:root {
  --black: #0d0d0c;
  --paper: #ffffff;
  --white: #ffffff;
  --muted: #9a9994;
  --line: rgba(13, 13, 12, 0.14);
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--black);
  background: #ffffff;
  font-family: Arial, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", sans-serif;
  overflow-x: hidden;
}

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

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

.wechat-share-cover {
  position: fixed;
  left: -9999px;
  top: -9999px;
  z-index: -1;
  width: 1px;
  height: 1px;
  max-width: none;
  opacity: 0;
  pointer-events: none;
}

.cursor {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  width: 5.25rem;
  height: 5.25rem;
  border: 1px solid rgba(255, 255, 255, 0.88);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.72);
  transition: opacity 180ms ease, transform 180ms ease, background 180ms ease;
  mix-blend-mode: difference;
}

.cursor.is-visible {
  opacity: 1;
}

.cursor.is-active {
  background: rgba(255, 255, 255, 0.22);
  transform: translate(-50%, -50%) scale(1);
}

.site-shell {
  width: min(100%, 1600px);
  min-height: 100vh;
  margin: 0 auto;
  padding: clamp(0.8rem, 2vw, 1.5rem);
  display: grid;
  place-items: center;
}

.hero {
  position: relative;
  width: 100%;
  min-height: calc(100vh - clamp(1.6rem, 4vw, 3rem));
  padding: clamp(1rem, 2.2vw, 2rem);
  background: var(--paper);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: clamp(0.85rem, 1.4vw, 1.2rem);
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: -20%;
  pointer-events: none;
}

.hero::before {
  background:
    radial-gradient(circle at 18% 22%, rgba(0, 0, 0, 0.09), transparent 9rem),
    radial-gradient(circle at 78% 16%, rgba(0, 0, 0, 0.06), transparent 11rem),
    radial-gradient(circle at 56% 82%, rgba(0, 0, 0, 0.065), transparent 12rem);
  filter: blur(30px);
  opacity: 0;
  animation: light-open 1600ms var(--ease) 120ms both, light-drift 13s ease-in-out 1700ms infinite alternate;
}

.hero::after {
  background:
    linear-gradient(115deg, transparent 20%, rgba(255, 255, 255, 0.82) 40%, transparent 56%),
    radial-gradient(circle at 72% 68%, rgba(196, 196, 186, 0.18), transparent 14rem);
  opacity: 0;
  transform: translateX(-12%);
  animation: sheen-open 1900ms var(--ease) 380ms both, sheen-pass 9s ease-in-out 2400ms infinite alternate;
}

.opening-veil {
  position: absolute;
  z-index: 8;
  inset: 0;
  pointer-events: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.opening-veil span {
  background: var(--black);
  transform-origin: top;
  animation: veil-lift 1250ms cubic-bezier(0.76, 0, 0.24, 1) both;
}

.opening-veil span + span {
  transform-origin: bottom;
  animation-delay: 120ms;
}

.topbar,
.hero-footer,
.nav-links {
  display: flex;
  align-items: center;
}

.topbar {
  position: relative;
  z-index: 3;
  justify-content: space-between;
  font-size: clamp(0.74rem, 1vw, 0.9rem);
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
  animation: nav-drop 900ms var(--ease) 760ms both;
}

.nav-mark {
  display: inline-flex;
  align-items: center;
  width: clamp(4.4rem, 7vw, 6.2rem);
  padding: 0;
}

.nav-mark img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.nav-links {
  gap: clamp(1rem, 2vw, 2rem);
}

.nav-links a {
  position: relative;
  padding-block: 0.7rem;
}

.nav-links a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0.42rem;
  left: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 240ms var(--ease);
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.eyebrow,
.intro,
.hero-footer {
  margin: 0;
  font-size: clamp(0.74rem, 0.96vw, 0.9rem);
  font-weight: 800;
  line-height: 1.16;
}

.eyebrow,
.hero-footer {
  text-transform: uppercase;
}

.eyebrow {
  color: var(--muted);
}

.intro {
  max-width: 20rem;
  color: #2c2c29;
  text-align: right;
}

.entry-grid {
  position: relative;
  z-index: 2;
  align-self: stretch;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(0.8rem, 1.3vw, 1.1rem);
  perspective: 1200px;
}

.entry-card {
  --rotate-x: 0deg;
  --rotate-y: 0deg;
  --shine-x: 50%;
  --shine-y: 50%;
  position: relative;
  height: clamp(31rem, 74vh, 46rem);
  isolation: isolate;
  border: 1px solid var(--line);
  background: var(--white);
  overflow: hidden;
  clip-path: inset(0);
  transform: translateY(0) scale(1) rotateX(var(--rotate-x)) rotateY(var(--rotate-y));
  transform-style: preserve-3d;
  transition: transform 420ms var(--ease), border-color 420ms var(--ease), box-shadow 420ms var(--ease), clip-path 420ms var(--ease);
  animation: card-reveal-left 1350ms cubic-bezier(0.16, 1, 0.3, 1) 720ms both;
}

