/*
 * 关于正凯区域 - PC/移动端分离
 * PC：.about_pc 仅桌面显示（左右结构）
 * 移动：.about_m 仅移动显示（上下结构：上 .r_cell.t_r 内容，下 img.about_img）
 */

/* 桌面端：只显示 PC 关于区，隐藏移动端块 */
@media (min-width:  768px) {
    .about_m {
        display: none !important;
    }
}

/* 移动端：只显示移动端关于区，隐藏 PC 块 */
@media (max-width:  767px) {
    .about_pc {
        display: none !important;
    }

    .about_m {
        display: block !important;
        margin-top: -30px;

    }

    .about_m_more{
        display: flex;
        justify-content: flex-start;
        align-items: center;
        gap: 4px;
        margin-top: 30px;
    }

    .about_m_more_a{
       
    }

    .about_m_wrap {
        width: 100% !important;
        max-width: 100%;
        padding: 24px 15px 20px;
        box-sizing: border-box;
        display: flex;
        flex-direction: column;
    }

    /* 上：.r_cell.t_r 关于正凯内容介绍 */
    .about_m .about_m_t {
        width: 100% !important;
        padding: 0 !important;
        order: 0;
    }

    .about_m .about_m_t .t_r_w {
        width: 100% !important;
        padding: 0 !important;
    }

    .about_m .about_m_t h4 {
        font-size: 22px;
        font-weight: bold;
        margin-bottom: 15px;
    }

    .about_m .about_m_t .th_d {
        font-size: 0;
        margin-top: 10px;
    }

    .about_m .about_m_t .t_d {
        font-size: 14px;
        line-height: 1.8;
    }

    .about_m .about_m_t .t_d p {
        margin-bottom: 1em;
    }

    .about_m .about_m_t .d_btn {
        margin-top: 16px;
    }

    /* 下：图片 .about_img */
    .about_m .about_m_pic {
        width: 100%;
        order: 1;
        margin: 0;
        padding: 0;
        margin-top: 0;
    }

    .about_m .about_m_pic .about_img {
        width: 100% !important;
        max-width: 100%;
        height: auto !important;
        display: block;
        vertical-align: top;
    }
}

@media (max-width: 480px) {
    .about_m_wrap {
        padding: 20px 12px 16px;
    }

    .about_m .about_m_t h4 {
        font-size: 20px;
    }

    .about_m .about_m_t .t_d {
        font-size: 13px;
    }
}

/* ========== 董事长致辞页 speech.html PC/移动端分离 ========== */
@media (min-width:  768px) {
    .about_speech_m {
        display: none !important;
    }
}

@media (max-width:  767px) {
    .about_speech_pc {
        display: none !important;
    }

    .about_speech_m {
        display: block !important;
    }

    /* 移动端 banner */
    .about_speech_m .about_speech_m_banner {
        width: 100%;
        height: 0;
        padding-bottom: 36%;
        overflow: hidden;
        position: relative;
        background: #eee;
    }

    .about_speech_m .about_speech_m_banner img {
        position: absolute;
        left: 50%;
        top: 0;
        transform: translateX(-50%);
        min-width: 100%;
        min-height: 100%;
        width: auto;
        height: 100%;
        object-fit: cover;
    }

    /* 移动端子导航：横向滚动仅限内容宽度，右侧不预留空白 */
    .about_speech_m_nav {
        background: #e7e7e7;
        padding: 6px 15px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        overflow-y: hidden;
    }

    .about_speech_m_nav .r_cell {
        display: flex;
        flex-wrap: nowrap;
        gap: 8px;
        width: max-content;
        min-width: min-content;
        box-sizing: border-box;
    }

    .about_speech_m_nav a {
        flex: 0 0 auto;
        padding: 8px 14px;
        font-size: 14px;
        line-height: 1.4;
        color: #333;
        text-decoration: none;
        white-space: nowrap;
        border-radius: 4px;
    }

    .about_speech_m_nav a.tab_light {
        background: #f08200;
        color: #fff;
    }

    /* 移动端正文区 */
    .about_speech_m_content {
        padding: 24px 15px 30px;
        box-sizing: border-box;
    }

    .about_speech_m_content .blue_bj {
        padding: 24px 16px;
        border-radius: 0;
    }

    .about_speech_m_content .t_r_w {
        width: 100% !important;
        padding: 0 !important;
    }

    .about_speech_m_content h4 {
        font-size: 20px;
        margin-bottom: 12px;
    }

