/* solve.nexus — shares the selfdriven.institute look: split hero, stats strip, tile grid, dark layers panel, orange banner, ink footer */
:root{
	--paper:#ffffff;
	--surface:#f6f5f7;
	--ink:#24202a;
	--muted:#625c65;
	--line:#e6e3e7;
	--orange:#de5a31;
	--orange-hover:#b53e1a;
	--panel:#222025;
	--panel-hover:#302b35;
	--button-bg:#24202a;
	--button-fg:#ffffff;
	--footer-bg:#24202a;
	--footer-fg:#e3dfe7;
	--on-orange:#201922;
	--tile-dark:#27232e;
	--tile-green:#286647;
	--tile-lilac:#b8a8f0;
	--orange-on-dark:#f0805c;
	--font-mono:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
	--font-display:'Space Grotesk','Helvetica Neue',Arial,sans-serif;
	--font-body:'DM Sans','Helvetica Neue',Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
	:root:not([data-theme="light"]){
		--paper:#141217;--surface:#1c1a20;--ink:#f1eef3;--muted:#b3acb7;--line:#2e2a33;
		--orange:#e8673f;--orange-hover:#f08a68;--panel:#1f1c23;--panel-hover:#2a2630;
		--button-bg:#f1eef3;--button-fg:#141217;--footer-bg:#0c0b0e;--footer-fg:#d9d4dd;
		color-scheme:dark;
	}
}
:root[data-theme="dark"]{
	--paper:#141217;--surface:#1c1a20;--ink:#f1eef3;--muted:#b3acb7;--line:#2e2a33;
	--orange:#e8673f;--orange-hover:#f08a68;--panel:#1f1c23;--panel-hover:#2a2630;
	--button-bg:#f1eef3;--button-fg:#141217;--footer-bg:#0c0b0e;--footer-fg:#d9d4dd;
	color-scheme:dark;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 var(--font-body)}
a{color:inherit;text-underline-offset:5px}
a:hover{color:var(--orange-hover)}
a:focus-visible{outline:3px solid var(--orange);outline-offset:5px}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.08;letter-spacing:-.045em;text-wrap:balance}
h1{font-size:clamp(3rem,5.6vw,5.8rem);margin:22px 0}
h1 span,h2 span{color:var(--orange)}
h2{font-size:clamp(2rem,3.3vw,3.4rem);margin:0 0 22px}
h3{font-size:1.35rem}
p{margin:0 0 24px}
img{max-width:100%}
.arrow-icon{display:inline-block;width:1.15em;height:1.15em;flex:0 0 auto;vertical-align:-.15em;overflow:visible}

/* Skip link */
.skip{position:absolute;left:20px;top:-70px;z-index:5;background:var(--paper);color:var(--ink);padding:12px}
.skip:focus{top:10px}

/* Header */
.header{max-width:1440px;margin:auto;padding:30px 5%;display:flex;align-items:center;justify-content:space-between;gap:30px;border-bottom:1px solid var(--line)}
.logo img{width:214px;max-width:100%;height:auto;display:block}
.nav{display:flex;gap:30px;flex-wrap:wrap}
.nav a{text-decoration:none;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:4px}

/* Main */
.main-content{max-width:1440px;margin:auto;padding:55px 5% 70px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.16em;margin-bottom:16px;text-transform:uppercase}
.intro{font-size:19px;line-height:1.65;color:var(--muted);max-width:34em}
.text-link{font-weight:500}

/* Buttons */
.button{display:inline-flex;align-items:center;justify-content:space-between;gap:20px;min-height:52px;max-width:100%;background:var(--button-bg);color:var(--button-fg);padding:16px 23px;border-radius:6px;text-decoration:none;font-weight:600;transition:background .2s,color .2s}
.button:hover{background:var(--orange);color:#fff}
.button .arrow-icon{width:20px;height:20px}

