/* ===== 全局样式重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", "微软雅黑", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    line-height: 24px;
    color: #333;
    background: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
}

a:hover, a:focus {
    text-decoration: none;
    color: #1c318a;
}

ul, ol {
    list-style: none;
}

img {
    border: none;
    vertical-align: middle;
    max-width: 100%;
}

.clear {
    clear: both;
}

.container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* ===== 顶部欢迎栏 ===== */
.topper {
    width: 100%;
    position: relative;
    z-index: 10;
}

.top {
    border-top: 3px solid #2a4092;
    background: #1c318a;
    height: auto;
    overflow: hidden;
    position: relative;
    z-index: 11;
}

.top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 30px;
    line-height: 30px;
}

.welcome {
    color: #ffffff;
    font-size: 14px;
}

.top_tel {
    color: #f5faf5;
    font-size: 14px;
}

.top_tel a {
    color: #ffffff;
    margin: 0 5px;
}

.top_tel a:hover {
    color: #ffffff;
    opacity: 0.8;
}

/* ===== 页眉导航 ===== */
.header {
    width: 100%;
    height: 78px;
    background: #fff;
    box-shadow: 0px 2px 10px 3px rgba(30, 19, 15, 0.1);
    position: relative;
    z-index: 10;
    transition: 400ms;
}

.header .container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 78px;
}

.logo {
    width: auto;
    min-width: 340px;
    height: 78px;
    display: flex;
    align-items: center;
    flex: 0 1 auto;
}

.logo a {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
}

.logo img {
    width: 188px;
    height: 68px;
    object-fit: cover;
    object-position: center;
    flex: 0 0 auto;
}

.header-title {
    font-size: 20px;
    font-weight: bold;
    color: #1c318a;
    margin-left: 14px;
    white-space: nowrap;
}

.nav {
    flex: 1;
    padding: 0 0 0 20px;
    height: 78px;
    display: flex;
    align-items: center;
}

.nav ul {
    display: flex;
    width: 100%;
    justify-content: flex-end;
    gap: 0;
}

.nav ul li {
    position: relative;
    text-align: center;
}

.nav ul li a {
    display: block;
    line-height: 78px;
    height: 78px;
    padding: 0 16px;
    overflow: hidden;
    position: relative;
    transition: 400ms;
    color: #333;
    font-size: 16px;
}

.nav ul li a:before {
    content: "";
    width: 1px;
    height: 16px;
    background: #e6e6e6;
    position: absolute;
    right: 0px;
    top: 50%;
    margin-top: -8px;
}

.nav ul li:last-child a:before {
    display: none;
}

.nav ul li a:after {
    content: "";
    width: 30px;
    height: 3px;
    background: #1c318a;
    position: absolute;
    left: 50%;
    margin-left: -15px;
    bottom: 14px;
    transition: 400ms;
    transform: scale(0, 0);
    -webkit-transform: scale(0, 0);
    -moz-transform: scale(0, 0);
    -ms-transform: scale(0, 0);
}

.nav ul li a:hover,
.nav ul li.on a {
    font-weight: bold;
    color: #1c318a;
}

.nav ul li a:hover:after,
.nav ul li.on a:after {
    transform: scale(1, 1);
    -webkit-transform: scale(1, 1);
    -moz-transform: scale(1, 1);
    -ms-transform: scale(1, 1);
    transition: 400ms;
}

.nav ul li ul {
    width: 100%;
    background: rgba(42, 64, 146, 0.8);
    display: none;
    position: absolute;
    top: 78px;
    left: 0;
    flex-direction: column;
    padding: 10px 0;
}

.nav ul li:hover ul {
    display: block;
}

.nav ul li ul li {
    width: 100%;
    font-size: 14px;
}

.nav ul li ul li a {
    color: #d6ddf9;
    line-height: 40px;
    height: 40px;
    font-weight: normal;
    padding: 0 20px;
}

.nav ul li ul li a:before,
.nav ul li ul li a:after {
    display: none;
}

.nav ul li ul li a:hover {
    color: #fff;
    background: #1c318a;
}

.model-navbtn {
    width: 36px;
    height: 36px;
    padding: 0;
    background: #1c318a;
    position: relative;
    cursor: pointer;
    border: none;
    appearance: none;
    outline: none;
    display: none;
}

.model-navbtn:before {
    content: "☰";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 20px;
}

/* ===== 轮播图 ===== */
#model_banner {
    width: 100%;
    position: relative;
    overflow: hidden;
}

#model_banner .banner {
    width: 100%;
    height: 500px;
    overflow: hidden;
}

#model_banner .banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-slider {
    width: 100%;
    position: relative;
    overflow: hidden;
}

.slider {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
}

.slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.slide.active {
    opacity: 1;
    z-index: 2;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.slide::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.1) 50%, rgba(0, 0, 0, 0) 100%);
}

.caption {
    position: absolute;
    left: 40px;
    bottom: 40px;
    z-index: 3;
    color: #fff;
    max-width: 60%;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.8);
}

.caption h2 {
    margin: 0 0 10px 0;
    font-size: 36px;
    font-weight: 800;
    letter-spacing: 1px;
    color: #fff;
}

.caption h2::after {
    display: none;
}

.caption p {
    margin: 0;
    opacity: 0.95;
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
}

.slider .nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 4;
    width: 50px;
    height: 50px;
    border: 0;
    border-radius: 50%;
    cursor: pointer;
    color: #fff;
    font-size: 32px;
    line-height: 50px;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.slider .nav.prev {
    left: 20px;
}

.slider .nav.next {
    right: 20px;
}

.slider .nav:hover {
    background: rgba(28, 49, 138, 0.6);
    border-color: #1c318a;
}

.dots {
    position: absolute;
    left: 50%;
    bottom: 20px;
    transform: translateX(-50%);
    z-index: 4;
    display: flex;
    gap: 10px;
    padding: 8px 15px;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    width: 30px;
    background: #1c318a;
    border-color: #1c318a;
}

/* ===== 主体内容 ===== */
.model_contant {
    width: 100%;
    padding: 40px 0;
    background: #f7f7f7;
}

.model_leftright {
    background: #f7f7f7;
    position: relative;
}

.model_leftright:after {
    content: "";
    width: 360px;
    background: #fff;
    height: 100%;
    position: absolute;
    right: 0;
    top: 0;
}

#model_contant_main {
    position: relative;
    z-index: 2;
}

.model_leftright_l {
    width: 20.833%;
    height: auto;
    float: left;
    overflow: hidden;
}

.model_leftright_l .l_posnav {
    width: 100%;
    height: 70px;
    line-height: 70px;
    text-align: center;
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    background: #1c318a;
}

.model_leftright_l .cont_nav {
    width: 100%;
    height: auto;
    margin-top: 10px;
    border-top: 1px solid #e6e6e6;
    background: #fff;
}

.model_leftright_l .cont_nav .one .o_li {
    width: 100%;
    height: auto;
    overflow: hidden;
    border-bottom: 1px solid #e6e6e6;
}

.model_leftright_l .cont_nav .one .o_li a {
    display: block;
    padding: 0 5%;
    height: 60px;
    line-height: 60px;
    font-size: 16px;
    color: #333333;
}

.model_leftright_l .cont_nav .one .o_li a.one_a:hover,
.model_leftright_l .cont_nav .one .o_li a.ez,
.model_leftright_l .cont_nav .one .o_li.on a {
    background: #fff;
    color: #1c318a;
    font-weight: bold;
}

.moder_leftright_r {
    width: 79.167%;
    float: right;
    padding-bottom: 25px;
    padding-left: 3.167%;
    background: #fff;
    position: relative;
    z-index: 2;
    min-height: 600px;
}

.moder_leftright_r .r_posnav {
    width: 100%;
    height: 44px;
    line-height: 44px;
    margin: 23px 0;
}

.moder_leftright_r .r_posnav p {
    width: auto;
    border-bottom: 4px solid #1c318a;
    font-size: 20px;
    font-weight: bold;
    color: #333333;
    display: inline-block;
    padding-bottom: 5px;
}

.moder_leftright_r .r_posnav span {
    float: right;
    color: #808080;
    font-size: 14px;
}

.moder_leftright_r .r_posnav span a {
    color: #808080;
    margin: 0 3px;
}

.moder_leftright_r .r_posnav span a:hover {
    color: #1c318a;
}

/* ===== 内容区域 ===== */
.intro,
.research {
    background: #fff;
    padding: 40px;
    margin-bottom: 30px;
}

h2 {
    font-size: 30px;
    font-weight: bold;
    color: #1c318a;
    line-height: 40px;
    height: 40px;
    overflow: hidden;
    margin-bottom: 30px;
    text-align: center;
    position: relative;
    padding-bottom: 20px;
}

h2:after {
    content: "";
    width: 30px;
    height: 3px;
    background: #1c318a;
    position: absolute;
    bottom: 0;
    left: 50%;
    margin-left: -15px;
}

.sy_1 {
    background: #fafafa;
    padding: 30px;
    margin-bottom: 30px;
    border-left: 4px solid #1c318a;
}

.sy_1_title {
    font-size: 22px;
    font-weight: bold;
    color: #1c318a;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e6e6e6;
}

.sy_1_info {
    font-size: 16px;
    line-height: 30px;
    color: #333;
    margin-bottom: 15px;
    text-align: justify;
}

.sy_name {
    font-size: 20px;
    font-weight: bold;
    color: #1c318a;
    text-align: center;
    margin: 30px 0 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e6e6e6;
}

.sy_2_info {
    font-size: 16px;
    line-height: 28px;
    color: #333;
    margin-top: 10px;
    text-align: justify;
}

.sy_3_info {
    font-size: 16px;
    line-height: 28px;
    color: #333;
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
}

.sy_3_info:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #1c318a;
    font-weight: bold;
}

.sy_3_info:hover {
    color: #1c318a;
    padding-left: 25px;
}

.sec_two {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    margin-top: 20px;
}

.sec_two_left,
.sec_two_right {
    flex: 1;
    background: #fafafa;
    padding: 25px;
    border: 1px solid #e6e6e6;
}

.sec_two_left:hover,
.sec_two_right:hover {
    border-color: #1c318a;
    box-shadow: 0 2px 10px rgba(28, 49, 138, 0.1);
}

.sy_4_info {
    font-size: 16px;
    line-height: 2.2;
    color: #333;
    list-style: none;
    padding-left: 0;
}

.sy_4_info li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    transition: all 0.3s ease;
}

.sy_4_info li:before {
    content: "▸";
    position: absolute;
    left: 0;
    color: #1c318a;
    font-weight: bold;
}

.sy_4_info li:hover {
    color: #1c318a;
    padding-left: 30px;
}

.sy_2_title {
    font-size: 20px;
    font-weight: bold;
    color: #1c318a;
    text-align: center;
    margin: 25px 0 15px;
}

.sy_5_info {
    font-size: 16px;
    line-height: 28px;
    color: #333;
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
}

.sy_5_info:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #1c318a;
    font-weight: bold;
}

.sy_5_info:hover {
    color: #1c318a;
    padding-left: 25px;
}

/* ===== 图片展示 ===== */
.image-kyhj1,
.image-kyhj2 {
    display: flex;
    justify-content: space-between;
    gap: 25px;
    padding: 25px 0;
    flex-wrap: wrap;
}

.image-item-kyhj,
.image-item-kyhj-1,
.image-item-kyhj-2,
.image-item-kyhj-3 {
    flex: 1;
    min-width: 200px;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    transition: all 0.4s ease;
}

.image-item-kyhj img,
.image-item-kyhj-1 img,
.image-item-kyhj-2 img,
.image-item-kyhj-3 img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    object-fit: cover;
    transition: all 0.4s ease;
    border: 2px solid #e6e6e6;
}

.image-item-kyhj:hover,
.image-item-kyhj-1:hover,
.image-item-kyhj-2:hover,
.image-item-kyhj-3:hover {
    transform: translateY(-5px);
}

.image-item-kyhj:hover img,
.image-item-kyhj-1:hover img,
.image-item-kyhj-2:hover img,
.image-item-kyhj-3:hover img {
    border-color: #1c318a;
    box-shadow: 0 5px 20px rgba(28, 49, 138, 0.2);
}

.image-caption-kyhj {
    margin-top: 12px;
    font-size: 16px;
    color: #666;
    transition: all 0.3s ease;
}

.image-item-kyhj:hover .image-caption-kyhj,
.image-item-kyhj-1:hover .image-caption-kyhj,
.image-item-kyhj-2:hover .image-caption-kyhj,
.image-item-kyhj-3:hover .image-caption-kyhj {
    color: #1c318a;
    font-weight: bold;
}

.call {
    font-size: 16px;
    color: #333;
    margin: 15px 0;
    padding: 15px;
    background: #fafafa;
    border-left: 4px solid #1c318a;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.call:hover {
    background: #f0f0f0;
    border-left-width: 6px;
}

.call strong {
    color: #1c318a;
    font-weight: 600;
}

/* ===== 页脚 ===== */
.footer {
    width: 100%;
    height: auto;
    overflow: hidden;
    background: #454b4d;
    padding: 22px 0;
    min-height: 124px;
}

.footer .container {
    position: relative;
}

.foot_left {
    width: 100%;
    height: auto;
    overflow: hidden;
    float: left;
    line-height: 24px;
}

.contact {
    color: #fff;
    margin: 6px 0 0;
    font-size: 14px;
}

.copyright {
    color: #fff;
    font-size: 14px;
}

.copyright a {
    color: #9ca3a6;
    transition: 400ms;
}

.copyright a:hover {
    color: #fff;
}

.m-link1 {
    padding: 0 0 16px;
}

.m-link1 .item {
    overflow: hidden;
    color: #fff;
}

.m-link1 .item span {
    float: left;
    font-size: 16px;
    margin-right: 18px;
    font-weight: 600;
    color: #fff;
}

.ul-link1 {
    overflow: hidden;
}

.ul-link1 li {
    float: left;
}

.ul-link1 li a {
    display: block;
    margin-right: 20px;
    font-size: 14px;
    color: #fff;
    height: 21px;
    line-height: 21px;
}

.ul-link1 li a:hover {
    opacity: 0.8;
}

.footer-row {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    align-items: baseline;
    width: 100%;
    margin-bottom: 9px;
    color: #fff;
    line-height: 24px;
}

.footer-label {
    padding-right: 20px;
    font-weight: 600;
    white-space: nowrap;
}

.footer-links {
    margin-bottom: 12px;
}

.footer-links .ul-link1 {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 6px 28px;
    overflow: visible;
}

.footer-links .ul-link1 li {
    float: none;
}

.footer-links .ul-link1 li a {
    height: auto;
    margin-right: 0;
    line-height: 24px;
}

.footer-row.contact,
.footer-row.copyright {
    margin-top: 0;
    color: #fff;
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    background: #1c318a;
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 5px 20px rgba(28, 49, 138, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 8px 30px rgba(28, 49, 138, 0.6);
    background: #005baa;
}

/* ===== 工具类 ===== */
.hidden-xs {
    display: block;
}

@media (max-width: 991px) {
    .hidden-xs {
        display: none !important;
    }
}

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
    .container {
        width: 100%;
        padding: 0 15px;
    }
    
    .model_leftright:after {
        display: none;
    }
    
    .model_leftright_l {
        width: 25%;
    }
    
    .moder_leftright_r {
        width: 75%;
        padding-left: 2%;
    }
}

@media (max-width: 991px) {
    .top {
        display: none;
    }
    
    .header {
        height: auto;
        position: fixed;
        top: 0;
        width: 100%;
        z-index: 1000;
    }
    
    .header .container {
        flex-wrap: wrap;
        height: auto;
        padding: 10px 15px;
    }
    
