*{box-sizing:border-box}
  :root{
    /* category colors: crypto = soft gray, AI = black */
    --cat-crypto-bg-1:#f8f7fc;
    --cat-crypto-bg-2:#edebf5;
    --cat-ai-bg:#0a0a0c;
  }
  html,body{margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:var(--font-sans);
    background:var(--bg);
    color:var(--fg1);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  a{color:inherit;text-decoration:none}
  .wrap{max-width:1200px;margin:0 auto;padding:0 32px}

  /* ============== reusable button ============== */
  /* ============== shared button system — color-only hover/press, no shadows ============== */
  .btn{
    font-family:var(--font-sans);font-size:15px;line-height:1;font-weight:400;
    border:1px solid transparent;cursor:pointer;border-radius:var(--radius-md);
    padding:13px 24px;display:inline-flex;align-items:center;gap:8px;
    transition:background var(--dur) var(--ease-out),
      border-color var(--dur) var(--ease-out),color var(--dur) var(--ease-out),
      transform var(--dur-fast) var(--ease-out);
  }
  .btn:active{transform:scale(0.96)}
  /* primary: violet fill on light surfaces */
  .btn-pri{background:var(--accent);color:var(--white)}
  .btn-pri:hover{background:var(--primary-hover)}
  .btn-pri:active{background:var(--primary-press)}
  /* secondary: hairline outline */
  .btn-sec{background:transparent;color:var(--fg1);border-color:var(--border)}
  .btn-sec:hover{border-color:var(--accent);color:var(--accent)}
  .btn-sec:active{border-color:var(--primary-press);color:var(--primary-press)}
  /* ghost: text only */
  .btn-ghost{background:transparent;color:var(--fg2)}
  .btn-ghost:hover{color:var(--fg1)}
  /* glass: for dark / violet / black surfaces */
  .btn-glass{background:rgba(255,255,255,0.08);color:var(--white);border-color:rgba(255,255,255,0.22);backdrop-filter:saturate(140%) blur(12px);-webkit-backdrop-filter:saturate(140%) blur(12px)}
  .btn-glass:hover{background:rgba(255,255,255,0.16);border-color:rgba(255,255,255,0.32)}
  .btn-glass:active{background:rgba(255,255,255,0.24)}
  /* "coming soon" — interactive, but pressing pops the badge instead of navigating */
  .btn-soon{position:relative;cursor:pointer;
    color:rgba(255,255,255,0.95);background:rgba(255,255,255,0.06);border-color:rgba(255,255,255,0.18)}
  .btn-soon:hover{background:rgba(255,255,255,0.11);border-color:rgba(255,255,255,0.28)}
  .btn-soon:active{transform:scale(0.96)}
  .btn-soon .soon-badge{
    font-family:var(--font-mono);font-size:8.5px;letter-spacing:var(--tracking-mono);text-transform:uppercase;
    color:var(--white);background:rgba(255,255,255,0.18);border:1px solid rgba(255,255,255,0.32);
    border-radius:var(--radius-pill);padding:3px 7px;line-height:1;transform-origin:center;will-change:transform}
  .btn-soon .soon-badge.pop{animation:soonPop 0.52s var(--ease-out)}
  @keyframes soonPop{
    0%{transform:scale(1)} 22%{transform:scale(1.34);background:var(--accent);border-color:var(--accent)}
    48%{transform:scale(0.88)} 68%{transform:scale(1.14)} 84%{transform:scale(0.97)}
    100%{transform:scale(1)}
  }

  /* ============== nav ============== */
  .nav{
    position:sticky;top:0;z-index:100;
    background:rgba(255,255,255,0.72);
    backdrop-filter:saturate(180%) blur(14px);
    -webkit-backdrop-filter:saturate(180%) blur(14px);
    border-bottom:1px solid var(--border-faint);
  }
  .nav-inner{
    max-width:1200px;margin:0 auto;padding:0 32px;height:68px;position:relative;
    display:flex;align-items:center;gap:8px;
  }
  /* brand */
  .brand{display:flex;align-items:center;gap:10px;padding-right:8px}
  .brand .logomark{height:22px;width:auto;display:block}
  .brand .wordmark{height:16px;width:auto;display:block}
  .brand .wordmark path,.brand .wordmark rect{fill:var(--fg1)}

  /* center nav group — absolutely centered in the bar */
  .nav-group{display:flex;align-items:center;gap:2px;
    position:absolute;left:50%;top:50%;transform:translate(-50%,-50%)}
  .nav-item{position:relative}
  .nav-trigger{
    display:inline-flex;align-items:center;gap:6px;
    padding:9px 14px;border-radius:var(--radius-md);
    font-size:15px;color:var(--fg1);cursor:pointer;
    transition:background var(--dur) var(--ease-out),color var(--dur) var(--ease-out);
  }
  .nav-trigger .chev{font-family:var(--font-mono);font-style:normal;font-size:16px;line-height:1;color:var(--fg3);display:inline-block;transform:rotate(90deg);transition:transform var(--dur) var(--ease-out),color var(--dur) var(--ease-out)}
  .nav-item:hover .nav-trigger,.nav-item:focus-within .nav-trigger{background:rgba(109,69,255,0.09);color:var(--accent)}
  .nav-item:hover .nav-trigger .chev,.nav-item:focus-within .nav-trigger .chev{transform:rotate(-90deg);color:var(--accent)}

  .nav-right{display:flex;align-items:center;gap:6px;margin-left:auto}

  /* ============== mega menu ============== */
  .mega{
    position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(6px);
    width:380px;background:var(--bg);
    border:1px solid var(--border);border-radius:var(--radius-lg);
    box-shadow:var(--shadow-lg);
    padding:10px;
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity var(--dur) var(--ease-out),transform var(--dur) var(--ease-out),visibility var(--dur);
  }
  /* invisible bridge so the mouse can travel into the panel */
  .mega::before{content:"";position:absolute;top:-16px;left:0;right:0;height:16px}
  .nav-item:hover .mega,.nav-item:focus-within .mega{
    opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0);
  }
  .mega-link{
    display:flex;gap:14px;align-items:flex-start;
    padding:13px;border-radius:var(--radius-md);
    transition:background var(--dur) var(--ease-out);
  }
  .mega-link:hover{background:var(--bg-subtle)}
  /* accent menu item (e.g. $ARX Token): solid primary box, white foreground */
  .mega-link--accent{background:var(--accent)}
  .mega-link--accent:hover{background:var(--primary-hover)}
  .mega-link--accent .mega-tx .t,
  .mega-link--accent .mega-tx .t .arr{color:#fff}
  .mega-link--accent .mega-tx .d{color:rgba(255,255,255,0.82)}
  .m-link--accent{background:var(--accent);border-radius:var(--radius-md)}
  .m-link.m-link--accent .t{color:#fff}
  .m-link.m-link--accent .d{color:rgba(255,255,255,0.82)}
  .m-link--accent .mega-ico{background:rgba(255,255,255,0.16);color:#fff}
  /* coming-soon menu items: non-interactive, muted, with a small tag */
  .mega-link--soon{opacity:0.6;cursor:default}
  .mega-link--soon:hover{background:transparent}
  .mega-soon,.m-link--soon .mega-soon{display:inline-block;margin-left:8px;font-family:var(--font-mono);font-size:9px;
    letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--fg3);
    border:1px solid var(--border);border-radius:var(--radius-pill);padding:1px 7px;vertical-align:middle}
  .m-link--soon{opacity:0.6}
  .mega-ico{
    flex:none;width:40px;height:40px;border-radius:var(--radius-md);
    display:grid;place-items:center;
    background:var(--accent-soft);color:var(--accent);
    transition:background var(--dur) var(--ease-out),color var(--dur) var(--ease-out);
  }
  .mega-link:hover .mega-ico{background:var(--accent);color:var(--white)}
  .mega-ico svg{width:20px;height:20px}
  .mega-tx{display:flex;flex-direction:column;align-items:flex-start}
  .mega-tx .t{font-size:15px;font-weight:500;position:relative;padding-right:20px;display:inline-block}
  .mega-tx .t .arr{position:absolute;right:0;top:0.05em;font-family:var(--font-mono);font-style:normal;font-size:15px;line-height:1.2;opacity:0;transform:translateX(-3px);transition:opacity var(--dur) var(--ease-out),transform var(--dur) var(--ease-out);color:var(--accent)}
  .mega-link:hover .mega-tx .t .arr{opacity:1;transform:translateX(0)}
  .mega-tx .d{font-size:13px;color:var(--fg2);line-height:1.45;margin-top:3px}
  .mega-foot{
    margin-top:4px;padding:11px 13px;border-top:1px solid var(--border-faint);
    display:flex;align-items:center;justify-content:flex-start;
  }
  .mega-foot .lbl{font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--fg3)}
  .mega-foot a{font-size:13px;color:var(--accent);display:inline-flex;align-items:center;gap:5px}
  .mega-foot a .arr{font-family:var(--font-mono);font-style:normal;font-size:14px;line-height:1;transition:transform var(--dur) var(--ease-out)}
  .mega-foot a:hover .arr{transform:translateX(3px)}

  /* category-columned mega (Products) */
  .mega--cats{width:600px}
  .mega-cats{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .mega-col{padding:14px 10px 10px;border-radius:var(--radius-md)}
  .mega-col--crypto{background:linear-gradient(160deg,var(--cat-crypto-bg-1) 0%,var(--cat-crypto-bg-2) 100%)}
  .mega-col--ai{background:var(--cat-ai-bg)}
  .mega-cat-head{
    font-family:var(--font-mono);font-size:12px;letter-spacing:var(--tracking-mono);
    text-transform:uppercase;color:var(--accent);padding:2px 13px 10px;margin:0 6px 6px;
    border-bottom:1px solid rgba(20,12,50,0.12);
  }
  .mega-col--ai .mega-cat-head{color:#fff;border-bottom-color:rgba(255,255,255,0.16)}
  .mega-col--crypto .mega-link:hover{background:rgba(20,12,50,0.07)}
  .mega-col--ai .mega-link:hover{background:rgba(255,255,255,0.12)}
  .mega-col--ai .mega-tx .t{color:var(--invert-fg1)}
  .mega-col--ai .mega-tx .d{color:var(--invert-fg2)}

  /* ============== mobile toggle ============== */
  .burger{display:none;background:transparent;border:0;cursor:pointer;padding:8px;color:var(--fg1)}
  .burger svg{width:24px;height:24px;display:block}

