/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏样式 - 第一个页面 */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

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

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

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: #2CA5E0;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 16px;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #2CA5E0;
}

/* 英雄区样式 - 第一个页面 */
.hero {
    padding: 120px 0 80px;
    background-color: #f8faff;
    position: relative;
    overflow: hidden;
    margin-top: 80px;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: #2c3e50;
}

.hero p {
    font-size: 20px;
    color: #64748b;
    margin-bottom: 32px;
    max-width: 500px;
}

.download-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #2CA5E0;
    color: white;
}

.btn-primary:hover {
    background-color: #1a91da;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(44, 165, 224, 0.3);
}

.btn-secondary {
    background-color: white;
    color: #2CA5E0;
    border: 2px solid #2CA5E0;
}

.btn-secondary:hover {
    background-color: #f8faff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(44, 165, 224, 0.2);
}

.hero-image {
    flex: 1;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 功能区样式 - 第一个页面 */
.features {
    padding: 80px 0;
}

.features h2 {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: #2c3e50;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.feature-card {
    background-color: white;
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #2c3e50;
}

.feature-card p {
    color: #64748b;
    font-size: 16px;
}

/* 下载区样式 - 第一个页面 */
.download {
    padding: 80px 0;
    background-color: #f8faff;
}

.download h2 {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: #2c3e50;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.download-card {
    background-color: white;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.download-icon {
    width: 80px;
    height: 80px;
    background-color: #2CA5E0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.download-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #2c3e50;
}

.download-card p {
    color: #64748b;
    margin-bottom: 24px;
}

.btn-download {
    background-color: #2CA5E0;
    color: white;
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-download:hover {
    background-color: #1a91da;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(44, 165, 224, 0.3);
}

/* 常见问题样式 - 第一个页面 */
.faq {
    padding: 80px 0;
}

.faq h2 {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: #2c3e50;
}

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

.faq-item {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e2e8f0;
}

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

.faq-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #2c3e50;
}

.faq-item p {
    color: #64748b;
    font-size: 16px;
}

/* 页脚样式 - 第一个页面 */
.footer {
    background-color: #2c3e50;
    color: white;
    padding: 60px 0;
}

.footer .container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer .logo-text {
    color: white;
}

.footer-links {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.footer-links a {
    text-decoration: none;
    color: #cbd5e1;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    color: #cbd5e1;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #2CA5E0;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #94a3b8;
}

/* 第二个页面样式 */
.second-style {
    font-family: 'Poppins', sans-serif;
    background-color: #fff;
}

/* 头部样式 - 第二个页面 */
.second-header {
    background-color: #2CA5E0;
    padding: 20px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

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

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

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.nav-link:hover {
    opacity: 0.8;
}

/* 英雄区样式 - 第二个页面 */
.second-hero {
    background-color: #2CA5E0;
    color: white;
    padding: 150px 0 80px;
    margin-top: 80px;
}

.second-hero .container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-text {
    flex: 1;
}

.second-hero h1 {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 400px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
}

.btn-hero {
    background-color: white;
    color: #2CA5E0;
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-hero:hover {
    background-color: #f0f9ff;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.second-hero .btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.second-hero .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.stats {
    display: flex;
    gap: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-text {
    font-size: 14px;
    opacity: 0.8;
}

.second-hero .hero-image {
    flex: 1;
}

.second-hero .hero-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* 功能亮点样式 - 第二个页面 */
.features-highlight {
    padding: 100px 0;
}

.features-highlight h2 {
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 80px;
    color: #2c3e50;
}

.features-highlight .features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

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

.feature-item .feature-icon {
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #2c3e50;
}

.feature-item p {
    color: #64748b;
    font-size: 15px;
}

/* 多平台支持样式 - 第二个页面 */
.platforms {
    background-color: #f8faff;
    padding: 100px 0;
}

.platforms h2 {
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    color: #2c3e50;
}

.section-description {
    text-align: center;
    font-size: 18px;
    color: #64748b;
    margin-bottom: 80px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.platform-item {
    text-align: center;
}

.platform-icon {
    margin-bottom: 20px;
}

.platform-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #2c3e50;
}

.platform-item p {
    color: #64748b;
    font-size: 15px;
}

/* 下载区域样式 - 第二个页面 */
.download-section {
    padding: 100px 0;
    background-color: white;
}

.download-section h2 {
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    color: #2c3e50;
}

.download-options {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-top: 60px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    color: white;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.android-btn {
    background-color: #3ddc84;
}

.ios-btn {
    background-color: #007aff;
}

.desktop-btn {
    background-color: #2CA5E0;
}

.btn-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.btn-label {
    font-size: 14px;
    opacity: 0.9;
}

.btn-title {
    font-size: 18px;
    font-weight: 700;
}

/* 安全部分样式 - 第二个页面 */
.security-section {
    padding: 100px 0;
    background-color: #f8faff;
}

.security-section .container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.security-image {
    flex: 1;
}

.security-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.security-content {
    flex: 1;
}

.security-content h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 24px;
    color: #2c3e50;
}

.security-content p {
    font-size: 18px;
    color: #64748b;
    margin-bottom: 32px;
}

.security-features {
    list-style: none;
}

.security-feature {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    color: #2c3e50;
    font-size: 18px;
    font-weight: 500;
}

/* 常见问题样式 - 第二个页面 */
.faq-section {
    padding: 100px 0;
    background-color: white;
}

.faq-section h2 {
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: #2c3e50;
}

.faq-section .faq-items {
    max-width: 800px;
    margin: 0 auto;
}

.faq-section .faq-item {
    background-color: #f8faff;
    padding: 24px 32px;
    margin-bottom: 20px;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.faq-section .faq-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.faq-section .faq-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #2c3e50;
}

.faq-section .faq-item p {
    color: #64748b;
    font-size: 16px;
}

/* 页脚样式 - 第二个页面 */
.second-style .footer {
    background-color: #2c3e50;
    padding: 80px 0 40px;
}

.second-style .footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 60px;
}

.second-style .footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.second-style .footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.second-style .footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.second-style .footer-links a:hover {
    color: white;
}

.second-style .footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.second-style .footer-bottom p {
    color: #94a3b8;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero .container,
    .second-hero .container,
    .security-section .container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    
    .hero-content,
    .hero-image,
    .hero-text,
    .security-image,
    .security-content {
        flex: 1;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-highlight .features-grid,
    .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .download-options {
        grid-template-columns: repeat(1, 1fr);
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 768px) {
    .navbar .container,
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    .nav-links,
    .nav-list {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    .hero h1,
    .second-hero h1,
    .features h2,
    .download h2,
    .faq h2,
    .features-highlight h2,
    .platforms h2,
    .download-section h2,
    .security-content h2,
    .faq-section h2 {
        font-size: 32px;
    }
    
    .hero p,
    .subtitle,
    .section-description {
        font-size: 16px;
    }
    
    .download-buttons,
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .footer-content,
    .second-style .footer-top {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    
    .footer-links,
    .second-style .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .features-grid,
    .features-highlight .features-grid,
    .platforms-grid {
        grid-template-columns: repeat(1, 1fr);
    }
    
    .download-btn {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }
    
    .btn-content {
        align-items: center;
    }
    
    .hero {
        padding-top: 100px;
    }
    
    .second-hero {
        padding-top: 120px;
    }
}