/* 颜色变量和基础样式 */
:root {
    --primary-color: #2962ff;
    --primary-dark: #0039cb;
    --primary-light: #768fff;
    --accent-color: #ff4081;
    --accent-dark: #c60055;
    --accent-light: #ff79b0;
    --success-color: #00c853;
    --warning-color: #ffd600;
    --error-color: #ff1744;
    --text-primary: #2c3e50;
    --text-secondary: #546e7a;
    --background: #f5f7fa;
    --card-bg: #ffffff;
    --border-color: #e0e6ed;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

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

html, body {
    width: 100%;
    overflow-x: hidden;
}

body {
    background: #f0f0f0;
    color: var(--text-primary);
    font-family: 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 容器样式优化 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
}

/* 头部样式优化 */
header {
    background: transparent;
    padding: 40px 0 20px;
    margin: -30px -30px 30px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

/* 优化标题样式 */
header h1 {
    color: var(--text-primary);
    font-size: 2.8em;
    font-weight: 800;
    margin-bottom: 35px;
    letter-spacing: 2px;
    position: relative;
    display: inline-block;
    padding: 0 20px;
}

/* 添加标题装饰 */
header h1::before,
header h1::after {
    content: '';
    position: absolute;
    height: 4px;
    width: 40px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    top: 50%;
    transform: translateY(-50%);
}

header h1::before {
    left: -30px;
}

header h1::after {
    right: -30px;
}

/* 添加标题悬停效果 */
header h1:hover::before {
    width: 60px;
    left: -50px;
}

header h1:hover::after {
    width: 60px;
    right: -50px;
}

/* 添加标题动画 */
@keyframes titleGradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

header h1 {
    background: linear-gradient(
        90deg,
        var(--text-primary) 0%,
        var(--primary-color) 50%,
        var(--text-primary) 100%
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: titleGradient 6s ease infinite;
    transition: all 0.3s ease;
}

/* 搜索框样式优化 */
.search-box {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

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

.search-icon {
    position: absolute;
    left: 15px;
    color: var(--text-secondary);
    font-size: 1.2em;
    pointer-events: none; /* 防止图标影响输入 */
}

#searchInput {
    width: 100%;
    padding: 15px 20px 15px 45px;
    font-size: 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    transition: all 0.3s ease;
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(41, 98, 255, 0.1);
}

/* 搜索建议样式优化 */
.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    margin-top: 5px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    max-height: 80vh; /* 增加最大高度 */
    overflow-y: auto;
}

/* 搜索建议项样式优化 */
.suggestion-item {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    background: white;
}

.suggestion-name {
    font-size: 1.1em;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.suggestion-description {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin: 8px 0;
    line-height: 1.5;
    white-space: normal; /* 允许文本换行 */
}

.suggestion-category {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
    font-size: 0.9em;
    color: var(--primary-color);
}

.suggestion-version {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-top: 6px;
    padding: 4px 8px;
    background: var(--background);
    border-radius: 4px;
    display: inline-block;
}

/* 搜索建议容器在活动状态下的样式 */
.search-suggestions.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    padding: 8px 0;
}

/* 美化滚动条 */
.search-suggestions::-webkit-scrollbar {
    width: 8px;
}

.search-suggestions::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.search-suggestions::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

.search-suggestions::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* 主分类样式优化 - 横向按钮布局 */
#mainCategories {
    background: linear-gradient(135deg, #6366f1, #8b5cf6, #a855f7);
    padding: 30px 20px;
    margin: 0 -20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    min-height: 120px;
    width: calc(100% + 40px);
}

.main-category {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 15px 25px;
    border-radius: 12px;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    width: 160px;
    min-height: 60px;
    justify-content: center;
    white-space: nowrap;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.main-category:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.main-category-icon {
    font-size: 1.5em;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.main-category-title {
    font-size: 1.1em;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.main-category-desc {
    display: none;
}

/* 教程切换按钮样式 */
.tutorial-tabs {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 10px 0;
}

.tutorial-tab {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1em;
    font-weight: 500;
    min-width: 120px;
}

.tutorial-tab:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tutorial-tab.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-lg);
}

/* 教程详情页面样式 */
.tutorial-detail {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

.tutorial-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.tutorial-header h2 {
    color: var(--primary-color);
    font-size: 2.2em;
    margin: 20px 0 15px;
    font-weight: 700;
}

