*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:#0b1016;color:#c8d4e0;line-height:1.65}
img{max-width:100%;height:auto;display:block}
a{color:#4fc3f7;text-decoration:none}
a:hover{text-decoration:underline}
ul{list-style:none}
.container{width:min(1140px,92vw);margin:0 auto}

.site-header{position:sticky;top:0;z-index:100;background:#111820;border-bottom:1px solid #1e2a38}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.55rem 0;gap:1rem}
.logo{font-weight:800;font-size:.9rem;color:#4fc3f7;letter-spacing:.03em;display:flex;align-items:center;gap:.45rem}
.logo-bar{width:16px;height:14px;display:flex;align-items:flex-end;gap:2px}
.logo-bar i{display:block;width:3px;background:#4fc3f7}
.logo-bar i:nth-child(1){height:6px}
.logo-bar i:nth-child(2){height:10px}
.logo-bar i:nth-child(3){height:14px}
.nav-main{display:flex;flex-wrap:wrap;gap:.25rem .95rem;font-size:.8rem}
.nav-main a{color:#6a7e90;font-weight:600}
.nav-main a.active,.nav-main a:hover{color:#4fc3f7;text-decoration:none}
.btn-nav{display:inline-block;background:#1565c0;color:#fff!important;padding:.36rem .9rem;font-weight:800;font-size:.76rem;text-decoration:none!important}
.btn-nav:hover{background:#1976d2}

.dash-bar{background:#0e1620;border-bottom:1px solid #1e2a38;font-size:.7rem;padding:.3rem 0;color:#6a7e90;font-family:Consolas,monospace}
.dash-bar .container{display:flex;flex-wrap:wrap;gap:.4rem 1.3rem}
.dash-bar em{color:#4fc3f7;font-style:normal;font-weight:700}

.section{padding:2.8rem 0}
.section-title{font-size:clamp(1.1rem,3vw,1.42rem);font-weight:800;margin-bottom:.35rem;color:#e8eef4}
.section-lead{color:#6a7e90;font-size:.86rem;margin-bottom:1.45rem;max-width:640px}

.panel{background:#111820;border:1px solid #1e2a38}

.footer{background:#080c10;padding:2.1rem 0 0;font-size:.82rem;color:#6a7e90}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:1.5rem;margin-bottom:1.3rem}
.footer h3{font-size:.84rem;color:#4fc3f7;margin-bottom:.5rem;font-weight:800}
.footer a{color:#6a7e90}
.footer-links{display:flex;flex-wrap:wrap;gap:.3rem .8rem}
.footer-bottom{border-top:1px solid #1e2a38;padding-top:.8rem;text-align:center;color:#4a5a68;font-size:.72rem}

.faq-list{display:flex;flex-direction:column;gap:.4rem}
.faq-item{background:#111820;border:1px solid #1e2a38;border-left:3px solid #4fc3f7}
.faq-q{width:100%;text-align:left;padding:.85rem 1rem;font-weight:800;font-size:.85rem;background:transparent;border:none;cursor:pointer;color:#e8eef4;display:flex;justify-content:space-between;align-items:center;font-family:inherit}
.faq-q::after{content:"+";font-size:1.05rem;color:#4fc3f7}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{display:none;padding:0 1rem .85rem;font-size:.82rem;color:#6a7e90}
.faq-item.open .faq-a{display:block}

.btn-dash{display:inline-block;background:#1565c0;color:#fff;padding:.52rem 1.1rem;font-weight:800;font-size:.84rem;text-decoration:none!important}
.btn-dash:hover{background:#1976d2}
.btn-ghost{display:inline-block;color:#4fc3f7;border:1px solid #4fc3f7;padding:.5rem 1.05rem;font-weight:700;font-size:.84rem;text-decoration:none!important;background:transparent}

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