/* ============================================================
   koscak.ai shared deck design system
   ONE stylesheet for every research-deck page (space-deck,
   struktura-deck, desi-deck, and future decks). Fixes the root
   cause of per-page CSS drift: every deck used to hand-copy this
   ~130-line block and slowly diverge. Now there is one file.
   Reference from any deck via:
     <link rel="stylesheet" href="https://koscak.ai/deck.css">
   Pattern matches nav.js: absolute URL, cross-origin safe.
   ============================================================ */
:root{
  --bg:#000000;--bg-1:#0a0a0a;--bg-2:#111213;--bg-3:#1c1c1e;--bg-4:#2c2c2e;
  --g:#76b900;--g-dim:rgba(118,185,0,.12);--g-line:rgba(118,185,0,.25);
  --b:#4488ff;--p:#b080ff;--r:#ff5555;--amber:#fbbf24;
  --t1:#f5f5f7;--t2:rgba(245,245,247,.84);--t3:rgba(245,245,247,.68);--t4:rgba(245,245,247,.42);
  --sep-soft:rgba(255,255,255,.08);--line:rgba(255,255,255,.07);
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'SF Pro Display',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --s1:8px;--s2:16px;--s3:24px;--s4:32px;--s5:40px;--s6:48px;--s8:64px;--s10:80px;
  --sec-y:clamp(70px,10vw,120px);--sec-x:clamp(22px,4vw,60px);--max:1068px;
  --r-card:20px;--r-card-sm:16px;--r-pill:980px;
  --e1:cubic-bezier(.4,0,.6,1);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{background:var(--bg);color:var(--t2);font-family:var(--sans);line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--g);text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--sec-x)}
.mono{font-family:var(--mono)}
.gn{color:var(--g);font-family:var(--mono);font-weight:700}

/* ============ subnav: floating glass pill, matches nav.js's own .nav-links material exactly ============ */
.subnav{position:sticky;top:64px;z-index:199;display:flex;justify-content:center;padding:10px 16px;pointer-events:none}
.subnav-in{pointer-events:auto;display:inline-flex;align-items:center;gap:2px;padding:5px;border-radius:999px;background:rgba(255,255,255,.045);border:.5px solid rgba(255,255,255,.09);backdrop-filter:blur(18px) saturate(180%);-webkit-backdrop-filter:blur(18px) saturate(180%);box-shadow:inset 0 .5px 0 rgba(255,255,255,.18),inset 0 -.5px 0 rgba(0,0,0,.22),0 6px 22px rgba(0,0,0,.28);max-width:100%;overflow-x:auto;scrollbar-width:none}
.subnav-in::-webkit-scrollbar{display:none}
.subnav a{flex-shrink:0;padding:9px 14px;border-radius:999px;font-size:.78rem;font-weight:500;color:rgba(245,245,247,.7);white-space:nowrap;text-decoration:none;transition:color .2s,background .2s,box-shadow .2s}
.subnav a:hover{color:#fff;background:rgba(255,255,255,.07)}
.subnav a.on{color:#0a140a;background:linear-gradient(180deg,#8ed11a,#76b900 60%,#5e9500);font-weight:700;box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 3px 10px rgba(118,185,0,.3)}
@media(max-width:479px){.subnav{padding:8px 12px}.subnav-in{padding:4px}.subnav a{padding:8px 12px;font-size:.74rem}}

