:root{--ink:#102134;--muted:#637386;--accent:#f26434;--accent-dark:#ce4720;--line:#e3e8ed;--surface:#f3f5f8;--white:#fff;color-scheme:light;font-family:Inter,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:14px;color:var(--ink);background:var(--surface);font-synthesis:none}
*{box-sizing:border-box}
body{margin:0;min-width:320px;line-height:1.55}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed}
:where(a,button,input,select,textarea):focus-visible{outline:2px solid #cf4e27;outline-offset:3px}
img{display:block;max-width:100%}
h1,h2,h3,p{margin:0}
.wrap{width:min(100% - 48px,1320px);margin-inline:auto}
.skip-link{position:fixed;top:8px;left:8px;transform:translateY(-150%);z-index:10;background:#fff;padding:10px 16px;border:2px solid var(--accent)}
.skip-link:focus{transform:none}
.site-header{background:#fff}
.utility{background:#f1f3f6;border-bottom:1px solid #e9edf0;color:#546579;font-size:12px}
.utility-inner{height:34px;display:flex;justify-content:space-between;align-items:center;gap:14px}
.utility-line{display:inline-flex;align-items:center;gap:8px}
.utility-line i{width:6px;height:6px;background:var(--accent);border-radius:50%}
.utility-tag{font-size:10px;letter-spacing:.12em;background:#e6ebf0;color:#354c60;border-radius:3px;padding:2px 7px}
.masthead{min-height:81px;display:grid;grid-template-columns:218px minmax(300px,1fr) auto;align-items:center;gap:26px;padding-block:14px}
.brand{--symbol-width:46px;--wordmark-width:158px;display:inline-flex;align-items:center;gap:8px;width:max-content}
.brand-symbol,.brand-wordmark{display:block;flex:none;background-image:url('./assets/brand-original.jpg');background-repeat:no-repeat}
.brand-symbol{width:var(--symbol-width);aspect-ratio:120/108;background-size:666.6667% 740.7407%;background-position:17.7941% 50.4335%}
.brand-wordmark{width:var(--wordmark-width);aspect-ratio:432/64;background-size:185.1852% 1250%;background-position:68.2065% 48.913%}
.brand small{display:block;color:#66788a;font-size:11px;margin-top:2px;letter-spacing:.08em;white-space:nowrap}
.site-search{display:flex;width:100%;max-width:675px;height:44px;border:1px solid #cfd8e2;border-radius:6px;overflow:hidden;background:#fff}
.site-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px #f2643422}
.site-search select{width:75px;padding-left:13px;flex-shrink:0;border:0;border-right:1px solid #e6ebf0;background:#f8fafc;color:var(--ink);outline:0}
.site-search input{width:0;flex:1;min-width:0;padding-inline:14px;border:0;background:#fff;color:var(--ink);outline:none}
.site-search input::placeholder{color:#6f8193}
.site-search button{height:100%;display:flex;gap:6px;align-items:center;justify-content:center;padding:0 23px;border:0;background:var(--accent);color:#17212a;font-weight:750;white-space:nowrap}
.site-search button:hover{background:#fa774c}
.mast-actions{display:flex;align-items:center;justify-content:flex-end;gap:17px}
.account-button{display:inline-flex;align-items:center;gap:6px;background:transparent;color:#34485c;border:0;padding:8px 0;white-space:nowrap}
.account-button:hover,.nav-quick:hover{color:#f58b68}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:8px 15px;border:1px solid #d4dde5;border-radius:5px;background:#fff;color:var(--ink);font-weight:650;white-space:nowrap;transition:background .16s,border-color .16s}
.btn:hover{border-color:#b9c8d6;background:#f5f7f9}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#16202c}
.btn-primary:hover{background:#ff7a4e;border-color:#ff7a4e}
.main-nav{background:#14283c;color:#e7edf3}
.nav-inner{display:flex;height:48px;align-items:stretch;gap:18px}
