/* 基础样式重置和变量定义 */
:root {
    /* 科技蓝色主色调 */
    --primary-color: #115399;
    --primary-dark: #005BB5;
    --primary-light: #4DA3FF;
    --secondary-color: #1D1D1F;
    --accent-color: #30D158;
    
    /* 灰度色阶 */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* 背景色 */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-dark: #1A1A1C;
    
    /* 文字颜色 */
    --text-primary: #1D1D1F;
    --text-secondary: #6B7280;
    --text-light: #FFFFFF;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* 边框圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* 字体 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    
    /* 动画 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 断点 */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-top: 72px; /* 为固定导航栏留出空间 */
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
    body {
        padding-top: 64px; /* 移动端导航栏高度调整 */
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    height: 72px;
}

.nav-brand h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: -0.02em;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background-color: rgba(0, 122, 255, 0.08);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background-color: var(--primary-color);
    border-radius: 1px;
}

/* 移动端导航 */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.bar {
    width: 24px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 2px 0;
    border-radius: 1px;
    transition: all var(--transition-fast);
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 var(--spacing-md);
        height: 64px; /* 减少移动端导航栏高度 */
    }
    
    .nav-brand h2 {
        font-size: 1.2rem; /* 减小移动端标题字体 */
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .nav-menu {
        position: fixed;
        top: 64px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 64px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        transition: left var(--transition-normal);
        z-index: 1000;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
        margin: 0;
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        font-size: 1rem;
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
        border-bottom: 1px solid var(--gray-200);
        display: block;
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
}

/* 英雄区域 */
.hero {
    position: relative;
    height: 60vh;
    min-height: 300px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.3) 0%, rgba(0, 91, 181, 0.4) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 var(--spacing-lg);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    line-height: 1.5;
    margin-bottom: var(--spacing-2xl);
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    min-width: 140px;
    height: 48px;
    letter-spacing: -0.01em;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

/* 区块样式 */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
}

/* 研究特色网格 */
.features {
    background-color: var(--bg-secondary);
    padding: var(--spacing-3xl) 0;
    min-height: auto;
}
/* 最新动态网格 */
.news {
    padding: var(--spacing-3xl) 0;
    min-height: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-100);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 新闻动态 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.news-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-100);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.news-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    min-height: 1.5rem;
    align-items: center;
}

.news-date {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.news-category {
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.news-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
    height: 4.8rem;
    display: flex;
    align-items: flex-start;
    overflow: hidden;
}

.news-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

.news-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    transition: color var(--transition-fast);
    margin-top: auto;
}

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

.news-link::after {
    content: '→';
    margin-left: var(--spacing-xs);
    transition: transform var(--transition-fast);
}

.news-link:hover::after {
    transform: translateX(4px);
}

/* 页脚 */
.footer {
    background-color: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h3 {
    color: white;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: white;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.social-link {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.social-link:hover {
    color: var(--primary-color);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.contact-info p {
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.institute-link {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.institute-link:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--gray-500);
}

/* 备案号链接样式 - 与页脚文字保持一致 */
.footer-bottom a {
    color: inherit;
    text-decoration: none;
}

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

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* 滚动动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.25s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 文字渐变出现动画 - 用于所有页面的主要文字元素 */
.fade-in-text {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in-text.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 标题动画 - 更明显的效果 */
.fade-in-title {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in-title.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 段落文字动画 - 较轻微的效果 */
.fade-in-paragraph {
    opacity: 0;
    transform: translateY(15px);
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in-paragraph.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 容器动画 - 用于卡片、区块等容器元素 */
.fade-in-container {
    opacity: 0;
    transform: translateY(25px);
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in-container.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 团队页面样式 */
.team-overview {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--gray-100) 100%);
}

.team-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

/* 核心团队 */
.core-team {
    padding: var(--spacing-3xl) 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
    align-items: stretch;
}

