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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: #2c3e50;
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 3em;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.tagline {
    font-size: 1.2em;
    font-weight: 300;
    opacity: 0.95;
}

.hero {
    background-color: white;
    padding: 60px 0;
    text-align: center;
    border-bottom: 1px solid #e9ecef;
}

.hero h2 {
    font-size: 2.5em;
    color: #1e3c72;
    margin-bottom: 20px;
}

.lead {
    font-size: 1.3em;
    color: #6c757d;
    max-width: 800px;
    margin: 0 auto;
}

.features {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.feature-card h3 {
    font-size: 1.5em;
    color: #1e3c72;
    margin-bottom: 15px;
}

.feature-card p {
    color: #6c757d;
    font-size: 1.05em;
}

.content {
    background-color: white;
    padding: 80px 0;
}

article {
    max-width: 900px;
    margin: 0 auto;
}

article h2 {
    font-size: 2.2em;
    color: #1e3c72;
    margin: 50px 0 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid #2a5298;
}

article h2:first-child {
    margin-top: 0;
}

article h3 {
    font-size: 1.6em;
    color: #2a5298;
    margin: 35px 0 20px;
}

article p {
    margin-bottom: 20px;
    font-size: 1.05em;
    text-align: justify;
}

article strong {
    color: #1e3c72;
    font-weight: 600;
}

footer {
    background-color: #1e3c72;
    color: white;
    text-align: center;
    padding: 30px 0;
    margin-top: 60px;
}

footer p {
    font-size: 1em;
    opacity: 0.9;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }

    .tagline {
        font-size: 1em;
    }

    .hero h2 {
        font-size: 1.8em;
    }

    .lead {
        font-size: 1.1em;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    article h2 {
        font-size: 1.8em;
    }

    article h3 {
        font-size: 1.4em;
    }

    article p {
        text-align: left;
    }
}

@media (max-width: 480px) {
    header {
        padding: 40px 0;
    }

    header h1 {
        font-size: 1.6em;
    }

    .hero {
        padding: 40px 0;
    }

    .features {
        padding: 50px 0;
    }

    .content {
        padding: 50px 0;
    }
}