.nt-mobile-frame {
  width: min(100%, 860px);
  min-height: 100dvh;
  margin: 0 auto;
  background:
    linear-gradient(180deg, rgba(255,255,255,.48), rgba(255,255,255,0) 160px),
    var(--nt-bg);
  position: relative;
  box-shadow: 0 0 0 1px rgba(17,24,39,.08), 0 30px 90px rgba(17,24,39,.22);
  display: flex;
  flex-direction: column;
  border-left: 1px solid rgba(17,24,39,.12);
  border-right: 1px solid rgba(17,24,39,.12);
}
.nt-topbar {
  color: var(--nt-black);
  padding: 11px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: 74px;
}
.nt-glassbar {
  background: linear-gradient(180deg, rgba(255,252,247,.78), rgba(255,252,247,.56));
  backdrop-filter: blur(18px) saturate(1.35);
  -webkit-backdrop-filter: blur(18px) saturate(1.35);
  border-bottom: 1px solid rgba(17,24,39,.22);
  box-shadow: 0 12px 28px rgba(17,24,39,.08);
}
.nt-glassbar:before {
  content:"";
  position:absolute;
  left:0; right:0; top:0;
  height:3px;
  background: linear-gradient(90deg, var(--nt-red), transparent 28%, rgba(17,24,39,.12) 50%, transparent 72%, var(--nt-red));
  opacity:.9;
}
.nt-logo-wrap { display:flex; align-items:center; gap:10px; min-width:0; }
.nt-brand-lockup { min-width:0; }
.nt-brand-icon {
  width: 48px;
  height: 52px;
  object-fit: contain;
  display:block;
  filter: drop-shadow(0 10px 14px rgba(17,24,39,.22));
}
.nt-brand-copy { display:grid; gap:2px; min-width:0; }
.nt-brand-copy strong {
  display:block;
  font-style: italic;
  font-weight: 950;
  line-height: .95;
  font-size: 23px;
  letter-spacing: -.05em;
  color: var(--nt-navy);
}
.nt-brand-copy small {
  display:block;
  color:#5D6B7C;
  font-family: var(--nt-font-mono);
  font-size: 8.5px;
  line-height:1.1;
  letter-spacing:.16em;
  text-transform: uppercase;
  font-weight: 950;
  white-space: nowrap;
}
.nt-logo-img { width: 186px; max-width: 54vw; height:auto; display:block; filter: drop-shadow(0 10px 16px rgba(0,0,0,.18)); }
.nt-immunity {
  flex: 0 0 auto;
  display:flex;
  align-items:center;
  gap:6px;
  background: rgba(255, 245, 171, .72);
  border:1px solid rgba(17,24,39,.38);
  box-shadow: 3px 3px 0 rgba(17,24,39,.92);
  border-radius: var(--nt-radius);
  padding: 9px 10px;
  font-size: 10px;
  font-family: var(--nt-font-mono);
  font-weight:950;
  color:var(--nt-navy);
  text-transform: uppercase;
  letter-spacing: .04em;
  white-space: nowrap;
}
.nt-immunity strong { color: var(--nt-black); }
.nt-main { flex:1; overflow-y:auto; padding: 18px 18px 92px; }
.nt-card {
  background: var(--nt-panel);
  border: 1px solid var(--nt-border-strong);
  border-radius: var(--nt-radius);
  box-shadow: var(--nt-shadow-hard-soft);
}
.nt-card + .nt-card { margin-top: 18px; }
.nt-card-pad { padding: 18px; }
.nt-alert {
  display:flex;
  gap: 10px;
  align-items:flex-start;
  background: rgba(23,191,174,.055);
  border:1px solid rgba(23,191,174,.24);
  color:#263142;
  border-radius: var(--nt-radius);
  padding: 13px;
  font-size: 12.5px;
  line-height:1.45;
  font-weight:750;
}
.nt-kicker {
  display:inline-flex;
  gap:7px;
  align-items:center;
  padding:7px 10px;
  border:1px solid rgba(23,191,174,.20);
  border-radius: var(--nt-radius);
  background: rgba(23,191,174,.065);
  color: var(--nt-red-dark);
  font-size:10px;
  line-height:1;
  letter-spacing:.12em;
  font-weight:950;
  text-transform:uppercase;
  font-family: var(--nt-font-mono);
}
.nt-view-title {
  margin: 12px 0 8px;
  font-family: var(--nt-font-display);
  font-size: 26px;
  line-height: .98;
  letter-spacing: -.04em;
  font-weight: 900;
  color: var(--nt-navy);
}
.nt-view-title span { color: var(--nt-red); }
.nt-view-lead { color: var(--nt-slate); font-size: 13px; line-height:1.55; margin:0; }
.nt-section-title {
  margin: 0 0 12px;
  color: var(--nt-navy);
  font-size: 11px;
  font-family: var(--nt-font-mono);
  text-transform: uppercase;
  letter-spacing: .12em;
  font-weight: 950;
}
.nt-field { margin-top: 16px; }
.nt-label { display:block; font-size:10px; text-transform:uppercase; letter-spacing:.12em; color:#415066; font-weight:950; font-family: var(--nt-font-mono); margin-bottom:8px; }
