:root{
  --navy:#0B1F3A;--blue:#1769E0;--blue-d:#1150b3;--teal:#00B8A9;--orange:#FF8A00;
  --bg:#F4F7FA;--ink:#1C2B3C;--muted:#5E6E82;--line:#E3E9F1;
  --shadow:0 8px 30px rgba(11,31,58,.08);--shadow-sm:0 3px 12px rgba(11,31,58,.06);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;color:var(--ink);background:#fff;line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.tag{display:inline-block;font-size:12px;padding:3px 10px;border-radius:999px;font-weight:500}
.t-blue{background:#e7f1ff;color:var(--blue)}
.t-teal{background:#dcf7f4;color:#0a8f83}
.t-orange{background:#fff0de;color:#c0640a}
.t-navy{background:#e8edf4;color:var(--navy)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:10px;font-weight:600;font-size:15px;cursor:pointer;border:1.5px solid transparent;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-d);transform:translateY(-1px);box-shadow:0 8px 20px rgba(23,105,224,.3)}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff;background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.btn-outline{border-color:var(--blue);color:var(--blue);background:#fff}
.btn-outline:hover{background:#eef5ff}
.sec-title{text-align:center;margin-bottom:14px}
.sec-title .kicker{display:inline-block;color:var(--blue);font-size:13px;font-weight:700;letter-spacing:2px;margin-bottom:10px}
.sec-title h2{font-size:30px;color:var(--navy);font-weight:900;letter-spacing:.5px}
.sec-title p{color:var(--muted);margin-top:10px;max-width:680px;margin-left:auto;margin-right:auto}
section.block{padding:76px 0}
section.block.alt{background:var(--bg)}

/* ---------- 导航 ---------- */
header.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:11px;cursor:pointer}
.brand img{width:42px;height:42px}
.brand .bt b{display:block;font-size:19px;color:var(--navy);font-weight:900;letter-spacing:2px;line-height:1.1}
.brand .bt span{font-size:10.5px;color:var(--muted);letter-spacing:2.5px}
.menu{display:flex;gap:4px;align-items:center}
.menu a{padding:9px 14px;font-size:14.5px;font-weight:500;color:#3a4a5e;border-radius:8px;transition:.15s}
.menu a:hover,.menu a.on{color:var(--blue);background:#eef5ff}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .hot{font-size:13.5px;color:var(--muted)}
.hamburger{display:none;background:none;border:none;font-size:26px;color:var(--navy);cursor:pointer}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;color:#fff;background:var(--navy);overflow:hidden}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,20,38,.95) 0%,rgba(8,23,44,.82) 42%,rgba(23,105,224,.35) 100%)}
.hero-in{position:relative;z-index:2;padding:96px 0 110px;max-width:660px}
.hero .pill{display:inline-block;background:rgba(0,184,169,.16);border:1px solid rgba(0,184,169,.5);color:#8feee5;font-size:13px;padding:5px 15px;border-radius:999px;margin-bottom:22px}
.hero h1{font-size:43px;font-weight:900;line-height:1.28;letter-spacing:1px}
.hero h1 em{font-style:normal;color:#5db0ff}
.hero .desc{margin:20px 0 32px;font-size:16.5px;color:#cdddec;font-weight:300;line-height:1.9}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.trust{position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.12);background:rgba(8,23,44,.55)}
.trust-in{display:grid;grid-template-columns:repeat(4,1fr);padding:22px 0}
.trust .ti{text-align:center;border-right:1px solid rgba(255,255,255,.1)}
.trust .ti:last-child{border-right:none}
.trust .ti b{display:block;font-size:26px;color:#fff;font-weight:900}
.trust .ti span{font-size:13px;color:#9db6d2}

/* ---------- 通用卡片 ---------- */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;transition:.25s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.card h4{font-size:17px;color:var(--navy);margin-bottom:8px;font-weight:700;display:flex;align-items:center;gap:9px}
.card p{font-size:13.8px;color:var(--muted)}
.card .ico{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:21px;flex:none;background:#eaf2fe;color:var(--blue)}
.card .ico svg{width:21px;height:21px}
.card.teal .ico{background:#dcf7f4;color:#0a8f83}
.card.orange .ico{background:#fff0de;color:#c0640a}
.card.navy .ico{background:#e8edf4;color:var(--navy)}

