*,*::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","Consolas",monospace,sans-serif;background:#0a0a0a;color:#e0e0e0;line-height:1.65}
img{max-width:100%;height:auto;display:block}
a{color:#c6ff00;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:#0a0a0a;border-bottom:1px solid #c6ff00}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.7rem 0;gap:1rem}
.logo{font-weight:900;font-size:1.05rem;color:#c6ff00;letter-spacing:.1em;font-family:"Consolas",monospace}
.logo span{color:#e0e0e0;font-weight:600}
.nav-main{display:flex;flex-wrap:wrap;gap:.35rem 1.1rem;font-size:.86rem;font-family:"PingFang SC",sans-serif}
.nav-main a{color:#6a6a6a;font-weight:600}
.nav-main a.active,.nav-main a:hover{color:#c6ff00;text-decoration:none}
.btn-nav{display:inline-block;background:#c6ff00;color:#0a0a0a!important;padding:.45rem 1.05rem;font-weight:900;font-size:.84rem;text-decoration:none!important;font-family:"PingFang SC",sans-serif}
.btn-nav:hover{background:#d4ff33}

.section{padding:3.5rem 0}
.section-title{font-size:clamp(1.25rem,3vw,1.6rem);font-weight:900;margin-bottom:.45rem;color:#c6ff00;font-family:"Consolas",monospace;letter-spacing:.06em}
.section-lead{color:#6a6a6a;font-size:.9rem;margin-bottom:1.85rem;max-width:640px;font-family:"PingFang SC",sans-serif}

.footer{background:#050505;border-top:1px solid #c6ff00;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:.9rem;color:#c6ff00;margin-bottom:.7rem;font-family:"Consolas",monospace}
.footer a{color:#6a6a6a}
.footer-links{display:flex;flex-wrap:wrap;gap:.4rem 1rem}
.footer-bottom{border-top:1px solid #1a1a1a;padding-top:1rem;text-align:center;color:#4a4a4a;font-size:.78rem}

.faq-list{display:flex;flex-direction:column;gap:1px;background:#c6ff00}
.faq-item{background:#121212}
.faq-q{width:100%;text-align:left;padding:1rem 1.15rem;font-weight:700;font-size:.9rem;background:#121212;border:none;cursor:pointer;color:#e0e0e0;display:flex;justify-content:space-between;align-items:center;font-family:"PingFang SC",sans-serif}
.faq-q::after{content:">";font-size:.9rem;color:#c6ff00;font-family:"Consolas",monospace;transition:transform .2s}
.faq-item.open .faq-q::after{transform:rotate(90deg)}
.faq-a{display:none;padding:0 1.15rem 1rem;font-size:.86rem;color:#6a6a6a;line-height:1.7;background:#0a0a0a;font-family:"PingFang SC",sans-serif}
.faq-item.open .faq-a{display:block}

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