.nt-textarea, .nt-input, .nt-select {
  width:100%;
  border:1px solid rgba(17,24,39,.72);
  background: rgba(255,255,255,.92);
  border-radius: var(--nt-radius);
  padding: 14px;
  color: var(--nt-black);
  outline:none;
  transition:.18s ease;
  font-size:14px;
  box-shadow: var(--nt-shadow-hard-soft);
}
.nt-textarea { min-height: 118px; resize: vertical; line-height:1.55; font-family: var(--nt-font-mono); }
.nt-textarea:focus, .nt-input:focus, .nt-select:focus { border-color: var(--nt-red); box-shadow: 4px 4px 0 rgba(23,191,174,.74), 0 0 0 4px rgba(23,191,174,.08); }
.nt-grid-2 { display:grid; grid-template-columns: 1fr 1fr; gap:14px; }
.nt-upload-box {
  border: 1.5px dashed rgba(17,24,39,.48);
  border-radius: var(--nt-radius);
  padding: 26px 16px;
  text-align:center;
  background: rgba(255,255,255,.78);
  transition: .18s ease;
  box-shadow: var(--nt-shadow-hard-soft);
}
.nt-upload-box:hover { border-color: var(--nt-red); background: rgba(23,191,174,.035); }
.nt-upload-box strong { display:block; font-size:13px; color:var(--nt-navy); }
.nt-upload-box span { display:block; font-size:11px; color: var(--nt-muted); margin-top:5px; }
.nt-img-preview { max-height: 180px; object-fit: contain; border-radius: var(--nt-radius); border:1px solid var(--nt-border); background:#fff; display:block; margin:0 auto; }
.nt-btn {
  border:0;
  border-radius: var(--nt-radius);
  padding: 14px 16px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-weight:950;
  letter-spacing:.075em;
  text-transform:uppercase;
  font-size:12px;
  font-family: var(--nt-font-mono);
  transition: transform .15s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.nt-btn:active { transform: translate(2px,2px); box-shadow:none!important; }
.nt-btn--primary { width:100%; background: var(--nt-red); color:#fff; box-shadow: var(--nt-shadow-hard-soft); border:1px solid var(--nt-red-dark); }
.nt-btn--primary:hover { background:var(--nt-teal-dark); }
.nt-btn--dark { background: var(--nt-navy); color:#fff; box-shadow: 4px 4px 0 rgba(17,24,39,.42); border:1px solid var(--nt-navy); }
.nt-btn--ghost { background:rgba(255,255,255,.86); color:var(--nt-black); border:1px solid var(--nt-border-strong); box-shadow: 3px 3px 0 rgba(17,24,39,.16); }
.nt-btn--small { padding:9px 11px; font-size:10px; }
.nt-btn-wide { width:100%; }
.nt-quick-grid { display:grid; grid-template-columns: 1fr; gap:14px; margin-top:14px; }
.nt-case-chip {
  text-align:left;
  background:rgba(255,255,255,.90);
  border:1px solid rgba(17,24,39,.82);
  border-radius: var(--nt-radius);
  padding: 14px;
  min-height: 84px;
  transition:.18s ease;
  box-shadow: var(--nt-shadow-hard-soft);
}
.nt-case-chip:hover { border-color: var(--nt-red); background: var(--nt-cream); transform: translateY(-1px); }
.nt-case-chip strong { display:block; font-size:14px; line-height:1.15; color:var(--nt-navy); }
.nt-case-chip small { display:block; margin-top:4px; color: #738196; font-family:var(--nt-font-mono); font-size:9px; letter-spacing:.09em; text-transform:uppercase; font-weight:950; }
.nt-case-chip span { display:block; margin-top:10px; color:var(--nt-red); font-size:10px; letter-spacing:.08em; text-transform:uppercase; font-weight:950; }
.nt-system-row { display:flex; justify-content:space-between; gap:10px; padding:10px 0; border-bottom:1px solid rgba(15,23,42,.08); font-size:12px; }
.nt-system-row span { color: var(--nt-slate); }
.nt-system-row strong { text-align:right; }
.nt-badge { display:inline-flex; align-items:center; gap:6px; min-height:26px; border-radius: var(--nt-radius); padding:6px 9px; font-size:10px; text-transform:uppercase; letter-spacing:.08em; font-weight:950; font-family: var(--nt-font-mono); border:1px solid rgba(17,24,39,.2); }
.nt-badge--red { background:rgba(23,191,174,.10); color: var(--nt-red-dark); }
.nt-badge--green { background:rgba(4,120,87,.10); color: var(--nt-green); }
.nt-badge--dark { background:rgba(17,24,39,.08); color:var(--nt-black); }
