:root{--bg: #fafafa;--sidebar-bg: #ffffff;--content-bg: #ffffff;--border: #e9ecef;--text: #212529;--text-muted: #6c757d;--accent: #2a9d8f;--accent-hover: #238f7d;--green: #20c997;--orange: #fd7e14;--purple: #6f42c1;--code-bg: #f8f9fa;--code-border: #dee2e6;--shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1)}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);font:16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;margin:0;padding:0;min-height:100vh}.container{display:flex;min-height:100vh}.sidebar{background:var(--sidebar-bg);padding:2rem 1.5rem;width:260px;min-height:100vh;position:sticky;top:0;flex-shrink:0}.site-title{display:flex;flex-direction:column;align-items:center;margin-bottom:2rem;text-align:center}.avatar{width:64px;height:64px;border-radius:0;margin-bottom:1rem;transition:transform 0.2s ease}.avatar:hover{transform:scale(1.05)}.site-title h1{font-size:1.5rem;font-weight:600;margin:0 0 0.5rem 0;color:var(--text)}.site-title h1 a{color:inherit;text-decoration:none}.site-subtitle{color:var(--text-muted);font-size:0.9rem;margin:0}.sidebar-nav{margin-top:1rem}.sidebar-nav ul{list-style:none;padding:0;margin:0}.sidebar-nav li{margin-bottom:0.5rem}.sidebar-nav a.nav-label{font-size:0.75rem;font-weight:500;text-transform:uppercase;letter-spacing:0.1em;color:var(--text-muted);text-decoration:none;transition:color 0.2s ease}.sidebar-nav a.nav-label:hover{color:var(--text)}.content{flex:1;padding:2rem;background:var(--content-bg);max-width:calc(100% - 260px)}.posts{max-width:800px}.post-card{background:white;border:1px solid var(--border);border-radius:1rem;padding:2rem;margin-bottom:2rem;box-shadow:0 1px 3px rgba(0,0,0,0.1);transition:box-shadow 0.2s ease}.post-card:hover{box-shadow:0 4px 12px rgba(0,0,0,0.15)}.post-title{font-size:1.5rem;font-weight:600;letter-spacing:-0.025em;color:var(--text);margin:0 0 0.75rem 0;line-height:1.3}.post-title a{color:inherit;text-decoration:none;transition:color 0.2s ease}.post-title a:hover{opacity:0.9}.post-date{font-size:0.875rem;color:var(--text-muted);margin:0 0 1rem 0}.post-excerpt{margin-bottom:1rem;line-height:1.6}article{background:var(--content-bg);border:1px solid var(--border);border-radius:0.75rem;padding:2.5rem;margin-bottom:2rem;box-shadow:var(--shadow)}.post-meta{display:flex;align-items:center;color:var(--text-muted);font-size:0.875rem;margin-bottom:1.5rem;gap:0.75rem}.post-meta time{font-family:'SFMono-Regular', Consolas, monospace;background:var(--code-bg);padding:0.25rem 0.5rem;border-radius:0.25rem;border:1px solid var(--code-border)}h1,h2,h3,h4,h5,h6{color:var(--text);line-height:1.3;margin:2rem 0 1rem;font-weight:600}.article-header{margin-bottom:2rem}.article-title{font-size:clamp(1.875rem, 5vw, 2.5rem);font-weight:600;letter-spacing:-0.025em;color:var(--text);margin:0 0 0.75rem 0;line-height:1.2}.article-date{font-size:0.875rem;color:var(--text-muted);margin:0}.article-content{margin-bottom:2.5rem}h2{font-size:1.5rem;color:var(--accent);border-bottom:2px solid var(--border);padding-bottom:0.5rem}h3{font-size:1.25rem;color:var(--green)}p{margin:1.25rem 0;line-height:1.7}a{color:var(--accent);text-decoration:none;transition:color 0.2s ease}a:hover{color:var(--accent-hover);text-decoration:underline}code{background:var(--code-bg);color:var(--purple);font-family:'SFMono-Regular', Consolas, "Liberation Mono", Menlo, monospace;font-size:0.875em;padding:0.25rem 0.375rem;border-radius:0.25rem;border:1px solid var(--code-border)}pre{background:var(--code-bg);border:1px solid var(--code-border);border-radius:0.5rem;padding:1.5rem;overflow-x:auto;margin:1.5rem 0;line-height:1.5}pre code{background:none;border:none;padding:0;color:var(--text);font-size:0.875rem}blockquote{border-left:4px solid var(--accent);margin:1.5rem 0;padding:1rem 1.5rem;background:var(--code-bg);border-radius:0.5rem;font-style:italic;color:var(--text-muted)}ul,ol{margin:1.25rem 0;padding-left:2rem}li{margin:0.5rem 0}hr{border:none;height:1px;background:var(--border);margin:2.5rem 