/* Base Styles */
:root {
    /* Modern Palette */
    --primary-color: #BD384B;
    --primary-light: #e6a7b0;
    --primary-dark: #8a2533;
    --secondary-color: #faf8f9;

    --bg-color: #faf8f9;
    --text-color: #1a1a1a;
    --light-text: #666666;
    --border-color: #eaeaea;

    --section-spacing: 6rem;
    --timeline-color: #f0f0f0;
    --max-width: 1280px;

    /* Effects */
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.05);
    --backdrop-blur: 12px;

    --transition: cubic-bezier(0.4, 0, 0.2, 1) 0.3s;
}

/* Glassmorphism Utility */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--backdrop-blur));
    -webkit-backdrop-filter: blur(var(--backdrop-blur));
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.chinese-text {
    font-family: "楷体", KaiTi, "华文楷体", "STKaiti", serif;
}

html {
    scroll-behavior: smooth;
    /* 添加平滑滚动效果 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

body {
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-color);
}

/* Header Styles */
header {
    padding: 3rem 0;
    background-color: var(--secondary-color);
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.profile-info {
    flex: 2;
}

.profile-info h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    margin-top: 3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.profile-image {
    flex: 1;
    text-align: right;
    position: relative;
    width: 180px;
    height: 180px;
    margin-left: auto;
}

#profile-img {
    width: 180px;
    height: 180px;
    border-radius: 4px;
    object-fit: cover;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    background-image: url('assets/profile.jpg');
    background-size: cover;
    background-position: center;
}

.profile-image::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 180px;
    height: 180px;
    background-image: url('assets/profile2.png');
    background-size: cover;
    background-position: center;
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.profile-image:hover::after {
    opacity: 1;
}

.profile-image:hover #profile-img {
    opacity: 0;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--light-text);
    margin-bottom: 1.5rem;
}

.chinese-lab-name {
    font-size: 1.5rem;
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.contact-info p {
    display: flex;
    align-items: center;
    margin: 0;
    flex-shrink: 0;
}

.contact-info i {
    color: var(--primary-color);
    font-size: 1.8rem;
}

.contact-info a {
    padding: 8px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 25px !important;
    transition: all 0.3s ease;
    background-color: rgba(189, 56, 75, 0.1);
    width: auto;
    min-width: 60px;
    height: 50px;
}

.contact-info a:hover {
    background-color: rgba(189, 56, 75, 0.2);
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.icon-svg {
    width: 1.8rem;
    height: 1.8rem;
    filter: invert(26%) sepia(92%) saturate(1361%) hue-rotate(212deg) brightness(92%) contrast(90%);
}

/* Navigation Styles */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 0.5rem 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: transparent;
}

nav.scrolled {
    padding: 0.4rem 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    height: 40px;
}

.logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
    /* Default for transparent header on dark hero */
    text-decoration: none;
    letter-spacing: -0.5px;
    transition: color 0.3s ease;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    /* Legibility on hero */
}

/* Scrolled state text color */
nav.scrolled .logo-text {
    color: var(--primary-color);
    text-shadow: none;
}

nav.scrolled .nav-links a {
    color: var(--text-color);
}

nav.scrolled .nav-links a.active,
nav.scrolled .nav-links a:hover {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    overflow-x: auto;
    scrollbar-width: none;
    /* Firefox */
    -ms-overflow-style: none;
    /* IE and Edge */
}

.nav-links li {
    margin-right: 2rem;
}

.nav-links a {
    display: inline-block;
    height: 50px;
    line-height: 50px;
    font-weight: 500;
    position: relative;
    color: rgba(255, 255, 255, 0.9);
    /* White text normally */
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.nav-links a.active {
    color: white;
    font-weight: 700;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 10px;
    /* Moved up slightly */
    left: 0;
    width: 0;
    height: 3px;
    background-color: white;
    /* White underline */
    transition: width 0.3s ease;
}

.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Mobile Navigation Menu */
.menu-toggle {
    display: none;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 1000;
        background-color: #fff;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        overflow: hidden;
    }

    body {
        padding-top: 70px;
        /* 更新以适应更高的导航栏 */
    }

    .nav-links {
        display: flex;
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        /* Firefox */
        -ms-overflow-style: none;
        /* IE and Edge */
        white-space: nowrap;
        padding: 0.5rem 0;
        height: auto;
        width: 100%;
        margin: 0;
    }

    .nav-links::-webkit-scrollbar {
        display: none;
        /* Chrome, Safari, Opera */
    }

    nav .container {
        padding: 0;
        position: relative;
    }

    .nav-logo {
        height: 35px;
        /* 手机上稍微减小logo大小 */
    }

    .nav-links li {
        display: inline-block;
        margin: 0 0.8rem;
        flex-shrink: 0;
    }

    .nav-links li:first-child {
        margin-left: 15px;
    }

    .nav-links li:last-child {
        margin-right: 15px;
        padding-right: 5px;
        /* Add a bit of padding at the end for better scrolling */
    }

    .nav-links a {
        height: auto;
        line-height: normal;
        padding: 0.5rem 0;
        font-size: 0.95rem;
        white-space: nowrap;
    }

