:root{--bg-color: #FDFBF7;--text-color: #2D2D2D;--text-secondary: #666666;--text-muted: #888888;--border-solid: #D0C8B8;--border-dotted: #C0B8A8;--success: #228B22;--error: #C41E3A;--accent: #B8860B;--highlight-bg: #F8F5EF;--card-bg: #FFFFFF;--icon-bg: #F0EBE0;--top-bar-height: 56px}*{box-sizing:border-box}body{margin:0;font-family:"Courier New",Courier,monospace;font-size:16px;background-color:var(--bg-color);color:var(--text-color);line-height:1.6;display:flex;flex-direction:column;align-items:center;min-height:100vh;padding-top:var(--top-bar-height)}.top-bar{position:fixed;top:0;left:0;right:0;height:var(--top-bar-height);background:var(--card-bg);border-bottom:2px solid var(--text-color);display:flex;align-items:center;justify-content:center;z-index:1000;padding:0 24px}.nav-container{width:100%;max-width:900px;display:flex;align-items:center;justify-content:space-between}.logo{font-weight:bold;font-size:22px;color:var(--text-color);text-decoration:none;transition:color .2s}.logo:hover{color:var(--accent)}.nav-links{display:flex;gap:24px}.nav-link{color:var(--text-secondary);text-decoration:none;font-size:16px;transition:color .2s}.nav-link:hover{color:var(--accent)}.nav-link.active{color:var(--text-color);font-weight:bold}.lang-switcher{display:flex;gap:8px;align-items:center}.lang-btn{font-size:14px;padding:4px 8px;cursor:pointer;opacity:.5;transition:opacity .2s;text-decoration:none;color:var(--text-secondary);border:1px solid rgba(0,0,0,0)}.lang-btn:hover{opacity:1;text-decoration:none}.lang-btn.active{opacity:1;color:var(--text-color);font-weight:bold;border:1px solid var(--border-solid)}.container{width:100%;max-width:900px;padding:60px 24px;animation:fadeIn .5s ease-out}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}h1,h2,h3{margin:0;font-weight:bold;line-height:1.3}h1{font-size:42px;margin-bottom:24px;color:var(--text-color);padding-bottom:16px;border-bottom:2px solid 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var(--text-color);border-radius:3px;padding:12px 24px;font-family:inherit;font-size:16px;font-weight:bold;cursor:pointer;transition:all .15s;text-decoration:none;display:inline-block}.btn-secondary:hover{background:var(--text-color);color:var(--card-bg);text-decoration:none}.hero{text-align:center;margin-bottom:60px}.hero h1{border-bottom:none;padding-bottom:0}.hero .subtitle{max-width:600px;margin:0 auto 28px auto}.cta-buttons{display:flex;gap:12px;justify-content:center;margin-top:24px}.card{background:var(--card-bg);border:1px solid var(--border-solid);padding:24px;margin-bottom:20px;transition:all .15s}.card:hover{border-color:var(--text-color)}.card h3{margin-top:0;padding-bottom:8px;border-bottom:1px dotted var(--border-dotted)}.card p:last-child{margin-bottom:0}.features-grid{display:grid;grid-template-columns:repeat(2, 1fr);gap:20px;margin-top:24px}.feature-card{background:var(--card-bg);border:1px solid var(--border-solid);padding:24px;transition:all 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0;text-align:center}.placeholder p{margin:0;color:var(--text-muted)}.section{margin-bottom:60px}.blog-list{margin-top:24px}.blog-post-preview{background:var(--card-bg);border:1px solid var(--border-solid);padding:24px;margin-bottom:20px;transition:all .15s}.blog-post-preview:hover{border-color:var(--text-color)}.blog-post-preview h3{margin-top:0;margin-bottom:8px}.blog-post-preview h3 a{color:var(--text-color);text-decoration:none}.blog-post-preview h3 a:hover{color:var(--accent)}.blog-post-meta{font-size:14px;color:var(--text-muted);margin-bottom:12px}.blog-post-preview p{margin-bottom:0}.blog-post-content{margin-top:32px}.blog-post-content h2{margin-top:40px}.blog-post-content h3{margin-top:32px}.blog-post-content pre{background:var(--card-bg);border:1px solid var(--border-solid);padding:16px;overflow-x:auto;margin:16px 0}.blog-post-content code{font-family:"Courier New",Courier,monospace;font-size:14px}.blog-post-content p code{background:var(--highlight-bg);padding:2px 6px;border:1px solid var(--border-dotted)}.blog-post-content blockquote{border-left:3px solid var(--accent);margin:16px 0;padding-left:16px;color:var(--text-secondary);font-style:italic}.footer{padding-top:40px;padding-bottom:40px;border-top:1px dotted var(--border-dotted);display:flex;justify-content:center;align-items:center;gap:24px;width:100%;margin-top:60px}.footer span{color:var(--text-muted);font-size:15px}.footer a{color:var(--text-muted);text-decoration:none;font-size:15px;transition:color .2s}.footer a:hover{color:var(--accent)}.mobile-menu-btn{display:none;background:none;border:1px solid var(--border-solid);padding:8px;cursor:pointer;color:var(--text-color)}.mobile-menu{display:none;position:fixed;top:var(--top-bar-height);left:0;right:0;background:var(--card-bg);border-bottom:2px solid var(--text-color);padding:16px;z-index:999;flex-direction:column;gap:12px}.mobile-menu.open{display:flex}.mobile-menu a{color:var(--text-secondary);text-decoration:none;padding:12px 16px;border:1px solid var(--border-solid);text-align:center;font-size:16px}.mobile-menu a:hover,.mobile-menu a.active{background:var(--highlight-bg);color:var(--text-color)}.mobile-menu .mobile-lang{display:flex;gap:8px;justify-content:center;margin-top:8px;padding-top:12px;border-top:1px dotted var(--border-dotted)}.mobile-menu .mobile-lang a{flex:1;max-width:100px}@media (max-width: 768px){.container{padding:40px 16px}.top-bar{padding:0 16px}h1{font-size:30px}h2{font-size:24px}.nav-links{gap:16px}.nav-link{font-size:14px}.features-grid{grid-template-columns:1fr}.cta-buttons{flex-direction:column;align-items:center}.btn-primary,.btn-secondary{width:100%;max-width:300px;text-align:center}.footer{flex-wrap:wrap;gap:16px}}@media (max-width: 600px){.nav-links{display:none}.lang-switcher{display:none}.mobile-menu-btn{display:flex}h1{font-size:26px}h2{font-size:22px}.footer span,.footer a{font-size:13px}}