:root{--bg-color:#f8fafc;--surface-color:#ffffff;--text-primary:#0f172a;--text-secondary:#64748b;--primary-color:#4f46e5;--primary-hover:#4338ca;--secondary-color:#10b981;--border-color:#e2e8f0;--card-shadow:0 4px 6px -1px rgba(0,0,0,0.05),0 2px 4px -2px rgba(0,0,0,0.05);--card-shadow-hover:0 20px 25px -5px rgba(0,0,0,0.1),0 8px 10px -6px rgba(0,0,0,0.1);--header-bg:rgba(255,255,255,0.8);--footer-bg:#1e293b;--footer-text:#f8fafc;--ad-bg:#f1f5f9;--error-color:#ef4444;--success-color:#10b981;}[data-theme="dark"]{--bg-color:#0f172a;--surface-color:#1e293b;--text-primary:#f8fafc;--text-secondary:#94a3b8;--primary-color:#6366f1;--primary-hover:#818cf8;--secondary-color:#34d399;--border-color:#334155;--card-shadow:0 4px 6px -1px rgba(0,0,0,0.2),0 2px 4px -2px rgba(0,0,0,0.2);--card-shadow-hover:0 20px 25px -5px rgba(0,0,0,0.4),0 8px 10px -6px rgba(0,0,0,0.4);--header-bg:rgba(30,41,59,0.8);--footer-bg:#0b1120;--footer-text:#f8fafc;--ad-bg:#1e293b;}*{margin:0;padding:0;box-sizing:border-box;}body{font-family:'Inter',system-ui,-apple-system,sans-serif;background-color:var(--bg-color);color:var(--text-primary);line-height:1.6;transition:background-color 0.3s ease,color 0.3s ease;display:flex;flex-direction:column;min-height:100vh;}a{text-decoration:none;color:var(--primary-color);transition:color 0.2s ease;}a:hover{color:var(--primary-hover);}ul{list-style:none;}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 1.5rem;}header{position:sticky;top:0;z-index:50;background-color:var(--header-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);transition:background-color 0.3s ease,border-color 0.3s ease;}.header-container{display:flex;justify-content:space-between;align-items:center;height:4rem;}.logo{font-size:1.5rem;font-weight:800;color:var(--primary-color);display:flex;align-items:center;gap:0.5rem;}.logo svg{width:2rem;height:2rem;fill:currentColor;}.nav-links{display:flex;gap:2rem;align-items:center;}.nav-links a{color:var(--text-primary);font-weight:500;font-size:0.95rem;}.nav-links a:hover{color:var(--primary-color);}.theme-toggle{background:none;border:none;color:var(--text-primary);cursor:pointer;padding:0.5rem;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background-color 0.2s;}.theme-toggle:hover{background-color:var(--border-color);}.mobile-menu-btn{display:none;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer;}.hero{text-align:center;padding:5rem 0 3rem;background:linear-gradient(to bottom,rgba(79,70,229,0.05),transparent);}.hero h1{font-size:3rem;font-weight:800;margin-bottom:1rem;line-height:1.2;}.hero p{font-size:1.25rem;color:var(--text-secondary);max-width:600px;margin:0 auto 2rem;}main{flex:1;padding:2rem 0;}.category-section{margin-bottom:4rem;}.category-title{font-size:1.5rem;font-weight:700;margin-bottom:1.5rem;color:var(--text-primary);display:flex;align-items:center;gap:0.5rem;}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;}.tool-card{background-color:var(--surface-color);border:1px solid var(--border-color);border-radius:1rem;padding:1.5rem;transition:transform 0.3s ease,box-shadow 0.3s ease,border-color 0.3s ease;display:flex;flex-direction:column;gap:1rem;text-decoration:none;color:inherit;}.tool-card:hover{transform:translateY(-4px);box-shadow:var(--card-shadow-hover);border-color:var(--primary-color);}.tool-icon{width:3rem;height:3rem;background-color:rgba(79,70,229,0.1);color:var(--primary-color);border-radius:0.75rem;display:flex;align-items:center;justify-content:center;font-size:1.5rem;transition:background-color 0.3s ease;}.tool-card:hover .tool-icon{background-color:var(--primary-color);color:white;}.tool-title{font-size:1.125rem;font-weight:600;color:var(--text-primary);}.tool-desc{font-size:0.875rem;color:var(--text-secondary);flex:1;}.tool-wrapper{max-width:800px;margin:0 auto;}.tool-header{text-align:center;margin-bottom:2rem;}.tool-header h1{font-size:2.5rem;font-weight:800;margin-bottom:0.5rem;}.tool-header p{color:var(--text-secondary);font-size:1.1rem;}.workspace{background-color:var(--surface-color);border-radius:1rem;border:1px solid var(--border-color);box-shadow:var(--card-shadow);padding:2rem;margin-bottom:3rem;}.dropzone{border:2px dashed var(--border-color);border-radius:0.75rem;padding:3rem 2rem;text-align:center;cursor:pointer;transition:all 0.3s ease;background-color:var(--bg-color);}.dropzone.dragover{border-color:var(--primary-color);background-color:rgba(79,70,229,0.05);}.dropzone-icon{font-size:3rem;color:var(--primary-color);margin-bottom:1rem;}.dropzone-text{font-size:1.25rem;font-weight:600;color:var(--text-primary);margin-bottom:0.5rem;}.dropzone-subtext{color:var(--text-secondary);font-size:0.875rem;}.file-input{display:none;}.btn{display:inline-flex;align-items:center;justify-content:center;gap:0.5rem;padding:0.75rem 