:root {
  --red-950: oklch(0.17 0.06 25);
  --red-900: oklch(0.23 0.08 25);
  --red-800: oklch(0.31 0.1 25);
  --red-600: oklch(0.5 0.16 28);
  --gold: oklch(0.79 0.13 78);
  --gold-soft: oklch(0.88 0.09 82);
  --paper: oklch(0.94 0.045 84);
  --paper-light: oklch(0.985 0.018 88);
  --ink: oklch(0.22 0.03 35);
  --ink-soft: oklch(0.42 0.025 35);
  --line-red: color-mix(in oklch, var(--red-600) 22%, transparent);
  --line-gold: color-mix(in oklch, var(--gold) 35%, transparent);
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  --mono: "Cascadia Mono", "Consolas", monospace;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; color: var(--paper-light); background: var(--red-950); font-family: var(--sans); line-height: 1.7; }
body::selection { color: var(--red-950); background: var(--gold); }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; }

body.guobo-intro-active { height: 100svh; overflow: hidden; }
.topbar, .hero-inner, .hero-seal { transition: opacity 560ms ease, transform 720ms cubic-bezier(.2, .8, .2, 1); }
body.guobo-intro-active .topbar { opacity: 0; transform: translateY(-14px); pointer-events: none; }
body.guobo-intro-active .hero-inner { opacity: 0; transform: translateY(20px); }
body.guobo-intro-active .hero-seal { opacity: 0; transform: translateY(14px) scale(.96); }
html.guobo-intro-live .topbar { opacity: 0; transform: translateY(-14px); pointer-events: none; }
html.guobo-intro-complete .topbar, html.guobo-intro-complete .hero-inner, html.guobo-intro-complete .hero-seal { opacity: 1; transform: none; }

