/* Hero proof chain: a finite, one-way reconstruction from evidence to outcome. */
.proof-chain {
  --proof-ink: #201a43;
  --proof-muted: #5e5872;
  --proof-line: rgba(54, 42, 128, 0.24);
  --proof-line-strong: #5746bd;
  position: relative;
  min-height: 388px;
  margin-top: 66px;
  padding: 24px 0 20px;
  isolation: isolate;
}

.proof-chain::before,
.proof-chain::after {
  position: absolute;
  right: 0;
  left: 0;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(48, 37, 112, 0.2) 12%, rgba(48, 37, 112, 0.2) 88%, transparent);
}

.proof-chain::before { top: 0; }
.proof-chain::after { bottom: 0; }

.proof-chain__heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 26px;
  color: #393252;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.proof-chain__heading span:last-child {
  color: rgba(48, 37, 112, 0.64);
  text-align: right;
}

.proof-chain__scene {
  position: relative;
  min-height: 294px;
}

.proof-chain__evidence {
  position: absolute;
  z-index: 2;
  top: 9px;
  left: 0;
  width: min(31%, 320px);
  list-style: none;
}

.proof-evidence {
  position: relative;
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 11px;
  align-items: center;
  min-height: 59px;
  padding: 9px 6px 9px 0;
  border-bottom: 1px solid rgba(48, 37, 112, 0.14);
  color: var(--proof-ink);
}

.proof-evidence + .proof-evidence { margin-top: 27px; }

.proof-evidence__mark {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  color: var(--proof-line-strong);
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(69, 54, 157, 0.24);
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 750;
}

.proof-evidence__source {
  display: block;
  margin-bottom: 1px;
  color: var(--proof-muted);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.proof-evidence__value {
  display: block;
  font-family: var(--mono);
  font-size: clamp(13px, 1.25vw, 15px);
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.proof-chain__paths {
  position: absolute;
  z-index: 1;
  top: 22px;
  left: 26.5%;
  width: 43%;
  height: 235px;
  overflow: visible;
  pointer-events: none;
}

.proof-path {
  fill: none;
  stroke: var(--proof-line-strong);
  stroke-width: 1.35;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.proof-path--soft { stroke: rgba(74, 58, 167, 0.35); }

.proof-chain__junction {
  fill: #faf9ff;
  stroke: var(--proof-line-strong);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.proof-chain__outcome {
  position: absolute;
  z-index: 2;
  top: 66px;
  right: 0;
  width: min(32%, 342px);
  padding-left: 24px;
}

.proof-chain__outcome::before {
  position: absolute;
  top: 1px;
  bottom: 2px;
  left: 0;
  width: 3px;
  content: "";
  background: #4a3aa7;
  border-radius: 3px;
}

.proof-outcome__eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  color: #42348f;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.proof-outcome__eyebrow::before {
  width: 15px;
  height: 15px;
  content: "\2713";
  color: #fff;
  background: #4a3aa7;
  border-radius: 50%;
  font-size: 10px;
  line-height: 15px;
  text-align: center;
}

.proof-outcome__title {
  max-width: 315px;
  margin: 0;
  color: #18142d;
  font-family: var(--serif);
  font-size: clamp(27px, 2.65vw, 34px);
  font-weight: 600;
  line-height: 1.06;
  letter-spacing: -0.025em;
}

.proof-outcome__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 25px;
  padding-top: 14px;
  border-top: 1px solid rgba(48, 37, 112, 0.16);
}

.proof-annotation { min-width: 0; }

.proof-annotation__label {
  display: block;
  color: var(--proof-muted);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.25;
  text-transform: uppercase;
}

.proof-annotation__value {
  display: block;
  margin-top: 4px;
  color: var(--proof-ink);
  font-family: var(--mono);
  font-size: clamp(12px, 1.2vw, 14px);
  font-weight: 750;
  letter-spacing: -0.025em;
  white-space: nowrap;
}

