/* ================= 基础 ================= */
:root{
  --primary:#0b5aa7;
  --primary-dark:#08417c;
  --primary-deep:#06305c;
  --accent:#f5a623;
  --accent-dark:#e08e0e;
  --text:#233a52;
  --muted:#5f7489;
  --line:#e2eaf4;
  --bg:#f5f8fc;
  --white:#ffffff;
  --radius:12px;
  --shadow:0 10px 28px rgba(6,48,92,.10);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.4;color:var(--primary-deep)}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted);font-size:14px}
.empty{text-align:center;color:var(--muted);padding:40px 0}

/* ================= 顶栏 / 头部 ================= */
#topbar{background:var(--primary-deep);color:#cfe2f5;font-size:13px}
.topbar-in{display:flex;justify-content:space-between;align-items:center;height:36px}
.header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100}
.header-in{display:flex;justify-content:space-between;align-items:center;height:72px}
.logo{display:flex;align-items:center;gap:12px}
.logo-ic{width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;letter-spacing:.5px}
.logo-tx{display:flex;flex-direction:column}
.logo-tx b{font-size:19px;color:var(--primary-deep)}
.logo-tx i{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.5px}
.nav{display:flex;gap:8px}
.nav a{padding:8px 16px;border-radius:8px;color:var(--text);font-weight:600}
.nav a:hover{color:var(--primary);background:#eef5fc}
.nav a.on{color:#fff;background:var(--primary)}

/* ================= 按钮 ================= */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:12px 26px;border-radius:8px;font-weight:700;font-size:15px;cursor:pointer;border:none;transition:all .2s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.22)}

/* ================= 首页首屏 ================= */
.hero{background:linear-gradient(135deg,#0a4f9e 0%,#06305c 100%);color:#fff;padding:70px 0 80px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.08),transparent 70%)}
.hero-in{display:flex;align-items:center;gap:48px;position:relative;z-index:1}
.hero-tx{flex:1.2}
.hero h1{color:#fff;font-size:40px;margin-bottom:14px}
.hero-sub{color:#d7e6f7;font-size:17px;margin-bottom:26px}
.hero-btns{display:flex;gap:14px;margin-bottom:26px;flex-wrap:wrap}
.hero-tags{display:flex;gap:12px;flex-wrap:wrap}
.hero-tags span{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);padding:6px 14px;border-radius:20px;font-size:13px;color:#eaf3fd}
.hero-art{flex:1;position:relative;height:320px}
.art-card{position:absolute;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.28);border-radius:14px;padding:16px 22px;color:#fff;font-weight:700;box-shadow:0 12px 30px rgba(0,0,0,.18)}
.art-c1{top:20px;left:0}
.art-c2{top:115px;right:0}
.art-c3{top:205px;left:40px}
.art-c4{top:10px;right:70px}

/* ================= 通用区块 ================= */
.section{padding:64px 0}
.sec-gray{background:#fff}
.sec-head{text-align:center;margin-bottom:38px}
.sec-head.left{text-align:left}
.sec-head h2{font-size:30px;position:relative;display:inline-block;padding-bottom:12px}
.sec-head h2::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:56px;height:4px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--primary))}
.sec-head.left h2::after{left:0;transform:none}
.sec-head p{color:var(--muted);margin-top:12px}
.sec-more{text-align:center;margin-top:34px}

/* ================= 分类卡片 ================= */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.ccard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 22px;text-align:center;transition:all .25s;box-shadow:0 2px 8px rgba(6,48,92,.04)}
.ccard:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--primary)}
.ccard-ic{font-size:42px;display:block;margin-bottom:14px}
.ccard h3{font-size:19px;margin-bottom:8px}
.ccard p{color:var(--muted);font-size:14px;margin-bottom:14px;min-height:52px}
.more{color:var(--primary);font-weight:700;font-size:14px}

/* ================= 产品卡片 ================= */
.p-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:all .25s;display:flex;flex-direction:column}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--primary)}
.pcard-img{height:190px;background:#eef4fb;overflow:hidden}
.pcard-img img{width:100%;height:100%;object-fit:cover}
.ph{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;gap:8px}
.ph-ic{font-size:44px}
.ph-tx{font-size:12px;color:#cfe2f5;background:rgba(255,255,255,.15);padding:3px 12px;border-radius:12px}
.pcard-body{padding:16px 18px 20px;flex:1;display:flex;flex-direction:column}
.tag{display:inline-block;background:#e8f1fc;color:var(--primary);font-size:12px;padding:2px 10px;border-radius:12px;margin-bottom:10px;align-self:flex-start}
.pcard-body h3{font-size:17px;margin-bottom:6px}
.pcard-body p{color:var(--muted);font-size:13px;flex:1;margin-bottom:12px}

