.concept-flow-card {
  --flow-card-bg: linear-gradient(135deg, rgba(15, 23, 42, 0.04), rgba(2, 132, 199, 0.06));
  --flow-border: rgba(2, 132, 199, 0.25);
  --flow-node-bg: #ffffff;
  --flow-node-border: rgba(15, 23, 42, 0.15);
  --flow-node-text: #111827;
  --flow-link: rgba(2, 132, 199, 0.45);
  --flow-pulse: #0284c7;
  --flow-badge-bg: rgba(2, 132, 199, 0.12);
  --flow-badge-text: #075985;
  border: 1px solid var(--flow-border);
  border-radius: 14px;
  background: var(--flow-card-bg);
  padding: 0.9rem 1rem 1rem;
  margin: 0.8rem 0 1rem;
  overflow: hidden;
}

.concept-flow-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
}

.concept-flow-title {
  font-weight: 700;
  color: #0f172a;
}

.concept-flow-badge {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--flow-badge-text);
  background: var(--flow-badge-bg);
  border: 1px solid rgba(2, 132, 199, 0.25);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  white-space: nowrap;
}

.concept-flow-line {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  padding: 0.25rem 0;
}

.concept-node {
  flex: 1 1 0;
  min-width: 0;
  max-width: none;
  border: 1px solid var(--flow-node-border);
  border-radius: 10px;
  background: var(--flow-node-bg);
  color: var(--flow-node-text);
  font-size: 0.74rem;
  font-weight: 400;
  line-height: 1.2;
  text-align: center;
  padding: 0.65rem 0.55rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  word-break: normal;
  overflow-wrap: normal;
}

.concept-flow-line--dense {
  gap: 0.22rem;
}

.concept-flow-line--dense .concept-node {
  font-size: 0.7rem;
  padding: 0.55rem 0.42rem;
}

.concept-flow-line--dense .concept-link {
  flex-basis: clamp(0.7rem, 1.4vw, 1.1rem);
}

.concept-link {
  position: relative;
  flex: 0 0 clamp(0.9rem, 1.8vw, 1.6rem);
  height: 1.4rem;
}

.concept-link::before {
  content: "";
  position: absolute;
  left: 0.2rem;
  right: 0.2rem;
  top: 50%;
  height: 2px;
  background: linear-gradient(
    90deg,
    rgba(2, 132, 199, 0.15),
    var(--flow-link),
    rgba(2, 132, 199, 0.15)
  );
  transform: translateY(-50%);
}

.concept-pulse {
  position: absolute;
  width: 8px;
  height: 8px;
  top: 50%;
  left: 0.2rem;
  border-radius: 50%;
  background: var(--flow-pulse);
  box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.14);
  transform: translateY(-50%);
  animation: concept-flow-pulse 1.8s linear infinite;
}

.concept-link:nth-child(2n) .concept-pulse {
  animation-delay: 0.2s;
}

.concept-link:nth-child(4n) .concept-pulse {
  animation-delay: 0.35s;
}

.concept-flow-note {
  margin: 0.7rem 0 0;
  font-size: 0.8rem;
  color: #334155;
}

@keyframes concept-flow-pulse {
  0% {
    left: 0.2rem;
    opacity: 0.2;
  }

  10% {
    opacity: 1;
  }

  95% {
    opacity: 1;
  }

  100% {
    left: calc(100% - 0.65rem);
    opacity: 0.12;
  }
}

@media (max-width: 900px) {
  .concept-node {
    font-size: 0.7rem;
  }

  .concept-link {
    flex-basis: 1.2rem;
  }
}

@media (max-width: 720px) {
  .concept-flow-line {
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: thin;
    scrollbar-color: rgba(2, 132, 199, 0.4) transparent;
  }

  .concept-flow-line::-webkit-scrollbar {
    height: 6px;
  }

  .concept-flow-line::-webkit-scrollbar-thumb {
    background: rgba(2, 132, 199, 0.4);
    border-radius: 999px;
  }

  .concept-node {
    flex: 0 0 6.8rem;
  }

  .concept-link {
    flex: 0 0 1.1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .concept-pulse {
    animation: none;
    left: calc(50% - 4px);
    opacity: 1;
  }
}

.concept-query-card {
  --query-border: rgba(2, 132, 199, 0.25);
  --query-card-bg: linear-gradient(135deg, rgba(15, 23, 42, 0.04), rgba(2, 132, 199, 0.07));
  --query-node-bg: #ffffff;
  --query-node-border: rgba(15, 23, 42, 0.16);
  --query-node-active: #0369a1;
  --query-node-related: rgba(2, 132, 199, 0.08);
  --query-text: #0f172a;
  --query-muted: #334155;
  border: 1px solid var(--query-border);
  border-radius: 14px;
  background: var(--query-card-bg);
  padding: 0.95rem 1rem 1rem;
  margin: 0.85rem 0 1.2rem;
  overflow: hidden;
}

.concept-query-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.concept-query-title {
  font-weight: 700;
  color: var(--query-text);
}

.concept-query-badge {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #075985;
  background: rgba(2, 132, 199, 0.12);
  border: 1px solid rgba(2, 132, 199, 0.25);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  white-space: nowrap;
}

