:root{--primary:#2563eb;--primary-hover:#1d4ed8;--primary-light:#eff6ff;--text-primary:#111827;--text-secondary:#6b7280;--text-muted:#9ca3af;--background:#fff;--background-alt:#f9fafb;--border:#e5e7eb;--shadow-sm:0 1px 2px rgba(0,0,0,.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Pretendard,-apple-system,BlinkMacSystemFont,system-ui,sans-serif;color:var(--text-primary);background:var(--background);line-height:1.6}.header{position:fixed;top:0;left:0;right:0;height:64px;background:hsla(0,0%,100%,.9);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);z-index:100;display:flex;justify-content:space-between;align-items:center;padding:0 24px}.header-logo{font-size:20px;font-weight:700;color:var(--primary);text-decoration:none}.header-nav{display:flex;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:500;padding:10px 20px;border-radius:8px;border:none;cursor:pointer;transition:all .2s ease;text-decoration:none}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{background:transparent;color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--background-alt)}.btn-large{padding:14px 28px;font-size:16px}.hero{padding:160px 24px 100px;text-align:center;background:linear-gradient(180deg,var(--primary-light) 0,var(--background) 100%)}.hero-title{font-size:48px;font-weight:700;line-height:1.3;margin-bottom:24px;color:var(--text-primary);letter-spacing:-.02em}.hero-subtitle{font-size:18px;color:var(--text-secondary);max-width:560px;margin:0 auto 40px;line-height:1.7}.hero-cta{display:flex;gap:16px;justify-content:center}.problem{padding:100px 24px;background:var(--background-alt)}.problem-container{max-width:720px;margin:0 auto;text-align:center}.problem-title{font-size:32px;font-weight:600;margin-bottom:20px;letter-spacing:-.01em}.problem-text{font-size:17px;color:var(--text-secondary);line-height:1.8}.features{padding:100px 24px}.features-container{max-width:1100px;margin:0 auto}.features-title{font-size:32px;font-weight:600;text-align:center;margin-bottom:56px;letter-spacing:-.01em}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:24px;gap:24px}.feature-card{padding:36px 32px;background:var(--background);border:1px solid var(--border);border-radius:16px;transition:all .25s ease}.feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.feature-icon{width:52px;height:52px;background:var(--primary-light);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:24px;color:var(--primary)}.feature-title{font-size:20px;font-weight:600;margin-bottom:12px}.feature-desc{font-size:15px;color:var(--text-secondary);line-height:1.7}.cta{padding:100px 24px;background:var(--primary);text-align:center}.cta-title{font-size:32px;font-weight:600;color:#fff;margin-bottom:16px}.cta-text{font-size:17px;color:hsla(0,0%,100%,.85);margin-bottom:36px}.cta .btn-primary{background:#fff;color:var(--primary)}.cta .btn-primary:hover{background:var(--primary-light)}.footer{padding:48px 24px;background:var(--text-primary);text-align:center}.footer-text{font-size:14px;color:var(--text-muted)}.not-found{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px}.not-found-title{font-size:72px;font-weight:700;color:var(--primary);margin-bottom:16px}.not-found-text{font-size:18px;color:var(--text-secondary);margin-bottom:32px}@media (max-width:1024px){.features-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.hero{padding:120px 20px 80px}.hero-title{font-size:32px}.hero-subtitle{font-size:16px}.hero-cta{flex-direction:column;align-items:center}.hero-cta .btn{width:100%;max-width:280px}.cta,.features,.problem{padding:80px 20px}.cta-title,.features-title,.problem-title{font-size:26px}.features-grid{grid-template-columns:1fr}.header-nav .btn-secondary{display:none}}