:root {
  color-scheme: light;
  --bg: #fefdfe;
  --surface: #ffffff;
  --surface-alt: #fefdfe;
  --ink: #111111;
  --ink-soft: #49413b;
  --muted: #746b65;
  --header: #1a191e;
  --header-deep: #1a191e;
  --line: #ddd5cb;
  --line-strong: #b8ada2;
  --accent: #dd3e14;
  --accent-soft: #f8e3dc;
  --accent-warm: #dd3e14;
  --shadow-soft: 0 18px 42px rgba(0, 0, 0, 0.08);
  --radius-xs: 3px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --header-height: 88px;
  --container: min(1180px, calc(100% - 36px));
  --font-sans: "Segoe UI Variable Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-sans);
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(221, 62, 20, 0.08), transparent 26%),
    radial-gradient(circle at left 20%, rgba(0, 0, 0, 0.045), transparent 34%),
    linear-gradient(180deg, #fefdfe 0%, var(--bg) 100%);
  line-height: 1.72;
}

a {
  color: inherit;
}

button {
  font: inherit;
}

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

.container {
  width: var(--container);
  margin: 0 auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  left: 14px;
  top: -48px;
  z-index: 200;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink);
  text-decoration: none;
  border-radius: var(--radius-xs);
  box-shadow: var(--shadow-soft);
}

.skip-link:focus {
  top: 14px;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 120;
  min-height: var(--header-height);
  background: #1a191e;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background-color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(26, 25, 30, 0.98);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.24);
}

.header-inner {
  width: min(1680px, calc(100% - 56px));
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
  max-width: min(620px, 42vw);
  text-decoration: none;
  color: #fff;
}

.brand-mark {
  display: block;
  flex: 0 0 auto;
  width: 248px;
}

.brand-mark-panel {
  display: block;
  width: 100%;
  height: 58px;
  overflow: hidden;
  padding: 0;
  background: #1a191e;
  border: 0;
  box-shadow: none;
  transition: transform 180ms ease;
}

.brand:hover .brand-mark-panel,
.brand:focus-visible .brand-mark-panel {
  transform: translateY(-1px);
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  margin: 0;
  border-radius: 0;
  object-fit: cover;
  object-position: center 48%;
}

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

.brand-name {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  line-height: 1.1;
}

.brand-subtitle {
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.25;
}

.site-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 0;
  padding: 0;
}

.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 10px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-xs);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: #fff;
}

main {
  padding-top: var(--header-height);
}

.page-band {
  position: relative;
  overflow: hidden;
  background: #080808;
}

.page-band-shell,
.page-band-home {
  position: relative;
  isolation: isolate;
  min-height: 320px;
}

.page-band-home {
  min-height: 540px;
  display: grid;
  align-items: stretch;
}

.page-band-media {
  position: absolute;
  inset: 0;
}

.page-band-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 18%, rgba(221, 62, 20, 0.22), transparent 18%),
    linear-gradient(90deg, rgba(0, 0, 0, 0.28) 0%, rgba(0, 0, 0, 0.08) 48%, transparent 100%);
  pointer-events: none;
}

.page-band-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-band-overlay {
  position: relative;
  min-height: inherit;
  display: flex;
  align-items: flex-end;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.88) 0%, rgba(0, 0, 0, 0.68) 38%, rgba(0, 0, 0, 0.18) 100%);
}

.page-band-copy {
  width: var(--container);
  margin: 0 auto;
  padding: 64px 0 46px;
  color: #fff;
}

.page-band-copy p:last-child {
  margin-bottom: 0;
}

.home-hero {
  position: relative;
  z-index: 1;
  width: var(--container);
  margin: 0 auto;
  min-height: 540px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: end;
  padding: 72px 0 54px;
}

.page-band-home .home-side-panel {
  display: none;
}

.home-hero-copy {
  max-width: 720px;
  color: #fff;
}

.home-hero-kicker,
.section-kicker,
.metric-label,
.small-caps {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 700;
}

.home-hero-kicker {
  color: rgba(255, 255, 255, 0.78);
}

.section-kicker,
.small-caps {
  color: var(--accent);
}

.home-hero-title,
.page-title,
.section-title {
  margin: 14px 0 0;
  letter-spacing: -0.04em;
  line-height: 1.02;
  font-weight: 800;
}

.home-hero-title {
  font-size: clamp(2.55rem, 5.9vw, 4.4rem);
  font-weight: 700;
  max-width: none;
  white-space: nowrap;
}

