:root{
  --navy:#0b2448;
  --navy2:#12396f;
  --gold:#d7a93b;
  --gold2:#f0ca73;
  --text:#1f2e45;
  --muted:#67758a;
  --line:#e6ebf2;
  --soft:#f5f7fb;
  --white:#fff;
  --shadow:0 16px 38px rgba(12,33,69,.10);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial, Helvetica, sans-serif;color:var(--text);background:#fff;line-height:1.7}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:min(1180px, calc(100% - 40px));margin:0 auto}
.lang-zh{display:none}
body.zh .lang-en{display:none}
body.zh .lang-zh{display:inline}
body:not(.zh) .lang-en{display:inline}
body:not(.zh) .lang-zh{display:none}
.topbar{background:var(--navy);color:#e9effa;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;gap:20px;padding:10px 0;align-items:center}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid rgba(11,36,72,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0}
.brand img{height:56px;width:auto}
.site-nav{display:flex;gap:22px;align-items:center}
.nav-link{font-weight:700;color:#1b3158;position:relative;padding:10px 0}
.nav-link.active,.nav-link:hover{color:var(--navy2)}
.nav-link.active:after,.nav-link:hover:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--gold)}
.lang-switch{display:flex;gap:8px}
.lang-btn,.nav-toggle{background:#fff;border:1px solid var(--line);padding:10px 12px;border-radius:10px;cursor:pointer}
.nav-toggle{display:none}
.hero{min-height:680px;background-size:cover;background-position:center;color:#fff;display:flex;align-items:center}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:38px;align-items:end;padding:88px 0}
.hero-content h1{font-size:54px;line-height:1.12;margin:14px 0 18px;font-weight:800;max-width:760px}
.hero-content p{font-size:18px;color:rgba(255,255,255,.92);max-width:660px}
.eyebrow{display:inline-block;text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:800;color:#d7e4ff}
.eyebrow.blue{color:var(--navy2)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 24px;border-radius:12px;font-weight:800;transition:.25s}
.btn-primary{background:linear-gradient(180deg, #1d4e95, #0b2448);color:#fff;box-shadow:0 12px 30px rgba(11,36,72,.28);border:none}
.btn-outline{border:1px solid rgba(255,255,255,.42);background:rgba(255,255,255,.06);color:#fff}
.btn:hover{transform:translateY(-2px)}
.glass{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);box-shadow:0 12px 40px rgba(0,0,0,.14);backdrop-filter:blur(10px)}
.hero-card{border-radius:24px;padding:24px 22px;max-width:360px;color:#fff;justify-self:end}
.hero-card h3{margin:0 0 14px;font-size:24px}
.info-mini{display:grid;gap:12px}
.info-mini div{display:grid;gap:4px;padding-top:10px;border-top:1px solid rgba(255,255,255,.12)}
.info-mini strong{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#dde6ff}
.section{padding:84px 0}
.section-soft{background:var(--soft)}
.section-white{background:#fff}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.stat-card,.basic-card,.contact-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow)}
.stat-card strong{display:block;font-size:30px;color:var(--navy2);margin-bottom:8px}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center}
.rounded{border-radius:22px}
.shadow{box-shadow:var(--shadow)}
.section-head{max-width:760px;margin-bottom:28px}
.section-head h2,.split h2,.page-hero h1,.cta-box h2{font-size:40px;line-height:1.18;margin:10px 0 12px;color:#102956}
.service-grid,.project-grid,.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.service-card,.project-card,.news-card{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}
.service-card img,.project-card img,.news-card img{width:100%;height:220px;object-fit:cover}
.service-body,.project-card div,.news-card div{padding:20px}
.service-body h3,.project-card h3,.news-card h3{margin:0 0 10px;font-size:24px;line-height:1.22;color:#102956}
.service-body p,.project-card p,.news-card p,.footer-text,.form-note,.basic-card p{color:var(--muted)}
.page-hero{background:linear-gradient(180deg,#f8fbff,#eef4ff);border-bottom:1px solid var(--line);padding:76px 0 54px}
.page-hero p{max-width:760px;color:var(--muted)}
.info-table{width:100%;border-collapse:collapse;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.info-table th,.info-table td{padding:16px 18px;border-bottom:1px solid var(--line);background:#fff;text-align:left;vertical-align:top}
.info-table th{width:35%;color:var(--navy);white-space:nowrap}
.service-listing{display:grid;gap:28px}
.service-detail{display:grid;grid-template-columns:.95fr 1.05fr;gap:28px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow)}
.service-detail img{height:260px;width:100%;object-fit:cover;border-radius:16px}
.service-detail h2{font-size:30px;margin:0 0 10px}
.tag{display:inline-block;background:#edf3ff;color:var(--navy2);padding:7px 12px;border-radius:999px;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.08em}
.news-date{display:inline-block;color:var(--navy2);font-weight:700;margin-bottom:8px}
.text-link{display:inline-block;margin-top:12px;color:var(--navy2);font-weight:800}
.contact-grid{align-items:start}
.contact-cards{display:grid;gap:14px;margin-top:18px}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.contact-form input,.contact-form textarea{width:100%;padding:15px 16px;border:1px solid #dce3ef;border-radius:12px;font:inherit}
.doc-img{width:100%;height:auto}
.cta-section{padding:0 0 84px}
.cta-box{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;border-radius:24px;padding:34px 36px;display:flex;justify-content:space-between;gap:22px;align-items:center;box-shadow:0 24px 45px rgba(11,36,72,.26)}
.cta-box h2{margin:0 0 10px;color:#fff}
.narrow{max-width:900px}
.site-footer{background:#071a49;color:#e6eefc;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.15fr .9fr .95fr;gap:30px;padding:54px 0 30px}
.footer-logo{height:54px;width:auto;margin-bottom:12px}
.footer-list{margin:0;padding-left:18px}
.footer-list li{margin-bottom:8px}
.copyright{text-align:center;padding:15px 0;border-top:1px solid rgba(255,255,255,.08);color:#c8d4f5;font-size:14px}
.floating-btn{position:fixed;right:20px;display:inline-flex;align-items:center;justify-content:center;padding:12px 16px;border-radius:999px;color:#fff;font-weight:700;box-shadow:var(--shadow);z-index:30}
.whatsapp-btn{bottom:78px;background:#25d366}
.contact-btn{bottom:22px;background:var(--navy2)}
@media (max-width:1080px){
  .hero-grid,.split,.service-detail,.footer-grid,.contact-grid{grid-template-columns:1fr}
  .service-grid,.project-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
  .hero-card{justify-self:start}
}
@media (max-width:760px){
  .topbar-inner{display:block;padding:10px 0}
  .header-inner{flex-wrap:wrap}
  .nav-toggle{display:block}
  .site-nav{display:none;flex-direction:column;align-items:flex-start;width:100%;padding-top:10px}
  .site-nav.open{display:flex}
  .hero{min-height:auto}
  .hero-grid{padding:72px 0 54px}
  .hero-content h1{font-size:38px}
  .section-head h2,.split h2,.page-hero h1,.cta-box h2{font-size:30px}
  .service-grid,.project-grid,.news-grid,.grid-4,.form-row{grid-template-columns:1fr}
  .container{width:min(100% - 28px, 1180px)}
  .cta-box{flex-direction:column;align-items:flex-start}
}