.reading-progress{position:fixed;top:0;left:0;width:100%;height:3px;background:var(--color-surface);z-index:100}.reading-progress__bar{height:100%;background:linear-gradient(90deg,var(--color-ubuntu-orange),var(--color-terminal-green));transition:width 50ms ease-out}.giscus-wrapper{margin-top:4rem;border:1px solid var(--color-border);border-radius:.5rem;background:var(--color-surface);overflow:hidden}.giscus-header{height:2.5rem;background:var(--color-surface-brighter);border-bottom:1px solid var(--color-border);display:flex;align-items:center;padding:0 1rem;gap:.5rem}.giscus-header-dot{width:.75rem;height:.75rem;border-radius:50%}.giscus-header-dot.red{background:#ff5f56}.giscus-header-dot.yellow{background:#ffbd2e}.giscus-header-dot.green{background:#27c93f}.giscus-header-title{margin-left:.5rem;font-family:var(--font-mono);font-size:.8rem;color:var(--color-text-secondary);letter-spacing:.05em}.giscus-content{padding:1.5rem;min-height:200px}.giscus{width:100%}.share-buttons{display:flex;flex-direction:column;gap:.75rem;margin-bottom:2rem}.share-label{display:flex;align-items:center;gap:.5rem;font-family:var(--font-mono);font-size:.75rem;color:var(--color-text-secondary);letter-spacing:.05em}.share-list{display:flex;align-items:center;gap:.75rem}.share-button{display:flex;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;border-radius:.375rem;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-secondary);transition:all .2s;cursor:pointer}.share-button:hover{border-color:var(--color-ubuntu-orange);color:var(--color-ubuntu-orange);background:var(--color-surface-brighter);transform:translateY(-2px)}.share-button.twitter:hover{color:#1da1f2;border-color:#1da1f2}.share-button.linkedin:hover{color:#0a66c2;border-color:#0a66c2}.share-button.copy.copied{color:var(--color-terminal-green);border-color:var(--color-terminal-green)}.toc-container{position:sticky;top:6rem;width:250px;padding:1.5rem;background:var(--color-surface);border:1px solid var(--color-border);border-radius:.5rem;max-height:calc(100vh - 8rem);overflow-y:auto}.toc-header{display:flex;align-items:center;gap:.5rem;margin-bottom:1.25rem}.toc-title{font-family:var(--font-mono);font-size:.75rem;font-weight:700;color:var(--color-text-secondary);letter-spacing:.05em}.toc-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem}.toc-item{font-size:.875rem;line-height:1.4;border-left:2px solid transparent;padding-left:.75rem;transition:all .2s}.toc-item.level-3{padding-left:1.75rem;font-size:.8125rem}.toc-item a{color:var(--color-text-secondary);text-decoration:none;transition:color .2s;display:block}.toc-item:hover a{color:var(--color-text-primary)}.toc-item.active{border-left-color:var(--color-ubuntu-orange);background:var(--color-surface-brighter)}.toc-item.active a{color:var(--color-ubuntu-orange);font-weight:700}.toc-footer{margin-top:1.5rem;padding-top:1rem;border-top:1px solid var(--color-border);display:flex;align-items:center;gap:.5rem;font-size:.7rem;color:var(--color-text-secondary);font-family:var(--font-mono);text-transform:uppercase}.toc-footer-dot{width:.4rem;height:.4rem;border-radius:50%;background:var(--color-ubuntu-orange);box-shadow:0 0 4px var(--color-ubuntu-orange)}@media(max-width:1200px){.toc-container-sidebar{display:none}}