  /* ============== reusable panel component ============== */
  /* A rounded-corner box that can hold any content. Variants set the fill;
     drop in .panel__dots / .panel__glow for texture, .panel__inner for content. */
  .panel{position:relative;overflow:hidden;border-radius:32px}
  .panel__dots{position:absolute;inset:0;z-index:0;pointer-events:none}
  .panel__glow{position:absolute;inset:0;z-index:0;pointer-events:none}
  .panel__inner{position:relative;z-index:1}
  .panel--accent{background:var(--accent);color:var(--white)}
  /* soft white glow on the top edge + top corners for a subtle 3D lift */
  .panel--accent::before{
    content:"";position:absolute;inset:0;z-index:0;pointer-events:none;border-radius:inherit;
    background:
      radial-gradient(130% 70% at 50% -22%, rgba(255,255,255,0.24), rgba(255,255,255,0) 52%),
      radial-gradient(55% 55% at 2% 0%, rgba(255,255,255,0.20), rgba(255,255,255,0) 58%),
      radial-gradient(55% 55% at 98% 0%, rgba(255,255,255,0.20), rgba(255,255,255,0) 58%);
  }
  .panel--invert{background:var(--invert-bg);color:var(--invert-fg1)}
  /* Boxed content on the black AI/Blackthorn panel: lift text off the dark
     surface (the default uc/sec-head colours assume a light panel). Violet
     eyebrows/numbers (.ds-label,.uc-num,.uc-k,.uc-vlabel) already pop on black. */
  .panel--invert .sec-head h2,
  .panel--invert .uc-title{color:var(--invert-fg1)}
  .panel--invert .sec-head .lead,
  .panel--invert .uc-block p{color:var(--invert-fg2)}
  .panel--invert .uc-block.is-problem p{color:var(--invert-fg3)}
  .panel--invert .uc-visual{background:var(--invert-bg-card);border-color:var(--invert-border)}
  /* use-cards inside the black AI box: raised dark surface, white text */
  .panel--invert .use-card{background:var(--invert-bg-card);border-color:var(--invert-border)}
  .panel--invert .use-card h3{color:var(--invert-fg1)}
  .panel--invert .use-card p{color:var(--invert-fg2)}
  .panel--invert .use-card:hover{border-color:var(--violet-300)}
  .panel--subtle{background:var(--bg-subtle);color:var(--fg1)}
  .panel--accent .panel__dots{
    background-image:radial-gradient(rgba(255,255,255,0.55) 1.4px,transparent 1.5px);
    background-size:24px 24px;opacity:.16;
    -webkit-mask-image:radial-gradient(ellipse 78% 65% at 50% 20%,#000 0%,transparent 72%);
            mask-image:radial-gradient(ellipse 78% 65% at 50% 20%,#000 0%,transparent 72%);
  }
  .panel--accent .panel__glow{
    background:radial-gradient(ellipse 52% 42% at 50% 112%, rgba(255,255,255,0.6), rgba(227,217,255,0.28) 46%, rgba(255,255,255,0) 72%);
  }
  /* primary on the violet panel flips to a white fill for contrast (color-only states) */
  .panel--accent .btn-pri{background:var(--white);color:var(--accent)}
  .panel--accent .btn-pri:hover{background:var(--violet-50)}
  .panel--accent .btn-pri:active{background:var(--violet-100)}
  .panel--accent .btn-sec{border-color:rgba(255,255,255,0.45);color:var(--white);background:transparent}
  .panel--accent .btn-sec:hover{border-color:var(--white);background:rgba(255,255,255,0.10);color:var(--white)}

  /* ============== hero ============== */
  .hero{height:calc(100vh - 68px);min-height:620px;display:flex;flex-direction:column;padding:24px 0 0}
  .hero > .wrap{flex:1;display:flex;min-height:0;width:100%}
  .hero-panel{flex:1;display:flex;min-height:0}
  .hero-panel .panel__inner{flex:1;padding:48px 32px;max-width:900px;margin:0 auto;
    display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
  .hero .ds-label{display:inline-flex;align-items:center;gap:8px;margin-bottom:26px;color:var(--violet-100)}
  .hero-news{
    display:inline-flex;align-items:center;gap:10px;margin-bottom:24px;
    padding:7px 8px 7px 12px;border-radius:var(--radius-pill);
    background:rgba(255,255,255,0.10);border:1px solid rgba(255,255,255,0.22);
    -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
    font-size:13.5px;color:var(--white);
    transition:background var(--dur) var(--ease-out),border-color var(--dur) var(--ease-out),transform var(--dur-fast) var(--ease-out);
  }
  .hero-news:hover{background:rgba(255,255,255,0.16);border-color:rgba(255,255,255,0.32)}
  .hero-news:active{transform:scale(0.98)}
  .hn-live{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:10px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--violet-100)}
  .hn-live i{width:7px;height:7px;border-radius:50%;background:#fff;box-shadow:0 0 8px rgba(255,255,255,0.9);animation:gsPulse 1.7s var(--ease-in-out) infinite}
  .hn-text{white-space:nowrap}
  .hero-news .arr{font-family:var(--font-mono);font-style:normal;font-size:16px;line-height:1;color:var(--violet-100);transition:transform var(--dur) var(--ease-out)}
  .hero-news:hover .arr{transform:translateX(3px)}
  @media (max-width:560px){.hn-text{white-space:normal}}
  .rotw{display:inline;color:inherit}
  .rotw-w{display:inline-block}
  .rotw-w.out{animation:rotwOut 0.34s var(--ease-out) forwards}
  .rotw-w.in{animation:rotwIn 0.42s var(--ease-out)}
  @keyframes rotwOut{from{opacity:1;transform:translateY(0);filter:blur(0)}to{opacity:0;transform:translateY(-0.5em);filter:blur(6px)}}
  @keyframes rotwIn{from{opacity:0;transform:translateY(0.5em);filter:blur(6px)}to{opacity:1;transform:translateY(0);filter:blur(0)}}
  @media (prefers-reduced-motion: reduce){.rotw-w.out,.rotw-w.in{animation:none}}
  /* leading rotating word in a centered hero: reserve the widest word's width
     (data-longest) so the preceding text ("The") never shifts as the word
     changes, and keep the word on one line */
  .rotw--lead{display:inline-grid;text-align:left}
  .rotw--lead::before{content:attr(data-longest);grid-area:1/1;visibility:hidden;white-space:nowrap}
  .rotw--lead .rotw-w{grid-area:1/1;justify-self:start;white-space:nowrap}
  .hero h1{
    font-size:var(--text-display);line-height:var(--lh-tight);letter-spacing:var(--tracking-display);
    font-weight:400;margin:0;max-width:15ch;color:var(--white);
  }
  .hero h1 .hl{color:var(--violet-100)}
  .hero .sub{
    font-size:var(--text-lg);line-height:var(--lh-normal);color:rgba(255,255,255,0.82);
    margin:28px auto 0;max-width:52ch;
  }
  .hero-cta{display:flex;gap:12px;margin-top:40px;flex-wrap:wrap;justify-content:center}

  /* ============== trusted band ============== */
  .trusted{padding:26px 0 30px;position:relative;z-index:1}
  .trusted .cap{
    font-family:var(--font-mono);font-size:12px;letter-spacing:var(--tracking-mono);
    text-transform:uppercase;color:var(--fg3);margin-bottom:22px;text-align:center;
  }
  .marquee{
    position:relative;overflow:hidden;
    -webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
            mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
  }
  .marquee-track{display:flex;width:max-content;animation:scroll 34s linear infinite}
  @keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
  .logo-cell{
    flex:none;display:flex;align-items:center;justify-content:center;
    pointer-events:none;user-select:none;
    padding:0 48px;height:56px;
    color:var(--ink-400);font-size:21px;font-weight:500;letter-spacing:-0.01em;
    white-space:nowrap;
    opacity:.75;transition:opacity var(--dur) var(--ease-out),color var(--dur) var(--ease-out);
  }
  .logo-cell:hover{opacity:1;color:var(--fg1)}
  .logo-cell .mono{font-family:var(--font-mono);letter-spacing:.04em}
  .logo-cell img{display:block;width:auto;height:auto;object-fit:contain}

  /* ============== mobile menu ============== */
  .mobile{
    position:fixed;inset:68px 0 0;z-index:99;background:var(--bg);
    transform:translateX(100%);transition:transform var(--dur-slow) var(--ease-out);
    overflow-y:auto;padding:18px 24px 40px;
  }
  .mobile.open{transform:translateX(0)}
  .m-sec{border-bottom:1px solid var(--border-faint)}
  .m-head{
    width:100%;background:transparent;border:0;cursor:pointer;
    font-family:var(--font-sans);font-size:19px;color:var(--fg1);
    display:flex;align-items:center;justify-content:space-between;
    padding:20px 4px;
  }
  .m-head svg{width:20px;height:20px;color:var(--fg3);transition:transform var(--dur) var(--ease-out)}
  .m-head.open svg{transform:rotate(180deg);color:var(--accent)}
  .m-panel{max-height:0;overflow:hidden;transition:max-height var(--dur-slow) var(--ease-out)}
  .m-link{display:flex;gap:13px;align-items:center;padding:14px 8px;color:var(--fg2)}
  .m-link .mega-ico{width:36px;height:36px}
  .m-link .mega-ico svg{width:18px;height:18px}
  .m-link .t{font-size:16px;font-weight:500;color:var(--fg1)}
  .m-link .d{font-size:13px;color:var(--fg3);margin-top:1px}
  .m-cat{font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--accent);padding:16px 8px 6px;margin-top:4px;border-bottom:1px solid var(--border-faint)}
  .mobile .btn{width:100%;justify-content:center;margin-top:28px;padding:16px}

  /* ============== responsive ============== */
  @media (max-width:900px){
    .nav-group,.nav-right .btn{display:none}
    .burger{display:block}
    .wrap{padding:0 22px}
    .nav-inner{padding:0 22px}
    .hero h1{font-size:54px}
    .hero{height:auto;min-height:0;padding:18px 0 0}
    .hero-panel .panel__inner{padding:64px 24px}
    .panel{border-radius:24px}
    .hero .ds-label{margin-bottom:18px}
  }
  @media (max-width:560px){
    .hero h1{font-size:40px}
    .panel{border-radius:18px}
    .hero-panel .panel__inner{padding:52px 20px}
    .hero .sub{font-size:16px}
    .hero-cta{flex-direction:column;align-items:stretch}
    .hero-cta .btn{justify-content:center}
    .logo-cell{padding:0 30px;font-size:18px}
  }
  body.menu-open{overflow:hidden}

  /* ============== intro / how it works ============== */
  .intro{padding:104px 0 8px;text-align:center}
  .intro .ds-label{display:inline-block;color:var(--accent);margin-bottom:20px}
  .intro h2{
    font-size:var(--text-h1);line-height:var(--lh-tight);letter-spacing:var(--tracking-display);
    font-weight:400;margin:0 auto;max-width:18ch;color:var(--fg1);
  }
  .intro h2 .hl{color:var(--accent)}
  .intro p{font-size:var(--text-lg);line-height:var(--lh-normal);color:var(--fg2);margin:22px auto 0;max-width:56ch}
  .intro-diagram{margin-top:8px}

  /* ============== how it works (MPC pipeline) ============== */
  .howit{padding:96px 0;text-align:center}
  .howit .ds-label{display:inline-block;color:var(--accent);margin-bottom:18px}
  .howit h2{font-size:var(--text-h1);line-height:var(--lh-tight);letter-spacing:var(--tracking-display);font-weight:400;margin:0 auto;max-width:18ch;color:var(--fg1)}
  .howit h2 .hl{color:var(--accent)}
  .howit-lead{font-size:var(--text-lg);line-height:var(--lh-normal);color:var(--fg2);margin:22px auto 0;max-width:60ch}
  /* --- MPC flow diagram (parties → encrypt → cluster → outputs) --- */
  .hdiag-shell{
    --hd-card:#fff; --hd-card-2:var(--bg-raised);
    --hd-ink1:var(--fg1); --hd-ink2:var(--fg2); --hd-ink3:var(--fg3);
    --hd-border:var(--border); --hd-border-on:rgba(109,69,255,0.45);
    --hd-rail:var(--ink-100); --hd-mono:var(--accent);
    margin:52px auto 0; max-width:1140px; text-align:left;
    border-radius:var(--radius-xl); padding:8px;
    transition:background var(--dur-slow) var(--ease-out);
  }
  .hdiag-shell[data-surface="black"]{
    --hd-card:var(--invert-bg-card); --hd-card-2:var(--invert-bg-raised);
    --hd-ink1:var(--invert-fg1); --hd-ink2:var(--invert-fg2); --hd-ink3:var(--invert-fg3);
    --hd-border:var(--invert-border); --hd-border-on:rgba(138,99,255,0.65);
    --hd-rail:rgba(255,255,255,0.10); --hd-mono:var(--violet-300);
    background:var(--invert-bg); padding:26px 22px 22px;
  }
  .hdiag{position:relative; width:100%; height:480px}
  .hdiag-canvas{position:absolute; inset:0; width:100%; height:100%; z-index:1}
  .hd-cards{position:absolute; inset:0; z-index:2; pointer-events:none}