/* ================= 关于我们 ================= */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.about-tx p{color:var(--text);font-size:15px}
.about-list{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.adv{border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:#fff}
.adv b{display:block;color:var(--primary-deep);font-size:16px;margin-bottom:6px}
.adv span{font-size:13px;color:var(--muted)}

/* ================= CTA / 页脚 ================= */
.cta{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-deep) 100%);color:#fff;padding:56px 0;text-align:center}
.cta h2{color:#fff;font-size:28px;margin-bottom:8px}
.cta p{color:#d7e6f7;margin-bottom:24px}
.cta .hero-btns{justify-content:center}
#site-footer{background:var(--primary-deep);color:#c9ddf2;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.4fr;gap:40px;padding:48px 0 36px}
.f-col h4{color:#fff;font-size:16px;margin-bottom:14px}
.f-col p{color:#b9cfe6;font-size:13px}
.f-col li{padding:4px 0}
.f-col a:hover{color:var(--accent)}
.f-bar{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;font-size:13px;color:#9db9d6;text-align:center}

/* ================= 内页 ================= */
.page-banner{background:linear-gradient(135deg,#0a4f9e 0%,#06305c 100%);color:#fff;padding:44px 0}
.page-banner h1{color:#fff;font-size:30px}
.crumb{color:#c9ddf2;font-size:13px;margin-top:6px}
.crumb a:hover{color:var(--accent)}
.chips{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.chip{padding:8px 20px;border-radius:20px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:14px;color:var(--text);transition:all .2s}
.chip:hover{border-color:var(--primary);color:var(--primary)}
.chip.on{background:var(--primary);color:#fff;border-color:var(--primary)}
.list-title{font-size:20px;margin-bottom:20px}

/* ================= 产品详情 ================= */
.detail-top{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;margin-bottom:40px}
.detail-img{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;height:420px;background:#eef4fb}
.detail-img img{width:100%;height:100%;object-fit:cover}
.detail-info h2{font-size:26px;margin-bottom:10px}
.detail-info .brief{color:var(--muted);margin-bottom:18px}
.spec-table{width:100%;border-collapse:collapse;margin-bottom:22px;background:#fff}
.spec-table th,.spec-table td{border:1px solid var(--line);padding:10px 14px;font-size:14px;text-align:left}
.spec-table th{background:#eef5fc;color:var(--primary-dark);width:150px;white-space:nowrap}
.detail-cta{display:flex;gap:14px;flex-wrap:wrap}
.detail-desc{margin-bottom:40px}
.detail-desc h3{font-size:20px;margin-bottom:12px}
.detail-related h3{font-size:20px;margin-bottom:20px}

/* ================= 联系页 ================= */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-bottom:28px}
.contact-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.ccard-info{border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:#fff}
.ccard-info .ic{font-size:30px;display:block;margin-bottom:10px}
.ccard-info b{display:block;font-size:15px;margin-bottom:4px;color:var(--primary-deep)}
.ccard-info span{font-size:14px;color:var(--muted)}
.ccard-info a{color:var(--primary);font-weight:700}
.card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:26px}
.card h3{font-size:19px;margin-bottom:12px}
form label{display:block;margin-bottom:14px;font-size:14px;color:var(--muted)}
form input,form textarea,form select{width:100%;margin-top:6px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;font-size:14px;font-family:inherit;background:#fbfdff;color:var(--text)}
form input:focus,form textarea:focus,form select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(11,90,167,.12)}
.msg-result{margin-top:14px;padding:12px 16px;border-radius:8px;font-size:14px;display:none}
.msg-result.ok{display:block;background:#e8f7ee;color:#1f7a45;border:1px solid #bfe6cf}
.map-box .map-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.map-box .map-head a{color:var(--primary);font-size:14px}
.map-ph{border:1px dashed var(--line);border-radius:10px;background:#fbfdff;padding:40px;text-align:center;color:var(--primary-deep);font-size:16px}
.map-ph span{font-size:34px;display:block;margin-bottom:8px}

/* ================= 响应式 ================= */
@media (max-width:960px){
  .hero-in{flex-direction:column}
  .hero-art{display:none}
  .cat-grid,.p-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid,.contact-grid,.detail-top{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .contact-cards{grid-template-columns:1fr}
}
@media (max-width:560px){
  .cat-grid,.p-grid{grid-template-columns:1fr}
  .nav{display:none}
  .hero h1{font-size:30px}
}

