:root {
    --space-blue: #1a237e;
    --quantum-orange: #ff6f00;
    --silver-gray: #e0e0e0;
    --dark-gray: #333333;
    --light-gray: #f5f5f5;
    --section-padding: 6rem 0;
    --container-padding: 2rem;
    --card-padding: 2.5rem;
    --border-radius: 12px;
    --box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.8;
    color: var(--dark-gray);
    margin: 0;
    padding: 0;
    background-color: #fafafa;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Orbitron', sans-serif;
    color: var(--space-blue);
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.8rem;
}

p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.container {
    padding: var(--container-padding);
    max-width: 1200px;
}

/* Header Styles */
.header {
    background-color: #fff;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar {
    padding: 0.5rem 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 0.8rem;
    padding: 0.5rem 0;
}

.logo {
    height: 38px;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.site-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--space-blue);
    margin: 0;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.navbar-nav {
    gap: 0.2rem;
}

.nav-link {
    color: var(--dark-gray) !important;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    padding: 0.5rem 1rem !important;
    border-radius: 6px;
    position: relative;
    display: flex;
    align-items: center;
    letter-spacing: 0.2px;
}

.nav-link:hover {
    color: var(--quantum-orange) !important;
}

.nav-link.active {
    color: var(--quantum-orange) !important;
    font-weight: 600;
    position: relative;
    background-color: rgba(255, 111, 0, 0.05);
}

.nav-link.active:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background-color: var(--quantum-orange);
    border-radius: 1px;
    animation: slideIn 0.3s ease-out;
}

/* 滚动后的导航样式 */
.header.scrolled .nav-link {
    color: var(--dark-gray) !important;
    opacity: 0.8;
}

.header.scrolled .nav-link:hover {
    color: var(--quantum-orange) !important;
    opacity: 1;
}

.header.scrolled .nav-link.active {
    color: var(--quantum-orange) !important;
    font-weight: 600;
    opacity: 1;
    background-color: rgba(255, 111, 0, 0.1);
    box-shadow: 0 2px 8px rgba(255, 111, 0, 0.1);
}

.header.scrolled .nav-link.active:after {
    height: 3px;
    width: 25px;
    background-color: var(--quantum-orange);
}

@keyframes slideIn {
    from {
        width: 0;
        opacity: 0;
    }
    to {
        width: 20px;
        opacity: 1;
    }
}

/* Placeholder Image Styles */
.placeholder-image {
    background: linear-gradient(135deg, var(--light-gray), var(--silver-gray));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-gray);
    font-size: 1.2rem;
    font-weight: 500;
    text-align: center;
    padding: 2rem;
    min-height: 200px;
    position: relative;
    overflow: hidden;
}

.placeholder-image:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 25%, rgba(255,255,255,0.1) 50%, transparent 75%);
    background-size: 400% 400%;
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.placeholder-image i {
    font-size: 3rem;
    color: var(--quantum-orange);
    margin-bottom: 1rem;
}

/* Team Placeholder */
.team-placeholder {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--light-gray), var(--silver-gray));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    position: relative;
    overflow: hidden;
}

.team-placeholder:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 25%, rgba(255,255,255,0.1) 50%, transparent 75%);
    background-size: 400% 400%;
    animation: shimmer 2s infinite;
}

.team-placeholder i {
    font-size: 4rem;
    color: var(--quantum-orange);
}

/* Product Placeholder */
.product-placeholder {
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, var(--light-gray), var(--silver-gray));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-placeholder:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 25%, rgba(255,255,255,0.1) 50%, transparent 75%);
    background-size: 400% 400%;
    animation: shimmer 2s infinite;
}

.product-placeholder i {
    font-size: 4rem;
    color: var(--quantum-orange);
}

/* News Placeholder */
.news-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--light-gray), var(--silver-gray));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.news-placeholder:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 25%, rgba(255,255,255,0.1) 50%, transparent 75%);
    background-size: 400% 400%;
    animation: shimmer 2s infinite;
}

.news-placeholder i {
    font-size: 3rem;
    color: var(--quantum-orange);
}

/* Responsive Design for Navigation */
@media (max-width: 992px) {
    .navbar-nav {
        gap: 0.1rem;
    }
    
    .nav-link {
        padding: 0.4rem 0.8rem !important;
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .navbar-brand {
        gap: 0.5rem;
    }
    
