:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-secondary: #7c3aed;--color-accent: #06b6d4;--color-success: #10b981;--color-warning: #f59e0b;--color-danger: #ef4444;--color-text: #1f2937;--color-text-light: #5f6673;--color-bg: #ffffff;--color-bg-secondary: #f9fafb;--color-bg-tertiary: #f3f4f6;--color-border: #e5e7eb;--font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;--font-serif: 'Merriweather', Georgia, serif;--font-mono: 'JetBrains Mono', 'Courier New', monospace;--space-xs: 0.25rem;--space-sm: 0.5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--container-max: 1200px;--content-max: 800px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);--transition-fast: 150ms ease-in-out;--transition-base: 200ms ease-in-out;--transition-slow: 300ms ease-in-out}[data-theme="dark"]{--color-text: #f9fafb;--color-text-light: #d1d5db;--color-bg: #111827;--color-bg-secondary: #1f2937;--color-bg-tertiary: #374151;--color-border: #374151;--color-primary: #3b82f6;--color-primary-dark: #2563eb}*{box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}:focus-visible{outline:3px solid var(--color-primary);outline-offset:2px;border-radius:2px}:focus:not(:focus-visible){outline:none}.skip-link{position:absolute;left:-9999px;top:0;z-index:2000;padding:var(--space-sm) var(--space-lg);background-color:var(--color-primary);color:#fff;border-radius:0 0 0.375rem 0;text-decoration:none}.skip-link:focus{left:0}[tabindex="-1"]:focus{outline:none}h1,h2,h3,h4,h5,h6,p,li,dd,dt,figcaption,th,td,a{overflow-wrap:break-word}.post-content .content table,.page-content table{display:block;max-width:100%;overflow-x:auto}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}.btn:hover,.post-card:hover,.social-links a:hover,.share-btn:hover{transform:none}}body{margin:0;padding:0;font-family:var(--font-sans);font-size:1rem;line-height:1.6;color:var(--color-text);background-color:var(--color-bg);transition:background-color var(--transition-base),color var(--transition-base)}h1,h2,h3,h4,h5,h6{font-family:var(--font-serif);line-height:1.3;margin-top:0;margin-bottom:var(--space-md);font-weight:700}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.75rem}h4{font-size:1.5rem}h5{font-size:1.25rem}h6{font-size:1.125rem}p{margin-top:0;margin-bottom:var(--space-md)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-dark);text-decoration:underline}.featured-book{padding:var(--space-3xl) 0 var(--space-2xl)}.featured-book-content{display:grid;grid-template-columns:minmax(0, 260px) minmax(0, 1fr);gap:var(--space-2xl);align-items:center}.featured-book-image img{max-width:220px;width:100%;height:auto;border-radius:0.75rem;box-shadow:var(--shadow-lg)}.featured-book-text h2{margin-bottom:var(--space-xs)}.featured-book-text p{color:var(--color-text-light)}.featured-book-sub{font-size:0.95rem;letter-spacing:0.01em;margin-bottom:var(--space-md)}.featured-book-status{font-size:0.875rem;font-weight:500;display:inline-block;background-color:var(--color-bg-secondary);border:1px solid var(--color-border);padding:var(--space-xs) var(--space-md);border-radius:999px}.featured-book-actions{display:flex;flex-wrap:wrap;gap:var(--space-md);margin-top:var(--space-lg)}.container{max-width:var(--container-max);margin:0 auto;padding:0 var(--space-lg)}.site-header{background-color:var(--color-bg);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:1000;backdrop-filter:blur(10px);background-color:rgba(255,255,255,0.9)}[data-theme="dark"] .site-header{background-color:rgba(17,24,39,0.9)}.navbar{padding:var(--space-md) 0}.nav-container{max-width:var(--container-max);margin:0 auto;padding:0 var(--space-lg);display:flex;justify-content:space-between;align-items:center;gap:var(--space-md)}.nav-brand{min-width:0}.nav-brand .site-title{display:flex;align-items:center;gap:var(--space-md);text-decoration:none;min-width:0}.nav-brand .site-avatar-wrapper{width:40px;height:40px;border-radius:999px;overflow:hidden;flex-shrink:0;box-shadow:var(--shadow-sm)}.nav-brand .site-avatar{width:100%;height:100%;object-fit:cover;display:block}.nav-brand .title-text{display:flex;flex-direction:column}.nav-brand .title-main{font-family:var(--font-serif);font-size:1.5rem;font-weight:700;color:var(--color-text)}.nav-brand .title-tagline{font-size:0.875rem;color:var(--color-text-light);font-weight:400}.nav-actions{display:flex;align-items:center;gap:var(--space-xs);flex-shrink:0}.nav-toggle{display:none;flex-direction:column;background:none;border:none;cursor:pointer;padding:var(--space-sm)}.nav-toggle span{width:25px;height:3px;background-color:var(--color-text);margin:3px 0;transition:var(--transition-fast)}.nav-menu .nav-list{display:flex;list-style:none;margin:0;padding:0;align-items:center;gap:var(--space-lg)}.nav-menu .nav-link{display:flex;align-items:center;gap:var(--space-xs);padding:var(--space-sm) var(--space-md);color:var(--color-text);text-decoration:none;border-radius:0.375rem;transition:background-color var(--transition-fast),color var(--transition-fast)}.nav-menu .nav-link:hover{background-color:var(--color-bg-secondary);text-decoration:none}.nav-menu .nav-link.active{background-color:var(--color-primary);color:white}.nav-menu .nav-link.active:hover{background-color:var(--color-primary-dark)}.theme-toggle{background:none;border:none;cursor:pointer;padding:var(--space-sm);color:var(--color-text);font-size:1.25rem;display:flex;align-items:center;justify-content:center;border-radius:0.375rem;transition:background-color var(--transition-fast)}.theme-toggle:hover{background-color:var(--color-bg-secondary)}.main-content{min-height:calc(100vh - 200px);padding:var(--space-2xl) 0}.home-hero{background:linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);color:white;padding:var(--space-3xl) 0;text-align:center;margin-bottom:var(--space-3xl)}.home-hero .hero-content{max-width:var(--content-max);margin:0 auto;padding:0 var(--space-lg)}.home-hero .hero-title{font-size:3rem;margin-bottom:var(--space-md);color:white}.home-hero .hero-tagline{font-size:1.5rem;font-weight:300;margin-bottom:var(--space-md);opacity:0.9}.home-hero .hero-description{font-size:1.125rem;margin-bottom:var(--space-xl);opacity:0.8}.home-hero .hero-actions{display:flex;gap:var(--space-md);justify-content:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);border-radius:0.5rem;font-weight:500;text-decoration:none;transition:all var(--transition-fast);cursor:pointer;border:none}.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);text-decoration:none}.btn.btn-primary{background-color:white;color:var(--color-primary)}.btn.btn-primary:hover{background-color:var(--color-bg-secondary)}.btn.btn-secondary{background-color:rgba(255,255,255,0.2);color:white;backdrop-filter:blur(10px)}.btn.btn-secondary:hover{background-color:rgba(255,255,255,0.3)}.btn.btn-outline{background-color:transparent;border:2px solid var(--color-primary);color:var(--color-primary)}.btn.btn-outline:hover{background-color:var(--color-primary);color:white}.posts-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(350px, 1fr));gap:var(--space-xl);margin-bottom:var(--space-2xl)}.post-card{background-color:var(--color-bg);border:1px solid var(--color-border);border-radius:0.75rem;overflow:hidden;transition:all var(--transition-base);display:flex;flex-direction:column}.