/* ========== 全局重置与基础样式 ========== */
html,
body {
    margin: 0;
    padding: 0;
}

*,
*:before,
*:after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
    color: #222;
    background-color: #fff;
    line-height: 1.6;
}

img {
    width: 100%;
    display: block;
    border: 0;
}

a {
    color: #004e8f;
    text-decoration: none;
}

a:hover {
    text-decoration: none;
}

li {
    list-style: none;
}

button {
    border: none;
    outline: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0;
    padding: 0;
}

.container {
    width: 1500px;
    max-width: 100%;
    margin: 0 auto;
}

/* ========== 动画系统 ========== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        -webkit-transform: translateY(30px);
        -ms-transform: translateY(30px);
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        -webkit-transform: translateY(0);
        -ms-transform: translateY(0);
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        -webkit-transform: translateX(-50px);
        -ms-transform: translateX(-50px);
        transform: translateX(-50px);
    }

    to {
        opacity: 1;
        -webkit-transform: translateX(0);
        -ms-transform: translateX(0);
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        -webkit-transform: translateX(50px);
        -ms-transform: translateX(50px);
        transform: translateX(50px);
    }

    to {
        opacity: 1;
        -webkit-transform: translateX(0);
        -ms-transform: translateX(0);
        transform: translateX(0);
    }
}

/* 滚动触发动画 */
.reveal-on-scroll {
    opacity: 0.1;
    -webkit-transform: translateY(30px);
    -ms-transform: translateY(30px);
    transform: translateY(30px);
    -webkit-transition: all 0.6s ease;
    -ms-transition: all 0.6s ease;
    transition: all 0.6s ease;
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    -webkit-transform: translateY(0);
    -ms-transform: translateY(0);
    transform: translateY(0);
}

.reveal-on-scroll-left {
    opacity: 0.1;
    -webkit-transform: translateX(-50px);
    -ms-transform: translateX(-50px);
    transform: translateX(-50px);
    -webkit-transition: all 0.8s ease;
    -ms-transition: all 0.8s ease;
    transition: all 0.8s ease;
}

.reveal-on-scroll-left.is-visible {
    opacity: 1;
    -webkit-transform: translateX(0);
    -ms-transform: translateX(0);
    transform: translateX(0);
}

.reveal-on-scroll-right {
    opacity: 0.1;
    -webkit-transform: translateX(50px);
    -ms-transform: translateX(50px);
    transform: translateX(50px);
    -webkit-transition: all 0.8s ease;
    -ms-transition: all 0.8s ease;
    transition: all 0.8s ease;
}

.reveal-on-scroll-right.is-visible {
    opacity: 1;
    -webkit-transform: translateX(0);
    -ms-transform: translateX(0);
    transform: translateX(0);
}

/* 悬停动画效果 */
.hover-lift {
    -webkit-transition: -webkit-transform 0.3s ease, box-shadow 0.3s ease;
    -ms-transition: -ms-transform 0.3s ease, box-shadow 0.3s ease;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    -webkit-transform: translateY(-5px);
    -ms-transform: translateY(-5px);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.hover-scale {
    -webkit-transition: -webkit-transform 0.3s ease;
    -ms-transition: -ms-transform 0.3s ease;
    transition: transform 0.3s ease;
}

.hover-scale:hover {
    -webkit-transform: scale(1.05);
    -ms-transform: scale(1.05);
    transform: scale(1.05);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(3, 66, 141, 0.3);
}

/* 轮播标题动画 */
.hero-caption {
    -webkit-animation: fadeInUp 1s ease 0.5s both;
    -ms-animation: fadeInUp 1s ease 0.5s both;
    animation: fadeInUp 1s ease 0.5s both;
}

/* 重置轮播标题动画 */
.hero-caption.reset-animation {
    -webkit-animation: none;
    -ms-animation: none;
    animation: none;
    opacity: 0;
    -webkit-transform: translateY(30px);
    -ms-transform: translateY(30px);
    transform: translateY(30px);
}