    .logo {
        height: 32px;
    }
    
    .site-title {
        font-size: 1.3rem;
    }
    
    .nav-link {
        padding: 0.5rem 0.8rem !important;
    }
    
    .nav-link.active:after {
        display: none;
    }
    
    .nav-link.active {
        background-color: rgba(255, 111, 0, 0.1);
    }
    
    .header.scrolled .nav-link.active {
        background-color: rgba(255, 111, 0, 0.15);
    }
    
    .placeholder-image,
    .team-placeholder,
    .product-placeholder,
    .news-placeholder {
        min-height: 150px;
    }
    
    .team-placeholder {
        width: 150px;
        height: 150px;
    }
}

@media (max-width: 576px) {
    .placeholder-image,
    .team-placeholder,
    .product-placeholder,
    .news-placeholder {
        min-height: 120px;
    }
    
    .team-placeholder {
        width: 120px;
        height: 120px;
    }
}

/* Hero Sections */
.hero, .research-hero, .products-hero, .news-hero, .education-hero, .about-hero {
    background: linear-gradient(135deg, var(--space-blue), #000033);
    color: white;
    padding: 10rem 0 6rem;
    text-align: center;
    margin-top: 76px;
    position: relative;
    overflow: hidden;
}

.hero h1, .research-hero h1, .products-hero h1, .news-hero h1, .education-hero h1, .about-hero h1 {
    color: white;
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.hero p, .research-hero p, .products-hero p, .news-hero p, .education-hero p, .about-hero p {
    font-size: 1.4rem;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto 2rem;
}

/* Section Styles */
section {
    padding: var(--section-padding);
}

section:nth-child(even) {
    background-color: var(--light-gray);
}

/* Card Styles */
.card {
    background: white;
    padding: var(--card-padding);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
    transition: var(--transition);
    height: 100%;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

/* Button Styles */
.btn {
    padding: 0.8rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--quantum-orange);
    border-color: var(--quantum-orange);
}

.btn-primary:hover {
    background-color: #e65100;
    border-color: #e65100;
    transform: translateY(-2px);
}

.btn-outline-primary {
    color: var(--quantum-orange);
    border-color: var(--quantum-orange);
}

.btn-outline-primary:hover {
    background-color: var(--quantum-orange);
    border-color: var(--quantum-orange);
    transform: translateY(-2px);
}

/* Image Styles */
.img-fluid {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

/* Timeline Styles */
.timeline {
    position: relative;
    padding: var(--section-padding);
}

.timeline:before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: var(--quantum-orange);
}

.timeline-item {
    display: flex;
    margin-bottom: 4rem;
    position: relative;
}

.year {
    background: var(--quantum-orange);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: var(--border-radius);
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    font-weight: bold;
    font-size: 1.2rem;
    box-shadow: var(--box-shadow);
}

.content {
    background: white;
    padding: var(--card-padding);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    width: 100%;
}

/* Team Styles */
.team-card {
    text-align: center;
    padding: var(--card-padding);
}

.team-image {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    margin-bottom: 1.5rem;
    object-fit: cover;
    border: 4px solid var(--quantum-orange);
    box-shadow: var(--box-shadow);
}

.position {
    color: var(--quantum-orange);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

/* Footer Styles */
.footer {
    background-color: var(--space-blue);
    color: white;
    padding: 4rem 0 2rem;
}

.footer h4 {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.footer a {
    color: var(--silver-gray);
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
    margin-bottom: 0.8rem;
}

.footer a:hover {
    color: var(--quantum-orange);
    transform: translateX(5px);
}

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

.social-link {
    background-color: rgba(255,255,255,0.1);
    padding: 0.8rem 1.2rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--quantum-orange);
    transform: translateY(-3px);
}

.copyright {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

/* Responsive Design */
@media (max-width: 992px) {
    :root {
        --section-padding: 5rem 0;
        --container-padding: 1.5rem;
        --card-padding: 2rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero, .research-hero, .products-hero, .news-hero, .education-hero, .about-hero {
        padding: 8rem 0 4rem;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 4rem 0;
        --container-padding: 1rem;
    }

    .navbar-brand {
        gap: 0.5rem;
    }

    .logo {
        height: 35px;
    }

    .site-title {
        font-size: 1.5rem;
    }

    .nav-link {
        margin: 0.5rem 0;
        padding: 0.8rem 1rem;
    }

    .timeline:before {
        left: 2rem;
    }

    .timeline-item {
        flex-direction: row !important;
    }

    .year {
        left: 2rem;
    }

    .content {
        width: calc(100% - 6rem);
        margin-left: 4rem !important;
        margin-right: 0 !important;
    }

