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

html, body {
    height: 100%;
}

body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    line-height: 1.6;
    color: #2c3e50;
    background-color: #ffffff;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 0;
    box-shadow: 0 2px 15px rgba(52, 152, 219, 0.2);
    position: relative;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

header h1 {
    font-size: 2rem;
    font-weight: bold;
    margin: 0;
}

/* 汉堡菜单按钮 */
.hamburger-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger-btn span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 2px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* 导航菜单 */
.main-nav {
    background: linear-gradient(135deg, #2980b9, #3498db);
    padding: 0 2rem;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
    padding: 1rem 0;
}

.main-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    display: block;
}

.main-nav a:hover, .main-nav a.active {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* 横幅样式 */
.banner {
    background: linear-gradient(rgba(255,255,255,0.9), rgba(255,255,255,0.9)), 
                url('../images/banner.jpg') center/cover;
    color: #2c3e50;
    text-align: center;
    padding: 4rem 2rem;
    margin: 2rem;
    border-radius: 15px;
    border: 2px solid #e8f4fc;
}

.banner h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #2980b9;
}

.banner p {
    font-size: 1.2rem;
    color: #555;
    margin-bottom: 3rem;
}

.business-scope {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.scope-item {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(248, 249, 250, 0.95));
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(52, 152, 219, 0.15);
    border: 2px solid rgba(52, 152, 219, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.scope-item:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3498db, #2980b9);
}

.scope-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(52, 152, 219, 0.25);
}

.scope-item h3 {
    color: #2c3e50;
    margin-bottom: 1.2rem;
    font-size: 1.8rem;
    font-weight: 600;
    position: relative;
}

.scope-item h3:after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: #3498db;
    border-radius: 2px;
}

.scope-item p {
    color: #555;
    font-size: 1.1rem;
    margin: 0;
    line-height: 1.6;
    font-weight: 400;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .business-scope {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .scope-item {
        padding: 2rem 1.5rem;
    }
    
    .scope-item h3 {
        font-size: 1.5rem;
    }
    
    .scope-item p {
        font-size: 1rem;
    }
}

/* 主内容区域 */
main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 2rem;
    background: #fafdfe;
    flex: 1;
    position: relative;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

/* 页脚样式 */
footer {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    text-align: center;
    padding: 1.5rem;
    margin-top: auto;
    width: 100%;
}
/* 业绩展示区域 */
.performance-section {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #f8f9fa, #e8f4fc);
    margin: 2rem;
    border-radius: 20px;
}

.performance-section .container {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.performance-section h2 {
    color: #2c3e50;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: #555;
    font-size: 1.2rem;
    margin-bottom: 3rem;
}

.chart-container {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 3rem;
    border: 1px solid #e8f4fc;
}

.performance-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid #e8f4fc;
}

.stat-item h3 {
    color: #555;
    font-size: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.stat-value {
    color: #2980b9;
    font-size: 1.8rem;
    font-weight: bold;
    margin: 0;
}

/* 响应式设计 - 移动端适配 */
@media (max-width: 768px) {
    /* 头部导航 */
    .header-container {
        padding: 1rem;
    }
    
    header h1 {
        font-size: 1.5rem;
        text-align: left;
    }
    
    .hamburger-btn {
        display: flex;
    }
    
    .main-nav {
        max-height: 0;
        overflow: hidden;
        padding: 0;
        transition: max-height 0.3s ease;
    }
    
    .main-nav.active {
        max-height: 500px;
        padding: 0 1rem;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 0;
        padding: 1rem 0;
    }
    
    .main-nav li {
        width: 100%;
    }
    
    .main-nav a {
        padding: 1rem;
        text-align: left;
        border-radius: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .main-nav a:hover, .main-nav a.active {
        background: rgba(255, 255, 255, 0.1);
        transform: none;
    }
    
    /* 横幅区域 */
    .banner {
        padding: 2rem 1rem;
        margin: 1rem;
    }
    
    .banner h2 {
        font-size: 2rem;
    }
    
    .banner p {
        font-size: 1.1rem;
        margin-bottom: 2rem;
    }
    
    .business-scope {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-top: 2rem;
    }
    
    .scope-item {
        padding: 1.5rem 1rem;
    }
    
    .scope-item h3 {
        font-size: 1.3rem;
    }
    
    .scope-item p {
        font-size: 0.95rem;
    }
    
    /* 业绩展示区域 */
    .performance-section {
        padding: 2rem 1rem;
        margin: 1rem;
    }
    
    .performance-section h2 {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
        margin-bottom: 2rem;
    }
    
    .chart-container {
        padding: 1rem;
        margin-bottom: 2rem;
    }
    
    .performance-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-item {
        padding: 1rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    /* 主内容区域 */
    main {
        padding: 2rem 1rem;
    }
}

/* 超小屏幕适配 */
@media (max-width: 480px) {
    header h1 {
        font-size: 1.3rem;
    }
    
    .banner h2 {
        font-size: 1.7rem;
    }
    
    .performance-section h2 {
        font-size: 1.6rem;
    }
    
    .scope-item h3 {
        font-size: 1.2rem;
    }
    
    .stat-value {
        font-size: 1.3rem;
    }
}