.home-hero-title-main {
  font-weight: 700;
}

.home-hero-title-lab {
  font-weight: 500;
}

.page-title {
  color: #fff;
  font-size: clamp(2.6rem, 6vw, 4.3rem);
  max-width: 11ch;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  color: var(--ink);
}

.title-rule {
  width: 96px;
  height: 4px;
  margin: 18px 0 0;
  background: var(--accent-warm);
}

.home-hero-lead,
.page-summary,
.section-lead,
.panel-copy,
.panel-copy p,
.body-copy {
  color: inherit;
}

.home-hero-lead,
.page-summary {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: 1.08rem;
  color: rgba(255, 255, 255, 0.92);
}

.home-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.home-scroll-indicator {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 6px 10px 8px;
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.65);
  animation: home-scroll-float 2.2s ease-in-out infinite;
}

.home-scroll-indicator:hover,
.home-scroll-indicator:focus-visible {
  color: #fff;
}

.home-scroll-indicator:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.92);
  outline-offset: 3px;
}

.home-scroll-indicator-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
}

.home-scroll-indicator-icon {
  width: 18px;
  height: 18px;
  border-right: 2px solid transparent;
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.46)) 1;
  transform: rotate(45deg);
  filter: drop-shadow(0 2px 10px rgba(255, 255, 255, 0.16));
  animation: home-scroll-bounce 1.2s ease-in-out infinite;
}

@keyframes home-scroll-float {
  0%,
  100% {
    transform: translate(-50%, 0);
  }

  50% {
    transform: translate(-50%, 8px);
  }
}

@keyframes home-scroll-bounce {
  0%,
  100% {
    opacity: 0.7;
    transform: rotate(45deg) translate(0, 0);
  }

  50% {
    opacity: 1;
    transform: rotate(45deg) translate(4px, 4px);
  }
}

.button-link,
.text-link,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 16px;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.button-link:hover,
.text-link:hover,
.ghost-button:hover {
  transform: translateY(-1px);
}

.button-link {
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  padding: 0 18px;
  letter-spacing: 0.03em;
}

.text-link {
  padding: 0;
  min-height: auto;
  color: var(--accent);
  justify-content: flex-start;
}

.button-link--light {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.14);
}

.button-link--ghost {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.26);
  color: #fff;
  backdrop-filter: blur(10px);
}

.button-link--light:hover,
.button-link--light:focus-visible,
.ghost-button:hover,
.ghost-button:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.button-link--ghost:hover,
.button-link--ghost:focus-visible {
  border-color: var(--accent);
  background: rgba(221, 62, 20, 0.14);
}

.callout .button-link--ghost {
  border-color: rgba(255, 255, 255, 0.24);
  color: #fff;
  background: rgba(255, 255, 255, 0.03);
}

.home-side-panel,
.panel,
.list-card,
.detail-card,
.member-card,
.research-card,
.publication-card,
.news-card,
.contact-card,
.timeline-item,
.workflow-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, #ffffff 0%, #fefdfe 100%);
  box-shadow: var(--shadow-soft);
}

.home-side-panel {
  position: relative;
  overflow: hidden;
  padding: 24px;
  margin-bottom: 2px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(254, 253, 254, 0.92) 100%);
  border-color: rgba(221, 62, 20, 0.18);
  backdrop-filter: blur(10px);
}

.home-side-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent) 0%, rgba(221, 62, 20, 0) 78%);
}

.home-side-panel .small-caps {
  color: var(--accent);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.metric {
  padding-top: 14px;
  border-top: 1px solid rgba(221, 62, 20, 0.18);
}

.metric-value {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--accent);
}

.metric-label {
  margin-top: 6px;
  color: var(--muted);
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}

.page-breadcrumb {
  min-height: 72px;
  display: flex;
  align-items: center;
}

.breadcrumb-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.breadcrumb-list li:not(:last-child)::after {
  content: "/";
  margin-left: 12px;
  color: #a0aab5;
}

.breadcrumb-list a {
  color: var(--accent);
  text-decoration: none;
}

.page-content {
  padding-bottom: 88px;
}

.section-block {
  padding: 18px 0 56px;
}

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

body[data-page="home"] .page-content > .section-block {
  margin-inline: -18px;
  padding: 22px 18px 46px;
}

body[data-page="home"] .page-content > .section-block:nth-of-type(odd) {
  background: #ffffff;
}

body[data-page="home"] .page-content > .section-block:nth-of-type(even) {
  background: #eeedee;
}

body[data-page="home"] .page-content > .section-block + .section-block {
  border-top: none;
}