.proof-chain__mobile-spine { display: none; }

@media (prefers-reduced-motion: no-preference) {
  .js .proof-chain:not(.is-running):not(.is-complete) .proof-evidence,
  .js .proof-chain:not(.is-running):not(.is-complete) .proof-path,
  .js .proof-chain:not(.is-running):not(.is-complete) .proof-chain__junction,
  .js .proof-chain:not(.is-running):not(.is-complete) .proof-outcome__eyebrow,
  .js .proof-chain:not(.is-running):not(.is-complete) .proof-outcome__title,
  .js .proof-chain:not(.is-running):not(.is-complete) .proof-chain__outcome::before,
  .js .proof-chain:not(.is-running):not(.is-complete) .proof-outcome__meta,
  .js .proof-chain:not(.is-running):not(.is-complete) .proof-chain__mobile-spine {
    opacity: 0;
  }

  .proof-chain.is-running .proof-evidence,
  .proof-chain.is-running .proof-path,
  .proof-chain.is-running .proof-chain__junction,
  .proof-chain.is-running .proof-outcome__eyebrow,
  .proof-chain.is-running .proof-outcome__title,
  .proof-chain.is-running .proof-chain__outcome::before,
  .proof-chain.is-running .proof-outcome__meta,
  .proof-chain.is-running .proof-chain__mobile-spine {
    animation-play-state: paused;
    animation-fill-mode: both;
  }

  .proof-chain.is-running.is-visible .proof-evidence,
  .proof-chain.is-running.is-visible .proof-path,
  .proof-chain.is-running.is-visible .proof-chain__junction,
  .proof-chain.is-running.is-visible .proof-outcome__eyebrow,
  .proof-chain.is-running.is-visible .proof-outcome__title,
  .proof-chain.is-running.is-visible .proof-chain__outcome::before,
  .proof-chain.is-running.is-visible .proof-outcome__meta,
  .proof-chain.is-running.is-visible .proof-chain__mobile-spine {
    animation-play-state: running;
  }

  .proof-chain.is-running .proof-evidence {
    animation: proof-evidence-in 520ms cubic-bezier(.2, .7, .2, 1) both paused;
  }

  .proof-chain.is-running .proof-evidence:nth-child(1) { animation-delay: 120ms; }
  .proof-chain.is-running .proof-evidence:nth-child(2) { animation-delay: 860ms; }
  .proof-chain.is-running .proof-evidence:nth-child(3) { animation-delay: 1600ms; }

  .proof-chain.is-running .proof-path {
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
    animation: proof-path-draw 780ms cubic-bezier(.45, 0, .25, 1) both paused;
  }

  .proof-chain.is-running .proof-path:nth-of-type(1) { animation-delay: 410ms; }
  .proof-chain.is-running .proof-path:nth-of-type(2) { animation-delay: 1150ms; }
  .proof-chain.is-running .proof-path:nth-of-type(3) { animation-delay: 1890ms; }
  .proof-chain.is-running .proof-path:nth-of-type(4) { animation-delay: 2350ms; animation-duration: 560ms; }

  .proof-chain.is-running .proof-chain__junction {
    animation: proof-junction-in 240ms ease-out 2290ms both paused;
  }

  .proof-chain.is-running .proof-chain__outcome::before {
    transform-origin: top;
    animation: proof-rule-in 480ms cubic-bezier(.2, .7, .2, 1) 2700ms both paused;
  }

  .proof-chain.is-running .proof-outcome__eyebrow,
  .proof-chain.is-running .proof-outcome__title {
    animation: proof-outcome-in 600ms cubic-bezier(.2, .7, .2, 1) both paused;
  }

  .proof-chain.is-running .proof-outcome__eyebrow { animation-delay: 2820ms; }
  .proof-chain.is-running .proof-outcome__title { animation-delay: 3030ms; }

  .proof-chain.is-running .proof-outcome__meta {
    animation: proof-meta-in 650ms cubic-bezier(.2, .7, .2, 1) 3450ms both paused;
  }

