.article-with-toc{--toc-width: 256px;--content-max-width: 720px;--header-height: 64px;--toc-top-offset: calc(var(--header-height) + 32px);display:grid;grid-template-columns:1fr;gap:0;max-width:1280px;margin:0 auto;padding:0 1rem}@media(min-width:768px){.article-with-toc{padding:0 1.5rem}}@media(min-width:1024px){.article-with-toc{grid-template-columns:var(--toc-width) 1fr;gap:48px;padding:0 2rem}}.article-toc-sidebar{display:none}@media(min-width:1024px){.article-toc-sidebar{display:block;position:relative}.article-toc-sticky{position:sticky;top:var(--toc-top-offset);max-height:calc(100vh - var(--toc-top-offset) - 32px);overflow-y:auto;padding-bottom:32px}}.article-main-content{max-width:var(--content-max-width);width:100%}.toc-container{font-family:var(--font-sans, system-ui, -apple-system, sans-serif)}.toc-header{margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid hsl(var(--border))}.toc-title{font-size:.8125rem;font-weight:600;letter-spacing:.03em;text-transform:uppercase;color:hsl(var(--muted-foreground))}.toc-count{display:inline-block;margin-left:8px;font-size:.75rem;font-weight:500;color:hsl(var(--muted-foreground) / .7)}.toc-progress-track,.toc-footer{display:none}.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:0}.toc-item{margin:0;padding:0}.toc-link{display:flex;align-items:flex-start;gap:8px;width:100%;min-height:36px;padding:8px 0 8px 12px;margin-left:-12px;background:transparent;border:none;border-left:2px solid transparent;cursor:pointer;text-align:left;transition:all .15s ease}.toc-link:hover{border-left-color:hsl(var(--border))}.toc-link:hover .toc-link-text{color:hsl(var(--foreground))}.toc-link:focus-visible{outline:2px solid hsl(210 100% 45%);outline-offset:2px;border-radius:4px}.toc-link--active{border-left-color:#0073e6;background:#0073e60d}.toc-link--active .toc-link-text{color:hsl(var(--foreground));font-weight:500}.toc-link--past .toc-link-text{color:hsl(var(--muted-foreground) / .8)}.toc-marker{flex-shrink:0;width:16px;height:16px;margin-top:2px;color:hsl(var(--muted-foreground) / .5)}.toc-link--past .toc-marker{color:#21c45d}.toc-marker-dot{display:block;width:6px;height:6px;margin:5px;border-radius:50%;background:currentColor}.toc-link-text{font-size:.875rem;line-height:1.5;color:hsl(var(--muted-foreground));transition:color .15s ease}.toc-mobile{display:block;margin-bottom:24px}@media(min-width:1024px){.toc-mobile{display:none}}.toc-mobile-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:48px;padding:12px 16px;background:hsl(var(--background));border:1px solid hsl(var(--border));border-radius:8px;box-shadow:0 1px 2px hsl(var(--foreground) / .05);cursor:pointer;transition:all .15s ease}.toc-mobile-toggle:hover{background:hsl(var(--muted) / .3)}.toc-mobile-toggle:focus-visible{outline:2px solid hsl(210 100% 45%);outline-offset:2px}.toc-mobile-toggle[aria-expanded=true]{border-radius:8px 8px 0 0;border-bottom-color:transparent}.toc-mobile-toggle-text{display:flex;align-items:center;gap:8px;font-size:.9375rem;font-weight:500;color:hsl(var(--foreground))}.toc-mobile-toggle-text svg{flex-shrink:0;color:hsl(var(--muted-foreground))}.toc-mobile-toggle-icon{flex-shrink:0;width:20px;height:20px;color:hsl(var(--muted-foreground));transition:transform .2s ease}.toc-mobile-toggle[aria-expanded=true] .toc-mobile-toggle-icon{transform:rotate(180deg)}.toc-mobile-content{display:none;background:hsl(var(--background));border:1px solid hsl(var(--border));border-top:none;border-radius:0 0 8px 8px;box-shadow:0 4px 6px hsl(var(--foreground) / .05);overflow:hidden}.toc-mobile-content.is-open{display:block;animation:slideDown .2s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.toc-mobile-list{list-style:none;margin:0;padding:8px 0}.toc-mobile-link{display:flex;align-items:center;min-height:48px;padding:12px 16px;font-size:1rem;line-height:1.4;color:hsl(var(--muted-foreground));text-decoration:none;transition:all .15s ease}.toc-mobile-link:hover,.toc-mobile-link:focus{background:hsl(var(--muted) / .3);color:hsl(var(--foreground))}.toc-mobile-link:focus-visible{outline:2px solid hsl(210 100% 45%);outline-offset:-2px}.toc-mobile-floating{display:none;position:fixed;bottom:24px;left:50%;transform:translate(-50%);z-index:50;width:calc(100% - 32px);max-width:400px}.toc-mobile-floating.is-visible{display:block;animation:floatUp .3s ease-out}@keyframes floatUp{0%{opacity:0;transform:translate(-50%) translateY(16px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.toc-mobile-floating-btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:52px;padding:14px 20px;background:hsl(var(--foreground));color:hsl(var(--background));border:none;border-radius:26px;box-shadow:0 4px 12px hsl(var(--foreground) / .15),0 2px 4px hsl(var(--foreground) / .1);font-size:.9375rem;font-weight:600;cursor:pointer;transition:all .15s ease}.toc-mobile-floating-btn:hover{transform:scale(1.02);box-shadow:0 6px 16px hsl(var(--foreground) / .2),0 2px 6px hsl(var(--foreground) / .1)}.toc-mobile-floating-btn:focus-visible{outline:2px solid hsl(210 100% 45%);outline-offset:2px}@media(min-width:1024px){.toc-mobile-floating{display:none!important}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.toc-sheet{display:none;position:fixed;inset:0;z-index:100}.toc-sheet.is-open{display:block}.toc-sheet-backdrop{position:absolute;inset:0;background:hsl(var(--foreground) / .4);animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.toc-sheet-content{position:absolute;bottom:0;left:0;right:0;max-height:70vh;background:hsl(var(--background));border-radius:16px 16px 0 0;box-shadow:0 -4px 24px hsl(var(--foreground) / .1);overflow:hidden;animation:slideUp .3s ease-out}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.toc-sheet-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid hsl(var(--border))}.toc-sheet-title{font-size:1rem;font-weight:600;color:hsl(var(--foreground))}.toc-sheet-close{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:transparent;border:none;border-radius:8px;color:hsl(var(--muted-foreground));cursor:pointer;transition:all .15s ease}.toc-sheet-close:hover{background:hsl(var(--muted) / .5);color:hsl(var(--foreground))}.toc-sheet-close:focus-visible{outline:2px solid hsl(210 100% 45%);outline-offset:2px}.toc-sheet-list{list-style:none;margin:0;padding:8px 0 24px;max-height:calc(70vh - 80px);overflow-y:auto}.toc-sheet-link{display:flex;align-items:center;gap:12px;min-height:52px;padding:14px 20px;font-size:1rem;color:hsl(var(--muted-foreground));text-decoration:none;transition:all .15s ease}.toc-sheet-link:hover,.toc-sheet-link:focus{background:hsl(var(--muted) / .3);color:hsl(var(--foreground))}.toc-sheet-link:focus-visible{outline:2px solid hsl(210 100% 45%);outline-offset:-2px}.toc-sheet-link[aria-current=location]{background:#0073e614;color:hsl(var(--foreground))}.toc-sheet-number{display:flex;align-items:center;justify-content:center;width:24px;height:24px;flex-shrink:0;font-size:.75rem;font-weight:600;background:hsl(var(--muted));border-radius:50%;color:hsl(var(--muted-foreground))}.toc-sheet-link[aria-current=location] .toc-sheet-number{background:#0073e6;color:#fff}.toc-sheet-link-text{flex:1}@media(min-width:1024px){.toc-sheet{display:none!important}}