:root {
  color-scheme: dark;
  --theme-bg: #141727;
  --theme-bg-soft: #1c2033;
  --theme-text: #f0e5d7;
  --theme-muted: #9ea6ae;
  --theme-accent: #f25c78;
  --theme-accent-alt: #7898a8;
  --theme-line: #eadbcb;
  --theme-shadow: rgba(5, 5, 8, 0.42);
  --gallery-black: #050505;
  --scroll-progress: 0;
  font-family: Inter, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--theme-bg);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--theme-bg);
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(
      90deg,
      var(--theme-bg) 0%,
      var(--theme-bg) 25%,
      color-mix(in srgb, var(--theme-bg-soft) 60%, var(--gallery-black)) 32%,
      var(--gallery-black) 39%,
      var(--gallery-black) 100%
    );
  color: var(--theme-text);
  transition: background-color 700ms ease;
}

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

button {
  color: inherit;
}

.site-shell {
  min-height: 100vh;
}

.home-back {
  position: fixed;
  top: clamp(20px, 3vh, 30px);
  left: clamp(20px, 4vw, 54px);
  z-index: 20;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px 9px 13px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--theme-text);
  background: color-mix(in srgb, var(--theme-bg) 60%, transparent);
  border: 1px solid color-mix(in srgb, var(--theme-line) 26%, transparent);
  border-radius: 999px;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px var(--theme-shadow);
  transition: color 220ms ease, border-color 220ms ease, background 220ms ease, transform 220ms ease;
}

.home-back:hover {
  color: var(--theme-accent);
  border-color: color-mix(in srgb, var(--theme-accent) 58%, transparent);
  transform: translateY(-1px);
}

.home-back-arrow {
  font-size: 14px;
  line-height: 1;
  transition: transform 220ms ease;
}

.home-back:hover .home-back-arrow {
  transform: translateX(-3px);
}

.stage {
  position: fixed;
  inset: 0;
  display: grid;
  grid-template-columns: minmax(360px, 42vw) minmax(0, 1fr) 92px;
  height: 100vh;
  min-height: 720px;
  overflow: hidden;
  background:
    linear-gradient(
      90deg,
      var(--theme-bg) 0%,
      var(--theme-bg) 25%,
      color-mix(in srgb, var(--theme-bg-soft) 60%, var(--gallery-black)) 32%,
      var(--gallery-black) 39%,
      var(--gallery-black) 100%
    );
  transition: background 700ms ease, color 700ms ease;
}

.stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.42;
  mask-image: linear-gradient(90deg, #000 0%, #000 25%, rgba(0, 0, 0, 0.42) 32%, transparent 39%);
}

.text-panel {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 54px 54px 42px;
  color: var(--theme-text);
}

.topline,
.theme-name,
.meta-grid,
.photo-caption,
.photo-info,
.rail-head {
  font-size: 11px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0;
  text-transform: uppercase;
}

.topline {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--theme-muted);
}

.dot {
  width: 7px;
  height: 7px;
  background: var(--theme-accent);
  border-radius: 999px;
  box-shadow: 0 0 18px color-mix(in srgb, var(--theme-accent) 72%, transparent);
}

.title-wrap {
  margin-top: 32px;
  max-width: 520px;
}

.hero-title {
  display: flex;
  flex-direction: column;
  margin: 0;
  color: var(--theme-text);
  font-family: Impact, "Arial Black", "Bahnschrift Condensed", "Arial Narrow", sans-serif;
  font-size: 88px;
  font-weight: 900;
  line-height: 0.84;
  letter-spacing: 0;
  text-transform: uppercase;
  text-wrap: balance;
  text-shadow: 0 20px 40px var(--theme-shadow);
}

.rule-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
}

.accent-rule {
  display: block;
  width: 216px;
  height: 5px;
  background: var(--theme-accent);
  transform-origin: left center;
}

.theme-name {
  color: var(--theme-muted);
}

.location-cn {
  margin: 22px 0 0;
  color: color-mix(in srgb, var(--theme-text) 82%, var(--theme-muted));
  font-family: "Microsoft YaHei UI", "Noto Sans SC", "PingFang SC", sans-serif;
  font-size: 35px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
}

.brush-note {
  width: min(100%, 500px);
  margin: 18px 0 0;
  overflow-wrap: anywhere;
  color: var(--theme-accent);
  font-family: "Segoe Script", "Bradley Hand ITC", "Comic Sans MS", cursive;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0;
  text-transform: lowercase;
  text-shadow: 0 10px 24px var(--theme-shadow);
  transform: rotate(-1deg);
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  width: min(100%, 500px);
  margin: 70px 0 0;
  color: var(--theme-text);
}

