:root {
  --ink:#171a1d; --paper:#f7f6f2; --line:#deded8; --accent:#c63e0a; --bright:#f65c23; --muted:#5c5e60;
  color:var(--ink); background:var(--paper); font:16px/1.55 Geist, "Microsoft YaHei UI", "PingFang SC", sans-serif;
}
* { box-sizing:border-box; }
body { margin:0; }
a { color:inherit; text-decoration:none; }
a:hover { text-decoration:underline; text-underline-offset:4px; }
button,input,textarea,select { font:inherit; }
button { cursor:pointer; }
img { display:block; max-width:100%; }
h1,h2,h3,p { margin-top:0; }
h1,h2,h3 { line-height:1.24; }
h1 { font-size:clamp(2rem,4vw,3.2rem); margin-bottom:.45em; }
h2 { font-size:1.45rem; }
h3 { font-size:1rem; }
address { font-style:normal; display:grid; gap:.25rem; overflow-wrap:anywhere; }
.wrap { width:min(1240px,calc(100% - 64px)); margin-inline:auto; }
.sr { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); white-space:nowrap; }
.button { display:inline-flex; align-items:center; justify-content:center; min-height:44px; padding:10px 18px; border:1px solid var(--accent); border-radius:4px; background:var(--accent); color:#fff; font-weight:700; text-align:center; }
.button:hover { background:#a83208; text-decoration:none; }
.button:disabled { opacity:.65; cursor:wait; }
.outline { color:var(--ink); border-color:#a3a5a5; background:transparent; }
.outline:hover { background:#e8e6e1; }
:focus-visible { outline:3px solid #a83008; outline-offset:3px; }
.site-header { background:#fff; border-bottom:1px solid var(--line); }
.header-inner { display:flex; justify-content:space-between; align-items:center; min-height:76px; gap:24px; }
.header-inner nav { display:flex; gap:clamp(14px,3vw,42px); font-weight:650; align-items:center; }
.logo { display:inline-flex; align-items:center; gap:9px; font-weight:900; font-size:1.22rem; line-height:1; white-space:nowrap; }
.logo i { font-family:Arial,sans-serif; font-size:3.15rem; font-weight:950; font-style:italic; color:var(--bright); line-height:.9; }
.logo small { display:block; font:850 .66rem/1.2 Arial,sans-serif; letter-spacing:.19em; margin-top:5px; }
.hero { background:linear-gradient(90deg,#171a1d 34%,#171a1ddd 42%,#171a1d00 68%),#171a1d url("workbench.png") right center / auto 130% no-repeat; color:white; }
.hero-inner { min-height:440px; display:flex; align-items:center; }
.hero-inner > div { width:min(560px,100%); padding:46px 0; }
.hero h1 { font-size:clamp(2.65rem,5.6vw,5.15rem); letter-spacing:-.045em; line-height:1.08; }
.hero p { font-size:1.15rem; }
.search { display:flex; gap:0; align-items:stretch; max-width:680px; }
.search input,.search select { min-width:0; flex:1; border-radius:4px 0 0 4px; }
.search .button { border-radius:0 4px 4px 0; flex:none; }
input:not([type=checkbox]),textarea,select { background:#fff; color:var(--ink); border:1px solid #aaa; min-height:44px; padding:9px 12px; border-radius:4px; }
.search input:focus,.search select:focus { z-index:1; }
.home-content { padding-block:26px 50px; }
.section-heading { display:flex; gap:20px; align-items:center; margin:28px 0 18px; }
.section-heading h2 { margin:0; font-size:clamp(1.4rem,2.4vw,2rem); }
.section-heading span { border-top:1px solid #c9cac4; flex:1; }
.section-heading a,.detail-link,.tile span,.brand-card span { color:var(--accent); font-weight:700; }
.brand-strip,.tiles,.products,.brands-grid,.article-grid { display:grid; gap:16px; }
.brand-strip { grid-template-columns:repeat(6,minmax(0,1fr)); background:white; border:1px solid var(--line); gap:0; }
.brand-strip a { display:grid; place-items:center; min-height:75px; border-right:1px solid var(--line); padding:8px; }
.brand-strip a:last-child { border-right:0; }
.brand-strip img { height:55px; width:100%; object-fit:contain; }
.tiles,.products { grid-template-columns:repeat(4,minmax(0,1fr)); }
.tile,.product-card,.brand-card,.article-grid article,.panel { background:#fff; border:1px solid var(--line); border-radius:4px; }
.tile { overflow:hidden; }
.tile strong { display:flex; justify-content:space-between; padding:10px 14px; }
.product-card { overflow:hidden; display:flex; flex-direction:column; }
