:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-secondary: #64748b;--color-background: #ffffff;--color-background-alt: #f8fafc;--color-surface: #ffffff;--color-text: #1e293b;--color-text-muted: #64748b;--color-text-light: #94a3b8;--color-border: #e2e8f0;--color-border-light: #f1f5f9;--font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-family-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;--font-family-code: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", "Courier New", monospace;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-size-4xl: 2.25rem;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--radius-sm: .25rem;--radius-md: .375rem;--radius-lg: .5rem;--radius-xl: .75rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--container-sm: 640px;--container-md: 768px;--container-lg: 1024px;--container-xl: 1280px}@media(prefers-color-scheme:dark){:root{--color-primary: #3b82f6;--color-primary-hover: #60a5fa;--color-secondary: #94a3b8;--color-background: #0f172a;--color-background-alt: #1e293b;--color-surface: #1e293b;--color-text: #f1f5f9;--color-text-muted: #94a3b8;--color-text-light: #64748b;--color-border: #334155;--color-border-light: #1e293b}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}body{font-family:var(--font-family-base);font-size:var(--font-size-base);line-height:var(--line-height-normal);color:var(--color-text);background-color:var(--color-background);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-family:var(--font-family-heading);font-weight:600;line-height:var(--line-height-tight);color:var(--color-text);margin-bottom:var(--spacing-md)}h1{font-size:var(--font-size-4xl);font-weight:700;letter-spacing:-.02em}h2{font-size:var(--font-size-3xl);letter-spacing:-.01em}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}h5{font-size:var(--font-size-lg)}h6{font-size:var(--font-size-base)}p{margin-bottom:var(--spacing-md)}a{color:var(--color-primary);text-decoration:none;transition:color .2s ease}a:hover{color:var(--color-primary-hover);text-decoration:underline}.container{width:100%;max-width:var(--container-lg);margin-left:auto;margin-right:auto;padding-left:var(--spacing-md);padding-right:var(--spacing-md)}@media(min-width:640px){.container{padding-left:var(--spacing-lg);padding-right:var(--spacing-lg)}}@media(min-width:1024px){.container{padding-left:var(--spacing-xl);padding-right:var(--spacing-xl)}}.nav{position:sticky;top:0;z-index:100;background-color:var(--color-surface);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-sm)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:4rem}.nav-logo{font-size:var(--font-size-xl);font-weight:700;color:var(--color-text);text-decoration:none;transition:color .2s ease}.nav-logo:hover{color:var(--color-primary);text-decoration:none}.nav-menu{display:flex;align-items:center;gap:var(--spacing-lg);list-style:none}.nav-link{font-size:var(--font-size-base);font-weight:500;color:var(--color-text-muted);text-decoration:none;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);transition:all .2s ease}.nav-link:hover{color:var(--color-primary);background-color:var(--color-background-alt);text-decoration:none}.nav-link.active{color:var(--color-primary);font-weight:600}.main{flex:1;padding-top:var(--spacing-2xl);padding-bottom:var(--spacing-2xl)}.footer{background-color:var(--color-surface);border-top:1px solid var(--color-border);padding:var(--spacing-xl) 0;margin-top:auto}.footer-inner{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md);text-align:center}.footer-link{color:var(--color-text-muted);font-size:var(--font-size-sm);text-decoration:none;transition:color .2s ease}.footer-link:hover{color:var(--color-primary);text-decoration:none}.footer-copy{color:var(--color-text-light);font-size:var(--font-size-sm)}.article{max-width:var(--container-md);margin-left:auto;margin-right:auto}.article-header{margin-bottom:var(--spacing-2xl);padding-bottom:var(--spacing-lg);border-bottom:1px solid