.member-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl) var(--spacing-2xl) var(--spacing-xl) var(--spacing-2xl); /* 减少底部padding */
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* 学位标识 */
.degree-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
}

.degree-badge.phd {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.degree-badge.master {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(240, 147, 251, 0.3);
}

.degree-badge.student {
    background: linear-gradient(135deg, #93fbdd 0%, #15998a 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(240, 147, 251, 0.3);
}

.degree-badge.worker {
    background: linear-gradient(135deg, hwb(41 8% 10% / 0.89) 0%, #ffe056 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(240, 147, 251, 0.3); 
}
.member-card.leader {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.02), white);
}

.member-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.member-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto var(--spacing-lg);
    border: 4px solid var(--gray-100);
    transition: border-color var(--transition-normal);
}

.member-card:hover .member-photo {
    border-color: var(--primary-color);
}

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

.member-info {
    text-align: center;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    min-height: 250px; /* 增加最小高度 */
    justify-content: flex-start;
}

/* 兴趣爱好段落 - 推到底部对齐 */
.member-hobby {
    margin-top: auto !important;
    margin-bottom: var(--spacing-xs) !important;
}

.member-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.member-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.member-education {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.member-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.member-description:last-of-type {
    margin-bottom: var(--spacing-lg);
}

.member-expertise {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: 0;
    margin-top: var(--spacing-sm);
    min-height: 5rem; /* 增加最小高度以容纳两行标签 */
    align-items: flex-start;
    align-content: flex-start;
    padding-bottom: var(--spacing-md); /* 添加底部padding保持一致 */
}

/* 当成员信息中没有兴趣爱好描述时，让专业技能部分对齐到底部 */
.member-info-no-hobby .member-expertise {
    margin-top: auto;
}

.member-contact {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gray-100);
    border-radius: 50%;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all var(--transition-normal);
}

.contact-link:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

/* 博士后团队 */
.postdoc-team {
    background-color: var(--bg-secondary);
    padding: var(--spacing-3xl) 0;
}

.postdoc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.postdoc-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-normal);
    text-align: center;
}

.postdoc-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.postdoc-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.postdoc-research {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.postdoc-duration {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 研究生团队 */
.graduate-team {
    padding: var(--spacing-3xl) 0;
}

.graduate-categories {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.category-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    position: relative;
}

.category-section h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

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

.graduate-item {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: var(--spacing-md);
    align-items: center;
    transition: all var(--transition-normal);
}

.graduate-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.graduate-name {
    font-weight: 600;
    color: var(--text-primary);
}

.graduate-year {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.graduate-research {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 团队文化 */
.team-culture {
    background-color: var(--bg-secondary);
    padding: var(--spacing-3xl) 0;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.culture-item {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    text-align: center;
    transition: all var(--transition-normal);
}

.culture-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.culture-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.culture-item h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.culture-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .team-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .postdoc-grid {
        grid-template-columns: 1fr;
    }
    
    .graduate-categories {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .graduate-item {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .culture-grid {
        grid-template-columns: 1fr;
    }
    
    /* 学位标识在移动端的调整 */
    .degree-badge {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        font-size: 0.7rem;
        padding: 4px 8px;
    }
}

/* 研究方向页面样式 */
.research-overview {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--gray-100) 100%);
}

.overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.research-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.stat-box {
    text-align: center;
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
}

.stat-box .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.stat-box .stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.overview-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.research-visualization {
    width: 300px;
    height: 300px;
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
}

.dna-helix {
    position: relative;
    width: 200px;
    height: 200px;
}

.helix-strand {
    position: absolute;
    width: 100%;
    height: 4px;
    background: white;
    border-radius: 2px;
    opacity: 0.8;
    animation: rotate 4s linear infinite;
}

.helix-strand:nth-child(2) {
    animation-delay: 2s;
}

@keyframes rotate {
    0% { transform: rotateY(0deg) translateZ(50px); }
    100% { transform: rotateY(360deg) translateZ(50px); }
}