    /* Add gradient indicators to show there's more content */
    nav .container::before,
    nav .container::after {
        content: '';
        position: absolute;
        top: 0;
        bottom: 0;
        width: 20px;
        z-index: 10;
        pointer-events: none;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    nav .container::before {
        left: 0;
        background: linear-gradient(to right, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0));
    }

    nav .container::after {
        right: 0;
        background: linear-gradient(to left, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0));
    }

    /* Only show gradients if has-scroll class is present */
    nav .container.has-scroll::before,
    nav .container.has-scroll::after {
        opacity: 1;
    }

    .section {
        padding: 3rem 0;
    }

    #profile-img {
        width: 150px;
        height: 150px;
    }

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

    .gallery-container {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }

    /* Hide timeline elements on mobile */
    .timeline {
        padding-left: 0;
    }

    .timeline::before {
        display: none;
    }

    .timeline-marker {
        display: none;
    }

    .edu-content-wrapper {
        flex-direction: column;
        align-items: flex-start;
    }

    .edu-text {
        padding-right: 0;
        margin-bottom: 1rem;
    }

    .school-logo {
        align-self: center;
    }

    .edu-logo {
        width: 80px;
    }

    .honor-item {
        flex-direction: column;
    }

    .honor-year {
        margin-bottom: 0.75rem;
        margin-right: 0;
    }

    .news-item {
        flex-direction: column;
    }

    .news-date {
        margin-right: 0;
        margin-bottom: 1rem;
    }

    .service-list {
        gap: 0.5rem;
    }

    .service-list li {
        font-size: 0.85rem;
        padding: 0.4rem 0.8rem;
    }

    .address-info p {
        font-size: 1rem;
    }

    .address-description {
        font-size: 0.9rem !important;
    }
}

@media (max-width: 576px) {
    nav {
        padding: 0.3rem 0;
    }

    body {
        padding-top: 42px;
        /* Adjust padding for smaller screens */
    }

    .nav-links {
        padding: 0.3rem 0;
    }

    .nav-links li {
        margin: 0 0.6rem;
    }

    .nav-links li:first-child {
        margin-left: 10px;
    }

    .nav-links li:last-child {
        margin-right: 10px;
    }

    .nav-links a {
        font-size: 0.9rem;
        padding: 0.4rem 0;
    }

    .container nav::before,
    .container nav::after {
        width: 20px;
    }

    .contact-info {
        flex-direction: row;
        gap: 0.5rem;
        justify-content: flex-start;
        margin-bottom: 1rem;
    }

    .contact-info a {
        width: 38px;
        height: 38px;
        padding: 6px;
    }

    .contact-info i {
        font-size: 1.5rem;
    }

    .icon-svg {
        width: 1.5rem;
        height: 1.5rem;
    }

    .skill-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .skill-name {
        margin-bottom: 0.5rem;
    }

    .gallery-container {
        grid-template-columns: 1fr;
    }

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

    .contact-social {
        grid-column: span 1;
    }

    .nav-logo {
        height: 30px;
        /* 更小的屏幕上进一步减小logo大小 */
    }

    .nav-links {
        height: auto;
        padding: 5px 0;
    }

    .nav-links li {
        margin: 0 10px;
    }

    .nav-links a {
        font-size: 0.9rem;
        padding: 8px 0;
    }
}

/* Section Styles */
.section {
    padding: var(--section-spacing) 0;
    border-bottom: 1px solid var(--border-color);
}

/* Full width section style */
.full-width-section {
    padding: 0;
    margin: 0;
    width: 100%;
    max-width: 100%;
    margin-bottom: 0;
}

.full-width-section .container {
    width: 100%;
    max-width: 100%;
    padding: 0;
    margin: 0;
    position: relative;
}

/* Remove top padding from the header when it follows the slideshow */
#slideshow+header {
    padding-top: 0;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
}

/* About Section */
.about-content {
    font-size: 1.1rem;
}

/* News Section */
.news-container,
.news-list {
    margin-top: 2rem;
}

.news-item {
    display: flex;
    margin-bottom: 1rem;
    padding: 0.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.2s ease;
    border-radius: 4px;
    background-color: transparent;
    box-shadow: none;
}

.news-item:hover {
    transform: translateX(5px);
    background-color: rgba(189, 56, 75, 0.05);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.news-item:last-child {
    border-bottom: none;
}

.news-date {
    min-width: 160px;
    width: 160px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-right: 15px;
    flex-shrink: 0;
    display: flex;
    align-items: flex-start;
    padding-top: 2px;
}

.date-highlight,
.year-highlight {
    background-color: rgba(189, 56, 75, 0.1);
    padding: 5px 18px;
    border-radius: 25px;
    display: inline-block;
    font-size: 0.9rem;
    width: 140px;
    text-align: center;
    box-sizing: border-box;
}

.news-content {
    flex: 1;
}

.news-content h3 {
    font-size: 1rem;
    margin-bottom: 0.3rem;
    color: var(--text-color);
}

.news-content p {
    color: var(--light-text);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.news-content a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.news-content a:hover {
    text-decoration: underline;
}

.view-all-news,
.back-to-home {
    margin-top: 2rem;
    text-align: center;
}

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

.mt-4 {
    margin-top: 2rem;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.3s;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