    .logo {
        width: auto;
        min-width: 0;
        height: 60px;
    }

    .logo img {
        width: 136px;
        height: 56px;
    }
    
    .header-title {
        font-size: 16px;
        margin-left: 10px;
    }
    
    .nav {
        display: none;
    }
    
    .model-navbtn {
        display: block;
    }
    
    #model_banner .banner,
    .slider {
        height: 300px;
    }
    
    .model_contant {
        padding-top: 80px;
    }
    
    .model_leftright_l {
        display: none;
    }
    
    .moder_leftright_r {
        width: 100%;
        padding-left: 0;
    }
    
    .intro,
    .research {
        padding: 20px;
    }
    
    .sec_two {
        flex-direction: column;
    }
    
    .image-kyhj1,
    .image-kyhj2 {
        flex-direction: column;
    }
    
    .foot_left {
        width: 100%;
    }
}

@media (max-width: 767px) {
    .header-title {
        font-size: 14px;
    }
    
    h2 {
        font-size: 24px;
    }
    
    .sy_1 {
        padding: 20px;
    }
    
    .caption h2 {
        font-size: 24px;
    }
    
    .caption p {
        font-size: 14px;
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 30px;
        right: 30px;
        font-size: 20px;
    }
}

/* ===== 首页样式 ===== */
.home-intro {
    padding: 60px 0;
    background: linear-gradient(135deg, #f7f7f7 0%, #ffffff 100%);
}

.intro-content {
    text-align: center;
    margin-bottom: 60px;
}

.intro-content h2 {
    font-size: 36px;
    color: #1c318a;
    margin-bottom: 30px;
    position: relative;
    display: inline-block;
}

.intro-content h2:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #1c318a, #005baa);
    border-radius: 2px;
}

.intro-text {
    max-width: 900px;
    margin: 0 auto 40px;
    text-align: left;
}

.intro-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
}

.intro-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, #1c318a, #005baa);
    color: #fff;
    box-shadow: 0 4px 15px rgba(28, 49, 138, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(28, 49, 138, 0.4);
    background: linear-gradient(135deg, #005baa, #1c318a);
}

.btn-secondary {
    background: #fff;
    color: #1c318a;
    border-color: #1c318a;
}

.btn-secondary:hover {
    background: #1c318a;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(28, 49, 138, 0.3);
}

.research-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.research-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    border: 2px solid #f0f0f0;
    position: relative;
    overflow: hidden;
}

.card-icon {
    width: 52px;
    height: 52px;
    line-height: 52px;
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.08em;
    background: #1c318a;
    border-radius: 50%;
    margin-bottom: 20px;
    display: inline-block;
}

.research-card h3 {
    font-size: 20px;
    color: #1c318a;
    margin-bottom: 15px;
    font-weight: 700;
}

.research-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* ===== 首页动态、进展与成员概览 ===== */
.home-updates {
    padding: 70px 0;
    background: #f3f6fb;
}

.home-feed-grid {
    display: grid;
    grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.65fr);
    gap: 28px;
    margin-bottom: 28px;
}

.home-module {
    padding: 34px;
    background: #fff;
    border: 1px solid #e0e6f0;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(28, 49, 138, 0.05);
}

.home-module-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 25px;
    padding-bottom: 16px;
    border-bottom: 2px solid #1c318a;
}

.home-module-heading .section-kicker {
    margin-bottom: 5px;
}

.home-module-heading h2 {
    height: auto;
    margin: 0;
    padding: 0;
    color: #18254d;
    font-size: 28px;
    text-align: left;
}

.home-module-heading h2::after {
    display: none;
}

.module-more {
    flex: 0 0 auto;
    padding-bottom: 3px;
    color: #1c318a;
    font-size: 14px;
    font-weight: 700;
    border-bottom: 1px solid currentColor;
}

.module-more::after {
    content: ' →';
}

.module-more:hover {
    color: #005baa;
}

.news-placeholder {
    display: flex;
    align-items: center;
    gap: 20px;
    min-height: 226px;
    padding: 26px;
    background: linear-gradient(145deg, #edf2fb, #f9fbff);
    border-radius: 10px;
}

.news-mark {
    display: grid;
    flex: 0 0 58px;
    width: 58px;
    height: 58px;
    place-items: center;
    color: #fff;
    font-size: 24px;
    font-weight: 800;
    background: #1c318a;
    border-radius: 50%;
}

.news-placeholder h3 {
    margin-bottom: 10px;
    color: #223251;
    font-size: 19px;
}

.news-placeholder p {
    color: #687285;
    font-size: 14px;
    line-height: 1.8;
}

.news-carousel {
    min-width: 0;
}

.news-carousel-viewport {
    position: relative;
    height: 260px;
    overflow: hidden;
    background: #edf2fb;
    border-radius: 12px;
}

.news-carousel-slide {
    position: absolute;
    inset: 0;
    display: grid;
    opacity: 0;
    pointer-events: none;
    transition: opacity 280ms ease;
}

.news-carousel-slide.is-active {
    z-index: 1;
    opacity: 1;
    pointer-events: auto;
}

.news-carousel-slide::after {
    position: absolute;
    inset: 0;
    content: '';
    background: linear-gradient(180deg, rgba(8, 22, 59, 0.02) 28%, rgba(8, 22, 59, 0.72) 100%);
}

.news-carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.news-carousel-caption {
    position: absolute;
    right: 22px;
    bottom: 19px;
    left: 22px;
    z-index: 1;
    color: #fff;
}

.news-carousel-caption h3 {
    margin: 0 0 4px;
    color: #fff;
    font-size: 18px;
    font-weight: 750;
    line-height: 1.35;
}

.news-carousel-caption p {
    margin: 0;
    color: rgba(255, 255, 255, 0.88);
    font-size: 13px;
    line-height: 1.6;
}

.news-carousel-control {
    position: absolute;
    top: 50%;
    z-index: 2;
    display: grid;
    width: 34px;
    height: 34px;
    padding: 0;
    color: #fff;
    font-size: 27px;
    line-height: 1;
    place-items: center;
    background: rgba(10, 25, 62, 0.34);
    border: 1px solid rgba(255, 255, 255, 0.42);
    border-radius: 50%;
    cursor: pointer;
    transform: translateY(-50%);
    transition: background-color 160ms ease;
}

.news-carousel-prev { left: 12px; }
.news-carousel-next { right: 12px; }

.news-carousel-dots {
    display: flex;
    justify-content: center;
    gap: 0;
    padding-top: 4px;
}

.news-carousel-dots button {
    position: relative;
    width: 24px;
    height: 24px;
    padding: 0;
    background: transparent;
    border: 0;
    cursor: pointer;
    transition: transform 120ms cubic-bezier(0.23, 1, 0.32, 1);
}

.news-carousel-dots button::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 7px;
    height: 7px;
    background: #c2cada;
    border-radius: 999px;
    transform: translate(-50%, -50%);
    transition: width 180ms cubic-bezier(0.23, 1, 0.32, 1), background-color 180ms ease;
}

.news-carousel-dots button.is-active {
    width: 24px;
    background: transparent;
}

.news-carousel-dots button.is-active::before {
    width: 20px;
    background: #1c318a;
}

.news-carousel-dots button:active {
    transform: scale(0.92);
}

.progress-list {
    display: grid;
}

.progress-item {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 18px;
    padding: 17px 0;
    border-bottom: 1px solid #e5e9f1;
}

.progress-item:first-child {
    padding-top: 0;
}

.progress-item:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.progress-item time {
    color: #1c318a;
    font-size: 15px;
    font-weight: 800;
}

.progress-item h3 {
    margin-bottom: 6px;
    font-size: 15px;
    line-height: 1.55;
}

.progress-item h3 a {
    color: #283550;
}

.progress-item h3 a:hover {
    color: #1c318a;
    text-decoration: underline;
}

.progress-item p {
    color: #7a8290;
    font-size: 12px;
    line-height: 1.5;
}

.member-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.member-stat {
    position: relative;
    display: flex;
    min-height: 150px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 7px;
    padding: 24px;
    overflow: hidden;
    color: #283550;
    background: #f7f9fd;
    border: 1px solid #dfe5f0;
    border-radius: 10px;
}

.member-stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: #1c318a;
}

.member-stat strong {
    color: #1c318a;
    font-size: 40px;
    line-height: 1;
}

.member-stat span {
    font-size: 16px;
    font-weight: 700;
}

.member-stat small {
    color: #7b8493;
    font-size: 12px;
}

.members-module {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    padding: 42px 46px;
    color: #fff;
    background-image:
        linear-gradient(110deg, rgba(22, 43, 114, 0.94), rgba(49, 65, 155, 0.83)),
        url("../images/team/decor/team-members-background.jpg");
    background-position: center;
    background-size: cover;
    border: 0;
    box-shadow: 0 16px 38px rgba(17, 37, 102, 0.2);
}

.members-module .home-module-heading {
    border-bottom-color: rgba(255, 255, 255, 0.48);
}

.members-module .home-module-heading .section-kicker {
    color: #ffe06b;
}

.members-module .home-module-heading h2,
.members-module .module-more {
    color: #fff;
}

.members-module .module-more:hover {
    color: #ffe06b;
}

.members-module .member-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
}

.members-module .member-stat {
    min-height: 142px;
    flex-direction: row;
    gap: 20px;
    padding: 24px 34px;
    color: #fff;
    background: transparent;
    border: 0;
    border-radius: 0;
}

.members-module .member-stat::before {
    display: none;
}

.members-module .member-stat::after {
    content: "";
    position: absolute;
    top: 25%;
    right: 0;
    width: 1px;
    height: 50%;
    background: rgba(255, 255, 255, 0.3);
}

.members-module .member-stat:last-child::after {
    display: none;
}

.members-module .member-stat-icon {
    display: block;
    flex: 0 0 60px;
    width: 60px;
    height: 60px;
    background-image: url("../images/team/decor/team-member-icons.png");
    background-repeat: no-repeat;
    background-size: 300% auto;
}

.members-module .member-stat-icon-graduate {
    background-position: left center;
}

.members-module .member-stat-icon-undergraduate {
    background-position: center;
}

.members-module .member-stat-icon-alumni {
    background-position: right center;
}

.member-stat-copy {
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
}

.members-module .member-stat-copy strong {
    display: flex;
    align-items: baseline;
    gap: 3px;
    color: #ffe06b;
    font-size: 40px;
}

.members-module .member-stat-copy strong small {
    color: inherit;
    font-size: 14px;
    font-weight: 700;
}

.members-module .member-stat-copy > span {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
}

.page-content {
    padding: 50px 0;
    background: #f7f7f7;
    min-height: 500px;
}

.content-section {
    background: #fff;
    padding: 40px;
    margin-bottom: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.content-section h2 {
    font-size: 28px;
    color: #1c318a;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid #1c318a;
    text-align: left;
}

.content-section h2:after {
    display: none;
}

/* ===== 成员介绍页面 ===== */
.team-page {
    padding: 50px 0;
    background: #f7f7f7;
    min-height: 600px;
}

.team-section {
    margin-bottom: 60px;
}

.section-title {
    height: auto;
    overflow: visible;
    font-size: 32px;
    line-height: 1.25;
    color: #1c318a;
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    padding-bottom: 20px;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #1c318a, #005baa);
    border-radius: 2px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.team-card {
    background: #fff;
    border-radius: 14px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #dfe5f0;
}

.card-content {
    padding: 30px;
    position: relative;
    z-index: 1;
}

.member-photo {
    width: 150px;
    height: 150px;
    margin: 0 auto 25px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid #1c318a;
    position: relative;
    box-shadow: 0 5px 20px rgba(28, 49, 138, 0.2);
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.member-info {
    text-align: center;
}

.member-name {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 10px;
    height: auto;
    padding: 0;
    overflow: visible;
    font-size: 24px;
    font-weight: 700;
    color: #1c318a;
    margin-bottom: 15px;
    text-align: left;
}

.member-name::after {
    display: none;
}

.member-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 15px;
    font-size: 16px;
    color: #666;
}

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

.member-bio {
    font-size: 14px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
    min-height: 50px;
}

.member-contact {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    padding-top: 15px;
    border-top: 1px solid #e6e6e6;
    font-style: normal;
}

.member-contact-links,
.contact-email-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.member-contact .email-reply-note {
    color: #6f7785;
    font-size: 13px;
}

.contact-icon {
    font-size: 16px;
    color: #1c318a;
}

.member-contact a {
    color: #1c318a;
    font-size: 14px;
    transition: color 0.3s ease;
}

.member-contact a:hover {
    color: #005baa;
    text-decoration: underline;
}

.teacher-card {
    grid-column: 1 / -1;
    max-width: 1120px;
    margin: 0 auto;
    border-radius: 14px;
}

.teacher-card .card-content {
    display: grid;
    grid-template-columns: 230px minmax(0, 1fr);
    align-items: start;
    gap: 44px;
    padding: 46px;
}

.teacher-card .member-photo {
    width: 220px;
    height: 285px;
    margin: 0 auto;
    border-radius: 10px;
    box-shadow: 0 12px 28px rgba(28, 49, 138, 0.16);
}

.teacher-card .member-info {
    text-align: left;
}

.teacher-card .member-title {
    justify-content: flex-start;
}

.teacher-sidebar .member-contact {
    justify-content: flex-start;
    margin-top: 22px;
    padding: 20px 4px 0;
}

.teacher-profile-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.profile-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    padding: 8px 14px;
    color: #1c318a;
    font-size: 14px;
    font-weight: 700;
    border: 1px solid #1c318a;
    border-radius: 999px;
}

.profile-link:hover {
    color: #fff;
    background: #1c318a;
}

.teacher-card .member-bio {
    margin-bottom: 26px;
    padding-bottom: 22px;
    border-bottom: 1px solid #e3e7ee;
    font-size: 15px;
}

.profile-detail {
    margin-top: 26px;
    text-align: left;
}

.profile-detail h3 {
    position: relative;
    margin-bottom: 14px;
    padding-left: 14px;
    color: #1c2b4b;
    font-size: 19px;
}

.profile-detail h3::before {
    content: '';
    position: absolute;
    top: 3px;
    bottom: 3px;
    left: 0;
    width: 4px;
    background: #1c318a;
    border-radius: 2px;
}

.profile-detail p,
.profile-list,
.representative-papers ol {
    color: #4f596a;
    font-size: 14px;
    line-height: 1.85;
}

.profile-list,
.representative-papers ol {
    display: grid;
    gap: 9px;
}

.profile-list li,
.representative-papers li {
    position: relative;
    padding-left: 18px;
}

.profile-list li::before,
.representative-papers li::before {
    content: '◆';
    position: absolute;
    top: 0;
    left: 0;
    color: #b6922e;
    font-size: 9px;
}

.project-list,
.representative-papers ol {
    list-style: none;
}

.representative-papers li + li {
    padding-top: 11px;
    border-top: 1px dashed #dce1e9;
}

.representative-papers a {
    color: #1c318a;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.representative-papers strong {
    color: #26334d;
}

.roster-section {
    padding: 34px 38px 38px;
    background: #fff;
    border: 1px solid #e2e7f0;
    border-radius: 14px;
}

.roster-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 28px;
    padding-bottom: 18px;
    border-bottom: 2px solid #1c318a;
}

.roster-heading .section-kicker {
    margin-bottom: 6px;
}

.roster-heading h2 {
    height: auto;
    margin: 0;
    padding: 0;
    color: #18254d;
    font-size: 28px;
    text-align: left;
}

.roster-heading h2::after {
    display: none;
}

.roster-count {
    display: inline-flex;
    align-items: baseline;
    gap: 4px;
    color: #657087;
    white-space: nowrap;
}

.roster-count strong {
    color: #1c318a;
    font-size: 34px;
    line-height: 1;
}

.student-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.student-card {
    overflow: hidden;
    background: #fff;
    border: 1px solid #dfe5f0;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(28, 49, 138, 0.05);
}