/* Hero */
.hero{display:grid;grid-template-columns:1fr 1fr;gap:5%;align-items:center}
.hero-copy{min-width:0}
.hero-copy>.text-link{display:block;margin-top:18px;font-size:14px}
.hero-media{min-width:0}
.hero-art{position:relative;display:flex;flex-direction:column;justify-content:space-between;min-height:470px;background:var(--panel);color:#fff;border-radius:12px;overflow:hidden;text-decoration:none;isolation:isolate}
.hero-art:hover{color:#fff;background:var(--panel-hover)}
.hero-art .ward{position:absolute;inset:0;z-index:0;display:block}
.hero-art .ward svg{width:100%;height:100%;display:block}
.hero-photo{position:absolute;inset:0;z-index:1;width:100%;height:100%;object-fit:cover;object-position:center;transition:transform .5s ease}
.hero-art:hover .hero-photo{transform:scale(1.03)}
.hero-art::after{content:"";position:absolute;inset:0;z-index:2;background:linear-gradient(180deg,rgba(18,16,20,.55) 0%,rgba(18,16,20,0) 28%,rgba(18,16,20,0) 62%,rgba(18,16,20,.78) 100%);pointer-events:none}
.art-label,.art-foot{position:relative;z-index:3}
.art-label{font-size:12px;letter-spacing:.15em;padding:25px 28px 0}
.art-foot{padding:20px 28px;display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:14px}
.credit{font-size:12px;color:var(--muted);margin:10px 2px 0}
.credit a{text-underline-offset:3px}

/* Ward monitor drawing (shown behind the photo, and in its place when the photo cannot load) */
.trace{fill:none;stroke:var(--orange);stroke-width:3;stroke-linejoin:round;stroke-linecap:round}
.trace-glow{fill:none;stroke:var(--orange);stroke-width:10;opacity:.18;stroke-linejoin:round}
.grid-line{stroke:#ffffff;opacity:.06}
.readout{fill:#ffffff;font-family:var(--font-display)}
.readout-label{fill:#ffffff;opacity:.55;font-family:var(--font-body);font-size:13px;letter-spacing:.14em}
.pulse{fill:var(--orange);animation:pulse 1.6s ease-in-out infinite;transform-origin:center;transform-box:fill-box}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(1.8)}}

/* Values strip */
.values{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:24px 0;margin:60px 0;font-family:var(--font-display);font-size:clamp(1rem,1.8vw,1.6rem);font-weight:600;letter-spacing:-.02em}

/* Section heading */
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:28px}
.section-heading h2{margin-bottom:0}
.section-heading>*{min-width:0}
.section-note{color:var(--muted);max-width:30em;margin:0}

/* Discipline tiles */
.discipline-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.discipline{min-width:0}
.discipline-art{height:300px;overflow:hidden;border-radius:8px;display:flex;align-items:center;justify-content:center;padding:28px}
.discipline-art svg{width:100%;height:100%;max-width:100%;display:block}
.tile-dark{background:var(--tile-dark)}
.tile-green{background:var(--tile-green)}
.tile-lilac{background:var(--tile-lilac)}
.discipline h3{margin:22px 0 8px}
.discipline p{font-size:15px;color:var(--muted);margin:0}
.roles{list-style:none;padding:0;margin:14px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.roles li{font-size:13px;font-weight:500;border:1px solid var(--line);border-radius:999px;padding:4px 12px}
.svg-label{font-family:var(--font-body);font-size:13px;letter-spacing:.14em}
.svg-title{font-family:var(--font-display);font-size:30px;font-weight:600;letter-spacing:-.5px}
.svg-tick{font-family:var(--font-body);font-size:13px}

/* Scope: protocols, services, tools */
.scope{margin-top:90px}
.scope-group{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:40px;border-top:1px solid var(--line);padding:38px 0;scroll-margin-top:20px}
.scope-group:last-of-type{border-bottom:1px solid var(--line)}
.scope-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--orange)}
.scope-head h3{font-size:clamp(1.5rem,2.2vw,2rem);margin:12px 0 14px}
.scope-head p{color:var(--muted);margin:0;max-width:26em}
.scope-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.scope-list li{border:1px solid var(--line);border-radius:7px;padding:20px 22px;background:var(--paper);transition:border-color .2s,background .2s}
.scope-list li:hover{border-color:var(--orange);background:var(--surface)}
.scope-list h4{font-size:1.1rem;letter-spacing:-.02em;margin:0 0 8px}
.scope-list p{font-size:14px;color:var(--muted);margin:0}
.scope-list a{font-weight:500}

/* Banner */
.custom-banner{margin-top:80px;padding:50px;background:var(--orange);border-radius:10px;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;color:var(--on-orange)}
.custom-banner>*{min-width:0}
.custom-banner h2{margin-bottom:0}
.custom-banner p:not(.eyebrow){font-size:19px;max-width:420px}
.button.light{background:#ffffff;color:#24202a}
.button.light:hover{background:#24202a;color:#ffffff}

