/* Zebrix family tokens. Values mirror BlackSplash client/src/index.css `.dark` (zebrixgroup.com). */
:root {
  color-scheme: dark;
  --z-bg: hsl(0 0% 0%);
  --z-fg: hsl(0 0% 95%);
  --z-muted: hsl(0 0% 55%);
  --z-line: hsl(0 0% 12%);
  --z-card: hsl(0 0% 4%);
  --z-card-line: hsl(0 0% 8%);
  --z-accent: hsl(210 15% 12%);
  --z-blue: hsl(210 100% 60%);
  --z-blue-hover: hsl(210 100% 72%);
  --z-on-blue: hsl(240 6% 4%);
  --z-warn: hsl(0 84% 60%);
  /* Hero overlay and glass strips: the bg-black/60 overlay and credential badges on zebrixgroup.com. */
  --z-shade: hsl(0 0% 0% / 0.6);
  --z-glass: hsl(0 0% 0% / 0.6);
  --z-blue-soft: hsl(210 100% 60% / 0.1);
  --z-blue-line: hsl(210 100% 60% / 0.3);
  --z-radius: 8px;
  --z-font: Inter, "Open Sans", Arial, sans-serif;
}
/* zebrixgroup.ai layout. Colours and radii come only from tokens.css (enforced by tests/theme.test.mjs). */
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--z-bg);color:var(--z-fg);font-family:var(--z-font);font-synthesis:none;line-height:1.6}
a{color:inherit;text-decoration:none}
a:hover{color:var(--z-blue-hover)}
a:focus-visible,.button:focus-visible{outline:2px solid var(--z-blue);outline-offset:4px}
img{display:block;max-width:100%;height:auto}
.wrap{max-width:1200px;margin:0 auto;padding:0 40px}
.skip{position:absolute;left:16px;top:-100px;background:var(--z-blue);color:var(--z-on-blue);padding:12px;z-index:10;border-radius:var(--z-radius)}
.skip:focus{top:10px}
.site-header{position:sticky;top:0;z-index:5;background:var(--z-bg);border-bottom:1px solid var(--z-line)}
.nav{height:72px;display:flex;align-items:center;gap:32px}
.brand img{width:132px}
.nav nav{display:flex;flex-wrap:wrap;gap:24px;margin-left:auto;font-size:14px;font-weight:500;color:var(--z-muted)}
.nav nav a:hover{color:var(--z-fg)}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:12px 20px;background:var(--z-blue);color:var(--z-on-blue);border:1px solid var(--z-blue);border-radius:var(--z-radius);font-weight:600;font-size:14px}
.button:hover{background:var(--z-blue-hover);color:var(--z-on-blue)}
.button-small{min-height:44px;padding:10px 16px}
.text-link{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-weight:500;font-size:14px;color:var(--z-blue)}
.eyebrow{margin:0 0 12px;color:var(--z-blue);font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase}
.hero{padding:80px 0 56px;max-width:820px}
.hero h1{margin:0 0 20px;font-size:clamp(36px,5vw,56px);line-height:1.1;letter-spacing:-.02em;font-weight:700}
.intro{margin:0;color:var(--z-muted);font-size:18px;line-height:1.7}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:28px}
.section{padding:48px 0;border-top:1px solid var(--z-line)}
.section h2,.closing h2{margin:0 0 16px;font-size:clamp(24px,3vw,32px);line-height:1.25;letter-spacing:-.01em;font-weight:600}
.section h3{margin:0 0 8px;font-size:18px;font-weight:600}
.section p{max-width:760px;color:var(--z-muted);margin:0 0 12px}
.more{margin-top:8px}
.flow{list-style:none;margin:24px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{font-size:11px;letter-spacing:.12em;color:var(--z-muted)}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:24px}
.card{background:var(--z-card);border:1px solid var(--z-card-line);border-radius:var(--z-radius);padding:24px}
.card h3 a,.guide-list a,.site-footer a{display:inline-flex;align-items:center;min-height:44px}
.card h3 a{color:var(--z-fg)}
.card h3 a:hover{color:var(--z-blue-hover)}
.checks{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:10px;max-width:760px}
