/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #ff4b6e;
    --secondary-color: #6c63ff;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

/* Header styles */
.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-img {
    height: 40px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

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

.nav-buttons {
    display: flex;
    gap: 1rem;
}

/* Button styles */
.btn {
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    border: none;
}

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

.btn-large {
    padding: 0.8rem 2rem;
    font-size: 1.1rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Hero section */
.hero {
    padding: 8rem 2rem 4rem;
    background: linear-gradient(135deg, #fff5f7 0%, #fff 100%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    min-height: 80vh;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    color: #666;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 2rem;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    font-size: 1rem;
    color: #666;
    margin-top: 0.5rem;
}

.hero-image {
    flex: 1;
    max-width: 500px;
    position: relative;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

/* Download section */
.download {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
}

.download-container {
    display: flex;
    align-items: center;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.download-content {
    flex: 1;
}

.download-info {
    margin-bottom: 2rem;
}

.download-info h3 {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

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

.version-features li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.1rem;
    color: #555;
}

.version-features i {
    color: var(--primary-color);
}

.download-buttons {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    color: var(--white);
    font-weight: 500;
    transition: all 0.3s;
    min-width: 200px;
}

.download-btn.android {
    background: #3DDC84;
}

.download-btn.ios {
    background: #000;
}

.download-btn i {
    font-size: 1.5rem;
}

.download-btn span {
    font-size: 1.1rem;
}

.download-btn small {
    font-size: 0.8rem;
    opacity: 0.8;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.download-image {
    flex: 1;
    max-width: 400px;
}

.download-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

/* Features section */
.features {
    padding: 4rem 2rem;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* About section */
.about {
    padding: 4rem 2rem;
    background: var(--light-gray);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.about-text {
    flex: 1;
}

.about-features {
    list-style: none;
    margin-top: 2rem;
}

.about-features li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.about-features i {
    color: var(--primary-color);
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
}

/* Footer styles */
.footer {
    background: #2c3e50;
    color: var(--white);
    padding: 4rem 2rem 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-section h3 {
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

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

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

.footer-bottom {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.beian {
    margin-top: 1rem;
}

.beian a {
    color: var(--white);
    text-decoration: none;
    margin: 0 1rem;
}

.beian img {
    height: 20px;
    vertical-align: middle;
    margin-right: 0.5rem;
}

.footer-links {
    margin-top: 1rem;
}

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

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

.footer-links .divider {
    color: rgba(255, 255, 255, 0.3);
    margin: 0 1rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 6rem;
        min-height: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .download-container {
        flex-direction: column;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .download-btn {
        width: 100%;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .about-content {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}