.nt-risk-block { background: linear-gradient(145deg, #0B1220, #1F2937); color:#fff; border-radius: var(--nt-radius); padding:18px; overflow:hidden; position:relative; }
.nt-risk-block:after { content:""; position:absolute; right:-36px; top:-42px; width:130px; height:130px; border-radius:999px; border:22px solid rgba(23,191,174,.25); }
.nt-risk-score { font-size:56px; line-height:.9; font-weight:950; letter-spacing:-.07em; }
.nt-risk-score span { font-size:18px; color:#CBD5E1; }
.nt-list { display:grid; gap:9px; margin:12px 0 0; padding:0; list-style:none; }
.nt-list li { display:flex; gap:10px; align-items:flex-start; background:transparent; border:0; border-radius: var(--nt-radius); padding:4px 0; font-size:13px; line-height:1.5; }
.nt-list li b { color:var(--nt-red); min-width:16px; }
.nt-tabbar {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: min(100%, 860px);
  height: calc(72px + var(--nt-safe-bottom));
  padding-bottom: var(--nt-safe-bottom);
  z-index: 60;
  background: rgba(17, 26, 42, .96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display:flex;
  border-top:1px solid rgba(255,255,255,.12);
  box-shadow:0 -18px 38px rgba(17,24,39,.24);
}
.nt-tabbar button {
  flex:1;
  border:0;
  background:transparent;
  color:#CBD5E1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  font-size:10px;
  text-transform:uppercase;
  letter-spacing:.08em;
  font-family: var(--nt-font-mono);
  font-weight:950;
  position:relative;
}
.nt-tabbar button.active { background: var(--nt-bg-soft); color:var(--nt-black); border-top:3px solid var(--nt-red); }
.nt-tabbar .nt-tab-icon { font-size:20px; line-height:1; }
.nt-tab-count { position:absolute; top:8px; right:28%; min-width:16px; height:16px; border-radius:999px; background:var(--nt-red); color:#fff; display:grid; place-items:center; font-size:8px; }
.nt-toast {
  position: fixed;
  left: 50%;
  bottom: calc(84px + var(--nt-safe-bottom));
  transform: translateX(-50%);
  width: min(92vw, 520px);
  background: rgba(17, 26, 42, .96);
  color:#fff;
  border:1px solid rgba(255,255,255,.14);
  border-radius: var(--nt-radius);
  box-shadow: var(--nt-shadow);
  padding: 13px 14px;
  z-index: 90;
  font-size: 12px;
  line-height:1.45;
}
.nt-country-row { border-bottom:1px solid rgba(17,24,39,.18); }
.nt-country-row button { width:100%; border:0; background:rgba(255,255,255,.78); padding:15px 12px; display:flex; justify-content:space-between; align-items:center; font-weight:950; font-size:12px; text-transform:uppercase; font-family: var(--nt-font-mono); letter-spacing:.04em; }
.nt-country-body { padding: 12px 13px; background: var(--nt-cream); font-size:12px; line-height:1.5; color:#263142; }
.nt-sim-chat { background:#fff; border:1px solid var(--nt-border-strong); border-radius: var(--nt-radius); padding:16px; box-shadow: var(--nt-shadow-hard-soft); }
.nt-chat-bubble { background:#F1F5F9; border:1px solid rgba(17,24,39,.12); border-radius: var(--nt-radius); padding:14px; font-size:13px; line-height:1.45; margin: 12px 0; }
.nt-choice { width:100%; text-align:left; border:1px solid var(--nt-border-strong); border-radius: var(--nt-radius); background:#fff; padding:13px; margin-top:9px; font-weight:850; font-size:12px; }
.nt-choice:hover { border-color:var(--nt-red); background:rgba(23,191,174,.04); }
.nt-honeypot { position:absolute!important; left:-10000px!important; top:auto!important; width:1px!important; height:1px!important; overflow:hidden!important; }
@media (min-width: 620px) { .nt-quick-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) {
  .nt-topbar { padding:10px 12px; min-height: 66px; }
  .nt-brand-icon { width:40px; height:44px; }
  .nt-brand-copy strong { font-size: 20px; }
  .nt-brand-copy small { font-size: 7.2px; letter-spacing:.11em; max-width: 164px; overflow:hidden; text-overflow:ellipsis; }
  .nt-immunity { font-size:8.5px; padding:7px 8px; gap:4px; }
  .nt-immunity span:nth-child(2) { display:none; }
  .nt-view-title { font-size:25px; }
  .nt-grid-2 { grid-template-columns:1fr; }
  .nt-main { padding: 15px 14px 90px; }
}

