:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#213547;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-width:320px;min-height:100vh}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: dark){:root{color:#ffffffde;background-color:#242424}button{background-color:#f9f9f9}}.sidebar{position:fixed;left:0;top:0;height:100vh;background:#fff;box-shadow:0 0 20px #00000014;transition:all .3s cubic-bezier(.4,0,.2,1);z-index:1000;width:72px;overflow:hidden}.sidebar.expanded{width:240px}.sidebar-content{display:flex;flex-direction:column;height:100%;padding:20px 0}.profile-section{padding:0 16px 20px;display:flex;align-items:center;gap:16px;border-bottom:1px solid #f0f0f0}.avatar{width:40px;height:40px;border-radius:12px;overflow:hidden;flex-shrink:0;cursor:pointer;transition:transform .3s ease}.avatar:hover{transform:scale(1.05)}.avatar-placeholder{width:100%;height:100%;background:linear-gradient(135deg,#646cff,#535bf2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:500}.profile-info{opacity:0;transition:opacity .2s ease}.expanded .profile-info{opacity:1}.profile-info h3{margin:0;font-size:16px;font-weight:600;color:#1a1a1a;white-space:nowrap}.nav-section{flex:1;overflow-y:auto;padding:12px;-ms-overflow-style:none;scrollbar-width:none}.nav-section::-webkit-scrollbar{display:none}.nav-group{margin-bottom:20px}.nav-section a{display:flex;align-items:center;gap:12px;padding:10px 12px;text-decoration:none;color:#4c4c4c;border-radius:8px;transition:all .2s ease;white-space:nowrap}.nav-section a:hover{background:#f5f5f5;color:#646cff}.nav-section a.active{background:#646cff15;color:#646cff;font-weight:500}.nav-icon{width:24px;height:24px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}.nav-label{font-size:14px;opacity:0;transition:opacity .2s ease}.expanded .nav-label{opacity:1}.categories-group{display:flex;flex-direction:column;gap:4px}.category-section{display:flex;flex-direction:column}.category-header{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;cursor:pointer;border-radius:8px;transition:all .2s ease}.category-header:hover{background:#f5f5f5}.category-title{display:flex;align-items:center;gap:12px}.expand-icon{font-size:12px;color:#666;opacity:0;transition:opacity .2s ease}.expanded .expand-icon{opacity:1}.category-tools{display:none;flex-direction:column;padding-left:48px;margin-top:4px}.category-tools.expanded{display:flex}.category-tools a{padding:6px 12px;font-size:13px;color:#666}.category-tools a:hover{background:#f5f5f5;color:#646cff}.category-tools a.active{background:#646cff15;color:#646cff}.tool-label{opacity:0;transition:opacity .2s ease}.expanded .tool-label{opacity:1}.sidebar:not(.expanded) .category-tools.expanded{padding-left:0}.sidebar:not(.expanded) .category-tools.expanded a{padding:6px 0;justify-content:center}.sidebar-footer{margin-top:auto;padding:1rem;border-top:1px solid rgba(255,255,255,.1)}.sidebar-footer a{display:flex;align-items:center;padding:.75rem;color:#fff;text-decoration:none;border-radius:6px;transition:background-color .2s}.sidebar-footer a:hover{background-color:#ffffff1a}<CONTENT_TO_EDIT>.layout{display:flex;min-height:100vh;background:#f8f9fa}.main-container{flex:1;margin-left:72px;transition:margin-left .3s ease;display:flex;flex-direction:column}.sidebar.expanded+.main-container{margin-left:240px}.main-content{flex:1;display:flex;flex-direction:column}.main-content.tool-page{padding:0;overflow:hidden}.main-header{background:#fff;box-shadow:0 2px 8px #0000001a;position:sticky;top:0;z-index:100}.header-content{display:flex;justify-content:space-between;align-items:center;width:100%;max-width:1200px;margin:0 auto;padding:1rem 2rem}.header-btn{padding:.5rem 1rem;border-radius:6px;border:none;background-color:#4a90e2;color:#fff;cursor:pointer;font-size:.9rem;transition:background-color .2s}.header-btn:hover{background-color:#357abd}.logo{text-decoration:none}.logo h1{font-size:1.5rem;margin:0;background:linear-gradient(45deg,#646cff,#535bf2);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.main-content.tool-page iframe{flex:1;height:calc(100vh - 124px)}.main-footer{background:#fff;padding:1rem 0}.footer-content{max-width:1200px;margin:0 auto;padding:0 2rem;text-align:center;color:#666}@media (max-width: 768px){.header-content{padding:1rem}}</CONTENT_TO_EDIT>.home-page{max-width:100%;padding:2rem 4rem}.hero{text-align:center;padding:4rem 