.feature-grid > .feature:nth-child(4),
.feature-grid > .feature:nth-child(5) {
  grid-column: span 2;
}

#qaFilters .filter-row {
  grid-template-columns: 110px repeat(6, minmax(110px, 1fr));
}

.triplet-main {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  width: 100%;
}

.triplet-item span {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0;
}

.triplet-item strong {
  display: block;
  font-size: clamp(25px, 2.4vw, 36px);
  line-height: 1.15;
}

.triplet-item .compare {
  display: block;
  margin: 6px 0 0;
  font-size: 11px;
}

.triplet-item .compare.good {
  color: var(--green);
}

.triplet-item .compare.bad {
  color: var(--red);
}

.compare.neutral,
.triplet-item .compare.neutral {
  color: var(--muted);
}

.bar-list-primary {
  margin-top: 28px;
}

.submetric span {
  font-size: 15px;
}

.submetric b {
  font-size: 18px;
}

.bar i.level-alert {
  background: var(--red);
  box-shadow: 0 0 12px rgba(251, 91, 100, 0.35);
}

.bar-row b.level-alert {
  color: var(--red);
}

.status-dot {
  width: 11px;
  height: 11px;
  flex: 0 0 11px;
  background: currentColor;
  border: 2px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 5px currentColor, 0 0 14px currentColor;
}

.status-dot.good {
  color: var(--green);
}

.status-dot.warn {
  color: var(--orange);
}

.status-dot.bad {
  color: var(--red);
}

.period-cluster {
  display: flex;
  align-items: center;
  gap: 18px;
}

.page-title-note {
  color: var(--muted);
  font-size: inherit;
  font-weight: 500;
  letter-spacing: 0;
  vertical-align: middle;
}

.quality-filter-row {
  grid-template-columns: 110px repeat(3, minmax(160px, 1fr));
}

.filters {
  position: relative;
}

.filters:has(.compare-toggle) {
  padding-top: 58px;
}

.compare-toggle {
  position: absolute;
  right: 18px;
  top: 18px;
  z-index: 2;
  padding: 7px 14px;
  color: #cbd2dc;
  background: #1a202b;
  border: 1px solid #303848;
  border-radius: 8px;
  cursor: pointer;
}

.compare-toggle:hover {
  color: #fff;
  border-color: var(--blue);
}

.compare-row-collapsed {
  display: none;
}

.compare-row-collapsed.compare-row-open {
  display: grid;
}

.quality-compare-row {
  grid-template-columns: 110px minmax(150px, 1fr) minmax(180px, 1fr) minmax(390px, 2fr);
}

.competitor-field label {
  display: block;
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 11px;
}

.competitor-buttons {
  display: flex;
  gap: 8px;
}

.competitor-buttons button {
  flex: 1;
  padding: 9px 10px;
  color: var(--muted);
  background: #0b0e14;
  border: 1px solid #2b3240;
  border-radius: 9px;
  cursor: pointer;
  white-space: nowrap;
}

.competitor-buttons button.active {
  color: var(--competitor-color, #fff);
  border-color: currentColor;
  background: color-mix(in srgb, currentColor 12%, transparent);
}

.competitor-buttons button[data-model="豆包视频通话"] { --competitor-color: #f59e0b; }
.competitor-buttons button[data-model="Meta Ray-Ban"] { --competitor-color: #44d7e8; }
.competitor-buttons button[data-model="理想 G1"] { --competitor-color: #34d399; }

.compare-fields {
  display: contents;
}

.usage-block {
  text-align: right;
}

.usage-label {
  display: inline-block;
  margin-right: 8px;
  color: var(--muted);
  font-size: 12px;
  vertical-align: 3px;
}

.period-range {
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.trend-chart {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.trend-chart-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 10px;
}

.trend-chart svg {
  display: block;
  width: 100%;
  height: 74px;
  overflow: visible;
}

.trend-chart-tall svg {
  height: 148px;
}

.trend-plot {
  position: relative;
}

.trend-y-axis {
  position: absolute;
  inset: 4px auto 4px 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 48px;
  color: var(--muted);
  font-size: 9px;
  pointer-events: none;
}

.trend-line {
  fill: none;
  stroke: var(--blue);
  stroke-width: 2px;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.trend-line-1 {
  stroke: var(--cyan);
}

.trend-line-2 {
  stroke: var(--purple);
}

.trend-target {
  stroke: rgba(245, 158, 11, 0.8);
  stroke-width: 1px;
  stroke-dasharray: 4 4;
  vector-effect: non-scaling-stroke;
}

.trend-target-0 {
  stroke: var(--blue);
}

.trend-target-1 {
  stroke: var(--cyan);
}

.trend-target-2 {
  stroke: var(--purple);
}

.trend-legend {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.trend-legend i {
  width: 6px;
  height: 6px;
  margin-left: 7px;
  border-radius: 50%;
  background: var(--blue);
}

.trend-legend .trend-key-1 {
  background: var(--cyan);
}

.trend-legend .trend-key-2 {
  background: var(--purple);
}

.trend-legend .trend-target-key {
  width: 13px;
  height: 0;
  border-top: 1px dashed var(--orange);
  border-radius: 0;
  background: none;
}

.trend-legend .trend-target-key-0 {
  border-color: var(--blue);
}

.trend-legend .trend-target-key-1 {
  border-color: var(--cyan);
}

.trend-legend .trend-target-key-2 {
  border-color: var(--purple);
}

.trend-area {
  fill: url(#trendGradient);
  opacity: 0.4;
}

@media (max-width: 900px) {
  .online-toolbar,
  .period-cluster {
    align-items: flex-start;
    flex-direction: column;
  }
}

.metric-under-construction {
  overflow: hidden;
}

.metric-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  background: rgba(7, 9, 13, 0.62);
}

.metric-overlay span {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 9px 16px;
  color: #d6dbe3;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 650;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.metric-overlay span.alert {
  color: var(--red);
  background: rgba(251, 91, 100, 0.1);
  border-color: rgba(251, 91, 100, 0.28);
}

.metric-overlay span.warning {
  color: var(--orange);
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.28);
}

@media (max-width: 900px) {
  .feature-grid > .feature:nth-child(4),
  .feature-grid > .feature:nth-child(5) {
    grid-column: auto;
  }

  #qaFilters .filter-row {
    grid-template-columns: 1fr 1fr;
  }
}