.reading-progress{position:fixed;top:0;left:0;height:4px;background:var(--accent-gradient);width:0%;z-index:1000;transition:width .1s ease}.post-container{max-width:720px;margin:clamp(2rem,8vw,4rem) auto;padding:0 1.5rem}.post-header{display:flex;flex-direction:column;gap:1.25rem;margin-bottom:2rem}.back-link{color:var(--text-muted);text-decoration:none;font-size:.9rem;font-weight:700;transition:color .2s ease,transform .2s ease;display:inline-flex;align-items:center}.back-link:hover{color:var(--accent-color);transform:translate(-3px)}.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:1rem;font-size:.8rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}.category-badge-post{background-color:var(--accent-light);color:var(--accent-color);padding:.2rem .6rem;border-radius:6px;font-size:.72rem;transition:background-color var(--transition-speed),color var(--transition-speed)}.read-time-badge{display:inline-flex;align-items:center;gap:.25rem;color:var(--text-muted)}.post-header h1{font-size:clamp(2rem,6vw,2.75rem);line-height:1.2;font-weight:800;letter-spacing:-.03em;color:var(--text-primary);transition:color var(--transition-speed)}.post-header .description{font-size:clamp(1.1rem,2.5vw,1.25rem);line-height:1.5;color:var(--text-secondary);font-weight:400;transition:color var(--transition-speed)}.divider{border:0;border-top:1px solid var(--border-color);margin:2rem 0;transition:border-color var(--transition-speed)}.post-content{line-height:1.8;font-size:clamp(1rem,2vw,1.1rem);color:var(--text-secondary);transition:color var(--transition-speed)}.post-content p{margin-bottom:1.75rem}.post-content h2{font-size:clamp(1.4rem,4vw,1.75rem);font-weight:800;letter-spacing:-.02em;margin:2.75rem 0 1.25rem;color:var(--text-primary);transition:color var(--transition-speed)}.post-content h3{font-size:clamp(1.15rem,3vw,1.35rem);font-weight:800;margin:2rem 0 1rem;color:var(--text-primary);transition:color var(--transition-speed)}.post-content ul,.post-content ol{margin-bottom:1.75rem;padding-left:1.5rem}.post-content li{margin-bottom:.5rem}.post-content strong{color:var(--text-primary);font-weight:700;transition:color var(--transition-speed)}.post-content code{background-color:var(--bg-secondary);padding:.2rem .45rem;border-radius:6px;font-size:.9em;font-family:Menlo,Monaco,Consolas,Courier New,monospace;color:var(--accent-color);border:1px solid var(--border-color);transition:background-color var(--transition-speed),border-color var(--transition-speed),color var(--transition-speed)}.post-content pre{background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color);padding:1.5rem;border-radius:12px;overflow-x:auto;margin-bottom:1.75rem;font-size:.9rem;box-shadow:var(--card-shadow);transition:background-color var(--transition-speed),border-color var(--transition-speed),color var(--transition-speed)}.post-content pre code{background-color:transparent;padding:0;color:inherit;font-size:inherit;border:none}.post-content img{max-width:100%;height:auto;border-radius:12px;margin:1.5rem auto;display:block;box-shadow:var(--card-shadow)}.post-content blockquote{border-left:4px solid var(--accent-color);padding:.5rem 0 .5rem 1.25rem;margin:1.75rem 0;font-style:italic;color:var(--text-primary)}.post-content table{width:100%;border-collapse:collapse;margin-bottom:1.75rem;font-size:.95rem}.post-content th,.post-content td{padding:.75rem;border-bottom:1px solid var(--border-color);text-align:left}.post-content th{font-weight:700;color:var(--text-primary)}.share-section{margin-top:3rem;padding:2rem;background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:16px;text-align:center;transition:background-color var(--transition-speed),border-color var(--transition-speed)}.share-section h4{font-weight:800;font-size:1rem;margin-bottom:1.25rem;color:var(--text-primary);letter-spacing:-.01em;transition:color var(--transition-speed)}.share-buttons{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.share-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:10px;font-size:.9rem;font-weight:700;text-decoration:none;color:#fff;transition:transform .2s ease,opacity .2s ease;box-shadow:0 4px 6px #0000000d}.share-btn:hover{transform:translateY(-1px);opacity:.95}.share-wa{background-color:#25d366}.share-li{background-color:#0077b5}.back-to-top-btn{position:fixed;bottom:2rem;right:2rem;width:3rem;height:3rem;border-radius:50%;background-color:var(--card-bg);color:var(--text-primary);border:1px solid var(--border-color);cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--card-shadow-hover);opacity:0;transform:scale(.8);pointer-events:none;transition:opacity .3s ease,transform .3s ease,background-color var(--transition-speed),border-color var(--transition-speed),color var(--transition-speed);z-index:90}.back-to-top-btn.visible{opacity:1;transform:scale(1);pointer-events:auto}.back-to-top-btn:hover{color:var(--accent-color);border-color:var(--accent-color);transform:translateY(-2px)}@media (max-width: 640px){.back-to-top-btn{bottom:1.5rem;right:1.5rem;width:2.75rem;height:2.75rem}}