/* 官网样式 */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.nav-brand h1 {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2px;
}

.nav-tagline {
    font-size: 12px;
    color: #666;
    font-weight: 500;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #667eea;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* 首页Banner样式 */
.hero-section {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-left {
    color: white;
}

.hero-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-title .highlight {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 30px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: white;
    color: #667eea;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-outline {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-outline:hover {
    background: white;
    color: #667eea;
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
}

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

.stat-number {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
}

.hero-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.tag {
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 12px;
    backdrop-filter: blur(10px);
}

/* Banner图片样式 */
.hero-right {
    position: relative;
}

.hero-banner {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.banner-image {
    width: 100%;
    height: 500px;
    object-fit: cover;
    display: block;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 20px;
}

.overlay-item {
    position: absolute;
    color: white;
    font-size: 12px;
}

.overlay-item.top-right {
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-indicator {
    width: 8px;
    height: 8px;
    background: #4facfe;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.overlay-item.middle-left {
    top: 50%;
    left: 20px;
    transform: translateY(-50%);
}

.ai-gauge {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.ai-gauge::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    border: 3px solid transparent;
    border-top-color: #4facfe;
    border-radius: 50%;
    animation: spin 3s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.gauge-text {
    font-size: 10px;
    font-weight: 600;
}

.overlay-item.bottom-left {
    bottom: 20px;
    left: 20px;
}

.data-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.data-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.data-details {
    display: flex;
    flex-direction: column;
}

.data-label {
    font-size: 10px;
    opacity: 0.8;
}

.data-value {
    font-size: 12px;
    font-weight: 600;
}

.overlay-item.middle-right {
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
}

.performance-icon {
    font-size: 24px;
    color: #4facfe;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { text-shadow: 0 0 5px #4facfe; }
    to { text-shadow: 0 0 20px #4facfe, 0 0 30px #4facfe; }
}

.overlay-item.bottom-right {
    bottom: 20px;
    right: 20px;
    text-align: right;
}

.performance-index {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.performance-label {
    font-size: 10px;
    opacity: 0.8;
}

.performance-value {
    font-size: 18px;
    font-weight: 700;
    color: #4facfe;
}

/* 通用区块样式 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    color: #333;
}

.section-description {
    font-size: 16px;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.section-cta {
    text-align: center;
    margin-top: 40px;
}

/* 产品区块样式 */
.products-section {
    padding: 100px 0;
    background: #f8f9fa;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.product-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: #ff6b6b;
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
}

.product-image {
    height: 200px;
    overflow: hidden;
}

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

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

.product-content {
    padding: 25px;
}

.product-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #333;
}

.product-description {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.product-link:hover {
    color: #764ba2;
}

/* 开源项目区块样式 */
.projects-section {
    padding: 100px 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.project-card {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 20px;
    padding: 30px;
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    border-color: #667eea;
}

.project-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.project-icon i {
    font-size: 24px;
    color: white;
}

.project-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #333;
}

.project-description {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.project-tags .tag {
    background: #f8f9fa;
    color: #667eea;
    padding: 4px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 500;
}

.project-stats {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    font-size: 12px;
    color: #666;
}

.project-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: color 0.3s ease;
}

.project-link:hover {
    color: #764ba2;
}

/* 媒体内容区块样式 */
.media-section {
    padding: 100px 0;
    background: #f8f9fa;
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.media-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.media-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.media-thumbnail {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.media-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.media-card:hover .media-thumbnail img {
    transform: scale(1.05);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.play-button:hover {
    background: white;
    transform: translate(-50%, -50%) scale(1.1);
}

.play-button i {
    font-size: 20px;
    color: #667eea;
    margin-left: 3px;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.media-content {
    padding: 25px;
}

.media-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #333;
}

.media-description {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.media-stats {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 12px;
    color: #666;
}

.media-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: color 0.3s ease;
}

.media-link:hover {
    color: #764ba2;
}

/* 合作邀请区块样式 */
.collaboration-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.collaboration-content {
    max-width: 800px;
    margin: 0 auto;
}