/* ============ hero + stat row ============ */
.hero{min-height:86vh;display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden;padding:calc(112px + var(--s8)) 0 var(--s8)}
.hero-mesh{position:absolute;inset:0;pointer-events:none;background:radial-gradient(900px 620px at 18% 8%,rgba(118,185,0,.14),transparent 62%),radial-gradient(1100px 760px at 88% 82%,rgba(118,185,0,.07),transparent 60%)}
.hero-in{position:relative;z-index:1}
.kicker{font-family:var(--mono);font-size:.65rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--g);margin-bottom:var(--s3)}
.hero h1{font-size:clamp(2.6rem,7vw,5.2rem);font-weight:900;letter-spacing:-.045em;line-height:1.02;color:#fff;margin-bottom:var(--s3);max-width:20ch}
.hero h1 em{font-style:normal;color:var(--g)}
.hero-sub{font-size:clamp(1rem,1.5vw,1.15rem);font-weight:300;color:var(--t2);max-width:62ch;line-height:1.6;margin-bottom:var(--s5)}
.hero-sub b{color:var(--t1);font-weight:600}
.stat-row{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--s2)}
@media(min-width:1024px){.stat-row{grid-template-columns:repeat(4,1fr)}}
@media(max-width:479px){.stat-row{grid-template-columns:1fr}}
/* Liquid-glass card, adapted from a proven production component (chromatic prism-rim border
   via masked gradient + mouse-tracked specular highlight) — recolored to koscak's own
   single-accent green rule instead of the source's multi-hue rim. */
.glass{position:relative;isolation:isolate;background:rgba(255,255,255,.045);border-radius:var(--r-card);
  backdrop-filter:blur(28px) saturate(190%) brightness(1.04);-webkit-backdrop-filter:blur(28px) saturate(190%) brightness(1.04);
  box-shadow:inset 0 1.75px 0 rgba(255,255,255,.28),inset 0 .5px 0 rgba(255,255,255,.5),
    inset 1px 0 0 rgba(255,255,255,.08),inset -1px 0 0 rgba(0,0,0,.2),
    inset 0 -1.25px 0 rgba(0,0,0,.35),inset 0 -.5px 0 rgba(0,0,0,.5),
    0 1px 1px rgba(0,0,0,.22),0 12px 32px -10px rgba(0,0,0,.5),0 24px 60px -20px rgba(0,0,0,.55),
    0 0 0 1px rgba(118,185,0,.06);
  transition:transform .4s var(--e1),border-color .3s var(--e1),box-shadow .4s var(--e1)}
.glass::before{content:'';position:absolute;inset:0;border-radius:inherit;padding:1.25px;
  background:linear-gradient(115deg,rgba(118,185,0,.5) 0%,rgba(204,255,68,.3) 22%,rgba(255,255,255,.4) 50%,rgba(118,185,0,.35) 75%,rgba(204,255,68,.5) 100%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;
  pointer-events:none;z-index:1;opacity:.85}
.glass::after{content:'';position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:1;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(255,255,255,.13) 0%,rgba(243,243,251,.04) 24%,transparent 50%);
  opacity:0;transition:opacity .35s var(--e1)}
.glass:hover::after{opacity:.7}
.glass:active{transform:scale(.997);transition-duration:.12s}
.glass>*{position:relative;z-index:2}
.stat{border-radius:var(--r-card);padding:var(--s3)}
.stat .lbl{font-family:var(--mono);font-size:.66rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--t2);margin-bottom:8px}
.stat .val{font-family:var(--mono);font-size:clamp(1.3rem,2.4vw,1.9rem);font-weight:700;color:var(--t1);line-height:1.1;letter-spacing:-.02em}
.stat .val.g{color:var(--g);text-shadow:0 0 24px rgba(118,185,0,.35)}
.stat .sub{font-size:.85rem;color:var(--t2);margin-top:6px;line-height:1.5}
.stat.hl{background:linear-gradient(135deg,rgba(118,185,0,.14) 0%,rgba(255,255,255,.045) 60%);box-shadow:inset 0 1px 0 rgba(255,255,255,.26),inset 0 -1px 0 rgba(0,0,0,.3),0 20px 60px rgba(0,0,0,.45),0 0 0 1px var(--g-line)}

/* ============ section / chapter pattern ============ */
section.ch{padding:var(--sec-y) 0;border-top:1px solid var(--line);scroll-margin-top:112px}
.ch-num{font-family:var(--mono);font-size:.65rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--g);margin-bottom:var(--s2)}
.ch h2{font-size:clamp(1.7rem,3.2vw,2.7rem);font-weight:800;letter-spacing:-.04em;line-height:1.14;color:#fff;margin-bottom:var(--s2);max-width:28ch}
.ch .dek{font-size:clamp(1rem,1.4vw,1.1rem);font-weight:300;color:var(--t2);max-width:64ch;margin-bottom:var(--s5)}
.ch p{max-width:70ch;margin-bottom:var(--s2);font-size:.9375rem}
.ch p b{color:var(--t1);font-weight:600}
.ch h3{font-size:1rem;font-weight:600;letter-spacing:-.01em;color:var(--t1);margin:var(--s4) 0 var(--s2)}

