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

body {
    font-family: "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    z-index: 1000;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2c3e50;
}

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

.nav-menu li {
    margin-left: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #3498db;
}

/* 轮播图样式 */
.slider-section {
    margin-top: 70px;
    position: relative;
    overflow: hidden;
    height: 500px;
}

.slider-container {
    display: flex;
    transition: transform 0.5s ease;
    height: 100%;
}

.slide {
    min-width: 100%;
    position: relative;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-content {
    position: absolute;
    bottom: 20%;
    left: 10%;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.slide-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.slider-prev,
.slider-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.5);
    border: none;
    padding: 1rem;
    cursor: pointer;
    font-size: 1.5rem;
}

.slider-prev {
    left: 1rem;
}

.slider-next {
    right: 1rem;
}

/* 精品项目展示样式 */
.projects-section {
    padding: 4rem 2rem;
    background-color: #f8f9fa;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-size: 2rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.project-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-card h3 {
    padding: 1rem;
    color: #2c3e50;
}

.project-card p {
    padding: 0 1rem 1rem;
    color: #666;
}

/* 留言板样式 */
.message-section {
    padding: 4rem 2rem;
}

.message-container {
    max-width: 800px;
    margin: 0 auto;
}

.message-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.message-form input,
.message-form textarea {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.message-form textarea {
    height: 150px;
    resize: vertical;
}

#submit-message {
    background-color: #3498db;
    color: #fff;
    border: none;
    padding: 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

#submit-message:hover {
    background-color: #2980b9;
}

.message-list {
    margin-top: 2rem;
}

.message-item {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.message-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.message-item p {
    color: #666;
}

/* 页脚样式 */
.footer {
    background-color: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
}

/* 关于我们样式 */
.about-section {
    padding: 4rem 2rem;
    background-color: #fff;
}

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

.about-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.about-text {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-text h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.about-text p {
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.feature-item {
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: #666;
}

/* 联系我们样式 */
.contact-section {
    padding: 4rem 2rem;
    background-color: #f8f9fa;
}

.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

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

.contact-item {
    text-align: center;
    padding: 2rem;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: #666;
}

.contact-map {
    width: 100%;
    height: 100%;
    min-height: 400px;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.map-placeholder {
    width: 100%;
    height: 100%;
}

.map-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 响应式布局调整 */
@media (max-width: 768px) {
    .contact-container {
        grid-template-columns: 1fr;
    }

    .about-features,
    .contact-info {
        grid-template-columns: 1fr;
    }
}