/* 研究方向卡片 */
.research-directions {
    padding: var(--spacing-3xl) 0;
}

.directions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
}

.direction-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 500px;
}

.direction-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.direction-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.direction-card:hover::before {
    transform: scaleX(1);
}

.direction-icon {
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.direction-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.direction-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

.direction-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    margin-top: auto;
}

.direction-progress {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.progress-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 技术平台 */
.technology-platforms {
    background-color: var(--bg-secondary);
    padding: var(--spacing-3xl) 0;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.platform-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-normal);
}

.platform-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.platform-header {
    padding: var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(135deg, var(--gray-50), white);
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.platform-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.platform-status {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.platform-status.active {
    background-color: var(--accent-color);
    color: white;
}

.platform-status.planning {
    background-color: var(--gray-400);
    color: white;
}

.platform-content {
    padding: var(--spacing-xl);
}

.platform-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.platform-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background-color: var(--gray-50);
    border-radius: var(--radius-sm);
}

.spec-label {
    font-weight: 500;
    color: var(--text-secondary);
}

.spec-value {
    font-weight: 600;
    color: var(--primary-color);
}

/* 研究成果时间线 */
.research-highlights {
    padding: var(--spacing-3xl) 0;
}

.highlights-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.highlights-timeline::before {
    content: '';
    position: absolute;
    left: 60px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
}

.highlight-item {
    position: relative;
    margin-bottom: var(--spacing-2xl);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xl);
}

.highlight-year {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    min-width: 80px;
    text-align: center;
    position: relative;
    z-index: 2;
}

.highlight-content {
    flex: 1;
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
}

.highlight-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.highlight-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.highlight-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .overview-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .research-stats {
        grid-template-columns: 1fr;
    }
    
    .research-visualization {
        width: 200px;
        height: 200px;
    }
    
    .dna-helix {
        width: 120px;
        height: 120px;
    }
    
    .directions-grid {
        grid-template-columns: 1fr;
    }
    
    .platforms-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-specs {
        grid-template-columns: 1fr;
    }
    
    .highlights-timeline::before {
        left: 20px;
    }
    
    .highlight-item {
        flex-direction: column;
        align-items: flex-start;
        margin-left: 40px;
    }
    
    .highlight-year {
        position: absolute;
        left: -40px;
        top: 0;
        min-width: 60px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* 页面特定样式 */
.page-header {
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    background: linear-gradient(135deg, rgba(245, 248, 250, 0.99) 0%, rgba(100, 100, 100, 0.2) 100%), url('../images/星空图.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
}

/* About页面样式 */
.about-overview {
    padding: var(--spacing-3xl) 0;
}

.overview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.overview-text .section-title {
    text-align: left;
    margin-bottom: var(--spacing-lg);
}

.lead-text {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
}

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

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.overview-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.overview-image img {
    display: block;
    width: 130%;
    height: 100%;
    object-fit: cover;
}


/* 使命愿景 */
.mission-vision {
    background-color: var(--bg-secondary);
    padding: var(--spacing-3xl) 0;
}

.mission-vision-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.mission-card,
.vision-card {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.mission-card h3,
.vision-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.mission-card p,
.vision-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 核心价值观 */
.values {
    padding: var(--spacing-3xl) 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.value-item {
    text-align: center;
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-normal);
}

.value-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.value-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.value-item h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.value-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 时间线 */
.timeline {
    background-color: var(--bg-secondary);
    padding: var(--spacing-3xl) 0;
}

.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-2xl);
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-item:nth-child(odd) .timeline-content {
    text-align: right;
    margin-right: var(--spacing-2xl);
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: var(--spacing-2xl);
}

.timeline-date {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    position: relative;
    z-index: 2;
}

.timeline-content {
    flex: 1;
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
}