.product-photo,.detail-photo { display:grid; place-items:center; aspect-ratio:4/3; background:#fff; padding:12px; overflow:hidden; border-bottom:1px solid var(--line); }
.product-photo img,.detail-photo img { width:100%; height:100%; min-height:0; object-fit:contain; }
.no-image { font-size:.9rem; color:var(--muted); }
.product-copy { padding:14px; display:flex; flex:1; flex-direction:column; align-items:flex-start; gap:6px; }
.product-copy h3,.product-copy .model { margin:0; overflow-wrap:anywhere; }
.eyebrow { color:var(--muted); font-size:.79rem; font-weight:700; }
.model { font:500 .92rem/1.4 "IBM Plex Mono",Consolas,monospace; color:var(--muted); }
.detail-link { display:block; padding-top:8px; margin-top:auto; font-size:.9rem; }
.inquiry-banner { background:linear-gradient(90deg,#171a1d 25%,#171a1d90),url("workbench.png") right center/cover; color:white; padding-block:44px; }
.inquiry-banner h2 { margin-bottom:8px; font-size:2rem; }
footer { background:#171a1d; color:#fff; padding-block:27px; }
.footer { display:flex; justify-content:space-between; gap:20px; align-items:center; }
.footer p { font-size:.88rem; margin:8px 0 0; }
.footer nav { display:flex; gap:16px; flex-wrap:wrap; font-size:.88rem; }
.page-title { color:white; background:linear-gradient(90deg,#171a1d 32%,#171a1d70),url("workbench.png") right 46%/cover; padding:32px 0; }
.page-title h1,.page-title p { margin:0; }
.page-title p { margin-top:8px; color:#eaeaea; }
.inner { padding-block:20px 58px; min-height:55vh; }
.crumb { color:var(--muted); font-size:.88rem; margin-bottom:24px; padding-bottom:12px; border-bottom:1px solid var(--line); }
.crumb a { text-decoration:underline; text-underline-offset:3px; }
.catalog-layout { display:grid; grid-template-columns:230px minmax(0,1fr); gap:28px; }
.catalog-layout .products { grid-template-columns:repeat(3,minmax(0,1fr)); }
.result-list .products { grid-template-columns:1fr; }
.result-list .product-card { display:grid; grid-template-columns:minmax(130px,210px) minmax(0,1fr); }
.result-list .product-photo { border-bottom:0; border-right:1px solid var(--line); }
.filters { border-right:1px solid var(--line); padding-right:20px; }
.filters form,.fields { display:grid; align-content:start; gap:16px; }
.filters label,.fields label { display:block; font-weight:650; }
.filters select,.fields label input:not([type=checkbox]),.fields textarea,.fields select { display:block; width:100%; margin-top:6px; }
.filters .button,.fields .button { justify-self:start; }
.muted { color:var(--muted); }
.search + .muted { margin:12px 0; }
.pagination { display:flex; flex-wrap:wrap; align-items:center; gap:18px; justify-content:center; margin-top:24px; }
.pagination a { color:var(--accent); font-weight:700; }
.product-detail,.contact-grid,.inquiry-grid { display:grid; grid-template-columns:1fr 1fr; gap:38px; }
.product-title { align-self:center; }
.detail-photo { border:1px solid var(--line); border-radius:4px; }
.detail-model { font-size:clamp(1.35rem,4vw,2.55rem); color:var(--ink); font-weight:800; }
.gallery { display:flex; flex-wrap:wrap; gap:8px; margin-top:10px; }
.gallery a { width:90px; border:1px solid var(--line); }
.specs { margin:0 0 18px; border:1px solid var(--line); }
.specs > div { display:grid; grid-template-columns:minmax(75px,18%) minmax(0,1fr); }
.specs > div + div { border-top:1px solid var(--line); }
.specs dt,.specs dd { padding:9px 14px; margin:0; overflow-wrap:anywhere; }
.specs dt { background:#efeeea; font-weight:700; }
.specs dd { background:#fff; }
.prose { white-space:pre-wrap; overflow-wrap:anywhere; line-height:1.78; }
.brands-grid,.article-grid { grid-template-columns:repeat(3,minmax(0,1fr)); }
.brand-card,.article-grid article { padding:22px; }
.brand-card img { width:100%; height:64px; object-fit:contain; object-position:left; margin-bottom:12px; }
.brand-card h2 { font-size:1.18rem; }
.brand-intro { margin-bottom:20px; }
.reading { max-width:810px; margin-inline:auto; }
.reading time,.article-grid time { color:var(--muted); }
.featured-article { display:grid; grid-template-columns:1fr 1fr; gap:24px; align-items:center; background:#fff; border:1px solid var(--line); margin-bottom:20px; padding:16px; }
