:root{
  --primary:#15396b;
  --primary-d:#0f2a52;
  --accent:#e8552a;
  --accent-d:#c8431f;
  --ink:#243244;
  --muted:#6a7484;
  --bg:#ffffff;
  --bg2:#f4f7fb;
  --line:#e6ebf2;
  --radius:14px;
  --shadow:0 10px 30px rgba(20,40,80,.08);
}
*{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:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block;border-radius:10px}
.container{width:min(1140px,92%);margin:0 auto}
section{padding:90px 0}
.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* navbar */
.navbar{position:fixed;top:0;left:0;right:0;z-index:50;padding:18px 0;transition:.3s}
.navbar.scrolled{background:rgba(255,255,255,.96);backdrop-filter:blur(8px);box-shadow:0 4px 20px rgba(20,40,80,.08);padding:12px 0}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.logo{font-size:22px;font-weight:800;color:#fff;letter-spacing:1px}
.navbar.scrolled .logo{color:var(--primary)}
.logo span{color:var(--accent)}
.nav-menu{display:flex;gap:30px}
.nav-menu a{color:#dce6f5;font-weight:500;transition:.2s}
.navbar.scrolled .nav-menu a{color:var(--ink)}
.nav-menu a:hover,.nav-menu a.active{color:var(--accent)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:26px;height:2px;background:#fff;transition:.3s}
.navbar.scrolled .nav-toggle span{background:var(--ink)}

/* hero */
.hero{min-height:100vh;display:flex;align-items:center;color:#fff;position:relative;overflow:hidden;
  background:radial-gradient(1000px 500px at 75% 15%,#1d4e8f 0%,transparent 60%),linear-gradient(135deg,#0f2a52,#15396b 55%,#1d4e8f)}
.hero::before{content:"";position:absolute;inset:0;opacity:.12;
  background-image:linear-gradient(rgba(255,255,255,.4) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.4) 1px,transparent 1px);
  background-size:48px 48px}
.hero .container{position:relative;z-index:2}
.hero h1{font-size:clamp(34px,6vw,60px);line-height:1.2;font-weight:800;margin-bottom:22px}
.hero .hl{color:var(--accent)}
.hero .sub{font-size:clamp(16px,2.2vw,20px);max-width:640px;color:#d7e2f2;margin-bottom:34px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 30px;border-radius:50px;font-weight:600;transition:.25s;cursor:pointer;border:2px solid transparent}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-d);transform:translateY(-2px)}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}

/* section title */
.section-title{text-align:center;font-size:clamp(26px,4vw,38px);font-weight:800;color:var(--primary);margin-bottom:12px}
.section-sub{text-align:center;color:var(--muted);max-width:680px;margin:0 auto 50px}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:26px}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:34px 28px;box-shadow:var(--shadow);transition:.3s}
.card:hover{transform:translateY(-6px);border-color:var(--accent)}
.card-icon{width:54px;height:54px;border-radius:14px;background:linear-gradient(135deg,var(--primary),#1d4e8f);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;margin-bottom:18px}
.card h3{font-size:20px;margin-bottom:10px;color:var(--primary)}
.card p{color:var(--muted);font-size:15px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:24px;text-align:center}
.stat{background:var(--bg2);border-radius:var(--radius);padding:30px 18px}
.num{font-size:42px;font-weight:800;color:var(--accent);display:block;line-height:1}
.stat-label{color:var(--muted);margin-top:8px;font-size:14px}

/* cta */
.cta{background:linear-gradient(135deg,var(--primary),#1d4e8f);color:#fff;text-align:center;border-radius:20px;padding:60px 30px}
.cta h2{font-size:clamp(24px,4vw,34px);margin-bottom:14px}
.cta p{color:#d7e2f2;margin-bottom:26px}

/* footer */
.footer{background:var(--primary-d);color:#cdd9ec;padding:50px 0 26px}
.footer .container{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between}
.footer h4{color:#fff;margin-bottom:14px;font-size:17px}
.footer a:hover{color:var(--accent)}
.footer .copy{width:100%;text-align:center;border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:18px;color:#8fa3c4;font-size:14px}

/* page hero */
.page-hero{background:linear-gradient(135deg,var(--primary),#1d4e8f);color:#fff;padding:150px 0 70px;text-align:center}
.page-hero h1{font-size:clamp(28px,5vw,44px);font-weight:800}
.page-hero p{color:#d7e2f2;margin-top:12px;max-width:680px;margin-inline:auto}

/* about */
.lead{font-size:18px;color:var(--ink);max-width:820px;margin:0 auto 10px;text-align:center}
.equip{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-top:30px}
.equip li{list-style:none;background:var(--bg2);padding:16px 18px;border-radius:12px;border-left:4px solid var(--accent);font-weight:500}

/* steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px;counter-reset:step;margin-top:20px}
.step{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative}
.step::before{counter-increment:step;content:"0" counter(step);font-size:30px;font-weight:800;color:var(--accent);display:block;margin-bottom:8px}
.step h4{color:var(--primary);margin-bottom:6px}
.step p{color:var(--muted);font-size:14px}

/* services */
.service-block{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-bottom:70px}
.service-block:nth-child(even) .service-media{order:2}
.service-block h3{font-size:24px;color:var(--primary);margin-bottom:14px}
.service-block p{color:var(--muted)}
.service-block ul{list-style:none;margin-top:14px}
.service-block li{padding:8px 0 8px 26px;position:relative;color:var(--ink)}
.service-block li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:800}
.service-media img{box-shadow:var(--shadow);border-radius:16px;width:100%;height:340px;object-fit:cover}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;margin-top:30px}
.gallery img{height:200px;object-fit:cover;width:100%}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.contact-info h3{color:var(--primary);margin:18px 0 8px;font-size:19px}
.contact-info p{color:var(--muted)}
.info-row{display:flex;gap:12px;align-items:flex-start;margin-bottom:10px}
.info-row .k{color:var(--accent);font-weight:700;min-width:48px}
.license{margin-top:26px;border:1px solid var(--line);border-radius:14px;padding:16px;background:var(--bg2);text-align:center}
.license img{max-height:260px;margin:0 auto;border-radius:8px}
.license small{display:block;color:var(--muted);margin-top:8px}
.form-wrap{background:var(--bg2);padding:30px;border-radius:16px}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;margin-bottom:6px;color:var(--primary)}
.field input,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
.field textarea{min-height:110px;resize:vertical}
#formNote{margin-top:10px;font-weight:600;min-height:20px}

/* responsive */
@media(max-width:820px){
  .nav-menu{position:fixed;top:64px;right:0;left:0;flex-direction:column;background:#fff;padding:20px 6%;gap:6px;box-shadow:0 12px 30px rgba(20,40,80,.12);transform:translateY(-140%);transition:.3s}
  .nav-menu.open{transform:none}
  .nav-menu a{color:var(--ink)!important;padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:flex}
  .service-block,.contact-grid{grid-template-columns:1fr}
  .service-block:nth-child(even) .service-media{order:0}
  section{padding:60px 0}
}