:root {
    --primary-color: #3a86ff;
    --secondary-color: #28a745;
    --dark-color: #343a40;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
}

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

body {
    font-family: 'Open Sans', 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #fff;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

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

/* Header Styles */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    font-weight: 600;
    color: var(--dark-color);
}

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

.language-switcher {
    margin-left: 20px;
    display: flex;
    align-items: center;
}

.language-switcher a {
    margin: 0 5px;
    font-size: 0.9rem;
}

.auth-buttons {
    display: flex;
    align-items: center;
}

.btn {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: 2px solid var(--primary-color);
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    margin-left: 10px;
}

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

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8eb 100%);
}

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

.hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--dark-color);
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--gray-color);
}

.cta-buttons {
    display: flex;
}

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

.hero-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: #fff;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.section-title p {
    color: var(--gray-color);
    max-width: 700px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--gray-color);
}

/* Demo Section */
.demo {
    padding: 80px 0;
    background-color: var(--light-color);
}

.video-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.video-container img {
    width: 100%;
    display: block;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    color: var(--primary-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.play-button:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Quick Start Section */
.quick-start {
    padding: 80px 0;
    background-color: #fff;
}

.installation-option {
    margin-bottom: 50px;
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.installation-option h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.installation-option p {
    margin-bottom: 15px;
    color: var(--gray-color);
}

.code-tabs {
    margin: 20px 0;
}

.tab-header {
    display: flex;
    border-bottom: 1px solid #ddd;
    margin-bottom: -1px;
}

.tab-button {
    padding: 10px 20px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    font-weight: 600;
    cursor: pointer;
    color: var(--gray-color);
    transition: all 0.3s ease;
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    padding: 20px 0;
}

.tab-content.active {
    display: block;
}

pre {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    margin: 15px 0;
}

code {
    font-family: 'Courier New', Courier, monospace;
    color: var(--dark-color);
}

/* Community Section */
.community {
    padding: 80px 0;
    background-color: var(--light-color);
    text-align: center;
}

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

.community p {
    color: var(--gray-color);
    max-width: 700px;
    margin: 0 auto 30px;
}

.qrcode-container {
    /* 保持原有样式，可以根据需要调整 max-width */
    margin: 15px; /* 调整外边距 */
    max-width: 250px; /* 可以调整宽度 */
    display: inline-block; /* 确保在 flex 布局中正确表现 */
    vertical-align: top; /* 顶部对齐 */
}

.qrcode-container img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 10px; /* 图片和文字间距 */
}

.qrcode-container p {
        color: var(--gray-color);
        font-size: 0.9rem;
}

/* 新增包裹层样式 */
.qrcodes-wrapper {
    display: flex; /* 使用 Flexbox 布局 */
    justify-content: center; /* 水平居中 */
    align-items: flex-start; /* 顶部对齐 */
    flex-wrap: wrap; /* 在小屏幕上换行 */
    gap: 30px; /* 设置元素之间的间距 */
    margin-top: 30px; /* 与上方标题的间距 */
}

.update-info {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    max-width: 700px;
    margin: 30px auto 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.update-info h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

/* Contribution Section */
.contribution {
    padding: 80px 0;
    background-color: #fff;
}

.contribution h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: var(--dark-color);
    text-align: center;
}

.contribution ol {
    max-width: 600px;
    margin: 0 auto;
    padding-left: 20px;
}

.contribution li {
    margin-bottom: 15px;
    color: var(--gray-color);
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 50px 0 20px;
}

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

.license {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.license img {
    margin-right: 15px;
}

.license span {
    color: #adb5bd;
}

.links {
    display: flex;
    margin-bottom: 30px;
}

.links a {
    color: #adb5bd;
    margin: 0 15px;
}

.links a:hover {
    color: white;
}

.copyright {
    color: #adb5bd;
    font-size: 0.9rem;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 40px;
    }
    
    .cta-buttons {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav-links {
        margin-top: 20px;
        flex-direction: column;
    }
    