/* Why now statement */
.statement{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);gap:60px;align-items:end;margin:0 0 90px}
.statement h2{font-size:clamp(2.1rem,3.8vw,3.9rem);margin:0}
.statement h2 em{font-style:normal;color:var(--orange)}
.statement-side p{color:var(--muted);font-size:17px}
.statement-side .boundary{font-family:var(--font-display);font-weight:600;font-size:1.3rem;letter-spacing:-.02em;color:var(--ink);border-top:1px solid var(--line);padding-top:18px;margin-bottom:18px}
.statement-side .text-link{font-size:15px;text-decoration:underline;display:inline-flex;align-items:center;gap:6px}

/* Trust -> Intelligence -> Robotics -> Coordination */
.layers{margin-top:90px;background:var(--panel);color:#ffffff;border-radius:12px;padding:50px}
.layers-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:end;margin-bottom:40px}
.layers-head h2{margin:0}
.layers-head h2 span{color:var(--orange-on-dark)}
.layers-head p{color:rgba(255,255,255,.72);font-size:17px;margin:0;max-width:32em}
.layers .eyebrow{color:rgba(255,255,255,.72)}
.layer-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.layer{border-top:1px solid rgba(255,255,255,.2);padding-top:20px;min-width:0}
.layer-step{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--orange-on-dark)}
.layer h3{color:#ffffff;margin:14px 0 10px;font-size:1.3rem}
.layer p{color:rgba(255,255,255,.72);font-size:15px;margin:0 0 14px}
.layer ul{margin:0;padding-left:18px;color:#ffffff;font-size:14px}
.layer li{margin-bottom:6px}
.layer li::marker{color:var(--orange-on-dark)}

/* Opportunity & resources hub */
.hub{margin-top:90px}
.link-list li{padding:0}
.link-row{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;padding:20px 22px;height:100%;text-decoration:none}
.link-row strong{display:block;font-family:var(--font-display);font-size:1.1rem;letter-spacing:-.02em;font-weight:600;margin-bottom:6px;line-height:1.2}
.link-row small{display:block;font-size:14px;color:var(--muted);line-height:1.55}
.link-row .arrow-icon{margin-top:2px;color:var(--orange)}
.link-row:hover{color:var(--ink)}
.scope-list li.podcast{padding:20px 22px;background:var(--surface)}
.podcast-tag{font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--orange);margin:0 0 8px}
.podcast-title{font-family:var(--font-display);font-size:1.1rem;font-weight:600;letter-spacing:-.02em;margin:0 0 4px}
.podcast-note{font-size:14px;color:var(--muted);margin:0 0 14px}
.podcast audio{width:100%;height:40px;display:block}

/* Footer */
.footer{background:var(--footer-bg);color:#fff;padding:50px 5% 36px;display:flex;justify-content:space-between;align-items:flex-start;gap:40px;flex-wrap:wrap}
.footer a{display:block;color:var(--footer-fg);font-size:14px;text-decoration:none;margin-bottom:9px}
.footer a:hover{color:#fff}
.footer-left{max-width:30em}
.footer-left img{width:170px;height:auto;display:block}
.footer-left p{color:var(--footer-fg);opacity:.7;font-size:13px;margin:14px 0 0}
.footer-cols{display:flex;gap:56px;flex-wrap:wrap}
.footer-head{font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--footer-fg);opacity:.6;margin:0 0 14px}
.footer-line{flex-basis:100%;border-top:1px solid rgba(255,255,255,.12);padding-top:22px;margin:10px 0 0;font-family:var(--font-display);font-size:14px;color:var(--footer-fg);opacity:.75}

