:root{
  --carbon:#101014;
  --panel:#18181e;
  --line:#2a2a34;
  --red:#e10600;
  --cyan:#00d4ff;
  --silver:#c8c8cc;
  --mute:#8a8a94;
  --ink:#f2f2f4;
  --max:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{background:var(--carbon)}
body{
  font-family:"Segoe UI","DIN Alternate","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--carbon);line-height:1.65;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{list-style:none}
button{font-family:inherit}
.container{width:min(var(--max),calc(100% - 40px));margin:0 auto}
.flag{height:6px;background:repeating-linear-gradient(90deg,#111 0 8px,#fff 8px 16px,#111 16px 24px,#e10600 24px 32px)}
.site-header{position:sticky;top:0;z-index:80;background:#0c0c10;border-bottom:1px solid var(--line)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:58px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.16em;font-size:12px;color:var(--cyan)}
.brand-mark{
  width:28px;height:28px;background:var(--red);color:#fff;
  clip-path:polygon(0 0,100% 0,100% 70%,50% 100%,0 70%);
  display:grid;place-items:center;font-size:11px;
}
.nav{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--mute)}
.nav a[aria-current="page"]{color:var(--cyan);border-bottom:2px solid var(--cyan)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:40px;padding:0 16px;border:1px solid var(--cyan);
  background:transparent;color:var(--cyan);font-size:13px;font-weight:800;cursor:pointer;
}
.btn-fill{background:var(--red);border-color:var(--red);color:#fff}
.kicker{display:block;font-size:11px;letter-spacing:.22em;color:var(--red);font-weight:800;margin-bottom:8px}
.section-head{margin-bottom:20px}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.2;margin-bottom:8px}
.section-head p{color:var(--mute);max-width:640px}
.footer{padding:44px 0 20px;background:#0a0a0c;color:var(--silver)}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr;gap:24px}
.footer h3,.footer h4{margin-bottom:12px;color:var(--cyan);font-size:16px}
.footer p,.footer a,.footer li{color:var(--mute);font-size:14px}
.footer ul{display:grid;gap:8px}
.copyright{margin-top:24px;padding-top:14px;border-top:1px solid var(--line);font-size:12px}
img[data-src]{min-height:120px;background:#1c1c24}
.below-fold{content-visibility:auto;contain-intrinsic-size:auto 480px}
@media(max-width:720px){.nav{display:none}.footer-grid{grid-template-columns:1fr}}