/* TGPU Design System, Phase 1 foundations (staging).
   Layered on top of the original stylesheets; scoped to html.tgpu-ds so it can
   be switched off with ?ds=0 for side-by-side comparison. No content changes. */
:root{
  --brand-deep:#0c2f22;--brand-green:#143d2d;--brand-green-2:#1f5a41;
  --brand-gold:#b79150;--gold-soft:#e9dcc0;--gold-ink:#7a5c26;
  --cream:#f4efe3;--paper:#faf7ef;--ink:#262b25;--ink-muted:#555d53;--line:#ded1b9;
  --font-display:"Fraunces",Georgia,serif;--font-body:"Source Sans 3",system-ui,sans-serif;
  --font-arabic:"Noto Naskh Arabic",serif;
  --r-sm:8px;--r-md:14px;--r-lg:22px;
  --sh-1:0 1px 2px rgba(12,47,34,.06),0 4px 14px rgba(12,47,34,.06);
  --sh-2:0 2px 4px rgba(12,47,34,.06),0 14px 34px rgba(12,47,34,.12);
  --ease:cubic-bezier(.2,.7,.2,1);
}
html.tgpu-ds{-webkit-text-size-adjust:100%;scroll-padding-top:88px}
html.tgpu-ds body{font-family:var(--font-body);color:var(--ink);background:var(--paper);line-height:1.65;text-rendering:optimizeLegibility;overflow-x:hidden}
html.tgpu-ds[lang="ar"] body,html.tgpu-ds [lang="ar"]{font-family:var(--font-arabic),var(--font-body)}
html.tgpu-ds :is(h1,h2,h3){font-family:var(--font-display);letter-spacing:-.01em;line-height:1.18;text-wrap:balance}
html.tgpu-ds[lang="ar"] :is(h1,h2,h3){font-family:var(--font-arabic);letter-spacing:0;line-height:1.5}
html.tgpu-ds h1{font-size:clamp(2rem,1.3rem + 3vw,3.4rem);font-weight:600}
html.tgpu-ds h2{font-size:clamp(1.5rem,1.15rem + 1.5vw,2.25rem);font-weight:600}
html.tgpu-ds h3{font-size:clamp(1.12rem,1.02rem + .4vw,1.35rem);font-weight:600}
html.tgpu-ds p{text-wrap:pretty}
html.tgpu-ds .eyebrow,html.tgpu-ds .kicker{color:var(--gold-ink);font-family:var(--font-body);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.76rem}
html.tgpu-ds[lang="ar"] .eyebrow{letter-spacing:0;text-transform:none;font-size:.9rem}
html.tgpu-ds a{text-underline-offset:.18em}

/* Header: keep each section's original colours; add stickiness and focusable hover only */
html.tgpu-ds .site-header{position:sticky;top:0;z-index:50}
html.tgpu-ds .site-header nav a{border-radius:999px;transition:background .18s var(--ease),color .18s var(--ease)}
html.tgpu-ds .site-header nav a:hover{background:color-mix(in oklab,var(--brand-gold) 22%,transparent)}

/* Cards */
html.tgpu-ds :is(.card,.source-card,.panel,.product){background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
html.tgpu-ds :is(.card,.source-card,.product):hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:color-mix(in oklab,var(--brand-gold) 55%,var(--line))}
html.tgpu-ds .card a{color:var(--brand-green-2)}
html.tgpu-ds .tag,html.tgpu-ds .card-badge{background:var(--cream);color:var(--brand-green);border:1px solid var(--line);border-radius:999px;font-weight:700;letter-spacing:.02em}
html.tgpu-ds .grid{gap:clamp(.9rem,.6rem + 1vw,1.4rem)}

/* Buttons */
html.tgpu-ds :is(.button,.btn){min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;border-radius:999px;font-weight:700;transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s}
html.tgpu-ds :is(.button,.btn):hover{transform:translateY(-1px);box-shadow:var(--sh-1);filter:brightness(1.04)}

