:root{
  --brand:#0d4a8f; --brand-d:#083364; --brand-l:#e8f0fa;
  --accent:#f26522; --accent-d:#d95310;
  --ink:#16212e; --ink2:#4a5a6e; --ink3:#7b8a9c;
  --line:#e3e8ef; --bg:#ffffff; --bg2:#f6f8fb;
  --radius:10px; --shadow:0 4px 18px rgba(16,32,56,.07);
  --maxw:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.65 "Segoe UI",Roboto,Helvetica,Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--accent)}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em;font-weight:700;color:#0f1d2c}
h1{font-size:2.1rem}h2{font-size:1.6rem}h3{font-size:1.18rem}
p{margin:0 0 1em}
ul{margin:0 0 1em;padding-left:1.2em}
table{width:100%;border-collapse:collapse;margin:0 0 1.2em;font-size:.95rem}
th,td{border:1px solid var(--line);padding:.6rem .7rem;text-align:left;vertical-align:top}
th{background:var(--bg2);font-weight:600}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.ic{width:15px;height:15px;fill:currentColor;vertical-align:-2px;margin-right:5px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5em;padding:.72em 1.4em;border-radius:var(--radius);border:1px solid transparent;font-weight:600;font-size:.95rem;cursor:pointer;transition:.18s;background:var(--brand);color:#fff}
.btn:hover{background:var(--brand-d);color:#fff;transform:translateY(-1px)}
.btn-primary{background:var(--accent)}
.btn-primary:hover{background:var(--accent-d)}
.btn-outline{background:transparent;border-color:#fff;color:#fff}
.btn-outline:hover{background:#fff;color:var(--brand)}
.btn-sm{padding:.5em 1em;font-size:.86rem}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- topbar ---------- */
.topbar{background:var(--brand-d);color:#cfe0f3;font-size:.83rem}
.topbar .wrap{display:flex;gap:22px;align-items:center;min-height:36px;flex-wrap:wrap}
.topbar a{color:#cfe0f3}
.topbar a:hover{color:#fff}
.tb-right{margin-left:auto;opacity:.85}

/* ---------- header ---------- */
.site-header{background:#fff;position:sticky;top:0;z-index:1000;box-shadow:0 1px 0 var(--line),0 2px 12px rgba(16,32,56,.04)}
.navwrap{display:flex;align-items:center;gap:20px;min-height:70px}
.logo{display:flex;align-items:center;line-height:1;flex-shrink:0;white-space:nowrap}
.logo img{height:38px;width:auto;max-width:210px;object-fit:contain;display:block}
.logoTxt{font-size:1.6rem;font-weight:800;color:var(--brand);letter-spacing:-.5px}
.tb-co{font-weight:600}
.mainnav{margin-left:auto;min-width:0}
.mainnav>ul{display:flex;gap:2px;list-style:none;margin:0;padding:0;white-space:nowrap}
.mainnav>ul>li{position:relative}
.mainnav a{display:block;padding:12px 11px;font-weight:600;font-size:.93rem;color:var(--ink);white-space:nowrap}
.mainnav a:hover,.mainnav a.on{color:var(--brand)}
.mainnav a.on::after{content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;background:var(--accent)}
.has-sub .sub{position:absolute;top:100%;left:0;background:#fff;min-width:250px;list-style:none;margin:0;padding:6px 0;box-shadow:var(--shadow);border-radius:8px;opacity:0;visibility:hidden;transform:translateY(6px);transition:.18s;z-index:20;border:1px solid var(--line)}
.has-sub:hover .sub{opacity:1;visibility:visible;transform:none}
.sub a{font-weight:500;font-size:.9rem;padding:9px 16px;color:var(--ink2)}
.sub a:hover{background:var(--brand-l);color:var(--brand)}
.caret{display:inline-block;width:0;height:0;border:4px solid transparent;border-top-color:currentColor;vertical-align:2px;margin-left:3px}
.nav-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}
.navsearch{display:flex;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--bg2)}
.navsearch input{border:0;background:transparent;padding:7px 10px;font-size:.86rem;width:132px;outline:none}
.navsearch button{border:0;background:transparent;padding:0 10px;cursor:pointer}
.navsearch svg{width:16px;height:16px;fill:var(--ink3)}
.menu-btn{display:none;background:transparent;border:0;cursor:pointer;padding:8px;margin-left:auto}
.menu-btn span{display:block;width:22px;height:2px;background:var(--ink);margin:4px 0;transition:.2s}