/* ================= 主营品牌 ================= */
.brand-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.brand-chip{background:#fff;border:1px solid var(--line);border-radius:24px;padding:10px 24px;font-size:15px;font-weight:700;color:var(--primary-dark);box-shadow:0 2px 8px rgba(6,48,92,.05);transition:all .2s}
.brand-chip:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
@media (max-width:560px){ .brand-chip{font-size:13px;padding:8px 16px} }

/* ================= 海外代购页 ================= */
.ov-intro{font-size:15px;line-height:2}
.ov-intro b{color:var(--primary)}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 14px;text-align:center;position:relative}
.step b{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;font-size:17px;margin-bottom:10px}
.step span{font-size:14px;color:var(--text);font-weight:700}
.step i{font-style:normal;color:var(--muted);font-weight:400;font-size:12px}
@media (max-width:760px){ .steps{grid-template-columns:1fr 1fr} }

/* ================= Logo 图片 ================= */
.logo-img{height:46px;width:auto;object-fit:contain}
@media (max-width:560px){ .logo-img{height:38px} }

/* ================= 分类卡片图片 ================= */
.ccard-img{display:block;height:130px;border-radius:10px;overflow:hidden;margin-bottom:14px;background:#eef4fb}
.ccard-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.ccard:hover .ccard-img img{transform:scale(1.05)}


/* ================= 公告中心 / 技术分享 ================= */
.news-list{display:flex;flex-direction:column;gap:14px}
.nrow{display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;transition:all .25s;box-shadow:0 2px 8px rgba(6,48,92,.04)}
.nrow:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--primary)}
.nrow-date{flex-shrink:0;width:64px;text-align:center;background:#eef5fc;border-radius:10px;padding:8px 0;color:var(--primary-dark)}
.nrow-date b{display:block;font-size:20px;line-height:1.2}
.nrow-date i{font-style:normal;font-size:12px;color:var(--muted)}
.nrow-main{flex:1;min-width:0}
.nrow-main b{display:block;font-size:16px;color:var(--primary-deep);margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nrow-main span{display:block;font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nrow-more{flex-shrink:0;color:var(--primary);font-weight:700;font-size:14px}
.tag.hot{background:#fde8e8;color:#d9534f}
.acard .ameta{display:block;font-size:12px;color:var(--muted);margin-top:auto;padding-top:8px;border-top:1px dashed var(--line)}

/* ================= 文章 / 公告详情 ================= */
.doc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px 40px;box-shadow:0 2px 8px rgba(6,48,92,.04)}
.doc-head{border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:22px}
.doc-head h1{font-size:26px;color:var(--primary-deep);margin-bottom:10px}
.doc-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.doc-meta .tag{background:#e8f1fc;color:var(--primary);margin-bottom:0}
.doc-cover{height:300px;border-radius:10px;overflow:hidden;background:#eef4fb;margin-bottom:24px}
.doc-cover img{width:100%;height:100%;object-fit:cover}
.doc-body{font-size:15px;line-height:2;color:var(--text)}
.doc-body p{margin-bottom:16px}
.doc-back{margin-top:30px}
@media (max-width:640px){
  .nrow{flex-wrap:wrap;gap:10px}
  .nrow-more{display:none}
  .nrow-main b,.nrow-main span{white-space:normal}
  .doc{padding:22px 18px}
  .doc-head h1{font-size:21px}
  .doc-cover{height:190px}
}


/* ================= 富文本正文排版 ================= */
.doc-body h2,.detail-desc h2{font-size:22px;margin:24px 0 10px;color:var(--primary-deep)}
.doc-body h3,.detail-desc h3{font-size:18px;margin:18px 0 8px;color:var(--primary-deep)}
.doc-body ul,.doc-body ol,.detail-desc ul,.detail-desc ol{padding-left:24px;margin:0 0 16px}
.doc-body li,.detail-desc li{margin:4px 0}
.doc-body img,.detail-desc img{max-width:100%;border-radius:8px;margin:8px 0}
.doc-body blockquote,.detail-desc blockquote{border-left:3px solid var(--primary);background:#f2f7fd;padding:10px 14px;margin:0 0 16px;color:var(--muted)}
.doc-body a,.detail-desc a{color:var(--primary);text-decoration:underline}
.doc-body p,.detail-desc p{margin-bottom:16px}
.doc-pdf{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:20px 0;padding:16px 18px;border:1px dashed var(--line);border-radius:10px;background:#fbfdff}
.doc-pdf .btn{margin:0}