:root {
  --bg: #f7f9f7;
  --surface: #ffffff;
  --surface-2: #edf3ef;
  --ink: #15211b;
  --muted: #61706a;
  --line: #dce5df;
  --brand: #136f3a;
  --brand-2: #1f8a58;
  --accent: #b98932;
  --danger: #9f3a32;
  --shadow: 0 18px 45px rgba(21, 33, 27, .10);
  --radius: 8px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.topbar { background: #123324; color: #d9eee2; font-size: 13px; }
.topbar-inner { display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; }
.topbar a { color: #fff; }
.navbar { position: sticky; top: 0; z-index: 40; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 8px; background: var(--brand); color: #fff; font-weight: 800; letter-spacing: 0; }
.brand b { display: block; font-size: 19px; line-height: 1.1; }
.brand small { display: block; color: var(--muted); font-size: 12px; margin-top: 3px; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a { padding: 10px 14px; border-radius: 8px; color: #31433a; font-weight: 600; }
.nav-links a:hover, .nav-links a.active { background: var(--surface-2); color: var(--brand); }
.menu-button { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.menu-button span { display: block; width: 18px; height: 2px; margin: 4px auto; background: var(--ink); }
.hero { padding: 64px 0 44px; background: linear-gradient(180deg, #f3f8f4, #fff); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr); gap: 44px; align-items: center; }
.eyebrow { display: inline-flex; color: var(--brand); font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.22; margin: 0 0 12px; }
h1 { font-size: clamp(34px, 5vw, 58px); }
h2 { font-size: clamp(24px, 3vw, 34px); }
h3 { font-size: 19px; }
p { margin: 0 0 16px; color: var(--muted); }
.lead, .hero-copy p, .page-hero p { font-size: 18px; max-width: 760px; }
.hero-actions, .summary-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 18px; border-radius: 8px; border: 1px solid var(--line); font-weight: 800; cursor: pointer; }
.button.primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.button.primary:hover { background: #0e5a2e; }
.button.secondary { background: #fff; color: var(--brand); }
.button.block { width: 100%; }
.hero-visual { position: relative; min-height: 410px; border-radius: 8px; overflow: hidden; box-shadow: var(--shadow); background: #dfe8e2; }
.hero-visual img { width: 100%; height: 100%; min-height: 410px; object-fit: cover; }
.metric-panel { position: absolute; left: 18px; bottom: 18px; display: grid; grid-template-columns: auto auto; gap: 3px 10px; padding: 16px; border-radius: 8px; background: rgba(255,255,255,.92); box-shadow: var(--shadow); }
.metric-panel b { font-size: 24px; color: var(--brand); }
.metric-panel span { align-self: center; color: var(--muted); }
.section { padding: 58px 0; }
.section.muted { background: var(--surface-2); }
.section-head { margin-bottom: 24px; }
.section-head p { max-width: 720px; }
.category-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.category-strip a { display: flex; justify-content: space-between; gap: 8px; padding: 16px; background: #fff; border: 1px solid var(--line); border-radius: 8px; font-weight: 800; }
.category-strip a span { color: var(--brand); }
.product-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.product-grid.compact { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.product-card { background: #fff; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; transition: transform .18s ease, box-shadow .18s ease; }
.product-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.product-media { display: block; aspect-ratio: 4 / 3; background: #e8eee9; overflow: hidden; }
.product-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .25s ease; }
.product-card:hover .product-media img { transform: scale(1.04); }
.product-card-body { padding: 14px; }
.product-card h3 { min-height: 47px; font-size: 18px; }
.product-card p { min-height: 52px; font-size: 14px; }
.product-card small { color: #708078; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cta-band { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 28px; background: #163c2a; color: #fff; border-radius: 8px; }
.cta-band p { color: #dceee4; }
.page-hero { padding: 48px 0; background: #eff6f1; border-bottom: 1px solid var(--line); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.breadcrumb a { color: var(--brand); }
.search-bar { margin-top: 24px; }
.search-bar input { width: min(680px, 100%); height: 50px; border: 1px solid var(--line); border-radius: 8px; padding: 0 16px; font-size: 16px; }
.filter-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.filter-row button { border: 1px solid var(--line); background: #fff; color: #33443b; border-radius: 8px; min-height: 38px; padding: 0 12px; cursor: pointer; }
