/* --- 字体引入 (确保页面能加载) --- */
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400&family=Poppins:wght@500;600&display=swap');

/* --- 容器设置 --- */
.hertz-video-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
    background-color: #fff;
    box-sizing: border-box;
}

/* --- 标题样式: Poppins Medium --- */
.hertz-section-title {
    text-align: center;
    color: #0F172A;            /* 使用您的品牌色 --hz-navy */
    font-family: 'Poppins', sans-serif;
    font-weight: 500;          /* Medium */
    font-size: 40px;
    margin-bottom: 50px;
    position: relative;
    padding-bottom: 15px;
    letter-spacing: -0.5px;    /* 微调字间距，更有质感 */
}

.hertz-section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: #ec682e; /* 使用您的品牌色 --hz-orange */
    margin: 0 auto;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

/* --- 视频网格布局 (电脑端 3列) --- */
.hertz-video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    align-items: stretch; 
}

/* --- 卡片样式 --- */
.hertz-video-card {
    background: #ffffff;
    border-radius: 12px;       /* 稍微加大圆角 */
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #E2E8F0; /* 使用您的边框色 --hz-border */
    display: flex;
    flex-direction: column;
}

.hertz-video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    border-color: rgba(236, 104, 46, 0.3); /* 悬停微橙色边框 */
}

/* --- 视频容器 (16:9 比例) --- */
.hertz-video-wrapper {
    position: relative;
    padding-bottom: 56.25%; 
    height: 0;
    overflow: hidden;
    background-color: #000;
}

.hertz-video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* --- 卡片文字内容 --- */
.hertz-card-content {
    padding: 25px;
    flex-grow: 1;
    text-align: left;
}

/* --- 卡片标题: Poppins SemiBold --- */
.hertz-card-content h3 {
    color: #0F172A;            /* 品牌深蓝 */
    font-family: 'Poppins', sans-serif;
    font-weight: 600;          /* SemiBold */
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 18px;
    border-bottom: 2px solid transparent; /* 预留位置，或者去掉下划线 */
    display: block;
}

/* --- 正文: Open Sans Regular --- */
.hertz-card-content p {
    color: #334155;            /* 品牌文字灰 */
    font-family: 'Open Sans', sans-serif;
    font-weight: 400;          /* Regular */
    font-size: 15px;           /* 稍微加大字号提升可读性 */
    line-height: 1.6;
    margin: 0;
}

/* --- 移动端响应式 --- */
@media screen and (max-width: 900px) {
    .hertz-video-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hertz-video-card {
        max-width: 500px;
        margin: 0 auto;
        width: 100%;
    }
    
    .hertz-section-title {
        font-size: 32px;
    }
}