*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:#f5f5f5;padding:20px;line-height:1.6}.container{max-width:1600px;margin:0 auto;background:white;border-radius:8px;box-shadow:0 2px 8px #0000001a;padding:30px}h1{color:#333;margin-bottom:10px;font-size:28px}.subtitle{color:#666;margin-bottom:30px;font-size:14px}.section{margin-bottom:30px}.section-title{font-size:18px;font-weight:600;color:#333;margin-bottom:15px;padding-bottom:10px;border-bottom:2px solid #e0e0e0}.file-comparison{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;margin-bottom:20px}.file-panel{border:1px solid #ddd;border-radius:4px;overflow:hidden}.file-header{background:#f8f8f8;padding:10px 15px;font-weight:600;color:#555;border-bottom:1px solid #ddd;font-size:13px}.file-content{padding:15px;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:13px;line-height:1.8;white-space:pre-wrap;word-wrap:break-word;max-height:400px;overflow-y:auto;background:#fff;resize:vertical;min-height:200px;width:100%;border:none;outline:none}.file-content:focus{outline:none}.controls{display:grid;grid-template-columns:1fr 1fr auto;gap:15px;margin-bottom:20px;align-items:end}.control-group{display:flex;flex-direction:column}.control-group label{font-size:12px;font-weight:600;color:#555;margin-bottom:5px}.control-group input{padding:10px;border:1px solid #ddd;border-radius:4px;font-size:14px}.control-group input:focus{outline:none;border-color:#4a90e2;box-shadow:0 0 0 3px #4a90e21a}button{padding:10px 20px;background:#4a90e2;color:#fff;border:none;border-radius:4px;font-size:14px;font-weight:600;cursor:pointer;transition:background .2s}button:hover{background:#357abd}button:active{transform:translateY(1px)}.result-panel{border:2px solid #4a90e2;border-radius:4px;padding:15px;background:#f0f7ff;margin-top:20px}.result-title{font-weight:600;color:#4a90e2;margin-bottom:10px}.result-content{font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:13px;line-height:1.8;white-space:pre-wrap;word-wrap:break-word;background:white;padding:15px;border-radius:4px;border:1px solid #ddd;max-height:400px;overflow-y:auto}.info-box{background:#e7f3ff;border-left:4px solid #4a90e2;padding:12px;margin-bottom:20px;border-radius:4px}.info-box strong{color:#4a90e2}.analysis-panel{margin-top:20px;padding:15px;background:#f9f9f9;border-radius:4px;border:1px solid #ddd}.analysis-item{margin-bottom:15px;padding:10px;background:white;border-radius:4px;border:1px solid #e0e0e0}.analysis-item strong{color:#4a90e2;display:block;margin-bottom:5px}.analysis-value{font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:12px;color:#333}.diff-entry{margin:5px 0;padding:5px;border-radius:3px;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:12px}.diff-entry.insert{background:#d4edda;color:#155724}.diff-entry.delete{background:#f8d7da;color:#721c24}.diff-entry.equal{background:#f8f9fa;color:#333}.range-info{display:inline-block;margin:0 5px;padding:2px 6px;background:#e7f3ff;border-radius:3px;font-family:monospace;font-size:12px;color:#4a90e2}.error-message{padding:10px;background:#f8d7da;color:#721c24;border-radius:4px;margin-top:10px;border:1px solid #f5c6cb}