:root {
  --ink: #1f1c17;
  --muted: #686058;
  --line: #e6ded0;
  --paper: #f7f4ee;
  --gold: #b99652;
  --gold-dark: #8f7138;
  --white: #fff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  background: #fff;
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 68px;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0 clamp(18px, 4vw, 56px);
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.brand {
  font-size: 25px;
  font-weight: 800;
  color: var(--ink);
  white-space: nowrap;
}
.brand small {
  display: block;
  margin-top: 1px;
  color: var(--gold-dark);
  font-size: 11px;
  font-weight: 900;
}
nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
  color: var(--muted);
  font-size: 14px;
}
.phone {
  min-width: 132px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: var(--ink);
  border-radius: 4px;
  font-weight: 700;
}

.hero {
  min-height: calc(100vh - 68px);
  display: grid;
  grid-template-columns: minmax(300px, 0.86fr) minmax(360px, 1.14fr);
  gap: clamp(24px, 5vw, 70px);
  padding: clamp(42px, 6vw, 76px) clamp(18px, 5vw, 70px) 42px;
  background:
    linear-gradient(90deg, #262018 0%, #2f2a23 42%, #f7f4ee 42%, #f7f4ee 100%);
}
.heroText { color: #fff; align-self: center; }
.eyebrow {
  margin: 0 0 14px;
  color: #d3bc82;
  font-size: 14px;
  font-weight: 700;
}
h1 {
  margin: 0;
  font-size: clamp(52px, 8vw, 92px);
  line-height: .98;
  letter-spacing: 0;
}
.company {
  margin: 20px 0 0;
  color: #f2ece1;
  font-size: clamp(19px, 2vw, 25px);
  font-weight: 700;
}
.company span, dd span {
  color: #d3bc82;
  font-size: .86em;
}
.brandEn {
  margin: 10px 0 0;
  color: #d3bc82;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 800;
}
.summary {
  max-width: 540px;
  margin: 22px 0 0;
  color: #d8d0c3;
  font-size: 16px;
  line-height: 1.8;
}
.summary.en {
  margin-top: 12px;
  color: #c8c0b3;
}
.heroActions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.primary, .secondary {
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 4px;
  font-weight: 800;
}
.primary { background: var(--gold); color: #241e17; }
.secondary { border: 1px solid #786d5f; color: #fff; }

.heroProducts {
  align-self: center;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.heroProducts article, .productCard {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
}
.heroProducts article {
  min-height: 190px;
  padding: 14px;
  display: flex;
  flex-direction: column;
}
.heroProducts img {
  width: 100%;
  aspect-ratio: 1.2;
  object-fit: contain;
  background: #fff;
}
.heroProducts span, .productCard span {
  margin-top: 10px;
  color: var(--gold-dark);
  font-size: 12px;
  font-weight: 800;
}
.heroProducts strong {
  margin-top: 5px;
  font-size: 14px;
  line-height: 1.35;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.stats div {
  min-height: 112px;
  padding: 24px clamp(16px, 4vw, 50px);
  border-right: 1px solid var(--line);
}
.stats div:last-child { border-right: 0; }
.stats strong { display: block; font-size: 31px; }
.stats span { color: var(--muted); font-size: 13px; }

