/* Shared editorial navigation; reading and 3D applications keep their own controls. */
.site-header{width:100%;max-width:1400px;flex-wrap:wrap;gap:18px 24px}
.site-header .site-nav{flex:1;min-width:0;display:flex;flex-wrap:wrap;justify-content:flex-end;gap:6px 26px;align-items:center}
.site-header .site-nav a{display:inline-flex;align-items:center;font-size:13px;min-height:44px;white-space:nowrap;text-decoration:none;color:inherit}
.site-header .site-nav a:last-child{padding:0;border:0;border-radius:0;background:transparent;color:inherit}
.site-header .site-nav a.nav-book{color:var(--gold,#d5b783);text-decoration:none}
.site-header .site-nav a[aria-current=page]{color:var(--gold,#d5b783);text-decoration:underline;text-underline-offset:7px}
.site-header .site-nav .nav-journey{padding:10px 16px;border:1px solid #5d8176;border-radius:4px;background:#17332f;color:var(--accent,var(--mint,#b6d9c9));gap:12px}
.site-header .site-nav .nav-journey:hover{background:#24473f}
.site-header .site-nav a:hover{text-decoration:underline;text-underline-offset:6px}
.site-header~main section[id],.site-header~main article[id],.site-header~main [id]{scroll-margin-top:130px}
@media(max-width:1050px){.site-header{align-items:center}.site-header .site-nav{gap:4px 19px}}
@media(max-width:800px){.site-header{flex-direction:column;align-items:flex-start;gap:10px;padding-block:16px}.site-header .brand{padding-top:0}.site-header .site-nav{width:100%;flex:initial;justify-content:space-between;gap:4px 15px}.site-header~main [id]{scroll-margin-top:155px}}
@media(max-width:600px){.site-header .site-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:3px 20px}.site-header .site-nav a{font-size:13px;min-height:44px;justify-content:flex-start}.site-header .site-nav .nav-journey{padding:9px 12px;justify-content:space-between}.site-header~main [id]{scroll-margin-top:180px}}
@media(prefers-reduced-motion:reduce){.site-header{backdrop-filter:none}}