:root{
  --primary:#1b5fc4;--primary-d:#15499b;--accent:#ff6a00;--accent-d:#e25e00;
  --bg:#f5f7fa;--card:#ffffff;--text:#333;--muted:#888;--line:#e6e9ef;--radius:6px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Microsoft YaHei","PingFang SC",-apple-system,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;font-size:14px}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--accent)}
img{max-width:100%}
.container{width:1180px;max-width:94%;margin:0 auto}
.btn{display:inline-block;padding:10px 22px;border-radius:var(--radius);font-size:15px;cursor:pointer;border:none;transition:.2s}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-d);color:#fff}
.btn-accent{background:var(--accent);color:#fff}.btn-accent:hover{background:var(--accent-d);color:#fff}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.7)}.btn-ghost:hover{background:rgba(255,255,255,.15);color:#fff}
.btn-lg{padding:13px 30px;font-size:16px}
.btn-block{display:block;width:100%;text-align:center}
.section{padding:46px 0}
.sec-head{text-align:center;margin-bottom:30px}
.sec-head h2{font-size:26px;color:var(--primary-d);position:relative;display:inline-block;padding-bottom:10px}
.sec-head h2:after{content:"";position:absolute;left:50%;bottom:0;width:54px;height:3px;background:var(--accent);transform:translateX(-50%)}
.sec-head p{color:var(--muted);margin-top:10px;font-size:14px}
.more-btn{margin:24px auto 0;display:table}

/* topbar */
.topbar{background:var(--primary-d);color:#fff;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a{color:#fff}.topbar .hotline{font-weight:bold}
.topbar-right a{margin:0 4px}
.topbar-right .sep{opacity:.5}
.topbar .welcome{margin-right:8px}

/* header */
.site-header{background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.header-inner{display:flex;align-items:center;gap:24px;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{background:var(--primary);color:#fff;width:42px;height:42px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:bold;font-size:16px}
.brand-name{font-size:22px;font-weight:bold;color:var(--primary-d)}
.header-search{flex:1;max-width:460px;display:flex;border:2px solid var(--primary);border-radius:30px;overflow:hidden}
.header-search input{flex:1;border:none;padding:9px 16px;outline:none;font-size:14px}
.header-search button{background:var(--primary);color:#fff;border:none;padding:0 26px;cursor:pointer;font-size:15px}
.header-search button:hover{background:var(--primary-d)}
.menu-btn{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer}
.menu-btn span{width:24px;height:3px;background:var(--primary);border-radius:2px}
.main-nav{background:var(--primary);border-top:1px solid rgba(255,255,255,.15)}
.main-nav .container{display:flex;gap:0}
.main-nav a{color:#fff;padding:13px 22px;font-size:15px;display:block}
.main-nav a:hover{background:var(--primary-d);color:#fff}

/* hero */
.hero{background:linear-gradient(120deg,var(--primary) 0%,#2b7de0 100%);color:#fff;padding:54px 0}
.hero-cols{display:flex;gap:36px;align-items:center}
.hero-left{flex:1}
.hero-title{font-size:34px;font-weight:bold;line-height:1.35;margin-bottom:16px}
.hero-sub{font-size:16px;opacity:.95;margin-bottom:24px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-card{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);border-radius:14px;padding:26px;width:320px;backdrop-filter:blur(4px)}
.hero-card h3{font-size:20px;margin-bottom:8px}
.hero-card p{opacity:.95;margin-bottom:16px}
.hero-card-tip{margin-top:14px;font-size:13px;opacity:.9}
.hero-card-tip a{color:#fff;text-decoration:underline}

/* service grid */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.svc-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 18px;text-align:center;transition:.2s}
.svc-item:hover{transform:translateY(-4px);box-shadow:0 8px 20px rgba(27,95,196,.12);border-color:var(--primary)}
.svc-ico{width:54px;height:54px;margin:0 auto 12px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:bold}
.svc-item h3{font-size:17px;margin-bottom:8px;color:var(--text)}
.svc-item p{color:var(--muted);font-size:13px}

/* price */
.price-cardwrap{overflow-x:auto}
.price-table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden}
.price-table th,.price-table td{border:1px solid var(--line);padding:10px 12px;text-align:center;font-size:13px}
.price-table th{background:var(--primary);color:#fff}
.price-table tr:nth-child(even){background:#fafbfe}
.price-table .up{color:#e4393c}.price-table .down{color:#1a9e3e}.price-table .flat{color:var(--muted)}
.price-analysis{color:var(--muted);margin:14px 0;font-size:13px}

/* product */
.prod-list.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.prod-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;transition:.2s}
.prod-item:hover{box-shadow:0 6px 18px rgba(0,0,0,.08)}
.prod-item h3{font-size:16px;margin-bottom:8px}
.prod-item .price{color:var(--accent);font-weight:bold}

/* flow */
.flow-list{display:flex;gap:14px;list-style:none;flex-wrap:wrap;justify-content:center}
.flow-list li{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 26px;position:relative;font-size:15px}
.flow-list li span{display:block;color:var(--accent);font-size:22px;font-weight:bold;margin-bottom:6px}

/* case */
.case-list.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;transition:.2s}
.case-item:hover{box-shadow:0 6px 18px rgba(0,0,0,.08)}
.case-item h3{font-size:16px}

/* region */
.region-grid{display:flex;flex-wrap:wrap;gap:10px}
.region-links a{display:inline-block;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:6px 16px;color:var(--text);font-size:13px}
.region-links a:hover{border-color:var(--primary);color:var(--primary)}

