.presbycusis-inline {
  --radius: 22px;
  --motion-fast: 180ms ease;
  --motion-medium: 280ms cubic-bezier(0.22, 1, 0.36, 1);
  --motion-slow: 420ms cubic-bezier(0.22, 1, 0.36, 1);
  --page-ink: #172326;
  --muted: #5b6a6d;
  --line: rgba(23, 35, 38, 0.12);
  --line-strong: rgba(23, 35, 38, 0.32);
  --panel: rgba(250, 246, 237, 0.82);
  --panel-strong: rgba(255, 251, 243, 0.92);
  --panel-border: rgba(255, 255, 255, 0.5);
  --panel-highlight: rgba(255, 255, 255, 0.24);
  --panel-inset: rgba(255, 255, 255, 0.62);
  --panel-shadow: 0 18px 48px rgba(44, 52, 46, 0.12);
  --accent: #0c7c78;
  --accent-strong: #095654;
  --accent-soft: rgba(12, 124, 120, 0.16);
  --warm: #d66f32;
  --button-active-shadow: 0 12px 22px rgba(9, 86, 84, 0.22);
  --surface-wash: rgba(255, 255, 255, 0.08);
  --surface-grid: rgba(23, 35, 38, 0.1);
  --surface-quad-stroke: rgba(255, 255, 255, 0.12);
  --surface-label: rgba(23, 35, 38, 0.72);
  --surface-label-strong: rgba(23, 35, 38, 0.82);
  --surface-highlight: rgba(255, 251, 244, 0.96);
  --surface-point-fill: #fff8ef;
  --surface-point-stroke: rgba(214, 111, 50, 0.9);
  --chart-grid: rgba(23, 35, 38, 0.12);
  --chart-band-label: rgba(23, 35, 38, 0.5);
  --chart-axis: rgba(23, 35, 38, 0.32);
  --chart-reference: rgba(23, 35, 38, 0.34);
  --chart-point-fill: #ffffff;
  color: var(--page-ink);
  font-family: inherit;
}

.presbycusis-inline * {
  box-sizing: border-box;
}

.presbycusis-inline .page-shell {
  width: 100%;
  margin: 0;
  container: presbycusis-shell / inline-size;
}

.presbycusis-inline .card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--panel-shadow);
  backdrop-filter: blur(14px);
  transition:
    background var(--motion-slow),
    border-color var(--motion-medium),
    box-shadow var(--motion-medium),
    color var(--motion-medium);
}

.presbycusis-inline .card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, var(--panel-highlight), transparent 42%);
}

.presbycusis-inline .controls,
.presbycusis-inline .panel {
  position: relative;
  z-index: 1;
}

.presbycusis-inline .controls {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 22px;
  align-items: center;
  padding: 18px 22px;
  margin-bottom: 18px;
}

.presbycusis-inline .control-block--ear {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.presbycusis-inline .control-block label,
.presbycusis-inline .control-label {
  display: block;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.presbycusis-inline .age-readout {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
  margin: 0 0 12px;
}

.presbycusis-inline .age-readout strong {
  font-size: 1.55rem;
}

.presbycusis-inline input[type="range"] {
  width: 100%;
  margin: 0;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  direction: ltr;
  --range-progress: 50%;
}

.presbycusis-inline input[type="range"]::-webkit-slider-runnable-track {
  height: 10px;
  border-radius: 999px;
  background:
    linear-gradient(
      90deg,
      color-mix(in srgb, var(--accent) 98%, white 2%) 0%,
      color-mix(in srgb, var(--accent) 82%, transparent 18%) var(--range-progress),
      var(--line) var(--range-progress),
      var(--line) 100%
    );
}

.presbycusis-inline input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin-top: -5px;
  border: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.95), transparent 34%),
    linear-gradient(
      135deg,
      color-mix(in srgb, var(--panel-strong) 92%, white 8%),
      color-mix(in srgb, var(--accent-soft) 26%, var(--panel-strong) 74%)
    );
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent 88%),
    0 6px 16px color-mix(in srgb, var(--accent) 22%, transparent 78%);
  cursor: pointer;
}

