/* 全局样式 */
* {
    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: #333;
    background-color: #fff;
}

.container {
    max-width: 1260px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background-color: #1e88e5;
    color: white;
    border: 1px solid #1e88e5;
}

.btn-primary:hover {
    background-color: #1976d2;
    border-color: #1976d2;
}

.btn-outline {
    background-color: transparent;
    color: #1e88e5;
    border: 1px solid #1e88e5;
}

.btn-outline:hover {
    background-color: rgba(30, 136, 229, 0.1);
}

.btn-large {
    padding: 12px 24px;
    font-size: 1.1rem;
}

/* 头部样式 */
.header {
    position: sticky;
    top: 0;
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 100;
    padding: 13px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #1e88e5;
}

.logo img {
    height: 45px;
    margin-right: 10px;
}

.nav ul {
    display: flex;
    gap: 30px;
    font-size: 1.2rem;
}

.nav a {
    font-weight: 500;
    color: #555;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: #1e88e5;
}

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

.language-selector {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.language-selector:hover {
    background-color: #f5f5f5;
}

/* 英雄区域样式 */
.hero {
    padding: 80px 0;
    background: linear-gradient(to bottom, #f9fbfd, #fff);
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 50px;
}

.hero-content {
    flex: 1;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #1a1a1a;
    line-height: 1.3;
}

.hero p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 30px;
    max-width: 90%;
}

.hero-actions {
    display: flex;
    gap: 15px;
}

/* 特性区域样式 */
.features {
    padding: 80px 0;
    background-color: #f9fbfd;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 10px;
    color: #1a1a1a;
}

.features h3 {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 500;
    color: #666;
    margin-bottom: 50px;
}

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

.feature-card {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(30, 136, 229, 0.1);
    border-radius: 12px;
}

.feature-icon img {
    width: 30px;
    height: 30px;
}

.feature-card h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #1a1a1a;
}

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

/* CTA 区域样式 */
.cta {
    padding: 80px 0;
    text-align: center;
    background-color: #fff;
}

.cta h2 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: #1a1a1a;
}

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

/* FAQ 区域样式 */
.faq {
    padding: 80px 0;
    background-color: #f9fbfd;
}

.faq h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 10px;
    color: #1a1a1a;
}

.faq > .container > p {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 50px;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
    gap: 30px;
}

.faq-item {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.faq-item h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #1a1a1a;
}

.faq-item p {
    color: #666;
    line-height: 1.6;
}

/* 页脚样式 */
.footer {
    padding: 60px 0 30px;
    background-color: #1a1a1a;
    color: #fff;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 50px;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.footer-logo img {
    height: 30px;
    margin-right: 10px;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-links-group h5 {
    font-size: 1rem;
    margin-bottom: 20px;
    color: #fff;
}

.footer-links-group ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links-group a {
    color: #aaa;
    transition: color 0.3s ease;
}

.footer-links-group a:hover {
    color: #fff;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #aaa;
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-links a {
    color: #aaa;
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #fff;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero .container {
        flex-direction: column;
    }
    
    .hero-content, .hero-image {
        text-align: center;
    }
    
    .hero p {
        max-width: 100%;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .feature-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header .container {
        flex-wrap: wrap;
    }
    
    .nav {
        order: 3;
        width: 100%;
        margin-top: 15px;
    }
    
    .nav ul {
        justify-content: center;
    }
    
    .footer-top {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .footer-links-group {
        min-width: 120px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .actions {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}