/* 基础重置（IE11 兼容） */
html,
body,
div,
span,
h1,
h2,
h3,
h4,
h5,
h6,
p,
a,
img,
ul,
li,
footer,
header,
nav,
section,
article {
    margin: 0;
    padding: 0;
    border: 0;
}

article,
aside,
footer,
header,
nav,
section {
    display: block;
}

body {
    line-height: 1.5;
    font-family: "Microsoft YaHei", "微软雅黑", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #222;
    background-color: #fff;
}

ul {
    list-style: none;
}

a {
    color: #0b63ce;
    text-decoration: none;
}


img {
    max-width: 100%;
    height: auto;
    display: block;
    border: 0;
}

.w1440 {
    width: 1440px;
    margin: 0 auto;
}

.container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
}

.article-inner {
    min-height: 500px;
    margin: 40px auto;
}

/* 主题变量 */
:root {
    --topbar-bg: #4156a5;
    --primary: #3e5ea9;
    --text-inverse: #ffffff;
}

/* 顶部 */
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    transition: transform .25s ease;
}

.site-header.is-hidden {
    transform: translateY(-100%);
}

.topbar {
    background: var(--topbar-bg);
    color: var(--text-inverse);
}

.topbar-inner {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-pack: justify;
    justify-content: space-between;
    height: 120px;
}

.brand {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
}

.brand-logo {
    margin-right: 25px;
}

/* 搜索 */
.search-form {
    position: relative;
    display: inline-block;
    width: 102px;
    height: 33px;
    border: 1px solid rgba(255, 255, 255, .75);
    border-radius: 28px;
    background: transparent;
    transition: width .25s ease;
    box-sizing: border-box;
}

.search-input {
    position: absolute;
    left: 18px;
    right: 18px;
    top: 50%;
    height: 24px;
    margin-top: -12px;
    padding: 0 8px;
    color: #fff;
    background: transparent;
    border: none;
    outline: none;
    opacity: 0;
    width: 0;
    transition: opacity .2s ease;
}

.search-input::-ms-input-placeholder {
    color: #cbd3df;
}

.search-input::placeholder {
    color: #cbd3df;
}

.search-btn {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 32px;
    height: 32px;
    margin: 0;
    border: none;
    border-radius: 50%;
    background: transparent;
    cursor: pointer;
    transform: translate(-50%, -50%);
    transition: left .25s ease, transform .25s ease;
}

.search-btn:before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 24px;
    height: 24px;
    margin-left: -12px;
    margin-top: -12px;
    background: url("ss.png") no-repeat center;
}

.search-form.is-open .search-btn {
    left: calc(100% - 38px);
    top: 50%;
    width: 32px;
    height: 32px;
    transform: translate(0, -50%);
}

.search-form.is-open .search-input {
    opacity: 1;
    width: auto;
    right: 48px;
}

.search-form.is-open {
    width: 260px;
}

/* 子页头图 */
.subhero {
    position: relative;
    background: url("banner.png") center/cover no-repeat;
    color: #fff;
    min-height: 220px;
}

.subhero:before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background: rgba(0, 0, 0, .35);
    pointer-events: none;
}

.subhero-inner {
    padding: 48px 0;

    position: relative;
    z-index: 1;
}

.subhero-title {
    font-size: 40px;
    font-weight: 700;
    text-shadow: 0 2px 8px rgba(0, 0, 0, .35);
}

.breadcrumb {
    margin-top: 12px;
    color: rgba(255, 255, 255, .95);
    text-shadow: 0 1px 4px rgba(0, 0, 0, .25);
}

.breadcrumb a {
    color: #fff;
}

.breadcrumb .sep {
    margin: 0 8px;
    opacity: .9;
}

/* 栏目导航（复用 channel-list） */
.channel-bar {
    background: rgba(255, 255, 255, .9);
    box-shadow: 0 1px 0 rgba(0, 0, 0, .06);
}

.channel-list {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-pack: center;
    justify-content: center;
    padding: 0 24px;
    overflow-x: auto;
}

.channel-list li {
    margin: 0 16px;
}

.channel-list a {
    display: inline-block;
    padding: 14px 2px;
    color: #145992;
    background-image: linear-gradient(#145992, #145992);
    background-repeat: no-repeat;
    background-size: 0 2px;
    background-position: 0 100%;
    transition: background-size .3s ease;
}

.channel-list a:hover {
    background-size: 100% 2px;
}

/* 区块与标题 */
.section {
    padding: 40px 0;
    min-height: 500px;
}

.section-head {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -ms-flex-align: end;
    align-items: flex-end;
    margin-bottom: 16px;
}

