* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, sans-serif;
}

body {
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    color: white;
    scroll-behavior: smooth;
}

header {
    height: 50vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
}

header h1 {
    font-size: 3.2rem;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

section {
    padding: 80px 10%;
    background: #f5f5f5;
    color: #333;
}

section:nth-child(even) {
    background: #e9ecef;
}

section h2 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    color: #203a43;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.card ul {
    margin-top: 10px;
    list-style-type: disc;
    padding-left: 20px;
}

.warning {
    color: red;
    font-style: italic;
}

footer {
    text-align: center;
    padding: 20px;
    background: #203a43;
    color: white;
}