:root {
  --ink: #070707;
  --paper: #f0eee8;
  --muted: #96938c;
  --accent: #bba792;
  --pad: clamp(22px, 4vw, 66px);
  --header-h: 104px;
  --serif: STZhongsong, "华文中宋", "Songti SC", STSong, SimSun, serif;
  --display: Baskerville, "Iowan Old Style", Georgia, "Times New Roman", serif;
  --brand: "Bodoni MT", Didot, Baskerville, Georgia, "Times New Roman", serif;
  --sans: "Microsoft YaHei UI", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --condensed: Bahnschrift, "DIN Condensed", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--ink); scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--ink); color: var(--paper); font-family: var(--sans); font-synthesis: none; text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
video, img { display: block; width: 100%; }

#site-header { position: fixed; z-index: 50; inset: 0 0 auto; height: var(--header-h); display: flex; align-items: center; justify-content: space-between; padding: 0 var(--pad); transition: height .35s ease, background .35s ease; }
#site-header.is-scrolled { height: 76px; background: rgba(7,7,7,.82); backdrop-filter: blur(14px); }
.site-nav { display: flex; align-items: center; gap: clamp(20px, 2.6vw, 42px); }
.site-nav a { position: relative; display: grid; gap: 5px; font-size: 11px; font-weight: 500; letter-spacing: .08em; }
.site-nav a small { color: var(--muted); font: 600 7px/1 var(--condensed); letter-spacing: .24em; }
.site-nav a::after { content: ""; position: absolute; left: 0; bottom: -9px; width: 100%; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .3s ease; }
.site-nav a:hover::after, .site-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.site-mark { display: grid; gap: 5px; text-align: right; }
.site-mark span { color: rgba(240,238,232,.8); font: 400 clamp(15px, 1.05vw, 19px)/1 var(--brand); letter-spacing: .015em; }
.site-mark i { margin: 0 .18em; opacity: .4; font-style: normal; }
.site-mark small { color: var(--muted); font: 700 7px/1 var(--condensed); letter-spacing: .2em; }
.menu-toggle { display: none; width: 34px; height: 34px; padding: 7px 0; border: 0; background: transparent; }
.menu-toggle span { display: block; width: 27px; height: 1px; margin: 7px 0; background: currentColor; transition: transform .3s ease; }

.media-stage { position: relative; isolation: isolate; overflow: hidden; background: #0c0c0c; }
.cover-video { position: absolute; z-index: -3; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .94; }
.hero-stage { min-height: 100svh; }
.hero-stage::after { content: ""; position: absolute; z-index: 5; inset: 12px; border: 1px solid transparent; pointer-events: none; transition: inset .4s ease, border-color .4s ease; }
.hero-stage:hover::after { inset: 17px; border-color: rgba(255,255,255,.3); }
.hero-shade, .panel-shade { position: absolute; z-index: -1; inset: 0; pointer-events: none; }
.hero-shade { background: linear-gradient(180deg, rgba(0,0,0,.25), transparent 42%, rgba(0,0,0,.6)); }
.hero-identity { position: absolute; left: var(--pad); bottom: clamp(70px, 10vh, 122px); }
.hero-identity p { margin: 0 0 16px; color: var(--accent); font: 700 8px/1 var(--condensed); letter-spacing: .3em; }
.hero-identity h1 { margin: 0; color: rgba(240,238,232,.72); font: 400 clamp(34px, 3.45vw, 54px)/.9 var(--brand); letter-spacing: -.015em; }
.hero-identity h2 { margin: 12px 0 0; color: rgba(240,238,232,.7); font: 500 clamp(9px, .72vw, 11px)/1.2 var(--condensed); letter-spacing: .22em; }
.hero-project { position: absolute; right: var(--pad); bottom: clamp(72px, 10vh, 122px); display: grid; gap: 7px; min-width: min(250px, 28vw); padding-bottom: 15px; border-bottom: 1px solid rgba(255,255,255,.28); }
.hero-project strong { font: 500 15px/1.2 var(--serif); letter-spacing: .08em; }
.hero-project small { color: rgba(255,255,255,.58); font: 700 8px/1 var(--condensed); letter-spacing: .22em; }