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl)}.post-card .post-card-header{padding:var(--space-lg) var(--space-lg) 0}.post-card .post-meta{display:flex;gap:var(--space-md);font-size:0.875rem;color:var(--color-text-light)}.post-card .post-card-body{padding:var(--space-lg);flex:1}.post-card .post-title{font-size:1.5rem;margin-bottom:var(--space-sm)}.post-card .post-title a{color:var(--color-text)}.post-card .post-title a:hover{color:var(--color-primary)}.post-card .post-excerpt{color:var(--color-text-light);margin-bottom:var(--space-md)}.post-card .post-tags{display:flex;flex-wrap:wrap;gap:var(--space-sm);margin-bottom:var(--space-md)}.post-card .post-card-footer{padding:0 var(--space-lg) var(--space-lg)}.post-card .post-card-footer .read-more{display:inline-flex;align-items:center;gap:var(--space-xs);color:var(--color-primary);font-weight:500}.post-card .post-card-footer .read-more:hover{gap:var(--space-sm)}.tag{display:inline-flex;align-items:center;gap:var(--space-xs);padding:var(--space-xs) var(--space-sm);background-color:var(--color-bg-secondary);color:var(--color-text);border-radius:0.375rem;font-size:0.875rem;text-decoration:none;transition:all var(--transition-fast)}.tag:hover{background-color:var(--color-primary);color:white;text-decoration:none}.features{background-color:var(--color-bg-secondary);padding:var(--space-3xl) 0;margin-top:var(--space-3xl)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit, minmax(250px, 1fr));gap:var(--space-xl);margin-top:var(--space-2xl)}.feature{text-align:center}.feature .feature-icon{font-size:3rem;color:var(--color-primary);margin-bottom:var(--space-md)}.feature h3{font-size:1.25rem;margin-bottom:var(--space-sm)}.feature p{color:var(--color-text-light)}.section-title{font-size:2.5rem;text-align:center;margin-bottom:var(--space-2xl)}.site-footer{background-color:var(--color-bg-tertiary);padding:var(--space-3xl) 0 var(--space-lg);margin-top:var(--space-3xl)}.footer-container{max-width:var(--container-max);margin:0 auto;padding:0 var(--space-lg)}.footer-content{display:grid;grid-template-columns:repeat(auto-fit, minmax(250px, 1fr));gap:var(--space-2xl);margin-bottom:var(--space-2xl)}.footer-section h3{font-size:1.25rem;margin-bottom:var(--space-md)}.footer-section p{color:var(--color-text-light)}.social-links{display:flex;gap:var(--space-md);margin-top:var(--space-md)}.social-links a{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background-color:var(--color-bg);border-radius:50%;color:var(--color-text);transition:all var(--transition-fast)}.social-links a:hover{background-color:var(--color-primary);color:white;transform:translateY(-2px)}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin-bottom:var(--space-sm)}.footer-links li a{color:var(--color-text-light)}.footer-links li a:hover{color:var(--color-primary)}.subscribe-button{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);background-color:var(--color-primary);color:white;border-radius:0.5rem;margin-top:var(--space-md);transition:all var(--transition-fast)}.subscribe-button:hover{background-color:var(--color-primary-dark);text-decoration:none}.footer-bottom{border-top:1px solid var(--color-border);padding-top:var(--space-lg);text-align:center;color:var(--color-text-light)}.footer-bottom p{margin:var(--space-xs) 0}.footer-bottom a{color:var(--color-text-light)}.footer-bottom a:hover{color:var(--color-primary)}.post .post-header{background-color:var(--color-bg-secondary);padding:var(--space-3xl) 0;margin-bottom:var(--space-2xl)}.post .post-header .post-title{font-size:2.5rem;margin-bottom:var(--space-lg)}.post .post-header .post-meta{display:flex;flex-wrap:wrap;gap:var(--space-lg);color:var(--color-text-light);font-size:0.875rem;margin-bottom:var(--space-md)}.post .post-header .post-meta span{display:flex;align-items:center;gap:var(--space-xs)}.post .post-content{display:grid;grid-template-columns:minmax(0, 1fr);gap:var(--space-2xl);max-width:var(--content-max);margin:0 auto}.post .post-content.has-toc{grid-template-columns:200px minmax(0, 1fr);max-width:1000px}.post .post-content .content{min-width:0}.post .post-content .toc{position:sticky;top:100px;align-self:start}.post .post-content .toc h2{font-size:1rem;margin-bottom:var(--space-md)}.post .post-content .toc nav ul{list-style:none;padding-left:0;margin:0}.post .post-content .toc nav ul li{margin-bottom:var(--space-xs)}.post .post-content .toc nav ul li