/* ========== 头部 Header ========== */
.site-header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 201px;
    z-index: 30;
    background: url(topbj.png) no-repeat center top;
    background-size: 100% 100%;
    -webkit-transition: all 0.3s ease;
    -ms-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.site-header.is-condensed {
    background-color: #033d82;
    -webkit-transform: translateY(-20px);
    -ms-transform: translateY(-20px);
    transform: translateY(-20px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.header-inner {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-pack: justify;
    justify-content: space-between;
    height: 100px;
}

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

.logo img {
    height: 60px;
}

.logo .logo-text {
    height: 36px;
    width: auto;
    margin-left: 22px;
}

/* ========== 导航 Nav ========== */
.site-nav {
    margin-top: 36px;
}

.nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    justify-content: center;
}

.nav-list li {
    margin: 0;
}

.nav-list a {
    display: block;
    padding: 14px 39px;
    color: #fff;
    font-size: 20px;
    font-weight: bold;
}

.nav-list a:hover {
    background: rgba(255, 255, 255, 0.1);
    text-decoration: none;
}

/* ========== 轮播图 ========== */
.hero {
    position: relative;
    z-index: 10;
    margin-top: -56px;
}

.hero-slider-wrap {
    position: relative;
}

.hero-slider {
    overflow: hidden;
}

.hero-slide {
    height: 894px;
    background-size: cover;
    background-position: center center;
    position: relative;
}

.hero-caption {
    position: absolute;
    top: 36%;
    left: 110px;
    bottom: auto;
    max-width: 760px;
    background: none;
    color: #fff;
    padding: 0;
}

.hero-caption .eyebrow {
    margin: 0 0 30px;
    font-size: 30px;
    line-height: 1.25;
    font-weight: bold;
    color: #fff;
}

.hero-caption .eyebrow:after {
    content: "";
    display: block;
    width: 68px;
    height: 8px;
    background: #a61f2a;
    margin-top: 12px;
    margin-bottom: 18px;
}

.hero-caption h2 {
    font-size: 54px;
    color: #fff;
    font-weight: normal;
}

.hero-caption p {
    margin: 0;
    font-size: 54px;
    line-height: 54px;
    text-indent: 2em;
}

/* 视口>=1500px，caption 贴合 1500 容器左侧再留 24px 内边距 */
@media (min-width: 1500px) {
    .hero-caption {
        left: calc((100% - 1500px) / 2 + 24px);
    }
}



/* 自定义箭头 */
.slick-arrow.hero-prev,
.slick-arrow.hero-next {
    position: absolute;
    top: 50%;
    margin-top: -31px;
    width: 62px;
    height: 62px;
    cursor: pointer;
    z-index: 5;
}

.slick-arrow.hero-prev {
    left: 24px;
    background: url(zjt.png) no-repeat center center;
}

.slick-arrow.hero-next {
    right: 24px;
    background: url(zjt.png) no-repeat center center;
    -webkit-transform: rotate(180deg);
    -ms-transform: rotate(180deg);
    transform: rotate(180deg);
}

/* Hero 分页器 */
.hero-slider .slick-dots {
    position: absolute;
    right: 0;
    bottom: 50px;
    width: auto;
    display: flex;
    margin: 0;
    padding: 0;
}

.hero-slider .slick-dots button {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    opacity: 0.5;
    border: 1px solid #fff;
    cursor: pointer;
    background: transparent;
    padding: 0;
    margin: 0 4px;
    color: #fff;
    font-size: 18px;
}

.slick-active button {
    background: #033d82 !important;
    opacity: 1 !important;
    border: 1px solid #033d82 !important;
}

/* 视口>=1500px 时，将 dots 吸附到 1500px 容器的右侧（再留 24px 内边距） */
@media (min-width: 1500px) {
    .hero-slider .slick-dots {
        right: calc((100% - 1500px) / 2 + 24px);
    }
}

