.home-reliability-explorer {
  position: relative;
  padding: 118px 0;
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 14%, rgba(136,105,255,.16), transparent 30rem),
    radial-gradient(circle at 88% 72%, rgba(62,190,255,.09), transparent 32rem),
    rgba(255,255,255,.012);
}

.home-reliability-explorer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, #000, transparent 78%);
}

.reliability-explorer-head,
.reliability-map,
.stack-explorer-dark {
  position: relative;
  z-index: 1;
}

.reliability-explorer-head {
  max-width: 860px;
  margin-bottom: 46px;
}

.reliability-explorer-kicker {
  margin: 0 0 13px;
  color: #a795ff;
  font-size: .76rem;
  font-weight: 850;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.reliability-explorer-head h2,
.stack-explorer-head h2 {
  margin: 0;
  color: #f7f7fb;
  font-size: clamp(2.45rem, 5.4vw, 4.7rem);
  line-height: 1;
  letter-spacing: -.055em;
  text-wrap: balance;
}

.reliability-explorer-head > p:last-child,
.stack-explorer-head > p:last-child {
  max-width: 760px;
  margin: 18px 0 0;
  color: #aaaab8;
  font-size: 1.04rem;
  line-height: 1.75;
}

.reliability-map {
  display: grid;
  grid-template-columns: 190px minmax(280px, .82fr) minmax(0, 1.18fr);
  gap: 18px;
  align-items: stretch;
}

.reliability-risk-tabs {
  display: grid;
  gap: 10px;
  align-content: start;
}

.reliability-risk-tab,
.stack-case-tab {
  appearance: none;
  border: 1px solid rgba(255,255,255,.09);
  background: rgba(255,255,255,.028);
  color: #9b9baa;
  cursor: pointer;
  text-align: left;
  font: inherit;
  transition: transform .18s ease, color .18s ease, border-color .18s ease, background .18s ease;
}

.reliability-risk-tab {
  min-height: 58px;
  padding: 12px 14px;
  border-radius: 14px;
  font-size: .82rem;
  font-weight: 760;
}

.reliability-risk-tab:hover,
.reliability-risk-tab:focus-visible,
.reliability-risk-tab.is-active,
.stack-case-tab:hover,
.stack-case-tab:focus-visible,
.stack-case-tab.is-active {
  transform: translateY(-2px);
  border-color: rgba(167,149,255,.42);
  background: linear-gradient(135deg, rgba(137,107,255,.16), rgba(74,184,255,.07));
  color: #f7f7fb;
}

.reliability-risk-visual,
.reliability-risk-detail,
.stack-case-panel {
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 28px;
  background:
    radial-gradient(circle at var(--risk-glow-x, 78%) var(--risk-glow-y, 12%), rgba(137,107,255,.15), transparent 22rem),
    linear-gradient(145deg, rgba(255,255,255,.055), rgba(255,255,255,.018));
  box-shadow: 0 28px 80px rgba(0,0,0,.3), inset 0 1px rgba(255,255,255,.05);
}

.reliability-risk-visual {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  display: grid;
  place-items: center;
}

.reliability-risk-visual::before {
  content: "";
  position: absolute;
  inset: 20px;
  border-radius: 22px;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at center, #000, transparent 72%);
}

.reliability-orbit-ring {
  position: absolute;
  width: 250px;
  height: 250px;
  border: 1px solid rgba(167,149,255,.24);
  border-radius: 50%;
  animation: reliability-ring 5.8s ease-in-out infinite;
}

.reliability-orbit-ring.is-inner {
  width: 164px;
  height: 164px;
  animation-delay: 1.1s;
}

.reliability-orbit-core {
  position: relative;
  z-index: 2;
  width: 136px;
  height: 136px;
  display: grid;
  place-items: center;
  padding: 18px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 25%, rgba(255,255,255,.11), transparent 45%), #0d0d16;
  box-shadow: 0 0 0 14px rgba(10,10,17,.68), 0 0 70px rgba(137,107,255,.28);
  text-align: center;
}

.reliability-orbit-core strong {
  display: block;
  color: #f7f7fb;
  font-size: 1.02rem;
  line-height: 1.18;
}

.reliability-orbit-core span {
  display: block;
  margin-top: 7px;
  color: #8f8f9d;
  font-size: .68rem;
  line-height: 1.3;
}