.section-intro {
  display: grid;
  gap: 16px;
  max-width: 720px;
  margin-bottom: 28px;
}

.section-intro-heading,
.section-intro-meta {
  display: grid;
  gap: 12px;
}

.section-intro .section-kicker,
.section-intro .section-title,
.section-intro .section-lead,
.section-intro .title-rule {
  margin: 0;
}

.section-intro .title-rule {
  width: 88px;
  height: 3px;
}

.section-lead {
  color: var(--ink-soft);
  font-size: 1.04rem;
  line-height: 1.6;
}

.home-overview-grid,
.research-grid,
.news-grid,
.publication-grid,
.team-grid,
.contact-grid,
.two-column,
.three-column {
  display: grid;
  gap: 18px;
}

.home-overview-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

body[data-page="home"] .section-intro {
  max-width: none;
  grid-template-columns: minmax(0, 1.5fr) minmax(320px, 0.8fr);
  gap: 10px 18px;
  align-items: start;
  margin-bottom: 16px;
}

body[data-page="home"] .section-intro-heading {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  align-items: baseline;
  gap: 0 16px;
}

body[data-page="home"] .section-intro .section-kicker {
  padding-bottom: 0;
  font-size: clamp(1.7rem, 2.6vw, 2.45rem);
  letter-spacing: 0.1em;
  line-height: 1.04;
}

body[data-page="home"] .section-intro .section-title {
  max-width: none;
  font-size: clamp(1.7rem, 2.6vw, 2.45rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

body[data-page="home"] .section-intro-meta {
  max-width: 34rem;
  justify-self: start;
  align-self: center;
}

body[data-page="home"] .section-intro .title-rule {
  width: 72px;
}

body[data-page="home"] .section-intro .section-lead {
  font-size: 0.98rem;
}

.two-column {
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
}

.three-column {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.about-focus-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
  gap: 18px;
  align-items: stretch;
}

.panel,
.list-card,
.detail-card,
.publication-card,
.news-card,
.workflow-card,
.member-card,
.contact-card {
  padding: 22px;
}

.link-panel {
  position: relative;
  display: grid;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.link-panel:hover .link-panel-arrow {
  transform: translateX(4px);
}

.link-panel-arrow {
  display: inline-block;
  color: var(--accent);
  transition: transform 160ms ease;
}

.panel-title,
.card-title {
  margin: 0;
  font-size: 1.22rem;
  line-height: 1.35;
}

.panel-copy,
.panel-copy p,
.card-copy,
.detail-list,
.tag-list,
.member-role,
.member-focus,
.news-date,
.publication-meta,
.workflow-copy,
.small-note {
  color: var(--ink-soft);
}

.card-copy,
.panel-copy {
  margin: 0;
}

.panel-copy p,
.body-copy p {
  margin: 0 0 14px;
}

.media-block {
  border: 1px solid var(--line);
  background: var(--surface);
}

.placeholder {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xs);
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, #fefdfe 0%, #fefdfe 100%);
}

.placeholder svg {
  width: 100%;
  height: 100%;
}

.placeholder--banner {
  min-height: 100%;
}

.placeholder--figure {
  min-height: 360px;
}

.placeholder--portrait {
  min-height: 240px;
}

.placeholder--map {
  min-height: 340px;
}

.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, #fefdfe 0%, #fefdfe 100%);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--portrait {
  aspect-ratio: 4 / 5;
}

.media-frame--figure {
  aspect-ratio: 16 / 10;
}

.media-frame--map {
  aspect-ratio: 4 / 3;
}

.media-frame--banner {
  min-height: 100%;
}

.pi-card {
  display: grid;
  gap: 18px;
}

.home-about-block {
  display: grid;
}

.about-focus-copy {
  display: grid;
  align-content: start;
}

.about-focus-tags {
  margin-top: 8px;
}

.about-visual {
  display: flex;
}

.about-visual .media-frame,
.about-visual .placeholder {
  width: 100%;
  height: 100%;
}

.pi-meta strong {
  display: block;
  font-size: 1.1rem;
}

.pi-meta span,
.member-role,
.publication-meta,
.news-date {
  display: inline-block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.92rem;
}

