/* Método: anel 3D de pilares. */
.method {
  background: var(--bg-2);
  position: relative;
  overflow: hidden;
}
.method > .container {
  z-index: 2;
  position: relative;
}
.ef-bg {
  object-fit: cover;
  z-index: 0;
  pointer-events: none;
  filter: grayscale(0.4) contrast(1.05) brightness(0.5);
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
}
.ef-bg-overlay {
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(120% 75% at 50% 0, #d81f2c14, #0000 55%);
  position: absolute;
  inset: 0;
}
.ef-orbit {
  perspective: 1300px;
  perspective-origin: 50% 46%;
  touch-action: pan-y;
  max-width: 1000px;
  height: clamp(340px, 50vw, 440px);
  margin: 54px auto 0;
  position: relative;
}
.ef-ring {
  transform-style: preserve-3d;
  cursor: grab;
  position: absolute;
  inset: 0;
  transform: rotateX(7deg);
}
.ef-ring.grabbing {
  cursor: grabbing;
}
.ef-orbit .pillar {
  backface-visibility: hidden;
  will-change: transform, opacity;
  cursor: pointer;
  width: clamp(240px, 76vw, 312px);
  transition:
    border-color 0.4s var(--ease),
    box-shadow 0.4s var(--ease);
  background: radial-gradient(115% 65% at 0 0, #d81f2c17, #0000 50%),
    linear-gradient(165deg, #17120f 0%, #0c0a0a 55%, #070707 100%);
  border: 1px solid #ffffff17;
  border-radius: 8px;
  padding: 28px 26px 26px;
  position: absolute;
  top: 50%;
  left: 50%;
  overflow: hidden;
  transform: translate(-50%, -50%);
  box-shadow:
    0 30px 70px #0009,
    inset 0 1px #ffffff0d;
}
.ef-orbit .pillar:before {
  content: "";
  z-index: 2;
  background: linear-gradient(
    180deg,
    var(--ember),
    var(--accent) 55%,
    var(--accent-deep)
  );
  width: 3px;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  box-shadow: 0 0 16px #d81f2c73;
}
.ef-orbit .pillar:after {
  z-index: 0;
  font-family: var(--display);
  color: #ffffff0d;
  pointer-events: none;
  font-size: 4.6rem;
  line-height: 1;
  position: absolute;
  top: 4px;
  right: 16px;
}
.ef-orbit .pillar:first-child:after {
  content: "01";
}
.ef-orbit .pillar:nth-child(2):after {
  content: "02";
}
.ef-orbit .pillar:nth-child(3):after {
  content: "03";
}
.ef-orbit .pillar:nth-child(4):after {
  content: "04";
}
.ef-orbit .pillar:hover {
  border-color: #d81f2c66;
  box-shadow:
    0 36px 80px #0000009e,
    0 0 0 1px #d81f2c33,
    0 16px 50px #d81f2c1a,
    inset 0 1px #ffffff12;
}
.pillar .idx {
  z-index: 1;
  font-family: var(--tech);
  letter-spacing: 0.26em;
  color: var(--accent);
  text-transform: uppercase;
  align-items: center;
  gap: 10px;
  font-size: 0.72rem;
  font-weight: 600;
  display: inline-flex;
  position: relative;
}
.pillar .idx:after {
  content: "";
  background: linear-gradient(90deg, var(--accent), transparent);
  width: 30px;
  height: 1px;
}
.pillar h3 {
  z-index: 1;
  font-family: var(--heading);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--white);
  margin: 16px 0 12px;
  font-size: 1.55rem;
  position: relative;
}
.pillar p {
  z-index: 1;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  position: relative;
}
.ef-hint {
  font-family: var(--tech);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
  opacity: 0.55;
  pointer-events: none;
  font-size: 0.66rem;
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translate(-50%);
}
@media (prefers-reduced-motion: reduce) {
  .ef-orbit {
    perspective: none;
    touch-action: auto;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    height: auto;
    display: flex;
  }
  .ef-ring {
    position: static;
    transform: none;
  }
  .ef-orbit .pillar {
    width: min(100%, 340px);
    position: static;
    opacity: 1 !important;
    transform: none !important;
  }
  .ef-hint {
    display: none;
  }
  .reveal,
  .head.reveal > * {
    opacity: 1 !important;
    filter: none !important;
    transition: none !important;
    transform: none !important;
  }
  .sec-divider .sd-index,
  .sec-divider .sd-label {
    opacity: 1 !important;
    transition: none !important;
    transform: none !important;
  }
  .sec-divider .sd-line {
    transition: none !important;
    transform: scaleX(1) !important;
  }
  .sec-divider .sd-line:after {
    display: none;
  }
}