:root {
  --bg: #070708;
  --bg-alt: #0d0d0f;
  --surface: rgba(12, 12, 16, 0.72);
  --surface-strong: rgba(17, 17, 22, 0.92);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f4f4f6;
  --text-soft: #c8c8d0;
  --text-muted: #8a8a96;
  --text-faint: #4a4a55;
  --glow: rgba(187, 193, 217, 0.16);
  --shadow: 0 32px 80px rgba(0, 0, 0, 0.42);
  --max-width: 1180px;
  --radius: 24px;
  --header-height: 92px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text-soft);
  font-family: "Space Grotesk", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-weight: 300;
  line-height: 1.6;
  background:
    radial-gradient(circle at top left, rgba(136, 145, 180, 0.12), transparent 24%),
    radial-gradient(circle at 86% 12%, rgba(255, 255, 255, 0.06), transparent 18%),
    linear-gradient(180deg, #060607 0%, #09090b 42%, #060607 100%);
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

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

.page-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black 34%, transparent 86%);
}

.site-header,
.hero__layout,
.section-shell,
.footer-inner {
  width: min(calc(100% - 48px), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-height);
  padding: 22px 28px;
  border: 1px solid transparent;
  transition:
    background 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
}

.site-header.is-scrolled {
  background: rgba(7, 7, 8, 0.82);
  border-color: var(--line);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.site-logo,
.footer-brand {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.52rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--text);
  text-decoration: none;
}

.site-logo span,
.footer-brand span {
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.language-picker {
  position: relative;
  display: inline-flex;
}

.language-picker::after {
  content: "";
  position: absolute;
  right: 16px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 1px solid var(--text-muted);
  border-bottom: 1px solid var(--text-muted);
  transform: translateY(-65%) rotate(45deg);
  pointer-events: none;
}

.language-picker select {
  appearance: none;
  min-width: 112px;
  height: 46px;
  padding: 0 36px 0 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(11, 11, 14, 0.74);
  color: var(--text);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
}

.language-picker select:hover,
.language-picker select:focus-visible {
  outline: none;
  border-color: rgba(255, 255, 255, 0.26);
  background: rgba(18, 18, 22, 0.94);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 180ms ease, border-color 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
  color: var(--text);
}

.nav-cta {
  padding: 12px 20px;
  border: 1px solid var(--line-strong);
}

.nav-toggle {
  display: none;
  position: relative;
  width: 52px;
  height: 52px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(11, 11, 14, 0.78);
  color: var(--text);
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  position: absolute;
  left: 50%;
  width: 18px;
  height: 1px;
  background: currentColor;
  transform: translateX(-50%);
  transition: transform 180ms ease;
}

.nav-toggle span:first-child {
  top: 21px;
}

.nav-toggle span:last-child {
  top: 30px;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateX(-50%) translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateX(-50%) translateY(-5px) rotate(-45deg);
}

.page-main {
  padding-bottom: 48px;
}

.hero {
  position: relative;
  overflow: clip;
  padding: calc(var(--header-height) + 88px) 0 88px;
}

.hero--home {
  min-height: 100svh;
}

.hero--subpage {
  min-height: 76svh;
  padding-bottom: 72px;
}

.hero-mesh,
.hero-glow {
  position: absolute;
  inset: 0;
}

.hero-mesh {
  width: 100%;
  height: 100%;
  opacity: 0.68;
}

.hero-glow {
  pointer-events: none;
  filter: blur(80px);
}

.hero-glow--one {
  top: -10%;
  left: -8%;
  width: 40vw;
  height: 40vw;
  background: radial-gradient(circle, rgba(205, 209, 224, 0.16), transparent 68%);
}

.hero-glow--two {
  top: 26%;
  right: -8%;
  width: 28vw;
  height: 28vw;
  background: radial-gradient(circle, rgba(136, 153, 212, 0.12), transparent 72%);
}

.hero__layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 64px;
  align-items: end;
}

.hero__copy {
  padding: 56px 0 24px;
}

.eyebrow,
.section-tag,
.panel-kicker,
.metric-label,
.quote-attribution,
.footer-note,
.card__label {
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.eyebrow,
.section-tag,
.panel-kicker {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--text-muted);
}

.eyebrow::before,
.section-tag::before {
  content: "";
  width: 32px;
  height: 1px;
  background: currentColor;
}

.hero-title,
.section-title,
.quote-text,
.metric-value,
.card__title,
.contact-card__name {
  font-family: "Cormorant Garamond", serif;
}

.hero-title {
  margin: 28px 0 0;
  font-size: clamp(4rem, 10vw, 8rem);
  line-height: 0.92;
  font-weight: 300;
  letter-spacing: -0.04em;
  color: var(--text);
}

