*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial,sans-serif;
}

body{
    background:#f5f5f5;
    color:#333;
}

.topbar{
    background:#bcbcbc;
    color:#4a7a9d;
    text-align:center;
    padding:15px;
    font-size:20px;
}

.logo-area{
    text-align:center;
    padding:30px;
    background:#fff;
}

.logo-area img{
    max-width:320px;
}

.hero{
    height:90vh;
    background:url('img/hero.jpg') center/cover no-repeat;
    position:relative;
    display:flex;
    align-items:center;
    justify-content:center;
}

.overlay{
    position:absolute;
    width:100%;
    height:100%;
    background:rgba(0,0,0,0.45);
}

.hero-content{
    position:relative;
    text-align:center;
    color:white;
    max-width:800px;
    padding:20px;
}

.hero-content h1{
    font-size:52px;
    margin-bottom:20px;
}

.hero-content p{
    font-size:22px;
    margin-bottom:30px;
}

.btn{
    background:#4a7a9d;
    color:white;
    padding:15px 35px;
    text-decoration:none;
    border-radius:40px;
}

section{
    padding:80px 10%;
}

h2{
    text-align:center;
    margin-bottom:40px;
    color:#4a7a9d;
}

.cards{
    display:flex;
    gap:20px;
    flex-wrap:wrap;
    justify-content:center;
}

.card{
    background:white;
    padding:25px;
    border-radius:12px;
    box-shadow:0 5px 20px rgba(0,0,0,.08);
}

.aligners .container{
    display:flex;
    align-items:center;
    gap:40px;
}

.aligners img{
    width:100%;
    max-width:500px;
    border-radius:20px;
}

.contact iframe{
    width:100%;
    height:400px;
    border:none;
    margin-top:20px;
}

.whatsapp-float{
    position:fixed;
    bottom:30px;
    right:30px;
    background:#25d366;
    color:white;
    padding:18px 25px;
    border-radius:50px;
    text-decoration:none;
    z-index:999;
}

@media(max-width:768px){
    .hero-content h1{
        font-size:34px;
    }

    .aligners .container{
        flex-direction:column;
    }
}