:root{--color-primary: #0066ff;--color-primary-dark: #0052cc;--color-primary-light: #4d94ff;--color-accent: #00d4ff;--color-bg-light: #ffffff;--color-bg-off: #f4f8ff;--color-bg-dark: #0f172a;--color-text-main: #1e293b;--color-text-muted: #64748b;--color-text-invert: #ffffff;--container-width: 1200px;--header-height: 80px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 16px;--ease-spring: cubic-bezier(.175, .885, .32, 1.275)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:NanumSquareNeo,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--color-text-main);background-color:var(--color-bg-light);line-height:1.6;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit;transition:color .2s}button{cursor:pointer;border:none;font-family:inherit}.container{max-width:var(--container-width);margin:0 auto;padding:0 2rem}.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem}.performance-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2rem;max-width:1200px;margin:0 auto}.security-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;max-width:1200px;margin:0 auto}.platforms-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1.5rem;max-width:1200px;margin:0 auto;margin-bottom:4rem}.hero-container{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;max-width:1400px;margin:0 auto}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:3rem;margin-bottom:3rem}@media (max-width: 1024px){.features-grid{grid-template-columns:repeat(2,1fr)}.platforms-grid{grid-template-columns:repeat(3,1fr)}.pricing-grid{grid-template-columns:repeat(2,1fr)}header nav{display:none!important}.hero-container{grid-template-columns:1fr;text-align:center;gap:2rem}.hero-content{order:1}.hero-visual{order:2;max-width:600px;margin:0 auto}.hero-buttons{justify-content:center}}@media (max-width: 768px){.features-grid,.performance-grid,.security-grid{grid-template-columns:1fr}.platforms-grid{grid-template-columns:repeat(2,1fr)}.pricing-grid{grid-template-columns:1fr!important}h1{font-size:2.5rem!important}.support-center-image{width:90%!important}}@media (max-width: 480px){.platforms-grid{grid-template-columns:1fr}.container{padding:0 1.5rem}.btn{width:100%;justify-content:center}.hero-buttons{flex-direction:column}}.flex-center{display:flex;align-items:center;justify-content:center}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.8rem 2rem;border-radius:50px;font-weight:600;font-size:1rem;transition:transform .1s,box-shadow .2s,background-color .2s}.btn:active{transform:scale(.98)}.btn-primary{background-color:var(--color-primary);color:var(--color-text-invert);box-shadow:0 4px 14px #0066ff4d}.btn-primary:hover{background-color:var(--color-primary-dark)}.btn-outline{border:2px solid var(--color-primary);color:var(--color-primary);background:transparent}.btn-outline:hover{background:var(--color-bg-off)}