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

:root {
    --primary-color: #0066cc;
    --secondary-color: #003d7a;
    --accent-color: #00a8e8;
    --text-dark: #222;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    padding: 15px 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lab-text {
    display: flex;
    flex-direction: column;
}

.lab-name-en {
    font-size: 14px;
    color: #003d7a;
    letter-spacing: 0.5px;
}

.logo1 {
    width: 65px;
    height: 65px;
    /* background: linear-gradient(135deg, var(--primary-color), var(--accent-color)); */
    border-radius: 12px;
}

.logo {
    width: 230px;
    height: 76px;
    /* background: linear-gradient(135deg, var(--primary-color), var(--accent-color)); */
    border-radius: 12px;
}

.lab-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--secondary-color);
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    flex: 1 1 auto;
    justify-content: flex-end;
    flex-wrap: wrap;
    column-gap: 12px;
    row-gap: 10px;
}

.nav-menu li a {
    display: block;
    padding: 11px 19px;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 19px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background: var(--primary-color);
    color: white;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: all 0.3s ease;
}

@media (max-width: 1280px) {
    .navbar .container {
        gap: 14px;
    }

    .logo1 {
        width: 56px;
        height: 56px;
    }

    .logo {
        width: 188px;
        height: 63px;
    }

    .lab-name {
        font-size: 18px;
    }

    .lab-name-en {
        font-size: 13px;
    }

    .nav-menu li a {
        padding: 10px 16px;
        font-size: 17px;
    }
}

/* 响应式导航 */
@media (max-width: 768px) {
    .nav-menu {
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        flex-direction: column;
        justify-content: flex-start;
        background: white;
        box-shadow: var(--shadow);
        padding: 20px;
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .news-page-section .news-page-item {
        grid-template-columns: 22px 1fr;
        gap: 14px;
    }

    .news-page-section .news-page-list {
        padding-left: 22px;
    }

    .news-page-section .news-page-list::before {
        left: 8px;
    }

    .news-page-section .news-page-dot {
        width: 16px;
        height: 16px;
        border-width: 3px;
    }

    .news-page-section .news-page-date-text {
        font-size: 18px;
    }

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

    .news-page-section .news-page-excerpt {
        font-size: 16px;
    }

    .projects-page-section .projects-list-grid .project-image-pair {
        grid-template-columns: 1fr;
        gap: 14px;
    }
}

/* 横幅轮播 */
.hero-section {
    position: relative;
    height: 600px;
    margin-top: 80px;
    overflow: hidden;
}

.hero-slider {
    position: relative;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    /* background-image: url("building.png"); */
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.hero-slide:nth-child(1) {
    background: linear-gradient(135deg, #0066cc 0%, #003d7a 100%);
}

.hero-slide:nth-child(2) {
    background: linear-gradient(135deg, #00a8e8 0%, #0066cc 100%);
}

.hero-slide:nth-child(3) {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.hero-slide.active {
    opacity: 1;
    z-index: 1;
    /* background-image: url("building.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat; */
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
}

.hero-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: 0 20px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 22px;
    margin-bottom: 40px;
    opacity: 0.95;
    /* color: #ffffff;
    text-shadow:
        0 0 6px rgba(255,255,255,0.4),
        0 4px 12px rgba(0,0,0,0.6); */
}

.hero-btn {
    display: inline-block;
    padding: 15px 40px;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
}

.achievements-more {
    text-align: center;
}

.container_more {
    text-align: center;
}

.hero-btn1 {
    display: inline-block;
    padding: 15px 40px;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* 动画效果 */
.animate-fade-in {
    animation: fadeIn 1s ease-out;
}

.animate-fade-in-delay {
    animation: fadeIn 1s ease-out 0.3s both;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 1s ease-out 0.6s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 轮播控制按钮 */
.slider-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
    z-index: 3;
}

.slider-prev,
.slider-next {
    background: rgba(255, 255, 255, 0.3);
    border: none;
    color: white;
    font-size: 40px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.slider-prev:hover,
.slider-next:hover {
    background: rgba(255, 255, 255, 0.5);
}

.slider-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 3;
}

.indicator {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: white;
    width: 30px;
    border-radius: 6px;
}

/* 通用section样式 */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.title-underline {
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    margin: 0 auto 20px;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
}

/* 实验室简介上方图片滑动区 */
.intro-slider-section {
    padding: 18px 0 18px;
    background: #f7f9fc;
}

