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

body {
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

.container {
    width: 80%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 0;
}

/* 导航栏样式 */
.navbar {
    background: #7eb4ff;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.brand {
    color: #fff;
    font-size: 1.8rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #00c1ff;
}

/* 主要内容区域 */
.hero-section {
    background: linear-gradient(135deg, #ffffff 0%, #f3f7fa 100%);
    padding: 4rem 0;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.service-card {
    margin-top:10px;
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
}

/* 页脚样式 */
footer {
    background: #1a1a1a;
    color: #fff;
    padding: 2rem 0;
    margin-top: 4rem;
}

.text-light {
    color: #fff;
    text-decoration: none;
    margin: 0 0.5rem;
}

.text-light:hover {
    color: #00c1ff;
}

/* 工具类 */
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.text-center { text-align: center; }