/* Notice */
html.tgpu-ds .notice{border-inline-start:4px solid var(--brand-gold);background:linear-gradient(180deg,#fffaf0,#fff6e4);border-radius:var(--r-md)}
html.tgpu-ds .gold-rule{background:var(--brand-gold)}

/* Footer */
html.tgpu-ds .site-footer{border-top:3px solid var(--brand-gold)}

/* Forms */
html.tgpu-ds :is(input,select,textarea){font:inherit;border-radius:var(--r-sm)}

/* Accessibility */
html.tgpu-ds :focus-visible{outline:3px solid var(--brand-gold);outline-offset:3px;border-radius:6px}
.tgpu-skip{position:absolute;inset-inline-start:1rem;top:-100px;z-index:1000;background:var(--brand-deep);color:#fff;padding:.7rem 1rem;border-radius:10px;font:600 1rem var(--font-body);text-decoration:none}
.tgpu-skip:focus{top:1rem}
html.tgpu-ds img{max-width:100%;height:auto}

/* Motion */
html.tgpu-ds .tgpu-reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
html.tgpu-ds .tgpu-reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html.tgpu-ds *,html.tgpu-ds *::before,html.tgpu-ds *::after{transition:none!important;animation:none!important}
  html.tgpu-ds .tgpu-reveal{opacity:1;transform:none}
}

/* Mobile */
@media (max-width:640px){
  html.tgpu-ds .wrap,html.tgpu-ds .container{padding-inline:1rem}
  html.tgpu-ds .site-header nav{overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  html.tgpu-ds .site-header nav::-webkit-scrollbar{display:none}
  html.tgpu-ds .site-header nav a{white-space:nowrap}
}

