.post-main{max-width:1080px;margin:0 auto;padding:40px 24px 80px}.back-link{display:inline-flex;align-items:center;gap:6px;font-size:var(--text-sm);color:var(--fg-meta);text-decoration:none;margin-bottom:var(--space-8);transition:color var(--transition-base)}.back-link:hover{color:var(--fg-link-hover)}.post-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}.tag{font-size:var(--text-xs);font-weight:var(--weight-medium);color:var(--color-primary);background:var(--bg-tag);border-radius:var(--radius-pill);padding:3px 10px}.post-header{margin-bottom:36px}.post-title{font-size:var(--text-2xl);font-weight:var(--weight-bold);color:var(--fg-heading);line-height:var(--leading-tight);margin-bottom:14px}.post-description{font-size:var(--text-base);color:var(--fg-meta);line-height:1.7;margin-bottom:20px}.post-meta-row{display:flex;align-items:center;padding:16px 0;border-top:1px solid var(--bg-code);border-bottom:1px solid var(--bg-code)}.post-meta-date{font-size:var(--text-sm);color:var(--fg-meta)}.post-layout{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}.sidebar{position:sticky;top:80px;display:flex;flex-direction:column;gap:12px}.sidebar-card{border:1px solid #E8E8E8;border-radius:10px;padding:14px 16px;overflow:hidden}.sidebar-progress-bar{height:3px;background:var(--bg-code);margin:-14px -16px 14px;border-radius:2px 2px 0 0}.sidebar-progress-fill{height:100%;width:0%;background:var(--color-primary);transition:width 80ms linear;border-radius:2px}.sidebar-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.sidebar-label{font-size:11px;font-weight:700;color:var(--fg-meta);text-transform:uppercase;letter-spacing:.08em}.sidebar-progress-pct{font-size:11px;color:var(--color-primary);font-weight:600}.sidebar-section-label{margin-bottom:10px}.toc{display:flex;flex-direction:column;gap:1px}.toc-link{text-align:left;background:none;border:none;cursor:pointer;font-size:13px;line-height:1.5;padding:4px 0;color:var(--fg-meta);font-weight:400;transition:color var(--transition-fast);font-family:var(--font-sans);text-decoration:none;display:block}.toc-link:hover{color:var(--color-primary)}.toc-link.active{color:var(--color-primary);font-weight:600}.toc-link.h3{padding-left:14px}.share-btn{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:8px;border:1px solid #E8E8E8;background:#fafafa;cursor:pointer;color:var(--fg-primary);text-decoration:none;transition:border-color var(--transition-base),background var(--transition-base)}.share-btn:hover{border-color:var(--color-primary);background:var(--bg-tag)}.share-row{display:flex;gap:8px}.copy-btn{display:flex;align-items:center;gap:8px;font-size:var(--text-sm);color:var(--fg-primary);background:none;border:1px solid #E8E8E8;border-radius:7px;padding:7px 10px;cursor:pointer;text-align:left;transition:border-color var(--transition-base),background var(--transition-base);font-family:var(--font-sans)}.copy-btn:hover{border-color:var(--color-primary);background:var(--bg-tag)}.copy-actions{display:flex;flex-direction:column;gap:6px}.post-toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:var(--fg-heading);color:#fff;font-size:var(--text-sm);padding:8px 18px;border-radius:var(--radius-pill);z-index:2000;pointer-events:none;opacity:0;transition:opacity .2s ease;font-family:var(--font-sans)}.back-to-top-btn{position:fixed;bottom:28px;right:28px;width:42px;height:42px;border-radius:50%;background:var(--color-primary);border:none;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 4px 14px #56c7bb66;color:#fff;transition:background var(--transition-base),transform var(--transition-base);z-index:900}.back-to-top-btn:hover{background:var(--color-primary-hover);transform:scale(1.08)}.prose{font-size:var(--text-md);color:var(--fg-primary);line-height:var(--leading-loose)}.prose