/* 重置默认样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
    background-color: #f5f5f5;
}

a{
    text-decoration: none;
}
/* 头部样式 */
.header {
    background-color: #2c2c2c;
    height: 60px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

/* Logo区域 */
.logo-section {
    display: flex;
    align-items: center;
}

.logo {
    height: 40px;
    width: auto;
}

/* 导航菜单 */
.nav-menu {
    flex: 1;
    margin-left: 40px;
}

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

.nav-item {
    position: relative;
}

.nav-link {
    color: #ffffff;
    text-decoration: none;
    font-size: 14px;
    padding: 8px 0;
    display: flex;
    align-items: center;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #4a9eff;
}

.dropdown-arrow {
    margin-left: 6px;
    font-size: 10px;
    color: #999;
    transition: transform 0.3s ease;
}

.nav-link:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* 搜索区域 */
.search-section {
    flex: 1;
    max-width: 300px;
    margin: 0 30px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    width: 100%;
    height: 36px;
    padding: 0 40px 0 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    background-color: #fff;
}

.search-input:focus {
    border-color: #4a9eff;
}

.search-btn {
    position: absolute;
    right: 8px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    color: #666;
    padding: 6px;
    border-radius: 2px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover {
    color: #4a9eff;
    background-color: rgba(74, 158, 255, 0.1);
}

/* 用户操作区域 */
.user-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-link {
    color: #ffffff;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.user-link:hover {
    color: #4a9eff;
}

.divider {
    color: #666;
    font-size: 12px;
}

.publish-btn {
    background: linear-gradient(135deg, #4a9eff 0%, #1e7ce8 100%);
    color: #ffffff;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.publish-btn:hover {
    background: linear-gradient(135deg, #1e7ce8 0%, #4a9eff 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(74, 158, 255, 0.3);
}

/* 主要内容区域 */
.main-content {
    margin-top: 60px;
    min-height: calc(100vh - 60px);
    background-color: #f8f9fa;
}

/* 广告位样式 */
.advertisement-banner {
    background-color: #f8f9fa;
    padding: 10px 0;
    width: 100%;
}

.ad-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.ad-image {
    max-width: 1400px;
    width: 100%;
    height: 110px;
    overflow: hidden;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
}

.ad-image a {
    display: block;
    width: 100%;
    height: 100%;
}

.banner-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    margin: 0 auto;
}

/* 响应式设计 */
@media (max-width: 1440px) {
    .ad-container {
        padding: 0 20px;
    }
    
    .ad-image {
        width: calc(100% - 40px);
        max-width: 1360px;
    }
}

@media (max-width: 768px) {
    .advertisement-banner {
        padding: 5px 0;
    }
    
    .ad-container {
        padding: 0 10px;
    }
    
    .ad-image {
        height: 80px;
        width: calc(100% - 20px);
    }
}

/* 分类导航模块 */
.category-nav {
    background-color: #ffffff;
    border-bottom: 1px solid #e6e6e6;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.category-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px 20px;
}

.category-row {
    display: flex;
    align-items: flex-start;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

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

.category-label {
    font-size: 14px;
    color: #333;
    margin-right: 20px;
    min-width: 70px;
    font-weight: 600;
    background-color: #f8f8f8;
    padding: 6px 12px;
    border-radius: 3px;
    border: 1px solid #e0e0e0;
    flex-shrink: 0;
    align-self: flex-start;
}

.category-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: flex-start;
    flex: 1;
    line-height: 1.5;
}

.category-link {
    display: inline-block;
    padding: 5px 10px;
    font-size: 13px;
    color: #666;
    text-decoration: none;
    border-radius: 2px;
    transition: all 0.3s ease;
    white-space: nowrap;
    border: 1px solid transparent;
    margin-bottom: 4px;
}

.category-link:hover {
    color: #4a9eff;
    background-color: rgba(74, 158, 255, 0.08);
    border-color: rgba(74, 158, 255, 0.2);
}

