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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    padding: 20px;
}

a {
    color: #3498db;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式 */
header {
    background-color: #2c3e50;
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
    margin: 0;
    font-size: 2.2em;
}

header p {
    margin: 5px 0 0;
    font-size: 1.1em;
    opacity: 0.9;
}

/* 导航菜单 */
nav ul {
    list-style: none;
    padding: 0;
    margin: 20px 0 0;
    display: flex;
    gap: 20px;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 5px 0;
    transition: all 0.3s;
}

nav a:hover {
    opacity: 0.8;
    border-bottom: 2px solid #3498db;
}

/* 搜索区域 */
.search-section {
    background-color: white;
    padding: 30px;
    margin: 30px 0;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    text-align: center;
}

.search-section h2 {
    margin-top: 0;
    color: #2c3e50;
}

.search-section input[type="text"] {
    width: 70%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1em;
}

.search-section button {
    padding: 12px 25px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.3s;
}

.search-section button:hover {
    background-color: #2980b9;
}

.popular-tags {
    margin-top: 20px;
}

.popular-tags a {
    display: inline-block;
    margin: 0 5px;
    padding: 5px 10px;
    background-color: #f1f1f1;
    border-radius: 3px;
    color: #333;
    font-size: 0.9em;
}

.popular-tags a:hover {
    background-color: #e1e1e1;
}

/* 模型展示区 */
.featured-models {
    margin: 30px 0;
}

.featured-models h2 {
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
}

.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.model-card {
    background-color: white;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.model-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.model-card h3 {
    margin: 15px 15px 5px;
    font-size: 1.2em;
}

.model-card p {
    margin: 0 15px 15px;
    color: #666;
    font-size: 0.9em;
}

.model-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background-color: #f9f9f9;
    border-top: 1px solid #eee;
    font-size: 0.8em;
}

.download-btn {
    padding: 5px 10px;
    background-color: #27ae60;
    color: white;
    border-radius: 3px;
    font-size: 0.9em;
}

.download-btn:hover {
    background-color: #219653;
    text-decoration: none;
}

/* 分类区域 */
.categories {
    margin: 40px 0;
}

.categories h2 {
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toggle-categories {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
    display: none;
}

.toggle-categories:hover {
    background-color: #2980b9;
}

.category-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.category-item {
    background-color: white;
    border-radius: 5px;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s;
}

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

.category-item h3 {
    margin: 0 0 10px;
    color: #2c3e50;
    font-size: 1.1em;
}

.category-item p {
    margin: 0;
    color: #666;
    font-size: 0.9em;
    height: 40px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* 特殊按钮样式 */
.premium-btn {
    background-color: #f39c12;
}

.premium-btn:hover {
    background-color: #e67e22;
}

/* 分类导航样式 */
.category-nav {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.category-nav a {
    display: block;
    padding: 10px;
    background-color: white;
    border-radius: 5px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: all 0.3s;
    color: #333;
}

.category-nav a:hover {
    background-color: #3498db;
    color: white;
    transform: translateY(-3px);
}

/* SEO内容区 */
.seo-content {
    background-color: white;
    padding: 30px;
    margin: 40px 0;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.seo-content h2 {
    color: #2c3e50;
    margin-top: 0;
}

.seo-content p {
    margin-bottom: 15px;
}

/* 页脚 */
footer {
    background-color: #2c3e50;
    color: white;
    padding: 40px 0 20px;
    margin-top: 50px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-column h3 {
    margin-top: 0;
    font-size: 1.2em;
    color: #3498db;
}

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

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

.footer-column a {
    color: #ddd;
}

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

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    font-size: 0.9em;
    color: #bbb;
}

.copyright a {
    color: #bbb;
}

.copyright a:hover {
    color: white;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .category-list {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        gap: 10px;
    }
    
    .search-section input[type="text"] {
        width: 100%;
        margin-bottom: 10px;
    }
    
    .model-grid {
        grid-template-columns: 1fr;
    }
    
    .category-list {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 576px) {
    .toggle-categories {
        display: inline-block;
    }
    
    .category-list {
        display: none;
        grid-template-columns: repeat(2, 1fr);
    }
    
    .category-list.show {
        display: grid;
    }
    
    .category-item {
        padding: 15px;
    }
    
    .category-item h3 {
        font-size: 15px;
    }
    
    .category-item p {
        font-size: 13px;
        height: 36px;
    }
}

@media (max-width: 400px) {
    .category-list {
        grid-template-columns: 1fr;
    }
    
    .toggle-categories {
        padding: 6px 12px;
        font-size: 13px;
    }

}




@media (max-width: 768px) {
    #toubu {
        display: none;
    }
    
    .seo-content {
        display: none;
    }

    #miaoshu {
        display: none;
    }





}













    /* 基础样式重置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    }
    
    /* 固定顶部导航栏 */
    .fixed-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        background: linear-gradient(135deg, #2c3e50, #4a6491);
        padding: 10px 20px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }
    