/* 架构 */
.arch{background:linear-gradient(160deg,#0b1f3a,#10355f);border-radius:18px;padding:40px;color:#fff;margin-top:20px}
.arch-layer{border:1px solid rgba(255,255,255,.16);border-radius:12px;padding:16px 20px;margin-bottom:12px;display:flex;align-items:center;gap:18px;background:rgba(255,255,255,.05)}
.arch-layer .al-name{flex:none;width:96px;font-weight:700;color:#8fd0ff;font-size:14px}
.arch-layer .al-items{display:flex;gap:10px;flex-wrap:wrap}
.arch-layer .al-items span{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);padding:4px 12px;border-radius:999px;font-size:12.5px}
.arch-arrow{text-align:center;color:#5db0ff;font-size:18px;margin:-4px 0 8px}

/* 硬件海报墙 */
.poster-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:26px}
.poster{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;cursor:zoom-in;transition:.25s}
.poster:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.poster .ph{aspect-ratio:3/4;background:linear-gradient(160deg,#eef4fc,#dbe7f6);display:flex;align-items:center;justify-content:center;overflow:hidden;padding:10px}
.poster .ph img{width:100%;height:100%;object-fit:contain}
.poster .pc{padding:12px 14px;border-top:1px solid var(--line)}
.poster .pc b{font-size:14px;color:var(--navy)}
.poster .pc span{display:block;font-size:12px;color:var(--muted);margin-top:2px}

/* 方案卡 */
.sol-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;overflow:hidden;transition:.25s;cursor:pointer}
.sol-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:#bcd6f7}
.sol-card .ban{position:absolute;right:-30px;top:-30px;width:110px;height:110px;border-radius:50%;opacity:.12}
.sol-card h4{font-size:18px;color:var(--navy);margin:6px 0 10px}
.sol-card p{font-size:13.6px;color:var(--muted);min-height:44px}
.sol-card .pts{margin-top:12px;font-size:12.8px;color:#42546b}
.sol-card .pts li{padding-left:18px;position:relative;margin:5px 0}
.sol-card .pts li::before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:2px;background:var(--teal)}
.sol-card .more{display:inline-block;margin-top:14px;color:var(--blue);font-size:13.5px;font-weight:600}

/* 案例 */
.case-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.case-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.case-top{padding:22px 24px 16px;color:#fff;position:relative;min-height:118px}
.case-top h4{font-size:18px;font-weight:700;margin-bottom:6px}
.case-top .ind{font-size:12.5px;opacity:.85}
.case-body{padding:18px 24px 22px;flex:1;display:flex;flex-direction:column}
.case-body p{font-size:13.5px;color:var(--muted);flex:1}
.case-metrics{display:flex;gap:10px;margin:14px 0 4px;flex-wrap:wrap}
.case-metrics div{flex:1;min-width:86px;background:var(--bg);border-radius:9px;padding:9px;text-align:center}
.case-metrics b{display:block;font-size:19px;color:var(--blue)}
.case-metrics span{font-size:11.5px;color:var(--muted)}
.filter-bar{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:26px 0 34px}
.filter-bar button{border:1px solid var(--line);background:#fff;padding:7px 18px;border-radius:999px;font-size:13.5px;cursor:pointer;color:#42546b;transition:.15s}
.filter-bar button.on,.filter-bar button:hover{background:var(--blue);color:#fff;border-color:var(--blue)}

/* CTA / 资料门 */
.cta-band{background:linear-gradient(120deg,#0b1f3a,#1769e0);border-radius:20px;padding:52px 48px;color:#fff;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center;overflow:hidden;position:relative}
.cta-band h3{font-size:26px;margin-bottom:12px}
.cta-band p{color:#cfe0f3;font-size:14.5px}
.lead-form{background:#fff;border-radius:14px;padding:26px;color:var(--ink)}
.lead-form h4{color:var(--navy);font-size:17px;margin-bottom:14px}
.field{margin-bottom:12px}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1.5px solid var(--line);border-radius:9px;font-size:14px;font-family:inherit;color:var(--ink);outline:none;transition:.15s;background:#fbfdff}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(23,105,224,.1)}
.field textarea{resize:vertical;min-height:64px}
.lead-form button{width:100%;justify-content:center}
.form-note{font-size:11.5px;color:#93a3b6;margin-top:9px;text-align:center}
.hp{position:absolute;left:-9999px}

/* toast */
#toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(30px);background:var(--navy);color:#fff;padding:14px 24px;border-radius:10px;font-size:14px;box-shadow:0 10px 30px rgba(0,0,0,.25);opacity:0;pointer-events:none;transition:.3s;z-index:999;max-width:90vw}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
#toast b{color:#7fe3d8}

