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.optimizer-lede {font-size:1.12rem;line-height:1.8;color:var(--ink-muted)}
.training-note h2,.training-note h3 {scroll-margin-top:10rem}
.training-note .post-series-nav{display:flex;gap:1rem;justify-content:space-between;flex-wrap:wrap}
.training-note figure{margin:2rem 0;padding:1rem;border:1px solid var(--line);border-radius:16px;background:var(--card)}
.training-note figure img{display:block;width:100%;height:auto}
.training-note figcaption{font-size:.85rem;color:var(--ink-muted);margin-top:.8rem;line-height:1.7}
.training-lab{margin:2rem 0;padding:1.3rem;border:1px solid var(--brand);border-radius:16px;background:var(--card);min-width:0}
.training-lab h3{margin-top:0}
.opt-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.85rem;margin:1rem 0}
.opt-controls label{display:flex;flex-direction:column;gap:.35rem;font-size:.8rem;font-weight:700}
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.opt-actions{display:flex;gap:.5rem;flex-wrap:wrap;margin:1rem 0}
.training-lab button{background:var(--brand);color:white;border:0;border-radius:7px;padding:.6rem .85rem;font:inherit;font-size:.85rem;cursor:pointer}
.training-lab button:disabled{opacity:.5;cursor:default}
.training-lab button:focus-visible,.opt-controls input:focus-visible,.opt-controls select:focus-visible{outline:3px solid #cf8125;outline-offset:3px}
.opt-plots{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.opt-plots svg,.opt-wide-svg{width:100%;height:auto;display:block;background:#fbfaf6;border-radius:10px;color:#173d35}
.opt-readout{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.65rem;margin-top:1rem;font-size:.8rem}
.opt-readout div{border:1px solid var(--line);border-radius:8px;padding:.65rem;min-width:0;overflow-wrap:anywhere}
.opt-readout span{display:block;color:var(--ink-muted);margin-bottom:.3rem}
.opt-readout strong{font-variant-numeric:tabular-nums;font-family:monospace;font-size:.9rem}
.opt-status{display:block;font-size:.85rem;line-height:1.7;border-left:3px solid var(--brand);padding:.4rem .8rem;margin:.8rem 0}
.training-note pre{max-width:100%;overflow:auto;font-size:.85rem;line-height:1.7}
.training-note .note-table{max-width:100%;overflow-x:auto}
.training-note .note-table table{width:100%;border-collapse:collapse}
.training-note th,.training-note td{padding:.7rem;text-align:left;border-bottom:1px solid var(--line)}
.optimizer-chapter{display:flex;gap:1rem;padding:1.2rem 0;border-bottom:1px solid var(--line)}
.optimizer-chapter>span{font-size:1.4rem;font-weight:800;color:var(--brand)}
.optimizer-chapter p{margin:.3rem 0;font-size:.9rem}.optimizer-chapter small{display:block;color:var(--ink-muted)}
.training-note .self-check{border-top:1px solid var(--line);padding:.9rem 0}
.training-note .self-check p{margin:.5rem 0}
.opt-equation{overflow-x:auto;max-width:100%;padding:.6rem .2rem}
@media(max-width:700px){.opt-plots{grid-template-columns:1fr}.training-lab{padding:.8rem}.training-note figure{padding:.5rem}.opt-controls{grid-template-columns:1fr 1fr}.opt-readout{grid-template-columns:1fr 1fr}.training-note .post-series-nav{font-size:.8rem}.training-note h2,.training-note h3{scroll-margin-top:11rem}}
@media(prefers-reduced-motion:reduce){.training-note *{scroll-behavior:auto;transition:none!important}}
.opt-matrix-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.7rem;margin:1rem 0}
.opt-matrix-card{min-width:0;border:1px solid var(--line);border-radius:10px;padding:.6rem}
.opt-matrix-card h4{font-size:.9rem;margin:.2rem 0 .5rem}.opt-matrix-card svg{width:100%;height:auto;display:block;background:#fbfaf6}
.opt-matrix-card pre{font-size:.75rem;margin:.5rem 0;line-height:1.7;background:transparent;padding:.2rem;white-space:pre-wrap}
@media(max-width:850px){.opt-matrix-grid{grid-template-columns:1fr}.opt-matrix-card svg{max-width:350px;margin:auto}}
/* Keep absolutely positioned KaTeX accessibility markup inside scrollers. */
.training-note .note-table,.training-note .opt-equation{position:relative}
.opt-figure-pan,.opt-chart-pan{overflow-x:auto;max-width:100%;position:relative}
.opt-scroll-hint{display:none}
@media(max-width:600px){
  .opt-figure-pan img{min-width:650px}
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  .opt-scroll-hint{display:block;font-size:.75rem;color:var(--ink-muted);margin:.3rem 0}
}
.training-note .opt-matrix-card pre{color:var(--ink,#173d35)}

.training-note .lab-legend{font-size:.8rem}.training-lab .opt-readout strong{white-space:pre-wrap}.training-lab svg{overflow:hidden}.training-note .katex{position:relative}
.svg-math{display:flex;align-items:center;justify-content:center;width:100%;height:100%;font-size:13px;line-height:1;color:#173d35;white-space:nowrap;box-sizing:border-box}
.svg-math.left{justify-content:flex-start}
.svg-math .katex{font-size:1em}