    .logo {
        color: white;
        font-size: 22px;
        font-weight: bold;
        text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
    }
    
    /* 导航按钮容器 */
    .nav-buttons {
        display: flex;
        gap: 12px;
        align-items: center;
    }
    
    /* 通用导航链接样式 */
    .nav-buttons a {
        padding: 8px 16px;
        border-radius: 20px;
        color: white;
        text-decoration: none;
        font-size: 14px;
        font-weight: 500;
        transition: all 0.3s ease;
        white-space: nowrap;
    }
    
    /* 普通导航链接 */
    .nav-buttons a:not(.login-btn) {
        background-color: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
    }
    
    .nav-buttons a:not(.login-btn):hover {
        background-color: rgba(255, 255, 255, 0.2);
        transform: translateY(-2px);
    }
    
    /* 登录按钮特殊样式 */
    .login-btn {
        padding: 8px 16px;
        border-radius: 20px;
        color: white;
        text-decoration: none;
        font-size: 14px;
        font-weight: 500;
        transition: all 0.3s ease;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }
    
    #loginLink {
        background: linear-gradient(135deg, #3498db, #2980b9);
    }
    
    #loginLink:hover {
        background: linear-gradient(135deg, #2980b9, #2573a7);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    }
    
    #huiyuanLink {
        background: linear-gradient(135deg, #e74c3c, #c0392b);
    }
    
    #huiyuanLink:hover {
        background: linear-gradient(135deg, #c0392b, #a93226);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    }
    
    /* 响应式设计 */
    @media (max-width: 768px) {
        .fixed-header {
            padding: 10px 15px;
        }
        
        .logo {
            font-size: 18px;
        }
        
        .nav-buttons {
            gap: 8px;
        }
        
        .nav-buttons a {
            padding: 6px 12px;
            font-size: 13px;
        }
    }
    
    @media (max-width: 576px) {
        .fixed-header {
            flex-direction: column;
            padding: 8px 10px;
        }
        
        .logo {
            margin-bottom: 8px;
        }
        
        .nav-buttons {
            flex-wrap: wrap;
            justify-content: center;
        }
        
        .nav-buttons a {
            padding: 5px 10px;
            font-size: 12px;
        }
    }













    /* 文章内容样式 */
    .article-content {
        max-width: 1200px;
        margin: 40px auto;
        padding: 30px;
        background: white;
        border-radius: 10px;
        box-shadow: 0 5px 25px rgba(0,0,0,0.1);
    }

    .article-header {
        margin-bottom: 30px;
        padding-bottom: 20px;
        border-bottom: 1px solid #eee;
    }

    .article-title {
        font-size: 2.2rem;
        color: #2c3e50;
        margin-bottom: 10px;
    }

    .article-meta {
        color: #7f8c8d;
        font-size: 0.9rem;
    }

    /* 图片画廊样式 */
    .image-gallery {
        margin: 40px 0;
    }

    .main-image-container {
        position: relative;
        margin-bottom: 20px;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    }

    .main-image {
        width: 100%;
        height: auto;
        display: block;
        transition: transform 0.3s;
    }

    .main-image:hover {
        transform: scale(1.02);
    }

    .image-caption {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(0,0,0,0.7);
        color: white;
        padding: 10px 15px;
        font-size: 0.9rem;
    }

    /* 缩略图导航 */
    .thumbnail-nav {
        display: flex;
        gap: 10px;
        margin-bottom: 30px;
        overflow-x: auto;
        padding-bottom: 10px;
    }

    .thumbnail {
        width: 80px;
        height: 60px;
        border-radius: 4px;
        overflow: hidden;
        cursor: pointer;
        opacity: 0.7;
        transition: all 0.3s;
        border: 2px solid transparent;
    }

    .thumbnail:hover, .thumbnail.active {
        opacity: 1;
        border-color: #3498db;
    }

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

    /* 多角度视图 */
    .multi-angle-view {
        margin: 40px 0;
    }

    .multi-angle-view h3 {
        font-size: 1.5rem;
        color: #2c3e50;
        margin-bottom: 20px;
        padding-bottom: 10px;
        border-bottom: 2px solid #3498db;
    }

    .angle-images {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 20px;
    }

    .angle-image {
        position: relative;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    }

    .angle-image img {
        width: 100%;
        height: 200px;
        object-fit: cover;
    }

    .angle-label {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(52, 152, 219, 0.9);
        color: white;
        padding: 8px;
        text-align: center;
        font-size: 0.9rem;
    }

    /* 三栏布局样式 */
    .model-details {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
        margin: 40px 0;
    }
    
    .detail-card {
        background: white;
        padding: 25px;
        border-radius: 10px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        transition: transform 0.3s;
    }
    
    .detail-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    }
    
    .detail-card h3 {
        color: #2c3e50;
        margin-top: 0;
        padding-bottom: 15px;
        border-bottom: 2px solid #f1f1f1;
        font-size: 1.3rem;
    }
    