/* ================= Ecosystem shell ================= */
.tgpu-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
html.tgpu-shell body>header:not(.tgpu-header),html.tgpu-shell .site-header,html.tgpu-shell .classes-header{display:none!important}
html.tgpu-shell .tgpu-skip~.tgpu-skip{display:none}
.tgpu-wrap{width:min(1200px,100% - 2.5rem);margin-inline:auto}
.tgpu-header{position:sticky;top:0;z-index:900;background:var(--brand-deep);color:var(--cream);border-bottom:1px solid rgba(183,145,80,.28);transition:box-shadow .25s var(--ease),background .25s var(--ease);font-family:var(--font-body)}
.tgpu-header.is-scrolled{box-shadow:0 10px 30px -12px rgba(0,0,0,.45);background:color-mix(in oklab,var(--brand-deep) 94%,transparent);backdrop-filter:blur(10px)}
.tgpu-bar{width:min(1240px,100% - 2rem);margin-inline:auto;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:1rem;min-height:68px}
.tgpu-logo{display:flex;align-items:center;gap:.6rem;color:var(--cream);text-decoration:none;min-width:0}
.tgpu-logo img{width:44px;height:44px;border-radius:10px;background:#fff;object-fit:contain;padding:3px;flex:0 0 auto}
.tgpu-logo span{display:flex;flex-direction:column;line-height:1.05}
.tgpu-logo b{font-family:var(--font-display);font-size:1.25rem;letter-spacing:.02em;color:#fff}
.tgpu-logo small{font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--brand-gold)}
.tgpu-nav{display:flex;justify-content:center;align-items:center;gap:.15rem}
.tgpu-nav-link{appearance:none;background:none;border:0;font:600 .95rem/1 var(--font-body);color:rgba(244,239,227,.86);text-decoration:none;padding:.7rem .85rem;border-radius:999px;display:inline-flex;align-items:center;gap:.35rem;cursor:pointer;min-height:44px;transition:background .18s var(--ease),color .18s}
.tgpu-nav-link:hover,.tgpu-nav-link[aria-expanded="true"]{background:rgba(183,145,80,.16);color:#fff}
.tgpu-nav-link[aria-current="page"]{color:var(--brand-gold)}
.tgpu-nav-link.is-hub{color:#fff;box-shadow:inset 0 0 0 1px rgba(183,145,80,.55)}
.tgpu-dd{position:relative}
.tgpu-dd-panel{position:absolute;top:calc(100% + 8px);inset-inline-start:0;min-width:240px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-2);padding:.4rem;display:grid;opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s}
.tgpu-dd>button[aria-expanded="true"]+.tgpu-dd-panel{opacity:1;visibility:visible;transform:none}
.tgpu-dd-panel .tgpu-nav-link{color:var(--brand-green);border-radius:10px;justify-content:flex-start;width:100%}
.tgpu-dd-panel .tgpu-nav-link:hover{background:var(--cream);color:var(--brand-deep)}
.tgpu-actions{display:flex;align-items:center;gap:.5rem}
.tgpu-icon-btn{appearance:none;display:inline-flex;align-items:center;justify-content:center;gap:.4rem;min-width:44px;min-height:44px;border-radius:999px;border:1px solid rgba(183,145,80,.45);background:transparent;color:var(--cream);cursor:pointer;padding:0 .7rem;transition:background .18s}
.tgpu-icon-btn:hover{background:rgba(183,145,80,.18)}
.tgpu-kbd{font:600 .72rem var(--font-body);border:1px solid rgba(244,239,227,.35);border-radius:5px;padding:.05rem .35rem;opacity:.75}
.tgpu-langs{display:flex;border:1px solid rgba(183,145,80,.45);border-radius:999px;padding:3px}
.tgpu-lang{font:700 .78rem/1 var(--font-body);color:var(--cream);text-decoration:none;padding:.55rem .6rem;border-radius:999px;min-width:36px;text-align:center}
.tgpu-lang.is-on{background:var(--brand-gold);color:var(--brand-deep)}
.tgpu-lang:not(.is-on):hover{background:rgba(183,145,80,.18)}
.tgpu-burger{display:none;flex-direction:column;gap:4px;padding:0}
.tgpu-burger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform .2s,opacity .2s}
.tgpu-nav-open .tgpu-burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.tgpu-nav-open .tgpu-burger span:nth-child(2){opacity:0}
.tgpu-nav-open .tgpu-burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.tgpu-skip{z-index:1000}
@media (max-width:1020px){
  .tgpu-bar{grid-template-columns:minmax(0,1fr) auto}
  .tgpu-burger{display:inline-flex}
  .tgpu-kbd{display:none}
  .tgpu-nav{position:fixed;inset:68px 0 auto 0;max-height:calc(100dvh - 68px);overflow:auto;flex-direction:column;align-items:stretch;gap:.2rem;background:var(--brand-deep);padding:1rem 1.25rem 2rem;border-top:1px solid rgba(183,145,80,.25);transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s}
  .tgpu-nav-open .tgpu-nav{opacity:1;visibility:visible;transform:none}
  .tgpu-nav .tgpu-nav-link{justify-content:space-between;font-size:1.05rem;border-radius:12px;width:100%}
  .tgpu-dd-panel{position:static;opacity:1;visibility:visible;transform:none;display:none;background:rgba(255,255,255,.04);border-color:rgba(183,145,80,.2);box-shadow:none;margin:.2rem 0 .4rem}
  .tgpu-dd>button[aria-expanded="true"]+.tgpu-dd-panel{display:grid}
  .tgpu-dd-panel .tgpu-nav-link{color:var(--cream)}
  .tgpu-dd-panel .tgpu-nav-link:hover{background:rgba(183,145,80,.16);color:#fff}
}
@media (max-width:420px){.tgpu-logo small{display:none}.tgpu-lang{padding:.5rem .45rem;min-width:30px}}
.tgpu-lock{overflow:hidden}

