/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航栏 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo h1 {
    color: #FF7F50;
    font-size: 24px;
    font-weight: bold;
}

.nav ul {
    display: flex;
    list-style: none;
}

.nav ul li {
    margin-left: 30px;
}

.nav ul li a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    transition: color 0.3s;
}

.nav ul li a:hover {
    color: #FF7F50;
}

.phone {
    font-size: 16px;
    color: #333;
}

/* 英雄区域 */
.hero {
    background-color: #FF7F50;
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

.hero h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 24px;
    margin-bottom: 10px;
}

.hero .subtitle {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    background-color: #fff;
    color: #FF7F50;
    padding: 12px 30px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s;
}

.btn:hover {
    background-color: #f5f5f5;
    transform: translateY(-2px);
}

/* 产品功能区域 */
.features {
    padding: 80px 0;
    background-color: #fff;
}

.features h3 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 60px;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 8px;
    transition: transform 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-item h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #333;
}

.feature-item p {
    color: #666;
    font-size: 14px;
}

/* 公司业务简介区域 */
.about {
    padding: 80px 0;
    background-color: #f5f5f5;
}

.about h3 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 60px;
    color: #333;
}

.about-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: center;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-text h4 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #333;
}

.about-text p {
    margin-bottom: 15px;
    color: #666;
    font-size: 16px;
}

.about-image {
    flex: 1;
    min-width: 300px;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 联系信息区域 */
.contact {
    padding: 80px 0;
    background-color: #fff;
}

.contact h3 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 60px;
    color: #333;
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.contact-info {
    flex: 1;
    min-width: 300px;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 8px;
}

.contact-info h4 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #333;
}

.contact-info p {
    margin-bottom: 15px;
    color: #666;
    font-size: 16px;
}

.contact-form {
    flex: 1;
    min-width: 300px;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 8px;
}

.contact-form h4 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #333;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #FF7F50;
}

/* 底部区域 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info {
    flex: 1;
    min-width: 200px;
}

.footer-info h4 {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-info p {
    margin-bottom: 10px;
    font-size: 14px;
    opacity: 0.8;
}

.footer-links {
    flex: 1;
    min-width: 200px;
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    text-decoration: none;
    color: #fff;
    font-size: 14px;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-links ul li a:hover {
    opacity: 1;
}

.footer-contact {
    flex: 1;
    min-width: 200px;
}

.footer-contact h4 {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-contact p {
    margin-bottom: 10px;
    font-size: 14px;
    opacity: 0.8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    font-size: 14px;
    opacity: 0.8;
}

.footer-bottom p {
    margin-bottom: 10px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav ul {
        margin: 20px 0;
    }

    .nav ul li {
        margin-left: 0;
        margin-right: 20px;
    }

    .phone {
        margin-top: 10px;
    }

    .hero h2 {
        font-size: 28px;
    }

    .hero p {
        font-size: 20px;
    }

    .hero .subtitle {
        font-size: 16px;
    }

    .about-content,
    .contact-content,
    .footer-content {
        flex-direction: column;
    }

    .footer-content > div {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 0;
    }

    .features,
    .about,
    .contact {
        padding: 60px 0;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer {
        padding: 40px 0 20px;
    }
}