.tr-refresher {
  --tr-ink: var(--reader-ink, #20334f);
  --tr-muted: var(--reader-muted, #60718a);
  --tr-accent: var(--reader-accent, #245a9b);
  --tr-accent-soft: var(--reader-accent-soft, #e9f1fc);
  --tr-line: var(--reader-line, #dce4ee);
  --tr-paper: var(--reader-paper, #fff);
  --tr-soft: var(--reader-soft, #f4f7fb);
  --tr-residual: #6fa8e0;
  --tr-q: #e0a458;
  --tr-k: #5cc79e;
  --tr-v: #b39ddb;
  --tr-attention: #6bc4dd;
  --tr-mlp: #d99a6c;
  width: min(100%, 960px);
  margin: 26px 0 36px;
  overflow: clip;
  border: 1px solid var(--tr-line);
  border-radius: 6px;
  background: var(--tr-paper);
  box-shadow: 0 8px 24px rgba(28, 51, 79, .05);
  color: var(--tr-ink);
  font-family: var(--reader-font, system-ui, sans-serif);
}

.tr-refresher * { box-sizing: border-box; }
.tr-refresher button, .tr-refresher select { font: inherit; }
.tr-refresher button:focus-visible, .tr-refresher select:focus-visible, .tr-refresher summary:focus-visible, .tr-svg-node:focus-visible { outline: 3px solid color-mix(in srgb, var(--tr-accent) 35%, transparent); outline-offset: 2px; }
.tr-refresher-fallback { padding: 22px; }
.tr-refresher-fallback__label { margin: 0 0 5px !important; color: var(--tr-accent) !important; font: 750 .62rem/1.3 ui-monospace, SFMono-Regular, Consolas, monospace !important; letter-spacing: .09em; text-transform: uppercase; }

.tr-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 20px 15px; border-bottom: 1px solid var(--tr-line); }
.tr-heading-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.tr-heading-row h3 { margin: 0 !important; color: var(--tr-ink) !important; font-family: ui-serif, Georgia, Cambria, "Times New Roman", serif !important; font-size: 1.45rem !important; letter-spacing: -.025em; }
.tr-badge { padding: 4px 9px; border-radius: 999px; background: var(--tr-accent-soft); color: var(--tr-accent); font: 750 .56rem/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .07em; text-transform: uppercase; }
.tr-header p { margin: 4px 0 0 !important; color: var(--tr-muted) !important; font-size: .76rem !important; line-height: 1.45 !important; }
.tr-reset, .tr-footer button { min-height: 36px; padding: 0 14px; border: 1px solid var(--tr-line); border-radius: 5px; background: var(--tr-paper); color: var(--tr-ink); cursor: pointer; font-size: .7rem; }
.tr-reset:hover, .tr-footer button:hover:not(:disabled) { border-color: var(--tr-accent); color: var(--tr-accent); }

.tr-toolbar { border-bottom: 1px solid var(--tr-line); }
.tr-steps { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); margin: 0; padding: 13px 16px 11px; list-style: none; }
.tr-steps li { position: relative; min-width: 0; text-align: center; }
.tr-steps li:not(:last-child)::after { position: absolute; z-index: 0; top: 11px; left: calc(50% + 14px); width: calc(100% - 28px); height: 1px; background: var(--tr-line); content: ""; }
.tr-steps li.is-complete:not(:last-child)::after { background: color-mix(in srgb, var(--tr-accent) 52%, var(--tr-line)); }
.tr-steps button { position: relative; z-index: 1; width: 100%; padding: 0 2px; border: 0; background: transparent; color: var(--tr-muted); cursor: pointer; font-size: .54rem; line-height: 1.3; }
.tr-steps button span { display: grid; width: 23px; height: 23px; margin: 0 auto 5px; place-items: center; border: 1px solid color-mix(in srgb, var(--tr-muted) 38%, var(--tr-line)); border-radius: 50%; background: var(--tr-paper); color: var(--tr-muted); font: 700 .55rem/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.tr-steps li.is-complete button span { border-color: var(--tr-accent); background: var(--tr-accent); color: #07130c; }
.tr-steps li.is-active button { color: var(--tr-accent); font-weight: 750; }
.tr-steps li.is-active button span { border-color: var(--tr-accent); background: var(--tr-accent-soft); color: var(--tr-accent); box-shadow: 0 0 0 3px var(--tr-paper), 0 0 0 4px color-mix(in srgb, var(--tr-accent) 28%, transparent); }

