/* ==========================================================================
   alt.qa design system v2 — "Agent Readiness Assurance"
   Tokens derived from stealth.html / landing.css (brand green #3faa78).
   One file, no framework. Light + dark. Mobile-first.
   ========================================================================== */

:root{
  --bg:#fcfcfd; --bg-2:#f5f6f8; --bg-3:#eceef2; --bg-inset:#f0f2f5;
  --ink:#0f1216; --ink-2:#434953; --ink-3:#5f6671; --line:#e4e7ec; --line-2:#d3d8df;
  --brand:#2f9a69; --brand-ink:#1f6f4b; --brand-soft:#e6f7ee; --brand-glow:rgba(63,170,120,.16);
  --blue:#2f6fdb; --blue-soft:#eaf2ff; --violet:#6a4fd6; --violet-soft:#f0ebff;
  --amber:#b7791f; --amber-soft:#fdf3e1; --red:#c4382f; --red-soft:#fdecea;
  --pass:#2f9a69; --fail:#c4382f; --warn:#c98a12; --skip:#9a9aa3;
  --shadow-sm:0 1px 2px rgba(15,23,32,.06); --shadow:0 1px 2px rgba(15,23,32,.05),0 10px 28px -10px rgba(15,23,32,.14);
  --shadow-lg:0 2px 4px rgba(15,23,32,.04),0 28px 56px -18px rgba(15,23,32,.24);
  --r-sm:8px; --r:12px; --r-lg:18px; --r-xl:24px;
  --sans:'Geist','Inter',ui-sans-serif,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'Geist Mono','JetBrains Mono','SF Mono',ui-monospace,Menlo,Consolas,monospace;
  --maxw:1200px; --gutter:clamp(16px,4vw,32px);
  --nav-h:64px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0b0d10; --bg-2:#111418; --bg-3:#181c21; --bg-inset:#14171c;
    --ink:#eef0f2; --ink-2:#b9bec6; --ink-3:#8b929b; --line:#23282e; --line-2:#2e343b;
    --brand:#5fd39b; --brand-ink:#8ee7bd; --brand-soft:#15291f; --brand-glow:rgba(95,211,155,.14);
    --blue:#7aa7ff; --blue-soft:#141f33; --violet:#a896ff; --violet-soft:#1d1833;
    --amber:#f0b54a; --amber-soft:#2a2112; --red:#ff7b72; --red-soft:#2d1614;
    --pass:#5fd39b; --fail:#ff7b72; --warn:#f0b54a;
    --shadow-sm:0 1px 2px rgba(0,0,0,.4); --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -8px rgba(0,0,0,.6);
    --shadow-lg:0 24px 48px -16px rgba(0,0,0,.7);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0b0d10; --bg-2:#111418; --bg-3:#181c21; --bg-inset:#14171c;
  --ink:#eef0f2; --ink-2:#b9bec6; --ink-3:#8b929b; --line:#23282e; --line-2:#2e343b;
  --brand:#5fd39b; --brand-ink:#8ee7bd; --brand-soft:#15291f; --brand-glow:rgba(95,211,155,.14);
  --blue:#7aa7ff; --blue-soft:#141f33; --violet:#a896ff; --violet-soft:#1d1833;
  --amber:#f0b54a; --amber-soft:#2a2112; --red:#ff7b72; --red-soft:#2d1614;
  --pass:#5fd39b; --fail:#ff7b72; --warn:#f0b54a;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4); --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -8px rgba(0,0,0,.6);
  --shadow-lg:0 24px 48px -16px rgba(0,0,0,.7);
  color-scheme:dark;
}


/* shell.css — v2 nav + footer for legacy (Bootstrap) pages. Generated from alt.css. */
.altshell,.altshell *{box-sizing:border-box}
.altshell{font-family:var(--sans);-webkit-font-smoothing:antialiased}
.altshell a{text-decoration:none}
.altshell svg{width:1em;height:1em;display:inline-block}
.altshell ul{margin:0}
header.nx.altshell{display:block;padding:0;margin:0;flex-wrap:nowrap}
.altshell .wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.altshell .muted{color:var(--ink-3)}
.altshell .mt-2{margin-top:16px}
.altshell input[type=email]{min-height:38px;padding:8px 12px;border:1px solid var(--line-2);border-radius:10px;background:var(--bg);color:var(--ink);font:inherit;font-size:.9rem;flex:1 1 180px}
.altshell .inline-form{display:flex;gap:8px;flex-wrap:wrap}
.altshell .hp{position:absolute;left:-9999px}
.altshell .sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.altshell h4{font-size:1rem;margin:0 0 14px}
.skip-link{position:absolute;left:12px;top:-60px;z-index:1000;background:#1d1d21;color:#fff;padding:10px 14px;border-radius:8px;font-weight:600}
.skip-link:focus{top:12px}
.hide-d{display:none}
@media (max-width:1060px){.nx.open .hide-d{display:block}}
/* ---------- Buttons ---------- */
.altshell .btn{--b:var(--ink);display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 18px;border-radius:10px;border:1px solid transparent;font:600 .95rem/1 var(--sans);cursor:pointer;text-decoration:none!important;transition:transform .12s ease,box-shadow .2s ease,background .2s ease;white-space:nowrap}
.altshell .btn:active{transform:translateY(1px)}
.altshell .btn-primary{background:var(--ink);color:var(--bg);box-shadow:var(--shadow-sm)}
.altshell .btn-primary:hover{box-shadow:var(--shadow)}
.altshell .btn-brand{background:var(--brand);color:#fff}
:root[data-theme="dark"] .altshell .btn-brand{color:#06120c}
.altshell .btn-ghost{background:var(--bg);color:var(--ink);border-color:var(--line-2)}
.altshell .btn-ghost:hover{background:var(--bg-3)}
.altshell .btn-link{background:none;color:var(--brand-ink);padding-inline:4px}
.altshell .btn-sm{min-height:34px;padding:6px 12px;font-size:.85rem;border-radius:8px}
.altshell .btn-lg{min-height:52px;padding:14px 22px;font-size:1.02rem}
.altshell .btn .arrow{transition:transform .2s}
.altshell .btn:hover .arrow{transform:translateX(3px)}
.altshell .btn[disabled]{opacity:.5;cursor:not-allowed}

