.ai2-header{
  height:64px;display:grid;grid-template-columns:240px 1fr 240px;align-items:center;
  padding:0 28px;border-bottom:1px solid #0d1b2d;background:rgba(2,7,14,.96);
  position:sticky;top:0;z-index:9000;backdrop-filter:blur(12px)
}
.ai2-header__brand{display:flex;align-items:center;gap:12px;min-width:0}
.ai2-header__mark{font-size:26px;font-weight:800;letter-spacing:-.08em;
  background:linear-gradient(140deg,#8d6eff 0%,#4f8df7 45%,#64e1bb 100%);
  -webkit-background-clip:text;color:transparent;white-space:nowrap}
.ai2-header__mark sup{font-size:11px;top:-.9em;position:relative;margin-left:1px}
.ai2-header__identity{
  font:7.5px/1.15 ui-monospace,SFMono-Regular,Menlo,monospace;
  color:#8b99ab;letter-spacing:.12em;text-transform:uppercase;
  max-width:74px
}
.ai2-header__nav{display:flex;align-items:center;justify-content:center;gap:28px;height:100%}
.ai2-header__nav-wrap{position:relative;height:100%;display:flex;align-items:center}
.ai2-header__nav a{
  height:100%;display:flex;align-items:center;gap:4px;color:#9eabbc;
  font-size:11px;border-bottom:2px solid transparent;padding-top:1px
}
.ai2-header__nav a.active{color:#e8f5ff;border-bottom-color:var(--ai2-cyan)}
.ai2-header__nav .chev{font-size:8px;opacity:.55}
.ai2-header__page-menu{
  position:absolute;top:56px;left:50%;transform:translateX(-50%);
  min-width:190px;padding:7px;border:1px solid var(--ai2-border);border-radius:10px;
  background:rgba(4,12,23,.98);box-shadow:0 22px 70px rgba(0,0,0,.45);display:none
}
.ai2-header__nav-wrap.open .ai2-header__page-menu{display:block}
.ai2-header__page-menu button{
  display:block;width:100%;text-align:left;border:0;border-radius:7px;background:transparent;
  color:#9fb1c6;padding:9px 10px;font-size:9px;cursor:pointer
}
.ai2-header__page-menu button:hover{background:#0a1727;color:#eef7ff}
.ai2-header__right{display:flex;align-items:center;justify-content:flex-end;gap:12px}
.ai2-chain{
  border:1px solid #19433a;background:#07130f;color:#c8d8d2;border-radius:999px;
  padding:9px 13px;font-size:10px;display:flex;gap:7px;align-items:center
}
.ai2-chain .dot{width:6px;height:6px;border-radius:50%;background:#4de2a7;box-shadow:0 0 10px rgba(77,226,167,.45)}
.ai2-account{
  width:38px;height:38px;border-radius:50%;border:1px solid #5c4925;background:#0a1018;
  color:#e2c36b;display:grid;place-items:center;font-size:15px;cursor:pointer
}
.ai2-account-menu{
  position:fixed;top:70px;right:24px;z-index:10000;width:255px;
  border:1px solid var(--ai2-border);border-radius:12px;background:rgba(5,13,24,.98);
  box-shadow:0 24px 80px rgba(0,0,0,.55);padding:8px
}
.ai2-account-menu[hidden]{display:none}
.ai2-account-menu__head{padding:9px 10px 12px;border-bottom:1px solid #ffffff08}
.ai2-account-menu__head strong{font-size:11px}.ai2-account-menu__head small{display:block;margin-top:3px;color:#71849a;font-size:8px}
.ai2-account-menu button{width:100%;text-align:left;border:0;background:transparent;color:#9eb0c5;padding:9px 10px;border-radius:7px;font-size:9px;cursor:pointer}
.ai2-account-menu button:hover{background:#0a1727;color:#eff7ff}
@media(max-width:900px){
  .ai2-header{grid-template-columns:170px 1fr 120px;padding:0 14px}
  .ai2-header__identity{display:none}.ai2-header__nav{gap:14px;overflow:auto;justify-content:flex-start}
  .ai2-chain{display:none}
}

.ai2-header__master{display:block;width:52px;height:52px;object-fit:contain;flex-shrink:0}