/* ===== 尧章科技 · 移动端导航（全站共享，单点维护） =====
   方案：独立 fixed 浮层汉堡按钮 + 右侧抽屉，不依赖各页现有 nav 结构。
   桌面端隐藏，手机端 (max-width:880px) 显示。深蓝墨玻璃风，与品牌一致。 */
.mn-toggle{
  position:fixed;top:13px;right:14px;z-index:60;
  width:44px;height:44px;border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.08);border-radius:11px;
  display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  cursor:pointer;-webkit-tap-highlight-color:transparent;
}
.mn-toggle span{display:block;width:20px;height:2px;background:#E8EEF8;border-radius:2px;transition:.3s}
.mn-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.mn-toggle.open span:nth-child(2){opacity:0}
.mn-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mn-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:65;opacity:0;visibility:hidden;transition:.3s}
.mn-overlay.show{opacity:1;visibility:visible}

.mn-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(82vw,340px);z-index:70;
  background:rgba(10,16,48,.97);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-left:1px solid rgba(255,255,255,.1);
  transform:translateX(100%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;
}
.mn-drawer.show{transform:translateX(0)}
.mn-drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid rgba(255,255,255,.08)}
.mn-brand{font-weight:800;color:#E8EEF8;font-size:15px}
.mn-close{background:none;border:none;color:#E8EEF8;font-size:30px;line-height:1;cursor:pointer;width:40px;height:40px}
.mn-menu{display:flex;flex-direction:column;padding:8px 0;overflow-y:auto}
.mn-menu a{
  padding:0 22px;min-height:52px;display:flex;align-items:center;
  color:#E8EEF8;font-size:16px;font-weight:600;text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.05);
}
.mn-menu a:active{background:rgba(46,123,232,.20)}
.mn-service{padding:18px 22px;margin-top:auto;border-top:1px solid rgba(255,255,255,.08)}
.mn-service-tip{color:#9FB0CC;font-size:13px;margin-bottom:10px}
.mn-service img{width:150px;height:150px;border-radius:12px;display:block;background:#fff}
/* 双码并排：添加微信（企微）+ 在线客服 */
.mn-qr-row{display:flex;gap:12px;justify-content:center}
.mn-qr-item{flex:1;max-width:132px;text-align:center}
.mn-qr-item img{width:100%;height:auto;aspect-ratio:1/1;border-radius:12px;display:block;background:#fff;margin:0 auto}
.mn-qr-item .qr-name{color:#9FB0CC;font-size:11px;margin-top:6px;line-height:1.4}

@media(max-width:880px){
  .mn-toggle{display:flex}
  .nav-cta{display:none!important}
  /* 触控与可读性优化 */
  .fact span,.footer .small{font-size:12px}
  .tag{font-size:15px}
  .mn-menu a{min-height:52px}
}