.tr-parameters { border-top: 1px solid var(--tr-line); background: color-mix(in srgb, var(--tr-soft) 58%, var(--tr-paper)); }
.tr-parameters summary { padding: 8px 18px; color: var(--tr-accent); cursor: pointer; font: 750 .61rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .06em; text-transform: uppercase; }
.tr-parameter-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; padding: 0 18px 12px; }
.tr-parameter-grid label { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; min-width: 0; color: var(--tr-muted); font-size: .66rem; }
.tr-parameter-grid select { min-height: 32px; padding: 0 26px 0 9px; border: 1px solid var(--tr-line); border-radius: 4px; background: var(--tr-paper); color: var(--tr-ink); }

.tr-stage { padding: 16px 18px 18px; }
.tr-stage-heading { padding: 11px 14px; background: var(--tr-soft); }
.tr-step-count { margin: 0 0 3px !important; color: var(--tr-accent) !important; font: 750 .58rem/1.3 ui-monospace, SFMono-Regular, Consolas, monospace !important; letter-spacing: .08em; text-transform: uppercase; }
.tr-stage-heading h4 { margin: 0; color: var(--tr-ink); font-family: ui-serif, Georgia, Cambria, "Times New Roman", serif; font-size: 1.22rem; line-height: 1.2; letter-spacing: -.02em; }

.tr-shape-equation { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.tr-shape-equation > div { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-width: 0; padding: 9px 11px; border: 1px solid var(--tr-line); border-radius: 5px; }
.tr-shape-equation small { color: var(--tr-muted); font-size: .58rem; text-transform: uppercase; letter-spacing: .06em; }
.tr-shape-equation strong { display: flex; align-items: center; gap: 3px; color: var(--tr-ink); font: 700 .69rem/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; }
.tr-shape-dim { display: inline-grid; min-width: 21px; min-height: 21px; place-items: center; border-radius: 4px; }
.tr-shape-dim.is-changed { background: var(--tr-accent-soft); color: var(--tr-accent); animation: tr-dimension-change 520ms ease-out both; }
.tr-shape-comma { color: var(--tr-muted); }
.tr-head-equation strong { gap: 7px; }
.tr-head-segments { display: flex; width: 72px; height: 16px; overflow: hidden; border: 1px solid color-mix(in srgb, var(--tr-accent) 45%, var(--tr-line)); border-radius: 3px; }
.tr-head-segments i { flex: 1; background: color-mix(in srgb, var(--tr-accent) 16%, var(--tr-paper)); }
.tr-head-segments i + i { border-left: 1px solid color-mix(in srgb, var(--tr-accent) 40%, var(--tr-line)); }

.tr-diagram-wrap { margin-top: 12px; }
.tr-diagram-wrap svg { display: block; width: 100%; height: auto; }
.tr-svg-flow { fill: none; stroke: color-mix(in srgb, var(--tr-muted) 60%, var(--tr-line)); stroke-width: 1.35; marker-end: url(#tr-arrow); }
.tr-svg-highway { fill: none; stroke: var(--tr-residual); stroke-width: 4; }
.tr-diagram-wrap marker path { fill: color-mix(in srgb, var(--tr-muted) 72%, var(--tr-line)); }
.tr-svg-highway-label { fill: var(--tr-residual); font-size: 10px; font-weight: 750; letter-spacing: .04em; }
.tr-svg-branch-label { fill: var(--tr-muted); font-size: 10px; }
.tr-svg-node { cursor: pointer; opacity: .32; transition: opacity 180ms ease, transform 180ms ease; }
.tr-svg-node rect { fill: var(--tr-paper); stroke: var(--tr-line); }
.tr-svg-node.is-past { opacity: .62; }
.tr-svg-node.is-active { opacity: 1; }
.tr-svg-node.is-active rect { fill: var(--tr-accent-soft); stroke: color-mix(in srgb, var(--tr-accent) 55%, var(--tr-line)); }
.tr-svg-node.is-focused rect { stroke: var(--tr-accent); stroke-width: 2; }
.tr-svg-label { fill: var(--tr-ink); font-size: 11px; font-weight: 750; }
.tr-svg-q { fill: var(--tr-q); }
.tr-svg-k { fill: var(--tr-k); }
.tr-svg-v { fill: var(--tr-v); }
.tr-svg-shape { fill: var(--tr-muted); font: italic 9.5px/1 Georgia, Cambria, "Times New Roman", serif; }
.tr-focus-readout { margin: 2px 0 0 !important; color: var(--tr-muted) !important; font: .62rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace !important; text-align: center; }
.tr-mobile-flow { display: none; }