  @keyframes proof-evidence-in {
    from { opacity: 0; transform: translateX(-14px); }
    to { opacity: 1; transform: translateX(0); }
  }

  @keyframes proof-path-draw {
    from { stroke-dashoffset: 1; }
    to { stroke-dashoffset: 0; }
  }

  @keyframes proof-junction-in {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  @keyframes proof-rule-in {
    from { opacity: 0; transform: scaleY(0); }
    to { opacity: 1; transform: scaleY(1); }
  }

  @keyframes proof-outcome-in {
    from { opacity: 0; clip-path: inset(0 100% 0 0); transform: translateX(-8px); }
    to { opacity: 1; clip-path: inset(0 0 0 0); transform: translateX(0); }
  }

  @keyframes proof-meta-in {
    from { opacity: 0; clip-path: inset(0 100% 0 0); }
    to { opacity: 1; clip-path: inset(0 0 0 0); }
  }
}

@media (max-width: 760px) {
  .proof-chain {
    min-height: 0;
    margin-top: 54px;
    padding: 22px 0 26px;
  }

  .proof-chain__heading {
    align-items: flex-start;
    margin-bottom: 22px;
    font-size: 10px;
  }

  .proof-chain__heading span:last-child { max-width: 135px; }

  .proof-chain__scene { min-height: 0; }

  .proof-chain__evidence {
    position: relative;
    top: auto;
    left: auto;
    width: 100%;
    padding-left: 36px;
  }

  .proof-evidence {
    grid-template-columns: 28px 1fr;
    min-height: 65px;
    padding-right: 0;
  }

  .proof-evidence + .proof-evidence { margin-top: 19px; }

  .proof-evidence__value {
    font-size: 14px;
    white-space: normal;
  }

  .proof-chain__paths { display: none; }

  .proof-chain__mobile-spine {
    position: absolute;
    z-index: 0;
    top: 27px;
    bottom: 171px;
    left: 13px;
    display: block;
    width: 1px;
    background: linear-gradient(to bottom, rgba(74, 58, 167, 0.28), #4a3aa7);
    transform-origin: top;
  }

  .proof-chain__mobile-spine::after {
    position: absolute;
    bottom: -1px;
    left: -3px;
    width: 7px;
    height: 7px;
    content: "";
    background: #4a3aa7;
    border-radius: 50%;
  }

  .proof-chain__outcome {
    position: relative;
    top: auto;
    right: auto;
    width: auto;
    margin-top: 45px;
    padding-left: 36px;
  }

  .proof-chain__outcome::before { left: 12px; }

  .proof-outcome__title {
    max-width: 330px;
    font-size: clamp(27px, 8.2vw, 32px);
  }

  .proof-outcome__meta {
    gap: 10px;
    margin-top: 23px;
  }

  .proof-annotation__label { font-size: 8.5px; }
  .proof-annotation__value { font-size: 12px; }

  @media (prefers-reduced-motion: no-preference) {
    .proof-chain.is-running .proof-chain__mobile-spine {
      animation: proof-spine-draw 1880ms cubic-bezier(.45, 0, .25, 1) 390ms both paused;
    }

    .proof-chain.is-running .proof-evidence {
      animation-name: proof-evidence-down;
    }

    @keyframes proof-evidence-down {
      from { opacity: 0; transform: translateY(-10px); }
      to { opacity: 1; transform: translateY(0); }
    }

    @keyframes proof-spine-draw {
      from { opacity: 0; transform: scaleY(0); }
      to { opacity: 1; transform: scaleY(1); }
    }
  }
}

@media (max-width: 390px) {
  .proof-chain__heading { gap: 10px; }
  .proof-chain__evidence { padding-left: 30px; }
  .proof-chain__outcome { padding-left: 30px; }
  .proof-chain__mobile-spine,
  .proof-chain__outcome::before { left: 9px; }
  .proof-outcome__meta { grid-template-columns: 1fr 1fr 1.1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .proof-chain,
  .proof-chain * { scroll-behavior: auto; }
}