*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:"Arial Black","PingFang SC","Microsoft YaHei",sans-serif;color:#111;line-height:1.55;background:#ffea00}
img{max-width:100%;height:auto;display:block}
a{color:#111;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
.box{width:min(1100px,92vw);margin:0 auto}

.site-header{background:#111;color:#ffea00;border-bottom:6px solid #111;position:sticky;top:0;z-index:30}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:.8rem;padding:.75rem 0}
.logo{font-weight:900;letter-spacing:.04em;font-size:.95rem;color:#ffea00}
.nav-main{display:flex;flex-wrap:wrap;gap:.45rem}
.nav-main a{background:#ffea00;color:#111;border:4px solid #111;padding:.28rem .7rem;font-size:.72rem;font-weight:900;box-shadow:4px 4px 0 #ff2d55}
.nav-main a.active{background:#00f0ff}
.btn-nav{background:#ff2d55;color:#fff;border:4px solid #111;padding:.32rem .8rem;font-size:.72rem;font-weight:900;box-shadow:4px 4px 0 #00f0ff}

.section{padding:2.4rem 0}
.h2{font-size:clamp(1.2rem,2.6vw,1.55rem);font-weight:900;margin-bottom:.35rem;text-transform:uppercase}
.lead{font-family:"Arial","Microsoft YaHei",sans-serif;font-weight:400;font-size:.9rem}

.footer{background:#111;color:#ffea00;border-top:6px solid #111;padding:1.8rem 0 0;font-size:.78rem;font-family:"Arial","Microsoft YaHei",sans-serif;font-weight:400}
.footer h3{color:#00f0ff;margin-bottom:.4rem;font-size:.8rem}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:1.1rem;margin-bottom:1rem}
.footer a{color:#ffea00;border-bottom:3px solid #ff2d55}
.footer-links{display:flex;flex-wrap:wrap;gap:.3rem .7rem}
.footer-bottom{border-top:4px solid #ffea00;padding:.7rem 0;text-align:center;font-size:.68rem}

.faq-item{border:5px solid #111;background:#fff;margin-bottom:.7rem;box-shadow:6px 6px 0 #111}
.faq-q{width:100%;text-align:left;padding:.85rem 1rem;font-weight:900;font-size:.86rem;background:#fff;border:none;display:flex;justify-content:space-between}
.faq-q::after{content:"+"}
.faq-item.open .faq-q{background:#00f0ff}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{display:none;padding:0 1rem .9rem;font-family:"Arial","Microsoft YaHei",sans-serif;font-weight:400;font-size:.82rem}
.faq-item.open .faq-a{display:block}

.btn-hi{display:inline-block;background:#ff2d55;color:#fff;border:5px solid #111;padding:.55rem 1.1rem;font-weight:900;box-shadow:6px 6px 0 #111}
.btn-hi2{display:inline-block;background:#00f0ff;color:#111;border:5px solid #111;padding:.55rem 1.1rem;font-weight:900;box-shadow:6px 6px 0 #111}

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