:root{--navy:#0B3A63;--navy2:#1167C4;--blue:#1189EB;--blue2:#0D6FBE;--ink:#1B2733;--ink2:#5A6B7C;--bg:#F4F7FA;--card:#FFFFFF;--line:#DFE6EE;--r:8px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit}
img{max-width:100%;vertical-align:middle}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}

/* ===== 头部导航 ===== */
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:60;box-shadow:0 2px 12px rgba(11,58,99,.18)}
.nav-inner{max-width:1120px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff}
.brand .mark{width:34px;height:34px;flex:none;border-radius:8px;background:linear-gradient(135deg,var(--blue),#0A4F8E);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800}
.brand .t{font-size:19px;font-weight:800;letter-spacing:1px}
.brand .t small{display:block;font-size:10px;font-weight:400;color:#A9C2DA;letter-spacing:2px}
.nav{display:flex;gap:26px;list-style:none}
.nav a{color:#D6E4F2;text-decoration:none;font-size:15px;padding:6px 2px;position:relative;transition:color .2s}
.nav a:hover{color:#fff}
.nav a.active{color:#fff;font-weight:700}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:2px;background:var(--blue)}
.nav-tel{color:#fff;text-decoration:none;font-weight:800;font-size:15px;background:var(--blue);padding:8px 16px;border-radius:999px}
.nav-tel:active{background:var(--blue2)}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer}

/* ===== Hero ===== */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 70%,var(--blue) 130%);color:#fff;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:46px 46px;pointer-events:none}
.hero-inner{position:relative;max-width:1120px;margin:0 auto;padding:76px 20px 84px;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#A9C9E6;border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:5px 16px;margin-bottom:20px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px rgba(17,137,235,.35)}
.hero h1{font-size:42px;line-height:1.28;font-weight:900;letter-spacing:1px}
.hero h1 .accent{color:#7DC4FF}
.hero .lead{font-size:17px;color:#D6E4F2;margin-top:18px;max-width:560px}
.hero .cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 28px;border-radius:var(--r);font-size:15px;font-weight:700;text-decoration:none;transition:background .2s,transform .1s}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 6px 20px rgba(17,137,235,.35)}
.btn-blue:active{background:var(--blue2)}
.btn-ghost{border:1px solid rgba(255,255,255,.5);color:#fff}
.btn-ghost:active{background:rgba(255,255,255,.14)}
.hero-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{font-size:12px;color:#C9DAEA;border:1px solid rgba(255,255,255,.22);padding:5px 14px;border-radius:999px;background:rgba(255,255,255,.06)}
.hero-visual{display:flex;align-items:center;justify-content:center}
.hero-device{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.2);border-radius:18px;padding:26px 30px;backdrop-filter:blur(4px)}
.hero-device .dname{font-size:13px;color:#A9C9E6;letter-spacing:2px}
.hero-device .dtype{font-size:24px;font-weight:800;margin-top:6px}
.hero-device .rows{display:grid;gap:12px;margin-top:18px}
.hero-device .row{display:flex;justify-content:space-between;gap:20px;border-top:1px dashed rgba(255,255,255,.2);padding-top:10px;font-size:13px;color:#D6E4F2}
.hero-device .row b{color:#fff}

/* ===== 区块通用 ===== */
section{padding:66px 0}
.sec-head{text-align:center;margin-bottom:42px}
.sec-head .en{font-size:13px;letter-spacing:3px;color:var(--blue);font-weight:700}
.sec-head h2{font-size:32px;font-weight:900;letter-spacing:1px;margin-top:6px;color:var(--navy)}
.sec-head .sub{color:var(--ink2);margin-top:12px;max-width:640px;margin-left:auto;margin-right:auto}
.alt{background:#fff}

/* ===== 产品卡片 ===== */
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px;transition:box-shadow .25s,transform .2s;text-decoration:none;color:inherit;display:block}
.pcard:hover{box-shadow:0 12px 32px rgba(11,58,99,.12);transform:translateY(-4px)}
.pcard .picon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,var(--blue),#0A4F8E);color:#fff;font-size:26px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.pcard .pimg{width:100%;height:auto;display:block;border-radius:10px;border:1px solid var(--line);background:#fff;margin-bottom:16px;object-fit:cover}
.pcard h3{font-size:19px;color:var(--navy);font-weight:800}
.pcard .ptype{font-size:12px;color:var(--blue);letter-spacing:1px;margin-top:4px}
.pcard p{font-size:14px;color:var(--ink2);margin-top:12px}
.pcard .more{display:inline-block;margin-top:16px;color:var(--blue);font-weight:700;font-size:14px}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:10px}
.feature{background:#F8FAFD;border:1px solid var(--line);border-radius:var(--r);padding:20px}
.feature .fi{font-size:22px;color:var(--blue)}
.feature h4{font-size:16px;color:var(--navy);margin:8px 0 6px}
.feature p{font-size:14px;color:var(--ink2)}

