:root{
  --navy:#0B2545; --navy2:#0F3157; --blue:#155A8F; --brand-blue:#1F5FD6;
  --yellow:#FFD633; --ink:#1b2430; --grey:#5b6775; --line:#e3e9f1; --bg:#f6f8fb;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",-apple-system,sans-serif;color:var(--ink);background:#fff;line-height:1.75;font-size:16px}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}
/* 顶栏 */
header{position:sticky;top:0;z-index:50;background:rgba(11,37,69,.96);color:#fff;backdrop-filter:blur(8px)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:1.5px;font-size:19px}
.logo i{width:26px;height:30px;display:inline-block;background:var(--yellow);
  -webkit-mask:radial-gradient(circle at 50% 42%,#000 42%,transparent 43%);clip-path:polygon(50% 0,100% 22%,100% 68%,50% 100%,0 68%,0 22%)}
.nav ul{display:flex;gap:26px;list-style:none;margin:0;padding:0;font-size:15px}
.nav ul a{opacity:.86}.nav ul a:hover{opacity:1;color:var(--yellow)}
.tel{border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:7px 16px;font-size:14px;letter-spacing:.6px}
.tel b{color:var(--yellow);font-weight:700}
/* 首屏 */
.hero{background:linear-gradient(135deg,#08203D 0%,#0F3157 48%,#155A8F 100%);color:#fff;padding:78px 0 84px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;right:-60px;top:-80px;width:420px;height:520px;background:var(--yellow);opacity:.16;transform:rotate(21deg)}
.hero:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:44px 44px}
.hero .wrap{position:relative;z-index:2}
.kicker{display:inline-block;font-size:13px;letter-spacing:3px;color:var(--yellow);border:1px solid rgba(255,214,51,.5);border-radius:999px;padding:6px 14px;margin-bottom:22px}
h1{font-size:46px;line-height:1.2;margin:0 0 16px;font-weight:800;letter-spacing:1px}
h1 em{font-style:normal;color:var(--yellow)}
.lead{font-size:18px;max-width:760px;color:#dce8f6;margin:0 0 30px}
.cta{display:inline-flex;align-items:center;gap:10px;background:var(--yellow);color:#0B2545;font-weight:800;font-size:17px;padding:14px 28px;border-radius:999px}
.cta.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4);margin-left:12px;font-weight:600}
/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:rgba(255,255,255,.16);margin-top:44px;border-radius:12px;overflow:hidden}
.stats div{background:rgba(8,26,48,.55);padding:20px 16px}
.stats b{display:block;font-size:26px;color:var(--yellow);font-weight:800;letter-spacing:.5px}
.stats span{font-size:13px;color:#cfe0f2}
/* 覆盖城市 */
.geo{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:8px}
.geo>div{background:#fff;border:1px solid #e3ecf6;border-radius:12px;padding:16px 18px}
.geo h3{margin:0 0 6px;font-size:15.5px;color:var(--navy);letter-spacing:.5px}
.geo p{margin:0;font-size:14px;line-height:1.95;color:#42566b}
/* 区块 */
section{padding:74px 0}
section.alt{background:var(--bg)}
.sec-h{font-size:13px;letter-spacing:4px;color:var(--brand-blue);font-weight:700;margin-bottom:10px}
h2{font-size:32px;margin:0 0 14px;font-weight:800;letter-spacing:.5px}
.sub{color:var(--grey);font-size:16.5px;max-width:780px;margin:0 0 40px}
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}.g2{grid-template-columns:repeat(2,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 24px;box-shadow:0 2px 10px rgba(20,40,70,.04)}
.card h3{margin:0 0 10px;font-size:19px}
.card p{margin:0;color:var(--grey);font-size:15.5px}
.card .tag{display:inline-block;font-size:12px;letter-spacing:1.5px;color:var(--brand-blue);background:#eef4ff;border-radius:999px;padding:4px 11px;margin-bottom:14px;font-weight:700}
.card.y{border-top:3px solid var(--yellow)}.card.b{border-top:3px solid var(--brand-blue)}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.steps li{list-style:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px}
.steps li:before{counter-increment:s;content:counter(s,decimal-leading-zero);display:block;font-size:26px;font-weight:800;color:var(--yellow);margin-bottom:8px}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:700;font-size:17px;list-style:none}
.faq summary:before{content:"＋ ";color:var(--brand-blue)}
.faq p{color:var(--grey);margin:12px 0 0}
.note{background:#fffbe8;border:1px solid #f0dfa8;border-radius:12px;padding:18px 20px;color:#6b5518;font-size:15px}
/* 页脚 */
footer{background:#08203D;color:#a9c0d8;padding:44px 0 30px;font-size:14px}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;margin-bottom:26px}
footer h4{color:#fff;font-size:16px;margin:0 0 12px}
footer a:hover{color:var(--yellow)}
footer .bot{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;font-size:13px;color:#7d94ac;line-height:2}
@media (max-width:860px){
  h1{font-size:33px}.stats{grid-template-columns:repeat(2,1fr)}.g3,.g4,.g2,.steps,.geo{grid-template-columns:1fr}
  .stats b{font-size:22px}
  .nav ul{display:none}footer .cols{grid-template-columns:1fr}
}

/* ===== 品牌 logo ===== */
.logo img.lm{height:40px;width:auto;margin-right:11px;vertical-align:-9px}
.foot-logo{height:132px;width:auto;margin-bottom:14px}
.brand-hero{display:flex;align-items:center;gap:34px;flex-wrap:wrap;margin-bottom:34px}
.brand-hero img{height:190px;width:auto}
.brand-hero p{margin:0;max-width:520px;color:#42566b;font-size:16px;line-height:2}