:root{--primary:#0f172a;--accent:#2563eb;--accent-hover:#1d4ed8;--success:#059669;--bg-main:#ffffff;--bg-soft:#f8fafc;--text-main:#1e293b;--text-muted:#64748b;--border:#e2e8f0;--shadow:0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.06)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:inter,system-ui,-apple-system,sans-serif;color:var(--text-main);background-color:var(--bg-main);line-height:1.6;-webkit-font-smoothing:antialiased}.container{max-width:900px;margin:0 auto;padding:0 1.5rem}header.site-header{border-bottom:1px solid var(--border);padding:1.5rem 0;margin-bottom:3rem}.logo{font-size:1.5rem;font-weight:800;letter-spacing:-.05em;color:var(--primary);text-decoration:none;display:flex;align-items:center;gap:8px}.logo::before{content:'Δ';color:var(--accent)}.tool-card{background:var(--bg-main);border:1px solid var(--border);border-radius:16px;padding:2rem;box-shadow:var(--shadow);margin-bottom:2rem}.input-group{margin-bottom:1.5rem}label{display:block;font-size:.875rem;font-weight:600;color:var(--text-muted);margin-bottom:.5rem}input,select{width:100%;padding:.75rem;border:1px solid var(--border);border-radius:8px;font-size:1rem;font-family:jetbrains mono,monospace;transition:border-color .2s}input:focus{outline:none;border-color:var(--accent);ring:2px var(--accent)}button{background-color:var(--accent);color:#fff;padding:.75rem 1.5rem;border:none;border-radius:8px;font-weight:600;cursor:pointer;transition:background .2s}button:hover{background-color:var(--accent-hover)}.result-display{background:var(--bg-soft);border-radius:12px;padding:1.5rem;margin-top:1.5rem}.result-display h4{font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:1rem;border-bottom:1px solid var(--border);padding-bottom:.5rem}.comparison-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem}.ad-slot{display:flex;justify-content:center;align-items:center;background-color:var(--bg-soft);border:1px dashed var(--border);margin:2rem 0;min-height:250px}.hero-section{margin-bottom:4rem;text-align:center}.hero-title{font-size:3rem;font-weight:800;margin-bottom:1rem;color:var(--primary);line-height:1.1}.hero-subtitle{color:var(--text-muted);font-size:1.25rem}.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem}.tool-link{text-decoration:none;color:inherit}.card-hover{transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;height:100%}.card-hover:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:0 10px 15px -3px rgba(0,0,0,.1)}.tool-icon{color:var(--accent);margin-bottom:1rem}.tool-title{color:var(--accent);margin-bottom:.5rem}.tool-description{font-size:.9rem;color:var(--text-muted)}@media(max-width:640px){.container{padding:0 1.25rem !important}.hero-title{font-size:2.2rem;line-height:1.2;margin-bottom:.75rem}.hero-subtitle{font-size:1.1rem}.comparison-grid{grid-template-columns:1fr;gap:1rem}.home-seo-text{margin-top:3rem !important;padding-top:2rem !important}.result-display p{font-size:.9rem;word-break:break-all}}@media(prefers-color-scheme:dark){:root{--bg-main:#020617;--bg-soft:#0f172a;--text-main:#f1f5f9;--text-muted:#94a3b8;--border:#1e293b;--primary:#f1f5f9}.tool-card{background:#0f172a}}header.site-header .container{display:flex;flex-direction:column;align-items:center;text-align:center}.logo{justify-content:center;width:100%}