*{margin:0;padding:0;box-sizing:border-box;font-family:system-ui,-apple-system,"Microsoft Yahei",sans-serif;}
body{background:#f7f8fa;color:#333;font-size:15px;}
:root{
    --main-orange:#ff9845;
    --main-blue:#4086f4;
    --main-green:#36c775;
    --main-gray:#888;
    --card-bg:#ffffff;
    --page-bg:#f7f8fa;
    --radius:14px;
    --shadow:0 1px 8px rgba(0,0,0,0.05);
}
.text-primary{color:var(--main-blue);}
.text-success{color:var(--main-green);}
.text-warning{color:var(--main-orange);}
.text-danger{color:#f55555;}
.text-info{color:#666;}
.flex-between{display:flex;justify-content:space-between;align-items:center;}
.flex-center{display:flex;justify-content:center;align-items:center;}
.mt-10{margin-top:10px;}
.btn{border:none;border-radius:8px;padding:8px 16px;cursor:pointer;font-size:14px;}
.btn-primary{background:var(--main-blue);color:#fff;}