:root{--color-primary: #0A84FF;--color-primary-light: #5AC8FA;--color-primary-dark: #0071E3;--color-secondary: #5E5CE6;--color-accent: #FF9500;--color-success: #34C759;--color-warning: #FF9F0A;--color-error: #FF3B30;--color-neutral-50: #FAFAFA;--color-neutral-100: #F5F5F5;--color-neutral-200: #E5E5E5;--color-neutral-300: #D4D4D4;--color-neutral-400: #A3A3A3;--color-neutral-500: #737373;--color-neutral-600: #525252;--color-neutral-700: #404040;--color-neutral-800: #262626;--color-neutral-900: #171717;--color-neutral-950: #0A0A0A;--color-bg-primary: var(--color-neutral-50);--color-bg-secondary: var(--color-neutral-100);--color-bg-tertiary: var(--color-neutral-200);--color-text-primary: var(--color-neutral-900);--color-text-secondary: var(--color-neutral-700);--color-text-tertiary: var(--color-neutral-500);--color-border: var(--color-neutral-200);--color-shadow: rgba(0, 0, 0, .1);--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.5rem;--space-6: 2rem;--space-8: 3rem;--space-10: 4rem;--space-12: 6rem;--border-radius-sm: .25rem;--border-radius-md: .5rem;--border-radius-lg: 1rem;--header-height: 4rem;--content-width-sm: 640px;--content-width-md: 768px;--content-width-lg: 1024px;--content-width-xl: 1280px;--transition-fast: .15s ease;--transition-normal: .3s ease;--transition-slow: .5s ease}.dark-theme{--color-bg-primary: var(--color-neutral-900);--color-bg-secondary: var(--color-neutral-800);--color-bg-tertiary: var(--color-neutral-700);--color-text-primary: var(--color-neutral-50);--color-text-secondary: var(--color-neutral-300);--color-text-tertiary: var(--color-neutral-500);--color-border: var(--color-neutral-700);--color-shadow: rgba(0, 0, 0, .5)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-family);line-height:1.5;color:var(--color-text-primary);background-color:var(--color-bg-primary);transition:background-color var(--transition-normal),color var(--transition-normal);min-height:100vh;overflow-x:hidden}#app{display:flex;flex-direction:column;min-height:100vh}main{flex:1;padding-top:var(--header-height);width:100%}h1,h2,h3,h4,h5,h6{line-height:1.2;margin-bottom:var(--space-4);font-weight:600}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:1rem}p{margin-bottom:var(--space-4)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-dark)}.container{width:100%;max-width:var(--content-width-lg);margin:0 auto;padding:0 var(--space-4)}.section{padding:var(--space-8) 0}.section-title{text-align:center;margin-bottom:var(--space-8)}.section-subtitle{text-align:center;color:var(--color-text-secondary);margin-top:-1rem;margin-bottom:var(--space-6);font-size:1.25rem}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.text-center{text-align:center}.page-enter{opacity:0;transform:translateY(20px)}.page-enter-active{opacity:1;transform:translateY(0);transition:opacity var(--transition-normal),transform var(--transition-normal)}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn var(--transition-normal) forwards}@media (max-width: 480px){html{font-size:14px}.section{padding:var(--space-6) 0}}@media (min-width: 768px){.container{padding:0 var(--space-5)}}@media (min-width: 1024px){.container{padding:0 var(--space-6)}}@media (min-width: 1280px){.container{max-width:var(--content-width-xl)}}@media (prefers-reduced-motion){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.home-page{overflow-x:hidden}.featured-blog-section{background-color:var(--color-bg-primary)}.