:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:dark;--color-bg-primary: #0f172a;--color-bg-secondary: #1e293b;--color-bg-tertiary: #334155;--color-text-primary: #f8fafc;--color-text-secondary: #94a3b8;--color-text-accent: #38bdf8;--color-border: #334155;--color-primary: #0ea5e9;--color-primary-hover: #0284c7;--color-success: #22c55e;--color-warning: #eab308;--color-error: #ef4444;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;background-color:var(--color-bg-primary);color:var(--color-text-primary)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}body{margin:0;min-width:320px;min-height:100vh;width:100%}#root{width:100%;max-width:800px;margin:0 auto;padding:2rem;text-align:center;box-sizing:border-box}@media(max-width:640px){#root{padding:1rem}}@keyframes spin{to{transform:rotate(360deg)}}.spinner{display:inline-block;width:1.25em;height:1.25em;border:2px solid var(--color-bg-tertiary);border-top-color:var(--color-primary);border-radius:50%;animation:spin .7s linear infinite;vertical-align:middle;flex-shrink:0}.loading-indicator{display:flex;align-items:center;justify-content:center;gap:.6rem;margin-top:2rem;color:var(--color-text-secondary);font-size:.95rem}button{border-radius:var(--radius-md);border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:var(--color-bg-tertiary);cursor:pointer;transition:border-color .25s,background-color .25s}button:hover{border-color:var(--color-primary);background-color:var(--color-bg-secondary)}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}h1{font-size:3.2em;line-height:1.1;background:linear-gradient(to right,#38bdf8,#818cf8);-webkit-background-clip:text;background-clip:text;color:transparent}.card{padding:2em;background-color:var(--color-bg-secondary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border:1px solid var(--color-border)}.drop-zone{border:2px dashed var(--color-primary);border-radius:var(--radius-lg);padding:4rem;transition:all .3s ease;background:#0ea5e90d;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.drop-zone.active{background:#0ea5e926;transform:scale(1.02)}#seo-content{width:100%;max-width:600px;margin:4rem auto 2rem;padding:0 1rem;text-align:left;box-sizing:border-box}.seo-container{display:flex;flex-direction:column;gap:3rem}.seo-section h2{font-size:1.5rem;color:var(--color-text-primary);border-bottom:2px solid var(--color-border);padding-bottom:.5rem;margin-top:0;margin-bottom:1.5rem;font-weight:700;background:linear-gradient(to right,#38bdf8,#818cf8);-webkit-background-clip:text;background-clip:text;color:transparent;display:inline-block}.seo-section p,.seo-section li,.seo-section dd{color:var(--color-text-secondary);line-height:1.7;font-size:.95rem}.seo-section ol,.seo-section ul{padding-left:1.25rem;margin-top:.5rem;margin-bottom:.5rem}.seo-section li{margin-bottom:1.25rem}.seo-section li strong,.seo-section dt{color:var(--color-text-primary)}.seo-subsection-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem;margin-top:1rem}.seo-card{padding:1.5rem;background-color:var(--color-bg-secondary);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--color-border);transition:transform .2s ease,border-color .2s ease}.seo-card:hover{transform:translateY(-2px);border-color:var(--color-primary)}.seo-card h3{font-size:1.1rem;color:var(--color-text-accent);margin-top:0;margin-bottom:.75rem;font-weight:600}.seo-card p{margin:0;font-size:.9rem}.seo-section code{background-color:var(--color-bg-tertiary);color:var(--color-text-accent);padding:.15rem .4rem;border-radius:var(--radius-sm);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.85em}.seo-section dl{margin:0}.seo-section dt{font-weight:600;font-size:1rem;margin-top:1.5rem;margin-bottom:.5rem;display:flex;align-items:flex-start}.seo-section dt:before{content:"Q.";color:var(--color-primary);margin-right:.5rem;font-weight:700}.seo-section dd{margin-left:0;padding-left:1.25rem;border-left:3px solid var(--color-primary);margin-bottom:1.75rem}@media(max-width:640px){#seo-content{margin-top:3rem}.seo-subsection-grid{grid-template-columns:1fr}}