*{margin:0;padding:0;box-sizing:border-box;}body{font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;background-color:#f9fafb;color:#111827;min-height:100vh;display:flex;flex-direction:column;}nav{background-color:#ffffff;box-shadow:0 1px 3px 0 rgba(0, 0, 0, 0.1);}.nav-container{max-width:1280px;margin:0 auto;padding:0 1rem;}.nav-content{display:flex;justify-content:space-between;height:4rem;}.nav-brand{display:flex;align-items:center;}.nav-brand a{font-size:1.25rem;font-weight:600;color:#1f2937;text-decoration:none;}.nav-links{display:flex;align-items:center;gap:1rem;}.nav-links a{color:#4b5563;text-decoration:none;padding:0.5rem 0.75rem;font-size:0.875rem;font-weight:500;transition:color 0.2s;}.nav-links a:hover{color:#111827;}main{flex:1;max-width:1280px;margin:0 auto;padding:3rem 1rem;width:100%;}.hero{text-align:center;}.hero p{font-size:1.125rem;color:#374151;}.tools-grid{margin-top:4rem;display:grid;grid-template-columns:1fr;gap:1.5rem;}.tool-card{background-color:#ffffff;border-radius:0.5rem;box-shadow:0 1px 2px 0 rgba(0, 0, 0, 0.05);padding:1.5rem;transition:box-shadow 0.2s;}.tool-card:hover{box-shadow:0 4px 6px -1px rgba(0, 0, 0, 0.1);}.tool-card h3{font-size:1.125rem;font-weight:600;color:#111827;margin-bottom:0.5rem;}.tool-card p{color:#4b5563;font-size:0.875rem;margin-bottom:1rem;}.tool-card a{color:#2563eb;text-decoration:none;font-size:0.875rem;font-weight:500;}.tool-card a:hover{color:#1e40af;}footer{background-color:#ffffff;border-top:1px solid #e5e7eb;margin-top:5rem;}.footer-container{max-width:1280px;margin:0 auto;padding:1.5rem 1rem;}.footer-container p{text-align:center;color:#6b7280;font-size:0.875rem;}@media (min-width:640px){.nav-container{padding:0 1.5rem;}main{padding:5rem 1.5rem;}.hero p{font-size:1.25rem;}.tools-grid{grid-template-columns:repeat(2, 1fr);margin-top:5rem;}.footer-container{padding:1.5rem 1.5rem;}}@media (min-width:1024px){.nav-container{padding:0 2rem;}main{padding:5rem 2rem;}.tools-grid{grid-template-columns:repeat(3, 1fr);}.footer-container{padding:1.5rem 2rem;}}