.flow-collection { position: relative; background: var(--ink); }
.collection-title { position: relative; z-index: 4; min-height: 24svh; display: grid; grid-template-columns: auto 1fr auto; align-items: end; gap: 18px; padding: calc(var(--header-h) + 4vh) var(--pad) 5vh; border-top: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); }
.collection-title span { color: var(--muted); font: 700 8px/1 var(--condensed); letter-spacing: .26em; }
.collection-title h2 { margin: 0; font: 400 clamp(28px, 3.2vw, 48px)/1 var(--serif); letter-spacing: .02em; }
.collection-title small { color: var(--accent); font: italic 400 clamp(12px, 1.1vw, 16px)/1 var(--display); letter-spacing: .13em; }
.flow-panel { width: 100%; height: min(100svh, 56.25vw); min-height: 520px; }
.flow-panel .cover-video { opacity: 0; transition: opacity .5s ease, transform 1.1s ease; }
.flow-panel .cover-video[poster] { opacity: 1; }
.flow-panel.is-playing .cover-video { opacity: 1; }
.flow-panel:hover .cover-video { transform: scale(1.012); }
.panel-shade { background: linear-gradient(180deg, rgba(0,0,0,.1), transparent 46%, rgba(0,0,0,.62)); }
.panel-index { position: absolute; top: 50%; left: var(--pad); color: rgba(255,255,255,.72); transform: translateY(-50%); font: 700 9px/1 var(--condensed); letter-spacing: .26em; }
.panel-title { position: absolute; left: 13%; bottom: 9%; max-width: 76%; }
.panel-title p { margin: 0 0 16px; padding-left: 12px; border-left: 1px solid var(--accent); color: rgba(255,255,255,.68); font: 700 7px/1.5 var(--condensed); letter-spacing: .2em; }
.panel-title h3 { margin: 0; font: 500 clamp(30px, 4vw, 58px)/1.04 var(--serif); letter-spacing: -.02em; text-shadow: 0 3px 22px rgba(0,0,0,.35); }
.panel-title small { display: block; margin: 10px 0 0 3px; color: var(--accent); font: italic 400 clamp(12px, 1vw, 17px)/1.2 var(--display); letter-spacing: .1em; }

.loading-mark { position: absolute; z-index: 8; right: var(--pad); bottom: 9%; width: 18px; height: 18px; border: 1px solid rgba(255,255,255,.18); border-top-color: rgba(255,255,255,.8); border-radius: 50%; opacity: 0; pointer-events: none; }
.is-loading .loading-mark { opacity: 1; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

footer { min-height: 44svh; display: grid; grid-template-columns: 1fr auto; align-content: end; gap: 18px 8vw; padding: 12vh var(--pad) 7vh; border-top: 1px solid rgba(255,255,255,.12); color: #dad7d0; }
footer div { display: grid; gap: 7px; font: 500 10px/1.3 var(--condensed); letter-spacing: .18em; }
footer a { align-self: end; font: italic 400 clamp(18px, 2vw, 28px)/1 var(--display); }
footer small { grid-column: 1 / -1; color: var(--muted); font: 600 7px/1 var(--condensed); letter-spacing: .2em; }
.noscript { position: fixed; z-index: 100; inset: auto 20px 20px; margin: 0; padding: 12px 16px; background: #fff; color: #111; font-size: 12px; }

@media (max-width: 760px) {
  :root { --pad: 22px; --header-h: 82px; }
  #site-header { height: var(--header-h); }
  #site-header.is-scrolled { height: 66px; }
  .menu-toggle { z-index: 2; display: block; }
  .site-nav { position: fixed; inset: 0; display: grid; align-content: center; justify-items: start; gap: 28px; padding: 18vh var(--pad); background: rgba(7,7,7,.97); opacity: 0; visibility: hidden; transform: translateY(-12px); transition: opacity .3s ease, transform .3s ease, visibility .3s; }
  .site-nav a { display: flex; align-items: baseline; gap: 14px; font: 400 30px/1 var(--serif); }
  .site-nav a small { font-size: 8px; }
  .nav-open .site-nav { opacity: 1; visibility: visible; transform: none; }
  .nav-open .menu-toggle span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav-open .menu-toggle span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .site-mark small { display: none; }
  .site-mark span { font-size: 0; }
  .site-mark span::before { content: "ZR"; color: rgba(240,238,232,.76); font: 400 16px/1 var(--brand); letter-spacing: .01em; }
  .hero-stage { min-height: 100svh; }
  .hero-stage::after, .hero-stage:hover::after { inset: 8px; border-color: transparent; }
  .hero-identity { bottom: 26vh; }
  .hero-identity h1 { font-size: clamp(34px, 8.5vw, 40px); }
  .hero-project { left: var(--pad); right: auto; bottom: 28px; width: calc(100% - var(--pad) * 2); min-width: 0; }
  .collection-title { min-height: 20svh; grid-template-columns: auto 1fr; padding-top: calc(var(--header-h) + 3vh); }
  .collection-title small { grid-column: 2; }
  .flow-panel { height: 72svh; min-height: 520px; }
  .panel-index { top: 14%; transform: none; }
  .panel-title { left: var(--pad); bottom: 8%; max-width: calc(100% - var(--pad) * 2); }
  .panel-title h3 { font-size: clamp(31px, 9vw, 44px); }
  .panel-title p { max-width: 86vw; }
  .loading-mark { bottom: 8%; }
  footer { grid-template-columns: 1fr; min-height: 38svh; }
  footer a { justify-self: start; }
  footer small { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}