:root{
  --blue:#0b63c5; --blue-d:#084a94; --cyan:#17a2c7;
  --ink:#101a2b; --body:#42506b; --line:#e3e9f2; --bg:#f6f9fd;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--body); background:#fff; line-height:1.75; -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.container{max-width:1140px;margin:0 auto;padding:0 22px}

.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px}
.brand{display:flex;flex-direction:column;line-height:1.15}
.brand-mark{font-size:20px;font-weight:800;color:var(--ink);letter-spacing:.5px}
.brand-sub{font-size:10px;letter-spacing:2.2px;color:var(--cyan);font-weight:600}
.nav{display:flex;align-items:center;gap:26px;font-size:15px;font-weight:500}
.nav a{color:var(--ink);transition:color .18s}
.nav a:hover{color:var(--blue)}
.nav-tel{color:var(--blue)!important;font-weight:700;white-space:nowrap}

.hero{
  background:
    radial-gradient(900px 420px at 82% -10%, rgba(23,162,199,.20), transparent 62%),
    linear-gradient(160deg,#f2f7ff 0%,#ffffff 58%);
  border-bottom:1px solid var(--line);
  padding:88px 0 92px;
}
.hero-eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.6px;
  color:var(--blue);background:rgba(11,99,197,.09);padding:6px 14px;border-radius:999px;margin-bottom:22px;
}
.hero h1{font-size:clamp(28px,4.4vw,46px);color:var(--ink);line-height:1.25;letter-spacing:-.5px;margin-bottom:20px}
.hero-lead{font-size:clamp(15px,1.6vw,17.5px);max-width:820px;color:var(--body)}
.hero-lead strong{color:var(--ink)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.btn{display:inline-block;padding:13px 26px;border-radius:8px;font-size:15px;font-weight:600;transition:.2s}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px -8px rgba(11,99,197,.7)}
.btn-primary:hover{background:var(--blue-d);transform:translateY(-1px)}
.btn-ghost{border:1.5px solid var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}

.section{padding:78px 0}
.section-alt{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-title{font-size:clamp(22px,2.6vw,30px);color:var(--ink);letter-spacing:-.3px;position:relative;padding-left:16px}
.section-title::before{content:"";position:absolute;left:0;top:.28em;width:5px;height:1.05em;border-radius:3px;background:linear-gradient(180deg,var(--blue),var(--cyan))}
.section-sub{margin:12px 0 34px;padding-left:16px;font-size:14.5px}

.grid{display:grid;gap:22px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;transition:.22s}
.card:hover{transform:translateY(-3px);box-shadow:0 16px 34px -20px rgba(16,26,43,.35);border-color:#cfe0f5}
.card-thumb{
  height:126px;border-radius:8px;margin-bottom:16px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#eef5ff,#e6f6fb);color:#9db4d1;font-size:13px;letter-spacing:1px;
}
.card h3{font-size:17px;color:var(--ink);margin-bottom:8px}
.card p{font-size:14px}

.about-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:40px;align-items:start;margin-top:30px}
.about-grid p{margin-bottom:16px}
.muted{color:#8a9ab4}
.stats{list-style:none;display:grid;gap:14px}
.stats li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px;display:flex;flex-direction:column}
.stat-num{font-size:26px;font-weight:800;color:var(--blue);line-height:1.2}
.stat-label{font-size:13px;color:#8a9ab4}

.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}
.contact-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 22px;display:flex;flex-direction:column;gap:8px}
.contact-label{font-size:12.5px;letter-spacing:1px;color:#8a9ab4;font-weight:600}
.contact-value{font-size:16px;color:var(--ink);font-weight:600}
.contact-value a{color:var(--blue)}

.site-footer{background:var(--ink);color:#a9b7cd;padding:30px 0;font-size:13.5px;text-align:center}
.footer-note{margin-top:6px;color:#6f7f99}

@media (max-width:900px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:1fr;gap:26px}
  .contact-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .header-inner{height:auto;flex-direction:column;align-items:flex-start;padding:14px 0;gap:10px}
  .nav{gap:16px;font-size:14px;flex-wrap:wrap}
  .grid-4,.contact-grid{grid-template-columns:1fr}
  .hero{padding:60px 0 64px}
  .section{padding:56px 0}
}