/* Hallmark · macrostructure: Map / Diagram · tone: editorial field-notebook · anchor hue: warm red · contrast: pass · nav: inherited · footer: inherited · slop: pass (42–45)
 * Page 4: read the real map, then compare the reason and action of each crossing. */
body[data-page='4']{--header:env(safe-area-inset-top);--footer:calc(64px + env(safe-area-inset-bottom));--p4-paper:#fff;--p4-ink:#24292c;--p4-muted:#53616a;--p4-red:#942c2d;--p4-rule:#dce1e4;--p4-selected:#f9eded;--p4-panel:#f4f6f6;--p4-transparent:transparent;--p4-map-paper:#ffffed;--p4-rule-strong:#c5cfd2;--p4-red-soft:#f3e3e3}
body[data-page='4'] .deck-nav{display:none}
.slide.tactics-reading{background:var(--p4-paper);color:var(--p4-ink);padding:calc(18px + var(--header)) var(--gutter) var(--footer);grid-template-rows:min-content minmax(80px,1fr) min-content min-content min-content;gap:12px}
.tactics-reading>.tactics-heading{padding:0;min-height:min-content}
.tactics-reading .eyebrow{font:500 12px/1.5 var(--font-body);color:var(--p4-muted);letter-spacing:.04em;margin:0 0 8px}
.tactics-title{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.tactics-reading .tactics-title h2{display:block;font:700 clamp(32px,10.8vw,48px)/1.12 var(--entry-heading);color:var(--p4-ink);letter-spacing:.025em;white-space:nowrap}
.tactics-title>span{font-size:12px;line-height:1.5;white-space:nowrap;color:var(--p4-red)}
.tactics-reading .tactics-heading .tactics-plan{margin:10px 0 0;font-size:16px;line-height:1.65;color:var(--p4-ink);text-wrap:pretty}
.tactics-reading .tactics-map{background:var(--p4-paper);padding:0;display:grid;grid-template-rows:minmax(0,1fr) auto;gap:6px;min-height:0;max-height:calc((100vw - 2 * var(--gutter)) * .70978 + 34px);align-self:center;height:100%}
.tactics-reading .crossing-map-open{display:block;position:relative;width:100%;height:100%;min-height:0;padding:0;overflow:hidden;background:var(--p4-map-paper);border:0;border-radius:0;touch-action:manipulation}
.tactics-reading .crossing-map-open img{position:absolute;inset:0;width:100%;height:100%;max-width:none;object-fit:contain;object-position:center;transform:none}
.tactics-reading .crossing-map-open>span{position:absolute;right:8px;bottom:7px;font-size:11px;line-height:1.5;padding:3px 6px;color:var(--p4-red);background:var(--p4-paper);border:1px solid var(--p4-rule)}
.tactics-reading .tactics-map figcaption{font-size:11px;line-height:1.5;color:var(--p4-muted);display:block}
.tactics-reading .crossing-controls{border-top:0;border-bottom:1px solid var(--p4-rule);gap:0}
.tactics-reading .crossing-controls button{min-height:52px;display:flex;flex-direction:row;gap:6px;align-items:center;justify-content:center;border-bottom:2px solid var(--p4-transparent);color:var(--p4-muted);font-size:14px;background:var(--p4-transparent);padding:6px 0}
.tactics-reading .crossing-controls b{font:600 15px/1.5 var(--font-body);color:inherit}
.tactics-reading .crossing-controls small{font:400 11px/1.5 var(--font-body);color:inherit}
.tactics-reading .crossing-controls button[aria-pressed='true']{color:var(--p4-red);border-bottom-color:var(--p4-red);background:var(--p4-transparent)}
.tactics-reading .crossing-controls button[aria-pressed='true'] b,.tactics-reading .crossing-controls button[aria-pressed='true'] small{color:inherit}
.tactics-reading button:active{transform:none;background:var(--p4-selected)}
.tactics-reading button:focus-visible{outline:2px solid var(--p4-red);outline-offset:2px}
.tactics-reading .crossing-caption{margin:0;min-height:0;padding:12px 14px;background:var(--p4-panel);border:0}
.crossing-caption-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px}
.tactics-reading .crossing-caption h3{font:600 16px/1.5 var(--font-body);margin:0;color:var(--p4-red);letter-spacing:0}
.crossing-caption-head time{font-size:12px;line-height:1.5;white-space:nowrap;color:var(--p4-muted);font-variant-numeric:tabular-nums}
.tactics-reading .crossing-caption #crossing-place{font-size:12px;line-height:1.5;color:var(--p4-muted);margin:3px 0 9px}
.crossing-reason{display:grid;gap:5px}