/* Media queries for news items */
@media (max-width: 768px) {
    .news-item {
        flex-direction: column;
    }

    .news-date {
        margin-right: 0;
        margin-bottom: 1rem;
    }
}

/* Research Areas — styles now in inline <style> block in index.html */

/* Education Timeline */
.timeline {
    position: relative;
    margin: 2rem 0;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 9px;
    top: 0;
    height: 100%;
    width: 2px;
    background-color: #d0d0d0;
    z-index: 0;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 8px;
    padding: 20px;
    background-color: transparent;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.timeline-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    background-color: #fff;
}

.timeline-marker {
    position: absolute;
    top: 20px;
    left: -29.5px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--primary-color);
    z-index: 2;
}

.timeline-content {
    flex: 1;
}

.edu-content-wrapper {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.edu-text {
    flex: 1;
    padding-right: 1rem;
}

.school-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.edu-logo {
    width: 100px;
    height: auto;
    border-radius: 30px;
    object-fit: contain;
}

.timeline-content h3 {
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.timeline-date {
    font-weight: 500;
    color: var(--light-text);
    margin-bottom: 1rem;
}

/* Publications */
.publication-filter {
    margin-bottom: 2rem;
    display: flex;
    gap: 1rem;
}

.section-description {
    font-size: 1.1rem;
    color: var(--light-text);
    margin-bottom: 2rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.3s ease;
}

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

.publications-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.publication {
    display: flex;
    background-color: var(--secondary-color);
    border-radius: 20px;
    overflow: hidden;
    transition: transform 0.3s ease;
    position: relative;
}

/* Subtle left border for first-author papers */
.publication.first-author {
    border-left: 3px solid var(--primary-color);
    border-radius: 20px;
}

.publication:hover {
    transform: translateX(5px);
}

.pub-venue-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 160px;
    background-color: var(--background-color);
    color: var(--primary-color);
    text-align: center;
    padding: 0.7rem 0.4rem;
    border-radius: 20px;
}

.pub-number {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.3rem;
}

.venue-text {
    font-size: 0.95rem;
    line-height: 1.2;
    font-weight: 800;
    /* text-transform: uppercase; */
    word-break: break-word;
    hyphens: auto;
    display: block;
    white-space: normal;
}

.pub-content {
    padding: 1rem 1.2rem;
    flex: 1;
    padding-right: 120px;
}

.pub-content h3 {
    font-size: 1rem;
    margin-bottom: 0.4rem;
}

.authors {
    font-size: 0.85rem;
    margin-bottom: 0.4rem;
}

.venue {
    font-size: 0.85rem;
    font-style: italic;
    color: var(--light-text);
    margin-bottom: 0.5rem;
}

.pub-tags {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-top: 0.4rem;
    position: absolute;
    right: 1.2rem;
    top: 1rem;
}

/* Responsive adjustments for publications */
@media (max-width: 768px) {
    .pub-venue-label {
        width: 90px;
        padding: 0.6rem 0.3rem;
    }

    .pub-number {
        font-size: 0.95rem;
        margin-bottom: 0.2rem;
    }

    .venue-text {
        font-size: 0.7rem;
    }

    .pub-content {
        padding: 0.8rem 1rem;
    }

    .publications-list {
        gap: 0.6rem;
    }
}

@media (max-width: 576px) {
    .publication {
        flex-direction: column;
    }

    .pub-venue-label {
        width: 100%;
        flex-direction: row;
        padding: 0.4rem;
        justify-content: space-between;
    }

    .pub-number {
        margin-bottom: 0;
        margin-right: 0.5rem;
    }

    .venue-text {
        text-align: right;
    }

    .pub-content {
        padding: 0.7rem 0.9rem;
        padding-right: 0.9rem;
    }

    .pub-content h3 {
        font-size: 0.95rem;
    }

    .authors,
    .venue {
        font-size: 0.8rem;
    }

    .pub-tags {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: flex-end;
        margin-top: 0.8rem;
    }

    .tag {
        width: auto;
        min-width: 60px;
    }
}

.tag {
    display: inline-block;
    padding: 0.15rem 0.6rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 500;
    font-style: normal;
    width: 80px;
    text-align: center;
}

/* Gray color for preprint tags */
.preprint-tag {
    background-color: #f0f0f0;
    color: #666;
}

/* Light blue color for venue tags (accepted papers) */
.venue-tag {
    background-color: var(--background-color);
    color: var(--primary-color);
}

/* Light purple color for highlight tags, rating tags, and code/blog tags */
.highlight-tag,
.code-tag,
.blog-tag {
    background-color: var(--background-color);
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.code-tag:hover,
.blog-tag:hover {
    background-color: var(--primary-color);
    color: white;
}

.highlight {
    color: var(--primary-color);
    font-weight: 600;
    font-style: normal;
}

.status {
    background-color: var(--background-color);
    color: var(--primary-color);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-style: normal;
}

.code-link,
.blog-link {
    display: inline-block;
    margin-left: 0.5rem;
    padding: 0.2rem 0.5rem;
    background-color: #e6f0ff;
    color: var(--primary-color);
    border-radius: 4px;
    font-style: normal;
    text-decoration: none;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.code-link:hover,
.blog-link:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Footer */
footer {
    padding: 2rem 0;
    text-align: center;
    color: var(--light-text);
    font-size: 0.9rem;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #E74C3C 100%);
    color: white;
    border: none;
    border-radius: 50px;
    padding: 15px 40px;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(189, 56, 75, 0.2);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #E74C3C 0%, var(--primary-color) 100%);
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(189, 56, 75, 0.3);
    color: white;
}