.featured-article time { color:var(--muted); }
.reading .prose { margin:16px 0 26px; }
.contact-photo { min-height:260px; background:#171a1d url("workbench.png") right center/cover; border-radius:4px; }
.empty { text-align:center; padding:44px 20px; border:1px solid var(--line); border-radius:4px; background:#fff; }
.confirmation { max-width:850px; margin:32px auto; }
.check { margin:0 auto 18px; width:60px; height:60px; display:grid; place-items:center; border-radius:50%; background:var(--accent); color:white; font-size:1.7rem; }
.inquiry-grid { grid-template-columns:minmax(0,2fr) minmax(0,1fr); align-items:start; }
.panel { padding:24px; }
.panel h2 { margin-bottom:4px; }
.panel .product-photo { margin:12px 0; }
.fields span,.error { color:#a83208; }
.fields .upload { border:1px dashed #8b8d8f; padding:12px; border-radius:4px; }
.upload small { display:block; font-weight:400; color:var(--muted); }
.missing { display:grid; grid-template-columns:1fr 1fr; align-items:center; gap:24px; min-height:70vh; }
.missing p { color:var(--accent); font-size:4rem; font-weight:900; margin:0; }
.missing .button { margin-top:16px; }
.admin-body { display:grid; grid-template-columns:180px minmax(0,1fr); gap:28px; padding-block:24px 64px; }
.admin-nav { display:flex; flex-direction:column; gap:4px; }
.admin-nav a { border-bottom:1px solid var(--line); padding:10px; }
.admin-heading,.admin-actions { display:flex; justify-content:space-between; gap:12px; align-items:center; flex-wrap:wrap; }
.admin-actions { justify-content:flex-start; }
.admin-heading h1 { margin-bottom:10px; }
.admin-form { max-width:840px; }
.admin .search { margin-bottom:16px; }
.admin-actions .search { margin-bottom:0; }
.admin-images { display:flex; flex-wrap:wrap; gap:12px; }
.admin-images img { width:86px; height:76px; object-fit:contain; }
.admin-images span { color:var(--ink); font-size:.85rem; }
.table-wrap { overflow:auto; }
table { width:100%; border-collapse:collapse; background:white; }
th,td { padding:10px; border-bottom:1px solid var(--line); text-align:left; }
th { background:#efeeea; }
td a { color:var(--accent); text-decoration:underline; }
.login { max-width:450px; margin:64px auto; padding:16px; }
.login .panel { margin-top:24px; }
@media(max-width:1000px) {
  .hero { background-image:linear-gradient(90deg,#171a1d 10%,#171a1d55),url("workbench.png"); }
  .products { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .catalog-layout .products { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .footer { flex-wrap:wrap; }
}
@media(max-width:720px) {
  .wrap { width:calc(100% - 32px); }
  .header-inner { flex-wrap:wrap; gap:10px; padding-block:10px; }
  .header-inner nav { order:3; width:100%; gap:8px 17px; flex-wrap:wrap; font-size:.88rem; }
  .hero-inner { min-height:340px; }
  .hero { background-size:cover; }
  .brand-strip { grid-template-columns:repeat(3,minmax(0,1fr)); }
  .tiles,.brands-grid,.article-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .catalog-layout,.product-detail,.contact-grid,.inquiry-grid,.admin-body,.missing,.featured-article { grid-template-columns:minmax(0,1fr); gap:20px; }
  .filters { border:0; border-bottom:1px solid var(--line); padding:0 0 15px; }
  .filters form { grid-template-columns:repeat(2,minmax(0,1fr)); gap:9px; }
  .filters h2 { margin-bottom:8px; font-size:1.05rem; }
  .product-title { grid-row:1; }
  .admin-nav { flex-direction:row; flex-wrap:wrap; }
  .admin .search { flex-wrap:wrap; }
  .inquiry-banner { padding-block:30px; }
  .missing { padding-block:30px; }
}
@media(max-width:390px) {
  .brand-card,.article-grid article,.panel { padding:12px; }
  .product-copy { padding:8px; }
  .product-copy h3 { font-size:.94rem; }
}


.company-logo{font-size:.94rem;white-space:normal}.company-logo img{width:88px;height:auto;flex:none}.footer .company-logo img{background:white;padding:3px;border-radius:3px}@media(max-width:720px){.company-logo{font-size:.75rem;gap:6px}.company-logo img{width:56px}}.qq-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:14px}#contact-product{margin-bottom:16px}.pagination button[disabled]{opacity:.5;cursor:default}