.collaboration-content .section-tag {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.collaboration-content .section-title {
    color: white;
}

.collaboration-content .section-description {
    color: rgba(255, 255, 255, 0.9);
}

.collaboration-cta {
    margin: 40px 0;
}

.collaboration-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
}

.collaboration-stats .stat-card {
    text-align: center;
}

.collaboration-stats .stat-number {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 5px;
}

.collaboration-stats .stat-label {
    font-size: 14px;
    opacity: 0.8;
}

/* 页脚样式 */
.footer {
    background: #1a1a2e;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    color: #ccc;
    margin-bottom: 20px;
    line-height: 1.6;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: #667eea;
    transform: translateY(-2px);
}

.footer-center h4,
.footer-right h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #667eea;
}

.contact-info p {
    color: #ccc;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-info i {
    color: #667eea;
    width: 16px;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-copyright p {
    color: #999;
    font-size: 14px;
}

.footer-legal {
    display: flex;
    gap: 20px;
}

.footer-legal a {
    color: #999;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-legal a:hover {
    color: #667eea;
}

/* 新闻区块样式 */
.news-section {
    padding: 100px 0;
    background: #f8f9fa;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.news-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: #ff6b6b;
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
}

.news-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

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

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

.news-content {
    padding: 25px;
}

.news-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 12px;
    color: #666;
}

.news-date {
    color: #667eea;
    font-weight: 600;
}

.news-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #333;
    line-height: 1.4;
}

.news-summary {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.news-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.news-link:hover {
    color: #764ba2;
}

/* 关于我们区块样式 */
.about-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content .section-tag {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.about-content .section-title {
    color: white;
}

.about-content .section-description {
    color: rgba(255, 255, 255, 0.9);
}

.about-cta {
    margin: 40px 0;
}

.about-cta .btn-primary {
    background: white;
    color: #667eea;
}

.about-cta .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.about-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
}

.about-stats .stat-card {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 30px 20px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.about-stats .stat-number {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 5px;
    color: white;
}

.about-stats .stat-label {
    font-size: 14px;
    opacity: 0.8;
    color: white;
}

/* 联系我们区块样式 */
.contact-section {
    padding: 100px 0;
    background: #f8f9fa;
}

.contact-form-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 600px;
}

.contact-form {
    background: white;
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 600px;
}

.contact-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 10px;
    text-align: center;
}

.title-part1 {
    color: #333;
}

.title-part2 {
    color: #667eea;
}

.title-underline {
    width: 60px;
    height: 3px;
    background: #667eea;
    margin: 0 auto 20px;
}

.contact-description {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
    font-size: 16px;
    line-height: 1.6;
}

.contact-form-fields {
    width: 100%;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.contact-form input,
.contact-form textarea,
.contact-form-fields input,
.contact-form-fields textarea {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: white;
    box-sizing: border-box;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form-fields input:focus,
.contact-form-fields textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px  #667eea;
}

.contact-form textarea,
.contact-form-fields textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    width: 100%;
    padding: 15px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background: linear-gradient(135deg, #7288ea 0%, #8566a3 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px  #667eea;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .navbar .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        gap: 20px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .products-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .media-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .featured-news-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .collaboration-stats {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-legal {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

/* 精选新闻区块样式 */
.featured-news-section {
    padding: 100px 0;
    background: #f8f9fa;
}

.featured-news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.featured-news-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.featured-news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.featured-news-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: #ff6b6b;
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
}

.featured-news-image {
    height: 200px;
    overflow: hidden;
}

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

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

.featured-news-content {
    padding: 25px;
}

.featured-news-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #333;
}

.featured-news-description {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.featured-news-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.featured-news-link:hover {
    color: #764ba2;
}

/* 响应式设计 - 精选新闻 */
@media (max-width: 768px) {
    .featured-news-grid {
        grid-template-columns: 1fr;
    }
}