/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #64748b;
    --light-bg: #f1f5f9;
    --dark-text: #1e293b;
    --light-text: #f8fafc;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    text-align: center;
}

.primary-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
}

.primary-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.secondary-btn {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.secondary-btn:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.large-btn {
    padding: 14px 32px;
    font-size: 18px;
}

/* 导航栏样式 */
.navbar {
    background-color: white;
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 28px;
}

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

.desktop-nav a {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 500;
    transition: var(--transition);
}

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

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--dark-text);
}

.mobile-nav {
    display: none;
    background-color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.mobile-nav ul {
    list-style: none;
    padding: 20px;
}

.mobile-nav li {
    margin-bottom: 15px;
}

.mobile-nav a {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 500;
    transition: var(--transition);
}

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

/* 英雄区域样式 */
.hero {
    margin-top: 80px;
    padding: 80px 0;
    background-color: var(--light-bg);
}

.hero .container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 40px;
}

.hero-content {
    flex: 1 1 500px;
}

.hero-content h1 {
    font-size: 42px;
    margin-bottom: 20px;
    color: var(--dark-text);
    line-height: 1.2;
}

.hero-content p {
    font-size: 18px;
    color: var(--secondary-color);
    margin-bottom: 30px;
    max-width: 600px;
}

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

.hero-image {
    flex: 1 1 400px;
}

.hero-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

/* 功能特点样式 */
.features {
    padding: 80px 0;
}

.features h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 60px;
    color: var(--dark-text);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background-color: var(--light-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon i {
    font-size: 24px;
    color: var(--primary-color);
}

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

.feature-card p {
    color: var(--secondary-color);
}

/* 平台优势样式 */
.advantages {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.advantages h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 60px;
    color: var(--dark-text);
}

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

.advantage-item {
    background-color: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.advantage-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.advantage-item p {
    color: var(--secondary-color);
}

/* 技术支持样式 */
.support {
    padding: 80px 0;
}

.support h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: var(--dark-text);
}

.support-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.support-content p {
    font-size: 18px;
    color: var(--secondary-color);
    margin-bottom: 30px;
}

.support-contacts {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.support-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--primary-color);
    font-size: 18px;
    transition: var(--transition);
}

.support-link:hover {
    color: var(--primary-dark);
}

.support-link i {
    font-size: 24px;
}

/* 行动召唤样式 */
.cta {
    padding: 100px 0;
    background-color: var(--primary-color);
    text-align: center;
    color: white;
}

.cta h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

.cta p {
    font-size: 18px;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.cta .primary-btn:hover {
    background-color: var(--light-text);
}

/* 页脚样式 */
.footer {
    background-color: var(--dark-text);
    color: var(--light-text);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
}

.footer-logo i {
    font-size: 28px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

.footer-links a {
    color: var(--light-text);
    text-decoration: none;
    transition: var(--transition);
}

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

.copyright {
    margin-top: 20px;
    color: var(--secondary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-content h1 {
        font-size: 32px;
    }
    
    .features h2,
    .advantages h2,
    .support h2,
    .cta h2 {
        font-size: 28px;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .features,
    .advantages,
    .support {
        padding: 60px 0;
    }
    
    .cta {
        padding: 80px 0;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
}