:root {
  color-scheme: light dark;
  --cac-bg: #f4f7fa; --cac-surface: #fff; --cac-text: #172538; --cac-muted: #536277;
  --cac-border: #d4dee8; --cac-accent: #075f55; --cac-accent-ink: #fff; --cac-soft: #e6f2ef;
  --cac-warn: #8a4b08; --cac-focus: #0969da; --article-max: 74rem;
}html[data-reading-theme=dark]:not([data-theme="light"]):not([data-reading-theme="light"]){
    --cac-bg:#101821; --cac-surface:#182430; --cac-text:#eef4f8; --cac-muted:#b7c3cf;
    --cac-border:#354759; --cac-accent:#72d1bf; --cac-accent-ink:#0d2520; --cac-soft:#193a37;
    --cac-warn:#ffc078; --cac-focus:#8fc5ff;
  }
:root[data-theme="dark"], :root[data-reading-theme="dark"] {
  color-scheme:dark; --cac-bg:#101821; --cac-surface:#182430; --cac-text:#eef4f8; --cac-muted:#b7c3cf;
  --cac-border:#354759; --cac-accent:#72d1bf; --cac-accent-ink:#0d2520; --cac-soft:#193a37;
  --cac-warn:#ffc078; --cac-focus:#8fc5ff;
}
:root[data-theme="light"], :root[data-reading-theme="light"] { color-scheme:light; }
html { scroll-padding-top: 1.5rem; }
body { color: var(--cac-text); }
.guide-content.editorial-body { width:min(var(--article-max),calc(100% - 3rem)); margin-inline:auto; }
.article-header { max-width:60rem; margin:0 auto .9rem; padding:clamp(.7rem,2vw,1.5rem) 0 .2rem; }
.eyebrow,.byline { color:var(--cac-muted); }
.article-header h1 { max-width:19ch; margin:.2rem 0 .45rem; font-size:clamp(2rem,4vw,3.5rem); line-height:1.02; letter-spacing:-.035em; }
.article-header .dek { max-width:68ch; margin:0; color:var(--cac-muted); font-size:clamp(1rem,1.4vw,1.2rem); line-height:1.45; }
.cac-workspace { display:grid; grid-template-columns:minmax(0,1.05fr) minmax(20rem,.95fr); gap:.85rem; padding:clamp(.8rem,1.8vw,1.35rem); border:1px solid var(--cac-border); border-radius:1.15rem; background:var(--cac-surface); box-shadow:0 12px 36px rgb(25 43 62 / .09); }
.workspace-input h2 { margin:.05rem 0 .65rem; font-size:clamp(1.2rem,2vw,1.65rem); }
.quick-grid { display:grid; grid-template-columns:1fr 9.2rem; gap:.5rem .65rem; align-items:end; }
.quick-grid label { display:grid; gap:.22rem; min-width:0; color:var(--cac-muted); font-size:.82rem; font-weight:700; }
.quick-grid .wide { grid-column:1/-1; }
.quick-grid input,.quick-grid select,#record-import { box-sizing:border-box; width:100%; min-width:0; min-height:2.55rem; padding:.5rem .65rem; border:1px solid var(--cac-border); border-radius:.6rem; background:var(--cac-bg); color:var(--cac-text); font:inherit; }
.field-help { margin:.45rem 0 0; color:var(--cac-muted); font-size:.78rem; line-height:1.35; }
.workspace-result { display:flex; flex-direction:column; justify-content:center; min-width:0; padding:.9rem; border-radius:.85rem; background:var(--cac-soft); }
.result-topline { display:flex; justify-content:space-between; gap:.5rem; align-items:baseline; font-weight:750; }
#quick-cac-result { color:var(--cac-accent); font-size:clamp(2rem,4vw,3.1rem); line-height:1; font-variant-numeric:tabular-nums; }
#formula-line { margin:.35rem 0 .55rem; color:var(--cac-muted); font-size:.88rem; }
#reviewed-cost-composition { margin:0 0 .55rem; padding:.38rem .5rem; border-left:3px solid var(--cac-accent); background:color-mix(in srgb,var(--cac-surface) 65%,transparent); font-size:.78rem; line-height:1.35; }
.status-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:.45rem; margin:0; }
.status-grid dt { color:var(--cac-muted); font-size:.7rem; text-transform:uppercase; letter-spacing:.04em; }
.status-grid dd { margin:.1rem 0 0; font-size:.83rem; font-weight:750; overflow-wrap:anywhere; }