.nav-categories{display:flex;width:218px;flex:0 0 218px;align-items:center;gap:11px;padding-inline:18px;background:#233e55;color:#fff;font-weight:700}
.nav-categories svg{color:#f78259}
.nav-categories:hover{background:#2c4a63}
.nav-pages{display:flex;align-items:stretch;gap:3px}
.nav-pages a{display:flex;position:relative;align-items:center;padding-inline:21px;white-space:nowrap;font-weight:600}
.nav-pages a:hover{background:#ffffff10;color:#fff}
.nav-pages a[aria-current="page"]{color:#ff906d;background:#ffffff0c}
.nav-pages a[aria-current="page"]:after{content:"";position:absolute;height:3px;left:18px;right:18px;bottom:0;background:var(--accent)}
.nav-quick{margin-left:auto;display:flex;align-items:center;gap:9px;white-space:nowrap;font-weight:650;font-size:13px;color:#f0f4fa}
.nav-quick span{color:#f78259}
main{min-height:58vh;outline:none}
.home{padding:16px 0 42px}
.home-mast{display:grid;grid-template-columns:218px minmax(0,1fr) 254px;gap:14px;align-items:stretch}
.category-rail,.buyer-panel{background:#fff;border:1px solid var(--line);border-radius:6px;min-width:0}
.category-rail{display:flex;flex-direction:column;padding:4px 10px 6px}
.category-rail a{min-height:52px;display:grid;grid-template-columns:30px minmax(0,1fr) 12px;align-items:center;gap:6px;padding:6px 6px;border-bottom:1px solid #eef1f4}
.category-rail a:last-child{border-bottom:0}
.category-rail a:hover{background:#fff4ef;border-radius:4px}
.rail-icon{color:#4b6983}
.category-rail strong{display:block;line-height:1.35;font-size:14px;white-space:nowrap}
.category-rail small{display:block;color:#708092;font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:3px}
.rail-arrow{color:#7b8c9f;font-size:15px}
.home-hero{position:relative;isolation:isolate;overflow:hidden;min-height:324px;border-radius:7px;background:#112337;color:#fff;display:flex;align-items:center}
.hero-image{position:absolute;inset:0;z-index:-2;background:linear-gradient(125deg,#132a43,#0e1d30);background-size:cover;background-position:70% 52%}
.hero-image.has-photo{background-image:url('./assets/hero.webp')}
.home-hero:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#102237 0%,#102237 14%,#102237ee 30%,#10223784 53%,transparent 79%)}
.hero-schematic{position:absolute;z-index:-2;right:0;top:0;width:65%;height:100%;color:#839aae;background:linear-gradient(#6fa2be10 1px,transparent 1px),linear-gradient(90deg,#6fa2be10 1px,transparent 1px);background-size:26px 26px;opacity:.9}
.hero-image.has-photo + .hero-schematic{display:none}
.hero-schematic svg{width:100%;height:100%;object-fit:contain}
.hero-content{width:min(100%,430px);padding:25px clamp(24px,3vw,46px) 42px}
.eyebrow{font-size:11px;letter-spacing:.1em;color:#a8391c;font-weight:800}
.hero-kicker{display:flex;align-items:center;gap:9px;color:#ff9a78}
.hero-kicker:before{content:"";width:16px;height:2px;background:#ff8e69}
.hero-content h1{font-size:clamp(29px,3.25vw,47px);line-height:1.17;font-weight:850;letter-spacing:-.045em;margin-top:11px;text-wrap:balance}
.hero-content p{font-size:13px;color:#d6e0e9;margin-top:13px;letter-spacing:.025em}
.hero-actions{display:flex;gap:9px;margin-top:22px;flex-wrap:wrap}
.hero-actions .btn{min-height:38px}
.hero-actions .btn-ghost{background:#182d42c9;border-color:#8199ad;color:#fff}
.hero-actions .btn-ghost:hover{background:#284357}
.hero-dots{display:flex;align-items:center;gap:6px;position:absolute;left:clamp(24px,3vw,46px);bottom:17px}
.hero-dots button{background:#8fa4b9;border:0;border-radius:7px;height:6px;width:8px;padding:0}
.hero-dots button[aria-pressed="true"]{width:21px;background:#fb865c}
