/* operationalSupport.css - 运营保障页面样式 */

/* 背景容器样式 */
.background-container {
    height: 780px;
    width: 1920px;
}

.background-image {
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    width: 1920px;
    height: 915px;
}

/* Banner图样式 */
.banner-container {
    margin-bottom: 1.5rem;
}

.banner-image {
    width: 375px;
    height: 302px;
}

/* 移动端banner样式 */
.banner-container-mobile {
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
}

.main-menu-container {
    top: 700px !important;
}

.main-menu-container .second-active {
    margin-left: 20px;
}

.main-menu-container .third-active {
}

.banner-image-mobile {
    width: 375px;
    height: 302px;
    object-fit: cover;
}

/* 移动端banner蒙层 */
.banner-container-mobile::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(56, 56, 56, 0.5);
    z-index: 1;
}

/* 移动端banner文字 */
 .banner-container-mobile .lanmu{
position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0px;
    line-height: 36px;
    color: rgba(255, 255, 255, 1);
    text-align: center;
    white-space: nowrap;

}

/* 移动端标题导航菜单样式 */
.title-navigation {
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
    padding: 15px 0;
}

.title-nav .nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: flex-start;
    gap: 20px;
    flex-wrap: wrap;
}

.title-nav .nav-item a {
    text-decoration: none;
    color: #666;
    font-size: 12px;
    transition: color 0.3s ease;
}

.title-nav .nav-item.active a {
    color: #000;
    font-weight: bold;
}

.title-nav .nav-item a:hover {
    color: #333;
}

/* 面包屑导航悬浮菜单样式 */
.breadcrumb-menu {
    position: relative;
    display: inline-block;
}


.background-container {
    height: 302px;
    width: 375px;
}


.background-container img {}

.breadcrumb-link {
    color: inherit;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

/* 悬浮子菜单样式 */
.breadcrumb-submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #f5f5f5;
    border-radius: 4px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    width: 250px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.breadcrumb-submenu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu-item {
    padding: 12px 16px;
    border-bottom: 1px solid #e0e0e0;
    font-size: 14px;
    color: #333;
    cursor: pointer;
    transition: background-color 0.2s ease;
    white-space: nowrap;
}

.submenu-item:last-child {
    border-bottom: none;
}

.submenu-item:hover {
    background-color: #e3f2fd;
    color: #1976d2;
}

/* 移动端样式 */
@media (max-width: 767px) {
    .submenu-item {
        padding: 10px 14px;
        font-size: 13px;
    }
}

/* 程序设计训练展示区域样式 */
.programming-training-section {
    margin: 40px 0;
    padding: 0;
}

.section-title {
    text-align: left;
    margin-bottom: 40px;
}

.section-title h2 {
    color: #000000;
    font-size: 28px;
    font-weight: bold;
    margin: 0;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.course-card {
    background: #ffffff;
    /* border-radius: 12px; */
    /* box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1); */
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* .course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
} */

.course-image-placeholder {
    width: 350px;
    height: 282px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 14px;
    position: relative;
}

.course-image-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* .course-image-placeholder::after {
    content: "图片占位区域";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #999;
    font-size: 16px;
} */

.course-content {
    /* padding: 20px; */
    /* border: 1px solid #E9E9E9; */
    margin-top: 10px;
}

.course-title {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin: 0 0 10px 0;
    line-height: 1.4;
}

.course-subtitle {
    font-size: 14px;
    color: #666;
    margin: 0 0 15px 0;
    line-height: 1.5;
display: -webkit-box;
  text-overflow: ellipsis;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.course-duration {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #888;
    font-size: 14px;
}

.duration-icon {
    font-size: 16px;
}

/* 移动端响应式样式 */
@media (max-width: 991px) {
    .course-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 0 15px;
    }

    .section-title h2 {
        font-size: 24px;
    }

    .course-content {
        padding: 15px;
    }

    .course-title {
        font-size: 16px;
    }

    .course-subtitle {
        font-size: 13px;
    }
}

@media (max-width: 575px) {
    .course-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 0;
    }

    .section-title h2 {
        font-size: 22px;
    }

    .programming-training-section {
        padding: 0;
        margin: 30px 0;

    }


    .course-content {
        /* border: 1px solid #E9E9E9; */
        margin-top: 0;
    }

    .course-card {
        /* width: 343px; */
        height: 420px;
        margin-bottom: 20px;
        border: 1px solid #E9E9E9;
    }

}

@media screen and (max-width: 768px) {
    .banner-container-mobile::before {
        content: '群英荟萃 同心筑梦' !important;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        z-index: 2;
        font-size: 24px;
        font-weight: 700;
        letter-spacing: 0px;
        line-height: 36px;
        color: rgba(255, 255, 255, 1);
        text-align: center;
        white-space: nowrap;
    }
}