.back-to-top{position:fixed;right:max(24px,env(safe-area-inset-right));bottom:max(24px,env(safe-area-inset-bottom));z-index:30;display:flex;align-items:center;justify-content:center;gap:10px;min-width:52px;min-height:52px;padding:0 18px;background:var(--navy);color:#fff;border:1px solid var(--gold);border-radius:50px;box-shadow:0 8px 24px rgba(16,39,91,.24);text-decoration:none;font:600 .875rem var(--sans);transition:opacity .25s,transform .25s,background .25s; -webkit-tap-highlight-color:transparent}
.back-to-top svg{width:22px;height:22px;fill:none;stroke:var(--gold);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.back-to-top:hover{background:var(--blue);transform:translateY(-3px)}
.back-to-top:focus-visible{outline:3px solid var(--gold);outline-offset:4px}
.back-to-top.is-hidden{opacity:0;visibility:hidden;pointer-events:none;transform:translateY(12px)}
@media(max-width:600px){.back-to-top{right:16px;bottom:max(18px,env(safe-area-inset-bottom));width:52px;padding:0}.back-to-top span{display:none}footer{padding-bottom:90px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto!important}.back-to-top{transition:none}}