.intro-slider {
    overflow: hidden;
    width: 99%;
    margin: 0 auto;
    border-radius: 16px;
    box-shadow: 0 10px 26px rgba(17, 42, 76, 0.1);
}

.intro-slider-track {
    display: flex;
    gap: 14px;
    align-items: stretch;
    width: max-content;
    animation: intro-slider-scroll 30s linear infinite;
}

.intro-slider:hover .intro-slider-track {
    animation-play-state: paused;
}

.intro-slide-image {
    flex: 0 0 clamp(340px, 44vw, 560px);
    width: clamp(340px, 44vw, 560px);
    height: clamp(250px, 31vw, 400px);
    object-fit: cover;
    object-position: center;
    display: block;
}

.intro-slide-image--pic2 {
    object-position: 36% 20%;
}

@keyframes intro-slider-scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* 实验室简介 */
.intro-section {
    background: var(--bg-light);
}

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

.intro-text p.intro-lead {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 25px;
    font-weight: 500;
}

/* 后续添加 */
.intro-text p.intro-justify {
    font-size: 18px;
    line-height: 1.9;
    text-align: justify;
    text-justify: inter-ideograph;
}

.intro-text p.intro-justify {
    font-size: 18px;
    line-height: 1.9;
    text-align: justify;
    text-justify: inter-ideograph;
}

.dot {
    display: inline-block;
    width: 8px;           /* 圆点直径 */
    height: 8px;
    background-color: #333;
    border-radius: 50%;
    margin-right: 9px;
    vertical-align: middle;
}

.hang-item {
    display: inline-block;
    padding-left: 20px;     /* 悬挂宽度 */
    text-indent: -20px;    /* 悬挂缩进关键 */
    line-height: 1.8;
}

/* 结束 */

.intro-text p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 40px;
    line-height: 1.8;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    color: var(--text-light);
}

/* 研究方向 */
.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.research-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.research-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.card-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.card-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.card-description {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.card-points {
    list-style: none;
}

.card-points li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--text-light);
    font-size: 15px;
}

.card-points li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 团队介绍 */
.team-section {
    background: var(--bg-light);
}

.team-page-section {
    margin-top: 80px;
    padding-top: 80px;
}

.cooperation-page-section {
    margin-top: 80px;
    padding-top: 80px;
}

.cooperation-page-section .cooperation-text h3 {
    font-size: 27px;
}

.cooperation-page-section .cooperation-text > p {
    font-size: 19px;
    line-height: 1.9;
}

.cooperation-page-section .section-header {
    margin-bottom: 48px;
}

.news-page-section {
    margin-top: 80px;
    padding-top: 80px;
}

.team-subsection-header {
    margin-top: 80px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.team-member {
    background: white;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.member-photo {
    width: 150px;
    height: 150px;
    margin: 0 auto 20px;
    border-radius: 80%;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: white;
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 30%;
}

.member-name {
    font-size: 18px;
    font-weight: 650;
    color: var(--secondary-color);
    margin-bottom: 11px;
    white-space: normal;
    overflow-wrap: break-word;
}

.member-one {
    font-size: 18px;
    font-weight: 650;
    color: var(--secondary-color);
    margin-bottom: 18px;
}

.member-title {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.member-bio {
    font-size: 14px;
    text-align: center;
    color: var(--text-light);
    line-height: 1.6;
}

/* 研究成果 */
.achievements-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 30px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-dark);
}

.tab-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.tab-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.achievement-list {
    max-width: 900px;
    margin: 0 auto;
}

.achievement-item {
    display: flex;
    gap: 30px;
    padding: 30px;
    background: white;
    border-radius: 15px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.achievement-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-hover);
}

.achievement-year {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    min-width: 80px;
}

.achievement-details h4 {
    font-size: 20px;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.achievement-authors {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 5px;
}

.achievement-venue {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 10px;
}

.achievement-tag {
    display: inline-block;
    padding: 5px 15px;
    background: var(--bg-light);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

/* 代表性项目 */
.news-section {
    background: var(--bg-light);
}

.projects-page-section {
    margin-top: 80px;
    padding-top: 80px;
}

.news-page-section .news-page-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 1280px;
    margin: 0 auto;
    position: relative;
    padding-left: 56px;
}

.news-page-section .news-page-list::before {
    content: "";
    position: absolute;
    top: 8px;
    bottom: 26px;
    left: 15px;
    width: 2px;
    background: #cfd6df;
}

.news-page-section .news-page-item {
    display: grid;
    grid-template-columns: 28px 1fr;
    gap: 18px;
    align-items: start;
    position: relative;
}

