/* Tyson English – thanh điều hướng & nút Zalo dùng chung */
.te-bar{position:relative;z-index:30;background:linear-gradient(90deg,#00594a,#007a65);color:#fff;font:600 14px/1 "Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",sans-serif}
.te-bar .in{max-width:1100px;margin:0 auto;height:48px;display:flex;align-items:center;gap:12px;padding:0 max(16px,env(safe-area-inset-left,0px))}
.te-bar a{color:#fff;text-decoration:none;display:inline-flex;align-items:center;gap:9px}
.te-logo{width:28px;height:28px;border-radius:8px;background:#fff;display:grid;place-items:center;flex:0 0 28px}
.te-logo svg{width:22px;height:22px}
.te-brand b{font-weight:800;font-size:15px;letter-spacing:.2px}
.te-sep{opacity:.45}.te-page{opacity:.85;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.te-home{margin-left:auto;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);padding:8px 13px;border-radius:10px;white-space:nowrap}
.te-home:hover{background:rgba(255,255,255,.24)}
.te-zalo{position:fixed;right:max(16px,env(safe-area-inset-right,0px));bottom:max(18px,env(safe-area-inset-bottom,0px));z-index:60;display:flex;align-items:center;gap:8px;background:#0068ff;color:#fff;text-decoration:none;font:700 14px/1 "Be Vietnam Pro",system-ui,sans-serif;padding:12px 16px 12px 12px;border-radius:99px;box-shadow:0 8px 22px rgba(0,60,160,.35)}
.te-zalo i{width:28px;height:28px;border-radius:50%;background:#fff;color:#0068ff;display:grid;place-items:center;font-style:normal;font-weight:800;font-size:12px}
@media(max-width:560px){.te-sep,.te-page{display:none}.te-zalo span{display:none}.te-zalo{padding:10px}}
@media print{.te-bar,.te-zalo{display:none}}
body:has(#shell) .te-bar,
body:has(#test:not([hidden])) .te-bar,
body:has(#shell) .te-zalo,
body:has(#test:not([hidden])) .te-zalo,
body:has(.rv) .te-zalo,
body.in-exam .te-zalo,
body:has(.luyen-de-bottom-bar) .te-zalo,
#shell ~ .te-zalo {
  display: none !important;
}