.timeline-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 合作伙伴 */
.partners {
    padding: var(--spacing-3xl) 0;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.partner-item {
    text-align: center;
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-normal);
}

.partner-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.partner-logo {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.partner-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.partner-item p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }
    
    .overview-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .highlight-stats {
        grid-template-columns: 1fr;
    }
    
    .mission-vision-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline-container::before {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        align-items: flex-start;
    }
    
    .timeline-item .timeline-content {
        margin-left: 60px !important;
        margin-right: 0 !important;
        text-align: left !important;
    }
    
    .timeline-date {
        position: absolute;
        left: 0;
        margin-top: var(--spacing-sm);
    }
}

/* 工具类 */
.text-center {
    text-align: center;
}

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

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

.hidden {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==================== 研究成果页面样式 ==================== */

/* 成果统计 */
.achievements-stats {
    padding: var(--spacing-xl) 0;
    background: white;
}
/* 成果统计中的数字设为黑色 */
.achievements-stats .stat-number {
    color: #000;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    transition: all 0.3s ease;
}

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

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* 论文列表 */
.publications {
    padding: var(--spacing-xl) 0;
    background: var(--color-background);
}

.publications-list {
    margin-top: var(--spacing-lg);
}

.publication-item {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
}

.publication-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.publication-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
}
/* todo 添加徽章样式，如果需要修改请修改这里 */
.publication-badge.nature {
    background: linear-gradient(135deg, #ff4757, #ff3742);
    color: white;
}

.publication-badge.science {
    background: linear-gradient(135deg, #3742fa, #2f3542);
    color: white;
}

.publication-badge.nature-genetics {
    background: linear-gradient(135deg, #7bed9f, #5f27cd);
    color: white;
}

.publication-badge.science-advances {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
}

.publication-badge.mol-biol-evol {
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
    color: white;
}

.publication-badge.genomics-proteomics {
    background: linear-gradient(135deg, #00b894, #00cec9);
    color: white;
}

.publication-title {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.publication-authors {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.publication-journal {
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.publication-abstract {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.publication-metrics {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.metric {
    background: var(--color-background);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* 查看更多按钮样式 */
.publications-actions {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
}

.btn-view-more {
    display: inline-block;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    box-shadow: var(--shadow-md);
}

.btn-view-more:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.btn-view-more:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

/* 获奖成果 */
.awards {
    padding: var(--spacing-xl) 0;
    background: white;
}

.awards-timeline {
    position: relative;
    margin-top: var(--spacing-lg);
}

.awards-timeline::before {
    content: '';
    position: absolute;
    left: 60px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-secondary));
}

.award-item {
    display: flex;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.award-year {
    flex: 0 0 120px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    text-align: center;
    position: relative;
}

.award-year::after {
    content: '';
    position: absolute;
    right: -32px;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: var(--color-primary);
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 0 3px var(--color-primary);
}

.award-content {
    flex: 1;
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    margin-left: var(--spacing-lg);
    transition: all 0.3s ease;
}

.award-content:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.award-content h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.award-project {
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.award-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 专利技术 */
.patents {
    padding: var(--spacing-xl) 0;
    background: var(--color-background);
}

.patents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.patent-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.patent-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.patent-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.patent-header h4 {
    color: var(--text-primary);
    font-weight: 600;
    flex: 1;
    margin-right: var(--spacing-sm);
}

.patent-status {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.patent-status.granted {
    background: linear-gradient(135deg, #2ed573, #1e90ff);
    color: white;
}

.patent-status.pending {
    background: linear-gradient(135deg, #ffa726, #ff7043);
    color: white;
}

.patent-number {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.patent-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.patent-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag {
    background: var(--color-background);
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
}

/* 产业化应用 */
.applications {
    padding: var(--spacing-xl) 0;
    background: white;
}

.applications-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.application-card {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05), rgba(88, 86, 214, 0.05));
    border: 1px solid rgba(0, 122, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
}