.student-avatar {
    display: grid;
    width: 100%;
    aspect-ratio: 4 / 3;
    place-items: center;
    color: #fff;
    font-size: 54px;
    font-weight: 800;
    background: linear-gradient(145deg, #1c318a, #5168af);
}

.student-card:nth-child(3n + 2) .student-avatar {
    background: linear-gradient(145deg, #21477c, #5680ad);
}

.student-card:nth-child(3n) .student-avatar {
    background: linear-gradient(145deg, #35508b, #788bb9);
}

.student-avatar-photo {
    overflow: hidden;
}

.student-avatar-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.student-avatar-photo-top img {
    object-position: center top;
}

.student-avatar-photo-focus img {
    transform: scale(1.8);
    transform-origin: 57% 58%;
}

.student-avatar-photo-yu img {
    transform: scale(1.25);
    transform-origin: center 58%;
}

.student-avatar-song img {
    object-position: 69% 41%;
}

.student-avatar-luo img {
    object-position: 50% 38%;
}

.student-avatar-photo-shi img {
    object-position: center 37%;
}

.student-card-body {
    padding: 22px;
}

.student-card h3 {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 7px;
    margin-bottom: 7px;
    color: #1d2c4d;
    font-size: 21px;
}

.name-en {
    color: #1d2c4d;
    font-weight: 800;
}

.name-zh {
    color: #70798a;
    font-size: 0.78em;
    font-weight: 500;
    transform: translateY(-2px);
}

html[lang="en"] .name-zh {
    display: none;
}

.avatar-initials-en {
    display: none;
}

html[lang="en"] .avatar-initials-zh {
    display: none;
}

html[lang="en"] .avatar-initials-en {
    display: inline;
}

.member-name .name-en {
    color: #1f1f1f;
    font-size: 30px;
}

.member-name .name-zh {
    font-size: 21px;
    transform: translateY(-4px);
}

.student-role {
    margin-bottom: 14px;
    color: #1c318a;
    font-size: 14px;
    font-weight: 700;
}

.student-role-with-period {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.student-period {
    color: #6b7483;
    font-weight: 500;
}

.student-graduation {
    margin-bottom: 16px;
    color: #6b7483;
    font-size: 13px;
}

.student-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    min-height: 27px;
}

.student-tags span {
    padding: 5px 9px;
    color: #1c318a;
    font-size: 12px;
    background: #eef2fb;
    border-radius: 999px;
}

.student-tags .student-tag-placeholder {
    color: #778092;
    background: transparent;
    border: 1px dashed #aeb7c7;
}

.alumni-student-grid {
    grid-template-columns: 1fr;
    width: 100%;
    max-width: 350px;
}

.team-link {
    text-align: center;
    margin-top: 30px;
}

/* ===== 五页面信息架构：研究方向、成果与加入我们 ===== */
.section-kicker {
    display: inline-block;
    margin-bottom: 14px;
    color: #1c318a;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.18em;
}

.section-lead {
    max-width: 820px;
    margin: 0 auto;
    color: #566071;
    font-size: 18px;
    line-height: 1.9;
}

.research-overview,
.results-intro {
    margin-bottom: 42px;
    padding: 52px;
    text-align: center;
    background: linear-gradient(145deg, #f6f8fd 0%, #ffffff 70%);
    border: 1px solid #e5e9f2;
    border-radius: 16px;
}

.research-overview h2,
.results-intro h2,
.join-support h2,
.join-details h2 {
    height: auto;
    overflow: visible;
    margin-bottom: 18px;
    padding-bottom: 0;
    color: #18254d;
    line-height: 1.35;
}

.research-overview h2::after,
.results-intro h2::after,
.join-support h2::after,
.join-details h2::after {
    display: none;
}

.direction-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    margin-bottom: 42px;
}

.direction-card {
    min-height: 360px;
    padding: 34px;
    background: #fff;
    border: 1px solid #e2e7f0;
    border-radius: 14px;
}

.direction-number,
.join-number {
    display: block;
    margin-bottom: 36px;
    color: #9aa9d2;
    font-size: 42px;
    font-weight: 700;
    line-height: 1;
}

.direction-card h2,
.join-options h2 {
    height: auto;
    overflow: visible;
    margin-bottom: 18px;
    padding: 0;
    color: #1c318a;
    font-size: 24px;
    line-height: 1.45;
    text-align: left;
}

.direction-card h2::after,
.join-options h2::after {
    display: none;
}

.direction-card p,
.join-options p {
    color: #596273;
    font-size: 15px;
    line-height: 1.85;
}

.direction-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 26px;
}

.direction-tags span,
.publication-meta span {
    padding: 5px 10px;
    color: #1c318a;
    font-size: 12px;
    background: #eef2fb;
    border-radius: 999px;
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    max-width: 720px;
    margin: 38px auto 0;
    border-top: 1px solid #dfe5ef;
}

.result-stats div {
    padding: 26px 16px 0;
}

.result-stats strong,
.result-stats span {
    display: block;
}

.result-stats strong {
    color: #1c318a;
    font-size: 38px;
    line-height: 1.2;
}

.result-stats span {
    margin-top: 6px;
    color: #6b7380;
}

.publication-list {
    display: grid;
    gap: 18px;
}

.publication-card {
    display: grid;
    grid-template-columns: 110px 1fr;
    overflow: hidden;
    background: #fff;
    border: 1px solid #e2e7f0;
    border-radius: 12px;
}

.publication-year {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    font-weight: 700;
    background: #1c318a;
}

.publication-body {
    padding: 28px 32px;
}

.publication-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.publication-body h3 {
    margin-bottom: 10px;
    color: #1d2743;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 20px;
    line-height: 1.5;
}

.publication-body p {
    color: #566071;
    line-height: 1.75;
}

.publication-citation {
    margin-top: 6px;
    font-size: 13px;
}

.project-grid,
.join-options,
.join-details {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.project-grid article,
.join-options article {
    padding: 32px;
    background: #fff;
    border: 1px solid #e2e7f0;
    border-radius: 12px;
}

.project-label {
    display: block;
    margin-bottom: 18px;
    color: #1c318a;
    font-size: 18px;
    font-weight: 700;
}

.project-grid p {
    color: #566071;
    font-size: 16px;
    line-height: 1.9;
}

.join-support {
    margin-bottom: 42px;
}

.join-support > .section-kicker,
.join-support > h2 {
    display: block;
    text-align: center;
}

.join-support-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    margin-top: 30px;
}

.join-support-grid article {
    position: relative;
    min-height: 220px;
    padding: 34px;
    overflow: hidden;
    background: #fff;
    border: 1px solid #e2e7f0;
    border-radius: 14px;
}

.support-number {
    display: block;
    margin-bottom: 26px;
    color: #9aa9d2;
    font-size: 34px;
    font-weight: 700;
    line-height: 1;
}

.join-support-grid h3 {
    margin-bottom: 12px;
    color: #1c318a;
    font-size: 21px;
    line-height: 1.45;
}

.join-support-grid p {
    color: #596273;
    font-size: 15px;
    line-height: 1.85;
}

.join-options {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-bottom: 42px;
}

.join-options article {
    min-height: 310px;
}

.join-admissions {
    margin-bottom: 42px;
    padding: 40px;
    background: #fff;
    border: 1px solid #e2e7f0;
    border-radius: 14px;
}

.join-admissions h2 {
    height: auto;
    margin-bottom: 24px;
    padding: 0;
    color: #18254d;
    line-height: 1.35;
    text-align: left;
}

.join-admissions h2::after {
    display: none;
}

.admissions-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.admissions-list li {
    padding: 18px 20px;
    color: #1c318a;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.55;
    background: #eef2fb;
    border: 1px solid rgba(28, 49, 138, 0.08);
    border-radius: 10px;
}

.admissions-note {
    margin-top: 18px;
    color: #596273;
    font-size: 14px;
    line-height: 1.75;
}

.join-details {
    margin-bottom: 10px;
}

.join-expectations,
.join-contact-card {
    padding: 40px;
    background: #fff;
    border: 1px solid #e2e7f0;
    border-radius: 14px;
}

.join-expectations ul {
    display: grid;
    gap: 16px;
}

.join-expectations li {
    position: relative;
    padding-left: 24px;
    color: #525c6c;
    font-size: 16px;
    line-height: 1.8;
}

.join-expectations li::before {
    content: "";
    position: absolute;
    top: 11px;
    left: 0;
    width: 8px;
    height: 8px;
    background: #1c318a;
    border-radius: 50%;
}

.join-contact-card {
    color: #fff;
    background: #172b68;
    border-color: #172b68;
}

.join-contact-card .section-kicker,
.join-contact-card h2,
.join-contact-card a {
    color: #fff;
}

.join-contact-card dl {
    display: grid;
    gap: 20px;
}

.join-contact-card dl div {
    padding-bottom: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.join-contact-card dt {
    margin-bottom: 5px;
    color: #aebce8;
    font-size: 13px;
}

.join-contact-card .email-heading {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 6px;
}

.join-contact-card dd {
    font-size: 16px;
    line-height: 1.65;
}

.join-contact-card .email-reply-note {
    color: #d9e0f7;
    font-size: 13px;
}

.mail-tip {
    margin-top: 22px;
    color: #d9e0f7;
    font-size: 13px;
    line-height: 1.75;
}

/* ===== 语言切换样式 ===== */
.lang-switch {
    color: #fff;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.lang-switch.active {
    font-weight: bold;
    text-decoration: underline;
}

.lang-switch:hover {
    opacity: 0.8;
}

/* ===== 响应式优化 ===== */
@media (max-width: 991px) {
    .home-feed-grid {
        grid-template-columns: 1fr;
    }

    .member-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .members-module .member-stats {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .members-module .member-stat {
        gap: 12px;
        padding-inline: 18px;
    }

    .members-module .member-stat-icon {
        flex-basis: 50px;
        width: 50px;
        height: 50px;
    }

    .research-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .intro-content h2 {
        font-size: 28px;
    }

    .direction-grid,
    .join-options,
    .join-support-grid {
        grid-template-columns: 1fr;
    }

    .direction-card,
    .join-options article {
        min-height: 0;
    }

    .student-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .alumni-student-grid {
        grid-template-columns: minmax(260px, 1fr);
    }
}

@media (max-width: 767px) {
    .home-updates {
        padding: 46px 0;
    }

    .home-module {
        padding: 26px 22px;
    }

    .members-module {
        padding: 30px 24px;
        background-position: center;
    }

    .members-module .member-stats {
        grid-template-columns: 1fr;
    }

    .members-module .member-stat {
        min-height: 108px;
        justify-content: flex-start;
        padding: 20px 10px;
    }

    .members-module .member-stat::after {
        top: auto;
        right: 0;
        bottom: 0;
        width: 100%;
        height: 1px;
    }

    .home-module-heading h2 {
        font-size: 24px;
    }

    .news-placeholder {
        align-items: flex-start;
        min-height: 0;
        padding: 22px;
    }

    .news-carousel-viewport {
        height: 240px;
    }

    .progress-item {
        grid-template-columns: 52px minmax(0, 1fr);
        gap: 12px;
    }

    .research-cards {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .teacher-card {
        grid-column: 1;
    }

    .teacher-card .card-content {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 30px 22px;
    }

    .teacher-card .member-info {
        text-align: center;
    }

    .teacher-card .member-title,
    .teacher-card .member-contact {
        justify-content: center;
    }

    .teacher-profile-links {
        justify-content: center;
    }

    .teacher-card .member-photo {
        width: 210px;
        height: 275px;
    }

    .roster-section {
        padding: 28px 22px;
    }

    .student-grid,
    .alumni-student-grid {
        grid-template-columns: 1fr;
        max-width: none;
    }

    .roster-heading h2 {
        font-size: 24px;
    }
    
    .intro-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
    }
    
    .content-section {
        padding: 25px;
    }
    
    .content-section h2 {
        font-size: 22px;
    }

    .research-overview,
    .results-intro,
    .join-expectations,
    .join-contact-card {
        padding: 28px 22px;
    }

    .section-lead {
        font-size: 16px;
    }

    .direction-card,
    .join-options article,
    .join-support-grid article {
        padding: 26px 22px;
    }

    .join-details,
    .project-grid,
    .admissions-list {
        grid-template-columns: 1fr;
    }

    .join-admissions {
        padding: 28px 22px;
    }

    .publication-card {
        grid-template-columns: 1fr;
    }

    .publication-year {
        justify-content: flex-start;
        padding: 12px 20px;
        font-size: 18px;
    }

    .publication-body {
        padding: 24px 20px;
    }

    .result-stats {
        gap: 10px;
    }

    .result-stats strong {
        font-size: 30px;
    }

    .result-stats span {
        font-size: 12px;
    }
}

/* ===== 侧边导航（移动端） ===== */
.opacity2 {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0px;
    left: 0px;
    background: rgba(0, 0, 0, 0.5);
    z-index: 20;
    display: none;
}

.model-leftnav {
    width: 70%;
    height: 100%;
    background: #fff;
    position: fixed;
    top: 0px;
    left: 0;
    z-index: 44;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.model-leftnav.page-active {
    transform: translateX(0);
}

.model-leftnav-top {
    padding: 0 5%;
    margin: 0;
    height: 58px;
    overflow: hidden;
    line-height: 58px;
    font-size: 18px;
    font-weight: bold;
    color: #fff;
    background: #1c318a;
    text-align: center;
}

.model-leftnav-main {
    width: 100%;
    height: calc(100% - 58px);
    overflow-y: scroll;
}

.model-leftnav-main .nnav li {
    width: 100%;
    border-bottom: 1px solid #e6e6e6;
}

.model-leftnav-main .nnav li a {
    display: block;
    height: 44px;
    line-height: 44px;
    padding-left: 15px;
    color: #333333;
    font-size: 16px;
}

.model-leftnav-main .nnav li a:hover {
    background: #f5f5f5;
    color: #1c318a;
}

/* 平板及窄桌面仍展示完整一级导航，仅手机使用折叠菜单 */
@media (min-width: 768px) and (max-width: 991px) {
    .header {
        position: relative;
        height: 78px;
    }

    .header .container {
        flex-wrap: nowrap;
        height: 78px;
        padding: 0 15px;
    }

    .logo {
        width: auto;
        min-width: 270px;
        height: 78px;
    }

    .logo img {
        width: 160px;
        height: 62px;
    }

    .header-title {
        font-size: 16px;
        margin-left: 10px;
    }

    .nav {
        display: flex;
        padding-left: 4px;
    }

    .nav ul li a {
        padding: 0 7px;
        font-size: 14px;
    }

    .model-navbtn {
        display: none;
    }
}

/* ===== 论文发表列表 ===== */
.publication-intro,
.publication-year-group {
    max-width: 1100px;
    margin-right: auto;
    margin-left: auto;
}

.publication-intro {
    margin-bottom: 42px;
    padding-bottom: 30px;
    border-bottom: 1px solid #dfe3eb;
}

.publication-intro h1 {
    height: auto;
    margin-bottom: 14px;
    padding: 0;
    color: #1d2743;
    font-size: 36px;
    line-height: 1.3;
    text-align: left;
}

.publication-intro h1::after {
    display: none;
}

.publication-intro p {
    max-width: 820px;
    color: #626773;
    font-size: 17px;
    line-height: 1.8;
}

.publication-year-group {
    margin-bottom: 54px;
}

.publication-year-heading {
    height: auto;
    margin-bottom: 28px;
    padding: 0 0 0 14px;
    color: #1c318a;
    font-size: 30px;
    line-height: 1.2;
    text-align: left;
    border-left: 4px solid #1c318a;
}

.publication-year-heading::after {
    display: none;
}

.publication-list {
    display: block;
}

.publication-entry {
    padding: 0 0 34px;
    margin-bottom: 34px;
    border-bottom: 1px solid #dfe3eb;
}

.publication-entry:last-child {
    margin-bottom: 0;
}

.publication-authors {
    margin-bottom: 8px;
    color: #646873;
    font-size: 17px;
    line-height: 1.65;
}

