.mh{position:sticky;top:0;z-index:1100;border-bottom:1px solid var(--line);background:var(--header);backdrop-filter:blur(16px)}
.mh__inner{max-width:1180px;height:72px;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:20px}
.mh__brand{font-size:28px;font-weight:950;letter-spacing:-.04em;margin-right:auto;color:var(--ink);text-decoration:none}
.mh__brand:hover{color:var(--ink);text-decoration:none}
.mh__nav{display:flex;align-items:center;gap:6px}
.mh__nav a{padding:10px 14px;border:0;border-radius:12px;font-size:inherit;font-weight:850;color:var(--muted);text-decoration:none}
.mh__nav a:hover,.mh__nav a[aria-current="page"]{background:rgba(96,150,186,.16);color:var(--ink);text-decoration:none}
.mh__actions{display:flex;align-items:center;gap:8px}
.theme-toggle{width:52px;height:32px;padding:3px;border:1px solid var(--line);border-radius:999px;background:var(--surface);display:grid;grid-template-columns:1fr 1fr;align-items:center;cursor:pointer;color:var(--ink);box-shadow:none}
.theme-toggle span{position:static;width:24px;height:24px;display:grid;place-items:center;border-radius:50%;color:var(--muted);transform:none;opacity:1;margin:0}
.theme-toggle svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
html:not([data-theme="dark"]) .theme-toggle__sun,html[data-theme="dark"] .theme-toggle__moon{background:var(--icy);color:#17324D}
.mh__toggle{display:none;position:static;width:38px;height:34px;border:1px solid var(--line);border-radius:10px;background:var(--surface);padding:7px;cursor:pointer}
.mh__toggle span,.mh__toggle span:nth-child(1),.mh__toggle span:nth-child(2),.mh__toggle span:nth-child(3){position:static;display:block;height:2px;background:var(--ink);margin:4px 0;border-radius:2px;transform:none;opacity:1}
@media(max-width:760px){
  .mh__inner{height:64px;padding:0 16px}
  .mh__brand{font-size:24px}
  .mh__toggle{display:block}
  .mh__nav{display:none;position:absolute;top:64px;left:16px;right:16px;min-width:0;flex-direction:column;align-items:stretch;gap:6px;padding:10px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);z-index:1200}
  .mh__nav.is-open,.mh.open .mh__nav{display:flex}
  .mh__nav a{width:100%;padding:10px 14px}
}