:root {
  --bg: #f6f4ef;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #667085;
  --line: rgba(15, 23, 42, 0.08);
  --primary: #7a1f1f;
  --primary-dark: #571515;
  --accent: #b89152;
  --dark: #17212b;
  --dark-soft: #243241;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans SC", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(255,255,255,0.9);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand-mark {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  display: grid;
  place-items: center;
  overflow: hidden;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
}
.brand-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  padding: 6px;
}
.brand-cn { font-size: 15px; font-weight: 700; }
.brand-en { font-size: 12px; color: var(--muted); }
.menu {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  color: #334155;
  font-size: 14px;
}
.menu a:hover { color: var(--primary); }
.lang-link {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  font-weight: 700;
}

.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    linear-gradient(rgba(17,24,39,0.72), rgba(17,24,39,0.78)),
    linear-gradient(120deg, #3a0d0d, #5f1f1f 45%, #1f2937);
}
.overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(184,145,82,0.22), transparent 28%);
}
.hero-content {
  position: relative;
  display: grid;
  grid-template-columns: 1.45fr 0.8fr;
  gap: 40px;
  align-items: center;
  padding: 90px 0 80px;
}
.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #f2d6a0;
  font-size: 13px;
  font-weight: 700;
}
.hero h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.14;
}
.hero-desc {
  max-width: 760px;
  margin: 22px 0 0;
  color: rgba(255,255,255,0.88);
  font-size: 17px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 30px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: 0.2s ease;
}
.btn-primary {
  background: var(--accent);
  color: #1b1b1b;
}
.btn-primary:hover { transform: translateY(-1px); }
.btn-secondary {
  border: 1px solid rgba(255,255,255,0.28);
  color: #fff;
}
.btn-secondary:hover { background: rgba(255,255,255,0.08); }
.hero-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 24px;
  padding: 0;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.visual-card img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  object-position: center;
  display: block;
}
.visual-card-caption {
  padding: 22px 24px 24px;
}
.hero-card h3 { margin: 0 0 8px; font-size: 22px; }
.visual-card p { margin: 0; color: rgba(255,255,255,0.88); }

.section { padding: 86px 0; }
.alt { background: #fbfaf7; }
.dark { background: var(--dark); color: #fff; }
.section-tag {
  margin: 0 0 8px;
  color: var(--accent);
  letter-spacing: 1.8px;
  font-size: 12px;
  font-weight: 800;
}
.section h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.2;
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 30px;
  margin-bottom: 32px;
}
.section-head p { max-width: 520px; color: var(--muted); margin: 0; }
.section-head.light p { color: rgba(255,255,255,0.72); }

.stats { padding-top: 34px; }
.stats-grid,
.card-grid,
.quality-grid {
  display: grid;
  gap: 22px;
}
.stats-grid { grid-template-columns: repeat(4, 1fr); }
.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.quality-grid { grid-template-columns: repeat(2, 1fr); }
.stat-card,
.info-card,
.contact-card,
.quality-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 26px;
  box-shadow: var(--shadow);
}
.image-card {
  overflow: hidden;
  padding: 0;
}
.image-card img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  object-position: center;
  display: block;
}
.card-body {
  padding: 22px 24px 24px;
}
.stat-card strong,
.info-card h3,
.quality-item h3 { display: block; margin: 0 0 10px; }
.stat-card span,
.info-card p,
.quality-item p { color: var(--muted); margin: 0; }
.gallery-section {
  background: #fff;
}
.gallery-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 22px;
}
.gallery-item {
  margin: 0;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
  min-height: 260px;
}
.gallery-item.large {
  min-height: 540px;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
.scene-card {
  padding: 0;
  overflow: hidden;
}
.scene-visual {
  height: 240px;
  position: relative;
  background: linear-gradient(135deg, #d8dee9, #f5f7fa);
}
.scene-visual::before,
.scene-visual::after {
  content: "";
  position: absolute;
  inset: auto;
}
.warehouse-scene {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.35), rgba(255,255,255,0)),
    linear-gradient(135deg, #b7c2d0, #e7edf3);
}
.warehouse-scene::before {
  left: 10%;
  right: 10%;
  bottom: 26px;
  height: 78px;
  border-radius: 14px;
  background: repeating-linear-gradient(
    90deg,
    #8b5e3c 0 16%,
    #d9a066 16% 32%
  );
  box-shadow: 0 -86px 0 -18px rgba(72, 93, 116, 0.85), 0 -150px 0 -42px rgba(72, 93, 116, 0.65);
}
.warehouse-scene::after {
  left: 8%;
  right: 8%;
  top: 26px;
  bottom: 26px;
  border: 3px solid rgba(70, 90, 110, 0.25);
  border-radius: 18px;
}
.office-scene {
  background:
    linear-gradient(180deg, #eef4f7 0%, #dfe8ee 100%);
}
.office-scene::before {
  left: 12%;
  right: 12%;
  bottom: 32px;
  height: 18px;
  border-radius: 999px;
  background: #6a4c3b;
  box-shadow: 0 -24px 0 10px #9a7a60;
}
.office-scene::after {
  width: 44%;
  aspect-ratio: 16 / 10;
  left: 28%;
  top: 52px;
  border-radius: 16px;
  background: linear-gradient(135deg, #1d2939, #4b5d73);
  box-shadow: 0 0 0 10px #f7fafc, 0 18px 30px rgba(17, 24, 39, 0.12);
}
.trade-scene {
  background: linear-gradient(135deg, #e8efe7, #d0ddd5);
}
.trade-scene::before {
  left: 14%;
  right: 14%;
  bottom: 38px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(90deg, #355c7d, #6c5b7b, #c06c84);
  box-shadow: 0 -72px 0 -26px rgba(53, 92, 125, 0.25);
}
.trade-scene::after {
  width: 76px;
  height: 76px;
  right: 18%;
  top: 34px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff, #f2c94c 45%, #d49d22 100%);
}
.two-col {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 50px;
}
.dark .quality-item {
  background: var(--dark-soft);
  border-color: rgba(255,255,255,0.08);
  box-shadow: none;
}
.dark .quality-item p { color: rgba(255,255,255,0.72); }

.contact-wrap {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 34px;
  align-items: start;
}
.contact-card { background: #fff; }
.contact-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.contact-row:last-child { border-bottom: none; }
.contact-row span { color: var(--muted); }
.contact-row strong { text-align: right; }
.contact-row a { color: var(--primary); }

.footer {
  background: #0f1720;
  color: rgba(255,255,255,0.8);
  padding: 26px 0;
}
.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
}
.footer p { margin: 6px 0 0; color: rgba(255,255,255,0.62); }
.footer-copy { font-size: 14px; }

@media (max-width: 980px) {
  .hero-content,
  .two-col,
  .contact-wrap,
  .section-head,
  .footer-wrap {
    grid-template-columns: 1fr;
    display: grid;
  }
  .stats-grid,
  .card-grid.three,
  .quality-grid,
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }
  .gallery-item.large {
    grid-column: span 2;
    min-height: 360px;
  }
  .nav { align-items: start; flex-direction: column; }
}

@media (max-width: 640px) {
  .container { width: min(100% - 28px, 1160px); }
  .hero-content { padding: 74px 0 64px; }
  .scene-visual { height: 200px; }
  .stats-grid,
  .card-grid.three,
  .quality-grid,
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-item.large {
    grid-column: auto;
    min-height: 260px;
  }
  .menu { gap: 14px; }
  .contact-row {
    flex-direction: column;
    align-items: start;
  }
  .contact-row strong { text-align: left; }
}