.concept-query-help {
  margin: 0.6rem 0 0.75rem;
  font-size: 0.8rem;
  color: var(--query-muted);
}

.concept-query-diagram {
  display: grid;
  grid-template-columns: minmax(9rem, 11rem) minmax(4.2rem, 5.1rem) minmax(10rem, 12.5rem);
  grid-template-rows: auto 1.05rem auto 1.05rem auto 1.05rem auto 1.05rem auto;
  column-gap: 0.62rem;
  align-items: center;
  justify-content: flex-start;
}

.concept-query-node {
  width: 100%;
  border: 1px solid var(--query-node-border);
  border-radius: 11px;
  background: var(--query-node-bg);
  color: var(--query-text);
  font-size: 0.74rem;
  font-weight: 400;
  line-height: 1.25;
  text-align: center;
  padding: 0.6rem 0.55rem;
  min-height: 2.55rem;
  cursor: pointer;
  transition: border-color 150ms ease, box-shadow 150ms ease, background-color 150ms ease, transform 150ms ease;
  white-space: normal;
  word-break: normal;
  overflow-wrap: normal;
}

.concept-query-node:hover {
  border-color: rgba(3, 105, 161, 0.55);
}

.concept-query-node:focus-visible {
  outline: 2px solid rgba(2, 132, 199, 0.45);
  outline-offset: 2px;
}

.concept-query-node.is-active {
  border-color: var(--query-node-active);
  box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.16);
  background: rgba(2, 132, 199, 0.08);
  transform: translateY(-1px);
}

.concept-query-node.is-related {
  border-color: rgba(2, 132, 199, 0.45);
  background: var(--query-node-related);
}

.concept-query-stage-validation {
  grid-column: 1;
  grid-row: 1;
}

.concept-query-down {
  grid-column: 1;
  width: 2px;
  height: 0.85rem;
  margin: 0 auto;
  background: rgba(2, 132, 199, 0.45);
  position: relative;
}

.concept-query-down::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -2px;
  width: 0.36rem;
  height: 0.36rem;
  border-right: 2px solid rgba(2, 132, 199, 0.55);
  border-bottom: 2px solid rgba(2, 132, 199, 0.55);
  transform: translateX(-50%) rotate(45deg);
}

.concept-query-down--1 {
  grid-row: 2;
}

.concept-query-stage-prefilter {
  grid-column: 1;
  grid-row: 3;
}

.concept-query-call {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  color: #075985;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: lowercase;
  opacity: 0.7;
  transition: opacity 150ms ease, transform 150ms ease;
}

.concept-query-call.is-related {
  opacity: 1;
  transform: translateX(1px);
}

.concept-query-call-arrow {
  position: relative;
  flex: 1;
  height: 2px;
  border-radius: 999px;
  background: rgba(2, 132, 199, 0.5);
}

.concept-query-call-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 50%;
  width: 0.42rem;
  height: 0.42rem;
  border-right: 2px solid rgba(2, 132, 199, 0.64);
  border-top: 2px solid rgba(2, 132, 199, 0.64);
  transform: translateY(-50%) rotate(45deg);
}

.concept-query-call--prefilter {
  grid-column: 2;
  grid-row: 3;
}

.concept-query-stage-meta-a {
  grid-column: 3;
  grid-row: 3;
}

.concept-query-down--2 {
  grid-row: 4;
}

.concept-query-stage-knn {
  grid-column: 1;
  grid-row: 5;
}

.concept-query-call--knn {
  grid-column: 2;
  grid-row: 5;
}

.concept-query-stage-hnsw {
  grid-column: 3;
  grid-row: 5;
}

.concept-query-down--3 {
  grid-row: 6;
}

.concept-query-stage-fetch {
  grid-column: 1;
  grid-row: 7;
}

.concept-query-call--fetch {
  grid-column: 2;
  grid-row: 7;
}

.concept-query-stage-meta-b {
  grid-column: 3;
  grid-row: 7;
}

.concept-query-down--4 {
  grid-row: 8;
}

.concept-query-stage-result {
  grid-column: 1;
  grid-row: 9;
}

.concept-query-detail {
  margin-top: 0.72rem;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: 10px;
  padding: 0.65rem 0.78rem;
  background: rgba(255, 255, 255, 0.92);
}

.concept-query-detail-label {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #64748b;
  font-weight: 700;
}

.concept-query-detail-title {
  margin: 0.12rem 0 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--query-text);
}

.concept-query-detail-service {
  margin: 0.25rem 0 0;
  font-size: 0.75rem;
  color: #1e293b;
}

.concept-query-detail-text {
  margin: 0.32rem 0 0;
  font-size: 0.8rem;
  color: var(--query-muted);
}

@media (max-width: 840px) {
  .concept-query-diagram {
    grid-template-columns: minmax(8.3rem, 10rem) minmax(3.6rem, 4.4rem) minmax(8.8rem, 10.8rem);
    column-gap: 0.48rem;
  }

  .concept-query-node {
    font-size: 0.7rem;
    padding: 0.5rem 0.5rem;
  }
}

@media (max-width: 700px) {
  .concept-flow-badge {
    white-space: normal;
    text-align: center;
  }

  .concept-query-diagram {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.4rem;
  }

  .concept-query-call {
    width: 100%;
  }

  .concept-query-down {
    display: none;
  }
}