/* 基础样式 */
:root {
    --primary-color: #07C160; /* 微信绿色 */
    --secondary-color: #2B313E;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

.logo img {
    margin-right: 10px;
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    margin-right: 10px;
}

.btn.primary {
    background-color: var(--primary-color);
    color: white;
}

.btn.primary:hover {
    background-color: #06AD56;
}

.btn.secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn.secondary:hover {
    background-color: #1E232E;
}

/* 英雄区域 */
.hero {
    padding: 120px 0 60px;
    background-color: var(--light-gray);
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hero-text {
    flex: 1;
    padding-right: 40px;
}

.hero-text h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.hero-text p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #666;
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 功能区域 */
.features {
    padding: 80px 0;
    text-align: center;
}

.features h2 {
    font-size: 2rem;
    margin-bottom: 50px;
    color: var(--secondary-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 30px 20px;
    border-radius: 8px;
    background-color: var(--white);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

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

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.3rem;
}

/* 截图区域 */
.screenshots {
    padding: 80px 0;
    background-color: var(--light-gray);
    text-align: center;
}

.screenshots h2 {
    font-size: 2rem;
    margin-bottom: 50px;
    color: var(--secondary-color);
}

.screenshot-slider {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding: 20px 0;
    scroll-snap-type: x mandatory;
}

.screenshot-slider img {
    scroll-snap-align: start;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    max-height: 500px;
}

/* 下载区域 */
.download {
    padding: 80px 0;
    text-align: center;
}

.download h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.download h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.download h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

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

.download p1 {
    margin-bottom: 30px;
    color: #666;
    text-align: left; /* 仅段落左对齐 */
    margin-left: auto; /* 与下一行配合实现居中容器内的左对齐 */
    margin-right: auto;
    padding: 0 20px; /* 添加内边距避免贴边 */
}

.download-buttons {
    margin-bottom: 40px;
}

.app-info {
    background-color: var(--light-gray);
    padding: 15px;
    border-radius: 5px;
    display: inline-block;
    text-align: left;
    font-family: monospace;
}

/* 原理区域 */
.principle {
    padding: 80px 0;
    background-color: var(--light-gray);
    text-align: center;
}

.principle h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.principle h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.principle h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.principle p {
    margin-bottom: 30px;
    color: #666;
    text-align: left; /* 仅段落左对齐 */
    margin-left: auto; /* 与下一行配合实现居中容器内的左对齐 */
    margin-right: auto;
    padding: 0 20px; /* 添加内边距避免贴边 */
}

/* 页脚 */
.footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 40px 0 20px;
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 0.8;
}

.copyright {
    margin-bottom: 20px;
    opacity: 0.8;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    color: var(--white);
    font-size: 1.5rem;
    transition: opacity 0.3s;
}

.social-links a:hover {
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero .container {
        flex-direction: column;
    }
    
    .hero-text {
        padding-right: 0;
        margin-bottom: 40px;
        text-align: center;
    }
    
    .cta-buttons {
        justify-content: center;
    }
}
/* 简化版联系我们页面样式 */
.contact-section {
    padding: 100px 0;
    text-align: center;
}

.contact-intro {
    margin-bottom: 30px;
    color: #666;
    font-size: 1.1rem;
}

.email-container {
    background-color: var(--white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    max-width: 500px;
    margin: 0 auto;
}

.email-container i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.email-container h2 {
    margin-bottom: 25px;
    word-break: break-all;
}

@media (max-width: 768px) {
    .email-container {
        padding: 30px 20px;
    }
}