/* ---------- hero ---------- */
.hero{position:relative;background:linear-gradient(120deg,#0b3d70 0%,#0d4a8f 55%,#1668b8 100%);color:#fff;padding:74px 0 66px;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-80px;width:520px;height:520px;border-radius:50%;background:rgba(255,255,255,.06)}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero h1{color:#fff;font-size:2.5rem;margin-bottom:.4em}
.hero p.lead{font-size:1.06rem;color:#d6e6f8;margin-bottom:1.4em;max-width:640px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 24px;list-style:none;padding:0;margin:0 0 1.6em}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:.92rem;color:#e4effb}
.hero-points li::before{content:"✓";color:#6ee7a8;font-weight:700}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:20px;backdrop-filter:blur(4px)}
.hstat b{display:block;font-size:1.75rem;line-height:1.1;color:#fff}
.hstat span{font-size:.82rem;color:#cfe0f3}

/* ---------- sections ---------- */
.section{padding:60px 0}
.section.alt{background:var(--bg2)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 36px}
.sec-head .kicker{color:var(--accent);font-weight:700;font-size:.82rem;letter-spacing:1.4px;text-transform:uppercase;margin-bottom:6px}
.sec-head h2{margin-bottom:.3em}
.sec-head p{color:var(--ink2);margin:0}

/* ---------- category cards ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdcec}
.cat-card .thumb{height:150px;background:var(--brand-l);position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}
.cat-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.cat-card:hover .thumb img{transform:scale(1.06)}
.cat-card .thumb.no-img::after{content:"YUYANG";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#b9cbe4;font-weight:800;letter-spacing:2px}
.cat-card .body{padding:16px 18px 18px}
.cat-card h3{font-size:1.05rem;margin-bottom:.3em}
.cat-card h3 a{color:var(--ink)}
.cat-card h3 a:hover{color:var(--brand)}
.cat-card p{font-size:.88rem;color:var(--ink2);margin-bottom:.8em}
.cat-card .more{font-size:.86rem;font-weight:600}

/* ---------- product cards ---------- */
.p-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:20px}
.p-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column;position:relative}
.p-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdcec}
.p-card .thumb{aspect-ratio:1/1;background:var(--bg2);border-bottom:1px solid var(--line);position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}
.p-card .thumb img{width:100%;height:100%;object-fit:contain;padding:8px;transition:transform .3s}
.p-card:hover .thumb img{transform:scale(1.05)}
.p-card .thumb .noimg{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#b3c2d4;font-size:.85rem}
.p-card .body{padding:13px 15px 16px;display:flex;flex-direction:column;flex:1}
.p-card h3{font-size:.95rem;line-height:1.4;margin-bottom:.5em;min-height:2.7em}
.p-card h3 a{color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.p-card h3 a:hover{color:var(--brand)}
.p-card .meta{font-size:.78rem;color:var(--ink3);margin-bottom:.8em}
.p-card .actions{display:flex;gap:8px;margin-top:auto}
.p-card .actions .btn{flex:1;justify-content:center;padding:.5em .6em;font-size:.82rem}
.badge-new{position:absolute;top:8px;left:8px;background:var(--accent);color:#fff;font-size:.7rem;font-weight:700;padding:3px 8px;border-radius:4px;z-index:2}

