/* 创始人说页面样式 */
.founder-section {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* 页面标题 */
.founder-editor-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e2f3e;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
    margin-bottom: 0.8rem;
    letter-spacing: 2px;
}

.founder-editor-content h1:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #e0211a;
}

.founder-editor-content .founder-subtitle {
    font-size: 1rem;
    color: #666;
    text-align: center;
    margin-bottom: 3rem;
}

/* 视频列表网格：4行3列 */
.video-list-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem 1.5rem;
}

/* 视频卡片 */
.video-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.video-link {
    text-decoration: none;
    display: block;
}

/* 视频封面容器 - 3:2 比例 */
.video-cover {
    position: relative;
    width: 100%;
    padding-bottom: 133%; /* 3:2 比例 (2/3 = 66.67%) */
    overflow: hidden;
    background: #1a1a1a;
    border-radius: 12px;
}

.video-cover img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.video-card:hover .video-cover img {
    transform: scale(1.05);
}

/* 播放图标 */
.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: rgba(224,33,26,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.9;
    transition: all 0.3s ease;
}

.play-icon i {
    color: #fff;
    font-size: 1.2rem;
    margin-left: 3px;
}

.video-card:hover .play-icon {
    width: 60px;
    height: 60px;
    background: #e0211a;
    opacity: 1;
}

/* 视频标题 */
.video-title {
    font-size: 0.95rem;
    font-weight: 500;
    color: #333;
    margin: 0.8rem 0;
    line-height: 1.4;
    text-align: center;
    padding: 0 0.3rem;
    transition: color 0.2s;
}

.video-card:hover .video-title {
    color: #e0211a;
}

/* 响应式布局 */
@media (max-width: 992px) {
    .video-list-grid {
        gap: 1.5rem;
    }

    .video-title {
        font-size: 0.9rem;
    }

    .play-icon {
        width: 40px;
        height: 40px;
    }

    .play-icon i {
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .founder-editor-content h1 {
        font-size: 1.8rem;
    }

    .video-list-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.2rem;
    }

    .video-title {
        font-size: 0.85rem;
    }

    .play-icon {
        width: 35px;
        height: 35px;
    }
}

@media (max-width: 480px) {
    .founder-editor-content h1 {
        font-size: 1.5rem;
    }

    .founder-editor-content .founder-subtitle {
        font-size: 0.85rem;
        margin-bottom: 2rem;
    }

    .video-list-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .video-title {
        font-size: 0.9rem;
    }
}