1.5rem;font-size:1rem;font-weight:600;border-radius:0.5rem;border:none;cursor:pointer;transition:all 0.2s ease;}.btn-primary{background-color:var(--primary-color);color:white;}.btn-primary:hover{background-color:var(--primary-hover);color:white;}.btn-secondary{background-color:var(--border-color);color:var(--text-primary);}.btn-secondary:hover{background-color:var(--text-secondary);color:white;}.seo-content{background-color:var(--surface-color);border-radius:1rem;border:1px solid var(--border-color);padding:2.5rem;margin-top:3rem;}.seo-content h2,.seo-content h3{margin-top:2rem;margin-bottom:1rem;color:var(--text-primary);}.seo-content h2:first-child{margin-top:0;}.seo-content p{color:var(--text-secondary);margin-bottom:1rem;line-height:1.7;}.seo-content ul,.seo-content ol{color:var(--text-secondary);margin-left:1.5rem;margin-bottom:1.5rem;}.seo-content li{margin-bottom:0.5rem;}.faq-item{border-bottom:1px solid var(--border-color);padding:1rem 0;}.faq-question{font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--text-primary);}.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.3s ease;color:var(--text-secondary);margin-top:0;}.faq-item.active .faq-answer{max-height:500px;margin-top:1rem;}.faq-item.active .faq-icon{transform:rotate(180deg);}.faq-icon{transition:transform 0.3s ease;}.ad-slot{background-color:var(--ad-bg);border:1px solid var(--border-color);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;text-align:center;padding:1rem;margin:2rem 0;font-size:0.875rem;border-radius:0.5rem;}.ad-leaderboard{width:100%;height:90px;}.ad-rectangle{width:300px;height:250px;margin:2rem auto;}.features-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin:3rem 0;}.feature-item{text-align:center;}.feature-icon{font-size:2rem;color:var(--primary-color);margin-bottom:1rem;}.feature-title{font-size:1.125rem;font-weight:600;margin-bottom:0.5rem;}.feature-desc{color:var(--text-secondary);font-size:0.9rem;}footer{background-color:var(--footer-bg);color:var(--footer-text);padding:4rem 0 2rem;margin-top:auto;}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:3rem;margin-bottom:3rem;}.footer-col h3{font-size:1.125rem;font-weight:600;margin-bottom:1.5rem;color:white;}.footer-links{display:flex;flex-direction:column;gap:0.75rem;}.footer-links a{color:var(--text-secondary);transition:color 0.2s;}.footer-links a:hover{color:white;}.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:2rem;display:flex;flex-direction:column;align-items:center;gap:1rem;text-align:center;color:var(--text-secondary);font-size:0.875rem;}.social-links{display:flex;gap:1rem;}.social-links a{color:var(--text-secondary);font-size:1.25rem;}.social-links a:hover{color:white;}.file-preview{display:none;border-radius:0.75rem;border:1px solid var(--border-color);padding:1rem;margin-top:1.5rem;background-color:var(--bg-color);}.file-item{display:flex;justify-content:space-between;align-items:center;padding:0.5rem;background:var(--surface-color);border:1px solid var(--border-color);border-radius:0.5rem;margin-bottom:0.5rem;}.file-info{display:flex;align-items:center;gap:1rem;}.file-name{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px;}.file-size{color:var(--text-secondary);font-size:0.8rem;}.remove-file{background:none;border:none;color:var(--error-color);cursor:pointer;padding:0.25rem;}.action-row{margin-top:1.5rem;display:flex;justify-content:center;gap:1rem;}.status-indicator{display:none;text-align:center;margin-top:1.5rem;}.spinner{width:2rem;height:2rem;border:3px solid rgba(79,70,229,0.2);border-radius:50%;border-top-color:var(--primary-color);animation:spin 1s linear infinite;margin:0 auto 1rem;}@keyframes spin{100%{transform:rotate(360deg);}}@media (max-width:768px){.nav-links{display:none;position:absolute;top:4rem;left:0;right:0;background-color:var(--surface-color);flex-direction:column;padding:1rem 0;border-bottom:1px solid var(--border-color);box-shadow:0 4px 6px -1px rgba(0,0,0,0.1);}.nav-links.active{display:flex;}.mobile-menu-btn{display:block;}.hero h1{font-size:2rem;}}.workspace-controls{margin-top:1.5rem;display:flex;flex-direction:column;gap:1rem;}.control-group{display:flex;flex-direction:column;gap:0.5rem;}.control-label{font-size:0.875rem;font-weight:600;color:var(--text-primary);}.control-input{padding:0.75rem;border:1px solid var(--border-color);border-radius:0.5rem;background-color:var(--bg-color);color:var(--text-primary);font-family:inherit;font-size:1rem;transition:border-color 0.2s;}.control-input:focus{outline:none;border-color:var(--primary-color);}