/* CognitiveCoefficient.com — design system
   Aesthetic: data-terminal precision (Bloomberg) x institutional restraint (OECD/World Bank).
   Self-contained: system fonts only, no external assets. */

:root{
  --bg:#0a0e14; --bg-1:#0e141d; --bg-2:#131c28; --bg-3:#17222f;
  --line:#1d2a3a; --line-2:#28384c; --line-3:#34495f;
  --ink:#e8eef7; --ink-2:#aebfd2; --ink-3:#8a9fb8; --ink-4:#5b6b81;
  --accent:#4cc9f0; --accent-2:#5b8cff; --violet:#a78bfa;
  --pos:#34d399; --warn:#fbbf24; --neg:#f87171; --amber:#f0a23d;
  --grad:linear-gradient(135deg,#4cc9f0,#5b8cff 55%,#a78bfa);
  --shadow:0 10px 40px -12px rgba(0,0,0,.65);
  --r:10px; --r-sm:7px; --r-lg:16px;
  --font:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  --mono:'SF Mono','JetBrains Mono',ui-monospace,Menlo,Consolas,monospace;
  --maxw:1240px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);color:var(--ink);font-family:var(--font);
  font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(900px 500px at 80% -10%,rgba(91,140,255,.08),transparent 60%),
                   radial-gradient(700px 500px at -10% 0%,rgba(167,139,250,.06),transparent 55%);
  background-attachment:fixed;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.btn:focus-visible,.chip:focus-visible,nav.main a:focus-visible{outline-offset:3px}
h1,h2,h3,h4{line-height:1.18;margin:0 0 .4em;font-weight:680;letter-spacing:-.01em}
h1{font-size:clamp(1.8rem,3.4vw,2.7rem)}
h2{font-size:1.5rem;margin-top:.2em}
h3{font-size:1.16rem}
p{margin:.4em 0 .9em;color:var(--ink-2)}
small{color:var(--ink-3)}
code{font-family:var(--mono);font-size:.86em;background:var(--bg-2);padding:.1em .4em;border-radius:5px;border:1px solid var(--line)}
.mono{font-family:var(--mono)}
hr{border:none;border-top:1px solid var(--line);margin:1.6rem 0}

/* ---- layout ---- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:34px 0}
.muted{color:var(--ink-3)}
.dim{color:var(--ink-2)}
.center{text-align:center}
.right{text-align:right}
.nowrap{white-space:nowrap}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}
.gside{grid-template-columns:1.6fr 1fr}
@media(max-width:900px){.g3,.g4,.g5,.gside{grid-template-columns:1fr}.g2{grid-template-columns:1fr}}
@media(max-width:560px){.hide-sm{display:none}}

/* ---- top bar ---- */
header.top{
  position:sticky;top:0;z-index:50;background:rgba(10,14,20,.82);
  backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid var(--line);
}
.topbar{display:flex;align-items:center;gap:20px;height:60px}
.brand{display:flex;align-items:center;gap:11px;font-weight:740;letter-spacing:-.02em;color:var(--ink);font-size:1.05rem}
.brand:hover{text-decoration:none}
.brand .mark{width:26px;height:26px;border-radius:7px;background:var(--grad);box-shadow:0 0 16px rgba(76,201,240,.5);position:relative;flex:none}
.brand .mark::after{content:"";position:absolute;inset:6px;border-radius:3px;background:var(--bg);opacity:.55}
.brand b{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
nav.main{display:flex;gap:3px;margin-left:auto;flex-wrap:wrap}
nav.main a{color:var(--ink-2);padding:7px 11px;border-radius:8px;font-size:.9rem;font-weight:540}
nav.main a:hover{background:var(--bg-2);color:var(--ink);text-decoration:none}
nav.main a.on{color:var(--ink);background:var(--bg-2);box-shadow:inset 0 0 0 1px var(--line-2)}
.menu-btn{display:none;margin-left:auto;background:var(--bg-2);border:1px solid var(--line-2);color:var(--ink);border-radius:8px;padding:7px 11px;font-size:1.1rem;cursor:pointer}
@media(max-width:1024px){nav.main{display:none;width:100%;order:3;margin:0}nav.main.open{display:flex}.menu-btn{display:block}.topbar{flex-wrap:wrap;height:auto;padding:10px 0}}

