.logo img {
    width: 580px;
}

.search-box {
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    width: 100%;
    max-width: 520px;
    padding: 20px;
}

.search-box input[type="text"] {
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin-bottom: 10px;
    width: 100%;
    box-sizing: border-box;
    outline: none;
}

.search-box button {
    padding: 10px;
    font-size: 16px;
    background-color: #2baff7;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
}

.search-box button:hover {
    background-color: #179ee6;
}

.result {
    max-width: 400px;
    margin-top: 20px;
    padding: 0 20px;
}

.result.authenticated {
    color: #008000;
}

.result.unauthenticated {
    color: #ff0000;
}

.footer {
    position: fixed;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    text-align: center;
    font-size: 14px;
    padding: 10px;
}

.tips {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
    color: #888;
    margin-top: 100px;
}

form {
    width: 400px;
}

/* 手机端响应 */
@media screen and (max-width: 768px) {

    .footer,
    .search-box {
        max-width: 300px;
    }
    .result{
        width: 320px;
    }

    .logo img {
        width: 340px;
    }

    form {
        width: 300px;
    }
}

/* 笔记本端响应 */
@media screen and (min-width: 769px) and (max-width: 1700px) {

    .footer,
    .search-box {
        width: 100%;
        max-width: 500px;
    }

    .logo img {
        width: 450px;
    }

    .tips {
        margin-top: 60px;
    }
}