.presbycusis-inline input[type="range"]::-moz-range-track {
  height: 10px;
  border: 0;
  border-radius: 999px;
  background: var(--line);
}

.presbycusis-inline input[type="range"]::-moz-range-progress {
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 78%, transparent 22%));
}

.presbycusis-inline input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.95), transparent 34%),
    linear-gradient(
      135deg,
      color-mix(in srgb, var(--panel-strong) 92%, white 8%),
      color-mix(in srgb, var(--accent-soft) 26%, var(--panel-strong) 74%)
    );
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent 88%),
    0 6px 16px color-mix(in srgb, var(--accent) 22%, transparent 78%);
  cursor: pointer;
}

.presbycusis-inline .slider-extents {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--muted);
  direction: ltr;
}

.presbycusis-inline .control-panel {
  margin-top: 0;
  padding: 15px 16px 13px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--panel-strong) 82%, transparent 18%), color-mix(in srgb, var(--panel) 90%, transparent 10%)),
    radial-gradient(circle at top left, color-mix(in srgb, var(--accent) 8%, transparent 92%), transparent 42%);
  box-shadow: inset 0 1px 0 var(--panel-inset);
}

.presbycusis-inline .control-readout {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
}

.presbycusis-inline .control-readout--inline {
  flex-direction: row;
  align-items: baseline;
  gap: 7px;
}

.presbycusis-inline .control-readout strong {
  font-size: 1.18rem;
}

.presbycusis-inline .control-readout span,
.presbycusis-inline .age-readout span {
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--muted);
}

.presbycusis-inline .control-readout .control-unit {
  font-size: 0.74rem;
  line-height: 1;
  color: var(--muted);
  white-space: nowrap;
}

.presbycusis-inline .stepped-slider {
  margin-top: 2px;
}

.presbycusis-inline .stepped-slider-labels {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.presbycusis-inline .step-label {
  position: relative;
  text-align: center;
  color: var(--muted);
  opacity: 0.75;
  transition:
    color var(--motion-fast),
    transform var(--motion-fast),
    opacity var(--motion-fast);
}

.presbycusis-inline .step-label::before {
  content: "";
  display: block;
  width: 8px;
  height: 8px;
  margin: 0 auto 8px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--line-strong) 62%, transparent 38%);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--line) 48%, transparent 52%);
}

.presbycusis-inline .step-label strong {
  display: block;
}

.presbycusis-inline .step-label strong {
  font-size: 0.92rem;
  line-height: 1;
}

.presbycusis-inline .step-label.active {
  color: var(--accent-strong);
  opacity: 1;
  transform: translateY(-2px);
}

.presbycusis-inline .step-label.active::before {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 12%, transparent 88%);
}

.presbycusis-inline .ear-toggle-group {
  display: inline-grid;
  grid-template-columns: repeat(3, 44px);
  gap: 4px;
  width: fit-content;
  margin-top: 0;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--panel-strong) 86%, transparent 14%), color-mix(in srgb, var(--panel) 92%, transparent 8%)),
    radial-gradient(circle at top left, color-mix(in srgb, var(--accent) 8%, transparent 92%), transparent 42%);
  box-shadow: inset 0 1px 0 var(--panel-inset);
}

.presbycusis-inline .ear-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  min-height: 44px;
  min-width: 44px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--page-ink);
  font: inherit;
  cursor: pointer;
  transition:
    transform var(--motion-fast),
    background var(--motion-medium),
    border-color var(--motion-medium),
    box-shadow var(--motion-medium),
    color var(--motion-medium);
}

.presbycusis-inline .ear-toggle:hover {
  transform: translateY(-1px);
}

.presbycusis-inline .ear-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.presbycusis-inline .ear-toggle.active {
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.2), transparent 44%),
    linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: white;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 8px 18px rgba(9, 86, 84, 0.18);
}

.presbycusis-inline .ear-toggle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  line-height: 1;
}

.presbycusis-inline .ear-toggle-icon--left {
  transform: scaleX(-1);
}

.presbycusis-inline .ear-toggle-icon--paired {
  direction: ltr;
  gap: 1px;
}

.presbycusis-inline .ear-toggle-icon--paired > .ear-toggle-icon {
  font-size: inherit;
}

