:root{--bg:#fff;--bg-light:#f9f9f9;--bg-header:#f4f4f4;--bg-hover:#e9e9e9;--bg-active:#d9d9d9;--text:#333;--text-light:#616161;--text-dark:#222;--text-heading:#424242;--primary:#017cff;--primary-hover:#0060f0;--primary-dark:#0050d0;--border:#ddd;--shadow:rgba(0,0,0,.1);--shadow-dark:rgba(0,0,0,.5);--logo-shadow:rgba(0,0,0,0.5);--toggle-shadow:rgba(102,126,234,.3);--gradient-primary:linear-gradient(135deg,#667eea,#764ba2);--gradient-accent:linear-gradient(135deg,#f093fb,#f5576c);--toggle-bg:linear-gradient(135deg,#667eea,#764ba2);--sidebar-bg:linear-gradient(180deg,#1a1c2e,#2d3154);--sidebar-border:rgba(255,255,255,.1);--sidebar-hover:rgba(255,255,255,.1);--sidebar-accent:#667eea;--modal-bg:linear-gradient(145deg,#fff,#f8f9fa);--modal-text:#4a5568;--modal-close-bg:linear-gradient(135deg,#f5f7fa,#e4e8eb);--modal-close-color:#64748b}[data-theme="dark"]{--bg:#222831;--bg-light:#2d3748;--bg-header:#222831;--bg-hover:#00ADB5;--bg-active:#009DAE;--text:#E0E0E0;--text-light:#BBB;--text-dark:#EEE;--text-heading:#00ADB5;--primary:#00ADB5;--primary-hover:#009DAE;--primary-dark:#008b8b;--border:#00ADB5;--shadow:rgba(0,0,0,.3);--toggle-shadow:rgba(0,173,181,.3);--logo-shadow:rgba(0,255,255,0.5);--gradient-primary:linear-gradient(135deg,#00ADB5,#00d4ff);--gradient-accent:linear-gradient(135deg,#00d4ff,#00ADB5);--toggle-bg:linear-gradient(135deg,#00ADB5,#00d4ff);--sidebar-bg:linear-gradient(180deg,#1a1c2e,#0f1117);--sidebar-border:rgba(0,173,181,.2);--sidebar-hover:rgba(0,173,181,.15);--sidebar-accent:#00ADB5;--modal-bg:linear-gradient(145deg,#2d3748,#1a202c);--modal-text:#a0aec0;--modal-close-bg:linear-gradient(135deg,#374151,#1f2937);--modal-close-color:#9ca3af}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;transition:all 0.3s ease;line-height:1.6}header{background:var(--bg-header);border-bottom:1px solid var(--border);padding:1rem 2rem;position:sticky;top:0;z-index:100;backdrop-filter:blur(10px)}.header-container{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:1.5rem}.header-container img{border-radius:50%;box-shadow:-8px 5px 10px var(--logo-shadow);cursor:pointer;transition:transform 0.3s ease,box-shadow 0.3s ease}.header-container img:active{transform:scale(0.98)}.header-content{flex:1;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.header-content h1{color:var(--text-heading);font-size:1.75rem;font-weight:700;display:flex;align-items:center;gap:0.5rem}.header-content h1::before{content:'\f002';font-family:'Font Awesome 7 Free';font-weight:900;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-buttons{display:flex;gap:0.75rem;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:0.5rem;padding:0.625rem 1.25rem;border-radius:8px;font-size:0.9rem;font-weight:500;text-decoration:none;cursor:pointer;border:none;transition:transform 0.2s ease,box-shadow 0.2s ease,background 0.2s ease}.btn-primary,.theme-switch{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 15px var(--toggle-shadow)}.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px var(--toggle-shadow)}.btn-secondary{background:var(--bg-light);color:var(--text);border:1px solid var(--border)}.btn-secondary:active{background:var(--bg-active)}.theme-switch{background:var(--toggle-bg)}.theme-switch::before{content:'\f186';font-family:'Font Awesome 7 Free';font-weight:900}[data-theme="dark"] .theme-switch::before{content:'\f185'}.author-qq-button::before{content:'\f015';font-family:'Font Awesome 7 Free';font-weight:900}main{max-width:800px;margin:2rem auto;padding:0 1.5rem}.tool-card{background:var(--bg-light);border-radius:16px;padding:2rem;box-shadow:0 10px 40px var(--shadow);border:1px solid var(--border);animation:fadeInUp 0.5s ease}.card-header{text-align:center;margin-bottom:2rem}.card-header h2{color:var(--text-heading);font-size:1.5rem;margin-bottom:0.5rem;display:flex;align-items:center;justify-content:center;gap:0.5rem}.card-header h2 i,.quick-action-btn i{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.card-header p{color:var(--text-light);font-size:0.95rem}.form-group{margin-bottom:1.5rem}.form-label{display:flex;align-items:center;gap:0.5rem;margin-bottom:0.5rem;font-weight:500;color:var(--text-dark)}.form-label i,.feature-tag i{color:var(--primary)}.qq-select,.qq-input,.select2-container--default .select2-selection--single,.select2-search--dropdown .select2-search__field{width:100%;padding:0.875rem 1rem;border:2px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);font-size:1rem;transition:border-color 0.3s ease,box-shadow 0.3s ease}.qq-select:focus,.qq-input:focus,.select2-container--default.select2-container--open .select2-selection--single,.select2-search--dropdown .select2-search__field:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--toggle-shadow)}.select2-option-icon{width:18px;margin-right:10px;color:var(--primary);text-align:center}.select2-optgroup-label{display:flex;align-items:center;font-weight:600}.select2-optgroup-label i{width:18px;margin-right:10px;color:var(--primary)}.select2-container--default .select2-results__group{padding:10px 12px;font-weight:600;color:var(--text-heading);background:var(--bg-header);border-bottom:1px solid var(--border);display:flex;align-items:center}.qq-select{cursor:pointer;appearance:none}.qq-input{padding-left:3rem}.qq-input::placeholder{color:var(--text-light)}.input-wrapper{position:relative}.input-wrapper i{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--primary);font-size:1.1rem}.select2-container--default .select2-selection--single{height:auto;padding:0.75rem 1rem}.select2-container--default .select2-selection--single .select2-selection__rendered{color:var(--text);line-height:1.5;padding-left:0}.select2-container--default .select2-selection--single .select2-selection__arrow{height:100%;right:10px}.select2-container--default .select2-selection--single .select2-selection__arrow b{border-color:var(--text-light) transparent transparent transparent}.select2-dropdown{background:var(--bg-light);border:2px solid var(--border);border-radius:10px;box-shadow:0 10px 40px var(--shadow);overflow:hidden}.select2-container--default .select2-results__option{padding:0.75rem 1rem;color:var(--text);transition:all 0.2s ease}.select2-container--default .select2-results__option--highlighted[aria-selected]{background:var(--gradient-primary);color:#fff}.select2-container--default .select2-results__option[aria-selected=true]{background:var(--bg-light)}.select2-search--dropdown .select2-search__field{padding:0.75rem 1rem;border-radius:8px}.qq-button{display:flex;align-items:center;justify-content:center;gap:0.75rem;width:100%;padding:1rem 2rem;margin-top:1.5rem;background:var(--gradient-primary);color:#fff;border:none;border-radius:12px;font-size:1.1rem;font-weight:600;cursor:pointer;text-decoration:none;transition:transform 0.2s ease,box-shadow 0.2s ease;box-shadow:0 6px 20px var(--toggle-shadow)}.qq-button i{font-size:1rem}.qq-button:active{transform:translateY(0);box-shadow:0 3px 10px var(--toggle-shadow)}.feature-tags{display:flex;flex-wrap:wrap;gap:0.5rem;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border)}.feature-tag{display:inline-flex;align-items:center;gap:0.375rem;padding:0.375rem 0.75rem;background:var(--bg-light);color:var(--text-light);border-radius:20px;font-size:0.8rem;border:1px solid var(--border)}.quick-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem;margin-top:2rem}.quick-action-btn{display:flex;flex-direction:column;align-items:center;gap:0.5rem;padding:1rem;background:var(--bg-light);border:1px solid var(--border);border-radius:12px;color:var(--text);text-decoration:none;cursor:pointer;transition:all 0.2s ease}.quick-action-btn i{font-size:1.5rem}.quick-action-btn span{font-size:0.85rem;font-weight:500}.quick-action-btn:active{background:var(--bg-active);transform:scale(0.98)}footer{text-align:center;padding:2rem;color:var(--text-light);font-size:0.9rem}footer a{color:var(--primary);text-decoration:none}footer i{color:#e74c3c;animation:heartbeat 1.5s ease-in-out infinite}[data-tooltip]{position:relative}[data-tooltip]::after{content:attr(data-tooltip);position:absolute;bottom:100%;left:50%;transform:translateX(-50%);padding:0.5rem 0.75rem;background:var(--bg-header);color:var(--text);font-size:0.8rem;border-radius:6px;white-space:nowrap;opacity:0;visibility:hidden;transition:all 0.2s ease;box-shadow:0 4px 15px var(--shadow);border:1px solid var(--border);z-index:1000}@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes heartbeat{0%,100%{transform:scale(1)}50%{transform:scale(1.2)}}@media (hover:hover){.header-container img:hover{transform:scale(1.05);box-shadow:0 6px 20px var(--shadow-dark)}.btn-primary:hover,.qq-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px var(--toggle-shadow)}.qq-button:hover{transform:translateY(-3px);box-shadow:0 10px 30px var(--toggle-shadow)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--primary)}.quick-action-btn:hover{background:var(--bg-hover);border-color:var(--primary);transform:translateY(-2px);box-shadow:0 4px 15px var(--shadow)}[data-tooltip]:hover::after{opacity:1;visibility:visible;bottom:calc(100% + 8px)}}@media (max-width:600px){.header-container{flex-direction:column;text-align:center}.header-content{justify-content:center}.header-content h1{font-size:1.4rem}.tool-card{padding:1.5rem}.quick-actions{grid-template-columns:repeat(2,1fr)}}