/* ---- hero ---- */
.hero{padding:46px 0 26px;position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:680;border:1px solid var(--line-2);background:var(--bg-2);padding:5px 11px;border-radius:100px}
.hero h1{margin:.5em 0 .35em;max-width:18ch}
.hero .lede{font-size:1.16rem;color:var(--ink-2);max-width:62ch}
.hero .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* ---- cards / panels ---- */
.card{background:linear-gradient(180deg,var(--bg-1),var(--bg));border:1px solid var(--line);border-radius:var(--r);padding:18px}
.card.pad-lg{padding:24px}
.card h3{margin-top:0}
.panel{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px}
.raise{box-shadow:var(--shadow)}
.kicker{font-size:.72rem;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-3);font-weight:680;margin-bottom:10px}

/* ---- stat tiles ---- */
.stat{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r);padding:16px 17px;position:relative;overflow:hidden}
.stat .label{font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);font-weight:640}
.stat .val{font-family:var(--mono);font-size:2rem;font-weight:680;letter-spacing:-.02em;margin:.18em 0 .04em;color:var(--ink)}
.stat .sub{font-size:.82rem;color:var(--ink-3)}
.stat .spark{position:absolute;right:0;bottom:0;opacity:.5}
.stat.accent{box-shadow:inset 3px 0 0 var(--accent)}

/* index pills */
.idxpill{display:inline-flex;flex-direction:column;gap:2px;padding:11px 14px;border-radius:var(--r-sm);background:var(--bg-2);border:1px solid var(--line);min-width:96px}
.idxpill .code{font-size:.68rem;letter-spacing:.1em;color:var(--ink-3);font-weight:700}
.idxpill .n{font-family:var(--mono);font-size:1.35rem;font-weight:680}

/* ---- badges ---- */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:.72rem;font-weight:640;padding:3px 9px;border-radius:100px;border:1px solid var(--line-2);background:var(--bg-2);color:var(--ink-2);letter-spacing:.02em}
.badge.pos{color:var(--pos);border-color:rgba(52,211,153,.3);background:rgba(52,211,153,.08)}
.badge.warn{color:var(--warn);border-color:rgba(251,191,36,.3);background:rgba(251,191,36,.08)}
.badge.neg{color:var(--neg);border-color:rgba(248,113,113,.3);background:rgba(248,113,113,.08)}
.badge.info{color:var(--accent);border-color:rgba(76,201,240,.3);background:rgba(76,201,240,.08)}
.badge.violet{color:var(--violet);border-color:rgba(167,139,250,.3);background:rgba(167,139,250,.08)}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block;background:var(--ink-3)}

/* ---- disclaimer ---- */
.disclaimer{border:1px dashed var(--line-3);background:rgba(240,162,61,.05);border-radius:var(--r);padding:11px 15px;color:var(--ink-2);font-size:.86rem;display:flex;gap:10px;align-items:flex-start}
.disclaimer b{color:var(--amber)}
.disclaimer .ic{color:var(--amber);flex:none}

/* ---- tables ---- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--bg-1)}
table.data{width:100%;border-collapse:collapse;font-size:.9rem;min-width:520px}
table.data th,table.data td{padding:10px 13px;text-align:left;border-bottom:1px solid var(--line)}
table.data th{font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);font-weight:680;background:var(--bg-2);position:sticky;top:0;cursor:pointer;user-select:none}
table.data th.num,table.data td.num{text-align:right;font-family:var(--mono)}
table.data tbody tr:hover{background:var(--bg-2)}
table.data tr:last-child td{border-bottom:none}
table.data .rk{color:var(--ink-3);font-family:var(--mono);width:34px}
.flag{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:8px;vertical-align:middle}
.bar-cell{position:relative;min-width:120px}
.bar-cell .barfill{position:absolute;left:0;top:50%;transform:translateY(-50%);height:18px;border-radius:4px;opacity:.22}
.bar-cell span{position:relative;font-family:var(--mono)}