/* ========== 公共区块样式 ========== */
.section {
    padding: 38px 0 74px;
}

.section-head {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

/* 标题组 */
.section-head .title-wrap {
    background: url('btbj.png') no-repeat center;
    width: 294px;
    height: 90px;
}

.section-head .title-wrap h3 {
    margin: 0;
    text-align: center;
    margin-top: 20px;
}

.section-head .title-wrap .cn {
    font-size: 36px;
    line-height: 1;
    color: #004e8f;
    letter-spacing: 2px;
}

.section-head .title-wrap .sub-en {
    margin-top: 4px;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    justify-content: center;
}

.section-head .title-wrap .bar {
    display: inline-block;
    width: 15px;
    height: 3px;
    background: #004e8f;
    margin-right: 11px;
}

.section-head .title-wrap .en {
    font-size: 18px;
    color: #999999;
}

.section-head .more {
    color: #004e8f;
    display: inline-flex;
    -ms-flex-align: flex-end;
    align-items: flex-end;
}

.section-head .more:before {
    content: "";
    display: inline-block;
    width: 32px;
    height: 39px;
    background: url('more.png') no-repeat;
    margin-right: -10px;
}


/* ========== 底部 ========== */
.w1440 {
    width: 1440px;
    margin: 0 auto;
}

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

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

footer {
    width: 100%;
    overflow: hidden;
    padding: 43px 0;
    position: relative;
    background: url(footer.png) no-repeat;
    background-size: 100% 100%;
}

.brand-logo,
.brand-name {
    width: auto;
}

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

.fnt_14 {
    color: #fff;
    opacity: .7;
}

footer svg {
    margin: 0 !important;
}

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 .select-style h2 {

    letter-spacing: 0px;
    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.active .icon {

    transform: rotate(90deg);
}

footer .b_up .select-style h2 .icon {
    margin-left: 20px !important;
    width: 16px;
    height: 16px;
    transition: all 0.4s;
}

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 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 0.4s;
}

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

footer .b_up .select-style:nth-child(1) {
    border-right: 1px solid rgb(255, 255, 255, 0.4);

}

footer .btm_bottom .fo_cm img {
    height: 17px;
    /* width: 20px; */
    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;
    /* opacity: 0.6; */
    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 {

    color: #fff;
    transition: all 0.4s;
}

footer .btm_bottom .btm_r p a {

    color: #fff;
    transition: all 0.4s;
}


footer .btm_r {

    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 16px;
}

footer .btm_r p {
    margin: 0 15px;

}

/* ========== 滚动显隐 ========== */
.reveal-on-scroll {
    opacity: 0.01;
    filter: alpha(opacity=1);
    -webkit-transform: translateY(18px);
    -ms-transform: translateY(18px);
    transform: translateY(18px);
    -webkit-transition: opacity 0.5s ease, -webkit-transform 0.5s ease;
    -ms-transition: opacity 0.5s ease, -ms-transform 0.5s ease;
    transition: transform 0.5s ease, opacity 0.5s ease;
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    filter: none;
    -webkit-transform: none;
    -ms-transform: none;
    transform: none;
}

/* ========== 响应式设计 ========== */
/* 大屏桌面 */
@media (max-width: 1600px) {
    .container {
        width: 1400px;
    }
}

@media (max-width: 1400px) {
    .container {
        width: 1200px;
    }
}

/* 中等屏幕 */
@media (max-width: 1200px) {
    .container {
        width: 1000px;
    }

    .hero-caption .eyebrow {
        font-size: 24px;
    }

    .hero-caption h2,
    .hero-caption p {
        font-size: 40px;
        line-height: 48px;
    }


    /* 在1200px开始使用背景颜色代替背景图 */
    .site-header {
        background: #033d82;
    }

    /* 轮播图响应式调整 */
    .hero-slide {
        height: 600px;
    }





    /* 轮播箭头响应式调整 */
    .slick-arrow.hero-prev {
        left: 15px;
        width: 55px;
        height: 55px;
        margin-top: -27px;
    }

