.season-wall {
  --ink: #15213a;
  --paper: #eef0df;
  --lime: #d9e77e;
  --mono: "SFMono-Regular", "Roboto Mono", Menlo, monospace;
  --serif: "Songti SC", STSong, "Noto Serif SC", "Times New Roman", serif;
  --sans: Inter, "Helvetica Neue", "PingFang SC", "Microsoft YaHei UI", sans-serif;
}

.season-wall,
.season-wall * { box-sizing: border-box; }

.season-wall a { color: inherit; text-decoration: none; }

.season-wall img { display: block; width: 100%; height: 100%; }

/* The official site's fixed header already identifies this section. */
.season-wall .wall-header { display: none; }

.season-wall {
  position: relative;
  width: 100%;
  height: 100svh;
  min-height: 520px;
  overflow: hidden;
  isolation: isolate;
  color: #fff;
  font-family: var(--serif);
  background: var(--ink);
}

.season-panels {
  position: absolute;
  z-index: 0;
  inset: 0;
  display: flex;
  overflow: hidden;
  background: var(--ink);
}

.season-panel {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  height: 100%;
  overflow: hidden;
  cursor: crosshair;
  outline: none;
  border-right: 1px solid rgba(18, 28, 45, .74);
  transition: flex-grow .6s cubic-bezier(.2,.8,.2,1), filter .6s ease;
}

.season-panel:last-child { border-right: 0; }

.panel-image,
.panel-image img,
.panel-shade { position: absolute; inset: 0; }

.panel-image { overflow: hidden; }

.panel-image img {
  object-fit: cover;
  filter: saturate(.78) brightness(.74) contrast(1.04);
  transform: scale(1.035);
  transition: transform .75s cubic-bezier(.2,.8,.2,1), filter .75s ease;
  will-change: transform;
}

.panel-spring .panel-image img { object-position: 51% center; }
.panel-summer .panel-image img { object-position: 51% center; }
.panel-autumn .panel-image img { object-position: center center; }
.panel-winter .panel-image img { object-position: 50% center; }

.panel-shade {
  background:
    linear-gradient(180deg, rgba(4, 12, 22, .28) 0%, rgba(4, 12, 22, .03) 44%, rgba(4, 12, 22, .52) 100%),
    linear-gradient(90deg, rgba(4, 12, 22, .1), transparent 58%, rgba(4, 12, 22, .14));
  pointer-events: none;
  transition: background .6s ease;
}

.panel-info {
  position: absolute;
  z-index: 2;
  top: clamp(88px, 13vh, 155px);
  left: 11%;
  right: 8%;
  display: grid;
  gap: 7px;
  padding: 11px 0 0;
  border-left: 0;
  color: #fff;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity .42s ease, transform .55s cubic-bezier(.2,.8,.2,1);
  pointer-events: none;
}

.panel-info { font-family: var(--serif); color: var(--lime); }
.panel-info strong,
.panel-info span { color: var(--lime); font-size: clamp(14px, .95vw, 16px); line-height: 1.5; letter-spacing: 0; white-space: normal; }
.panel-info strong { font-family: var(--sans); font-weight: 800; }
.panel-info span { font-family: var(--serif); font-weight: 400; letter-spacing: .08em; }

.season-panel:hover,
.season-panel:focus-visible,
.season-panel.is-active { z-index: 3; }

.season-panel:hover,
.season-panel:focus-visible,
.season-panel.is-active { flex: 3.4 1 0; }

.season-panel:hover .panel-image img,
.season-panel:focus-visible .panel-image img,
.season-panel.is-active .panel-image img { filter: saturate(1) brightness(.92) contrast(1.04); transform: scale(1.075); }

.season-panel:hover .panel-info,
.season-panel:focus-visible .panel-info,
.season-panel.is-active .panel-info { opacity: 1; transform: translateY(0); }

.season-panels:has(.season-panel:hover) .season-panel:not(:hover) .panel-image img,
.season-panels:has(.season-panel.is-active) .season-panel:not(.is-active) .panel-image img { filter: saturate(1) brightness(.63); }

.wall-header,
.wall-copy,
.wall-hint { position: absolute; z-index: 5; pointer-events: none; }

.wall-header {
  top: 25px;
  left: clamp(22px, 4.6vw, 70px);
  right: clamp(22px, 4.6vw, 70px);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  color: #f3f4e8;
  mix-blend-mode: difference;
}

.wall-brand { display: grid; gap: 5px; pointer-events: auto; }
.wall-brand span { font-size: 19px; font-weight: 700; line-height: 1; letter-spacing: .04em; }
.wall-brand small,
.wall-mark,
.wall-hint { font-family: var(--mono); font-size: 9px; letter-spacing: .12em; }
.wall-brand small { opacity: .78; }
.wall-mark { padding-top: 3px; opacity: .76; }