    .team-image {
        width: 150px;
        height: 150px;
    }
}

@media (max-width: 576px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .hero, .research-hero, .products-hero, .news-hero, .education-hero, .about-hero {
        padding: 6rem 0 3rem;
    }

    .team-image {
        width: 120px;
        height: 120px;
    }
}

/* Hero Section with Animation */
.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    overflow: hidden;
}

#quantumCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease-out;
}

.hero .lead {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

.hero-buttons {
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

/* Features Section */
.features {
    padding: var(--section-padding);
    background-color: var(--light-gray);
}

.feature-card {
    background: white;
    padding: var(--card-padding);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.feature-card i {
    font-size: 3rem;
    color: var(--quantum-orange);
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    color: var(--space-blue);
    margin-bottom: 1rem;
}

/* Applications Section */
.applications {
    padding: var(--section-padding);
}

.application-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
}

.application-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.application-card h3 {
    padding: 1.5rem;
    color: var(--space-blue);
    margin-bottom: 0.5rem;
}

.application-card p {
    padding: 0 1.5rem 1.5rem;
    color: var(--dark-gray);
}

/* Latest News Section */
.latest-news {
    padding: var(--section-padding);
    background-color: var(--light-gray);
}

.news-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.news-content {
    padding: 1.5rem;
}

.news-date {
    color: var(--quantum-orange);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    display: block;
}

.news-content h3 {
    color: var(--space-blue);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.read-more {
    color: var(--quantum-orange);
    text-decoration: none;
    font-weight: 500;
    display: inline-block;
    margin-top: 1rem;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--space-blue);
    transform: translateX(5px);
}

/* Partners Section */
.partners {
    padding: var(--section-padding);
}

.partner-logo {
    text-align: center;
    transition: var(--transition);
}

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

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

/* Responsive Design */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero .lead {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero .lead {
        font-size: 1.3rem;
    }
    
    .feature-card i {
        font-size: 2.5rem;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero .lead {
        font-size: 1.1rem;
    }
    
    .hero-buttons .btn {
        display: block;
        width: 100%;
        margin-bottom: 1rem;
    }
}

/* Research Overview Section */
.research-overview {
    padding: var(--section-padding);
    background-color: var(--light-gray);
}

.research-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--quantum-orange);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--dark-gray);
    font-size: 1.1rem;
}

/* Research Areas Section */
.research-areas {
    padding: 6rem 0;
    background-color: var(--light-gray);
}

.section-header {
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--space-blue);
    margin-bottom: 1rem;
}

.section-header .lead {
    font-size: 1.2rem;
    color: var(--dark-gray);
    max-width: 600px;
    margin: 0 auto;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.research-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

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

.research-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--space-blue), #000033);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.research-icon i {
    font-size: 2.5rem;
    color: white;
}

.research-content h3 {
    font-size: 1.5rem;
    color: var(--space-blue);
    margin-bottom: 1rem;
}

.research-content p {
    color: var(--dark-gray);
    margin-bottom: 1.5rem;
}

.research-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem;
    background: var(--light-gray);
    border-radius: var(--border-radius);
    transition: background-color 0.3s ease;
}

.feature:hover {
    background: rgba(26, 35, 126, 0.05);
}

.feature i {
    color: var(--quantum-orange);
    font-size: 1.2rem;
}

.feature span {
    color: var(--dark-gray);
    font-size: 1rem;
}

/* Research Team Section */
.research-team {
    padding: 6rem 0;
    background-color: white;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.team-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
}

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

.team-image {
    position: relative;
    overflow: hidden;
}

.team-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.team-card:hover .team-image img {
    transform: scale(1.05);
}

.team-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.team-card:hover .team-overlay {
    opacity: 1;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--space-blue);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--quantum-orange);
    color: white;
    transform: translateY(-3px);
}

.team-content {
    padding: 2rem;
    text-align: center;
}

.team-content h3 {
    font-size: 1.5rem;
    color: var(--space-blue);
    margin-bottom: 0.5rem;
}

.position {
    color: var(--quantum-orange);
    font-weight: 500;
    margin-bottom: 1rem;
}

.expertise {
    color: var(--dark-gray);
    margin-bottom: 1.5rem;
}

.team-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--light-gray);
}

.stat {
    text-align: center;
}

.number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--quantum-orange);
    margin-bottom: 0.3rem;
}

