* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-size: 15px;
    font-family: "Outfit", sans-serif;
    width: 100%;
    height: 100vh;
    background: linear-gradient(135deg, #8bc6ec 0%, #9599e2 100%);
    display: flex;
}

.qr-code-container {
    background-color: hsl(0, 0%, 100%);
    width: 80%;
    padding: 1rem;
    margin: auto;
    border-radius: 1rem;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;

    box-shadow: 0 1rem 1rem rgba(0, 0, 0, 0.1);
}

.qr-code {
    width: 100%;
    border-radius: 1rem;
}

article {
    text-align: center;
    padding: 1rem;
}

.title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.subtitle {
    color: #777;
}

/* 媒体查询 */
@media (min-width: 768px) {
    .qr-code-container {
        width: 40%;
    }
}

@media (min-width: 1200px) {
    .qr-code-container {
        width: 25%;
    }
}

@media (min-width: 1440px) {
    .qr-code-container {
        width: 20%;
    }

    article {
        text-align: center;
        padding: 0rem;
    }

    .subtitle {
        margin-bottom: 1rem;
    }
}