body { margin: 0; padding: 0; background: #333; display: flex; justify-content: center; }

#center1_mobile_wrap {
    width: 380px; margin: 0 auto; padding: 15px 10px; background: #f4f5f7; box-sizing: border-box; overflow-x: hidden; font-family: "Microsoft YaHei", sans-serif; min-height: 100vh;
}

#top1_header_container {
    position: relative; display: flex; justify-content: center; align-items: center; margin: 0 0 8px; padding: 5px 0;
}

#top1_main_title {
    font-size: 18px; color: #1E5BB8; text-align: center; margin: 0; line-height: 1.4;
}

#top1_hamburger_menu {
    position: absolute; right: 5px; top: 50%; transform: translateY(-50%); width: 22px; height: 16px; display: flex; flex-direction: column; justify-content: space-between; cursor: pointer;
}

#top1_hamburger_line1 { width: 100%; height: 3px; background-color: #1E5BB8; border-radius: 2px; }
#top1_hamburger_line2 { width: 100%; height: 3px; background-color: #1E5BB8; border-radius: 2px; }
#top1_hamburger_line3 { width: 100%; height: 3px; background-color: #1E5BB8; border-radius: 2px; }

#top2_sub_title {
    font-size: 14px; color: #666; text-align: center; margin: 0 0 16px; padding: 0 5px; line-height: 1.5;
}

#right1_bottom1_back_top {
    position: fixed; left: calc(50% + 131px); top: 50%; transform: translateY(-50%); width: 44px; height: 44px; background-color: #1E5BB8; color: #fff; border-radius: 50%; display: flex; flex-direction: column; justify-content: center; align-items: center; font-size: 18px; box-shadow: 0 2px 6px rgba(0,0,0,0.3); cursor: pointer; z-index: 1000; line-height: 1.2; text-decoration: none;
}

#right1_bottom1_back_top:active { background-color: #15508f; }

/* 目录 section */
#center2_toc_section {
    background: #fff; border-radius: 8px; padding: 15px; margin: 0 0 12px; box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
#center2_toc_section_h2_1 {
    font-size: 16px; color: #fff; background: #1E5BB8; padding: 6px 12px; border-radius: 4px; margin: 0 0 12px;
}
#center2_toc_section_ul_1 {
    display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0;
}
#center2_toc_section_li_1,
#center2_toc_section_li_2,
#center2_toc_section_li_3,
#center2_toc_section_li_4 {
    width: calc(50% - 4px);
    box-sizing: border-box;
    background-color: #eef2f9;
    color: #1E5BB8;
    border: 1px solid #d6deec;
    border-radius: 6px;
    padding: 10px 8px;
    font-size: 13px;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
}
#center2_toc_section_li_1:active,
#center2_toc_section_li_2:active,
#center2_toc_section_li_3:active,
#center2_toc_section_li_4:active { background-color: #1E5BB8; color: #fff; }

/* sec_1 一、活动概况 */
#center3_sec_1 {
    background: #fff; border-radius: 8px; padding: 15px; margin: 0 0 12px; box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
#center3_sec_1_h2_1 {
    font-size: 16px; color: #fff; background: #1E5BB8; padding: 6px 12px; border-radius: 4px; margin: 0 0 12px;
}
#center3_sec_1_sub_1,
#center3_sec_1_sub_2,
#center3_sec_1_sub_3,
#center3_sec_1_sub_4,
#center3_sec_1_sub_5 {
    font-size: 14px; color: #b45309; font-weight: bold; margin: 12px 0 6px; padding: 4px 0; border-bottom: 1px dashed #fde68a;
}
#center3_sec_1_p_1,
#center3_sec_1_p_2,
#center3_sec_1_p_3,
#center3_sec_1_p_4,
#center3_sec_1_p_5,
#center3_sec_1_p_6,
#center3_sec_1_p_7,
#center3_sec_1_p_8,
#center3_sec_1_p_9 {
    font-size: 13px; color: #333; line-height: 1.7; margin: 0 0 8px; text-align: justify; text-indent: 2em;
}
#center3_sec_1_p_1 { font-weight: bold; color: #1E5BB8; }

