/* WHY DECODE EXISTS — editorial hero + brain structure guides */

.onx-why-decode {
  position: relative;
  padding: 80px 0 88px;
  background-color: #f7f7f2;
  background-image:
    radial-gradient(ellipse 120% 80% at 0% 50%, rgba(0, 165, 168, 0.06) 0%, transparent 55%),
    radial-gradient(ellipse 90% 70% at 100% 30%, rgba(45, 106, 106, 0.07) 0%, transparent 50%);
  border-top: 1px solid rgba(58, 68, 53, 0.06);
  border-bottom: 1px solid rgba(58, 68, 53, 0.06);
  overflow: hidden;
}

.onx-why-decode::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(122, 138, 114, 0.11) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(122, 138, 114, 0.11) 1px, transparent 1px),
    linear-gradient(to right, rgba(90, 108, 88, 0.17) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(90, 108, 88, 0.17) 1px, transparent 1px);
  background-size: 22px 22px, 22px 22px, 110px 110px, 110px 110px;
  background-position: center;
}

.onx-why-decode__inner {
  position: relative;
  z-index: 1;
  max-width: var(--onx-max-width);
  margin: 0 auto;
  padding: 0 28px;
}

/* ── Hero ── */
.onx-why-decode__hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 1.08fr);
  gap: 40px 56px;
  align-items: center;
  margin-bottom: 52px;
}

.onx-why-decode__kicker {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #6a7a68;
  margin: 0 0 16px;
}

.onx-why-decode__title {
  font-family: var(--onx-font-serif);
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.025em;
  color: #1e261c;
  margin: 0 0 24px;
}

.onx-why-decode__title em {
  font-style: italic;
  color: #2d6a6a;
}

.onx-why-decode__text {
  font-size: 15.5px;
  line-height: 1.72;
  color: #3a4435;
  margin: 0 0 14px;
  max-width: 52ch;
}

.onx-why-decode__text strong {
  font-weight: 700;
  color: #2a3228;
}

.onx-why-decode__visual {
  margin: 0;
  line-height: 0;
}

.onx-why-decode__visual-frame {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  background: #1a3a3c;
  box-shadow:
    0 24px 56px rgba(20, 50, 52, 0.18),
    0 0 0 1px rgba(255, 255, 255, 0.65) inset;
}

.onx-why-decode__brain-photo {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  object-position: center 42%;
}

.onx-why-decode__visual-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(160deg, rgba(0, 165, 168, 0.12) 0%, transparent 42%),
    linear-gradient(0deg, rgba(20, 40, 42, 0.35) 0%, transparent 38%),
    radial-gradient(ellipse 80% 60% at 70% 30%, rgba(49, 137, 204, 0.1) 0%, transparent 55%);
}

.onx-why-decode__visual-caption {
  margin: 12px 0 0;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #6a7a68;
  text-align: center;
  line-height: 1.4;
}

/* ── Brain structure guides ── */
.onx-why-decode__guides-kicker {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #6a7a68;
  text-align: center;
  margin: 0 0 22px;
}

.onx-why-decode__guides {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.onx-brain-guide {
  display: flex;
  flex-direction: column;
  padding: 24px 22px 22px;
  background: rgba(255, 255, 255, 0.94);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.98) inset,
    0 8px 28px rgba(42, 58, 32, 0.08),
    0 2px 8px rgba(42, 58, 32, 0.04);
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.onx-brain-guide:hover {
  transform: translateY(-3px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.98) inset,
    0 16px 40px rgba(42, 58, 32, 0.11),
    0 4px 12px rgba(42, 58, 32, 0.05);
}

.onx-brain-guide__header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 16px;
}

.onx-brain-guide__index {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff;
}

.onx-brain-guide--amygdala .onx-brain-guide__index {
  background: linear-gradient(145deg, #00a5a8 0%, #2d6a6a 100%);
  box-shadow: 0 4px 14px rgba(0, 165, 168, 0.35);
}

.onx-brain-guide--thalamus .onx-brain-guide__index {
  background: linear-gradient(145deg, #3189cc 0%, #1a4a78 100%);
  box-shadow: 0 4px 14px rgba(49, 137, 204, 0.35);
}

.onx-brain-guide--hippocampus .onx-brain-guide__index {
  background: linear-gradient(145deg, #5cb888 0%, #2a6a48 100%);
  box-shadow: 0 4px 14px rgba(92, 184, 136, 0.35);
}

.onx-brain-guide__system {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #7a8a72;
  margin: 0 0 4px;
}

.onx-brain-guide__title {
  font-family: var(--onx-font-serif);
  font-size: 20px;
  font-weight: 700;
  color: #1e261c;
  margin: 0;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.onx-brain-guide__diagram {
  margin: 0 0 16px;
  padding: 12px 10px;
  background: linear-gradient(180deg, #f4f6f2 0%, #eef2ec 100%);
  border-radius: 14px;
  border: 1px solid rgba(138, 154, 136, 0.2);
}

.onx-brain-guide__diagram svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 120px;
}

.onx-brain-guide__facts {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.onx-brain-guide__fact {
  margin: 0;
}

.onx-brain-guide__fact dt {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #6a7a68;
  margin-bottom: 4px;
}

.onx-brain-guide__fact dd {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.58;
  color: #3f4a3a;
}

.onx-brain-guide__fact--decode {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid rgba(138, 154, 136, 0.22);
}

.onx-brain-guide--amygdala .onx-brain-guide__fact--decode dt { color: #2d6a6a; }
.onx-brain-guide--thalamus .onx-brain-guide__fact--decode dt { color: #1a4a78; }
.onx-brain-guide--hippocampus .onx-brain-guide__fact--decode dt { color: #2a6a48; }

.onx-brain-guide--amygdala .onx-brain-guide__fact--decode dd { color: #2a4038; }
.onx-brain-guide--thalamus .onx-brain-guide__fact--decode dd { color: #2a3848; }
.onx-brain-guide--hippocampus .onx-brain-guide__fact--decode dd { color: #2a4034; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .onx-why-decode__hero {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .onx-why-decode__visual {
    max-width: 560px;
    margin: 0 auto;
    width: 100%;
  }

  .onx-why-decode__guides {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }
}

@media (max-width: 560px) {
  .onx-why-decode {
    padding: 56px 0 64px;
  }

  .onx-why-decode__inner {
    padding: 0 18px;
  }

  .onx-brain-guide {
    padding: 20px 18px 18px;
  }

  .onx-why-decode::before {
    background-image:
      linear-gradient(to right, rgba(122, 138, 114, 0.09) 1px, transparent 1px),
      linear-gradient(to bottom, rgba(122, 138, 114, 0.09) 1px, transparent 1px);
    background-size: 20px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .onx-brain-guide {
    transition: none;
  }

  .onx-brain-guide:hover {
    transform: none;
  }
}