.site-header{background:color-mix(in srgb,var(--bg) 82%,transparent);border-block-end:1px solid var(--border)}.nav-inner{min-block-size:var(--header-h)}.brand{display:inline-flex;align-items:center;gap:0.55rem;min-block-size:2.75rem;color:var(--text);text-decoration:none}.brand>span{font-family:var(--font-sans);font-size:var(--text-xl);font-weight:760;letter-spacing:0.005em}.brand-mark{inline-size:2.4rem;block-size:1.2rem;fill:none;stroke-linecap:round;overflow:visible}.brand-mark .bm-fly{stroke:var(--text);stroke-width:2;stroke-dasharray:2.5 3}.brand-mark .bm-land{stroke:var(--land);stroke-width:4.5}.brand:hover .bm-land{stroke:var(--land-ink)}:dir(rtl) .brand-mark{transform:scaleX(-1)}.nav-main{display:flex;gap:var(--space-1);align-items:center;margin-inline-start:auto}.nav-link{display:inline-flex;align-items:center;min-block-size:2.5rem;padding-inline:0.8rem;border-radius:var(--radius-full);color:var(--text-muted);font-weight:550;text-decoration:none}.nav-link:hover{color:var(--text);background:var(--bg-sunken)}.nav-link.active{color:var(--text);position:relative}.nav-main .nav-link.active::after{content:"";position:absolute;inset-inline:0.8rem;inset-block-end:0.2rem;block-size:3px;border-radius:var(--radius-full);background:var(--land)}.nav-menu{display:none;position:relative}.nav-menu>summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:0.5rem;min-block-size:2.75rem;padding-inline:0.95rem;border:1px solid var(--border-strong);border-radius:var(--radius-full);font-weight:600;font-size:var(--text-sm);background:var(--bg-elevated)}.nav-menu>summary::-webkit-details-marker{display:none}.nav-menu>summary::before{content:"";inline-size:1rem;block-size:0.75rem;background:linear-gradient(currentColor 0 0) top / 100% 2px no-repeat,linear-gradient(currentColor 0 0) center / 100% 2px no-repeat,linear-gradient(currentColor 0 0) bottom / 100% 2px no-repeat}.nav-menu[open]>summary{border-color:var(--text)}.nav-menu-panel{position:absolute;inset-inline-end:0;inset-block-start:calc(100% + 0.5rem);z-index:40;min-inline-size:14rem;display:grid;padding:0.4rem;background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}.nav-menu-panel .nav-link{display:flex;min-block-size:2.75rem;border-radius:var(--radius);color:var(--text)}.nav-menu-panel .nav-link.active{background:var(--land-soft)}@media (max-width:560px){.nav-main{display:none}.nav-menu{display:block}}@media (max-height:520px){.site-header{position:static}}