:root{
  --navy:#0E3A5C;
  --navy-2:#123F63;
  --blue:#1B6CA8;
  --blue-l:#E8F1F8;
  --accent:#D9501E;
  --accent-l:#FDF0EA;
  --steel:#6B7A85;
  --ink:#1B2733;
  --ink-2:#4A5A68;
  --bg:#FFFFFF;
  --bg-2:#F4F6F8;
  --bg-3:#EAEFF3;
  --line:#DDE3E8;
  --line-2:#C6D0D8;
  --ok:#1D7A5F;
  --radius:4px;
  --wrap:1200px;
  --font:'Helvetica Neue',Helvetica,Arial,'PingFang SC','Microsoft YaHei','Hiragino Sans GB',sans-serif;
  --mono:ui-monospace,'SF Mono',Consolas,'Courier New',monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.35;font-weight:600;letter-spacing:.01em}
h1{font-size:30px}
h2{font-size:24px}
h3{font-size:18px}
h4{font-size:16px}
p{margin:0 0 1em}
ul{margin:0 0 1em;padding-left:1.2em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- header ---------- */
.topbar{background:var(--navy);color:#CFDCE6;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;min-height:34px;gap:16px;flex-wrap:wrap}
.topbar a{color:#CFDCE6}
.topbar a:hover{color:#fff}
.hdr{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.hdr .wrap{display:flex;align-items:center;gap:24px;min-height:72px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--navy)}
.logo-mark{width:44px;height:44px;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;letter-spacing:.06em;border-radius:var(--radius)}
.logo-txt strong{display:block;font-size:17px;line-height:1.2;letter-spacing:.02em}
.logo-txt span{display:block;font-size:12px;color:var(--steel);letter-spacing:.02em}
.nav{margin-left:auto;display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.nav a{padding:10px 12px;color:var(--ink);font-size:15px;border-bottom:2px solid transparent}
.nav a:hover,.nav a.on{color:var(--blue);border-bottom-color:var(--accent)}
.nav .cta{margin-left:10px;background:var(--accent);color:#fff !important;border:0;padding:10px 18px;border-radius:var(--radius);font-size:15px}
.nav .cta:hover{background:#B8421A}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line-2);border-radius:var(--radius);width:42px;height:38px;cursor:pointer}
.burger span{display:block;height:2px;background:var(--ink);margin:5px 8px}

/* ---------- hero ---------- */
.hero{background:linear-gradient(180deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-60px;width:520px;height:520px;background:radial-gradient(circle,rgba(255,255,255,.07) 0%,transparent 62%)}
.hero h1{font-size:38px;margin-bottom:.4em;max-width:22em}
.hero p.lead{font-size:17px;color:#D6E3EE;max-width:44em;margin-bottom:1.6em}
.hero .btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 26px;border-radius:var(--radius);font-size:15px;border:1px solid transparent;transition:.15s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#B8421A;color:#fff}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:#155A8D;color:#fff}
.btn-line{background:#fff;color:var(--navy);border-color:var(--line-2)}
.btn-line:hover{border-color:var(--blue);color:var(--blue)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:44px;border-top:1px solid rgba(255,255,255,.18);padding-top:26px}
.stat b{display:block;font-size:30px;line-height:1.1;font-family:var(--mono)}
.stat span{font-size:13px;color:#B9CBDA}

/* ---------- sections ---------- */
section{padding:56px 0}
.sec-alt{background:var(--bg-2)}
.sec-hd{margin-bottom:32px;max-width:52em}
.sec-hd .eyebrow{color:var(--accent);font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;margin-bottom:8px}
.sec-hd h2{margin-bottom:.3em}
.sec-hd p{color:var(--ink-2);margin:0}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* ---------- cards ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.15s}
.card:hover{border-color:var(--line-2);box-shadow:0 4px 16px rgba(14,58,92,.08)}
.card h3{margin-bottom:.4em;font-size:17px}
.card p{color:var(--ink-2);font-size:14px;margin:0}
.card .more{display:inline-block;margin-top:12px;font-size:14px}
.linecard{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;color:inherit}
.linecard:hover{border-color:var(--blue);color:inherit}
.linecard .thumb{height:150px;background:var(--bg-3);display:flex;align-items:center;justify-content:center;overflow:hidden}
.linecard .thumb img{width:100%;height:100%;object-fit:contain;padding:14px}
.linecard .body{padding:16px 18px}
.linecard .body h3{font-size:17px;margin-bottom:4px;display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.linecard .body em{font-style:normal;font-size:13px;color:var(--steel);font-family:var(--mono)}
.linecard .body p{font-size:13.5px;color:var(--ink-2);margin:0}

