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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

#targetDiv {
    width: 100%;
    min-height: 100vh;
    background-color: #f8f9fa;
}

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

/* 头部导航 */
.header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo h1 {
    color: #2d8cff;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -1px;
}

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

.nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav a:hover {
    color: #2d8cff;
}

.nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: #2d8cff;
    transition: width 0.3s ease;
}

.nav a:hover::after {
    width: 100%;
}

.header-actions .downlbtnvmmn {
    background-color: #2d8cff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.header-actions .downlbtnvmmn:hover {
    background-color: #1a73e8;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(45, 140, 255, 0.3);
}

/* 按钮样式 */
.downlbtnvmmn {
    background-color: #2d8cff;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.downlbtnvmmn:hover {
    background-color: #1a73e8;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(45, 140, 255, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: #2d8cff;
    border: 2px solid #2d8cff;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-secondary:hover {
    background-color: #2d8cff;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(45, 140, 255, 0.3);
}

/* 首屏 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 150px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 20px;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 产品分类版块 */
.product-categories {
    padding: 100px 0;
    background-color: white;
}

.product-categories h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
    color: #333;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.category-card {
    background-color: #f8f9fa;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: #2d8cff;
}

.category-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.category-card p {
    color: #666;
    font-size: 16px;
}

/* 版本更新板块 */
.updates {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.updates h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
    color: #333;
}

.updates-list {
    max-width: 900px;
    margin: 0 auto;
}

.update-item {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.update-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.update-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #2d8cff;
}

.update-item ul {
    list-style: none;
    padding-left: 0;
}

.update-item li {
    padding-left: 25px;
    position: relative;
    margin-bottom: 10px;
    color: #666;
}

.update-item li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #4caf50;
    font-weight: bold;
}

/* 会员套餐板块 */
.pricing {
    padding: 100px 0;
    background-color: white;
}

.pricing h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
    color: #333;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background-color: #f8f9fa;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
}

.pricing-card.popular {
    background-color: #2d8cff;
    color: white;
    transform: scale(1.05);
    border-color: #2d8cff;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.pricing-card.popular:hover {
    transform: translateY(-10px) scale(1.05);
}

.pricing-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
}

.pricing-card .price {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 30px;
}

.pricing-card .price span {
    font-size: 16px;
    font-weight: 400;
    opacity: 0.8;
}

.pricing-card ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: 40px;
}

.pricing-card li {
    padding: 10px 0;
    position: relative;
}

.pricing-card li::before {
    content: '✓';
    position: absolute;
    left: -25px;
    color: #4caf50;
    font-weight: bold;
}

.pricing-card.popular li::before {
    color: white;
}

.pricing-card .downlbtnvmmn {
    width: 100%;
}

.pricing-card.popular .downlbtnvmmn {
    background-color: white;
    color: #2d8cff;
}

.pricing-card.popular .downlbtnvmmn:hover {
    background-color: rgba(255, 255, 255, 0.9);
}

/* 常见问题板块 */
.faq-preview {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.faq-preview h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
    color: #333;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto 40px;
}

.faq-item {
    background-color: white;
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.faq-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.faq-item p {
    color: #666;
}

.faq-preview .btn-secondary {
    display: block;
    margin: 0 auto;
    width: fit-content;
}

/* 关于我们板块 */
.about {
    padding: 100px 0;
    background-color: white;
}

.about h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
    color: #333;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    margin-bottom: 20px;
    color: #666;
    font-size: 16px;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    text-align: center;
}

.stat-item {
    background-color: #f8f9fa;
    padding: 30px 20px;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: #2d8cff;
    margin-bottom: 10px;
}

.stat-label {
    color: #666;
    font-size: 14px;
}

/* 底部版权 */
.footer {
    background-color: #333;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #2d8cff;
}

.footer-info p {
    color: #ccc;
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

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

.footer-links li {
    margin-bottom: 15px;
}

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

.footer-links a:hover {
    color: #2d8cff;
}

.footer-contact h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

.footer-contact p {
    color: #ccc;
    margin-bottom: 15px;
    line-height: 1.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #555;
    color: #ccc;
    font-size: 14px;
}

/* 通用页面样式 */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 60px;
    text-align: center;
}

.page-header h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

.page-content {
    padding: 80px 0;
    background-color: white;
}

/* 下载页面 */
.download-section {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 60px 0;
}

.download-card {
    background-color: #f8f9fa;
    padding: 40px 30px;
    border-radius: 15px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.download-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: #2d8cff;
}

.download-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
}

.download-card p {
    color: #666;
    margin-bottom: 30px;
}

/* 常见问题页面 */
.faq-page .faq-list {
    max-width: 900px;
    margin: 60px auto;
}

.faq-page .faq-item {
    margin-bottom: 30px;
}

.faq-page .faq-item h3 {
    cursor: pointer;
    user-select: none;
}

/* 功能介绍页面 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin: 60px 0;
}

.feature-card {
    background-color: #f8f9fa;
    padding: 40px 30px;
    border-radius: 15px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: #2d8cff;
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #2d8cff;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
}

/* 使用教程页面 */
.tutorial-steps {
    max-width: 800px;
    margin: 60px auto;
}

.tutorial-step {
    background-color: #f8f9fa;
    padding: 40px 30px;
    border-radius: 15px;
    margin-bottom: 30px;
    transition: all 0.3s ease;
    position: relative;
    padding-left: 80px;
}

.tutorial-step:hover {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.tutorial-step::before {
    content: counter(step);
    counter-increment: step;
    position: absolute;
    left: 30px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background-color: #2d8cff;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
}

.tutorial-step h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.tutorial-step p {
    color: #666;
    line-height: 1.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .hero h2 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .pricing-card.popular {
        transform: none;
    }
    
    .pricing-card:hover,
    .pricing-card.popular:hover {
        transform: translateY(-10px);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}