:root{
  --navy:#102a43;
  --navy-2:#1b3d5f;
  --steel:#5b7083;
  --orange:#e2662c;
  --light:#f3f5f7;
  --line:#dce3e9;
  --text:#22313f;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif;
  color:var(--text);
  background:#fff;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
header.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--navy);
  color:#fff;
  border-bottom:3px solid var(--orange);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;letter-spacing:.5px}
.brand-mark{
  width:34px;height:34px;border-radius:6px;
  background:linear-gradient(135deg,var(--orange),#f07f45);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:#fff;
}
.nav-links{display:flex;gap:26px;font-size:15px}
.nav-links a{opacity:.86;padding:4px 0;border-bottom:2px solid transparent}
.nav-links a:hover{opacity:1;border-bottom-color:var(--orange)}
.nav-links a.active{opacity:1;border-bottom-color:var(--orange)}

/* 首屏 */
.hero{
  background:linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 55%,#2a5273 100%);
  color:#fff;position:relative;overflow:hidden;
}
.hero:after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px),
                    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;padding-top:72px;padding-bottom:72px}
.hero-kicker{
  display:inline-block;font-size:13px;letter-spacing:2px;
  color:#ffb98c;border:1px solid rgba(255,185,140,.45);
  padding:4px 12px;border-radius:2px;margin-bottom:22px;
}
.hero-origin{font-size:15px;color:#9fb8cc;margin-top:10px;letter-spacing:.5px}
.hero-sub{font-size:22px;font-weight:600;color:#ffb98c;margin-top:18px;letter-spacing:1px}
.hero h1{font-size:44px;line-height:1.25;font-weight:800;letter-spacing:1px}
.hero p.lead{font-size:17px;color:#c9d8e5;margin-top:16px;max-width:640px}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 26px;border-radius:4px;font-size:15px;font-weight:600;
  transition:transform .15s ease,box-shadow .15s ease;
}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(226,102,44,.35)}
.btn-ghost{border:1px solid rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1)}

/* 通用区块 */
section{padding:64px 0}
section.alt{background:var(--light)}
.section-head{margin-bottom:38px}
.section-head h2{font-size:30px;font-weight:800;color:var(--navy)}
.section-head p{color:var(--steel);margin-top:8px;font-size:15px}
.rule{width:52px;height:3px;background:var(--orange);margin-top:14px}

/* 产品卡 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:8px;
  padding:26px 24px;transition:box-shadow .18s ease,transform .18s ease;
}
.card:hover{box-shadow:0 12px 28px rgba(16,42,67,.1);transform:translateY(-3px)}
.card .icon{
  width:44px;height:44px;border-radius:6px;background:#fdeee5;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.card h3{font-size:18px;color:var(--navy);margin-bottom:8px}
.card p{font-size:14.5px;color:var(--steel)}
.card ul{margin-top:12px;font-size:14px;color:var(--steel);padding-left:18px}
.card li{margin-bottom:4px}

/* 优势 */
.adv{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.adv-item{padding:18px 0;border-top:3px solid var(--orange)}
.adv-item h4{font-size:16px;color:var(--navy);margin-bottom:6px}
.adv-item p{font-size:14px;color:var(--steel)}

/* 联系条 */
.cta-band{background:var(--navy);color:#fff;padding:46px 0}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.cta-band h3{font-size:24px;font-weight:800}
.cta-band p{color:#c9d8e5;margin-top:6px;font-size:15px}
.phone-big{font-size:26px;font-weight:800;color:#ffb98c}

/* 页脚 */
footer.site-footer{background:#0c2135;color:#9fb3c4;padding:40px 0 26px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:26px}
.foot-grid h4{color:#fff;font-size:15px;margin-bottom:12px}
.foot-grid p,.foot-grid li{line-height:1.9}
.foot-grid li{list-style:none}
.copy{margin-top:28px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#7d93a5;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* 页面头（内页） */
.page-head{background:var(--navy);color:#fff;padding:52px 0}
.page-head h1{font-size:34px;font-weight:800}
.page-head p{color:#c1d2e0;margin-top:10px;font-size:15px}

/* 信息表 */
.info-table{border:1px solid var(--line);border-radius:8px;overflow:hidden}
.info-row{display:flex;border-bottom:1px solid var(--line);font-size:15px}
.info-row:last-child{border-bottom:none}
.info-row .k{width:130px;background:var(--light);padding:14px 18px;font-weight:600;color:var(--navy)}
.info-row .v{padding:14px 18px;color:var(--steel)}

@media(max-width:900px){
  .grid-3,.grid-2,.adv,.foot-grid{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  .nav-links{gap:14px;font-size:14px}
  .brand{font-size:17px}
  .info-row .k{width:104px;padding:12px 14px;font-size:14px}
  .info-row .v{padding:12px 14px;font-size:14px}
}
@media(max-width:640px){
  .nav-inner{height:auto;padding:12px 0;flex-direction:column;gap:10px;align-items:flex-start}
  .hero .container{padding-top:48px;padding-bottom:48px}
}