:root {
    --primary: #003366;
    /* Deep Blue */
    --secondary: #CC0000;
    /* Vibrant Red */
    --accent: #0055AA;
    --text: #333333;
    --bg: #F5F7FA;
    --white: #FFFFFF;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.hero {
    text-align: center;
    margin-bottom: 4rem;
}

.hero h1 {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.hero h1::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--secondary);
}

.hero p {
    font-size: 1.25rem;
    color: #666;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    width: 100%;
}

.card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 51, 102, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 4px solid var(--primary);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 51, 102, 0.15);
}

.card:last-child {
    border-top-color: var(--secondary);
}

.card-illustration {
    width: 100%;
    height: 180px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.ai-illustration {
    background: linear-gradient(135deg, var(--primary), #0055AA);
}

.management-illustration {
    background: linear-gradient(135deg, var(--secondary), #880000);
}

.icon {
    font-size: 4rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.2);
    user-select: none;
}

.ai-illustration::before {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 4s infinite ease-in-out;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.3;
    }

    50% {
        transform: scale(1.2);
        opacity: 0.6;
    }
}

.card-content {
    padding: 2rem;
}

.card-content h2 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card:last-child .card-content h2 {
    color: var(--secondary);
}

.card-content p {
    color: #555;
    font-size: 1rem;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.25rem;
    }

    .container {
        padding: 1.5rem;
    }
}