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

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

/* 导航栏样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo img {
    height: 50px;
}

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

.nav-links li {
    position: relative;
    margin-left: 25px;
}

.nav-links li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
    padding: 10px 0;
    display: block;
}

.nav-links li a:hover,
.nav-links li a.active {
    color: #ff6b6b;
}

/* 子菜单样式 */
.submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    min-width: 220px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-radius: 5px;
    padding: 10px 0;
    z-index: 100;
}

.has-submenu:hover .submenu {
    display: block;
}

.submenu li {
    margin: 0;
}

.submenu li a {
    padding: 10px 20px;
    color: #555;
    font-weight: 400;
    font-size: 14px;
}

.submenu li a:hover {
    background-color: #f8f9fa;
    color: #ff6b6b;
}

/* 移动端菜单样式 */
.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
}

.line {
    width: 100%;
    height: 3px;
    background-color: #333;
    transition: all 0.3s ease;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .nav-links {
        position: fixed;
        top: 80px;
        right: -100%;
        flex-direction: column;
        background-color: #fff;
        width: 70%;
        height: calc(100vh - 80px);
        padding: 20px;
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
        transition: right 0.3s ease;
        z-index: 999;
    }
    
    .nav-links.show {
        right: 0;
    }
    
    .nav-links li {
        margin: 15px 0;
    }
    
    .has-submenu .submenu {
        position: static;
        display: none;
        padding-left: 20px;
        box-shadow: none;
        background-color: #f8f9fa;
    }
    
    .has-submenu.open .submenu {
        display: block;
    }
    
    .hamburger {
        display: flex;
    }
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('images/hero-bg.jpg') no-repeat center center/cover;
    color: white;
    padding: 100px 20px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.cta-button {
    display: inline-block;
    background-color: #ff6b6b;
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
}

.cta-button:hover {
    background-color: #ff4d4d;
    transform: translateY(-3px);
}

/* 服务部分样式 */
.services {
    padding: 80px 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.services h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2rem;
    color: #ff6b6b;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.service-card {
    border: 1px solid #ddd;
    padding: 20px;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background-color: #fff;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.service-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 15px;
}

.service-card h3 {
    margin-bottom: 15px;
    color: #ff6b6b;
    font-size: 1.2rem;
}

.service-link {
    display: inline-block;
    margin-top: 10px;
    color: #ff6b6b;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
}

.service-link:hover {
    text-decoration: underline;
}

.sub-services {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px dashed #ddd;
}

.sub-services a {
    display: block;
    margin: 3px 0;
    color: #ff6b6b;
    text-decoration: none;
    font-size: 0.85rem;
}

.sub-services a:hover {
    text-decoration: underline;
}

.case-study {
    margin-top: 15px;
    padding: 12px;
    background-color: #f8f9fa;
    border-radius: 8px;
}

.case-study h4 {
    color: #ff6b6b;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.case-study p {
    font-size: 0.9rem;
}

/* 联系部分样式 */
.contact-section {
    padding: 80px 5%;
    background-color: #f8f9fa;
}

.contact-section h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2rem;
    color: #ff6b6b;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info, .contact-form {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.contact-info h3, .contact-form h3 {
    margin-bottom: 20px;
    color: #ff6b6b;
}

.contact-info p {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.contact-info i {
    margin-right: 10px;
    color: #ff6b6b;
}

.social-links {
    margin-top: 30px;
}

.social-links a {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    color: #333;
    text-decoration: none;
}

.social-links i {
    margin-right: 10px;
    color: #ff6b6b;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 0.95rem;
}

.submit-button {
    background-color: #ff6b6b;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s;
    font-size: 1rem;
}

.submit-button:hover {
    background-color: #ff4d4d;
}

.status-message {
    margin-top: 15px;
    padding: 10px;
    border-radius: 5px;
    display: none;
    font-size: 0.95rem;
}

/* 页脚样式 */
footer {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 30px 5%;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-links {
    margin-top: 15px;
}

.footer-links a {
    color: #ecf0f1;
    margin: 0 15px;
    text-decoration: none;
    font-size: 0.95rem;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* 锚点偏移样式 */
.section-anchor {
    padding-top: 80px;
    margin-top: -80px;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .service-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .service-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card img {
        height: 180px;
    }
}