/* Search overlay */
.tgpu-search{position:fixed;inset:0;z-index:1200;background:rgba(7,25,17,.62);backdrop-filter:blur(6px);display:grid;place-items:start center;padding:12vh 1rem 1rem}
.tgpu-search[hidden]{display:none}
.tgpu-search-card{position:relative;width:min(680px,100%);background:var(--paper);border-radius:var(--r-lg);box-shadow:0 30px 80px -20px rgba(0,0,0,.5);padding:1.1rem;animation:tgpuPop .22s var(--ease)}
.tgpu-search form{display:flex;align-items:center;gap:.6rem;background:#fff;border:1px solid var(--line);border-radius:999px;padding:.35rem .35rem .35rem 1rem;color:var(--brand-green)}
.tgpu-search input{flex:1;min-width:0;border:0;outline:0;font:500 1.05rem var(--font-body);background:transparent;color:var(--ink);min-height:44px}
.tgpu-search-quick{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.9rem}
.tgpu-search-quick a{font:600 .88rem var(--font-body);color:var(--brand-green);background:var(--cream);border:1px solid var(--line);border-radius:999px;padding:.5rem .85rem;text-decoration:none}
.tgpu-search-close{position:absolute;top:-.9rem;inset-inline-end:-.4rem;background:var(--brand-deep);color:var(--cream);border:1px solid var(--brand-gold);border-radius:999px;font:700 .75rem var(--font-body);padding:.45rem .7rem;cursor:pointer;min-height:36px}
@keyframes tgpuPop{from{opacity:0;transform:translateY(8px) scale(.98)}to{opacity:1;transform:none}}

/* Buttons */
.tgpu-btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:48px;padding:0 1.35rem;border-radius:999px;font:700 1rem var(--font-body);text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s}
.tgpu-btn:hover{transform:translateY(-1px)}
.tgpu-btn-gold{background:var(--brand-gold);color:var(--brand-deep);box-shadow:0 8px 22px -10px rgba(183,145,80,.9)}
.tgpu-btn-gold:hover{background:#c9a262}
.tgpu-btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(244,239,227,.45)}
.tgpu-btn-ghost:hover{background:rgba(255,255,255,.14)}