/* news */
.news-list.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.news-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;transition:.2s}
.news-item:hover{box-shadow:0 6px 18px rgba(0,0,0,.08)}
.news-item h3{font-size:16px;margin-bottom:8px;color:var(--text)}
.news-item p{color:var(--muted);font-size:13px}
.empty-tip{color:var(--muted);padding:20px;text-align:center;background:var(--card);border:1px dashed var(--line);border-radius:var(--radius)}

/* faq */
.faq-list.faq-twocol,.faq-list.faq-page{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.faq-q{font-size:15px;color:var(--primary-d);margin-bottom:6px}
.faq-a{color:#555;font-size:14px}

/* inquiry */
.inquiry-form{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:grid;grid-template-columns:1fr 1fr;gap:14px;max-width:760px;margin:0 auto}
.inquiry-form input,.inquiry-form select,.inquiry-form textarea{padding:11px 14px;border:1px solid var(--line);border-radius:var(--radius);font-size:14px;outline:none;font-family:inherit}
.inquiry-form textarea{grid-column:1/3;resize:vertical;min-height:80px}
.inquiry-form button{grid-column:1/3;justify-self:center;min-width:200px}
.inquiry-form .hp-field{display:none}
.sub-title{font-size:20px;color:var(--primary-d);margin:26px 0 12px}

/* footer */
.site-footer{background:#26313f;color:#c7cedb;margin-top:40px;padding:40px 0 0}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1.4fr;gap:30px}
.footer-col h4{color:#fff;margin-bottom:14px;font-size:16px}
.footer-col a{display:block;color:#c7cedb;margin-bottom:8px;font-size:13px}
.footer-col a:hover{color:var(--accent)}
.footer-col .f-company{color:#fff;font-weight:bold;margin-bottom:10px}
.footer-col p{font-size:13px;margin-bottom:6px}
.f-regions a{display:inline-block;margin:0 8px 8px 0;color:#c7cedb}
.copyright{background:#1d2632;color:#8a93a3;font-size:13px;text-align:center;padding:16px 0;margin-top:30px}

/* mobile fixbar */
.m-fixbar{display:none;position:fixed;bottom:0;left:0;right:0;background:var(--primary);z-index:50}
.m-fixbar a{flex:1;text-align:center;color:#fff;padding:12px 0;font-size:15px}
.backtop{position:fixed;right:18px;bottom:70px;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:20px;cursor:pointer;display:none;z-index:50}

/* page-main */
.page-main{padding:34px 0;min-height:50vh}
.page-title{font-size:26px;color:var(--primary-d);margin-bottom:18px}
.breadcrumb{padding:12px 0;color:var(--muted);font-size:13px}
.breadcrumb a{color:var(--muted)}
.breadcrumb .sep{margin:0 8px;color:#bbb}
.article{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.article-title{font-size:24px;margin-bottom:10px}
.article-meta{color:var(--muted);font-size:13px;margin-bottom:16px;border-bottom:1px solid var(--line);padding-bottom:12px}
.article-content{font-size:15px;line-height:1.9}
.article-content img{max-width:100%}
.article-tags{margin-top:18px}
.article-tags .tag{display:inline-block;background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:4px 12px;margin:0 6px 6px 0;font-size:13px;color:#555}
.article-nav{display:flex;justify-content:space-between;margin-top:20px;font-size:13px;color:var(--muted)}
.related{margin-top:24px}
.related h3{font-size:17px;margin-bottom:12px;color:var(--primary-d)}
.related .news-item,.related .prod-item{margin-bottom:10px}

/* search */
.search-form{display:flex;gap:10px;margin-bottom:22px;max-width:560px}
.search-form input{flex:1;border:2px solid var(--primary);border-radius:var(--radius);padding:10px 14px;outline:none}
.search-form button{padding:0 26px}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}
.contact-info p{margin-bottom:12px;font-size:15px}
.contact-info strong{color:var(--primary-d)}

/* about */
.about-content{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;font-size:15px;line-height:1.9}

/* auth */
.container.narrow{max-width:460px}
.auth-card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:34px;margin:20px auto;box-shadow:0 8px 24px rgba(0,0,0,.06)}
.auth-title{font-size:24px;color:var(--primary-d);text-align:center;margin-bottom:24px}
.auth-form input{padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);font-size:14px;outline:none;width:100%;margin-bottom:14px}
.auth-form input:focus{border-color:var(--primary)}
.auth-row{display:flex;justify-content:space-between;align-items:center;font-size:13px;margin-bottom:14px;color:#555}
.auth-row a{color:var(--primary)}
.auth-msg{color:#e4393c;font-size:13px;text-align:center;min-height:18px}
.auth-tip{color:var(--muted);font-size:12px;text-align:center;margin-top:10px}
.pagination{margin-top:20px;text-align:center}
.pagination a,.pagination .cur{display:inline-block;padding:6px 12px;margin:0 3px;border:1px solid var(--line);border-radius:4px;color:var(--text)}
.pagination .cur{background:var(--primary);color:#fff;border-color:var(--primary)}

/* responsive */
@media(max-width:980px){
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .prod-list.grid-4,.case-list.case-grid{grid-template-columns:repeat(2,1fr)}
  .news-list.news-grid,.faq-list.faq-twocol,.faq-list.faq-page{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .hero-cols{flex-direction:column}.hero-card{width:100%}
  .header-search{order:3;max-width:none;flex-basis:100%}
  .menu-btn{display:flex}
  .main-nav{display:none}.main-nav.open{display:block}
  .main-nav .container{flex-direction:column}.main-nav a{padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.1)}
  .inquiry-form{grid-template-columns:1fr}.inquiry-form textarea,.inquiry-form button{grid-column:auto}
}