var(--color-border)}.article-meta{display:flex;flex-wrap:wrap;gap:var(--spacing-md);margin-top:var(--spacing-md);font-size:var(--font-size-sm);color:var(--color-text-muted)}.article-meta-item{display:inline-flex;align-items:center;gap:var(--spacing-xs)}.article-tag{display:inline-block;padding:var(--spacing-xs) var(--spacing-sm);background-color:var(--color-background-alt);color:var(--color-text-muted);font-size:var(--font-size-xs);border-radius:var(--radius-full);text-decoration:none;transition:all .2s ease}.article-tag:hover{background-color:var(--color-primary);color:#fff;text-decoration:none}.article-content{font-size:var(--font-size-lg);line-height:var(--line-height-relaxed)}.article-content h2{margin-top:var(--spacing-2xl);margin-bottom:var(--spacing-md)}.article-content h3{margin-top:var(--spacing-xl);margin-bottom:var(--spacing-md)}.article-content p{margin-bottom:var(--spacing-md)}.article-content a{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:2px}.article-content ul,.article-content ol{margin-bottom:var(--spacing-md);padding-left:var(--spacing-xl)}.article-content li{margin-bottom:var(--spacing-sm)}.article-content code{font-family:var(--font-family-code);font-size:.875em;padding:.125rem .25rem;background-color:var(--color-background-alt);border-radius:var(--radius-sm)}.article-content pre{font-family:var(--font-family-code);font-size:var(--font-size-sm);padding:var(--spacing-md);background-color:var(--color-background-alt);border-radius:var(--radius-md);overflow-x:auto;margin-bottom:var(--spacing-md)}.article-content pre code{padding:0;background-color:transparent}.article-content blockquote{padding-left:var(--spacing-md);border-left:4px solid var(--color-primary);color:var(--color-text-muted);font-style:italic;margin-bottom:var(--spacing-md)}.article-content img{max-width:100%;height:auto;border-radius:var(--radius-md);margin-bottom:var(--spacing-md)}.article-content hr{border:none;border-top:1px solid var(--color-border);margin:var(--spacing-xl) 0}.blog-list{display:grid;gap:var(--spacing-xl);max-width:var(--container-md);margin-left:auto;margin-right:auto}.blog-card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);transition:all .2s ease}.blog-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md)}.blog-card-title{font-size:var(--font-size-2xl);font-weight:600;margin-bottom:var(--spacing-sm)}.blog-card-title a{color:var(--color-text);text-decoration:none;transition:color .2s ease}.blog-card-title a:hover{color:var(--color-primary);text-decoration:none}.blog-card-description{color:var(--color-text-muted);margin-bottom:var(--spacing-md);line-height:var(--line-height-normal)}.blog-card-meta{display:flex;flex-wrap:wrap;gap:var(--spacing-md);font-size:var(--font-size-sm);color:var(--color-text-light)}.blog-card-category{color:var(--color-primary);font-weight:500}.hero{text-align:center;padding:var(--spacing-3xl) 0}.hero-title{font-size:clamp(var(--font-size-3xl),5vw,var(--font-size-4xl));font-weight:700;margin-bottom:var(--spacing-md)}.hero-description{font-size:var(--font-size-lg);color:var(--color-text-muted);max-width:var(--container-sm);margin-left:auto;margin-right:auto;margin-bottom:var(--spacing-xl)}.hero-actions{display:flex;gap:var(--spacing-md);justify-content:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--font-size-base);font-weight:500;border-radius:var(--radius-md);border:none;cursor:pointer;text-decoration:none;transition:all .2s ease}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-primary-hover);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--color-background-alt);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover{background-color:var(--color-border);color:var(--color-text);text-decoration:none}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.mt-1{margin-top:var(--spacing-sm)}.mt-2{margin-top:var(--spacing-md)}.mt-3{margin-top:var(--spacing-lg)}.mt-4{margin-top:var(--spacing-xl)}.mb-1{margin-bottom:var(--spacing-sm)}.mb-2{margin-bottom:var(--spacing-md)}.mb-3{margin-bottom:var(--spacing-lg)}.mb-4{margin-bottom:var(--spacing-xl)}@media(max-width:640px){h1{font-size:var(--font-size-3xl)}h2{font-size:var(--font-size-2xl)}.hero{padding:var(--spacing-2xl) 0}.article-content{font-size:var(--font-size-base)}}@media print{.nav,.footer{display:none}body{background-color:#fff;color:#000}.article-content a{color:inherit;text-decoration:underline}}