:root{--bg-primary:#fff;--bg-secondary:#f8f9fa;--bg-card:#fff;--text-primary:#333;--text-secondary:#636e72;--border-color:#e1e8ed;--shadow:#0000001a;--shadow-hover:#00000026;--accent:#4a5568;--accent-dark:#2d3748;--input-bg:#fff}[data-theme=dark]{--bg-primary:#1a202c;--bg-secondary:#2d3748;--bg-card:#2d3748;--text-primary:#e2e8f0;--text-secondary:#a0aec0;--border-color:#4a5568;--shadow:#0000004d;--shadow-hover:#00000080;--accent:#63b3ed;--accent-dark:#4299e1;--input-bg:#2d3748}*{box-sizing:border-box;margin:0;padding:0}html,body{color:var(--text-primary);background:var(--bg-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;transition:background-color .3s,color .3s}a{color:inherit;text-decoration:none}a:hover{opacity:.8}.header{background:var(--bg-card);box-shadow:0 2px 4px var(--shadow);z-index:100;position:sticky;top:0}.nav-container{justify-content:space-between;align-items:center;max-width:1200px;height:60px;margin:0 auto;padding:0 1rem;display:flex}.nav-logo{color:var(--text-primary);font-size:1.5rem;font-weight:700}.theme-toggle-switch{cursor:pointer;background:#e1e8ed;border:none;border-radius:11px;justify-content:space-between;align-items:center;width:44px;height:22px;margin-right:1.5rem;padding:0 5px;font-size:10px;transition:background .3s;display:flex;position:relative}.theme-toggle-switch:before{content:"☀";color:#888;z-index:1;line-height:1}.theme-toggle-switch:after{content:"☾";color:#888;z-index:1;line-height:1}[data-theme=dark] .theme-toggle-switch{background:#4a5568}.theme-toggle-switch:hover{opacity:.8}.lang-switch{border:1px solid var(--border-color);color:var(--text-primary);border-radius:999px;padding:.35rem .9rem;font-size:.85rem;line-height:1;transition:background .2s,color .2s}.lang-switch:hover,.lang-switch:focus{background:var(--accent);color:#fff}.toggle-slider{z-index:2;background:#fff;border-radius:50%;width:18px;height:18px;transition:transform .3s;position:absolute;top:2px;left:2px;box-shadow:0 2px 4px #0003}.toggle-slider.active{transform:translate(22px)}.nav-menu-container{position:relative}.nav-menu{background:var(--bg-card);box-shadow:0 4px 10px var(--shadow);border:1px solid var(--border-color);z-index:1000;border-radius:8px;flex-direction:column;gap:0;width:auto;min-width:200px;padding:1rem;list-style:none;display:none;position:absolute;top:45px;right:0}.nav-menu.open{display:flex}.nav-menu li{padding:.6rem 0}.nav-menu a{display:block}.nav-toggle{cursor:pointer;background:0 0;border:none;display:block}.nav-toggle .bar{background:var(--text-primary);width:24px;height:2px;margin:5px 0;transition:all .2s;display:block}.nav-menu a{font-weight:500;transition:color .2s}.nav-menu a:hover{color:var(--accent)}.main{min-height:calc(100vh - 120px)}.home{max-width:1200px;margin:0 auto;padding:0 1rem}.hero{background:linear-gradient(135deg,var(--accent)0%,var(--accent-dark)100%);color:#fff;text-align:center;border-radius:12px;margin:2rem 0;padding:4rem 2rem}.hero h1{margin-bottom:1rem;font-size:3rem;font-weight:700}.hero p{max-width:600px;margin:0 auto 1rem;font-size:1.2rem}.search-bar{max-width:800px;margin:3rem auto 2rem;padding:0 1rem}.search-input{border:2px solid var(--border-color);background:var(--input-bg);width:100%;color:var(--text-primary);border-radius:50px;outline:none;padding:1rem 1.5rem;font-size:1rem;transition:border-color .2s,box-shadow .2s}.search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--shadow)}.search-input::placeholder{color:#a0aec0}.search-results-count{text-align:center;color:var(--text-secondary);margin-top:1rem;font-size:.95rem}.categories{margin:4rem 0}.categories h2{text-align:center;color:var(--text-primary);margin-bottom:2rem;font-size:2.5rem}.category-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.2rem;margin-top:2rem;display:grid}.category-card{background:var(--bg-card);box-shadow:0 2px 4px var(--shadow);border:1px solid