.buyer-panel{padding:18px 16px 15px;display:flex;flex-direction:column}
.buyer-title{display:flex;align-items:center;gap:10px}
.buyer-icon{width:35px;height:35px;display:grid;place-items:center;border-radius:6px;background:#fff0e9;color:#b94220}
.buyer-panel h2{font-size:18px;line-height:1.3;font-weight:800}
.buyer-panel>p{color:#647789;font-size:12px;margin:12px 0 15px}
.buyer-panel>.btn{width:100%;min-height:39px;margin-bottom:9px}
.buyer-panel>.btn:not(.btn-primary){border-color:#f2b39d;color:#96391e;background:#fff8f5}
.buyer-panel>.btn:not(.btn-primary):hover{background:#ffede3}
.buyer-links{border-top:1px solid var(--line);margin-top:auto;padding-top:4px}
.buyer-links a{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 1px;color:#354c60;font-weight:650;font-size:12px}
.buyer-links a + a{border-top:1px solid #eef1f4}
.buyer-links a:hover{color:var(--accent-dark)}
.shortcut-strip{display:grid;grid-template-columns:repeat(3,1fr);margin-top:14px;border:1px solid var(--line);border-radius:6px;background:#fff}
.shortcut-strip a{display:flex;gap:12px;align-items:center;padding:15px 18px;min-width:0}
.shortcut-strip a:hover{background:#f8fafc}
.shortcut-strip a+a{border-left:1px solid var(--line)}
.shortcut-icon{width:34px;height:34px;flex:none;display:grid;place-items:center;background:#ecf1f6;border-radius:6px;color:#304e68}
.shortcut-strip strong,.shortcut-strip small{display:block}
.shortcut-strip strong{font-size:14px;font-weight:800}
.shortcut-strip small{margin-top:1px;font-size:11px;color:var(--muted)}
.home-ads{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:14px}
.home-ad{display:grid;grid-template-columns:minmax(0,1fr) minmax(78px,36%);align-items:center;min-width:0;overflow:hidden;border:1px solid #dce4ec;border-radius:6px;background:#eaf0f6;color:var(--ink)}
.home-ad:hover{border-color:#7893a8}
.home-ad-bolt{background:#f7eee3;border-color:#ede1d2}
.home-ad-motor{background:#e8f0ec;border-color:#d8e7df}
.home-ad-copy{padding:12px 0 12px 14px}
.home-ad-label{display:inline-block;padding:1px 5px;border:1px solid currentColor;border-radius:3px;color:#475569;font-size:10px}
.home-ad h2{margin:4px 0 2px;font-size:16px;line-height:1.35}
.home-ad p,.home-ad-action{font-size:11px;color:#475569}
.home-ad p{margin:0 0 3px}
.home-ad-action{font-weight:700}
.home-ad img{width:100%;height:auto;object-fit:contain;mix-blend-mode:multiply}
@media(max-width:680px){.home-ads{grid-template-columns:1fr;gap:7px;margin-top:10px}.home-ad{grid-template-columns:minmax(0,1fr) 108px}.home-ad-copy{padding:8px 0 8px 12px}}
.home-section{margin-top:24px}
.section-head{display:flex;align-items:center;gap:19px;margin-bottom:12px;flex-wrap:wrap}
.section-title{display:flex;align-items:center;gap:10px;font-size:23px;font-weight:850;line-height:1.25;letter-spacing:-.025em;white-space:nowrap}
.section-title:before{content:"";width:4px;height:19px;border-radius:1px;background:var(--accent)}
.section-more{margin-left:auto;white-space:nowrap;font-weight:650;font-size:12px;color:#3a546c}
.section-more:hover{color:#a73b1c}
.home-tabs{display:flex;gap:6px;align-items:center;overflow:auto;max-width:100%;scrollbar-width:none}
.home-tabs button{background:transparent;border:1px solid transparent;white-space:nowrap;border-radius:4px;color:#5c6d7f;font-size:12px;padding:5px 9px}
.home-tabs button[aria-selected="true"]{color:#9d381c;border-color:#f4c8b9;background:#fff2ec;font-weight:750}
.home-products{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}
.home-product{display:block;overflow:hidden;border:1px solid var(--line);background:#fff;border-radius:6px;min-width:0;transition:border-color .16s,box-shadow .16s}
