:root{
  --bg:#ffffff; --bg2:#ffffff; --card:#ffffff; --line:#e5e5e5;
  --txt:#000000; --mut:#333333; --acc:#000000; --acc2:#000000; --warn:#000000;
  --r:14px; --max:1440px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;background:#ffffff;color:#000;line-height:1.65}
[dir="rtl"] body{direction:rtl}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
section{padding:72px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 44px}
.sec-head h2{font-size:clamp(26px,4vw,38px);letter-spacing:.5px;color:#000}
.sec-head h2 span{color:#000}
.sec-head p{color:#333;margin-top:10px}
/* header */
header{position:sticky;top:0;z-index:50;background:#ffffff;border-bottom:1px solid #e5e5e5}
.hd{display:flex;align-items:center;gap:18px;height:64px}
.logo{font-size:24px;font-weight:800;letter-spacing:1px;color:#152a44}
.logo b{color:#0f7bff} .logo small{font-size:11px;color:#00a88f;display:block;line-height:1;letter-spacing:3px}
nav.main{display:flex;gap:4px;margin-inline-start:auto;align-items:center}
nav.main a{padding:8px 13px;border-radius:9px;font-size:14.5px;color:#000}
nav.main a:hover,nav.main a.on{background:#f0f0f0;color:#000}
.has-drop{position:relative}
.has-drop>a::after{content:" ▾";font-size:11px;color:#000}
.drop{position:absolute;top:calc(100% + 8px);inset-inline-start:50%;transform:translateX(-50%) translateY(6px);min-width:280px;max-width:340px;background:#ffffff;border:1px solid #e5e5e5;border-radius:12px;padding:8px;opacity:0;visibility:hidden;transition:.18s;box-shadow:0 10px 30px rgba(0,0,0,.08);z-index:80}
[dir="rtl"] .drop{transform:translateX(50%) translateY(6px)}
.has-drop:hover .drop,.has-drop:focus-within .drop,.has-drop.keep .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
[dir="rtl"] .has-drop:hover .drop,[dir="rtl"] .has-drop:focus-within .drop,[dir="rtl"] .has-drop.keep .drop{transform:translateX(50%) translateY(0)}
.drop a{display:flex;gap:10px;align-items:center;padding:9px 12px;border-radius:8px;font-size:13.5px;color:#000;white-space:normal;line-height:1.4}
.drop a:hover{background:#f5f5f5;color:#000}
.drop a .di{font-size:18px;flex:none}
.drop a small{display:block;color:#333;font-size:11.5px}
.drop.sm{min-width:230px}
/* 产品中心 mega menu：整行大面板，多分类自动换行 */
.has-drop:has(> .drop.wide){position:static}
.drop.wide{top:100%;inset-inline-start:12px;inset-inline-end:12px;left:12px;right:12px;transform:translateY(6px);width:auto;min-width:0;max-width:none;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px 22px;padding:22px 28px;cursor:default}
[dir="rtl"] .drop.wide{transform:translateY(6px)}
.has-drop:hover .drop.wide,.has-drop:focus-within .drop.wide,.has-drop.keep .drop.wide{transform:translateY(0)}
[dir="rtl"] .has-drop:hover .drop.wide,[dir="rtl"] .has-drop:focus-within .drop.wide,[dir="rtl"] .has-drop.keep .drop.wide{transform:translateY(0)}
.drop.wide .dg-col{min-width:0;border:0;padding:0}
.drop.wide .dg-t{font-size:13.5px;font-weight:800;color:#000;letter-spacing:.3px;padding:0 0 8px;margin-bottom:6px;border-bottom:1px solid #e5e5e5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.drop.wide a{display:block;padding:5px 0;font-size:13px;color:#333;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.5}
.drop.wide a:hover{background:none;color:#000;text-decoration:underline}
.langsel{display:flex;align-items:center;gap:8px}
.langsel select{background:#ffffff;color:#000;border:1px solid #ddd;border-radius:9px;padding:8px 10px;font-size:14px;max-width:150px}
.btn{display:inline-block;background:#0f6bff;color:#fff;border:1px solid #0f6bff;border-radius:10px;padding:12px 26px;font-size:15px;cursor:pointer;font-weight:600}
.btn:hover{background:#0a54c9;border-color:#0a54c9}
.btn.ghost{background:#fff;border:1px solid #0f6bff;color:#0f6bff}
.btn.sm{padding:8px 16px;font-size:13.5px}
.burger{display:none;background:none;border:1px solid #ddd;color:#000;border-radius:8px;padding:7px 11px;font-size:18px;cursor:pointer}
/* hero */
.hero{position:relative;overflow:hidden;background:#ffffff;border-bottom:1px solid #eee}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;padding:84px 20px 70px}
