.nv-bar{display:none}@media (max-width:620px){.site-header-actions .nav-cta{display:none}}.nv-burger{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:8px 14px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);font:600 .9rem var(--font-sans);cursor:pointer}.nv-burger-icon{width:18px;height:2px;background:var(--ink);box-shadow:0 -6px 0 var(--ink),0 6px 0 var(--ink);border-radius:1px}html.sheet-open{overflow:hidden}.nv-sheet{position:fixed;inset:var(--header-h) 0 0 0;z-index:90;background:var(--canvas);border-top:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto;padding:1rem var(--gutter) 2rem}.nv-sheet-head{display:flex;align-items:center;justify-content:space-between;padding:.4rem 0 1rem}.nv-sheet-title{font:700 1.1rem var(--font-display);color:var(--ink)}.nv-sheet-close{min-height:44px;min-width:44px;padding:10px 18px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);font:600 .9rem var(--font-sans);color:var(--text);cursor:pointer}.nv-sheet-group{padding:.9rem 0;border-bottom:1px solid var(--border-quiet)}.nv-sheet-h{margin:0 0 .5rem;font:600 .78rem var(--font-sans);letter-spacing:.08em;color:var(--muted)}html[lang=fa] .nv-sheet-h{letter-spacing:0}.nv-sheet-group ul{list-style:none;margin:0;padding:0;display:grid;grid-gap:2px;gap:2px}.nv-sheet-item,.nv-sheet-link{display:flex;align-items:center;justify-content:space-between;gap:.5rem;min-height:48px;padding:10px 12px;border-radius:var(--radius-sm);font:500 1rem var(--font-sans);color:var(--text);text-decoration:none}.nv-sheet-item.is-here,.nv-sheet-link.is-here{background:var(--selected);color:var(--brand);font-weight:600}.nv-sheet-cta{margin-top:1.4rem;justify-content:center;display:flex}.nv-en{font:600 .62rem var(--font-mono);font-style:normal;color:var(--muted);border:1px solid var(--border);border-radius:4px;padding:2px 5px;letter-spacing:.04em}@media (min-width:1024px){.nv-burger,.nv-sheet{display:none}.nv-bar{display:flex;align-items:center;gap:.25rem;min-width:0}.nv-btn,.nv-link{display:inline-flex;align-items:center;gap:5px;padding:10px 13px;border:0;border-radius:var(--radius-sm);background:transparent;color:var(--text);font:500 .95rem var(--font-sans);text-decoration:none;cursor:pointer;white-space:nowrap}.nv-btn:hover,.nv-link:hover{background:var(--surface-2);color:var(--brand)}.nv-btn:focus-visible,.nv-item:focus-visible,.nv-link:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.nv-btn.is-here,.nv-link.is-here{color:var(--brand);font-weight:600}.nv-btn.is-open{background:var(--surface-2)}.nv-caret{font-size:.62rem;color:var(--muted);transform:translateY(1px)}.nv-btn[aria-expanded=true] .nv-caret{transform:translateY(-1px) rotate(180deg)}.nv-group{position:relative}.nv-menu{position:absolute;top:calc(100% + 6px);left:0;min-width:230px;display:grid;padding:6px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lift);z-index:60}.nv-item{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:11px 12px;border-radius:var(--radius-sm);color:var(--text);font:500 .92rem var(--font-sans);text-decoration:none;white-space:nowrap}.nv-item.is-here,.nv-item:hover{background:var(--selected);color:var(--brand)}.nv-item.is-here{font-weight:600}.site-header .nav{display:none}}