.label {
    font-size: 0.9rem;
    color: var(--dark-gray);
}

/* Responsive Design */
@media (max-width: 768px) {
    .research-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .team-image img {
        height: 250px;
    }
}

/* News Hero Section */
.news-hero {
    background: linear-gradient(135deg, var(--space-blue), #000033);
    color: white;
    padding: 10rem 0 6rem;
    text-align: center;
    margin-top: 76px;
    position: relative;
    overflow: hidden;
}

.news-hero h1 {
    color: white;
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.news-hero .lead {
    font-size: 1.4rem;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto 2rem;
}

/* Featured News Section */
.featured-news {
    padding: var(--section-padding);
    background-color: var(--light-gray);
}

.featured-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.featured-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.featured-content {
    padding: 2rem;
}

.featured-content h2 {
    color: var(--space-blue);
    margin: 1rem 0;
    font-size: 2rem;
}

.news-sidebar {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.news-sidebar h3 {
    color: var(--space-blue);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--quantum-orange);
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.news-item {
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--silver-gray);
}

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

.news-item h4 {
    color: var(--dark-gray);
    margin: 0.5rem 0;
    font-size: 1.1rem;
}

/* News Categories */
.news-categories {
    padding: 2rem 0;
    background-color: white;
}

.category-tabs {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.category-tab {
    padding: 0.8rem 1.5rem;
    border: 2px solid var(--quantum-orange);
    border-radius: var(--border-radius);
    background: transparent;
    color: var(--quantum-orange);
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
}

.category-tab:hover,
.category-tab.active {
    background: var(--quantum-orange);
    color: white;
}

/* News Grid */
.news-grid {
    padding: var(--section-padding);
}

.news-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.news-content {
    padding: 1.5rem;
}

.news-date {
    color: var(--quantum-orange);
    font-size: 0.9rem;
    display: block;
    margin-bottom: 0.5rem;
}

.news-content h3 {
    color: var(--space-blue);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.read-more {
    color: var(--quantum-orange);
    text-decoration: none;
    font-weight: 500;
    display: inline-block;
    margin-top: 1rem;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--space-blue);
    transform: translateX(5px);
}

/* Newsletter Section */
.newsletter {
    padding: var(--section-padding);
    background: linear-gradient(135deg, var(--space-blue), #000033);
    color: white;
}

.newsletter h2 {
    color: white;
    margin-bottom: 1.5rem;
}

.newsletter .lead {
    color: rgba(255,255,255,0.9);
    margin-bottom: 2rem;
}

.newsletter-form {
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form .form-control {
    padding: 1rem;
    border: none;
    border-radius: var(--border-radius);
}

.newsletter-form .btn {
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
}

/* Responsive Design */
@media (max-width: 992px) {
    .featured-card {
        margin-bottom: 2rem;
    }
    
    .news-sidebar {
        margin-top: 2rem;
    }
    
    .category-tabs {
        gap: 0.5rem;
    }
    
    .category-tab {
        padding: 0.6rem 1.2rem;
    }
}

@media (max-width: 768px) {
    .news-hero h1 {
        font-size: 2.5rem;
    }
    
    .news-hero .lead {
        font-size: 1.2rem;
    }
    
    .featured-content h2 {
        font-size: 1.8rem;
    }
    
    .news-content h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .news-hero h1 {
        font-size: 2rem;
    }
    
    .news-hero .lead {
        font-size: 1.1rem;
    }
    
    .category-tab {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .newsletter-form .input-group {
        flex-direction: column;
    }
    
    .newsletter-form .btn {
        margin-top: 1rem;
        width: 100%;
    }
}

/* Education Hero Section */
.education-hero {
    background: linear-gradient(135deg, var(--space-blue), #000033);
    color: white;
    padding: 10rem 0 6rem;
    text-align: center;
    margin-top: 76px;
    position: relative;
    overflow: hidden;
}

.education-hero h1 {
    color: white;
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.education-hero .lead {
    font-size: 1.4rem;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto 2rem;
}

/* Online Courses Section */
.online-courses {
    padding: var(--section-padding);
    background-color: var(--light-gray);
}

.course-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.course-placeholder {
    height: 200px;
    background: linear-gradient(135deg, var(--light-gray), var(--silver-gray));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.course-placeholder:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 25%, rgba(255,255,255,0.1) 50%, transparent 75%);
    background-size: 400% 400%;
    animation: shimmer 2s infinite;
}

