/* header.css — dark mirror nav */
#site-header{position:fixed;top:0;left:0;right:0;z-index:900;padding:0 2.5rem;background:transparent;transition:background .4s ease,backdrop-filter .4s ease,border-color .4s ease}
#site-header.scrolled{background:rgba(8,8,15,.72);backdrop-filter:blur(24px) saturate(160%);-webkit-backdrop-filter:blur(24px) saturate(160%);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{max-width:1320px;margin:0 auto;height:70px;display:flex;align-items:center;justify-content:space-between;gap:2rem}
.site-logo{display:flex;align-items:center;gap:.6rem;transition:opacity var(--t-fast)}
.site-logo:hover{opacity:.7}
.logo-mark{color:var(--ink);transition:transform var(--t-med)}
.site-logo:hover .logo-mark{transform:rotate(15deg)}
.logo-wordmark{font-family:var(--font-body);font-size:1rem;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.logo-src{font-weight:400;color:var(--ink-mid)}
.logo-n{font-weight:700}
.site-nav{display:flex;align-items:center;gap:.2rem}
.nav-link{font-size:.88rem;color:var(--ink-mid);padding:.5rem .9rem;border-radius:8px;transition:all var(--t-fast)}
.nav-link:hover{color:var(--ink);background:rgba(255,255,255,.06)}
.nav-cta{margin-left:.6rem;background:rgba(255,255,255,.1);color:var(--ink)!important;padding:.5rem 1.2rem;border-radius:var(--r-full);border:1px solid var(--border-hi);font-weight:500;transition:all var(--t-fast)}
.nav-cta:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.35)}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:36px;height:36px;padding:6px;border-radius:6px;transition:background var(--t-fast)}
.nav-toggle:hover{background:rgba(255,255,255,.08)}
.toggle-bar{display:block;width:100%;height:1.5px;background:var(--ink);border-radius:2px;transition:transform .3s,opacity .3s;transform-origin:center}
.nav-open .toggle-bar:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.nav-open .toggle-bar:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}
@media(max-width:768px){
  #site-header{padding:0 1.25rem}
  .nav-toggle{display:flex}
  .site-nav{position:fixed;top:70px;left:0;right:0;flex-direction:column;align-items:stretch;padding:1rem 1.25rem 2rem;background:rgba(8,8,15,.96);backdrop-filter:blur(24px);border-top:1px solid var(--border);opacity:0;pointer-events:none;transform:translateY(-8px);transition:opacity var(--t-med),transform var(--t-med)}
  .nav-open .site-nav{opacity:1;pointer-events:auto;transform:none}
  .nav-link{padding:.9rem .5rem;border-radius:0;border-bottom:1px solid var(--border)}
  .nav-cta{margin:1rem 0 0;justify-content:center}
}