.filter-row button.active, .filter-row button:hover { background: var(--brand); color: #fff; border-color: var(--brand); }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.category-card a { display: block; min-height: 188px; padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.category-card span { color: var(--brand); font-weight: 800; }
.category-card:hover a { box-shadow: var(--shadow); }
.product-hero { padding: 42px 0; background: #fff; }
.product-hero-grid { display: grid; grid-template-columns: minmax(360px, .9fr) minmax(0, 1.1fr); gap: 38px; align-items: start; }
.gallery { position: sticky; top: 96px; }
.main-image { border-radius: 8px; overflow: hidden; background: #edf2ee; border: 1px solid var(--line); aspect-ratio: 4 / 3; }
.main-image img { width: 100%; height: 100%; object-fit: cover; }
.thumb-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; margin-top: 10px; }
.thumb { border: 1px solid var(--line); background: #fff; padding: 0; border-radius: 8px; overflow: hidden; aspect-ratio: 1 / 1; cursor: pointer; }
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb.active { border-color: var(--brand); box-shadow: 0 0 0 2px rgba(19,111,58,.14); }
.product-summary h1 { margin-top: 10px; }
.quick-specs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 28px 0 0; }
.quick-specs div { padding: 14px; background: var(--surface-2); border-radius: 8px; }
.quick-specs dt { color: var(--muted); font-size: 13px; }
.quick-specs dd { margin: 4px 0 0; font-weight: 800; }
.detail-layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 28px; align-items: start; }
.detail-content, .aside-panel, .contact-form, .contact-card { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 24px; }
.detail-content h2 { margin-top: 18px; }
.detail-content h2:first-child { margin-top: 0; }
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 24px 0; }
.info-grid div { background: var(--surface-2); border-radius: 8px; padding: 18px; }
.info-grid ul, .source-detail ul, .source-detail ol { padding-left: 20px; }
.source-detail { color: #35453d; }
.source-detail img { margin: 14px 0; border-radius: 8px; border: 1px solid var(--line); }
.detail-aside { position: sticky; top: 96px; display: grid; gap: 16px; }
.keyword-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.keyword-cloud span { display: inline-flex; padding: 7px 10px; border-radius: 8px; background: var(--surface-2); color: var(--brand); font-size: 13px; font-weight: 700; }
.contact-layout { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 20px; align-items: start; }
.contact-form { display: grid; gap: 14px; }
.contact-form label { display: grid; gap: 6px; font-weight: 800; }
.contact-form input, .contact-form textarea { width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 12px; font: inherit; }
.sitemap-layout { display: grid; grid-template-columns: 220px 300px 1fr; gap: 20px; align-items: start; }
.sitemap-layout div { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 20px; }
.sitemap-layout ul { margin: 0; padding-left: 20px; max-height: 520px; overflow: auto; }
.site-footer { background: #10251a; color: #d9e8df; padding: 44px 0 18px; }
.site-footer p, .site-footer a { color: #c7d9cf; }
.footer-grid { display: grid; grid-template-columns: 1.1fr .9fr 1fr; gap: 28px; }
.copyright { margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12); color: #9db2a7; font-size: 13px; }
.float-inquiry { position: fixed; right: 18px; bottom: 18px; z-index: 35; width: 54px; height: 54px; display: grid; place-items: center; background: var(--accent); color: #fff; border-radius: 50%; box-shadow: var(--shadow); font-weight: 800; }
[hidden] { display: none !important; }
@media (max-width: 980px) {
  .hero-grid, .product-hero-grid, .detail-layout, .contact-layout, .sitemap-layout { grid-template-columns: 1fr; }
  .gallery, .detail-aside { position: static; }
  .product-grid, .product-grid.compact { grid-template-columns: repeat(3, 1fr); }
  .category-strip, .category-grid, .info-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 740px) {
  .topbar-inner { flex-direction: column; gap: 2px; }
  .menu-button { display: block; }
  .nav-links { display: none; position: absolute; left: 16px; right: 16px; top: 72px; background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 8px; box-shadow: var(--shadow); }
  .nav-links.open { display: grid; }
  .brand small { display: none; }
  .hero { padding-top: 38px; }
  .hero-visual, .hero-visual img { min-height: 280px; }
  .product-grid, .product-grid.compact, .category-strip, .category-grid, .info-grid, .quick-specs, .footer-grid { grid-template-columns: 1fr; }
  .thumb-row { grid-template-columns: repeat(4, 1fr); }
  .cta-band { flex-direction: column; align-items: flex-start; }
}