:root {
  --ink: #201a17;
  --muted: #746b64;
  --paper: #fffaf3;
  --warm: #efe4d7;
  --red: #b52229;
  --red-dark: #8f151b;
  --line: rgba(32, 26, 23, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-header {
  width: min(1180px, calc(100% - 48px));
  min-height: 92px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand-mark {
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}
.brand-name strong, .brand-name small { display: block; }
.brand-name strong { font-size: 16px; letter-spacing: .05em; }
.brand-name small { margin-top: 4px; color: var(--muted); font-size: 11px; }
.header-contact { flex: 0 0 auto; padding-bottom: 3px; border-bottom: 1px solid currentColor; font-size: 13px; font-weight: 750; }

.hero {
  width: min(1180px, calc(100% - 48px));
  min-height: 690px;
  margin: 0 auto;
  padding: 76px 0 84px;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 84px;
  align-items: center;
}
.eyebrow { margin: 0 0 20px; color: var(--red); font-size: 12px; font-weight: 800; letter-spacing: .18em; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 18px; font: 500 clamp(49px, 5.7vw, 78px)/1.08 Georgia, "Songti SC", serif; letter-spacing: -.045em; }
h1 span { color: var(--red); }
.hero-en { margin-bottom: 14px; color: var(--red); font: 500 20px/1.45 Georgia, serif; }
.hero-intro { max-width: 560px; margin-bottom: 30px; color: var(--muted); font-size: 16px; line-height: 1.75; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.button { min-height: 52px; padding: 0 23px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; border: 1px solid var(--ink); font-size: 14px; font-weight: 750; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { border-color: var(--red); background: var(--red); color: #fff; }
.button-primary:hover { background: var(--red-dark); }
.file-note { margin: 15px 0 0; color: var(--muted); font-size: 12px; }
.cover-wrap { position: relative; width: min(390px, 88%); justify-self: center; }
.cover-shadow { position: absolute; inset: 8% -10% -3% 7%; background: #decab0; transform: rotate(5deg); }
.catalogue-cover { position: relative; width: 100%; border: 9px solid #fff; box-shadow: 0 30px 80px rgba(57, 34, 21, .22); }
.cover-card {
  aspect-ratio: 990 / 1400;
  padding: 42px 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(155deg, #cf3136 0%, #a8151c 58%, #790e14 100%);
  color: #fff;
  text-align: center;
}
.cover-card::before { content: ""; position: absolute; inset: 5%; border: 1px solid rgba(255, 255, 255, .35); }
.cover-card img { position: relative; width: 92px; height: 92px; margin-bottom: 28px; border-radius: 50%; }
.cover-card p { position: relative; margin-bottom: 28px; font-size: 17px; font-weight: 750; letter-spacing: .06em; }
.cover-card strong { position: relative; font: 500 84px/1 Georgia, serif; letter-spacing: -.05em; }
.cover-card span { position: relative; margin-top: 10px; font-size: 12px; font-weight: 750; letter-spacing: .22em; }
.cover-badge { position: absolute; right: -42px; bottom: 44px; width: 92px; height: 92px; display: flex; flex-direction: column; align-items: center; justify-content: center; border-radius: 50%; background: var(--red); color: #fff; box-shadow: 0 14px 32px rgba(118, 15, 21, .26); }
.cover-badge b { font: 500 20px/1.1 Georgia, serif; }
.cover-badge span { margin-top: 3px; font-size: 8px; letter-spacing: .11em; }