.meta-grid div {
  min-width: 0;
}

.meta-grid dt {
  margin-bottom: 7px;
  color: var(--theme-accent);
}

.meta-grid dd {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--theme-muted);
}

.caption {
  width: min(100%, 410px);
  margin: 28px 0 0 126px;
  color: color-mix(in srgb, var(--theme-text) 90%, var(--theme-muted));
  font-family: Georgia, "Times New Roman", serif;
  font-size: 14px;
  font-style: italic;
  line-height: 1.55;
}

.palette-row {
  display: flex;
  gap: 8px;
  margin-top: 54px;
}

.color-chip {
  width: 28px;
  height: 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.photo-panel {
  --photo-shift-x: clamp(-240px, -9vw, -140px);
  --album-strip-bottom: clamp(26px, 4vh, 46px);
  --album-strip-height: 42px;
  --photo-strip-gap: 18px;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 0;
  height: 100%;
  min-height: 0;
  min-width: 0;
  padding: 38px clamp(18px, 2.5vw, 42px)
    calc(var(--album-strip-bottom) + var(--album-strip-height) + var(--photo-strip-gap)) 0;
  overflow: visible;
}

.photo-panel::before {
  display: none;
}

.photo-frame {
  position: relative;
  width: min(100%, 920px);
  height: min(80vh, 760px);
  margin: 0;
  overflow: hidden;
  background: transparent;
  box-shadow: none;
  transform: translateX(var(--photo-shift-x));
  transition:
    width 520ms cubic-bezier(0.2, 0.8, 0.2, 1),
    height 520ms cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 520ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.photo-frame.is-landscape {
  width: min(100%, 1274px);
  height: min(86vh, 884px);
}

.photo-frame.is-portrait {
  align-self: center;
  width: min(100%, 930px);
  height: min(90vh, 1040px);
  transform: translateX(0);
}

.photo-frame.is-square {
  width: min(100%, 680px);
  height: min(78vh, 680px);
}

.photo-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: transparent;
  transform: translate3d(0, 0, 0) scale(1);
  transition:
    opacity 420ms ease,
    filter 420ms ease,
    transform 720ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.photo-frame.is-photo-changing img {
  opacity: 0;
  filter: blur(4px);
}

.photo-frame[data-direction="next"].is-photo-changing img {
  transform: translate3d(34px, 0, 0) scale(0.985);
}

.photo-frame[data-direction="prev"].is-photo-changing img {
  transform: translate3d(-34px, 0, 0) scale(0.985);
}

.photo-frame.is-photo-loaded img {
  opacity: 1;
  filter: blur(0);
}

.is-ready .photo-frame img {
  animation: photo-in 780ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.photo-caption,
.photo-info {
  position: absolute;
  z-index: 2;
  display: flex;
  gap: 14px;
  align-items: center;
  color: rgba(255, 255, 255, 0.82);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.62);
}

.photo-caption {
  top: 18px;
  right: 22px;
}

.photo-info {
  right: 22px;
  bottom: 18px;
}

.album-strip {
  position: absolute;
  left: 50%;
  bottom: var(--album-strip-bottom);
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(var(--album-count, 1), minmax(4px, 1fr));
  gap: 5px;
  align-items: center;
  width: min(calc(100% - 72px), 820px);
  max-width: 820px;
  min-height: 36px;
  padding: 12px 14px;
  overflow: hidden;
  scrollbar-width: none;
  user-select: none;
  touch-action: pan-y;
  cursor: grab;
  background: color-mix(in srgb, #000 42%, transparent);
  border: 1px solid color-mix(in srgb, var(--theme-line) 18%, transparent);
  backdrop-filter: blur(12px);
  box-shadow: -18px 20px 50px color-mix(in srgb, var(--theme-shadow) 72%, transparent);
  transform: translateX(-50%);
}

.album-strip.is-scrubbing {
  cursor: grabbing;
}

.album-strip[hidden] {
  display: none;
}

.album-strip::-webkit-scrollbar {
  display: none;
}

.album-bar {
  position: relative;
  width: 100%;
  min-width: 0;
  height: 16px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  opacity: 0.72;
}

.album-bar span {
  position: absolute;
  inset: 7px 0 auto;
  height: 3px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.26);
  transform-origin: left center;
  transition:
    background-color 260ms ease,
    box-shadow 260ms ease,
    opacity 260ms ease;
}

