:root{
  --navy:#093D79; --navy-2:#0c3466; --blue:#14549A; --blue-soft:#e8f0fa;
  --gold:#F2CB32; --gold-ink:#7a5c00;
  --red:#C9292E; --red-soft:#fdecec;
  --bg:#F2F5F9; --card:#ffffff; --text:#20334C; --muted:#5b6b82;
  --line:#dde4ee; --ok:#1f8a4c; --ok-soft:#e8f6ee;
  --radius:14px; --radius-sm:10px;
  --shadow:0 2px 10px rgba(9,61,121,.06), 0 1px 3px rgba(9,61,121,.08);
  --shadow-lg:0 10px 30px rgba(9,61,121,.12);
  --maxw:620px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px; line-height:1.55; -webkit-font-smoothing:antialiased;
}
a{color:var(--blue)}
img{max-width:100%}

/* ---------- Header ---------- */
.topbar{
  background:linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 100%);
  color:#fff; padding:22px 16px 26px; text-align:center;
  border-bottom:4px solid var(--gold);
}
.topbar .logo{width:92px;height:92px;object-fit:contain;filter:drop-shadow(0 4px 10px rgba(0,0,0,.25))}
.topbar .org{font-size:13px;letter-spacing:1px;font-weight:700;margin-top:10px;opacity:.95}
.topbar .channel{
  display:inline-block;margin-top:8px;font-size:12px;font-weight:600;letter-spacing:.5px;
  background:rgba(242,203,50,.16);color:var(--gold);border:1px solid rgba(242,203,50,.4);
  padding:4px 12px;border-radius:999px;
}
.topbar h1{font-size:17px;margin:12px auto 0;max-width:560px;font-weight:800;line-height:1.4;letter-spacing:.3px;color:#fff}
@media(min-width:520px){.topbar h1{font-size:20px}}
@media(max-width:360px){.topbar h1{font-size:15px}}

/* ---------- Layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin:14px 0}
.card h2{font-size:16px;margin:0 0 4px;color:var(--navy)}
.card .sub{font-size:13px;color:var(--muted);margin:0 0 14px}

/* ---------- Form ---------- */
.field{margin:14px 0}
label.lbl{display:block;font-weight:600;font-size:14.5px;margin-bottom:6px}
label.lbl .req{color:var(--red);font-weight:700}
.hint{font-size:12.5px;color:var(--muted);margin-top:5px;line-height:1.45}
input[type=text],input[type=number],input[type=tel],input[type=password],input[type=datetime-local],select,textarea{
  width:100%;padding:12px 13px;font-size:16px;color:var(--text);
  border:1.5px solid var(--line);border-radius:var(--radius-sm);background:#fcfdff;
  font-family:inherit;transition:border-color .15s,box-shadow .15s;
}
textarea{min-height:130px;resize:vertical;line-height:1.6}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(20,84,154,.15);background:#fff}
select{appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235b6b82' stroke-width='2.5'><path d='M6 9l6 6 6-6'/></svg>");background-repeat:no-repeat;background-position:right 13px center;padding-right:38px}

/* segmented choice */
.seg{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.seg.one-col{grid-template-columns:1fr}
.seg label{
  display:flex;align-items:center;gap:10px;cursor:pointer;
  border:1.5px solid var(--line);border-radius:var(--radius-sm);padding:13px;background:#fcfdff;
  font-size:14.5px;font-weight:600;transition:all .12s;
}
.seg label:hover{border-color:var(--blue)}
.seg input{accent-color:var(--navy);width:19px;height:19px;flex:none}
.seg input:checked + span{color:var(--navy)}
.seg label:has(input:checked){border-color:var(--navy);background:var(--blue-soft);box-shadow:0 0 0 2px rgba(9,61,121,.08)}

.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:460px){.two{grid-template-columns:1fr}}

