:root{--bg-color: #0f172a;--text-main: #f8fafc;--text-muted: #94a3b8;--accent-primary: #38bdf8;--accent-secondary: #818cf8;--card-bg: rgba(30, 41, 59, .7);--card-border: rgba(148, 163, 184, .1);--glass-effect: blur(12px);--transition-speed: .3s;--font-family: "Inter", system-ui, -apple-system, sans-serif}body{margin:0;padding:0;font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-main);background-image:radial-gradient(circle at 10% 20%,rgba(56,189,248,.1) 0%,transparent 40%),radial-gradient(circle at 90% 80%,rgba(129,140,248,.1) 0%,transparent 40%);min-height:100vh;overflow-x:hidden}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#334155;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#475569}h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.025em}h1{font-size:3rem;background:linear-gradient(to right,var(--accent-primary),var(--accent-secondary));background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:2rem;text-align:center}@media(max-width:768px){h1{font-size:2rem;margin-bottom:1.5rem}}.container{max-width:900px;margin:0 auto;padding:2rem 1rem}.markdown-content h3{margin-top:1.5rem;margin-bottom:.75rem;color:var(--accent-primary);font-size:1.25rem}.markdown-content ul{padding-left:1.5rem;margin-bottom:1rem}.markdown-content li{margin-bottom:.5rem;color:var(--text-muted)}.markdown-content strong{color:var(--text-main);font-weight:600}.markdown-content code{background:#0000004d;padding:.2rem .4rem;border-radius:4px;font-family:Fira Code,monospace;font-size:.9em;color:#e2e8f0}.markdown-content pre{background:#020617;padding:1rem;border-radius:8px;overflow-x:auto;border:1px solid var(--card-border);margin:1rem 0}.markdown-content pre code{background:transparent;padding:0;color:#a5b4fc}.markdown-content table{width:100%;border-collapse:collapse;margin:1rem 0}.markdown-content th,.markdown-content td{text-align:left;padding:.75rem;border-bottom:1px solid var(--card-border)}.markdown-content th{color:var(--accent-secondary)}.topic-item{border-bottom:1px solid var(--card-border);background:#ffffff05;margin-bottom:8px;border-radius:8px;overflow:hidden;transition:all .3s ease}.topic-item.open{background:#ffffff0d;box-shadow:0 4px 20px #0003}.topic-header{width:100%;display:flex;justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;background:none;border:none;color:var(--text-main);cursor:pointer;text-align:left;transition:color .2s}.topic-header:hover{color:var(--accent-primary)}.topic-title{font-size:1.1rem;font-weight:500}.topic-content-wrapper{max-height:0;overflow:hidden;transition:max-height .4s cubic-bezier(.4,0,.2,1)}.topic-content-wrapper.open{max-height:60vh;overflow-y:auto}.topic-content-wrapper::-webkit-scrollbar{width:6px}.topic-content-wrapper::-webkit-scrollbar-track{background:transparent}.topic-content-wrapper::-webkit-scrollbar-thumb{background:#94a3b84d;border-radius:3px}.topic-content-wrapper::-webkit-scrollbar-thumb:hover{background:#94a3b880}.topic-content{padding:0 1.5rem 1.5rem;color:var(--text-muted);line-height:1.6}.topic-section{margin-bottom:2.5rem;background:var(--card-bg);backdrop-filter:var(--glass-effect);-webkit-backdrop-filter:var(--glass-effect);border:1px solid var(--card-border);border-radius:12px;padding:1.5rem;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}@media(max-width:768px){.topic-section{padding:1rem;margin-bottom:1.5rem}}.section-title{font-size:1.5rem;font-weight:700;margin-bottom:1.25rem;color:var(--accent-secondary);border-bottom:2px solid rgba(129,140,248,.2);padding-bottom:.5rem;display:inline-block}.section-items{display:flex;flex-direction:column;gap:.5rem}.ad-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;background:#0003;border:1px dashed var(--text-muted);border-radius:8px;margin:2rem auto;color:var(--text-muted);font-size:.9rem;transition:all .3s ease}.ad-placeholder:hover{background:#0000004d;border-color:var(--accent-primary)}.ad-banner{width:100%;max-width:728px;height:90px}.ad-square{width:300px;height:250px}.ad-fluid{width:100%;min-height:100px}.ad-label{text-transform:uppercase;letter-spacing:1px;font-weight:600;margin-bottom:.25rem}.ad-dims{font-size:.8rem;opacity:.7}@media(max-width:768px){.ad-banner{height:60px}}.category-tabs-container{padding:1rem 0;margin-bottom:2rem;overflow-x:auto;-webkit-overflow-scrolling:touch;border-bottom:1px solid var(--border-color)}.category-tabs{display:flex;gap:1rem;padding:0 1rem;min-width:min-content}.category-tabs-container.secondary{padding:.5rem 0;margin-bottom:1.5rem;border-bottom:none;background-color:transparent}.category-tab{padding:.75rem 1.5rem;border:none;border-radius:2rem;background-color:var(--card-bg);color:var(--text-secondary);font-weight:500;cursor:pointer;white-space:nowrap;transition:all .2s ease;border:1px solid var(--border-color);flex-shrink:0}.category-tab.secondary{padding:.5rem 1rem;font-size:.9rem;background-color:transparent;border:1px solid transparent}.category-tab.secondary:hover{background-color:var(--bg-secondary);border-color:var(--border-color)}.category-tab.secondary.active{background-color:var(--bg-secondary);color:var(--primary-color);border-color:var(--primary-color);box-shadow:none;font-weight:600}.category-description-container{padding:0 0 2rem;max-width:800px}.category-description{font-size:1.1rem;color:var(--text-secondary);line-height:1.6}.category-tab:hover{background-color:var(--bg-secondary);color:var(--text-primary)}.category-tab.active{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color);box-shadow:0 4px 12px #38bdf833}.category-tabs-container::-webkit-scrollbar{height:4px}.category-tabs-container::-webkit-scrollbar-track{background:transparent}.category-tabs-container::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}@media(max-width:640px){.category-tabs-container{margin:0 -1rem 2rem}.category-tab{padding:.6rem 1.2rem;font-size:.9rem}}.app-header{text-align:center;margin-bottom:3rem;padding:1rem 0}.header-icon{margin-right:1rem;vertical-align:middle}.header-description{color:var(--text-muted);font-size:1.2rem;max-width:600px;margin:0 auto;line-height:1.6}.search-container{margin-top:2rem;display:flex;justify-content:center}.search-wrapper{position:relative;width:100%;max-width:400px}.search-input{padding:.8rem 0 .8rem 1.5rem;width:100%;border-radius:50px;border:1px solid var(--card-border);background:#1e293b80;color:var(--text-main);font-size:1rem;outline:none;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);transition:all .3s ease}.search-clear-btn{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:none;border:none;padding:0;display:flex;align-items:center;justify-content:center;color:var(--text-muted);cursor:pointer;transition:color .2s}.search-clear-btn:hover{color:var(--text-main)}.search-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 2px #38bdf833}.app-footer{text-align:center;margin-top:4rem;padding-bottom:2rem;color:var(--text-muted)}.no-results{text-align:center;color:var(--text-muted);padding:2rem}@media(max-width:768px){.app-header{margin-bottom:2rem}.header-icon{margin-right:.5rem;width:36px;height:36px}.header-description{font-size:1rem;padding:0 1rem}.search-input{width:90%;padding:.8rem 1rem}}