/* Sprint 6 · Safe URL evidence */
.nt-url-evidence-card {
  border-color: rgba(31, 42, 58, 0.18);
  background: linear-gradient(180deg, rgba(255,255,255,0.94), rgba(250,248,244,0.92));
}

.nt-url-evidence-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.nt-url-evidence-item {
  border: 1px solid rgba(31, 42, 58, 0.16);
  background: rgba(255,255,255,0.72);
  padding: 14px;
  box-shadow: 4px 4px 0 rgba(31, 42, 58, 0.08);
}

.nt-url-evidence-head strong {
  display: block;
  font-family: var(--nt-font-display);
  font-size: 1rem;
  letter-spacing: .01em;
  color: var(--nt-navy);
}

.nt-url-evidence-head small {
  display: block;
  margin-top: 4px;
  color: var(--nt-muted);
  font-size: .78rem;
}

.nt-url-risk {
  min-width: 56px;
  text-align: center;
  border: 1px solid rgba(31, 42, 58, 0.2);
  padding: 6px 8px;
  font-family: var(--nt-font-mono);
  font-weight: 800;
  background: rgba(31, 42, 58, 0.04);
}

.nt-url-risk.high { color: var(--nt-red); background: rgba(231, 0, 18, 0.08); border-color: rgba(231, 0, 18, 0.28); }
.nt-url-risk.medium { color: #9a6b00; background: rgba(255, 204, 0, 0.16); border-color: rgba(181, 123, 0, 0.24); }
.nt-url-risk.low { color: #0f7a4a; background: rgba(15, 122, 74, 0.08); border-color: rgba(15, 122, 74, 0.22); }

