/* Cổng đăng ký đọc ngành: khi chưa đăng ký, ẩn nội dung ngành (vẫn có trong HTML cho SEO) */
html.nd-gated .ndn-facts,html.nd-gated .ndn-toc,html.nd-gated #ndn-gd,html.nd-gated .ndn-gdintro,html.nd-gated .ndn-sec,
html.nd-gated .ndn-embed,html.nd-gated .ndn-cta,html.nd-gated .ndn-save,html.nd-gated .ndn-body,html.nd-gated #nd12-sosanh,html.nd-gated #ndc-bar{display:none!important}
.ndg{padding:8px 0 40px}
.ndg-card{max-width:560px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 20px;box-shadow:0 10px 30px rgba(122,30,43,.08)}
.ndg-h{font-family:var(--font-head);font-weight:700;font-size:22px;color:var(--maroon);margin-bottom:6px}
.ndg-d{font-size:14.5px;color:var(--gray);margin:0 0 16px;line-height:1.55}
.ndg-f{margin-bottom:14px}
.ndg-f label{display:block;font-weight:700;font-size:14px;margin-bottom:6px;color:var(--ink)}
.ndg-f input,.ndg-f select{width:100%;box-sizing:border-box;min-height:46px;border:1.5px solid var(--line);border-radius:12px;padding:10px 12px;font:inherit;font-size:15px;background:#fff;margin-bottom:6px}
.ndg-f input:focus,.ndg-f select:focus{outline:none;border-color:var(--maroon)}
.ndg-f.bad input,.ndg-f.bad select{border-color:#C0392B}
.ndg-err{color:#C0392B;font-size:13px;min-height:0}
.ndg-vt{display:flex;flex-wrap:wrap;gap:8px}
.ndg-vt button{flex:1 1 auto;min-height:44px;border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;font:inherit;font-weight:600;font-size:14px;cursor:pointer;color:var(--ink)}
.ndg-vt button.on{background:var(--maroon);border-color:var(--maroon);color:#fff}
.ndg-go{width:100%;min-height:50px;font-size:16px;margin-top:4px}
.ndg-pv{font-size:12.5px;color:var(--gray);margin:12px 0 0;line-height:1.5}
.ndg-pv a{color:var(--maroon)}