.album-bar:hover span {
  background: rgba(255, 255, 255, 0.52);
}

.album-bar.is-active span {
  background: var(--theme-accent);
  box-shadow: 0 0 18px color-mix(in srgb, var(--theme-accent) 62%, transparent);
}

.preview-rail {
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) 180px;
  gap: 18px;
  padding: 38px 14px;
  background: rgba(0, 0, 0, 0.72);
  border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.rail-head {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
  color: rgba(255, 255, 255, 0.7);
  writing-mode: vertical-rl;
}

.preview-window {
  position: relative;
  min-height: 0;
  overflow: hidden;
}

.preview-track {
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 760ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.preview-card {
  position: relative;
  width: 64px;
  height: 72px;
  padding: 0;
  overflow: hidden;
  cursor: pointer;
  background: #101010;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 0;
  opacity: 0.48;
  transition: opacity 240ms ease, border-color 240ms ease, transform 240ms ease;
}

.preview-card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #050505;
}

.preview-card span {
  position: absolute;
  right: 5px;
  bottom: 4px;
  font-size: 10px;
  font-weight: 800;
  color: white;
  text-shadow: 0 2px 8px black;
}

.preview-card.is-active {
  opacity: 1;
  border-color: var(--theme-accent);
  transform: translateX(-6px);
}

.rail-progress {
  width: 3px;
  height: 100%;
  justify-self: center;
  background: var(--theme-accent);
  transform-origin: top center;
  transition: transform 760ms cubic-bezier(0.2, 0.8, 0.2, 1), background-color 700ms ease;
}

.scroll-space {
  height: 100vh;
}

.reveal-line,
.reveal-title span {
  opacity: 0;
  clip-path: inset(0 100% 0 0);
  transform: translate3d(-28px, 0, 0);
}

.is-ready .reveal-line,
.is-ready .reveal-title span {
  animation: reveal-left 860ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.is-ready .reveal-title span:nth-child(1) {
  animation-delay: 80ms;
}

.is-ready .reveal-title span:nth-child(2) {
  animation-delay: 180ms;
}

.is-ready [data-reveal]:nth-of-type(1) {
  animation-delay: 40ms;
}

.is-ready [data-reveal]:nth-of-type(2) {
  animation-delay: 260ms;
}

.is-ready [data-reveal]:nth-of-type(3) {
  animation-delay: 360ms;
}

.is-ready [data-reveal]:nth-of-type(4) {
  animation-delay: 460ms;
}

.is-ready [data-reveal]:nth-of-type(5) {
  animation-delay: 560ms;
}

.is-ready [data-reveal]:nth-of-type(6) {
  animation-delay: 660ms;
}

@keyframes reveal-left {
  from {
    opacity: 0;
    clip-path: inset(0 100% 0 0);
    transform: translate3d(-28px, 0, 0);
  }
  to {
    opacity: 1;
    clip-path: inset(0 0 0 0);
    transform: translate3d(0, 0, 0);
  }
}

@keyframes photo-in {
  from {
    opacity: 0;
    transform: translate3d(36px, 0, 0) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
  }
}

@media (max-width: 980px) {
  body {
    background: var(--theme-bg);
  }

  .stage {
    position: relative;
    grid-template-columns: 1fr;
    min-height: 100vh;
    overflow: visible;
    background: var(--theme-bg);
  }

  .stage::before {
    mask-image: none;
  }

  .text-panel {
    justify-content: flex-start;
    min-height: 48vh;
    padding: 84px 28px 24px;
  }

  .hero-title {
    font-size: 64px;
  }

  .photo-panel {
    --photo-shift-x: 0px;
    height: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
    align-items: stretch;
    padding: 0 28px 84px;
    background: var(--theme-bg);
  }

  .photo-panel::before,
  .preview-rail {
    display: none;
  }

  .photo-frame {
    width: 100%;
    height: 46vh;
  }

  .photo-frame.is-landscape,
  .photo-frame.is-portrait,
  .photo-frame.is-square {
    width: 100%;
    height: 46vh;
  }

  .album-strip {
    width: 100%;
    max-width: none;
    left: 50%;
    bottom: 28px;
    grid-template-columns: repeat(var(--album-count, 1), minmax(3px, 1fr));
    gap: 3px;
  }

  .album-bar {
    height: 18px;
  }

  .caption {
    margin-left: 0;
  }
}

@media (max-width: 620px) {
  .hero-title {
    font-size: 50px;
  }

  .location-cn {
    font-size: 28px;
  }

  .brush-note {
    font-size: 16px;
  }

  .meta-grid {
    grid-template-columns: 1fr;
    margin-top: 40px;
  }

  .accent-rule {
    width: 136px;
  }
}

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