/* ---------- product detail ---------- */
.crumbs{font-size:.85rem;color:var(--ink3);padding:14px 0 0}
.crumbs a{color:var(--ink3)}
.crumbs a:hover{color:var(--brand)}
.pd{display:grid;grid-template-columns:1fr 1fr;gap:36px;padding:22px 0 40px}
.gallery .main{aspect-ratio:1/1;border:1px solid var(--line);border-radius:var(--radius);background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden}
.gallery .main img{width:100%;height:100%;object-fit:contain;padding:10px}
.gallery .main .noimg{color:#aebccd}
.thumbs{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.thumbs img{width:74px;height:74px;object-fit:contain;border:1px solid var(--line);border-radius:8px;cursor:pointer;background:#fff;padding:3px}
.thumbs img.on{border-color:var(--brand);box-shadow:0 0 0 2px rgba(13,74,143,.12)}
.pd h1{font-size:1.7rem;margin-bottom:.3em}
.pd .sku{color:var(--ink3);font-size:.86rem;margin-bottom:1em}
.pd .short{background:var(--bg2);border-left:3px solid var(--accent);padding:12px 16px;border-radius:0 8px 8px 0;margin-bottom:1.2em;color:var(--ink2);font-size:.95rem}
.cta-row{display:flex;gap:10px;flex-wrap:wrap;margin:1.2em 0}
.tabs{margin:10px 0 0}
.tab-nav{display:flex;gap:2px;border-bottom:2px solid var(--line);flex-wrap:wrap}
.tab-nav button{background:transparent;border:0;padding:11px 20px;font-weight:600;font-size:.95rem;color:var(--ink2);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px}
.tab-nav button.on{color:var(--brand);border-bottom-color:var(--accent)}
.tab-panels{padding:22px 0}
.tab-panel{display:none}
.tab-panel.on{display:block}
.rich h2{font-size:1.3rem;margin-top:1.4em}
.rich h2:first-child{margin-top:0}
.rich ul li{margin-bottom:.35em}
.spec-table td:first-child{width:38%;font-weight:600;color:var(--ink2);background:#fafbfd}
.faq-item{border-bottom:1px solid var(--line);padding:14px 0}
.faq-item summary{cursor:pointer;font-weight:600;font-size:1rem;list-style:none;display:flex;justify-content:space-between;gap:10px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--accent);font-weight:700;font-size:1.2rem}
.faq-item[open] summary::after{content:"−"}
.faq-item .a{padding-top:10px;color:var(--ink2);font-size:.95rem}

/* ---------- inquiry form ---------- */
.inq-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.inq-box h3{margin-bottom:.2em}
.inq-box .sub{color:var(--ink3);font-size:.88rem;margin-bottom:1.2em}
.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:.85rem;font-weight:600;margin-bottom:5px;color:var(--ink2)}
.form-row input,.form-row textarea,.form-row select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;font:inherit;font-size:.94rem;background:#fff;transition:.15s}
.form-row input:focus,.form-row textarea:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px rgba(13,74,143,.09)}
.form-row textarea{min-height:110px;resize:vertical}
.form-2{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}
.form-msg{margin-top:10px;font-size:.9rem;display:none;padding:10px 12px;border-radius:8px}
.form-msg.ok{display:block;background:#e8f7ee;color:#177245;border:1px solid #b7e3c6}
.form-msg.err{display:block;background:#fdecec;color:#a12626;border:1px solid #f5c2c2}

/* ---------- features / why ---------- */
.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.why-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.why-item .n{width:38px;height:38px;border-radius:10px;background:var(--brand-l);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:12px}
.why-item h3{font-size:1.05rem;margin-bottom:.3em}
.why-item p{font-size:.92rem;color:var(--ink2);margin:0}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.news-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.news-card .body{padding:18px}
.news-card .date{font-size:.8rem;color:var(--ink3)}
.news-card h3{font-size:1.05rem;margin:.3em 0 .5em}
.news-card p{font-size:.9rem;color:var(--ink2);flex:1}
.article{max-width:840px;margin:0 auto;padding:20px 0 50px}
.article .meta{color:var(--ink3);font-size:.86rem;margin-bottom:1.4em}
.article h2{margin-top:1.6em;font-size:1.35rem}
.article h3{margin-top:1.2em}
.article li{margin-bottom:.4em}

/* ---------- pagination ---------- */
.pager{display:flex;gap:6px;justify-content:center;margin:36px 0 0;flex-wrap:wrap}
.pager a,.pager span{padding:8px 14px;border:1px solid var(--line);border-radius:8px;font-size:.9rem;background:#fff}
.pager a:hover{border-color:var(--brand);color:var(--brand)}
.pager .on{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;padding:20px 0 50px}
.info-list{list-style:none;padding:0}
.info-list li{padding:12px 0;border-bottom:1px dashed var(--line);display:flex;gap:12px}
.info-list b{display:block;color:var(--ink3);font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-bottom:2px}
.map{margin-top:18px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-height:220px;background:var(--bg2);display:flex;align-items:center;justify-content:center;color:var(--ink3)}