/* ===== 平台/方案 ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.split .img-holder{background:linear-gradient(135deg,#EAF4FF,#F4F7FA);border:1px solid var(--line);border-radius:var(--r);min-height:280px;display:flex;align-items:center;justify-content:center;color:var(--blue);font-size:64px}
.steps{display:grid;gap:14px;margin-top:8px}
.step{display:flex;gap:14px;background:#F8FAFD;border:1px solid var(--line);border-radius:var(--r);padding:16px}
.step .idx{flex:none;width:32px;height:32px;border-radius:8px;background:var(--navy);color:#fff;font-size:14px;font-weight:800;display:flex;align-items:center;justify-content:center}
.step b{color:var(--navy);font-size:15px}
.step p{font-size:14px;color:var(--ink2);margin-top:3px}
.rolecards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.rolecard{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;text-align:center}
.rolecard .ri{font-size:30px;color:var(--blue)}
.rolecard h4{font-size:16px;color:var(--navy);margin-top:8px}
.rolecard p{font-size:13px;color:var(--ink2);margin-top:6px}

/* ===== 新闻列表(站内页) ===== */
.nl{display:grid;gap:16px}
.nl .it{display:flex;gap:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px 24px;text-decoration:none;color:inherit;transition:.2s}
.nl .it:hover{border-color:var(--blue);box-shadow:0 6px 18px rgba(17,137,235,.1)}
.nl .it .d{font-size:13px;color:var(--blue);white-space:nowrap;font-weight:700}
.nl .it h3{font-size:17px;color:var(--navy);margin-bottom:4px}
.nl .it p{font-size:14px;color:var(--ink2)}
.nl .it span{font-size:12px;color:#999}
.nl .btn-more{display:block;margin:28px auto 0;width:max-content}

/* ===== 联系方式 ===== */
.contact{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:46px 46px;pointer-events:none}
.contact-inner{position:relative;max-width:1120px;margin:0 auto;padding:0 20px}
.contact .sec-head h2{color:#fff}
.contact .sec-head .en{color:#7DC4FF}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:center}
.ccard{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:var(--r);padding:26px}
.ccard .ci{font-size:26px;color:#7DC4FF}
.ccard .t{font-size:13px;color:#A9C9E6;margin-top:8px}
.ccard .v{font-size:22px;font-weight:800;margin-top:6px}
.ccard a{color:#fff;text-decoration:none}
.addr-line{text-align:center;color:#C9DAEA;margin-top:28px;font-size:14px}

/* ===== 页脚 ===== */
.site-footer{background:#06203A;color:#8FA8C0;padding:30px 0;font-size:13px}
.footer-inner{max-width:1120px;margin:0 auto;padding:0 20px;display:flex;flex-wrap:wrap;gap:10px 28px;align-items:center;justify-content:space-between}
.footer-inner .links a{color:#A9C2DA;text-decoration:none;margin-right:18px}
.footer-inner .links a:hover{color:#fff}

/* ===== 面包屑 ===== */
.crumb{background:#EAF2FA;border-bottom:1px solid var(--line);padding:12px 0;font-size:13px;color:#5A6B7C}
.crumb .wrap{display:flex;flex-wrap:wrap;gap:6px}
.crumb a{color:var(--blue);text-decoration:none}

/* ===== 页头 banner ===== */
.page-hero{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;padding:56px 0 60px;text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:46px 46px;pointer-events:none}
.page-hero h1{font-size:34px;font-weight:900;letter-spacing:1px}
.page-hero p{color:#D6E4F2;margin-top:12px;max-width:680px;margin-left:auto;margin-right:auto;font-size:15px}

/* ===== 响应式 ===== */
@media (max-width:900px){
  .nav,.nav-tel{display:none}
  .nav-toggle{display:block}
  .nav.open{display:flex;flex-direction:column;position:absolute;top:66px;left:0;right:0;background:var(--navy);padding:14px 20px;gap:12px}
  .hero-inner{grid-template-columns:1fr;padding:56px 20px}
  .hero h1{font-size:32px}
  .pgrid,.features,.contact-grid{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr}
  .rolecards{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .pgrid,.features,.contact-grid,.rolecards{grid-template-columns:1fr}
  .sec-head h2{font-size:26px}
  .nl .it{flex-direction:column;gap:8px}
  .page-hero h1{font-size:26px}
}