/* Stable process rail and compact operational principle panel. */
.hero-system {
  width: min(940px, 100%);
  min-height: 238px;
  height: auto;
  padding: 20px;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0, 0, 0, .25);
}

.system-topline { font-size: 11px; }

.process-rail {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-top: 42px;
}

.hero-system .node {
  position: relative;
  z-index: 1;
  width: auto;
  min-height: 99px;
  padding: 13px 14px;
  background: rgba(25, 31, 50, .9);
  box-shadow: 0 12px 22px rgba(0, 0, 0, .14);
}

.hero-system .node strong { font-size: 17px; }
.hero-system .node small { font-size: 13px; line-height: 1.35; color: #bdc6dc; }
.hero-system .node-index { font-size: 11px; margin-bottom: 4px; }

.hero-system .node:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  left: -25px;
  width: 24px;
  border-top: 1px dashed rgba(125, 158, 240, .7);
}

.hero-system .node:not(:last-child)::before {
  content: "‹";
  position: absolute;
  top: calc(50% - 14px);
  left: -28px;
  color: #89a6ff;
  font-size: 20px;
}

.service-list { grid-template-columns: repeat(auto-fit, minmax(245px, 1fr)); }
.reality { align-items: start; }
.metric-card {
  min-height: 238px;
  padding: 28px;
  background: linear-gradient(145deg, #3b65d4, #294ba9);
  box-shadow: 0 14px 28px rgba(0, 0, 0, .22);
}
.metric-card strong { line-height: 1.1; }

@media (max-width: 900px) {
  .hero-system { min-height: 278px; }
  .process-rail { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 26px; }
  .hero-system .node:not(:last-child)::before,
  .hero-system .node:not(:last-child)::after { display: none; }
  .service-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .hero-system { min-height: 300px; height: auto; padding: 16px; }
  .hero-system .node { min-height: 89px; padding: 11px; }
  .hero-system .node strong { font-size: 15px; }
  .hero-system .node small { font-size: 11px; }
  .system-caption { bottom: 13px; left: 16px; font-size: 12px; }
  .service-list { grid-template-columns: 1fr; }
  .metric-card { min-height: 175px; padding: 24px; }
  .metric-card strong { font-size: 36px; }
}