.news-page-section .news-page-marker {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding-top: 8px;
    position: relative;
    z-index: 2;
}

.news-page-section .news-page-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 3px solid #2f80ed;
    background: white;
    display: block;
}

.news-page-section .news-page-body {
    padding-bottom: 16px;
}

.news-page-section .news-page-date-text {
    margin-bottom: 8px;
    color: #2f80ed;
    font-size: 18px;
    font-weight: 500;
    line-height: 1.2;
}

.news-page-section .news-page-title {
    margin-bottom: 10px;
    font-size: 24px;
    line-height: 1.32;
}

.news-page-section .news-page-title a {
    color: #1f1f1f;
    text-decoration: none;
}

.news-page-section .news-page-title a:hover {
    color: #2f80ed;
}

.news-page-section .news-page-excerpt {
    font-size: 18px;
    line-height: 1.75;
    color: #333;
    margin-bottom: 12px;
}

.news-page-section .news-page-link {
    color: #2f80ed;
    font-size: 18px;
    font-weight: 500;
    text-decoration: none;
}

.news-page-section .news-page-link:hover {
    text-decoration: underline;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(600px, 2fr));
    gap: 30px;
}

.projects-page-section .projects-list-grid {
    grid-template-columns: 1fr;
}

.projects-page-section .news-img1,
.projects-page-section .news-img2 {
    max-width: 560px;
    height: 350px;
    margin-left: auto;
    margin-right: auto;
}

.projects-page-section .news-img3 {
    max-width: 560px;
    height: 330px;
    margin-left: auto;
    margin-right: auto;
}

.projects-page-section .projects-list-grid .project-image-pair {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
    align-items: start;
}

.projects-page-section .projects-list-grid .project-image-pair img {
    width: 100%;
    max-width: none;
    margin: 0;
}

.news-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    display: flex;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

/* .news-image {
    position: relative;
    height: 220px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    overflow: hidden;
} */
.news-img1 {
    width: 100%;
    height: 320px;          /* 可按需要改 */
    object-fit: cover;     /* 防止图片变形 */
    display: block;
    margin-top: auto;
}

.news-img2 {
    width: 100%;
    height: 320px;          /* 与 news-img1 保持一致 */
    object-fit: cover;     /* 防止图片变形 */
    display: block;
    margin-top: auto;
}

.news-img3 {
    width: 100%;
    height: 275px;          /* 可按需要改 */
    object-fit: cover;     /* 防止图片变形 */
    display: block;
    margin-top: auto;
}

.news-image img {
    width: 120%;
    height: 110%;
    object-fit: cover;
}

.news-date {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255, 255, 255, 0.95);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
}

.news-content {
    padding: 25px;
    display: flex;
    flex-direction: column;
    width: 100%;
}

.news-title {
    font-size: 25px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 15px;
    line-height: 1.4;
}

.news-excerpt {
    font-size: 18px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 15px;
    text-align: justify;
    text-justify: inter-ideograph;
}

.news-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
}

.news-link:hover {
    color: var(--accent-color);
}

/* 合作交流 */
.cooperation-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 50px;
}

/* .cooperation-content p.intro-lead {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 25px;
    font-weight: 500;
} */


.cooperation-text h3 {
    font-size: 25px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.cooperation-text > p {
    font-size: 18px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 18px;
}

.cooperation-types {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.coop-type {
    padding: 25px;
    background: var(--bg-light);
    border-radius: 15px;
    border-left: 4px solid var(--primary-color);
}

.coop-type h4 {
    font-size: 20px;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.coop-type p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.6;
}

.cooperation-partners h3 {
    font-size: 28px;
    color: var(--secondary-color);
    margin-bottom: 30px;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.partner-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow);
    font-weight: 700;
    font-size: 18px;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.partner-logo:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-hover);
}

/* 页脚 */
.footer {
    background: var(--secondary-color);
    color: white;
    padding: 40px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 60px;
    margin-bottom: 0;
}

.footer-section:first-child {
    text-align: left;
}

.footer-section:last-child {
    text-align: left;
}



/* .footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 50px;
    margin-bottom: 20px;
    justify-content: space-around;
} */

.footer-section h4 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.footer-section p {
    font-size: 15px;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 10px;
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 24px;
}

.footer-section ul li {
    margin-bottom: 0;
}

.footer-section ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: all 0.3s ease;
}

