/* AI Landscape · shared stylesheet
   Same paper/ink DNA as /buzzwords/ episode pages (Fraunces + JetBrains Mono,
   warm paper palette, signal/moss/plum strand colors) so that a diagram
   fragment embedded in a buzzwords story line reads as literally cropped
   from the same map when the reader clicks through to the full page here. */

:root{
 --paper:#f3ece0; --paper-deep:#ecdfca; --paper-warm:#ece1c4;
 --ink:#1c160f; --ink-soft:#3c2f22; --ink-mute:#6b5b48; --ink-faint:#9a8a72;
 --rule:#b8a890; --rule-soft:#d8c9af;
 --signal:#b8341b; --signal-deep:#8a2010; --signal-glow:#e85a3f;
 --moss:#4a5a2e; --moss-deep:#2f3d15;
 --plum:#5c2d4a; --plum-deep:#3a1b30;
 --gold:#a87a1a; --gold-deep:#7a5810;
 --teal:#1d5a6b; --teal-deep:#123f4a;
 --slate:#3d4f66; --slate-deep:#28374a;
 --serif-display:"Fraunces","Source Han Serif SC","Noto Serif SC","Songti SC",serif;
 --serif-body:"Source Serif 4","Source Han Serif SC","Noto Serif SC",Georgia,serif;
 --mono:"JetBrains Mono","SF Mono",Menlo,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
em,i{font-style:normal}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--serif-body);font-size:16.5px;line-height:1.7}
.wrap{max-width:1100px;margin:0 auto;padding:32px 44px 90px}
@media(max-width:760px){.wrap{padding:18px 18px 60px}}
a{color:var(--ink);text-decoration:none;border-bottom:1px solid var(--signal);padding-bottom:1px;transition:color .18s,background-color .18s}
a:hover{background:rgba(184,52,27,.12);color:var(--signal-deep)}

.masthead{border-top:5px double var(--ink);border-bottom:1px solid var(--ink);padding:22px 0 16px;display:grid;grid-template-columns:1fr auto 1fr;align-items:end;gap:18px}
.masthead .col{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-mute)}
.masthead .col.left{text-align:left}
.masthead .col.right{text-align:right}
.masthead .col .em{color:var(--ink)}
.masthead .title{text-align:center}
.masthead .latin{font-family:var(--serif-display);font-weight:600;font-size:11.5px;letter-spacing:.4em;text-transform:uppercase;color:var(--ink-mute);margin-bottom:4px}
.masthead h1{font-family:var(--serif-display);font-weight:400;font-size:clamp(28px,5vw,44px);letter-spacing:-.03em;line-height:.98}
.masthead h1 .amp{color:var(--signal);font-weight:700}
@media(max-width:760px){
  .masthead{grid-template-columns:1fr;gap:6px;text-align:center}
  .masthead .col.left,.masthead .col.right{text-align:center}
}

.backlink{display:inline-block;margin-bottom:10px;font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-mute);border-bottom:none}

.hero{padding:36px 0 30px;border-bottom:1px solid var(--ink)}
.hero .eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:var(--signal);margin-bottom:16px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.hero .eyebrow .hrule{flex:1;height:1px;background:var(--rule);min-width:30px}
.hero h1.name{font-family:var(--serif-display);font-weight:400;font-size:clamp(32px,6vw,60px);letter-spacing:-.04em;line-height:.98}
.hero .scope{margin-top:18px;font-family:var(--serif-display);font-weight:350;font-size:clamp(15px,1.8vw,19px);line-height:1.6;color:var(--ink-soft);max-width:76ch}
.hero .badges{margin-top:20px;display:flex;gap:10px;flex-wrap:wrap}
.badge{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;padding:5px 10px;border:1px solid var(--rule);color:var(--ink-mute);background:var(--paper-deep)}
.badge.hot{border-color:var(--signal);color:var(--signal-deep);background:rgba(184,52,27,.06)}