/* ---- buttons / forms ---- */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--bg-2);border:1px solid var(--line-2);color:var(--ink);padding:9px 15px;border-radius:9px;font-size:.9rem;font-weight:600;cursor:pointer;transition:.15s}
.btn:hover{border-color:var(--line-3);background:var(--bg-3);text-decoration:none}
.btn.primary{background:var(--grad);border:none;color:#08111c;font-weight:700}
.btn.primary:hover{filter:brightness(1.08)}
.btn.sm{padding:6px 11px;font-size:.82rem}
label{display:block;font-size:.82rem;color:var(--ink-2);font-weight:560;margin:0 0 6px}
input,select{width:100%;background:var(--bg-2);border:1px solid var(--line-2);color:var(--ink);border-radius:8px;padding:9px 11px;font-size:.92rem;font-family:inherit}
input:focus,select:focus{outline:none;border-color:var(--accent)}
input[type=range]{padding:0;accent-color:var(--accent);height:6px}
.field{margin-bottom:14px}
.range-row{display:grid;grid-template-columns:1fr;gap:5px;margin-bottom:16px}
.range-row .rlabels{display:flex;justify-content:space-between;font-size:.72rem;color:var(--ink-3)}
.range-row .rname{font-size:.85rem;color:var(--ink-2);font-weight:560;display:flex;justify-content:space-between}
.range-row .rname b{font-family:var(--mono);color:var(--accent);font-weight:680}

/* ---- charts ---- */
.chart{width:100%;position:relative}
svg .axis text{fill:var(--ink-3);font-size:10px;font-family:var(--mono)}
svg .axis path,svg .axis line{stroke:var(--line-2)}
svg .grid line{stroke:var(--line);stroke-dasharray:2 3}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:.78rem;color:var(--ink-2);margin-top:8px}
.legend .sw{width:11px;height:11px;border-radius:3px;display:inline-block;margin-right:6px;vertical-align:middle}
.tip{position:fixed;pointer-events:none;background:var(--bg-3);border:1px solid var(--line-3);border-radius:8px;padding:9px 11px;font-size:.82rem;box-shadow:var(--shadow);z-index:99;max-width:260px;opacity:0;transition:opacity .1s}
.map-scale{display:flex;align-items:center;gap:9px;font-size:.74rem;color:var(--ink-3);font-family:var(--mono)}
.map-scale .ramp{height:9px;width:160px;border-radius:5px}

/* scenario chips */
.chips{display:flex;gap:7px;flex-wrap:wrap}
.chip{padding:6px 12px;border-radius:100px;border:1px solid var(--line-2);background:var(--bg-2);color:var(--ink-2);font-size:.82rem;font-weight:560;cursor:pointer}
.chip.on{background:rgba(76,201,240,.12);border-color:var(--accent);color:var(--ink)}
.chip:hover{color:var(--ink)}

/* feature list / steps */
.feat{display:flex;gap:13px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--line)}
.feat:last-child{border-bottom:none}
.feat .ic{width:34px;height:34px;border-radius:9px;background:var(--bg-2);border:1px solid var(--line-2);display:grid;place-items:center;flex:none;font-size:1.05rem}
.feat h4{margin:0 0 3px}
.feat p{margin:0;font-size:.9rem}

/* class ladder (cognitive classes) */
.ladder{display:flex;flex-direction:column;gap:2px}
.rung{display:flex;align-items:center;gap:14px;padding:13px 16px;border-radius:8px;background:linear-gradient(90deg,var(--bg-2),var(--bg-1));border:1px solid var(--line)}
.rung .pct{font-family:var(--mono);color:var(--accent);font-weight:680;min-width:64px}
.rung .nm{font-weight:620}
.rung .ds{color:var(--ink-3);font-size:.86rem}