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--space-5);margin-bottom:var(--space-6)}.view-all-btn{display:block;margin:0 auto}.contact-section{background-color:var(--color-primary);color:#fff}.contact-container{text-align:center;max-width:700px}.contact-content h2{font-size:2.5rem;margin-bottom:var(--space-4)}.contact-content p{font-size:1.125rem;margin-bottom:var(--space-5);opacity:.9}.contact-content .btn{background-color:#fff;color:var(--color-primary)}.contact-content .btn:hover{background-color:var(--color-neutral-100)}@media (max-width: 768px){.blog-grid{grid-template-columns:1fr}.contact-content h2{font-size:2rem}}.hero-section{height:100vh;min-height:600px;display:flex;align-items:center;padding-top:var(--header-height);overflow:hidden;position:relative}.hero-container{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-6);align-items:center}.hero-content{position:relative;z-index:1}.hero-greeting{font-size:1.25rem;color:var(--color-primary);margin-bottom:var(--space-2);font-weight:500}.hero-name{font-size:3.5rem;font-weight:700;margin-bottom:var(--space-2);line-height:1.1}.hero-title{font-size:2rem;color:var(--color-text-secondary);margin-bottom:var(--space-4);font-weight:500}.hero-description{font-size:1.125rem;color:var(--color-text-secondary);margin-bottom:var(--space-6);max-width:500px}.hero-cta{display:flex;gap:var(--space-3)}.hero-image{position:relative;width:100%;height:450px;border-radius:var(--border-radius-lg);overflow:hidden;box-shadow:0 20px 40px var(--color-shadow);transform:perspective(1000px) rotateY(-5deg);transition:transform var(--transition-normal)}.hero-image:hover{transform:perspective(1000px) rotateY(0)}.hero-image img{width:100%;height:100%;object-fit:cover}@media (max-width: 1024px){.hero-container{grid-template-columns:1fr}.hero-image{grid-row:1;height:350px;transform:none;margin-bottom:var(--space-6)}.hero-content{grid-row:2;text-align:center}.hero-description{margin-left:auto;margin-right:auto}.hero-cta{justify-content:center}}@media (max-width: 640px){.hero-section{min-height:500px;height:auto;padding:var(--space-10) 0}.hero-image{height:300px}.hero-name{font-size:2.5rem}.hero-title{font-size:1.5rem}.hero-cta{flex-direction:column}}.btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--space-2) var(--space-4);border-radius:var(--border-radius-md);font-weight:500;cursor:pointer;transition:all var(--transition-fast);border:none;text-align:center;text-decoration:none;font-size:1rem}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-primary-dark);color:#fff}.btn-secondary{background-color:var(--color-bg-tertiary);color:var(--color-text-primary)}.btn-secondary:hover{background-color:var(--color-neutral-300)}.btn-outline{background-color:transparent;border:1px solid var(--color-primary);color:var(--color-primary)}.btn-outline:hover{background-color:var(--color-primary);color:#fff}.btn-icon{margin-right:var(--space-2)}.skills-section{background-color:var(--color-bg-secondary)}.skills-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-4)}.skill-card{display:flex;background-color:var(--color-bg-primary);border-radius:var(--border-radius-md);padding:var(--space-4);box-shadow:0 4px 10px var(--color-shadow);transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.skill-card:hover{transform:translateY(-5px);box-shadow:0 8px 20px var(--color-shadow)}.skill-icon{display:flex;align-items:center;justify-content:center;width:50px;height:50px;background-color:var(--color-primary);color:#fff;border-radius:var(--border-radius-md);margin-right:var(--space-3);font-size:1.5rem}.skill-content{flex:1}.skill-name{font-size:1.25rem;margin-bottom:var(--space-2)}.skill-description{font-size:.875rem;color:var(--color-text-secondary);line-height:1.6;margin:0}@media (max-width: 640px){.skills-grid{grid-template-columns:1fr}}.blog-card{background-color:var(--color-bg-primary);border-radius:var(--border-radius-lg);overflow:hidden;box-shadow:0 5px 20px var(--color-shadow);transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.blog-card:hover{transform:translateY(-5px);box-shadow:0 10px 25px var(--color-shadow)}.blog-card-image{height:200px;overflow:hidden}.blog-card-image img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-normal)}.blog-card:hover .blog-card-image img{transform:scale(1.05)}.blog-card-content{padding:var(--space-4)}.blog-card-category{display:inline-block;padding:var(--space-1) var(--space-2);background-color:var(--color-bg-tertiary);color:var(--color-text-secondary);border-radius:var(--border-radius-sm);font-size:.75rem;font-weight:500;text-transform:uppercase;margin-bottom:var(--space-3)}.blog-card-title{font-size:1.25rem;margin-bottom:var(--space-3);transition:color