:root{--rail:17rem;--rail-narrow:4.25rem;--topbar:3.25rem;--thread:46rem}@keyframes msg-in{0%{opacity:0;transform:translate3d(0,8px,0)}to{opacity:1;transform:none}}.msg-in{animation:msg-in .38s cubic-bezier(.22,1,.36,1) both}@keyframes caret{0%,45%{opacity:1}55%,to{opacity:0}}.caret:after{content:"";display:inline-block;width:.5ch;height:1.05em;margin-left:.12em;vertical-align:-.18em;border-radius:1px;background:var(--accent);animation:caret 1.1s steps(1) infinite}@keyframes shimmer{0%{transform:translate3d(-100%,0,0)}to{transform:translate3d(220%,0,0)}}.skeleton{position:relative;overflow:hidden;border-radius:6px;background:var(--surface-2)}.skeleton:after{content:"";position:absolute;inset:0;width:45%;background:linear-gradient(90deg,transparent,color-mix(in srgb,var(--fg) 6%,transparent),transparent);animation:shimmer 1.5s ease-in-out infinite}@keyframes pulse-dot{0%,to{opacity:.35;transform:scale(.8)}50%{opacity:1;transform:scale(1)}}.pulse-dot{animation:pulse-dot 1.4s ease-in-out infinite}@media (prefers-reduced-motion:reduce){.caret:after,.msg-in,.pulse-dot,.skeleton:after{animation:none}}.thin-scroll{scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent}.thin-scroll::-webkit-scrollbar{width:10px;height:10px}.thin-scroll::-webkit-scrollbar-track{background:transparent}.thin-scroll::-webkit-scrollbar-thumb{background:var(--line-strong);border:3px solid transparent;background-clip:content-box;border-radius:999px}.thin-scroll::-webkit-scrollbar-thumb:hover{background-color:var(--faint)}.prose{font-size:1rem;line-height:1.72;color:var(--fg-soft)}.prose>*+*{margin-top:1.1em}.prose h1,.prose h2,.prose h3{color:var(--fg);letter-spacing:-.02em}.prose h1{font-size:1.4rem;line-height:1.3;margin-top:1.9em}.prose h2{font-size:1.2rem;line-height:1.35;margin-top:1.8em}.prose h3{font-size:1.0625rem;line-height:1.4;margin-top:1.6em}.prose>:first-child{margin-top:0}.prose strong{color:var(--fg);font-weight:600}.prose em{font-style:italic}.prose ol,.prose ul{padding-left:1.35em}.prose li+li{margin-top:.4em}.prose ul>li{list-style:disc}.prose ol>li{list-style:decimal}.prose li::marker{color:var(--faint)}.prose a{color:var(--fg);text-decoration:underline;text-decoration-color:var(--line-strong);text-underline-offset:3px;transition:text-decoration-color var(--dur-2) var(--ease-soft)}.prose a:hover{text-decoration-color:var(--accent)}.prose blockquote{border-left:2px solid var(--line-strong);padding-left:1.1em;color:var(--muted)}.prose code{font-family:var(--mono);font-size:.875em;background:var(--surface-2);border:1px solid var(--line);border-radius:5px;padding:.1em .35em}.prose pre code{background:none;border:0;border-radius:0;padding:0;font-size:inherit}.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0}