:root {
  --m6-primary:#1E4129;
  --m6-accent:#50C878;
  --m6-accent-soft:rgba(80,200,120,0.16);
  --m6-bg:#f6f7f8;
  --m6-text:#0f172a;
  --m6-text-soft:#6b7280;
  --m6-radius:1.2rem;
  --m6-shadow:0 18px 40px rgba(15,23,42,.12);
  --m6-danger:#dc2626;
  --m6-warn:#f97316;
  --m6-ok:#16a34a;
}

* { box-sizing:border-box; }

.rt-root {
  max-width:960px;
  margin:0 auto;
  padding:1.5rem;
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--m6-text);
}

.rt-header-eyebrow {
  font-size:.78rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--m6-text-soft);
}

.rt-header-title {
  font-size:1.8rem;
  margin:.2rem 0 .5rem;
}

.rt-header-sub {
  font-size:1rem;
  color:var(--m6-text-soft);
  max-width:46rem;
  line-height:1.5;
}

.rt-card {
  margin-top:1.5rem;
  background:#fff;
  border-radius:var(--m6-radius);
  padding:1.4rem 1.6rem;
  border:1px solid rgba(226,232,240,.9);
  box-shadow:var(--m6-shadow);
}

.rt-card + .rt-card {
  margin-top:1.2rem;
}

.rt-card-title {
  font-size:1.1rem;
  margin:0 0 .4rem;
}

.rt-card-sub {
  font-size:.9rem;
  color:var(--m6-text-soft);
  margin:0 0 .7rem;
}

.rt-row {
  display:flex;
  flex-wrap:wrap;
  gap:1rem;
  align-items:flex-start;
  margin-top:.6rem;
}

.rt-col {
  flex:1 1 220px;
}

.rt-tag {
  display:inline-flex;
  align-items:center;
  gap:.25rem;
  padding:.18rem .6rem;
  border-radius:999px;
  font-size:.78rem;
  background:#e5e7eb;
  color:#374151;
}

.rt-tag-crit {
  background:#fee2e2;
  color:#b91c1c;
}
.rt-tag-info {
  background:var(--m6-accent-soft);
  color:var(--m6-primary);
}

.rt-list {
  margin:.3rem 0 0;
  padding-left:1.1rem;
  font-size:.9rem;
  color:var(--m6-text-soft);
}

.rt-list li {
  margin:.12rem 0;
}

.rt-btn-row {
  display:flex;
  flex-wrap:wrap;
  gap:.6rem;
  margin-top:1rem;
}

.rt-btn {
  padding:.8rem 1.4rem;
  border-radius:999px;
  border:none;
  font-weight:600;
  cursor:pointer;
  font-size:.95rem;
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  transition:background .18s ease, transform .08s ease, box-shadow .18s ease;
  box-shadow:0 10px 20px rgba(15,23,42,.18);
}
.rt-btn:active {
  transform:translateY(1px);
  box-shadow:0 6px 12px rgba(15,23,42,.2);
}
.rt-btn-primary {
  background:var(--m6-primary);
  color:#fff;
}
.rt-btn-primary:hover {
  background:#16331e;
}
.rt-btn-secondary {
  background:#e5e7eb;
  color:#111827;
  box-shadow:0 6px 16px rgba(15,23,42,.12);
}
.rt-btn-secondary:hover {
  background:#d1d5db;
}

.rt-stage-indicator {
  font-size:.85rem;
  color:var(--m6-text-soft);
}

.rt-progress {
  margin-top:.6rem;
  display:flex;
  align-items:center;
  gap:.6rem;
  font-size:.82rem;
  color:var(--m6-text-soft);
}
.rt-progress-bar-wrap {
  flex:1;
  height:6px;
  border-radius:999px;
  background:#e5e7eb;
  overflow:hidden;
}
.rt-progress-bar {
  width:0%;
  height:100%;
  background:linear-gradient(90deg,var(--m6-primary),var(--m6-accent));
  transition:width .25s ease;
}

.rt-test-area {
  margin-top:1rem;
  border-radius:1rem;
  border:1px solid #d1d5db;
  background:#f9fafb;
  padding:1rem;
  min-height:220px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  position:relative;
  overflow:hidden;
}