.section-title {
    font-size: 26px;
    font-weight: 700;
}

.title-cn {
    color: #222;
}

.title-en {
    color: #8aa0d9;
    font-size: 12px;
    letter-spacing: 1px;
    margin-top: 6px;
}

/* 列表 */
.news-list {
    border-top: 1px solid #eee;
}

.news-item {
    border-bottom: 1px solid #eee;
    padding: 18px 0;
}

.news-link {
    display: block;
    color: inherit;
}

.news-meta {
    margin-bottom: 6px;
    color: #666;
    font-size: 14px;
}

.news-title {
    font-size: 18px;
    margin-bottom: 6px;
}

.news-excerpt {
    color: #666;
    font-size: 14px;
}


/* 渐显动画（与 JS 配合） */
.reveal-up {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity .5s ease, transform .5s ease;
}

.reveal-up.is-inview {
    opacity: 1;
    transform: none;
}

/* 返回顶部 */
.backtop {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 42px;
    height: 42px;
    border: none;
    border-radius: 50%;
    background: #145992;
    color: #fff;
    font-size: 20px;
    line-height: 42px;
    text-align: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    box-shadow: 0 8px 16px rgba(15, 22, 33, .15);
    transition: opacity .3s ease, visibility .3s ease, transform .2s ease;
    -webkit-appearance: none;
    z-index: 100;
}

.backtop:hover {
    transform: translateY(-2px);
}

.backtop.show {
    opacity: 1;
    visibility: visible;
}

/* 页脚（提取必要样式） */
footer {
    background: #f5f6f8;
    color: #333;
    padding: 40px 0;
}


footer a {
    color: #fff;
}

/* 响应式（移动优先补充） */
@media (max-width: 1024px) {
    .topbar-inner {
        height: 84px;
        padding: 0 16px;
    }

    .subhero-inner {
        padding: 36px 0;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 24px 0;
    }

    .section-title {
        font-size: 22px;
    }

    footer .btm_bottom {
        -ms-flex-direction: column;
        flex-direction: column;
    }
}

footer {
    width: 100%;
    overflow: hidden;
    padding: 126px 0 46px;
    position: relative;
    background: #4853ab url(footer.png) no-repeat right bottom;
}

footer .w1440 {
    overflow: initial;
    z-index: 2;
    position: relative;
}

footer .btm_top {
    margin-bottom: 40px;
}

footer .btm_top .b_imgage {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    margin-bottom: 40px;
}

footer .b_up {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 90px;
}

footer .b_up .select-style {
    padding: 0 60px;
    position: relative;
}

footer .b_up .select-style h2 {
    letter-spacing: 0;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0;
    cursor: pointer;
    font-size: 22px;
}

footer .b_up .select-style h2 .icon {
    margin-left: 20px !important;
    width: 16px;
    height: 16px;
    transition: all .4s;
}

footer .b_up .select-style h2.active .icon {
    transform: rotate(90deg);
}

footer .b_up .select-style ul {
    display: flex;
    align-items: center;
    position: absolute;
    bottom: -45px;
    width: 500px;
}

footer .b_up .select-style ul li {
    color: #f5abb2;
    margin-right: 35px;
    transition: all .4s;
}

footer .b_up .select-style ul li:hover {
    color: #ffffff;
}

footer .b_up .select-style:nth-child(1) {
    border-right: 1px solid rgba(255, 255, 255, .4);
}

footer .btm_bottom .fo_cm img {
    height: 17px;
    object-fit: contain;
}

footer .btm_bottom .fo_cm .p_min {
    display: flex;
    align-items: center;
}

footer .btm_bottom .fo_cm {
    display: flex;
    align-items: center;
}

footer .btm_bottom .fo_cm p {
    color: #fff;
    line-height: 1;
}

footer .btm_bottom .btm_l {
    display: flex;
    align-items: center;
    justify-content: center;
}

footer .btm_bottom .fo_cm .p1 {
    margin-right: 8px;
}

footer .btm_bottom .fo_cm .p2 {
    margin-right: 20px;
}

footer .btm_bottom .btm_l .dz {
    margin-right: 60px;
}

footer .btm_bottom .btm_l p a,
footer .btm_bottom .btm_r p a {
    color: #fff;
    transition: all .4s;
}

footer .btm_r {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 16px;
}

footer .btm_r p {
    margin: 0 15px;
}

/* 移动端：与首页一致的抽屉菜单与容器修正 */
@media screen and (max-width: 768px) {
    .topbar-inner {
        height: 64px;
        position: relative;
        padding-right: 56px;
    }