.pi-spotlight {
  display: grid;
  grid-template-columns: minmax(168px, 220px) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.pi-spotlight-media {
  max-width: 220px;
}

.pi-spotlight-media .media-frame,
.pi-spotlight-media .placeholder {
  width: 100%;
}

.pi-spotlight-copy {
  display: grid;
  gap: 10px;
}

.pi-spotlight-role {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.pi-spotlight-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding-top: 6px;
}

.pi-spotlight-meta p {
  margin: 0;
  color: var(--ink-soft);
}

.pi-spotlight-meta strong {
  color: var(--ink);
}

.detail-list,
.tag-list,
.position-list,
.social-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.detail-list li,
.position-list li {
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.detail-list li:first-child,
.position-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.research-grid {
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.research-card {
  position: relative;
  min-height: 0;
  padding: 24px 26px 22px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 18px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.96);
  border-color: rgba(184, 173, 162, 0.56);
  box-shadow: 0 14px 30px rgba(17, 17, 17, 0.05);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.research-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, rgba(221, 62, 20, 0.72) 0%, rgba(221, 62, 20, 0) 72%);
  opacity: 0.5;
}

.research-card:hover,
.research-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(221, 62, 20, 0.22);
  box-shadow: 0 18px 34px rgba(17, 17, 17, 0.08);
}

.research-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.research-card-meta {
  min-width: 0;
  flex: 1 1 auto;
}

.research-card-body {
  display: grid;
  align-content: start;
  gap: 14px;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(184, 173, 162, 0.5);
  background: rgba(254, 253, 254, 0.92);
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1;
  white-space: nowrap;
}

.meta-pill--muted {
  letter-spacing: 0.16em;
}

.meta-pill--accent {
  border-color: rgba(221, 62, 20, 0.14);
  background: #fff8f5;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.research-card-index {
  min-width: 46px;
}

.research-card .card-title {
  font-size: clamp(1.34rem, 1.15vw, 1.58rem);
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.research-card .card-copy {
  font-size: 0.98rem;
  line-height: 1.84;
  color: #564e47;
}

.research-card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.research-card-toggle {
  min-height: 38px;
  padding: 0 16px;
  white-space: nowrap;
}

.research-card.is-expanded {
  border-color: rgba(221, 62, 20, 0.26);
  box-shadow: 0 22px 38px rgba(17, 17, 17, 0.09);
}

.research-card-detail {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(240px, 0.95fr);
  gap: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(184, 173, 162, 0.42);
}

.research-card-detail[hidden] {
  display: none;
}

.research-card-detail-copy {
  display: grid;
  align-content: start;
  gap: 12px;
}

.research-card-detail-copy .card-copy {
  margin: 0;
}

.research-card-visual {
  min-width: 0;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.research-tag-list {
  margin: 0;
  gap: 8px;
}

.tag-list li,
.social-list a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: var(--surface-alt);
  border-radius: var(--radius-xs);
  font-size: 0.84rem;
}

.workflow-board {
  display: grid;
  gap: 20px;
}

.workflow-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.workflow-card {
  position: relative;
  min-height: 214px;
}

.workflow-step {
  display: inline-block;
  min-width: 44px;
  padding: 4px 8px;
  background: var(--accent);
  color: #fff;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 999px;
}

.workflow-card h3 {
  margin: 16px 0 0;
  font-size: 1.04rem;
  line-height: 1.4;
}

.workflow-card::after {
  content: "";
  position: absolute;
  top: 30px;
  right: -15px;
  width: 16px;
  height: 16px;
  border-top: 2px solid rgba(221, 62, 20, 0.55);
  border-right: 2px solid rgba(221, 62, 20, 0.55);
  transform: rotate(45deg);
}

.workflow-card:last-child::after {
  display: none;
}

.publication-grid {
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.publication-card {
  position: relative;
  min-height: 0;
  padding: 24px 26px 22px;
  display: grid;
  gap: 18px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.96);
  border-color: rgba(184, 173, 162, 0.56);
  box-shadow: 0 14px 30px rgba(17, 17, 17, 0.05);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.publication-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, rgba(221, 62, 20, 0.72) 0%, rgba(221, 62, 20, 0) 72%);
  opacity: 0.5;
}

.publication-card:hover,
.publication-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(221, 62, 20, 0.22);
  box-shadow: 0 18px 34px rgba(17, 17, 17, 0.08);
}

