body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: #f5f7fb;
    color: #1f2937;
}

header {
    background: white;
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid #e5e7eb;
}

header a {
    text-decoration: none;
    color: #374151;
    margin-left: 20px;
}

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

.hero {
    padding: 60px 20px;
    text-align: center;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.btn {
    background: #2563eb;
    color: white;
    padding: 12px 20px;
    border-radius: 6px;
    text-decoration: none;
}

footer {
    background: #111827;
    color: #9ca3af;
    text-align: center;
    padding: 20px;
}