.tocnav{margin-top:22px;border:1.5px solid var(--ink);background:var(--paper-deep);padding:12px 18px;display:flex;flex-wrap:wrap;gap:6px 18px}
.tocnav a{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;color:var(--ink-soft);border-bottom:none}
.tocnav a:hover{color:var(--signal-deep);background:none}
.tocnav a::before{content:"· "}

.banner{margin-top:50px;margin-bottom:16px;padding-bottom:12px;border-bottom:1.5px solid var(--ink)}
.banner .frame{display:flex;align-items:baseline;gap:18px;flex-wrap:wrap}
.banner .step{font-family:var(--mono);font-size:11px;letter-spacing:.28em;text-transform:uppercase;color:var(--signal);padding-right:18px;border-right:1px solid var(--rule)}
.banner h2{font-family:var(--serif-display);font-weight:400;font-size:clamp(22px,3.6vw,32px);letter-spacing:-.025em;line-height:1.05}
.banner h2 em{color:var(--signal);font-weight:600}
.banner .meta{margin-top:10px;font-size:13.5px;color:var(--ink-mute);max-width:88ch}

.layer-role{font-size:14.5px;line-height:1.8;color:var(--ink-soft);max-width:88ch;margin-bottom:18px}
.layer-role strong{color:var(--ink)}

.dt-diagram{margin:20px 0;border:1.5px solid var(--ink);background:var(--paper-warm);padding:16px 18px 12px}
.dt-diagram svg{width:100%;height:auto;display:block;overflow:visible}
.dt-diagram .dcap{font-family:var(--mono);font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-mute);margin-top:8px;text-align:center}
@media(max-width:760px){
  .dt-diagram{padding:10px 0 8px;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .dt-diagram svg{width:720px;max-width:none;flex-shrink:0}
  .dt-diagram .dcap{padding:0 10px}
}

.playergrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px;margin-top:16px}
.player{border:1.5px solid var(--ink);background:var(--paper-deep);padding:14px 16px;scroll-margin-top:90px}
.player.hi{border-color:var(--signal);background:rgba(184,52,27,.06)}
.player .p-name{font-family:var(--serif-display);font-weight:600;font-size:16px;color:var(--ink);letter-spacing:-.01em}
.player .p-name a{border-bottom:none;color:inherit}
.player .p-name a:hover{color:var(--signal-deep);background:none}
.player .p-role{font-family:var(--mono);font-size:9.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--signal-deep);margin-top:4px}
.player .p-desc{font-size:13.5px;line-height:1.68;color:var(--ink-soft);margin-top:8px;overflow-wrap:anywhere}
.player .p-src{margin-top:8px;font-family:var(--mono);font-size:10px;color:var(--ink-mute)}
.player .p-src a{color:var(--ink-mute);border-bottom-color:var(--rule)}

.confmed{color:var(--moss-deep)}
.conflow{color:var(--ink-faint)}

.trendbox{border:1.5px solid var(--ink);background:var(--paper-warm);margin:18px 0;padding:14px 18px}
.trendbox h4{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--signal-deep);margin-bottom:10px}
.trendbox ol{padding-left:20px;font-size:13.5px;line-height:1.75;color:var(--ink-soft)}
.trendbox li{margin-bottom:6px}

.changelog{border:1.5px solid var(--ink);background:var(--paper-deep);margin-top:16px}
.changelog .cl-row{padding:12px 18px;border-bottom:1px dashed var(--rule);display:grid;grid-template-columns:90px 60px 1fr;gap:12px;font-size:13px}
.changelog .cl-row:last-child{border-bottom:none}
.changelog .cl-date{font-family:var(--mono);font-size:10.5px;color:var(--ink-mute)}
.changelog .cl-v{font-family:var(--mono);font-size:10.5px;color:var(--signal-deep);font-weight:700}
.changelog .cl-desc{color:var(--ink-soft);line-height:1.6}
@media(max-width:640px){.changelog .cl-row{grid-template-columns:1fr;gap:4px}}