/* ---------- Nav ---------- */
.nx.altshell{position:sticky;top:0;z-index:100;height:var(--nav-h);background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid var(--line)}
.nx .wrap{height:100%;display:flex;align-items:center;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;letter-spacing:-.02em;font-size:1.08rem;text-decoration:none!important}
.brand-mark{width:28px;height:28px;border-radius:8px;background:var(--brand);color:#fff;display:grid;place-items:center;font:800 .72rem/1 var(--mono);letter-spacing:-.02em;box-shadow:inset 0 -2px 0 rgba(0,0,0,.18)}
.nx-menu{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.nx-item{position:relative}
.nx-link{display:inline-flex;align-items:center;gap:4px;height:38px;padding:0 12px;border-radius:8px;color:var(--ink-2);font-weight:500;font-size:.93rem;background:none;border:0;cursor:pointer;font-family:inherit}
.nx-link:hover,.nx-item:focus-within>.nx-link,.nx-link[aria-current="page"]{color:var(--ink);background:var(--bg-3);text-decoration:none}
.nx-link svg{width:12px;height:12px;opacity:.6}
.mega{position:absolute;top:calc(100% + 8px);left:-12px;min-width:560px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-lg);padding:14px;display:grid;grid-template-columns:1fr 1fr;gap:4px;opacity:0;visibility:hidden;transform:translateY(-4px);transition:.16s ease}
.mega.one{min-width:300px;grid-template-columns:1fr}
.nx-item:hover>.mega,.nx-item:focus-within>.mega,.nx-item.open>.mega{opacity:1;visibility:visible;transform:none}
.mega a{display:block;padding:10px 12px;border-radius:10px;color:var(--ink);text-decoration:none}
.mega a:hover{background:var(--bg-3)}
.mega a b{display:block;font-weight:600;font-size:.93rem}
.mega a span{display:block;color:var(--ink-3);font-size:.82rem;line-height:1.4;margin-top:2px}
.mega .mega-head{grid-column:1/-1;font:600 .7rem/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);padding:8px 12px 4px}
.nx-cta{margin-left:auto;display:flex;gap:8px;align-items:center}
.nx-toggle{display:none;margin-left:auto;width:44px;height:44px;border-radius:10px;border:1px solid var(--line-2);background:var(--bg);color:var(--ink);align-items:center;justify-content:center}
.theme-btn{width:38px;height:38px;border-radius:9px;border:1px solid var(--line);background:none;color:var(--ink-2);display:inline-grid;place-items:center;cursor:pointer}
.theme-btn svg{width:16px;height:16px}
@media (max-width:1060px){
  .nx-menu,.nx-cta .hide-m{display:none}
  .nx-toggle{display:inline-flex}
  .nx-cta{margin-left:0}
  .nx.open .nx-menu{display:flex;flex-direction:column;align-items:stretch;position:fixed;inset:var(--nav-h) 0 0 0;background:var(--bg);padding:12px var(--gutter) 40px;overflow:auto;gap:2px}
  .nx.open .mega{position:static;opacity:1;visibility:visible;transform:none;min-width:0;box-shadow:none;border:0;grid-template-columns:1fr;padding:0 0 8px 8px;display:none}
  .nx.open .nx-item.open>.mega{display:grid}
  .nx.open .nx-link{height:48px;width:100%;justify-content:space-between;font-size:1rem}
}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--line);background:var(--bg-2);padding:56px 0 28px;font-size:.9rem}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(5,1fr);gap:28px}
.footer h4{font:600 .72rem/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);margin-bottom:14px}
.footer ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.footer a{color:var(--ink-2)}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;color:var(--ink-3);font-size:.82rem}
.footer-bottom a{color:var(--ink-3)}
@media (max-width:980px){.footer-grid{grid-template-columns:repeat(3,1fr)}.footer-brand{grid-column:1/-1}}
@media (max-width:560px){.footer-grid{grid-template-columns:repeat(2,1fr)}}

/* Row 203: legacy content never scrolls the page sideways */
html,body{overflow-x:hidden}
#main-content table{display:block;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
#main-content pre,#main-content code{max-width:100%;overflow-x:auto;overflow-wrap:anywhere}
#main-content img{max-width:100%;height:auto}
.altshell .btn-primary{background:var(--ink)!important;color:var(--bg)!important;border-color:transparent!important;box-shadow:var(--shadow-sm)!important;transform:none!important}
.altshell .btn-ghost{background:var(--bg)!important;color:var(--ink)!important;border-color:var(--line-2)!important}