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

body {
    font-family: 'Arial', sans-serif;
    background-color: #f1f3f4;
    color: #333;
}

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

header {
    background-color: #00897b;
    padding: 20px 0;
}

.logo img {
    width: 100px;
}

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

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.hero {
    display: flex;
    justify-content: center; /* 水平居中 */
    align-items: center;     /* 垂直居中 */
    text-align: center;      /* 文本居中 */
    padding: 80px 0;
    background-color: #004d40;
    color: white;
}

@media (max-width: 768px) {
    .hero {
        flex-direction: column; /* 在小屏幕上垂直排列 */
    }

    .hero-text, .hero-image {
        max-width: 100%; /* 小屏幕上占据整个宽度 */
    }
}


.hero-text {
    max-width: 50%;
}

.hero-text h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero-text p {
    margin-bottom: 20px;
}

.cta-btn {
    padding: 15px 30px;
    background-color: #ff6f00;
    color: white;
    border: none;
    cursor: pointer;
}

.cta-btn:hover {
    background-color: #e65100;
}

.features {
    background-color: #f5f5f5;
    padding: 50px 0;
}

.features .container {
    display: flex;
    justify-content: space-between;
}

.feature-item {
    width: 30%;
    text-align: center;
}

.feature-item img {
    width: 60px;
    margin-bottom: 20px;
}

.pricing {
    padding: 50px 0;
}

.pricing h2 {
    text-align: center;
    margin-bottom: 40px;
}

.pricing-table {
    width: 100%;
    border-collapse: collapse;
    text-align: center;
}

.pricing-table th, .pricing-table td {
    padding: 15px;
    border: 1px solid #ddd;
}

.pricing-table th {
    background-color: #00897b;
    color: white;
}

.faq {
    background-color: #eeeeee;
    padding: 50px 0;
}

.faq h2 {
    text-align: center;
    margin-bottom: 30px;
}

.faq-item {
    margin-bottom: 20px;
    padding: 20px;
    border: 1px solid #ddd;
    background-color: white;
}

.faq-question {
    font-weight: bold;
    margin-bottom: 10px;
    cursor: pointer;
}

.faq-answer {
    display: none;
    color: #666;
}

footer {
    background-color: #004d40;
    color: white;
    padding: 20px 0;
    text-align: center;
}

footer p {
    margin: 0;
}

/* 整体样式 */
.system-features {
    padding: 20px;
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 8px;
    margin: 20px 0;
}

.system-features h2 {
    text-align: center;
    color: #00796b;
    margin-bottom: 20px;
    font-size: 1.8rem;
}

/* 自适应列表布局 */
.features-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.feature-item {
    flex: 1 1 calc(50% - 20px); /* 每行显示两个字段 */
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 15px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* 鼠标悬停效果 */
.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* 名称与描述样式 */
.feature-name {
    font-size: 1.2rem;
    color: #333;
    font-weight: bold;
    margin-bottom: 8px;
}

.feature-description {
    font-size: 1rem;
    color: #555;
    line-height: 1.5;
}