.course-placeholder i {
    font-size: 4rem;
    color: var(--quantum-orange);
}

.course-content {
    padding: 1.5rem;
}

.course-content h3 {
    color: var(--space-blue);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.course-info {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
    display: flex;
    gap: 1rem;
}

.course-info li {
    color: var(--dark-gray);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.course-info i {
    color: var(--quantum-orange);
}

/* Popular Science Section */
.popular-science {
    padding: var(--section-padding);
}

.science-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
}

.science-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.science-placeholder {
    height: 250px;
    background: linear-gradient(135deg, var(--light-gray), var(--silver-gray));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.science-placeholder:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 25%, rgba(255,255,255,0.1) 50%, transparent 75%);
    background-size: 400% 400%;
    animation: shimmer 2s infinite;
}

.science-placeholder i {
    font-size: 5rem;
    color: var(--quantum-orange);
}

.science-content {
    padding: 1.5rem;
}

.science-content h3 {
    color: var(--space-blue);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.science-meta {
    display: flex;
    gap: 1.5rem;
    margin: 1rem 0;
    color: var(--dark-gray);
    font-size: 0.9rem;
}

.science-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.science-meta i {
    color: var(--quantum-orange);
}

/* Educational Resources Section */
.educational-resources {
    padding: var(--section-padding);
    background-color: var(--light-gray);
}

.resource-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
}

.resource-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.resource-placeholder {
    height: 180px;
    background: linear-gradient(135deg, var(--light-gray), var(--silver-gray));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.resource-placeholder:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 25%, rgba(255,255,255,0.1) 50%, transparent 75%);
    background-size: 400% 400%;
    animation: shimmer 2s infinite;
}

.resource-placeholder i {
    font-size: 4rem;
    color: var(--quantum-orange);
}

.resource-content {
    padding: 1.5rem;
}

.resource-content h3 {
    color: var(--space-blue);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.btn-link {
    color: var(--quantum-orange);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.btn-link:hover {
    color: var(--space-blue);
}

/* Responsive Design */
@media (max-width: 992px) {
    .course-placeholder,
    .science-placeholder,
    .resource-placeholder {
        height: 180px;
    }
    
    .course-placeholder i,
    .science-placeholder i,
    .resource-placeholder i {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .education-hero h1 {
        font-size: 2.5rem;
    }
    
    .education-hero .lead {
        font-size: 1.2rem;
    }
    
    .course-content h3,
    .science-content h3,
    .resource-content h3 {
        font-size: 1.2rem;
    }
    
    .science-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 576px) {
    .education-hero h1 {
        font-size: 2rem;
    }
    
    .education-hero .lead {
        font-size: 1.1rem;
    }
    
    .course-placeholder,
    .science-placeholder,
    .resource-placeholder {
        height: 150px;
    }
    
    .course-placeholder i,
    .science-placeholder i,
    .resource-placeholder i {
        font-size: 2.5rem;
    }
}

/* Products Hero Section */
.products-hero {
    padding: 8rem 0 6rem;
    background: linear-gradient(135deg, var(--space-blue), #000033);
    color: white;
    margin-top: 76px;
    position: relative;
    overflow: hidden;
}

.products-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.products-hero .lead {
    font-size: 1.4rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--quantum-orange);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Product Section */
.product-section {
    padding: 6rem 0;
    background-color: white;
    position: relative;
}

.product-section:nth-child(even) {
    background-color: var(--light-gray);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    padding: 0 2rem;
}

.section-header h2 {
    font-size: 2.8rem;
    color: var(--space-blue);
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.section-header .subtitle {
    font-size: 1.4rem;
    color: var(--quantum-orange);
    font-weight: 500;
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(255, 111, 0, 0.1);
    border-radius: 2rem;
}

.product-section .row {
    align-items: center;
}

.product-image {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
    transition: transform 0.3s ease;
}

.product-image:hover {
    transform: translateY(-5px);
}

.product-image img {
    width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

.product-image:hover img {
    transform: scale(1.05);
}

.product-content {
    padding: 2rem;
}

.tech-section {
    margin-bottom: 3rem;
}

.tech-section h3 {
    font-size: 1.8rem;
    color: var(--space-blue);
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 1rem;
}

.tech-section h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--quantum-orange);
}

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

.tech-list li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: var(--dark-gray);
    line-height: 1.6;
}

.tech-list li:before {
    content: '•';
    color: var(--quantum-orange);
    font-size: 1.5rem;
    position: absolute;
    left: 0;
    top: 0;
}