2rem;background:linear-gradient(135deg,#646cff15,#535bf215);border-radius:24px;margin-bottom:3rem;box-shadow:0 4px 20px #0000000d;max-width:1400px;margin-left:auto;margin-right:auto}.hero h1{font-size:3rem;color:#2a2a2a;margin-bottom:1rem;background:linear-gradient(45deg,#646cff,#535bf2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;animation:fadeIn .8s ease-out}.hero p{color:#666;font-size:1.4rem;margin-bottom:2.5rem;animation:fadeIn 1s ease-out}.hero-actions{margin:1rem 0;display:flex;justify-content:center;gap:1rem}.message-btn,.login-btn{padding:.75rem 1.5rem;border-radius:8px;font-size:1rem;cursor:pointer;border:none;transition:background-color .2s}.message-btn{background-color:#4caf50;color:#fff}.login-btn{background-color:#2196f3;color:#fff}.message-btn:hover,.login-btn:hover{opacity:.9}.search-bar{max-width:800px;margin:0 auto;width:100%}.search-bar input{width:100%;padding:1rem 1.5rem;border:2px solid rgba(100,108,255,.1);border-radius:12px;font-size:1.1rem;transition:all .3s ease;background:#fff;box-shadow:0 4px 12px #0000000d}.tools-section{padding:2rem;max-width:1800px;margin:0 auto;background:#f8f9fa;border-radius:24px}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2.5rem;margin:0 auto;padding:1rem;max-width:100%}@media (max-width: 1400px){.tools-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}}@media (max-width: 1100px){.tools-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}}@media (max-width: 768px){.tools-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem}}@media (max-width: 480px){.tools-grid{grid-template-columns:1fr}}.categories-filter{display:flex;justify-content:center;flex-wrap:wrap;gap:1rem;margin:2rem auto 3rem;padding:.8rem;border-radius:16px;background:#f8f9fa;max-width:1200px}.category-btn{flex:0 1 auto;min-width:120px;display:flex;align-items:center;gap:.5rem;padding:.8rem 1.2rem;border:none;background:transparent;color:#666;cursor:pointer;font-size:1rem;border-radius:10px;transition:all .3s ease}.tool-card{position:relative;background:#fff;border-radius:20px;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);border:1px solid rgba(0,0,0,.08);box-shadow:0 4px 6px #00000005,0 1px 3px #0000000d;display:flex;flex-direction:column;gap:1.5rem;height:100%;min-height:220px;overflow:hidden;isolation:isolate;padding:15px}.tool-card:before{content:"";position:absolute;top:0;left:0;right:0;height:6px;background:linear-gradient(90deg,#646cff,#535bf2);opacity:0;transition:opacity .3s ease}.tool-card:hover{transform:translateY(-4px);box-shadow:0 12px 24px #0000000d,0 4px 8px #0000000d;border-color:#646cff33}.tool-card:hover:before{opacity:1}.tool-icon{display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,#646cff14,#535bf214);font-size:1.8rem;color:#646cff;margin-bottom:.5rem;transition:all .3s ease}.tool-card:hover .tool-icon{transform:scale(1.05);background:linear-gradient(135deg,#646cff1f,#535bf21f)}.tool-content{flex:1}.tool-content h3{font-size:1.4rem;font-weight:600;color:#2a2a2a;margin:0 0 .8rem;line-height:1.3}.tool-content p{color:#666;font-size:1rem;line-height:1.6;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.tool-footer{margin-top:auto;padding-top:1.2rem;border-top:1px solid rgba(0,0,0,.06);display:flex;justify-content:space-between;align-items:center}.tool-category{font-size:.9rem;color:#646cff;background:#646cff14;padding:.4rem 1rem;border-radius:20px;transition:all .3s ease}.tool-card:hover .tool-category{background:#646cff1f}.tool-tags{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.8rem}.tool-tag{font-size:.8rem;color:#666;background:#0000000a;padding:.2rem .8rem;border-radius:12px;transition:all .3s ease}.tool-card:hover .tool-tag{background:#0000000f}.tool-meta{font-size:.85rem;color:#999;display:flex;align-items:center;gap:.5rem}.messages-container{min-height:100%;background-color:#f5f7fa;padding:2rem}.messages-content{max-width:900px;margin:0 auto}.messages-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:2rem;padding:1rem;background:#fff;border-radius:12px;box-shadow:0 2px 4px #0000000d}.header-title h1{margin:0;color:#2c3e50;font-size:1.8rem}.subtitle{margin:.5rem 0 0;color:#7f8c8d;font-size:.95rem}.header-actions{display:flex;gap:1rem}.logout-button{padding:.6rem 1.2rem;background-color:#e74c3c;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:.9rem;transition:all .2s ease}.logout-button:hover{background-color:#c0392b;transform:translateY(-1px)}.publish-section{margin-bottom:2rem}.message-form{background:#fff;border-radius:12px;padding:1.5rem;box-shadow:0 