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

:root {
    --primary-color: #FF6B35;
    --primary-dark: #E55A2B;
    --secondary-color: #FF8C42;
    --accent-color: #FFD23F;
    --bg-dark: #1A1A2E;
    --bg-light: #16213E;
    --text-primary: #FFFFFF;
    --text-secondary: #B8B8D0;
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-light) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

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

.header {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.logo-text h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-text p {
    font-size: 12px;
    color: var(--text-secondary);
}

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

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.nav-download {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white !important;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.5);
}

.hero {
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(255, 107, 53, 0.2) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 140, 66, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-left h2 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 25px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-left p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 500px;
}

.version-info {
    display: flex;
    gap: 25px;
    margin-bottom: 35px;
}

.version-info span {
    font-size: 14px;
    color: var(--text-secondary);
    background: var(--card-bg);
    padding: 10px 20px;
    border-radius: 25px;
    border: 1px solid var(--border-color);
}

.download-btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-size: 18px;
    font-weight: 600;
    padding: 16px 45px;
    border-radius: 30px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(255, 107, 53, 0.6);
}

.hero-img {
    width: 100%;
    max-width: 400px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.3), rgba(255, 140, 66, 0.2));
    aspect-ratio: 9/16;
    margin: 0 auto;
    width:200px;
    height:200px;
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.intro {
    padding: 80px 0;
}

.intro-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.intro-content p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.features {
    padding: 80px 0;
    background: rgba(0, 0, 0, 0.1);
}

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

.feature-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    background: rgba(255, 107, 53, 0.1);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.reviews {
    padding: 80px 0;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.review-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 30px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.review-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.review-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    display: block;
}

.review-rating {
    font-size: 14px;
    color: var(--accent-color);
    margin-top: 5px;
}

.review-content {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.download-section {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.15), rgba(255, 140, 66, 0.1));
    border-radius: 30px;
    margin: 0 20px 80px;
}

.download-section h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.download-section p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 35px;
}

.footer {
    background: rgba(0, 0, 0, 0.3);
    padding: 30px 0;
    text-align: center;
}

.footer p {
    font-size: 14px;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav ul {
        gap: 15px;
    }
    
    .nav-download {
        padding: 6px 15px;
        font-size: 12px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-left h2 {
        font-size: 32px;
    }
    
    .hero-left p {
        font-size: 16px;
        margin: 0 auto 25px;
    }
    
    .version-info {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }
    
    .hero-img {
        max-width: 280px;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 35px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .download-section {
        margin: 0 10px 60px;
        padding: 60px 20px;
    }
    
    .download-section h2 {
        font-size: 24px;
    }
    
    .download-btn {
        padding: 14px 35px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .logo {
        width: 40px;
        height: 40px;
    }
    
    .logo-text h1 {
        font-size: 18px;
    }
    
    .nav ul {
        gap: 15px;
    }
    
    .nav a {
        font-size: 12px;
    }
    
    .hero-left h2 {
        font-size: 28px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .review-card {
        padding: 25px 20px;
    }
}