.tr-attention-explorer { margin-top: 14px; padding: 13px; border: 1px solid color-mix(in srgb, var(--tr-attention) 40%, var(--tr-line)); border-radius: 5px; background: color-mix(in srgb, var(--tr-attention) 4%, var(--tr-paper)); }
.tr-explorer-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.tr-explorer-heading p, .tr-mixing-comparison article > p { margin: 0 0 2px !important; color: var(--tr-attention) !important; font: 750 .57rem/1.3 ui-monospace, SFMono-Regular, Consolas, monospace !important; letter-spacing: .07em; text-transform: uppercase; }
.tr-explorer-heading h5, .tr-mixing-comparison h5 { margin: 0; color: var(--tr-ink); font-size: .78rem; }
.tr-explorer-heading > span { flex: none; padding: 3px 6px; border: 1px solid var(--tr-line); border-radius: 999px; color: var(--tr-muted); font-size: .52rem; }
.tr-token-row, .tr-head-row { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 10px; }
.tr-token-row button, .tr-head-row button { min-height: 28px; padding: 0 8px; border: 1px solid var(--tr-line); border-radius: 4px; background: var(--tr-paper); color: var(--tr-muted); cursor: pointer; font-size: .6rem; }
.tr-token-row button.is-selected, .tr-head-row button.is-selected { border-color: var(--tr-attention); background: color-mix(in srgb, var(--tr-attention) 11%, var(--tr-paper)); color: var(--tr-attention); font-weight: 750; }
.tr-attention-formula { display: flex; justify-content: space-between; gap: 12px; margin-top: 10px; padding: 8px 10px; background: var(--tr-soft); color: var(--tr-muted); font-size: .6rem; }
.tr-attention-formula strong { color: var(--tr-ink); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.tr-weight-grid { display: grid; grid-template-columns: repeat(var(--token-count), minmax(0, 1fr)); gap: 4px; height: 105px; margin-top: 9px; }
.tr-weight-grid > div { position: relative; display: flex; min-width: 0; flex-direction: column; justify-content: space-between; overflow: hidden; padding: 6px 2px; border: 1px solid color-mix(in srgb, var(--tr-attention) calc(18% + var(--weight) * 62%), var(--tr-line)); border-radius: 3px; background: color-mix(in srgb, var(--tr-attention) calc(3% + var(--weight) * 19%), var(--tr-paper)); color: var(--tr-muted); font-size: .51rem; text-align: center; }
.tr-weight-grid > div.is-masked { opacity: .38; border-style: dashed; background: var(--tr-soft); }
.tr-weight-grid span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tr-weight-grid b { position: relative; z-index: 1; font-size: .5rem; }
.tr-weight-grid i { position: absolute; right: 0; bottom: 0; left: 0; background: color-mix(in srgb, var(--tr-attention) 28%, transparent); }
.tr-value-note { margin: 9px 0 0 !important; color: var(--tr-muted) !important; font-size: .63rem !important; line-height: 1.5 !important; }
.tr-value-note strong { color: var(--tr-ink); }

.tr-mixing-comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
.tr-mixing-comparison article { padding: 12px; border: 1px solid var(--tr-line); border-radius: 5px; }
.tr-mixing-comparison article:last-child > p { color: var(--tr-mlp) !important; }
.tr-token-mix, .tr-feature-mix { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin: 10px 0 7px; }
.tr-token-mix span, .tr-feature-mix span { display: grid; min-height: 28px; padding: 0 9px; place-items: center; border: 1px solid var(--tr-line); border-radius: 4px; background: var(--tr-soft); color: var(--tr-ink); font: 650 .58rem/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.tr-token-mix span:first-child { border-color: var(--tr-attention); color: var(--tr-attention); }
.tr-feature-mix span:nth-of-type(2) { border-color: var(--tr-mlp); color: var(--tr-mlp); }
.tr-token-mix b, .tr-feature-mix b { color: var(--tr-muted); font-weight: 500; }
.tr-mixing-comparison small { color: var(--tr-muted); font-size: .59rem; line-height: 1.45; }

.tr-explanation { padding: 0 18px 16px; }
.tr-explanation dl { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; border: 1px solid var(--tr-line); border-radius: 5px; }
.tr-explanation dl > div { min-width: 0; padding: 10px 11px; }
.tr-explanation dl > div + div { border-left: 1px solid var(--tr-line); }
.tr-explanation .tr-why { grid-column: 1 / -1; border-top: 1px solid var(--tr-line); border-left: 0; }
.tr-explanation dt { margin-bottom: 4px; color: var(--tr-accent); font: 750 .55rem/1.3 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .07em; text-transform: uppercase; }
.tr-explanation dd { margin: 0; color: var(--tr-muted); font-size: .64rem; line-height: 1.48; }