.wall-copy {
  left: clamp(24px, 6vw, 92px);
  bottom: clamp(34px, 7.5vh, 96px);
  max-width: min(590px, 58vw);
  color: #fff;
  text-shadow: 0 2px 18px rgba(0, 0, 0, .5);
}

.wall-kicker {
  margin: 0 0 clamp(18px, 2.3vh, 30px);
  color: var(--lime);
  font-family: var(--mono);
  font-size: clamp(9px, .8vw, 12px);
  letter-spacing: .14em;
  line-height: 1.4;
}

.wall-kicker span { padding: 0 .4em; color: rgba(217, 231, 126, .72); }

.wall-copy h1 {
  margin: 0;
  font-size: clamp(38px, 5vw, 88px);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.03;
  white-space: nowrap;
}

.wall-quote {
  margin-top: clamp(18px, 2.7vh, 34px);
  color: var(--lime);
  font-family: var(--serif);
  font-size: clamp(17px, 1.25vw, 22px);
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: .08em;
}

.wall-quote p { margin: 0; color: inherit; font: inherit; }

.wall-hint {
  right: clamp(22px, 4.6vw, 70px);
  bottom: clamp(35px, 5.5vh, 62px);
  display: flex;
  align-items: center;
  gap: 15px;
  color: rgba(255, 255, 255, .72);
}

.wall-hint i { display: block; width: 42px; height: 1px; background: currentColor; animation: hint-line 1.8s ease-in-out infinite; }

.season-wall .wall-hint { display: flex; }
.season-wall .wall-hint span { display: none; }

@keyframes hint-line { 0%, 100% { transform: scaleX(.55); transform-origin: left; opacity: .4; } 50% { transform: scaleX(1); transform-origin: left; opacity: 1; } }

@media (max-width: 700px) {
  .season-wall { min-height: 460px; }
  .season-panels { display: flex; }
  .season-panel,
  .season-panel:first-child,
  .season-panel:last-child { flex: .7 1 0; border-right: 1px solid rgba(18, 28, 45, .7); }
  .season-panel:hover:not(.is-active),
  .season-panel:focus-visible:not(.is-active) { flex: .7 1 0; z-index: 0; }
  .season-panel.is-active { flex: 2.4 1 0; z-index: 3; }
  .season-panel:hover:not(.is-active) .panel-image img,
  .season-panel:focus-visible:not(.is-active) .panel-image img { filter: saturate(.72) brightness(.7) contrast(1.04); transform: scale(1.03); }
  .season-panel:hover:not(.is-active) .panel-info,
  .season-panel:focus-visible:not(.is-active) .panel-info { opacity: 0; transform: translateY(-8px); }
  .panel-image img { filter: saturate(.72) brightness(.7) contrast(1.04); transform: scale(1.03); }
  .panel-info { top: 12vh; left: 8%; right: 6%; gap: 5px; padding: 8px 0 0; }
  .panel-info strong,
  .panel-info span { font-size: clamp(10px, 2.5vw, 11px); line-height: 1.5; white-space: normal; }
  .wall-header { top: 19px; left: 18px; right: 18px; }
  .wall-brand span { font-size: 16px; }
  .wall-brand small { font-size: 7px; }
  .wall-mark { font-size: 8px; }
  .wall-copy { left: 20px; right: 17px; bottom: 29px; max-width: none; }
  .wall-kicker { margin-bottom: 15px; font-size: 8px; }
  .wall-copy h1 { font-size: clamp(24px, 7.35vw, 41px); font-weight: 900; line-height: 1.03; }
  .wall-quote { margin-top: 16px; font-size: clamp(12px, 3.15vw, 14px); line-height: 1.8; letter-spacing: .08em; }
  .season-wall .wall-hint { display: none; }
}

/* Android mobile fallback: keep the panel expansion, but avoid GPU image-layer
   reuse caused by simultaneous transform/filter animation on narrow screens. */
@media (max-width: 700px) {
  html.android-mobile .season-wall .panel-image {
    opacity: .68;
    transition: opacity .6s cubic-bezier(.2,.8,.2,1);
  }

  html.android-mobile .season-wall .season-panel.is-active .panel-image {
    opacity: 1;
  }

  html.android-mobile .season-wall .panel-image img,
  html.android-mobile .season-wall .season-panel.is-active .panel-image img,
  html.android-mobile .season-wall .season-panel:hover .panel-image img,
  html.android-mobile .season-wall .season-panel:focus-visible .panel-image img,
  html.android-mobile .season-wall .season-panels:has(.season-panel.is-active) .season-panel:not(.is-active) .panel-image img {
    filter: none;
    transform: none;
    transition: none;
    will-change: auto;
  }

  html.android-mobile .season-wall .season-panel.is-active .panel-image {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .season-wall *,
  .season-wall *::before,
  .season-wall *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}