/* ---------- footer ---------- */
.site-footer{background:#0c2037;color:#a9bdd4;padding:52px 0 0;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:32px;padding-bottom:36px}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:14px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:8px;font-size:.9rem}
.site-footer a{color:#a9bdd4}
.site-footer a:hover{color:#fff}
.fdesc{font-size:.9rem;color:#8fa6c0}
.social{display:flex;gap:9px;margin-top:16px;flex-wrap:wrap}
.social a{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;transition:transform .2s,filter .2s;box-shadow:0 2px 8px rgba(0,0,0,.22)}
.social a svg{width:19px;height:19px;display:block}
.social a:hover{transform:translateY(-3px);filter:brightness(1.15);color:#fff}
.social a.s-wa{background:#25d366}
.social a.s-ig{background:linear-gradient(45deg,#f09433 0%,#e6683c 28%,#dc2743 52%,#cc2366 76%,#bc1888 100%)}
.social a.s-in{background:#0a66c2}
.social a.s-yt{background:#ff0000}
.social a.s-tt{background:#010101;box-shadow:0 2px 8px rgba(0,0,0,.4)}
.social a.s-xhs{background:#ff2442}
.social a.s-em{background:#f26522}
.social a.s-wa svg,.social a.s-yt svg,.social a.s-xhs svg{width:21px;height:21px}
.contact-list li{border:0;padding:4px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;font-size:.84rem;color:#7f95b0}
.footer-bottom .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.footer-bottom a{color:#7f95b0}
.footer-bottom a:hover{color:#fff}

/* ---------- floating ---------- */
.float-contact{position:fixed;right:14px;bottom:70px;z-index:900;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.fc{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 14px rgba(0,0,0,.18);opacity:.92;position:relative;transition:transform .18s,opacity .18s}
.fc svg{width:22px;height:22px;display:block}
.fc:hover{opacity:1;color:#fff;transform:scale(1.07)}
.fc:hover .fc-tag,.fc:focus-visible .fc-tag{opacity:1;transform:translateX(0);pointer-events:auto}
.fc-tag{position:absolute;right:56px;top:50%;translate:0 -50%;white-space:nowrap;background:#111827;color:#fff;font-size:.75rem;font-weight:600;padding:6px 10px;border-radius:7px;opacity:0;transform:translateX(6px);transition:.18s;pointer-events:none;box-shadow:0 4px 12px rgba(0,0,0,.18)}
.fc-tag::after{content:"";position:absolute;right:-4px;top:50%;translate:0 -50%;border:4px solid transparent;border-left-color:#111827}
.fc-wrap{position:relative}
.fc{border:0;cursor:pointer;font-family:inherit;text-decoration:none}
.fc.wa{background:#25d366}
.fc.em{background:#f26522}
.fc.ph{background:#0ea5e9}
.fc.gt{background:#7c3aed}
.fc.tp{background:#334155}
.fc.gt .goog-te-combo,.gt-pop .goog-te-combo{font-size:.85rem;padding:6px 8px;border-radius:8px;border:1px solid var(--line);max-width:180px}
.fc-pop.gt-pop{width:210px}
.gt-pop .goog-te-gadget{font-size:0}
.gt-pop .goog-te-gadget .goog-te-combo{font-size:.85rem}
.gt-pop .goog-te-gadget span a,.gt-pop .goog-te-gadget .goog-te-gadget-simple span{display:none}
.fc-pop .goog-te-spinner{margin:8px auto}
.goog-te-banner-frame,.goog-te-balloon-frame{display:none!important}
body{top:0!important}
.fc-pop{position:absolute;right:54px;bottom:0;width:236px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.16);padding:14px;text-align:left}
.fc-pop[hidden]{display:none}
.fc-pop-t{font-size:.78rem;color:#6b7280;margin-bottom:6px}
.fc-pop-mail{display:block;font-weight:700;color:#0d4a8f;font-size:.95rem;word-break:break-all;margin-bottom:10px}
.fc-pop-acts{display:flex;gap:8px;margin-bottom:8px}
.fc-pop .mini{flex:1;text-align:center;font-size:.75rem;padding:7px 6px;border-radius:7px;border:1px solid var(--line);color:#1f2937;background:#fff;font-weight:600}
.fc-pop .mini:hover{background:#f3f4f6;color:#0d4a8f;text-decoration:none}
.fc-pop .mini.alt{display:block;border:0;background:#0d4a8f;color:#fff}
.fc-pop .mini.alt:hover{background:#0a3a70;color:#fff}
.go-top{background:#5b6b7f}