.nt-url-title {
  margin: 10px 0 0;
  color: var(--nt-slate);
  font-size: .92rem;
  line-height: 1.45;
}

.nt-url-tags {
  margin-top: 10px;
  justify-content: flex-start;
}

.nt-safe-note {
  margin: 14px 0 0;
  color: var(--nt-muted);
  font-size: .82rem;
  line-height: 1.45;
  border-top: 1px dashed rgba(31, 42, 58, 0.18);
  padding-top: 12px;
}

/* Sprint 11 · Cola y turno de espera */
.nt-queue-status-card {
  position: relative;
  z-index: 3;
  margin-top: 1rem;
  padding: .9rem 1rem;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 1rem;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(12px);
  color: #fff;
  display: grid;
  gap: .2rem;
  text-align: center;
  box-shadow: 0 18px 60px rgba(0,0,0,.22);
}
.nt-queue-status-card span {
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  opacity: .76;
}
.nt-queue-status-card strong {
  font-size: 1.1rem;
  line-height: 1.15;
}
.nt-queue-status-card small {
  opacity: .78;
  font-size: .78rem;
}

/* Sprint 16 · Public UX completion */
.nt-pill b{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:18px;
  height:18px;
  padding:0 5px;
  border-radius:999px;
  background:rgba(185,28,28,.12);
  color:#991b1b;
  font-size:11px;
  margin-left:4px;
}
.nt-case-chip.completed{
  border-color:rgba(16,185,129,.45);
  background:linear-gradient(135deg,rgba(236,253,245,.95),rgba(255,255,255,.95));
}
.nt-case-chip small{
  display:block;
  margin-top:6px;
  color:#64748b;
  font-size:11px;
  line-height:1.25;
}
.nt-progress--cases{
  margin-top:14px;
}
.nt-tool-overlay{
  position:fixed;
  inset:0;
  z-index:90;
  background:rgba(5,10,20,.55);
  backdrop-filter:blur(10px);
  display:flex;
  align-items:flex-end;
  justify-content:center;
  padding:18px 12px 92px;
}
.nt-tool-panel{
  width:min(520px,100%);
  max-height:82vh;
  overflow:auto;
  border-radius:28px;
  border:1px solid rgba(15,23,42,.12);
  background:linear-gradient(180deg,rgba(255,255,255,.98),rgba(248,250,252,.98));
  box-shadow:0 28px 90px rgba(2,6,23,.38);
  padding:18px;
}
.nt-tool-head h2{
  margin:3px 0 0;
  color:#0f172a;
  letter-spacing:-.03em;
}
.nt-icon-btn{
  width:38px;
  height:38px;
  border-radius:999px;
  border:1px solid rgba(15,23,42,.12);
  background:#fff;
  color:#0f172a;
  font-size:24px;
  line-height:1;
}
.nt-tool-body{
  margin-top:14px;
}
.nt-empty-state{
  padding:18px;
  border:1px dashed rgba(100,116,139,.35);
  border-radius:18px;
  background:rgba(248,250,252,.75);
  color:#64748b;
}
.nt-history-item,
.nt-alert-card,
.nt-report-kit{
  border:1px solid rgba(15,23,42,.1);
  border-radius:18px;
  padding:14px;
  background:#fff;
  box-shadow:0 10px 28px rgba(15,23,42,.06);
  margin-top:10px;
}
.nt-history-item{
  display:flex;
  gap:12px;
  justify-content:space-between;
  align-items:flex-start;
}
.nt-history-item small{
  display:block;
  color:#64748b;
  margin-top:3px;
  font-size:11px;
}
.nt-history-item p,
.nt-alert-card p,
.nt-report-kit p{
  margin:8px 0 0;
  color:#334155;
  font-size:13px;
  line-height:1.45;
}
.nt-report-kit ul{
  margin:8px 0 0 18px;
  padding:0;
  color:#334155;
  font-size:13px;
  line-height:1.45;
}
.nt-report-copy{
  margin-top:12px;
  min-height:160px;
  font-size:12px;
  background:#f8fafc;
}
.nt-check-row{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:12px;
  margin-top:8px;
  border-radius:16px;
  background:#fff;
  border:1px solid rgba(15,23,42,.08);
  color:#334155;
  font-size:13px;
  line-height:1.4;
}
.nt-check-row input{
  margin-top:2px;
  accent-color:#b91c1c;
}
.nt-guide-list{
  display:grid;
  gap:8px;
  margin:12px 0 0 18px;
  padding:0;
  color:#334155;
  font-size:13px;
  line-height:1.45;
}
.nt-alert-card strong{
  display:block;
  color:#0f172a;
}
.nt-country-body .nt-btn{
  margin-top:10px;
}
@media (min-width: 720px){
  .nt-tool-overlay{ align-items:center; padding:24px; }
  .nt-tool-panel{ max-height:78vh; }
}