/* 居中全宽首屏：不裁剪、自动换行 */
.hero-center{overflow:visible}
.hero-center .wrap{display:block;padding:96px 20px 80px;max-width:var(--max)}
.hero-center .hero-inner{max-width:100%;margin:0;text-align:left}
.hero-center h1{max-width:100%;overflow:visible;white-space:normal;overflow-wrap:anywhere;word-break:normal;font-size:clamp(32px,4.6vw,56px);line-height:1.28;letter-spacing:.5px;color:#000}
.hero-center p.sub{max-width:100%;overflow:visible;white-space:normal;overflow-wrap:anywhere;word-break:normal;font-size:17px;color:#333}
.hero-center .stats{max-width:1000px}
.badge{display:inline-block;border:1px solid #000;color:#000;border-radius:99px;padding:5px 16px;font-size:13px;margin-bottom:18px;background:#fff}
.hero h1{font-size:clamp(30px,4.6vw,52px);line-height:1.25;margin-bottom:16px;color:#000}
.hero h1 span{color:#000}
.hero p.sub{color:#333;font-size:16.5px;margin-bottom:28px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-art{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.tile{border:1px solid #e5e5e5;border-radius:var(--r);padding:26px 20px;background:#ffffff;text-align:center}
.tile .ic{font-size:34px}
.tile h4{margin:10px 0 4px;font-size:16px;color:#000}.tile p{font-size:12.5px;color:#333}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}
.stat{background:#ffffff;border:1px solid #e5e5e5;border-radius:var(--r);padding:16px;text-align:center}
.stat b{font-size:26px;color:#000} .stat span{display:block;font-size:12.5px;color:#333}
/* filter + cards */
.filters{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:32px}
.filters button{background:#fff;border:1px solid #ddd;color:#000;border-radius:99px;padding:8px 20px;cursor:pointer;font-size:14px}
.filters button.on{background:#000;color:#fff;border-color:#000}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:26px}
.card{background:#fff;border:1px solid #eee;border-radius:10px;overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:none;border-color:#ddd;box-shadow:none}
.card:hover .ph img{transform:scale(1.05)}
.ph{height:220px;display:flex;align-items:center;justify-content:center;font-size:52px;background:#f5f5f5;border-radius:0;overflow:hidden;color:#000}
.ph img{width:100%;height:100%;object-fit:cover;transition:.35s}
.card .bd{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1;text-align:center}
.tag{align-self:center;font-size:11.5px;background:none;color:#666;border-radius:0;padding:0;letter-spacing:1px;text-transform:uppercase}
.card h3{font-size:19px;font-weight:700;color:#000}
.card h3 a:hover{color:#000;text-decoration:underline}
.card p{font-size:13.5px;color:#333;flex:1}
.card .row{display:flex;gap:10px;margin-top:6px;justify-content:center}
.more{color:#000;font-size:14px;font-weight:600}
.more:hover{text-decoration:underline}
/* solutions */
.sol-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:26px}
.eyebrow{font-size:15px;font-weight:800;letter-spacing:3px;color:#000;margin-bottom:10px;text-transform:uppercase}
.sol{background:#fff;border:1px solid #eee;border-radius:10px;overflow:hidden;transition:.25s}
.sol:hover{border-color:#ddd}
.sol .ph{height:230px;font-size:60px;border-radius:0}
.sol .bd{padding:16px 16px 18px;text-align:center}
.sol h3{font-size:20px;font-weight:700;margin-bottom:8px;color:#000}
.sol h3 a:hover{color:#000;text-decoration:underline}
.sol p{font-size:14px;color:#333;margin-bottom:12px}
.sol ul{list-style:none;margin:0 0 14px;text-align:left}
.sol ul li{font-size:13.5px;color:#333;padding-inline-start:22px;position:relative;margin-bottom:5px}
.sol ul li::before{content:"✓";position:absolute;inset-inline-start:0;color:#000}
/* control strip */
.strip{background:#fafafa;border-block:1px solid #e5e5e5}
.ctl4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:36px}
.ctl{background:#ffffff;box-shadow:none;border:1px solid #e5e5e5;border-radius:var(--r);padding:24px 18px;text-align:center}
.ctl .ic{font-size:36px}.ctl h4{margin:10px 0 6px;color:#000}.ctl p{font-size:13px;color:#333}
.oss{display:flex;gap:12px;justify-content:center;margin-top:30px;flex-wrap:wrap}