.entry-card + .entry-card {
  animation-name: card-reveal-right;
  animation-delay: 880ms;
}

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

.entry-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(circle at var(--shine-x) var(--shine-y), rgba(255, 255, 255, 0.42), transparent 15rem),
    linear-gradient(to top, rgba(0, 0, 0, 0.38), transparent 48%);
  opacity: 0.14;
  transition: opacity 360ms var(--ease);
  pointer-events: none;
  animation: card-glow-in 1200ms var(--ease) 1300ms both;
}

.entry-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1);
  transition: transform 1000ms var(--ease), filter 600ms var(--ease);
  animation: image-settle 1600ms var(--ease) 760ms both;
}

.entry-card-light img {
  object-position: center center;
}

.entry-card-dark img {
  object-position: center center;
}

.card-copy,
.card-action {
  position: absolute;
  z-index: 3;
}

.card-copy {
  right: clamp(0.8rem, 1.3vw, 1.1rem);
  bottom: clamp(0.8rem, 1.3vw, 1.1rem);
  display: grid;
  gap: 0.18rem;
  width: min(13rem, calc(100% - 1.6rem));
  padding: 0.58rem 1.55rem 0.58rem 0.68rem;
  background: rgba(247, 246, 243, 0.78);
  color: var(--black);
  transform: translateZ(36px);
  transition: transform 360ms var(--ease), background 360ms var(--ease);
  animation: copy-rise 760ms var(--ease) 1550ms both;
}

.card-copy::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 0.68rem;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--black);
  transform: translateY(-50%);
}

.card-copy strong {
  font-size: clamp(1.18rem, 1.8vw, 1.55rem);
  font-weight: 900;
  line-height: 0.9;
}

.card-copy small {
  font-size: clamp(0.72rem, 0.88vw, 0.82rem);
  font-weight: 800;
}

.card-action {
  top: clamp(0.75rem, 1.25vw, 1.1rem);
  right: clamp(0.75rem, 1.25vw, 1.1rem);
  display: inline-flex;
  align-items: center;
  gap: 0.44rem;
  min-height: 2.35rem;
  padding: 0.64rem 0.86rem;
  background: rgba(247, 246, 243, 0.92);
  color: var(--black);
  font-size: 0.84rem;
  font-weight: 900;
  line-height: 1;
  transform: translateZ(44px);
  transition: background 260ms var(--ease), color 260ms var(--ease), transform 260ms var(--ease);
  animation: action-pop 720ms var(--ease) 1650ms both;
}

.entry-card-light .card-action {
  background: var(--black);
  color: var(--white);
}

.entry-card-dark .card-action {
  background: rgba(247, 246, 243, 0.95);
  color: var(--black);
}

.card-action span {
  transition: transform 260ms var(--ease);
}

.entry-card:hover,
.entry-card:focus-visible,
.entry-card.is-tapped {
  border-color: rgba(13, 13, 12, 0.36);
  box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.13);
  outline: none;
}

.entry-card:hover::after,
.entry-card:focus-visible::after,
.entry-card.is-tapped::after {
  opacity: 1;
}

.entry-card:hover img,
.entry-card:focus-visible img,
.entry-card.is-tapped img {
  filter: saturate(1.04) contrast(1.04);
  transform: scale(1.045);
}

.entry-card:hover .card-copy,
.entry-card:focus-visible .card-copy,
.entry-card.is-tapped .card-copy {
  background: rgba(255, 255, 255, 0.96);
  transform: translateZ(48px) translateY(-0.2rem);
}

.entry-card:hover .card-action,
.entry-card:focus-visible .card-action,
.entry-card.is-tapped .card-action {
  transform: translateZ(56px) translateX(-0.22rem);
}

.entry-card-light:hover .card-action,
.entry-card-light:focus-visible .card-action,
.entry-card-light.is-tapped .card-action {
  background: rgba(247, 246, 243, 0.95);
  color: var(--black);
}

.entry-card-dark:hover .card-action,
.entry-card-dark:focus-visible .card-action,
.entry-card-dark.is-tapped .card-action {
  background: var(--black);
  color: var(--white);
}

.entry-card:hover .card-action span,
.entry-card:focus-visible .card-action span,
.entry-card.is-tapped .card-action span {
  transform: translateX(0.18rem);
}