/* Hero */
.tgpu-hero{position:relative;isolation:isolate;overflow:hidden;background:var(--brand-deep);color:var(--cream);font-family:var(--font-body)}
.tgpu-hero-bg{position:absolute;inset:0;z-index:-2}
.tgpu-hero-bg img{width:100%;height:100%;object-fit:cover;object-position:62% center}
.tgpu-hero-home::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(7,28,19,.96) 0%,rgba(9,36,25,.88) 38%,rgba(12,47,34,.5) 70%,rgba(12,47,34,.25) 100%),linear-gradient(0deg,rgba(7,28,19,.7),transparent 40%)}
[dir="rtl"] .tgpu-hero-home::before{background:linear-gradient(270deg,rgba(7,28,19,.96) 0%,rgba(9,36,25,.88) 38%,rgba(12,47,34,.5) 70%,rgba(12,47,34,.25) 100%),linear-gradient(0deg,rgba(7,28,19,.7),transparent 40%)}
.tgpu-hero-inner{position:relative;padding:clamp(3.5rem,8vw,7rem) 0 clamp(3rem,6vw,5rem);max-width:720px}
.tgpu-hero-home{min-height:min(88vh,820px);display:flex;align-items:center}
.tgpu-hero-home .tgpu-wrap{width:min(1200px,100% - 2.5rem)}
.tgpu-hero h1{font-family:var(--font-display);color:#fff;font-size:clamp(2.35rem,1.4rem + 4.2vw,4.6rem);line-height:1.04;letter-spacing:-.02em;margin:.6rem 0 1rem;font-weight:600;text-wrap:balance}
.tgpu-hero h1 em{font-style:normal;color:var(--brand-gold);display:block}
[lang="ar"] .tgpu-hero h1,[dir="rtl"] .tgpu-hero h1{font-family:var(--font-arabic);line-height:1.35;letter-spacing:0}
.tgpu-hero-lead{font-size:clamp(1.05rem,.98rem + .4vw,1.3rem);line-height:1.6;color:rgba(244,239,227,.92);max-width:60ch;margin:0 0 1.6rem}
.tgpu-eyebrow{font:700 .78rem/1.3 var(--font-body);letter-spacing:.16em;text-transform:uppercase;color:var(--gold-ink);margin:0}
.tgpu-eyebrow-light{color:var(--brand-gold)}
[lang="ar"] .tgpu-eyebrow{letter-spacing:0;font-size:.95rem}
.tgpu-hero-search{display:flex;align-items:center;gap:.6rem;max-width:620px;background:#fff;border-radius:999px;padding:.35rem .35rem .35rem 1.1rem;color:var(--brand-green);box-shadow:0 18px 40px -18px rgba(0,0,0,.6)}
[dir="rtl"] .tgpu-hero-search{padding:.35rem 1.1rem .35rem .35rem}
.tgpu-hero-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font:500 1.02rem var(--font-body);color:var(--ink);min-height:44px}
.tgpu-hero-ctas{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.3rem}
.tgpu-hero-pills{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:1.6rem}
.tgpu-hero-pills a{font:600 .85rem var(--font-body);color:var(--cream);text-decoration:none;border:1px solid rgba(183,145,80,.5);border-radius:999px;padding:.45rem .85rem;background:rgba(7,28,19,.35);transition:background .18s}
.tgpu-hero-pills a:hover{background:rgba(183,145,80,.25)}
.tgpu-hero-quote{margin-top:1.8rem;font-family:var(--font-display);font-style:italic;color:rgba(244,239,227,.78);font-size:1.05rem;border-inline-start:2px solid var(--brand-gold);padding-inline-start:.9rem;max-width:46ch}
.tgpu-hero-hub{background:radial-gradient(1200px 500px at 85% -10%,rgba(183,145,80,.22),transparent 60%),linear-gradient(160deg,#0c2f22,#0a2419 70%)}
.tgpu-hero-split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:clamp(1.5rem,4vw,3.5rem);align-items:center}
.tgpu-hero-art{margin:0;padding:clamp(1rem,3vw,2.5rem) 0}
.tgpu-hero-art img{width:100%;height:auto;border-radius:var(--r-lg);box-shadow:0 30px 70px -25px rgba(0,0,0,.65);border:1px solid rgba(183,145,80,.35)}
html.tgpu-hub .hub-hero,html.tgpu-hub .approved-learning-banner{display:none!important}
@media (max-width:860px){.tgpu-hero-split{grid-template-columns:1fr}.tgpu-hero-hub .tgpu-hero-inner{padding-bottom:0}.tgpu-hero-art{padding-top:0}}
@media (max-width:720px){
  .tgpu-hero-home{min-height:auto}
  .tgpu-hero-home::before{background:linear-gradient(180deg,rgba(7,28,19,.78) 0%,rgba(7,28,19,.92) 55%,rgba(7,28,19,.98) 100%)}
  .tgpu-hero-bg img{object-position:center 30%}
  .tgpu-hero-inner{padding-top:2.75rem}
  .tgpu-hero-search{flex-wrap:nowrap}
  .tgpu-hero-search .tgpu-btn{padding:0 1rem}
  .tgpu-hero-ctas .tgpu-btn{flex:1 1 100%}
}

