*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#0f0f1a;color:#e2e8f0}#root{width:100%;height:100%}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#1a1a2e}::-webkit-scrollbar-thumb{background:#4a5568;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#63b3ed}::selection{background:#63b3ed4d;color:#e2e8f0}.header{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;background:linear-gradient(135deg,#1a1a2e,#16213e);border-bottom:1px solid #2d3748;height:48px;box-sizing:border-box}.header-left{flex:1;display:flex;align-items:center}.back-link{color:#63b3ed;text-decoration:none;font-size:13px;transition:color .2s;white-space:nowrap}.back-link:hover{color:#90cdf4}.header-center{flex:2;display:flex;justify-content:center}.title{margin:0;font-size:18px;font-weight:600}.title-link{color:#f7fafc;text-decoration:none;transition:color .2s}.title-link:hover{color:#63b3ed}.header-right{flex:1;display:flex;align-items:center;justify-content:flex-end;gap:12px}.algorithm-idea-btn{background:linear-gradient(135deg,#2d3748,#1a202c);border:1px solid #4a5568;color:#e2e8f0;padding:6px 12px;border-radius:6px;cursor:pointer;font-size:13px;transition:all .2s;white-space:nowrap}.algorithm-idea-btn:hover{background:linear-gradient(135deg,#4a5568,#2d3748);border-color:#63b3ed}.github-link{display:flex;align-items:center;gap:6px;color:#e2e8f0;text-decoration:none;padding:6px 10px;background:linear-gradient(135deg,#2d3748,#1a202c);border:1px solid #4a5568;border-radius:6px;transition:all .2s}.github-link:hover{border-color:#63b3ed;background:linear-gradient(135deg,#4a5568,#2d3748)}.github-icon{width:18px;height:18px}.star-count{font-size:13px;font-weight:500}.data-input{padding:10px 16px;background:linear-gradient(135deg,#1a1a2e,#16213e);border-bottom:1px solid #2d3748}.input-row{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.input-section{display:flex;align-items:center;gap:8px}.input-section label{color:#a0aec0;font-size:13px;white-space:nowrap}.custom-input{width:320px;padding:6px 12px;background:#2d3748;border:1px solid #4a5568;border-radius:6px;color:#e2e8f0;font-size:13px;outline:none;transition:border-color .2s}.custom-input:focus{border-color:#63b3ed}.custom-input::placeholder{color:#718096}.submit-btn{padding:6px 16px;background:linear-gradient(135deg,#3182ce,#2b6cb0);border:none;border-radius:6px;color:#fff;font-size:13px;cursor:pointer;transition:all .2s}.submit-btn:hover{background:linear-gradient(135deg,#4299e1,#3182ce)}.examples-section{display:flex;align-items:center;gap:8px}.examples-section label{color:#a0aec0;font-size:13px;white-space:nowrap}.example-buttons{display:flex;gap:6px;flex-wrap:wrap}.example-btn{padding:5px 10px;background:linear-gradient(135deg,#2d3748,#1a202c);border:1px solid #4a5568;border-radius:6px;color:#e2e8f0;font-size:12px;cursor:pointer;transition:all .2s;white-space:nowrap}.example-btn:hover{border-color:#63b3ed;background:linear-gradient(135deg,#4a5568,#2d3748)}.random-btn{padding:5px 10px;background:linear-gradient(135deg,#38a169,#2f855a);border:none;border-radius:6px;color:#fff;font-size:12px;cursor:pointer;transition:all .2s;white-space:nowrap}.random-btn:hover{background:linear-gradient(135deg,#48bb78,#38a169)}.error-message{margin-top:8px;padding:6px 12px;background:#f565651a;border:1px solid #fc8181;border-radius:6px;color:#fc8181;font-size:12px}.current-operations{margin-top:8px;padding:6px 12px;background:#63b3ed1a;border:1px solid #4a5568;border-radius:6px;font-size:12px;display:flex;align-items:center;gap:8px;overflow-x:auto}.ops-label{color:#a0aec0;white-space:nowrap}.ops-content{color:#e2e8f0;white-space:nowrap}.code-panel{display:flex;flex-direction:column;background:#1a1a2e;border-radius:8px;border:1px solid #2d3748;overflow:hidden;height:100%}.code-panel.loading{display:flex;align-items:center;justify-content:center;color:#a0aec0}.code-header{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:#16213e;border-bottom:1px solid #2d3748}.language-tabs{display:flex;gap:4px}.lang-tab{padding:4px 12px;background:transparent;border:1px solid transparent;border-radius:4px;color:#a0aec0;font-size:12px;cursor:pointer;transition:all .2s}.lang-tab:hover{color:#e2e8f0;background:#2d3748}.lang-tab.active{color:#63b3ed;background:#2d3748;border-color:#63b3ed}.code-content{flex:1;overflow:auto;padding:8px 0;font-family:Fira Code,Monaco,Consolas,monospace;font-size:12px;line-height:1.6}.code-line{display:flex;padding:1px 12px;transition:background-color .2s}.code-line.highlighted{background:#63b3ed26;border-left:3px solid #63b3ed;padding-left:9px}.line-number{width:32px;color:#4a5568;text-align:right;padding-right:12px;-webkit-user-select:none;user-select:none;flex-shrink:0}.code-line.highlighted .line-number{color:#63b3ed}.line-content{flex:1;color:#e2e8f0;white-space:pre}.variable-display{color:#68d391;font-style:italic;margin-left:16px;opacity:.9}.keyword{color:#f687b3}.string{color:#68d391}.comment{color:#718096;font-style:italic}.number{color:#f6ad55}.function{color:#63b3ed}.trie-canvas{position:relative;width:100%;height:100%;background:linear-gradient(135deg,#0f0f1a,#1a1a2e);border-radius:8px;border:1px solid #2d3748;overflow:hidden}.canvas-controls{position:absolute;top:10px;right:10px;display:flex;align-items:center;gap:8px;z-index:10}.reset-view-btn{padding:4px 10px;background:#2d3748e6;border:1px solid #4a5568;border-radius:4px;color:#e2e8f0;font-size:12px;cursor:pointer;transition:all .2s}.reset-view-btn:hover{background:#4a5568e6;border-color:#63b3ed}.zoom-level{padding:4px 8px;background:#2d3748e6;border-radius:4px;color:#a0aec0;font-size:11px}.step-info{position:absolute;bottom:10px;left:10px;right:10px;padding:10px 14px;background:#1a1a2ef2;border:1px solid #4a5568;border-radius:8px;z-index:10}.step-description{color:#e2e8f0;font-size:13px;line-height:1.5}.trie-canvas svg circle{transition:fill .3s,stroke .3s,stroke-width .3s}.trie-canvas svg line{transition:stroke .3s,stroke-width .3s}.trie-canvas svg text{transition:fill .3s}.playback-controls{padding:12px 16px;background:linear-gradient(135deg,#1a1a2e,#16213e);border-top:1px solid #2d3748}.controls-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.control-buttons{display:flex;gap:8px}.control-btn{display:flex;align-items:center;gap:6px;padding:8px 14px;background:linear-gradient(135deg,#2d3748,#1a202c);border:1px solid #4a5568;border-radius:6px;color:#e2e8f0;font-size:14px;cursor:pointer;transition:all .2s}.control-btn:hover:not(:disabled){background:linear-gradient(135deg,#4a5568,#2d3748);border-color:#63b3ed}.control-btn:disabled{opacity:.5;cursor:not-allowed}.control-btn.play-btn{background:linear-gradient(135deg,#3182ce,#2b6cb0);border-color:#4299e1}.control-btn.play-btn:hover:not(:disabled){background:linear-gradient(135deg,#4299e1,#3182ce)}.shortcut{font-size:10px;color:#a0aec0;padding:2px 4px;background:#0000004d;border-radius:3px}.speed-control{position:relative}.speed-btn{padding:8px 14px;background:linear-gradient(135deg,#2d3748,#1a202c);border:1px solid #4a5568;border-radius:6px;color:#e2e8f0;font-size:13px;cursor:pointer;transition:all .2s}.speed-btn:hover{border-color:#63b3ed}.speed-menu{position:absolute;bottom:100%;left:50%;transform:translate(-50%);margin-bottom:8px;background:#2d3748;border:1px solid #4a5568;border-radius:6px;overflow:hidden;z-index:100}.speed-option{display:block;width:100%;padding:8px 20px;background:transparent;border:none;color:#e2e8f0;font-size:13px;cursor:pointer;transition:background .2s;text-align:center}.speed-option:hover{background:#4a5568}.speed-option.active{background:#3182ce;color:#fff}.step-counter{color:#a0aec0;font-size:13px}.progress-bar{position:relative;height:8px;background:#2d3748;border-radius:4px;cursor:pointer;overflow:visible}.progress-fill{height:100%;background:linear-gradient(90deg,#38a169,#48bb78);border-radius:4px;transition:width .1s ease-out}.progress-handle{position:absolute;top:50%;width:16px;height:16px;background:#48bb78;border:2px solid #fff;border-radius:50%;transform:translate(-50%,-50%);cursor:grab;transition:transform .1s;box-shadow:0 2px 4px #0000004d}.progress-handle:hover{transform:translate(-50%,-50%) scale(1.2)}.progress-bar:active .progress-handle{cursor:grabbing;transform:translate(-50%,-50%) scale(1.3)}.modal-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{background:linear-gradient(135deg,#1a1a2e,#16213e);border:1px solid #4a5568;border-radius:12px;width:90%;max-width:700px;max-height:80vh;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 20px 60px #00000080}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid #2d3748}.modal-header h2{margin:0;font-size:18px;color:#e2e8f0}.close-btn{width:32px;height:32px;background:transparent;border:1px solid #4a5568;border-radius:6px;color:#a0aec0;font-size:20px;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.close-btn:hover{background:#2d3748;border-color:#63b3ed;color:#e2e8f0}.modal-body{padding:20px;overflow-y:auto;color:#e2e8f0;line-height:1.7}.modal-body section{margin-bottom:20px}.modal-body section:last-child{margin-bottom:0}.modal-body h3{color:#63b3ed;font-size:15px;margin:0 0 10px;padding-bottom:6px;border-bottom:1px solid #2d3748}.modal-body p{margin:0 0 10px;font-size:14px;color:#cbd5e0}.modal-body ul,.modal-body ol{margin:0 0 10px;padding-left:20px}.modal-body li{margin-bottom:6px;font-size:14px;color:#cbd5e0}.modal-body strong{color:#68d391}.wechat-float{position:fixed;bottom:20px;right:20px;z-index:100}.float-button{display:flex;align-items:center;gap:6px;padding:10px 14px;background:linear-gradient(135deg,#07c160,#06ad56);border-radius:24px;color:#fff;cursor:pointer;box-shadow:0 4px 12px #07c16066;transition:all .3s}.float-button:hover{transform:translateY(-2px);box-shadow:0 6px 16px #07c16080}.wechat-icon{width:20px;height:20px}.float-text{font-size:13px;font-weight:500}.qr-popup{position:absolute;bottom:100%;right:0;margin-bottom:12px;animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.qr-content{background:#fff;border-radius:12px;padding:16px;box-shadow:0 8px 32px #0000004d}.qr-image{width:200px;height:auto;border-radius:8px;display:block}.qr-tip{margin:12px 0 0;font-size:12px;color:#666;text-align:center;max-width:200px;line-height:1.4}.app{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden;background:#0f0f1a}.main-content{flex:1;display:flex;gap:12px;padding:12px;min-height:0;overflow:hidden}.code-section{width:380px;flex-shrink:0;display:flex;flex-direction:column;min-height:0}.canvas-section{flex:1;min-width:0;display:flex;flex-direction:column}