/* Content pages */
.page-grid{display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:64px;align-items:start}
.crumb{font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;margin:0 0 18px;color:var(--muted)}
.crumb a{text-decoration:none;color:var(--orange)}
.prose{max-width:780px;min-width:0;font-size:17px;line-height:1.7}
.prose h1{font-size:clamp(2.1rem,3.8vw,3.5rem);margin:0 0 30px}
.prose h1 em{font-style:normal;color:var(--orange)}
.prose h1+p{font-size:19px;color:var(--muted)}
.prose h2{font-size:clamp(1.6rem,2.4vw,2.2rem);margin:56px 0 18px;padding-top:30px;border-top:1px solid var(--line);scroll-margin-top:24px}
.prose h3{font-size:1.3rem;letter-spacing:-.03em;margin:36px 0 12px;scroll-margin-top:24px}
.prose h4{font-size:1.05rem;letter-spacing:-.02em;margin:28px 0 8px}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{padding-left:22px;margin:0 0 20px}
.prose li{margin:6px 0}
.prose li>ul,.prose li>ol{margin:6px 0 0}
.prose li::marker{color:var(--orange)}
.prose a{text-decoration-color:var(--orange);text-decoration-thickness:2px;text-underline-offset:4px}
.prose strong{font-weight:700}
.prose hr{border:0;border-top:1px solid var(--line);margin:44px 0}
.prose blockquote{margin:30px 0;padding:24px 28px;background:var(--surface);border-radius:8px;font-family:var(--font-display);font-size:1.2rem;letter-spacing:-.02em}
.prose blockquote p{margin:0}
.prose code{font-family:var(--font-mono);font-size:.9em;background:var(--surface);padding:2px 6px;border-radius:4px}
.prose table{display:block;width:max-content;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:24px 0 28px;font-size:15px;font-variant-numeric:tabular-nums}
.prose th,.prose td{padding:11px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.prose th{font-family:var(--font-display);font-weight:600;background:var(--surface);letter-spacing:-.01em}
.prose audio{width:100%}
.toc{position:sticky;top:28px;border-left:1px solid var(--line);padding-left:20px;font-size:14px}
.toc-label{font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 12px}
.toc ol{list-style:none;padding:0;margin:0}
.toc li{margin:0 0 10px;line-height:1.4}
.toc a{text-decoration:none;color:var(--muted)}
.toc a:hover{color:var(--ink)}
.page-back{margin:60px 0 0;padding-top:24px;border-top:1px solid var(--line);font-size:15px}
.page-back a{text-decoration:underline}

@media(max-width:1100px){
	.layer-list{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:36px}
	.page-grid{grid-template-columns:minmax(0,1fr)}
	.toc{display:none}
}
@media(max-width:960px){
	.scope-group{grid-template-columns:1fr;gap:22px}
}
@media(max-width:760px){
	.header{padding:22px 6%;align-items:flex-start;flex-direction:column;gap:16px}
	.logo img{width:176px}
	.nav{gap:6px 22px}
	.nav a{min-height:44px}
	.main-content{padding:32px 6% 45px}
	.hero{grid-template-columns:1fr;gap:32px}
	.hero-art{min-height:340px}
	.button{padding:15px 20px;gap:16px}
	.values{display:grid;grid-template-columns:1fr 1fr;margin:40px 0;padding:20px 0;gap:10px}
	.section-heading{display:block}
	.section-heading .section-note{margin-top:14px}
	.discipline-grid{grid-template-columns:1fr;gap:34px}
	.discipline-art{height:260px}
	.scope{margin-top:60px}
	.scope-list{grid-template-columns:1fr}
	.custom-banner{grid-template-columns:1fr;padding:30px;gap:15px;margin-top:50px}
	.footer{padding:40px 6% 30px}
	.footer-cols{gap:32px}
	.statement{grid-template-columns:1fr;gap:24px;margin-bottom:60px}
	.layers{padding:30px 22px;margin-top:60px}
	.layers-head{grid-template-columns:1fr;gap:16px}
	.layer-list{grid-template-columns:1fr}
	.hub{margin-top:60px}
	.prose{font-size:16px}
	.prose h1+p{font-size:17px}
}
@media(prefers-reduced-motion:reduce){
	html{scroll-behavior:auto}
	*{transition:none!important;animation:none!important}
}