/* prose (methodology / docs) */
.prose{max-width:80ch}
.prose h2{margin-top:1.6em;padding-top:.4em;border-top:1px solid var(--line)}
.prose h3{margin-top:1.3em;color:var(--ink)}
.prose ul,.prose ol{color:var(--ink-2);padding-left:1.3em}
.prose li{margin:.3em 0}
.prose table{width:100%;border-collapse:collapse;font-size:.88rem;margin:1em 0}
.prose th,.prose td{border:1px solid var(--line);padding:8px 11px;text-align:left}
.prose th{background:var(--bg-2);color:var(--ink-2)}
.prose code{white-space:pre-wrap}
.toc{position:sticky;top:78px}
.toc a{display:block;color:var(--ink-3);font-size:.85rem;padding:4px 0}
.toc a:hover{color:var(--ink)}

/* api code block */
pre.code{background:#070b11;border:1px solid var(--line);border-radius:var(--r);padding:15px 17px;overflow-x:auto;font-family:var(--mono);font-size:.82rem;color:#bcd0e6;line-height:1.5}
pre.code .k{color:var(--accent)}
pre.code .s{color:var(--pos)}
pre.code .c{color:var(--ink-4)}

/* footer */
footer.site{border-top:1px solid var(--line);margin-top:40px;padding:30px 0;color:var(--ink-3);font-size:.85rem}
footer.site .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px}
@media(max-width:760px){footer.site .cols{grid-template-columns:1fr 1fr}}
footer.site a{color:var(--ink-2);display:block;padding:3px 0}
footer.site h5{color:var(--ink-2);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;margin:0 0 8px}

/* misc */
.split{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.between{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.tag{font-family:var(--mono);font-size:.72rem;color:var(--ink-3);border:1px solid var(--line);border-radius:5px;padding:1px 6px}
.pillars{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}
.pillar{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:9px 12px;background:var(--bg-2);border-radius:8px;border:1px solid var(--line);font-size:.86rem}
.pillar .pv{font-family:var(--mono);font-weight:680}
.barline{height:6px;border-radius:4px;background:var(--bg-3);overflow:hidden;margin-top:4px}
.barline i{display:block;height:100%;background:var(--grad)}
.cta-band{background:linear-gradient(120deg,rgba(91,140,255,.1),rgba(167,139,250,.08));border:1px solid var(--line-2);border-radius:var(--r-lg);padding:26px}
.scn-note{font-size:.84rem;color:var(--ink-3);font-style:italic}
ul.clean{list-style:none;padding:0;margin:0}
ul.clean li{padding:7px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:10px}
ul.clean li:last-child{border:none}

/* ===== site theming (cognitivearistocracy.com variant) ===== */
body[data-site="aristocracy"]{
  --accent:#b79bff; --accent-2:#f0a23d; --violet:#f0a23d;
  --grad:linear-gradient(135deg,#b79bff,#8b6cf0 45%,#f0a23d);
  background-image:radial-gradient(900px 520px at 82% -10%,rgba(167,139,250,.10),transparent 60%),
                   radial-gradient(720px 520px at -8% 0%,rgba(240,162,61,.06),transparent 55%);
}