/* lightbox */
#lightbox{position:fixed;inset:0;background:rgba(6,15,28,.88);z-index:200;display:none;align-items:center;justify-content:center;padding:30px;cursor:zoom-out}
#lightbox.show{display:flex}
#lightbox img{max-height:92vh;max-width:92vw;border-radius:10px;box-shadow:0 20px 60px rgba(0,0,0,.5)}

/* 内页头 */
.page-hero{background:linear-gradient(120deg,#0b1f3a,#123a6b);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-80px;top:-80px;width:340px;height:340px;border:1px solid rgba(0,184,169,.25);border-radius:50%}
.page-hero h1{font-size:34px;font-weight:900;margin-bottom:12px;position:relative;z-index:2}
.page-hero p{color:#bcd0e6;max-width:720px;position:relative;z-index:2}
.crumb{font-size:13px;color:#8fa9c6;margin-bottom:14px;position:relative;z-index:2}
.crumb a:hover{color:#fff}

/* 方案详情块 */
.sol-detail{border:1px solid var(--line);border-radius:16px;overflow:hidden;margin:26px 0;background:#fff}
.sd-head{display:grid;grid-template-columns:64px 1fr auto;gap:18px;align-items:center;padding:24px 28px;background:linear-gradient(90deg,#f4f8ff,#fff);border-bottom:1px solid var(--line)}
.sd-head .n{width:56px;height:56px;border-radius:14px;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:900}
.sd-head h3{font-size:20px;color:var(--navy)}
.sd-head span{font-size:13px;color:var(--muted)}
.sd-body{padding:26px 28px;display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px}
.sd-col h5{font-size:14px;color:var(--blue);margin-bottom:10px;letter-spacing:1px}
.sd-col li{font-size:13.3px;color:#42546b;padding-left:16px;position:relative;margin:7px 0}
.sd-col li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--teal)}
.sd-foot{padding:18px 28px;background:#f8fbff;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.sd-foot .vals{display:flex;gap:22px;flex-wrap:wrap}
.sd-foot .vals b{color:var(--blue);font-size:18px}
.sd-foot .vals span{font-size:12.5px;color:var(--muted);margin-left:5px}

/* 时间轴 */
.timeline{position:relative;margin:30px 0 10px;padding-left:6px}
.tl{display:grid;grid-template-columns:110px 26px 1fr;gap:16px;margin-bottom:22px}
.tl .y{text-align:right;font-weight:900;color:var(--blue);font-size:16px;padding-top:2px}
.tl .ax{position:relative;width:2px;background:linear-gradient(var(--blue),var(--teal));justify-self:center}
.tl .dot{position:absolute;top:5px;left:50%;transform:translateX(-50%);width:13px;height:13px;border-radius:50%;background:#fff;border:3px solid var(--blue)}
.tl .box{background:#fff;border:1px solid var(--line);border-radius:11px;padding:13px 18px;box-shadow:var(--shadow-sm)}
.tl .box b{color:var(--navy)}
.tl .box p{font-size:13.3px;color:var(--muted)}

/* 关于 */
.about-feat{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.qual-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:22px}
.qual{border:1px solid var(--line);border-radius:12px;padding:18px 14px;text-align:center;background:#fff}
.qual .qi{font-size:26px;color:var(--blue)}
.qual b{display:block;color:var(--navy);font-size:14px;margin:8px 0 3px}
.qual span{font-size:12px;color:var(--muted)}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:36px;align-items:start}
.cinfo li{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
.cinfo .ci{width:42px;height:42px;border-radius:11px;background:#eaf2fe;color:var(--blue);display:flex;align-items:center;justify-content:center;flex:none}
.cinfo .ci svg{width:20px;height:20px}
.cinfo b{display:block;color:var(--navy);font-size:14.5px}
.cinfo span{font-size:13.5px;color:var(--muted)}
.map-ph{margin-top:20px;height:210px;border-radius:14px;background:linear-gradient(135deg,#dce8f6,#eef4fc);border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--muted);gap:8px}
.qr-row{display:flex;gap:18px;margin-top:22px;align-items:center}
.qr-row .qr{width:104px;height:104px;border:1px solid var(--line);border-radius:10px;padding:6px;background:#fff}
.qr-row p{font-size:13px;color:var(--muted)}

/* 产品模块详情 */
.mod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:26px}
.mod{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;transition:.25s}
.mod:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.mod .mh{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.mod .mh .mi{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:900;color:#fff}
.mod h4{font-size:16.5px;color:var(--navy)}
.mod .en{font-size:11px;color:#93a3b6;letter-spacing:.5px}
.mod li{font-size:13px;color:var(--muted);padding-left:15px;position:relative;margin:6px 0}
.mod li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--blue)}
.tech-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.tech-strip span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 15px;font-size:12.8px;color:#42546b}