.application-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.08), rgba(88, 86, 214, 0.08));
}

.application-image {
    flex-shrink: 0;
    width: 200px;
}

.product-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.product-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.application-content {
    flex: 1;
    padding-left: var(--spacing-md);
}

.application-content h4 {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.application-content h5 {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.application-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* 应用场景双列布局 */
.application-scenarios {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.application-scenario {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(0, 122, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.application-scenario h5 {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--primary-light);
}

.application-scenario p {
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-xs);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .application-card {
        flex-direction: column;
        text-align: center;
    }
    
    .application-image {
        width: 100%;
        max-width: 250px;
        margin: 0 auto;
    }
    
    .application-content {
        padding-left: 0;
        padding-top: var(--spacing-md);
    }
    
    .application-scenarios {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

/* ==================== 教学页面样式 ==================== */

/* 教学理念 */
.teaching-philosophy {
    padding: var(--spacing-xl) 0;
    background: white;
}

.philosophy-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-xl);
    align-items: center;
}

.philosophy-text h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.philosophy-text > p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

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

.point {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.point-icon {
    font-size: 1.5rem;
    margin-top: var(--spacing-xs);
}

.point h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.point p {
    color: var(--text-secondary);
    line-height: 1.5;
}

.philosophy-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, var(--color-background), rgba(0, 122, 255, 0.1));
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 2px dashed rgba(0, 122, 255, 0.3);
}

.placeholder-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.image-placeholder p {
    color: var(--text-secondary);
    font-weight: 500;
}

/* 课程体系 */
.course-system {
    padding: var(--spacing-xl) 0;
    background: var(--color-background);
}

.course-levels {
    margin-top: var(--spacing-lg);
}

.course-level {
    margin-bottom: var(--spacing-xl);
}

.level-title {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.course-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border-left: 4px solid var(--color-primary);
}

.course-card.advanced {
    border-left-color: var(--color-secondary);
}

.course-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.course-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.course-header h4 {
    color: var(--text-primary);
    font-weight: 600;
    flex: 1;
}

.course-credits {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    margin-left: var(--spacing-sm);
}

.course-card.advanced .course-credits {
    background: var(--color-secondary);
}

.course-description {
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.course-details {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.detail {
    background: var(--color-background);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* 实践教学 */
.practical-teaching {
    padding: var(--spacing-xl) 0;
    background: white;
}

.practical-programs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.program-card {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05), rgba(88, 86, 214, 0.05));
    border: 1px solid rgba(0, 122, 255, 0.1);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
}

.program-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.08), rgba(88, 86, 214, 0.08));
}

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

.program-card h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.program-card > p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.program-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.program-features li {
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-md);
}

.program-features li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* 学生成果 */
.student-achievements {
    padding: var(--spacing-xl) 0;
    background: var(--color-background);
}

.achievements-showcase {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.achievement-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

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

.stat-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.student-highlights {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.highlight-card h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

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

.student-item {
    padding: var(--spacing-md);
    background: var(--color-background);
    border-radius: var(--border-radius-md);
    transition: all 0.3s ease;
}

.student-item:hover {
    background: rgba(0, 122, 255, 0.05);
    transform: translateX(5px);
}

.student-info h5 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.student-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 教学资源 */
.teaching-resources {
    padding: var(--spacing-xl) 0;
    background: white;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.resource-card {
    background: white;
    border: 1px solid rgba(0, 122, 255, 0.1);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
}

.resource-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

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

.resource-card h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.resource-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.resource-card li {
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
    font-size: 0.9rem;
}

/* ==================== 招聘页面样式 ==================== */

/* 招聘简介 */
.recruitment-intro {
    padding: var(--spacing-xl) 0;
    background: white;
}

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

.intro-text h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    text-align: center;
}

.intro-text > p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    text-align: center;
    font-size: 1.1rem;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
}