    .nav-links li {
        margin: 10px 0 0;
    }
    
    .auth-buttons {
        margin-top: 20px;
        width: 100%;
        justify-content: center;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .section-title h2 {
        font-size: 1.8rem;
    }
}
@media (max-width: 600px) {
    .qrcodes-wrapper {
        flex-direction: column; /* 改为垂直排列 */
        align-items: center; /* 垂直居中 */
    }
    .qrcode-container {
            max-width: 80%; /* 调整宽度以适应垂直布局 */
    }
}

/* FAQ Section Styles */
.faq-section {
    padding: 80px 0;
    background-color: #fff; /* 或者 var(--light-color) */
}

#faq-container {
    margin-top: 30px;
    background-color: #fff; /* 可以给容器加个背景 */
    padding: 20px 30px; /* 内边距 */
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05); /* 轻微阴影 */
}

#faq-container h1 { /* Markdown 中的 H1 */
    font-size: 1.8rem;
    color: var(--dark-color);
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

#faq-container h2 { /* Markdown 中的 H2 */
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-top: 30px;
    margin-bottom: 15px;
}

#faq-container h3 { /* Markdown 中的 H3 */
        font-size: 1.2rem;
        color: var(--dark-color);
        margin-top: 25px;
        margin-bottom: 10px;
}

#faq-container p {
    margin-bottom: 15px;
    color: var(--gray-color);
    line-height: 1.7;
}

#faq-container ul, #faq-container ol {
    margin-left: 20px;
    margin-bottom: 15px;
    color: var(--gray-color);
}
    #faq-container li {
    margin-bottom: 8px;
    }

#faq-container code {
    background-color: #e9ecef; /* 代码片段背景色 */
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    color: #c7254e; /* 代码片段文字颜色 */
}

#faq-container pre {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 5px;
    padding: 15px;
    overflow-x: auto;
    margin-bottom: 15px;
}

#faq-container pre code {
    background-color: transparent;
    padding: 0;
    border-radius: 0;
    color: var(--dark-color); /* 代码块内文字颜色 */
}

#faq-container a {
    color: var(--primary-color);
    text-decoration: underline;
}
    #faq-container a:hover {
        color: var(--secondary-color);
}

.dev-plan-section {
    padding: 80px 0;
    background-color: var(--light-color); /* Slightly different background */
}

#dev-plan-container {
    margin-top: 30px;
    background-color: #fff;
    padding: 20px 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* Apply similar heading/paragraph styles as FAQ if needed */
#dev-plan-container h1 {
    font-size: 1.8rem; color: var(--dark-color); margin-bottom: 25px; padding-bottom: 10px; border-bottom: 1px solid #eee;
}
#dev-plan-container h2 {
    font-size: 1.4rem; color: var(--primary-color); margin-top: 30px; margin-bottom: 15px;
}
#dev-plan-container h3 {
        font-size: 1.2rem; color: var(--dark-color); margin-top: 25px; margin-bottom: 10px;
}
#dev-plan-container p {
    margin-bottom: 15px; color: var(--gray-color); line-height: 1.7;
}
#dev-plan-container ul, #dev-plan-container ol {
    margin-left: 20px; margin-bottom: 15px; color: var(--gray-color);
}
#dev-plan-container li {
    margin-bottom: 8px;
    }
#dev-plan-container code {
    background-color: #e9ecef; padding: 2px 6px; border-radius: 4px; font-family: monospace; color: #c7254e;
}
#dev-plan-container pre {
    background-color: #f8f9fa; border: 1px solid #e9ecef; border-radius: 5px; padding: 15px; overflow-x: auto; margin-bottom: 15px;
}
#dev-plan-container pre code {
    background-color: transparent; padding: 0; border-radius: 0; color: var(--dark-color);
}
#dev-plan-container a {
    color: var(--primary-color); text-decoration: underline;
}
#dev-plan-container a:hover {
        color: var(--secondary-color);
}