/* Header 样式 */
.site-header {
    background: #8B1A1A url('../image/head_bg.png') no-repeat -50px center;
    background-size: 100% 100%;
    height: 130px;
}

@media screen and (max-width: 1900px) {
    .site-header {
        background-size: cover;
        background-size: -180px 100%;
    }
}

/* 顶部红色信息栏 */
.top-bar {
    color: #fff;
    font-size: 14px;
}

.top-bar .container {
    width: 1570px;
    max-width: 1570px;
    margin: 0 auto;
    padding: 8px 0;
}

.top-bar .row {
    margin: 0;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-right: 3px !important;
}

.top-bar .col-md-12 {
    padding: 0;
}

.top-links {
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.top-links span:first-child {
    margin-right: 65px;
}

.top-links img {
    width: 16px;
    height: 16px;
    margin-right: 5px;
    vertical-align: middle;
}

.top-links .tel-number {
    font-size: 16px;
}

.top-links .divider {
    margin: 0 10px;
}

.top-links a {
    color: #fff;
    margin: 0 10px;
    text-decoration: none;
}

.top-links a:last-child {
    margin-left: 10px;
}

/* Logo和导航 */
.main-navbar {
    background-color: #fff;
    border-bottom: 1px solid #e5e5e5;
    position: relative;
}

.main-navbar .container {
    width: 1570px;
    max-width: 1570px;
    margin: 0 auto;
    padding: 0;
    position: relative;
}

/* Logo */
.school-logo {
    position: absolute;
    left: 0;
    top: 0px;
    z-index: 10;
}

.school-logo a {
    display: block;
    text-decoration: none;
}

.school-logo img {
    width: auto;
    display: block;
}

/* 导航菜单 */
.main-nav {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: 20px 0;
}

.nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.nav-item {
    margin-left: 30px;
    position: relative;
}

.nav-item + .nav-item {
    margin-left: 45px;
}

.nav-item > a {
    color: #962f32;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    padding: 10px 0;
    display: block;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}

/* 二级菜单 */
.sub-menu {
    list-style: none;
    margin: 0;
    padding: 10px 0;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    min-width: 150px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 100;
}

.sub-menu li {
    padding: 0;
}

.sub-menu li a {
    text-align: center;
    color: #333;
    text-decoration: none;
    font-size: 15px;
    padding: 10px 20px;
    display: block;
    white-space: nowrap;
    transition: all 0.3s;
}

/* 悬停效果 */
.main-nav ul li a:hover {
    color: #8B1A1A !important;
    border-bottom-color: #8B1A1A !important;
}

/* 二级菜单悬停效果 */
.nav-item:hover .sub-menu {
    opacity: 1 !important;
    visibility: visible !important;
}

/* 二级菜单项悬停效果 */
.sub-menu li a {
    position: relative;
    overflow: hidden;
}

.sub-menu li a:hover {
    background-color: #931d22 !important;
    color: #ffffff !important;
}

/* 确保悬停时文字为白色 - 高优先级 */
.nav-item .sub-menu li a:hover {
    color: #ffffff !important;
}

/* 闪光效果 */
.sub-menu li a::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

.sub-menu li a:hover::after {
    left: 100%;
}

/* 当前选中状态 */
.nav-item > a.active {
    color: #8B1A1A !important;
    border-bottom-color: #8B1A1A !important;
}

@media (max-width: 1600px) {
    .main-navbar .container{
        width: 1400px !important;
    }

    .nav-item + .nav-item {
        margin-left: 30px;
    }

}

/* 1440px 以下适配 */
@media (max-width: 1440px) {
    body{
        min-width: 1440px;
    }

    .site-header {
        background: #8B1A1A url(../image/head_bg.png) no-repeat -360px center;
        width: 1440px
    }

    .top-bar .row {
        margin: 0;
        display: flex;
        justify-content: flex-end;
        align-items: center;
        margin-right: 153px !important;
    }
}