    .topbar .search-form {
        display: none;
    }

    .hamburger {
        display: block;
        position: absolute;
        right: 12px;
        top: 14px;
        width: 36px;
        height: 36px;
        border: none;
        border-radius: 6px;
        cursor: pointer;
        z-index: 1000;
        background: transparent;
    }

    .hamburger span {
        display: block;
        height: 2px;
        margin: 7px 6px;
        background: #fff;
        width: 24px;
    }

    .m-menu {
        display: block;
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        z-index: 999;
        pointer-events: none;
    }

    .m-menu-mask {
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        background: rgba(0, 0, 0, .35);
        opacity: 0;
        transition: opacity .25s ease;
    }

    .m-menu-panel {
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        width: 84%;
        max-width: 360px;
        background: #fff;
        box-shadow: -8px 0 20px rgba(15, 22, 33, .15);
        transform: translateX(100%);
        transition: transform .28s ease;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: 12px 16px 24px;
    }

    .m-menu.open {
        pointer-events: auto;
    }

    .m-menu.open .m-menu-mask {
        opacity: 1;
    }

    .m-menu.open .m-menu-panel {
        transform: translateX(0);
    }

    body.menu-open {
        overflow: hidden;
    }

    .m-menu .search-form {
        display: -ms-flexbox;
        display: flex;
        margin: 6px 0 12px;
        background: transparent;
        border: 1px solid transparent;
        transition: background-color .2s ease, border-color .2s ease;
    }

    .m-menu .search-form.is-open {
        background: #f3f6fb;
        border-color: #dfe4ee;
    }

    .m-menu .search-input {
        flex: 1;
        background: transparent;
        border: 0;
        color: #1f2d3d;
        width: 100%;
    }

    .m-menu .search-input::placeholder {
        color: #7a8aa0;
    }

    .m-menu .search-btn {
        width: 36px;
        height: 36px;
        background: #145992;
        border: 0;
        border-radius: 6px;
    }

    .m-menu .channel-list {
        display: block;
        padding: 0;
    }

    .m-menu .channel-list li {
        margin: 0;
        text-align: left;
    }

    .m-menu .channel-list a {
        display: block;
        padding: 14px 0;
        font-size: 18px;
        color: #145992;
        position: relative;
    }

    .m-menu .channel-list a:after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        height: 1px;
        background: #e6e9ef;
    }

    .container {
        max-width: 100%;
        padding: 0 12px;
        box-sizing: border-box;
    }

    .channel-bar {
        display: none;
    }

    /* 页脚响应式对齐首页 */
    footer {
        padding: 40px 0 40px;
    }

    footer .btm_top {
        margin-bottom: 0;
    }

    footer .b_up {
        margin-bottom: 0;
        flex-wrap: wrap;
    }

    footer .b_up .select-style {
        padding: 0 10px;
        margin-bottom: 20px;
        width: 100%;
    }

    footer .b_up .select-style:nth-child(1) {
        border-right: 0;
    }

    footer .b_up .select-style ul {
        display: flex !important;
        position: unset;
        justify-content: center;
        width: 100%;
    }

    footer .btm_bottom {
        margin-top: 0;
        padding-bottom: 0;
        padding-top: 0;
        flex-wrap: wrap;
    }

    footer .btm_bottom .btm_l {
        flex-wrap: wrap;
        padding-bottom: 0;
    }

    footer .btm_bottom .fo_cm {
        margin-right: 0;
        align-items: baseline;
        margin-bottom: 20px;
    }

    footer .btm_bottom .fo_cm p {
        margin-bottom: 10px;
    }

    footer .btm_bottom .fo_cm p:last-child {
        margin-bottom: 0;
    }

    footer .btm_bottom .fo_cm .p3 {
        width: 100%;
    }

    footer .btm_r {
        flex-wrap: wrap;
        margin-top: 0;
    }
}

/* PC 端隐藏汉堡与抽屉（与首页一致） */
@media screen and (min-width: 769px) {

    .hamburger,
    .m-menu {
        display: none !important;
    }
}

/* 栏目页视觉增强：更大留白与字号，桌面端优先 */
.channel-bar {
    background: #fff;
    box-shadow: 0 6px 24px rgba(15, 22, 33, .06);
}

.channel-list li {
    margin: 0 20px;
}

.channel-list a {
    padding: 18px 4px;
    font-size: 16px;
    font-weight: 600;
}

