*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --gold: #c9a96e;
  --gold-light: #e8d5a3;
  --gold-dark: #a07d3a;
  --black: #0a0a0a;
  --black-soft: #141414;
  --black-card: #1a1a1a;
  --gray: #888;
  --gray-light: #bbb;
  --white: #f5f0e8;
  --white-pure: #fff;
  --font-serif: 'Noto Serif SC', 'Playfair Display', Georgia, serif;
  --font-display: 'Playfair Display', 'Noto Serif SC', Georgia, serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-serif);
  background: var(--black);
  color: var(--white);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--black); }
::-webkit-scrollbar-thumb { background: var(--gold-dark); border-radius: 3px; }

/* ── Navigation ── */
.nav {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 1.2rem 2rem;
  display: flex; align-items: center; justify-content: space-between;
  transition: background .4s, padding .4s, backdrop-filter .4s;
}
.nav.scrolled {
  background: rgba(10,10,10,.92);
  backdrop-filter: blur(20px);
  padding: .8rem 2rem;
  border-bottom: 1px solid rgba(201,169,110,.15);
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem; font-weight: 700;
  color: var(--gold);
  letter-spacing: 2px;
  text-decoration: none;
}
.nav-logo span { color: var(--white); font-weight: 600; margin-left: .3rem; font-size: 1.5rem; letter-spacing: 4px; text-transform: uppercase; }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  color: var(--gray-light); text-decoration: none; font-size: .85rem;
  letter-spacing: 2px; text-transform: uppercase;
  transition: color .3s; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 1px; background: var(--gold);
  transition: width .3s;
}
.nav-links a:hover { color: var(--gold); }
.nav-links a:hover::after { width: 100%; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.nav-toggle span { width: 24px; height: 1.5px; background: var(--gold); transition: transform .3s, opacity .3s; }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -5px); }

/* ── Hero ── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(201,169,110,.08) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(201,169,110,.05) 0%, transparent 60%),
    linear-gradient(180deg, var(--black) 0%, #0d0d0d 100%);
}
.hero-pattern {
  position: absolute; inset: 0; opacity: .03;
  background-image: repeating-linear-gradient(0deg, transparent, transparent 50px, rgba(201,169,110,.5) 50px, rgba(201,169,110,.5) 51px),
                     repeating-linear-gradient(90deg, transparent, transparent 50px, rgba(201,169,110,.5) 50px, rgba(201,169,110,.5) 51px);
}
.hero-content { position: relative; z-index: 2; max-width: 800px; padding: 2rem; }
.hero-badge {
  display: inline-block; padding: .4rem 1.5rem;
  border: 1px solid var(--gold-dark); border-radius: 2px;
  font-size: .7rem; letter-spacing: 4px; text-transform: uppercase;
  color: var(--gold); margin-bottom: 2rem;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700; line-height: 1.15;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 50%, var(--gold-dark) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: clamp(.95rem, 2vw, 1.15rem);
  color: var(--gray-light); max-width: 560px; margin: 0 auto 2.5rem;
  font-weight: 400; line-height: 2;
}
.hero-cta {
  display: inline-flex; align-items: center; gap: .6rem;
  padding: .9rem 2.5rem;
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  color: var(--black); font-family: var(--font-serif);
  font-size: .85rem; font-weight: 600; letter-spacing: 2px;
  text-decoration: none; text-transform: uppercase;
  border: none; cursor: pointer;
  transition: transform .3s, box-shadow .3s;
}
.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 40px rgba(201,169,110,.25);
}
.hero-scroll {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  color: var(--gray); font-size: .7rem; letter-spacing: 3px;
  animation: float 2.5s ease-in-out infinite;
}
.hero-scroll-line { width: 1px; height: 40px; background: linear-gradient(to bottom, var(--gold), transparent); }
@keyframes float { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

/* ── Sections Common ── */
.section { padding: 6rem 2rem; }
.section-inner { max-width: 1100px; margin: 0 auto; }
.section-label {
  font-size: .7rem; letter-spacing: 5px; text-transform: uppercase;
  color: var(--gold); margin-bottom: .8rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700; margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--white) 30%, var(--gold-light));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-desc {
  color: var(--gray); font-size: .95rem; max-width: 600px;
  line-height: 2; margin-bottom: 3rem;
}
.divider {
  width: 60px; height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin: 1.5rem 0;
}

/* ── About ── */
.about { background: var(--black-soft); }
.about-layout {
  display: grid; grid-template-columns: 1fr auto; gap: 4rem; align-items: center;
}
.about-text .section-desc { max-width: none; }
.about-stats-side {
  display: flex; flex-direction: column; gap: 1.2rem;
}
.about-stat-card {
  padding: 1.5rem 2.5rem; text-align: center;
  border: 1px solid rgba(201,169,110,.1);
  background: linear-gradient(145deg, rgba(201,169,110,.04), transparent);
  transition: border-color .3s;
}
.about-stat-card:hover { border-color: rgba(201,169,110,.25); }
.about-stat-num {
  font-family: var(--font-serif);
  font-size: 1.8rem; font-weight: 700; color: var(--gold);
  line-height: 1; white-space: nowrap;
}
.about-stat-label {
  font-size: .7rem; color: var(--gray); letter-spacing: 3px;
  margin-top: .5rem; text-transform: uppercase;
}