.home-product:hover{border-color:#f4a98d;box-shadow:0 6px 20px #1021340d}
.home-product-img{height:157px;background:#eef1f4;overflow:hidden;position:relative}
.home-product-img img{width:100%;height:100%;object-fit:contain}
.home-product-tag{position:absolute;top:10px;left:10px;background:#fff;color:#45627b;padding:2px 6px;border-radius:3px;font-size:10px;font-weight:650}
.home-product-copy{padding:11px 13px 13px}
.home-product h3{font-size:15px;font-weight:800;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.home-product-meta{color:#687b8d;font-size:11px;margin-top:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.home-product-foot{margin-top:10px;display:flex;align-items:baseline;gap:8px;justify-content:space-between}
.home-product-price{color:#a93c1d;font-size:16px;font-weight:800;white-space:nowrap}
.home-product-city{color:#687b8d;font-size:11px;white-space:nowrap}
.home-bottom{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:17px}
.home-request-list,.home-suppliers{border:1px solid var(--line);border-radius:6px;background:#fff;overflow:hidden}
.home-request-list>a,.home-suppliers>a{display:flex;align-items:center;justify-content:space-between;gap:12px;min-width:0;padding:13px 16px}
.home-request-list>a+a,.home-suppliers>a+a{border-top:1px solid var(--line)}
.home-request-list>a:hover,.home-suppliers>a:hover{background:#f8fafc}
.home-request-copy,.home-supplier-copy{min-width:0}
.home-request-copy strong,.home-supplier-copy strong{font-size:14px;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.home-request-copy span,.home-supplier-copy span{display:block;color:#64788b;font-size:11px;margin-top:3px}
.home-request-badge{color:#205c44;background:#eaf5ee;font-size:11px;border-radius:3px;padding:3px 7px;white-space:nowrap}
.home-supplier-icon{color:#395974;width:34px;height:34px;flex:none;display:grid;place-items:center;border-radius:5px;background:#eaf0f6;font-weight:800}
.home-supplier-copy{flex:1}
.site-footer{background:#fff;border-top:1px solid var(--line)}
.footer-inner{min-height:96px;padding-block:18px;display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.footer-brand{--symbol-width:36px;--wordmark-width:128px}.footer-brand small{font-size:10px}
.footer-inner nav{display:flex;gap:15px;color:#375269;font-weight:650;font-size:12px}
.footer-inner small{font-size:11px;color:#637386}
.account-dialog{width:min(92vw,480px);border:1px solid var(--line);border-radius:10px;background:white;padding:25px;color:var(--ink);box-shadow:0 16px 60px #08182a4a}
.account-dialog::backdrop{background:#0e20359b}
.account-dialog h2{margin-top:6px;font-size:25px}.account-dialog p{color:var(--muted);margin-top:7px}
.dialog-close{position:absolute;right:13px;top:10px;border:0;background:#f1f4f7;color:var(--ink);border-radius:4px;width:32px;height:32px;font-size:22px}
.role-options{display:grid;gap:9px;margin-top:18px}
.role-options a{padding:13px;border:1px solid var(--line);border-radius:5px;background:#fafbfc}
.role-options a:hover{border-color:#f5a68a;background:#fff6f2}
.role-options span{display:block;color:#63778a;font-size:12px;margin-top:3px}.role-options b{float:right;color:var(--accent-dark)}
.toast{position:fixed;left:50%;bottom:25px;transform:translateX(-50%);z-index:20;max-width:calc(100vw - 28px);width:max-content;background:#102134;color:#fff;padding:10px 16px;border-radius:5px;box-shadow:0 10px 24px #0d182d35;font-size:13px}
.toast[hidden]{display:none}