.hero-title em,
.section-title em,
.quote-text em {
  color: var(--text-muted);
  font-style: italic;
}

.hero-subtitle,
.section-body,
.card__body,
.panel-item p,
.contact-card__description,
.checklist li,
.footer-copy {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.9;
}

.hero-subtitle {
  max-width: 38rem;
  margin-top: 30px;
}

.hero-actions,
.page-cta__actions,
.contact-card__actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-actions {
  margin-top: 44px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  text-decoration: none;
  white-space: nowrap;
  transition:
    color 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

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

.btn-primary {
  background: var(--text);
  color: var(--bg);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #d7d7df;
}

.btn-secondary,
.btn-ghost {
  color: var(--text-soft);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.btn-secondary {
  border: 1px solid var(--line-strong);
}

.btn-ghost {
  padding: 0;
}

.btn-ghost::after,
.card__cta::after {
  content: "→";
  margin-left: 10px;
  transition: transform 180ms ease;
}

.btn-ghost:hover::after,
.btn-ghost:focus-visible::after,
.card:hover .card__cta::after,
.card:focus-visible .card__cta::after {
  transform: translateX(4px);
}

.hero-panel,
.card,
.page-cta,
.contact-card {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 100%),
    rgba(10, 10, 12, 0.64);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: 28px;
  backdrop-filter: blur(16px);
}

.panel-stack {
  display: grid;
  gap: 22px;
  margin-top: 18px;
}

.panel-item {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 16px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

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

.panel-index {
  font-family: "Cormorant Garamond", serif;
  font-size: 1rem;
  color: var(--text-faint);
}

.panel-item h2 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 400;
  color: var(--text);
}

.scroll-indicator {
  position: absolute;
  right: max(24px, calc((100vw - var(--max-width)) / 2));
  bottom: 42px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-faint);
}

.scroll-indicator__line {
  position: relative;
  width: 1px;
  height: 68px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.scroll-indicator__line::after {
  content: "";
  position: absolute;
  inset: -100% 0 auto;
  height: 36px;
  background: rgba(255, 255, 255, 0.72);
  animation: scroll-indicator 2.4s ease-in-out infinite;
}

.scroll-indicator__label {
  writing-mode: vertical-rl;
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(12, 12, 16, 0.86);
  overflow: hidden;
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 72px;
  width: max-content;
  padding: 18px 0;
  animation: marquee 28s linear infinite;
}

.marquee-track span {
  display: inline-flex;
  align-items: center;
  gap: 72px;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-faint);
  white-space: nowrap;
}

.marquee-track span::after {
  content: "◆";
  font-size: 0.42rem;
}

.section-shell {
  padding: 116px 0;
}

.section-shell--compact {
  padding-top: 88px;
  padding-bottom: 88px;
}

.section-header {
  max-width: 48rem;
  margin-bottom: 40px;
}

.section-title {
  margin: 22px 0 0;
  font-size: clamp(2.45rem, 5vw, 4.5rem);
  line-height: 1.05;
  font-weight: 300;
  letter-spacing: -0.03em;
  color: var(--text);
}

.section-body {
  margin-top: 20px;
  max-width: 42rem;
}

.card-grid {
  display: grid;
  gap: 22px;
}

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

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

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

.card {
  display: block;
  padding: 28px;
  border-radius: var(--radius);
  text-decoration: none;
  transition:
    transform 220ms ease,
    background 220ms ease,
    border-color 220ms ease;
}

.card:hover,
.card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 100%),
    rgba(13, 13, 17, 0.8);
}

.card__label {
  margin: 0;
  color: var(--text-faint);
}

.card__title {
  margin: 18px 0 12px;
  font-size: 2rem;
  line-height: 1.08;
  font-weight: 300;
  color: var(--text);
}

.card__cta {
  display: inline-flex;
  align-items: center;
  margin-top: 20px;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.quote-band {
  padding: 24px 24px 0;
}

.quote-band__inner {
  width: min(calc(100% - 48px), 920px);
  margin: 0 auto;
  padding: 88px 0 36px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.quote-text {
  margin: 26px 0 0;
  font-size: clamp(2.6rem, 5vw, 4.4rem);
  line-height: 1.16;
  font-weight: 300;
  color: var(--text);
}

.quote-attribution {
  margin-top: 28px;
  color: var(--text-faint);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.metric {
  padding: 48px 36px;
  background: var(--bg);
}

.metric-value {
  margin: 0;
  font-size: clamp(3.4rem, 8vw, 5rem);
  line-height: 1;
  font-weight: 300;
  letter-spacing: -0.04em;
  color: var(--text);
}

.metric-label {
  margin-top: 14px;
  color: var(--text-muted);
}

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
}

.stack-card {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(12, 12, 16, 0.68);
}

.stack-card__title {
  margin: 0 0 12px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
}