.opening-screen {
  position: fixed;
  z-index: 50;
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  isolation: isolate;
  color: var(--paper-light);
  background: var(--red-950);
  opacity: 1;
  visibility: visible;
  transition: opacity 680ms ease 540ms, visibility 0s linear 1.22s;
}
.opening-screen.is-leaving { opacity: 0; visibility: hidden; pointer-events: none; }
.opening-glow { position: absolute; z-index: 0; inset: -24%; background: radial-gradient(circle at 50% 45%, color-mix(in oklch, var(--red-600) 32%, transparent), transparent 24%), radial-gradient(circle at 50% 50%, color-mix(in oklch, var(--gold) 12%, transparent), transparent 48%); opacity: .8; animation: opening-glow 4.2s ease-in-out infinite alternate; }
.opening-panel { position: absolute; z-index: 1; top: 0; bottom: 0; width: 50%; background: linear-gradient(110deg, rgba(22, 4, 5, .98), color-mix(in oklch, var(--red-900) 92%, black)); transition: transform 920ms cubic-bezier(.76, 0, .24, 1); }
.opening-panel-left { left: 0; transform-origin: left center; border-right: 1px solid color-mix(in oklch, var(--gold) 46%, transparent); }
.opening-panel-right { right: 0; transform-origin: right center; background: linear-gradient(250deg, rgba(22, 4, 5, .98), color-mix(in oklch, var(--red-900) 92%, black)); border-left: 1px solid color-mix(in oklch, var(--gold) 46%, transparent); }
.opening-screen.is-leaving .opening-panel-left { transform: translateX(-100%); }
.opening-screen.is-leaving .opening-panel-right { transform: translateX(100%); }
.opening-frame { position: absolute; z-index: 2; inset: clamp(1rem, 3vw, 2.8rem); border: 1px solid color-mix(in oklch, var(--gold) 38%, transparent); pointer-events: none; }
.opening-frame::before, .opening-frame::after { position: absolute; display: block; background: color-mix(in oklch, var(--gold) 64%, transparent); content: ""; }
.opening-frame::before { top: 50%; right: -2.5rem; left: -2.5rem; height: 1px; transform: scaleX(0); transform-origin: center; animation: opening-rule-in 1100ms 420ms cubic-bezier(.2, .8, .2, 1) forwards; }
.opening-frame::after { top: -2.5rem; bottom: -2.5rem; left: 50%; width: 1px; transform: scaleY(0); transform-origin: center; animation: opening-rule-in 1100ms 540ms cubic-bezier(.2, .8, .2, 1) forwards; }
.opening-center { position: relative; z-index: 4; display: flex; flex-direction: column; align-items: center; width: min(720px, calc(100% - 2rem)); text-align: center; animation: opening-center-in 1150ms cubic-bezier(.2, .8, .2, 1) both; }
.opening-screen.is-leaving .opening-center { opacity: 0; transform: translateY(-26px) scale(.97); transition: opacity 360ms ease, transform 520ms ease; }
.opening-seal { position: relative; display: grid; width: clamp(5rem, 10vw, 7rem); height: clamp(5rem, 10vw, 7rem); place-items: center; margin-bottom: 1.55rem; border: 1px solid var(--red-950); border-radius: 50%; color: var(--red-950); background: var(--gold); box-shadow: inset 0 0 0 5px color-mix(in oklch, var(--red-950) 24%, transparent), 0 0 0 1px color-mix(in oklch, var(--gold) 60%, transparent), 0 0 52px color-mix(in oklch, var(--gold) 18%, transparent); animation: opening-seal-in 1050ms 80ms cubic-bezier(.2, .85, .2, 1) both; }
.opening-seal::before { position: absolute; inset: -.8rem; border: 1px solid color-mix(in oklch, var(--gold) 58%, transparent); border-radius: 50%; content: ""; animation: opening-orbit 7s linear infinite; }
.opening-seal span { font-family: var(--serif); font-size: clamp(2.25rem, 5vw, 3.5rem); line-height: 1; }
.opening-seal i { position: absolute; right: -.2rem; bottom: .35rem; width: 1.4rem; height: 1.4rem; border: 1px solid var(--red-950); border-radius: 50%; background: var(--gold); }
.opening-kicker, .opening-english, .opening-subtitle, .opening-meta { font-family: var(--mono); }
.opening-kicker { margin: 0 0 .45rem; color: var(--gold); font-size: .64rem; letter-spacing: .22em; }
.opening-english { margin: 0; color: color-mix(in oklch, var(--paper-light) 62%, transparent); font-size: .57rem; letter-spacing: .28em; }
.opening-center h1 { margin: 1.1rem 0 .95rem; color: var(--paper-light); font-family: var(--serif); font-size: clamp(3.8rem, 9vw, 7.8rem); font-weight: 500; letter-spacing: -.1em; line-height: .98; }
.opening-center h1 em { color: var(--gold); font-style: normal; }
.opening-subtitle { margin: 0; color: color-mix(in oklch, var(--paper-light) 66%, transparent); font-size: .7rem; letter-spacing: .12em; }
.opening-meta { position: absolute; z-index: 4; right: clamp(1.8rem, 6vw, 6rem); bottom: clamp(1.8rem, 6vh, 4rem); left: clamp(1.8rem, 6vw, 6rem); display: flex; justify-content: space-between; align-items: end; gap: 1rem; color: color-mix(in oklch, var(--paper-light) 48%, transparent); font-size: .57rem; letter-spacing: .13em; animation: opening-meta-in 900ms 560ms ease both; }
.opening-screen.is-leaving .opening-meta { opacity: 0; transform: translateY(12px); transition: opacity 240ms ease, transform 320ms ease; }
.opening-meta button { padding: .32rem 0; border: 0; border-bottom: 1px solid color-mix(in oklch, var(--gold) 58%, transparent); color: var(--gold-soft); background: transparent; cursor: pointer; font: inherit; letter-spacing: .1em; transition: color 180ms ease, border-color 180ms ease; }
.opening-meta button:hover, .opening-meta button:focus-visible { color: white; border-color: white; }
.opening-meta button span { margin-left: .35rem; font-size: .85rem; }

@keyframes opening-glow {
  from { transform: scale(.96); opacity: .62; }
  to { transform: scale(1.06); opacity: .92; }
}
@keyframes opening-center-in {
  from { opacity: 0; transform: translateY(34px); }
  to { opacity: 1; transform: none; }
}
@keyframes opening-seal-in {
  from { opacity: 0; transform: scale(.25) rotate(-18deg); }
  65% { opacity: 1; transform: scale(1.06) rotate(3deg); }
  to { transform: none; }
}
@keyframes opening-orbit { to { transform: rotate(360deg); } }
@keyframes opening-rule-in { to { transform: scale(1); } }
@keyframes opening-meta-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

