/* 基础变量定义 */
:root {
    /* 颜色方案 */
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --background-color: #f8f9fa;
    --text-color: #333;
    --text-light: #666;
    --border-color: #ddd;
    --card-background: #fff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.15);
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* 字体 */
    --font-primary: 'Roboto', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;
}

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

/* 导航栏 */
.navbar {
    background-color: var(--card-background);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.nav-link:hover {
    color: var(--secondary-color);
    background-color: rgba(52, 152, 223, 0.1);
}

/* 导航下拉菜单 */
.nav-dropdown {
    position: relative;
    display: inline-block;
}

.nav-dropdown > .nav-link {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
}

.nav-dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 10px;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    background-color: white;
    min-width: 140px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    z-index: 1001;
    padding: 0.5rem 0;
}

.dropdown-content::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 6px solid white;
}

.dropdown-content a {
    display: block;
    padding: 0.6rem 1rem;
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.dropdown-content a:hover {
    background-color: rgba(52, 152, 223, 0.1);
    color: var(--secondary-color);
}

.nav-dropdown:hover .dropdown-content {
    display: block;
}

/* Hero区域 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-xl) var(--spacing-md);
    min-height: 80vh;
    display: flex;
    align-items: center;
    text-align: center;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 1s ease;
}

.title-icon {
    margin-right: var(--spacing-xs);
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 300;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.conference-badge {
    font-size: 1.4rem;
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease 0.3s both;
}

/* 作者信息 */
.authors {
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease 0.4s both;
}

.author-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.author {
    font-size: 1.1rem;
    font-weight: 500;
}

.author a {
    color: white;
    text-decoration: none;
}

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

.affiliations {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 按钮样式 */
.hero-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease 0.6s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.btn-tertiary {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
}

.btn-tertiary:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

.btn-copy {
    background-color: var(--secondary-color);
    color: white;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-copy:hover {
    background-color: #2980b9;
}

/* 摘要 */
.abstract {
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    text-align: left;
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    animation: fadeInUp 1s ease 0.8s both;
}

.abstract h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}

.abstract p {
    line-height: 1.8;
    font-size: 1rem;
}

/* 图片样式 */
.teaser-image {
    margin-top: var(--spacing-lg);
    animation: fadeInUp 1s ease 1s both;
}

.teaser-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: transform 0.3s ease;
}

.teaser-image img:hover {
    transform: scale(1.02);
}

.annotation-diagram {
    margin-top: var(--spacing-lg);
    text-align: center;
}

.annotation-diagram img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform 0.3s ease;
}

.annotation-diagram img:hover {
    transform: scale(1.02);
}

/* 评估结果部分 */
.evaluation-content {
    margin-top: var(--spacing-lg);
}

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

.evaluation-diagram img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform 0.3s ease;
}

.evaluation-diagram img:hover {
    transform: scale(1.02);
}

/* 实验分析部分 */
.experiments-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.experiments-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

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

.experiment-figure img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform 0.3s ease;
}

.experiment-figure img:hover {
    transform: scale(1.02);
}

/* 案例展示轮播 */
.cases-container {
    margin-top: var(--spacing-lg);
}

.carousel {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

.carousel-track-container {
    overflow: hidden;
    border-radius: 10px;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.carousel-slide {
    min-width: 100%;
    text-align: center;
}

.carousel-slide img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.carousel-slide .figure-caption {
    padding: var(--spacing-sm);
    text-align: center;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.9);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--primary-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    z-index: 10;
}

.carousel-btn:hover {
    background-color: white;
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev {
    left: -25px;
}

.carousel-next {
    right: -25px;
}

.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background-color: var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator:hover {
    background-color: var(--secondary-color);
    opacity: 0.7;
}

.indicator.active {
    background-color: var(--secondary-color);
    transform: scale(1.2);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .experiments-row {
        grid-template-columns: 1fr;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .carousel-prev {
        left: 5px;
    }

    .carousel-next {
        right: 5px;
    }

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

/* 更多信息部分 */
.more-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.more-links h3 {
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.resources-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.resource-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--background-color);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
}

.resource-link:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateX(5px);
}

.resource-link i {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.more-details h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.more-details h3:not(:first-child) {
    margin-top: var(--spacing-md);
}

.more-details p {
    line-height: 1.8;
    color: var(--text-light);
}

.more-details a {
    color: var(--secondary-color);
    text-decoration: none;
}

.more-details a:hover {
    text-decoration: underline;
}

.figure-caption {
    text-align: center;
    margin-top: var(--spacing-sm);
    font-style: italic;
    opacity: 0.8;
}

/* 主要内容区 */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.section {
    margin-bottom: var(--spacing-xl);
    background-color: var(--card-background);
    padding: var(--spacing-lg);
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.section-divider {
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--secondary-color), var(--accent-color));
    margin: 0 auto;
}

/* 概述部分 */
.overview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.overview-text h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.features-list {
    list-style: none;
    margin-top: var(--spacing-md);
}

