body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
}

header {
    background: url('https://via.placeholder.com/1500x500') no-repeat center center/cover;
    color: white;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

nav {
    background: rgba(0, 0, 0, 0.7);
    padding: 10px 0;
}

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

nav .logo {
    font-size: 1.5em;
    color: white;
    text-decoration: none;
}

nav .nav-links {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav .nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

.hero {
    text-align: center;
    padding: 20px;
}

.hero h1 {
    font-size: 3em;
    margin-bottom: 10px;
}

.hero p {
    font-size: 1.2em;
}

.btn {
    padding: 10px 20px;
    background: #fabe00;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background 0.3s ease;
}

.btn:hover {
    background: #ae0d12;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 20px;
}

.features, .reviews, .purchase {
    text-align: center;
    padding: 40px 0;
}

.feature-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.feature-item {
    max-width: 300px;
    text-align: center;
}

.feature-item img {
    width: 100%;
    border-radius: 10px;
}

.review-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}

.review-item {
    max-width: 700px;
    background: #f4f4f4;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

footer {
    text-align: center;
    padding: 10px 0;
    background: #0d0106;
    color: white;
}