.btn-soft {
    background: rgba(189, 56, 75, 0.12);
    color: var(--primary-color);
    border: 1px solid rgba(189, 56, 75, 0.18);
    border-radius: 50px;
    padding: 15px 40px;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(189, 56, 75, 0.12);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-soft:hover {
    background: rgba(189, 56, 75, 0.18);
    color: var(--primary-color);
    border-color: rgba(189, 56, 75, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(189, 56, 75, 0.14);
}

.btn i {
    margin-right: 0.5rem;
}

.download-cv {
    margin-bottom: 2rem;
    text-align: center;
}

/* Contact Section */
.contact-container {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
}

.contact-info-card {
    background-color: var(--secondary-color);
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 600px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.contact-method {
    text-align: center;
}

.contact-method i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: block;
}

.contact-method h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.contact-method p {
    color: var(--light-text);
}

.contact-social {
    grid-column: span 2;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 25px;
    background-color: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 992px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 2rem;
    }

    .profile-image {
        align-self: center;
    }

    /* research-areas responsive handled in inline style */
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    .nav-links {
        justify-content: center;
    }

    .nav-links li {
        margin: 0 1rem;
    }

    .section {
        padding: 3rem 0;
    }

    #profile-img {
        width: 150px;
        height: 150px;
    }

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

    .gallery-container {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }

    /* Hide timeline elements on mobile */
    .timeline {
        padding-left: 0;
    }

    .timeline::before {
        display: none;
    }

    .timeline-marker {
        display: none;
    }

    .edu-content-wrapper {
        flex-direction: column;
        align-items: flex-start;
    }

    .edu-text {
        padding-right: 0;
        margin-bottom: 1rem;
    }

    .school-logo {
        align-self: center;
    }

    .edu-logo {
        width: 80px;
    }

    .honor-item {
        flex-direction: column;
    }

    .honor-year {
        margin-bottom: 0.75rem;
        margin-right: 0;
    }
}

@media (max-width: 576px) {
    .contact-info {
        flex-direction: row;
        gap: 0.5rem;
        justify-content: flex-start;
        margin-bottom: 1rem;
    }

    .contact-info a {
        width: 38px;
        height: 38px;
        padding: 6px;
    }

    .contact-info i {
        font-size: 1.5rem;
    }

    .icon-svg {
        width: 1.5rem;
        height: 1.5rem;
    }

    nav {
        padding: 0.3rem 0;
    }

    .nav-logo {
        height: 30px;
        /* 更小的屏幕上进一步减小logo大小 */
    }

    .nav-links {
        height: auto;
        padding: 5px 0;
    }

    .nav-links li {
        margin: 0 10px;
    }

    .nav-links a {
        font-size: 0.9rem;
        padding: 8px 0;
    }

    .container nav::before,
    .container nav::after {
        width: 20px;
    }

    .skill-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .skill-name {
        margin-bottom: 0.5rem;
    }

    .gallery-container {
        grid-template-columns: 1fr;
    }

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

    .contact-social {
        grid-column: span 1;
    }
}

/* Ensure date-highlight and year-highlight have the same styling */
.date-highlight,
.year-highlight {
    display: inline-block;
    background-color: var(--background-color);
    padding: 5px 18px;
    border-radius: 25px;
    font-size: 0.9rem;
    width: 140px;
    text-align: center;
    box-sizing: border-box;
}

/* Services Section */
.services-content {
    margin-top: 2rem;
}

.service-category {
    margin-bottom: 2.5rem;
}

.service-category h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.service-category h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
}

.service-list {
    list-style-type: none;
    padding-left: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.service-list li {
    padding: 0.5rem 0.9rem;
    background-color: var(--secondary-color);
    border-radius: 4px;
    font-size: 0.95rem;
    color: var(--text-color);
    transition: all 0.2s ease;
    display: inline-block;
    margin-bottom: 0.2rem;
    border: 1px solid rgba(0, 0, 0, 0.03);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.service-list li:hover {
    transform: translateX(5px);
    background-color: rgba(189, 56, 75, 0.05);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border-color: rgba(0, 102, 204, 0.1);
}

@media (max-width: 768px) {
    .service-list {
        gap: 0.5rem;
    }

    .service-list li {
        font-size: 0.85rem;
        padding: 0.4rem 0.8rem;
    }
}

/* Location Section */
.location-content {
    margin-top: 2rem;
}

.address-container {
    margin-bottom: 2rem;
    background-color: var(--secondary-color);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.address-info h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.address-info p {
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.address-info i {
    color: var(--primary-color);
}

.address-description {
    color: var(--light-text);
    font-size: 0.95rem !important;
    margin-left: 1.5rem;
}

.map-container {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.map-container iframe {
    display: block;
}

@media (max-width: 768px) {
    .address-info p {
        font-size: 1rem;
    }

    .address-description {
        font-size: 0.9rem !important;
    }
}

/* Visitors Section */
.visitors-section {
    padding: 3rem 0;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.visitors-section .section-title {
    margin: 0 auto 2rem;
}