/* Sections, cards, tiles */
.tgpu-section{padding:clamp(3rem,6vw,5.5rem) 0;background:var(--paper);font-family:var(--font-body)}
.tgpu-section-tint{background:linear-gradient(180deg,var(--cream),var(--paper))}
.tgpu-head{margin-bottom:clamp(1.4rem,3vw,2.2rem);max-width:760px}
.tgpu-head h2{font-family:var(--font-display);color:var(--brand-deep);font-size:clamp(1.7rem,1.2rem + 2vw,2.6rem);line-height:1.12;margin:.4rem 0 0;font-weight:600}
[lang="ar"] .tgpu-head h2{font-family:var(--font-arabic);line-height:1.4}
.tgpu-head-row{display:flex;justify-content:space-between;align-items:end;gap:1rem;max-width:none;flex-wrap:wrap}
.tgpu-link{font-weight:700;color:var(--brand-green-2);text-decoration:none;border-bottom:2px solid var(--brand-gold);padding-bottom:2px}
.tgpu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1rem}
.tgpu-grid-4{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.tgpu-card{position:relative;display:flex;flex-direction:column;gap:.5rem;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:1.3rem 1.3rem 2.8rem;text-decoration:none;color:var(--ink);box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s}
.tgpu-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--brand-gold)}
.tgpu-card h3{font-family:var(--font-display);color:var(--brand-deep);font-size:1.18rem;line-height:1.25;margin:0;font-weight:600}
[lang="ar"] .tgpu-card h3{font-family:var(--font-arabic);line-height:1.5}
.tgpu-card p{margin:0;color:var(--ink-muted);font-size:.95rem;line-height:1.55;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.tgpu-card-tag{align-self:flex-start;font:700 .7rem/1 var(--font-body);letter-spacing:.08em;text-transform:uppercase;color:var(--gold-ink);background:var(--cream);border:1px solid var(--line);border-radius:999px;padding:.35rem .6rem}
[lang="ar"] .tgpu-card-tag{letter-spacing:0;font-size:.8rem}
.tgpu-card-go{position:absolute;bottom:1rem;inset-inline-end:1.1rem;width:32px;height:32px;display:grid;place-items:center;border-radius:999px;background:var(--brand-deep);color:var(--brand-gold);font-weight:700;transition:transform .2s var(--ease)}
[dir="rtl"] .tgpu-card-go{transform:scaleX(-1)}
.tgpu-card:hover .tgpu-card-go{transform:translateX(3px)}
[dir="rtl"] .tgpu-card:hover .tgpu-card-go{transform:scaleX(-1) translateX(3px)}
.tgpu-tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}
.tgpu-tile{display:flex;flex-direction:column;gap:.55rem;padding:1.4rem;border-radius:var(--r-lg);background:var(--brand-deep);color:var(--cream);text-decoration:none;border:1px solid rgba(183,145,80,.3);transition:transform .22s var(--ease),box-shadow .22s,background .22s}
.tgpu-tile:hover{transform:translateY(-3px);background:var(--brand-green);box-shadow:var(--sh-2)}
.tgpu-tile b{font-family:var(--font-display);font-size:1.2rem;color:#fff;font-weight:600}
[lang="ar"] .tgpu-tile b{font-family:var(--font-arabic)}
.tgpu-tile-n{font-size:.85rem;color:var(--brand-gold);font-weight:700}
.tgpu-cat-icon{display:inline-grid;place-items:center;width:46px;height:46px;border-radius:14px;background:rgba(183,145,80,.16);color:var(--brand-gold);flex:0 0 auto}
.tgpu-library{border-bottom:1px solid var(--line)}
.tgpu-chips{display:flex;gap:.5rem;overflow-x:auto;padding-bottom:.4rem;margin-bottom:1.5rem;scrollbar-width:thin}
.tgpu-chip{appearance:none;white-space:nowrap;min-height:44px;padding:0 1rem;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--brand-green);font:700 .9rem var(--font-body);cursor:pointer;display:inline-flex;align-items:center;gap:.45rem;transition:background .18s,color .18s,border-color .18s}
.tgpu-chip span{font-size:.75rem;background:var(--cream);color:var(--gold-ink);border-radius:999px;padding:.15rem .45rem}
.tgpu-chip.is-on{background:var(--brand-deep);color:#fff;border-color:var(--brand-deep)}
.tgpu-chip.is-on span{background:var(--brand-gold);color:var(--brand-deep)}
.tgpu-cat{margin-top:2rem;scroll-margin-top:90px}
.tgpu-cat[hidden]{display:none}
.tgpu-cat-head{display:flex;align-items:center;gap:.8rem;margin-bottom:1rem}
.tgpu-cat-head .tgpu-cat-icon{background:var(--brand-deep)}
.tgpu-cat-head h3{font-family:var(--font-display);color:var(--brand-deep);margin:0;font-size:1.4rem;font-weight:600}
[lang="ar"] .tgpu-cat-head h3{font-family:var(--font-arabic)}
html.tgpu-ds .tgpu-card.tgpu-reveal,html.tgpu-ds .tgpu-tile.tgpu-reveal{opacity:0;transform:translateY(12px)}
html.tgpu-ds .tgpu-card.tgpu-reveal.is-in,html.tgpu-ds .tgpu-tile.tgpu-reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.tgpu-search-card{animation:none}}


