/* Current V3 correction: one reference typography policy, a centered body,
   root navigation behavior, and three panels sharing their actual height. */
body.natural-case{--serif:"Noto Serif SC","Songti SC","STSong",serif;--sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB",system-ui,sans-serif;--mono:"JetBrains Mono",ui-monospace,Menlo,monospace;--latin:"Instrument Serif",Georgia,serif}
/* V4 .wrap owns width and padding. Only this header has a number gutter. */
body.natural-case .ch-grid{display:block}
body.natural-case .chapter-top{display:grid;grid-template-columns:104px minmax(0,1fr);column-gap:24px;align-items:start;margin-bottom:20px}
body.natural-case .chapter-top>.chapter-kicker{grid-column:1/-1;grid-row:1;font:600 11px/1.6 var(--mono);letter-spacing:.1em;margin:0 0 22px;max-width:none;color:var(--muted)}
body.natural-case .chapter-top>.ch-no{grid-column:1;grid-row:2;margin:0;padding:0}
body.natural-case .chapter-top>.case-title{grid-column:2;grid-row:2}
body.natural-case .ch-main{display:block;width:100%;max-width:none;margin-inline:0}
/* Direct values from root .s-head h2, .lead and body/.card p. The explicit
   roles prevent old compact-page declarations from resetting their fonts. */
body.natural-case .ch .case-title{font:900 clamp(28px,4vw,44px)/1.3 var(--serif)!important;max-width:none;margin:0;letter-spacing:normal;text-wrap:wrap}
body.natural-case .ch .case-subtitle{font:700 clamp(19px,2.2vw,25px)/1.6 var(--serif)!important;max-width:none;letter-spacing:normal}
body.natural-case .ch .case-copy{font:400 16px/1.75 var(--sans)!important;max-width:none;max-inline-size:none;text-align:start;text-wrap:wrap}
body.natural-case .ch .case-copy-card{font-size:15px!important}
/* Both comparison groups now center in the full wrap, as in V4. */
/* Header column 104px + gap 24px: use the same inset on both sides. */
body.natural-case #c3 .comparison-block{width:calc(100% - 256px);max-width:none;margin:18px 128px}
body.natural-case #c3 .ch-main>p{width:100%;max-width:none;margin-inline:0}
/* Original research structure requested in the latest screenshot. */
body.natural-case #c5 .discovery-module .res3{gap:0 16px;grid-auto-rows:auto}
body.natural-case #c5 .discovery-module .res{display:grid;grid-template-rows:subgrid;grid-row:span 6;padding:24px}
body.natural-case #c5 .discovery-module .res>.res-no{font:400 44px/1 var(--latin);margin:0;color:var(--rust)}
body.natural-case #c5 .discovery-module .res>h3{font:900 21px/1.4 var(--serif)!important;margin:6px 0 16px}
body.natural-case #c5 .discovery-module .res>.res-k{font:600 11px/1 var(--mono);margin:0 0 8px;letter-spacing:.12em}
body.natural-case #c5 .discovery-module .res-them{grid-template-rows:none;grid-auto-rows:max-content;align-self:start;height:auto;gap:6px}
body.natural-case #c5 .discovery-module .res-them li{padding:8px 10px;font:400 13.5px/1.75 var(--sans);min-height:0;height:auto}
body.natural-case #c5 .discovery-module .res-them b{font:700 14px/1.4 var(--serif)}
body.natural-case #c5 .discovery-module .res-arrow{font:400 26px/1 var(--serif);text-align:center;margin:10px 0}
/* Two shared rows: all labels on row one, all panel bottoms on row two.
   The stack of five exclusion slips fills the same panel height. */
body.natural-case #c4 .selection-loop{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-auto-rows:auto;gap:0 18px;align-items:stretch}
body.natural-case #c4 .selection-loop>.loop-stage{display:grid;grid-template-rows:subgrid;grid-row:span 2;min-width:0;gap:0}
body.natural-case #c4 .loop-stage>.loop-label{align-self:start;margin-bottom:12px}
body.natural-case #c4 .loop-stage>:last-child{align-self:stretch;min-height:0;height:auto;margin:0}
body.natural-case #c4 .exclusion-slips{display:grid;grid-template-rows:repeat(5,minmax(0,1fr));padding:0;align-content:stretch}
body.natural-case #c4 .exclusion-slips li{min-height:0;height:auto;align-self:stretch;align-items:center;padding:8px 10px}
body.natural-case #c4 .exclusion-slips li:nth-child(n){transform:none}
body.natural-case #c4 .review-notebook,body.natural-case #c4 .feedback-paper{padding-block:12px;overflow:hidden}
body.natural-case #c4 .feedback-paper{display:flex;flex-direction:column}
body.natural-case #c4 .feedback-paper>.feedback-entry:last-child{margin-top:auto}
@supports not (grid-template-rows:subgrid){
 body.natural-case #c4 .selection-loop>.loop-stage{display:flex;flex-direction:column;grid-row:auto}
 body.natural-case #c4 .loop-stage>:last-child{flex:1}
 body.natural-case #c5 .discovery-module .res{display:flex;grid-row:auto}
}
@media(max-width:900px){
 body.natural-case #c5 .discovery-module .res3{grid-template-columns:1fr;gap:16px}
 body.natural-case #c5 .discovery-module .res{display:flex;grid-row:auto;padding:20px}
 body.natural-case #c5 .discovery-module .res-me{min-height:0}
}
@media(max-width:720px){
 body.natural-case .chapter-top{grid-template-columns:1fr;column-gap:0}
 body.natural-case .chapter-top>.chapter-kicker{margin-bottom:15px}
 body.natural-case .chapter-top>.ch-no{grid-column:1;grid-row:2;margin-bottom:12px}
 body.natural-case .chapter-top>.case-title{grid-column:1;grid-row:3}
 body.natural-case #c4 .selection-loop{grid-template-columns:1fr;gap:22px}
 body.natural-case #c4 .exclusion-slips{grid-template-rows:none;grid-auto-rows:max-content}
 body.natural-case #c4 .loop-stage>:last-child{min-height:0}
}
/* The top navigation also uses root-page text/spacing, including italic name. */
body.natural-case .topbar{--sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB",system-ui,sans-serif;padding:22px 32px}
body.natural-case .topbar .who em{font:italic 15px/1 var(--latin);margin-left:4px}
@media(max-width:600px){body.natural-case .topbar{padding:16px}}

