/* 整体大背景 */
body {
    background-image: url('../images/c-bg1.jpg'); /* 替换为实际图片路径 */
    background-size: cover; /* 背景图覆盖整个容器，可根据需要调整 */
    background-position: bottom; /* 将背景图定位在底部 */
    background-repeat: no-repeat; /* 背景图不重复 */
    background-attachment: fixed;
}

/* 顶部导航栏样式 */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 20px;
    background-color: rgba(0, 0, 0, 0.8);
}

header .logo h1 a {
    display: block;
    height: 40px;
    border: 2px solid white;
    border-radius: 10px;
    color: white;
    font-size: 25px;
    font-weight: 700;
    line-height: 36px;
}

header nav ul {
    display: flex;
}

header nav ul li {
    margin: 0 30px;
}

header nav ul li a {
    color: rgb(175, 175, 175);
    font-size: 20px;
    padding-bottom: 8px;
    border-bottom: none;
    transition: all .3s;
}

header nav ul li a:hover {
    color: white;
    border-bottom: 3px solid white;
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.15);
}

header .user-actions ul {
    display: flex;
    align-items: center;
    height: 100%;
}

header .user-actions ul li {
    display: flex;
    flex-direction: column;
    color: white;
    transition: all .3s;
}

header .user-actions ul li:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.1);
}

header .user-actions ul .enter-Qq {
    margin-right: 15px;
}

header .user-actions ul li a {
    color: white;
    font-size: 12px;
    font-weight: 700;
}

header .user-actions span {
    display: block;
    text-align: center;
    font-size: 25px;
}

/* 主体部分 */
main {
    width: 1200px;
    margin: 0 auto;
    padding: 20px 100px;
    background-image: linear-gradient(
        to right,
        rgba(0, 0, 0, 0),
        rgba(0, 0, 0, 0.7) 10%,
        rgba(0, 0, 0, 0.7) 90%,
        rgba(0, 0, 0, 0) 100%
    );
}

/* 右侧功能栏样式 */
aside {
    display: flex;
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);   
    flex-direction: column;
    align-items: center;
}
  
aside ul li {
    margin: 5px 0;
}

aside ul li:nth-child(1) {
    margin: 50px 0;
}

aside ul li .contact-us {
    transform: rotate(90deg);
    font-weight: 700;
    color: white;
}
  
aside ul li a {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: white;
    transition: all .3s;
}

aside ul li .other-function span {
    font-size: 30px;
}

aside ul li .other-function p {
    font-size: 10px;
}

aside ul li a:hover {
    transform: scale(1.05);
    box-shadow: 1px 3px 0 rgba(255, 255, 255, 0.1);
}