:root{
  --navy:#08203c;
  --navy-2:#0d2c50;
  --blue:#1f6feb;
  --blue-2:#0aa2ff;
  --cyan:#12d6c4;
  --ink:#16233a;
  --text:#4a5b74;
  --text-light:#7b8ca6;
  --line:#e5eaf2;
  --bg:#ffffff;
  --bg-soft:#f5f8fc;
  --radius:14px;
  --shadow:0 8px 30px rgba(8,32,60,.08);
  --shadow-hover:0 16px 44px rgba(8,32,60,.14);
  --maxw:1200px;
  --header-h:72px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  color:var(--text);background:var(--bg);line-height:1.75;font-size:15px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:.25s}
img{max-width:100%;display:block}
ul{list-style:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.35;font-weight:700;letter-spacing:.5px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-soft{background:var(--bg-soft)}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:3px;text-transform:uppercase;
  color:var(--blue);font-weight:700;margin-bottom:14px;
}
.sec-title{font-size:34px;margin-bottom:14px}
.sec-desc{font-size:16px;color:var(--text-light);max-width:720px}
.center{text-align:center}
.center .sec-desc{margin:0 auto}

/* ---------- header ---------- */
.header{
  position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:100;
  background:rgba(8,32,60,.82);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08);transition:.3s;
}
.header.scrolled{background:rgba(8,32,60,.96);box-shadow:0 4px 20px rgba(0,0,0,.18)}
.header .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:12px;color:#fff}
.logo .mark{
  width:38px;height:38px;border-radius:10px;flex:none;
  background:linear-gradient(135deg,var(--blue-2),var(--cyan));
  display:grid;place-items:center;font-weight:800;color:#06203c;font-size:19px;
}
.logo .txt strong{display:block;font-size:17px;letter-spacing:2px}
.logo .txt span{display:block;font-size:11px;color:#8fb3d9;letter-spacing:2.5px}
.nav{display:flex;align-items:center;gap:4px}
.nav > li{position:relative}
.nav > li > a{
  display:block;padding:10px 15px;font-size:15px;color:#d7e3f4;border-radius:8px;
}
.nav > li > a:hover,.nav > li > a.active{color:#fff;background:rgba(255,255,255,.1)}
.caret{
  display:inline-block;width:0;height:0;margin-left:5px;vertical-align:middle;
  border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:5px solid rgba(215,227,244,.75);
}
.nav .sub{
  position:absolute;top:100%;left:50%;transform:translate(-50%,8px);
  min-width:190px;background:#fff;border-radius:12px;box-shadow:var(--shadow);
  padding:8px;opacity:0;visibility:hidden;transition:.22s;border:1px solid var(--line);
}
.nav > li:hover .sub{opacity:1;visibility:visible;transform:translate(-50%,0)}
.nav .sub a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--ink)}
.nav .sub a:hover{background:var(--bg-soft);color:var(--blue)}
.nav .sub a small{display:block;font-size:12px;color:var(--text-light)}
.hd-cta{
  background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;
  padding:9px 20px;border-radius:24px;font-size:14px;font-weight:600;white-space:nowrap;
}
.hd-cta:hover{box-shadow:0 6px 18px rgba(31,111,235,.4);transform:translateY(-1px)}
.burger{display:none;width:40px;height:40px;border:none;background:none;cursor:pointer}
.burger i{display:block;height:2px;background:#fff;margin:5px 0;border-radius:2px}

/* ---------- hero ---------- */
.hero{
  position:relative;padding:calc(var(--header-h) + 96px) 0 96px;color:#fff;overflow:hidden;
  background:radial-gradient(1200px 600px at 78% 18%,rgba(18,214,196,.22),transparent 60%),
             linear-gradient(150deg,#08203c 0%,#0d2c50 55%,#123c6b 100%);
}
.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:56px 56px;mask-image:radial-gradient(circle at 60% 30%,#000,transparent 78%);
}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero h1{color:#fff;font-size:46px;line-height:1.25;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero p{font-size:17px;color:#c3d5ec;max-width:560px;margin-bottom:32px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:28px;
  font-size:15px;font-weight:600;transition:.25s;border:1px solid transparent;
}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff}
.btn-primary:hover{box-shadow:0 10px 26px rgba(31,111,235,.42);transform:translateY(-2px)}
.btn-ghost{border-color:rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.hero-stats{display:flex;gap:36px;margin-top:46px;flex-wrap:wrap}
.hero-stats b{display:block;font-size:30px;color:#fff;line-height:1.2}
.hero-stats span{font-size:13px;color:#9db8d8}

