/* 外层区块 */
.focus-requirements {
    padding: 60px 20px;
    background: #f8f9fa;
    width: 100%;
}
.focus_requirements_container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.section-main-title {
    text-align: center;
    font-size: 32px;
    color: #002060;
    margin-bottom: 40px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;

}

/* 网格布局 */
.req-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

/* 卡片基础样式 */
.req-card {
    background-color: #1b4030;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 3px 12px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 2px solid transparent; /* 预留边框位置 */
}
/* hover全局发光效果 */
.req-card:hover {
    border-color: #28a745;
    box-shadow: 0 0 18px rgba(40, 167, 69, 0.35);
    transform: translateY(-4px);
}
/* 默认高亮卡片样式 */
.req-card.card-highlight {
    border-color: #28a745;
    box-shadow: 0 0 15px rgba(40, 167, 69, 0.25);
}

/* 图片容器 */
.card-img-box {
    position: relative;
    width: 100%;
    height: 180px;
}
.card-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
/* 图片底部半透黑+白色标题文字 */
.img-overlay-text {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    background: rgba(0,0,0,0.65);
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    padding: 10px 15px;
    letter-spacing: 1px;
}

/* 列表文字 */
.card-list {
    padding: 20px;
}
.card-list li {
    font-size: 15px;
    color: #ffffff;
    line-height: 2.2;
    padding-left: 14px;
    position: relative;
}
/* 左侧小方块圆点 */
.card-list li::before {
    /*content: "•";*/
    /*color: #fff;*/
    /*position: absolute;*/
    /*left: 0;*/
    content: "■";
    color: #fff;
    position: absolute;
    left: 0;
    font-size: 10px;
    top: 4px;
}

/* 响应式适配 */
@media (max-width: 992px) {
    .req-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .req-grid {
        grid-template-columns: 1fr;
    }
    .section-main-title {
        font-size: 26px;
    }
}