  /* generic card */
  .hd-card{
    position:absolute; box-sizing:border-box;
    background:var(--hd-card); border:1px solid var(--hd-border);
    border-radius:var(--radius-md); padding:11px 13px;
    transition:border-color 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out), transform 0.45s var(--ease-out);
    will-change:transform;
  }
  .hd-tag{display:block; font-family:var(--font-mono); font-size:9px; letter-spacing:var(--tracking-mono);
    text-transform:uppercase; color:var(--hd-mono); white-space:nowrap}
  .hd-row{display:flex; align-items:center; gap:9px; margin-top:9px}
  .hd-icos{position:relative; width:18px; height:18px; flex:none; color:var(--hd-ink3)}
  .hd-icos svg{position:absolute; inset:0; width:18px; height:18px; opacity:0; transition:opacity 0.3s var(--ease-out)}
  .hd-val{font-family:var(--font-mono); font-size:16px; letter-spacing:0.02em; color:var(--hd-ink1);
    font-variant-numeric:tabular-nums; white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
  .hd-state{display:block; margin-top:8px; font-family:var(--font-mono); font-size:8.5px;
    letter-spacing:var(--tracking-mono); text-transform:uppercase; color:var(--hd-ink3)}
  /* lock states */
  .hd-party[data-lock="plain"] .i-open{opacity:1}
  .hd-party[data-lock="enc"] .i-lock{opacity:1}
  .hd-party[data-lock="enc"]{border-color:var(--hd-border-on)}
  .hd-party[data-lock="done"] .i-done{opacity:1}
  .hd-party[data-lock="done"]{border-color:var(--hd-border-on)}
  .hd-party[data-lock="done"] .i-done{color:var(--success)}
  .hd-party.glow{box-shadow:var(--glow-violet-soft)}

  /* public output card */
  .hd-pub{border-color:var(--hd-border)}
  .hd-pub.revealed{border-color:var(--hd-border-on); box-shadow:var(--glow-violet-soft)}
  .hd-pub .hd-pub-val{font-family:var(--font-sans); font-weight:400; font-size:30px; letter-spacing:-0.02em;
    color:var(--hd-ink1); line-height:1; margin-top:12px; min-height:30px;
    opacity:0; transform:translateY(4px); transition:opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out)}
  .hd-pub.revealed .hd-pub-val{opacity:1; transform:none}
  .hd-pub .hd-pub-eq{font-family:var(--font-mono); font-size:11px; letter-spacing:0.04em; color:var(--hd-ink2);
    margin-top:9px; opacity:0; transition:opacity 0.5s var(--ease-out) 0.1s}
  .hd-pub.revealed .hd-pub-eq{opacity:1}
  .hd-pub .hd-chain{display:flex; align-items:center; gap:7px; margin-top:12px;
    font-family:var(--font-mono); font-size:8.5px; letter-spacing:var(--tracking-mono); text-transform:uppercase;
    color:var(--hd-ink3); opacity:0; transition:opacity 0.5s var(--ease-out) 0.2s}
  .hd-pub.revealed .hd-chain{opacity:1}
  .hd-chain i{width:6px; height:6px; border-radius:50%; background:var(--success); box-shadow:0 0 7px var(--success); flex:none}

  /* cluster badge */
  .hd-cbadge{position:absolute; z-index:3; display:flex; align-items:center; gap:8px;
    transform:translate(-50%,0); white-space:nowrap; pointer-events:none}
  .hd-cb-dot{width:6px; height:6px; border-radius:50%; background:var(--accent); box-shadow:0 0 8px var(--accent); flex:none}
  .hd-cbadge[data-surface="black"] .hd-cb-dot{background:var(--violet-300); box-shadow:0 0 8px var(--violet-300)}
  .hd-cb-txt{font-family:var(--font-mono); font-size:9.5px; letter-spacing:var(--tracking-mono); text-transform:uppercase; color:var(--hd-mono)}
  .hd-cb-meta{font-family:var(--font-mono); font-size:9.5px; letter-spacing:var(--tracking-mono); text-transform:uppercase; color:var(--hd-ink3); font-variant-numeric:tabular-nums}

  /* footer: progress + caption */
  .hd-foot{max-width:1140px; margin:18px auto 0; padding:0 14px;
    display:flex; flex-direction:column; align-items:center; gap:14px; text-align:center}
  .hd-prog{display:flex; gap:7px; align-items:center}
  .hd-seg{height:3px; width:30px; border-radius:2px; background:var(--hd-rail); overflow:hidden; position:relative; transition:width 0.3s var(--ease-out)}
  .hdiag-shell[data-surface="black"] ~ .hd-foot .hd-seg{background:rgba(255,255,255,0.12)}
  .hd-seg.done::after{content:""; position:absolute; inset:0; background:var(--accent)}
  .hd-seg.active{width:54px}
  .hd-seg.active::after{content:""; position:absolute; inset:0; transform-origin:left; background:var(--accent); animation:hdSeg var(--seg-dur,2600ms) linear forwards}
  @keyframes hdSeg{from{transform:scaleX(0)}to{transform:scaleX(1)}}
  .hd-cap{min-height:26px; display:flex; align-items:baseline; gap:12px; justify-content:center; flex-wrap:wrap}
  .hd-cap-lbl{font-family:var(--font-mono); font-size:11px; letter-spacing:var(--tracking-mono); text-transform:uppercase; color:var(--accent); white-space:nowrap}
  .hd-cap-txt{font-size:15px; color:var(--fg2); line-height:1.4}

  @media (prefers-reduced-motion: reduce){
    .hd-seg.active::after{animation:none; transform:none}
  }
  @media (max-width:820px){
    .hdiag{height:560px}
  }
  @media (max-width:560px){
    .hdiag{height:600px}
    .hd-cap-txt{font-size:13.5px}
  }
  @media (max-width:760px){
    .howit{padding:64px 0}
    .howit h2{font-size:34px}
  }
  .intro-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:52px;text-align:left}
  .intro-card{
    display:flex;flex-direction:column;min-width:0;background:var(--bg);border:1px solid var(--border);
    border-radius:var(--radius-lg);padding:28px 28px 24px;box-shadow:var(--shadow-sm);color:inherit;
    transition:border-color 0.18s var(--ease-out),box-shadow 0.18s var(--ease-out);
  }
  .intro-card:hover{border-color:var(--accent)}
  .ic-cat{font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--accent);margin-bottom:14px}
  .intro-card h3{font-size:var(--text-h4);font-weight:500;margin:0;color:var(--fg1);letter-spacing:-0.01em}
  .intro-card p{font-size:var(--text-body);color:var(--fg2);line-height:var(--lh-normal);margin:10px 0 20px;max-width:none}
  .ic-link{margin-top:auto;font-size:14px;color:var(--accent);display:inline-flex;align-items:center;gap:8px}
  .ic-chev{font-family:var(--font-mono);font-style:normal;font-size:19px;line-height:1;transition:transform 0.18s var(--ease-out)}
  .tm{font-size:0.78em;letter-spacing:0;font-weight:400}
  .bt-name{font-weight:700}
  .arx{font-weight:700}
  .intro-card:hover .ic-chev{transform:translateX(3px)}
  /* AI card: black focal treatment */
  .intro-card--dark{background:var(--cat-ai-bg);border:0;position:relative;overflow:hidden}
  /* full-brightness video; black gradient anchored full-black in the top-left, fading out */
  .intro-card--dark .ic-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;pointer-events:none;
    opacity:0;transition:opacity 4.5s var(--ease-out) 0.5s}
  .intro-card--dark.video-in .ic-video{opacity:1}
  .intro-card--dark::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
    background:linear-gradient(122deg,rgba(0,0,0,1) 0%,rgba(0,0,0,1) 50%,rgba(0,0,0,0) 90%)}
  .intro-card--dark > h3,.intro-card--dark > p,.intro-card--dark > .ic-link{position:relative;z-index:2;text-shadow:0 1px 14px rgba(0,0,0,0.55)}
  .intro-card--crypto{background:linear-gradient(160deg,var(--cat-crypto-bg-1) 0%,var(--cat-crypto-bg-2) 100%);border:0;box-shadow:none}
  .intro-card--crypto:hover{border:0;box-shadow:inset 0 0 0 1px var(--accent)}
  .intro-card--dark:hover{box-shadow:inset 0 0 0 1px var(--white),var(--shadow-sm)}
  .intro-card--dark h3{color:var(--invert-fg1)}
  .intro-card--dark p{color:var(--invert-fg2)}
  .intro-card--dark .ic-cat{color:var(--violet-300)}
  .intro-card--dark .bt-name{color:var(--invert-fg1)}
  /* blockchain live counter + rotating logo band */
  .bc-live{margin-top:24px;padding-top:18px;border-top:1px solid var(--border-faint);display:flex;align-items:center;gap:16px}
  .bc-count{flex:none;max-width:48%}
  .bc-num{display:block;font-size:23px;font-weight:600;color:var(--fg1);font-variant-numeric:tabular-nums;letter-spacing:-0.02em;line-height:1.05}
  .bc-num.skel{width:148px;height:24px;border-radius:6px;color:transparent;
    background:linear-gradient(90deg,rgba(15,12,40,0.07) 25%,rgba(15,12,40,0.14) 37%,rgba(15,12,40,0.07) 63%);
    background-size:400% 100%;animation:bcSkel 1.4s ease-in-out infinite}
  @keyframes bcSkel{0%{background-position:100% 0}100%{background-position:-100% 0}}
  .bc-cap{display:block;font-size:11.5px;color:var(--fg3);line-height:1.3;margin-top:3px}
  .bc-band{flex:1;min-width:0;overflow:hidden;
    -webkit-mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent);
            mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent)}
  .bc-track{display:flex;align-items:center;width:max-content;animation:scroll 24s linear infinite}
  .bc-logo{height:26px;width:26px;flex:none;object-fit:contain;display:block;margin-right:24px}
  @media (max-width:760px){
    .intro{padding:64px 0 4px}
    .intro h2{font-size:34px}
    .intro p{font-size:16px}
    .intro-cards{grid-template-columns:1fr;gap:14px;margin-top:34px}
  }

