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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: #333;
    background-color: #f8f9fa;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 渐变背景和动画 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    opacity: 0.05;
    z-index: -1;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 头部导航 */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo svg {
    width: 48px;
    height: 48px;
}

.logo span {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #4facfe, #00f2fe);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: #4facfe;
}

.nav-link:hover::after {
    width: 100%;
}

/* 英雄区域 */
.hero-section {
    min-height: calc(100vh - 116px);
    display: flex;
    align-items: center;
    padding: 60px 0;
    position: relative;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    color: #1a1a1a;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-title span {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    align-items: center;
}

.download-btn {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    border: none;
    padding: 16px 36px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(79, 172, 254, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(79, 172, 254, 0.4);
}

.learn-more-btn {
    background: transparent;
    color: #4facfe;
    border: 2px solid #4facfe;
    padding: 14px 30px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.learn-more-btn:hover {
    background: rgba(79, 172, 254, 0.1);
}

.hero-image {
    flex: 1;
    position: relative;
}

.main-image {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.5s ease;
}

.hero-image:hover .main-image {
    transform: translateY(-5px);
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 60px;
}

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

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: #4facfe;
    margin-bottom: 8px;
}

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

/* 特点区域 */
.features-section {
    padding: 100px 0;
    background: white;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 80px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 20px;
}

.section-description {
    font-size: 18px;
    color: #666;
    line-height: 1.6;
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    background: #f8f9fa;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #4facfe, #00f2fe);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    border-radius: 20px;
    color: white;
    font-size: 32px;
}

.feature-title {
    font-size: 22px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.feature-description {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

/* 下载区域 */
.download-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    text-align: center;
}

.download-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.download-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.download-description {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.download-platforms {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.platform-btn {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 16px 30px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.platform-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
}

/* 页脚 */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 60px 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo svg {
    width: 40px;
    height: 40px;
}

.footer-logo span {
    font-size: 24px;
    font-weight: 700;
}

.footer-description {
    font-size: 14px;
    color: #999;
    margin-bottom: 20px;
    line-height: 1.6;
}

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

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    transform: translateY(-3px);
}

.footer-heading {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 14px;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    margin-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #999;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-container {
        gap: 40px;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .cta-buttons {
        flex-direction: column;
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .section-description {
        font-size: 16px;
    }
    
    .features-grid {
        gap: 30px;
    }
    
    .download-title {
        font-size: 32px;
    }
    
    .download-description {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 0 15px;
    }
    
    .logo svg {
        width: 40px;
        height: 40px;
    }
    
    .logo span {
        font-size: 24px;
    }
    
    .hero-section {
        padding: 40px 0;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
        margin-bottom: 30px;
    }
    
    .download-btn {
        padding: 14px 30px;
        font-size: 16px;
    }
    
    .learn-more-btn {
        padding: 12px 26px;
        font-size: 14px;
    }
    
    .hero-stats {
        gap: 20px;
        margin-top: 40px;
    }
    
    .stat-number {
        font-size: 24px;
    }
    
    .features-section {
        padding: 80px 0;
    }
    
    .section-header {
        margin-bottom: 60px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .download-section {
        padding: 80px 0;
    }
    
    .download-title {
        font-size: 28px;
    }
    
    .platform-btn {
        padding: 14px 26px;
        font-size: 16px;
    }
    
    .footer {
        padding: 40px 0;
    }
    
    .footer-container {
        gap: 30px;
    }
}