    .slick-arrow.hero-next {
        right: 15px;
        width: 55px;
        height: 55px;
        margin-top: -27px;
    }

    /* 分页器响应式调整 */
    .hero-slider .slick-dots {
        bottom: 30px;
        right: 20px;
    }

    .hero-slider .slick-dots button {
        width: 35px;
        height: 35px;
        font-size: 16px;
        margin: 0 3px;
    }

    /* 显示汉堡菜单 */
    .nav-toggle {
        display: block;
    }

    /* 调整导航为移动端侧滑样式 */
    .site-nav {
        position: fixed;
        top: 0;
        left: -280px;
        width: 280px;
        height: 100vh;
        background: #033d82;
        z-index: 40;
        transition: left 0.3s ease;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.15);
        overflow-y: auto;
        margin-top: 0;
    }

    .site-nav.is-open {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        padding: 80px 0 20px;
        margin: 0;
    }

    .nav-list li {
        width: 100%;
    }

    .nav-list a {
        display: block;
        padding: 18px 24px;
        font-size: 16px;
        color: #fff;
        text-decoration: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        transition: background-color 0.2s ease;
    }

    .nav-list a:hover {
        background: rgba(255, 255, 255, 0.1);
    }

    /* 导航遮罩层 */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 30;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .nav-overlay.is-active {
        opacity: 1;
        visibility: visible;
    }

    /* 防止页面滚动 */
    .nav-open {
        overflow: hidden;
        position: fixed;
        width: 100%;
    }

    /* 调整头部高度 */
    .site-header {
        height: 70px;
    }

    .header-inner {
        height: 60px;
        padding: 0 16px;
    }

    .logo img {
        height: 48px;
    }

    .logo .logo-text {
        height: 28px;
        margin-left: 16px;
    }

    .header-actions {
        display: none;
    }
}

/* 平板 */
@media (max-width: 992px) {
    .site-header {
        height: 70px;
    }

    .nav-list {
        -ms-flex-pack: start;
        justify-content: flex-start;
        -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    }

    .nav-list a {
        padding: 12px 14px;
        font-size: 15px;
    }

    /* 轮播图响应式调整 */
    .hero-slide {
        height: 450px;
    }



    .hero-caption .eyebrow {
        font-size: 18px;
        margin-bottom: 16px;
    }

    .hero-caption h2,
    .hero-caption p {
        font-size: 34px;
        line-height: 42px;
    }



    /* 轮播箭头 */
    .slick-arrow.hero-prev,
    .slick-arrow.hero-next {
        display: none;
    }





    /* 区块间距 */
    .section {
        padding: 32px 0 48px;
    }
}

/* 小平板和手机 */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
        width: 100%;
    }

    .site-header {
        height: 60px;
    }

    .header-inner {
        height: 60px;
        padding: 0 16px;
    }

    .logo img {
        height: 40px;
    }

    .logo .logo-text {
        height: 24px;
        margin-left: 12px;
    }

    .header-actions {
        display: none;
    }

    /* 轮播图响应式调整 */
    .hero-slide {
        height: 320px;
    }

    /* 轮播图 */


    .hero-caption {

        top: 46%;
        max-width: calc(100% - 32px);
    }

    .hero-caption .eyebrow {
        font-size: 14px;
        margin-bottom: 12px;
    }

    .hero-caption h2,
    .hero-caption p {
        font-size: 22px;
        line-height: 30px;
    }



    /* 轮播控制 */
    .slick-arrow.hero-prev,
    .slick-arrow.hero-next {
        width: 40px;
        height: 40px;
        margin-top: 12px;
    }

    .slick-arrow.hero-prev {
        left: 8px;
    }

    .slick-arrow.hero-next {
        right: 8px;
    }

    /* 分页器 */
    .hero-slider .slick-dots {
        bottom: 20px;
    }

    .hero-slider .slick-dots button {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }



    /* 区块标题 */
    .section-head {
        margin-bottom: 24px;
    }

    .title-wrap h3 {
        font-size: 24px;
    }

    .more {
        font-size: 14px;
        padding: 8px 16px;
    }


    /* 区块间距 */
    .section {
        padding: 24px 0 36px;
    }

    /* 底部版权 */
    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 .btm_bottom .fo_cm .p_min {

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

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

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

    .brand-name {
        height: 24px;
    }

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


/* 小手机 */
@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }

    .site-header {
        height: 60px;
    }

    .header-inner {
        height: 50px;
        padding: 0 12px;
    }

    .logo img {
        height: 32px;
    }

    .logo .logo-text {
        height: 20px;
        margin-left: 8px;
    }

    /* 移动端导航 */
    .site-nav {
        width: 60%;

    }

    .nav-list {
        padding: 60px 0 20px;
    }

    .nav-list a {
        padding: 16px 20px;
        font-size: 15px;
    }

    .nav-toggle {
        right: 12px;
        margin-top: -20px;
    }

    .slick-arrow.hero-next,
    .slick-arrow.hero-prev {
        display: none !important;
    }

    .hero-caption {
        left: 40px;
    }


    /* 区块标题 */
    .section-head {
        margin-bottom: 20px;
    }

    .title-wrap h3 {
        font-size: 20px;
    }

    /* 区块间距 */
    .section {
        padding: 20px 0 28px;
    }
}

@media (max-width: 560px) {

    /* 隐藏原来的查看更多按钮 */
    .section-head .more {
        display: none;
    }

    /* 标题组居中 */
    .section-head {
        -ms-flex-pack: center;
        justify-content: center;
    }

    .news-large .meta {
        padding: 10px;
    }

    .news-large .meta .title {
        word-break: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}

/* 超小屏幕 */
@media (max-width: 360px) {
    .container {
        padding: 0 8px;
    }

    .hero-caption h2,
    .hero-caption .eyebrow,
    .hero-caption p {
        font-size: 16px;
        line-height: 22px;
        font-weight: 400;
    }


    .notice-carousel-wrap {
        padding: 0 24px;
    }
}



/* 高DPI屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {

    .logo img,
    .logo .logo-text {
        image-rendering: -webkit-optimize-contrast;
    }
}


/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    right: 22px;
    bottom: 28px;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #004e8f;
    color: #fff;
    z-index: 50;
    cursor: pointer;
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.24);
    opacity: 0;
    visibility: hidden;
    -webkit-transition: opacity 0.25s ease, visibility 0.25s ease, -webkit-transform 0.25s ease;
    -ms-transition: opacity 0.25s ease, visibility 0.25s ease, -ms-transform 0.25s ease;
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
}

.back-to-top:before {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 10px;
    height: 10px;
    margin-left: -5px;
    margin-top: -2px;
    border-left: 2px solid #fff;
    border-top: 2px solid #fff;
    -webkit-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    -webkit-transform: translateY(0);
    -ms-transform: translateY(0);
    transform: translateY(0);
}

.back-to-top:hover {
    background: #0b5fa7;
}

/* 头部：滚动收缩态 */
.site-header.is-condensed {
    background-color: #033d82;
}

/* ========== 按钮系统增强 ========== */
.btn {
    display: inline-block;
    padding: 8px 34px;
    border: 1px solid #fff;
    color: #fff;
    border-radius: 34px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    -webkit-transition: all 0.3s ease;
    -ms-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.btn:hover {
    -webkit-transform: translateY(-2px);
    -ms-transform: translateY(-2px);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* ========== 优化动画性能 ========== */
.hero-slide {
    -webkit-transition: -webkit-transform 0.5s ease;
    -ms-transition: -ms-transform 0.5s ease;
    transition: transform 0.5s ease;
}

.hero-slide:hover {
    -webkit-transform: scale(1.02);
    -ms-transform: scale(1.02);
    transform: scale(1.02);
}

