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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    text-decoration: none;
    color: #0066cc;
}

a:hover {
    color: #004499;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #0066cc;
    color: white;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #004499;
    color: white;
}

/* 头部样式 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

header h1 a {
    color: #333;
}

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

header nav ul li {
    margin-left: 20px;
}

header nav ul li a {
    color: #333;
    font-weight: 500;
}

header nav ul li a:hover {
    color: #0066cc;
}

/* 主要内容区域 */
main {
    margin-top: 80px;
    padding: 40px 0;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 100px 0;
}

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

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

/* 特性网格 */
.features,
.services-grid,
.team-grid {
    margin: 50px 0;
}

.feature-grid,
.services-grid,
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.feature,
.service,
.team-member {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

.feature:hover,
.service:hover,
.team-member:hover {
    transform: translateY(-5px);
}

.feature h3,
.service h3,
.team-member h3 {
    margin-bottom: 15px;
    color: #0066cc;
}

.position {
    color: #666;
    font-style: italic;
    margin-bottom: 15px;
}

/* 关于页面 */
.about h2,
.services h2,
.contact h2,
.team h2,
.case-studies h2 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
}

.subtitle {
    text-align: center;
    margin-bottom: 40px;
    color: #666;
}

/* 联系我们页面 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 40px;
}

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

.contact-info h3 {
    margin-bottom: 20px;
    color: #0066cc;
}

.contact-info p {
    margin-bottom: 15px;
}

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

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
}

.success-message {
    background-color: #dff0d8;
    color: #3c763d;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
    text-align: center;
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: white;
    padding: 30px 0;
    text-align: center;
}

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

.footer-links a {
    color: #ccc;
    margin-left: 15px;
}

.footer-links a:hover {
    color: white;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }

    header .container {
        flex-direction: column;
    }

    header nav ul {
        margin-top: 15px;
    }

    header nav ul li {
        margin: 0 10px;
    }
}