.tr-footer { display: grid; grid-template-columns: 105px 105px 1fr 105px; gap: 8px; align-items: center; padding: 10px 18px; border-top: 1px solid var(--tr-line); background: color-mix(in srgb, var(--tr-soft) 58%, var(--tr-paper)); }
.tr-footer button[data-action="play"] { border-color: color-mix(in srgb, var(--tr-accent) 50%, var(--tr-line)); color: var(--tr-accent); }
.tr-footer button:disabled { cursor: default; opacity: .4; }
.tr-status { margin: 0 !important; color: var(--tr-muted) !important; font: .61rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace !important; text-align: center; }

@keyframes tr-dimension-change { from { box-shadow: 0 0 0 0 color-mix(in srgb, var(--tr-accent) 35%, transparent); transform: translateY(-2px); } to { box-shadow: 0 0 0 5px transparent; transform: translateY(0); } }

@media (max-width: 760px) {
  .tr-steps { grid-template-columns: repeat(4, minmax(0, 1fr)); row-gap: 10px; }
  .tr-steps li:nth-child(4)::after { display: none; }
  .tr-parameter-grid { grid-template-columns: 1fr; }
  .tr-shape-equation { grid-template-columns: 1fr; }
  .tr-diagram-wrap { display: none; }
  .tr-mobile-flow { display: grid; gap: 6px; margin-top: 12px; }
  .tr-mobile-flow button { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 10px; min-height: 42px; padding: 7px 10px; border: 1px solid var(--tr-line); border-radius: 5px; background: var(--tr-paper); color: var(--tr-ink); text-align: left; }
  .tr-mobile-flow button.is-focused { border-color: var(--tr-accent); background: var(--tr-accent-soft); }
  .tr-mobile-flow small { color: var(--tr-muted); font: .58rem/1.3 ui-monospace, SFMono-Regular, Consolas, monospace; }
  .tr-mobile-flow b { color: var(--tr-muted); font-weight: 400; text-align: center; }
  .tr-focus-readout { text-align: left; }
  .tr-explanation dl { grid-template-columns: 1fr 1fr; }
  .tr-explanation dl > div:nth-child(3) { border-top: 1px solid var(--tr-line); border-left: 0; }
  .tr-explanation dl > div:nth-child(4) { border-top: 1px solid var(--tr-line); }
}

@media (max-width: 520px) {
  .tr-header { align-items: flex-start; padding-inline: 14px; }
  .tr-heading-row { align-items: flex-start; flex-direction: column; gap: 5px; }
  .tr-reset { min-height: 42px; }
  .tr-stage, .tr-explanation { padding-inline: 12px; }
  .tr-steps { padding-inline: 8px; }
  .tr-steps button { min-height: 44px; font-size: .51rem; }
  .tr-explorer-heading { display: grid; }
  .tr-explorer-heading > span { justify-self: start; }
  .tr-attention-formula { flex-direction: column; }
  .tr-weight-grid { gap: 2px; }
  .tr-weight-grid > div { padding-inline: 1px; }
  .tr-weight-grid span { display: none; }
  .tr-weight-grid > div.is-masked b { font-size: 0; }
  .tr-weight-grid > div.is-masked b::after { content: "×"; font-size: .55rem; }
  .tr-mixing-comparison { grid-template-columns: 1fr; }
  .tr-explanation dl { grid-template-columns: 1fr; }
  .tr-explanation dl > div + div, .tr-explanation dl > div:nth-child(3), .tr-explanation dl > div:nth-child(4) { border-top: 1px solid var(--tr-line); border-left: 0; }
  .tr-footer { grid-template-columns: 1fr 1fr 1fr; padding-inline: 12px; }
  .tr-footer button { min-height: 44px; padding-inline: 8px; }
  .tr-status { grid-column: 1 / -1; grid-row: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .tr-svg-node { transition: none; }
  .tr-shape-dim.is-changed { animation: none; }
}

@media (prefers-color-scheme: dark) {
  .tr-refresher {
    --tr-ink: #eef2ea;
    --tr-muted: #9aa79a;
    --tr-accent: #63e68c;
    --tr-accent-soft: rgba(99, 230, 140, .12);
    --tr-line: #232922;
    --tr-paper: #12160f;
    --tr-soft: #0e120d;
    --tr-residual: #6fa8e0;
    box-shadow: none;
  }
}

[data-theme="dark"] .tr-refresher {
  --tr-ink: #eef2ea;
  --tr-muted: #9aa79a;
  --tr-accent: #63e68c;
  --tr-accent-soft: rgba(99, 230, 140, .12);
  --tr-line: #232922;
  --tr-paper: #12160f;
  --tr-soft: #0e120d;
  --tr-residual: #6fa8e0;
  box-shadow: none;
}

@media print {
  .tr-reset, .tr-toolbar, .tr-footer, .tr-attention-explorer { display: none !important; }
  .tr-refresher { break-inside: avoid; box-shadow: none; }
}