.publication-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.publication-card-index {
  min-width: 46px;
}

.publication-card-body {
  display: grid;
  align-content: start;
  gap: 12px;
}

.publication-card .card-title {
  font-size: clamp(1.42rem, 1.2vw, 1.68rem);
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.publication-card .publication-meta {
  display: block;
  margin-top: 0;
  color: #7b5f55;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.publication-card .card-copy {
  font-size: 1rem;
  line-height: 1.84;
  color: #564e47;
}

.publication-card .ghost-button {
  justify-self: start;
}

.news-grid {
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.team-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.news-card {
  position: relative;
  min-height: 0;
  padding: 24px 26px 22px;
  display: grid;
  gap: 18px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.96);
  border-color: rgba(184, 173, 162, 0.56);
  box-shadow: 0 14px 30px rgba(17, 17, 17, 0.05);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.news-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, rgba(221, 62, 20, 0.72) 0%, rgba(221, 62, 20, 0) 72%);
  opacity: 0.5;
}

.news-card:hover,
.news-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(221, 62, 20, 0.22);
  box-shadow: 0 18px 34px rgba(17, 17, 17, 0.08);
}

.news-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.news-card-index {
  min-width: 46px;
}

.news-card-body {
  display: grid;
  align-content: start;
  gap: 14px;
}

.news-card .card-title {
  font-size: clamp(1.42rem, 1.2vw, 1.68rem);
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.news-card .card-copy {
  font-size: 1rem;
  line-height: 1.84;
  color: #564e47;
}

.member-card {
  display: grid;
  gap: 16px;
  align-content: start;
}

.member-focus {
  margin: 0;
}

.member-card-button {
  width: 100%;
  appearance: none;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.member-card-button:hover,
.member-card-button:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(221, 62, 20, 0.24);
  box-shadow: 0 18px 34px rgba(17, 17, 17, 0.08);
}

.member-card-media {
  max-width: 148px;
}

.member-card-body {
  display: grid;
  gap: 10px;
  align-content: start;
}

.member-card-action {
  display: inline-flex;
  align-items: center;
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.member-detail-dialog {
  position: fixed;
  inset: 0;
  z-index: 260;
  display: grid;
  place-items: center;
  padding: 28px;
  background: rgba(12, 12, 12, 0.5);
}

.member-detail-dialog[hidden] {
  display: none;
}

body.has-dialog {
  overflow: hidden;
}

.member-detail-sheet {
  position: relative;
  width: min(100%, 920px);
  padding: 32px;
  border: 1px solid rgba(184, 173, 162, 0.56);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(254, 253, 254, 0.94) 100%);
  box-shadow: 0 30px 72px rgba(17, 17, 17, 0.2);
}

.member-detail-layout {
  display: grid;
  grid-template-columns: minmax(180px, 220px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.member-detail-media {
  max-width: 220px;
}

.member-detail-copy {
  display: grid;
  gap: 12px;
}

.member-detail-role,
.member-detail-focus {
  margin: 0;
  color: var(--ink-soft);
}

.member-detail-bio p {
  margin: 0;
  color: #564e47;
  line-height: 1.84;
}

.member-contact-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 4px 0 0;
  padding: 0;
}

.member-contact-item {
  display: grid;
  gap: 6px;
  padding: 12px 14px;
  border: 1px solid rgba(184, 173, 162, 0.5);
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, 0.92);
}

.member-contact-item strong {
  color: var(--ink);
}

.member-contact-item span {
  color: var(--ink-soft);
}

.member-detail-close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 1.1rem;
  cursor: pointer;
}

.member-detail-close:hover,
.member-detail-close:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

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

.callout {
  position: relative;
  overflow: hidden;
  padding: 30px;
  border: 1px solid rgba(221, 62, 20, 0.3);
  background: linear-gradient(135deg, #0c0c0c 0%, #181818 100%);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.18);
}

.callout::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 110px;
  height: 110px;
  background: linear-gradient(135deg, rgba(221, 62, 20, 0.28), rgba(221, 62, 20, 0));
  pointer-events: none;
}

.callout h3 {
  margin: 0;
  font-size: 1.38rem;
  color: #fff;
}

.callout p {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.social-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.social-list a {
  text-decoration: none;
  color: var(--ink-soft);
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: #070707;
}

.footer-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  padding: 26px 0 34px;
}