/* ============ generic connective-section pattern (used for any "overview" chapter) ============ */
.proofs{padding:var(--sec-y) 0;border-top:1px solid var(--line);scroll-margin-top:112px}
.proofs-head{margin-bottom:var(--s5);max-width:64ch}
.proofs-eyebrow{font-family:var(--mono);font-size:.65rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--g);margin-bottom:var(--s2)}
.proofs h2{font-size:clamp(1.7rem,3.2vw,2.7rem);font-weight:800;letter-spacing:-.04em;line-height:1.14;color:#fff;margin-bottom:var(--s2)}
.proofs .dek{font-size:clamp(1rem,1.4vw,1.1rem);font-weight:300;color:var(--t2)}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--s2)}
@media(max-width:1023px){.grid4{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.grid4{grid-template-columns:1fr}}
.proof-card{border-radius:var(--r-card);padding:var(--s3);display:flex;flex-direction:column;gap:10px;transition:transform .3s cubic-bezier(.34,1.56,.64,1)}
.proof-card:hover{transform:translateY(-3px)}
.proof-card .pc-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.proof-card .pc-name{font-weight:800;font-size:1.02rem;color:#fff;letter-spacing:-.01em}
.proof-card .pc-claim{font-size:.92rem;color:var(--t1);font-weight:600;line-height:1.4}
.proof-card .pc-proof{font-size:.82rem;color:var(--t3);line-height:1.55;flex:1}
.proof-card .pc-link{font-size:.78rem;font-weight:700;color:var(--g);display:flex;align-items:center;gap:5px}

/* ============ shared components: grid, card, table, badge, terminal, note, pill-link ============ */
.grid{display:grid;gap:var(--s2);margin:var(--s4) 0}
.grid.c2{grid-template-columns:1fr 1fr}
.grid.c3{grid-template-columns:repeat(3,1fr)}
@media(max-width:743px){.grid.c2,.grid.c3{grid-template-columns:1fr}}
.card{border-radius:var(--r-card);padding:var(--s3);transition:transform .3s cubic-bezier(.34,1.56,.64,1)}
.card:hover{transform:translateY(-2px)}
.card .lbl{font-family:var(--mono);font-size:.63rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--g);margin-bottom:10px}
.card .big{font-family:var(--mono);font-size:clamp(1.2rem,2vw,1.6rem);font-weight:700;color:var(--t1);letter-spacing:-.02em;line-height:1.15;margin-bottom:8px}
.card .big.g{color:var(--g)}
.card .txt{font-size:.84rem;color:var(--t3);line-height:1.55}
.card.hl{background:linear-gradient(135deg,rgba(118,185,0,.1) 0%,rgba(255,255,255,.045) 55%);box-shadow:inset 0 1px 0 rgba(255,255,255,.26),inset 0 -1px 0 rgba(0,0,0,.3),0 20px 60px rgba(0,0,0,.45),0 0 0 1px var(--g-line)}
.tbl-wrap{overflow-x:auto;margin:var(--s4) 0;border:1px solid var(--sep-soft);border-radius:var(--r-card);background:var(--bg-2)}
table.tbl{width:100%;border-collapse:collapse;font-size:.84rem}
.tbl th{font-family:var(--mono);font-size:.63rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--g);text-align:left;padding:13px 16px;border-bottom:1px solid var(--sep-soft);white-space:nowrap}
.tbl td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--t3);vertical-align:top;line-height:1.5}
.tbl tr:last-child td{border-bottom:none}
.tbl td b{color:var(--t1);font-weight:600}
.tbl tr:hover td{background:rgba(118,185,0,.03)}
@media(max-width:743px){table.tbl{min-width:600px}}
.badge{display:inline-block;font-family:var(--mono);font-size:.6rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;border-radius:var(--r-pill);white-space:nowrap}
.badge.live{background:var(--g-dim);color:var(--g);border:1px solid var(--g-line)}
.badge.part{background:rgba(251,191,36,.1);color:var(--amber);border:1px solid rgba(251,191,36,.25)}
.term{background:#050505;border:1px solid var(--sep-soft);border-radius:var(--r-card);margin:var(--s4) 0;overflow:hidden;box-shadow:0 30px 80px -20px rgba(118,185,0,.14),0 20px 60px rgba(0,0,0,.5)}
.term-bar{display:flex;align-items:center;gap:8px;padding:12px 18px;border-bottom:1px solid var(--line);background:var(--bg-1)}
.term-bar i{width:10px;height:10px;border-radius:50%;background:var(--bg-4)}
.term-bar i:first-child{background:rgba(255,85,85,.5)}
.term-bar span{font-family:var(--mono);font-size:.66rem;color:var(--t4);margin-left:8px;letter-spacing:.05em}
.term-body{padding:var(--s3);font-family:var(--mono);font-size:.78rem;line-height:1.85;color:var(--t2);overflow-x:auto;white-space:pre-wrap}
.term-body .grn{color:var(--g)}.term-body .wht{color:var(--t1)}
.note{background:var(--bg-2);border-left:2px solid var(--g);padding:var(--s3);margin:var(--s4) 0;border-radius:0 var(--r-card-sm) var(--r-card-sm) 0;font-size:.86rem;color:var(--t3);line-height:1.7}
.note b{color:var(--g);font-weight:700}
.note.warn{border-left-color:var(--amber)}
.note.warn b{color:var(--amber)}
.al-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:var(--s3)}
.al{display:inline-flex;align-items:center;gap:6px;background:var(--bg-3);color:var(--t2);font-size:.8rem;font-weight:600;padding:9px 16px;border-radius:var(--r-pill);transition:background .2s,color .2s}
.al:hover{background:var(--bg-4);color:#fff}