.publication-title-line {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 8px;
}

.publication-title-line h3 {
    flex: 1;
    margin: 0;
    color: #333743;
    font-size: 21px;
    font-weight: 700;
    line-height: 1.45;
}

.publication-title-line h3 a {
    color: inherit;
    text-decoration: none;
}

.publication-title-line h3 a:hover,
.publication-title-line h3 a:focus {
    color: #1c318a;
    text-decoration: underline;
}

.publication-type {
    flex: 0 0 auto;
    margin-top: 2px;
    padding: 5px 10px;
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    line-height: 1.35;
    background: #128dc8;
    border-radius: 3px;
}

.publication-venue {
    color: #646873;
    font-size: 17px;
    line-height: 1.7;
}

.publication-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 9px;
    margin-top: 8px;
    color: #a0a3a9;
}

.publication-actions a,
.publication-toggle {
    padding: 0;
    color: #858991;
    font-family: inherit;
    font-size: 16px;
    line-height: 1.5;
    text-decoration: underline;
    background: none;
    border: 0;
    cursor: pointer;
}

.publication-actions a:hover,
.publication-actions a:focus,
.publication-toggle:hover,
.publication-toggle:focus,
.publication-toggle.active {
    color: #1c318a;
}

.publication-panel {
    margin-top: 18px;
    padding: 20px 22px;
    color: #505765;
    background: #f5f7fb;
    border-left: 3px solid #1c318a;
}

.publication-panel[hidden] {
    display: none;
}

.publication-panel p {
    font-size: 15px;
    line-height: 1.8;
}

/* ===== 发明专利 ===== */
.patent-section {
    max-width: 1080px;
    margin: 82px auto 18px;
}

.patent-section-heading {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--site-line, #dfe3eb);
}

.patent-section-heading h2 {
    height: auto;
    margin: 8px 0 0;
    padding: 0;
    color: var(--site-ink, #1d2743);
    font-size: clamp(32px, 4vw, 42px);
    line-height: 1.3;
    text-align: left;
}

.patent-section-heading h2::after {
    display: none;
}

.patent-entry {
    --patent-figure-width: 250px;
    --patent-figure-padding: 12px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) var(--patent-figure-width);
    grid-template-rows: auto auto;
    column-gap: 38px;
    row-gap: 14px;
    align-items: start;
    padding: 0 0 30px;
    margin-bottom: 30px;
}

.patent-entry-heading {
    grid-column: 1;
    grid-row: 1;
}

.patent-entry-heading > div {
    min-width: 0;
}

.patent-entry-heading h3 {
    margin: 0 0 10px;
    color: var(--site-ink, #1d2743);
    font-size: 21px;
    font-weight: 730;
    line-height: 1.55;
    letter-spacing: -0.01em;
}

.patent-number {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    color: var(--site-text, #626773);
    font-size: 16px;
    line-height: 1.65;
}

.patent-status {
    display: inline-flex;
    align-items: center;
    padding: 3px 9px;
    color: var(--site-blue, #1c318a);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.4;
    background: var(--site-blue-soft, #edf2ff);
    border: 1px solid rgba(23, 59, 143, 0.12);
    border-radius: 999px;
}

.patent-panel {
    grid-column: 1;
    grid-row: 2;
    position: relative;
    box-sizing: border-box;
    height: 148px;
    margin-top: 0;
    padding: 12px 20px 18px;
    overflow: hidden;
    color: #505765;
    background: #f2f5fb;
    border: 0;
    border-left: 3px solid #1c318a;
    border-radius: 0 12px 12px 0;
}

.patent-panel.is-expanded {
    height: auto;
    padding-bottom: 58px;
}

.patent-panel.is-static {
    padding-bottom: 18px;
}

.patent-abstract {
    max-height: none;
}

.patent-panel:not(.is-expanded):not(.is-static) .patent-abstract {
    height: 100%;
    overflow: hidden;
    -webkit-mask-image: linear-gradient(
        to bottom,
        #000 0%,
        #000 50%,
        rgba(0, 0, 0, 0.96) 60%,
        rgba(0, 0, 0, 0.78) 72%,
        rgba(0, 0, 0, 0.42) 86%,
        transparent 100%
    );
    mask-image: linear-gradient(
        to bottom,
        #000 0%,
        #000 50%,
        rgba(0, 0, 0, 0.96) 60%,
        rgba(0, 0, 0, 0.78) 72%,
        rgba(0, 0, 0, 0.42) 86%,
        transparent 100%
    );
}

.patent-panel:not(.is-expanded):not(.is-static)::after {
    display: none;
}

.patent-preview-fade {
    position: absolute;
    right: 0;
    top: 12px;
    bottom: 12px;
    left: 3px;
    z-index: 2;
    overflow: hidden;
    pointer-events: none;
    opacity: 1;
    transition: opacity 180ms cubic-bezier(0.25, 0.1, 0.25, 1);
}

.patent-preview-fade::after {
    position: absolute;
    inset: 0;
    content: "";
    background: linear-gradient(
        to bottom,
        rgba(242, 245, 251, 0) 0%,
        rgba(242, 245, 251, 0) 58%,
        rgba(242, 245, 251, 0.08) 70%,
        rgba(242, 245, 251, 0.26) 86%,
        #f2f5fb 100%
    );
}

.patent-preview-blur {
    position: absolute;
    inset: 0;
    overflow: hidden;
    background: #f2f5fb;
    text-shadow: none;
    -webkit-mask-image: linear-gradient(
        to bottom,
        transparent 0%,
        transparent var(--patent-fade-start),
        #000 var(--patent-band-start),
        #000 var(--patent-band-end),
        transparent var(--patent-fade-end),
        transparent 100%
    );
    mask-image: linear-gradient(
        to bottom,
        transparent 0%,
        transparent var(--patent-fade-start),
        #000 var(--patent-band-start),
        #000 var(--patent-band-end),
        transparent var(--patent-fade-end),
        transparent 100%
    );
}

.patent-preview-copy {
    box-sizing: border-box;
    width: 100%;
    padding: 0 20px;
    color: var(--site-text, #505765);
    filter: blur(var(--patent-blur-radius));
    text-shadow: none;
}

.patent-preview-copy p {
    margin: 0;
    color: inherit;
    font-size: 15px;
    line-height: 1.9;
    text-align: justify;
}

.patent-panel.is-expanded .patent-preview-fade,
.patent-panel.is-static .patent-preview-fade {
    visibility: hidden;
    opacity: 0;
}

.patent-expand {
    position: absolute;
    right: 18px;
    bottom: 14px;
    z-index: 3;
    min-height: 34px;
    padding: 5px 13px;
    color: var(--site-blue, #1c318a);
    font: inherit;
    font-size: 13px;
    font-weight: 650;
    line-height: 1.45;
    cursor: pointer;
    background: rgba(248, 250, 255, 0.62);
    border: 1px solid rgba(28, 49, 138, 0.28);
    border-radius: 9px;
    box-shadow: none;
    -webkit-backdrop-filter: blur(10px) saturate(125%);
    backdrop-filter: blur(10px) saturate(125%);
}

.patent-expand:hover,
.patent-expand:focus-visible {
    color: #132873;
    background: rgba(248, 250, 255, 0.82);
    border-color: rgba(28, 49, 138, 0.52);
}

.patent-expand:focus-visible {
    outline: 2px solid rgba(28, 49, 138, 0.28);
    outline-offset: 2px;
}

.patent-expand:active {
    transform: scale(0.97);
}

.patent-abstract-label {
    font-weight: 400;
}

.patent-abstract p {
    margin: 0;
    color: var(--site-text, #505765);
    font-size: 15px;
    line-height: 1.9;
    text-align: justify;
}

.patent-figure {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: start;
    box-sizing: border-box;
    min-height: 0;
    height: 231px;
    width: var(--patent-figure-width);
    margin: 0;
    padding: var(--patent-figure-padding);
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--site-line, #dfe3eb);
    border-radius: 10px;
}

.patent-entry.is-patent-expanded .patent-figure {
    align-self: start;
}

.patent-figure img {
    display: block;
    box-sizing: border-box;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    object-fit: fill;
    object-position: center;
}

/* 横向流程图保持原始比例，利用上下留白适配统一尺寸的专利附图框。 */
.patent-figure--wide img {
    object-fit: contain;
}

@media (max-width: 900px) {
    .patent-entry {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        row-gap: 0;
    }

    .patent-entry-heading,
    .patent-panel,
    .patent-figure {
        grid-column: 1;
        grid-row: auto;
    }

    .patent-figure {
        grid-row: auto;
        width: min(100%, 300px);
        height: 204px;
        margin-top: 18px;
    }

    .patent-figure img {
        height: 100%;
    }
}

@media (max-width: 600px) {
    .patent-section {
        margin-top: 62px;
    }

    .patent-section-heading {
        margin-bottom: 26px;
    }

    .patent-entry-heading h3 {
        font-size: 18px;
    }

    .patent-panel {
        margin-top: 14px;
        padding: 12px 16px 18px;
    }

    .patent-panel.is-expanded {
        padding-bottom: 58px;
    }

    .patent-panel.is-static {
        padding-bottom: 18px;
    }

    .patent-figure {
        padding: var(--patent-figure-padding);
    }
}

@media (prefers-reduced-motion: reduce) {
    .patent-preview-fade {
        transition: none;
    }

    .patent-expand:active {
        transform: none;
    }
}

/* ===== 首页课题组简介：居中标题与纵向正文 ===== */
.home-intro {
    padding: clamp(48px, 5vw, 70px) 0 clamp(64px, 7vw, 90px);
    background: var(--site-surface);
}

.home-intro .intro-content {
    margin-bottom: 0;
    text-align: left;
}

.intro-heading {
    width: 100%;
    margin-bottom: clamp(28px, 3vw, 38px);
    padding: 0;
    text-align: center;
}

.intro-heading > .section-kicker {
    display: block;
    margin-bottom: 12px;
}

.intro-heading h1 {
    display: block;
    width: 100%;
    height: auto;
    overflow: visible;
    margin: 0;
    color: var(--site-ink);
    font-size: clamp(32px, 3.5vw, 42px);
    font-weight: 760;
    line-height: 1.25;
    letter-spacing: -0.025em;
    white-space: normal;
}

.intro-heading h1::after {
    display: none;
}

.home-intro .intro-text {
    max-width: 1040px;
    margin: 0 auto;
}

.home-intro .intro-text p {
    margin: 0;
    color: var(--site-text);
    font-size: 16.5px;
    line-height: 1.95;
    text-align: justify;
    text-justify: inter-ideograph;
}

.home-intro .intro-text p + p {
    margin-top: 20px;
}

.intro-invitation {
    max-width: 1040px;
    margin: clamp(34px, 4vw, 46px) auto 0;
    padding: clamp(24px, 3vw, 34px) clamp(24px, 4vw, 48px);
    background: #fbfcff;
    border: 1px solid rgba(23, 59, 143, 0.13);
    border-radius: 16px;
    text-align: center;
}

.intro-invitation > p {
    max-width: 900px;
    margin: 0 auto;
    color: var(--site-text);
    font-size: 16px;
    line-height: 1.8;
}

.intro-pathways {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px clamp(28px, 4vw, 52px);
    margin-top: 20px;
}

.intro-pathways a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 2px 0 5px;
    color: var(--site-blue);
    font-size: 16px;
    font-weight: 700;
    line-height: 1.4;
    text-align: center;
}

.intro-pathway-arrow {
    flex: 0 0 auto;
    font-size: 20px;
    line-height: 1;
    transition: transform 180ms var(--ease-out-ui);
}

.intro-pathways a:hover,
.intro-pathways a:focus-visible {
    color: var(--site-blue-strong);
}

.intro-pathways a:hover .intro-pathway-arrow,
.intro-pathways a:focus-visible .intro-pathway-arrow {
    transform: translateX(4px);
}

.intro-pathways a:active .intro-pathway-arrow {
    transform: translateX(2px);
}

@media (prefers-reduced-motion: reduce) {
    .intro-pathway-arrow {
        transition: none;
    }
}

@media (max-width: 767px) {
    .home-intro {
        padding: 42px 0 60px;
    }

    .intro-heading h1 {
        font-size: 29px;
    }

    .home-intro .intro-text p {
        font-size: 15px;
        line-height: 1.85;
    }

    .intro-invitation {
        padding: 24px 20px;
    }

    .intro-invitation > p {
        font-size: 15px;
        line-height: 1.75;
    }

    .intro-pathways {
        flex-direction: column;
        gap: 14px;
        margin-top: 18px;
    }
}

@media (prefers-reduced-transparency: reduce), (prefers-contrast: more) {
    .patent-panel:not(.is-expanded):not(.is-static) .patent-abstract {
        -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 66%, transparent 100%);
        mask-image: linear-gradient(to bottom, #000 0%, #000 66%, transparent 100%);
    }

    .patent-preview-blur {
        display: none;
    }

    .patent-expand {
        background: #f8faff;
        -webkit-backdrop-filter: none;
        backdrop-filter: none;
    }
}

/* ===== 研究方向页：核心方向与在研项目 ===== */
.page-content.research-page {
    padding-top: clamp(46px, 5vw, 66px);
}

.research-page-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: end;
    padding: clamp(38px, 5vw, 58px);
    background: linear-gradient(145deg, #ffffff 0%, #f4f7fd 100%);
    border: 1px solid var(--site-line);
    border-radius: var(--radius-l);
    box-shadow: 0 1px 2px rgba(16, 32, 72, 0.03), 0 14px 40px rgba(16, 32, 72, 0.045);
}

.research-hero-copy h1 {
    margin: 0;
    color: var(--site-ink);
    font-size: clamp(38px, 5vw, 54px);
    font-weight: 760;
    line-height: 1.12;
    letter-spacing: -0.035em;
}

.research-hero-copy p {
    max-width: 760px;
    margin: 22px 0 0;
    color: var(--site-text);
    font-size: 17px;
    line-height: 1.9;
}

.research-hero-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 0;
    padding-left: clamp(28px, 4vw, 48px);
    border-left: 1px solid var(--site-line);
}

.research-hero-stats div {
    min-width: 0;
    padding: 6px clamp(12px, 2vw, 24px);
}

.research-hero-stats div + div {
    border-left: 1px solid var(--site-line);
}

.research-hero-stats dt,
.research-hero-stats dd {
    margin: 0;
}

.research-hero-stats dt {
    color: var(--site-blue);
    font-size: clamp(34px, 4vw, 46px);
    font-weight: 750;
    line-height: 1;
    letter-spacing: -0.045em;
}

.research-hero-stats dd {
    margin-top: 10px;
    color: var(--site-text);
    font-size: 13px;
    font-weight: 650;
    line-height: 1.55;
}

.research-directions,
.research-projects {
    margin-top: clamp(58px, 7vw, 84px);
}

.research-page .research-directions {
    margin-top: 0;
}

.research-section-heading {
    display: grid;
    grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.25fr);
    gap: clamp(30px, 5vw, 76px);
    align-items: end;
    margin-bottom: 30px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--site-line);
}

.research-page .research-section-heading :is(h1, h2) {
    width: auto;
    height: auto;
    min-height: 0;
    margin: 0;
    padding: 0.04em 0 0.08em;
    overflow: visible;
    text-align: left;
    color: var(--site-ink);
    font-size: clamp(30px, 3.5vw, 40px);
    font-weight: 740;
    line-height: 1.2;
    letter-spacing: -0.028em;
}

.research-page .research-section-heading :is(h1, h2)::after {
    content: none;
    display: none;
}

.research-section-heading p {
    max-width: 680px;
    margin: 0;
    justify-self: end;
    color: var(--site-text);
    font-size: 16px;
    line-height: 1.8;
}

