*,*::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",sans-serif;background:#0c1824;color:#d0e4f0;line-height:1.65}
img{max-width:100%;height:auto;display:block}
a{color:#4ecdc4;text-decoration:none}
a:hover{text-decoration:underline}
ul{list-style:none}
.container{width:min(1120px,92vw);margin:0 auto}

.site-header{position:sticky;top:0;z-index:100;background:#081018;border-bottom:2px solid #2a6a8a}
.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:#d0e4f0;display:flex;align-items:center;gap:.5rem}
.logo-globe{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,#2a8a6a 0%,#1a4a6a 50%,#8a4a2a 100%);border:2px solid #4ecdc4;position:relative;overflow:hidden}
.logo-globe::after{content:"";position:absolute;bottom:0;left:0;right:0;height:50%;background:linear-gradient(180deg,#c4845a,#8a5a3a);clip-path:polygon(0 100%,20% 40%,50% 60%,80% 35%,100% 55%,100% 100%)}
.nav-main{display:flex;flex-wrap:wrap;gap:.35rem 1.1rem;font-size:.88rem}
.nav-main a{color:#6a8aa0;font-weight:600}
.nav-main a.active,.nav-main a:hover{color:#4ecdc4;text-decoration:none}
.btn-nav{display:inline-block;background:#4ecdc4;color:#081018!important;padding:.45rem 1.05rem;font-weight:800;font-size:.85rem;text-decoration:none!important}
.btn-nav:hover{background:#6eddd6}

.section{padding:3.5rem 0}
.section-title{font-size:clamp(1.28rem,3vw,1.65rem);font-weight:800;margin-bottom:.45rem;color:#d0e4f0}
.section-lead{color:#6a8aa0;font-size:.92rem;margin-bottom:1.85rem;max-width:640px}

.footer{background:#060e16;border-top:2px solid #2a6a8a;padding:2.5rem 0 0;font-size:.86rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem;margin-bottom:2rem}
.footer h3{font-size:.92rem;color:#4ecdc4;margin-bottom:.7rem}
.footer a{color:#6a8aa0}
.footer-links{display:flex;flex-wrap:wrap;gap:.4rem 1rem}
.footer-bottom{border-top:1px solid #1a3040;padding-top:1rem;text-align:center;color:#4a6a80;font-size:.78rem}

.faq-list{display:flex;flex-direction:column;gap:.5rem}
.faq-item{background:#101c28;border:1px solid #2a4a5a;border-left:3px solid #4ecdc4}
.faq-q{width:100%;text-align:left;padding:1rem 1.15rem;font-weight:700;font-size:.92rem;background:transparent;border:none;cursor:pointer;color:#d0e4f0;display:flex;justify-content:space-between;align-items:center;font-family:inherit}
.faq-q::after{content:"▼";font-size:.65rem;color:#4ecdc4;transition:transform .2s}
.faq-item.open .faq-q::after{transform:rotate(180deg)}
.faq-a{display:none;padding:0 1.15rem 1rem;font-size:.88rem;color:#6a8aa0;line-height:1.7}
.faq-item.open .faq-a{display:block}

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