.tutorial-description {
    font-size: 1.1em;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.tutorial-steps {
    margin: 40px 0;
}

.tutorial-step {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    padding: 30px;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.tutorial-step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    font-weight: bold;
    box-shadow: var(--shadow-md);
}

.step-content {
    flex: 1;
}

.step-content h3 {
    color: var(--text-primary);
    font-size: 1.4em;
    margin: 0 0 15px;
    font-weight: 600;
}

.step-image {
    margin: 20px 0;
    text-align: center;
}

.step-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
}

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

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 15px 0 0;
    font-size: 1em;
}

.tutorial-tags {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 40px 0;
    flex-wrap: wrap;
}

.tutorial-tag {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .tutorial-step {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }
    
    .step-number {
        align-self: center;
    }
    
    .tutorial-header {
        padding: 20px;
    }
    
    .tutorial-header h2 {
        font-size: 1.8em;
    }
    
    .tutorial-tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .tutorial-tab {
        width: 200px;
    }
}

/* 子分类样式 */
#subCategories {
    margin: 0 -20px 30px -20px;
    padding: 30px 20px;
    border-top: 1px solid var(--border-color);
    width: calc(100% + 40px);
}

.sub-category-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
    padding: 15px;
    max-width: 1200px;
    margin: 0 auto;
}

.category {
    background: var(--card-bg);
    padding: 15px 20px;
    font-size: 0.95em;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.category-icon {
    font-size: 1.2em;
    opacity: 0.8;
}

.category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.category:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.category:hover::before {
    opacity: 1;
}

/* 软件列表样式优化 */
.software-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    padding: 20px;
    margin: 0 auto;
    max-width: 1400px;
}

.software-item {
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.software-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.software-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.software-title {
    flex: 1;
}

.software-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.software-tag {
    background: var(--primary-light);
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.85em;
}

/* 版本徽章样式优化 */
.version-badge {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-lg);
    font-size: 0.9em;
    font-weight: 500;
    display: inline-block;
    box-shadow: var(--shadow-sm);
}

/* 返回按钮样式 */
.back-button {
    background: linear-gradient(135deg, var(--text-secondary), var(--primary-color));
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.95em;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.back-button:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.back-button::before {
    content: '←';
    font-size: 1.1em;
}

/* 下载按钮样式优化 */
.download-link {
    background: linear-gradient(135deg, var(--success-color), var(--primary-color));
    color: white;
    padding: 15px 30px;
    border-radius: var(--radius-lg);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.download-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
}

.download-link:hover::before {
    left: 100%;
}

.download-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 动画效果 */
@keyframes shine {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 搜索结果样式优化 */
.search-results {
    padding: 20px;
}

.search-results h2 {
    color: var(--text-primary);
    margin-bottom: 30px;
    font-size: 2em;
    display: flex;
    align-items: center;
    gap: 15px;
}

.result-count {
    font-size: 0.6em;
    background: var(--primary-light);
    color: white;
    padding: 5px 15px;
    border-radius: var(--radius-lg);
}

/* 版本块样式优化 */
.version-block {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--radius-md);
    margin-bottom: 25px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.version-block:hover {
    box-shadow: var(--shadow-md);
}

.version-title {
    color: var(--primary-color);
    font-size: 1.3em;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-light);
    display: flex;
    align-items: center;
    gap: 10px;
}
/* 响应式优化 */
@media (max-width: 1024px) {
	.software-list{
		max-width:948px;
	}
}
/* 响应式优化 */
@media (max-width: 768px) {
    /* 调整头部间距 */
    header {
        padding: 20px 0 0px; /* 减小头部内边距 */
    }
	#content {
	    padding: 10px !important;
	}

    /* 调整搜索框间距 */
    .search-box {
        padding: 0 10px;
        margin-bottom: 15px; /* 减小与分类的间距 */
    }

    /* 调整分类导航间距 */
    #mainCategories {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px; /* 减小分类之间的间距 */
        padding: 8px;
        margin: 10px 0; /* 减小上下间距 */
    }

    /* 调整分类按钮内部间距 */
    .category {
        padding: 10px 12px;
        font-size: 0.9em;
    }

    /* 调整分类图标大小 */
    .category-icon {
        font-size: 1.1em;
    }

    /* 子分类手机端双排布局 */
    .sub-category-group {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        padding: 15px 10px;
    }