.features-section {
    margin-bottom: 3rem;
}

.features-section h3 {
    font-size: 1.8rem;
    color: var(--space-blue);
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 1rem;
}

.features-section h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--quantum-orange);
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
    border: 1px solid rgba(0,0,0,0.05);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.1);
}

.feature-card h4 {
    color: var(--space-blue);
    margin-bottom: 1rem;
    font-size: 1.4rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--dark-gray);
    margin-bottom: 0;
    line-height: 1.6;
}

.applications-section {
    margin-top: 4rem;
    padding-top: 4rem;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.applications-section h3 {
    text-align: center;
    color: var(--space-blue);
    margin-bottom: 3rem;
    font-size: 2rem;
    font-weight: 600;
    position: relative;
    padding-bottom: 1rem;
}

.applications-section h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--quantum-orange);
}

.application-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    height: 100%;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
    border: 1px solid rgba(0,0,0,0.05);
}

.application-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.1);
}

.application-card i {
    font-size: 2.5rem;
    color: var(--quantum-orange);
    margin-bottom: 1.5rem;
}

.application-card h4 {
    color: var(--space-blue);
    margin-bottom: 1rem;
    font-size: 1.4rem;
    font-weight: 600;
}

.application-card p {
    color: var(--dark-gray);
    margin-bottom: 0;
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 991.98px) {
    .products-hero {
        padding: 6rem 0 4rem;
    }
    
    .products-hero h1 {
        font-size: 2.8rem;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2.4rem;
    }
    
    .product-content {
        padding: 1.5rem;
    }
}

@media (max-width: 767.98px) {
    .products-hero {
        padding: 4rem 0 3rem;
    }
    
    .products-hero h1 {
        font-size: 2.4rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .product-section {
        padding: 4rem 0;
    }
    
    .section-header {
        margin-bottom: 3rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .application-card {
        margin-bottom: 1.5rem;
    }
}

/* 产品展示区域样式 */
.products-list {
    padding: 80px 0;
    background: #f8f9fa;
}

.product-section {
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    margin-bottom: 60px;
    overflow: hidden;
}

.product-header {
    display: flex;
    align-items: center;
    padding: 40px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.product-title {
    flex: 1;
}

.product-title h2 {
    font-size: 2.2rem;
    color: #333;
    margin-bottom: 10px;
}

.product-title .subtitle {
    font-size: 1.2rem;
    color: #666;
    font-weight: 500;
}

.product-image {
    flex: 1;
    text-align: right;
}

.product-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.product-details {
    padding: 40px;
}

.tech-overview, .feature-showcase, .application-scenarios {
    margin-bottom: 40px;
}

.tech-overview h3, .feature-showcase h3, .application-scenarios h3 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #eee;
}

.tech-grid, .feature-grid, .scenario-grid {
    display: grid;
    gap: 30px;
}

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

.feature-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.feature-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.feature-item {
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-icon {
    flex-shrink: 0;
}

.feature-icon i {
    font-size: 2rem;
    color: #007bff;
}

.feature-content {
    flex: 1;
}

.feature-content h4 {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 10px;
}

.feature-content p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

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

.tech-item, .scenario-item {
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.tech-item:hover, .scenario-item:hover {
    transform: translateY(-5px);
}

.tech-item i, .scenario-icon i {
    font-size: 2rem;
    color: #007bff;
    margin-bottom: 15px;
}

.tech-item h4, .scenario-content h4 {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 10px;
}

.tech-item p, .scenario-content p {
    color: #666;
    line-height: 1.6;
}

.scenario-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.scenario-icon {
    flex-shrink: 0;
}

.scenario-content {
    flex: 1;
}

@media (max-width: 768px) {
    .product-header {
        flex-direction: column;
        text-align: center;
        padding: 30px;
    }

    .product-image {
        margin-top: 30px;
        text-align: center;
    }

    .product-details {
        padding: 30px;
    }

    .tech-grid, .feature-grid, .scenario-grid {
        grid-template-columns: 1fr;
    }

    .feature-row {
        grid-template-columns: 1fr;
    }
}

/* Research Achievements Section */
.research-achievements {
    padding: 8rem 0;
    background-color: var(--light-gray);
}

.achievements-list {
    max-width: 1200px;
    margin: 0 auto;
}

.achievement-category {
    margin-bottom: 6rem;
}

.achievement-category:last-child {
    margin-bottom: 0;
}

.achievement-category h3 {
    font-size: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--quantum-orange);
    color: var(--space-blue);
}