var(--transition-fast)}.blog-card-title:hover{color:var(--color-primary)}.blog-card-excerpt{color:var(--color-text-secondary);font-size:.875rem;margin-bottom:var(--space-3);line-height:1.6}.blog-card-meta{display:flex;align-items:center;color:var(--color-text-tertiary);font-size:.75rem}.blog-card-dot{margin:0 var(--space-1)}@media (max-width: 640px){.blog-card-image{height:160px}.blog-card-content{padding:var(--space-3)}}.about-page{padding-bottom:var(--space-8)}.about-header{padding-top:calc(var(--header-height) + var(--space-8));padding-bottom:var(--space-8)}.about-header-container{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-8);align-items:center}.about-title{font-size:3rem;line-height:1.1;margin-bottom:var(--space-3)}.about-subtitle{font-size:1.5rem;color:var(--color-text-secondary);margin-bottom:var(--space-4)}.about-header-image{width:100%;height:400px;border-radius:var(--border-radius-lg);overflow:hidden;box-shadow:0 20px 40px var(--color-shadow)}.about-header-image img{width:100%;height:100%;object-fit:cover}.about-bio{background-color:var(--color-bg-secondary);padding:var(--space-10) 0}.bio-text{max-width:800px;margin:0 auto}.bio-text p{margin-bottom:var(--space-4);font-size:1.125rem;line-height:1.8}.about-bio h2,.about-experience h2,.about-education h2{text-align:center;margin-bottom:var(--space-6)}.experience-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(450px,1fr));gap:var(--space-4)}.experience-card{background-color:var(--color-bg-primary);padding:var(--space-5);border-radius:var(--border-radius-md);box-shadow:0 5px 15px var(--color-shadow);transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.experience-card:hover{transform:translateY(-5px);box-shadow:0 10px 25px var(--color-shadow)}.experience-card h3{margin-bottom:var(--space-1);font-size:1.25rem}.experience-card h4{color:var(--color-primary);margin-bottom:var(--space-2);font-size:1rem}.experience-period{display:block;font-size:.875rem;color:var(--color-text-tertiary);margin-bottom:var(--space-3)}.experience-card p{font-size:.9375rem;line-height:1.6;color:var(--color-text-secondary);margin:0}.about-education{background-color:var(--color-bg-secondary);padding:var(--space-10) 0}.education-list{max-width:800px;margin:0 auto}.education-item{background-color:var(--color-bg-primary);padding:var(--space-5);border-radius:var(--border-radius-md);box-shadow:0 5px 15px var(--color-shadow);margin-bottom:var(--space-4);transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.education-item:hover{transform:translateY(-5px);box-shadow:0 10px 25px var(--color-shadow)}.education-item h3{margin-bottom:var(--space-1);font-size:1.25rem}.education-item h4{color:var(--color-primary);margin-bottom:var(--space-2);font-size:1rem}.education-year{display:block;font-size:.875rem;color:var(--color-text-tertiary);margin-bottom:var(--space-3)}.education-item p{font-size:.9375rem;line-height:1.6;color:var(--color-text-secondary);margin:0}.about-cta{padding:var(--space-10) 0;text-align:center}.cta-container{max-width:700px}.cta-container h2{margin-bottom:var(--space-6);font-size:2rem}.cta-buttons{display:flex;justify-content:center;gap:var(--space-4)}@media (max-width: 1024px){.about-header-container{grid-template-columns:1fr;text-align:center}.about-header-image{grid-row:1;height:350px}.about-header-content{grid-row:2}}@media (max-width: 768px){.experience-grid{grid-template-columns:1fr}.cta-buttons{flex-direction:column;gap:var(--space-3)}.about-title{font-size:2.5rem}}@media (max-width: 480px){.about-header-image{height:250px}.about-title{font-size:2rem}.about-subtitle{font-size:1.25rem}}.resume-page{padding-top:var(--header-height)}.resume-header{background-color:var(--color-bg-secondary);padding:var(--space-8) 0}.resume-title{font-size:2.5rem;margin-bottom:var(--space-4)}.resume-actions{display:flex;gap:var(--space-3)}.resume-content{max-width:800px;margin:0 auto;padding:var(--space-8) 0}.resume-section{margin-bottom:var(--space-8)}.resume-section:last-child{margin-bottom:0}.resume-section h2{font-size:1.75rem;margin-bottom:var(--space-4);padding-bottom:var(--space-2);border-bottom:2px solid var(--color-primary)}.