/* ---------- product grid ---------- */
.prod{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.prod:hover{border-color:var(--blue);box-shadow:0 4px 16px rgba(14,58,92,.08)}
.prod .ph{height:170px;background:var(--bg-2);display:flex;align-items:center;justify-content:center;padding:12px}
.prod .ph img{max-height:100%;width:auto;object-fit:contain}
.prod .pb{padding:14px 16px 16px;display:flex;flex-direction:column;flex:1;gap:6px}
.prod .pb h3{font-size:14.5px;margin:0;font-family:var(--mono);font-weight:600;line-height:1.4}
.prod .pb .d{font-size:13px;color:var(--ink-2);margin:0;flex:1}
.tags{display:flex;gap:6px;flex-wrap:wrap}
.tag{font-size:12px;padding:2px 8px;border-radius:2px;background:var(--bg-3);color:var(--ink-2)}
.tag.ex{background:var(--accent-l);color:#A33C12}
.tag.ip{background:var(--blue-l);color:#13527F}

/* ---------- filters ---------- */
.filters{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:24px;display:grid;gap:14px;grid-template-columns:1.4fr 1fr 1fr 1fr}
.filters label{font-size:13px;color:var(--steel);display:block;margin-bottom:5px}
.filters input,.filters select{width:100%;padding:9px 10px;border:1px solid var(--line-2);border-radius:var(--radius);font-size:14px;font-family:inherit;background:#fff;color:var(--ink)}
.filters input:focus,.filters select:focus{border-color:var(--blue);outline:none}
.count{font-size:13px;color:var(--steel);margin-bottom:14px}

/* ---------- detail ---------- */
.crumb{font-size:13px;color:var(--steel);padding:16px 0 0}
.crumb a{color:var(--steel)}
.crumb a:hover{color:var(--blue)}
.pd{display:grid;grid-template-columns:minmax(0,420px) minmax(0,1fr);gap:40px;padding:28px 0 56px}
.pd-img{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-2);padding:18px}
.pd-img img{width:100%;height:auto;object-fit:contain;max-height:420px}
.pd h1{font-size:26px;font-family:var(--mono);margin-bottom:.3em}
.pd .lead{color:var(--ink-2);font-size:15px}
.spec{border:1px solid var(--line);border-radius:var(--radius);margin-top:10px;overflow:hidden}
.spec details{border-bottom:1px solid var(--line)}
.spec details:last-child{border-bottom:0}
.spec summary{padding:13px 18px;cursor:pointer;font-weight:600;font-size:15px;background:var(--bg-2);list-style:none;display:flex;justify-content:space-between;align-items:center}
.spec summary::-webkit-details-marker{display:none}
.spec summary::after{content:"+";color:var(--steel);font-weight:400}
.spec details[open] summary::after{content:"–"}
.spec .inner{padding:6px 18px 14px}
.spec dl{display:grid;grid-template-columns:170px 1fr;gap:0;margin:0}
.spec dt{padding:8px 0;border-bottom:1px dashed var(--line);color:var(--steel);font-size:14px}
.spec dd{padding:8px 0;border-bottom:1px dashed var(--line);margin:0;font-size:14.5px}
.spec dd ul{margin:0;padding-left:1.1em}
.doclist{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.doclist a{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border:1px solid var(--line-2);border-radius:var(--radius);font-size:14px;background:#fff}
.doclist a:hover{border-color:var(--blue);background:var(--blue-l)}
.doclist a::before{content:"";width:9px;height:12px;background:var(--accent);border-radius:1px;display:inline-block}

/* ---------- table ---------- */
.tbl{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff}
.tbl th,.tbl td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl th{background:var(--bg-3);font-weight:600;font-size:14px}
.tbl tr:hover td{background:var(--bg-2)}
.tbl-wrap{border:1px solid var(--line);border-radius:var(--radius);overflow-x:auto}

/* ---------- features ---------- */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat li{list-style:none}
.feat .n{font-family:var(--mono);color:var(--accent);font-size:13px;font-weight:600;letter-spacing:.08em}
.feat h3{font-size:17px;margin:.2em 0 .3em}
.feat p{color:var(--ink-2);font-size:14px;margin:0}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.steps li{list-style:none;position:relative;padding-top:14px;border-top:3px solid var(--blue)}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;top:-14px;left:0;background:var(--blue);color:#fff;width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600}
.steps h3{font-size:16px;margin:14px 0 .3em}
.steps p{font-size:13.5px;color:var(--ink-2);margin:0}