/* Team Section */
.team-container {
    margin-top: 2rem;
}

.team-category {
    margin-bottom: 3rem;
}

.team-category h3 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #f0f0f0;
}

.team-members {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
}

.team-member {
    flex: 1;
    min-width: 250px;
    max-width: 300px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.team-member img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.team-member h4 {
    padding: 1rem 1rem 0.5rem;
    font-size: 1.2rem;
    color: #333;
}

.team-member p {
    padding: 0 1rem;
    font-size: 0.9rem;
    color: #666;
    margin: 0.25rem 0;
}

.member-links {
    display: flex;
    padding: 1rem;
    gap: 1rem;
}

.member-links a {
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.member-links a:hover {
    color: var(--secondary-color);
}

.view-all-members {
    text-align: center;
    margin-top: 2rem;
}

/* Seminars Section */
.seminars-list {
    margin-top: 2rem;
}

.seminar-item {
    display: flex;
    align-items: flex-start;
    padding: 0.5rem;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
    border-radius: 4px;
    background-color: transparent;
}

.seminar-item:last-child {
    border-bottom: none;
}

.seminar-item:hover {
    transform: translateX(5px);
    background-color: rgba(189, 56, 75, 0.05);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* Date column — same style as news */
.seminars-list .seminar-date {
    min-width: 160px;
    width: 160px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-right: 15px;
    flex-shrink: 0;
    display: flex;
    align-items: flex-start;
    padding-top: 2px;
}

/* Content column */
.seminars-list .seminar-content {
    flex: 1;
    min-width: 0;
}

.seminars-list .seminar-content h3 {
    font-size: 1rem;
    color: var(--text-color);
    margin-bottom: 0.35rem;
    line-height: 1.45;
    font-weight: 700;
    transition: color 0.2s ease;
}

.seminar-item:hover .seminar-content h3 {
    color: var(--primary-color);
}

.seminars-list .speaker-name {
    font-size: 0.9rem;
    color: #555;
    font-weight: 500;
    margin-bottom: 0.4rem;
    display: block;
}

.seminars-list .speaker-name i {
    color: var(--primary-color);
    margin-right: 4px;
    font-size: 13px;
}

.seminars-list .seminar-description {
    font-size: 0.9rem;
    color: var(--light-text);
    line-height: 1.55;
    margin-bottom: 0;
}

/* Photo column */
.seminar-photo {
    flex-shrink: 0;
    width: 160px;
    margin-left: 20px;
    border-radius: 6px;
    overflow: hidden;
}

.seminar-photo img {
    width: 100%;
    height: 105px;
    object-fit: cover;
    display: block;
    border-radius: 6px;
}

.view-all-seminars {
    text-align: center;
    margin-top: 2rem;
}

/* Legacy selectors kept for seminar-detail pages */
.seminar-speaker,
.seminar-location {
    font-size: 0.9rem;
    color: #7f8c8d;
    margin-bottom: 0.4rem;
    display: flex;
    align-items: center;
    gap: 0.2rem;
}

.seminar-speaker i {
    color: var(--primary-color);
    margin-right: 2px;
    font-size: 14px;
}

.seminar-thumbnail {
    margin-top: 15px;
    overflow: hidden;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    margin-left: 0;
    margin-right: 0;
    padding: 0 0 1rem;
}

.seminar-thumbnail img {
    width: 100%;
    height: auto;
    max-height: 180px;
    object-fit: cover;
    display: block;
    border-radius: 12px;
    border: 3px solid rgba(255, 255, 255, 0.9);
    box-shadow:
        0 8px 24px rgba(0, 0, 0, 0.12),
        0 4px 12px rgba(0, 0, 0, 0.08);
}

.seminar-content h3 a {
    color: inherit;
    text-decoration: none;
}

.seminar-content h3 a:hover {
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .seminar-item {
        flex-direction: column;
    }

    .seminars-list .seminar-date {
        width: auto;
        min-width: unset;
        margin-right: 0;
        margin-bottom: 0.4rem;
        font-size: 0.9rem;
    }

    .seminar-photo {
        display: none;
    }

    .seminars-list .seminar-content h3 {
        font-size: 0.95rem;
    }

    .seminars-list .seminar-description {
        font-size: 0.85rem;
    }
}

@media (max-width: 576px) {
    .seminars-list .seminar-content h3 {
        font-size: 0.88rem;
        line-height: 1.35;
    }

    .seminars-list .speaker-name {
        font-size: 0.82rem;
    }

    .seminars-list .seminar-description {
        font-size: 0.82rem;
        line-height: 1.45;
    }
}

/* Contact Section */
.contact-details {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-item h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 0.75rem;
}

.contact-item p {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.contact-item p a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item p a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.map-container {
    grid-column: span 3;
    height: 400px;
}

@media (max-width: 992px) {
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .map-container {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .map-container {
        grid-column: span 1;
        height: 350px;
    }

    .contact-card {
        padding: 1.25rem;
    }
}

.contact-icon-circle {
    background-color: rgba(189, 56, 75, 0.1);
    width: 50px;
    height: 50px;
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.5rem;
}