.rt-test-label {
  font-size:.9rem;
  color:var(--m6-text-soft);
  margin-bottom:.4rem;
}

.rt-traffic-light {
  width:80px;
  height:200px;
  border-radius:40px;
  background:#111827;
  padding:10px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  align-items:center;
  box-shadow:0 14px 30px rgba(15,23,42,.5);
}
.rt-traffic-light .light {
  width:50px;
  height:50px;
  border-radius:50%;
  background:#111827;
  opacity:.2;
  box-shadow:0 0 0 2px #030712 inset;
}
.rt-traffic-light .light.red.active {
  background:#dc2626;
  opacity:1;
  box-shadow:0 0 16px rgba(248,113,113,.9);
}
.rt-traffic-light .light.amber.active {
  background:#f97316;
  opacity:1;
  box-shadow:0 0 16px rgba(251,146,60,.9);
}
.rt-traffic-light .light.green.active {
  background:#22c55e;
  opacity:1;
  box-shadow:0 0 16px rgba(74,222,128,.9);
}

.rt-hint {
  font-size:.85rem;
  color:var(--m6-text-soft);
  margin-top:.5rem;
  text-align:center;
}

.rt-stats {
  margin-top:.9rem;
  font-size:.85rem;
  color:var(--m6-text-soft);
  display:flex;
  flex-wrap:wrap;
  gap:1.2rem;
  justify-content:center;
}

.rt-stat-item {
  min-width:130px;
  text-align:center;
}
.rt-stat-label {
  font-size:.78rem;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:#9ca3af;
}
.rt-stat-value {
  font-size:1.1rem;
  font-weight:600;
  margin-top:.1rem;
}

.rt-arrow-display {
  font-size:3rem;
  font-weight:700;
  user-select:none;
}

.rt-track {
  width:100%;
  max-width:500px;
  height:120px;
  border-radius:999px;
  background:#e5e7eb;
  position:relative;
  overflow:hidden;
  margin-top:.6rem;
}
.rt-track-center {
  position:absolute;
  left:50%;
  top:0;
  bottom:0;
  width:4px;
  background:#9ca3af;
  transform:translateX(-50%);
}
.rt-track-car {
  position:absolute;
  top:50%;
  transform:translate(-50%,-50%);
  width:26px;
  height:26px;
  border-radius:50%;
  background:var(--m6-accent);
  box-shadow:0 0 10px rgba(16,185,129,.7);
}

.rt-symbol-grid {
  display:grid;
  grid-template-columns:repeat(6,40px);
  grid-template-rows:repeat(3,40px);
  gap:.4rem;
  justify-content:center;
  margin-top:.6rem;
}
.rt-symbol-cell {
  width:40px;
  height:40px;
  border-radius:.6rem;
  background:#e5e7eb;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.3rem;
  color:#111827;
  user-select:none;
}
.rt-symbol-cell.target {
  outline:2px solid var(--m6-accent);
}

.rt-summary-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:1rem;
  margin-top:.8rem;
}

.rt-summary-card {
  border-radius:1rem;
  border:1px solid #e5e7eb;
  background:#f9fafb;
  padding:.8rem 1rem;
  font-size:.88rem;
}

.rt-summary-title {
  font-weight:600;
  margin-bottom:.2rem;
  font-size:.9rem;
}

.rt-summary-score {
  font-weight:600;
  margin-top:.3rem;
}

.rt-summary-badge {
  display:inline-block;
  margin-top:.2rem;
  padding:.15rem .5rem;
  border-radius:999px;
  font-size:.75rem;
  font-weight:600;
}
.rt-badge-low {
  background:#fee2e2;
  color:#b91c1c;
}
.rt-badge-mid {
  background:#ffedd5;
  color:#c2410c;
}
.rt-badge-high {
  background:#dcfce7;
  color:#15803d;
}

@media(max-width:768px){
  .rt-root { padding:1rem; }
  .rt-card { padding:1.1rem 1.2rem; }
  .rt-header-title { font-size:1.55rem; }
  .rt-symbol-grid {
    grid-template-columns:repeat(6,36px);
    grid-template-rows:repeat(3,36px);
  }
  .rt-symbol-cell {
    width:36px;
    height:36px;
    font-size:1.1rem;
  }
}