.back-to-top{position:fixed;right:28px;bottom:28px;width:52px;height:52px;background:#000;border-radius:6px;display:flex;align-items:center;justify-content:center;text-decoration:none;opacity:0;visibility:hidden;transform:translateY(20px);transition:opacity .4s ease,transform .4s ease,visibility .4s;z-index:999}.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}.back-to-top .arrow{width:10px;height:10px;border-top:2px solid #fff;border-right:2px solid #fff;transform:rotate(-45deg);transition:transform .3s ease}.back-to-top:hover .arrow{transform:rotate(-45deg) translateY(-4px)}.site-footer{background:var(--color-text);color:#fff;padding:80px 20px 30px}.footer-inner{max-width:900px;margin:0 auto}.footer-logo{text-align:center;margin-bottom:60px}.footer-logo img{width:250px}.footer-nav{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-bottom:50px}.footer-nav-section ul{list-style:none;padding:0}.footer-nav-sub{font-family:var(--font-en);color:var(--color-subaccent);font-size:12px;letter-spacing:2px;margin-bottom:6px}.footer-nav-title{font-family:var(--font-serif);font-size:18px;margin-bottom:14px;padding-bottom:8px;border-bottom:.5px solid rgba(255,255,255,.5)}.footer-nav-section li{margin-bottom:8px}.footer-nav-section a{color:#fff;text-decoration:none;font-size:14px;opacity:.9;transition:.3s}.footer-nav-section a:hover{opacity:.5}.footer-contact{text-align:center;margin-bottom:40px}.footer-contact-btn{display:inline-block;border:1px solid #fff;padding:12px 28px;color:#fff;text-decoration:none;font-family:var(--font-en);letter-spacing:2px;transition:.3s}.footer-contact-btn:hover{background:#fff;color:var(--color-text)}.footer-copyright{text-align:center;font-size:11px;opacity:.6;letter-spacing:1px}@media (max-width:768px){.footer-nav{grid-template-columns:1fr;gap:30px}.footer-logo img{width:200px}}