.topbar {
  position: absolute;
  z-index: 5;
  top: 0;
  left: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 1.2rem clamp(1rem, 5vw, 4.8rem);
  border-bottom: 1px solid var(--line-gold);
}
.brand { display: inline-flex; align-items: center; gap: .7rem; }
.brand-mark, .footer-mark { display: grid; width: 2.7rem; height: 2.7rem; place-items: center; border: 1px solid var(--gold); border-radius: 50%; color: var(--red-950); background: var(--gold); font-family: var(--serif); font-size: 1.35rem; line-height: 1; box-shadow: inset 0 0 0 3px color-mix(in oklch, var(--red-950) 23%, transparent); }
.brand-copy { display: grid; line-height: 1.15; }
.brand-copy strong { font-family: var(--serif); font-size: .95rem; font-weight: 500; letter-spacing: .12em; }
.brand-copy small, .eyebrow, .image-boundary, .dialog-kicker, .object-count { font-family: var(--mono); font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; }
.brand-copy small { margin-top: .18rem; color: color-mix(in oklch, var(--gold-soft) 65%, transparent); }
.official-button { display: inline-flex; align-items: center; gap: .9rem; min-height: 42px; padding: .55rem .9rem; border: 1px solid var(--gold); color: var(--red-950); background: var(--gold); font-size: .72rem; letter-spacing: .08em; transition: transform 180ms ease, background 180ms ease; }
.official-button:hover, .official-button:focus-visible { transform: translateY(-2px); background: var(--gold-soft); }
.official-button span, .dialog-source span { font-size: 1rem; }

.hero { position: relative; min-height: min(790px, 100svh); display: flex; align-items: center; isolation: isolate; overflow: hidden; background: var(--red-950) url("assets/generated/hero-lacquer-gold.png") center / cover no-repeat; }
.hero-overlay { position: absolute; z-index: -1; inset: 0; background: linear-gradient(90deg, rgba(31, 7, 7, .36) 0%, rgba(31, 7, 7, .12) 50%, rgba(31, 7, 7, .28) 100%); }
.hero::after { content: ""; position: absolute; z-index: -1; right: -8vw; bottom: -17vw; width: 39vw; height: 39vw; border: 1px solid color-mix(in oklch, var(--gold) 45%, transparent); border-radius: 50%; opacity: .35; }
.hero-inner { width: min(660px, calc(100% - 2rem)); margin: 4.5rem 0 0 clamp(1rem, 10vw, 9.7rem); }
.eyebrow { display: flex; align-items: center; gap: .7rem; margin: 0; color: var(--gold); }
.eyebrow span { display: inline-block; width: 2.8rem; height: 1px; background: currentColor; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.15; }
h1 { margin: 1.35rem 0 1.3rem; font-size: clamp(4rem, 9vw, 8rem); letter-spacing: -.09em; }
h1 em { color: var(--gold); font-style: normal; }
.hero-intro { width: 100%; max-width: 570px; margin-bottom: 1.6rem; color: color-mix(in oklch, var(--paper-light) 82%, transparent); font-family: var(--serif); font-size: clamp(1rem, 1.8vw, 1.22rem); line-height: 1.95; text-indent: 2em; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
.official-button-large { min-height: 48px; padding-inline: 1.05rem; }
.jump-link { padding-bottom: .15rem; border-bottom: 1px solid color-mix(in oklch, var(--gold) 70%, transparent); color: var(--gold-soft); font-size: .74rem; letter-spacing: .08em; transition: color 180ms ease, border-color 180ms ease; }
.jump-link:hover, .jump-link:focus-visible { color: white; border-color: white; }
.image-boundary { margin: 2.4rem 0 0; color: color-mix(in oklch, var(--paper-light) 58%, transparent); }
.hero-seal { position: absolute; right: clamp(1rem, 5vw, 5rem); bottom: clamp(4rem, 11vh, 7rem); display: flex; flex-direction: column; gap: .1rem; color: color-mix(in oklch, var(--gold) 86%, transparent); font-family: var(--serif); font-size: 1.35rem; line-height: 1; }
.hero-seal i { display: block; width: 2.1rem; height: 2.1rem; margin-top: .55rem; border: 1px solid var(--gold); border-radius: 50%; }