.benefit-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05), rgba(88, 86, 214, 0.05));
    border-radius: var(--border-radius-lg);
    transition: all 0.3s ease;
}

.benefit-item:hover {
    transform: translateY(-5px);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.1), rgba(88, 86, 214, 0.1));
}

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

.benefit-item h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.benefit-item p {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* 开放职位 */
.open-positions {
    padding: var(--spacing-xl) 0;
    background: var(--color-background);
}

.positions-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-primary);
    background: white;
    color: var(--color-primary);
    border-radius: var(--border-radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.positions-list {
    display: grid;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.position-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.position-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.position-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-background);
}

.position-title h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.position-type {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    color: white;
}

.position-type.faculty {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.position-type.postdoc {
    background: linear-gradient(135deg, #f093fb, #f5576c);
}

.position-type.student {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
}

.position-type.staff {
    background: linear-gradient(135deg, #43e97b, #38f9d7);
}

.position-salary {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 1.1rem;
}

.position-info {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.info-item {
    background: var(--color-background);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.position-description h4 {
    color: var(--text-primary);
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
    font-weight: 600;
}

.position-description ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
}

.position-description li {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-xs);
}

.position-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-background);
}

.btn-primary,
.btn-secondary {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

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

/* 申请流程 */
.application-process {
    padding: var(--spacing-xl) 0;
    background: white;
}

.process-steps {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.step-item {
    text-align: center;
    max-width: 200px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-md) auto;
}

.step-content h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.5;
    font-size: 0.9rem;
}

.step-arrow {
    color: var(--color-primary);
    font-size: 1.5rem;
    font-weight: bold;
}

/* 联系我们 */
.contact-recruitment {
    padding: var(--spacing-xl) 0;
    background: var(--color-background);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0 var(--spacing-xl) 0;
}

.contact-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

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

.contact-card h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.contact-card p {
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-xs);
}

/* 申请表单 */
.application-form {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    margin-top: var(--spacing-xl);
}

.application-form h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    font-weight: 600;
}

.quick-apply-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid #ddd;
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.btn-large {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.1rem;
}

/* ==================== 响应式设计优化 ==================== */

/* 平板设备 */
@media (max-width: 1024px) {
    .philosophy-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .philosophy-image {
        order: -1;
    }
    
    .achievements-showcase {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
        align-items: center;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .awards-timeline::before {
        left: 30px;
    }
    
    .award-year {
        flex: 0 0 80px;
    }
    
    .award-year::after {
        right: -22px;
    }
}

/* 手机设备 */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .positions-filter {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: var(--spacing-sm);
    }
    
    .filter-btn {
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .position-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .position-actions {
        flex-direction: column;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        gap: var(--spacing-lg);
    }
    
    .step-item {
        max-width: 100%;
    }
    
    .member-card {
        text-align: center;
    }
    
    .member-info {
        text-align: center;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    body {
        padding-top: 56px; /* 小屏手机导航栏高度调整 */
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav-container {
        height: 56px; /* 进一步减小小屏手机的导航栏高度 */
        padding: 0 var(--spacing-sm);
    }
    
    .nav-brand h2 {
        font-size: 1rem; /* 小屏手机进一步减小标题字体 */
    }
    
    .nav-menu {
        top: 56px;
        height: calc(100vh - 56px);
    }
    
    .nav-list {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .nav-link {
        font-size: 0.9rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .resources-grid {
        grid-template-columns: 1fr;
    }
    
    .practical-programs {
        grid-template-columns: 1fr;
    }
    
    .patents-grid {
        grid-template-columns: 1fr;
    }
    
    .page-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.25rem;
    }
    
    /* 优化英雄区域在小屏幕上的显示 */
    .hero-title {
        font-size: 1.5rem !important;
    }
    
    .hero-subtitle {
        font-size: 0.9rem !important;
    }
    
    /* 优化按钮在小屏幕上的显示 */
    .btn {
        font-size: 0.875rem;
        padding: 0.625rem 1.25rem;
    }
    
