* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: #333;
    line-height: 1.7;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.page-header {
    background: #2c3e50;
    color: #fff;
    padding: 60px 0;
    text-align: center;
}
.page-header h1 {
    font-size: 42px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: 1px;
}
.page-header p {
    font-size: 18px;
    opacity: 0.85;
    max-width: 700px;
    margin: 0 auto;
}

.contact-section {
    padding: 60px 0;
}
.contact-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.contact-info h2, .contact-form h2 {
    font-size:28px;
    color:#222;
    margin-bottom:24px;
}
.info-item{
    margin-bottom:20px;
}
.info-item h4{
    color:#2c3e50;
    margin-bottom:4px;
}

.form-group{
    margin-bottom:18px;
}
.form-group label{
    display:block;
    margin-bottom:6px;
    font-weight:500;
}
.form-group input, .form-group textarea{
    width:100%;
    padding:12px;
    border:1px solid #ddd;
    border-radius:6px;
    font-size:16px;
}
.submit-btn{
    padding:14px 32px;
    background:#2c3e50;
    color:#fff;
    border:none;
    border-radius:6px;
    font-weight:600;
    cursor:pointer;
    transition:0.3s;
}
.submit-btn:hover{
    background:#1a2530;
}
#msg-tip{
    margin-top:12px;
}

/* 响应式 */
@media (max-width:992px){
    .contact-row{
        grid-template-columns:1fr;
    }
}
@media (max-width:576px){
    .page-header h1{
        font-size:30px;
    }
}