.classification { max-width: 860px; margin: 0 auto; }
.classification, .classification * { box-sizing: border-box; }
.classification h1 { font-size: 22px; line-height: 1.25; margin: 4px 0 8px; }
.classification h2 { font-size: 17px; line-height: 1.35; margin: 0 0 8px; }
.classification p { margin: 8px 0; }
.classification .muted { color: var(--ink2); }
.classification .small { font-size: 14px; }
.classification .controls, .classification .steps { display: grid; gap: 12px; margin: 18px 0; }
.classification .controls { grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr)); }
.classification .control, .classification .step, .classification .panel { min-width: 0; padding: 14px; border: 1px solid var(--line); border-radius: 6px; }
.classification .control { background: var(--color-background-secondary); }
.classification label { display: flex; justify-content: space-between; gap: 10px; }
.classification label output { color: var(--amber); font-weight: 650; white-space: nowrap; }
.classification input[type=range] { width: 100%; display: block; margin: 8px 0 0; }
.classification .buttons { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.classification .buttons button[aria-pressed=true] { border-color: var(--amber); color: var(--amber); }
.classification .equation { font-family: var(--mono); font-size: 15px; line-height: 1.7; overflow-wrap: anywhere; }
.classification .equation .line { display: block; }
.classification .result { font-size: 24px; font-weight: 650; color: var(--teal); margin-top: 6px; }
.classification .number { color: var(--amber); font-variant-numeric: tabular-nums; }
.classification .rule { border-left: 3px solid var(--amber); padding: 2px 0 2px 12px; margin: 16px 0; }
.classification .legend { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 14px; margin: 8px 0; }
.classification .key::before { content: ''; display: inline-block; width: 18px; height: 3px; vertical-align: middle; margin-right: 6px; background: currentColor; }
.classification .negative { color: var(--blue); }
.classification .positive { color: var(--teal); }
.classification .cutoff { color: var(--amber); }
.classification svg { width: 100%; overflow: visible; }
.classification svg text { fill: var(--ink2); font-family: var(--sans); font-size: 13px; }
.classification svg .axis { stroke: var(--ink3); stroke-width: 1; }
.classification svg .grid { stroke: var(--line); stroke-width: 1; }
.classification svg .curve { fill: none; stroke-width: 2.5; }
.classification svg .marker { stroke: var(--card); stroke-width: 2; fill: var(--amber); }
.classification .charts { display: grid; gap: 18px; margin: 18px 0; }
.classification .chart { min-width: 0; }
.classification table { width: 100%; border-collapse: collapse; table-layout: fixed; font-size: 14px; margin: 12px 0; }
.classification th, .classification td { padding: 10px 7px; border: 1px solid var(--line); text-align: left; overflow-wrap: break-word; vertical-align: top; }
.classification th { font-weight: 600; background: var(--color-background-secondary); }
.classification td strong { display: block; font-size: 19px; margin: 4px 0; color: var(--ink); }
.classification .rates { display: grid; grid-template-columns: repeat(auto-fit,minmax(min(100%,155px),1fr)); gap: 12px; margin: 16px 0; }
.classification .rates .panel { padding: 10px 12px; }
.classification .rate { font-size: 24px; display: block; color: var(--amber); }
.classification details { border-top: 1px solid var(--line); margin-top: 18px; padding-top: 12px; }
.classification summary { cursor: pointer; color: var(--ink2); }
@media (min-width: 720px) {
  .classification .steps { grid-template-columns: 1fr 1fr 1fr; }
}
@media (max-width: 380px) {
  .classification .control, .classification .step, .classification .panel { padding: 11px; }
  .classification th, .classification td { padding: 7px 5px; font-size: 13px; }
}