.section {
    padding: 64px 0;
}

.section-title {
    font-size: 30px;
}

.title-en {
    font-size: 13px;
    letter-spacing: 1.5px;
}

.news-item {
    padding: 22px 0;
}

.news-meta {
    font-size: 15px;
}

.news-title {
    font-size: 20px;
}

.news-excerpt {
    font-size: 15px;
    line-height: 1.7;
}

.subhero {
    min-height: 360px;
}

.subhero-inner {
    padding: 64px 0;
    padding-left: 40px;
}

.subhero-title {
    font-size: 52px;
}

@media screen and (min-width: 1440px) {
    .subhero {
        min-height: 420px;
    }

    .subhero-title {
        font-size: 60px;
    }

    .section-title {
        font-size: 34px;
    }

    .news-title {
        font-size: 22px;
    }

    .channel-list a {
        padding: 20px 6px;
        font-size: 18px;
    }
}

/* 子栏目 tabs */
.subtabs {
    margin: 8px 0 12px;
}

.subtabs-list {
    justify-content: flex-start;
    overflow-x: auto;
}

.subtabs-list .subtab {
    display: inline-block;
    padding: 8px 10px;
    border-radius: 999px;
    background: transparent;
    border: 1px solid transparent;
    color: #145992;
    font-weight: 600;
    white-space: nowrap;
}

.subtabs-list .subtab:hover {
    background: rgba(20, 89, 146, .06);
}

.subtabs-list .subtab.is-active {
    background: #145992;
    color: #fff;
    border-color: #145992;
}


/* 列表项交互增强 */
.news-list {
    position: relative;
}

.news-item {
    position: relative;
    padding-left: 18px;
    transition: background-color .25s ease;
}

.news-item:before {
    content: "";
    position: absolute;
    left: 0;
    top: 16px;
    bottom: 16px;
    width: 3px;
    background: transparent;
    transition: background-color .25s ease, height .25s ease;
}

.news-link {
    position: relative;
    padding-right: 36px;
}

.news-link:after {
    content: "→";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%) translateX(-6px);
    color: #8aa0d9;
    opacity: .0;
    transition: transform .25s ease, opacity .25s ease;
}

.news-title {
    transition: color .2s ease;
}

.news-item:hover {
    background-color: rgba(20, 89, 146, .03);
}

.news-item:hover:before {
    background: #145992;
}

.news-item:hover .news-title {
    color: #145992;
}

.news-item:hover .news-link:after {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

/* 键盘可达性 */
.news-link:focus {
    outline: 2px solid #145992;
    outline-offset: 2px;
}

@media screen and (max-width: 768px) {

    .brand-logo,
    .brand-name {
        max-height: 40px;
        height: 40px;
        width: auto;
    }

    .brand-logo {
        margin-right: 10px;
    }

    .brand-name {
        max-width: calc(100vw - 160px);
    }
}

@media screen and (max-width: 542px) {
    .brand-logo {
        height: 26px !important;
    }

    .brand-name {
        height: 18px !important;
    }
}

@media screen and (max-width: 360px) {
    .brand-name {
        max-height: 32px;
        height: 32px;
    }

}

/* 子页栏目导航（置于头图下，桌面可见） */
.channel-bar {
    background: rgba(255, 255, 255, .9);
    border-top: 1px solid #eef1f6;
    border-bottom: 1px solid #eef1f6;
}

.channel-list {
    justify-content: center;
}

.channel-list a.is-current {
    color: #145992;
    font-weight: 700;
    background-size: 100% 2px;
}

@media screen and (max-width: 768px) {
    .channel-bar {
        display: none;
    }
}

@media screen and (max-width: 768px) {

    /* 手机端 subtabs 横滑胶囊样式 */
    .subtabs {
        position: relative;
        margin: 8px 0 6px;
        padding: 0;
        overflow: hidden;
    }

    .subtabs-list {
        display: -ms-flexbox;
        display: flex;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding: 0 28px;
        width: 100%;
    }

    .subtabs-list::-webkit-scrollbar {
        display: none;
    }

    .subtabs-list .subtab {
        padding: 8px 12px;
        margin-right: 8px;
        border-radius: 999px;
        border: 1px solid #dfe4ee;
        background: #fff;
        color: #145992;
        font-weight: 600;
    }

    .subtabs-list .subtab.is-active {
        background: #145992;
        border-color: #145992;
        color: #fff;
    }

    /* 左右渐隐指示 */
    .subtabs:before,
    .subtabs:after {
        content: "";
        position: absolute;
        top: 0;
        bottom: 0;
        width: 24px;
        pointer-events: none;
        transition: opacity .2s ease;
    }

    .subtabs:before {
        left: 0;
        background: linear-gradient(90deg, #fff 0, rgba(255, 255, 255, 0) 100%);
        opacity: 0;
    }