.objects-section { padding: clamp(4.5rem, 9vw, 8rem) max(1rem, calc((100vw - var(--max)) / 2)); color: var(--ink); background: var(--paper); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 2rem; padding-bottom: 2.4rem; border-bottom: 1px solid var(--line-red); }
.eyebrow-dark { color: var(--red-600); }
.section-head h2 { margin: .85rem 0 .5rem; color: var(--ink); font-size: clamp(2.7rem, 5.5vw, 5.5rem); letter-spacing: -.08em; }
.section-lede { margin: 0; color: var(--ink-soft); font-family: var(--serif); font-size: 1rem; }
.object-count { margin: 0; padding-bottom: .35rem; color: var(--red-600); white-space: nowrap; }
.object-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; padding-top: 2.2rem; }
.object-card { position: relative; display: grid; grid-template-rows: auto auto; padding: 0; overflow: hidden; border: 1px solid color-mix(in oklch, var(--red-600) 22%, transparent); color: var(--ink); background: var(--paper-light); text-align: left; cursor: pointer; transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease; }
.object-card:hover, .object-card:focus-visible { transform: translateY(-4px); border-color: color-mix(in oklch, var(--red-600) 58%, transparent); box-shadow: 0 14px 32px rgba(50, 15, 10, .14); }
.object-card:focus-visible { outline: 2px solid var(--red-600); outline-offset: 3px; }
.object-image { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: #2a1110; }
.object-image::after { content: "查看介绍  ↗"; position: absolute; inset: auto .8rem .8rem auto; padding: .35rem .55rem; color: var(--paper-light); background: rgba(35, 9, 8, .76); font-family: var(--mono); font-size: .58rem; letter-spacing: .08em; opacity: 0; transform: translateY(5px); transition: opacity 180ms ease, transform 180ms ease; }
.object-card:hover .object-image::after, .object-card:focus-visible .object-image::after { opacity: 1; transform: none; }
.object-image img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.78) contrast(1.04); transition: transform 450ms cubic-bezier(.2, .75, .2, 1); }
.object-card:hover .object-image img, .object-card:focus-visible .object-image img { transform: scale(1.045); }
.object-caption { display: flex; justify-content: space-between; align-items: start; gap: 1rem; padding: .95rem 1rem 1.05rem; }
.object-caption h3 { margin: 0; font-size: 1.25rem; letter-spacing: -.035em; }
.object-caption small { flex: 0 0 auto; color: var(--red-600); font-family: var(--mono); font-size: .58rem; letter-spacing: .08em; text-align: right; }
.card-index { position: absolute; z-index: 1; top: .7rem; left: .7rem; display: grid; width: 1.7rem; height: 1.7rem; place-items: center; color: var(--paper-light); background: var(--red-900); font-family: var(--mono); font-size: .58rem; }

.footer { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.2rem max(1rem, calc((100vw - var(--max)) / 2)); color: color-mix(in oklch, var(--paper-light) 64%, transparent); background: var(--red-950); border-top: 1px solid var(--line-gold); font-size: .7rem; }
.footer > div { display: inline-flex; align-items: center; gap: .6rem; color: var(--gold-soft); font-family: var(--serif); }
.footer-mark { width: 2rem; height: 2rem; font-size: 1rem; }
.footer p { margin: 0; font-family: var(--mono); font-size: .58rem; letter-spacing: .06em; }

.object-dialog { display: grid; grid-template-columns: minmax(300px, .9fr) minmax(320px, 1.1fr); width: min(980px, calc(100vw - 2rem)); max-height: calc(100vh - 2rem); padding: 0; overflow: hidden; color: var(--paper-light); background: var(--red-950); border: 1px solid var(--gold); }
.object-dialog:not([open]) { display: none; }
.object-dialog::backdrop { background: rgba(15, 4, 4, .82); backdrop-filter: blur(8px); }
.dialog-close { position: absolute; z-index: 2; top: .8rem; right: .85rem; display: grid; width: 2.2rem; height: 2.2rem; place-items: center; border: 1px solid var(--gold); color: var(--gold); background: rgba(23, 6, 6, .74); cursor: pointer; font-size: 1.3rem; line-height: 1; }
.dialog-image-wrap { min-height: 350px; background: #120505; }
.dialog-image-wrap img { width: 100%; height: 100%; max-height: 78vh; object-fit: cover; }
.dialog-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(1.4rem, 4vw, 3rem); }
.dialog-kicker { margin-bottom: .75rem; color: var(--gold); }
.dialog-copy h2 { margin: 0 0 .9rem; color: var(--gold-soft); font-size: clamp(2rem, 4vw, 3.6rem); letter-spacing: -.07em; }
.dialog-description { margin-bottom: 1.1rem; color: color-mix(in oklch, var(--paper-light) 78%, transparent); font-family: var(--serif); font-size: .98rem; line-height: 2; text-indent: 2em; }
.dialog-tags { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: 1.25rem; }
.dialog-tags span { padding: .22rem .48rem; border: 1px solid color-mix(in oklch, var(--gold) 46%, transparent); color: var(--gold-soft); font-family: var(--mono); font-size: .6rem; letter-spacing: .08em; }
.dialog-boundary { margin-bottom: 1.2rem; color: color-mix(in oklch, var(--paper-light) 53%, transparent); font-family: var(--mono); font-size: .6rem; line-height: 1.7; }
.dialog-source { align-self: flex-start; padding-bottom: .22rem; border-bottom: 1px solid var(--gold); color: var(--gold); font-size: .7rem; letter-spacing: .08em; }

