/* 英文页面导航栏统一样式 - 覆盖所有外部CSS冲突 */
:root{--ci:#1a6fc4;--cp:#1a9e6e;--ca:#2a8fd4;--ce:#1a9e6e;--bg:#f4f8fc;--gm:linear-gradient(135deg,#1a6fc4,#1a9e6e);--g1:linear-gradient(135deg,#1a6fc4,#0d5a9e)}

/* 隐藏旧#top区域 */
#top{display:none!important}

/* 页面容器 */
html,body{max-width:100%!important;overflow-x:hidden!important}
#center{width:100%!important;max-width:1200px!important;margin:0 auto!important;background:transparent!important;overflow:visible!important}

/* 导航栏主体 */
#nav{clear:none!important;height:64px!important;width:100%!important;max-width:1200px!important;margin:0 auto!important;background:transparent!important;margin-bottom:0!important;overflow:visible!important;position:sticky!important;top:0!important;z-index:100!important;display:flex!important;align-items:center!important;justify-content:flex-start!important;gap:0!important;transition:background .4s ease,box-shadow .4s ease,backdrop-filter .4s ease!important}
#nav.scrolled{background:rgba(244,248,252,.92)!important;backdrop-filter:blur(20px) saturate(1.5)!important;-webkit-backdrop-filter:blur(20px) saturate(1.5)!important;box-shadow:0 4px 30px rgba(26,111,196,.06),inset 0 -1px 0 rgba(255,255,255,.5)!important}
#nav::before{content:''!important;position:absolute!important;bottom:0!important;left:0!important;width:100%!important;height:1px!important;background:var(--gm)!important;opacity:.4!important}

/* 导航栏左侧 - Logo区域 */
#nav-left{display:flex!important;align-items:center!important;padding:0!important;flex-shrink:0!important}
.logo{float:none!important;flex-shrink:0!important}
.logo h1,.logo h1 a{display:none!important}
.top-logo-img{height:44px!important;width:auto!important;display:block!important;filter:drop-shadow(0 2px 8px rgba(26,111,196,.2))!important}

/* 导航栏中间 - 菜单 */
#nav-center{float:none!important;width:auto!important;height:64px!important;margin:0!important;padding:0!important;flex:1!important;display:flex!important;align-items:center!important;justify-content:center!important}
#nav-center ul{display:flex!important;height:64px!important;padding:0!important;justify-content:center!important;gap:0!important;list-style:none!important;align-items:center!important}
#nav-center li{float:none!important;height:40px!important;width:auto!important;flex:none!important;line-height:40px!important;font-size:14px!important;font-weight:500!important;position:relative!important;transition:all .3s ease!important;padding:0 10px!important;white-space:nowrap!important}
#nav-center li::after{content:''!important;position:absolute!important;bottom:0!important;left:50%!important;width:0!important;height:3px!important;background:var(--gm)!important;transition:all .3s ease!important;transform:translateX(-50%)!important;border-radius:3px 3px 0 0!important;box-shadow:0 0 12px rgba(26,111,196,.4)!important}
#nav-center li:hover::after{width:60%!important}

/* 当前页高亮按钮 */
#nav-center li.nav-a-bg{background-image:none!important;background:var(--g1)!important;color:#fff!important;font-weight:600!important;border-radius:8px!important;margin:12px 2px!important;height:34px!important;line-height:34px!important;padding:0 14px!important;box-shadow:0 4px 16px rgba(26,111,196,.25)!important;transition:all .3s ease!important}
#nav-center li.nav-a-bg:hover{box-shadow:0 6px 24px rgba(26,158,110,.3)!important;transform:translateY(-1px)!important}
#nav-center li.nav-a-bg::after{display:none!important}

/* 菜单链接 */
#nav-center li a{display:block!important;width:100%!important;height:100%!important;color:#475569!important;text-decoration:none!important;transition:all .3s ease!important;font-size:14px!important;font-weight:500!important}
#nav-center li:hover a{color:var(--ci)!important}
#nav-center li.nav-a-bg a{color:#fff!important;font-weight:600!important}

/* 导航栏右侧 - 语言选择器 */
#nav-right{display:flex!important;align-items:center!important;padding:0!important;flex-shrink:0!important}
#nav-right select{padding:6px 10px!important;border:1px solid #e2e8f0!important;border-radius:6px!important;font-size:13px!important;color:#475569!important;background:#fff!important;cursor:pointer!important;outline:none!important;transition:all .3s ease!important;white-space:nowrap!important}
#nav-right select:hover{border-color:var(--ci)!important;box-shadow:0 2px 8px rgba(26,111,196,.1)!important}

/* 覆盖a.dh样式 */
a.dh,a.dh:link,a.dh:visited,a.dh:hover,a.dh:active{color:#475569!important;font-size:14px!important;font-weight:500!important;text-decoration:none!important}
a.dh:hover{color:var(--ci)!important}