    .subtabs:after {
        right: 0;
        background: linear-gradient(270deg, #fff 0, rgba(255, 255, 255, 0) 100%);
        opacity: 0;
    }

    .subtabs.is-left:before {
        opacity: 1;
    }

    .subtabs.is-right:after {
        opacity: 1;
    }
}

@media screen and (max-width: 768px) {
    .subhero {
        min-height: 200px;
    }

    .subhero-inner {
        padding: 28px 12px;
    }

    .subhero-title {
        font-size: 34px;
    }
}

@media screen and (max-width: 360px) {
    .subhero {
        min-height: 180px;
    }

    .subhero-title {
        font-size: 30px;
    }
}


@media screen and (max-width: 1600px) {
    .w1440 {
        width: 80%;
    }
}

@media screen and (max-width: 1200px) {
    .w1440 {
        width: 90%;
    }
}




@media screen and (max-width: 998px) {


    footer .btm_top {
        padding-bottom: 0px;

    }

    footer .btm_top .footer_t_l {
        display: none;
    }

    footer .btm_top .footer_t_r {
        width: 100%;
        margin-top: 30px;
        flex-direction: column;
        justify-content: center;
    }

    footer .btm_top .footer_t_r .or {
        width: 118px;
    }

    footer .btm_top .footer_t_r .add {
        padding-left: 0;
        margin-top: 30px;
        width: auto;
    }

    footer .btm_top .footer_t_r .add li .ic {
        width: 45px;
        height: 45px;
        padding-top: 0;
    }

    footer .btm_bottom {
        flex-wrap: wrap;
        flex-direction: column-reverse;
        padding-top: 30px;
    }

    footer .btm_bottom .btm_l {
        width: 100%;
        margin-top: 20px;
        padding-bottom: 30px;
    }

    footer .btm_bottom .btm_r {
        width: 100%;
        justify-content: center;
    }
}

@media screen and (max-width: 768px) {


    footer .btm_bottom .btm_l .dz {
        margin-right: 0;
    }

    footer .btm_bottom {

        padding-top: 0;
    }

    footer .btm_bottom .fo_cm {

        margin-right: 0;

        align-items: baseline;
        margin-bottom: 20px;
    }

    footer .btm_bottom .fo_cm p {
        margin-right: 10px;
        width: auto;
        text-align: center;
        line-height: 1;
        margin-right: 0;
        margin-bottom: 10px;
    }

    footer .btm_bottom .fo_cm p:last-child {
        margin-bottom: 0;
    }

    footer .btm_bottom .fo_cm .p3 {
        width: 100%;

    }

    footer .btm_bottom .fo_cm .p1 {

        margin-right: 10px;
    }

    footer .btm_bottom .fo_cm .p2 {
        margin-right: 0;

    }



    footer {

        padding: 40px 0 40px;
    }

    footer .btm_top {

        margin-bottom: 0px;

    }

    footer .b_up {

        margin-bottom: 0px;
    }

    footer .b_up .select-style {

        padding: 0 10px;
    }

    footer .b_up .select-style ul {

        display: flex !important;
        position: unset;
        justify-content: center;
        width: 100%;
    }

    footer .b_up {

        flex-wrap: wrap;
    }

    footer .b_up .select-style {
        margin-bottom: 10px;
        width: 100%;

        margin-bottom: 20px;

    }

    footer .b_up .select-style h2 {
        margin-bottom: 10px;
        justify-content: center;
    }

    footer .b_up .select-style:nth-child(1) {

        border-right: 0px solid rgb(255, 255, 255, 0.4);
    }

    footer .b_up .select-style ul li {

        margin: 0 15px;
    }

    footer .btm_bottom {
        margin-top: 0px;
        padding-bottom: 0px;
        padding-top: 0;
    }


    footer .btm_bottom .btm_l {
        flex-wrap: wrap;
        margin-top: 0px;
        /* padding-bottom: 15px; */
        padding-bottom: 0;
    }

    footer .btm_bottom .btm_l .d0 {

        flex-wrap: wrap;
        margin-top: 0px;
    }

    footer .btm_bottom .btm_r {
        flex-wrap: wrap;
        margin-top: 0;
    }

    footer .btm_top .b_imgage {

        margin-bottom: 20px;
    }

    footer .b_up .select-style h2 .icon {
        display: none;
    }

    footer .img_cm img {

        width: 100%;
    }

    footer .img_cm {

        width: 100%;
    }


    footer .btm_bottom .fo_cm .p_min {

        flex-wrap: wrap;
        justify-content: center;
        display: unset;
    }

    footer .btm_r p {
        line-height: 1;
        margin-bottom: 10px;
    }

}