.features-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.features-list li:last-child {
    border-bottom: none;
}

.overview-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.stat-card {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    padding: var(--spacing-md);
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.stat-label {
    font-size: 1rem;
    color: var(--text-light);
}

/* 任务部分 */
.tasks-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.task-category-title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.task-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.task-card {
    background-color: var(--background-color);
    padding: var(--spacing-md);
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.task-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--secondary-color);
}

.task-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.task-card h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
}

.task-examples {
    margin-top: var(--spacing-sm);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.tag {
    background-color: rgba(52, 152, 223, 0.1);
    color: var(--secondary-color);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.8rem;
}

.task-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.task-detail-item {
    background-color: var(--background-color);
    padding: var(--spacing-md);
    border-radius: 10px;
    border-left: 4px solid var(--secondary-color);
}

.task-detail-item h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--secondary-color);
}

/* 数据部分 */
.data-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.data-table-container {
    overflow-x: auto;
}

.data-table, .comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-md);
}

.data-table th, .data-table td,
.comparison-table th, .comparison-table td {
    padding: 0.75rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.data-table th, .comparison-table th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 500;
}

.data-table tbody tr:hover, 
.comparison-table tbody tr:hover {
    background-color: rgba(52, 152, 223, 0.05);
}

.total-row {
    background-color: rgba(52, 152, 223, 0.1);
}

/* 图表容器 */
.data-visualizations {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.chart-container {
    background-color: var(--background-color);
    padding: var(--spacing-md);
    border-radius: 10px;
}

.chart-container h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.chart {
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed var(--border-color);
    border-radius: 5px;
}

/* 结果部分 */
.results-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.findings-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.finding-card {
    background-color: var(--background-color);
    padding: var(--spacing-md);
    border-radius: 10px;
    text-align: center;
}

.finding-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.finding-card h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
}

.chart-full-width {
    background-color: var(--background-color);
    padding: var(--spacing-md);
    border-radius: 10px;
}

.chart-full-width .chart {
    height: 400px;
}

/* 排行榜部分 */
.leaderboard-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.leaderboard-intro {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.legend {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.color-box {
    width: 15px;
    height: 15px;
    border-radius: 3px;
}

.color-box.proprietary {
    background-color: #3498db;
}

.color-box.object-level {
    background-color: #9b59b6;
}

.color-box.open-source {
    background-color: #95a5a6;
}

.leaderboard-table-container {
    overflow-x: auto;
    max-height: 600px;
    overflow-y: auto;
}

.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.leaderboard-table th {
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 10;
}

.leaderboard-table td {
    padding: 0.5rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.leaderboard-table tbody tr:hover {
    background-color: rgba(52, 152, 223, 0.05);
}

.leaderboard-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* 对比部分 */
.comparison-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.comparison-highlight {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.highlight-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-lg);
    border-radius: 10px;
}

.highlight-card h4 {
    margin-bottom: var(--spacing-sm);
}

.highlight-card ul {
    list-style: none;
}

.highlight-card li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.highlight-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #2ecc71;
}

/* 引用部分 */
.citation-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
}

.citation-centered {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.citation-centered .citation-box {
    max-width: 800px;
    width: 100%;
}

.citation-box {
    background-color: var(--background-color);
    padding: var(--spacing-lg);
    border-radius: 10px;
}

.citation-box pre {
    background-color: var(--primary-color);
    color: #ecf0f1;
    padding: var(--spacing-md);
    border-radius: 5px;
    overflow-x: auto;
    margin: var(--spacing-md) 0;
}

.contact-info {
    background-color: var(--background-color);
    padding: var(--spacing-lg);
    border-radius: 10px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.contact-item a {
    color: var(--secondary-color);
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

/* 页脚 */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    margin-bottom: var(--spacing-sm);
    color: white;
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

.footer-bottom a {
    color: white;
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    overflow: auto;
    padding-top: 60px;
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90%;
    animation: fadeIn 0.5s ease;
}

.modal-caption {
    margin: auto;
    display: block;
    width: 80%;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
}

.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: #f1f1f1;
    text-decoration: none;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .overview-content,
    .data-container,
    .comparison-container,
    .citation-container {
        grid-template-columns: 1fr;
    }
    
    .task-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .task-details {
        grid-template-columns: 1fr;
    }
    
    .findings-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.4rem;
    }

    .nav-menu {
        display: none;
    }

    .hero-links {
        flex-direction: column;
        align-items: center;
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .dropdown-content {
        position: fixed;
        top: auto;
        left: 50%;
        transform: translateX(-50%);
        width: 90%;
        max-width: 280px;
    }

    .dropdown-content::before {
        display: none;
    }
}

/* 打印样式 */
@media print {
    .navbar, .hero-links, .btn, .modal {
        display: none;
    }
    
    .hero {
        background: none;
        color: black;
        min-height: auto;
        padding: 1rem;
    }
    
    .section {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}