  /* ============== globe section ============== */
  .globe-sec{padding:40px 0}
  .globe-panel{position:relative;min-height:700px}
  .globe-panel .panel__inner{position:relative;z-index:2;padding:64px 32px 0;display:flex;flex-direction:column;align-items:center;text-align:center;pointer-events:none}
  .globe-panel .ds-label,.globe-panel h2,.globe-panel .sub{text-shadow:0 2px 22px rgba(40,18,92,0.45)}
  .globe-panel .ds-label{display:inline-flex;align-items:center;gap:8px;margin-bottom:22px;color:var(--violet-100)}
  .globe-panel h2{
    font-size:var(--text-h1);line-height:var(--lh-tight);letter-spacing:var(--tracking-display);
    font-weight:400;margin:0;color:var(--white);max-width:none;white-space:nowrap;
  }
  .globe-panel .sub{font-size:var(--text-lg);line-height:var(--lh-normal);color:rgba(255,255,255,0.82);margin:22px auto 0;max-width:48ch}
  .globe-wrap{position:absolute;inset:0;z-index:0;overflow:hidden}
  .globe-canvas{
    position:absolute;inset:0;width:100%;height:100%;cursor:grab;touch-action:pan-y;
  }
  .globe-scrim{position:absolute;inset:0;z-index:1;pointer-events:none;
    background:linear-gradient(to bottom, rgba(109,69,255,0.6) 0%, rgba(109,69,255,0.2) 22%, rgba(109,69,255,0) 44%)}
  .globe-canvas canvas{width:100%!important;height:100%!important;display:block}
  .globe-canvas:active{cursor:grabbing}
  /* MXE program info card + leader line */
  .mxe-leader{position:absolute;inset:0;z-index:3;pointer-events:none;overflow:visible}
  .mxe-leader line{stroke:rgba(255,255,255,0.55);stroke-width:1;stroke-dasharray:3 3;opacity:0;transition:opacity 0.75s var(--ease-out)}
  .mxe-leader circle{fill:#fff;opacity:0;transition:opacity 0.75s var(--ease-out)}
  .mxe-card{
    position:absolute;z-index:4;pointer-events:auto;cursor:pointer;width:320px;
    background:rgba(18,9,44,0.7);border:1px solid rgba(255,255,255,0.16);border-radius:12px;
    padding:12px 14px;-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);
    box-shadow:0 16px 44px rgba(16,6,52,0.45);
    opacity:0;transition:opacity 0.75s var(--ease-out),transform 0.18s var(--ease-out),box-shadow 0.18s var(--ease-out),border-color 0.18s var(--ease-out);transform:translate(-50%,-100%)
  }
  .mxe-card.show{opacity:1}
  .mxe-card:hover{border-color:rgba(255,255,255,0.42);box-shadow:0 16px 44px rgba(16,6,52,0.45),var(--glow-violet-soft)}
  .mxe-card .mc-lbl{font-family:var(--font-mono);font-size:9.5px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--violet-100);display:flex;align-items:center;justify-content:center;gap:7px;white-space:nowrap}
  .mxe-card .mc-lbl i{width:6px;height:6px;border-radius:50%;background:#fff;box-shadow:0 0 7px rgba(255,255,255,0.9);flex:none}
  .mxe-card .mc-key{font-family:var(--font-mono);font-size:11.5px;color:#fff;margin-top:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.35}
  .mxe-card .mc-meta{font-size:11.5px;color:rgba(255,255,255,0.62);margin-top:8px;font-variant-numeric:tabular-nums}
  /* live network stats overlay */
  .globe-stats{margin-top:22px;display:flex;flex-direction:column;align-items:center;gap:16px;width:100%;max-width:840px;position:relative;opacity:0;transition:opacity 0.6s var(--ease-out)}
  .globe-stats.is-live{opacity:1}
  .gs-hero{display:flex;flex-direction:column;align-items:center;gap:9px}
  .gs-hero-num{font-size:30px;font-weight:500;color:var(--white);letter-spacing:-0.02em;line-height:1;font-variant-numeric:tabular-nums;text-shadow:0 2px 16px rgba(20,8,52,0.55)}
  .gs-hero-lbl{font-family:var(--font-mono);font-size:12px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--violet-100)}
  .globe-panel h2 .hl{color:var(--violet-100)}
  .gs-livelabel{gap:9px}
  .gs-quietlabel{color:var(--violet-100);opacity:0;display:none !important;transition:opacity 0.7s var(--ease-out)}
  .gs-quietlabel.show{display:inline-flex !important}
  .gs-quietlabel.show.in{opacity:1}
  .gs-livelabel i{width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 9px rgba(255,255,255,0.9);animation:gsPulse 1.7s var(--ease-in-out) infinite}
  .gs-live{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:rgba(255,255,255,0.72)}
  .gs-live i{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 9px var(--success);animation:gsPulse 1.7s var(--ease-in-out) infinite}
  @keyframes gsPulse{0%,100%{opacity:1}50%{opacity:.28}}
  .gs-row{display:flex;flex-wrap:wrap;justify-content:center;width:100%}
  .gs-stat{flex:1 1 0;min-width:128px;padding:2px 20px;display:flex;flex-direction:column;align-items:center;gap:6px;position:relative}
  .gs-stat + .gs-stat::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:1px;background:rgba(255,255,255,0.16)}
  .gs-num{font-size:25px;font-weight:500;color:var(--white);letter-spacing:-0.02em;line-height:1;font-variant-numeric:tabular-nums;text-shadow:0 2px 16px rgba(20,8,52,0.55);white-space:nowrap}
  .gs-lbl{font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--violet-100);text-shadow:0 1px 10px rgba(20,8,52,0.6)}
  .gs-sub{font-size:12px;color:rgba(255,255,255,0.66);font-variant-numeric:tabular-nums;text-shadow:0 1px 10px rgba(20,8,52,0.6)}
  .gs-rounds{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:7px 18px;font-family:var(--font-mono);font-size:12px;letter-spacing:0.04em;text-transform:uppercase;color:rgba(255,255,255,0.72);text-shadow:0 1px 10px rgba(20,8,52,0.65)}
  .gs-rounds b{color:var(--white);font-weight:400;font-variant-numeric:tabular-nums}
  .gs-rounds-lbl{color:var(--violet-100)}
  .gs-leg{display:inline-flex;align-items:center;gap:7px;color:rgba(255,255,255,0.82)}
  .gs-leg i{width:8px;height:8px;border-radius:50%;display:inline-block}
  .gs-leg i.on{background:#fff;box-shadow:0 0 8px rgba(255,255,255,0.85)}
  .gs-leg i.off{background:#c7b4ff;box-shadow:0 0 8px rgba(170,140,255,0.85)}
  .gs-epoch{width:100%;max-width:430px;display:flex;flex-direction:column;gap:7px}
  .gs-epoch-top{display:flex;justify-content:space-between;font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:rgba(255,255,255,0.72);text-shadow:0 1px 10px rgba(20,8,52,0.6)}
  .gs-epoch-top b{color:var(--white);font-weight:400}
  .gs-epoch-bar{position:relative;display:flex;gap:2.5px;height:13px;overflow:hidden;border-radius:4px}
  .gs-seg{position:relative;flex:1;border-radius:2.5px;overflow:hidden;background:rgba(255,255,255,0.12);transition:background 0.45s var(--ease-out)}
  .gs-seg.on{background:linear-gradient(180deg,rgba(255,255,255,0.7),rgba(255,255,255,0.4))}
  .gs-seg.on::before{content:"";position:absolute;inset:0;border-radius:inherit;background:#ffffff;box-shadow:0 0 7px rgba(255,255,255,0.85);opacity:var(--sh,0)}
  .gs-epoch-shim{display:none}
  /* bottom-right telemetry box: supporting stats + epoch */
  .gs-box{
    position:absolute;right:22px;bottom:20px;z-index:4;pointer-events:auto;cursor:pointer;width:210px;padding:11px 13px;
    background:rgba(18,9,44,0.6);border:1px solid rgba(255,255,255,0.14);border-radius:12px;
    -webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);box-shadow:0 14px 38px rgba(16,6,52,0.4);
    opacity:0;transition:opacity 0.6s var(--ease-out),transform 0.18s var(--ease-out),box-shadow 0.18s var(--ease-out),border-color 0.18s var(--ease-out)
  }
  .gs-box.show{opacity:1}
  /* sustained low activity → hide live counters, globe runs on simulated arcs */
  .globe-stats,#gs-box,.gs-livelabel{transition:opacity 0.7s var(--ease-out)}
  /* sustained low activity → counters hidden via inline opacity in JS; globe runs on simulated arcs */
  .globe-desc{max-width:44ch;margin:22px auto 0;font-size:var(--text-lg);line-height:var(--lh-normal);color:rgba(255,255,255,0.85);text-align:center;opacity:0;display:none;transition:opacity 0.7s var(--ease-out)}
  .globe-desc.show{display:block}
  .globe-desc.show.in{opacity:1}
  .gs-box:hover{border-color:rgba(255,255,255,0.42);box-shadow:0 14px 38px rgba(16,6,52,0.4),var(--glow-violet-soft)}
  .gs-explore{margin-top:11px;padding-top:10px;border-top:1px solid rgba(255,255,255,0.12);display:flex;align-items:center;justify-content:space-between;font-family:var(--font-mono);font-size:9.5px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--violet-100);transition:color 0.18s var(--ease-out)}
  .gs-box:hover .gs-explore{color:#fff}
  .gs-box .gs-row{display:flex;flex-direction:column;gap:8px}
  .gs-box .gs-stat{flex-direction:row;align-items:baseline;justify-content:space-between;gap:10px;text-align:left;padding:0;min-width:0}
  .gs-box .gs-stat::before{display:none}
  .gs-box .gs-num{font-size:15px;order:2}
  .gs-box .gs-lbl{order:1;font-size:9.5px}
  .gs-box .gs-sub{display:none}
  .gs-box .gs-epoch{margin-top:11px;gap:5px;max-width:none}
  .gs-box .gs-epoch-top{font-size:9.5px}
  @media (max-width:760px){
    .gs-box{position:static;width:auto;margin:18px auto 0;right:auto;bottom:auto}
  }
  @media (max-width:760px){
    .globe-sec{padding:24px 0}
    .globe-panel{min-height:520px}
    .globe-panel .panel__inner{padding:48px 22px 0}
    .globe-panel h2{font-size:34px}
    .globe-stats{margin-top:22px;gap:14px}
    .gs-hero-num{font-size:24px}
    .gs-num{font-size:21px}
    .gs-stat{min-width:44%;padding:8px 12px}
    .gs-stat + .gs-stat::before{display:none}
    .gs-rounds{font-size:11px}
  }

  /* ============== companies testimonial carousel ============== */
  .companies{padding:96px 0 40px;scroll-margin-top:68px}
  .companies-head{text-align:center;max-width:760px;margin:0 auto 44px}
  .companies-head h2{font-size:var(--text-h2);line-height:var(--lh-snug);letter-spacing:var(--tracking-head);font-weight:400;margin:0}
  .companies-head h2 .hl{color:var(--accent)}
  .companies-head p{font-size:var(--text-lg);color:var(--fg2);margin:16px 0 0}
  .comp-panel{
    background:linear-gradient(160deg,var(--cat-crypto-bg-1) 0%,var(--cat-crypto-bg-2) 100%);
    --invert-bg:#f3f1fa;
    --invert-fg1:#1b1730;
    --invert-fg2:#55506a;
    --invert-fg3:#938da6;
    --invert-border:rgba(20,12,50,0.12);
  }
  .comp-panel .panel__inner{padding:0}
  /* tab rail */
  .comp-tabs{
    display:flex;gap:4px;overflow-x:auto;overflow-y:hidden;scrollbar-width:none;
    border-bottom:1px solid var(--invert-border);padding:0 14px;
  }
  .comp-tabs.fade-left.fade-right{-webkit-mask:linear-gradient(90deg,transparent 0,#000 52px,#000 calc(100% - 52px),transparent 100%);mask:linear-gradient(90deg,transparent 0,#000 52px,#000 calc(100% - 52px),transparent 100%)}
  .comp-tabs.fade-right:not(.fade-left){-webkit-mask:linear-gradient(90deg,#000 calc(100% - 52px),transparent 100%);mask:linear-gradient(90deg,#000 calc(100% - 52px),transparent 100%)}
  .comp-tabs.fade-left:not(.fade-right){-webkit-mask:linear-gradient(90deg,transparent 0,#000 52px);mask:linear-gradient(90deg,transparent 0,#000 52px)}
  .comp-tabs::-webkit-scrollbar{display:none}
  .comp-tab{
    flex:none;display:flex;align-items:center;gap:10px;position:relative;
    padding:20px 18px;background:transparent;border:0;cursor:pointer;
    color:var(--invert-fg3);font-family:var(--font-sans);font-size:15px;white-space:nowrap;
    border-bottom:2px solid transparent;margin-bottom:-1px;
    transition:color var(--dur) var(--ease-out);
  }
  .comp-tab:hover{color:var(--invert-fg2)}
  .comp-tab.active{color:var(--invert-fg1)}
  .comp-tab.active::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;border-radius:2px;background:var(--accent);transform-origin:left}
  .comp-tabs.playing .comp-tab.active::after{animation:compProg 8s linear forwards}
  @keyframes compProg{from{transform:scaleX(0)}to{transform:scaleX(1)}}
  @media (prefers-reduced-motion: reduce){.comp-tabs.playing .comp-tab.active::after{animation:none}}
  .comp-logo{
    flex:none;width:26px;height:26px;border-radius:7px;display:grid;place-items:center;
    background:rgba(20,12,50,0.05);color:var(--invert-fg2);
    font-size:13px;font-weight:600;letter-spacing:-0.02em;
    transition:background var(--dur) var(--ease-out),color var(--dur) var(--ease-out);
  }
  .comp-tab.active .comp-logo{background:var(--accent);color:var(--white)}
  .comp-tab.active .comp-logo.has-img{background:transparent}
  .comp-logo img{width:100%;height:100%;object-fit:contain}
  .comp-logo.has-img{background:transparent;overflow:hidden}
  .comp-logo.app img{padding:5px}
  .comp-tab.active .comp-logo.app{box-shadow:0 0 0 2px var(--invert-bg),0 0 0 3px var(--accent)}
  /* body */
  .comp-body{padding:26px 36px 40px;position:relative}
  .comp-playpause{
    width:40px;height:40px;border-radius:var(--radius-pill);
    border:1px solid var(--invert-border);background:transparent;color:var(--invert-fg2);
    display:grid;place-items:center;cursor:pointer;margin-bottom:24px;
    transition:border-color var(--dur) var(--ease-out),color var(--dur) var(--ease-out);
  }
  .comp-playpause:hover{border-color:var(--accent);color:var(--invert-fg1)}
  .comp-playpause svg{width:16px;height:16px}
  .comp-quote-row{display:flex;gap:48px;align-items:flex-start;min-height:236px}
  .comp-quote{flex:1;min-width:0}
  .comp-quote blockquote{
    margin:0;font-size:26px;line-height:1.4;font-weight:400;color:var(--invert-fg1);
    letter-spacing:-0.01em;text-wrap:pretty;
  }
  .comp-quote .cite{margin-top:26px;font-size:15px;color:var(--invert-fg2)}
  .comp-quote .cite b{color:var(--invert-fg1);font-weight:500}
  .comp-bigmark{
    flex:none;width:200px;height:200px;border-radius:var(--radius-lg);
    display:grid;place-items:center;background:rgba(20,12,50,0.035);
    border:1px solid var(--invert-border);
    font-size:84px;font-weight:600;color:var(--invert-fg1);letter-spacing:-0.03em;
  }
  .comp-bigmark.has-img{background:transparent}
  .comp-bigmark img{width:64%;height:64%;object-fit:contain}
  .comp-bigmark.app{border:0;border-radius:44px}
  .comp-bigmark.app img{width:56%;height:56%}
  .comp-fade{animation:compFade var(--dur-slow) var(--ease-out)}
  @keyframes compFade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
  .comp-word{display:inline-block;opacity:0;transform:translateY(9px);color:var(--violet-300);animation:wordIn .6s var(--ease-out) forwards}
  @keyframes wordIn{
    0%{opacity:0;transform:translateY(10px);color:var(--violet-300)}
    45%{opacity:1;transform:translateY(0);color:var(--violet-200)}
    100%{opacity:1;transform:translateY(0);color:var(--invert-fg1)}
  }
  @media (prefers-reduced-motion: reduce){
    .comp-word{opacity:1;transform:none;animation:none;color:var(--invert-fg1)}
    .comp-fade{animation:none}
  }
  @media (max-width:760px){
    .companies{padding:64px 0 24px}
    .comp-body{padding:22px 22px 32px}
    .comp-quote-row{flex-direction:column-reverse;align-items:flex-start;gap:28px}
    .comp-quote blockquote{font-size:21px}
    .comp-bigmark{width:104px;height:104px;font-size:44px;border-radius:var(--radius-md)}
  }