a{color:var(--color-text-light);font-size:0.875rem}.post .post-content .toc nav ul li a:hover{color:var(--color-primary)}.post .post-content .toc nav ul li a.active{color:var(--color-primary);font-weight:500}.post .post-content .toc nav ul li ul{padding-left:var(--space-md);margin-top:var(--space-xs)}.post .post-content .content{font-size:1.125rem;line-height:1.8}.post .post-content .content h2,.post .post-content .content h3,.post .post-content .content h4,.post .post-content .content h5,.post .post-content .content h6{margin-top:var(--space-2xl);margin-bottom:var(--space-md)}.post .post-content .content pre{background-color:#1e293b;color:#e2e8f0;padding:var(--space-lg);border-radius:0.5rem;overflow-x:auto;margin:var(--space-lg) 0}.post .post-content .content pre code{background:none;padding:0;font-size:0.875rem}.post .post-content .content code{background-color:var(--color-bg-tertiary);padding:0.2em 0.4em;border-radius:0.25rem;font-family:var(--font-mono);font-size:0.875em}.post .post-content .content blockquote{border-left:4px solid var(--color-primary);padding-left:var(--space-lg);margin:var(--space-lg) 0;color:var(--color-text-light);font-style:italic}.post .post-content .content table{width:100%;border-collapse:collapse;margin:var(--space-lg) 0}.post .post-content .content table th,.post .post-content .content table td{padding:var(--space-sm) var(--space-md);border:1px solid var(--color-border);text-align:left}.post .post-content .content table th{background-color:var(--color-bg-secondary);font-weight:600}.post .post-content .content table tr:nth-child(even){background-color:var(--color-bg-secondary)}.post .post-content .content img{max-width:100%;height:auto;border-radius:0.5rem;margin:var(--space-lg) 0}.post .post-content .content ul,.post .post-content .content ol{margin:var(--space-md) 0;padding-left:var(--space-xl)}.post .post-content .content ul li,.post .post-content .content ol li{margin-bottom:var(--space-sm)}.post .post-footer{margin-top:var(--space-3xl);padding-top:var(--space-2xl);border-top:1px solid var(--color-border)}.post-kind{display:inline-flex;align-items:center;gap:var(--space-xs);font-size:0.8125rem;font-weight:600;letter-spacing:0.04em;text-transform:uppercase;color:var(--color-primary);background-color:var(--color-bg);border:1px solid var(--color-border);padding:var(--space-xs) var(--space-md);border-radius:999px;margin-bottom:var(--space-md)}.post-description{font-size:1.25rem;line-height:1.55;color:var(--color-text-light);max-width:60ch;margin-bottom:var(--space-lg)}.series-nav{background-color:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:0.75rem;padding:var(--space-lg) var(--space-xl);margin-bottom:var(--space-2xl)}.series-nav .series-eyebrow{font-family:var(--font-mono);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;color:var(--color-primary);margin-bottom:var(--space-xs)}.series-nav .series-title{font-size:1.25rem;margin:0 0 var(--space-xs)}.series-nav .series-description{font-size:0.9375rem;color:var(--color-text-light);margin-bottom:var(--space-md)}.series-nav .series-list{list-style:none;margin:0;padding:0;display:grid;gap:var(--space-xs)}.series-nav .series-item{display:grid;grid-template-columns:1.75rem minmax(0, 1fr);align-items:baseline;gap:var(--space-sm);font-size:0.9375rem}.series-nav .series-item.is-current{font-weight:600}.series-nav .series-num{font-family:var(--font-mono);font-size:0.8125rem;color:var(--color-text-light);font-variant-numeric:tabular-nums}.post-citation{background-color:var(--color-bg-secondary);padding:var(--space-xl);border-radius:0.75rem;margin-bottom:var(--space-2xl)}.post-citation h3{margin-bottom:var(--space-lg)}.post-citation .citation-formats{display:grid;grid-template-columns:minmax(0, 1fr);gap:var(--space-lg)}.post-citation .citation-format{min-width:0}.post-citation .citation-format h4{font-size:1rem;margin-bottom:var(--space-sm)}.post-citation .citation-format .citation-text{display:block;background-color:var(--color-bg);padding:var(--space-md);border-radius:0.375rem;font-family:var(--font-mono);font-size:0.875rem;overflow-x:auto;margin-bottom:var(--space-sm)}.post-citation .citation-format pre.citation-text{white-space:pre-wrap}.post-citation .citation-format .copy-btn{padding:var(--space-xs) var(--space-sm);background-color:var(--color-primary);color:white;border:none;border-radius:0.375rem;cursor:pointer;font-size:0.875rem;transition:background-color var(--transition-fast)}.post-citation .citation-format .copy-btn:hover{background-color:var(--color-primary-dark)}.post-citation .citation-format .copy-btn.copied{background-color:var(--color-success)}.post-share{margin-bottom:var(--space-2xl)}.post-share h3{margin-bottom:var(--space-md)}.post-share .share-buttons{display:flex;gap:var(--space-md);flex-wrap:wrap}.post-share .share-btn{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);border-radius:0.5rem;color:white;text-decoration:none;transition:all var(--transition-fast)}.post-share .share-btn:hover{transform:translateY(-2px);text-decoration:none}.post-share .share-btn.twitter{background-color:#146ba6}.post-share .share-btn.linkedin{background-color:#0077b5}.post-share .share-btn.email{background-color:var(--color-text)}.post-navigation{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-lg);margin-bottom:var(--space-2xl)}.post-navigation a{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-lg);background-color:var(--color-bg-secondary);border-radius:0.5rem;text-decoration:none;transition:all var(--transition-fast)}.post-navigation a:hover{background-color:var(--color-bg-tertiary);text-decoration:none}.post-navigation a span{display:flex;flex-direction:column}.post-navigation a span small{color:var(--color-text-light);font-size:0.875rem}.post-navigation a span strong{color:var(--color-text)}.post-navigation a.nav-prev{grid-column:1}.post-navigation a.nav-next{grid-column:2;justify-content:flex-end;text-align:right}.page .page-header{background-color:var(--color-bg-secondary);padding:var(--space-2xl) 0;margin-bottom:var(--space-2xl);text-align:center}.page .page-header .page-title{font-size:2.5rem;margin-bottom:var(--space-sm)}.page .page-header .page-description{font-size:1.25rem;color:var(--color-text-light);margin:0}.page .page-content{max-width:var(--content-max);margin:0 auto;font-size:1.125rem;line-height:1.8}@media (max-width: 768px){.featured-book-content{grid-template-columns:minmax(0, 1fr);gap:var(--space-lg);justify-items:center;text-align:center}.featured-book-text h2{font-size:1.5rem}.featured-book-actions{justify-content:center}.nav-brand .title-tagline{display:none}.nav-brand .title-main{font-size:1.15rem}.nav-toggle{display:flex;flex-shrink:0}.nav-menu{position:fixed;top:70px;left:-100%;width:100%;height:calc(100vh - 70px);background-color:var(--color-bg);transition:left var(--transition-base)}.nav-menu.active{left:0}.nav-menu .nav-list{flex-direction:column;padding:var(--space-lg);gap:var(--space-sm)}.nav-menu .nav-item{width:100%}.nav-menu .nav-item .nav-link{width:100%;justify-content:center}.posts-grid{grid-template-columns:1fr}.post .post-content.has-toc{grid-template-columns:minmax(0, 1fr)}.post .post-content.has-toc .toc{display:none}.post-navigation{grid-template-columns:1fr}.post-navigation a.nav-prev,.post-navigation a.nav-next{grid-column:1}.hero-title{font-size:2rem !important}.section-title{font-size:2rem}}.MathJax{font-size:1.1em}mjx-container[display="true"],.MathJax_Display{overflow-x:auto;overflow-y:hidden;max-width:100%;padding-bottom:0.35rem}mjx-container:not([display="true"]){max-width:100%}.MathJax_Display{margin:var(--space-lg) 0 !important}@media print{.site-header,.site-footer,.post-share,.post-navigation,.post-comments,.theme-toggle{display:none}.post-content{grid-template-columns:1fr !important}.post-content .toc{display:none}}