.contact-icon-circle i {
    color: var(--primary-color);
    font-size: 1.8rem;
}

.year-divider {
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: 700;
    color: var(--primary-color);
    border-bottom: 2px solid #eee;
    padding-bottom: 8px;
    font-size: 1.4rem;
}

.publications-list {
    margin-bottom: 20px;
}

/* News Gallery Container */
.news-gallery {
    display: flex;
    justify-content: center;
    flex-wrap: nowrap;
    overflow: visible;
    margin: 20px 0;
    position: relative;
    gap: 0;
}

.news-gallery.single {
    display: block;
    margin: 20px 0;
}

/* 单张图片卡片 */
.news-gallery-item {
    display: block;
    text-decoration: none;
    flex: 0 0 auto;
    position: relative;
    /* margin-left will be set dynamically via inline style in JavaScript */
    /* Default fallback for browsers that don't support calc */
    margin-left: -60px;
}

.news-gallery.single .news-gallery-item {
    margin-left: 0 !important;
}

.news-gallery.single .news-gallery-img {
    width: min(100%, 720px);
    height: auto;
    display: block;
    margin: 0 auto;
    object-fit: contain;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.news-gallery.single .news-gallery-item:nth-child(1) .news-gallery-img {
    transform: none;
    filter: none;
}

.news-gallery.single .news-gallery-item:hover .news-gallery-img {
    transform: translateY(-8px) scale(1.06) rotate(0deg) !important;
}

/* 第一张不需要左边距 */
.news-gallery-item:first-child {
    margin-left: 0 !important;
}

/* 图片通用样式 */
.news-gallery-img {
    width: 280px;
    height: 210px;
    object-fit: cover;
    border-radius: 12px;
    border: 5px solid white;
    box-shadow:
        0 8px 20px rgba(0, 0, 0, 0.15),
        0 2px 6px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    background: white;
    position: relative;
}

/* 添加照片的"纸张"效果 */
.news-gallery-img::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0.4) 100%);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.news-gallery-item:hover .news-gallery-img::before {
    opacity: 1;
}

/* --- 自动旋转和层级 --- */

/* 第1张 */
.news-gallery-item:nth-child(1) {
    z-index: 4;
}

.news-gallery-item:nth-child(1) .news-gallery-img {
    transform: rotate(-2.5deg);
    filter: brightness(1.02);
}

/* 第2张 */
.news-gallery-item:nth-child(2) {
    z-index: 3;
}

.news-gallery-item:nth-child(2) .news-gallery-img {
    transform: rotate(1.8deg);
    filter: brightness(0.98);
}

/* 第3张 */
.news-gallery-item:nth-child(3) {
    z-index: 2;
}

.news-gallery-item:nth-child(3) .news-gallery-img {
    transform: rotate(-1.5deg);
    filter: brightness(0.96);
}

/* 第4张 */
.news-gallery-item:nth-child(4) {
    z-index: 1;
}

.news-gallery-item:nth-child(4) .news-gallery-img {
    transform: rotate(2.2deg);
    filter: brightness(0.94);
}

/* 第5张及以后 */
.news-gallery-item:nth-child(n+5) {
    z-index: 0;
}

.news-gallery-item:nth-child(n+5) .news-gallery-img {
    transform: rotate(-1deg);
    filter: brightness(0.92);
}

/* --- 鼠标悬停效果 --- */
.news-gallery-item {
    transition: z-index 0.3s ease;
}

.news-gallery-item:hover {
    z-index: 10 !important;
}

.news-gallery-item:hover .news-gallery-img {
    transform: translateY(-18px) scale(1.25) rotate(0deg) !important;
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.25),
        0 8px 16px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(255, 255, 255, 0.5);
    filter: brightness(1.05);
    border-color: rgba(255, 255, 255, 0.95);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .news-gallery {
        /* 移除 overflow-x: auto，因为动态 overlap 已经能防止溢出 */
        justify-content: center;
        padding-bottom: 20px;
    }

    /* 移除固定 margin-left，因为 JavaScript 已经动态计算了 */
}

/* Slideshow Styles */
/* Hero Section Styles */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    background: #000;
}

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

.hero-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    z-index: 1;
}

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

.hero-bg,
.hero-bg-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* For video tags */
    background-size: cover;
    /* For div background images */
    background-position: center center;
    background-repeat: no-repeat;
    z-index: -1;
    transform: scale(1.05);
    transition: transform 6s ease;
}

.hero-item.active .hero-bg {
    transform: scale(1);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.7));
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 3;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: white;
    padding-left: 2rem;
    padding-right: 2rem;
    padding-top: 60px;
    /* Offset for nav */
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease 0.3s;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    line-height: 1.1;
}

.hero-content p {
    font-size: 1.25rem;
    max-width: 700px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease 0.5s;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    font-weight: 300;
}

.hero-content small {
    display: inline-block;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease 0.7s;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-item.active .hero-content h1,
.hero-item.active .hero-content p,
.hero-item.active .hero-content small {
    opacity: 1;
    transform: translateY(0);
}

/* Controls */
.hero-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.hero-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.hero-btn.prev {
    left: 2rem;
}

.hero-btn.next {
    right: 2rem;
}

.hero-dots {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.8rem;
    z-index: 10;
}

