body {
    font-family: 'Nunito', sans-serif;
    background-color: #e6f0ff;
    margin: 0;
    color: #333;
}

a {
    color: #3a9ff1;
    text-decoration: none;
    transition: color 0.2s, text-decoration 0.2s;
}

a:hover {
    color: #007bbd;
    text-decoration: underline;
}

/* Hero Section */
header {
    background-color: #64b7ff;
    color: white;
    text-align: center;
    padding: 60px 20px;
    border-bottom-left-radius: 25px;
    border-bottom-right-radius: 25px;
}

header img {
    width: 20%;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 15px;
}

header p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.hero-buttons button {
    font-weight: bold;
    padding: 12px 28px;
    border-radius: 25px;
    border: 2px solid white;
    background-color: white;
    color: #3a9ff1;
    transition: 0.2s;
}

.hero-buttons button:hover {
    background-color: #e0f4ff;
}

/* Features Section */
.features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 25px;
    padding: 50px 20px;
}

.feature-card {
    background-color: #f9fcff;
    border: 2px solid #cce0ff;
    border-radius: 25px;
    width: 250px;
    padding: 25px 20px;
    text-align: center;
    position: relative;
    transition: transform 0.2s, background-color 0.2s;
}

.feature-card::after {
    content: "";
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 15px 15px 0 15px;
    border-style: solid;
    border-color: #f9fcff transparent transparent transparent;
    display: block;
    width: 0;
}

.feature-card:hover {
    transform: translateY(-6px);
    background-color: #e6f4ff;
}

.feature-card h3 {
    color: #3a9ff1;
    margin-bottom: 12px;
    font-size: 1.3rem;
}

.feature-card p {
    font-size: 0.95rem;
}

/* Promo Section*/
.promo-box {
    background-color: #3a9ff1;
    color: white;
    text-align: center;
    padding: 50px 20px;
    border-radius: 25px;
    margin: 40px 20px;
}

.promo-box h2 {
    font-size: 2rem;
    margin-bottom: 15px;
}

.promo-box p {
    font-size: 1rem;
    margin-bottom: 20px;
}

.promo-box button {
    font-weight: bold;
    padding: 12px 28px;
    border-radius: 25px;
    border: none;
    background-color: white;
    color: #64b7ff;
    transition: 0.2s;
}

.promo-box button:hover {
    background-color: #e0f4ff;
}

/* Footer */
footer {
    text-align: center;
    padding: 25px 10px;
    font-size: 0.9rem;
    color: #555;
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 2.2rem;
    }

    header img {
        width: 50%;
    }

    .features {
        flex-direction: column;
        align-items: center;
    }
}