/* ================= TGPU master portal architecture ================= */
html.tgpu-shell body>footer:not(.tgpu-footer){display:none!important}
.tgpu-master-intro .tgpu-head{max-width:900px}
.tgpu-master-lead{margin:1rem 0 0;color:var(--ink-muted);font-size:clamp(1.05rem,1rem + .25vw,1.2rem);line-height:1.75;max-width:72ch}
.tgpu-architecture{display:grid;grid-template-columns:minmax(220px,.7fr) minmax(0,2fr);gap:1rem;align-items:stretch}
.tgpu-architecture-root{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:.35rem;padding:1.6rem;border-radius:var(--r-lg);background:var(--brand-deep);color:#fff;border:1px solid rgba(183,145,80,.45);box-shadow:var(--sh-1)}
.tgpu-architecture-root strong{font-family:var(--font-display);font-size:2rem;color:#fff}
.tgpu-architecture-root span{font-weight:700;color:var(--brand-gold)}
.tgpu-architecture-branches{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}
.tgpu-architecture-branches a{display:flex;flex-direction:column;gap:.5rem;padding:1.35rem;border-radius:var(--r-lg);background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);text-decoration:none;color:var(--ink);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.tgpu-architecture-branches a:hover{transform:translateY(-3px);border-color:var(--brand-gold);box-shadow:var(--sh-2)}
.tgpu-architecture-branches strong{font-family:var(--font-display);color:var(--brand-deep);font-size:1.15rem}
.tgpu-architecture-branches span{color:var(--ink-muted);font-size:.92rem;line-height:1.5}
.tgpu-portal-card{min-height:240px}
.tgpu-footer{background:#081f17;color:rgba(244,239,227,.84);border-top:3px solid var(--brand-gold);font:400 .94rem/1.6 var(--font-body);padding:3.2rem 0 1.2rem}
.tgpu-footer-grid{display:grid;grid-template-columns:minmax(240px,1.4fr) repeat(4,minmax(140px,1fr));gap:2rem}
.tgpu-footer-grid>div{display:flex;flex-direction:column;align-items:flex-start;gap:.45rem}
.tgpu-footer-grid strong{color:#fff;font-size:.9rem;letter-spacing:.04em;text-transform:uppercase;margin-bottom:.35rem}
.tgpu-footer-grid a{color:rgba(244,239,227,.82);text-decoration:none}
.tgpu-footer-grid a:hover{color:var(--brand-gold);text-decoration:underline}
.tgpu-footer-brand p{max-width:40ch;margin:.6rem 0 0}
.tgpu-footer-endorsed{color:var(--brand-gold)!important;font-weight:700;font-size:.82rem}
.tgpu-footer-bottom{display:flex;justify-content:space-between;gap:1rem;align-items:center;border-top:1px solid rgba(183,145,80,.22);margin-top:2rem;padding-top:1rem;font-size:.82rem}
.tgpu-footer-bottom a{color:var(--brand-gold);text-decoration:none}
section[id]{scroll-margin-top:86px}
@media (max-width:980px){
  .tgpu-architecture{grid-template-columns:1fr}
  .tgpu-architecture-branches{grid-template-columns:repeat(3,minmax(0,1fr))}
  .tgpu-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tgpu-footer-brand{grid-column:1/-1}
}
@media (max-width:720px){
  .tgpu-architecture-branches{grid-template-columns:1fr}
  .tgpu-footer-grid{grid-template-columns:1fr}
  .tgpu-footer-brand{grid-column:auto}
  .tgpu-footer-bottom{align-items:flex-start;flex-direction:column}
}