.category-link.active {
    color: #4a9eff;
    background-color: rgba(74, 158, 255, 0.1);
    border-color: rgba(74, 158, 255, 0.3);
    font-weight: 500;
}

/* 模型分类样式 */
.model-section .category-label {
    background-color: #fff2e6;
    border-color: #ff8c00;
    color: #d2691e;
}

/* 软件分类样式 */
.software-section {
    border-top: 1px solid #f0f0f0;
    padding-top: 12px;
    margin-top: 8px;
}

.software-section .category-label {
    background-color: #e8f4fd;
    border-color: #4a9eff;
    color: #2c5aa0;
}

.software-link {
    color: #555;
    font-weight: normal;
}

.software-link:hover {
    color: #4a9eff;
    background-color: rgba(74, 158, 255, 0.08);
}

/* 图纸类型样式 */
.type-section {
    border-top: 1px solid #f0f0f0;
    padding-top: 12px;
    margin-top: 8px;
}

.type-section .category-label {
    background-color: #f0f9ff;
    border-color: #38bdf8;
    color: #0369a1;
}

.type-link {
    color: #555;
    font-weight: normal;
}

.type-link:hover {
    color: #4a9eff;
    background-color: rgba(74, 158, 255, 0.08);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-container {
        padding: 0 15px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .search-section {
        max-width: 200px;
        margin: 0 15px;
    }
    
    .user-actions {
        gap: 8px;
    }
    
    .publish-btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    /* 分类导航响应式 */
    .category-container {
        padding: 12px 15px;
    }
    
    .category-row {
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 15px;
    }
    
    .category-label {
        margin-bottom: 8px;
        margin-right: 0;
        min-width: auto;
        display: inline-block;
    }
    
    .category-group {
        gap: 6px;
    }
    
    .category-link {
        padding: 5px 10px;
        font-size: 12px;
    }
}

/* 模型推荐模块 */
.model-recommendation {
    margin-top: 20px;
    padding: 20px 0;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* 模块标题区域 */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

.section-title {
    display: flex;
    align-items: center;
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin: 0;
}

.section-title i {
    color: #4a9eff;
    margin-right: 8px;
    font-size: 16px;
}

.section-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

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

.action-link:hover {
    color: #4a9eff;
}

.action-link:first-child {
    color: #ff4757;
}

.action-link:first-child:hover {
    color: #ff3742;
}

/* 模型网格布局 */
.model-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    justify-content: center;
    max-width: 1400px;
    margin: 0 auto;
}

/* 模型卡片 */
.model-card {
    background: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    cursor: pointer;
    width: 100%;
    max-width: 280px;
}

.model-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* 模型图片区域 */
.model-image {
    position: relative;
    width: 100%;
    height: 190px;
    overflow: hidden;
}

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

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

/* 模型覆盖层 */
.model-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(transparent 60%, rgba(0, 0, 0, 0.7));
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

/* 模型统计信息 */
.model-stats {
    position: absolute;
    bottom: 10px;
    left: 10px;
    display: flex;
    gap: 15px;
}

.model-stats span {
    color: #ffffff;
    font-size: 12px;
    display: flex;
    align-items: center;
}

.model-stats span:before {
    margin-right: 4px;
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
}

.views:before {
    content: "\f06e";
}

.likes:before {
    content: "\f004";
}

.comments:before {
    content: "\f075";
}

/* 下载按钮 */
.download-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(74, 158, 255, 0.9);
    color: #ffffff !important;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(74, 158, 255, 0.4);
    text-decoration: none;
    z-index: 10;
}

.download-btn i {
    font-size: 11px;
    color: #ffffff;
}

.model-card:hover .download-btn {
    opacity: 1;
    pointer-events: auto;
}

.download-btn:hover {
    background: rgba(74, 158, 255, 1) !important;
    color: #ffffff !important;
    transform: translate(-50%, -50%) scale(1.05);
    box-shadow: 0 6px 20px rgba(74, 158, 255, 0.6);
    text-decoration: none;
}

