:root{--rule-wave:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='18' viewBox='0 0 48 18'%3E%3Cpath d='M0 9C4 -1.667 8 -1.667 12 9S20 19.667 24 9S32 -1.667 36 9S44 19.667 48 9' fill='none' stroke='black' stroke-width='1'/%3E%3C/svg%3E");--glass-wave:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='18' viewBox='0 0 48 18'%3E%3Cpath d='M0 9C4 -1.667 8 -1.667 12 9S20 19.667 24 9S32 -1.667 36 9S44 19.667 48 9V0H0Z'/%3E%3C/svg%3E")}.a:before{content:"";z-index:-1;pointer-events:none;background:color-mix(in oklab, var(--surface-1) 78%, transparent);backdrop-filter:saturate(180%)blur(14px);mask-image:linear-gradient(black, black), var(--glass-wave);animation:8s linear infinite paused glass-wave-drift;position:absolute;inset:0 0 -9px;mask-position:0 0,0 bottom;mask-size:100% calc(100% - 18px),48px 18px;mask-repeat:no-repeat,repeat-x}.a:after,.article-meta:after,.article-toc-list:after,.article-strike:after,hr:after{content:"";background:var(--ctp-surface0,var(--border-subtle));block-size:18px;mask-image:var(--rule-wave);animation:8s linear infinite paused rule-wave-drift;position:absolute;inset-block-end:-9px;inset-inline:0;mask-position:0 0;mask-size:48px 18px;mask-repeat:repeat-x}.a:after{background:var(--border-subtle)}.article-toc-list:after{inset-block-end:-25px}hr{border:0;block-size:18px;position:relative;overflow:hidden}hr:after{inset-block-end:0}@keyframes rule-wave-drift{to{mask-position:48px 0}}@keyframes glass-wave-drift{to{mask-position:0 0,48px bottom}}@media (hover:hover) and (prefers-reduced-motion:no-preference){.a:hover:before,.a:hover:after,.article-meta:hover:after,.article-toc-list:hover:after,.article-toc-list:has(+.article-meta-tools:hover):after,.article-fluid-link.is-visited:hover .article-strike:after,hr:hover:after,:hover+hr:after{animation-play-state:running}}html[data-wave-paused] :is(.a,.article-meta,.article-toc-list,.article-strike,hr):after,html[data-wave-paused] .a:before,html[data-journey-loading] :is(.a,.article-meta,.article-toc-list,.article-strike,hr):after,html[data-journey-loading] .a:before,.g :is(.a,.article-meta,.article-toc-list,.article-strike,hr):after,.g .a:before{animation-play-state:paused}@media print{.article-meta:after,.article-toc-list:after,.article-strike:after,hr:after{animation:none}}.site-nav-newsletter{block-size:2.75rem;inline-size:2.75rem;color:var(--text-1);border-radius:50%;flex-shrink:0;place-items:center;text-decoration:none;display:inline-grid}.site-nav-newsletter svg{block-size:1.25rem;inline-size:1.25rem}.site-nav-newsletter:hover{color:var(--accent);background:var(--surface-2)}.site-nav-newsletter:focus-visible{outline:2px solid var(--focus-ring);outline-offset:3px}@media (width<=42rem){.a .al{box-sizing:border-box;justify-content:center;align-items:center;block-size:2.75rem;inline-size:1.875rem;padding:0}.a .site-nav-links>.af{inline-size:1.75rem}.a .site-nav-newsletter{inline-size:2rem}}