:root {
  color-scheme: light;
  --ink: #14110d;
  --muted: #6d665f;
  --paper: #f7f3eb;
  --surface: #fffaf1;
  --line: rgba(20, 17, 13, 0.12);
  --gold: #b88a38;
  --gold-dark: #70511f;
  --jade: #1f5d52;
  --wine: #792c2c;
  --shadow: 0 24px 70px rgba(39, 30, 18, 0.16);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 14px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.32);
  background: rgba(247, 243, 235, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(184, 138, 56, 0.5);
  background: #1a1712;
  color: #f5d58c;
  font-weight: 800;
}

.logo-mark {
  overflow: hidden;
  border-color: rgba(184, 138, 56, 0.32);
  background: #fffaf1;
}

.logo-mark img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.brand strong {
  display: block;
  font-size: 18px;
  line-height: 1.1;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: #3f3931;
  font-size: 15px;
}

.site-nav a {
  position: relative;
  padding: 8px 0;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--gold);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: rgba(255, 250, 241, 0.72);
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.hero {
  position: relative;
  display: grid;
  min-height: calc(100vh - 72px);
  align-items: end;
  overflow: hidden;
  background: #17130f;
  color: #fff8e8;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media::after {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 8, 5, 0.88), rgba(10, 8, 5, 0.48), rgba(10, 8, 5, 0.16)),
    linear-gradient(0deg, rgba(10, 8, 5, 0.88), rgba(10, 8, 5, 0.12) 55%);
  content: "";
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, calc(100% - 36px));
  padding: 80px clamp(18px, 5vw, 72px) 96px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: "SimSun", "Songti SC", serif;
  font-size: clamp(64px, 10vw, 132px);
  line-height: 0.96;
  font-weight: 700;
}

.lead {
  max-width: 620px;
  margin: 24px 0 0;
  color: rgba(255, 248, 232, 0.82);
  font-size: clamp(17px, 2.3vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid rgba(255, 248, 232, 0.28);
  font-weight: 700;
}

.button.primary {
  border-color: var(--gold);
  background: var(--gold);
  color: #1b1308;
}

.button.secondary {
  color: #fff8e8;
}

.hero-panel {
  position: absolute;
  right: clamp(18px, 5vw, 72px);
  bottom: 46px;
  z-index: 1;
  display: grid;
  min-width: 210px;
  gap: 4px;
  padding: 20px 22px;
  border: 1px solid rgba(255, 248, 232, 0.22);
  background: rgba(20, 17, 13, 0.72);
  backdrop-filter: blur(18px);
}

.hero-panel span,
.hero-panel small {
  color: rgba(255, 248, 232, 0.68);
}

.hero-panel strong {
  color: #f5d58c;
  font-size: 32px;
  line-height: 1.1;
}

.notice {
  display: flex;
  gap: 18px;
  align-items: center;
  padding: 18px clamp(18px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  background: #17130f;
  color: rgba(255, 248, 232, 0.84);
}

.notice span {
  flex: none;
  padding: 3px 10px;
  background: var(--wine);
  color: #fff;
  font-weight: 700;
}

.notice p {
  margin: 0;
}

.section {
  padding: clamp(64px, 9vw, 112px) clamp(18px, 5vw, 72px);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 36px;
}

.section-heading h2,
.document-card h2,
.contact-section h2 {
  margin: 0;
  font-family: "SimSun", "Songti SC", serif;
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.08;
}

.section-heading p:last-child,
.contact-section p {
  color: var(--muted);
  font-size: 17px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.service-grid article {
  min-height: 260px;
  padding: 28px;
  background: var(--surface);
}

.service-grid span {
  color: var(--gold-dark);
  font-weight: 800;
}

.service-grid h3,
.venue-grid h3 {
  margin: 48px 0 10px;
  font-size: 24px;
}

.service-grid p,
.venue-grid p,
.document-card p {
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(24px, 5vw, 58px);
  align-items: center;
  background: #fff;
}

.document-card {
  padding: clamp(26px, 5vw, 54px);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(184, 138, 56, 0.1), transparent 38%),
    var(--surface);
  box-shadow: var(--shadow);
}

.doc-kicker {
  color: var(--gold-dark);
  font-weight: 800;
}

.signature {
  margin-top: 34px;
  text-align: right;
  font-weight: 700;
}

.stats-card {
  overflow: hidden;
  border: 1px solid var(--line);
  background: #15110d;
  box-shadow: var(--shadow);
}

.stats-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  color: #fff8e8;
}

.stats-row span {
  padding: 20px;
  border-right: 1px solid rgba(255, 248, 232, 0.12);
}

.stats-row strong {
  display: block;
  color: #f5d58c;
  font-size: 26px;
}

.stats-row small {
  color: rgba(255, 248, 232, 0.62);
}

.dark-section {
  background: #17130f;
  color: #fff8e8;
}

.dark-section .section-heading p:last-child {
  color: rgba(255, 248, 232, 0.7);
}

.collection-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(2, 1fr);
  gap: 14px;
}

.collection-grid figure {
  position: relative;
  min-height: 280px;
  margin: 0;
  overflow: hidden;
  background: #050505;
}

.collection-grid .featured-item {
  grid-row: span 2;
}

.collection-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms ease;
}

.collection-grid figure:hover img {
  transform: scale(1.04);
}

.collection-grid figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 18px;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.78), transparent);
  color: #fff8e8;
}

.venues {
  background: var(--surface);
}

.venue-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.venue-grid article {
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 14px 34px rgba(39, 30, 18, 0.08);
}

.venue-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.venue-grid h3,
.venue-grid p {
  margin-right: 22px;
  margin-left: 22px;
}