@media(max-width:720px){body.natural-case #c3 .comparison-block{width:100%;margin-inline:0}}
/* Latest global alignment: titles share the body edge; chapter numbers hang
   in the left margin. Narrow the centered content and reduce type by ~6%. */
body.natural-case .wrap{max-width:1000px;padding-inline:32px}
body.natural-case .chapter-top{display:block;position:relative;margin-bottom:20px}
body.natural-case .chapter-top>.chapter-kicker{font-size:10.5px;line-height:1.6;margin:0 0 20px}
body.natural-case .chapter-top>.case-title{display:block;font:900 clamp(26px,3.76vw,41px)/1.3 var(--serif)!important;margin:0}
body.natural-case .chapter-top>.ch-no{position:absolute;right:calc(100% + 24px);left:auto;top:36.8px;bottom:auto;width:max-content;font-size:60px;line-height:1;margin:0;padding:0}
body.natural-case .ch .case-subtitle{font:700 clamp(18px,2.07vw,23.5px)/1.6 var(--serif)!important}
body.natural-case .ch .case-copy{font-size:15px!important}
body.natural-case .ch .case-copy-card{font-size:14px!important}
body.natural-case .cover h1.pm-name{font-size:clamp(58px,7.33vw,100px)}
body.natural-case .cover .pm-what{font-size:clamp(28px,2.91vw,40.5px)}
body.natural-case .cover .sub{font-size:15px}
body.natural-case .cover .live-btn{font-size:14px}
body.natural-case #c5 .discovery-module .res>.res-no{font-size:41px}
body.natural-case #c5 .discovery-module .res>h3{font-size:19.75px!important}
body.natural-case #c5 .discovery-module .res-them li{font-size:13px}
body.natural-case #c5 .discovery-module .res-them b{font-size:13.25px}
body.natural-case .handoff .lab,body.natural-case #c2 .three-version-comparison .comparison-column>h3{font-size:10.5px}
/* Comparison images share the newly flush title/body edges. Range drag only. */
body.natural-case #c3 .comparison-block{width:100%;max-width:none;margin:18px 0}
@media(min-width:1700px){body.natural-case .wrap{max-width:1080px}}
@media(max-width:1139px) and (min-width:721px){
 body.natural-case .wrap{padding-inline:72px}
 body.natural-case .chapter-top>.ch-no{font-size:44px;right:calc(100% + 12px)}
}
@media(max-width:720px){
 body.natural-case .wrap{padding-inline:22px}
 body.natural-case .chapter-top>.ch-no{position:static;display:block;font-size:28px;width:auto;margin:0 0 10px}
 body.natural-case .chapter-top>.case-title{font-size:26px!important}
}
/* Approved follow-ups: give the positioning comparison the slogan-card surface. */
body.natural-case #c1 .comparison-wrap{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:0 22px 2px;overflow:hidden}
body.natural-case #c1 .difference{border:0}
body.natural-case #c1 .difference td:last-child{background:transparent}
/* A geometric arrow is centered by its box, independent of font baselines. */
body.natural-case #c3 .compare .handle::after{content:"";font-size:0;line-height:0}
body.natural-case #c3 .compare .handle::before{content:"";position:absolute;left:50%;top:50%;width:24px;height:12px;transform:translate(-50%,-50%);background:#fff;clip-path:polygon(0 50%,22% 0,22% 40%,78% 40%,78% 0,100% 50%,78% 100%,78% 60%,22% 60%,22% 100%);z-index:2;pointer-events:none}
/* Rotation is visual only: retain the shared rows and the panels' layout height. */
body.natural-case #c4 .exclusion-slips li:nth-child(n){transform:rotate(var(--slip-tilt));transform-origin:center}
body.natural-case #c4 .exclusion-slips li:nth-child(1){--slip-tilt:-.4deg}
body.natural-case #c4 .exclusion-slips li:nth-child(2){--slip-tilt:.5deg}
body.natural-case #c4 .exclusion-slips li:nth-child(3){--slip-tilt:-.25deg}
body.natural-case #c4 .exclusion-slips li:nth-child(4){--slip-tilt:.4deg}
body.natural-case #c4 .exclusion-slips li:nth-child(5){--slip-tilt:-.45deg}
/* Research is a concise evidence list: labels and descriptions share a line. */
body.natural-case #c5 .discovery-module .res{grid-template-rows:subgrid;grid-row:span 4;padding:20px}
body.natural-case #c5 .discovery-module .res-them{grid-template-rows:none;grid-auto-rows:max-content;gap:6px;align-self:start}
body.natural-case #c5 .discovery-module .res-them li{padding:7px 9px;line-height:1.8}
body.natural-case #c5 .discovery-module .res-them b{display:inline;font:700 13.25px/1.8 var(--serif);margin:0 6px 0 0;white-space:nowrap}
body.natural-case #c5 .search-summary{margin-block:32px}
@media(max-width:900px){body.natural-case #c5 .discovery-module .res{display:flex;grid-row:auto}}
@media(max-width:720px){
 body.natural-case #c1 .comparison-wrap{padding-inline:12px}
 body.natural-case #c3 .compare .handle::before{width:20px;height:10px}
}