/* Sprint 18 · Gamified scenario modal */
body.nt-modal-open{ overflow:hidden; }
.nt-gamified-note{
  background:linear-gradient(135deg,rgba(255,255,255,.95),rgba(248,250,252,.92));
}
.nt-scenario-overlay{
  position:fixed;
  inset:0;
  z-index:110;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:18px;
  background:radial-gradient(circle at 50% 0%,rgba(23,191,174,.16),transparent 36%),rgba(5,10,20,.68);
  backdrop-filter:blur(12px);
}
.nt-scenario-modal{
  width:min(760px,100%);
  max-height:calc(100vh - 34px);
  overflow:auto;
  background:linear-gradient(180deg,rgba(255,255,255,.99),rgba(250,248,244,.99));
  border:1px solid rgba(15,23,42,.22);
  box-shadow:16px 16px 0 rgba(15,23,42,.95),0 32px 100px rgba(2,6,23,.42);
  border-top:6px solid var(--nt-red);
  padding:18px;
}
.nt-scenario-modal-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:14px;
  border-bottom:1px solid rgba(15,23,42,.12);
  padding-bottom:14px;
}
.nt-scenario-modal-head h2{
  margin:4px 0;
  font-size:clamp(22px,4.5vw,34px);
  letter-spacing:-.045em;
  color:var(--nt-black);
}
.nt-scenario-modal-head p{
  margin:0;
  color:#64748b;
  font-weight:800;
  font-size:12px;
}
.nt-scenario-stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
  margin-top:14px;
}
.nt-scenario-stats div{
  border:1px solid rgba(15,23,42,.16);
  background:#fff;
  padding:11px 12px;
  box-shadow:4px 4px 0 rgba(15,23,42,.12);
}
.nt-scenario-stats span{
  display:block;
  font-family:var(--nt-font-mono);
  font-size:9px;
  text-transform:uppercase;
  letter-spacing:.1em;
  color:#64748b;
  font-weight:950;
}
.nt-scenario-stats strong{
  display:block;
  margin-top:4px;
  color:var(--nt-black);
  font-size:16px;
}
.nt-scenario-progress{ margin:14px 0 16px; }
.nt-scenario-case{
  border:1px dashed rgba(15,23,42,.25);
  background:rgba(255,255,255,.66);
  padding:14px;
}
.nt-scenario-case p{
  margin:10px 0 0;
  color:#475569;
  line-height:1.45;
}
.nt-scenario-question{
  margin-top:14px;
  font-size:15px;
  font-weight:850;
  background:linear-gradient(135deg,#F8FAFC,#EEF2F7);
}
.nt-scenario-choices{
  display:grid;
  gap:10px;
  margin-top:14px;
}
.nt-scenario-choice{
  width:100%;
  display:grid;
  grid-template-columns:36px 1fr;
  gap:12px;
  align-items:center;
  text-align:left;
  border:1px solid rgba(15,23,42,.22);
  background:#fff;
  color:var(--nt-black);
  padding:12px;
  box-shadow:5px 5px 0 rgba(15,23,42,.10);
  font-weight:850;
  cursor:pointer;
  transition:transform .14s ease,border-color .14s ease,background .14s ease;
}
.nt-scenario-choice:hover{ transform:translateY(-1px); border-color:var(--nt-red); }
.nt-scenario-choice b{
  width:34px;
  height:34px;
  display:grid;
  place-items:center;
  border-radius:999px;
  background:#0F172A;
  color:#fff;
  font-family:var(--nt-font-mono);
}
.nt-scenario-choices.is-answered .nt-scenario-choice{ opacity:.68; cursor:default; }
.nt-scenario-choices.is-answered .nt-scenario-choice:hover{ transform:none; }
.nt-scenario-choice.correct{
  opacity:1!important;
  border-color:#16A34A;
  background:linear-gradient(135deg,rgba(220,252,231,.95),#fff);
}
.nt-scenario-choice.correct b{ background:#16A34A; }
.nt-scenario-choice.wrong{
  opacity:1!important;
  border-color:var(--nt-red);
  background:linear-gradient(135deg,rgba(254,226,226,.96),#fff);
}
.nt-scenario-choice.wrong b{ background:var(--nt-red); }
.nt-scenario-feedback{
  margin-top:14px;
  border:1px solid rgba(23,191,174,.22);
  background:rgba(254,242,242,.9);
  padding:14px;
  line-height:1.45;
}
.nt-scenario-feedback.is-correct{
  border-color:rgba(22,163,74,.28);
  background:rgba(240,253,244,.94);
}
.nt-scenario-feedback strong{
  display:block;
  margin-bottom:5px;
  text-transform:uppercase;
  letter-spacing:.08em;
  font-size:11px;
  font-family:var(--nt-font-mono);
}
.nt-scenario-feedback p{ margin:0; font-weight:780; }
.nt-scenario-feedback small{ display:block; margin-top:8px; color:#64748b; font-weight:800; }
.nt-scenario-actions{
  display:flex;
  gap:10px;
  justify-content:flex-end;
  margin-top:16px;
}
@media (max-width:620px){
  .nt-scenario-overlay{ align-items:flex-end; padding:10px 10px calc(10px + var(--nt-safe-bottom)); }
  .nt-scenario-modal{ max-height:92vh; padding:15px; box-shadow:7px 7px 0 rgba(15,23,42,.95); }
  .nt-scenario-stats{ grid-template-columns:1fr; }
  .nt-scenario-actions{ flex-direction:column-reverse; }
  .nt-scenario-actions .nt-btn{ width:100%; }
}