.venue-grid p {
  margin-bottom: 24px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
  background: #fff;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line);
  background: var(--surface);
}

.contact-form label {
  display: grid;
  gap: 8px;
  font-weight: 700;
}

.contact-form input,
.contact-form select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font: inherit;
  padding: 0 14px;
}

.contact-form button {
  min-height: 50px;
  border: 0;
  background: var(--ink);
  color: #fff8e8;
  font: inherit;
  font-weight: 800;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 34px clamp(18px, 5vw, 72px) 84px;
  background: #17130f;
  color: rgba(255, 248, 232, 0.72);
}

.site-footer strong {
  color: #fff8e8;
}

.bottom-nav {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 24;
  display: none;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  background: rgba(255, 250, 241, 0.92);
  backdrop-filter: blur(18px);
}

.bottom-nav a {
  min-height: 58px;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.module {
  position: relative;
}

.hero-carousel {
  min-height: auto;
  background: #111;
}

.slides {
  position: relative;
  height: min(82vh, 760px);
  min-height: 430px;
  overflow: hidden;
}

.slide {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  transition: opacity 560ms ease;
}

.slide.is-active {
  opacity: 1;
}

.slide::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(12, 10, 8, 0.82), rgba(12, 10, 8, 0.15)), linear-gradient(0deg, rgba(12, 10, 8, 0.72), transparent 58%);
  content: "";
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slide figcaption {
  position: absolute;
  left: clamp(20px, 6vw, 80px);
  bottom: clamp(54px, 8vw, 96px);
  z-index: 2;
  display: grid;
  gap: 10px;
  color: #fff8e8;
}

.slide figcaption span {
  color: #f5d58c;
  font-weight: 800;
}

.slide figcaption strong {
  font-family: "SimSun", "Songti SC", serif;
  font-size: clamp(54px, 10vw, 118px);
  line-height: 0.95;
}

.slide-dots {
  position: absolute;
  right: clamp(20px, 5vw, 72px);
  bottom: 36px;
  z-index: 3;
  display: flex;
  gap: 9px;
}

.slide-dots button {
  width: 30px;
  height: 4px;
  border: 0;
  background: rgba(255, 248, 232, 0.36);
}

.slide-dots button.is-active {
  background: #f5d58c;
}

.entry-module {
  padding: clamp(22px, 4vw, 44px) clamp(18px, 5vw, 72px);
  background: #fff;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--line);
}

.entry-grid a {
  position: relative;
  display: grid;
  min-height: 190px;
  align-content: end;
  overflow: hidden;
  padding: 18px;
  color: #fff;
}

.entry-grid img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 360ms ease;
}

.entry-grid a::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.78), rgba(0, 0, 0, 0.06));
  content: "";
}

.entry-grid a:hover img {
  transform: scale(1.05);
}

.entry-grid strong,
.entry-grid span {
  position: relative;
  z-index: 1;
}

.entry-grid strong {
  font-size: 20px;
}

.entry-grid span {
  color: rgba(255, 248, 232, 0.76);
}

.auction-records {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  gap: clamp(24px, 6vw, 72px);
  align-items: center;
  padding: clamp(64px, 9vw, 112px) clamp(18px, 5vw, 72px);
  background: var(--paper);
}

.record-copy h1 {
  margin: 0;
  font-family: "SimSun", "Songti SC", serif;
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1.1;
}

.record-copy p:last-child {
  color: var(--muted);
}

.record-card {
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow);
}

.record-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.record-card dl {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0;
}

.record-card div {
  padding: 20px;
  border-right: 1px solid var(--line);
}

.record-card dt {
  color: var(--muted);
  font-size: 13px;
}

.record-card dd {
  margin: 6px 0 0;
  color: var(--gold-dark);
  font-size: 24px;
  font-weight: 900;
}

.text-image {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(24px, 5vw, 58px);
  align-items: center;
  padding: clamp(64px, 9vw, 112px) clamp(18px, 5vw, 72px);
  background: #fff;
}

.text-image h2 {
  margin: 0;
  font-family: "SimSun", "Songti SC", serif;
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.1;
}

.text-image p:last-child {
  color: var(--muted);
}

.text-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.collection-module,
.approval-module {
  padding: clamp(64px, 9vw, 112px) clamp(18px, 5vw, 72px);
}

.approval-module {
  background: #fff;
}

@media (max-width: 920px) {
  .menu-button {
    display: block;
  }

  .site-nav {
    position: absolute;
    right: 18px;
    top: 72px;
    left: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 14px;
  }

  .hero {
    min-height: 760px;
  }

  .hero-panel {
    right: 18px;
    bottom: 28px;
    left: 18px;
  }

  .hero-content {
    padding-bottom: 170px;
  }

  .service-grid,
  .split,
  .venue-grid,
  .contact-section,
  .auction-records,
  .text-image {
    grid-template-columns: 1fr;
  }

  .collection-grid {
    grid-template-columns: 1fr 1fr;
  }

  .entry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .collection-grid .featured-item {
    grid-column: 1 / -1;
  }

  .bottom-nav {
    display: grid;
  }
}

@media (max-width: 560px) {
  .site-header {
    min-height: 64px;
  }

  .brand small {
    display: none;
  }

  .hero {
    min-height: 720px;
  }

  .hero-content {
    width: 100%;
    padding-top: 54px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    justify-content: center;
    width: 100%;
  }

  .notice {
    align-items: flex-start;
  }

  .service-grid,
  .collection-grid,
  .entry-grid {
    grid-template-columns: 1fr;
  }

  .stats-row {
    grid-template-columns: 1fr;
  }

  .site-footer {
    display: grid;
  }
}