:root{--section-nav-offset: 70px;--section-nav-height: calc(2 * 0.75rem + 0.9rem * 1.7 + 3px)}.section-nav{position:fixed;top:0;left:0;right:0;z-index:2000;margin:0;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 1.2rem;background:var(--brand-bg);border-bottom:1px solid var(--border-light)}.section-nav ul{display:flex;gap:0;justify-content:center;margin:0;padding:0;list-style:none}@media(max-width:768px){.section-nav ul{overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}.section-nav ul::-webkit-scrollbar{display:none}.section-nav ul:has(li:hover),.section-nav ul:has(li:focus-within){overflow:visible}}.section-nav li{flex-shrink:0;position:relative}.section-nav a{display:block;padding:0.75rem 1.2rem;font-size:0.9rem;font-weight:500;white-space:nowrap;border-bottom:2px solid transparent;color:var(--text-secondary);text-decoration:none;transition:color 0.2s ease}.section-nav a:hover,.section-nav a:focus-visible{color:var(--text-primary)}.section-nav a.active{color:var(--text-primary);border-bottom-color:var(--text-primary)}.section-nav a:focus-visible{outline:2px solid var(--text-primary);outline-offset:2px;border-radius:2px}.section-nav li .section-nav__submenu{display:none;position:absolute;top:calc(100% - 2px);left:0;min-width:100%;z-index:3000;background:var(--brand-bg);border:1px solid var(--border-light);border-top:2px solid var(--brand-bg);border-radius:0 0 4px 4px;overflow:hidden;box-shadow:0 26px 48px var(--shadow-soft),0 12px 20px var(--shadow-soft),0 5px 8px var(--shadow-soft)}.section-nav li .section-nav__submenu a{padding:0.55rem 1.2rem;font-weight:400;border-bottom:none}.section-nav li .section-nav__submenu a:hover,.section-nav li .section-nav__submenu a:focus-visible{color:var(--text-primary);background:var(--surface-hover)}.section-nav li:hover>.section-nav__submenu,.section-nav li:focus-within>.section-nav__submenu{display:block}.language-switcher{position:relative;display:inline-flex;align-items:center;align-self:stretch;justify-self:end}.language-switcher__trigger{display:flex;align-items:center;justify-content:center;gap:0.4rem;padding:0.5rem;background:none;border:none;cursor:pointer;line-height:1;color:var(--text-secondary)}.language-switcher__flag{font-size:1.4rem;line-height:1}.language-switcher__label{font-size:0.85rem;font-weight:500;color:var(--text-secondary)}.language-switcher__dropdown{position:absolute;top:calc(100% - 2px);right:-0.3rem;z-index:3000;flex-direction:column;background:var(--brand-bg);border:1px solid var(--border-light);border-top:2px solid var(--brand-bg);border-radius:0 0 4px 4px;overflow:hidden;box-shadow:0 26px 48px var(--shadow-soft),0 12px 20px var(--shadow-soft),0 5px 8px var(--shadow-soft);display:none}.language-switcher:hover .language-switcher__dropdown,.language-switcher:focus-within .language-switcher__dropdown{display:flex}.language-switcher__dropdown .language-switcher__option{display:flex;align-items:center;justify-content:flex-end;gap:0.4rem;padding:0.55rem 0.8rem;white-space:nowrap;font-weight:400;color:var(--text-secondary);text-decoration:none}.language-switcher__dropdown .language-switcher__option:hover,.language-switcher__dropdown .language-switcher__option:focus-visible{background:var(--surface-hover);color:var(--text-primary)}