.tactics-reading .crossing-reason p{display:grid;grid-template-columns:2em minmax(0,1fr);gap:8px;font-size:16px;line-height:1.65}
.crossing-reason strong{font-weight:500;color:var(--p4-muted)}
.tactics-onward{font-size:14px;line-height:1.6;color:var(--p4-ink);margin:0}
.tactics-onward span{color:var(--p4-muted)}
body[data-page='4'] .deck-footer{color:var(--p4-muted)}
body[data-page='4'] .progress-track{background:var(--p4-rule)}
body[data-page='4'] .progress-track i{background:var(--p4-red)}
body[data-page='4'] .deck-footer button{text-decoration-color:var(--p4-rule)}
@media(max-height:740px){.slide.tactics-reading{padding-top:calc(12px + var(--header));gap:8px}.tactics-reading .tactics-heading .tactics-plan,.tactics-reading .crossing-reason p{font-size:14px;line-height:1.5}.tactics-reading .eyebrow{margin-bottom:6px}.tactics-reading .crossing-controls button{min-height:44px}.tactics-reading .crossing-caption{padding:9px 10px}.tactics-reading .crossing-caption h3{font-size:14px}.tactics-reading .crossing-caption #crossing-place{margin-bottom:5px}.tactics-onward{font-size:14px;line-height:1.5}}
.slide.tactics-reading.page4-tight{padding-top:calc(8px + var(--header));gap:3px}
.page4-tight .tactics-plan{font-size:14px!important;line-height:1.45!important;margin-top:6px!important}
.page4-tight .tactics-title h2{font-size:30px!important}
.page4-tight .tactics-title>span{font-size:11px}
.page4-tight .eyebrow{margin-bottom:4px}
.page4-tight .tactics-map{gap:3px}
.page4-tight .tactics-map figcaption{font-size:10px;line-height:1.4}
.tactics-reading.page4-tight .crossing-caption{padding:6px 8px}
.page4-tight .crossing-caption-head time{font-size:11px}
.tactics-reading.page4-tight .crossing-caption #crossing-place{font-size:11px;line-height:1.4;margin:1px 0 4px}
.tactics-reading.page4-tight .crossing-reason p{font-size:14px;line-height:1.45;gap:6px}
.page4-tight .crossing-reason{gap:3px}
.page4-tight .tactics-onward{font-size:14px;line-height:1.45}
.tactics-reading .p4-compact{display:none}
.tactics-reading.page4-tight .p4-full{display:none}
.tactics-reading.page4-tight .p4-compact{display:inline;color:var(--p4-ink)}
.slide.tactics-reading.page4-tight{grid-template-rows:min-content minmax(110px,1fr) min-content min-content min-content}

/* map-led editorial polish: one reading path, one active cue, no new content */
.tactics-reading{background:linear-gradient(180deg,var(--p4-paper) 0%,var(--p4-panel) 100%);gap:10px;--p4-ease:cubic-bezier(.16,1,.3,1)}
.tactics-reading>.tactics-heading{position:relative;padding:7px 0 2px 13px;border-inline-start:2px solid var(--p4-red)}
.tactics-reading .eyebrow{margin-bottom:5px;letter-spacing:.08em;color:var(--p4-muted);text-wrap:pretty}
.tactics-title{align-items:flex-end;gap:10px}
.tactics-reading .tactics-title h2{letter-spacing:.01em;line-height:1.08;text-wrap:balance;overflow-wrap:anywhere}
.tactics-title>span{padding-bottom:2px;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.tactics-reading .tactics-heading .tactics-plan{max-width:34em;margin-top:8px;line-height:1.55;text-wrap:pretty}
.tactics-reading .tactics-map{gap:7px;padding-top:7px;border-block:1px solid var(--p4-rule-strong)}
.tactics-reading .crossing-map-open{outline:1px solid var(--p4-rule);outline-offset:-1px;background:var(--p4-map-paper)}
.tactics-reading .tactics-map figcaption{padding:0 2px;font-variant-numeric:tabular-nums}
.tactics-reading .crossing-controls{border-block:1px solid var(--p4-rule-strong);padding-top:3px}
.tactics-reading .crossing-controls button{position:relative;min-height:50px;padding:5px 0 6px;gap:1px;border-bottom:2px solid var(--p4-transparent);transition:color 180ms var(--p4-ease),background-color 180ms var(--p4-ease),border-color 180ms var(--p4-ease),transform 120ms var(--p4-ease)}
.tactics-reading .crossing-controls button::before{content:'';position:absolute;top:5px;left:50%;width:5px;height:5px;border-radius:50%;background:var(--p4-rule);transform:translateX(-50%);transition:background-color 180ms var(--p4-ease),transform 180ms var(--p4-ease)}
.tactics-reading .crossing-controls button[aria-pressed='true']{background:var(--p4-red-soft);border-bottom-color:var(--p4-red)}