.next-action { margin:.5rem 0 .55rem; font-size:.84rem; line-height:1.35; }
.workspace-actions { display:flex; flex-wrap:wrap; gap:.4rem; }
.cac-workspace button,.image-dialog button { min-height:2.45rem; padding:.48rem .7rem; border:1px solid var(--cac-border); border-radius:.6rem; background:var(--cac-surface); color:var(--cac-text); font:inherit; font-weight:750; cursor:pointer; }
#load-worked-example,.primary { border-color:var(--cac-accent); background:var(--cac-accent); color:var(--cac-accent-ink); }
button:disabled { opacity:.5; cursor:not-allowed; }
:focus-visible { outline:3px solid var(--cac-focus); outline-offset:3px; }
.workspace-advanced { grid-column:1/-1; min-width:0; max-width:100%; border-top:1px solid var(--cac-border); padding-top:.65rem; }
.workspace-advanced summary,.contents summary { cursor:pointer; font-weight:750; }
.workspace-advanced > summary { box-sizing:border-box; min-height:44px; }
.workspace-advanced p { color:var(--cac-muted); }
#record-import { display:block; min-height:11rem; font-family:ui-monospace,SFMono-Regular,Consolas,monospace; font-size:.82rem; }
.import-status { min-height:1.4em; color:var(--cac-muted); font-size:.85rem; }
.record-summary { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:.55rem; margin:.7rem 0; }
.record-summary div { padding:.65rem; border:1px solid var(--cac-border); border-radius:.65rem; background:var(--cac-bg); }
.record-summary span { display:block; color:var(--cac-muted); font-size:.72rem; }
.record-summary strong { display:block; margin-top:.14rem; font-size:.92rem; overflow-wrap:anywhere; }
.advanced-record-view { min-width:0; max-width:100%; margin-top:1rem; }
.advanced-record-view > section { min-width:0; max-width:100%; margin-top:1.4rem; }
.advanced-record-view h3 { margin:0 0 .4rem; font-size:1.05rem; }
.advanced-record-view .table-wrap { box-sizing:border-box; width:100%; min-width:0; max-width:100%; max-height:23rem; overflow:auto; }
.advanced-record-view table { min-width:46rem; font-size:.82rem; }
.contents { margin:1.2rem 0 2rem; padding:.75rem 1rem; border:1px solid var(--cac-border); border-radius:.8rem; background:var(--cac-surface); }
.editorial-body .contents { position:static; top:auto; max-height:none; overflow:visible; }
.contents ol { columns:2; column-gap:2rem; margin:.7rem 0 .15rem; padding-left:1.3rem; }
.contents li { break-inside:avoid; margin:.4rem 0; }
.editorial-body > article > p,.editorial-body > article > ul,.editorial-body > article > ol,.editorial-body > article > h2,.editorial-body > article > h3,.editorial-body > article > pre,.editorial-body > article > .table-wrap { max-width:52rem; margin-inline:auto; }
.editorial-body article > h2 { margin-top:clamp(2rem,5vw,3.2rem); scroll-margin-top:1.5rem; }
.editorial-body article > h3 { margin-top:1.6rem; }
.editorial-body article > p,.editorial-body article li { line-height:1.7; }
.table-wrap { width:100%; overflow-x:auto; margin-block:1rem; border:1px solid var(--cac-border); border-radius:.75rem; }
table { width:100%; border-collapse:collapse; background:var(--cac-surface); text-align:left; }
th,td { padding:.72rem .8rem; border-bottom:1px solid var(--cac-border); vertical-align:top; }
th { background:var(--cac-soft); font-size:.9rem; }
.original-diagram { max-width:68rem; margin:1.2rem auto 1.7rem; }
.original-diagram button { display:block; width:100%; padding:0; border:0; background:transparent; cursor:zoom-in; }
.original-diagram img { display:block; width:100%; height:auto; border:1px solid var(--cac-border); border-radius:.8rem; background:#f7fafc; }
