*{margin:0;padding:0;box-sizing:border-box;font-family:"Microsoft Yahei",sans-serif;}
body{background:#fff;color:#333;line-height:1.7;font-size:16px;}
.container{width:1200px;margin:0 auto;max-width:100%;padding:0 20px;}
ul{list-style:none;}
a{text-decoration:none;color:#333;}
.btn{display:inline-block;background:#165DFF;color:#fff;padding:12px 28px;border-radius:4px;transition:0.3s;}
.btn:hover{background:#0F48D1;}
.section{padding:70px 0;}
.bg-grey{background:#f7f8fa;}
.title{text-align:center;font-size:32px;margin-bottom:40px;color:#111;}
.text-center{text-align:center;}

.header{background:#fff;box-shadow:0 1px 5px #eee;padding:15px 0;position:sticky;top:0;z-index:99;}
.header .container{display:flex;justify-content:space-between;align-items:center;}
.logo img{height:45px;}
.logo-text{font-size:22px;font-weight:bold;color:#165DFF;}
.nav ul{display:flex;gap:26px;}
.nav a{font-size:15px;color:#333;}
.nav a:hover{color:#165DFF;}
.nav li.active a{color:#165DFF;font-weight:bold;}

.banner{background:#f0f5ff;padding:70px 0;}
.banner .container{display:flex;align-items:center;gap:44px;}
.banner-text{flex:1;}
.banner-visual{flex:1;min-width:0;}
.banner-text h1{font-size:44px;margin-bottom:16px;color:#111;}
.banner-text p{font-size:20px;color:#444;margin-bottom:30px;line-height:1.8;}

.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.card{background:#fff;border:1px solid #e8e8e8;padding:30px;border-radius:8px;}
.card h3{font-size:20px;margin-bottom:12px;color:#165DFF;}

.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.article-list.list-1col{grid-template-columns:1fr;}
.article-item{padding:24px;border:1px solid #eee;border-radius:8px;background:#fff;}
.article-item h3{font-size:18px;margin-bottom:14px;color:#165DFF;}
.article-item p{color:#666;font-size:14px;line-height:1.8;}
.article-item .date{color:#999;font-size:13px;}
.article-item:hover{border-color:#165DFF;box-shadow:0 2px 12px rgba(22,93,255,.08);}
.page{margin-top:30px;text-align:center;color:#666;}
.more-btn{margin-top:44px;}

.page-banner{background:#eef4ff;padding:50px 0;}
.page-banner h1{font-size:32px;color:#111;}

.content h2{font-size:24px;margin:30px 0 14px;}
.content p{margin-bottom:16px;color:#444;}
.table{width:100%;border-collapse:collapse;margin:30px 0;}
.table th,.table td{border:1px solid #ddd;padding:14px;text-align:left;}
.table th{background:#f4f7ff;}

.form-item{margin-bottom:18px;}
.form-item label{display:block;margin-bottom:6px;}
.form-item input,.form-item textarea{width:100%;padding:12px;border:1px solid #ddd;border-radius:4px;font-size:16px;}
.row{display:grid;grid-template-columns:1fr 1fr;gap:40px;}

.cta{background:#165DFF;color:#fff;}
.cta h2{color:#fff;}
.cta .btn{background:#fff;color:#165DFF;}
.cta .btn:hover{background:#f2f7ff;}

.footer{background:#f7f8fa;color:#555;padding:50px 0;border-top:1px solid #eee;}
.footer-box{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-bottom:30px;}
.footer-item h4{color:#333;margin-bottom:12px;font-size:16px;}
.footer-item p{font-size:14px;color:#666;line-height:1.9;}
.copyright{border-top:1px solid #eee;padding-top:20px;font-size:14px;text-align:center;color:#888;}
.tip{margin-top:8px;font-size:13px;color:#aaa;}
.box-form h3{margin-bottom:16px;color:#165DFF;}
.info{color:#999;font-size:14px;margin-bottom:20px;}
.col-6 h3{margin-bottom:18px;color:#111;}

/* ===== 移动端适配 ===== */
@media(max-width:768px){
  .header{padding:12px 0;}
  .header .container{flex-direction:column;align-items:center;gap:12px;}
  .nav ul{flex-wrap:wrap;justify-content:center;gap:8px 18px;}
  .nav a{font-size:15px;}
  .section{padding:44px 0;}
  .banner{padding:36px 0;}
  .banner .container{flex-direction:column;gap:22px;}
  .banner-text h1{font-size:26px;line-height:1.4;}
  .banner-text p{font-size:16px;margin-bottom:22px;}
  .banner-visual img{max-height:220px;object-fit:cover;width:100%;}
  .title{font-size:24px;margin-bottom:26px;}
  .page-banner{padding:34px 0;}
  .page-banner h1{font-size:24px;}
  .content h2{font-size:20px;}
  .card{padding:22px;}
  .article-item{padding:18px;}
  .service-grid,.article-list,.row,.footer-box{grid-template-columns:1fr;gap:18px;}
  .row{gap:22px;}
  .table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;}
  .table th,.table td{white-space:nowrap;font-size:12px;padding:10px 8px;}
  .btn{padding:11px 22px;}
  .footer{padding:34px 0;}
  .footer-box{gap:24px;}
}
@media(max-width:420px){
  .banner-text h1{font-size:23px;}
  .banner-text p{font-size:15px;}
  .nav a{font-size:14px;gap:8px 14px;}
  .title{font-size:22px;}
  .content h2{font-size:19px;}
  .btn{padding:10px 18px;font-size:14px;}
}

/* ===== 表单验证码行对齐 ===== */
.code-row{display:flex;align-items:center;gap:12px;}
.code-input{width:100px;height:40px;padding:8px 10px;border:1px solid #d5dce9;border-radius:6px;font-size:16px;background:#fff;box-sizing:border-box;}
.code-input:focus{outline:none;border-color:#165DFF;box-shadow:0 0 0 3px rgba(22,93,255,.12);}
.code-img{height:40px;width:auto;border:1px solid #d5dce9;border-radius:6px;cursor:pointer;box-sizing:border-box;background:#f0f5ff;}

/* ===== 水晶/玻璃质感提交按钮 ===== */
.btn-crystal{
  position:relative;
  overflow:hidden;
  background:linear-gradient(135deg,rgba(22,93,255,.96),rgba(22,93,255,.72));
  border:1px solid rgba(255,255,255,.55);
  border-radius:8px;
  color:#fff;
  text-shadow:0 1px 1px rgba(0,0,0,.12);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.65),
    inset 0 -2px 5px rgba(255,255,255,.22),
    inset 0 0 12px rgba(255,255,255,.18),
    0 6px 18px rgba(22,93,255,.28);
  transition:transform .2s,box-shadow .2s;
}
.btn-crystal::before{
  content:"";
  position:absolute;
  top:-60%;left:-30%;
  width:45%;height:220%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);
  transform:rotate(22deg);
  pointer-events:none;
}
.btn-crystal:hover{
  transform:translateY(-1px);
  background:linear-gradient(135deg,rgba(22,93,255,.98),rgba(22,93,255,.80));
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.7),
    inset 0 -2px 5px rgba(255,255,255,.25),
    inset 0 0 14px rgba(255,255,255,.2),
    0 8px 22px rgba(22,93,255,.35);
}