:root {
    --bg-color: #191919;
    --text-color: #e6e6e6;
    --primary-color: #7963d2;
    --secondary-color: #333333;
    --border-color: #333333;
    --card-bg: #242424;
    --header-bg: #191919;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

header {
    background-color: var(--header-bg);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo-container img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    object-fit: contain;
}

.logo-text {
    font-size: 20px;
    font-weight: bold;
    color: var(--text-color);
}

.search-container {
    display: flex;
    align-items: center;
    background-color: var(--secondary-color);
    border-radius: 6px;
    padding: 6px 12px;
    width: 200px;
}

.search-container input {
    background: none;
    border: none;
    color: var(--text-color);
    outline: none;
    width: 100%;
    font-size: 14px;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

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

.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px;
}

.hero-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 60px;
}

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

.hero-title {
    font-size: 64px;
    font-weight: bold;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 32px;
    margin-bottom: 24px;
    color: var(--text-color);
}

.hero-description {
    font-size: 18px;
    margin-bottom: 32px;
    max-width: 500px;
    line-height: 1.7;
}

.hero-image {
    width: 300px;
    height: 300px;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.cta-buttons {
    display: flex;
    gap: 16px;
    margin-top: 24px;
}

.cta-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 24px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.cta-secondary {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 24px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 24px;
    margin-top: 60px;
}

.feature-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 24px;
    transition: transform 0.2s;
}

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

.feature-title {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 16px;
}

.feature-description {
    font-size: 14px;
    line-height: 1.6;
    color: #aaaaaa;
}

.question-section {
    margin-top: 80px;
}

.question-title {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 24px;
}

.question-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 16px;
}

.question {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.answer {
    font-size: 16px;
    color: #aaaaaa;
}

footer {
    background-color: var(--header-bg);
    padding: 48px 24px;
    margin-top: 80px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 32px;
}

.footer-column h3 {
    font-size: 18px;
    margin-bottom: 16px;
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-column a {
    color: #aaaaaa;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

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

.copyright {
    text-align: center;
    margin-top: 48px;
    font-size: 14px;
    color: #666666;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .hero-section {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
        margin-bottom: 40px;
    }
    
    .hero-description {
        max-width: 100%;
    }
    
    .nav-links {
        display: none;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 48px;
    }
    
    .hero-subtitle {
        font-size: 24px;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 12px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

.features-detail {
    margin-top: 80px;
}

.features-title {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 24px;
}

.feature-detail-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 16px;
    transition: transform 0.2s;
}

.feature-detail-card:hover {
    transform: translateY(-3px);
}

.feature-detail-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

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

.app-screenshots {
    margin-top: 80px;
}

.screenshots-title {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 24px;
}

.screenshots-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 24px;
}

.screenshot-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 16px;
    transition: transform 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.screenshot-card:hover {
    transform: translateY(-5px);
}

.screenshot-img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    object-fit: contain;
    margin-bottom: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.screenshot-caption {
    font-size: 14px;
    color: #aaaaaa;
    text-align: center;
    margin: 8px 0 0;
}

@media (max-width: 768px) {
    .screenshots-container {
        grid-template-columns: 1fr;
    }
}