* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background: #f3f5f7;
    color: #222;
}

/* Header */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #ffffff;
    padding: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,.08);
}

.logo {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #00a651;
}

.search {
    width: 100%;
    padding: 12px 16px;
    border: none;
    outline: none;
    border-radius: 30px;
    background: #eef1f4;
}

/* Banner */
.banner {
    margin: 12px;
    border-radius: 20px;
    padding: 30px 20px;
    background: linear-gradient(135deg,#00a651,#2196f3);
    color: white;
}

.banner h2 {
    font-size: 24px;
}

.banner p {
    margin-top: 8px;
    opacity: .9;
}

/* Apps */
.container {
    padding: 12px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 12px;
}

.card {
    background: white;
    border-radius: 18px;
    padding: 12px;
    text-align: center;
    transition: .2s;
    box-shadow: 0 2px 8px rgba(0,0,0,.08);
}

.card:hover {
    transform: translateY(-3px);
}

.card img {
    width: 70px;
    height: 70px;
    border-radius: 18px;
    object-fit: cover;
}

.title {
    margin-top: 10px;
    font-size: 15px;
    font-weight: bold;
}

.dev {
    margin-top: 4px;
    font-size: 13px;
    color: #777;
}

.rating {
    margin-top: 6px;
    font-size: 13px;
    color: #ff9800;
}

/* Install Button */
.install {
    display: block;
    margin-top: 10px;
    width: 100%;
    text-align: center;
    text-decoration: none;
    background: #00a651;
    color: white;
    padding: 10px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.2s;
}

.install:hover {
    opacity: 0.9;
}

/* Desktop */
@media(min-width: 900px) {
    .grid {
        grid-template-columns: repeat(4, 1fr);
    }
    header {
        display: flex;
        gap: 20px;
        align-items: center;
    }
    .logo {
        margin-bottom: 0;
        min-width: 220px;
    }
}

footer {
    padding: 25px;
    text-align: center;
    color: #777;
}