    .about_speech_m_content .t_d {
        font-size: 14px;
        line-height: 1.8;
    }

    .about_speech_m_content .t_d p {
        margin-bottom: 1em;
    }

    .about_speech_m_content .about_speech_m_president {
        text-align: center;
        margin-top: 24px;
    }

    .about_speech_m_content .about_speech_m_president img.president_img {
        max-width: 100%;
        width: 280px;
        height: auto;
        display: block;
        margin: 0 auto 16px;
    }

    .about_speech_m_content .t_d_d {
        padding: 0;
        margin-top: 16px;
        text-align: center;
    }

    .about_speech_m_content .t_d_d h5 {
        font-size: 16px;
        margin-bottom: 8px;
    }

    .about_speech_m_content .t_d_d .letters {
        max-width: 120px;
        height: auto;
    }
}

@media (max-width: 480px) {
    .about_speech_m_content {
        padding: 20px 12px 24px;
    }

    .about_speech_m_content h4 {
        font-size: 18px;
    }

    .about_speech_m_content .t_d {
        font-size: 13px;
    }
}

/* ========== 集团简介/荣誉/资质/发展历程/正凯文化/文化活动 PC/移动端分离 ========== */
@media (min-width:  768px) {
    .about_intro_m,
    .about_honor_m,
    .about_credential_m,
    .about_memorabilia_m,
    .about_culture_m,
    .about_culture_cat47_m {
        display: none !important;
    }
}

@media (max-width:  767px) {
    .about_intro_pc,
    .about_honor_pc,
    .about_credential_pc,
    .about_memorabilia_pc,
    .about_culture_pc,
    .about_culture_cat47_pc {
        display: none !important;
    }

    .about_intro_m,
    .about_honor_m,
    .about_credential_m,
    .about_memorabilia_m,
    .about_culture_m,
    .about_culture_cat47_m {
        display: block !important;
    }

    /* 通用：关于正凯子页移动端 banner（与 speech 一致） */
    .about_intro_m .about_intro_m_banner,
    .about_honor_m .about_honor_m_banner,
    .about_credential_m .about_credential_m_banner,
    .about_memorabilia_m .about_memorabilia_m_banner,
    .about_culture_m .about_culture_m_banner,
    .about_culture_cat47_m .about_culture_cat47_m_banner {
        width: 100%;
        height: 0;
        padding-bottom: 36%;
        overflow: hidden;
        position: relative;
        background: #eee;
    }

    .about_intro_m .about_intro_m_banner img,
    .about_honor_m .about_honor_m_banner img,
    .about_credential_m .about_credential_m_banner img,
    .about_memorabilia_m .about_memorabilia_m_banner img,
    .about_culture_m .about_culture_m_banner img,
    .about_culture_cat47_m .about_culture_cat47_m_banner img {
        position: absolute;
        left: 50%;
        top: 0;
        transform: translateX(-50%);
        min-width: 100%;
        min-height: 100%;
        width: auto;
        height: 100%;
        object-fit: cover;
    }

    /* 集团简介 移动端正文 */
    .about_intro_m_content {
        padding: 24px 15px 30px;
        box-sizing: border-box;
    }

    .about_intro_m_content .i_news_text {
        font-size: 14px;
        line-height: 1.8;
    }

    .about_intro_m_content .i_news_text p {
        margin-bottom: 1em;
    }

    /* 集团荣誉/集团资质 移动端 */
    .about_honor_m_content,
    .about_credential_m_content {
        padding: 24px 15px 30px;
        box-sizing: border-box;
    }

    .about_honor_m_content .honor_th,
    .about_credential_m_content .honor_th {
        margin-bottom: 16px;
        font-size: 18px;
    }

    .about_honor_m_swiper,
    .about_credential_m_content .about_honor_m_swiper {
        margin-top: 16px;
    }

    .about_honor_m_swiper .swiper-container,
    .about_credential_m_content .swiper-container {
        overflow: hidden;
    }

    .about_honor_m_swiper .swiper-slide,
    .about_credential_m_content .swiper-slide {
        text-align: center;
        padding: 0 8px;
    }

    .about_honor_m_swiper .swiper-slide img,
    .about_credential_m_content .swiper-slide img {
        width: 100%;
        max-width: 280px;
        height: auto;
        display: block;
        margin: 0 auto 8px;
    }

    .about_honor_m_swiper .swiper-slide p,
    .about_credential_m_content .swiper-slide p {
        font-size: 13px;
        line-height: 1.4;
        margin: 0;
    }

