 620px) {
  .paper-year-group {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .paper-year {
    position: static;
  }

  .publication-links a {
    width: 100%;
    text-align: center;
  }
}

/* Quiet ambient layer: slow translucent light fields with a technical grid. */
body {
  position: relative;
  background: #f6f9fc;
}

.ambient-background {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: linear-gradient(180deg, #f9fbfd 0%, #f3f7fa 52%, #f7f9fb 100%);
}

.ambient-background::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(10, 59, 120, 0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 59, 120, 0.026) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 15%, #000 86%, transparent 100%);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 15%, #000 86%, transparent 100%);
}

.ambient-glow {
  position: absolute;
  width: clamp(440px, 48vw, 760px);
  aspect-ratio: 1;
  border-radius: 50%;
  opacity: 0.62;
  will-change: transform;
}

.ambient-glow-blue {
  top: 4%;
  left: -18%;
  background: radial-gradient(circle, rgba(87, 151, 214, 0.18) 0%, rgba(87, 151, 214, 0.07) 42%, transparent 72%);
  animation: ambient-drift-blue 28s ease-in-out infinite alternate;
}

.ambient-glow-teal {
  top: 42%;
  right: -20%;
  background: radial-gradient(circle, rgba(70, 142, 132, 0.15) 0%, rgba(70, 142, 132, 0.055) 44%, transparent 72%);
  animation: ambient-drift-teal 34s ease-in-out -8s infinite alternate;
}

.ambient-glow-gold {
  bottom: -18%;
  left: 28%;
  background: radial-gradient(circle, rgba(185, 139, 51, 0.12) 0%, rgba(185, 139, 51, 0.04) 40%, transparent 70%);
  animation: ambient-drift-gold 38s ease-in-out -14s infinite alternate;
}

.site-shell {
  position: relative;
  z-index: 1;
}

.section-tinted {
  background: linear-gradient(180deg, rgba(238, 244, 248, 0.86), rgba(246, 249, 251, 0.8));
  box-shadow: 0 0 0 100vmax rgba(242, 246, 249, 0.82);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

@keyframes ambient-drift-blue {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(8vw, 5vh, 0) scale(1.08); }
}

@keyframes ambient-drift-teal {
  from { transform: translate3d(0, 0, 0) scale(1.04); }
  to { transform: translate3d(-7vw, 7vh, 0) scale(0.96); }
}

@keyframes ambient-drift-gold {
  from { transform: translate3d(-3vw, 0, 0) scale(0.96); }
  to { transform: translate3d(5vw, -6vh, 0) scale(1.06); }
}

@media (prefers-reduced-motion: reduce) {
  .ambient-glow {
    animation: none;
    will-change: auto;
  }
}