:root{--primary-color: #3b82f6;--primary-hover: #2563eb;--text-primary: #1f2937;--text-secondary: #6b7280;--text-tertiary: #9ca3af;--bg-primary: #ffffff;--bg-secondary: #f3f4f6;--bg-tertiary: #e5e7eb;--border-color: #e5e7eb;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--radius-sm: 6px;--radius-md: 12px;--radius-lg: 16px;--transition: all .3s ease}*,*:before,*:after{box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:1rem;line-height:1.6;color:var(--text-primary);background-color:var(--bg-primary);min-height:100vh}#root{min-height:100vh}a{color:var(--primary-color);text-decoration:none;transition:var(--transition)}a:hover{color:var(--primary-hover)}button{font-family:inherit;cursor:pointer;border:none;outline:none;transition:var(--transition)}input,textarea,select{font-family:inherit;font-size:inherit;outline:none}img,video{max-width:100%;height:auto}h1,h2,h3,h4,h5,h6{margin:0;font-weight:600;line-height:1.3}ul,ol{margin:0;padding:0;list-style:none}table{border-collapse:collapse;width:100%}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--text-tertiary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-1{gap:.25rem}.gap-2{gap:.5rem}.gap-4{gap:1rem}.w-full{width:100%}.h-full{height:100%}.hidden{display:none}.block{display:block}@media(max-width:768px){html{font-size:14px}}.tool-card{display:flex;align-items:center;gap:16px;padding:20px;background:#fff;border-radius:12px;text-decoration:none;color:inherit;box-shadow:0 2px 8px #0000000f;transition:all .3s ease;border:2px solid transparent}.tool-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0000001a;border-color:var(--primary-color)}.tool-card__icon{font-size:40px;width:60px;height:60px;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border-radius:12px}.tool-card__info{flex:1}.tool-card__name{margin:0 0 6px;font-size:18px;font-weight:600;color:var(--text-primary)}.tool-card__description{margin:0 0 10px;font-size:14px;color:var(--text-secondary);line-height:1.5}.tool-card__category{display:inline-block;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:500}.tool-card__arrow{font-size:24px;color:var(--text-tertiary);transition:transform .3s ease}.tool-card:hover .tool-card__arrow{transform:translate(4px);color:var(--primary-color)}.toolbox{max-width:1000px;margin:0 auto;padding:40px 20px}.toolbox__header{text-align:center;margin-bottom:40px}.toolbox__header h1{font-size:36px;font-weight:700;color:var(--text-primary);margin:0 0 10px}.toolbox__header p{font-size:16px;color:var(--text-secondary);margin:0}.toolbox__categories{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:40px;padding:20px;background:var(--bg-secondary);border-radius:16px}.category-btn{padding:10px 18px;border:2px solid transparent;border-radius:25px;background:#fff;font-size:14px;font-weight:500;cursor:pointer;transition:all .3s ease;color:var(--text-secondary)}.category-btn:hover{border-color:var(--category-color, var(--primary-color));color:var(--category-color, var(--primary-color))}.category-btn.active{background:var(--category-color, var(--primary-color));color:#fff;border-color:var(--category-color, var(--primary-color))}.toolbox__section{margin-bottom:40px}.toolbox__section-title{font-size:20px;font-weight:600;margin:0 0 20px;padding-bottom:10px;border-bottom:2px solid var(--bg-secondary)}.toolbox__list{display:grid;grid-template-columns:repeat(auto-fill,minmax(450px,1fr));gap:16px}.toolbox__list>div{cursor:pointer}.toolbox__empty{text-align:center;padding:60px 20px;color:var(--text-secondary)}.empty-icon{font-size:64px;display:block;margin-bottom:20px}.toolbox__empty h3{margin:0 0 10px;font-size:24px;color:var(--text-primary)}.toolbox__empty p{margin:0;font-size:16px}@media(max-width:768px){.toolbox__list{grid-template-columns:1fr}.toolbox__categories{padding:15px}.category-btn{padding:8px 14px;font-size:13px}}.tool-page{max-width:1200px;margin:0 auto;padding:20px}.tool-page__back{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border:none;border-radius:8px;background:var(--bg-secondary);color:var(--text-secondary);font-size:14px;font-weight:500;cursor:pointer;transition:all .3s ease;margin-bottom:30px}.tool-page__back:hover{background:var(--primary-color);color:#fff}.tool-page__header{display:flex;align-items:center;gap:20px;padding:30px;background:var(--bg-secondary);border-radius:16px;margin-bottom:30px}.tool-page__icon{font-size:48px;width:80px;height:80px;display:flex;align-items:center;justify-content:center;background:#fff;border-radius:16px;box-shadow:0 4px 12px #00000014}.tool-page__info h1{margin:0 0 8px;font-size:28px;font-weight:700;color:var(--text-primary)}.tool-page__info p{margin:0;font-size:16px;color:var(--text-secondary)}.tool-page__content{background:#fff;border-radius:16px;padding:30px;box-shadow:0 2px 12px #0000000f}.tool-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;color:var(--text-secondary)}.tool-loading__spinner{width:40px;height:40px;border:3px solid var(--bg-secondary);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:16px}@keyframes spin{to{transform:rotate(360deg)}}.tool-page__not-found{text-align:center;padding:60px 20px}.tool-page__not-found h2{margin:0 0 20px;color:var(--text-primary)}.tool-page__not-found button{padding:12px 24px;border:none;border-radius:8px;background:var(--primary-color);color:#fff;font-size:16px;cursor:pointer}@media(max-width:768px){.tool-page__header{flex-direction:column;text-align:center}.tool-page__info h1{font-size:24px}}