body{font-family:Arial,sans-serif;background:#f8f9fa}header{text-align:center;padding:2rem 1rem;background:#fff;margin-bottom:1rem}header h1{font-size:2rem;font-weight:700}header h2{font-size:1.2rem;color:#555}.card{border-radius:1rem;box-shadow:0 2px 8px rgba(0,0,0,.1)}.result-box{font-size:1.1rem;color:#0d6efd;min-height:2rem}footer{margin-top:2rem;padding:1rem;text-align:center;background:#fff;font-size:.9rem;color:#555}.social-buttons a{margin:0 .3rem;text-decoration:none}aside{margin:1rem 0}