.checks li{position:relative;padding-left:24px;color:var(--z-fg)}
.checks li::before{content:"";position:absolute;left:0;top:.6em;width:10px;height:10px;border-radius:var(--z-radius);background:var(--z-blue)}
.muted-list li{color:var(--z-muted)}
.muted-list li::before{background:var(--z-line)}
.band{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin:16px 0;padding:28px;background:var(--z-accent);border:1px solid var(--z-card-line);border-radius:var(--z-radius)}
.band-text{margin:0;max-width:760px}
.faq dl{margin:0;display:grid;gap:20px;max-width:820px}
.faq dt{font-weight:600}
.faq dd{margin:6px 0 0;color:var(--z-muted)}
.guide-list{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:24px}
.guide-list time{display:block;font-size:12px;color:var(--z-muted)}
.guide-list a{font-size:20px;font-weight:600}
.author-note{margin:32px 0;padding:20px 24px;background:var(--z-card);border:1px solid var(--z-card-line);border-radius:var(--z-radius);color:var(--z-muted);font-size:14px}
.author-note a{color:var(--z-blue)}
.author-note p{margin:0 0 8px}
.closing{padding:56px 0 72px;border-top:1px solid var(--z-line)}
.site-footer{border-top:1px solid var(--z-line);padding:32px 0 24px;font-size:13px;color:var(--z-muted)}
.family{display:flex;flex-wrap:wrap;gap:8px 24px;padding-bottom:20px;margin-bottom:24px;border-bottom:1px solid var(--z-line);font-weight:500;color:var(--z-fg)}
.footer-main{display:grid;grid-template-columns:1fr 1.4fr 1fr;gap:32px}
.footer-main strong{color:var(--z-fg)}
.footer-main p{margin:6px 0}
.footer-main nav{display:flex;flex-direction:column;gap:0}
.footer-bottom{margin:24px 0 0;font-size:12px}
.not-found{padding:96px 40px;min-height:60vh}
@media(max-width:900px){
  .nav{height:auto;flex-wrap:wrap;gap:12px;padding-top:12px;padding-bottom:12px}
  .nav nav{order:3;width:100%;margin-left:0;gap:4px 16px}
  .nav nav a{display:inline-flex;align-items:center;min-height:44px}
  .nav .button-small{margin-left:auto}
  .flow{grid-template-columns:1fr 1fr}
  .footer-main{grid-template-columns:1fr}
}
@media(max-width:600px){
  .wrap{padding:0 16px}
  .hero{padding:48px 0 40px}
  .flow,.cards{grid-template-columns:1fr}
  .not-found{padding:64px 16px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.notice{display:none;margin:0 0 20px;padding:16px 20px;border:1px solid var(--z-line);border-radius:var(--z-radius);background:var(--z-card)}
.notice:target{display:block}
.notice p{margin:0;color:var(--z-fg)}
.notice-ok{border-color:var(--z-blue)}
.notice-warn{border-color:var(--z-warn)}
.access-form{max-width:760px;display:grid;gap:20px}
.fields{display:grid;grid-template-columns:1fr 1fr;gap:16px 20px}
.field{margin:0;display:grid;gap:6px}
.field label,.access-form legend{font-size:14px;font-weight:500;color:var(--z-fg)}
.access-form input:not([type=radio]):not([type=checkbox]),.access-form textarea{width:100%;min-height:44px;padding:10px 12px;background:var(--z-card);color:var(--z-fg);border:1px solid var(--z-muted);border-radius:var(--z-radius);font:inherit}
.access-form input:focus-visible,.access-form textarea:focus-visible{outline:2px solid var(--z-blue);outline-offset:2px}
.access-form fieldset{margin:0;padding:0;border:0;display:flex;flex-wrap:wrap;gap:4px 20px}
.access-form legend{padding:0;margin-bottom:6px;width:100%}
.choice{display:inline-flex;align-items:center;gap:8px;min-height:44px;color:var(--z-fg)}
.choice input{accent-color:var(--z-blue);width:18px;height:18px}
.access-form .button{justify-self:start}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