/* ---------- AI 吸附条 + 即时对话框 ---------- */
.ai-dock{position:fixed;right:16px;bottom:16px;z-index:1300;display:flex;flex-direction:column;align-items:flex-end;gap:10px;font-family:inherit}
.ai-bar{display:flex;align-items:center;gap:10px;max-width:min(320px,calc(100vw - 32px));padding:9px 14px 9px 10px;border:0;cursor:pointer;
  border-radius:999px;background:linear-gradient(100deg,#0d4a8f,#1a6fc4);color:#fff;box-shadow:0 8px 26px rgba(13,74,143,.38);
  transition:transform .2s,box-shadow .2s;text-align:left}
.ai-bar:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(13,74,143,.46)}
.ai-bar-ic{position:relative;width:28px;height:28px;flex:0 0 28px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(255,255,255,.16)}
.ai-bar-ic svg{width:17px;height:17px}
.ai-dot{position:absolute;top:-1px;right:-1px;width:9px;height:9px;border-radius:50%;background:#22c55e;border:2px solid #0d4a8f;animation:aiPulse 1.8s infinite}
@keyframes aiPulse{0%,100%{box-shadow:0 0 0 0 rgba(34,197,94,.7)}50%{box-shadow:0 0 0 6px rgba(34,197,94,0)}}
.ai-bar-tx{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.ai-bar-tx b{font-size:.86rem;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ai-bar-tx i{font-size:.7rem;font-style:normal;opacity:.82;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ai-bar-ar svg{width:15px;height:15px;display:block;opacity:.9}
.ai-win{width:min(380px,calc(100vw - 32px));height:min(560px,calc(100vh - 110px));display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border-radius:16px;box-shadow:0 18px 50px rgba(11,25,48,.28);border:1px solid rgba(15,32,60,.08);
  transform-origin:bottom right;animation:aiPop .22s ease-out}
.ai-win[hidden]{display:none}
@keyframes aiPop{from{opacity:0;transform:translateY(14px) scale(.96)}to{opacity:1;transform:none}}
.ai-head{display:flex;align-items:center;gap:10px;padding:12px 12px 12px 14px;background:linear-gradient(100deg,#0d4a8f,#1a6fc4);color:#fff;flex:0 0 auto}
.ai-av{width:32px;height:32px;flex:0 0 32px;border-radius:50%;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center}
.ai-av svg{width:19px;height:19px}
.ai-head-t{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.25}
.ai-head-t b{font-size:.92rem;font-weight:700}
.ai-head-t i{font-size:.71rem;font-style:normal;opacity:.85}
.ai-head button{border:0;background:transparent;color:#fff;font-size:1.15rem;line-height:1;width:26px;height:26px;border-radius:6px;cursor:pointer;opacity:.85;flex:0 0 26px}
.ai-head button:hover{background:rgba(255,255,255,.18);opacity:1}
.ai-min{font-size:1.3rem!important}
.ai-body{flex:1 1 auto;overflow-y:auto;padding:14px;background:#f6f8fb;scroll-behavior:smooth}
.ai-msg{display:flex;margin-bottom:10px}
.ai-msg .bubble{max-width:84%;padding:9px 12px;border-radius:12px;font-size:.86rem;line-height:1.55;white-space:pre-wrap;word-break:break-word}
.ai-msg.bot .bubble{background:#fff;border:1px solid #e3e9f1;color:#1f2937;border-bottom-left-radius:3px}
.ai-msg.me{justify-content:flex-end}
.ai-msg.me .bubble{background:#0d4a8f;color:#fff;border-bottom-right-radius:3px}
.ai-msg.sys .bubble{background:#fff6e5;border-color:#f4dfae;color:#8a6416;font-size:.78rem}
.ai-msg.err .bubble{background:#fdecec;border-color:#f6c9c9;color:#a32b2b;font-size:.8rem}
.ai-typing{display:inline-flex;gap:4px;align-items:center;padding:4px 2px}
.ai-typing i{width:6px;height:6px;border-radius:50%;background:#94a3b8;animation:aiBlink 1.1s infinite}
.ai-typing i:nth-child(2){animation-delay:.18s}
.ai-typing i:nth-child(3){animation-delay:.36s}
@keyframes aiBlink{0%,80%,100%{opacity:.25;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}
.ai-quick{flex:0 0 auto;display:flex;gap:6px;overflow-x:auto;padding:0 12px 10px;background:#fff;scrollbar-width:thin}
.ai-quick button{border:1px solid #d7e0ec;background:#f4f7fb;color:#0d4a8f;font-size:.76rem;font-weight:600;padding:7px 11px;border-radius:999px;cursor:pointer;white-space:nowrap;font-family:inherit}
.ai-quick button:hover{background:#0d4a8f;color:#fff;border-color:#0d4a8f}
.ai-form{flex:0 0 auto;display:flex;gap:8px;padding:10px 12px;border-top:1px solid #e9eef5;background:#fff}
.ai-form input{flex:1;min-width:0;border:1px solid #dde4ee;border-radius:9px;padding:9px 11px;font-size:.86rem;font-family:inherit;outline:none;color:#1f2937}
.ai-form input:focus{border-color:#0d4a8f;box-shadow:0 0 0 3px rgba(13,74,143,.1)}
.ai-send{flex:0 0 40px;width:40px;height:38px;border:0;border-radius:9px;background:#0d4a8f;color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer}
.ai-send svg{width:17px;height:17px}
.ai-send:hover{background:#0a3a70}
.ai-send:disabled{opacity:.55;cursor:default}
.ai-foot{flex:0 0 auto;display:flex;gap:12px;justify-content:center;padding:8px 12px 10px;border-top:1px solid #f1f4f8;background:#fff;flex-wrap:wrap}
.ai-foot a{font-size:.72rem;color:#7b8ca3}
.ai-foot a:hover{color:#0d4a8f}
body.ai-open .float-contact{opacity:0;pointer-events:none;transform:translateX(24px)}
.float-contact{transition:opacity .2s,transform .2s}
@media(max-width:860px){
  .ai-dock{right:12px;bottom:12px;left:12px;align-items:stretch}
  .ai-bar{max-width:none}
  .ai-win{width:100%;height:min(72vh,calc(100vh - 90px))}
  .float-contact{bottom:76px}
}