/* notices */
.note{border-radius:var(--radius-sm);padding:12px 14px;font-size:13px;line-height:1.55;margin:12px 0}
.note-info{background:var(--blue-soft);border:1px solid #cfe0f3;color:#134b86}
.note-warn{background:#fff7e0;border:1px solid #f0dca0;color:var(--gold-ink)}
.note-legal{background:#f7f9fc;border:1px solid var(--line);color:var(--muted);font-size:12.5px}
.note-err{background:var(--red-soft);border:1px solid #f1c2c3;color:#9a2024}
.note b{color:inherit}

/* commitment checkbox */
.commit{display:flex;gap:11px;align-items:flex-start;background:#f7f9fc;border:1.5px solid var(--line);border-radius:var(--radius-sm);padding:13px}
.commit input{width:20px;height:20px;accent-color:var(--navy);flex:none;margin-top:1px}
.commit label{font-size:13px;line-height:1.55}

/* uploads */
.drop{border:1.5px dashed #b9c6da;border-radius:var(--radius-sm);padding:18px;text-align:center;background:#fafcff;cursor:pointer;transition:all .12s}
.drop:hover,.drop.drag{border-color:var(--blue);background:var(--blue-soft)}
.drop .ic{font-size:26px}
.drop .t{font-weight:600;font-size:14px;margin-top:4px}
.drop .s{font-size:12px;color:var(--muted);margin-top:3px}
.filelist{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.fileitem{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;padding:9px 11px;background:#fff;font-size:13px}
.fileitem .meta{flex:1;min-width:0}
.fileitem .nm{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fileitem .sz{color:var(--muted);font-size:11.5px}
.fileitem .rm{border:none;background:var(--red-soft);color:var(--red);border-radius:7px;padding:6px 10px;font-weight:700;cursor:pointer;flex:none}
.fileitem.bad{border-color:#f1c2c3;background:var(--red-soft)}
.fileitem .err{color:var(--red);font-size:11.5px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;
  background:var(--navy);color:#fff;border:none;border-radius:var(--radius-sm);
  padding:15px;font-size:16.5px;font-weight:700;cursor:pointer;transition:background .15s,transform .05s;font-family:inherit}
.btn:hover{background:var(--navy-2)}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-ghost{background:#fff;color:var(--navy);border:1.5px solid var(--navy)}
.btn-ghost:hover{background:var(--blue-soft)}

.cf-turnstile{margin:6px 0}

/* mã xác nhận */
.captcha{margin-top:16px}
.captcha-row{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}
.captcha-row img{border:1.5px solid var(--line);border-radius:10px;background:#f4f7fb;display:block}
.captcha-btn{border:1.5px solid var(--line);background:#fff;color:var(--navy);border-radius:10px;
  padding:0 14px;height:48px;font-size:14px;font-weight:700;cursor:pointer;font-family:inherit}
.captcha-btn:hover{border-color:var(--blue);background:var(--blue-soft)}
#captcha_answer{text-transform:uppercase;letter-spacing:4px;font-weight:700;font-family:ui-monospace,Menlo,Consolas,monospace;max-width:260px}
#captcha_answer::placeholder{text-transform:none;letter-spacing:0;font-weight:400;font-family:inherit;font-size:15px}

/* footer */
.foot{text-align:center;color:var(--muted);font-size:12px;padding:22px 16px 34px;line-height:1.6}

/* confirm page */
.confirm-ic{width:76px;height:76px;border-radius:50%;background:var(--ok-soft);display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.confirm-ic svg{width:40px;height:40px;stroke:var(--ok)}
.code-box{background:var(--navy);color:#fff;border-radius:var(--radius);padding:18px;text-align:center;margin:16px 0}
.code-box .l{font-size:12px;opacity:.85;letter-spacing:.5px}
.code-box .c{font-size:28px;font-weight:800;letter-spacing:2px;margin-top:4px;font-family:ui-monospace,Menlo,Consolas,monospace}

.spin{width:18px;height:18px;border:2.5px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.hidden{display:none !important}