/* Sprint 19 · Unified cyber modal system */
.nt-tool-overlay{
  z-index:110;
  align-items:center;
  padding:18px;
  background:radial-gradient(circle at 50% 0%,rgba(23,191,174,.16),transparent 36%),rgba(5,10,20,.68);
  backdrop-filter:blur(12px);
}
.nt-tool-panel{
  width:min(760px,100%);
  max-height:calc(100vh - 34px);
  overflow:auto;
  border-radius: var(--nt-radius);
  background:linear-gradient(180deg,rgba(255,255,255,.99),rgba(250,248,244,.99));
  border:1px solid rgba(15,23,42,.22);
  border-top:6px solid var(--nt-red);
  box-shadow:16px 16px 0 rgba(15,23,42,.95),0 32px 100px rgba(2,6,23,.42);
  padding:18px;
}
.nt-tool-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:14px;
  border-bottom:1px solid rgba(15,23,42,.12);
  padding-bottom:14px;
}
.nt-tool-head h2{
  margin:4px 0 0;
  font-size:clamp(22px,4.5vw,34px);
  letter-spacing:-.045em;
  color:var(--nt-black);
}
.nt-tool-body{
  margin-top:14px;
}
.nt-tool-body > .nt-view-lead:first-child{
  margin-top:0;
  color:#475569;
  line-height:1.45;
}
.nt-tool-panel .nt-empty-state,
.nt-tool-panel .nt-history-item,
.nt-tool-panel .nt-alert-card,
.nt-tool-panel .nt-report-kit,
.nt-tool-panel .nt-check-row{
  border:1px solid rgba(15,23,42,.16);
  background:#fff;
  border-radius: var(--nt-radius);
  box-shadow:5px 5px 0 rgba(15,23,42,.10);
}
.nt-tool-panel .nt-report-kit{
  border-style:dashed;
  background:rgba(255,255,255,.72);
}
.nt-tool-panel .nt-report-copy{
  border:1px solid rgba(15,23,42,.18);
  border-radius: var(--nt-radius);
  background:linear-gradient(135deg,#F8FAFC,#EEF2F7);
  box-shadow:5px 5px 0 rgba(15,23,42,.08);
}
.nt-tool-panel .nt-guide-list,
.nt-tool-panel .nt-report-kit ul{
  line-height:1.55;
}
.nt-tool-panel .nt-btn,
.nt-share-btn{
  box-shadow:5px 5px 0 rgba(15,23,42,.12);
}
.nt-share-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px;
}
.nt-share-btn{
  width:100%;
  border:1px solid rgba(15,23,42,.22);
  background:#fff;
  color:var(--nt-black);
  padding:12px;
  font-family:var(--nt-font-mono);
  font-size:11px;
  font-weight:950;
  text-transform:uppercase;
  letter-spacing:.08em;
  cursor:pointer;
  transition:transform .14s ease,border-color .14s ease,background .14s ease;
}
.nt-share-btn:hover{
  transform:translateY(-1px);
  border-color:var(--nt-red);
  background:linear-gradient(135deg,rgba(254,242,242,.96),#fff);
}
.nt-install-panel .nt-report-kit,
.nt-share-panel .nt-report-kit{
  margin-top:12px;
}
@media (max-width:620px){
  .nt-tool-overlay{
    align-items:flex-end;
    padding:10px 10px calc(10px + var(--nt-safe-bottom));
  }
  .nt-tool-panel{
    max-height:92vh;
    padding:15px;
    box-shadow:7px 7px 0 rgba(15,23,42,.95);
  }
  .nt-share-grid{ grid-template-columns:1fr; }
}