/* ---------- misc ---------- */
.banner{background:linear-gradient(90deg,var(--brand),#1668b8);color:#fff;padding:34px 0;text-align:center}
.banner h2{color:#fff;margin-bottom:.3em}
.banner p{color:#d6e6f8;margin-bottom:1.2em}
.empty{padding:50px 0;text-align:center;color:var(--ink3)}
.notice{background:#fff8e6;border:1px solid #f6dfa0;color:#8a6416;padding:12px 16px;border-radius:8px;margin-bottom:20px;font-size:.9rem}

/* ---------- responsive ---------- */
/* 中宽屏：收紧导航，避免 logo + 菜单 + 搜索 + 按钮挤到换行 */
@media(max-width:1240px){
  .navwrap{gap:16px}
  .mainnav a{padding:12px 9px;font-size:.9rem}
  .navsearch input{width:110px}
  .nav-actions .btn-sm{padding:.5em .85em;font-size:.83rem}
}
@media(max-width:1120px){
  .navsearch{display:none}
}
@media(max-width:1024px){
  .hero .wrap{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(4,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  h1{font-size:1.7rem}.hero h1{font-size:1.9rem}
  .menu-btn{display:block}
  .nav-actions{display:none}
  .mainnav{position:fixed;top:0;left:0;bottom:0;width:280px;z-index:1200;background:#fff;padding:70px 0 20px;box-shadow:4px 0 24px rgba(0,0,0,.14);transform:translateX(-100%);transition:.24s;overflow-y:auto;margin:0;-webkit-overflow-scrolling:touch}
  .mainnav.open{transform:none}
  .mainnav>ul{flex-direction:column;gap:0}
  .mainnav a{padding:14px 22px;border-bottom:1px solid var(--line)}
  .mainnav a.on::after{display:none}
  .has-sub .sub{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;padding:0;margin:0;display:block!important;background:#f7f9fc}
  .has-sub.open .sub{display:block}
  .has-sub>ul.sub>li:last-child{border-bottom:1px solid var(--line)}
  .mainnav .sub a{padding:12px 22px 12px 34px;font-weight:500;font-size:.92rem;color:var(--ink2);border-bottom:0;position:relative}
  .mainnav .sub a::before{content:"";position:absolute;left:22px;top:50%;width:5px;height:5px;border-radius:50%;background:var(--brand);opacity:.45;transform:translateY(-50%)}
  .mainnav .sub a:hover,.mainnav .sub a:active{background:var(--brand-l);color:var(--brand)}
  .has-sub .caret{display:none}
  .pd,.contact-grid{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .form-2{grid-template-columns:1fr}
  .topbar .tb-right{display:none}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .section{padding:42px 0}
  .float-contact{bottom:16px}
  .mainnav .m-search,.m-search{display:flex!important;margin:0 18px 14px;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}
  .m-search input{flex:1;border:0;outline:none;padding:11px 12px;font-size:.92rem;background:#fff;color:inherit}
  .m-search button{border:0;background:var(--brand);color:#fff;padding:0 18px;font-weight:700;font-size:.88rem}
  .mainnav .m-quote,.m-quote{display:block!important;margin:16px 18px 0;padding:13px;text-align:center;background:var(--brand);color:#fff;border-radius:8px;font-weight:700}
  .m-quote:hover{color:#fff;opacity:.92}
  .nav-mask.on{display:block}
}
/* 移动端抽屉专用元素：仅在桌面隐藏（.mainnav a 会设 display:block，故需提权 + 限定最小宽度） */
@media(min-width:861px){
  .mainnav .m-search,.mainnav .m-quote,.m-search,.m-quote{display:none!important}
}
.nav-mask{display:none;position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:1100}