  /* ============== blackthorn section ============== */
  .blackthorn{padding:40px 0;scroll-margin-top:68px}
  .bt-panel{background:var(--cat-ai-bg);min-height:calc(100vh - 116px);position:relative;overflow:hidden}
  /* encryption-wave video on the right, masked into the panel; fades in on first visit */
  .bt-video{position:absolute;top:0;right:0;height:100%;width:60%;object-fit:cover;z-index:0;pointer-events:none;
    opacity:0;transition:opacity 9s var(--ease-out) 0.6s;
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 44%);mask-image:linear-gradient(90deg,transparent 0,#000 44%)}
  .bt-panel.video-in .bt-video{opacity:1}
  @media (max-width:820px){
    .bt-video{width:100%;
      -webkit-mask-image:linear-gradient(0deg,#000 0,#000 42%,transparent 92%);
              mask-image:linear-gradient(0deg,#000 0,#000 42%,transparent 92%)}
    .bt-panel::after{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;background:rgba(10,10,12,0.5)}
  }
  .bt-inner{position:relative;z-index:1;max-width:680px;padding:80px 56px;display:flex;flex-direction:column;align-items:flex-start}
  .bt-label{display:inline-block;color:var(--violet-300);margin-bottom:22px}
  .bt-h2{font-size:var(--text-h1);line-height:var(--lh-tight);letter-spacing:var(--tracking-display);font-weight:400;margin:0;color:var(--invert-fg1);max-width:15ch}
  .bt-desc{font-size:var(--text-lg);line-height:var(--lh-normal);color:var(--invert-fg2);margin:24px 0 0;max-width:52ch}
  .bt-desc .bt-name{color:var(--invert-fg1)}
  .bt-cta{display:flex;gap:12px;margin-top:36px;flex-wrap:wrap}
  .bt-cta .btn-pri{background:var(--accent);color:var(--white)}
  .bt-cta .btn-pri:hover{background:var(--primary-hover)}
  @media (max-width:760px){
    .bt-inner{padding:56px 24px}
    .bt-h2{font-size:34px}
    .bt-desc{font-size:16px}
  }
  .bt-panel canvas{display:block}

  /* ============== reusable horizontal carousel ============== */
  .hcar{position:relative}
  .hcar-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
  .hcar-nav{display:flex;gap:8px;flex:none}
  .hcar-btn{
    width:42px;height:42px;border-radius:var(--radius-pill);border:1px solid var(--border);
    background:transparent;color:var(--fg1);display:grid;place-items:center;cursor:pointer;
    transition:background var(--dur) var(--ease-out),border-color var(--dur) var(--ease-out),color var(--dur) var(--ease-out),transform var(--dur-fast) var(--ease-out),opacity var(--dur) var(--ease-out);
  }
  .hcar-btn:hover{border-color:var(--accent);color:var(--accent)}
  .hcar-btn:active{transform:scale(0.94)}
  .hcar-btn[disabled]{opacity:0.35;pointer-events:none}
  .hcar-btn .arr{font-family:var(--font-mono);font-style:normal;font-size:20px;line-height:1}
  .hcar-track{
    display:flex;gap:20px;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;
    scrollbar-width:none;scroll-behavior:smooth;padding:4px 0 8px;overscroll-behavior-y:auto;touch-action:pan-x;
  }
  .hcar-track::-webkit-scrollbar{display:none}
  .hcar-item{flex:0 0 auto;scroll-snap-align:start;cursor:pointer;
    transition:transform var(--dur-fast) var(--ease-out)}
  .hcar-item:active{transform:scale(0.96)}

  /* ============== research section ============== */
  .research{padding:96px 0 8px}
  .research .ds-label{display:inline-block;color:var(--accent);margin-bottom:18px}
  .research h2{font-size:var(--text-h2);line-height:var(--lh-snug);letter-spacing:var(--tracking-head);font-weight:400;margin:0 auto;max-width:18ch}
  .research .lead{font-size:var(--text-lg);color:var(--fg2);margin:14px auto 0;max-width:52ch}
  .research .hcar-head{flex-direction:column;align-items:center;text-align:center;gap:0}
  .research .hcar-nav{margin-top:26px}
  .paper{
    width:286px;height:410px;display:flex;flex-direction:column;background:var(--bg);cursor:pointer;
    border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
    transition:border-color var(--dur) var(--ease-out);
  }
  .paper:hover{border-color:var(--accent)}
  /* research overview grid (/research): reuse the card, fluid width */
  .paper-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px;margin-top:8px}
  .paper-grid .paper{width:100%}
  /* research paper detail (/research/<slug>) */
  .paper-detail{max-width:680px;margin:0 auto;text-align:center;display:flex;flex-direction:column;align-items:center;gap:22px}
  .paper-detail .lead{font-size:var(--text-lg);color:var(--fg2);line-height:var(--lh-normal);margin:0;max-width:62ch}
  .paper-detail .pd-meta{display:flex;flex-wrap:wrap;justify-content:center;gap:40px}
  .paper-detail .pd-item{display:flex;flex-direction:column;gap:7px}
  .paper-detail .pd-item .ds-label{color:var(--accent)}
  .paper-detail .pd-item p{margin:0;color:var(--fg1);font-size:var(--text-body)}
  /* research detail hero: a big paper-card cover (serif title + cover bg) */
  .paper-hero{position:relative;overflow:hidden;background:linear-gradient(165deg,var(--violet-500),var(--violet-600))}
  .paper-hero .dots{position:absolute;inset:0;z-index:0}
  .paper-hero-art{position:absolute;right:-6%;bottom:-24%;width:46%;height:auto;z-index:0;
    filter:brightness(0) invert(1);opacity:.5;pointer-events:none}
  .paper-hero-inner{position:relative;z-index:2;padding:92px 32px 100px;max-width:880px;margin:0 auto;
    display:flex;flex-direction:column;align-items:center;text-align:center}
  .paper-hero .ds-label{display:inline-block;color:rgba(255,255,255,0.82);margin-bottom:22px}
  .paper-hero-name{font-family:"Computer Modern Serif",Georgia,"Times New Roman",serif;font-variant:small-caps;
    font-weight:400;font-size:64px;line-height:1.02;letter-spacing:0.04em;color:#fff;margin:0;text-wrap:balance;
    text-shadow:0 0 18px var(--violet-600),0 0 36px var(--violet-600),0 1px 12px rgba(0,0,0,0.35)}
  .paper-hero-title{font-family:"Computer Modern Serif",Georgia,"Times New Roman",serif;font-weight:400;
    font-size:22px;line-height:1.35;color:rgba(255,255,255,0.9);margin:18px 0 0;max-width:40ch;text-wrap:balance;
    text-shadow:0 0 11px var(--violet-600),0 1px 9px rgba(0,0,0,0.3)}
  .paper-hero-cta{display:flex;gap:12px;margin-top:40px;flex-wrap:wrap;justify-content:center}
  .paper-hero .btn-pri{background:#fff;color:var(--accent)}
  .paper-hero .btn-pri:hover{background:var(--violet-50)}
  .paper-hero--ai{background:var(--cat-ai-bg)}
  .paper-hero--ai .paper-hero-name,.paper-hero--ai .paper-hero-title{
    text-shadow:0 0 16px var(--cat-ai-bg),0 0 32px var(--cat-ai-bg),0 1px 10px rgba(0,0,0,0.6)}
  .paper-hero--ai .btn-pri{background:var(--accent);color:#fff}
  .paper-hero--ai .btn-pri:hover{background:var(--primary-hover)}
  @media (max-width:760px){
    .paper-hero-inner{padding:64px 22px 72px}
    .paper-hero-name{font-size:44px}
    .paper-hero-title{font-size:18px}
  }
  /* cover fills the space left over by the body, so cards share one height */
  .paper-cover{position:relative;width:100%;flex:1;min-height:0;overflow:hidden;
    background:linear-gradient(165deg,var(--violet-500),var(--violet-600))}
  .paper-cover .dots{position:absolute;inset:0;z-index:0}
  /* cerberus engraving, white — stands at the bottom, bleeding ~1/4 off the left edge */
  .paper-art{position:absolute;bottom:-24%;top:auto;left:0;width:138%;height:auto;
    transform:translateX(-34%);filter:brightness(0) invert(1);opacity:.92;pointer-events:none}
  /* short title, set like a paper codename, sitting in the cover image */
  .paper-name{position:absolute;left:16px;right:16px;bottom:14px;z-index:3;text-align:right;pointer-events:none;
    font-family:"Computer Modern Serif",Georgia,"Times New Roman",serif;font-variant:small-caps;
    font-weight:400;font-size:26px;line-height:1.04;letter-spacing:0.045em;color:#fff;
    text-shadow:0 0 13px var(--violet-600),0 0 26px var(--violet-600),0 1px 10px rgba(0,0,0,0.4)}
  /* title-only papers: codename line (bigger) above the rest, centered in the cover */
  .paper-cover--ai{background:var(--cat-ai-bg)}
  .paper-stack{position:absolute;inset:0;z-index:3;display:flex;flex-direction:column;align-items:center;justify-content:center;
    text-align:center;padding:24px 20px;gap:11px;text-wrap:balance;pointer-events:none}
  .ps-name{font-family:"Computer Modern Serif",Georgia,"Times New Roman",serif;font-variant:small-caps;
    font-weight:400;font-size:26px;line-height:1.04;letter-spacing:0.045em;color:#fff;
    text-shadow:0 0 13px var(--violet-600),0 0 26px var(--violet-600),0 1px 10px rgba(0,0,0,0.35)}
  .ps-rest{font-family:"Computer Modern Serif",Georgia,"Times New Roman",serif;font-weight:400;
    font-size:15.5px;line-height:1.32;color:rgba(255,255,255,0.9);
    text-shadow:0 0 11px var(--violet-600),0 0 22px var(--violet-600),0 1px 9px rgba(0,0,0,0.32)}
  .paper-cover--ai .ps-name,.paper-cover--ai .paper-name{text-shadow:0 0 13px var(--cat-ai-bg),0 0 28px var(--cat-ai-bg),0 1px 10px rgba(0,0,0,0.6)}
  .paper-cover--ai .ps-rest{text-shadow:0 0 12px var(--cat-ai-bg),0 0 26px var(--cat-ai-bg),0 1px 9px rgba(0,0,0,0.55)}
  /* large white brand logo cover (whitepaper) — oversized, bleeding off the left */
  .paper-logo{position:absolute;inset:0;z-index:2;overflow:hidden;pointer-events:none}
  .paper-logo img{position:absolute;top:50%;left:0;width:128%;max-width:none;height:auto;
    transform:translate(-36%,-70%);filter:none}
  /* user-fillable covers sit over the violet/dot field */
  .paper-cover image-slot{position:absolute;inset:0;width:100%;height:100%}
  .paper-cover image-slot::part(frame){background:transparent}
  .paper-cover image-slot::part(empty){color:rgba(255,255,255,0.92)}
  .paper-cover image-slot::part(ring){border-color:rgba(255,255,255,0.42)}
  /* caption below the cover — rest of the title (image cards) + date · category */
  .paper-body{flex:none;padding:15px 16px 17px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:11px}
  .paper-rest{margin:0;font-family:"Computer Modern Serif",Georgia,"Times New Roman",serif;font-weight:400;
    font-size:15px;line-height:1.32;color:var(--fg1);text-align:center;text-wrap:balance}
  .paper-authors{margin:0;font-family:var(--font-sans);font-size:11.5px;line-height:1.4;color:var(--fg3);text-align:center;text-wrap:balance;max-width:32ch}
  .paper-meta{font-family:var(--font-sans);font-size:12.5px;letter-spacing:0;color:var(--fg3);
    display:flex;gap:8px;justify-content:center}
  @media (max-width:760px){
    .research{padding:64px 0 4px}
    .research h2{font-size:34px}
    .hcar-head{margin-bottom:20px}
  }

