/* ===== DEFENSE STACK ===== */
.defense {
  padding: 120px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.layers {
  display: grid;
  gap: 14px;
  margin-top: 48px;
  position: relative;
}

.layer {
  display: grid;
  grid-template-columns: 180px 1fr auto;
  gap: 32px;
  padding: 28px 32px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 3px;
  align-items: center;
  transition: border-color 0.22s, transform 0.22s, background 0.22s;
  position: relative;
  cursor: default;
  overflow: hidden;
}
.layer::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--defense);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.25s;
}
.layer:hover {
  border-color: var(--line-strong);
  background: var(--bg-card);
  transform: translateX(4px);
}
.layer:hover::before { transform: scaleY(1); }

.layer-depth {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--defense);
}
.layer-depth-num {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 32px;
  line-height: 1;
  color: var(--defense);
  display: block;
  margin-bottom: 6px;
  font-variation-settings: "opsz" 144;
}
.layer-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.2;
  margin-bottom: 6px;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.layer-desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-dim);
  max-width: 540px;
}
.layer-stops {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  text-align: right;
  text-transform: uppercase;
}
.layer-stops-num {
  display: block;
  font-family: var(--serif);
  font-size: 28px;
  color: var(--ink);
  font-variation-settings: "opsz" 144;
  font-weight: 300;
  margin-bottom: 2px;
}
.layer-stops-num em { color: var(--defense); font-style: normal; }

@media (max-width: 800px) {
  .layer { grid-template-columns: 1fr; gap: 12px; padding: 24px; }
  .layer-stops { text-align: left; }
}