.reliability-orbit-node {
  position: absolute;
  z-index: 3;
  min-width: 92px;
  padding: 10px 12px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 13px;
  background: rgba(7,7,12,.86);
  color: #c8c8d2;
  font-size: .7rem;
  font-weight: 720;
  text-align: center;
  box-shadow: 0 12px 28px rgba(0,0,0,.26);
}

.reliability-orbit-node.is-a { top: 14%; left: 10%; }
.reliability-orbit-node.is-b { top: 16%; right: 9%; }
.reliability-orbit-node.is-c { bottom: 14%; left: 11%; }
.reliability-orbit-node.is-d { bottom: 16%; right: 8%; }

.reliability-risk-detail {
  padding: 30px;
}

.reliability-risk-detail h3,
.stack-case-copy h3 {
  margin: 8px 0 12px;
  color: #f7f7fb;
  font-size: clamp(1.55rem, 2.8vw, 2.45rem);
  line-height: 1.08;
  letter-spacing: -.035em;
}

.reliability-risk-detail > p:not(.reliability-explorer-kicker),
.stack-case-copy > p:not(.reliability-explorer-kicker) {
  color: #aaaab8;
  line-height: 1.7;
}

.reliability-risk-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 24px 0;
}

.reliability-risk-column {
  padding: 16px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 16px;
  background: rgba(3,3,8,.4);
}

.reliability-risk-column strong {
  color: #d9d9e3;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .07em;
}

.reliability-risk-column ul,
.stack-signal-list {
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  list-style: none;
  color: #9696a4;
  font-size: .84rem;
}

.reliability-risk-column li::before,
.stack-signal-list li::before {
  content: "→";
  margin-right: 8px;
  color: #8f7aff;
}

.reliability-explorer-action {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 17px;
  border: 0;
  border-radius: 13px;
  background: linear-gradient(135deg, #f6f2ff, #cbbfff 55%, #a4ddff);
  color: #08080d;
  cursor: pointer;
  font: 800 .88rem inherit;
  text-decoration: none;
  box-shadow: 0 14px 34px rgba(112,91,255,.18);
}

.stack-explorer-dark {
  margin-top: 82px;
}

.stack-explorer-head {
  max-width: 760px;
  margin-bottom: 28px;
}

.stack-case-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 16px;
}

.stack-case-tab {
  padding: 10px 13px;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 760;
}

.stack-case-panel {
  padding: 28px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, .9fr);
  gap: 28px;
  align-items: center;
}

.stack-tool-cloud {
  min-height: 260px;
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  justify-content: center;
  gap: 10px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 22px;
  background:
    radial-gradient(circle at center, rgba(137,107,255,.14), transparent 70%),
    rgba(3,3,8,.42);
}

.stack-tool-cloud span {
  padding: 9px 12px;
  border: 1px solid rgba(167,149,255,.2);
  border-radius: 999px;
  background: rgba(137,107,255,.09);
  color: #d8d3ff;
  font-size: .76rem;
  font-weight: 730;
}

.stack-signal-list { margin-bottom: 22px; }

@keyframes reliability-ring {
  0%, 100% { transform: scale(1); opacity: .42; }
  50% { transform: scale(1.05); opacity: .9; }
}

@media (max-width: 980px) {
  .reliability-map { grid-template-columns: 1fr 1fr; }
  .reliability-risk-tabs { grid-column: 1 / -1; grid-template-columns: repeat(4, minmax(0,1fr)); }
  .reliability-risk-tab { text-align: center; }
}

@media (max-width: 760px) {
  .home-reliability-explorer { padding: 90px 0; }
  .reliability-map,
  .stack-case-panel { grid-template-columns: 1fr; }
  .reliability-risk-tabs { grid-template-columns: 1fr 1fr; }
  .reliability-risk-columns { grid-template-columns: 1fr; }
  .reliability-risk-visual { min-height: 360px; }
}

@media (max-width: 520px) {
  .reliability-risk-tabs { grid-template-columns: 1fr; }
  .reliability-risk-detail,
  .stack-case-panel { padding: 22px; }
  .reliability-orbit-node { min-width: 78px; font-size: .62rem; }
}

@media (prefers-reduced-motion: reduce) {
  .reliability-orbit-ring { animation: none; }
}