*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;background:#eef3f7;color:#1e2a36;line-height:1.65}
img{max-width:100%;height:auto;display:block}
a{color:#1a6b9a;text-decoration:none}
a:hover{text-decoration:underline}
ul{list-style:none}
.container{width:min(1100px,92vw);margin:0 auto}

.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid #d5e0ea}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.7rem 0;gap:1rem}
.logo{font-weight:800;font-size:1.05rem;color:#1e2a36;display:flex;align-items:center;gap:.5rem}
.logo-sun{width:18px;height:18px;border-radius:50%;background:#f4b942;border:2px solid #f4d78a}
.nav-main{display:flex;flex-wrap:wrap;gap:.3rem 1.1rem;font-size:.86rem}
.nav-main a{color:#5a6e80;font-weight:600}
.nav-main a.active,.nav-main a:hover{color:#1a6b9a;text-decoration:none}
.btn-nav{display:inline-block;background:#1a6b9a;color:#fff!important;padding:.45rem 1.05rem;font-weight:800;font-size:.82rem;text-decoration:none!important}
.btn-nav:hover{background:#155880}

.section{padding:3.1rem 0}
.section-title{font-size:clamp(1.2rem,3vw,1.5rem);font-weight:800;margin-bottom:.4rem;color:#1e2a36}
.section-lead{color:#5a6e80;font-size:.9rem;margin-bottom:1.7rem;max-width:620px}

.footer{background:#1e2a36;color:#9ab0c0;padding:2.3rem 0 0;font-size:.85rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:1.8rem;margin-bottom:1.6rem}
.footer h3{font-size:.9rem;color:#f4b942;margin-bottom:.6rem;font-weight:800}
.footer a{color:#9ab0c0}
.footer-links{display:flex;flex-wrap:wrap;gap:.35rem .9rem}
.footer-bottom{border-top:1px solid #2c3c4a;padding-top:.9rem;text-align:center;color:#6a7e8e;font-size:.76rem}

.faq-list{display:flex;flex-direction:column;gap:.5rem}
.faq-item{background:#fff;border:1px solid #d5e0ea;border-left:4px solid #1a6b9a}
.faq-q{width:100%;text-align:left;padding:.95rem 1.1rem;font-weight:800;font-size:.9rem;background:transparent;border:none;cursor:pointer;color:#1e2a36;display:flex;justify-content:space-between;align-items:center;font-family:inherit}
.faq-q::after{content:"+";font-size:1.15rem;color:#1a6b9a}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{display:none;padding:0 1.1rem .95rem;font-size:.86rem;color:#5a6e80;line-height:1.7}
.faq-item.open .faq-a{display:block}

.wx-stats{display:flex;flex-wrap:wrap;gap:.6rem}
.wx-stat{background:#fff;border:1px solid #d5e0ea;padding:.7rem .85rem;min-width:92px;text-align:center}
.wx-stat strong{display:block;font-size:1.15rem;color:#1a6b9a;font-weight:800}
.wx-stat span{font-size:.7rem;color:#5a6e80}

.btn-sky{display:inline-block;background:#1a6b9a;color:#fff!important;padding:.62rem 1.3rem;font-weight:800;font-size:.88rem;text-decoration:none!important}
.btn-sky:hover{background:#155880}
.btn-line{display:inline-block;color:#1a6b9a;border:2px solid #1a6b9a;padding:.56rem 1.2rem;font-weight:700;font-size:.88rem;text-decoration:none!important;background:#fff}

@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr}
}