    .category {
        padding: 8px 10px;
        font-size: 0.85em;
        min-height: 32px;
        flex-direction: row;
        gap: 8px;
        justify-content: center;
    }

    .category-icon {
        font-size: 1.2em;
    }

    /* 调整标题大小和间距 */
    header h1 {
        font-size: 1.8em;
        margin-bottom: 20px;
    }

    /* 调整容器内边距 */
    .container {
        padding: 15px;
    }

    .software-list {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 10px;
    }

    .version-block {
        padding: 20px;
    }

    .download-links {
        grid-template-columns: 1fr;
    }

    /* 修改分类导航在移动端的显示 */
    #mainCategories {
        grid-template-columns: repeat(2, 1fr); /* 改为双排显示 */
        gap: 12px;
        padding: 10px;
        margin: 20px 0;
    }

    .category {
        padding: 12px 15px;
        font-size: 0.9em;
    }

    /* 优化搜索框在移动端的显示 */
    .search-box {
        padding: 0 10px;
    }

    #searchInput {
        padding: 12px 15px 12px 40px; /* 调整内边距 */
        font-size: 15px;
    }

    .search-icon {
        left: 12px;
        font-size: 1.1em;
    }

    /* 调整标题在移动端的大小 */
    header h1 {
        font-size: 1.8em;
        margin-bottom: 25px;
    }

    /* 调整搜索建议在移动端的显示 */
    .search-suggestions {
        margin-top: 5px;
    }

    .suggestion-item {
        padding: 10px 15px;
    }
}

/* 超小屏幕的进一步优化 */
@media (max-width: 360px) {
    header {
        padding: 15px 0 25px;
    }

    #mainCategories {
        gap: 6px;
        padding: 6px;
        margin: 8px 0;
    }

    .category {
        padding: 8px 10px;
        font-size: 0.85em;
    }

    .category-icon {
        font-size: 1em;
    }

    .container {
        padding: 10px;
    }

    #searchInput {
        padding: 10px 15px 10px 35px;
        font-size: 14px;
    }

    .search-icon {
        left: 10px;
        font-size: 1em;
    }
}

/* 软件图标样式 */
.software-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 10px;
}

/* 返回按钮 */
.back-button {
    background: linear-gradient(135deg, #1e88e5, #1565c0);
    color: white;
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: 500;
    letter-spacing: 0.5px;
    cursor: pointer;
    margin-bottom: 20px;
}

.back-button:hover {
    background: linear-gradient(135deg, #1565c0, #0d47a1);
}

/* 版本列表 */
.version-list {
    margin: 10px 0;
    padding: 10px;
    background: var(--background);
    border-radius: var(--radius-sm);
}

.version-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.version-item:last-child {
    border-bottom: none;
}

.version-item .version-badge {
    background: var(--primary-color);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.9em;
}

.version-item .version-date,
.version-item .version-size {
    color: var(--text-secondary);
    font-size: 0.9em;
}

/* 页面切换动画 */
#content {
    position: relative;
    z-index: 2;
    background-color: var(--background);
    margin-top: 0;
    padding: 20px;
    min-height: auto;
    transition: all 0.3s ease;
}

/* 当显示软件列表或详情时的样式 */
#content.active {
    min-height: 100vh;
    margin-top: -30px;
    background-color: var(--background);
    box-shadow: var(--shadow-sm);
}

/* 软件详情页样式 */
.software-detail {
    max-width: 800px;
    margin: 0 auto;
}

.detail-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

.software-description {
    color: #666;
    margin: 20px 0;
    line-height: 1.6;
}

.versions-section,
.download-section {
    margin: 30px 0;
}

/* 页面切换动画 */
#mainCategories,
#content {
    transition: opacity 0.3s ease;
}

/* 搜索框始终显示 */
.search-box {
    position: relative;
    z-index: 3;
}

/* 返回按钮样式优化 */
.back-button:hover {
    background: linear-gradient(135deg, #1565c0, #0d47a1);
}

/* 软件列表项悬停效果 */
.software-item {
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.software-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 版本列表样式优化 */
.version-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
}

.version-item {
    text-align: center;
    background-color: #f0f0f0;
    padding: 10px;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.version-item:hover {
    background-color: #e0e0e0;
}

/* 下载链接样式优化 */
.download-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.download-link {
    text-align: center;
    padding: 15px 20px;
}