.catalogue-strip { min-height: 78px; padding: 20px max(24px, calc((100vw - 1180px) / 2)); display: flex; justify-content: space-between; align-items: center; gap: 32px; overflow-x: auto; background: var(--ink); color: #fff; font-size: 11px; font-weight: 750; letter-spacing: .14em; white-space: nowrap; }
.contact-section { padding: 104px max(24px, calc((100vw - 1180px) / 2)); background: var(--warm); }
.section-heading { max-width: 700px; margin-bottom: 45px; }
.section-heading h2, .share-section h2 { margin-bottom: 14px; font: 500 clamp(42px, 5vw, 68px)/1.08 Georgia, "Songti SC", serif; letter-spacing: -.04em; }
.section-heading > p:last-child, .share-section > div > p { color: var(--muted); font-size: 16px; line-height: 1.7; }
.contact-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px; }
.contact-card { background: var(--paper); border: 1px solid rgba(31, 27, 24, .08); }
.details-card { padding: 40px; }
.person-row { padding-bottom: 28px; display: flex; justify-content: space-between; align-items: start; border-bottom: 1px solid var(--line); }
.label { margin-bottom: 10px; color: var(--red); font-size: 10px; font-weight: 800; letter-spacing: .18em; }
.person-row h3, .wechat-card h3 { margin: 0 0 4px; font: 500 34px/1.15 Georgia, "Songti SC", serif; }
.person-row h3 span { margin-left: 10px; color: var(--muted); font-size: 18px; }
.availability { display: inline-flex; align-items: center; gap: 7px; padding: 8px 11px; background: #e6efdf; color: #3d5b31; font-size: 11px; font-weight: 700; }
.availability i { width: 7px; height: 7px; border-radius: 50%; background: #5d8c48; }
.contact-links { margin-top: 12px; }
.contact-links a { min-height: 76px; display: grid; grid-template-columns: 40px 1fr auto; align-items: center; gap: 14px; border-bottom: 1px solid var(--line); }
.contact-links a:last-child { border-bottom: 0; }
.contact-links a:hover strong { color: var(--red); }
.contact-icon { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--red); font-size: 10px; font-weight: 800; }
.contact-links small, .contact-links strong { display: block; }
.contact-links small { margin-bottom: 4px; color: var(--muted); font-size: 10px; letter-spacing: .08em; }
.contact-links strong { font-size: 16px; overflow-wrap: anywhere; }
.contact-links b { color: var(--red); font-size: 28px; font-weight: 300; }
.wechat-card { padding: 38px; display: grid; grid-template-columns: 1fr 250px; column-gap: 22px; align-items: center; }
.wechat-card > div { align-self: start; }
.wechat-card > div p:last-child { color: var(--muted); font-size: 13px; line-height: 1.6; }
.wechat-qr-frame { position: relative; width: 250px; height: 250px; grid-row: 1 / span 2; grid-column: 2; overflow: hidden; background: #fff; border: 10px solid #fff; box-shadow: 0 14px 40px rgba(62, 36, 19, .13); }
.wechat-qr-frame img { position: absolute; width: 1135px; max-width: none; left: -180px; top: -413px; }
.wechat-tip { align-self: end; margin-top: 14px; color: var(--red); font-size: 11px; text-decoration: underline; text-underline-offset: 3px; }

.share-section { width: min(1180px, calc(100% - 48px)); margin: 0 auto; padding: 100px 0; display: grid; grid-template-columns: 1fr auto; gap: 80px; align-items: center; }
.share-section > div:first-child { max-width: 650px; }
.text-link { display: inline-block; margin-top: 18px; padding-bottom: 3px; color: var(--red); border-bottom: 1px solid var(--red); font-size: 14px; font-weight: 750; }
.catalogue-qr-wrap { padding: 18px 18px 14px; background: #fff; border: 1px solid var(--line); box-shadow: 0 20px 55px rgba(62, 36, 19, .12); }
.catalogue-qr-wrap img { width: 220px; height: 220px; }
.catalogue-qr-wrap span { display: block; margin-top: 9px; text-align: center; color: var(--muted); font-size: 9px; font-weight: 800; letter-spacing: .2em; }

footer { padding: 50px max(24px, calc((100vw - 1180px) / 2)); display: grid; grid-template-columns: 1fr 1.5fr auto; gap: 48px; align-items: end; background: var(--red-dark); color: #fff; font-size: 12px; line-height: 1.7; }
footer strong, footer span { display: block; }
footer span, footer address { margin-top: 4px; color: rgba(255, 255, 255, .72); font-style: normal; }
footer a { border-bottom: 1px solid rgba(255, 255, 255, .55); }

@media (max-width: 900px) {
  .hero { min-height: auto; grid-template-columns: 1fr .75fr; gap: 42px; padding: 68px 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .wechat-card { min-height: 340px; }
  footer { grid-template-columns: 1fr 1fr; }
  footer > a { grid-column: 1 / -1; width: max-content; }
}

@media (max-width: 650px) {
  .site-header { width: calc(100% - 32px); min-height: 76px; }
  .brand-name small { display: none; }
  .brand-name strong { font-size: 13px; }
  .brand-mark { flex-basis: 40px; width: 40px; height: 40px; }
  .header-contact { font-size: 11px; }
  .hero { width: calc(100% - 36px); grid-template-columns: 1fr; gap: 58px; padding: 52px 0 70px; }
  h1 { font-size: clamp(43px, 13vw, 60px); }
  .hero-en { font-size: 17px; }
  .hero-intro { font-size: 15px; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .cover-wrap { width: min(300px, 78%); }
  .cover-badge { right: -36px; width: 78px; height: 78px; }
  .catalogue-strip { justify-content: flex-start; gap: 44px; }
  .contact-section { padding: 72px 18px; }
  .section-heading h2, .share-section h2 { font-size: 43px; }
  .details-card { padding: 25px 20px; }
  .availability { display: none; }
  .person-row h3 span { display: block; margin: 6px 0 0; }
  .contact-links strong { font-size: 14px; }
  .wechat-card { min-height: 0; padding: 28px 20px; display: flex; flex-direction: column; align-items: center; text-align: center; }
  .wechat-card > div { align-self: center; }
  .wechat-qr-frame { width: 250px; height: 250px; max-width: 100%; margin-top: 22px; }
  .share-section { width: calc(100% - 36px); padding: 72px 0; grid-template-columns: 1fr; gap: 38px; }
  .catalogue-qr-wrap { justify-self: center; }
  footer { grid-template-columns: 1fr; gap: 24px; padding: 40px 22px; }
  footer > a { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}