2px 4px #0000000d}.form-header{margin-bottom:1rem}.form-header h2{margin:0;color:#2c3e50;font-size:1.4rem}.form-tip{color:#7f8c8d;font-size:.9rem}.form-content{display:flex;flex-direction:column;gap:1rem}.form-content textarea{width:100%;padding:1rem;border:1px solid #e0e0e0;border-radius:8px;resize:vertical;min-height:120px;font-family:inherit;font-size:.95rem;transition:border-color .2s ease}.form-content textarea:focus{outline:none;border-color:#3498db}.publish-button{align-self:flex-end;padding:.75rem 1.5rem;background-color:#2ecc71;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:.95rem;transition:all .2s ease}.publish-button:hover{background-color:#27ae60;transform:translateY(-1px)}.messages-section{background:#fff;border-radius:12px;padding:1.5rem;box-shadow:0 2px 4px #0000000d}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:1px solid #ecf0f1}.section-header h2{margin:0;color:#2c3e50;font-size:1.4rem}.message-count{color:#7f8c8d;font-size:.9rem}.messages-list{display:flex;flex-direction:column;gap:1rem}.message-card{padding:1.5rem;border-radius:8px;background:#f8f9fa;transition:all .2s ease}.message-card:hover{transform:translateY(-2px);box-shadow:0 4px 6px #0000000d}.message-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}.message-date{color:#95a5a6;font-size:.9rem}.message-icon{font-size:1.2rem}.message-content{color:#2c3e50;line-height:1.6;font-size:.95rem;white-space:pre-wrap}@media (max-width: 768px){.messages-container{padding:1rem}.messages-header{flex-direction:column;gap:1rem}.header-actions,.logout-button{width:100%}.publish-button{width:100%;align-self:center}}<CONTENT_TO_EDIT>.tool-page-container{position:fixed;top:0;left:0;width:100%;height:100vh;z-index:1000;background:#fff;display:flex;flex-direction:column}.tool-layout{display:flex;min-height:100vh}.tool-page{flex:1;height:calc(100vh - 64px);overflow:hidden;background:#fff}.tool-container{flex:1;margin-left:72px;transition:margin-left .3s ease}.tool-iframe{width:100%;height:100%;border:none;overflow:auto}.tool-frame{width:100%;height:100%;border:none}.sidebar.expanded+.tool-container{margin-left:240px}</CONTENT_TO_EDIT> .login-page{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#f5f7fa,#c3cfe2);padding:1rem;position:fixed;top:0;left:0;right:0;bottom:0}.login-container{display:flex;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%}.login-content{width:100%;max-width:400px;background:#fff;border-radius:16px;box-shadow:0 10px 25px #0000001a;padding:2rem;margin:auto}.login-header{text-align:center;margin-bottom:2rem}.login-logo{font-size:3rem;margin-bottom:1rem;animation:float 3s ease-in-out infinite}.login-header h1{margin:0;color:#2c3e50;font-size:1.8rem;font-weight:600}.login-subtitle{margin:.5rem 0 0;color:#7f8c8d;font-size:.95rem}.login-form{display:flex;flex-direction:column;gap:1.5rem}.error-message{background:#fff5f5;color:#c53030;padding:.75rem 1rem;border-radius:8px;font-size:.9rem;display:flex;align-items:center;gap:.5rem;animation:fadeIn .3s ease-in-out}.error-icon{font-size:1.1rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{color:#4a5568;font-size:.95rem;font-weight:500;display:flex;align-items:center;gap:.5rem}.input-icon{font-size:1.1rem}.form-group input{width:80%;padding:.75rem 1rem;border:2px solid #e2e8f0;border-radius:8px;font-size:1rem;transition:all .2s ease}.form-group input:focus{outline:none;border-color:#4299e1;box-shadow:0 0 0 3px #4299e11a}.login-button{background:#4299e1;color:#fff;padding:.875rem;border:none;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s ease;margin-top:.5rem}.login-button:hover{background:#3182ce;transform:translateY(-1px)}.login-button:active{transform:translateY(0)}.login-tips{margin-top:1rem;padding:1rem;background:#f7fafc;border-radius:8px;text-align:center}.login-tips p{margin:.25rem 0;color:#718096;font-size:.9rem}.back-button{width:100%;margin-top:1.5rem;padding:.75rem;background:transparent;border:2px solid #e2e8f0;border-radius:8px;color:#4a5568;font-size:.95rem;cursor:pointer;transition:all .2s ease}.back-button:hover{background:#f7fafc;border-color:#cbd5e0}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-10px)}to{transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.shake{animation:shake .5s ease-in-out}@media (max-width: 480px){.login-content{padding:1.5rem}.login-header h1{font-size:1.5rem}.login-logo{font-size:2.5rem}}