[hidden]{display:none!important}

/* ═══ selfdriven.institute additions ═══════════════════════════════ */

/* Legacy token names, so content written for the old selfdriven.css
   (share card, inline styles in markdown pages) picks up this palette */
:root{
	--bg:var(--paper);--text:var(--ink);--border:var(--line);--accent:var(--orange);
	--surface2:#eeecef;--muted2:#8d8690;
	--accent-dim:rgba(222,90,49,.10);--accent-strong:rgba(222,90,49,.18);
	--card-radius:10px;--shadow:0 2px 16px rgba(36,32,42,.07);
	--font:var(--font-body);--mono:var(--font-mono);
}
@media (prefers-color-scheme:dark){
	:root:not([data-theme="light"]){
		--surface2:#24212a;--muted2:#7f7884;
		--accent-dim:rgba(232,103,63,.14);--accent-strong:rgba(232,103,63,.22);
		--shadow:0 2px 16px rgba(0,0,0,.4);
	}
}
:root[data-theme="dark"]{
	--surface2:#24212a;--muted2:#7f7884;
	--accent-dim:rgba(232,103,63,.14);--accent-strong:rgba(232,103,63,.22);
	--shadow:0 2px 16px rgba(0,0,0,.4);
}

h1 em,h2 em{font-style:normal;color:var(--orange)}
.hero-copy .intro{max-width:36em}

/* Stats strip (sits where healthcare has its values strip) */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:30px 0;margin:60px 0}
.stat{min-width:0}
.stat-num{font-family:var(--font-display);font-size:clamp(1.7rem,2.6vw,2.5rem);font-weight:600;letter-spacing:-.045em;line-height:1;color:var(--orange)}
.stat-label{font-size:14px;line-height:1.5;color:var(--muted);margin:12px 0 0}

/* Statement followed directly by its tiles */
.statement.tight{margin-bottom:56px}

/* Hero panel: witnessed key-event log */
.kel-link{stroke:#ffffff;stroke-width:2;opacity:.35}
.kel-node{fill:var(--panel);stroke:#ffffff;stroke-width:2;opacity:.9}
.kel-node.anchored{fill:#ffffff;stroke:none}
.kel-node.latest{fill:var(--orange);stroke:none}
.kel-tag{fill:#ffffff;opacity:.7;font-family:var(--font-mono);font-size:12px}
.witness{fill:none;stroke:#ffffff;stroke-width:1.5;opacity:.55}
.witness.signed{stroke:var(--orange);opacity:1}
.receipt{stroke:var(--orange);stroke-width:1.5;stroke-dasharray:3 5;opacity:.75;fill:none}

/* Numbered items inside scope lists (trust stack, areas of focus) */
.scope-num{display:block;font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--orange);margin:0 0 8px}
.scope-list code{font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.04em;color:var(--orange);border:1px solid var(--line);border-radius:4px;padding:1px 6px;margin-left:8px;vertical-align:3px}
.scope-list.single{grid-template-columns:1fr}
.scope-list{align-content:start}

/* Orange banner action */
.custom-banner .button{margin-top:4px}
.custom-banner .banner-copy p{margin-bottom:22px}
.custom-banner .banner-copy p:last-child{margin-bottom:0}

/* Content-page prev / next */
.prose .crumb+h2{margin-top:0;padding-top:0;border-top:0}
.page-nav{display:flex;justify-content:space-between;gap:16px;margin:60px 0 0;padding-top:24px;border-top:1px solid var(--line);font-size:15px}
.page-nav a{text-decoration:underline;text-decoration-color:var(--orange);text-underline-offset:4px}

/* Share card (resources and paper pages) */
.sd-share-card{position:relative;overflow:hidden;max-width:580px;width:100%;margin:40px 0 0;padding:28px 30px;background:var(--surface);border:1px solid var(--line);border-radius:10px;font-family:var(--font-body)}
.sd-share-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--orange)}
.sd-share-card .sd-share-eyebrow{font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--orange);margin:0 0 8px}
.sd-share-card .sd-share-title{font-family:var(--font-display);font-size:1.25rem;font-weight:600;letter-spacing:-.03em;line-height:1.25;color:var(--ink);margin:0 0 6px}
.sd-share-card .sd-share-subtitle{font-size:14px;color:var(--muted);margin:0 0 20px;line-height:1.6}
.sd-share-card .sd-share-url-row{display:flex;align-items:center;gap:10px;background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:8px 8px 8px 16px;margin:16px 0 18px}
.sd-share-card .sd-share-url-text{flex:1;min-width:0;font-family:var(--font-mono);font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sd-share-card .sd-copy-btn{flex-shrink:0;background:var(--button-bg);color:var(--button-fg);border:0;border-radius:6px;padding:9px 16px;font:600 13px/1 var(--font-body);cursor:pointer;transition:background .2s,color .2s}
.sd-share-card .sd-copy-btn:hover{background:var(--orange);color:#fff}
.sd-share-card .sd-copy-btn.copied{background:var(--tile-green);color:#fff}
.sd-share-card .sd-share-label{font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 10px}
.sd-share-card .sd-social-row{display:flex;flex-wrap:wrap;gap:8px}
.prose .sd-share-card a.sd-social-btn,.sd-social-btn{display:inline-flex;align-items:center;gap:7px;min-height:40px;border:1px solid var(--line);border-radius:6px;padding:8px 14px;font:500 13px/1 var(--font-body);color:var(--ink);background:var(--paper);text-decoration:none;transition:border-color .2s,color .2s}
.prose .sd-share-card a.sd-social-btn:hover,.sd-social-btn:hover{border-color:var(--orange);color:var(--orange-hover)}
.sd-social-btn svg{width:16px;height:16px;flex-shrink:0;fill:currentColor}
.sd-toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(80px);opacity:0;z-index:9999;pointer-events:none;background:var(--button-bg);color:var(--button-fg);font:500 13px/1 var(--font-body);border-radius:6px;padding:12px 20px;box-shadow:0 4px 24px rgba(0,0,0,.18);transition:transform .3s,opacity .3s}
.sd-toast.show{transform:translateX(-50%) translateY(0);opacity:1}

