:root {
    --primary-color: #FFB800;
    --primary-hover: #FFC933;
    --text-color: #333;
    --bg-color: #fff;
    --gray-bg: #FFFBF0;
}

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

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

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

/* Header & Navigation */
header {
    padding: 20px 0;
    background: var(--bg-color);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-menu {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.logo img {
    height: 40px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
    margin: 0;
    padding: 0;
}

.nav-links li {
    padding: 0;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    padding: 8px 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

/* Banner Section */
.banner {
    text-align: center;
    padding: 100px 0;
    background: linear-gradient(135deg, #FFFBF0 0%, #FFE4A3 100%);
}

.banner h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.banner p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #666;
}

.banner-buttons {
    margin-bottom: 40px;
}

.banner-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 50px;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-text {
    color: #666;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    padding: 12px 24px;
    background: var(--primary-color);
    color: #333;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 184, 0, 0.2);
}

.btn-secondary {
    display: inline-block;
    padding: 12px 24px;
    background: transparent;
    color: var(--text-color);
    text-decoration: none;
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    margin-left: 15px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: var(--bg-color);
}

.features h2 {
    text-align: center;
    margin-bottom: 50px;
}

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

.feature-item {
    text-align: center;
    padding: 30px;
    border-radius: 8px;
    transition: all 0.3s ease;
    background: white;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(255, 184, 0, 0.1);
    background: #FFFBF0;
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-item h3 {
    margin-bottom: 15px;
}

/* Pricing Section */
.pricing {
    padding: 80px 0;
    background: var(--gray-bg);
}

.section-desc {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.pricing-item {
    background: white;
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pricing-item:hover {
    transform: translateY(-5px);
}

.pricing-item.popular {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.popular-tag {
    position: absolute;
    top: -15px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.pricing-header {
    margin-bottom: 30px;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.price {
    margin: 25px 0;
}

.price .amount {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    line-height: 1;
}

.price .period {
    color: #666;
    font-size: 1.1rem;
}

.pricing-features {
    list-style: none;
    margin: 30px 0 0 0;
    padding: 0;
    text-align: left;
}

.pricing-features li {
    margin: 15px 0;
    color: #666;
    padding-left: 30px;
    position: relative;
}

.pricing-features li i {
    position: absolute;
    left: 0;
    top: 4px;
    color: var(--primary-color);
}

/* Download Section */
.download {
    padding: 80px 0;
    background: white;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.download-item {
    text-align: center;
    padding: 30px;
    border-radius: 8px;
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.download-item:hover {
    transform: translateY(-5px);
}

.download-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* FAQ Section */
.faq {
    padding: 80px 0;
    background: var(--gray-bg);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.faq-item {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.faq-item h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* News Section */
.news {
    padding: 80px 0;
    background: var(--bg-color);
}

.news-list {
    margin-top: 40px;
}

.news-item {
    padding: 25px;
    border-bottom: 1px solid #eee;
    transition: all 0.3s ease;
}

.news-item:hover {
    background: var(--gray-bg);
}

.news-item:last-child {
    border-bottom: none;
}

.news-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: #666;
}

.news-category {
    color: var(--primary-color);
    font-weight: 500;
}

.news-date {
    color: #999;
}

.news-item h3 {
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.news-item h3 a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.news-item h3 a:hover {
    color: var(--primary-color);
}

.news-excerpt {
    color: #666;
    line-height: 1.6;
    margin-bottom: 0;
}

.news-more {
    text-align: center;
    margin-top: 40px;
}

.btn-more {
    display: inline-block;
    padding: 12px 30px;
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-more:hover {
    background: var(--primary-color);
    color: white;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .news-item {
        padding: 20px 15px;
    }
    
    .news-item h3 {
        font-size: 1.1rem;
    }
    
    .news-excerpt {
        font-size: 0.9rem;
    }
}

/* Footer */
footer {
    padding: 40px 0;
    background: #24292e;
    color: #fff;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    color: white;
    margin-bottom: 20px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin: 10px 0;
}

.footer-col ul li a,
.footer-col ul li {
    color: #8b949e;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
}

.language-selector {
    margin-bottom: 20px;
}

.language-selector select {
    padding: 8px 16px;
    border-radius: 4px;
    border: 1px solid var(--primary-color);
    background: #333;
    color: #fff;
    cursor: pointer;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .pricing-item.popular {
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        height: auto;
        padding: 20px 0;
    }
    
    .nav-links {
        flex-direction: column;
        width: 100%;
        gap: 20px;
        margin-top: 20px;
    }
    
    .nav-links a::after {
        display: none;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .pricing-item {
        padding: 30px 20px;
    }
}