:root{--primary-color: #2563eb;--primary-hover: #1d4ed8;--bg-color: #f8fafc;--surface-color: #ffffff;--text-color: #334155;--text-light: #64748b;--border-color: #e2e8f0;--danger-color: #ef4444;--spacing-unit: 1rem;--container-width: 900px;--radius: 8px;--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-color);color:var(--text-color);line-height:1.6}a{text-decoration:none;color:inherit}ul{list-style:none}.container{max-width:var(--container-width);margin:0 auto;padding:0 var(--spacing-unit)}.navbar{background-color:var(--surface-color);border-bottom:1px solid var(--border-color);padding:1rem 0;position:sticky;top:0;z-index:100}.navbar .container{display:flex;justify-content:space-between;align-items:center}.logo{font-weight:800;font-size:1.5rem;color:var(--text-color)}.logo span{color:var(--primary-color)}.nav-links{display:flex;gap:1.5rem}.nav-links a{font-weight:500;color:var(--text-light);transition:color .2s}.nav-links a:hover,.nav-links a.active{color:var(--primary-color)}.tool-section{padding:3rem 0;background-color:var(--surface-color);border-bottom:1px solid var(--border-color)}.tool-header{text-align:center;margin-bottom:2rem}.tool-header h1{font-size:2.5rem;margin-bottom:.5rem;color:#0f172a}.tool-interface{background:var(--surface-color);border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.toolbar{padding:.75rem;background-color:#f1f5f9;border-bottom:1px solid var(--border-color);display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}.toolbar button{padding:.4rem .8rem;border:1px solid var(--border-color);background:#fff;border-radius:4px;cursor:pointer;font-size:.875rem;font-weight:500;color:var(--text-color);transition:all .2s}.toolbar button:hover{background-color:#e2e8f0}.toolbar .btn-primary{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color)}.toolbar .btn-primary:hover{background-color:var(--primary-hover)}.toolbar .btn-danger{color:var(--danger-color);border-color:#fca5a5}.toolbar .btn-danger:hover{background-color:#fef2f2}.spacer{flex-grow:1}textarea{width:100%;height:300px;border:none;padding:1.5rem;font-size:1.1rem;font-family:inherit;resize:vertical;outline:none;display:block}.stats-bar{display:flex;justify-content:space-around;padding:1rem;background-color:#f8fafc;border-top:1px solid var(--border-color);flex-wrap:wrap;gap:1rem}.stat-item{display:flex;flex-direction:column;align-items:center}.stat-value{font-weight:700;font-size:1.25rem;color:var(--primary-color)}.stat-label{font-size:.75rem;color:var(--text-light);text-transform:uppercase;letter-spacing:.05em}.content-section{padding:3rem 0}.seo-content{max-width:700px;margin:0 auto}.seo-content h2,.seo-content h3,.seo-content h4{color:#0f172a;margin-top:2rem;margin-bottom:1rem}.seo-content p,.seo-content ul{margin-bottom:1.5rem;color:var(--text-color)}.seo-content ul{padding-left:1.5rem;list-style-type:disc}.seo-content li{margin-bottom:.5rem}.ad-placeholder{width:100%;height:100px;background-color:#e2e8f0;display:flex;justify-content:center;align-items:center;color:#94a3b8;font-size:.875rem;margin:2rem 0;border-radius:var(--radius);border:1px dashed #cbd5e1}footer{background-color:var(--surface-color);border-top:1px solid var(--border-color);padding:2rem 0;margin-top:auto;text-align:center}.footer-links{margin-bottom:1rem}.footer-links a{margin:0 .75rem;color:var(--text-light);font-size:.875rem}.footer-links a:hover{text-decoration:underline}footer p{color:#94a3b8;font-size:.875rem}@media(max-width:640px){.tool-header h1{font-size:2rem}.toolbar{justify-content:space-between}.spacer{display:none}.toolbar button{flex:1 1 45%;text-align:center}.stats-bar{display:grid;grid-template-columns:repeat(3,1fr)}}