*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:"Microsoft Yahei",sans-serif;
}
body{
    background:#f5f7fa;
    padding:20px;
}
.container{
    max-width:1400px;
    margin:0 auto;
}
h1{
    text-align:center;
    color:#222;
    margin-bottom:20px;
}
#china-map{
    width:100%;
    height:700px;
    background:#fff;
    border-radius:10px;
    box-shadow:0 2px 12px rgba(0,0,0,0.08);
}
.prov-box{
    background:#fff;
    border-radius:10px;
    padding:30px;
    box-shadow:0 2px 12px rgba(0,0,0,0.08);
}
.city-list{
    display:grid;
    grid-template-columns: repeat(auto-fill, minmax(140px,1fr));
    gap:15px;
    margin-top:20px;
}
.city-item a{
    display:block;
    padding:12px;
    text-align:center;
    background:#409eff;
    color:#fff;
    text-decoration:none;
    border-radius:6px;
    transition:0.2s;
}
.city-item a:hover{
    background:#2b7cd3;
}
.date-select{
    margin:20px 0;
    padding:20px;
    background:#fff;
    border-radius:10px;
    box-shadow:0 2px 12px rgba(0,0,0,0.08);
}
.date-select input{
    padding:8px 12px;
    font-size:16px;
    width:300px;
    border:1px solid #ddd;
    border-radius:6px;
}
.weather-card{
    background:#fff;
    border-radius:10px;
    padding:30px;
    box-shadow:0 2px 12px rgba(0,0,0,0.08);
}
.weather-card p{
    font-size:18px;
    line-height:2.2;
    color:#333;
}
.back-btn{
    display:inline-block;
    margin-bottom:20px;
    padding:10px 20px;
    background:#666;
    color:#fff;
    text-decoration:none;
    border-radius:6px;
}
.back-btn:hover{
    background:#444;
}
.tips{
    color:#999;
    margin-top:10px;
}