/* ========== 响应式动画优化 ========== */
@media (max-width: 992px) {

    .reveal-on-scroll,
    .reveal-on-scroll-left,
    .reveal-on-scroll-right {
        opacity: 1 !important;
        -webkit-transform: none !important;
        -ms-transform: none !important;
        transform: none !important;
    }

    .hover-lift:hover,
    .news-card:hover {
        -webkit-transform: none !important;
        -ms-transform: none !important;
        transform: none !important;
    }
}

/* 移动端导航按钮 */
.nav-toggle {
    display: none;
    position: absolute;
    right: 16px;
    top: 50%;
    margin-top: -22px;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 101;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    position: absolute;
    left: 10px;
    transition: all 0.3s ease;
}

.nav-toggle span:nth-child(1) {
    top: 14px;
}

.nav-toggle span:nth-child(2) {
    top: 21px;
}

.nav-toggle span:nth-child(3) {
    top: 28px;
}

.nav-toggle.is-active span:nth-child(1) {
    top: 21px;
    transform: rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-active span:nth-child(3) {
    top: 21px;
    transform: rotate(-45deg);
}

/* 移动端导航遮罩 */
.nav-open {
    overflow: hidden;
}

/* 栏目页头部图片样式 */
.section-header {
    position: relative;
    margin-bottom: 0;
    margin-top: 160px;
    /* 向下移动，避开顶部导航 */
}

.header-gradient {
    position: relative;
    height: 300px;
    background: linear-gradient(135deg,
            #667eea 0%,
            #764ba2 25%,
            #f093fb 50%,
            #f5576c 75%,
            #4facfe 100%);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-content {
    text-align: center;
    color: #fff;
    padding: 40px 20px;
    position: relative;
    z-index: 10;
}

.section-header .title-wrap h1 {
    color: #fff;
    font-size: 36px;
    font-weight: 600;
    margin: 0 0 15px 0;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5), 0 0 16px rgba(0, 0, 0, 0.3);
}

.section-header .title-wrap h1 .cn {
    display: block;
    font-size: 32px;
    margin-bottom: 5px;
}

.section-header .title-wrap .sub-en {
    margin-top: 10px;
}

.section-header .title-wrap .sub-en .bar {
    background-color: rgba(255, 255, 255, 0.8);
}

.section-header .title-wrap .sub-en .en {
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
    font-weight: 400;
    letter-spacing: 2px;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.section-header .breadcrumb {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 15px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.section-header .breadcrumb a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: color 0.3s ease;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.section-header .breadcrumb a:hover {
    color: #fff;
    text-decoration: underline;
}

.section-header .breadcrumb .current {
    color: rgba(255, 255, 255, 0.6);
}

/* 头部装饰图形 */
.header-graphics {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 1;
}

.graphic-element {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.element-1 {
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.element-2 {
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.element-3 {
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
    top: 20%;
    right: 40%;
    animation-delay: 4s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

/* 栏目页样式 */
.main-content {
    padding: 40px 0;
    min-height: 60vh;
    padding-top: 30vh;
}

.main-content .section-head {
    margin-bottom: 40px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 20px;
}

.main-content .section-head h1 {
    font-size: 32px;
    font-weight: 600;
    color: #033d82;
    margin: 0;
    line-height: 1.2;
}

.main-content .section-head h1 .cn {
    display: block;
    font-size: 28px;
}

.main-content .section-head .sub-en {
    margin-top: 8px;
}

.main-content .section-head .sub-en .bar {
    background-color: #033d82;
}

.main-content .section-head .sub-en .en {
    color: #666;
    font-size: 14px;
    font-weight: 400;
}

/* 面包屑导航 */
.breadcrumb {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
}

.breadcrumb a {
    color: #033d82;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb .current {
    color: #999;
}

/* 栏目内容区域 */
.section-content {
    margin-top: 30px;
}

.content-list {
    max-width: 100%;
}

.section-intro {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #f8f9fa;
    border-left: 4px solid #033d82;
    border-radius: 4px;
}

.section-intro p {
    margin: 0;
    font-size: 16px;
    line-height: 1.6;
    color: #555;
}