.achievement-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.achievement-items {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.achievement-item {
    background: white;
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    width: 100%;
}

.achievement-item:hover {
    transform: translateY(-5px);
}

.achievement-item h4 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--space-blue);
    line-height: 1.4;
}

.journal, .patent {
    color: var(--quantum-orange);
    font-weight: 500;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.achievement-item .content {
    color: var(--dark-gray);
    line-height: 1.6;
    font-size: 1.1rem;
    margin-bottom: 0;
}

/* Responsive Design for Achievements */
@media (max-width: 768px) {
    .achievement-item {
        padding: 2rem;
    }
    
    .achievement-item h4 {
        font-size: 1.2rem;
    }
    
    .journal, .patent {
        font-size: 1rem;
    }
    
    .achievement-item .content {
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .achievement-category h3 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }
    
    .achievement-item {
        padding: 1.5rem;
    }
}

/* Research Hero Section */
.research-hero {
    position: relative;
    min-height: 80vh;
    background: linear-gradient(135deg, var(--space-blue), #000033);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 76px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/quantum-pattern.png') center/cover;
    opacity: 0.1;
    animation: pulse 8s infinite;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease-out;
}

.hero-content .lead {
    font-size: 1.8rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 3rem;
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

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

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--quantum-orange);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Research Overview Section */
.research-overview {
    padding: 8rem 0;
    background-color: var(--light-gray);
}

.overview-content {
    padding-right: 4rem;
}

.overview-content h2 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
}

.overview-content .lead {
    font-size: 1.4rem;
    margin-bottom: 2rem;
}

.research-image {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.research-image img {
    width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

.research-image:hover img {
    transform: scale(1.05);
}

.research-features {
    display: grid;
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--space-blue), #000033);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Research Areas Section */
.research-areas {
    padding: 8rem 0;
    background-color: white;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 6rem;
}

.section-header h2 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
}

.section-header .lead {
    font-size: 1.4rem;
    color: var(--dark-gray);
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

.research-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
    position: relative;
    overflow: hidden;
}

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

.research-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--quantum-orange), var(--space-blue));
}

.research-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--space-blue), #000033);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
}

.research-icon i {
    font-size: 2.5rem;
    color: white;
}

.research-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.research-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--dark-gray);
}

.research-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.feature i {
    color: var(--quantum-orange);
    font-size: 1.2rem;
}

.feature span {
    font-size: 1.1rem;
    color: var(--dark-gray);
}

/* Research Partners Section */
.research-partners {
    padding: 8rem 0;
    background-color: var(--transition);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.partner-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
    text-align: center;
}

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

.partner-logo {
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.partner-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.partner-card h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.partner-card p {
    color: var(--dark-gray);
    font-size: 1.1rem;
}

/* Research Team Section */
.research-team {
    padding: 8rem 0;
    background-color: white;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.team-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
    text-align: center;
}

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

.team-content h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.position {
    color: var(--quantum-orange);
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.expertise {
    color: var(--dark-gray);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.team-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--light-gray);
}

.stat {
    text-align: center;
}

.number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--quantum-orange);
    margin-bottom: 0.5rem;
}

.label {
    font-size: 1rem;
    color: var(--dark-gray);
}

/* Animations */
@keyframes pulse {
    0% {
        opacity: 0.1;
    }
    50% {
        opacity: 0.2;
    }
    100% {
        opacity: 0.1;
    }
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .hero-content .lead {
        font-size: 1.5rem;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .overview-content {
        padding-right: 0;
        margin-bottom: 4rem;
    }
    
    .research-grid,
    .partners-grid,
    .team-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content .lead {
        font-size: 1.3rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }
    
    .section-header h2 {
        font-size: 2.2rem;
    }
    
    .research-card,
    .partner-card,
    .team-card {
        padding: 2rem;
    }
    
    .achievement-items li {
        padding: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content .lead {
        font-size: 1.1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .research-grid,
    .partners-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
}

/* News Detail Page Styles */
.news-header {
    background: linear-gradient(135deg, var(--space-blue), #000033);
    color: white;
    padding: 6rem 0 4rem;
    position: relative;
    overflow: hidden;
}

.news-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/quantum-pattern.png') center/cover;
    opacity: 0.1;
    z-index: 1;
}

.news-header-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.news-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.news-category {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.news-date {
    font-size: 0.9rem;
    opacity: 0.8;
}