  /* ============== $ARX token ============== */
  .token{padding:40px 0;scroll-margin-top:68px}
  .token-panel .panel__inner{padding:72px 48px 64px;max-width:1100px;margin:0 auto}
  .token-head{max-width:760px;margin:0 auto;text-align:center}
  .token .ds-label{display:inline-block;color:var(--violet-100);margin-bottom:18px}
  .token-head h2{font-size:var(--text-h2);line-height:var(--lh-snug);letter-spacing:var(--tracking-head);font-weight:400;margin:0 auto;max-width:20ch;color:var(--white)}
  .token-head h2 .hl{color:var(--white);text-decoration-color:rgba(255,255,255,0.45)}
  .token-head .lead{font-size:var(--text-lg);color:rgba(255,255,255,0.85);line-height:var(--lh-normal);margin:20px auto 0;max-width:62ch}
  .token-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:48px;text-align:left}
  .token-box{
    position:relative;display:flex;flex-direction:column;align-items:flex-start;
    padding:22px 22px 24px;border-radius:18px;
    border:1.5px dashed rgba(255,255,255,0.30);background:rgba(255,255,255,0.05);
    -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
    box-shadow:0 18px 44px rgba(16,6,52,0.34);
  }
  .token-box-label{display:flex;align-items:baseline;gap:9px;font-family:var(--font-mono);font-size:11px;
    letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--violet-100);
    margin-bottom:16px;padding-bottom:12px;width:100%;border-bottom:1px dashed rgba(255,255,255,0.2)}
  .tb-idx{color:rgba(255,255,255,0.5);font-variant-numeric:tabular-nums}
  .token-box p{margin:0;font-size:14px;line-height:1.55;color:rgba(255,255,255,0.82);text-wrap:pretty}
  @media (max-width:860px){
    .token-panel .panel__inner{padding:56px 28px 48px}
    .token-grid{grid-template-columns:1fr 1fr}
  }
  @media (max-width:560px){
    .token{padding:24px 0}
    .token-panel .panel__inner{padding:48px 22px 36px}
    .token-grid{grid-template-columns:1fr}
  }

  /* ============== CTA panel ============== */
  .cta{padding:40px 0 96px;scroll-margin-top:68px}
  .cta-panel .panel__inner{padding:72px 32px 0;max-width:780px;margin:0 auto;
    display:flex;flex-direction:column;align-items:center;text-align:center}
  /* fuller halftone dot field for the CTA */
  .cta-panel .panel__dots{
    background-image:radial-gradient(rgba(255,255,255,0.55) 1.3px,transparent 1.4px);
    background-size:18px 18px;opacity:.14;
    -webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 38%,#000 0%,transparent 78%);
            mask-image:radial-gradient(ellipse 90% 80% at 50% 38%,#000 0%,transparent 78%);
  }
  /* line grid that fades to the edges */
  .cta-grid{
    position:absolute;inset:0;z-index:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,0.16) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,0.16) 1px,transparent 1px);
    background-size:48px 48px;
    -webkit-mask-image:radial-gradient(ellipse 78% 78% at 50% 42%,#000 0%,transparent 76%);
            mask-image:radial-gradient(ellipse 78% 78% at 50% 42%,#000 0%,transparent 76%);
  }
  /* independent mouse-following focus: same line grid, brighter, revealed only
     inside a soft circle around the cursor — has NO edge-falloff mask of its own */
  .cta-spot{
    position:absolute;inset:0;z-index:0;pointer-events:none;opacity:0;
    transition:opacity 0.5s var(--ease-out);
    background-image:
      linear-gradient(rgba(255,255,255,0.2) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,0.2) 1px,transparent 1px);
    background-size:48px 48px;
    -webkit-mask-image:radial-gradient(circle 200px at var(--mx,50%) var(--my,42%),#000 0%,transparent 72%);
            mask-image:radial-gradient(circle 200px at var(--mx,50%) var(--my,42%),#000 0%,transparent 72%);
  }
  .cta-panel:hover .cta-spot,.token-panel:hover .cta-spot{opacity:1}
  .cta h2{
    font-size:var(--text-h1);line-height:var(--lh-tight);letter-spacing:var(--tracking-display);
    font-weight:400;margin:0;color:var(--white);max-width:16ch;
  }
  .cta .sub{font-size:var(--text-lg);line-height:var(--lh-normal);color:rgba(255,255,255,0.85);margin:24px auto 0;max-width:50ch}
  .cta-actions{display:flex;gap:12px;margin:38px 0 116px;flex-wrap:wrap;justify-content:center}
  /* three action cards */
  .cta-cats{
    display:grid;grid-template-columns:1fr 1fr;gap:16px;
    width:100%;margin:40px 0 72px;text-align:left;
  }
  .cta-cats > .cta-catbox:first-child{grid-column:1 / -1}
  .cta-catbox{
    position:relative;display:flex;flex-direction:column;align-items:flex-start;
    padding:22px 22px 24px;border-radius:18px;
    border:1.5px dashed rgba(255,255,255,0.30);background:rgba(255,255,255,0.05);
    -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
    box-shadow:0 18px 44px rgba(16,6,52,0.34);
  }
  .cta-cat-label{font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--violet-100);margin-bottom:16px;padding-bottom:12px;width:100%;border-bottom:1px dashed rgba(255,255,255,0.2)}
  .cta-catbox h3{margin:0;font-size:19px;font-weight:500;color:var(--invert-fg1);letter-spacing:-0.01em}
  .cta-catbox p{margin:7px 0 18px;font-size:14px;line-height:1.5;color:rgba(255,255,255,0.82)}
  .cta-catbox .cta-btns{margin-top:auto;display:flex;flex-wrap:wrap;gap:10px}
  .cta-catbox .bt-name{color:#fff}
  /* category-colored build boxes */
  .cta-catbox--crypto{grid-column:auto;border:0;background:linear-gradient(160deg,var(--cat-crypto-bg-1) 0%,var(--cat-crypto-bg-2) 100%)}
  .cta-catbox--crypto .cta-cat-label{color:var(--accent);border-bottom-color:rgba(20,12,50,0.12)}
  .cta-catbox--crypto h3{color:var(--fg1)}
  .cta-catbox--crypto p{color:var(--fg2)}
  .cta-cats .cta-catbox--crypto .btn-glass{background:rgba(20,12,50,0.05);color:var(--fg1);border:1px solid var(--border)}
  .cta-cats .cta-catbox--crypto .btn-glass:hover{background:var(--accent);color:var(--white);border-color:var(--accent)}
  .cta-catbox--ai{border:0;background:var(--cat-ai-bg)}
  .cta-catbox--ai .cta-cat-label{color:var(--violet-300);border-bottom-color:rgba(255,255,255,0.16)}
  /* contact button on the black Blackthorn box uses the true primary violet */
  .cta-catbox--ai .btn-pri{background:var(--accent);color:var(--white)}
  .cta-catbox--ai .btn-pri:hover{background:var(--primary-hover)}
  .cta-cards{
    display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
    width:100%;margin:44px 0 116px;text-align:left;
  }
  .cta-card{
    position:relative;display:flex;flex-direction:column;align-items:flex-start;
    padding:26px 24px 24px;border-radius:18px;
    border:1px solid var(--invert-border);
    background:var(--invert-bg);
    box-shadow:0 18px 40px rgba(20,8,54,0.34);
  }
  .cta-card-ico{
    width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
    background:var(--accent-soft);color:var(--violet-200);margin-bottom:18px;
    border:1px solid rgba(255,255,255,0.08);
  }
  .cta-card-ico svg{width:22px;height:22px}
  .cta-card h3{margin:0;font-size:20px;font-weight:500;color:var(--invert-fg1);letter-spacing:-0.01em}
  .cta-card p{margin:8px 0 22px;font-size:14px;line-height:1.5;color:var(--invert-fg2)}
  .cta-card .btn{margin-top:auto}
  .cta-card .btn-glass,.cta-catbox .btn-glass{
    background:rgba(255,255,255,0.06);color:var(--invert-fg1);border:1px solid var(--invert-border);
  }
  .cta-card .btn-glass:hover,.cta-catbox .btn-glass:hover{background:rgba(255,255,255,0.16);border-color:rgba(255,255,255,0.32)}
  /* floating icon tiles */
  .cta-tiles{position:absolute;inset:0;z-index:0;pointer-events:none}
  .cta-tile{
    position:absolute;width:64px;height:64px;border-radius:18px;
    display:grid;place-items:center;color:#fff;
    border:1px solid rgba(255,255,255,0.28);
    background:rgba(255,255,255,0.10);
    -webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);
    box-shadow:
      inset 0 1.5px 1px rgba(255,255,255,0.55),
      inset 1px 0 1px rgba(255,255,255,0.22),
      inset 0 -10px 22px rgba(255,255,255,0.12),
      inset 0 0 16px rgba(255,255,255,0.10),
      0 10px 26px rgba(40,20,90,0.22);
    will-change:transform;
  }
  .cta-tile.dashed{border-style:dashed}
  .cta-tile svg{width:26px;height:26px;opacity:0.6;filter:drop-shadow(0 1px 2px rgba(0,0,0,0.18))}
  /* each tile gets its own drift path + speed + phase so none feel synced */
  .cta-tile:nth-child(1){animation:drift1 17s ease-in-out -3s infinite}
  .cta-tile:nth-child(2){animation:drift2 21s ease-in-out -9s infinite}
  .cta-tile:nth-child(3){animation:drift3 15s ease-in-out -6s infinite}
  .cta-tile:nth-child(4){animation:drift4 23s ease-in-out -13s infinite}
  .cta-tile:nth-child(5){animation:drift5 19s ease-in-out -2s infinite}
  .cta-tile:nth-child(6){animation:drift6 25s ease-in-out -17s infinite}
  @keyframes drift1{
    0%{transform:translate(0,0) rotate(var(--rot))}
    33%{transform:translate(9px,-15px) rotate(calc(var(--rot) + 3deg))}
    66%{transform:translate(-6px,-7px) rotate(calc(var(--rot) - 2deg))}
    100%{transform:translate(0,0) rotate(var(--rot))}
  }
  @keyframes drift2{
    0%{transform:translate(0,0) rotate(var(--rot))}
    30%{transform:translate(-11px,-9px) rotate(calc(var(--rot) - 3.5deg))}
    62%{transform:translate(5px,-17px) rotate(calc(var(--rot) + 2.5deg))}
    100%{transform:translate(0,0) rotate(var(--rot))}
  }
  @keyframes drift3{
    0%{transform:translate(0,0) rotate(var(--rot))}
    28%{transform:translate(7px,-8px) rotate(calc(var(--rot) - 2.5deg))}
    55%{transform:translate(12px,-19px) rotate(calc(var(--rot) + 3.5deg))}
    80%{transform:translate(-4px,-12px) rotate(calc(var(--rot) - 1deg))}
    100%{transform:translate(0,0) rotate(var(--rot))}
  }
  @keyframes drift4{
    0%{transform:translate(0,0) rotate(var(--rot))}
    40%{transform:translate(-9px,-16px) rotate(calc(var(--rot) + 2deg))}
    72%{transform:translate(8px,-6px) rotate(calc(var(--rot) - 3deg))}
    100%{transform:translate(0,0) rotate(var(--rot))}
  }
  @keyframes drift5{
    0%{transform:translate(0,0) rotate(var(--rot))}
    25%{transform:translate(-7px,-13px) rotate(calc(var(--rot) + 3deg))}
    50%{transform:translate(6px,-20px) rotate(calc(var(--rot) - 1.5deg))}
    78%{transform:translate(10px,-9px) rotate(calc(var(--rot) + 2deg))}
    100%{transform:translate(0,0) rotate(var(--rot))}
  }
  @keyframes drift6{
    0%{transform:translate(0,0) rotate(var(--rot))}
    35%{transform:translate(10px,-10px) rotate(calc(var(--rot) - 2.8deg))}
    68%{transform:translate(-8px,-18px) rotate(calc(var(--rot) + 3.2deg))}
    100%{transform:translate(0,0) rotate(var(--rot))}
  }
  @media (prefers-reduced-motion: reduce){.cta-tile{animation:none}}
  /* bottom feature strip */
  .cta-strip{
    position:relative;z-index:1;border-top:1px solid rgba(255,255,255,0.18);
    background:var(--accent);
    overflow:hidden;
    -webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
            mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
  }
  .cta-strip-track{display:flex;width:max-content;animation:scroll 38s linear infinite}
  .cta-feat{
    flex:none;display:flex;align-items:center;gap:11px;padding:22px 40px;
    color:rgba(255,255,255,0.9);font-size:15px;white-space:nowrap;
  }
  .cta-feat svg{width:18px;height:18px;flex:none;color:rgba(255,255,255,0.7)}
  @media (max-width:760px){
    .cta{padding:24px 0 64px}
    .cta-panel .panel__inner{padding:72px 22px 0}
    .cta h2{font-size:38px}
    .cta-actions{margin-bottom:80px}
    .cta-cards{grid-template-columns:1fr;gap:12px;margin-bottom:80px}
    .cta-cats{grid-template-columns:1fr;gap:12px;margin-bottom:80px}
    .cta-tile{width:50px;height:50px}
    .cta-tile svg{width:21px;height:21px}
  }