    /* 免责声明样式 */
    .disclaimer-card ul {
        list-style: none;
        padding: 0;
    }
    
    .disclaimer-card li {
        margin-bottom: 12px;
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .disclaimer-card li strong {
        color: #e74c3c;
    }
    
    /* 模型描述样式 */
    .description-card p {
        font-size: 0.95rem;
        line-height: 1.8;
        color: #555;
    }
    
    /* 微信公众号样式 */
    .wechat-card {
        text-align: center;
    }
    
    .wechat-qrcode {
        width: 150px;
        height: 150px;
        margin: 0 auto 15px;
        border: 1px solid #eee;
        padding: 5px;
        background: white;
    }
    
    .wechat-group {
        margin-top: 20px;
        padding-top: 20px;
        border-top: 1px dashed #ddd;
    }
    
    .contact-info {
        margin-top: 15px;
        font-size: 0.9rem;
        color: #666;
    }
    
    .contact-info strong {
        color: #e74c3c;
    }

    /* 下载按钮 */
    .download-section {
        text-align: center;
        margin: 40px 0;
    }

    .download-btn {
        display: inline-flex;
        align-items: center;
        background: linear-gradient(135deg, #3498db, #2980b9);
        color: white;
        padding: 15px 30px;
        border-radius: 50px;
        text-decoration: none;
        font-size: 1.2rem;
        font-weight: 500;
        box-shadow: 0 10px 20px rgba(52, 152, 219, 0.3);
        transition: all 0.3s;
    }

    .download-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 15px 25px rgba(52, 152, 219, 0.4);
    }

    .btn-icon {
        font-size: 1.5rem;
        margin-right: 10px;
    }

    .btn-text {
        margin-right: 15px;
    }

    .btn-points {
        background: rgba(255,255,255,0.2);
        padding: 5px 15px;
        border-radius: 20px;
        font-size: 1rem;
    }

    /* 响应式设计 */
    @media (max-width: 768px) {
        .article-content {
            padding: 20px;
            max-width: 100% !important;

        }
        
        .article-title {
            font-size: 1.8rem;
        }
        
        .angle-images {
            grid-template-columns: 1fr;
        }
        
        .download-btn {
            padding: 12px 25px;
            font-size: 1.1rem;
        }
    }









    /* 固定footer样式 */
    .fixed-footer-container {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background-color: #2c3e50;
        padding: 15px 0;
        z-index: 9999;
        box-shadow: 0 -2px 10px rgba(0,0,0,0.2);
    }
    
    .footer-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
        position: relative;
    }
    
    /* 按钮容器 - 修改为flex布局 */
    .footer-buttons {
        display: flex;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        gap: 20px;
    }
    
    /* 下载按钮样式 */
    .download-btn-center {
        display: inline-flex;
        align-items: center;
        background: linear-gradient(135deg, #3498db, #2980b9);
        color: white;
        padding: 12px 30px;
        border-radius: 50px;
        text-decoration: none;
        font-size: 1.1rem;
        font-weight: 500;
        box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
        transition: all 0.3s;
        white-space: nowrap;
    }
    
    .download-btn-center:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 20px rgba(52, 152, 219, 0.6);
    }
    
    /* 反馈按钮样式 */
    .feedback-btn-center {
        display: inline-flex;
        align-items: center;
        background: linear-gradient(135deg, #f39c12, #e67e22);
        color: white;
        padding: 12px 30px;
        border-radius: 50px;
        text-decoration: none;
        font-size: 1.1rem;
        font-weight: 500;
        box-shadow: 0 5px 15px rgba(243, 156, 18, 0.4);
        transition: all 0.3s;
        white-space: nowrap;
    }
    
    .feedback-btn-center:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 20px rgba(243, 156, 18, 0.6);
    }
    
    /* 共用按钮元素样式 */
    .btn-icon-center {
        font-size: 1.3rem;
        margin-right: 8px;
    }
    
    .btn-text-center {
        margin-right: 10px;
    }
    
    .btn-points-center {
        background: rgba(255,255,255,0.2);
        padding: 3px 10px;
        border-radius: 20px;
        font-size: 0.9rem;
    }
    
    .copyright {
        color: #bdc3c7;
        font-size: 0.8rem;
        text-align: right;
        flex: 1;
    }
    
    /* 响应式设计 */
    @media (max-width: 768px) {
        .footer-content {
            flex-direction: column;
            gap: 10px;
        }
        
        .footer-buttons {
            position: static;
            transform: none;
            flex-direction: row;
            justify-content: center;
            margin: 10px 0;
            gap: 10px;
        }
        
        .download-btn-center,
        .feedback-btn-center {
            padding: 10px 20px;
            font-size: 1rem;
        }
        
        .copyright {
            text-align: center;
            margin-top: 10px;
        }
    }