:root{--primary-color: #2c3e50;--secondary-color: #3498db;--accent-color: #e74c3c;--bg-color: #f8f9fa;--card-bg: #ffffff;--text-primary: #2d3436;--text-secondary: #636e72;--border-radius: 12px;--shadow: 0 4px 6px rgba(0, 0, 0, .05), 0 1px 3px rgba(0, 0, 0, .1);--transition: all .3s ease}*{margin:0;padding:0;box-sizing:border-box;font-family:Pretendard,-apple-system,BlinkMacSystemFont,system-ui,Roboto,Helvetica Neue,Segoe UI,Apple SD Gothic Neo,Noto Sans KR,Malgun Gothic,sans-serif}body{background-color:var(--bg-color);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}.container{max-width:1200px;margin:0 auto;padding:2rem 1rem}header{text-align:center;margin-bottom:3rem}header h1{font-size:2.5rem;color:var(--primary-color);margin-bottom:.5rem}header p{color:var(--text-secondary);font-size:1.1rem}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1.5rem;grid-auto-rows:1fr}.tool-card{background:var(--card-bg);padding:2rem 1.5rem;border-radius:var(--border-radius);box-shadow:var(--shadow);text-decoration:none;color:inherit;display:flex;flex-direction:column;align-items:center;text-align:center;transition:var(--transition);border:1px solid rgba(0,0,0,.05);height:100%}.tool-card:hover{transform:translateY(-5px);box-shadow:0 10px 20px #0000001a;border-color:var(--secondary-color)}.tool-icon{width:60px;height:60px;background-color:#ebf5fb;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:1.25rem;color:var(--secondary-color)}.tool-card h2{font-size:1.25rem;margin-bottom:.75rem;color:var(--primary-color)}.tool-card p{font-size:.95rem;color:var(--text-secondary)}footer{margin-top:5rem;padding-top:2rem;border-top:1px solid #ddd;text-align:center;color:var(--text-secondary);font-size:.9rem}.footer-links{margin-bottom:1rem}.footer-links a{color:var(--text-secondary);text-decoration:none;margin:0 .5rem}.footer-links a:hover{text-decoration:underline}@media (max-width: 768px){header h1{font-size:2rem}.tool-grid{grid-template-columns:1fr}}