.categoryBand, .productSection, .contactSection {
  padding: 58px clamp(18px, 5vw, 70px);
}
.categoryBand { background: var(--paper); }
.seoLinks {
  padding: 58px clamp(18px, 5vw, 70px);
  background: #fff;
  border-top: 1px solid var(--line);
}
.seoGrid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}
.seoGrid a {
  min-height: 170px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
}
.seoGrid strong { font-size: 18px; line-height: 1.3; }
.seoGrid span {
  color: var(--gold-dark);
  font-size: 13px;
  font-weight: 900;
}
.seoGrid small { color: var(--muted); line-height: 1.5; }
.seoHero {
  padding: clamp(48px, 7vw, 86px) clamp(18px, 5vw, 70px);
  color: #fff;
  background: #262018;
}
.seoHero h1 {
  max-width: 920px;
  font-size: clamp(42px, 6vw, 78px);
}
.seoHero p {
  max-width: 850px;
  color: #d8d0c3;
  font-size: 18px;
  line-height: 1.75;
}
.seoContent {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr);
  gap: 22px;
  padding: 56px clamp(18px, 5vw, 70px);
  background: var(--paper);
}
.seoContent article, .seoContent aside {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}
.seoContent p, .seoContent li {
  color: var(--muted);
  line-height: 1.75;
}
.seoBullets {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 0 clamp(18px, 5vw, 70px) 56px;
  background: var(--paper);
}
.seoBullets div {
  min-height: 120px;
  padding: 20px;
  color: var(--muted);
  line-height: 1.65;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}
.seoProducts { background: #fff; }
.sectionHead {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  margin-bottom: 24px;
}
.sectionHead p {
  margin: 0 0 6px;
  color: var(--gold-dark);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}
h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
}
.categoryGrid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}
.categoryCard {
  min-height: 230px;
  padding: 18px;
  text-align: left;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}
.categoryCard strong { display: block; font-size: 20px; }
.categoryCard small {
  display: block;
  margin-top: 4px;
  color: var(--gold-dark);
  font-size: 13px;
  font-weight: 900;
}
.categoryCard span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.55;
}
.categoryCard .enText {
  margin-top: 6px;
  color: #7d746a;
  font-size: 13px;
}
.categoryCard em {
  display: block;
  margin-top: 12px;
  color: var(--gold-dark);
  font-style: normal;
  font-weight: 800;
}
.categoryCard:hover, .categoryCard.active { border-color: var(--gold); box-shadow: 0 8px 26px rgba(31,28,23,.08); }

.productHead { align-items: center; }
.tools {
  display: flex;
  align-items: end;
  gap: 10px;
}
.tools label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
}
input, select {
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  padding: 0 12px;
  font: inherit;
  color: var(--ink);
}
input { width: min(280px, 46vw); }
.activeLine {
  display: flex;
  justify-content: space-between;
  padding: 12px 0 18px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}
.activeLine span:first-child { color: var(--ink); font-weight: 800; }
.productGrid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}
.productCard {
  min-height: 245px;
  padding: 14px;
}
.productCard img {
  width: 100%;
  aspect-ratio: 1.15;
  object-fit: contain;
}
.productCard strong {
  display: block;
  margin-top: 7px;
  font-size: 14px;
  line-height: 1.4;
}

.contactSection {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) 260px;
  gap: 30px;
  background: #262018;
  color: #fff;
}
.contactInfo > p:not(.eyebrow) { color: #d8d0c3; }
.contactActions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 30px 0 0;
}
dt { color: #d3bc82; font-size: 13px; }
dd { margin: 7px 0 0; font-size: 20px; font-weight: 800; }
.qrPanel {
  align-self: start;
  padding: 16px;
  background: #fff;
  border-radius: 6px;
  color: var(--ink);
  text-align: center;
}
.qrPanel img {
  width: 100%;
  max-height: 300px;
  object-fit: contain;
}
.qrPanel span { display: block; margin-top: 10px; font-weight: 800; }
footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 22px clamp(18px, 5vw, 70px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 1100px) {
  .hero { grid-template-columns: 1fr; background: #262018; }
  .heroProducts, .categoryGrid, .seoGrid, .seoBullets { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .productGrid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .topbar { height: auto; min-height: 64px; flex-wrap: wrap; gap: 12px; padding-block: 12px; }
  nav { order: 3; width: 100%; margin-left: 0; }
  .phone { margin-left: auto; }
  .hero { padding-top: 34px; }
  .heroProducts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .categoryGrid, .productGrid, .seoGrid, .seoBullets { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .seoContent { grid-template-columns: 1fr; }
  .sectionHead, .productHead { align-items: stretch; flex-direction: column; }
  .tools { align-items: stretch; flex-direction: column; }
  input { width: 100%; }
  .contactSection { grid-template-columns: 1fr; }
  dl { grid-template-columns: 1fr; }
}
@media (max-width: 460px) {
  .heroProducts, .categoryGrid, .productGrid, .stats, .seoGrid, .seoBullets { grid-template-columns: 1fr; }
  h1 { font-size: 48px; }
  footer { flex-direction: column; }
}