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:var(--space-4)}.contact-item{display:flex;align-items:center}.contact-item i{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background-color:var(--color-bg-tertiary);color:var(--color-primary);border-radius:50%;margin-right:var(--space-3);font-size:1.125rem}.contact-content{display:flex;flex-direction:column}.contact-label{font-size:.75rem;color:var(--color-text-tertiary);margin-bottom:2px}.contact-value{font-size:.875rem;font-weight:500}.skills-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-4)}.skill-category h3{font-size:1.125rem;margin-bottom:var(--space-2);color:var(--color-primary)}.skill-list{display:flex;flex-wrap:wrap;gap:var(--space-2)}.skill-item{background-color:var(--color-bg-tertiary);color:var(--color-text-secondary);padding:var(--space-1) var(--space-2);border-radius:var(--border-radius-sm);font-size:.875rem}.experience-item{margin-bottom:var(--space-5)}.experience-item:last-child{margin-bottom:0}.experience-header{margin-bottom:var(--space-3)}.experience-header h3{font-size:1.25rem;margin-bottom:var(--space-1)}.experience-company{display:block;font-size:1rem;color:var(--color-primary);margin-bottom:var(--space-1)}.experience-period{display:block;font-size:.875rem;color:var(--color-text-tertiary)}.responsibilities-list{padding-left:var(--space-5)}.responsibilities-list li{margin-bottom:var(--space-2);font-size:.9375rem;line-height:1.5}.education-item{margin-bottom:var(--space-4)}.education-item:last-child{margin-bottom:0}.education-header{margin-bottom:var(--space-3)}.education-header h3{font-size:1.25rem;margin-bottom:var(--space-1)}.education-institution{display:block;font-size:1rem;color:var(--color-primary);margin-bottom:var(--space-1)}.education-year{display:block;font-size:.875rem;color:var(--color-text-tertiary)}.education-details{font-size:.9375rem;line-height:1.5}.cert-list{padding-left:var(--space-5)}.cert-list li{margin-bottom:var(--space-2);font-size:.9375rem;line-height:1.5}@media print{.site-header,.site-footer,.resume-actions{display:none!important}.resume-page{padding-top:0}.resume-header{background-color:#fff;padding:1cm 0 .5cm}.resume-title{font-size:24pt}.resume-content{padding:0}.resume-section h2{font-size:18pt}.container{max-width:none;padding:0}.resume-section{page-break-inside:avoid;margin-bottom:1cm}a{text-decoration:none;color:#000}}@media (max-width: 768px){.skills-grid{grid-template-columns:1fr}.resume-actions{flex-direction:column}}@media (max-width: 480px){.resume-title{font-size:2rem}.contact-grid{grid-template-columns:1fr}}.blog-page{padding-top:var(--header-height)}.blog-header{background-color:var(--color-bg-secondary);padding:var(--space-8) 0;text-align:center}.blog-title{font-size:2.5rem;margin-bottom:var(--space-2)}.blog-subtitle{font-size:1.25rem;color:var(--color-text-secondary);max-width:600px;margin:0 auto}.blog-posts-section{padding:var(--space-8) 0}.category-filter{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-2);margin-bottom:var(--space-6);padding-bottom:var(--space-4);border-bottom:1px solid var(--color-border)}.filter-label{font-weight:500;margin-right:var(--space-2)}.filter-btn{background-color:var(--color-bg-tertiary);border:none;border-radius:var(--border-radius-md);padding:var(--space-1) var(--space-3);font-size:.875rem;font-weight:500;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast)}.filter-btn:hover{background-color:var(--color-neutral-300)}.filter-btn.active{background-color:var(--color-primary);color:#fff}.posts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:var(--space-5)}.empty-message{grid-column:1 / -1;text-align:center;padding:var(--space-8);color:var(--color-text-secondary);font-size:1.125rem}.newsletter-section{background-color:var(--color-bg-secondary);padding:var(--space-8) 