.reg{padding-top:34px}
.reg-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:24px;align-items:start}
.reg .card h2{font-size:1.3rem;max-width:none}
.form .hint{color:var(--mute);font-size:.94rem;margin:0 0 18px}
.req{color:#b3261e}
.fld{display:block;margin:0 0 16px}
.fld>span{display:block;font-weight:600;font-size:.92rem;margin-bottom:6px;color:var(--navy)}
.fld small{font-weight:400;color:var(--mute)}
.fld input,.fld select{width:100%;font:inherit;font-size:1.05rem;padding:12px 14px;min-height:50px;border:1.5px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}
.fld input:focus,.fld select:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(25,82,147,.18)}
.fld input[aria-invalid=true]{border-color:#b3261e}
.msg{display:block;color:#b3261e;font-style:normal;font-size:.88rem;margin-top:5px}
.alert{background:#fdecea;border:1px solid #f3b8b3;color:#8a1f17;border-radius:10px;padding:12px 14px;margin:0 0 16px}
.row2{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:12px}
.wide{width:100%;font-size:1.05rem;padding:15px}
.fine{font-size:.82rem;color:var(--mute);margin:14px 0 0}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.side{background:var(--navy);border-color:var(--navy);color:#dfe8f5;position:sticky;top:90px}
.side h2{color:#fff}
.side img{background:#fff;border-radius:50%;padding:4px;margin-bottom:10px}
.side dl{margin:0 0 6px}
.side dl div{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.14)}
.side dt{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--gold-l)}
.side dd{margin:2px 0 0;font-weight:600;color:#fff}
.side a{color:var(--gold-l)}
.side .fine{color:#b9c7da}
.ok{text-align:center;padding:36px 26px}
.ok-ic{display:grid;place-items:center;width:68px;height:68px;border-radius:50%;background:#e3f4e6;color:#1f7a35;font-size:2rem;margin:0 auto 14px}
.ok h2{margin-bottom:10px}
.ref{background:var(--tint);border-radius:14px;padding:16px;margin:18px auto;max-width:340px}
.ref b{display:block;font-family:var(--serif);font-size:2.2rem;letter-spacing:.18em;color:var(--blue);margin-top:2px}
.ref small{display:block;color:var(--mute);font-size:.82rem;margin-top:2px}
.ok-btns{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:6px}
@media (max-width:900px){.reg-grid{grid-template-columns:1fr}.side{position:static;order:-1}}
@media (max-width:480px){.row2{grid-template-columns:1fr}}

/* quản trị */
.adm{padding-top:26px}
.adm-top{display:flex;gap:12px;flex-wrap:wrap;align-items:center;justify-content:space-between;margin-bottom:18px}
.adm-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:20px}
.adm-stats div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.adm-stats b{display:block;font-family:var(--serif);font-size:1.8rem;color:var(--blue);line-height:1.1}
.adm-stats span{font-size:.85rem;color:var(--mute)}
.adm-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.adm-filter input,.adm-filter select{font:inherit;padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;min-height:44px}
.adm-filter input[type=search]{flex:1;min-width:200px}
.adm-tbl{min-width:880px;font-size:.92rem}
.adm-tbl th,.adm-tbl td{padding:10px 12px}
.adm-tbl td.c{text-align:center}
.adm-tbl .ref-c{font-family:var(--serif);font-weight:700;color:var(--blue);letter-spacing:.08em}
.adm-tbl button{background:none;border:0;color:#b3261e;cursor:pointer;font:inherit;text-decoration:underline;padding:4px}
.login{max-width:420px;margin:40px auto}

/* trang tổng hợp thư mời */
.docs3{grid-template-columns:repeat(3,1fr);margin-top:28px}
.docs3 .doc h2{color:var(--navy);margin:12px 0 8px;font-size:1.3rem;max-width:none}
.docs3 .who{font-size:.86rem;color:var(--blue-d);background:var(--tint);border-radius:8px;padding:8px 10px;flex:none;margin:0 0 14px}
.cta-reg{display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-top:28px}
.cta-reg h2{font-size:1.25rem;margin:0 0 4px;max-width:none}
.cta-reg p{margin:0;color:var(--mute);max-width:60ch}
@media (max-width:900px){.docs3{grid-template-columns:1fr}}