/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
    line-height: 1.6;
}

/* 容器 */
.container {
    max-width: 1100px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    padding: 40px;
}

/* 头部 */
header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 3px solid #667eea;
}

.logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo i {
    font-size: 40px;
    color: white;
}

header h1 {
    font-size: 2.2rem;
    color: #333;
    margin-bottom: 10px;
    font-weight: 600;
}

.subtitle {
    font-size: 1.1rem;
    color: #667eea;
    letter-spacing: 2px;
}

/* 章节标题 */
h2 {
    font-size: 1.5rem;
    color: #333;
    margin: 40px 0 20px;
    padding-left: 15px;
    border-left: 4px solid #667eea;
    display: flex;
    align-items: center;
}

h2 i {
    color: #667eea;
    margin-right: 10px;
    font-size: 1.3rem;
}

/* 关于我们 */
.about-section {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 20px;
    border-left: 4px solid #667eea;
}

.about-section p {
    margin-bottom: 15px;
    color: #555;
    font-size: 1.05rem;
}

.about-section p:last-child {
    margin-bottom: 0;
}

/* 核心优势网格 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.advantage-card {
    background: #f8f9fa;
    padding: 25px 20px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid #e9ecef;
    position: relative;
    transition: transform 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.2);
}

.advantage-card.highlight {
    background: linear-gradient(135deg, #f8f9fa 0%, #e8f0fe 100%);
    border: 2px solid #667eea;
}

.advantage-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.advantage-icon i {
    font-size: 32px;
    color: white;
}

.advantage-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #333;
}

.advantage-card p {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 15px;
}

.badge {
    position: absolute;
    top: -10px;
    right: 10px;
    background: #f44336;
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(244, 67, 54, 0.3);
}

/* 服务卡片网格 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.service-card {
    background: #f8f9fa;
    padding: 25px 15px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid #e9ecef;
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.2);
}

.service-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon i {
    font-size: 28px;
    color: white;
}

.service-card h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: #333;
}

.service-card p {
    font-size: 0.9rem;
    color: #666;
}

/* 为什么选择我们 */
.why-us {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    margin: 30px 0;
    border: 1px solid #e9ecef;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background: white;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.feature-item i {
    color: #4caf50;
    font-size: 1.2rem;
}

.feature-item span {
    color: #555;
    font-size: 0.95rem;
}

.feature-item strong {
    color: #333;
}

/* 联系方式 */
.contact-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: 30px;
    border-radius: 10px;
    margin: 30px 0 20px;
    border: 1px solid #e9ecef;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: white;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    transition: background-color 0.3s ease;
}

.contact-item:hover {
    background-color: #f0f7ff;
}

.contact-item i {
    font-size: 24px;
    color: #667eea;
    width: 40px;
    text-align: center;
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: 5px;
    color: #333;
}

.contact-item p {
    font-size: 0.9rem;
    color: #666;
}

/* 温馨提示 */
.notice {
    background: #fff3e0;
    border-left: 4px solid #ff9800;
    padding: 15px 20px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 20px 0;
}

.notice i {
    color: #ff9800;
    font-size: 1.2rem;
}

.notice p {
    color: #666;
    font-size: 0.95rem;
}

/* 页脚 */
footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #e9ecef;
}

.footer-content {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
}

.footer-content p {
    margin: 5px 0;
}

.icp a {
    color: #667eea;
    text-decoration: none;
    font-size: 0.85rem;
}

.icp a:hover {
    text-decoration: underline;
}

/* 响应式 */
@media (max-width: 768px) {
    .container {
        padding: 20px;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .features-list {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    h2 {
        font-size: 1.3rem;
    }
    
    .badge {
        position: static;
        display: inline-block;
        margin-top: 10px;
    }
}