.checklist li {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.checklist li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-cta {
  padding: 34px;
  border-radius: var(--radius);
}

.page-cta__label {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.page-cta__title {
  margin: 18px 0 0;
  font-size: clamp(2.2rem, 5vw, 3.7rem);
  line-height: 1.08;
  font-weight: 300;
  color: var(--text);
  font-family: "Cormorant Garamond", serif;
}

.page-cta__body {
  margin-top: 18px;
  max-width: 40rem;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.9;
}

.page-cta__actions {
  margin-top: 28px;
}

.contact-card {
  padding: 32px;
  border-radius: var(--radius);
}

.contact-card__label {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.contact-card__name {
  margin: 12px 0 8px;
  font-size: 2.1rem;
  line-height: 1.06;
  font-weight: 300;
  color: var(--text);
}

.contact-card__description {
  margin-top: 14px;
}

.contact-card__meta {
  display: grid;
  gap: 14px;
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.contact-card__meta-row {
  display: grid;
  gap: 6px;
}

.contact-card__meta-row span {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.contact-card__meta-row a,
.contact-card__meta-row strong {
  color: var(--text);
  text-decoration: none;
  font-weight: 400;
}

.contact-card__actions {
  margin-top: 26px;
}

.footer {
  padding: 0 0 56px;
}

.footer-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.footer-copy {
  max-width: 34rem;
  margin-top: 12px;
}

.footer-note {
  margin: 0;
  color: var(--text-faint);
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 720ms ease,
    transform 720ms ease;
}

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

.reveal-delay-1 {
  transition-delay: 120ms;
}

.reveal-delay-2 {
  transition-delay: 220ms;
}

.reveal-delay-3 {
  transition-delay: 320ms;
}

:lang(zh) .hero-title,
:lang(zh) .section-title,
:lang(zh) .quote-text,
:lang(zh) .card__title,
:lang(zh) .contact-card__name,
:lang(zh) .site-logo,
:lang(zh) .footer-brand {
  font-family: "Songti SC", "STSong", "Noto Serif SC", serif;
  letter-spacing: 0;
}

:lang(zh) .hero-title,
:lang(zh) .section-title,
:lang(zh) .quote-text {
  line-height: 1.08;
}

:lang(zh) .site-nav a,
:lang(zh) .btn-primary,
:lang(zh) .btn-secondary,
:lang(zh) .btn-ghost,
:lang(zh) .language-picker select,
:lang(zh) .eyebrow,
:lang(zh) .section-tag,
:lang(zh) .panel-kicker,
:lang(zh) .metric-label,
:lang(zh) .quote-attribution,
:lang(zh) .footer-note,
:lang(zh) .card__label,
:lang(zh) .contact-card__label,
:lang(zh) .contact-card__meta-row span {
  letter-spacing: 0.08em;
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

@keyframes scroll-indicator {
  0% {
    transform: translateY(0);
  }

  100% {
    transform: translateY(180px);
  }
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: fixed;
    inset: calc(var(--header-height) + 18px) 24px auto;
    display: grid;
    gap: 18px;
    padding: 24px;
    background: rgba(9, 9, 11, 0.96);
    border: 1px solid var(--line);
    backdrop-filter: blur(18px);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition:
      transform 180ms ease,
      opacity 180ms ease;
  }

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

  .hero__layout,
  .split-grid {
    grid-template-columns: 1fr;
  }

  .card-grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .card-grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scroll-indicator {
    display: none;
  }
}

@media (max-width: 720px) {
  .site-header,
  .hero__layout,
  .section-shell,
  .footer-inner {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .site-header {
    gap: 12px;
    padding: 18px 20px;
  }

  .header-actions {
    gap: 10px;
  }

  .language-picker select {
    min-width: 90px;
    height: 42px;
    padding-left: 14px;
  }

  .hero {
    padding-bottom: 56px;
  }

  .hero__copy {
    padding-top: 30px;
  }

  .hero-title {
    font-size: clamp(3.1rem, 18vw, 5rem);
  }

  .section-shell {
    padding: 88px 0;
  }

  .quote-band {
    padding-inline: 0;
  }

  .quote-band__inner {
    width: min(calc(100% - 28px), 920px);
    padding-top: 72px;
  }

  .card-grid--2,
  .card-grid--3,
  .card-grid--4,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel,
  .card,
  .page-cta,
  .contact-card,
  .stack-card,
  .metric {
    padding: 24px;
  }

  .footer-inner,
  .page-cta__actions,
  .hero-actions,
  .contact-card__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn,
  .btn-secondary {
    width: 100%;
  }

  .btn-ghost {
    justify-content: flex-start;
  }
}

.split-grid .card-grid {
  grid-template-columns: 1fr;
}

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

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

  .reveal {
    opacity: 1;
    transform: none;
  }
}