.methodbox{font-size:13px;line-height:1.8;color:var(--ink-mute);max-width:88ch;margin-top:14px}

.hubgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;margin-top:24px}
.hubcard{display:block;border:1.5px solid var(--ink);background:var(--paper-deep);padding:22px 24px;transition:transform .15s}
.hubcard:hover{transform:translateY(-3px);background:var(--paper-deep)}
.hubcard .hc-eyebrow{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--signal);margin-bottom:8px}
.hubcard .hc-title{font-family:var(--serif-display);font-weight:600;font-size:22px;color:var(--ink);letter-spacing:-.01em;line-height:1.15}
.hubcard .hc-desc{font-size:13.5px;line-height:1.68;color:var(--ink-soft);margin-top:10px}
.hubcard .hc-meta{margin-top:12px;font-family:var(--mono);font-size:10px;color:var(--ink-mute);letter-spacing:.06em}

footer{margin-top:60px;padding-top:20px;border-top:1.5px solid var(--ink);font-family:var(--mono);font-size:11px;color:var(--ink-mute);letter-spacing:.04em}
footer a{color:var(--ink-mute)}

/* Signal feed (ai-industry-signals) — chronological log, not a layer/player graph.
   Five categories get five accent colors; filter chips are plain CSS + a few
   lines of vanilla JS toggling [data-cat] visibility, no framework. */
.sig-filters{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.sig-chip{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;padding:6px 12px;border:1.5px solid var(--rule);background:var(--paper-deep);color:var(--ink-mute);cursor:pointer;transition:all .15s}
.sig-chip:hover{border-color:var(--ink-mute)}
.sig-chip.active{border-color:var(--ink);color:var(--ink);background:var(--paper-warm)}

.sig-stats{display:flex;gap:14px;flex-wrap:wrap;margin:18px 0;padding:12px 18px;border:1.5px solid var(--ink);background:var(--paper-deep)}
.sig-stat{font-family:var(--mono);font-size:11px;color:var(--ink-mute);letter-spacing:.04em}
.sig-stat b{color:var(--ink);font-size:13px;margin-left:5px}

.sig-empty{margin-top:20px;padding:24px;border:1.5px dashed var(--rule);color:var(--ink-mute);font-size:13.5px;text-align:center}

.sig-feed{margin-top:8px;display:flex;flex-direction:column;gap:0}
.sig-entry{padding:16px 4px;border-bottom:1px dashed var(--rule);scroll-margin-top:90px}
.sig-entry:first-child{padding-top:8px}
.sig-hd{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.sig-cat{font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;padding:3px 8px;border:1px solid currentColor}
.sig-date{font-family:var(--mono);font-size:10.5px;color:var(--ink-mute)}
.sig-title{font-family:var(--serif-display);font-weight:600;font-size:17px;color:var(--ink);letter-spacing:-.01em;line-height:1.3}
.sig-detail{margin-top:6px;font-size:13.5px;line-height:1.68;color:var(--ink-soft);max-width:80ch}
.sig-src{margin-top:8px;font-family:var(--mono);font-size:10.5px}
.sig-src a{color:var(--ink-mute);border-bottom-color:var(--rule)}
.sig-ep{margin-left:12px;color:var(--ink-mute)!important;border-bottom-color:var(--rule)!important}

.sig-benchmark .sig-cat{color:var(--signal-deep);background:rgba(184,52,27,.06)}
.sig-repo .sig-cat{color:var(--moss-deep);background:rgba(74,90,46,.08)}
.sig-blog .sig-cat{color:var(--plum-deep);background:rgba(92,45,74,.07)}
.sig-expert .sig-cat{color:var(--gold-deep);background:rgba(168,122,26,.08)}
.sig-research .sig-cat{color:var(--teal-deep);background:rgba(29,90,107,.08)}
.sig-license .sig-cat{color:var(--slate-deep);background:rgba(61,79,102,.08)}

.sig-entry.sig-hidden{display:none}
@media(max-width:640px){.sig-hd{flex-wrap:wrap}}