/* 模型信息区域 */
.model-info {
    padding: 15px;
}

.model-title {
    font-size: 14px;
    font-weight: 500;
    color: #333;
    margin: 0 0 10px 0;
    line-height: 1.4;
    height: 40px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.model-info a {
    text-decoration: none;
    color: inherit;
}

.model-info a:hover .model-title {
    color: #4a9eff;
}

/* 模型元信息 */
.model-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.author {
    font-size: 12px;
    color: #666;
}

.avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    overflow: hidden;
}

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

/* 模型详细信息 */
.model-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    color: #999;
    margin-bottom: 8px;
}

.software {
    color: #4a9eff;
    font-weight: 500;
}

/* 模型播放量 - 始终显示 */
.model-views-visible {
    display: flex;
    align-items: center;
    font-size: 11px;
    color: #666;
    padding-top: 8px;
    border-top: 1px solid #f0f0f0;
}

.model-views-visible .views {
    display: flex;
    align-items: center;
    gap: 4px;
}

.model-views-visible .views:before {
    content: "\f06e";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    color: #999;
    font-size: 10px;
}

/* 响应式设计 */
@media (max-width: 1450px) {
    .model-grid {
        grid-template-columns: repeat(4, 1fr);
        max-width: 1120px;
    }
}

@media (max-width: 1200px) {
    .model-grid {
        grid-template-columns: repeat(4, 1fr);
        max-width: 1000px;
    }
    
    .model-card {
        max-width: 250px;
    }
    
    .model-image {
        height: 175px;
    }
}

@media (max-width: 992px) {
    .model-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
        max-width: 750px;
    }
    
    .model-card {
        max-width: 230px;
    }
    
    .model-image {
        height: 161px;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

@media (max-width: 768px) {
    .model-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        max-width: 500px;
    }
    
    .model-card {
        max-width: 200px;
    }
    
    .model-image {
        height: 140px;
    }
    
    .container {
        padding: 15px;
    }
    
    .model-info {
        padding: 12px;
    }
    
    .section-actions {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .model-grid {
        grid-template-columns: 1fr;
        max-width: 300px;
    }
    
    .model-card {
        max-width: 300px;
    }
    
    .model-image {
        height: 180px;
    }
}

/* 页面底部 */
.footer {
    background-color: #404040;
    color: #c0c0c0;
    margin-top: 40px;
    font-size: 12px;
    line-height: 1.6;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 30px;
    padding: 30px 20px;
}

.footer-column {
    min-height: 150px;
}

.column-title {
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 15px 0;
    padding-bottom: 8px;
    border-bottom: 1px solid #666;
}

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

.footer-links li {
    margin-bottom: 8px;
    color: #c0c0c0;
    font-size: 12px;
    line-height: 1.5;
}

.footer-links a {
    color: #c0c0c0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #4a9eff;
}

.info-label {
    color: #999;
    font-size: 11px;
}

/* 二维码样式 */
.qr-code {
    text-align: center;
    margin-top: 10px;
}

.qr-image {
    width: 80px;
    height: 80px;
    border: 1px solid #666;
    border-radius: 4px;
    background-color: #fff;
}

/* 版权底部 */
.footer-bottom {
    background-color: #333333;
    padding: 15px 20px;
    border-top: 1px solid #555;
}

.copyright {
    text-align: center;
    margin: 0;
    color: #999;
    font-size: 11px;
    line-height: 1.4;
}

.security-info {
    margin-left: 20px;
    color: #888;
}

/* 底部响应式设计 */
@media (max-width: 1200px) {
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 25px 15px;
    }
    
    .column-title {
        font-size: 13px;
    }
    
    .footer-links li {
        font-size: 11px;
    }
    
    .security-info {
        display: block;
        margin-left: 0;
        margin-top: 5px;
    }
}

@media (max-width: 480px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 20px 15px;
    }
    
    .footer-column {
        min-height: auto;
    }
    
    .qr-image {
        width: 60px;
        height: 60px;
    }
    
    .copyright {
        font-size: 10px;
        text-align: left;
    }
}