/* ---------- industry chips ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{padding:7px 16px;border:1px solid var(--line-2);border-radius:20px;font-size:14px;background:#fff;color:var(--ink-2)}
.client-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px 28px;font-size:14px}
.client-list div{border-bottom:1px dashed var(--line);padding-bottom:8px}
.client-list b{color:var(--navy);font-weight:600;font-size:13px;display:block;margin-bottom:2px}
.client-list span{color:var(--ink-2);font-size:13.5px}

/* ---------- case ---------- */
.case{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.case .ch{background:var(--navy);color:#fff;padding:18px 22px}
.case .ch h3{margin:0 0 4px;font-size:19px}
.case .ch span{font-size:13px;color:#B9CBDA}
.case .cb{padding:22px}
.case .cb h4{font-size:14px;color:var(--accent);letter-spacing:.06em;margin:18px 0 6px}
.case .cb h4:first-child{margin-top:0}
.case .cb p,.case .cb li{font-size:14.5px;color:var(--ink-2)}
.case .cb p{margin-bottom:.6em}
.note{background:#FFF9E8;border-left:3px solid #E0A325;padding:14px 18px;font-size:13.5px;color:#6B5210;border-radius:0 var(--radius) var(--radius) 0}

/* ---------- contact ---------- */
.contact{display:grid;grid-template-columns:1fr 1.1fr;gap:40px}
.info-list{list-style:none;padding:0}
.info-list li{padding:12px 0;border-bottom:1px dashed var(--line)}
.info-list b{display:block;font-size:13px;color:var(--steel);font-weight:400;margin-bottom:2px}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;margin-bottom:5px;color:var(--ink-2)}
.field input,.field textarea,.field select{width:100%;padding:10px 12px;border:1px solid var(--line-2);border-radius:var(--radius);font-size:14.5px;font-family:inherit;background:#fff;color:var(--ink)}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--blue);outline:none}
.field .err{color:#B3261E;font-size:12.5px;margin-top:4px;display:none}
.field.bad input,.field.bad textarea{border-color:#B3261E}
.consent{font-size:13px;color:var(--ink-2);display:flex;gap:8px;align-items:flex-start;margin-bottom:14px}
.form .btn{width:100%;border:0;cursor:pointer;font-family:inherit}
.form-msg{margin-top:12px;font-size:14px;display:none;padding:12px 14px;border-radius:var(--radius);background:var(--blue-l);color:#13527F}

/* ---------- footer ---------- */
footer{background:var(--navy);color:#C6D6E2;padding:48px 0 0;margin-top:0}
footer h4{color:#fff;font-size:15px;margin-bottom:14px}
footer a{color:#C6D6E2}
footer a:hover{color:#fff}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.fgrid ul{list-style:none;padding:0;margin:0;font-size:14px}
.fgrid li{margin-bottom:8px}
.fbottom{border-top:1px solid rgba(255,255,255,.14);margin-top:36px;padding:18px 0 26px;font-size:13px;color:#9DB2C4;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.fbottom a{color:#9DB2C4}
.badge{display:inline-block;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:4px 10px;border-radius:2px;font-size:12px;margin:0 6px 6px 0}

/* ---------- responsive ---------- */
@media(max-width:1000px){
  .g4,.stats,.steps,.feat{grid-template-columns:repeat(2,1fr)}
  .fgrid{grid-template-columns:1fr 1fr}
  .pd{grid-template-columns:1fr;gap:24px}
  .contact{grid-template-columns:1fr}
  .filters{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  h1{font-size:25px}
  .hero{padding:44px 0 36px}
  .hero h1{font-size:27px}
  .g2,.g3,.g4,.feat,.steps,.stats,.client-list{grid-template-columns:1fr}
  .nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:8px 16px 16px;box-shadow:0 8px 20px rgba(0,0,0,.08)}
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav .cta{margin:12px 0 0;text-align:center}
  .burger{display:block}
  .hdr .wrap{position:relative}
  .spec dl{grid-template-columns:1fr}
  .spec dt{border-bottom:0;padding-bottom:0;color:var(--ink)}
  .fgrid{grid-template-columns:1fr}
  .filters{grid-template-columns:1fr}
  .form .row{grid-template-columns:1fr}
}