.hero-dots .dot {
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.hero-dots .dot.active {
    background: white;
    transform: scale(1.3);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .hero-btn {
        width: 40px;
        height: 40px;
    }

    .hero-btn.prev {
        left: 1rem;
    }

    .hero-btn.next {
        right: 1rem;
    }
}



/* Seminar Detail Page Styles */
.seminar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
    background-color: #fff;
    border-radius: 20px;
    margin-top: 20px;
    margin-bottom: 60px;
}

.seminar-header {
    margin-bottom: 40px;
    text-align: center;
}

.seminar-header h1 {
    margin-bottom: 25px;
    font-size: 2.5rem;
    color: #2c3e50;
    font-weight: 700;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--primary-color) 0%, #E74C3C 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.seminar-speaker-info {
    padding: 20px 0;
    margin-bottom: 30px;
    text-align: center;
    background: none;
    box-shadow: none;
    border: none;
    transition: none;
}

.seminar-speaker-info:hover {
    transform: none;
    box-shadow: none;
}

.seminar-speaker-title {
    font-weight: bold;
    font-size: 16px;
    color: #555;
    margin-bottom: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.seminar-speaker-title i {
    color: var(--primary-color);
    margin-right: 8px;
    font-size: 16px;
}

.seminar-speaker-name {
    font-weight: bold;
    font-size: 20px;
    color: #333;
    margin-bottom: 10px;
    text-align: center;
}

.seminar-speaker-affiliation {
    font-size: 15px;
    color: #666;
    text-align: center;
    line-height: 1.5;
}

.seminar-section {
    margin-bottom: 50px;
    padding: 0;
    background: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    transition: none;
}

.seminar-section:hover {
    box-shadow: none;
    transform: none;
}

.seminar-section h2 {
    color: var(--primary-color);
    border-bottom: 3px solid #eee;
    padding-bottom: 15px;
    margin-bottom: 25px;
    font-size: 1.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.seminar-section h2::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 30px;
    background-color: var(--primary-color);
    margin-right: 15px;
    border-radius: 4px;
}

.seminar-section p {
    font-size: 17px;
    line-height: 1.8;
    color: #444;
    text-align: justify;
    margin-bottom: 20px;
}

.seminar-section p:last-child {
    margin-bottom: 0;
}

/* Seminar Gallery with overlapping photos */
.seminar-gallery {
    display: flex;
    justify-content: center;
    flex-wrap: nowrap;
    overflow: visible;
    margin: 20px 0;
    position: relative;
    gap: 0;
    padding: 20px 0;
}

/* 单张图片卡片 */
.seminar-gallery img {
    width: 280px;
    height: 210px;
    object-fit: cover;
    border-radius: 12px;
    border: 5px solid white;
    box-shadow:
        0 8px 20px rgba(0, 0, 0, 0.15),
        0 2px 6px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    background: white;
    position: relative;
    flex-shrink: 0;
}

/* 添加照片的"纸张"效果 */
.seminar-gallery img::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0.4) 100%);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.seminar-gallery img:hover::before {
    opacity: 1;
}

/* 第一张不需要左边距 */
.seminar-gallery img:first-child {
    margin-left: 0 !important;
}

/* --- 自动旋转和层级 --- */

/* 第1张 */
.seminar-gallery img:nth-child(1) {
    z-index: 6;
}

.seminar-gallery img:nth-child(1) {
    transform: rotate(-2.5deg);
    filter: brightness(1.02);
}

/* 第2张 */
.seminar-gallery img:nth-child(2) {
    z-index: 5;
}

.seminar-gallery img:nth-child(2) {
    transform: rotate(1.8deg);
    filter: brightness(0.98);
}

/* 第3张 */
.seminar-gallery img:nth-child(3) {
    z-index: 4;
}

.seminar-gallery img:nth-child(3) {
    transform: rotate(-1.5deg);
    filter: brightness(0.96);
}

/* 第4张 */
.seminar-gallery img:nth-child(4) {
    z-index: 3;
}

.seminar-gallery img:nth-child(4) {
    transform: rotate(2.2deg);
    filter: brightness(0.94);
}

/* 第5张 */
.seminar-gallery img:nth-child(5) {
    z-index: 2;
}

.seminar-gallery img:nth-child(5) {
    transform: rotate(-1deg);
    filter: brightness(0.92);
}

/* 第6张及以后 */
.seminar-gallery img:nth-child(n+6) {
    z-index: 1;
}

.seminar-gallery img:nth-child(n+6) {
    transform: rotate(-1deg);
    filter: brightness(0.92);
}

/* --- 鼠标悬停效果 --- */

.seminar-gallery img:hover {
    transform: translateY(-18px) scale(1.12) rotate(0deg) !important;
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.25),
        0 8px 16px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(255, 255, 255, 0.5);
    filter: brightness(1.05);
    border-color: rgba(255, 255, 255, 0.95);
    z-index: 10 !important;
}

/* Responsive adjustments for gallery */
@media (max-width: 992px) {
    .seminar-gallery img {
        width: 250px;
        height: 180px;
    }
}

@media (max-width: 768px) {
    .seminar-gallery img {
        width: 220px;
        height: 160px;
    }
}

