.proof-page .proof-hero { padding: 2.5rem 0 1rem; }
.proof-page h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin: 0.35rem 0 0.75rem; }
.claim-boundary {
  margin: 1rem 0; padding: 0.75rem 1rem; border: 1px solid var(--line);
  border-radius: 10px; background: rgba(0,251,218,0.06);
  font-size: 0.85rem; font-weight: 700; letter-spacing: 0.02em;
}
.proof-card-sec { padding: 1rem 0 3rem; }
.proof-card {
  background: linear-gradient(180deg, #101820, #0a1015);
  border: 1px solid var(--line); border-radius: 18px; padding: 1.25rem 1.35rem 1.5rem;
  box-shadow: 0 18px 40px rgba(0,0,0,0.35);
}
.stage-rail {
  display: flex; flex-wrap: wrap; gap: 0.45rem; align-items: center;
  margin-bottom: 1.25rem;
}
.stage {
  font-size: 0.72rem; font-weight: 800; letter-spacing: 0.06em;
  padding: 0.35rem 0.55rem; border-radius: 8px; border: 1px solid var(--line);
  color: var(--muted); opacity: 0.55;
}
.stage.on { opacity: 1; color: var(--teal); border-color: rgba(0,251,218,0.35); background: rgba(0,251,218,0.08); }
.stage.fail { opacity: 1; color: #ff6b6b; border-color: rgba(255,107,107,0.45); background: rgba(255,107,107,0.08); }
.stage-sep { color: var(--muted); font-size: 0.8rem; }
.proof-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}
@media (max-width: 640px) {
  .proof-grid { grid-template-columns: 1fr; }
}
.proof-h { font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0 0 0.35rem; }
.proof-big { font-size: 1.35rem; font-weight: 800; margin: 0; }
.proof-meta { color: var(--muted); font-size: 0.82rem; margin: 0.25rem 0 0; }
.verify-action-row { display: grid; gap: 0.55rem; margin: 1rem 0; }
.btn-primary {
  background: var(--teal); color: #041016; border: none; font-weight: 800;
  padding: 0.75rem 1.1rem; border-radius: 10px; cursor: pointer; width: fit-content;
}
.btn-primary:disabled { opacity: 0.5; cursor: wait; }
.verify-banner {
  padding: 0.85rem 1rem; border-radius: 10px; font-weight: 800; margin-bottom: 1rem;
}
.verify-banner.ok { background: rgba(0,251,218,0.12); border: 1px solid rgba(0,251,218,0.35); color: var(--teal); }
.verify-banner.bad { background: rgba(255,107,107,0.12); border: 1px solid rgba(255,107,107,0.4); color: #ff8a8a; }
.full-proof { margin-top: 0.5rem; border-top: 1px solid var(--line); padding-top: 0.85rem; }
.full-proof summary { cursor: pointer; font-weight: 800; letter-spacing: 0.04em; }
.proof-dl { display: grid; grid-template-columns: 10rem 1fr; gap: 0.45rem 0.75rem; margin: 0.85rem 0; font-size: 0.86rem; }
.proof-dl dt { color: var(--muted); }
.proof-dl dd { margin: 0; }
.break { word-break: break-all; }
.legacy-note { font-size: 0.8rem; color: var(--muted); }
@media (max-width: 640px) {
  .proof-dl { grid-template-columns: 1fr; }
}