.nebula-root{--nbl-body:color-mix(in oklab,var(--nb-foreground) 80%,var(--nb-muted))}.nbl-shell{position:relative;padding:clamp(104px,12vw,148px) 0 0}.nbl-halo{position:absolute;top:0;left:50%;transform:translateX(-50%);width:min(900px,92%);height:340px;pointer-events:none;z-index:0;opacity:var(--nb-ambient-op);background:radial-gradient(58% 56% at 50% 22%,rgba(124,77,255,.12),transparent 72%);filter:blur(26px)}.nbl-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,68ch);justify-content:center;gap:clamp(28px,4vw,60px);width:100%;max-width:1160px;margin:0 auto;padding:0 24px 96px}@media (min-width:1040px){.nbl-grid{grid-template-columns:240px minmax(0,70ch);justify-content:center}}.nbl-main{min-width:0;max-width:70ch}.nbl-head{padding-bottom:clamp(28px,4vw,40px);border-bottom:1px solid var(--nb-border);margin-bottom:clamp(20px,3vw,32px)}.nbl-title{font-family:var(--font-display),Georgia,"Songti SC",serif;font-size:clamp(2.2rem,5vw,3.4rem);font-weight:600;letter-spacing:-.02em;line-height:1.06;margin:0;color:var(--nb-foreground);font-variation-settings:"opsz" 144}.nbl-badge{display:inline-flex;align-items:center;gap:7px;margin-top:20px;padding:6px 13px;border-radius:999px;border:1px solid var(--nb-border);background:color-mix(in oklab,var(--nb-card) 70%,transparent);backdrop-filter:blur(8px);font-family:var(--font-mono),ui-monospace,monospace;font-size:11px;font-weight:500;letter-spacing:.04em;color:var(--nb-muted)}.nbl-badge:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--nb-accent);box-shadow:0 0 10px var(--nb-accent)}.nbl-intro{margin:22px 0 0;color:var(--nbl-body);font-size:16.5px;line-height:1.75}.nbl-section{scroll-margin-top:96px;padding-top:clamp(28px,3.4vw,40px)}.nbl-section-title{font-family:var(--font-display),Georgia,"Songti SC",serif;font-size:clamp(1.25rem,2.4vw,1.6rem);font-weight:560;letter-spacing:-.012em;line-height:1.28;margin:0 0 14px;color:var(--nb-foreground)}.nbl-section-content{color:var(--nbl-body);font-size:15.5px;line-height:1.85}.nbl-paragraph{margin:0 0 14px}.nbl-paragraph:last-child{margin-bottom:0}.nbl-list{margin:0 0 14px;padding-inline-start:1.4em;list-style:none}.nbl-list:last-child{margin-bottom:0}.nbl-list li{position:relative;margin-bottom:9px}.nbl-list li:last-child{margin-bottom:0}.nbl-list li:before{content:"";position:absolute;inset-inline-start:-1.15em;top:.72em;width:5px;height:5px;border-radius:50%;background:var(--nb-accent)}.nbl-section-content strong{color:var(--nb-foreground);font-weight:600}.nbl-section-content a{color:var(--nb-accent);text-decoration:underline;text-underline-offset:2px}.nbl-toc{align-self:start;position:sticky;top:96px;max-height:calc(100vh - 120px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}.nbl-toc-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;padding:0 0 14px;background:none;border:none;cursor:default;text-align:start;font-family:var(--font-mono),ui-monospace,monospace;font-size:10.5px;font-weight:500;text-transform:uppercase;letter-spacing:.14em;color:var(--nb-muted)}.nbl-toc-chevron{display:none;flex:none;transition:transform .2s ease}.nbl-toc-items{list-style:none;margin:0;padding:0;border-inline-start:1px solid var(--nb-border)}.nbl-toc-link{display:block;padding:6px 0;padding-inline-start:16px;margin-inline-start:-1px;border-inline-start:2px solid transparent;border-radius:0 8px 8px 0;font-size:13px;line-height:1.5;color:var(--nb-muted);transition:color .16s ease,border-color .16s ease,background .16s ease,font-weight .16s ease}.nbl-toc-link:hover{color:var(--nb-foreground);background:color-mix(in oklab,var(--nb-accent) 7%,transparent)}.nbl-toc-link-active{color:var(--nb-accent);font-weight:600;border-inline-start-color:var(--nb-accent);background:color-mix(in oklab,var(--nb-accent) 11%,transparent);box-shadow:inset 2px 0 0 var(--nb-accent),-1px 0 10px -2px color-mix(in oklab,var(--nb-accent) 55%,transparent)}[dir=rtl] .nbl-toc-link{border-radius:8px 0 0 8px}[dir=rtl] .nbl-toc-link-active{box-shadow:inset -2px 0 0 var(--nb-accent),1px 0 10px -2px color-mix(in oklab,var(--nb-accent) 55%,transparent)}@media (min-width:1040px){.nbl-toc-panel{display:block!important}}@media (max-width:1039px){.nbl-toc{position:static;max-height:none;order:-1;border:1px solid var(--nb-border);border-radius:16px;background:color-mix(in oklab,var(--nb-card) 75%,transparent);backdrop-filter:blur(8px);padding:4px 18px}.nbl-toc-heading{cursor:pointer;padding:14px 0}.nbl-toc-chevron{display:block}.nbl-toc-heading[aria-expanded=true] .nbl-toc-chevron{transform:rotate(180deg)}.nbl-toc-panel{display:none;padding-bottom:12px}.nbl-toc-panel-open{display:block}.nbl-toc-items,.nbl-toc-link{border-inline-start:none}.nbl-toc-link{padding-inline-start:0}.nbl-toc-link-active{border-inline-start:none;font-weight:600}}.nbl-top{position:fixed;right:24px;bottom:24px;z-index:40;display:grid;place-items:center;width:44px;height:44px;border-radius:50%;border:1px solid var(--nb-border);background:color-mix(in oklab,var(--nb-card) 82%,transparent);backdrop-filter:blur(10px);color:var(--nb-foreground);box-shadow:0 8px 28px -12px rgba(0,0,0,.5);opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .22s ease,transform .22s ease,border-color .16s ease}.nbl-top-visible{opacity:1;transform:translateY(0);pointer-events:auto}.nbl-top:hover{border-color:color-mix(in oklab,var(--nb-accent) 60%,var(--nb-border))}