/* 页脚 */
footer{background:#081525;color:#8fa6c2;padding:60px 0 0;font-size:13.5px}
.ft-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
footer h5{color:#fff;font-size:15px;margin-bottom:16px}
footer li{margin:9px 0}
footer a:hover{color:#7db6f5}
.ft-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.ft-brand img{width:40px;height:40px;filter:brightness(0) invert(1) opacity(.92)}
.ft-brand b{color:#fff;font-size:18px;letter-spacing:2px}
.ft-desc{font-size:12.8px;line-height:1.9}
.ft-sec-badge{display:inline-block;margin-top:12px;border:1px solid rgba(0,184,169,.4);color:#7fe3d8;border-radius:7px;padding:5px 11px;font-size:11.5px}
.ft-bottom{padding:18px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12px;color:#67809e}
.ft-bottom a:hover{color:#bcd0e6}

/* 法律弹窗 */
#legal{position:fixed;inset:0;background:rgba(6,15,28,.6);z-index:300;display:none;align-items:center;justify-content:center;padding:24px}
#legal.show{display:flex}
.legal-box{background:#fff;border-radius:16px;max-width:720px;width:100%;max-height:84vh;overflow:auto;padding:34px 36px;position:relative}
.legal-box h3{color:var(--navy);font-size:21px;margin-bottom:6px}
.legal-box h5{color:var(--blue);margin:18px 0 6px;font-size:14.5px}
.legal-box p,.legal-box li{font-size:13.5px;color:#42546b;margin:6px 0}
.legal-box ul{margin-left:18px;list-style:disc}
.legal-close{position:absolute;right:18px;top:16px;background:none;border:none;font-size:24px;color:#93a3b6;cursor:pointer;line-height:1}
.legal-close:hover{color:var(--navy)}

/* 面包屑 SEO */
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:10px}
.breadcrumb a{color:var(--blue)}

/* 响应式 */
@media(max-width:980px){
  .grid3,.grid4,.poster-grid,.mod-grid,.about-feat,.qual-grid{grid-template-columns:repeat(2,1fr)}
  .grid2,.contact-grid,.cta-band{grid-template-columns:1fr}
  .sd-body{grid-template-columns:1fr;gap:16px}
  .ft-grid{grid-template-columns:1fr 1fr}
  .menu,.nav-cta .hot{display:none}
  .hamburger{display:block}
  .menu.open{display:flex;position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:14px 24px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);align-items:stretch}
  .menu.open a{padding:12px 10px;font-size:15px}
  .hero h1{font-size:31px}
  .hero-in{padding:64px 0 72px}
  .trust-in{grid-template-columns:repeat(2,1fr);gap:14px 0;padding:18px 0}
  .trust .ti:nth-child(2){border-right:none}
  .sec-title h2{font-size:24px}
  section.block{padding:54px 0}
  .sd-head{grid-template-columns:52px 1fr;}
  .sd-head .btn{grid-column:1/-1;justify-content:center}
}
@media(max-width:560px){
  .grid3,.grid4,.poster-grid,.mod-grid,.about-feat,.qual-grid,.ft-grid{grid-template-columns:1fr}
  .hero h1{font-size:26px}
  .cta-band{padding:34px 24px}
  .arch-layer{flex-direction:column;align-items:flex-start;gap:8px}
}

/* ===== 首页 Hero 适配（v2 新增） ===== */
.hero-in{max-width:none!important;padding:96px 0 100px}
.hero h1{font-size:46px;font-weight:900;line-height:1.2;letter-spacing:.5px}
.hero h1 .grad{background:linear-gradient(90deg,#5db0ff,#00B8A9);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{color:#cdddec;font-size:16.5px;line-height:1.9;max-width:720px;margin:22px 0 32px}
.hero .tag{display:inline-block;font-size:13px;padding:6px 16px;border-radius:999px;margin-bottom:22px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-stats{display:flex;gap:48px;margin-top:56px;flex-wrap:wrap}
.hero-stats div b{display:block;font-size:38px;font-weight:900;color:#fff;line-height:1.1}
.hero-stats div span{font-size:13px;color:#9db4d0}
.cta-band{margin:0 24px 40px}
@media(max-width:768px){
  .hero-in{padding:64px 0 72px}
  .hero-stats{gap:24px;margin-top:36px}
  .hero-stats div b{font-size:28px}
}