.news-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.news-summary {
    font-size: 1.4rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

/* News Content */
.news-content {
    padding: 4rem 1.5rem;
    background-color: #f8f9fa;
}

.news-article {
    background: white;
    border-radius: 1rem;
    padding: 3rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* Featured Image */
.featured-image {
    margin-bottom: 3rem;
    position: relative;
}

.featured-image img {
    width: 100%;
    height: auto;
    border-radius: 0.5rem;
}

.image-caption {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    font-size: 0.9rem;
}

/* Article Body */
.article-body {
   
    margin: 0 auto;
}

.article-section {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2rem;
    color: var(--space-blue);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--quantum-orange);
}

.section-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--dark-gray);
}

/* Feature List */
.feature-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.feature-list li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
}

.feature-list li:before {
    content: '•';
    color: var(--quantum-orange);
    font-size: 1.5rem;
    position: absolute;
    left: 0;
    top: 0;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 2rem 0;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(26, 35, 126, 0.05);
    border-radius: 0.5rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--quantum-orange);
    margin-bottom: 0.5rem;
}

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

/* Roadmap */
.roadmap {
    margin: 2rem 0;
}

.roadmap-item {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 1rem;
    background: rgba(26, 35, 126, 0.05);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.roadmap-date {
    font-weight: 600;
    color: var(--quantum-orange);
    min-width: 100px;
}

.roadmap-content {
    flex: 1;
}

/* Article Footer */
.article-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--light-gray);
}

.tags {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tag {
    background: rgba(26, 35, 126, 0.1);
    color: var(--space-blue);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.9rem;
}

.share-buttons {
    display: flex;
    gap: 1rem;
}

.share-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: none;
    background: var(--light-gray);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.share-button:hover {
    background: var(--quantum-orange);
    color: white;
}

/* Sidebar */
.news-sidebar {
    position: sticky;
    top: 2rem;
}

.sidebar-block {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.sidebar-title {
    font-size: 1.5rem;
    color: var(--space-blue);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--quantum-orange);
}

/* Related News */
.related-news-item {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--light-gray);
}

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

.related-news-item .news-meta {
    justify-content: flex-start;
    margin-bottom: 0.5rem;
}

.related-news-item .news-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.read-more {
    color: var(--quantum-orange);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.read-more:hover {
    color: var(--space-blue);
}

/* Categories */
.categories {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.category-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--light-gray);
    border-radius: 0.5rem;
    text-decoration: none;
    color: var(--dark-gray);
    transition: all 0.3s ease;
}

.category-item:hover {
    background: var(--quantum-orange);
    color: white;
}

.category-item i {
    font-size: 1.2rem;
}

.count {
    margin-left: auto;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.8rem;
}

/* Newsletter */
.newsletter p {
    margin-bottom: 1.5rem;
    color: var(--dark-gray);
}

.newsletter-form .input-group {
    display: flex;
    gap: 1rem;
}

.newsletter-form .form-control {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--light-gray);
    border-radius: 0.5rem;
}

.newsletter-form .btn {
    padding: 0.75rem 1.5rem;
    background: var(--quantum-orange);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.newsletter-form .btn:hover {
    background: #e65100;
}

/* Responsive Design */
@media (max-width: 992px) {
    .news-title {
        font-size: 2.5rem;
    }
    
    .news-summary {
        font-size: 1.2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-article {
        padding: 2rem;
    }
}

@media (max-width: 768px) {
    .news-header {
        padding: 4rem 0 3rem;
    }
    
    .news-title {
        font-size: 2rem;
    }
    
    .news-meta {
        flex-direction: column;
        gap: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .roadmap-item {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .roadmap-date {
        min-width: auto;
    }
    
    .newsletter-form .input-group {
        flex-direction: column;
    }
}

@media (max-width: 576px) {
    .news-header {
        padding: 3rem 0 2rem;
    }
    
    .news-title {
        font-size: 1.8rem;
    }
    
    .news-summary {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .news-article {
        padding: 1.5rem;
    }
    
    .sidebar-block {
        padding: 1.5rem;
    }
}

/* Footer QR Code */
.qrcode-container {
    text-align: center;
    margin-top: 1rem;
}

.qrcode {
    width: 120px;
    height: 120px;
    background: white;
    padding: 8px;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.qrcode-text {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: #6c757d;
}

@media (max-width: 768px) {
    .qrcode {
        width: 100px;
        height: 100px;
    }
}