/* 子栏目导航样式 */
.sub-nav {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #fff;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.sub-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.sub-nav-list li {
    margin: 0;
}

.sub-nav-list a {
    display: block;
    padding: 8px 16px;
    color: #666;
    font-size: 18px;
    text-decoration: none;
    border-radius: 20px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.sub-nav-list a:hover {
    color: #033d82;
    background-color: #f8f9fa;
    border-color: #033d82;
}

.sub-nav-list a.active {
    color: #fff;
    background-color: #033d82;
    border-color: #033d82;
}

/* 新闻子栏目容器 */
.news-sections {
    position: relative;
}

/* 文章列表样式 */
.article-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.article-item {
    margin-bottom: 30px;
    padding: 25px;
    background-color: #fff;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.article-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: #033d82;
    transform: translateY(-2px);
}

.article-meta {
    margin-bottom: 15px;
}

.article-title {
    font-size: 20px;
    font-weight: 600;
    color: #033d82;
    text-decoration: none;
    line-height: 1.4;
    display: block;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}



.article-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: #999;
    margin-top: 8px;
}

.article-info .date {
    color: #666;
}


.article-excerpt {
    margin: 0;
}

.article-excerpt p {
    font-size: 15px;
    line-height: 1.6;
    color: #555;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}


/* 响应式设计 */
@media screen and (max-width: 768px) {
    .main-content .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .main-content .section-head h1 {
        font-size: 24px;
    }

    .main-content .section-head h1 .cn {
        font-size: 20px;
    }

    .article-item {
        padding: 20px;
        margin-bottom: 20px;
    }

    .article-title {
        font-size: 18px;
    }

    .sub-nav-list a {
        font-size: 15px;
        padding: 6px 14px;
    }

    .article-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .pagination {
        gap: 5px;
    }

    .page-btn,
    .page-number {
        padding: 6px 12px;
        font-size: 13px;
        min-width: 32px;
        height: 32px;
    }
}

@media screen and (max-width: 480px) {


    .main-content .section-head h1 {
        font-size: 20px;
    }

    .main-content .section-head h1 .cn {
        font-size: 18px;
    }

    .article-item {
        padding: 15px;
    }

    .article-title {
        font-size: 16px;
    }

    .sub-nav-list a {
        font-size: 14px;
        padding: 5px 12px;
    }

    .section-intro {
        padding: 15px;
    }

    .section-intro p {
        font-size: 14px;
    }
}



/* 头部图片响应式设计 */
@media screen and (max-width: 768px) {
    .section-header {
        margin-top: 60px;
        /* 移动端固定导航，减少margin */
    }

    .header-gradient {
        height: 250px;
    }

    .section-header .title-wrap h1 {
        font-size: 28px;
    }

    .section-header .title-wrap h1 .cn {
        font-size: 24px;
    }

    .section-header .title-wrap .sub-en .en {
        font-size: 14px;
        letter-spacing: 1px;
    }

    .header-content {
        padding: 30px 15px;
    }
}

@media screen and (max-width: 480px) {
    .section-header {
        margin-top: 50px;
        /* 手机端固定导航，最小margin */
    }

    .header-gradient {
        height: 200px;
    }

    .section-header .title-wrap h1 {
        font-size: 24px;
    }

    .section-header .title-wrap h1 .cn {
        font-size: 20px;
    }

    .section-header .title-wrap .sub-en .en {
        font-size: 12px;
        letter-spacing: 0.5px;
    }

    .header-content {
        padding: 20px 10px;
    }

    .section-header .breadcrumb {
        font-size: 12px;
        margin-top: 10px;
    }
}

/* 移动端栏目页样式优化 */
@media screen and (max-width: 1200px) {
    .main-content {
        padding: 0;
    }

    .nav-toggle {
        display: block;
    }

    .section-header {
        margin-top: 80px;
        /* 固定导航后，减少margin */
    }

    /* 确保body有足够的顶部间距 */
    body {
        padding-top: 80px;
    }
}