/* ===== Ask-AI sidebar ===== */
.ask-fab{position:fixed;right:20px;bottom:20px;z-index:60;display:inline-flex;align-items:center;gap:8px;
  background:var(--grad);color:#08111c;border:none;border-radius:100px;padding:12px 18px;font-weight:740;font-size:.92rem;
  cursor:pointer;box-shadow:0 10px 30px -8px rgba(76,201,240,.5),0 0 0 1px rgba(255,255,255,.06);transition:.16s}
.ask-fab:hover{filter:brightness(1.07);transform:translateY(-1px)}
.ask-fab .ask-spark{font-size:1rem}
.ask-backdrop{position:fixed;inset:0;background:rgba(4,7,11,.5);backdrop-filter:blur(2px);z-index:70;opacity:0;pointer-events:none;transition:.2s}
.ask-backdrop.open{opacity:1;pointer-events:auto}
.ask-panel{position:fixed;top:0;right:0;height:100dvh;width:420px;max-width:94vw;z-index:80;
  background:linear-gradient(180deg,var(--bg-1),var(--bg));border-left:1px solid var(--line-2);
  box-shadow:var(--shadow);transform:translateX(100%);transition:transform .24s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column}
.ask-panel.open{transform:translateX(0)}
.ask-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;padding:16px 18px;border-bottom:1px solid var(--line)}
.ask-title{font-weight:720;font-size:1.05rem;display:flex;align-items:center;gap:8px}
.ask-title::before{content:"✦";color:var(--accent)}
.ask-sub{font-size:.8rem;color:var(--ink-3);margin-top:2px}
.ask-x{background:var(--bg-2);border:1px solid var(--line-2);color:var(--ink-2);border-radius:8px;width:30px;height:30px;cursor:pointer;flex:none}
.ask-x:hover{color:var(--ink)}
.ask-msgs{flex:1;overflow-y:auto;padding:16px 18px;display:flex;flex-direction:column;gap:12px}
.ask-empty{color:var(--ink-3);font-size:.9rem;text-align:center;margin:auto 0;padding:0 10px}
.ask-empty .ic{font-size:1.8rem;display:block;margin-bottom:8px;opacity:.7}
.ask-msg{max-width:92%;font-size:.9rem;line-height:1.55;border-radius:12px;padding:10px 13px}
.ask-msg.user{align-self:flex-end;background:var(--bg-3);border:1px solid var(--line-2);color:var(--ink)}
.ask-msg.ai{align-self:flex-start;background:rgba(76,201,240,.06);border:1px solid rgba(76,201,240,.18);color:var(--ink-2)}
.ask-msg.ai strong{color:var(--ink)}
.ask-msg.ai ul{margin:.4em 0;padding-left:1.2em}
.ask-msg.ai p{margin:.4em 0;color:inherit}
.ask-msg.err{align-self:flex-start;background:rgba(248,113,113,.08);border:1px solid rgba(248,113,113,.25);color:var(--neg)}
.ask-typing{align-self:flex-start;color:var(--ink-3);font-size:.85rem;display:flex;gap:5px;align-items:center;padding:6px 2px}
.ask-typing i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;animation:askb 1s infinite}
.ask-typing i:nth-child(2){animation-delay:.15s}.ask-typing i:nth-child(3){animation-delay:.3s}
@keyframes askb{0%,80%,100%{opacity:.3;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}
.ask-suggest{display:flex;flex-wrap:wrap;gap:6px;padding:0 16px 8px}
.ask-suggest button{background:var(--bg-2);border:1px solid var(--line-2);color:var(--ink-2);border-radius:100px;padding:6px 11px;font-size:.78rem;cursor:pointer;text-align:left}
.ask-suggest button:hover{color:var(--ink);border-color:var(--line-3)}
.ask-form{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--line)}
.ask-form input{flex:1}
.ask-foot{font-size:.72rem;color:var(--ink-4);padding:0 16px 12px}
@media(max-width:560px){.ask-fab{right:14px;bottom:14px;padding:11px 15px}.ask-panel{width:100vw}}

/* ===== compare ===== */
.cmp-grid{display:grid;gap:14px}
.cmp-pick{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.cmp-chip{display:inline-flex;align-items:center;gap:7px;background:var(--bg-2);border:1px solid var(--line-2);border-radius:100px;padding:5px 7px 5px 12px;font-size:.86rem}
.cmp-chip b{font-family:var(--mono)}
.cmp-chip .rm{background:var(--bg-3);border:none;color:var(--ink-3);border-radius:50%;width:20px;height:20px;cursor:pointer;font-size:.8rem}
.cmp-chip .rm:hover{color:var(--neg)}
.cmp-tbl td.metric{color:var(--ink-2);font-weight:560}
.cmp-swatch{width:10px;height:10px;border-radius:3px;display:inline-block;margin-right:7px;vertical-align:middle}
.lens-card{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:680px){.lens-card{grid-template-columns:1fr}}
.lens{padding:16px;border-radius:var(--r);border:1px solid var(--line);background:var(--bg-1)}
.lens h4{margin:0 0 4px}.lens .big{font-family:var(--mono);font-size:1.6rem;font-weight:680}