.footer-copy strong {
  display: block;
  margin-bottom: 6px;
  color: #fff;
}

.footer-copy span {
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.9rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: #fff;
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--accent);
}

.ghost-button {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  cursor: pointer;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.noscript-banner {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 220;
  max-width: 420px;
  padding: 12px 14px;
  border: 1px solid rgba(221, 62, 20, 0.28);
  background: #fff6f3;
  color: #8f2a0f;
  box-shadow: var(--shadow-soft);
}

@media (max-width: 1120px) {
  .home-overview-grid,
  .news-grid,
  .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .workflow-card:last-child::after,
  .workflow-card::after {
    display: none;
  }
}

@media (max-width: 960px) {
  .header-inner {
    width: calc(100% - 28px);
    gap: 12px;
  }

  .brand {
    gap: 12px;
    max-width: calc(100% - 68px);
  }

  .brand-mark-panel {
    height: 50px;
  }

  .brand-mark {
    width: 210px;
  }

  .brand-subtitle {
    display: none;
  }

  .menu-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    padding: 12px 18px 16px;
    background: var(--header-deep);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 160ms ease, transform 160ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .home-hero,
  .two-column,
  .about-focus-layout,
  .research-card-detail,
  .member-detail-layout,
  .publication-grid,
  .position-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .pi-spotlight,
  .pi-spotlight-meta {
    grid-template-columns: 1fr;
  }

  .home-hero {
    padding-top: 64px;
  }

  .home-scroll-indicator {
    bottom: 12px;
  }

  body[data-page="home"] .section-intro {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  body[data-page="home"] .section-intro-meta {
    justify-self: start;
    max-width: 42rem;
  }
}

@media (max-width: 720px) {
  .brand {
    max-width: calc(100% - 64px);
  }

  .brand-copy {
    display: none;
  }

  .brand-mark {
    width: 176px;
  }

  .brand-mark-panel {
    height: 42px;
  }

  .research-card {
    min-height: 0;
    padding: 22px 20px 20px;
  }

  .news-card {
    padding: 22px 20px 20px;
  }

  .news-card-head {
    flex-wrap: wrap;
    gap: 10px;
  }

  .research-card .card-title,
  .research-card .card-copy {
    max-width: none;
  }

  .news-card .card-title,
  .news-card .card-copy {
    max-width: none;
  }

  body[data-page="home"] .page-content > .section-block {
    padding: 18px 18px 36px;
  }

  body[data-page="home"] .section-intro {
    margin-bottom: 14px;
  }

  body[data-page="home"] .section-intro-heading {
    grid-template-columns: 1fr;
    gap: 4px;
    align-items: start;
  }

  body[data-page="home"] .section-intro .section-kicker {
    font-size: 1.08rem;
    letter-spacing: 0.14em;
  }

  body[data-page="home"] .section-intro .section-title {
    white-space: normal;
    font-size: clamp(1.72rem, 7vw, 2.45rem);
  }

  .page-band-home {
    min-height: 500px;
  }

  .page-band-shell {
    min-height: 280px;
  }

  .page-band-copy,
  .home-hero {
    width: min(100% - 24px, 1180px);
  }

  .home-hero-title {
    font-size: clamp(1.95rem, 8.6vw, 2.8rem);
  }

  .home-scroll-indicator {
    bottom: 10px;
    padding: 9px 14px 11px;
  }

  .home-scroll-indicator-label {
    font-size: 0.66rem;
    letter-spacing: 0.14em;
  }

  .metric-grid,
  .home-overview-grid,
  .research-grid,
  .news-grid,
  .team-grid,
  .workflow-track {
    grid-template-columns: 1fr;
  }

  .member-detail-dialog {
    padding: 16px;
  }

  .member-detail-sheet {
    padding: 22px 18px 18px;
  }

  .member-contact-list {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

/* ============================================================
   Premium Polish Layer — 科研机构质感升级
   统一放在基础样式之后，利用层叠覆盖，不改变结构
   ============================================================ */

/* ---------- 1. 字体渲染与排版质感 ---------- */
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-feature-settings: "kern", "liga", "tnum";
  letter-spacing: 0.01em;
}

::selection {
  background: rgba(221, 62, 20, 0.16);
  color: var(--ink);
}

/* 标题更收紧、更有分量 */
.home-hero-title,
.page-title,
.section-title {
  letter-spacing: -0.045em;
  font-weight: 750;
}