/* ── Brands ── */
.brands-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.brand-card {
  position: relative; padding: 2.5rem 2rem; text-align: center;
  background: var(--black-card);
  border: 1px solid rgba(201,169,110,.08);
  transition: border-color .4s, transform .4s, box-shadow .4s;
  overflow: hidden;
}
.brand-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0; transition: opacity .4s;
}
.brand-card:hover {
  border-color: rgba(201,169,110,.25);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.brand-card:hover::before { opacity: 1; }
.brand-card h3 {
  font-family: var(--font-display);
  font-size: 1.4rem; color: var(--gold-light);
  margin-bottom: .3rem; font-weight: 600;
}
.brand-card .brand-cn {
  font-size: .8rem; color: var(--gray); letter-spacing: 3px; margin-bottom: 1rem;
}
.brand-card p {
  font-size: .85rem; color: var(--gray-light); line-height: 1.8;
}

/* ── Services ── */
.services { background: var(--black-soft); }
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.service-card {
  padding: 2.5rem; background: var(--black-card);
  border: 1px solid rgba(201,169,110,.06);
  transition: border-color .3s;
  display: flex; gap: 1.5rem; align-items: flex-start;
}
.service-card:hover { border-color: rgba(201,169,110,.2); }
.service-num {
  flex-shrink: 0;
  font-family: var(--font-display);
  font-size: 2.2rem; font-weight: 700;
  color: rgba(201,169,110,.15);
  line-height: 1;
}
.service-card h3 { font-size: 1rem; color: var(--gold-light); margin-bottom: .5rem; letter-spacing: 1px; }
.service-card p { font-size: .85rem; color: var(--gray); line-height: 1.8; }

/* ── Subsites ── */
.subsites-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.subsite-card {
  position: relative; padding: 3rem 2.5rem;
  border: 1px solid rgba(201,169,110,.12);
  background: linear-gradient(160deg, rgba(201,169,110,.04), transparent 60%);
  transition: border-color .4s, transform .4s, box-shadow .4s;
  display: flex; flex-direction: column; min-height: 280px;
}
.subsite-card:hover {
  border-color: rgba(201,169,110,.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.subsite-num {
  font-family: var(--font-display);
  font-size: 4rem; font-weight: 700;
  color: rgba(201,169,110,.08); line-height: 1;
  position: absolute; top: 1.5rem; right: 2rem;
}
.subsite-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem; color: var(--gold-light); margin-bottom: .5rem;
}
.subsite-card p { font-size: .9rem; color: var(--gray); line-height: 1.9; margin-bottom: 1.5rem; }
.subsite-link {
  margin-top: auto;
  display: inline-flex; align-items: center; gap: .5rem;
  color: var(--gold); font-size: .8rem; letter-spacing: 2px;
  text-transform: uppercase; text-decoration: none;
  transition: gap .3s;
}
.subsite-link:hover { gap: .8rem; }
.subsite-link svg { width: 16px; height: 16px; }

/* ── Contact ── */
.contact { text-align: center; }
.contact-inner {
  max-width: 700px; margin: 0 auto;
  padding: 4rem 3rem;
  border: 1px solid rgba(201,169,110,.12);
  background: linear-gradient(180deg, rgba(201,169,110,.03), transparent);
}
.contact-methods { display: flex; justify-content: center; gap: 3rem; margin-top: 2rem; flex-wrap: wrap; }
.contact-method { text-align: center; }
.contact-method-label {
  font-size: .7rem; letter-spacing: 3px; text-transform: uppercase;
  color: var(--gold); margin-bottom: .3rem;
}
.contact-method-value { font-size: .95rem; color: var(--gray-light); }
.contact-method-value a { color: var(--gray-light); text-decoration: none; transition: color .3s; }
.contact-method-value a:hover { color: var(--gold); }

/* ── Footer ── */
.footer {
  padding: 2rem; text-align: center;
  border-top: 1px solid rgba(201,169,110,.08);
  font-size: .75rem; color: var(--gray); letter-spacing: 1px;
}
.footer-icp {
  margin-top: .6rem; font-size: .7rem; letter-spacing: .5px;
}
.footer-icp a {
  color: var(--gray); text-decoration: none; transition: color .3s;
}
.footer-icp a:hover { color: var(--gold); }
.beian-icon { width: 14px; height: 14px; vertical-align: text-bottom; margin-right: 4px; position: relative; top: -1px; }
.footer-sep { margin: 0 .6rem; opacity: .4; }

/* ── Fade-in Animation ── */
.fade-up {
  opacity: 0; transform: translateY(30px);
  transition: opacity .8s ease, transform .8s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ── Mobile ── */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
    background: rgba(10,10,10,.97); backdrop-filter: blur(20px);
    align-items: center; justify-content: center;
    gap: 2rem; z-index: 999;
  }
  .nav-links.open a { font-size: 1.1rem; }
  .nav-toggle { display: flex; z-index: 1001; }
  .about-layout { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-stats-side { flex-direction: row; }
  .about-stat-card { flex: 1; padding: 1.2rem 1rem; }
  .brands-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .subsites-grid { grid-template-columns: 1fr; }
  .contact-inner { padding: 2.5rem 1.5rem; }
  .section { padding: 4rem 1.2rem; }
}
@media (max-width: 480px) {
  .about-stats-side { flex-direction: column; }
  .contact-methods { flex-direction: column; gap: 1.5rem; }
}