* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f7f1df;
    color: #2c2c2c;
    line-height: 1.6;
}

header {
    background: linear-gradient(
        135deg,
        #49b7ae,
        #5ecf7f
    );
    color: white;
    text-align: center;
    padding: 80px 20px;
}

nav {
    background: #2b6777;
    padding: 15px;
    text-align: center;
    position: sticky;
    top: 0;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 40px 20px;
}

.hero {
    height: 450px;
    background:
        linear-gradient(rgba(0,0,0,.4), rgba(0,0,0,.4)),
        url('../images/hero-4l.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.overlay {
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 20px;
}

.overlay h2 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.card {
    background: white;
    border-radius: 20px;
    margin-top: 40px;
    box-shadow: 0 5px 20px rgba(0,0,0,.1);
}

.card h2 {
    color: #2b6777;
    margin-bottom: 20px;
}

.placeholder-image {
    height: 300px;
    border: 3px dashed #49b7ae;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px 0;
    border-radius: 12px;
    color: #49b7ae;
    font-weight: bold;
}

.btn {
    display: inline-block;
    margin-top: 20px;
    text-decoration: none;
    background: #f28c28;
    color: white;
    padding: 15px 25px;
    border-radius: 10px;
    font-weight: bold;
}

.btn:hover {
    background: #dd7415;
}

footer {
    margin-top: 50px;
    padding: 30px;
    text-align: center;
    background: #2b6777;
    color: white;
}