.site-header{display:flex;align-items:center;justify-content:space-between;gap:2rem;padding:1.4rem 0;position:relative;z-index:10}
.site-header .brand{flex-shrink:0;line-height:1.3}
.site-nav{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:.35rem;font-size:.9375rem;line-height:1.4}
.site-nav>a,.site-nav summary{display:flex;align-items:center;gap:.5rem;padding:.7rem .85rem;min-height:44px;border-radius:7px;color:var(--muted);text-decoration:none;white-space:nowrap;font-weight:500;cursor:pointer}
.site-nav>a:hover,.site-nav summary:hover,.site-nav details[open]>summary{color:var(--ink);background:#96afff0c}
.site-nav [aria-current=page]{color:var(--ink)}
.site-nav details{position:relative}
.site-nav summary{list-style:none}
.site-nav summary::-webkit-details-marker{display:none}
.site-nav summary::after{content:'';width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);margin-left:.25rem;margin-top:-3px}
.site-nav details[open]>summary::after{transform:rotate(225deg);margin-top:3px}
.site-nav .nav-menu{position:absolute;top:calc(100% + .6rem);right:0;min-width:245px;padding:.5rem;border:1px solid var(--line);border-radius:10px;background:#111927;box-shadow:0 18px 50px #0007;display:grid;gap:3px}
.site-nav .nav-menu a{display:block;padding:.7rem .9rem;border-radius:5px;min-height:44px;color:#c7cedd;text-decoration:none;font-size:.9375rem;white-space:nowrap}
.site-nav .nav-menu a:hover,.site-nav .nav-menu a:focus-visible{color:var(--ink);background:#96afff12}
.site-nav>a.lab-link{margin-left:.65rem;background:#c4f55f;color:#13171d;border:1px solid #c4f55f;font-weight:700;padding:.7rem 1rem;border-radius:8px}
.site-nav>a.lab-link:hover{background:#d5ff82;color:#13171d}
.site-nav .lab-link svg{width:18px;height:18px;flex-shrink:0}
.site-nav :focus-visible{outline:2px solid var(--violet);outline-offset:4px}
@media(max-width:900px){.site-header{gap:1rem}.site-nav{gap:.15rem}.site-nav>a,.site-nav summary{padding:.65rem .6rem}.site-nav>a.lab-link{margin-left:.25rem}}
@media(max-width:700px){.site-header{align-items:flex-start;flex-direction:column;gap:1rem;padding:1.25rem 0}.site-nav{width:100%;justify-content:flex-start;gap:.15rem}.site-nav>a.lab-link{margin-left:auto}.site-nav .nav-menu{left:0;right:auto;min-width:220px;max-width:calc(100vw - 2rem)}}
@media(max-width:420px){.site-nav>a,.site-nav summary{font-size:.875rem;padding:.6rem .5rem}.site-nav>a.lab-link{padding:.6rem .7rem}.site-nav .lab-link svg{display:none}.site-nav .research-menu .nav-menu{left:-3.8rem}.site-nav .experiments-menu .nav-menu{left:auto;right:-1rem}}