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

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0052a3;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    background-color: #fff;
}

/* 导航栏样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    height: 80px;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin: 0 15px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-size: 14px;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #0066cc;
}

.nav-links li:first-child a {
    color: #ff6b35;
}

.search-container {
    display: flex;
    align-items: center;
}

.search-container input {
    width: 180px;
    height: 32px;
    padding: 0 15px;
    border: 1px solid #e0e0e0;
    border-radius: 16px;
    outline: none;
    font-size: 14px;
}

.search-container button {
    background: none;
    border: none;
    cursor: pointer;
    margin-left: -30px;
    font-size: 16px;
    color: #999;
}

/* 面包屑导航 */
.breadcrumb {
    max-width: 1200px;
    margin: 20px auto 0;
    padding: 0 20px;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    /* color: #0066cc; */
}

.breadcrumb span {
    margin: 0 8px;
    color: #ccc;
}

/* 主内容区样式 */
.main-container {
    max-width: 1200px;
    margin: 30px auto 60px;
    padding: 0 20px;
    display: flex;
    gap: 40px;
}

.content-section {
    flex: 1;
}

/* 白皮书头部 */
.whitepaper-header {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e0e0e0;
}

.whitepaper-cover {
    width: 200px;
    height: 280px;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.whitepaper-cover img {
    width: 100%;
    height: 100%;

}

.whitepaper-info {
    flex: 1;
}

.whitepaper-info h1 {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
}

.whitepaper-meta {
    margin-bottom: 30px;
}

.whitepaper-meta p {
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
}

.download-btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: #ff6b35;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-decoration: none;
}

.download-btn:hover {
    background-color: #ff5722;
    color: #fff;
}

.download-btn:active {
    transform: translateY(1px);
}

/* 白皮书内容 */
.whitepaper-content {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
}

.whitepaper-content p {
    margin-bottom: 20px;
}

.whitepaper-content strong {
    font-weight: bold;
}

.whitepaper-content ul {
    margin: 20px 0;
    padding-left: 20px;
}

.whitepaper-content li {
    margin-bottom: 10px;
}

/* 侧边栏样式 */
.sidebar {
    width: 300px;
    flex-shrink: 0;
}

.sidebar-section {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 30px;

}

.sidebar-section h3 {
    font-size: 16px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #E0E0E0;
}

.related-list {
    list-style: none;
}

.related-list li {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
}

.related-list li:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.related-list a {
    display: block;
    text-decoration: none;
    color: #333;
    font-size: 14px;
    transition: color 0.3s ease;
}

.related-list a:hover {
    color: #0066cc;
}

.qrcode-section {
    text-align: center;
}

.qrcode-section img {
    width: 150px;
    height: 150px;
    margin-bottom: 10px;
}

.qrcode-section p {
    font-size: 12px;
    color: #666;
}

/* 页脚样式 */
footer {
    background-color: #fafafa;
    border-top: 1px solid #f0f0f0;
    padding: 40px 0;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.footer-column {
    width: 20%;
    min-width: 150px;
    margin-bottom: 20px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 500;
    color: #333;
    margin-bottom: 20px;
}

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

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

.footer-column a {
    text-decoration: none;
    color: #666;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #0066cc;
}

.footer-column .contact-phone {
    font-size: 18px;
    font-weight: bold;
    color: #ff6b35;
    margin-bottom: 20px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.footer-bottom p {
    font-size: 12px;
    color: #999;
    line-height: 1.8;
}

/* 响应式设计 - 平板端 */
@media (max-width: 768px) {

    /* 导航栏响应式 */
    header {
        height: 60px;
    }

    .nav-container {
        padding: 0 15px;
    }

    .nav-links {
        display: none;
    }

    .search-container input {
        width: 120px;
        font-size: 12px;
    }

    /* 面包屑响应式 */
    .breadcrumb {
        padding: 0 15px;
        font-size: 12px;
    }

    /* 主内容区响应式 */
    .main-container {
        flex-direction: column;
        padding: 0 15px;
        gap: 30px;
        margin-top: 20px;
    }

    .sidebar {
        width: 100%;
        order: -1;
    }

    /* 白皮书头部响应式 */
    .whitepaper-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 20px;
    }

    .whitepaper-cover {
        width: 160px;
        height: 220px;
    }

    .whitepaper-cover img {
        width: 100px;
    }

    .whitepaper-info h1 {
        font-size: 20px;
    }

    /* 内容响应式 */
    .whitepaper-content {
        font-size: 15px;
    }

    /* 页脚响应式 */
    .footer-container {
        padding: 0 15px;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-column {
        width: 100%;
        margin-bottom: 30px;
        padding-bottom: 20px;
        border-bottom: 1px solid #f0f0f0;
    }

    .footer-column:last-child {
        border-bottom: none;
        margin-bottom: 0;
    }

    .footer-column h4 {
        font-size: 16px;
        margin-bottom: 15px;
    }

    .footer-column .contact-phone {
        font-size: 16px;
    }
}

/* 响应式设计 - 小屏幕手机 */
@media (max-width: 480px) {
    .nav-container {
        padding: 0 10px;
    }

    .logo span {
        font-size: 16px;
    }

    .search-container {
        display: none;
    }

    .breadcrumb {
        padding: 0 10px;
    }

    .main-container {
        padding: 0 10px;
    }

    .whitepaper-cover {
        width: 200px;
        height: 200px;
    }

    .whitepaper-cover img {
        width: 100%;
    }

    .whitepaper-info h1 {
        font-size: 18px;
    }

    .whitepaper-meta p {
        font-size: 13px;
    }

    .download-btn {
        padding: 10px 20px;
        font-size: 15px;
    }

    .whitepaper-content {
        font-size: 14px;
    }

    .sidebar-section {
        padding: 15px;
    }

    .sidebar-section h3 {
        font-size: 15px;
    }

    .related-list a {
        font-size: 13px;
    }

    .qrcode-section img {
        width: 120px;
        height: 120px;
    }
}