*{margin:0;padding:0;box-sizing:border-box;font-family:Microsoft Yahei;}
body{background:#f5f7fa;font-size:14px;color:#333;max-width:480px;margin:0 auto;padding:15px;min-height:100vh;}
h2{text-align:center;color:#222;margin:20px 0;font-size:20px;}
.box{background:#fff;border-radius:10px;padding:15px;margin-bottom:15px;box-shadow:0 2px 8px #eee;}
p{margin:12px 0;line-height:1.6;}
input{width:100%;height:44px;padding:0 10px;border:1px solid #ddd;border-radius:6px;font-size:14px;margin:6px 0;}
.btn{display:block;width:100%;height:44px;border:none;border-radius:6px;font-size:15px;color:#fff;cursor:pointer;text-align:center;line-height:44px;text-decoration:none;margin:10px 0;}
.btn-orange{background:#ff7800;}
.btn-green{background:#00b42a;}
.btn-blue{background:#1677ff;}
.btn-gray{background:#999;}
table{width:100%;border-collapse:collapse;margin:10px 0;}
td,th{border:1px solid #eee;padding:8px;text-align:center;font-size:13px;}
th{background:#f8f9fa;}
.nav{display:flex;justify-content:space-around;background:#fff;border-radius:8px;padding:10px;margin:15px 0;}
.nav a{color:#333;text-decoration:none;font-size:14px;}
.red{color:#f53f3f;}
.green{color:#00b42a;}
.gray{color:#999;}