.tactics-reading .crossing-controls button[aria-pressed='true']::before{background:var(--p4-red);transform:translateX(-50%) scale(1.25)}
.tactics-reading .crossing-controls button:active{transform:scale(.97)}
.tactics-reading .crossing-controls b{padding-top:3px;font-variant-numeric:tabular-nums}
.tactics-reading .crossing-controls small{letter-spacing:.04em}
.tactics-reading .crossing-caption{position:relative;padding:10px 12px 11px;background:var(--p4-paper);border-block:1px solid var(--p4-rule);border-inline-start:3px solid var(--p4-red);box-shadow:none}
.crossing-caption-head{gap:10px}
.tactics-reading .crossing-caption h3{color:var(--p4-ink);font-weight:700;text-wrap:balance}
.crossing-caption-head time{color:var(--p4-red);font-weight:600}
.tactics-reading .crossing-caption #crossing-place{margin:2px 0 8px;color:var(--p4-red);font-weight:500;text-wrap:pretty}
.crossing-reason{gap:0}
.tactics-reading .crossing-reason p{gap:9px;padding:4px 0;line-height:1.55;text-wrap:pretty}
.tactics-reading .crossing-reason p+p{border-top:1px solid var(--p4-rule)}
.crossing-reason strong{font-weight:700;letter-spacing:.06em;color:var(--p4-red);white-space:nowrap}
.tactics-onward{padding:5px 0 0 11px;border-inline-start:1px solid var(--p4-red);line-height:1.5;text-wrap:pretty}
.tactics-onward span{color:var(--p4-ink)}
@media(max-width:380px){.tactics-reading>.tactics-heading{padding-inline-start:10px}.tactics-reading .tactics-heading .tactics-plan{font-size:15px}.tactics-reading .crossing-controls button{min-height:46px}.tactics-reading .crossing-caption{padding-inline:10px}.tactics-reading .crossing-reason p{grid-template-columns:2.2em minmax(0,1fr);font-size:15px}}
@media(prefers-reduced-motion:reduce){.tactics-reading .crossing-controls button,.tactics-reading .crossing-controls button::before{transition:none}.tactics-reading .crossing-controls button:active{transform:none}}

/* Short screens reserve the map width by reducing decorative spacing. */
.tactics-reading.page4-tight>.tactics-heading{padding-block:0}
.tactics-reading.page4-tight .tactics-map{padding-top:0}
.tactics-reading.page4-tight .crossing-controls{padding-top:0}
.tactics-reading.page4-tight .crossing-controls button{min-height:44px}
.tactics-reading.page4-tight .crossing-reason p{padding-block:1px}
.tactics-reading.page4-tight .tactics-onward{padding-top:0}

/* Overview teaches a comparison; controls carry the operating hint. */
.tactics-reading[data-crossing-index='-1'] .crossing-caption{border-inline-start:0;padding-inline:0;background:var(--p4-transparent)}
.tactics-reading[data-crossing-index='-1'] .crossing-caption-head time{font-weight:400;color:var(--p4-muted)}
.tactics-reading[data-crossing-index='-1'] .crossing-reason p{grid-template-columns:2.2em minmax(0,1fr);padding-block:7px}
.tactics-reading[data-crossing-index='-1'] #crossing-place{color:var(--p4-muted)}
@media(max-height:740px){.tactics-reading[data-crossing-index='-1'] .crossing-reason p{padding-block:3px}}

@media(orientation:landscape) and (max-height:600px){
 .slide.tactics-reading,.slide.tactics-reading.page4-tight{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);grid-template-rows:auto auto minmax(0,1fr) auto;gap:6px 16px;padding-top:calc(6px + var(--header))}
 .tactics-reading>.tactics-heading{grid-column:1/3;grid-row:1}
 .tactics-reading .tactics-title h2{font-size:28px}
 .tactics-reading .eyebrow{display:none}
 .tactics-reading .tactics-heading .tactics-plan{font-size:14px;margin-top:3px}
 .tactics-reading .tactics-map{grid-column:1;grid-row:2/5;max-height:none;min-height:0;align-self:stretch}
 .tactics-reading .crossing-controls{grid-column:2;grid-row:2}
 .tactics-reading .crossing-caption{grid-column:2;grid-row:3;align-self:start;padding-block:4px}
 .tactics-reading .crossing-caption h3{font-size:14px}
 .tactics-reading .crossing-caption-head time{font-size:11px}
 .tactics-reading .crossing-caption #crossing-place{margin-bottom:3px;font-size:12px}
 .tactics-reading .crossing-reason p{font-size:14px;line-height:1.45;padding-block:2px}
 .tactics-reading .tactics-onward{grid-column:2;grid-row:4;font-size:13px}
}