0}img{max-width:100%;height:auto;border-radius:0.5rem;margin:1.5rem 0;box-shadow:var(--shadow)}.mermaid{background:var(--code-bg);border:1px solid var(--code-border);border-radius:0.5rem;padding:1.5rem;margin:1.5rem 0;text-align:center}.page-header{display:flex;justify-content:flex-end;padding:1rem 0 2rem}.browse-tags{font-size:0.875rem;color:var(--text-muted);text-decoration:none;transition:color 0.2s ease}.browse-tags:hover{color:var(--text)}.post-tags{display:flex;gap:0.375rem;flex-wrap:wrap}.tag-pill{background:var(--code-bg);border:1px solid var(--code-border);border-radius:0.25rem;padding:0.125rem 0.375rem;font-size:0.75rem;color:var(--text-muted);text-transform:lowercase;letter-spacing:0.025em}.topics-section{margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--border)}.topics-label{font-size:0.875rem;font-weight:500;color:var(--text-muted);margin:0 0 0.75rem 0}.topics-list{display:flex;flex-wrap:wrap;gap:0.5rem}.topic-chip{display:inline-flex;align-items:center;gap:0.25rem;border-radius:9999px;border:1px solid var(--border);background:rgba(0,0,0,0.04);color:var(--text);padding:0.25rem 0.625rem;font-size:0.75rem;text-decoration:none;transition:all 0.2s ease}.topic-chip:hover{background:rgba(0,0,0,0.08)}.topic-chip:focus{outline:2px solid var(--accent);outline-offset:2px}.tag-header{margin-bottom:2rem;text-align:center}.tag-header h1{font-size:2rem;margin-bottom:0.5rem}.tag-header p,.tag-count{color:var(--text-muted);margin:0}.tag-cloud{display:flex;flex-wrap:wrap;gap:0.75rem;margin:2rem 0}.tag-cloud-item{display:inline-flex;align-items:center;gap:0.25rem;padding:0.5rem 0.75rem;background:var(--surface);border:1px solid var(--border);border-radius:0.5rem;color:var(--text);text-decoration:none;font-weight:500;transition:all 0.2s ease}.tag-cloud-item:hover{background:var(--code-bg);border-color:var(--accent);color:var(--accent);text-decoration:none}.tag-cloud-count{color:var(--text-muted);font-weight:400}#toc.toc{background:none;border:none;border-radius:0;padding:0;margin:2rem 0;font-size:0.875rem}#toc.toc::before{content:"Contents";display:block;font-weight:600;color:var(--text);margin-bottom:1rem;font-size:0.875rem;text-transform:uppercase;letter-spacing:0.1em;color:var(--text-muted)}#toc.toc ul{list-style:none;padding-left:0;margin:0}#toc.toc li{margin:0.25rem 0;padding-left:0}#toc.toc .toc-entry{border-left:2px solid transparent;padding-left:0.75rem;transition:border-color 0.2s ease}#toc.toc .toc-h2{font-weight:500;margin:0.5rem 0 0.25rem 0}#toc.toc .toc-h3{margin-left:1rem;font-size:0.8rem}#toc.toc .toc-entry:hover{border-left-color:var(--accent)}#toc.toc a{color:var(--text-muted);text-decoration:none;transition:color 0.2s ease;line-height:1.4;display:block;padding:0.125rem 0}#toc.toc a:hover{color:var(--accent)}.calculator-form{max-width:600px}.form-section{margin-bottom:2rem}.form-section h3{color:var(--accent);font-size:1.125rem;margin-bottom:1rem;border-bottom:1px solid var(--border);padding-bottom:0.5rem}.calculator-form input{width:100%;padding:0.75rem;margin-bottom:0.75rem;border:1px solid var(--border);border-radius:0.375rem;background:var(--content-bg);color:var(--text);font-size:0.875rem;transition:border-color 0.2s ease}.calculator-form input:focus{outline:none;border-color:var(--accent)}.calculate-btn{background:var(--accent);color:white;border:none;padding:0.875rem 2rem;border-radius:0.5rem;font-size:0.875rem;font-weight:500;cursor:pointer;transition:background-color 0.2s ease;margin:1rem 0}.calculate-btn:hover{background:var(--accent-hover)}.result{margin-top:1.5rem}@media (max-width: 768px){.container{flex-direction:column}.sidebar{position:static;width:100%;min-height:auto;padding:1.5rem 1rem}.content{max-width:100%;padding:1.5rem 1rem}.site-title{flex-direction:row;text-align:left;gap:1rem;align-items:center}.avatar{width:48px;height:48px;margin-bottom:0}.sidebar-nav ul{display:flex;gap:0.5rem;margin-top:1rem}.sidebar-nav a{font-size:0.875rem}.post-card{padding:1.25rem}.hero{padding:1.25rem}}