.research-page .direction-grid {
    gap: 20px;
    margin: 0;
}

.research-page .direction-card {
    display: flex;
    flex-direction: column;
    min-height: 326px;
    padding: 30px;
    border-radius: var(--radius-m);
}

.research-page .direction-number {
    margin: 0 0 34px;
    padding: 0;
    color: rgba(23, 59, 143, 0.38);
    font-size: 42px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.04em;
    background: transparent;
    border: 0;
    border-radius: 0;
}

.research-page .direction-card h2 {
    margin: 0 0 16px;
    color: var(--site-ink);
    font-size: 23px;
    font-weight: 720;
    line-height: 1.38;
    letter-spacing: -0.018em;
}

.research-page .direction-card p {
    margin: 0;
    color: var(--site-text);
    font-size: 15px;
    line-height: 1.82;
}

.research-page .direction-tags {
    margin-top: auto;
    padding-top: 26px;
}

.research-page .project-section-heading {
    margin-bottom: 24px;
}

.research-page .project-list {
    margin: 0;
    padding: 0;
    list-style: none;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--site-line);
    border-radius: var(--radius-l);
    box-shadow: 0 14px 40px rgba(16, 32, 72, 0.04);
    overflow: hidden;
}

.research-page .project-item {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) 170px;
    gap: clamp(22px, 3vw, 42px);
    align-items: center;
    padding: 28px 32px;
}

.research-page .project-item + .project-item {
    border-top: 1px solid var(--site-line);
}

.research-page .project-period {
    display: flex;
    align-items: center;
    gap: 7px;
    color: var(--site-blue);
    font-size: 13px;
    font-weight: 700;
    line-height: 1.5;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    justify-self: end;
}

.research-page .project-period span {
    color: var(--site-muted);
    font-weight: 450;
}

.research-page .project-program {
    margin: 0 0 7px;
    color: var(--site-blue);
    font-size: 13px;
    font-weight: 680;
    line-height: 1.5;
}

.research-page .project-copy h3 {
    margin: 0;
    color: var(--site-ink);
    font-size: 18px;
    font-weight: 680;
    line-height: 1.62;
    letter-spacing: -0.01em;
}

.research-page .project-status {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 52px;
    padding: 7px 12px;
    color: var(--site-blue);
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
    background: var(--site-blue-soft);
    border: 1px solid rgba(23, 59, 143, 0.12);
    border-radius: 999px;
}

.research-page .project-status-completed {
    color: #5d6a80;
    background: #f3f5f8;
    border-color: rgba(85, 101, 128, 0.16);
}

@media (max-width: 960px) {
    .research-page-hero {
        grid-template-columns: 1fr;
        align-items: start;
    }

    .research-hero-stats {
        max-width: 420px;
        padding: 24px 0 0;
        border-top: 1px solid var(--site-line);
        border-left: 0;
    }

    .research-hero-stats div:first-child {
        padding-left: 0;
    }

    .research-section-heading {
        grid-template-columns: 1fr;
        gap: 16px;
        align-items: start;
    }

    .research-section-heading p {
        justify-self: start;
    }

    .research-page .direction-grid {
        grid-template-columns: 1fr;
    }

    .research-page .direction-card {
        min-height: 0;
    }
}

@media (max-width: 767px) {
    .page-content.research-page {
        padding-top: 34px;
    }

    .research-page-hero {
        gap: 30px;
        padding: 30px 22px;
        border-radius: 18px;
    }

    .research-hero-copy h1 {
        font-size: 34px;
    }

    .research-hero-copy p {
        margin-top: 17px;
        font-size: 15px;
        line-height: 1.8;
    }

    .research-hero-stats {
        width: 100%;
    }

    .research-hero-stats div {
        padding-right: 12px;
        padding-left: 12px;
    }

    .research-section-heading {
        margin-bottom: 22px;
        padding-bottom: 18px;
    }

    .research-page .research-section-heading :is(h1, h2) {
        font-size: 28px;
    }

    .research-section-heading p {
        font-size: 15px;
    }

    .research-page .direction-card {
        padding: 26px 22px;
    }

    .research-page .direction-number {
        margin-bottom: 26px;
    }

    .research-page .project-list {
        border-radius: 18px;
    }

    .research-page .project-item {
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 15px 18px;
        align-items: start;
        padding: 24px 22px;
    }

    .research-page .project-period {
        grid-column: 2;
        grid-row: 1;
        justify-self: end;
    }

    .research-page .project-status {
        grid-column: 1;
        grid-row: 1;
        justify-self: start;
    }

    .research-page .project-copy {
        grid-column: 1 / -1;
        grid-row: 2;
    }

    .research-page .project-copy h3 {
        font-size: 17px;
        line-height: 1.58;
    }

}

.publication-bibtex {
    position: relative;
    padding: 0;
    overflow: visible;
    background: #f5f7fb;
    border: 0;
    border-left: 3px solid #1c318a;
    border-radius: 0;
}

.publication-bibtex pre {
    margin: 0;
    padding: 20px 22px;
    overflow-x: auto;
    color: #27334c;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    font-size: 13px;
    line-height: 1.65;
    white-space: pre;
}

.bibtex-copy {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 2;
    padding: 6px 12px;
    color: #7c8492;
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    background: transparent;
    border: 1px solid #cbd5e5;
    border-radius: 5px;
    box-shadow: none;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(6px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.publication-bibtex:hover .bibtex-copy,
.publication-bibtex:focus-within .bibtex-copy {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.bibtex-copy:hover,
.bibtex-copy:focus-visible,
.bibtex-copy:active {
    color: #7c8492;
    background: transparent;
    border-color: #cbd5e5;
}

@media (hover: none) {
    .bibtex-copy {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }
}

@media (max-width: 767px) {
    .publication-intro h1 {
        font-size: 28px;
    }

    .publication-year-heading {
        font-size: 25px;
    }

    .publication-title-line {
        display: block;
    }

    .publication-title-line h3 {
        font-size: 18px;
    }

    .publication-type {
        display: inline-block;
        margin-top: 9px;
    }

    .publication-authors,
    .publication-venue {
        font-size: 15px;
    }

    .publication-entry {
        padding-bottom: 28px;
        margin-bottom: 28px;
    }
}

@media (max-width: 600px) {
    .home-module-heading {
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
    }

    .member-stats {
        grid-template-columns: 1fr;
    }

    .member-stat {
        min-height: 125px;
    }

    .footer-row {
        grid-template-columns: 1fr;
        row-gap: 3px;
    }

    .footer-label {
        padding-right: 0;
    }

    .footer-links .ul-link1 {
        align-items: flex-start;
        flex-direction: column;
        gap: 3px;
    }
}

/* ===== 2026 设计系统精修：Apple Design × Emil Design Engineering ===== */
:root {
    --site-blue: #173b8f;
    --site-blue-strong: #102a68;
    --site-blue-soft: #edf3ff;
    --site-ink: #17223b;
    --site-text: #4f5b70;
    --site-muted: #778195;
    --site-bg: #f4f6fa;
    --site-surface: #ffffff;
    --site-line: rgba(23, 59, 143, 0.12);
    --site-yellow: #ffe06b;
    --radius-s: 10px;
    --radius-m: 16px;
    --radius-l: 22px;
    --ease-out-ui: cubic-bezier(0.23, 1, 0.32, 1);
    --ease-in-out-ui: cubic-bezier(0.77, 0, 0.175, 1);
    color-scheme: light;
}

html {
    scroll-behavior: smooth;
}

body {
    color: var(--site-ink);
    background: var(--site-bg);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 15px;
    line-height: 1.65;
    font-optical-sizing: auto;
}

::selection {
    color: #fff;
    background: var(--site-blue);
}

a {
    color: inherit;
    transition: color 160ms ease, opacity 160ms ease, background-color 160ms ease;
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid rgba(23, 59, 143, 0.25);
    outline-offset: 3px;
}

.container {
    width: min(1200px, calc(100% - 40px));
    padding-right: 0;
    padding-left: 0;
}

.topper {
    position: sticky;
    top: 0;
    z-index: 50;
}

.top {
    height: 30px;
    border-top: 0;
    background: var(--site-blue-strong);
}

.top .container {
    height: 30px;
    line-height: 30px;
}

.welcome,
.top_tel {
    font-size: 13px;
    letter-spacing: 0.01em;
}

.header {
    height: 76px;
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(23, 59, 143, 0.08);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7), 0 8px 24px rgba(20, 36, 74, 0.06);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    backdrop-filter: blur(20px) saturate(160%);
    transition: none;
}

.header .container,
.logo,
.nav {
    height: 76px;
}

.logo {
    min-width: 332px;
}

.logo img {
    width: 176px;
    height: 62px;
}

.header-title {
    margin-left: 12px;
    color: var(--site-blue-strong);
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.nav {
    padding-left: 24px;
}

.nav ul {
    align-items: center;
    gap: 4px;
}

.nav ul li a {
    height: 42px;
    padding: 0 14px;
    color: #344057;
    font-size: 15px;
    font-weight: 550;
    line-height: 42px;
    border-radius: 10px;
    transition: color 160ms ease, background-color 160ms ease, transform 120ms var(--ease-out-ui);
}

.nav ul li a::before {
    display: none;
}

.nav ul li a::after {
    right: 14px;
    bottom: 5px;
    left: 14px;
    width: auto;
    height: 2px;
    margin-left: 0;
    background: var(--site-blue);
    border-radius: 999px;
    opacity: 0;
    transform: scaleX(0.65);
    transition: opacity 160ms ease, transform 180ms var(--ease-out-ui);
}

.nav ul li a:hover,
.nav ul li.on a {
    color: var(--site-blue);
    font-weight: 650;
    background: rgba(23, 59, 143, 0.06);
}

.nav ul li a:hover::after,
.nav ul li.on a::after {
    opacity: 1;
    transform: scaleX(1);
}

.nav ul li a:active,
.module-more:active,
.profile-link:active,
.publication-toggle:active,
.back-to-top:active {
    transform: scale(0.97);
    transition-duration: 100ms;
}

.slider {
    height: clamp(340px, 38vw, 450px);
    background: #0f1f49;
}

.slide {
    transition: opacity 420ms ease;
}

.slide::after {
    background: linear-gradient(90deg, rgba(7, 18, 48, 0.68), rgba(7, 18, 48, 0.18) 62%, rgba(7, 18, 48, 0.08));
}

/* 密码学图书合成图加载前使用同色系背景，避免闪烁。 */
.books-slide {
    overflow: hidden;
    background:
        radial-gradient(circle at 50% 34%, rgba(48, 83, 144, 0.28), transparent 42%),
        linear-gradient(180deg, rgba(5, 15, 36, 0.08), rgba(4, 12, 30, 0.3)),
        url("../images/carousel/backgrounds/cryptography-pattern.svg") center / cover no-repeat,
        linear-gradient(135deg, #07142f 0%, #0d2149 52%, #07152f 100%);
}

/* 密码学期刊合成图加载前使用同色系背景，避免闪烁。 */
.journals-slide {
    overflow: hidden;
    background:
        radial-gradient(circle at 50% 34%, rgba(48, 83, 144, 0.28), transparent 42%),
        linear-gradient(180deg, rgba(5, 15, 36, 0.08), rgba(4, 12, 30, 0.3)),
        url("../images/carousel/backgrounds/cryptography-pattern.svg") center / cover no-repeat,
        linear-gradient(135deg, #07142f 0%, #0d2149 52%, #07152f 100%);
}

/* 前两页与获奖、研究方向页统一为完整的 16:5 静态轮播图。 */
.books-slide > img,
.journals-slide > img {
    object-fit: contain;
    object-position: center;
}

.books-slide::after,
.journals-slide::after {
    display: none;
}

/* 研究方向页已经包含完整排版，保持原始 16:5 横幅构图。 */
.research-directions-slide {
    background: #07142f;
}

.research-directions-slide img {
    object-fit: contain;
    object-position: center;
}

.research-directions-slide::after {
    display: none;
}

/* 奖项荣誉页已经包含完整排版，保持原始明暗与 16:5 构图。 */
.awards-slide {
    background: #07142f;
}

.awards-slide img {
    object-fit: contain;
    object-position: center;
}

.awards-slide::after {
    display: none;
}

.caption {
    left: max(32px, calc((100vw - 1200px) / 2));
    bottom: clamp(34px, 7vw, 72px);
    max-width: min(540px, calc(100% - 64px));
    padding: 24px 28px;
    text-shadow: none;
    background: rgba(10, 26, 71, 0.46);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-top-color: rgba(255, 255, 255, 0.34);
    border-radius: var(--radius-m);
    box-shadow: 0 18px 48px rgba(5, 13, 37, 0.2);
    -webkit-backdrop-filter: blur(18px) saturate(135%);
    backdrop-filter: blur(18px) saturate(135%);
}

.caption h2 {
    margin-bottom: 8px;
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 760;
    line-height: 1.08;
    letter-spacing: -0.025em;
}

.caption p {
    font-size: clamp(16px, 1.7vw, 19px);
    line-height: 1.55;
}

.slider .nav {
    width: 44px;
    height: 44px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 26px;
    line-height: 44px;
    background: rgba(10, 24, 61, 0.36);
    border: 1px solid rgba(255, 255, 255, 0.24);
    box-shadow: none;
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    transition: background-color 160ms ease, transform 120ms var(--ease-out-ui);
}

.slider .nav:active {
    transform: translateY(-50%) scale(0.94);
}

.dots {
    bottom: 16px;
    gap: 0;
    padding: 4px 7px;
    background: rgba(10, 24, 61, 0.32);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
}

.dot {
    position: relative;
    width: 24px;
    height: 24px;
    padding: 0;
    border: 0;
    background: transparent;
    transition: transform 120ms var(--ease-out-ui);
}

.dot::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 180ms var(--ease-out-ui), background-color 160ms ease;
}

.dot.active {
    width: 24px;
    background: transparent;
}

.dot.active::before {
    width: 22px;
    background: #fff;
}

.dot:active {
    transform: scale(0.92);
}

.home-updates,
.page-content,
.team-page {
    background: var(--site-bg);
}

.home-updates {
    padding: 64px 0 72px;
}

.home-feed-grid {
    grid-template-columns: minmax(360px, 1.05fr) minmax(0, 1.45fr);
    gap: 22px;
    margin-bottom: 22px;
}

.home-module,
.content-section,
.team-card,
.roster-section,
.research-overview,
.results-intro,
.direction-card,
.join-support-grid article,
.join-options article,
.join-admissions,
.join-expectations {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--site-line);
    box-shadow: 0 1px 2px rgba(16, 32, 72, 0.03), 0 14px 40px rgba(16, 32, 72, 0.045);
}

.home-module {
    padding: 32px;
    border-radius: var(--radius-l);
}

.home-module-heading,
.roster-heading {
    margin-bottom: 24px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--site-line);
}

.home-module-heading h2,
.roster-heading h2,
.publication-intro h1,
.research-overview h2,
.join-support h2,
.join-admissions h2,
.join-details h2 {
    color: var(--site-ink);
    font-weight: 730;
    letter-spacing: -0.025em;
}

.section-kicker {
    margin-bottom: 10px;
    color: var(--site-blue);
    font-size: 11px;
    font-weight: 760;
    letter-spacing: 0.2em;
}

.module-more {
    color: var(--site-blue);
    font-size: 13px;
    font-weight: 650;
    border-bottom-color: rgba(23, 59, 143, 0.35);
}

.news-placeholder {
    min-height: 210px;
    background: #f5f8ff;
    border: 1px solid rgba(23, 59, 143, 0.08);
    border-radius: var(--radius-m);
}

.news-mark {
    background: var(--site-blue);
    box-shadow: 0 8px 20px rgba(23, 59, 143, 0.16);
}

.progress-item {
    border-bottom-color: var(--site-line);
}

.progress-item time {
    align-self: start;
    display: flex;
    min-height: 1.55em;
    align-items: center;
    line-height: 1.55;
    transform: none;
}