.oss span{border:1px solid #e5e5e5;border-radius:10px;padding:10px 22px;background:#ffffff;font-size:14px;color:#000}
/* cases / support / news */
.cases{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.case{background:#fff;border:1px solid #e5e5e5;border-radius:var(--r);padding:24px}
.case p{font-size:14px;color:#000;font-style:italic}
.case b{display:block;margin-top:12px;color:#000;font-size:13.5px}
.sup3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.sup{background:#fff;border:1px solid #e5e5e5;border-radius:var(--r);padding:28px 22px;text-align:center}
.sup .ic{font-size:38px}.sup h4{margin:12px 0 6px;color:#000}.sup p{font-size:13.5px;color:#333}
.faq{max-width:800px;margin:34px auto 0}
.faq details{background:#fff;border:1px solid #e5e5e5;border-radius:10px;margin-bottom:10px;padding:14px 18px}
.faq summary{cursor:pointer;font-weight:600;font-size:15px;color:#000}
.faq p{color:#333;font-size:14px;margin-top:8px}
.news{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.nw{background:#fff;border:1px solid #e5e5e5;border-radius:var(--r);padding:22px}
.nw time{font-size:12px;color:#666}
.nw h4{margin:8px 0;font-size:16px;color:#000}.nw p{font-size:13.5px;color:#333;margin-bottom:10px}
.nw a{color:#000;font-size:13.5px;text-decoration:underline}
/* contact */
.ct-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
form.ct{background:#fff;border:1px solid #e5e5e5;border-radius:var(--r);padding:28px;display:grid;gap:14px}
form.ct label{font-size:13.5px;color:#333}
form.ct input,form.ct textarea{background:#fff;border:1px solid #ddd;border-radius:9px;color:#000;padding:11px 13px;font-size:14.5px;width:100%;font-family:inherit}
.info{background:#fff;border:1px solid #e5e5e5;border-radius:var(--r);padding:28px}
.info h3{margin-bottom:14px;color:#000}
.info div{margin-bottom:12px;font-size:14.5px;color:#333}
.info div b{color:#000;display:inline-block;min-width:70px}
/* footer */
footer{border-top:1px solid #e5e5e5;background:#ffffff;padding:46px 0 22px;margin-top:20px}
.ft{display:grid;grid-template-columns:1fr 1fr 1fr;gap:26px}
.ft h5{margin-bottom:12px;font-size:15px;color:#000}
.ft a,.ft p{display:block;font-size:13.5px;color:#333;margin-bottom:7px}
.copy{text-align:center;color:#666;font-size:12.5px;margin-top:30px;border-top:1px solid #e5e5e5;padding-top:18px}
/* modal */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none;align-items:center;justify-content:center;z-index:99;padding:18px}
.modal.open{display:flex}
.mbox{background:#fff;border:1px solid #e5e5e5;border-radius:16px;max-width:640px;width:100%;max-height:88vh;overflow:auto}
.mbox .ph{height:220px;font-size:80px}
.mbox .bd{padding:26px}
.mbox h3{font-size:21px;margin-bottom:8px;color:#000}
.mbox .spec{margin:12px 0;font-size:14px;color:#333}
.mbox .spec li{margin-inline-start:18px;margin-bottom:4px}
.mx{display:flex;gap:10px;margin-top:16px}
/* admin link */
.admin-fab{position:fixed;bottom:20px;inset-inline-end:20px;background:#fff;border:1px solid #ddd;color:#333;border-radius:99px;padding:9px 18px;font-size:13px;z-index:60}
.admin-fab:hover{color:#000;border-color:#000}
.wa-fab{position:fixed;bottom:20px;inset-inline-end:20px;display:inline-flex;align-items:center;gap:8px;background:#25D366;color:#fff;border-radius:99px;padding:11px 20px;font-size:14px;font-weight:700;z-index:60;box-shadow:0 8px 28px rgba(37,211,102,.4)}
.wa-fab:hover{filter:brightness(1.08)}
@media(max-width:900px){
  .hero .wrap{grid-template-columns:1fr;padding-top:56px}
  nav.main{display:none;position:absolute;top:64px;inset-inline:0;background:#ffffff;flex-direction:column;padding:14px;border-bottom:1px solid #e5e5e5;align-items:stretch;max-height:70vh;overflow:auto}
  nav.main.open{display:flex}
  .has-drop .drop{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;margin:4px 0 8px;max-width:none}
  .burger{display:block}
  .stats,.ctl4{grid-template-columns:repeat(2,1fr)}
  .ct-grid,.sup3{grid-template-columns:1fr}
  .ft{grid-template-columns:1fr 1fr}
}
@media(min-width:1600px){
  :root{--max:1560px}
  .wrap{padding:0 12px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
}