@media(max-width:1110px){.masthead{gap:15px;grid-template-columns:185px minmax(200px,1fr) auto}.mast-actions{gap:9px}.home-mast{grid-template-columns:180px minmax(0,1fr) 212px;gap:10px}.nav-categories{width:180px;flex-basis:180px}.category-rail a{min-height:51px}.buyer-panel{padding:15px 12px}.nav-pages a{padding-inline:14px}.home-hero{min-height:319px}}
@media(max-width:880px){.wrap{width:calc(100% - 32px)}.masthead{grid-template-columns:1fr auto;min-height:0;gap:10px 15px}.site-search{order:3;grid-column:1/-1;max-width:none}.nav-categories{display:none}.nav-inner{gap:9px}.nav-pages a{padding-inline:13px}.home-mast{grid-template-columns:minmax(0,1fr) 210px}.category-rail{grid-column:1/-1;grid-row:2;display:grid;grid-template-columns:repeat(3,1fr)}.category-rail a{min-height:47px}.home-hero{min-height:288px}.home-products{grid-template-columns:repeat(2,minmax(0,1fr))}.home-product-img{height:155px}.home-bottom{grid-template-columns:1fr}}
@media(max-width:560px){.wrap{width:calc(100% - 24px)}.utility-inner{height:28px}.utility{font-size:10px}.utility-tag{font-size:9px}.brand small{font-size:10px}.masthead{padding-block:10px;gap:8px 9px}.mast-actions{gap:8px}.account-button span{display:none}.mast-publish{font-size:11px;min-height:34px;padding:5px 8px}.site-search{height:40px}.site-search input{padding-inline:9px;font-size:12px}.site-search select{width:61px;padding-left:7px;font-size:12px}.site-search button{padding-inline:10px;font-size:12px}.nav-inner{width:100%;height:43px;overflow-x:auto;scrollbar-width:none}.nav-pages a{padding-inline:12px;font-size:12px}.nav-pages a[aria-current="page"]:after{left:10px;right:10px}.nav-quick{padding-right:10px;font-size:11px}.home{padding-top:10px}.home-mast{grid-template-columns:1fr;gap:9px}.home-hero{min-height:273px}.hero-content{padding:24px 20px 42px}.hero-content h1{font-size:34px;max-width:280px}.hero-content p{max-width:240px;font-size:11px}.hero-dots{left:20px}.home-hero:after{background:linear-gradient(90deg,#102237 0%,#102237e8 25%,#1022377a 66%,#10223728)}.category-rail{grid-row:auto;grid-column:auto;padding:2px 6px;grid-template-columns:repeat(3,minmax(0,1fr))}.category-rail a{min-height:43px;display:flex;gap:4px;padding:4px;justify-content:center}.category-rail .rail-icon{width:17px;height:17px;flex:none}.category-rail strong{font-size:11px}.category-rail small,.rail-arrow{display:none}.buyer-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:11px}.buyer-title{grid-column:1/-1}.buyer-panel h2{font-size:16px}.buyer-panel>p{display:none}.buyer-panel>.btn{margin-bottom:0;padding-inline:6px;font-size:12px}.buyer-links{grid-column:1/-1;display:flex;gap:13px;margin-top:0;padding-top:2px}.buyer-links a{flex:1;padding:7px 2px}.buyer-links a+a{border-top:0}.shortcut-strip{margin-top:9px}.shortcut-strip a{gap:5px;padding:9px 5px;flex-direction:column;align-items:flex-start}.shortcut-icon{width:26px;height:26px}.shortcut-icon svg{width:17px;height:17px}.shortcut-strip strong{font-size:11px}.shortcut-strip small{font-size:9px}.home-section{margin-top:18px}.section-head{gap:8px;margin-bottom:8px}.section-title{font-size:18px}.home-tabs{order:3;flex:1 0 100%;gap:4px}.home-tabs button{padding:3px 6px;font-size:11px}.home-products{gap:7px}.home-product-img{height:107px}.home-product-copy{padding:8px}.home-product h3{font-size:12px}.home-product-price{font-size:13px}.home-product-city{font-size:10px}.home-product-foot{gap:4px}.footer-inner{gap:12px}.footer-inner>small{flex-basis:100%}}
@media(max-width:560px){.home-hero{grid-row:1}}
@media(max-width:1110px){.brand:not(.footer-brand){--symbol-width:38px;--wordmark-width:139px;gap:7px}}
@media(max-width:560px){.brand:not(.footer-brand){--symbol-width:34px;--wordmark-width:124px;gap:6px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}