.progress-item h3 a {
    color: var(--site-ink);
}

.members-module {
    padding: 40px 42px;
    background-image:
        linear-gradient(100deg, rgba(12, 34, 92, 0.93), rgba(28, 54, 128, 0.72)),
        url("../images/team/decor/team-members-background.jpg");
    border-radius: var(--radius-l);
    box-shadow: 0 18px 48px rgba(11, 31, 82, 0.16);
}

.members-module .home-module-heading {
    border-bottom-color: rgba(255, 255, 255, 0.28);
}

.members-module .member-stat {
    min-height: 132px;
    transition: transform 120ms var(--ease-out-ui), background-color 160ms ease;
}

.members-module .member-stat:active {
    transform: scale(0.98);
}

.members-module .member-stat-copy strong {
    letter-spacing: -0.035em;
}

.page-content,
.team-page {
    padding: 64px 0 72px;
}

.content-section,
.research-overview,
.results-intro {
    padding: 48px;
    border-radius: var(--radius-l);
}

.section-lead {
    color: var(--site-text);
    font-size: 17px;
    line-height: 1.85;
}

.direction-grid,
.join-support-grid,
.join-options,
.join-details {
    gap: 20px;
}

.direction-card {
    min-height: 338px;
    padding: 32px;
    border-radius: var(--radius-m);
}

.direction-number,
.join-number,
.support-number {
    color: rgba(23, 59, 143, 0.38);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.04em;
}

.direction-card h2,
.join-options h2,
.join-support-grid h3,
.profile-detail h3 {
    color: var(--site-ink);
    letter-spacing: -0.015em;
}

.direction-tags span,
.student-tags span,
.publication-meta span {
    color: var(--site-blue);
    background: var(--site-blue-soft);
    border: 1px solid rgba(23, 59, 143, 0.08);
}

.section-title {
    margin-bottom: 34px;
    padding-bottom: 14px;
    color: var(--site-ink);
    font-size: clamp(28px, 3vw, 36px);
    font-weight: 740;
    text-align: left;
    letter-spacing: -0.025em;
}

.section-title::after {
    right: auto;
    left: 0;
    width: 52px;
    height: 3px;
    transform: none;
    background: var(--site-blue);
}

.team-section {
    margin-bottom: 54px;
}

.teacher-card {
    border-radius: var(--radius-l);
}

.teacher-card .card-content {
    gap: 40px;
    padding: 42px;
}

.teacher-card .member-photo {
    border: 1px solid var(--site-line);
    border-radius: 14px;
    box-shadow: 0 12px 30px rgba(16, 39, 96, 0.12);
    background: #565656;
}

.teacher-card .member-photo img {
    object-fit: contain;
    object-position: center;
}

.member-name .name-en,
.student-card h3 {
    color: var(--site-ink);
    letter-spacing: -0.02em;
}

.profile-link {
    color: var(--site-blue);
    border-color: rgba(23, 59, 143, 0.28);
    transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease, transform 120ms var(--ease-out-ui);
}

.profile-detail h3::before {
    width: 3px;
    background: var(--site-blue);
}

.roster-section {
    padding: 32px 34px 36px;
    border-radius: var(--radius-l);
}

.student-grid {
    gap: 18px;
}

.student-card {
    border-color: var(--site-line);
    border-radius: var(--radius-m);
    box-shadow: 0 1px 2px rgba(16, 32, 72, 0.03), 0 10px 28px rgba(16, 32, 72, 0.04);
}

.student-avatar,
.student-card:nth-child(3n + 2) .student-avatar,
.student-card:nth-child(3n) .student-avatar {
    background: var(--site-blue-strong);
}

.student-card-body {
    padding: 21px;
}

.join-support-grid article,
.join-options article,
.join-admissions,
.join-expectations,
.join-contact-card {
    border-radius: var(--radius-m);
}

.join-contact-card {
    background: var(--site-blue-strong);
    border-color: transparent;
    box-shadow: 0 18px 44px rgba(11, 31, 82, 0.16);
}

.join-contact-card h2 {
    color: #fff;
}

.publication-intro,
.publication-year-group {
    max-width: 1080px;
}

.publication-intro {
    margin-bottom: 36px;
    padding-bottom: 24px;
    border-bottom-color: var(--site-line);
}

.publication-intro h1 {
    font-size: clamp(32px, 4vw, 42px);
}

.publication-year-heading {
    margin-bottom: 22px;
    padding-left: 12px;
    color: var(--site-blue);
    font-size: 27px;
    font-weight: 730;
    border-left-width: 3px;
    border-left-color: var(--site-blue);
}

.publication-entry {
    padding-bottom: 30px;
    margin-bottom: 30px;
    border-bottom-color: var(--site-line);
}

.publication-authors,
.publication-venue {
    color: var(--site-text);
    font-size: 16px;
}

.publication-title-line h3 {
    color: var(--site-ink);
    font-size: 20px;
    letter-spacing: -0.01em;
}

.publication-type {
    color: var(--site-blue);
    background: var(--site-blue-soft);
    border: 1px solid rgba(23, 59, 143, 0.1);
    border-radius: 999px;
}

.publication-actions a,
.publication-toggle {
    color: var(--site-muted);
    font-size: 14px;
    text-underline-offset: 3px;
    transition: color 160ms ease, transform 100ms var(--ease-out-ui);
}

.publication-panel,
.publication-bibtex {
    color: var(--site-text);
    background: #f2f5fb;
    border-left-color: var(--site-blue);
    border-radius: 0 12px 12px 0;
}

.bibtex-copy {
    border-color: rgba(23, 59, 143, 0.16);
}

.footer {
    min-height: 0;
    padding: 30px 0;
    background: #111b33;
}

.footer-row {
    color: rgba(255, 255, 255, 0.82);
    font-size: 13px;
}

.footer-label {
    color: #fff;
}

.footer-links .ul-link1 li a {
    color: rgba(255, 255, 255, 0.78);
}

.back-to-top {
    right: 24px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    background: rgba(17, 27, 51, 0.82);
    border: 1px solid rgba(255, 255, 255, 0.16);
    box-shadow: 0 10px 26px rgba(7, 16, 35, 0.18);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    transition: opacity 160ms ease, transform 140ms var(--ease-out-ui), background-color 160ms ease;
}

.back-to-top.is-visible {
    opacity: 1;
    pointer-events: auto;
}

.model-leftnav {
    width: min(82%, 360px);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 22px 0 56px rgba(10, 24, 61, 0.18);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    backdrop-filter: blur(24px) saturate(160%);
    transition: transform 260ms var(--ease-out-ui);
}

.model-leftnav-top {
    background: var(--site-blue-strong);
}

.model-leftnav-main .nnav li {
    border-bottom-color: var(--site-line);
}

.model-leftnav-main .nnav li a {
    height: 48px;
    padding-left: 20px;
    color: var(--site-ink);
    line-height: 48px;
    transition: color 160ms ease, background-color 160ms ease;
}

@media (hover: hover) and (pointer: fine) {
    .slider .nav:hover {
        background: rgba(23, 59, 143, 0.72);
        border-color: rgba(255, 255, 255, 0.4);
    }

    .profile-link:hover {
        color: #fff;
        background: var(--site-blue);
        border-color: var(--site-blue);
    }

    .back-to-top:hover {
        transform: translateY(-2px);
        background: var(--site-blue-strong);
        box-shadow: 0 12px 28px rgba(7, 16, 35, 0.22);
    }
}

@media (max-width: 991px) {
    .header,
    .header .container,
    .logo,
    .nav {
        height: 72px;
    }

    .logo {
        min-width: 250px;
    }

    .logo img {
        width: 150px;
        height: 58px;
    }

    .nav ul li a {
        height: 38px;
        padding: 0 7px;
        font-size: 13px;
        line-height: 38px;
    }

    .home-feed-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
}

@media (max-width: 767px) {
    .container {
        width: min(100% - 28px, 1200px);
    }

    .topper {
        position: relative;
    }

    .header,
    .header .container,
    .logo {
        height: 68px;
    }

    .logo {
        min-width: 0;
    }

    .logo img {
        width: 142px;
        height: 54px;
    }

    .header-title {
        margin-left: 8px;
        font-size: 15px;
    }

    .model-navbtn {
        width: 38px;
        height: 38px;
        background: var(--site-blue);
        border-radius: 10px;
    }

    .slider {
        height: 320px;
    }

    .caption {
        right: 20px;
        bottom: 36px;
        left: 20px;
        max-width: none;
        padding: 20px;
    }

    .slider .nav {
        display: none;
    }

    .home-updates,
    .page-content,
    .team-page {
        padding: 44px 0 52px;
    }

    .home-module,
    .content-section,
    .research-overview,
    .results-intro {
        padding: 24px 20px;
        border-radius: 18px;
    }

    .members-module {
        padding: 28px 22px;
    }

    .teacher-card .card-content {
        padding: 28px 20px;
    }

    .roster-section {
        padding: 26px 20px 28px;
    }

    .section-title {
        margin-bottom: 28px;
    }

    .direction-card,
    .join-support-grid article,
    .join-options article,
    .join-expectations,
    .join-contact-card {
        padding: 26px 22px;
    }

    .footer {
        padding: 26px 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-reduced-transparency: reduce) {
    .header,
    .caption,
    .slider .nav,
    .dots,
    .model-leftnav,
    .back-to-top {
        -webkit-backdrop-filter: none;
        backdrop-filter: none;
    }

    .header,
    .model-leftnav {
        background: #fff;
    }

    .caption {
        background: rgba(10, 26, 71, 0.92);
    }
}

@media (prefers-contrast: more) {
    .header,
    .home-module,
    .content-section,
    .team-card,
    .roster-section,
    .direction-card,
    .student-card {
        border-color: rgba(15, 31, 72, 0.42);
    }
}

/* ===== 克制动效：参考 Apple Design 与高校门户的交互节奏 ===== */
.topper .header {
    transition: background-color 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.topper.is-scrolled .header {
    background: rgba(255, 255, 255, 0.96);
    border-bottom-color: rgba(23, 59, 143, 0.12);
    box-shadow: 0 12px 34px rgba(16, 32, 72, 0.1);
}

.slide .caption {
    opacity: 0;
    transform: translateY(14px) scale(0.985);
    transition:
        opacity 360ms ease,
        transform 420ms var(--ease-out-ui),
        backdrop-filter 360ms ease;
}

.slide.active .caption {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition-delay: 90ms;
}

.progress-item h3 a,
.footer-links .ul-link1 li a {
    text-decoration-color: transparent;
    text-underline-offset: 4px;
    transition: color 160ms ease, text-decoration-color 160ms ease;
}

.publication-panel {
    transform-origin: top center;
}

@media (hover: hover) and (pointer: fine) {
    .progress-item h3 a:hover,
    .footer-links .ul-link1 li a:hover {
        text-decoration-color: currentColor;
    }
}

@media (prefers-reduced-motion: reduce) {
    .slide .caption,
    .slide.active .caption {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ===== 联系我们页面 ===== */
.join-contact-link {
    display: flex;
    min-height: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding: 40px;
    color: #fff;
    background: var(--site-blue-strong);
    border-radius: var(--radius-m);
    box-shadow: 0 18px 44px rgba(11, 31, 82, 0.16);
}

.join-contact-link .section-kicker,
.join-contact-link h2 {
    color: #fff;
}

.join-contact-link p {
    max-width: 32em;
    margin: 4px 0 28px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 15px;
    line-height: 1.8;
}

.join-contact-cta,
.map-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    font-size: 14px;
    font-weight: 680;
    line-height: 1;
    text-decoration: none;
}

.join-contact-cta {
    margin-top: auto;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.13);
    border: 1px solid rgba(255, 255, 255, 0.26);
    border-radius: 999px;
    transition: background-color 160ms ease, transform 120ms var(--ease-out-ui);
}

.join-contact-cta::after,
.map-link::after {
    content: ' →';
}

.contact-page {
    padding: 58px 0 72px;
}

.contact-page-intro {
    margin: 0 0 28px;
    padding-bottom: 25px;
    text-align: left;
    border-bottom: 1px solid var(--site-line);
}

.contact-page-intro h1 {
    margin: 0;
    color: var(--site-ink);
    font-size: clamp(30px, 3.4vw, 42px);
    font-weight: 760;
    letter-spacing: -0.04em;
    line-height: 1.12;
}

.contact-page-intro p {
    max-width: 680px;
    margin: 11px 0 0;
    color: var(--site-text);
    font-size: 15px;
    line-height: 1.75;
}

.contact-main-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.98fr) minmax(0, 1.02fr);
    gap: 18px;
    margin-bottom: 18px;
}

.contact-main-grid > * {
    min-width: 0;
}

.contact-details-card,
.contact-map-card,
.contact-resources {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--site-line);
    border-radius: var(--radius-l);
    box-shadow: 0 1px 2px rgba(16, 32, 72, 0.03), 0 14px 40px rgba(16, 32, 72, 0.045);
}

.contact-details-card {
    display: flex;
    flex-direction: column;
    padding: 32px;
}

.contact-details-heading {
    text-align: left;
}

.contact-details-heading .section-kicker {
    display: block;
    margin-bottom: 5px;
}

.contact-details-card h2 {
    position: relative;
    height: auto;
    padding-bottom: 0;
    overflow: visible;
    text-align: center;
}

.contact-details-card h2::after {
    display: none;
}

.contact-details-card h2,
.contact-map-copy h2,
.contact-resources h2 {
    margin: 0;
    color: var(--site-ink);
    font-size: 25px;
    font-weight: 730;
    letter-spacing: -0.025em;
    line-height: 1.25;
}

.contact-details-list {
    display: grid;
    gap: 0;
    margin-top: 22px;
}

.contact-details-list > div {
    padding: 20px 0;
    border-top: 1px solid var(--site-line);
}

.contact-details-list > div:first-child {
    padding-top: 0;
    border-top: 0;
}

.contact-details-list dt {
    margin-bottom: 7px;
    color: #71809a;
    font-size: 13px;
    font-weight: 670;
}

.contact-details-list dd {
    color: var(--site-ink);
    font-size: 16px;
    line-height: 1.65;
}

.contact-details-list .email-heading {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 6px;
}

.contact-details-list .email-reply-note {
    color: #8792a7;
    font-weight: 500;
}

.contact-details-list a {
    color: var(--site-blue);
    font-size: 17px;
    font-weight: 620;
    text-decoration: none;
}

.contact-mail-tip {
    margin: 0;
    padding-top: 20px;
    color: #69758b;
    font-size: 13px;
    line-height: 1.75;
    white-space: nowrap;
    border-top: 1px solid var(--site-line);
}

.contact-mail-subject {
    margin: 7px 0 0;
    color: #69758b;
    font-size: 13px;
    line-height: 1.75;
}

.contact-mail-subject strong {
    color: var(--site-ink);
    font-weight: 650;
}

.contact-map-card {
    display: grid;
    min-height: 396px;
    grid-template-rows: minmax(260px, 1fr) auto;
    overflow: hidden;
}

.contact-map-visual {
    position: relative;
    overflow: hidden;
    background:
        linear-gradient(90deg, transparent 49%, rgba(23, 59, 143, 0.08) 49%, rgba(23, 59, 143, 0.08) 51%, transparent 51%),
        linear-gradient(0deg, transparent 49%, rgba(23, 59, 143, 0.08) 49%, rgba(23, 59, 143, 0.08) 51%, transparent 51%),
        #edf3fb;
    background-size: 44px 44px, 44px 44px, auto;
}

.contact-map-live::before,
.contact-map-live::after {
    display: none;
}

.contact-amap {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 250px;
    background: #edf3fb;
}

.contact-map-loading,
.contact-map-error,
.contact-map-fallback {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: grid;
    align-content: center;
    justify-items: center;
    gap: 6px;
    margin: 0;
    padding: 24px;
    color: #6f7d96;
    font-size: 13px;
    text-align: center;
    background: #edf3fb;
}