var(--border-color);border-radius:10px;padding:1.2rem;transition:transform .2s,box-shadow .2s}.category-card:hover{box-shadow:0 4px 8px var(--shadow-hover);transform:translateY(-2px)}.category-card h3{color:var(--text-primary);margin-bottom:.5rem;font-size:1.1rem}.category-card p{color:var(--text-secondary);font-size:.9rem}.featured-posts{margin:4rem 0}.featured-posts h2{text-align:center;color:var(--text-primary);margin-bottom:2rem;font-size:2.5rem}.posts-grid{grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem;display:grid}.post-card{background:var(--bg-card);box-shadow:0 4px 6px var(--shadow);border:1px solid var(--border-color);border-radius:12px;padding:2rem;transition:transform .2s,box-shadow .2s}.post-card:hover{box-shadow:0 8px 15px var(--shadow-hover);transform:translateY(-4px)}.post-card h3{color:var(--text-primary);margin-bottom:1rem;font-size:1.3rem;line-height:1.4}.post-card p{color:var(--text-secondary);margin-bottom:1rem}.post-meta{justify-content:space-between;align-items:center;font-size:.9rem;display:flex}.category{background:var(--accent);color:#fff;border-radius:20px;padding:.25rem .75rem;font-size:.8rem;font-weight:500}.date{color:var(--text-secondary)}.post{max-width:800px;margin:0 auto;padding:2rem 1rem}.post-header{text-align:center;margin-bottom:3rem}.post-header h1{color:var(--text-primary);margin-bottom:1rem;font-size:2.5rem;line-height:1.2}.post-excerpt{color:var(--text-secondary);max-width:600px;margin:0 auto;font-size:1.2rem}.post-content{font-size:1.1rem;line-height:1.8}.post-content img{border-radius:8px;max-width:100%;height:auto;margin:1.5rem auto;display:block;box-shadow:0 4px 12px #0000001a}.post-content h1,.post-content h2,.post-content h3{color:var(--text-primary);margin:2rem 0 1rem}.post-content h2{border-bottom:2px solid var(--accent);padding-bottom:.5rem;font-size:1.8rem}.post-content h3{color:var(--accent);font-size:1.4rem}.post-content p{margin-bottom:1.5rem}.post-content ul,.post-content ol{margin-bottom:1.5rem;padding-left:2rem}.post-content li{margin-bottom:.5rem}.post-content strong{color:var(--text-primary);font-weight:600}.post-content code{background:var(--bg-secondary);color:var(--text-primary);border-radius:4px;padding:.2rem .4rem;font-family:Monaco,Menlo,monospace;font-size:.9rem}.post-content blockquote{border-left:4px solid var(--accent);color:var(--text-secondary);margin:1.5rem 0;padding-left:1rem;font-style:italic}.post-content table{border-collapse:collapse;border:1px solid var(--border-color);width:100%;box-shadow:0 2px 6px var(--shadow);border-radius:12px;margin:1.5rem 0;overflow:hidden}.post-content th,.post-content td{border:1px solid var(--border-color);text-align:left;padding:.75rem 1rem}.post-content thead th{background:var(--bg-secondary);color:var(--text-primary);font-weight:600}[data-theme=dark] .post-content thead th{background:#3a455b}.post-content tbody tr:nth-child(2n){background:#00000005}[data-theme=dark] .post-content tbody tr:nth-child(2n){background:#ffffff0d}.post-content tbody tr:hover{background:#4c85a614}[data-theme=dark] .post-content tbody tr:hover{background:#63b3ed26}.page-container{max-width:800px;margin:0 auto;padding:2rem 1rem}.footer{background:var(--accent-dark);color:#fff;text-align:center;margin-top:4rem;padding:2rem}.footer__links{flex-wrap:wrap;justify-content:center;gap:1.5rem;margin-top:.75rem;display:flex}.footer__links a{color:var(--color-muted,#ccc);font-weight:500;text-decoration:none}.footer__links a:hover,.footer__links a:focus{color:var(--color-accent,#ffd166);text-decoration:underline}@media (max-width:768px){.nav-menu{border:1px solid var(--border-color);z-index:1000;border-bottom:none;border-radius:8px;width:200px;min-width:auto;padding:1rem;top:25px;left:auto}.hero h1{font-size:2rem}.hero p{font-size:1rem}.category-grid,.posts-grid{grid-template-columns:1fr}.post-header h1{font-size:2rem}}