@media (max-width: 576px) {
    .seminar-gallery {
        justify-content: flex-start;
        overflow-x: auto;
        padding: 10px 0;
    }

    .seminar-gallery img {
        width: 200px;
        height: 150px;
    }
}

.back-to-home {
    text-align: center;
    margin-top: 50px;
}

.back-to-home .btn-primary {
    padding: 15px 40px;
    font-size: 18px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary-color) 0%, #E74C3C 100%);
    color: white;
    border: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(189, 56, 75, 0.2);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.back-to-home .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(189, 56, 75, 0.3);
    background: linear-gradient(135deg, #E74C3C 0%, var(--primary-color) 100%);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .seminar-container {
        margin: 10px;
        padding: 40px 20px;
    }

    .seminar-header h1 {
        font-size: 2.2rem;
    }
}

@media (max-width: 992px) {
    .seminar-container {
        padding: 40px 20px;
    }

    .seminar-header h1 {
        font-size: 2rem;
    }

    .seminar-section {
        padding: 30px;
    }

    .seminar-gallery {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 20px;
    }

    .seminar-gallery img {
        height: 200px;
    }
}

@media (max-width: 768px) {
    .seminar-container {
        padding: 30px 15px;
        margin-top: 10px;
        margin-bottom: 30px;
    }

    .seminar-header h1 {
        font-size: 1.8rem;
    }

    .seminar-speaker-info {
        padding: 25px;
    }

    .seminar-section {
        padding: 25px;
        margin-bottom: 30px;
    }

    .seminar-section h2 {
        font-size: 1.5rem;
    }

    .seminar-gallery {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 15px;
    }

    .seminar-gallery img {
        height: 180px;
    }
}

@media (max-width: 480px) {
    .seminar-container {
        padding: 20px 10px;
        border-radius: 15px;
    }

    .seminar-header {
        margin-bottom: 30px;
    }

    .seminar-header h1 {
        font-size: 1.5rem;
    }

    .seminar-speaker-info {
        padding: 20px 15px;
        margin-bottom: 30px;
    }

    .seminar-speaker-name {
        font-size: 20px;
    }

    .seminar-section {
        padding: 20px 15px;
        margin-bottom: 25px;
    }

    .seminar-section h2 {
        font-size: 1.3rem;
    }

    .seminar-section p {
        font-size: 16px;
        line-height: 1.7;
    }

    .seminar-gallery {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .seminar-gallery img {
        height: 200px;
    }

    .back-to-home .btn-primary {
        padding: 12px 30px;
        font-size: 16px;
    }
}

/* Animation for elements */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

.seminar-header {
    animation: fadeInUp 0.6s ease-out;
}

.seminar-speaker-info {
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.seminar-section {
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.seminar-section:nth-child(3) {
    animation-delay: 0.3s;
}

.seminar-section:nth-child(4) {
    animation-delay: 0.4s;
}

.seminar-section:nth-child(5) {
    animation-delay: 0.5s;
}

.back-to-home {
    animation: fadeInUp 0.6s ease-out 0.6s both;
}

/* ============================================
   统一子页面导航栏样式规则
   Subpage Navigation Styles - Unified Rules
   ============================================ */

/* 子页面导航栏统一样式 - 适用于所有 /pages/ 目录下的页面 */
/* 通过路径检测：如果页面在子目录中，应用这些样式 */
html[data-subpage="true"] nav,
body[data-subpage="true"] nav {
    padding: 0.4rem 0 !important;
    background: rgba(255, 255, 255, 0.85) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

html[data-subpage="true"] .logo-text,
body[data-subpage="true"] .logo-text {
    font-size: 1.2rem !important;
    font-weight: 700 !important;
    color: var(--primary-color) !important;
    text-shadow: none !important;
}

html[data-subpage="true"] .nav-links a,
body[data-subpage="true"] .nav-links a {
    height: 50px !important;
    line-height: 50px !important;
    font-weight: 500 !important;
    color: var(--text-color) !important;
    text-shadow: none !important;
}

html[data-subpage="true"] .nav-links a.active,
html[data-subpage="true"] .nav-links a:hover,
body[data-subpage="true"] .nav-links a.active,
body[data-subpage="true"] .nav-links a:hover {
    color: var(--primary-color) !important;
}

/* 隐藏子页面的标准 header（保留 research-header） */
html[data-subpage="true"] header:not(.research-header),
body[data-subpage="true"] header:not(.research-header) {
    display: none !important;
}

html[data-subpage="true"] .header-content,
body[data-subpage="true"] .header-content {
    display: none !important;
}

html[data-subpage="true"] .profile-image,
html[data-subpage="true"] #profile-img,
body[data-subpage="true"] .profile-image,
body[data-subpage="true"] #profile-img {
    display: none !important;
}

/* 子页面 main 顶部间距 */
html[data-subpage="true"] main,
body[data-subpage="true"] main {
    padding-top: 80px !important;
}

/* 通用辅助类 */
.text-center { text-align: center !important; }
.mt-5 { margin-top: 3rem !important; }

/* 子页面第一个 section 的间距优化 */
html[data-subpage="true"] main section:first-of-type,
body[data-subpage="true"] main section:first-of-type {
    padding-top: 2rem !important;
}