p{margin-bottom:22px}.prose h2{font-size:var(--text-xl);font-weight:var(--weight-bold);color:var(--fg-heading);line-height:var(--leading-tight);margin-top:var(--space-12);margin-bottom:14px}.prose h3{font-size:var(--text-lg);font-weight:var(--weight-bold);color:var(--fg-heading);line-height:var(--leading-tight);margin-top:var(--space-8);margin-bottom:10px}.prose img{display:block;width:100%;max-width:760px;max-height:460px;object-fit:cover;border-radius:12px;margin:22px auto}.prose figure{margin:32px auto;max-width:760px}.prose figure img{margin:0 auto}.prose figcaption{text-align:center;font-size:var(--text-sm);color:var(--fg-meta);margin-top:8px;line-height:1.5}.prose blockquote{border-left:3px solid var(--color-primary);padding-left:16px;margin:28px 0;color:var(--fg-meta);font-style:italic;font-size:var(--text-base);line-height:1.75}.prose code{font-family:var(--font-mono);font-size:var(--text-sm);background:var(--bg-code);border-radius:var(--radius-sm);padding:2px 5px}.prose pre{background:var(--bg-code);border:1px solid var(--border-default);border-radius:var(--radius-md);padding:14px 16px;overflow-x:auto;margin:22px 0}.prose pre code{background:none;padding:0;font-size:var(--text-sm);color:var(--fg-heading);line-height:1.65}.prose ul,.prose ol{padding-left:24px;margin-bottom:22px}.prose li{margin-bottom:8px}.prose hr{border:none;border-top:1px solid var(--border-default);margin:48px 0}.prose a{color:var(--fg-link);text-decoration:none}.prose a:hover{color:var(--fg-link-hover);text-decoration:underline}.prose strong{color:var(--fg-heading);font-weight:var(--weight-bold)}.post-related{margin-top:44px;padding-top:20px;border-top:1px solid var(--bg-code)}.post-related-title{font-size:18px;font-weight:700;color:var(--fg-heading);margin-bottom:12px}.post-related-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr;gap:8px}.post-related-card{display:grid;grid-template-columns:84px 1fr;gap:10px;border:1px solid #E8E8E8;border-radius:8px;padding:10px;text-decoration:none;background:var(--bg-page);transition:border-color var(--transition-base),background var(--transition-base)}.post-related-cover{width:100%;height:58px;object-fit:cover;border-radius:6px;margin-bottom:0}.post-related-content{display:flex;flex-direction:column;justify-content:center;min-width:0}.post-related-card:hover{border-color:var(--color-primary);background:#f8fcfb}.post-related-card-title{font-size:14px;font-weight:700;color:var(--fg-heading);line-height:1.4;margin-bottom:4px}.post-related-card-description{font-size:12.5px;color:var(--fg-meta);line-height:1.5;margin:0 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.post-related-card-date{font-size:11px;color:#b0b0b0}.post-pagination{margin-top:16px;display:grid;grid-template-columns:1fr 1fr;gap:8px}.post-pagination-item{min-height:74px}.post-pagination-item-next{text-align:left}.post-pagination-link{display:flex;align-items:center;gap:8px;border:1px solid #E8E8E8;border-radius:8px;padding:9px 10px;text-decoration:none;min-height:100%;transition:border-color var(--transition-base),background var(--transition-base)}.post-pagination-cover{width:80px;height:52px;flex-shrink:0;object-fit:cover;border-radius:6px;margin-bottom:0}.post-pagination-link:hover{border-color:var(--color-primary);background:#f8fcfb}.post-pagination-label{font-size:11px;font-weight:700;color:var(--color-primary);text-transform:uppercase;letter-spacing:.08em}.post-pagination-title{font-size:14px;font-weight:600;color:var(--fg-heading);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}@media(max-width:768px){.post-layout{grid-template-columns:1fr}.sidebar{position:static}.post-pagination{grid-template-columns:1fr}.post-pagination-item-next{text-align:left}.post-related-card{grid-template-columns:72px 1fr}.post-related-cover{height:52px}}