.hero-footer {
  position: relative;
  z-index: 2;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--black);
  padding-top: clamp(0.75rem, 1vw, 1rem);
  animation: footer-draw 820ms var(--ease) 1500ms both;
}

.hero-footer p {
  margin: 0;
}

@media (max-width: 820px) {
  .site-shell {
    padding: 0;
    place-items: stretch;
  }

  .hero {
    min-height: 100vh;
    grid-template-rows: auto 1fr auto;
  }

  .entry-grid {
    grid-template-columns: 1fr;
  }

  .entry-card {
    height: clamp(17rem, 36vh, 21rem);
    transform: translateY(0) scale(1) rotateX(0deg) rotateY(0deg);
    animation-duration: 1050ms;
  }

  .entry-card.is-tapped {
    transform: translateY(-0.25rem) scale(0.985);
  }

  .entry-card::after {
    opacity: 0.34;
  }

  .opening-veil {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
  }

  .card-copy {
    width: min(12.8rem, calc(100% - 1.6rem));
  }

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

@media (max-width: 520px) {
  .topbar {
    gap: 1rem;
  }

  .nav-links {
    gap: 0.8rem;
  }

  .hero {
    gap: 1rem;
    padding: 1rem;
  }

  .intro {
    max-width: 12rem;
  }

  .card-action {
    min-height: 2.25rem;
    padding: 0.62rem 0.72rem;
  }

  .cursor {
    display: none;
  }
}

@keyframes lift-in {
  from {
    opacity: 0;
    transform: translateY(1.2rem);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes nav-drop {
  from {
    opacity: 0;
    transform: translateY(-1rem);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes veil-lift {
  0% {
    opacity: 1;
    transform: scaleY(1);
  }

  64% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: scaleY(0);
  }
}

@keyframes card-reveal-left {
  0% {
    opacity: 0;
    clip-path: inset(0 100% 0 0);
    filter: blur(18px);
    transform: translateX(-1.6rem) scale(1.04) rotateX(var(--rotate-x)) rotateY(var(--rotate-y));
  }

  58% {
    opacity: 1;
    clip-path: inset(0);
  }

  100% {
    opacity: 1;
    filter: blur(0);
    transform: translateX(0) scale(1) rotateX(var(--rotate-x)) rotateY(var(--rotate-y));
  }
}

@keyframes card-reveal-right {
  0% {
    opacity: 0;
    clip-path: inset(0 0 0 100%);
    filter: blur(18px);
    transform: translateX(1.6rem) scale(1.04) rotateX(var(--rotate-x)) rotateY(var(--rotate-y));
  }

  58% {
    opacity: 1;
    clip-path: inset(0);
  }

  100% {
    opacity: 1;
    filter: blur(0);
    transform: translateX(0) scale(1) rotateX(var(--rotate-x)) rotateY(var(--rotate-y));
  }
}

@keyframes image-settle {
  from {
    filter: saturate(0.82) contrast(1.12);
    transform: scale(1.12);
  }

  to {
    filter: saturate(1) contrast(1);
    transform: scale(1);
  }
}

@keyframes card-glow-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 0.14;
  }
}

@keyframes label-in {
  from {
    opacity: 0;
    transform: translateY(-0.45rem);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes copy-rise {
  from {
    opacity: 0;
    transform: translateZ(36px) translateY(0.9rem);
  }

  to {
    opacity: 1;
    transform: translateZ(36px) translateY(0);
  }
}

@keyframes action-pop {
  from {
    opacity: 0;
    transform: translateZ(44px) translateY(-0.6rem) scale(0.96);
  }

  to {
    opacity: 1;
    transform: translateZ(44px) translateY(0) scale(1);
  }
}

@keyframes footer-draw {
  from {
    opacity: 0;
    clip-path: inset(0 100% 0 0);
    transform: translateY(0.65rem);
  }

  to {
    opacity: 1;
    clip-path: inset(0);
    transform: translateY(0);
  }
}

@keyframes light-open {
  from {
    opacity: 0;
    transform: scale(0.96);
  }

  to {
    opacity: 0.62;
    transform: scale(1);
  }
}

@keyframes sheen-open {
  from {
    opacity: 0;
    transform: translateX(-24%);
  }

  to {
    opacity: 0.55;
    transform: translateX(-12%);
  }
}

@keyframes light-drift {
  from {
    transform: translate3d(-2%, -1%, 0) scale(1);
  }

  to {
    transform: translate3d(3%, 2%, 0) scale(1.08);
  }
}

@keyframes sheen-pass {
  from {
    transform: translateX(-16%) rotate(0.001deg);
  }

  to {
    transform: translateX(12%) rotate(0.001deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .cursor {
    display: none;
  }
}