    .about_honor_m_swiper .swiper-pagination,
    .about_credential_m_content .swiper-pagination {
        position: relative;
        margin-top: 12px;
    }

    /* 发展历程 移动端 */
    .about_memorabilia_m_content {
        padding: 24px 15px 30px;
        box-sizing: border-box;
    }

    .about_memorabilia_m_timeline {
        font-size: 14px;
        line-height: 1.6;
    }

    .about_memorabilia_m_timeline dl {
        margin-bottom: 12px;
    }

    .about_memorabilia_m_timeline dt {
        font-weight: bold;
        color: #f08200;
        margin-bottom: 4px;
    }

    .about_memorabilia_m_timeline dd {
        padding-left: 1em;
    }

    /* 正凯文化 移动端 */
    .about_culture_m_content {
        padding: 24px 15px 30px;
        box-sizing: border-box;
    }

    .about_culture_m_tabs {
        display: flex;
        gap: 8px;
        margin-bottom: 20px;
    }

    .about_culture_m_tabs a {
        padding: 8px 14px;
        font-size: 14px;
        color: #333;
        text-decoration: none;
        border-radius: 4px;
        background: #e7e7e7;
    }

    .about_culture_m_tabs a.tab_light {
        background: #f08200;
        color: #fff;
    }

    .about_culture_m_body .culture_m_item {
        font-size: 14px;
        line-height: 1.8;
        margin-bottom: 20px;
    }

    .about_intro_m_content .i_news_text {
        font-size: 13px;
    }

    .i_news_text p{
        font-size: 16px;
    }

    .r_cell a{
        min-height: 36px ;
    }
    .about_intro_m_content .i_news_text{
        margin-bottom: 16px;
    }

    .about_memorabilia_m_timeline{
        margin-bottom: 40px;
    }

    .about_memorabilia_m_timeline>dl>dt{
        padding: 18px 0;
    }
    .about_memorabilia_m_timeline .dt-empty {
        padding: 4px 0;
    }

    /* 文化活动页 移动端 */
    .about_culture_cat47_m_content {
        padding: 24px 15px 30px;
        box-sizing: border-box;
    }

    .about_culture_cat47_m_content .about_culture_m_tabs {
        display: flex;
        gap: 8px;
        margin-bottom: 20px;
    }

    .about_culture_cat47_m_content .about_culture_m_tabs a {
        padding: 8px 14px;
        font-size: 14px;
        color: #333;
        text-decoration: none;
        border-radius: 4px;
        background: #e7e7e7;
    }

    .about_culture_cat47_m_content .about_culture_m_tabs a.tab_light {
        background: #f08200;
        color: #fff;
    }

    .about_culture_cat47_m_intro {
        margin-bottom: 24px;
    }

    .about_culture_cat47_m_intro_pic {
        width: 100%;
        margin-bottom: 12px;
    }

    .about_culture_cat47_m_intro_pic img {
        width: 100%;
        height: auto;
        display: block;
    }

    .about_culture_cat47_m_intro_text {
        font-size: 14px;
        line-height: 1.8;
        color: #333;
    }

    /* 文化活动列表：移动端上中下结构（日期 / 标题 / 简介） */
    .about_culture_cat47_m_list {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .about_culture_cat47_m_list .about_culture_cat47_m_item {
        display: block;
        padding: 16px 0;
        border-bottom: 1px solid #eee;
    }

    .about_culture_cat47_m_list .about_culture_cat47_m_item:last-child {
        border-bottom: none;
    }

    .about_culture_cat47_m_list .about_culture_cat47_m_title {
        font-size: 15px;
        font-weight: 600;
        margin: 0 0 8px 0;
        line-height: 1.4;
    }

    .about_culture_cat47_m_list .about_culture_cat47_m_title a {
        color: #f08200;
        text-decoration: none;
    }

    .about_culture_cat47_m_list .about_culture_cat47_m_brief {
        font-size: 13px;
        line-height: 1.6;
        color: #666;
        margin: 0 0 8px 0;
    }

    .about_culture_cat47_m_list .about_culture_cat47_m_date {
        font-size: 12px;
        color: #999;
        margin: 0;
        text-align: right;
    }
}

@media (max-width: 480px) {
    .about_intro_m_content,
    .about_honor_m_content,
    .about_credential_m_content,
    .about_memorabilia_m_content,
    .about_culture_m_content,
    .about_culture_cat47_m_content {
        padding: 20px 12px 24px;
    }
}