*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html,body{
min-width: 1200px;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background-color: #FFFFFF;
    overflow-x: auto;
    
}
li{
    list-style: none;
}
a{
    text-decoration: none;
}
input,select{
    display: block;
    border: none;
    outline: none;
}
input::placeholder{ 
color: #B5B5B5;
}
/* 头部导航 */
.header {
    height: 57px;
    background: #3964FE;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}
.header-content {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.header-left-section {
    width: 870px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.header-left {
    display: flex;
    align-items: center;
}
.header-avatar {
    width: 40px;
    height: 40px;
    margin-right: 5px;
    border-radius: 8px;
}
.header-title {
    font-weight: bold;
    font-size: 23px;
    color: #FFFFFF;
    line-height: 48px;
}
.header-search-link {
    text-decoration: none;
    display: block;
}
.header-search {
    position: relative;
    width: 243px;
    height: 37px;
    background: #FFFFFF;
    border-radius: 19px;
    display: flex;
    align-items: center;
    padding: 0 50px 0 16px;
}
.search-placeholder {
    font-weight: 500;
    font-size: 16px;
    color: #979797;
    line-height: 33px;
}
.search-icon {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    cursor: pointer;
}
/* 左侧导航栏 */
.main-content {
    padding-top: 57px;
    min-height: calc(100vh - 57px);
}
.content-wrapper {
    width: 1200px;
    margin: 0 auto;
    padding: 30px 0 60px;
    display: flex;
    gap: 30px;
}
.content-left {
    width: 870px;
    display: flex;
    gap: 30px;
    align-items: flex-start;
}
/* 右侧导航栏 */
.content-right {
    width: 300px;
}
.tools-section {
    padding: 0 20px;
}
.tools-title {
    font-size: 16px;
    color: #000000;
    line-height: 33px;
    padding: 15px 0;
    border-bottom: 1px solid #ECEFF4;
    margin-bottom: 18px;
}
.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px 10px;
    margin-top: 20px;
}
.tool-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
}
.tool-icon {
    width: 50px;
    height: 50px;
    border-radius: 8px;
}
.tool-name {
 font-size: 14px;
    color: #000000;
    line-height: 20px;
}

/* 底部样式 */
.bottom {
    height: 80px;
    width: 100%;
    background-color: #000;
    min-width: 700px;
    flex-shrink: 0
}

.bottom .btop {
    color: #f5f5f5;
    text-align: center;
    height: 40px;
    max-width: 1200px;
    min-width: 700px;
    margin: 0 auto;
    line-height: 40px;
}

.bottom .btop a {
    display: inline-block;
    font-size: 12px;
    color: #fff;
    margin-right: 10px;
    text-decoration: underline;
    margin-left: 10px;
}

.bottom .btop a:hover {
    color: #e12d0a;
}

.bottom .bbottom {
    max-width: 1200px;
    min-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.bottom .bbottom span {
    font-size: 12px;
    color: #f5f5f5;
}

.bottom .bbottom span a {
    display: inline-block;
    color: #f5f5f5;
    text-decoration: underline;
}

.bottom .bbottom span a:hover {
    color: #e12d0a;
}