:root{
  --blue:#0064b4; --blue-d:#004f90; --purple:#281450; --ink:#161226; --muted:#5b6672;
  --line:#e6eaef; --bg:#ffffff; --bg-alt:#f6f8fb; --radius:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:min(1140px,92vw);margin:0 auto}
.muted{color:var(--muted)}
.center{text-align:center}
.tiny{font-size:13px}

/* nav */
.nav{position:fixed;inset:0 0 auto;z-index:50;background:rgba(255,255,255,0);
  transition:background .3s, box-shadow .3s, backdrop-filter .3s}
.nav.scrolled{background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(12px);box-shadow:0 1px 0 var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:78px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.02em;color:var(--purple)}
.mark{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--blue);color:#fff;font-size:17px}
.brand-text{font-size:17px}
.links{display:flex;gap:30px;font-size:15px}
.links a{color:#2b333d;position:relative;padding:4px 0}
.links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--blue);transition:width .25s}
.links a:hover::after{width:100%}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer}
.burger span{display:block;width:22px;height:2px;background:var(--ink);margin:4px 0;transition:.25s}

/* hero */
.hero{position:relative;padding:150px 0 90px;overflow:hidden;
  background:radial-gradient(900px 420px at 78% -10%,#e8f1ff 0%,transparent 60%),
             radial-gradient(700px 380px at 8% 10%,#f2f7ff 0%,transparent 55%);
}
.hero::after{content:"";position:absolute;right:-140px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:linear-gradient(135deg,rgba(11,98,208,.14),rgba(11,98,208,0));filter:blur(6px)}
.eyebrow{font-size:12px;letter-spacing:.22em;color:var(--blue);font-weight:700;margin:0 0 14px}
.hero h1{color:var(--purple);font-size:clamp(34px,5.2vw,58px);line-height:1.15;margin:0 0 22px;letter-spacing:-.01em;font-weight:800}
.hero h1 em{font-style:normal;color:var(--blue)}
.lead{font-size:clamp(15px,1.4vw,18px);color:var(--muted);max-width:640px;margin:0 0 34px}
.cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 26px;border-radius:10px;font-weight:600;font-size:15px;transition:.2s}
.btn.primary{background:var(--blue);color:#fff;box-shadow:0 8px 22px rgba(11,98,208,.25)}
.btn.primary:hover{background:#0a56b7;transform:translateY(-1px)}
.btn.ghost{border:1px solid var(--line);color:var(--ink);background:#fff}
.btn.ghost:hover{border-color:#c8d2de}
.hero-stats{display:flex;gap:56px;flex-wrap:wrap;list-style:none;padding:0;margin:64px 0 0;
  border-top:1px solid var(--line);padding-top:32px}
.hero-stats strong{display:block;font-size:32px;letter-spacing:-.02em}
.hero-stats strong small{font-size:16px;margin-left:2px;color:var(--blue)}
.hero-stats span{font-size:14px;color:var(--muted)}

/* sections */
.section{padding:96px 0}
.section.alt{background:var(--bg-alt)}
.section h2{color:var(--purple);font-size:clamp(26px,3.4vw,38px);margin:0 0 18px;letter-spacing:-.01em;font-weight:800}
.grid-2{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
.ticks{list-style:none;padding:0;margin:22px 0 0}
.ticks li{padding-left:26px;position:relative;margin-bottom:10px;color:#2b333d}
.ticks li::before{content:"";position:absolute;left:0;top:.55em;width:14px;height:8px;
  border-left:2px solid var(--blue);border-bottom:2px solid var(--blue);transform:rotate(-45deg)}
.about-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:0 18px 50px rgba(16,32,56,.06)}
.badge{display:inline-block;font-size:13px;color:var(--blue);background:#eaf2ff;padding:5px 12px;border-radius:999px;margin-bottom:18px}
.about-list div{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px dashed var(--line)}
.about-list div:last-child{border:0}
.about-list span{color:var(--muted)}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.cards.four{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}
.card:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(16,32,56,.08);border-color:#d6e0ec}
.card.plain{padding:24px}
.ico{font-size:13px;font-weight:700;color:var(--blue);letter-spacing:.12em;margin-bottom:14px}
.card h3{color:var(--purple);font-size:18px;margin:0 0 10px}
.card p{margin:0;color:var(--muted);font-size:14.5px}

