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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

/* 头部样式 */
.header {
    background-color: #252d47;
    color: #fff;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header .inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo h1 {
    font-size: 24px;
    font-weight: bold;
}

.menu ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.menu li {
    margin-left: 0;
}

.menu a {
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    padding: 8px 12px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.menu a:hover {
    color: #fff;
    background-color: rgba(255,255,255,0.1);
}

/* 横幅样式 */
.banner {
    background: linear-gradient(135deg, #007bff, #00c6ff);
    color: #fff;
    padding: 120px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.1)" /></svg>');
    background-size: cover;
}

.banner .inner {
    padding: 0 20px;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.banner-content {
    animation: fadeInUp 1s ease-out;
}

.banner h2 {
    font-size: 42px;
    margin-bottom: 25px;
    font-weight: bold;
    line-height: 1.2;
}

.banner p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    background-color: #fff;
    color: #007bff;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 30px;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.btn:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

/* 通用部分样式 */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h3 {
    font-size: 32px;
    color: #252d47;
    font-weight: bold;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 16px;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 优势部分样式 */
.advantages {
    padding: 80px 0;
    background-color: #fff;
}

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

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.advantage-card {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    background-color: #e3f2fd;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.advantage-card:hover .advantage-icon {
    background-color: #bbdefb;
    transform: scale(1.1);
}

.advantage-content {
    flex: 1;
}

.advantage-content h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #252d47;
    font-weight: bold;
}

.advantage-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 注册流程部分 */
.registration-section {
    padding: 80px 0;
    background-color: #f5f5f5;
}

.registration-section .inner {
    padding: 0 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.registration-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

.registration-card {
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: all 0.3s ease;
}

.registration-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.registration-header {
    background-color: #007bff;
    color: #fff;
    padding: 20px 30px;
}

.registration-header h4 {
    font-size: 18px;
    font-weight: bold;
    margin: 0;
}

.registration-steps {
    padding: 30px;
}

.step-item {
    margin-bottom: 25px;
    position: relative;
    padding-left: 25px;
}

.step-item::before {
    content: counter(step-counter);
    counter-increment: step-counter;
    position: absolute;
    left: 0;
    top: 0;
    width: 20px;
    height: 20px;
    background-color: #007bff;
    color: #fff;
    border-radius: 50%;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.registration-steps {
    counter-reset: step-counter;
}

.step-item h5 {
    font-size: 16px;
    margin-bottom: 10px;
    color: #252d47;
    font-weight: bold;
}

.step-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.registration-btn {
    padding: 0 30px 30px;
    text-align: center;
}

/* 常见问题部分 */
.faq {
    padding: 80px 0;
    background-color: #fff;
}

.faq .inner {
    padding: 0 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.faq-container {
    display: grid;
    gap: 20px;
}

.faq-item {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    background-color: #f0f0f0;
}

.faq-item a {
    text-decoration: none;
    color: #333;
    display: block;
}

.faq-item h4 {
    font-size: 16px;
    margin-bottom: 10px;
    color: #252d47;
    font-weight: bold;
}

.faq-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 页脚样式 */
.footer {
    background-color: #252d47;
    color: #fff;
    padding: 60px 0;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info h4 {
    font-size: 20px;
    margin-bottom: 15px;
    font-weight: bold;
}

.footer-info p {
    font-size: 14px;
    opacity: 0.8;
    max-width: 400px;
}

.footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-links a {
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-copyright {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-copyright p {
    font-size: 14px;
    opacity: 0.6;
    margin: 0;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .header .inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .menu ul {
        width: 100%;
        justify-content: space-between;
    }
    
    .banner h2 {
        font-size: 32px;
    }
    
    .banner p {
        font-size: 16px;
    }
    
    .advantage-grid {
        grid-template-columns: 1fr;
    }
    
    .registration-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header h3 {
        font-size: 24px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}



/* 列表页样式 */
.list-content {
    padding: 40px 0;
    background-color: #fff;
}

.list-content .inner {
    padding: 0 20px;
}

.list-content h2 {
    font-size: 24px;
    margin-bottom: 30px;
    color: #252d47;
}

.article-list {
    display: grid;
    gap: 20px;
}

.article-item {
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.article-item a {
    text-decoration: none;
    color: #333;
}

.article-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #252d47;
}

.article-item .postdate {
    font-size: 12px;
    color: #999;
    margin-bottom: 10px;
}

.article-item .info {
    font-size: 14px;
    color: #666;
}

/* 内容页样式 */
.article-content {
    padding: 40px 0;
    background-color: #fff;
}

.article-content .inner {
    padding: 0 20px;
    max-width: 800px;
    margin: 0 auto;
}

.article-content h2 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #252d47;
}

.article-content .postdate {
    font-size: 14px;
    color: #999;
    margin-bottom: 30px;
}

.article-content .content {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 40px;
}

.article-content .prev-next {
    display: flex;
    justify-content: space-between;
    border-top: 1px solid #ddd;
    padding-top: 20px;
}

.article-content .prev-next a {
    color: #007bff;
    text-decoration: none;
}

.article-content .prev-next a:hover {
    text-decoration: underline;
}

/* 底部样式 */
.footer {
    background-color: #252d47;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

.footer .inner {
    padding: 0 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .inner {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .menu ul {
        margin-top: 20px;
    }
    
    .menu li {
        margin-left: 0;
        margin-right: 20px;
    }
    
    .banner h2 {
        font-size: 28px;
    }
    
    .advantage-list {
        grid-template-columns: 1fr;
    }
    
    .article-content .prev-next {
        flex-direction: column;
        gap: 10px;
    }
}