/* hero 盾牌面板 */
.shield-card{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  border-radius:18px;padding:26px;backdrop-filter:blur(6px);
}
.shield-card h4{color:#fff;font-size:16px;margin-bottom:16px;letter-spacing:1px}
.shield-card li{
  display:flex;align-items:center;gap:12px;padding:11px 0;color:#dbe7f7;font-size:14px;
  border-bottom:1px dashed rgba(255,255,255,.12);
}
.shield-card li:last-child{border:none}
.dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);flex:none;box-shadow:0 0 0 4px rgba(18,214,196,.18)}
.dot.warn{background:#ffb020;box-shadow:0 0 0 4px rgba(255,176,32,.18)}
.dot.danger{background:#ff5f6d;box-shadow:0 0 0 4px rgba(255,95,109,.18)}
.live{display:flex;align-items:center;gap:8px;font-size:12px;color:#8fd3ff;margin-top:16px}
.live i{width:7px;height:7px;border-radius:50%;background:#4ade80;animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.75)}}

/* ---------- cards ---------- */
.grid{display:grid;gap:24px}
.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;transition:.3s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:transparent}
.card .ico{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(135deg,rgba(31,111,235,.12),rgba(18,214,196,.18));
}
.card .ico svg{width:26px;height:26px;stroke:var(--blue);fill:none;stroke-width:1.8}
.card h3{font-size:19px;margin-bottom:10px}
.card p{font-size:14px;color:var(--text-light)}
.card .more{display:inline-block;margin-top:16px;font-size:14px;color:var(--blue);font-weight:600}
.card .more:hover{gap:6px}
.card .more::after{content:" →";}
.card::after{
  content:"";position:absolute;left:0;bottom:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--blue),var(--cyan));transition:.3s;
}
.card:hover::after{width:100%}

/* 产品页 - 大卡 */
.prod{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:64px 0;border-bottom:1px solid var(--line);
}
.prod:last-child{border:none}
.prod.rev .prod-vis{order:-1}
.prod h3{font-size:28px;margin-bottom:8px}
.prod .sub{color:var(--blue);font-size:14px;font-weight:600;letter-spacing:1px;margin-bottom:16px}
.prod p{color:var(--text-light);margin-bottom:20px}
.feat{display:grid;grid-template-columns:1fr 1fr;gap:12px 20px;margin-bottom:26px}
.feat li{display:flex;gap:10px;font-size:14px;color:var(--ink);align-items:flex-start}
.feat li::before{
  content:"✓";color:var(--cyan);font-weight:800;flex:none;
}
.prod-vis{
  border-radius:18px;padding:28px;min-height:280px;
  background:linear-gradient(150deg,#0d2c50,#123c6b);color:#fff;position:relative;overflow:hidden;
}
.prod-vis::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:34px 34px;
}
.prod-vis .pv-head{position:relative;display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.prod-vis .pv-head b{font-size:15px;letter-spacing:1px}
.prod-vis .pv-head span{font-size:12px;padding:4px 10px;border-radius:20px;background:rgba(74,222,128,.16);color:#4ade80}
.prod-vis .row{
  position:relative;display:flex;justify-content:space-between;align-items:center;
  padding:12px 14px;margin-bottom:10px;border-radius:10px;background:rgba(255,255,255,.07);font-size:13.5px;
}
.prod-vis .row .bar{flex:1;height:6px;margin:0 14px;border-radius:6px;background:rgba(255,255,255,.12);overflow:hidden}
.prod-vis .row .bar i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--blue-2),var(--cyan))}
.prod-vis .logs{position:relative;font-size:12.5px;color:#9fc4ea;line-height:2;font-family:ui-monospace,Consolas,monospace}
.prod-vis .logs .hi{color:#ff8f8f}
.prod-vis .kv{position:relative;display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:6px}
.prod-vis .kv div{background:rgba(255,255,255,.07);border-radius:10px;padding:14px;text-align:center}
.prod-vis .kv b{display:block;font-size:24px;color:var(--cyan)}
.prod-vis .kv span{font-size:12px;color:#9fc4ea}

/* ---------- 表格 ---------- */
.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow);font-size:14px}
.tbl th,.tbl td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line)}
.tbl th{background:var(--navy);color:#fff;font-weight:600;font-size:14px}
.tbl tr:last-child td{border:none}
.tbl td:first-child{color:var(--ink);font-weight:600}

