/* ============================================================
   nk-header 新页头（2026-10-11 重做，替代 Bootstrap navbar）
   布局：logo 左侧不动 + 两行目录整体靠右（右缘对齐、左缘对齐）
   类名全部独立（nk-*），不受 bootstrap/style.css 干扰
   ============================================================ */
.nk-header{background:#fff;border-bottom:1px solid rgba(0,0,0,.06);position:relative;z-index:999;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.nk-header.nk-fixed{position:fixed;top:0;left:0;right:0}
.container.nk-container{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:10px 12px}
.nk-logo{flex:0 0 auto;line-height:0}
.nk-logo img{width:200px;max-width:100%;height:auto}
.nk-toggle{display:none}
.nk-lang-m{display:none}
.nk-nav{flex:1 1 auto;display:flex;flex-direction:column;align-items:flex-end;min-width:0}
.nk-row1{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:8px 16px}
.nk-row2{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:4px 14px;margin-top:5px;padding-top:5px;border-top:1px dashed rgba(0,0,0,.08);width:100%}
.nk-link{font-size:14px;font-weight:500;color:#2a2a2a;text-decoration:none;white-space:nowrap;position:relative}
.nk-link:hover{color:#B00002}
.nk-link.nk-active{color:#116E63}
.nk-drop{position:relative}
.nk-dropdown{position:absolute;top:100%;left:0;min-width:200px;background:#fff;border:1px solid #eee;box-shadow:0 6px 20px rgba(0,0,0,.08);padding:8px 0;display:none;z-index:1000;border-radius:6px}
.nk-drop:hover .nk-dropdown{display:block}
.nk-dropdown a{display:block;padding:7px 18px;font-size:13px;color:#444;text-decoration:none}
.nk-dropdown a:hover{color:#B00002;background:#f7f7f7}
.nk-sub-tag{font-size:12px;font-weight:600;color:#116E63;white-space:nowrap}
.nk-row2 a{font-size:12px;color:#5a5a5a;text-decoration:none;white-space:nowrap}
.nk-row2 a:hover{color:#B00002}
.nk-lang{display:inline-flex;gap:6px;margin-left:2px}
.nk-lang-btn{font-size:12px;line-height:1;padding:5px 10px;border:1px solid #d5d5d5;border-radius:4px;color:#555;text-decoration:none}
.nk-lang-btn:hover{color:#214C42;border-color:#214C42}
.nk-lang-btn.nk-lang-active{background:#116E63;color:#fff;border-color:#116E63}

/* 移动端（<992px）：汉堡展开，菜单竖排，下拉直接展开 */
@media (max-width: 991.98px){
  .container.nk-container{flex-wrap:wrap;padding:8px 12px}
  .nk-logo{flex:0 0 auto}
  .nk-logo img{width:150px;max-width:100%;height:auto}
  .nk-toggle{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid #ddd;background:#fff;border-radius:6px;font-size:16px;color:#214C42;cursor:pointer;margin-left:auto;flex:0 0 auto}
  .nk-lang-m{display:inline-flex;gap:6px;margin-left:auto;margin-right:10px;flex:0 0 auto;white-space:nowrap}
  .nk-row1 .nk-lang{display:none}
  .nk-nav{display:none;width:100%;flex-direction:column;align-items:stretch;padding:6px 0 10px}
  .nk-nav.nk-open{display:flex}
  .nk-row1{flex-direction:column;align-items:flex-start;gap:10px;padding:10px 0;border-top:1px solid #f0f0f0}
  .nk-row2{flex-direction:column;align-items:flex-start;gap:8px;width:100%;margin-top:8px;padding-top:8px}
  .nk-dropdown{position:static;display:block;box-shadow:none;border:none;padding:2px 0 2px 12px;min-width:0}
  .nk-dropdown a{padding:5px 0}
  .nk-lang{margin-top:4px}
}

/* ===== header-top 顶部信息栏压缩（2026-10-11 测试）===== */
.header-top{padding:6px 0 7px}
.header-top-social span{font-size:13px}
.header-top-social a{width:24px;height:24px;line-height:24px;font-size:13px;margin-left:4px}
.header-top-contact ul{gap:14px}
.header-top-contact ul li{gap:8px;padding-right:14px}
.header-top-contact ul li a{font-size:13px}
.header-top-contact ul li a i{margin-right:4px}
.header-top-contact ul li .cat-number{font-size:13px}
/* header-top 内简繁按钮（桌面移到顶部，时间旁） */
.header-top-contact ul li:last-child{border-right:0;padding-right:0}
.header-top-contact .nk-lang-top{display:flex;gap:6px;align-items:center}
.header-top-contact .nk-lang-top .nk-lang-btn{display:inline-flex;align-items:center;justify-content:center;min-width:42px;padding:1px 10px;border:1px solid rgba(255,255,255,.55);border-radius:4px;font-size:12px;color:#fff;background:transparent;text-decoration:none;line-height:1.7}
.header-top-contact .nk-lang-top .nk-lang-btn.nk-lang-active{background:#fff;color:#116E63;border-color:#fff;font-weight:600}
.header-top-contact .nk-lang-top .nk-lang-btn:hover{background:rgba(255,255,255,.18);color:#fff}

/* ===== 第二行升学通道当前页高亮（2026-10-11 全站推广补充） ===== */
.nk-row2 a.nk-active{color:#116E63;font-weight:600}

/* ===== 桌面端字号/间距定稿（2026-10-11 用户验收） ===== */
@media (min-width: 992px){
  .nk-link{font-size:18px}
  .nk-row1{gap:10px 28px}
  .nk-row2 a{font-size:16px}
  .nk-sub-tag{font-size:16px}
  .nk-row2{gap:8px 18px;margin-top:4px;padding-top:8px}
  .nk-header.nk-fixed .nk-row2{display:none}
}