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0;text-align:center}.notfound__inner{max-width:640px}.notfound__code{font-size:clamp(5rem,18vw,9rem);font-weight:800;line-height:1;letter-spacing:-.03em;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-deeper));-webkit-background-clip:text;background-clip:text;color:transparent}.notfound__title{font-size:1.7rem;margin:8px 0 12px}.notfound__text{color:var(--color-text-muted);font-size:1.05rem;margin-bottom:28px}.notfound__actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}@media(max-width:1024px){.category-grid{grid-template-columns:repeat(2,1fr)}.guide-grid{grid-template-columns:repeat(2,1fr)}.article__layout{grid-template-columns:minmax(0,1fr)}.article__toc{position:static;order:-1}.site-footer__grid{grid-template-columns:1fr 1fr}}@media(max-width:768px){.site-nav{position:absolute;top:var(--header-h);left:0;right:0;margin:0;padding:12px 20px 20px;background:var(--color-surface);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow);display:none}.site-nav.is-open{display:block}.site-nav__list{flex-direction:column;align-items:stretch;gap:4px}.site-nav__list a{display:block;padding:12px 14px}.nav-toggle{display:flex}.hero{padding:44px 0}.hero__inner{grid-template-columns:1fr;gap:32px}.hero__visual{order:-1}.hero__card{max-width:320px}}@media(max-width:560px){.category-grid{grid-template-columns:1fr}.guide-grid{grid-template-columns:1fr}.site-footer__grid{grid-template-columns:1fr}.section__head{flex-direction:column;gap:8px}.site-header__inner{gap:12px}.brand__tag{display:none}.lang__toggle span{display:none}}