*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background:#f0f2f5;min-height:100vh}.app{max-width:900px;margin:0 auto;padding:2rem}.header{text-align:center;margin-bottom:2rem}.header-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.header h1{font-size:2rem;color:#1a1a2e}.lang-toggle{padding:.5rem 1rem;background:#f3f4f6;color:#374151;border:1px solid #d1d5db;border-radius:6px;font-size:.875rem;cursor:pointer;transition:background .2s}.lang-toggle:hover{background:#e5e7eb}.controls{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-bottom:1rem}.controls button{padding:.75rem 1.5rem;border:none;border-radius:8px;font-size:1rem;cursor:pointer;transition:all .2s}.controls button.primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.controls button.primary:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.controls button.secondary{background:#e2e8f0;color:#475569}.controls button.secondary:hover{background:#cbd5e1}.controls button:disabled{opacity:.6;cursor:not-allowed;transform:none}.stats{color:#64748b;font-size:.9rem}.content{background:#fff;border-radius:12px;padding:2rem;box-shadow:0 4px 20px #00000014;min-height:400px}.incremark-block{transition:border-color .2s}.incremark-block.pending{border-left:3px solid #a855f7;padding-left:1rem;margin-left:-1rem}.incremark-heading{margin:1em 0 .5em;color:#1e293b}.incremark-paragraph{margin:.75em 0;line-height:1.6;color:#334155}.incremark-code{margin:1em 0;border-radius:8px;overflow:hidden;background:#1e293b}.incremark-code .code-header{padding:.5rem 1rem;background:#0f172a;color:#94a3b8;font-size:.8rem}.incremark-code pre{margin:0;padding:1rem;overflow-x:auto}.incremark-code code{color:#e2e8f0;font-family:Fira Code,monospace;font-size:.9rem}.incremark-list{margin:.75em 0;padding-left:1.5em}.incremark-list li{margin:.25em 0;line-height:1.6}.incremark-blockquote{margin:1em 0;padding:1em 1.5em;border-left:4px solid #667eea;background:#f8fafc;border-radius:0 8px 8px 0}.incremark-table-wrapper,.content .table-wrapper{overflow-x:auto;margin:1em 0;-webkit-overflow-scrolling:touch}.incremark-table,.content table{width:100%;border-collapse:collapse;min-width:400px}.incremark-table th,.incremark-table td,.content table th,.content table td{padding:.75rem;border:1px solid #e2e8f0;text-align:left}.incremark-table th,.content table th{background:#f8fafc;font-weight:600}.incremark-hr{margin:2em 0;border:none;height:2px;background:linear-gradient(90deg,transparent,#e2e8f0,transparent)}.incremark-inline-code{padding:.2em .4em;background:#0000000f;border-radius:4px;font-family:Fira Code,monospace;font-size:.9em;color:#e11d48}.content img{max-width:100%;height:auto;border-radius:8px;margin:1em 0}.content video,.content iframe{max-width:100%;border-radius:8px;margin:1em 0}.content input[type=checkbox]{margin-right:.5rem;accent-color:#667eea}.content del{color:#94a3b8}.content strong{font-weight:600;color:#1e293b}.content em{font-style:italic}.content a{color:#667eea;text-decoration:none}.content a:hover{text-decoration:underline}.content p,.content li{word-wrap:break-word;overflow-wrap:break-word}.checkbox{display:flex;align-items:center;gap:.5rem;cursor:pointer;font-size:.9rem;color:#475569}.checkbox input{width:16px;height:16px}.benchmark-toggle input{accent-color:#10b981}.input-panel{background:#fff;border-radius:12px;padding:1rem;margin-bottom:1.5rem;box-shadow:0 4px 20px #00000014}.input-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem;font-weight:500;color:#1e293b}.use-example-btn{background:#e2e8f0;color:#475569;padding:.4rem 1rem;font-size:.85rem;border:none;border-radius:6px;cursor:pointer;transition:background .2s}.use-example-btn:hover{background:#cbd5e1}.markdown-input{width:100%;padding:.75rem;border:1px solid #e2e8f0;border-radius:8px;font-family:Fira Code,Monaco,monospace;font-size:.875rem;resize:vertical;line-height:1.6;box-sizing:border-box}.markdown-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea26}.benchmark-panel{background:linear-gradient(135deg,#1e293b,#0f172a);border-radius:12px;padding:1.5rem;margin-bottom:1.5rem;color:#f1f5f9}.benchmark-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.benchmark-header h2{font-size:1.25rem;margin:0}.benchmark-btn{background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;padding:.5rem 1.5rem;border-radius:8px;cursor:pointer;font-size:1rem;transition:all .2s}.benchmark-btn:hover:not(:disabled){background:linear-gradient(135deg,#059669,#047857);transform:translateY(-2px)}.benchmark-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.benchmark-progress{height:4px;background:#334155;border-radius:2px;margin-bottom:1rem;overflow:hidden}.progress-bar{height:100%;background:linear-gradient(90deg,#10b981,#3b82f6);transition:width .3s ease}.benchmark-results{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:1rem}.benchmark-card{background:#ffffff0d;border-radius:8px;padding:1rem;text-align:center}.benchmark-card h3{font-size:.9rem;margin-bottom:.75rem;opacity:.9}.benchmark-card.traditional{border-left:3px solid #ef4444}.benchmark-card.incremark{border-left:3px solid #10b981}.benchmark-card.speedup{border-left:3px solid #3b82f6}.benchmark-card .stat{display:flex;justify-content:space-between;font-size:.85rem;margin:.25rem 0}.benchmark-card .label{opacity:.7}.benchmark-card .value{font-weight:600}.speedup-value{font-size:2rem;font-weight:700;color:#3b82f6}.benchmark-note{font-size:.85rem;opacity:.7;margin:0}@media (max-width: 600px){.benchmark-results{grid-template-columns:1fr}}