/* 通用样式 */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

.container {
    width: 80%;
    margin: 0 auto;
}

h1, h2, h3 {
    color: #333;
}

/* 头部 */
header {
    background-color: #2c3e50;
    padding: 20px 0;
}

header .logo h1 {
    color: white;
    margin-left: 20px;
}

header nav ul {
    list-style-type: none;
    padding: 0;
}

header nav ul li {
    display: inline;
    margin: 0 15px;
}

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

/* 英雄区 */
#hero {
    background-color: #2980b9;
    color: white;
    padding: 60px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

#hero .hero-text h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

#hero .hero-text p {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

#hero .btn-primary {
    background-color: #27ae60;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
}

#hero .hero-image img {
    max-width: 40%;
}

/* 特点区 */
#features {
    padding: 50px 0;
    background-color: #ecf0f1;
}

#features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
}

.feature-boxes {
    display: flex;
    justify-content: space-between;
    gap: 30px;
}

.feature-box {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    width: 23%;
}

.feature-box i {
    font-size: 3rem;
    color: #2980b9;
    margin-bottom: 15px;
}

.feature-box h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

/* 优势区 */
#benefits {
    padding: 50px 0;
}

#benefits ul {
    list-style-type: none;
    padding: 0;
}

#benefits ul li {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

/* 联系我们区 */
#contact {
    padding: 50px 0;
    background-color: #2c3e50;
    color: white;
}

#contact form {
    max-width: 600px;
    margin: 0 auto;
}

#contact form label {
    display: block;
    margin-bottom: 10px;
    font-weight: bold;
}

#contact form input,
#contact form textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

#contact form button {
    background-color: #27ae60;
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 5px;
    font-weight: bold;
}

/* 页脚 */
footer {
    background-color: #34495e;
    color: white;
    padding: 20px 0;
    text-align: center;
}

footer p {
    font-size: 1rem;
}