.contact-map-error strong {
    color: var(--site-ink);
    font-size: 15px;
}

.amap-location-marker {
    position: relative;
    display: grid;
    width: 38px;
    height: 38px;
    place-items: center;
    background: var(--site-blue);
    border: 4px solid #fff;
    border-radius: 50% 50% 50% 12%;
    box-shadow: 0 8px 20px rgba(16, 42, 104, 0.28);
    transform: rotate(-45deg);
}

.amap-location-marker span {
    width: 9px;
    height: 9px;
    background: #fff;
    border-radius: 50%;
}

.amap-location-info {
    display: grid;
    gap: 3px;
    min-width: 190px;
    padding: 2px 4px;
    color: var(--site-ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

.amap-location-info strong {
    font-size: 14px;
}

.amap-location-info span {
    color: #71809a;
    font-size: 12px;
}

.contact-map-visual::before,
.contact-map-visual::after {
    position: absolute;
    inset: auto;
    content: '';
    pointer-events: none;
}

.contact-map-visual::before {
    width: 125%;
    height: 34px;
    top: 44%;
    left: -12%;
    background: rgba(255, 255, 255, 0.93);
    border-top: 1px solid rgba(23, 59, 143, 0.08);
    border-bottom: 1px solid rgba(23, 59, 143, 0.08);
    transform: rotate(-11deg);
}

.contact-map-visual::after {
    width: 34px;
    height: 130%;
    top: -16%;
    left: 61%;
    background: rgba(255, 255, 255, 0.93);
    border-right: 1px solid rgba(23, 59, 143, 0.08);
    border-left: 1px solid rgba(23, 59, 143, 0.08);
    transform: rotate(17deg);
}

.map-road,
.map-block,
.map-green,
.map-pin {
    position: absolute;
    display: block;
}

.map-road {
    z-index: 1;
    height: 12px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(23, 59, 143, 0.08);
    border-radius: 99px;
}

.map-road-one { width: 56%; top: 23%; left: 5%; transform: rotate(17deg); }
.map-road-two { width: 48%; right: 3%; bottom: 22%; transform: rotate(-22deg); }

.map-block {
    z-index: 2;
    background: #cbd8eb;
    border: 2px solid rgba(255, 255, 255, 0.92);
    border-radius: 6px;
    box-shadow: 0 4px 10px rgba(35, 61, 112, 0.08);
}

.map-block-one { width: 104px; height: 66px; top: 17%; right: 13%; transform: rotate(-8deg); }
.map-block-two { width: 74px; height: 104px; bottom: 14%; left: 16%; transform: rotate(12deg); }
.map-block-three { width: 100px; height: 58px; right: 8%; bottom: 11%; transform: rotate(9deg); }

.map-green {
    z-index: 0;
    background: rgba(151, 190, 142, 0.38);
    border-radius: 50%;
}

.map-green-one { width: 108px; height: 108px; top: 13%; left: 15%; }
.map-green-two { width: 80px; height: 80px; right: 23%; bottom: 21%; }

.map-pin {
    z-index: 4;
    top: 45%;
    left: 53%;
    min-width: 58px;
    padding: 8px 9px;
    color: #fff;
    font-size: 11px;
    font-weight: 760;
    letter-spacing: 0.03em;
    text-align: center;
    background: var(--site-blue);
    border: 3px solid #fff;
    border-radius: 999px;
    box-shadow: 0 10px 20px rgba(18, 49, 126, 0.25);
    transform: translate(-50%, -50%);
}

.map-pin::after {
    position: absolute;
    top: 100%;
    left: 50%;
    width: 11px;
    height: 11px;
    content: '';
    background: var(--site-blue);
    transform: translate(-50%, -50%) rotate(45deg);
}

.contact-map-copy {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 22px;
    padding: 21px 26px 23px;
    background: #fff;
}

.contact-map-copy .section-kicker {
    margin-bottom: 5px;
    transform: translateY(-2px);
}

.contact-map-copy h2 {
    position: static;
    height: auto;
    padding-bottom: 0;
    overflow: visible;
    font-size: 21px;
    text-align: left;
}

.contact-map-copy h2::after {
    display: none;
}

.map-link {
    flex: 0 0 auto;
    margin-bottom: 4px;
    color: var(--site-blue);
    font-size: 13px;
    font-weight: 680;
}

.contact-resources {
    padding: 27px 32px 31px;
}

.contact-resources-heading {
    margin-bottom: 17px;
    padding-bottom: 0;
    border-bottom: 0;
}

.contact-resources-heading .section-kicker {
    margin-bottom: 5px;
}

.contact-resources h2 {
    height: auto;
    padding: 0;
    overflow: visible;
    font-size: 23px;
    text-align: left;
}

.contact-resources h2::after {
    display: none;
}

.contact-resource-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.contact-resource-link {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) auto;
    gap: 14px;
    align-items: center;
    min-height: 66px;
    padding: 15px 18px;
    color: var(--site-ink);
    text-decoration: none;
    background: #f7f9fd;
    border: 1px solid rgba(23, 59, 143, 0.08);
    border-radius: 12px;
    transition: background-color 160ms ease, border-color 160ms ease, transform 120ms var(--ease-out-ui);
}

.contact-resource-index {
    color: var(--site-blue);
    font-size: 13px;
    font-weight: 760;
    font-variant-numeric: tabular-nums;
}

.contact-resource-link strong {
    font-size: 16px;
    font-weight: 690;
}

.contact-resource-link > span:last-child {
    color: var(--site-blue);
    font-size: 19px;
}

@media (hover: hover) and (pointer: fine) {
    .join-contact-cta:hover {
        color: #fff;
        background: rgba(255, 255, 255, 0.22);
    }

    .contact-resource-link:hover {
        color: var(--site-ink);
        background: #fff;
        border-color: rgba(23, 59, 143, 0.2);
        transform: translateY(-2px);
    }
}

.join-contact-cta:active,
.contact-resource-link:active {
    transform: scale(0.98);
}

@media (max-width: 991px) {
    .contact-main-grid {
        grid-template-columns: 1fr;
    }

    .contact-mail-tip {
        white-space: normal;
    }

    .contact-map-card {
        min-height: 396px;
    }
}

@media (max-width: 767px) {
    .contact-page {
        padding: 48px 0 56px;
    }

    .contact-page-intro {
        margin-bottom: 28px;
    }

    .contact-page-intro p {
        font-size: 15px;
    }

    .contact-details-card,
    .contact-resources,
    .join-contact-link {
        padding: 26px 22px;
    }

    .contact-map-card {
        min-height: 370px;
    }

    .contact-map-copy {
        padding: 22px;
    }

    .contact-mail-tip {
        white-space: normal;
    }

    .contact-resource-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 加入我们：招生、成长支持与课题组日常 ===== */
.join-page {
    padding: 58px 0 78px;
    background: var(--site-bg);
}

.join-page-intro {
    max-width: 860px;
    margin-bottom: 34px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--site-line);
}

.join-page-intro h1 {
    margin: 0;
    color: var(--site-ink);
    font-size: clamp(34px, 4.6vw, 54px);
    font-weight: 760;
    letter-spacing: -0.045em;
    line-height: 1.12;
}

.join-page-intro p {
    max-width: 760px;
    margin-top: 18px;
    color: var(--site-text);
    font-size: 17px;
    line-height: 1.85;
}

.join-panel,
.lab-life {
    margin-bottom: 24px;
    padding: 42px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--site-line);
    border-radius: var(--radius-l);
    box-shadow: 0 1px 2px rgba(16, 32, 72, 0.03), 0 14px 40px rgba(16, 32, 72, 0.045);
}

.join-panel-heading,
.lab-life-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.72fr);
    gap: 42px;
    align-items: end;
    margin-bottom: 30px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--site-line);
}

.join-panel-heading .section-kicker,
.lab-life-heading .section-kicker {
    display: block;
}

.join-panel-heading :is(h1, h2),
.lab-life-heading h2,
.join-contact-panel h2 {
    height: auto;
    margin: 0;
    padding: 0;
    overflow: visible;
    color: var(--site-ink);
    font-size: clamp(28px, 3vw, 38px);
    font-weight: 740;
    letter-spacing: -0.035em;
    line-height: 1.2;
    text-align: left;
}

.join-panel-heading :is(h1, h2)::after,
.lab-life-heading h2::after,
.join-contact-panel h2::after {
    display: none;
}

.join-panel-heading > p,
.lab-life-heading > p {
    margin: 0;
    color: var(--site-text);
    font-size: 15px;
    line-height: 1.8;
}

.join-opportunity-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.join-opportunity-card {
    min-height: 340px;
    padding: 28px;
    background: #f7f9fd;
    border: 1px solid rgba(23, 59, 143, 0.09);
    border-radius: var(--radius-m);
}

.join-opportunity-primary {
    background: linear-gradient(145deg, #eef3ff 0%, #f8faff 100%);
    border-color: rgba(23, 59, 143, 0.15);
}

.join-card-index {
    display: block;
    margin-bottom: 42px;
    color: rgba(23, 59, 143, 0.42);
    font-size: 15px;
    font-weight: 760;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.08em;
}

.join-opportunity-card h2 {
    height: auto;
    margin-bottom: 13px;
    padding: 0;
    overflow: visible;
    color: var(--site-ink);
    font-size: 23px;
    font-weight: 720;
    letter-spacing: -0.025em;
    line-height: 1.35;
}

.join-opportunity-card h2::after {
    display: none;
}

.join-opportunity-card > p,
.join-card-note {
    color: var(--site-text);
    font-size: 14px;
    line-height: 1.82;
}

.join-card-note {
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid rgba(23, 59, 143, 0.1);
}

.join-major-block {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid rgba(23, 59, 143, 0.12);
}

.join-major-block strong {
    display: block;
    margin-bottom: 10px;
    color: var(--site-blue);
    font-size: 13px;
    font-weight: 740;
}

.join-major-block ul {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.join-major-block li {
    padding: 5px 9px;
    color: var(--site-blue);
    font-size: 12px;
    line-height: 1.4;
    background: rgba(255, 255, 255, 0.74);
    border: 1px solid rgba(23, 59, 143, 0.09);
    border-radius: 999px;
}

.join-major-block small {
    display: block;
    margin-top: 11px;
    color: #778196;
    font-size: 12px;
    line-height: 1.65;
}

.join-dual-section {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.join-dual-panel {
    padding: 38px 40px 34px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--site-line);
    border-radius: var(--radius-l);
    box-shadow: 0 1px 2px rgba(16, 32, 72, 0.03), 0 14px 40px rgba(16, 32, 72, 0.045);
}

.join-dual-heading {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--site-line);
}

.join-dual-heading .section-kicker {
    display: block;
}

.join-dual-heading h2 {
    margin: 0;
    color: var(--site-ink);
    font-size: clamp(27px, 2.7vw, 36px);
    font-weight: 740;
    letter-spacing: -0.035em;
    line-height: 1.2;
}

.join-dual-heading h2::after {
    display: none;
}

.join-dual-list li {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
    min-height: 104px;
    padding: 22px 0;
    border-top: 1px solid var(--site-line);
}

.join-dual-list li:first-child {
    padding-top: 0;
    border-top: 0;
}

.join-dual-list li > span {
    padding-top: 0.18em;
    color: rgba(23, 59, 143, 0.46);
    font-size: 13px;
    font-weight: 760;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.08em;
}

.join-dual-list p {
    margin: 0;
    color: var(--site-ink);
    font-size: 15px;
    font-weight: 540;
    line-height: 1.82;
}

.join-contact-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
    gap: 54px;
    align-items: end;
    margin-bottom: 58px;
    padding: 42px;
    color: #fff;
    background: linear-gradient(135deg, #102a68 0%, #173f91 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-l);
    box-shadow: 0 18px 46px rgba(11, 31, 82, 0.15);
}

.join-contact-panel .section-kicker,
.join-contact-panel h2 {
    color: #fff;
}

.join-contact-panel > div:first-child > p {
    max-width: 650px;
    margin-top: 15px;
    color: rgba(255, 255, 255, 0.78);
    font-size: 15px;
    line-height: 1.8;
}

.join-contact-action {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 17px;
}

.join-contact-action > p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    line-height: 1.7;
}

.join-contact-panel .join-contact-cta {
    margin: 0;
}

.lab-life {
    margin-bottom: 0;
    padding-bottom: 46px;
}

.lab-life-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.lab-life-card {
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--site-line);
    border-radius: var(--radius-m);
}

.lab-life-media {
    position: relative;
    display: flex;
    aspect-ratio: 16 / 10;
    align-items: flex-end;
    justify-content: space-between;
    padding: 18px;
    overflow: hidden;
    color: #fff;
    background:
        radial-gradient(circle at 80% 20%, rgba(111, 142, 214, 0.52), transparent 38%),
        linear-gradient(145deg, #183679 0%, #395ba9 100%);
}

.lab-life-media::after {
    content: '';
    position: absolute;
    top: 16%;
    right: -12%;
    width: 58%;
    aspect-ratio: 1;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
}

.lab-life-media > span,
.lab-life-media > small {
    position: relative;
    z-index: 1;
}

.lab-life-media > span {
    font-size: 24px;
    font-weight: 720;
    font-variant-numeric: tabular-nums;
}

.lab-life-media > small {
    color: rgba(255, 255, 255, 0.72);
    font-size: 11px;
    letter-spacing: 0.08em;
}

.lab-life-media img {
    position: absolute;
    inset: 0;
    z-index: 2;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.lab-life-copy {
    min-height: 130px;
    padding: 20px;
}

.lab-life-copy h3 {
    margin-bottom: 7px;
    color: var(--site-ink);
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.lab-life-copy p {
    color: var(--site-text);
    font-size: 13px;
    line-height: 1.72;
}

@media (max-width: 991px) {
    .join-panel-heading,
    .lab-life-heading,
    .join-contact-panel {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .join-opportunity-grid,
    .lab-life-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .join-dual-section {
        grid-template-columns: 1fr;
    }

    .join-opportunity-primary {
        grid-column: 1 / -1;
    }

    .join-contact-action {
        padding-top: 20px;
        border-top: 1px solid rgba(255, 255, 255, 0.18);
    }
}

@media (max-width: 767px) {
    .join-page {
        padding: 46px 0 58px;
    }

    .join-page-intro {
        margin-bottom: 26px;
        padding-bottom: 24px;
    }

    .join-page-intro p {
        font-size: 15px;
    }

    .join-panel,
    .join-dual-panel,
    .join-contact-panel,
    .lab-life {
        padding: 26px 22px;
        border-radius: 18px;
    }

    .join-opportunity-grid,
    .lab-life-grid {
        grid-template-columns: 1fr;
    }

    .join-opportunity-primary {
        grid-column: auto;
    }

    .join-opportunity-card {
        min-height: 0;
        padding: 24px;
    }

    .join-card-index {
        margin-bottom: 28px;
    }

    .join-dual-list li {
        min-height: 0;
        padding: 22px 0;
        border-top: 1px solid var(--site-line);
    }

    .join-dual-list li:first-child {
        padding-top: 0;
        border-top: 0;
    }

    .join-contact-panel {
        margin-bottom: 46px;
    }

    .lab-life-copy {
        min-height: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .join-contact-panel .join-contact-cta {
        transition: none;
    }
}

/* ===== 加入我们 · 视觉重构（2026-08） ===== */
.join-page {
    padding: 70px 0 92px;
    background:
        radial-gradient(circle at 88% 7%, rgba(45, 82, 164, 0.055), transparent 27%),
        var(--site-bg);
}

.join-page-intro {
    max-width: none;
    margin: 0 0 66px;
    padding: 18px 0 52px;
    border-bottom: 1px solid rgba(23, 59, 143, 0.13);
}