.presbycusis-inline .ear-toggle-icon--paired > span + span {
  margin-inline-start: -2px;
}

.presbycusis-inline .viz-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.presbycusis-inline .panel {
  padding: 16px 16px 14px;
  text-align: right;
}

.presbycusis-inline .panel-head {
  margin-bottom: 8px;
}

.presbycusis-inline h2 {
  margin: 0;
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--page-ink);
}

.presbycusis-inline #audiogram-chart {
  display: block;
  width: 100%;
  height: 350px;
}

.presbycusis-inline #surface-canvas {
  display: block;
  width: 100%;
  height: 390px;
  border-radius: 18px;
  cursor: grab;
  touch-action: none;
  background:
    radial-gradient(circle at top left, color-mix(in srgb, var(--accent) 14%, transparent 86%), transparent 36%),
    linear-gradient(180deg, color-mix(in srgb, var(--page-ink) 6%, transparent 94%), color-mix(in srgb, white 12%, transparent 88%));
}

.presbycusis-inline #surface-canvas.is-dragging {
  cursor: grabbing;
}

.presbycusis-inline .chart-grid line {
  stroke: var(--chart-grid);
  stroke-width: 1;
}

.presbycusis-inline .chart-severity-band {
  opacity: 0.78;
}

.presbycusis-inline .chart-severity-label {
  fill: var(--chart-band-label);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.presbycusis-inline .chart-grid text,
.presbycusis-inline .chart-axis text,
.presbycusis-inline .chart-legend text {
  fill: var(--muted);
  font-size: 12px;
}

.presbycusis-inline .chart-axis path,
.presbycusis-inline .chart-axis line {
  stroke: var(--chart-axis);
  stroke-width: 1.2;
}

.presbycusis-inline .chart-reference {
  fill: none;
  stroke: var(--chart-reference);
  stroke-width: 2;
  stroke-dasharray: 6 6;
}

.presbycusis-inline .chart-selected {
  fill: none;
  stroke: var(--warm);
  stroke-width: 3.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.presbycusis-inline .chart-point {
  fill: var(--chart-point-fill);
  stroke: var(--warm);
  stroke-width: 2.5;
}

.presbycusis-inline .chart-point.missing {
  display: none;
}

.presbycusis-inline .chart-selected-label {
  fill: var(--warm);
  font-size: 11px;
  font-weight: 700;
}

.presbycusis-inline .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  border: 0;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.presbycusis-inline__fallback {
  padding: 24px;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--panel-shadow);
  text-align: right;
}

.presbycusis-inline__fallback h2 {
  margin: 0 0 14px;
}

.presbycusis-inline__fallback p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

@container presbycusis-shell (max-width: 1080px) {
  .presbycusis-inline .controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .presbycusis-inline .age-block {
    grid-column: 1 / -1;
  }

  .presbycusis-inline .viz-grid {
    grid-template-columns: 1fr;
  }
}

@container presbycusis-shell (max-width: 780px) {
  .presbycusis-inline .controls {
    grid-template-columns: 1fr;
  }

  .presbycusis-inline .control-block--ear {
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
  }
}

@media (max-width: 1080px) {
  .presbycusis-inline .controls,
  .presbycusis-inline .viz-grid {
    grid-template-columns: 1fr;
  }

  .presbycusis-inline .control-block--ear {
    justify-content: space-between;
  }
}

@media (max-width: 720px) {
  .presbycusis-inline .controls,
  .presbycusis-inline .panel {
    padding: 18px;
  }

  .presbycusis-inline .control-block--ear {
    flex-wrap: wrap;
    gap: 10px;
  }

  .presbycusis-inline .ear-toggle {
    min-height: 40px;
    min-width: 40px;
  }

  .presbycusis-inline .ear-toggle-icon {
    font-size: 20px;
  }

  .presbycusis-inline #audiogram-chart,
  .presbycusis-inline #surface-canvas {
    height: 340px;
  }
}