body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f7fa;
    color: #222;
    line-height: 1.6;
}
header {
    background: linear-gradient(135deg, #0a2740, #0f4c75);
    color: white;
    padding: 40px 20px;
    text-align: center;
}
header h1 {
    font-size: 2.6em;
    margin-bottom: 10px;
}
header p {
    font-size: 1.25em;
}
.btn {
    display: inline-block;
    margin: 15px 10px;
    padding: 12px 22px;
    background: #00a8e8;
    color: #fff;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
}
.btn:hover {
    background: #0077b6;
}
section {
    max-width: 1000px;
    margin: auto;
    padding: 35px 20px;
}
.center {
    text-align: center;
}
h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #0a2740;
}
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}
.card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}
table th, table td {
    text-align: left;
    padding: 10px;
    border-bottom: 1px solid #ddd;
}
footer {
    background: #0a2740;
    padding: 20px;
    color: white;
    text-align: center;
    margin-top: 40px;
}