/* ---------- 询盘类型 ---------- */
.inq-types{display:flex;gap:8px;margin:0 0 14px;flex-wrap:wrap}
.inq-type{flex:1 1 0;min-width:150px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 12px;cursor:pointer;text-align:left;transition:.18s;font-family:inherit}
.inq-type b{display:block;font-size:.92rem;color:var(--ink)}
.inq-type span{display:block;font-size:.78rem;color:var(--ink3);margin-top:2px}
.inq-type:hover{border-color:#cfdcec}
.inq-type.on{border-color:var(--brand);background:var(--brand-l);box-shadow:0 0 0 1px var(--brand) inset}
.inq-type.on b{color:var(--brand)}
.inq-extra{margin:2px 0 6px;padding:12px 14px;background:var(--bg2);border:1px dashed var(--line);border-radius:10px}
.inq-extra .hint{font-size:.78rem;color:var(--ink3);margin-top:6px}

/* ---------- 产品筛选 ---------- */
.p-filter{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px}
.p-filter .chip{background:#fff;border:1px solid var(--line);border-radius:20px;padding:7px 14px;font-size:.86rem;font-weight:600;color:var(--ink2);cursor:pointer;font-family:inherit;transition:.18s}
.p-filter .chip:hover{border-color:var(--brand);color:var(--brand)}
.p-filter .chip.on{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- 骨架屏 ---------- */
.sk{background:linear-gradient(90deg,#eef2f7 25%,#e2e9f2 37%,#eef2f7 63%);background-size:400% 100%;animation:sk 1.3s ease infinite;border-radius:6px}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}
.sk-card{pointer-events:none}
.sk-thumb{width:100%;aspect-ratio:1/1;border-radius:0}
.sk-line{height:13px;margin:8px 0}
.sk-btn{height:32px;width:100%;margin-top:12px}

/* ---------- 404 ---------- */
.nf{padding:60px 20px 70px;text-align:center}
.nf-code{font-size:5rem;font-weight:800;color:var(--brand);line-height:1;letter-spacing:-2px;opacity:.85}
.nf h1{margin:.3em 0 .2em;font-size:1.5rem}
.nf-sub{color:var(--ink2);margin:0 auto 22px;max-width:620px}
.nf-search{display:flex;gap:8px;max-width:520px;margin:0 auto 22px}
.nf-search input{flex:1;border:1px solid var(--line);border-radius:8px;padding:11px 14px;font-size:.95rem}
.nf-search button{background:var(--brand);color:#fff;border:0;border-radius:8px;padding:0 22px;font-weight:700;cursor:pointer}
.nf-cats{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:34px}
.nf-cats a{background:#fff;border:1px solid var(--line);border-radius:20px;padding:6px 14px;font-size:.85rem;color:var(--ink2)}
.nf-cats a:hover{border-color:var(--brand);color:var(--brand)}
.nf-h2{font-size:1.15rem;margin:0 0 16px}
.nf .p-grid{text-align:left}
@media(max-width:600px){.nf-search{flex-direction:column}.nf-code{font-size:3.6rem}}