/* Annotation 8–9: retain two future-scope cards using the first two approved fills. */
body.natural-case #c1 .scope-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
body.natural-case #c1 .scope-strip article:nth-child(1){background:#e9e5db}
body.natural-case #c1 .scope-strip article:nth-child(2){background:#f0dfd3}
@media(max-width:640px){body.natural-case #c1 .scope-strip{grid-template-columns:1fr}}

/* Research labels removed; keep three shared rows and a smaller, static layout comparison. */
body.natural-case #c5 .discovery-module .res{grid-row:span 3}
body.natural-case #c5 .curation-scenes{max-width:720px;margin-inline:0}
body.natural-case #c5 .curation-scenes h4{font:500 11px/1.6 var(--sans);color:var(--muted);margin:0 0 8px}
body.natural-case #c5 .discovery-module .composition-grid>span{aspect-ratio:2.35;font-size:16px}

/* User's wider red-frame reference: increase desktop content width by about 26%. */
body.natural-case .wrap{max-width:1240px}
@media(min-width:1700px){body.natural-case .wrap{max-width:1360px}}
@media(min-width:721px) and (max-width:1439px){
 body.natural-case .wrap{padding-inline:72px}
 body.natural-case .chapter-top>.ch-no{font-size:44px;right:calc(100% + 12px)}
}
/* Fill the available row; keep the comparison shallow as the row grows wider. */
body.natural-case #c5 .discovery-module .curation-scenes{max-width:none;gap:28px}
body.natural-case #c5 .discovery-module .composition-grid>span{aspect-ratio:auto;min-height:0;height:clamp(44px,4vw,64px)}

/* Reuse the accepted comparison controls with the shared accessible gallery. */
body.natural-case #c3 .comparison-tabs>[data-version-choices]{justify-content:flex-start;flex-direction:row;gap:8px;margin:18px 0 10px;flex-wrap:wrap}
body.natural-case #c3 .comparison-tabs>[data-version-choices][hidden]{display:none}
body.natural-case #c3 .comparison-tabs>[data-version-choices] button{min-height:44px;padding:9px 18px;font-size:14px;white-space:nowrap}
body.natural-case #c3 .comparison-tabs button[aria-selected="true"]{background:var(--rust-soft);border-color:#c88a72;color:#823c25}
body.natural-case #c3 .comparison-tabs button:hover:not([aria-selected="true"]){background:var(--card)}
body.natural-case #c3 .comparison-tabs [role="tabpanel"]:focus-visible{outline:2px solid var(--rust);outline-offset:4px}
body.natural-case #c3 .comparison-tabs>[data-version-panel]{margin:0}
body.natural-case #c3 .comparison-tabs>[data-version-panel][hidden]{display:none}
@media print{
 body.natural-case #c3 .comparison-tabs>[data-version-choices]{display:none!important}
 body.natural-case #c3 .comparison-tabs>[data-version-panel]{display:block!important;margin:18px 0}
}

/* 06 tool note: size the label column to its text rather than a fixed 130px. */
body.natural-case #c6 .cost{grid-template-columns:max-content minmax(0,1fr);gap:12px}
body.natural-case #c6 .cost>.lab{white-space:nowrap}
@media(max-width:720px){body.natural-case #c6 .cost{grid-template-columns:1fr;gap:8px}}