  /* ============== footer ============== */
  .footer{background:var(--invert-bg);color:var(--invert-fg2);position:relative;overflow:hidden}
  .footer-dots{
    position:absolute;inset:0;z-index:0;
    background-image:radial-gradient(var(--violet-400) 1.4px,transparent 1.5px);
    background-size:22px 22px;opacity:.10;
    -webkit-mask-image:radial-gradient(ellipse 50% 90% at 92% 0%,#000 0%,transparent 70%);
            mask-image:radial-gradient(ellipse 50% 90% at 92% 0%,#000 0%,transparent 70%);
  }
  .footer-inner{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:80px 32px 0}
  .footer-top{
    display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;
    padding-bottom:56px;
  }
  .footer-brand .lock{display:flex;align-items:center;gap:10px;margin-bottom:20px}
  .footer-brand .logomark{height:24px;width:auto;display:block}
  .footer-brand .wordmark{height:17px;width:auto;display:block}
  .footer-brand .wordmark path,.footer-brand .wordmark rect{fill:var(--invert-fg1)}
  .footer-brand p{margin:0;font-size:14px;line-height:1.6;color:var(--invert-fg3);max-width:30ch}
  .footer-col h4{
    margin:0 0 18px;font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);
    text-transform:uppercase;color:var(--invert-fg3);font-weight:400;
  }
  .footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:13px}
  .footer-cat{font-family:var(--font-mono);font-size:10px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--violet-300);margin:0 0 12px}
  .footer-col ul + .footer-cat{margin-top:24px}
  .footer-col a{font-size:15px;color:var(--invert-fg2);transition:color var(--dur) var(--ease-out)}
  .footer-col a:hover{color:var(--invert-fg1)}
  .socials{display:flex;gap:8px;margin-top:20px;flex-wrap:wrap}
  .socials a{
    width:36px;height:36px;border:1px solid var(--invert-border);border-radius:var(--radius-md);
    display:grid;place-items:center;color:var(--invert-fg2);
    transition:color var(--dur) var(--ease-out),border-color var(--dur) var(--ease-out),background var(--dur) var(--ease-out);
  }
  .socials a:hover{color:var(--invert-fg1);border-color:var(--accent);background:var(--accent-soft)}
  .socials svg{width:18px;height:18px;fill:currentColor;display:block}
  .footer-bottom{
    position:relative;z-index:1;border-top:1px solid var(--invert-border);
    max-width:1200px;margin:0 auto;padding:24px 32px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  }
  .footer-bottom .copy{font-size:13px;color:var(--invert-fg3)}
  .footer-bottom .tag{font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--accent)}
  .footer-wordmark{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:8px 32px 28px}
  .footer-wordmark svg{width:100%;height:auto;display:block}
  .footer-wordmark svg path,.footer-wordmark svg rect{fill:rgba(255,255,255,0.07)}
  @media (max-width:900px){
    .footer-top{grid-template-columns:1fr 1fr;gap:40px 24px;padding-bottom:44px}
    .footer-brand{grid-column:1 / -1}
    .footer-inner{padding-top:56px}
  }
  @media (max-width:560px){
    .footer-top{grid-template-columns:1fr 1fr}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }

  /* ============== Tweaks panel (diagram) ============== */
  .tw-panel{position:fixed; right:20px; bottom:20px; z-index:9999; width:248px;
    background:var(--invert-bg); color:var(--invert-fg1); border:1px solid var(--invert-border);
    border-radius:var(--radius-lg); box-shadow:0 18px 50px rgba(16,6,52,0.5); overflow:hidden;
    font-family:var(--font-sans)}
  .tw-head{display:flex; align-items:center; justify-content:space-between; padding:13px 15px;
    border-bottom:1px solid var(--invert-border); font-family:var(--font-mono); font-size:11px;
    letter-spacing:var(--tracking-mono); text-transform:uppercase; color:var(--violet-300)}
  .tw-x{background:none; border:0; color:var(--ink-300); cursor:pointer; font-size:13px; line-height:1; padding:2px}
  .tw-x:hover{color:#fff}
  .tw-body{padding:13px 15px 16px; display:flex; flex-direction:column; gap:14px}
  .tw-field{display:flex; flex-direction:column; gap:7px}
  .tw-lbl{font-family:var(--font-mono); font-size:9px; letter-spacing:var(--tracking-mono); text-transform:uppercase; color:var(--ink-300)}
  .tw-seg{display:flex; gap:5px}
  .tw-seg button{flex:1; padding:7px 4px; font-family:var(--font-sans); font-size:12px; cursor:pointer;
    background:var(--invert-bg-card); color:var(--invert-fg2); border:1px solid var(--invert-border);
    border-radius:var(--radius-sm); transition:background var(--dur) var(--ease-out), color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out)}
  .tw-seg button:hover{color:#fff; border-color:rgba(138,99,255,0.5)}
  .tw-seg button.on{background:var(--accent); color:#fff; border-color:var(--accent)}

  /* ====================================================================
     SHARED PAGE COMPONENTS — reused across interior pages (/build, /blockchain)
     ==================================================================== */

  /* --- boxed section panels: role-colored, content-width, NEVER full-bleed ---
     Full-width background colour is reserved for the footer only. Section
     backgrounds are either white (plain .sec) or a role-coloured rounded BOX
     (the shared .panel component) constrained to content width:
       network  -> .panel--accent  (violet)
       crypto   -> .panel--crypto  (gray)
       AI       -> .panel--invert  (black) */
  .panel--crypto{background:linear-gradient(160deg,var(--cat-crypto-bg-1) 0%,var(--cat-crypto-bg-2) 100%);color:var(--fg1)}
  .sec-box .panel__inner{padding:72px 56px}
  @media (max-width:760px){.sec-box .panel__inner{padding:48px 26px}}

  /* --- generic section header (centered, like every section) --- */
  .sec{padding:96px 0;scroll-margin-top:68px}
  /* "Request compute" contact form */
  .contact-form{max-width:560px;margin:44px auto 0;display:flex;flex-direction:column;gap:16px;text-align:left}
  .contact-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .contact-field{display:flex;flex-direction:column;gap:7px}
  .contact-field label{font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--fg3)}
  .contact-field input,.contact-field select,.contact-field textarea{
    width:100%;font-family:var(--font-sans);font-size:15px;color:var(--fg1);background:var(--bg);
    border:1px solid var(--border);border-radius:var(--radius-md);padding:12px 14px;
    transition:border-color var(--dur) var(--ease-out)}
  .contact-field textarea{min-height:118px;resize:vertical}
  .contact-field input:focus,.contact-field select:focus,.contact-field textarea:focus{outline:none;border-color:var(--accent)}
  .contact-form .btn{align-self:flex-start;margin-top:4px}
  .contact-status{font-size:14px;color:var(--fg2);margin:2px 0 0}
  @media (max-width:560px){.contact-row{grid-template-columns:1fr}}
  /* contact form inside the black AI box: dark inputs, light text */
  .panel--invert .contact-field label{color:var(--invert-fg3)}
  .panel--invert .contact-field input,
  .panel--invert .contact-field select,
  .panel--invert .contact-field textarea{
    background:var(--anthracite);border-color:var(--invert-border);color:var(--invert-fg1)}
  .panel--invert .contact-field input::placeholder,
  .panel--invert .contact-field textarea::placeholder{color:var(--invert-fg3)}
  .panel--invert .contact-field input:focus,
  .panel--invert .contact-field select:focus,
  .panel--invert .contact-field textarea:focus{border-color:var(--violet-300)}
  .panel--invert .contact-status{color:var(--invert-fg2)}
  /* custom select: pointer cursor + Dot Matrix › chevron (rotated down) instead of the native arrow */
  .select-wrap{position:relative}
  .select-wrap select{appearance:none;-webkit-appearance:none;cursor:pointer;padding-right:38px}
  .select-wrap::after{content:"\203A";font-family:var(--font-mono);font-size:18px;line-height:1;
    position:absolute;right:14px;top:50%;transform:translateY(-50%) rotate(90deg);transform-origin:center;
    pointer-events:none;color:var(--fg3)}
  .panel--invert .select-wrap::after{color:var(--invert-fg3)}
  /* index hub category box followed by another: trim bottom so the box-to-box
     gap matches the hero-to-box and box-to-CTA gaps (top padding kept for scroll) */
  .sec.nav-cat-tight{padding-bottom:40px}
  .sec-sm{padding:64px 0}
  .sec-head{max-width:760px;margin:0 auto;text-align:center}
  .sec-head .ds-label{display:inline-block;color:var(--accent);margin-bottom:18px}
  .sec-head h2{font-size:var(--text-h1);line-height:var(--lh-tight);letter-spacing:var(--tracking-display);font-weight:400;margin:0 auto;max-width:20ch;color:var(--fg1)}
  .sec-head h2 .hl{color:var(--accent)}
  .sec-head .lead{font-size:var(--text-lg);line-height:var(--lh-normal);color:var(--fg2);margin:22px auto 0;max-width:60ch}