0}.newsletter-card{display:grid;grid-template-columns:1fr 1fr;background-color:var(--color-bg-primary);border-radius:var(--border-radius-lg);overflow:hidden;box-shadow:0 10px 30px var(--color-shadow)}.newsletter-content{padding:var(--space-6)}.newsletter-content h2{font-size:1.75rem;margin-bottom:var(--space-3)}.newsletter-content p{color:var(--color-text-secondary);margin-bottom:var(--space-4)}.newsletter-form{display:flex;gap:var(--space-2)}.newsletter-form input{flex:1;padding:var(--space-2) var(--space-3);border:1px solid var(--color-border);border-radius:var(--border-radius-md);background-color:var(--color-bg-primary);color:var(--color-text-primary);font-size:1rem;transition:border-color var(--transition-fast)}.newsletter-form input:focus{outline:none;border-color:var(--color-primary)}.newsletter-image{height:100%}.newsletter-image img{width:100%;height:100%;object-fit:cover}@media (max-width: 768px){.newsletter-card{grid-template-columns:1fr}.newsletter-image{height:200px;order:-1}.newsletter-form{flex-direction:column}.filter-label{display:block;width:100%;margin-bottom:var(--space-2)}}@media (max-width: 480px){.blog-title{font-size:2rem}.blog-subtitle{font-size:1rem}.posts-grid{grid-template-columns:1fr}}.blog-post-page{padding-top:var(--header-height)}.blog-post-header{position:relative;height:60vh;min-height:400px;max-height:600px}.blog-post-image{position:absolute;top:0;left:0;width:100%;height:100%;z-index:0}.blog-post-image img{width:100%;height:100%;object-fit:cover}.blog-post-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(to bottom,#0003,#000000b3);display:flex;align-items:flex-end;z-index:1}.blog-post-header-content{padding-bottom:var(--space-8);color:#fff}.blog-post-category{display:inline-block;padding:var(--space-1) var(--space-3);background-color:var(--color-primary);border-radius:var(--border-radius-sm);font-size:.875rem;font-weight:500;margin-bottom:var(--space-3)}.blog-post-title{font-size:2.5rem;margin-bottom:var(--space-3);line-height:1.2}.blog-post-meta{font-size:1rem;opacity:.8}.blog-post-dot{margin:0 var(--space-2)}.blog-post-content{padding:var(--space-8) 0}.blog-post-content .container{display:grid;grid-template-columns:2fr 1fr;gap:var(--space-6)}.article-content{font-size:1.125rem;line-height:1.8}.article-content h1{font-size:2rem;margin:var(--space-6) 0 var(--space-4)}.article-content h2{font-size:1.5rem;margin:var(--space-5) 0 var(--space-3)}.article-content h3{font-size:1.25rem;margin:var(--space-4) 0 var(--space-2)}.article-content p{margin-bottom:var(--space-4)}.article-content pre{background-color:var(--color-bg-secondary);padding:var(--space-4);border-radius:var(--border-radius-md);overflow-x:auto;margin:var(--space-4) 0}.article-content code{font-family:monospace;font-size:.9rem;line-height:1.5;color:var(--color-text-primary)}.blog-post-sidebar{position:sticky;top:calc(var(--header-height) + var(--space-4));height:fit-content}.blog-post-sidebar h3{font-size:1.25rem;margin-bottom:var(--space-4);padding-bottom:var(--space-2);border-bottom:2px solid var(--color-primary)}.related-posts{display:flex;flex-direction:column;gap:var(--space-4)}.related-post{display:flex;gap:var(--space-3);text-decoration:none;color:var(--color-text-primary);transition:transform var(--transition-fast)}.related-post:hover{transform:translate(5px)}.related-post-image{width:80px;height:80px;border-radius:var(--border-radius-md);overflow:hidden;flex-shrink:0}.related-post-image img{width:100%;height:100%;object-fit:cover}.related-post-info{display:flex;flex-direction:column}.related-post-info h4{font-size:1rem;margin-bottom:var(--space-1);transition:color var(--transition-fast)}.related-post:hover .related-post-info h4{color:var(--color-primary)}.related-post-info span{font-size:.75rem;color:var(--color-text-tertiary)}.blog-post-cta{background-color:var(--color-bg-secondary);padding:var(--space-8) 0}.cta-card{background-color:var(--color-bg-primary);border-radius:var(--border-radius-lg);padding:var(--space-6);text-align:center;box-shadow:0 