/* sec_2 二、核心活动议程 */
#center4_sec_2 {
    background: #fff; border-radius: 8px; padding: 15px; margin: 0 0 12px; box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
#center4_sec_2_h2_1 {
    font-size: 16px; color: #fff; background: #1E5BB8; padding: 6px 12px; border-radius: 4px; margin: 0 0 12px;
}
#center4_sec_2_p_1,
#center4_sec_2_p_2,
#center4_sec_2_p_3,
#center4_sec_2_p_4,
#center4_sec_2_p_5,
#center4_sec_2_p_6,
#center4_sec_2_p_7,
#center4_sec_2_p_8,
#center4_sec_2_p_9,
#center4_sec_2_p_10,
#center4_sec_2_p_11,
#center4_sec_2_p_12 {
    font-size: 13px; color: #333; line-height: 1.7; margin: 0 0 8px; text-align: justify; text-indent: 2em;
}
#center4_sec_2_round_1,
#center4_sec_2_round_2,
#center4_sec_2_round_3,
#center4_sec_2_round_4,
#center4_sec_2_round_5 {
    font-size: 14px; color: #b45309; font-weight: bold; margin: 14px 0 6px; padding: 6px 8px; background: #fff7ed; border-left: 3px solid #c2410c; border-radius: 4px;
}
#center4_sec_2_ol_1 {
    font-size: 13px; color: #333; line-height: 1.7; margin: 4px 0 10px; padding-left: 28px;
}
#center4_sec_2_ol_1_li_1,
#center4_sec_2_ol_1_li_2,
#center4_sec_2_ol_1_li_3,
#center4_sec_2_ol_1_li_4 {
    margin: 0 0 4px; text-align: justify; padding-left: 4px;
}

/* sec_3 三、会后落地保障机制 */
#center5_sec_3 {
    background: #fff; border-radius: 8px; padding: 15px; margin: 0 0 12px; box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
#center5_sec_3_h2_1 {
    font-size: 16px; color: #fff; background: #1E5BB8; padding: 6px 12px; border-radius: 4px; margin: 0 0 12px;
}
#center5_sec_3_sub_1,
#center5_sec_3_sub_2,
#center5_sec_3_sub_3,
#center5_sec_3_sub_4 {
    font-size: 14px; color: #b45309; font-weight: bold; margin: 12px 0 6px; padding: 4px 0; border-bottom: 1px dashed #fde68a;
}
#center5_sec_3_p_1,
#center5_sec_3_p_2,
#center5_sec_3_p_3,
#center5_sec_3_p_4,
#center5_sec_3_p_5,
#center5_sec_3_p_6 {
    font-size: 13px; color: #333; line-height: 1.7; margin: 0 0 8px; text-align: justify; text-indent: 2em;
}

/* sec_4 四、活动预期成效 */
#center6_sec_4 {
    background: #fff; border-radius: 8px; padding: 15px; margin: 0 0 12px; box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
#center6_sec_4_h2_1 {
    font-size: 16px; color: #fff; background: #1E5BB8; padding: 6px 12px; border-radius: 4px; margin: 0 0 12px;
}
#center6_sec_4_sub_1,
#center6_sec_4_sub_2,
#center6_sec_4_sub_3,
#center6_sec_4_sub_4 {
    font-size: 14px; color: #b45309; font-weight: bold; margin: 12px 0 6px; padding: 4px 0; border-bottom: 1px dashed #fde68a;
}
#center6_sec_4_p_1,
#center6_sec_4_p_2,
#center6_sec_4_p_3,
#center6_sec_4_p_4 {
    font-size: 13px; color: #333; line-height: 1.7; margin: 0 0 8px; text-align: justify; text-indent: 2em;
}