.section-kicker,
.small-caps {
  letter-spacing: 0.22em;
}

/* ---------- 2. 氛围背景：更克制、更纸感 ---------- */
body {
  background:
    radial-gradient(1200px 600px at 85% -5%, rgba(221, 62, 20, 0.045), transparent 60%),
    linear-gradient(180deg, #fbfbfa 0%, #f7f5f2 100%);
}

body[data-page="home"] .page-content > .section-block:nth-of-type(even) {
  background: #f2f0ec;
}

/* ---------- 3. 顶栏：滚动时收细 + 毛玻璃 ---------- */
.site-header {
  min-height: var(--header-height);
  background: rgba(16, 15, 20, 0.92);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  transition: min-height 320ms cubic-bezier(0.22, 1, 0.36, 1), background-color 320ms ease, box-shadow 320ms ease;
}

.site-header.is-scrolled {
  min-height: 64px;
  background: rgba(16, 15, 20, 0.96);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
}

.header-inner {
  min-height: inherit;
  transition: min-height 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.brand-mark-panel {
  transition: height 320ms cubic-bezier(0.22, 1, 0.36, 1), transform 240ms ease;
}

.site-header.is-scrolled .brand-mark-panel {
  height: 44px;
}

.site-nav a {
  transition: color 240ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: #fff;
}

.site-nav a::after {
  bottom: 6px;
  height: 2px;
  transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 4. 主视觉：图片轻微推进 + 文字层次 ---------- */
.page-band-media img {
  transform: scale(1.06);
  animation: band-settle 2200ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes band-settle {
  to {
    transform: scale(1);
  }
}

.page-band-overlay {
  background: linear-gradient(90deg, rgba(8, 8, 10, 0.92) 0%, rgba(8, 8, 10, 0.66) 42%, rgba(8, 8, 10, 0.12) 100%);
}

.page-title {
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.title-rule {
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, rgba(221, 62, 20, 0.35) 100%);
}

/* ---------- 5. 按钮：更顺滑的缓动与层次 ---------- */
.button-link,
.text-link,
.ghost-button {
  transition: transform 280ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 280ms cubic-bezier(0.22, 1, 0.36, 1),
    background-color 240ms ease, color 240ms ease, border-color 240ms ease;
}

.button-link--light {
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
}

.button-link--light:hover,
.button-link--light:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.18);
}

.button-link--ghost:hover,
.button-link--ghost:focus-visible {
  transform: translateY(-2px);
  background: rgba(221, 62, 20, 0.16);
}

.ghost-button:hover,
.ghost-button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(17, 17, 17, 0.1);
}

/* 全局键盘焦点环 */
a:focus-visible,
button:focus-visible {
  outline: 2px solid rgba(221, 62, 20, 0.65);
  outline-offset: 3px;
}

/* ---------- 6. 卡片体系：柔和阴影 + 顶部红线动效 ---------- */
.panel,
.list-card,
.detail-card,
.member-card,
.research-card,
.publication-card,
.news-card,
.contact-card,
.timeline-item,
.workflow-card {
  border: 1px solid rgba(184, 173, 162, 0.42);
  box-shadow: 0 1px 2px rgba(17, 17, 17, 0.03), 0 12px 32px rgba(17, 17, 17, 0.05);
  transition: transform 380ms cubic-bezier(0.22, 1, 0.36, 1),
    border-color 380ms ease,
    box-shadow 380ms cubic-bezier(0.22, 1, 0.36, 1);
}

.research-card::before,
.publication-card::before,
.news-card::before {
  opacity: 0.85;
  transform: scaleX(0.35);
  transform-origin: left;
  transition: transform 480ms cubic-bezier(0.22, 1, 0.36, 1);
}

.research-card:hover::before,
.publication-card:hover::before,
.news-card:hover::before,
.research-card:focus-within::before,
.publication-card:focus-within::before,
.news-card:focus-within::before {
  transform: scaleX(1);
}

.research-card:hover,
.publication-card:hover,
.news-card:hover,
.member-card-button:hover,
.research-card:focus-within,
.publication-card:focus-within,
.news-card:focus-within,
.member-card-button:focus-visible {
  transform: translateY(-5px);
  border-color: rgba(221, 62, 20, 0.3);
  box-shadow: 0 2px 4px rgba(17, 17, 17, 0.04), 0 24px 48px rgba(17, 17, 17, 0.1);
}