    /* 优化特色卡片字体 */
    .feature-title {
        font-size: 1.1rem;
    }
    
    .feature-description {
        font-size: 0.875rem;
    }
    
    /* 优化新闻卡片字体 */
    .news-title {
        font-size: 1rem;
    }
    
    .news-excerpt {
        font-size: 0.875rem;
        line-height: 1.5;
    }
    
    .hero-content h1 {
        font-size: 1.75rem;
    }
}

/* ==================== 教学页面样式 ==================== */

/* 教学理念 */
.teaching-philosophy {
    padding: var(--spacing-xl) 0;
    background: white;
}

.philosophy-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.philosophy-text h2 {
    color: var(--text-primary);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.philosophy-text > p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    font-size: 1.1rem;
}

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

.point {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

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

.point h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.point p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.philosophy-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    background: linear-gradient(135deg, var(--color-background), rgba(0, 122, 255, 0.1));
    border: 2px dashed var(--color-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    width: 100%;
    max-width: 400px;
    aspect-ratio: 4/3;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.placeholder-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.image-placeholder p {
    color: var(--text-secondary);
    font-weight: 500;
}

/* 课程体系 */
.course-system {
    padding: var(--spacing-xl) 0;
    background: var(--color-background);
}

.course-levels {
    margin-top: var(--spacing-lg);
}

.course-level {
    margin-bottom: var(--spacing-xl);
}

.level-title {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.course-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border-left: 4px solid var(--color-primary);
}

.course-card.advanced {
    border-left-color: var(--color-secondary);
}

.course-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.course-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.course-header h4 {
    color: var(--text-primary);
    font-weight: 600;
    flex: 1;
    margin-right: var(--spacing-sm);
}

.course-credits {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
}

.course-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.course-details {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.detail {
    background: var(--color-background);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
}

/* 实践教学 */
.practical-teaching {
    padding: var(--spacing-xl) 0;
    background: white;
}

.practical-programs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.program-card {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05), rgba(88, 86, 214, 0.05));
    border: 1px solid rgba(0, 122, 255, 0.1);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
}

.program-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.08), rgba(88, 86, 214, 0.08));
}

.program-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.program-card h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.program-card > p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.program-features {
    list-style: none;
    padding: 0;
    text-align: left;
}

.program-features li {
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-lg);
}

.program-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* 学生成果 */
.student-achievements {
    padding: var(--spacing-xl) 0;
    background: var(--color-background);
}

.achievements-showcase {
    margin-top: var(--spacing-lg);
}

.achievement-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

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

.stat-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.student-highlights {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.student-highlights h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

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

.student-item {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    background: var(--color-background);
    transition: all 0.3s ease;
}

.student-item:hover {
    background: rgba(0, 122, 255, 0.05);
}

.student-info h5 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.student-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 教学资源 */
.teaching-resources {
    padding: var(--spacing-xl) 0;
    background: white;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

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

.resource-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

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

.resource-card h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.resource-card ul {
    list-style: none;
    padding: 0;
    text-align: left;
}

.resource-card li {
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-lg);
}

.resource-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* 研究动态轮播样式 */
.research-updates {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.research-carousel {
    margin-top: var(--spacing-xl);
    overflow: hidden;
    position: relative;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.carousel-track {
    display: flex;
    animation: scroll-horizontal 20s linear infinite;
    will-change: transform;
}

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

.carousel-item {
    flex: 10 0 300px;
    margin-right: 20px;
    position: relative;
    cursor: pointer;
    transition: transform var(--transition-normal);
}

.carousel-item:hover {
    transform: scale(1.05);
}

.carousel-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--transition-normal);
}

.carousel-item:hover img {
    box-shadow: var(--shadow-xl);
}

@keyframes scroll-horizontal {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-100%);
    }
}