:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:dark;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-width:320px;min-height:100vh}:root{--primary: #f59e0b;--primary-dark: #d97706;--secondary: #10b981;--danger: #ef4444;--warning: #f59e0b;--bg: #0f172a;--bg-card: #1e293b;--bg-hover: #334155;--text: #f8fafc;--text-muted: #94a3b8;--border: #334155}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}.app{max-width:1400px;margin:0 auto;padding:20px}.header{text-align:center;padding:40px 20px;background:linear-gradient(135deg,var(--primary-dark) 0%,#7c3aed 100%);border-radius:20px;margin-bottom:30px}.header h1{font-size:2.5rem;margin-bottom:10px}.header p{color:#fffc;font-size:1.1rem}.nav{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-bottom:30px}.nav-btn{background:var(--bg-card);border:2px solid var(--border);border-radius:12px;padding:16px;cursor:pointer;text-align:left;transition:all .2s ease}.nav-btn:hover{background:var(--bg-hover);border-color:var(--primary)}.nav-btn.active{background:var(--primary);border-color:var(--primary)}.nav-title{display:block;font-weight:600;font-size:1rem;margin-bottom:4px}.nav-desc{display:block;font-size:.8rem;color:var(--text-muted)}.nav-btn.active .nav-desc{color:#fffc}.content{background:var(--bg-card);border-radius:20px;padding:30px;min-height:500px}.card{background:var(--bg);border-radius:16px;padding:24px;margin-bottom:20px}.card h3{font-size:1.3rem;margin-bottom:16px;color:var(--primary)}.controls{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:24px}.control-group{display:flex;flex-direction:column;gap:6px}.control-group label{font-size:.85rem;color:var(--text-muted)}.control-group input,.control-group select{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:10px 14px;color:var(--text);font-size:1rem;min-width:120px}.control-group input:focus,.control-group select:focus{outline:none;border-color:var(--primary)}.slider-group{display:flex;flex-direction:column;gap:6px;min-width:200px}.slider-group input[type=range]{width:100%;accent-color:var(--primary)}.visualization{background:var(--bg-card);border-radius:12px;padding:24px;margin-top:20px;min-height:300px;display:flex;align-items:center;justify-content:center}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin-top:20px}.stat-card{background:var(--bg-card);border-radius:12px;padding:20px;text-align:center}.stat-value{font-size:2rem;font-weight:700;color:var(--primary)}.stat-label{font-size:.85rem;color:var(--text-muted);margin-top:4px}.stat-card.positive .stat-value{color:var(--secondary)}.stat-card.negative .stat-value{color:var(--danger)}.stat-card.warning .stat-value{color:var(--warning)}.formula{background:var(--bg);border-radius:8px;padding:16px;font-family:Fira Code,monospace;font-size:1.1rem;text-align:center;margin:16px 0;overflow-x:auto}.diagram{display:flex;justify-content:center;gap:40px;flex-wrap:wrap;padding:20px}.circle{border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;transition:all .3s ease}.population{width:300px;height:300px;background:linear-gradient(135deg,#1e293b,#334155);border:3px solid var(--border);position:relative}.population .disease{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:120px;height:120px;background:var(--danger);border-radius:50%;display:flex;align-items:center;justify-content:center}.population .no-disease{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:180px;height:180px;background:var(--secondary);border-radius:50%;display:flex;align-items:center;justify-content:center}.bar-chart{display:flex;align-items:flex-end;gap:20px;height:250px;padding:20px}.bar-group{display:flex;flex-direction:column;align-items:center;gap:8px}.bar{width:60px;background:linear-gradient(180deg,var(--primary) 0%,var(--primary-dark) 100%);border-radius:8px 8px 0 0;transition:height .3s ease}.bar-label{font-size:.85rem;color:var(--text-muted)}.bar-value{font-weight:600}.tree{display:flex;flex-direction:column;align-items:center;gap:20px}.tree-level{display:flex;gap:40px}.tree-node{background:var(--bg-card);border:2px solid var(--border);border-radius:12px;padding:16px 24px;text-align:center;min-width:140px}.tree-node.root{border-color:var(--primary)}.tree-node.positive{border-color:var(--secondary)}.tree-node.negative{border-color:var(--danger)}.tree-label{font-weight:600;margin-bottom:4px}.tree-prob{font-size:1.2rem;color:var(--primary)}.tree-prob.positive{color:var(--secondary)}.tree-prob.negative{color:var(--danger)}.tree-connector{width:2px;height:30px;background:var(--border)}.footer{text-align:center;padding:30px;color:var(--text-muted)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.card{animation:fadeIn .3s ease}button.primary-btn{background:var(--primary);border:none;border-radius:8px;padding:12px 24px;color:#fff;font-weight:600;cursor:pointer;transition:all .2s ease}button.primary-btn:hover{background:var(--primary-dark);transform:translateY(-2px)}.aqrab-tie-badge{display:flex;width:fit-content;align-items:center;gap:6px;margin:0 auto 16px;padding:7px 14px;border-radius:9999px;background:#fff8f0;border:1px solid #FDE68A;color:#b45309;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:.78rem;font-weight:600;text-decoration:none;transition:background .2s ease,transform .2s ease}.aqrab-tie-badge:hover{background:#fef3c7;transform:translateY(-1px)}.aqrab-tie-cta{text-align:center;padding:24px 20px;margin-top:30px;border-radius:16px;background:linear-gradient(135deg,rgba(245,158,11,.12),transparent 55%),#fff8f0;border:1px solid #FDE68A}.aqrab-tie-cta-link{display:inline-block;padding:10px 22px;border-radius:10px;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-weight:600;font-size:.95rem;color:#fff;background:#d97706;text-decoration:none;transition:background .2s ease,transform .2s ease}.aqrab-tie-cta-link:hover{background:#b45309;transform:translateY(-2px)}.bayes-theorem .subtitle{color:var(--text-muted);margin-bottom:24px}.explanation{background:var(--bg-card);border-radius:12px;padding:20px;margin-top:24px}.explanation h4{color:var(--primary);margin-bottom:12px}.explanation ul{margin-left:20px;color:var(--text-muted)}.explanation li{margin:8px 0}.explanation strong{color:var(--text)}.population{position:relative;transition:all .5s ease}.population .disease{transition:all .5s ease}