/* 首页入口卡片：箭头更有引导感 */
.link-panel {
  transition: transform 380ms cubic-bezier(0.22, 1, 0.36, 1),
    border-color 380ms ease,
    box-shadow 380ms cubic-bezier(0.22, 1, 0.36, 1);
}

.link-panel:hover {
  transform: translateY(-5px);
  border-color: rgba(221, 62, 20, 0.3);
  box-shadow: 0 2px 4px rgba(17, 17, 17, 0.04), 0 24px 48px rgba(17, 17, 17, 0.1);
}

.link-panel-arrow {
  transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.link-panel:hover .link-panel-arrow {
  transform: translateX(8px);
}

/* ---------- 7. 图片：悬浮轻推，画框更精致 ---------- */
.media-frame {
  border: 1px solid rgba(184, 173, 162, 0.5);
  box-shadow: 0 1px 2px rgba(17, 17, 17, 0.04), 0 14px 34px rgba(17, 17, 17, 0.06);
}

.media-frame img {
  transition: transform 700ms cubic-bezier(0.22, 1, 0.36, 1), filter 700ms ease;
}

.media-frame:hover img {
  transform: scale(1.035);
}

.member-card-media .media-frame img {
  filter: saturate(0.92);
}

.member-card-button:hover .member-card-media .media-frame img,
.member-card-button:focus-visible .member-card-media .media-frame img {
  filter: saturate(1);
}

/* 成员卡片动作链接 */
.member-card-action {
  transition: letter-spacing 320ms ease, color 240ms ease;
}

.member-card-button:hover .member-card-action {
  letter-spacing: 0.08em;
}

/* ---------- 8. 弹窗：毛玻璃背景 + 入场动效 ---------- */
.member-detail-dialog {
  background: rgba(10, 10, 12, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  animation: dialog-fade 280ms ease;
}

.member-detail-sheet {
  border: 1px solid rgba(184, 173, 162, 0.4);
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.28);
  animation: sheet-rise 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

.member-detail-close {
  transition: transform 280ms cubic-bezier(0.22, 1, 0.36, 1), border-color 240ms ease, color 240ms ease;
}

.member-detail-close:hover,
.member-detail-close:focus-visible {
  transform: rotate(90deg);
}

@keyframes dialog-fade {
  from {
    opacity: 0;
  }
}

@keyframes sheet-rise {
  from {
    opacity: 0;
    transform: translateY(22px) scale(0.985);
  }
}

/* ---------- 9. 明细列表与标签：更细的分隔线 ---------- */
.detail-list li,
.position-list li {
  border-top: 1px solid rgba(184, 173, 162, 0.32);
  padding: 12px 0;
}

.tag-list li,
.social-list a {
  border: 1px solid rgba(184, 173, 162, 0.42);
  background: rgba(255, 255, 255, 0.7);
  transition: border-color 240ms ease, color 240ms ease, transform 280ms cubic-bezier(0.22, 1, 0.36, 1);
}

.tag-list li:hover,
.social-list a:hover {
  border-color: rgba(221, 62, 20, 0.35);
  color: var(--accent);
  transform: translateY(-1px);
}

/* ---------- 10. 页脚与滚动条 ---------- */
.site-footer {
  background: #0a0a0d;
}

.footer-nav a {
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  transition: color 240ms ease;
}

.footer-copy span {
  letter-spacing: 0.02em;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-thumb {
  background: rgba(116, 107, 101, 0.35);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(116, 107, 101, 0.6);
  background-clip: content-box;
}

::-webkit-scrollbar-track {
  background: transparent;
}

/* ---------- 11. 入场动效：更高级的缓动 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 680ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 680ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 12. 章节节奏与指标数字 ---------- */
.section-block {
  padding: 26px 0 64px;
}

.section-block + .section-block {
  border-top: 1px solid rgba(184, 173, 162, 0.28);
}

.metric-value {
  font-size: 2.1rem;
  font-variant-numeric: tabular-nums;
}

/* 流程卡片箭头更细腻 */
.workflow-card::after {
  border-color: rgba(221, 62, 20, 0.4);
  transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.workflow-card:hover::after {
  transform: rotate(45deg) translate(3px, -3px);
}

/* 黑色 callout 块更精致 */
.callout {
  border: 1px solid rgba(221, 62, 20, 0.22);
  background: linear-gradient(135deg, #0b0b0e 0%, #15151a 100%);
}

/* ============================================================
   Premium Polish Layer 结束
   ============================================================ */

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal,
  .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}