/* 响应式布局优化 */
@media (max-width: 768px) {
    .category-page,
    .software-detail {
        padding: 0px;
    }
    
    .download-links {
        grid-template-columns: 1fr;
    }
    
    .version-list {
        grid-template-columns: 1fr;
    }
}

/* 版本块样式 */
.version-block {
    background: white;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 25px;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(0,0,0,0.05);
}

.version-title {
    color: var(--primary-color);
    font-size: 1.3em;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-light);
}

/* 软件图标样式优化 */
.software-detail-icon {
    width: 128px;
    height: 128px;
    margin: 20px 0;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 下载链接样式优化 */
.download-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.download-link {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    background-color: #4CAF50;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.download-link:hover {
    background-color: #45a049;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* 响应式调整 */
@media (max-width: 768px) {
    /* 主分类手机端双排布局 */
    #mainCategories {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        padding: 15px 20px;
        margin: 0;
        width: 100%;
        justify-items: center;
    }
    
    .main-category {
          width: 140px;
          min-height: 60px;
          padding: 10px 12px;
          flex-direction: row;
          text-align: center;
          gap: 8px;
          justify-content: center;
          align-items: center;
      }
    
    .main-category-icon {
        font-size: 2em;
    }
    
    .main-category-title {
        font-size: 1em;
        font-weight: 600;
    }
    
    .main-category-desc {
          display: none;
      }
     
     /* 子分类手机端双排布局 */
     .sub-category-group {
         grid-template-columns: repeat(2, 1fr);
         gap: 10px;
         padding: 15px 10px;
     }
     
     .category {
           padding: 8px 10px;
           font-size: 0.85em;
           min-height: 32px;
           flex-direction: row;
           gap: 8px;
           justify-content: center;
       }
     
     .category-icon {
         font-size: 1.2em;
     }
     
     .download-links {
         grid-template-columns: 1fr;
     }
    
    .version-block {
        padding: 20px;
    }
}

/* 动画效果优化 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.software-item, .version-block {
    animation: fadeInUp 0.5s ease forwards;
}

/* 添加底部样式 */
.footer {
    background: var(--card-bg);
    padding: 10px 0;
    border-top: 1px solid var(--border-color);
}

.disclaimer {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    color: var(--text-secondary);
}

.disclaimer h3 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-size: 1.5em;
}

.disclaimer p {
    margin: 10px 0;
    line-height: 1.6;
    font-size: 0.95em;
}

/* 修改内容区域样式 */
main {
    position: relative;
    width: 100%;
    transition: all 0.3s ease;
    display: none; /* 默认隐藏 */
}

/* 当有内容时显示 main */
main.active {
    display: block;
}

/* 版本信息样式 */
.version-info {
    display: flex;
    gap: 15px;
    color: var(--text-secondary);
    font-size: 0.9em;
    margin: 10px 0;
}

.version-date,
.version-size {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 下载代码样式 */
.download-code {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-left: 5px;
}

/* 分类标签样式 */
.category-badge {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85em;
}

/* 下载图标样式 */
.download-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* 底部返回按钮容器 */
.bottom-back {
    text-align: center;
    margin-top: 30px;
    padding: 20px 0;
}

/* 返回按钮样式优化 */
.back-button {
    background: linear-gradient(135deg, #1e88e5, #1565c0);
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 30px;
    font-weight: 500;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.back-button:hover {
    background: linear-gradient(135deg, #1565c0, #0d47a1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.back-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 下载教程特殊样式 */
.tutorial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    padding: 20px;
    margin: 0 auto;
    max-width: 1400px;
}

.tutorial-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.tutorial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.tutorial-number {
    position: absolute;
    top: 15px;
    left: 15px;
    width: 30px;
    height: 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.tutorial-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--background);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.tutorial-content {
    padding: 20px;
}

.tutorial-content h3 {
    color: var(--text-primary);
    font-size: 1.2em;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
}

.tutorial-content p {
    color: var(--text-secondary);
    font-size: 0.95em;
    line-height: 1.6;
    margin-bottom: 15px;
}

.tutorial-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tutorial-tag {
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8em;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .tutorial-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 15px;
    }
    
    .tutorial-card {
        margin: 0;
    }
    
    .tutorial-image {
        height: 180px;
    }
    
    .tutorial-content {
        padding: 15px;
    }
    
    .tutorial-content h3 {
        font-size: 1.1em;
    }
}