:root{--bg-color: #111827;--card-bg-color: #1F2937;--text-color: #F9FAFB;--muted-text-color: #9CA3AF;--border-color: #374151;--accent-color: #10B981;--accent-hover-color: #059669;--header-bg-color: #1F2937;--footer-bg-color: #000000;--font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--border-radius: 8px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-primary);line-height:1.65;background-color:var(--bg-color);color:var(--text-color);font-size:16px}.container{max-width:1240px;margin:0 auto;padding:0 20px}h1,h2,h3{font-weight:700;margin-bottom:1rem;line-height:1.2;color:var(--text-color)}h1{font-size:2.8rem;letter-spacing:-1px}h2{font-size:2rem;border-bottom:2px solid var(--border-color);padding-bottom:.5rem}h3{font-size:1.25rem;font-weight:600}p{margin-bottom:1.5rem;color:var(--muted-text-color)}p.subtitle{font-size:1.2rem;max-width:700px;margin-left:auto;margin-right:auto;color:#d1d5db}a{color:var(--accent-color);text-decoration:none;font-weight:600;transition:color .2s ease-in-out}a:hover{color:var(--accent-hover-color);text-decoration:underline}ul{list-style:none}.site-header{background:var(--header-bg-color);border-bottom:1px solid var(--border-color);padding:1rem 0;position:sticky;top:0;z-index:10}.site-header .container{display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.5rem;font-weight:700;color:var(--text-color);text-decoration:none}.logo:hover{color:var(--accent-color);text-decoration:none}.main-nav ul{display:flex;gap:30px}.main-nav a{font-weight:600;font-size:1rem;color:var(--muted-text-color);text-decoration:none;padding:8px 4px;position:relative}.main-nav a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background-color:var(--accent-color);transition:width .3s ease}.main-nav a:hover:after,.main-nav a.active:after{width:100%}.main-nav a:hover,.main-nav a.active{color:var(--text-color);text-decoration:none}.page-content{display:grid;grid-template-columns:1fr;gap:50px;padding-top:4rem;padding-bottom:4rem}.intro{text-align:center;margin-bottom:4rem}.intro h1{color:var(--text-color)}.articles-section h2{margin-bottom:2.5rem;text-align:center;border:0}.articles-grid{display:grid;grid-template-columns:1fr;gap:30px}.card{background:var(--card-bg-color);border:1px solid var(--border-color);border-radius:var(--border-radius);padding:2rem;display:flex;flex-direction:column;transition:border-color .2s ease,transform .2s ease}.card:hover{transform:translateY(-4px);border-color:var(--accent-color)}.card h3{margin-top:0;margin-bottom:.75rem}.card p{flex-grow:1}.card ul{padding-left:0}.card ul li{margin-bottom:1rem;padding-bottom:1rem;border-bottom:1px solid var(--border-color)}.card ul li:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.btn{display:inline-block;background:var(--accent-color);color:#fff;padding:12px 28px;font-weight:600;text-align:center;transition:background-color .2s ease;margin-top:1rem;border:none;border-radius:var(--border-radius)}.btn:hover{background:var(--accent-hover-color);color:#fff;text-decoration:none}.article-header{margin-bottom:2.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-color)}.article-header h1{font-size:2.5rem}.article-meta{font-size:.9rem;color:var(--muted-text-color);margin-top:1rem;font-weight:600}.article-content h2{margin-top:3rem;font-size:1.75rem}.article-content ul{list-style-position:outside;list-style-type:"✓  ";margin-bottom:1.5rem;padding-left:20px}.article-content li{margin-bottom:.75rem;padding-left:10px}.sidebar .widget{background:var(--card-bg-color);padding:1.5rem;border:1px solid var(--border-color);border-radius:var(--border-radius);margin-bottom:30px}.sidebar .widget-title{margin-top:0;padding-bottom:.75rem;font-size:1.1rem;font-weight:700;margin-bottom:1rem;border-bottom:1px solid var(--border-color)}.sidebar .widget ul{margin-top:0}.sidebar .widget ul li{margin-bottom:.75rem;border-bottom:1px solid var(--border-color);padding-bottom:.75rem}.sidebar .widget ul li:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.sidebar .widget p{margin-bottom:0}.site-footer{background:var(--footer-bg-color);color:var(--muted-text-color);text-align:center;padding:3rem 0;margin-top:3rem;border-top:1px solid var(--border-color)}.site-footer a{color:var(--muted-text-color);margin:0 15px;font-weight:400;opacity:.8}.site-footer a:hover{opacity:1;color:var(--text-color)}.site-footer .footer-links{margin-bottom:1rem}.site-footer p{margin-bottom:0;font-size:.9rem;opacity:.6}@media (min-width: 768px){h1{font-size:3.2rem}.articles-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1024px){.page-content{grid-template-columns:2.5fr 1fr}.home .page-content{grid-template-columns:1fr}.home .articles-grid{grid-template-columns:repeat(3,1fr)}}