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var(--border);cursor:pointer;z-index:40;width:3rem;height:3rem;color:var(--text-primary);opacity:0;visibility:hidden;box-shadow:var(--shadow-soft);backdrop-filter:blur(8px);border-radius:50%;justify-content:center;align-items:center;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;position:fixed;bottom:2rem;right:2rem;transform:translateY(20px)scale(.8)}.back-to-top[data-astro-cid-rcz5ofpd]:hover{background-color:var(--surface-hover);border-color:var(--text-tertiary);box-shadow:var(--shadow-strong);transform:translateY(-2px)scale(.9)}.back-to-top[data-astro-cid-rcz5ofpd]:active{transform:translateY(0)scale(.85)}.back-to-top[data-astro-cid-rcz5ofpd].visible{opacity:1;visibility:visible;transform:translateY(0)scale(1)}.back-to-top[data-astro-cid-rcz5ofpd] svg[data-astro-cid-rcz5ofpd]{transition:transform .2s ease-out}.back-to-top[data-astro-cid-rcz5ofpd]:hover svg[data-astro-cid-rcz5ofpd]{transform:translateY(-1px)}@media 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.back-button,.mobile-post-controls[data-astro-cid-ssdmjifj] .theme-toggle{width:1.75rem;height:1.75rem;color:var(--text-secondary);border-radius:.25rem;justify-content:center;align-items:center;padding:0;display:inline-flex}.post-controls[data-astro-cid-ssdmjifj] .back-button:hover,.post-controls[data-astro-cid-ssdmjifj] .theme-toggle:hover,.mobile-post-controls[data-astro-cid-ssdmjifj] .back-button:hover,.mobile-post-controls[data-astro-cid-ssdmjifj] .theme-toggle:hover{background-color:var(--selection);color:var(--text-primary)}.post-controls[data-astro-cid-ssdmjifj] .back-button:focus-visible,.post-controls[data-astro-cid-ssdmjifj] .theme-toggle:focus-visible,.mobile-post-controls[data-astro-cid-ssdmjifj] .back-button:focus-visible,.mobile-post-controls[data-astro-cid-ssdmjifj] .theme-toggle:focus-visible{background-color:var(--selection)}.post-controls[data-astro-cid-ssdmjifj] .back-button svg,.post-controls[data-astro-cid-ssdmjifj] .theme-toggle 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