body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    color: #333;
    line-height: 1.6;
    background-color: #f4f7f6;
}

* {
    transition: all 0.3s ease-in-out;
}

header {
    background: #fff;
    padding: 1rem 5%;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    margin: 0;
    color: #0056b3;
}

.nav-links {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: bold;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #0056b3;
}

.download-btn {
    background: #007bff;
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background 0.3s;
}

.download-btn:hover {
    background: #0056b3;
}

#hero {
    background: linear-gradient(45deg, #007bff, #0056b3);
    color: #fff;
    text-align: center;
    padding: 100px 20px;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.download-btn-large {
    background: #007bff;
    color: #fff;
    padding: 1rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: bold;
    transition: background 0.3s;
}

.download-btn-large:hover {
    background: #0056b3;
}

main section {
    padding: 4rem 5%;
}

#features, #contact {
    text-align: center;
}

h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #0056b3;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    text-align: left;
}

.feature-item {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0,0,0,0.15);
}

.feature-item h3 {
    color: #0056b3;
    margin-top: 0;
}

#contact ul {
    list-style: none;
    padding: 0;
}

#contact .contact-info p {
    font-size: 1.2rem;
    margin: 0.5rem 0;
}

#contact .contact-info a {
    color: #007bff;
    text-decoration: none;
}

#contact .contact-info a:hover {
    text-decoration: underline;
}

footer {
    background: #0056b3;
    color: #fff;
    text-align: center;
    padding: 2rem 0;
}