  /* --- page hero: shorter violet panel reusing the line-grid + spotlight --- */
  .phero{padding:24px 0 40px}
  .phero-panel .panel__inner{padding:104px 32px 110px;max-width:860px;margin:0 auto;
    display:flex;flex-direction:column;align-items:center;text-align:center}
  .phero .ds-label{display:inline-block;color:var(--violet-100);margin-bottom:22px}
  .phero h1{font-size:var(--text-display);line-height:var(--lh-tight);letter-spacing:var(--tracking-display);
    font-weight:400;margin:0;max-width:16ch;color:var(--white)}
  .phero h1 .hl{color:var(--violet-100)}
  .phero .sub{font-size:var(--text-lg);line-height:var(--lh-normal);color:rgba(255,255,255,0.85);margin:28px auto 0;max-width:54ch}
  .phero-cta{display:flex;gap:12px;margin-top:40px;flex-wrap:wrap;justify-content:center}
  /* left-aligned hero text, still inside the centered block. Zero the auto
     side-margins (h1/sub use margin:auto to center) so every line starts at the
     same left x. */
  .phero--left .panel__inner{align-items:flex-start;text-align:left}
  .phero--left h1,
  .phero--left .sub{margin-left:0;margin-right:0}
  .phero--left .phero-cta{justify-content:flex-start}
  /* AI variant: black panel with the looping encryption-wave video + dark
     gradient (same treatment as the landing AI card). Black is reserved for AI. */
  .phero--ai .phero-panel{background:var(--cat-ai-bg)}
  .phero--ai .ph-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;pointer-events:none;
    opacity:0;transition:opacity 4.5s var(--ease-out) 0.5s}
  .phero--ai .phero-panel.video-in .ph-video{opacity:1}
  .phero--ai .phero-panel::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
    background:linear-gradient(122deg,rgba(0,0,0,0.96) 0%,rgba(0,0,0,0.88) 46%,rgba(0,0,0,0.40) 100%)}
  .phero--ai .panel__inner{z-index:2}
  .phero--ai h1,.phero--ai .sub{text-shadow:0 1px 16px rgba(0,0,0,0.6)}
  .phero--ai h1 .hl{color:var(--violet-300)}

  /* --- code block: deep-violet (network) panel; black is reserved for AI --- */
  .codewrap{max-width:880px;margin:0 auto}
  .codeblock{background:var(--violet-900);border:1px solid rgba(255,255,255,0.14);border-radius:var(--radius-lg);
    overflow:hidden;box-shadow:var(--shadow-lg)}
  .codeblock-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative;
    padding:13px 16px;border-bottom:1px solid rgba(255,255,255,0.14)}
  .codeblock-bar .lbl{position:absolute;left:50%;transform:translateX(-50%);font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);
    text-transform:uppercase;color:var(--violet-200);pointer-events:none}
  .codeblock-dots{display:flex;gap:6px}
  .codeblock-dots i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,0.16)}
  .codeblock pre{margin:0;padding:22px 20px;overflow-x:auto}
  .codeblock code{font-family:ui-monospace,"SF Mono","SFMono-Regular",Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:14px;line-height:1.6;color:#fff;white-space:pre}
  .codeblock .tok-c{color:var(--violet-200)}
  .codeblock .tok-d{color:rgba(255,255,255,0.55)}
  .code-copy{flex:none;display:inline-flex;align-items:center;gap:7px;cursor:pointer;
    font-family:var(--font-mono);font-size:10px;letter-spacing:var(--tracking-mono);text-transform:uppercase;
    color:rgba(255,255,255,0.7);background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.18);
    border-radius:var(--radius-sm);padding:6px 10px;transition:background var(--dur) var(--ease-out),color var(--dur) var(--ease-out)}
  .code-copy:hover{background:rgba(255,255,255,0.12);color:#fff}
  .code-copy svg{width:13px;height:13px}
  .code-note{text-align:center;margin:18px auto 0;font-size:14px;color:var(--fg3);max-width:60ch}

  /* --- use-case overview grid (auto-fit cards) --- */
  .use-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:56px;text-align:left}
  .use-card{display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--border);
    border-radius:var(--radius-lg);padding:26px 24px 22px;box-shadow:var(--shadow-sm);color:inherit;
    transition:border-color var(--dur) var(--ease-out),box-shadow var(--dur) var(--ease-out),transform var(--dur-fast) var(--ease-out)}
  .use-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md)}
  .use-card:active{transform:scale(0.985)}
  .use-num{display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);color:var(--accent);opacity:.6;margin-bottom:16px}
  .use-card h3{font-size:var(--text-h4);font-weight:500;margin:0;color:var(--fg1);letter-spacing:-0.01em}
  .use-card p{font-size:var(--text-body);color:var(--fg2);line-height:var(--lh-normal);margin:9px 0 18px}
  .use-card .ic-link{margin-top:auto;font-size:14px;color:var(--accent);display:inline-flex;align-items:center;gap:8px}
  .use-card:hover .ic-chev{transform:translateX(3px)}
  @media (max-width:1080px){.use-grid{grid-template-columns:1fr 1fr}}
  @media (max-width:600px){.use-grid{grid-template-columns:1fr}}

  /* --- detailed use-case BOXES (problem / solution / enables) — crypto gray --- */
  .uc{margin-top:22px;scroll-margin-top:164px}
  .uc .uc-inner{display:grid;grid-template-columns:0.92fr 1.08fr;gap:48px;align-items:center}
  .uc:nth-child(odd) .uc-visual{order:2}
  .uc-num{font-family:var(--font-mono);font-size:12px;letter-spacing:var(--tracking-mono);color:var(--accent);text-transform:uppercase}
  .uc-title{font-size:var(--text-h3);line-height:var(--lh-snug);letter-spacing:var(--tracking-head);font-weight:400;margin:12px 0 0;color:var(--fg1);max-width:18ch}
  .uc-blocks{margin-top:24px;display:flex;flex-direction:column;gap:18px}
  .uc-block .uc-k{font-family:var(--font-mono);font-size:10.5px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--accent);display:block;margin-bottom:7px}
  .uc-block p{font-size:14.5px;line-height:1.6;color:var(--fg2);margin:0;max-width:54ch}
  .uc-block.is-problem p{color:var(--fg3)}
  /* visual side: white inset card with a violet dot field (crypto box keeps gray) */
  .uc-visual{position:relative;aspect-ratio:4/3;border-radius:var(--radius-lg);overflow:hidden;
    background:var(--bg);border:1px solid var(--border)}
  .uc-visual dot-grid{position:absolute;inset:0}
  .uc-vlabel{position:absolute;left:20px;bottom:18px;z-index:3;font-family:var(--font-mono);font-size:11px;
    letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--accent);pointer-events:none}
  @media (max-width:880px){
    .uc .uc-inner{grid-template-columns:1fr;gap:26px}
    .uc:nth-child(odd) .uc-visual{order:0}
    .uc-visual{aspect-ratio:16/9}
  }

  /* --- generations comparison (3 cards: X / check lists) --- */
  .gens-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:56px;text-align:left}
  .gen{display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--border);
    border-radius:var(--radius-lg);padding:28px 26px;box-shadow:var(--shadow-sm)}
  .gen--win{border-color:rgba(109,69,255,0.45);box-shadow:var(--glow-violet-soft)}
  .gen-num{font-family:var(--font-mono);font-size:11px;letter-spacing:var(--tracking-mono);color:var(--fg3)}
  .gen--win .gen-num{color:var(--accent)}
  .gen-stage{font-family:var(--font-mono);font-size:10.5px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--accent);margin-top:6px}
  .gen h3{font-size:20px;font-weight:500;letter-spacing:-0.01em;color:var(--fg1);margin:12px 0 0}
  .gen > p{font-size:14px;line-height:1.58;color:var(--fg2);margin:10px 0 18px}
  .gen ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px;border-top:1px solid var(--border);padding-top:18px}
  .gen li{display:flex;gap:10px;font-size:13.5px;line-height:1.45;color:var(--fg2)}
  .gen li svg{width:16px;height:16px;flex:none;margin-top:1px}
  .gen li.no svg{color:var(--ink-300)}
  .gen li.no{color:var(--fg3)}
  .gen li.yes svg{color:var(--success)}
  @media (max-width:880px){.gens-grid{grid-template-columns:1fr}}

  /* --- architecture diagram (Solana + Arcium) --- */
  .arch{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:52px}
  .arch-col{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-sm)}
  .arch-col-head{display:flex;align-items:center;gap:10px;margin-bottom:18px;font-family:var(--font-mono);
    font-size:11px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--fg2)}
  .arch-col-head img,.arch-col-head .logomark{width:20px;height:20px}
  .arch-col-head .arch-brand{width:auto;height:15px}
  .arch-tag-logo{height:11px;width:auto;margin-right:5px;vertical-align:-1px}
  .arch-slot{font-family:var(--font-mono);font-size:10px;letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--fg3);margin:18px 0 9px}
  .arch-row{display:flex;flex-direction:column;gap:9px}
  .arch-chip{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px;
    border-radius:var(--radius-md);font-size:14px;color:var(--fg2);border:1px solid var(--border);background:var(--bg-subtle)}
  .arch-chip.is-enc{border-color:rgba(109,69,255,0.4);background:var(--accent-soft);color:var(--fg1)}
  .arch-chip .tag{font-family:var(--font-mono);font-size:9px;letter-spacing:var(--tracking-mono);text-transform:uppercase}
  .arch-chip.is-enc .tag{color:var(--accent)}
  .arch-chip.is-pub .tag{color:var(--fg3)}
  @media (max-width:760px){.arch{grid-template-columns:1fr}}

  /* --- developer resources grid --- */
  .res-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:56px;text-align:left}
  .res-card{display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--border);
    border-radius:var(--radius-lg);padding:26px 26px 22px;box-shadow:var(--shadow-sm);color:inherit;
    transition:border-color var(--dur) var(--ease-out),box-shadow var(--dur) var(--ease-out),transform var(--dur-fast) var(--ease-out)}
  .res-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md)}
  .res-card:active{transform:scale(0.99)}
  .res-head{display:flex;align-items:center;gap:11px;margin-bottom:9px}
  .res-head svg{width:22px;height:22px;flex:none;color:var(--accent)}
  .res-card h3{font-size:18px;font-weight:500;margin:0;color:var(--fg1)}
  .res-card p{font-size:14px;line-height:var(--lh-normal);color:var(--fg2);margin:8px 0 18px}
  .res-card .ic-link{margin-top:auto;font-size:14px;color:var(--accent);display:inline-flex;align-items:center;gap:8px}
  .res-card:hover .ic-chev{transform:translateX(3px)}
  @media (max-width:760px){.res-grid{grid-template-columns:1fr}}

  /* --- FAQ accordion --- */
  .faq{max-width:820px;margin:52px auto 0}
  .faq-item{border-top:1px solid var(--border)}
  .faq-item:last-child{border-bottom:1px solid var(--border)}
  .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    background:none;border:0;cursor:pointer;text-align:left;padding:22px 4px;
    font-family:var(--font-sans);font-size:17px;color:var(--fg1);transition:color var(--dur) var(--ease-out)}
  .faq-q:hover{color:var(--accent)}
  .faq-q .arr{font-family:var(--font-mono);font-style:normal;font-size:20px;line-height:1;color:var(--fg3);
    transform:rotate(90deg);transition:transform var(--dur) var(--ease-out),color var(--dur) var(--ease-out);flex:none}
  .faq-item.open .faq-q{color:var(--accent)}
  .faq-item.open .faq-q .arr{transform:rotate(-90deg);color:var(--accent)}
  .faq-a{overflow:hidden;max-height:0;transition:max-height 0.4s var(--ease-out)}
  .faq-a-inner{padding:0 4px 24px;font-size:15px;line-height:1.62;color:var(--fg2);max-width:64ch}