@media(max-width:600px){.fields{grid-template-columns:1fr}}
/* Family bar: the way back to zebrixgroup.com and the other Zebrix sites. */
.family-bar{background:var(--z-card);border-bottom:1px solid var(--z-line);font-size:12px;font-weight:500}
.family-bar .wrap{display:flex;flex-wrap:wrap;gap:0 24px}
.family-bar a{display:inline-flex;align-items:center;gap:6px;min-height:44px;color:var(--z-muted)}
.family-bar a:hover{color:var(--z-fg)}
.family-bar a[aria-current]{color:var(--z-fg)}
/* Video hero, matching the zebrixgroup.com home hero. */
.hero-media{position:relative;display:flex;flex-direction:column;justify-content:flex-end;min-height:min(78vh,760px);overflow:hidden;background-color:var(--z-bg);background-size:cover;background-position:center;border-bottom:1px solid var(--z-line)}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-shade{position:absolute;inset:0;background:var(--z-shade)}
.hero-inner{position:relative;z-index:1;width:100%;flex:1;display:flex;align-items:center}
.hero-media .hero{padding:96px 0 56px}
.hero-media .intro{color:var(--z-fg);opacity:.85}
.credentials{position:relative;z-index:1;margin:0;padding:16px;list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:10px;background:var(--z-glass);border-top:1px solid var(--z-line)}
.credentials li{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;font-size:12px;font-weight:500;white-space:nowrap;background:var(--z-blue-soft);border:1px solid var(--z-blue-line);border-radius:var(--z-radius)}
.credentials li::before{content:"";width:6px;height:6px;border-radius:var(--z-radius);background:var(--z-blue)}
/* Product cards with a still from each product video. */
.card-media{padding:0;overflow:hidden;transition:border-color .2s,transform .2s}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--z-card-line);filter:saturate(.9)}
.card-body{padding:20px 24px 24px}
.card-media:hover{border-color:var(--z-blue-line);transform:translateY(-2px)}
/* Flow: numbered steps on a connecting line. */
.flow{position:relative;counter-reset:step}
.flow li{position:relative;border-top:0;padding:56px 20px 20px;background:var(--z-card);border:1px solid var(--z-card-line);border-radius:var(--z-radius)}
.flow li::before{counter-increment:step;content:counter(step);position:absolute;top:16px;left:20px;width:28px;height:28px;display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--z-on-blue);background:var(--z-blue);border-radius:var(--z-radius)}
.flow li:not(:last-child)::after{content:"";position:absolute;top:30px;right:-25px;width:26px;height:2px;background:var(--z-blue-line)}
/* Features as a card grid. */
.feature-grid{margin:16px 0 0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.feature-grid li{position:relative;padding:16px 16px 16px 40px;background:var(--z-card);border:1px solid var(--z-card-line);border-radius:var(--z-radius)}
.feature-grid li::before{content:"";position:absolute;left:16px;top:24px;width:10px;height:10px;border-radius:var(--z-radius);background:var(--z-blue)}
.band{background:var(--z-accent);border-color:var(--z-blue-line)}
@media(max-width:900px){.flow li:not(:last-child)::after{display:none}}
@media(max-width:600px){.family-bar .wrap{gap:0 14px}.feature-grid{grid-template-columns:1fr}.hero-media{min-height:auto}.hero-media .hero{padding:56px 0 40px}.credentials{justify-content:flex-start}}
@media(prefers-reduced-motion:reduce){.hero-video{display:none}.card-media,.card-media:hover{transition:none;transform:none}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}