.footer-section ul li a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-icon {
    display: inline-block;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    opacity: 0.8;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    box-shadow: var(--shadow-hover);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--accent-color);
    transform: translateY(-5px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 42px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .cooperation-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-section {
        height: 500px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .section-title {
        font-size: 32px;
    }

    .intro-slider {
        width: calc(100% - 24px);
        margin: 0 auto;
    }

    .intro-slide-image {
        flex-basis: clamp(280px, 84vw, 400px);
        width: clamp(280px, 84vw, 400px);
        height: clamp(200px, 56vw, 290px);
    }

    .research-grid,
    .team-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .achievement-item {
        flex-direction: column;
        gap: 15px;
    }

    .partners-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .lab-name {
        font-size: 16px;
    }

    .hero-title {
        font-size: 26px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

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

    .stat-number {
        font-size: 36px;
    }
}


/* ################################ */
/* Tabs bar */
.achievements-sections {
  padding-top: 130px;   /* 原来可能是 40px，可以加大 */
}


.subtabs{
  display:flex;
  gap:22px;
  padding: 8px 0 14px;
  border-bottom: 1px solid #e5e7eb;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.subtabs .tab{
  border:none;
  background:transparent;
  padding: 10px 4px;
  font-size: 16px;
  color:#374151;
  cursor:pointer;
  position:relative;
}
.subtabs .tab.active{
  color:#2563eb;
  font-weight:700;
}
.subtabs .tab.active::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-14px;
  height:2px;
  background:#2563eb;
}

/* Header row */
.list-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding: 10px 20px;
  background:#f9fafb;
  border:1px solid #eef2f7;
  border-radius:10px;
  margin-bottom: 8px;
}
.list-header .h-left{font-weight:700; color:#111827;}
.list-header .h-right{font-weight:700; color:#111827;}

/* List items (like screenshot) */
.tab-panel{display:none;}
.tab-panel.active{display:block;}

.list-item{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding: 16px 20px;
  border-bottom: 1px solid #eef2f7;
}
.item-main{flex: 1 1 auto; min-width: 0;}
.authors{
  color:#374151;
  font-size:13px;
  line-height:1.5;
  margin-bottom:6px;
  word-break: break-word;
}
.title{
  color:#111827;
  font-weight:800;
  font-size:15px;
  line-height:1.5;
  margin-bottom:6px;
}
.meta{
  color:#6b7280;
  font-size:13px;
}

.h-right,
.item-actions{
  flex: 0 0 auto;
  display:flex;
  align-items:center;
  gap:10px;
  /* padding-right: 50px; */
  margin-right: 50px; 
  white-space:nowrap;
}
.action{
  text-decoration:none;
  font-size:14px;
  font-weight:700;
  color:#2563eb;
}
.action.download{color:#2563eb;}
/* .action.detail{color:#2563eb;} */
.action.detail{
  display: block;
  color:#040404;
  margin-top: 5px;
  transform: translateX(25px);}

.action:hover{text-decoration:underline;}


.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* ############# */
.item-actions {
  display: flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
}

.divider {
  color: #48494a;   /* 淡灰色 */
  font-size: 15px;
}

.action.download {
  color: #2563eb;
  font-weight: 500;
  text-decoration: none;
}

.action.download:hover {
  text-decoration: underline;
}


.list-header {
  position: relative;
}

.h-right {
  position: relative;
  padding-left: 20px;   /* 给竖线留空间 */
}

/* 竖线 */
.h-right::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 16px;
  background-color: #cacbcd;  /* 淡灰色 */
}



/* ##############team */

.team-title {
  text-align: center;      /* 水平居中 */
  font-size: 36px;
  font-weight: 800;
  margin: 80px 0 50px;     /* 👈 上下间距 */
  color: #111;
}

.team-section {
  padding: 80px 0 80px;   /* 👈 上下留白更大 */
}

.team-photo {
    width: 100%;
    max-width: 200px;
    aspect-ratio: 3/4;
    object-fit: cover;
    display: block;
    margin: 0 auto 10px;
}

.team-card {
    text-align: center;   /* 👈 关键：让文字居中 */
}

.team-name {
    font-size: 22px;     /* 👈 调大字体 */
    font-weight: 900;    /* 更粗 */
    color: #222;         /* 深一点更醒目 */
    margin-bottom: 10px;
}

.authors,
.title {
  word-wrap: break-word;
  word-break: break-word;
  white-space: normal;
}

.item-main {
  max-width: 800px;
}

.title {
  font-weight: bold;
  margin-top: 5px;
}