@media(max-width:900px){
	.stats{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:26px}
}
@media(max-width:760px){
	.stats{margin:40px 0;padding:24px 0;gap:22px}
	.statement.tight{margin-bottom:40px}
	.sd-share-card{padding:24px 20px}
}
.scope-head p+p{margin-top:14px}

/* ═══ solve.nexus additions ═══════════════════════════════════════ */

/* Wordmark (header and footer) */
.wordmark{display:inline-flex;align-items:center;gap:12px;text-decoration:none;font-family:var(--font-display);font-size:1.5rem;font-weight:600;letter-spacing:-.045em;line-height:1;color:var(--ink)}
.wordmark:hover{color:var(--ink)}
.wordmark b{font-weight:600;color:var(--orange)}
.logo.wordmark img,.footer-left .wordmark img{width:34px;height:34px;border-radius:50%;flex:0 0 auto}
.footer .wordmark{display:inline-flex;color:#ffffff;font-size:1.3rem;margin:0}
.footer .wordmark:hover{color:#ffffff}
.footer .wordmark b{color:var(--orange-on-dark)}
.footer-left .wordmark img{width:30px;height:30px}

/* Hero panel: the solving loop */
.trinity-tag{fill:#ffffff;opacity:.75;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em}
.loop-arc{fill:none;stroke:#ffffff;stroke-width:1.5;stroke-dasharray:4 6;opacity:.45}
.loop-head{fill:none;stroke:#ffffff;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;opacity:.6}

/* Five-step loop in the dark panel */
.layer-list.five{grid-template-columns:repeat(5,minmax(0,1fr));gap:24px}
.loop-note{margin:34px 0 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.2);font-family:var(--font-display);font-size:1.1rem;font-weight:500;letter-spacing:-.02em;color:#ffffff}
.loop-note span{color:var(--orange-on-dark);margin-right:6px}

/* Scales: individual to civilisation */
.scales{list-style:none;padding:0;margin:0 0 40px;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:24px}
.scale{min-width:0;border-top:1px solid var(--line);padding-top:22px}
.scale-mark{display:block;width:56px;height:56px;margin:0 0 18px;overflow:visible}
.scale-mark rect{fill:none;stroke:var(--muted);stroke-width:1.5;opacity:.45}
.scale-mark rect.on{stroke:var(--orange);stroke-width:2.5;opacity:1}
.scale .layer-step{color:var(--orange)}
.scale h3{margin:10px 0 8px;font-size:1.3rem}
.scale p{font-size:15px;color:var(--muted);margin:0}

@media(max-width:1100px){
	.layer-list.five{grid-template-columns:repeat(3,minmax(0,1fr))}
	.scales{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:34px}
}
@media(max-width:760px){
	.wordmark{font-size:1.3rem}
	.layer-list.five{grid-template-columns:1fr}
	.scales{grid-template-columns:1fr;row-gap:26px}
	.scale{display:grid;grid-template-columns:56px minmax(0,1fr);column-gap:18px;align-items:start}
	.scale-mark{grid-row:span 3;margin:0}
	.scale .layer-step,.scale h3,.scale p{grid-column:2}
	.scale h3{margin:6px 0 6px}
}