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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: #f0f2f5;
    color: #1a1a2e;
    line-height: 1.6;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background: #fff;
    box-shadow: 0 2px 20px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
}

.logo a {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-decoration: none;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.slogan {
    font-size: 14px;
    color: #666;
    margin-left: 10px;
    padding-left: 10px;
    border-left: 1px solid #ddd;
}
.nav-menu {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-menu a {
    color: #4a5568;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #667eea;
}

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

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    cursor: pointer;
}

/* 主视觉区 Hero */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0;
    position: relative;
}

.hero-content {
    text-align: center;
    color: white;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn-hero {
    padding: 12px 32px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    display: inline-block;
}

.btn-hero-primary {
    background: white;
    color: #667eea;
}

.btn-hero-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.btn-hero-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-hero-secondary:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

/* 统计数字 */
.stats {
 
    margin-top: -40px;
    position: relative;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    padding: 40px;
}

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

.stat-item h3 {
    font-size: 36px;
    color: #667eea;
    margin-bottom: 10px;
}

.stat-item p {
    color: #666;
    font-size: 14px;
}

/* 模块通用样式 */
.section {
    margin: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.
    font-size: 32px;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.section-title p {
    color: #666;
    font-size: 16px;
}

/* 卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.card-image {
    height: 160px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
}

.card-content {
    padding: 20px;
}

.card-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #1a1a2e;
}

.card-content p {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
    line-height: 1.5;
}

.c
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: #999;
}

.badge {
    background: #e8f4f8;
    color: #667eea;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
}

.price {
    color: #f56565;
    font-weight: 600;
}

/* 特色功能区 */
.features {
    background: #f8f9fc;
    padding: 60px 0;
    margin: 60px -20px;
}

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

.feature-item {
    padding: 30px;
}

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

.feature-item h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #1a1a2e;
}

.feature-item p {
    color: #666;
    font-size: 14px;
}

/* 底部 */
.footer {
    background: #1a1a2e;
    color: #fff;
    padding: 50px 0 20px;
    margin-top: 60px;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-logo {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-about p {
    color: #aaa;
    font-size: 14px;
    line-height: 1.8;
}

.footer-links h4 {
    margin-bottom: 15px;
    font-size: 16px;
}

.footer-links a {
    color: #aaa;
    text-decoration: none;
    font-size: 14px;
    display: block;
    margin-bottom: 10px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #667eea;
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    margin-top: 40px;
    border-top: 1px solid #333;
    color: #aaa;
    font-size: 12px;
}

/* 响应式 */
@media (max-width: 768px) {
    .stats-grid, .features-grid, .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }
    .hero h1 {
        font-size: 32px;
    }
    .nav-menu {
        display: none;
    }
}