/* ============ pull-quote + versus-comparison (from desi-deck, generalized) ============ */
.pq{margin:var(--s6) 0;padding:var(--s4) var(--s5);border-left:2px solid var(--g);background:linear-gradient(135deg,var(--g-dim) 0%,transparent 65%);border-radius:0 var(--r-card) var(--r-card) 0}
.pq p{font-size:clamp(1.15rem,2vw,1.5rem);font-weight:300;line-height:1.5;color:var(--t1);max-width:none;margin-bottom:10px}
.pq cite{font-family:var(--mono);font-size:.72rem;color:var(--g);font-style:normal;letter-spacing:.06em}
.vs{display:grid;grid-template-columns:1fr 1fr;gap:var(--s2);margin:var(--s5) 0}
@media(max-width:640px){.vs{grid-template-columns:1fr}}
.vs-col{border-radius:var(--r-card);padding:var(--s4) var(--s3);border:1px solid var(--sep-soft);background:var(--bg-2)}
.vs-col.us{border-color:var(--g-line);background:linear-gradient(160deg,rgba(118,185,0,.08) 0%,var(--bg-2) 60%)}
.vs-col h4{font-family:var(--mono);font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;margin-bottom:var(--s3)}
.vs-col.them h4{color:var(--t3)}.vs-col.us h4{color:var(--g)}
.vs-col ul{list-style:none;display:flex;flex-direction:column;gap:14px}
.vs-col li{display:flex;gap:12px;align-items:flex-start;font-size:1rem;line-height:1.4}
.vs-col li .mk{flex:0 0 20px;font-weight:800;font-size:1.05rem;line-height:1.3}
.vs-col.them li{color:var(--t3)}.vs-col.them .mk{color:var(--r)}
.vs-col.us li{color:var(--t1)}.vs-col.us .mk{color:var(--g)}

/* ============ footer ============ */
footer{padding:var(--s8) 0 var(--s10);border-top:1px solid var(--line)}
footer .f-in{display:flex;flex-wrap:wrap;gap:var(--s3);align-items:center;justify-content:space-between}
footer p{font-size:.8rem;color:var(--t4)}

@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}