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

:root {
    --primary-color: #FF3366;
    --primary-dark: #E62958;
    --primary-light: #FF6699;
    --secondary-color: #FF6B35;
    --accent-color: #FFD700;
    --bg-dark: #0D0D0D;
    --bg-gray: #1A1A1A;
    --bg-card: #242424;
    --text-primary: #FFFFFF;
    --text-secondary: #AAAAAA;
    --text-muted: #666666;
    --border-color: #333333;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 13, 13, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.logo-text {
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.navbar-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.navbar-menu .download-link {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.navbar-menu .download-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 51, 102, 0.4);
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.navbar-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
}

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding-top: 80px;
    background: linear-gradient(180deg, var(--bg-dark) 0%, #1a1a2e 50%, var(--bg-dark) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255, 51, 102, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(255, 107, 53, 0.1) 0%, transparent 40%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
    width: 100%;
}

.hero-text h1 {
    font-size: 56px;
    font-weight: bold;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 24px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.version-info {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
}

.version-info span {
    font-size: 16px;
    color: var(--text-muted);
    background: var(--bg-card);
    padding: 10px 20px;
    border-radius: 10px;
    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: bold;
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 5px 25px rgba(255, 51, 102, 0.3);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 35px rgba(255, 51, 102, 0.5);
}

.hero-image {
    display: flex;
    justify-content: center;
}

.app-showcase {
    width: 300px;
    height: 600px;
    border-radius: 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 20px 60px rgba(255, 51, 102, 0.3);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    animation: bounce 2s infinite;
}

.scroll-indicator .arrow {
    width: 20px;
    height: 30px;
    border: 2px solid var(--text-muted);
    border-radius: 10px;
    position: relative;
}

.scroll-indicator .arrow::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: scroll 1.5s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

@keyframes scroll {
    0% { top: 8px; opacity: 1; }
    100% { top: 18px; opacity: 0; }
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 40px;
    font-weight: bold;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
}

.features {
    padding: 100px 0;
    background: var(--bg-dark);
}

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

.feature-card {
    background: var(--bg-card);
    border-radius: 20px;
    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);
    box-shadow: 0 15px 40px rgba(255, 51, 102, 0.15);
}

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

.feature-card h3 {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 15px;
}

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

.advantages {
    padding: 100px 0;
    background: var(--bg-gray);
}

.advantages-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.advantage-item {
    display: flex;
    gap: 30px;
    align-items: center;
    background: var(--bg-card);
    padding: 30px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    border-color: var(--primary-color);
    transform: translateX(10px);
}

.advantage-number {
    font-size: 48px;
    font-weight: bold;
    color: var(--primary-color);
    opacity: 0.3;
    min-width: 80px;
}

.advantage-content h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
}

.advantage-content p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.reviews {
    padding: 100px 0;
    background: var(--bg-dark);
}

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

.review-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 35px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

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

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

.reviewer-name {
    font-size: 16px;
    font-weight: bold;
    display: block;
}

.reviewer-rating {
    font-size: 14px;
    color: var(--accent-color);
}

.review-content {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.review-date {
    font-size: 13px;
    color: var(--text-muted);
}

.review-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: var(--bg-card);
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.stat-value {
    font-size: 36px;
    font-weight: bold;
    display: block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

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

.download {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    text-align: center;
}

.download-content h2 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 15px;
}

.download-content p {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.download-info span {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.15);
    padding: 10px 20px;
    border-radius: 20px;
}

.download-main-btn {
    display: inline-block;
    background: white;
    color: var(--primary-color);
    font-size: 24px;
    font-weight: bold;
    padding: 20px 60px;
    border-radius: 40px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.download-main-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.4);
}

.download-tip {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 20px;
}

.footer {
    padding: 60px 0;
    background: var(--bg-dark);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo-img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.footer-logo span {
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

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

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

.footer-copy {
    font-size: 13px;
    color: var(--text-muted);
}

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .review-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .version-info {
        justify-content: center;
    }
    
    .hero-text h1 {
        font-size: 48px;
    }
    
    .app-showcase {
        width: 250px;
        height: 500px;
    }
}

@media (max-width: 768px) {
    .navbar-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
    }
    
    .navbar-menu.active {
        display: flex;
    }
    
    .navbar-toggle {
        display: flex;
    }
    
    .hero-text h1 {
        font-size: 36px;
    }
    
    .hero-text p {
        font-size: 18px;
    }
    
    .section-header h2 {
        font-size: 32px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .review-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantage-item {
        flex-direction: column;
        text-align: center;
    }
    
    .advantage-number {
        min-width: auto;
    }
    
    .download-content h2 {
        font-size: 36px;
    }
    
    .download-main-btn {
        font-size: 20px;
        padding: 15px 40px;
    }
    
    .navbar-menu .download-link {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 28px;
    }
    
    .hero-text p {
        font-size: 16px;
    }
    
    .version-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .download-btn {
        font-size: 16px;
        padding: 12px 30px;
    }
    
    .app-showcase {
        width: 200px;
        height: 400px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .review-stats {
        grid-template-columns: 1fr;
    }
    
    .download-content h2 {
        font-size: 28px;
    }
    
    .download-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .footer-links {
        gap: 15px;
    }
}

section.animate-out {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

section.animate-in {
    opacity: 1;
    transform: translateY(0);
}