/* Sprint 25 · caja única de evidencia */
.nt-textarea--unified {
  min-height: 170px;
  line-height: 1.5;
}
.nt-field-help {
  display: block;
  margin-top: 8px;
  color: rgba(15, 23, 42, 0.62);
  font-size: 0.82rem;
  line-height: 1.35;
}


/* BYT-USA-1 brand refinements */
.nt-mobile-frame {
  border-left: 1px solid rgba(6,43,111,.08);
  border-right: 1px solid rgba(6,43,111,.08);
  box-shadow: 0 0 0 1px rgba(6,43,111,.06), 0 30px 90px rgba(6,43,111,.14);
}
.nt-glassbar {
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(244,251,252,.78));
  border-bottom: 1px solid rgba(6,43,111,.16);
}
.nt-glassbar:before {
  background: linear-gradient(90deg, var(--nt-navy), var(--nt-teal), rgba(6,43,111,.14), var(--nt-teal), var(--nt-navy));
  opacity:.72;
}
.nt-brand-icon {
  width: 50px;
  height: 50px;
  border-radius: 18px;
  background:#fff;
  box-shadow: 0 10px 26px rgba(6,43,111,.16);
  filter:none;
}
.nt-brand-copy strong { font-style: normal; letter-spacing:-.055em; color:var(--nt-navy); }
.nt-brand-copy small { color:var(--nt-teal-dark); letter-spacing:.12em; }
.nt-immunity {
  background: rgba(232, 251, 248, .86);
  border-color: rgba(23,191,174,.34);
  box-shadow: 0 10px 22px rgba(6,43,111,.10);
  border-radius: 999px;
}
.nt-btn--primary:hover { background: var(--nt-teal-dark); }
.nt-tabbar { background: rgba(6, 43, 111, .96); }
.nt-tabbar button.active { border-top-color: var(--nt-teal); }
.nt-risk-block:after { border-color: rgba(23,191,174,.24); }
.nt-loading-screen img { max-width: min(82vw, 430px); }