/* ---------- 页头横幅 ---------- */
.page-hero{
  padding:calc(var(--header-h) + 62px) 0 62px;color:#fff;position:relative;overflow:hidden;
  background:linear-gradient(140deg,#08203c,#123c6b);
}
.page-hero::after{
  content:"";position:absolute;right:-80px;top:-60px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,214,196,.25),transparent 65%);
}
.page-hero h1{color:#fff;font-size:38px;margin-bottom:12px}
.page-hero p{color:#b9cde8;font-size:16px;max-width:680px}
.crumb{font-size:13px;color:#8fb3d9;margin-bottom:14px}
.crumb a:hover{color:#fff}

/* ---------- 步骤 / 时间线 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative}
.step::before{
  counter-increment:s;content:counter(s,decimal-leading-zero);
  font-size:30px;font-weight:800;color:rgba(31,111,235,.16);display:block;margin-bottom:8px;
}
.step h4{font-size:17px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--text-light)}
.tl{border-left:2px solid var(--line);padding-left:26px;margin-top:20px}
.tl li{position:relative;padding-bottom:26px}
.tl li::before{
  content:"";position:absolute;left:-33px;top:6px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:3px solid var(--blue);
}
.tl b{color:var(--ink);font-size:16px}
.tl p{font-size:14px;color:var(--text-light)}

/* ---------- CTA ---------- */
.cta-band{
  padding:64px 0;text-align:center;color:#fff;
  background:linear-gradient(120deg,#0d2c50,#1f6feb 60%,#12d6c4);
}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.85);margin-bottom:26px}
.cta-band .btn-ghost{background:rgba(255,255,255,.08)}

/* ---------- 表单 ---------- */
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.form .fld{margin-bottom:18px}
.form label{display:block;font-size:14px;color:var(--ink);font-weight:600;margin-bottom:8px}
.form input,.form select,.form textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:14px;
  font-family:inherit;color:var(--ink);transition:.2s;background:#fff;
}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(31,111,235,.12)}
.form textarea{min-height:110px;resize:vertical}
.form .btn{width:100%;justify-content:center;border:none;cursor:pointer}
.contact-list li{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.contact-list li:last-child{border:none}
.contact-list .ico{width:44px;height:44px;flex:none}
.contact-list b{display:block;color:var(--ink);font-size:15px}
.contact-list span{font-size:13.5px;color:var(--text-light)}

/* ---------- footer ---------- */
.footer{background:var(--navy);color:#9db8d8;padding:64px 0 0;font-size:14px}
.footer .grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:1px}
.footer li{padding:5px 0}
.footer a:hover{color:#fff}
.footer .f-logo{display:flex;align-items:center;gap:12px;margin-bottom:18px;color:#fff}
.footer .f-logo .mark{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;font-weight:800;
  color:#06203c;font-size:20px;background:linear-gradient(135deg,var(--blue-2),var(--cyan));
}
.footer .f-logo strong{display:block;font-size:16px;letter-spacing:2px}
.footer .f-logo span{font-size:11px;letter-spacing:2px;color:#7fa3cc}
.footer .qr{width:104px;height:104px;border-radius:10px;background:rgba(255,255,255,.1);display:grid;place-items:center;font-size:12px;color:#8fb3d9;text-align:center;padding:8px}
.f-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- 动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:.7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero .wrap{grid-template-columns:1fr}
  .g4,.steps{grid-template-columns:repeat(2,1fr)}
  .g5{grid-template-columns:repeat(3,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .prod{grid-template-columns:1fr;gap:32px}
  .prod.rev .prod-vis{order:0}
  .footer .grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .sec-title{font-size:26px}
  .hero h1{font-size:32px}
  .page-hero h1{font-size:28px}
  .nav{
    position:fixed;top:var(--header-h);left:0;right:0;background:var(--navy);flex-direction:column;
    align-items:stretch;padding:14px 20px;gap:2px;display:none;max-height:calc(100vh - var(--header-h));overflow:auto;
  }
  .nav.open{display:flex}
  .nav .sub{position:static;transform:none;opacity:1;visibility:visible;background:rgba(255,255,255,.06);
    box-shadow:none;border:none;display:none;padding:4px 0 4px 10px}
  .nav > li.open .sub{display:block}
  .nav .sub a{color:#c9dcf2}
  .nav .sub a small{color:#8fb3d9}
  .burger{display:block}
  .hd-cta{display:none}
  .g4,.g5,.g3,.g2,.steps,.feat{grid-template-columns:1fr}
  .section{padding:56px 0}
  .footer .grid{grid-template-columns:1fr;gap:28px}
}