/* contact */
.contact-list{list-style:none;padding:0;margin:26px 0 0}
.contact-list li{display:flex;gap:18px;padding:14px 0;border-bottom:1px solid var(--line)}
.contact-list span{width:44px;color:var(--muted);flex:none}
.contact-list a{color:var(--blue)}
.map-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 18px 50px rgba(16,32,56,.06)}
.map{height:380px;width:100%;background:#eef2f7;z-index:0}
.map-failed{display:grid;place-items:center;text-align:center;color:#8b96a3;
  background:repeating-linear-gradient(45deg,#f7f9fc,#f7f9fc 12px,#f2f6fb 12px,#f2f6fb 24px)}
.map-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:12px 16px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.map-actions{display:flex;gap:8px}
.map-actions a{border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:13px;
  color:var(--blue);background:#fff;text-decoration:none;white-space:nowrap}
.map-actions a:hover{border-color:var(--blue)}

/* footer */
.footer{border-top:1px solid var(--line);padding:44px 0 30px;background:#fff}
.footer-inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
.brand.small .mark{width:28px;height:28px;font-size:14px;border-radius:8px}
.brand.small .brand-text{font-size:15px}
.footer-meta{text-align:right;font-size:13px;color:var(--muted)}
.footer-meta p{margin:4px 0}

@media (max-width:900px){
  .links{position:fixed;inset:70px 0 auto;flex-direction:column;background:#fff;padding:18px 6vw 26px;
    gap:4px;border-bottom:1px solid var(--line);display:none}
  body.menu-open .links{display:flex}
  .links a{padding:12px 0;border-bottom:1px solid var(--line);font-size:16px}
  .burger{display:block}
  .grid-2{grid-template-columns:1fr;gap:36px}
  .cards,.cards.four{grid-template-columns:1fr}
  .hero{padding:120px 0 70px}
  .hero-stats{gap:28px 40px;margin-top:44px}
  .section{padding:70px 0}
  .footer-meta{text-align:left}
  .map{height:280px}
  .map-meta{font-size:13px}
}

/* capability strip (hero) */
.hero-stats.caps strong{font-size:22px;font-weight:800;letter-spacing:-.01em;display:flex;align-items:baseline;gap:6px}
.hero-stats.caps strong small{font-size:11px;font-weight:600;color:var(--blue);letter-spacing:.08em;text-transform:uppercase}
.hero-stats.caps span{font-size:13px;line-height:1.45;display:block;margin-top:4px;max-width:150px}

/* brands strip */
.brands{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0}
.brands-inner{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.brands-label{font-size:12px;letter-spacing:.2em;color:var(--muted);font-weight:700}
.brand-chip{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.04em;font-size:19px;color:#1b2430}
.brand-chip small{font-weight:500;font-size:12.5px;color:var(--muted);letter-spacing:0;border-left:1px solid var(--line);padding-left:10px}

@media (max-width:900px){
  .hero-stats.caps{gap:22px 28px}
  .hero-stats.caps span{max-width:none}
  .brands-inner{gap:16px 22px}
  .brand-chip{font-size:17px}
}

/* logo */
.brand .logo{height:32px;width:auto;display:block}
.nav-inner .brand .logo{height:50px}
.brand .brand-text{font-size:22px;font-weight:800;letter-spacing:.01em;color:var(--purple);white-space:nowrap}
.footer .brand.small .brand-text{font-size:14px;letter-spacing:.01em}
.footer .brand.small .logo{height:52px}
.footer .brand.small .brand-text{color:var(--purple);font-weight:700}
@media (max-width:900px){
  .nav-inner .brand .logo{height:42px}
  .brand .brand-text{font-size:14px}
  .footer .brand.small{flex-wrap:wrap}
}