/* Exhibition display page — optimized for a 16:9 full-screen monitor. */
.display-page { min-height: 100vh; overflow: hidden; background: #95161c; color: #fff; }
.display-poster { min-height: 100vh; padding: clamp(28px, 4vh, 62px) clamp(34px, 5vw, 96px); display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(360px, .75fr); gap: clamp(40px, 6vw, 120px); align-items: center; background: radial-gradient(circle at 12% 8%, rgba(255,255,255,.16), transparent 28%), linear-gradient(135deg, #be252c, #8b1017 70%); }
.display-copy { min-width: 0; }
.display-brand { display: flex; align-items: center; gap: clamp(16px, 2vw, 30px); margin-bottom: clamp(30px, 6vh, 80px); }
.display-brand img { width: clamp(76px, 7vw, 126px); height: clamp(76px, 7vw, 126px); border-radius: 50%; box-shadow: 0 16px 35px rgba(70, 0, 5, .22); }
.display-brand strong, .display-brand span, .display-brand small { display: block; }
.display-brand strong { font-size: clamp(22px, 2.1vw, 41px); letter-spacing: .02em; }
.display-brand span { margin-top: 7px; color: rgba(255,255,255,.78); font-size: clamp(13px, 1.08vw, 21px); }
.display-brand small { margin-top: 5px; color: rgba(255,255,255,.5); font-size: clamp(9px, .68vw, 13px); letter-spacing: .08em; }
.display-year { margin: 0; font: 500 clamp(96px, 14vw, 250px)/.72 Georgia, serif; letter-spacing: -.07em; }
.display-title { margin: clamp(28px, 4vh, 52px) 0 12px; font: 600 clamp(35px, 3.75vw, 70px)/1.04 Georgia, serif; letter-spacing: -.025em; }
.display-id-title { margin-bottom: 7px; color: rgba(255,255,255,.9); font-size: clamp(19px, 1.62vw, 30px); font-weight: 650; }
.display-cn { margin-bottom: 22px; color: rgba(255,255,255,.52); font-size: clamp(10px, .78vw, 15px); letter-spacing: .1em; }
.display-subtitle { margin-bottom: clamp(28px, 4vh, 48px); color: rgba(255,255,255,.76); font-size: clamp(15px, 1.25vw, 24px); letter-spacing: .04em; line-height: 1.45; }
.display-subtitle span { font-size: .82em; }
.display-contacts { display: flex; flex-wrap: wrap; gap: 12px 26px; font-size: clamp(15px, 1.25vw, 23px); font-weight: 650; }
.display-contacts small { color: rgba(255,255,255,.5); font-size: .68em; }
.display-contacts a { padding-bottom: 2px; border-bottom: 1px solid rgba(255,255,255,.55); }
.display-address { margin-top: 24px; color: rgba(255,255,255,.68); font-size: clamp(12px, .95vw, 18px); line-height: 1.6; }
.display-address small { color: rgba(255,255,255,.46); font-size: .72em; letter-spacing: .05em; }
.display-qr-panel { justify-self: end; width: min(100%, 560px); padding: clamp(24px, 2.3vw, 42px); background: #fffaf3; color: var(--ink); text-align: center; box-shadow: 0 32px 80px rgba(55,0,4,.32); }
.display-qr-panel img { width: 100%; aspect-ratio: 1; }
.display-qr-panel h2 { margin: 24px 0 7px; font: 700 clamp(25px, 2.2vw, 40px)/1.2 Georgia, "Songti SC", serif; }
.display-qr-panel p { margin-bottom: 0; color: var(--muted); font-size: clamp(12px, 1vw, 18px); }
.display-qr-panel .qr-id { color: var(--red); font-weight: 800; letter-spacing: .035em; }
.display-qr-panel .qr-cn { margin-top: 8px; color: #988d84; font-size: clamp(9px, .66vw, 12px); letter-spacing: .16em; }
.display-qr-panel .display-url { margin-top: 13px; color: var(--red); font-weight: 800; overflow-wrap: anywhere; }
@media (max-aspect-ratio: 4 / 3) {
  .display-page { overflow: auto; }
  .display-poster { grid-template-columns: 1fr; text-align: center; }
  .display-brand { justify-content: center; margin-bottom: 38px; }
  .display-contacts { justify-content: center; }
  .display-qr-panel { justify-self: center; width: min(72vw, 500px); }
}