@media (max-width: 900px) {
  .object-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .object-dialog { grid-template-columns: 1fr; max-height: calc(100vh - 1rem); overflow-y: auto; }
  .dialog-image-wrap { min-height: 260px; max-height: 44vh; }
  .dialog-image-wrap img { max-height: 44vh; }
}

@media (max-width: 600px) {
  .opening-frame { inset: .8rem; }
  .opening-center { width: calc(100% - 2rem); }
  .opening-center h1 { margin: .9rem 0 .8rem; font-size: clamp(3.2rem, 17vw, 5rem); }
  .opening-kicker { font-size: .52rem; letter-spacing: .15em; }
  .opening-english { font-size: .46rem; letter-spacing: .18em; }
  .opening-subtitle { max-width: 18rem; font-size: .56rem; line-height: 1.7; }
  .opening-meta { right: 1.5rem; bottom: 1.5rem; left: 1.5rem; align-items: flex-start; flex-direction: column; gap: .75rem; font-size: .5rem; }
  .topbar { position: absolute; padding: .9rem 1rem; }
  .topbar > .official-button { display: none; }
  .brand-mark { width: 2.35rem; height: 2.35rem; font-size: 1.15rem; }
  .brand-copy strong { font-size: .76rem; letter-spacing: .08em; }
  .brand-copy small { font-size: .5rem; }
  .official-button { min-height: 38px; padding: .4rem .55rem; font-size: .58rem; }
  .hero { min-height: 700px; background-position: 62% center; }
  .hero-inner { width: calc(100% - 2rem); margin: 4rem 1rem 0; }
  .eyebrow { font-size: .52rem; letter-spacing: .06em; }
  .eyebrow span { width: 1.8rem; }
  h1 { margin-top: 1rem; font-size: clamp(3.4rem, 17vw, 5rem); }
  .hero-intro { max-width: 350px; font-size: .88rem; line-height: 1.85; overflow-wrap: anywhere; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: .8rem; }
  .official-button-large { font-size: .67rem; }
  .hero-seal { right: 1rem; bottom: 4.5rem; font-size: 1rem; }
  .image-boundary { margin-top: 1.8rem; font-size: .52rem; }
  .section-head { align-items: start; flex-direction: column; gap: 1rem; padding-bottom: 1.6rem; }
  .section-head h2 { width: 100%; max-width: 100%; margin-top: .65rem; font-size: clamp(2.15rem, 9.5vw, 2.75rem); letter-spacing: -.06em; overflow-wrap: anywhere; word-break: break-all; }
  .section-lede { font-size: .88rem; }
  .object-count { padding: .4rem .55rem; border: 1px solid var(--line-red); }
  .object-grid { grid-template-columns: 1fr; gap: .8rem; padding-top: 1.5rem; }
  .object-caption h3 { font-size: 1.1rem; }
  .object-image::after { opacity: 1; transform: none; font-size: .52rem; }
  .footer { align-items: flex-start; flex-direction: column; }
  .dialog-copy { padding: 1.2rem 1.15rem 1.4rem; }
  .dialog-copy h2 { font-size: 2.3rem; }
  .dialog-description { font-size: .88rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
  .opening-screen, .opening-screen * { animation: none !important; transition: none !important; }
  .opening-screen.is-leaving { opacity: 0; visibility: hidden; }
  body.guobo-intro-active .topbar, body.guobo-intro-active .hero-inner, body.guobo-intro-active .hero-seal { opacity: 1; transform: none; }
}