:root {
  --element-color: #8B6914;
  --element-color-soft: #A07D20;
}

/* ============ Navigation ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 22px var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(12, 8, 5, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 0.5px solid rgba(139, 105, 20, 0.12);
  opacity: 0;
  animation: fadeIn 1s 0.1s forwards ease-out;
}
.nav-brand svg { width: 22px; height: 26px; }
.nav-back {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--ink);
  opacity: 0.7;
  transition: opacity 0.3s, color 0.3s;
}
.nav-back:hover { opacity: 1; color: var(--terra); }
.nav-back::before { content: "← "; }

/* ============ Page hero ============ */
.page-hero {
  min-height: 46vh;
  padding: 120px var(--pad-x) 72px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  background: #1A1208;
  text-align: center;
}
.page-hero-tag {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 5px;
  color: rgba(245, 237, 224, 0.8);
  text-transform: none;
  margin-bottom: 40px;
  opacity: 0;
}
.page-hero-tag::before, .page-hero-tag::after {
  content: none;
  display: inline-block;
  margin: 0 14px;
  opacity: 0.6;
  font-style: normal;
}
.page-hero-symbol {
  color: var(--element-color);
  margin-bottom: 32px;
  opacity: 0;
}
.page-hero-symbol svg { width: 80px; height: 80px; display: block; }
.page-hero-title {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: var(--fs-h1);
  letter-spacing: var(--ls-h1);
  color: var(--khaki);
  text-shadow: 0 1px 14px rgba(0,0,0,0.22);
  text-transform: none;
  line-height: var(--lh-head);
  margin-bottom: 16px;
  opacity: 0;
}
.page-hero-cn {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: clamp(36px, 7vw, 96px);
  letter-spacing: 14px;
  padding-left: 14px;
  color: rgba(196, 164, 124, 0.85);
  margin-bottom: 36px;
  opacity: 0;
}
body.lang-en .page-hero-cn { display: none; }
.page-hero-divider {
  width: 36px;
  height: 0.5px;
  background: var(--terra);
  margin: 0 auto 32px;
  opacity: 0;
}
.page-hero-desc {
  max-width: 520px;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 14px;
  letter-spacing: 1.5px;
  line-height: 2.4;
  color: rgba(196, 164, 124, 0.85);
  text-shadow: 0 1px 10px rgba(0,0,0,0.18);
  opacity: 0;
}
body.lang-en .page-hero-desc {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 15px;
  letter-spacing: 0.5px;
}

/* ============ Products ============ */
.products {
  padding: var(--pad-y) 0;
  background: var(--bg-organic);}
.products-header {
  max-width: 1200px;
  margin: 0 auto 70px;
  text-align: center;
}
.products-tag {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--terra);
  text-transform: none;
  margin-bottom: 18px;
}
.products-title {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: var(--fs-h2);
  letter-spacing: var(--ls-h2);
  color: var(--terra);
  text-transform: none;
  margin-bottom: 12px;
}
body.lang-en .products-title { font-style: normal; text-transform: none; }
.products-title-cn {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: 13px;
  letter-spacing: 12px;
  padding-left: 12px;
  color: var(--ink-soft);
}
body.lang-en .products-title-cn { display: none; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.product-card {
  background: var(--bg-organic);  border: 0.5px solid rgba(139, 105, 20, 0.1);
  cursor: pointer;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.5s ease, border-color 0.5s ease;
  overflow: visible;
  display: flex;
  flex-direction: column;
  color: inherit;
  border-radius: 0;
}
.product-card:hover {
  box-shadow: 0 24px 48px -16px rgba(62, 39, 35, 0.18);
}
.product-image {
  aspect-ratio: 1 / 1;
  background: var(--bone);
  color: var(--element-color);
  border-radius: 0;
  overflow: hidden;
}
.product-img-a, .product-img-b { transition: opacity 0.5s cubic-bezier(0.16,1,0.3,1), transform 0.6s cubic-bezier(0.16,1,0.3,1); }
.product-card:hover .product-img-a,
.product-card:hover .product-img-b { transform: scale(1.04); }
.product-image svg { width: 64px; height: 64px; opacity: 0.55; }
.product-info {
  padding: 16px 2px 0;
  text-align: left;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-name {
  font-family: var(--font-head);
  font-size: var(--fs-h3);
  font-weight: 400;
  letter-spacing: 0.5px;
  color: var(--ink);
  text-transform: none;
  margin-bottom: 6px;
}
body.lang-en .product-name { font-style: normal; text-transform: none; }
.product-name-cn {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 13px;
  letter-spacing: 6px;
  padding-left: 0;
  color: var(--ink-soft);
  margin-bottom: 14px;
}
body.lang-en .product-name-cn { display: none; }
.product-meta {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 11.5px;
  letter-spacing: 2px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 18px;
  min-height: 44px;
}
body.lang-en .product-meta {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 13px;
  letter-spacing: 0.5px;
}
.product-price {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--ink-soft);
  margin-top: 0;
}

/* ============ Philosophy ============ */
.philosophy {
  padding: var(--pad-y) 0;
  background: var(--bg-organic);  text-align: center;
}
.philosophy-tag {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 5px;
  color: var(--terra);
  text-transform: none;
  margin-bottom: 22px;
}
.philosophy-tag::before, .philosophy-tag::after {
  content: none;
  display: inline-block;
  margin: 0 12px;
  opacity: 0.6;
  font-style: normal;
}
.philosophy-title {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: var(--fs-h2);
  letter-spacing: var(--ls-h2);
  color: var(--terra);
  text-transform: none;
  margin-bottom: 50px;
}
body.lang-en .philosophy-title { font-style: normal; text-transform: none; }
.philosophy-text {
  max-width: 620px;
  margin: 0 auto;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 14px;
  letter-spacing: 1.5px;
  line-height: 2.4;
  color: var(--ink);
}
body.lang-en .philosophy-text {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 15px;
  letter-spacing: 0.5px;
}


/* ============ Responsive ============ */
@media (max-width: 900px) {
  .nav { padding: 16px 28px; }

  .page-hero { padding: 120px 24px 60px; }
  .products, .philosophy { padding: 80px 24px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 540px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}