figcaption { margin-top:.45rem; color:var(--cac-muted); font-size:.88rem; }
.resource-kit { max-width:68rem; margin:2.5rem auto; }
.resource-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:.8rem; }
.resource-grid a { display:flex; flex-direction:column; gap:.35rem; min-width:0; padding:.9rem; border:1px solid var(--cac-border); border-radius:.75rem; background:var(--cac-surface); color:var(--cac-text); font-weight:750; }
.resource-grid span { color:var(--cac-muted); font-size:.85rem; font-weight:400; line-height:1.4; }
.image-dialog { width:min(94vw,76rem); max-width:none; max-height:92dvh; padding:1rem; border:1px solid var(--cac-border); border-radius:1rem; background:var(--cac-surface); color:var(--cac-text); }
.image-dialog::backdrop { background:rgb(5 12 20 / .8); }
.image-dialog__canvas { overflow:auto; max-height:73dvh; margin-top:.7rem; }
.image-dialog img { display:block; width:100%; height:auto; }
footer { padding:2rem 1rem; text-align:center; color:var(--cac-muted); }
@media (max-width:780px) {
  .editorial-page .editorial-body { padding-top:.5rem; }
  .editorial-page .article-header { margin-bottom:0; }
  .editorial-page .article-header .eyebrow,
  .editorial-page .article-header .byline { display:none; }
  .guide-content.editorial-body { width:min(100% - 1rem,var(--article-max)); }
  .article-header { padding:.45rem .2rem .15rem; }
  .article-header h1 { font-size:1.72rem; max-width:none; }
  .article-header .dek { font-size:.88rem; line-height:1.35; }
  .cac-workspace { grid-template-columns:1fr; gap:.35rem; padding:.65rem; border-radius:.85rem; }
  .workspace-input h2 { margin:0 0 .4rem; font-size:1.08rem; }
  .quick-grid { grid-template-columns:minmax(0,1fr) 9.5rem; gap:.35rem .45rem; }
  .quick-grid input,.quick-grid select { min-height:2.25rem; padding:.38rem .5rem; font-size:.9rem; }
  .field-help { display:none; }
  .workspace-result { padding:.45rem; }
  #quick-cac-result { font-size:2rem; }
  #formula-line { margin:.2rem 0 .3rem; }
  #reviewed-cost-composition { margin:0 0 .2rem; padding:.25rem .38rem; font-size:.7rem; line-height:1.25; }
  .status-grid { grid-template-columns:.72fr 1.28fr 1fr; gap:.3rem; }
  .status-grid dt { font-size:.62rem; }
  .status-grid dd { font-size:.74rem; }
  .workspace-result .next-action { margin:0; font-size:.75rem; line-height:1.25; }
  .quick-grid input,.quick-grid select,.cac-workspace button { min-height:2.75rem; }
  .cac-workspace button { padding:.42rem .55rem; font-size:.78rem; }
  .workspace-advanced { padding-top:.4rem; font-size:.8rem; }
  .contents ol { columns:1; }
  .record-summary { grid-template-columns:1fr 1fr; }
  .resource-grid { grid-template-columns:1fr; }
  .image-dialog__canvas img { width:60rem; max-width:none; }
}
@media (max-width:350px) {
  .editorial-page .article-header .dek { display:none; }
  .editorial-page .cac-workspace { width:calc(100% + 1.5rem); margin-left:-.75rem; }
  .article-header h1 { font-size:1.55rem; }
  .article-header .dek { font-size:.8rem; }
  .quick-grid { grid-template-columns:minmax(0,1fr) 9.5rem; }
  .workspace-actions { gap:.25rem; }
  .cac-workspace button { padding-inline:.45rem; font-size:.75rem; }
}
@media (max-width:600px) {
  .advanced-record-view table { min-width:0; }
  .advanced-record-view tbody,
  .advanced-record-view tr,
  .advanced-record-view td { box-sizing:border-box; max-width:100%; }
  .advanced-record-view td { overflow-wrap:anywhere; word-break:break-word; }
}
@media print { .workspace-actions,.contents,.image-dialog { display:none!important; } .cac-workspace { box-shadow:none; } }