10px 30px var(--color-shadow);max-width:700px;margin:0 auto}.cta-card h2{font-size:1.75rem;margin-bottom:var(--space-3)}.cta-card p{color:var(--color-text-secondary);margin-bottom:var(--space-5)}.cta-buttons{display:flex;justify-content:center;gap:var(--space-3)}@media (max-width: 1024px){.blog-post-content .container{grid-template-columns:1fr}.blog-post-sidebar{position:static;margin-top:var(--space-6);padding-top:var(--space-6);border-top:1px solid var(--color-border)}}@media (max-width: 768px){.blog-post-header{height:50vh}.blog-post-title{font-size:2rem}.article-content{font-size:1rem}.cta-buttons{flex-direction:column;gap:var(--space-2)}}@media (max-width: 480px){.blog-post-header{height:40vh;min-height:300px}.blog-post-title{font-size:1.5rem}.blog-post-header-content{padding-bottom:var(--space-4)}}.not-found-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding-top:var(--header-height);text-align:center}.not-found-title{font-size:8rem;font-weight:700;line-height:1;margin-bottom:var(--space-2);color:var(--color-primary);opacity:.7}.not-found-subtitle{font-size:2.5rem;margin-bottom:var(--space-4)}.not-found-text{color:var(--color-text-secondary);margin-bottom:var(--space-6);max-width:600px;margin-left:auto;margin-right:auto}@media (max-width: 768px){.not-found-title{font-size:6rem}.not-found-subtitle{font-size:2rem}}@media (max-width: 480px){.not-found-title{font-size:4rem}.not-found-subtitle{font-size:1.5rem}}.site-header{position:fixed;top:0;left:0;width:100%;height:var(--header-height);background-color:var(--color-bg-primary);box-shadow:0 2px 10px var(--color-shadow);z-index:1000;transition:background-color var(--transition-normal),box-shadow var(--transition-normal)}.header-container{display:flex;align-items:center;justify-content:space-between;height:100%}.logo{font-size:1.5rem;font-weight:700;color:var(--color-text-primary);transition:color var(--transition-fast);text-decoration:none}.logo:hover{color:var(--color-primary)}.main-nav{display:flex;align-items:center}.nav-list{display:flex;list-style:none;margin:0;padding:0}.nav-list li{margin-left:var(--space-4)}.nav-list a{color:var(--color-text-secondary);text-decoration:none;font-weight:500;transition:color var(--transition-fast);position:relative}.nav-list a:hover,.nav-list a.active{color:var(--color-primary)}.nav-list a.active:after{content:"";position:absolute;bottom:-6px;left:0;width:100%;height:2px;background-color:var(--color-primary)}.theme-toggle{background:none;border:none;color:var(--color-text-secondary);cursor:pointer;font-size:1.25rem;padding:var(--space-2);margin-left:var(--space-4);transition:color var(--transition-fast)}.theme-toggle:hover{color:var(--color-primary)}.menu-toggle{display:none;background:none;border:none;color:var(--color-text-secondary);cursor:pointer;font-size:1.5rem;transition:color var(--transition-fast)}.menu-toggle:hover{color:var(--color-primary)}@media (max-width: 768px){.main-nav{position:fixed;top:var(--header-height);left:0;width:100%;height:0;background-color:var(--color-bg-primary);overflow:hidden;transition:height var(--transition-normal);box-shadow:0 4px 10px var(--color-shadow)}.main-nav.active{height:auto}.nav-list{flex-direction:column;padding:var(--space-4)}.nav-list li{margin:var(--space-3) 0;margin-left:0}.nav-list a.active:after{bottom:-3px}.menu-toggle{display:block}}.site-footer{background-color:var(--color-bg-secondary);padding:var(--space-6) 0;transition:background-color var(--transition-normal)}.footer-container{display:flex;align-items:center;justify-content:space-between}.copyright{color:var(--color-text-secondary);font-size:.875rem}.social-links{display:flex;gap:var(--space-3)}.social-links a{color:var(--color-text-secondary);font-size:1.25rem;transition:color var(--transition-fast),transform var(--transition-fast)}.social-links a:hover{color:var(--color-primary);transform:translateY(-3px)}@media (max-width: 640px){.footer-container{flex-direction:column;gap:var(--space-4);text-align:center}}