.join-page-intro h1 {
    max-width: 940px;
    font-size: clamp(38px, 4.8vw, 58px);
    letter-spacing: -0.05em;
}

.join-page-intro p {
    max-width: 720px;
    margin-top: 22px;
    font-size: 16px;
    line-height: 1.9;
}

.join-panel,
.lab-life {
    margin-bottom: 76px;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

.join-panel-heading,
.lab-life-heading {
    grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.65fr);
    align-items: end;
    margin-bottom: 28px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(23, 59, 143, 0.14);
}

.join-panel-heading :is(h1, h2),
.lab-life-heading h2,
.join-contact-panel h2,
.join-dual-heading h2 {
    text-align: left;
}

.join-opportunity-grid {
    gap: 0;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(23, 59, 143, 0.11);
    border-radius: 24px;
    box-shadow: 0 18px 50px rgba(16, 36, 84, 0.055);
}

.join-opportunity-card,
.join-opportunity-primary {
    min-height: 0;
    padding: 32px 34px 34px;
    background: transparent;
    border: 0;
    border-left: 1px solid rgba(23, 59, 143, 0.1);
    border-radius: 0;
}

.join-opportunity-card:first-child {
    border-left: 0;
}

.join-card-index {
    margin-bottom: 38px;
    color: rgba(23, 59, 143, 0.45);
}

.join-opportunity-card h2 {
    margin-bottom: 16px;
    font-size: 22px;
}

.join-opportunity-card > p,
.join-card-note {
    font-size: 14px;
    line-height: 1.78;
}

.join-major-block {
    margin-top: 22px;
    padding-top: 18px;
}

.join-dual-section {
    gap: 0;
    margin: 0 0 76px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(23, 59, 143, 0.11);
    border-radius: 26px;
    box-shadow: 0 18px 50px rgba(16, 36, 84, 0.055);
}

.join-dual-panel {
    min-width: 0;
    padding: 34px 42px;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

.join-dual-panel + .join-dual-panel {
    border-left: 1px solid rgba(23, 59, 143, 0.1);
}

/* 清除旧版独立“我们可以提供”模块遗留的外边距，避免双栏卡片被额外撑高。 */
.join-dual-section .join-support {
    margin-bottom: 0;
}

.join-dual-heading {
    margin-bottom: 12px;
    padding-bottom: 18px;
    border-bottom: 0;
}

.join-dual-heading h2 {
    font-size: clamp(25px, 2.35vw, 31px);
    line-height: 40px;
    letter-spacing: -0.035em;
}

.join-dual-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.join-dual-list li {
    display: block;
    min-height: 0;
    padding: 17px 0;
}

.join-dual-list li:last-child {
    padding-bottom: 0;
}

/* 加入我们页使用无标记清单，避免继承旧版“我们希望你”的圆点样式。 */
.join-dual-list li::before {
    display: none;
}

.join-dual-list p {
    color: #26334d;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.55;
}

.join-support .join-dual-list p {
    white-space: nowrap;
}

.join-contact-panel {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 40px;
    align-items: center;
    margin: 0 0 84px;
    padding: 34px 40px;
    color: var(--site-ink);
    background: linear-gradient(115deg, rgba(232, 239, 255, 0.95), rgba(245, 248, 255, 0.92));
    border: 1px solid rgba(23, 59, 143, 0.12);
    border-radius: 22px;
    box-shadow: none;
}

.join-contact-panel .section-kicker {
    color: var(--site-blue);
}

.join-contact-panel h2 {
    color: var(--site-ink);
    font-size: clamp(27px, 2.8vw, 36px);
}

.join-contact-panel > div:first-child > p {
    max-width: 700px;
    margin-top: 11px;
    color: var(--site-text);
    font-size: 14px;
    line-height: 1.75;
}

.join-contact-action {
    align-items: flex-end;
    gap: 0;
}

.join-contact-panel .join-contact-cta {
    min-width: 150px;
    padding: 12px 20px;
    color: #fff;
    background: var(--site-blue);
    border-color: var(--site-blue);
    box-shadow: none;
}

.lab-life {
    margin-bottom: 0;
}

.lab-life-heading {
    margin-bottom: 30px;
}

.lab-life-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.lab-life-card {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #173b8f;
    border: 0;
    border-radius: 22px;
    box-shadow: 0 16px 38px rgba(14, 33, 77, 0.1);
}

.lab-life-media {
    position: absolute;
    inset: 0;
    aspect-ratio: auto;
    align-items: flex-start;
    padding: 22px;
    background:
        radial-gradient(circle at 78% 18%, rgba(108, 145, 226, 0.55), transparent 36%),
        linear-gradient(145deg, #173679 0%, #3459a8 100%);
}

.lab-life-media::after {
    top: 12%;
    right: -10%;
    width: 54%;
}

.lab-life-media img {
    object-position: center center;
}

.lab-life-card:nth-child(4) .lab-life-media img {
    object-position: center 42%;
}

.lab-life-card:nth-child(5) .lab-life-media img {
    object-position: center 46%;
}

.lab-life-card:nth-child(6) .lab-life-media img {
    object-position: center 45%;
}

.lab-life-copy {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 3;
    min-height: 0;
    padding: 64px 26px 24px;
    color: #fff;
    background: linear-gradient(180deg, transparent 0%, rgba(7, 20, 51, 0.84) 82%);
}

.lab-life-copy > span {
    display: inline-block;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.lab-life-copy h3 {
    margin-bottom: 6px;
    color: #fff;
    font-size: 22px;
}

.lab-life-copy p {
    max-width: 520px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 13px;
    line-height: 1.65;
}

.lab-life-carousel {
    padding: 0;
}

.lab-life-carousel::after {
    z-index: 2;
    pointer-events: none;
}

.lab-life-carousel .lab-life-slide {
    position: absolute;
    inset: 0;
    z-index: 1;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 240ms ease;
}

.lab-life-carousel .lab-life-slide.is-active {
    opacity: 1;
}

.lab-life-carousel-control {
    position: absolute;
    top: 50%;
    z-index: 4;
    display: grid;
    width: 40px;
    height: 40px;
    padding: 0;
    color: #fff;
    font-family: inherit;
    font-size: 34px;
    line-height: 1;
    cursor: pointer;
    background: rgba(12, 31, 74, 0.56);
    border: 1px solid rgba(255, 255, 255, 0.62);
    border-radius: 50%;
    opacity: 0.76;
    place-items: center;
    transform: translateY(-50%);
    transition: opacity 180ms ease, background-color 180ms ease;
}

.lab-life-carousel-prev {
    left: 16px;
}

.lab-life-carousel-next {
    right: 16px;
}

/*
 * 轮播箭头统一使用几何图形绘制，避免 ‹ / › 字符受字体基线影响而偏离圆心。
 * 按钮与箭头分别采用网格居中，确保三个轮播组件的上下、左右对齐一致。
 */
.slider .nav,
.news-carousel-control,
.lab-life-carousel-control {
    --carousel-chevron-size: 11px;
    --carousel-chevron-stroke: 3px;
    display: grid;
    place-items: center;
    padding: 0;
    line-height: 0;
    font-size: 0;
}

.slider .nav::before,
.news-carousel-control::before,
.lab-life-carousel-control::before {
    content: "";
    box-sizing: border-box;
    width: var(--carousel-chevron-size);
    height: var(--carousel-chevron-size);
    border: solid currentColor;
    border-width: 0 var(--carousel-chevron-stroke) var(--carousel-chevron-stroke) 0;
    transform-origin: 50% 50%;
}

.slider .nav.prev::before,
.news-carousel-prev::before,
.lab-life-carousel-prev::before {
    transform: rotate(135deg);
}

.slider .nav.next::before,
.news-carousel-next::before,
.lab-life-carousel-next::before {
    transform: rotate(-45deg);
}

.slider .nav > span[aria-hidden="true"],
.news-carousel-control > span[aria-hidden="true"],
.lab-life-carousel-control > span[aria-hidden="true"] {
    display: none;
}

.lab-life-carousel-control:hover,
.lab-life-carousel-control:focus-visible {
    background: rgba(12, 31, 74, 0.82);
    outline: none;
}

.lab-life-card:hover .lab-life-carousel-control,
.lab-life-carousel:focus-within .lab-life-carousel-control,
.lab-life-carousel:focus .lab-life-carousel-control {
    opacity: 1;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.lab-life-placeholder {
    box-shadow: none;
}

.lab-life-placeholder .lab-life-media {
    justify-content: space-between;
}

.lab-life-placeholder .lab-life-media > span {
    font-size: 21px;
}

.lab-life-placeholder .lab-life-copy {
    background: linear-gradient(180deg, transparent 0%, rgba(7, 20, 51, 0.45) 100%);
}

@media (max-width: 991px) {
    .join-opportunity-grid {
        grid-template-columns: 1fr;
    }

    .join-opportunity-card,
    .join-opportunity-card:first-child {
        border-left: 0;
        border-top: 1px solid rgba(23, 59, 143, 0.1);
    }

    .join-opportunity-card:first-child {
        border-top: 0;
    }

    .join-opportunity-primary {
        grid-column: auto;
    }

    .join-dual-panel + .join-dual-panel {
        border-top: 1px solid rgba(23, 59, 143, 0.1);
        border-left: 0;
    }

    .join-support .join-dual-list p {
        white-space: normal;
    }

    .join-contact-panel {
        grid-template-columns: 1fr auto;
    }

    .join-contact-action {
        padding-top: 0;
        border-top: 0;
    }
}

@media (max-width: 767px) {
    .join-page {
        padding: 48px 0 64px;
    }

    .join-page-intro {
        margin-bottom: 48px;
        padding: 8px 0 38px;
    }

    .join-panel,
    .lab-life {
        margin-bottom: 56px;
        padding: 0;
        border-radius: 0;
    }

    .join-panel-heading,
    .lab-life-heading {
        grid-template-columns: 1fr;
        gap: 12px;
        margin-bottom: 22px;
        padding-bottom: 18px;
    }

    .join-opportunity-grid,
    .join-dual-section {
        border-radius: 18px;
    }

    .join-opportunity-card,
    .join-dual-panel {
        padding: 26px 24px;
    }

    .join-card-index {
        margin-bottom: 24px;
    }

    .join-dual-section {
        margin-bottom: 56px;
    }

    .join-dual-list li {
        padding: 18px 0;
    }

    .join-support .join-dual-list p {
        white-space: normal;
    }

    .join-contact-panel {
        grid-template-columns: 1fr;
        margin-bottom: 60px;
        padding: 28px 24px;
        border-radius: 18px;
    }

    .join-contact-action {
        align-items: flex-start;
        padding-top: 16px;
        border-top: 1px solid rgba(23, 59, 143, 0.12);
    }

    .lab-life-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .lab-life-card {
        border-radius: 18px;
    }

    .lab-life-copy {
        padding: 56px 22px 21px;
    }

    .lab-life-carousel-control {
        width: 38px;
        height: 38px;
        opacity: 1;
    }
}

@media (hover: none) {
    .lab-life-carousel-control {
        opacity: 1;
    }
}

@media (prefers-reduced-motion: reduce) {
    .lab-life-carousel .lab-life-slide,
    .lab-life-carousel-control {
        transition: none;
    }
}

/* ===== 统一响应式页眉与移动导航 ===== */
.mobile-language-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--site-line);
    background: var(--site-blue-soft);
}

.mobile-language-label {
    margin-right: auto;
    color: var(--site-muted);
    font-size: 14px;
    font-weight: 650;
}

.mobile-language-switch .lang-switch {
    min-width: 66px;
    min-height: 38px;
    padding: 7px 12px;
    color: var(--site-blue);
    font: inherit;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.2;
    background: #fff;
    border: 1px solid rgba(23, 59, 143, 0.2);
    border-radius: 9px;
    cursor: pointer;
    transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease, transform 120ms var(--ease-out-ui);
}

.mobile-language-switch .lang-switch.active {
    color: #fff;
    background: var(--site-blue);
    border-color: var(--site-blue);
    text-decoration: none;
}

.mobile-language-switch .lang-switch:active {
    transform: scale(0.97);
}

.header-title-compact {
    display: none;
}

body.nav-open {
    overflow: hidden;
}

.nav ul li a {
    white-space: nowrap;
}

@media (max-width: 1100px) {
    .header {
        position: relative;
        top: auto;
        height: 72px;
    }

    .header .container {
        height: 72px;
        padding-top: 0;
        padding-bottom: 0;
        flex-wrap: nowrap;
    }

    .logo {
        flex: 1 1 auto;
        min-width: 0;
        max-width: calc(100% - 50px);
        height: 72px;
    }

    .logo a,
    .header-title {
        min-width: 0;
    }

    .header-title {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .nav {
        display: none;
    }

    .model-navbtn {
        display: block;
        flex: 0 0 38px;
        margin-left: 12px;
    }

    .opacity2 {
        z-index: 1100;
    }

    .model-leftnav {
        z-index: 1110;
    }
}

@media (max-width: 767px) {
    .header,
    .header .container,
    .logo {
        height: 68px;
    }

    .logo img {
        width: clamp(112px, 32vw, 142px);
        height: 52px;
    }

    .header-title {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .header-title-full {
        display: none;
    }

    .header-title-compact {
        display: inline;
    }
}

@media (max-width: 360px) {
    .logo img {
        width: 104px;
    }

    .header-title {
        font-size: 13px;
        letter-spacing: -0.02em;
    }
}

/* ===== 首页首屏：平板与手机采用不同的内容密度 ===== */
.slider {
    height: min(31.25vw, 450px);
    touch-action: pan-y;
}

@media (min-width: 768px) and (max-width: 1100px) {
    /* 两张合成图均为 16:5；平板按原始比例展示，避免 contain 产生上下空场。 */
    .slider {
        height: 31.25vw;
        min-height: 240px;
        max-height: 344px;
    }

    .slider .nav {
        width: 40px;
        height: 40px;
    }

    .slider .nav.prev {
        left: 14px;
    }

    .slider .nav.next {
        right: 14px;
    }

    .dots {
        bottom: 10px;
    }

    .home-intro {
        padding: 42px 0 64px;
    }

    .intro-heading {
        margin-bottom: 24px;
    }

    .intro-heading > .section-kicker {
        margin-bottom: 10px;
    }

    .intro-heading h1 {
        font-size: 34px;
    }

    .home-intro .intro-text p {
        font-size: 16px;
        line-height: 1.8;
        text-align: left;
    }

    .home-intro .intro-text p + p {
        margin-top: 16px;
    }

    .intro-invitation {
        margin-top: 30px;
    }
}

@media (max-width: 767px) {
    .slider {
        height: clamp(150px, 42vw, 190px);
    }

    .slider .nav {
        display: none;
    }

    .dots {
        bottom: 6px;
    }

    .home-intro {
        padding: 34px 0 52px;
    }

    .intro-heading {
        margin-bottom: 20px;
    }

    .intro-heading > .section-kicker {
        margin-bottom: 9px;
        font-size: 12px;
    }

    .intro-heading h1 {
        font-size: 28px;
    }

    .home-intro .intro-text p {
        font-size: 15.5px;
        line-height: 1.78;
        text-align: left;
    }

    .home-intro .intro-text p + p {
        margin-top: 15px;
    }

    .intro-invitation {
        margin-top: 28px;
        padding: 22px 18px;
    }
}

@media (max-width: 380px) {
    .slider {
        height: 150px;
    }
}

/* 固定页头下的分组锚点需要预留滚动空间。 */
#graduate-heading,
#undergraduate-heading,
#alumni-heading {
    scroll-margin-top: 116px;
}

@media (max-width: 1100px) {
    #graduate-heading,
    #undergraduate-heading,
    #alumni-heading {
        scroll-margin-top: 88px;
    }
}

@media (max-width: 767px) {
    #graduate-heading,
    #undergraduate-heading,
    #alumni-heading {
        scroll-margin-top: 20px;
    }
}