/* ========== 移动端适配 ========== */
@media (max-width: 768px) {
    html,body{max-width:100%!important;overflow-x:hidden!important}
    #center{max-width:100%!important}
    #nav{height:56px!important;max-width:100%!important;width:100%!important;padding:0 8px!important;gap:0!important;justify-content:flex-start!important}
    #nav-left{padding:0 6px 0 0!important;max-width:none!important;width:auto!important;flex:0 0 auto!important;overflow:hidden!important}
    #nav-left .logo a{display:block!important;gap:0!important}
    #nav-left .logo a span{display:none!important;visibility:hidden!important;width:0!important;height:0!important;overflow:hidden!important}
    .top-logo-img{height:36px!important}
    #nav-center{height:56px!important;flex:1 1 auto!important;min-width:0!important;overflow-x:auto!important;overflow-y:hidden!important;-webkit-overflow-scrolling:touch!important;scrollbar-width:none!important;display:block!important}
    #nav-center::-webkit-scrollbar{display:none!important}
    #nav-center ul{display:flex!important;height:56px!important;gap:0!important;min-width:max-content!important;width:max-content!important;flex-shrink:0!important;margin:0!important;padding:0!important}
    #nav-center li{height:56px!important;line-height:56px!important;font-size:13px!important;padding:0 10px!important}
    #nav-center li.nav-a-bg{margin:11px 2px!important;height:34px!important;line-height:34px!important;padding:0 12px!important}
    #nav-center li a{font-size:13px!important}
    a.dh,a.dh:link,a.dh:visited,a.dh:hover,a.dh:active{font-size:13px!important}
    #nav-right{padding:0 0 0 6px!important;flex:0 0 auto!important;flex-shrink:0!important}
    #nav-right select{padding:4px 8px!important;font-size:11px!important;max-width:110px!important;white-space:nowrap!important;overflow:hidden!important;text-overflow:ellipsis!important}
}

@media (max-width: 480px) {
    #nav{height:52px!important;padding:0 6px!important}
    #nav-left .logo a{display:block!important;gap:0!important}
    #nav-left .logo a span{display:none!important;visibility:hidden!important;width:0!important;height:0!important;overflow:hidden!important}
    .top-logo-img{height:30px!important}
    #nav-center{height:52px!important;display:block!important}
    #nav-center ul{display:flex!important;height:52px!important;width:max-content!important;flex-shrink:0!important}
    #nav-center li{height:52px!important;line-height:52px!important;font-size:12px!important;padding:0 8px!important}
    #nav-center li.nav-a-bg{margin:10px 2px!important;height:32px!important;line-height:32px!important;padding:0 10px!important}
    #nav-center li a{font-size:12px!important}
    a.dh,a.dh:link,a.dh:visited,a.dh:hover,a.dh:active{font-size:12px!important}
    #nav-right{padding:0 0 0 4px!important}
    #nav-right select{padding:3px 5px!important;font-size:10px!important;max-width:95px!important}
}

/* ========== 按钮式语言下拉菜单 ========== */
.lang-switcher{position:relative!important;display:inline-block!important}
.lang-switcher-btn{display:inline-flex!important;align-items:center!important;gap:6px!important;padding:8px 16px!important;background:linear-gradient(135deg,#1a6fc4,#1a9e6e)!important;color:#fff!important;font-size:14px!important;font-weight:600!important;border:none!important;border-radius:8px!important;cursor:pointer!important;transition:all .3s ease!important;box-shadow:0 4px 14px rgba(26,111,196,.25)!important;letter-spacing:.5px!important;min-width:72px!important;justify-content:center!important}
.lang-switcher-btn:hover{transform:translateY(-2px)!important;box-shadow:0 6px 20px rgba(26,158,110,.35)!important}
.lang-switcher-btn::after{content:''!important;width:0!important;height:0!important;border-left:4px solid transparent!important;border-right:4px solid transparent!important;border-top:5px solid #fff!important;transition:transform .3s ease!important}
.lang-switcher.open .lang-switcher-btn::after{transform:rotate(180deg)!important}
.lang-switcher-dropdown{position:absolute!important;top:calc(100% + 8px)!important;right:0!important;min-width:160px!important;background:#fff!important;border-radius:10px!important;box-shadow:0 8px 30px rgba(26,111,196,.15),0 2px 8px rgba(0,0,0,.06)!important;overflow:hidden!important;display:none!important;z-index:1000!important;border:1px solid rgba(26,111,196,.08)!important}
.lang-switcher.open .lang-switcher-dropdown{display:block!important}
.lang-switcher-dropdown a{display:block!important;padding:12px 18px!important;color:#475569!important;font-size:13px!important;font-weight:500!important;text-decoration:none!important;transition:all .2s ease!important;white-space:nowrap!important;border-bottom:1px solid #f1f5f9!important}
.lang-switcher-dropdown a:last-child{border-bottom:none!important}
.lang-switcher-dropdown a:hover{background:linear-gradient(135deg,rgba(26,111,196,.06),rgba(26,158,110,.06))!important;color:#1a6fc4!important;padding-left:24px!important}
.lang-switcher-dropdown a.active{background:linear-gradient(135deg,rgba(26,111,196,.1),rgba(26,158,110,.1))!important;color:#1a6fc4!important;font-weight:600!important}

@media (max-width: 768px) {
    .lang-switcher-btn{padding:6px 12px!important;font-size:12px!important;min-width:60px!important;border-radius:6px!important}
    .lang-switcher-dropdown{min-width:140px!important}
    .lang-switcher-dropdown a{padding:10px 14px!important;font-size:12px!important}
}
@media (max-width: 480px) {
    .lang-switcher-btn{padding:5px 10px!important;font-size:11px!important;min-width:54px!important}
}