body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0;
    background-color: #f0f2f5;
}

header {
    background: #2c3e50;
    color: #fff;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo a {
    color: #fff;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

nav {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

nav a {
    color: #ecf0f1;
    text-decoration: none;
    font-weight: 500;
}

nav a:hover {
    color: #3498db;
}

.banner {
    width: 100%;
    min-height: 200px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    text-align: center;
    padding: 20px;
    box-sizing: border-box;
}

main {
    background: #fff;
    padding: 30px;
    margin: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

h1, h2, h3 {
    color: #2c3e50;
}

img {
    max-width: 100%;
    height: auto;
}

.faq-item {
    margin-bottom: 30px;
}

.faq-item strong {
    display: block;
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #2980b9;
}

.download-box {
    background: #ecf0f1;
    padding: 20px;
    border-radius: 8px;
    border-left: 5px solid #3498db;
    margin-top: 20px;
    word-wrap: break-word;
}

footer {
    text-align: center;
    padding: 40px 20px;
    color: #7f8c8d;
    background: #2c3e50;
    margin-top: 40px;
}

footer p { margin: 10px 0; }

footer a {
    color: #bdc3c7;
    text-decoration: none;
    margin: 0 10px;
}

@media (max-width: 600px) {
    header {
        flex-direction: column;
        padding: 15px;
    }
    nav {
        margin-top: 15px;
        justify-content: center;
    }
    main {
        margin: 10px;
        padding: 20px;
    }
    .banner {
        min-height: 150px;
    }
    h1 { font-size: 1.5rem; }
}