/* ── Tokens ─────────────────────────────────────────────────────────
   Light-first: a spec sheet reads as paper. Two functional hues —
   teal carries VIDEO signal, amber carries AUDIO. They mean something
   in the diagrams, so they are never used decoratively.            */
:root{
  --paper:#EDEBE3; --paper-2:#FCFBF8; --sunk:#E3E0D6;
  --ink:#14181B; --ink-2:#454D52; --muted:#78807F;
  --rule:#D6D4CC; --rule-soft:#E4E2DA;
  --video:#0E7C66; --video-soft:rgba(14,124,102,.10);
  --audio:#B45309; --audio-soft:rgba(180,83,9,.10);
  --grid:rgba(20,24,27,.040);
  --grid-major:rgba(14,124,102,.085);

  --f-d:'Saira','Helvetica Neue',Arial,sans-serif;
  --f-b:'Public Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --f-m:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --pad:clamp(1.1rem,4vw,2.5rem); --maxw:1180px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#0D1011; --paper-2:#191D1F; --sunk:#080B0B;
    --ink:#E9EBEA; --ink-2:#B0B7B6; --muted:#7C8483;
    --rule:#292E30; --rule-soft:#202426;
    --video:#3FBFA0; --video-soft:rgba(63,191,160,.13);
    --audio:#E0A458; --audio-soft:rgba(224,164,88,.13);
    --grid:rgba(233,235,234,.045);
    --grid-major:rgba(63,191,160,.10);
  }
}
:root[data-theme="dark"]{
  --paper:#0D1011; --paper-2:#191D1F; --sunk:#080B0B;
  --ink:#E9EBEA; --ink-2:#B0B7B6; --muted:#7C8483;
  --rule:#292E30; --rule-soft:#202426;
  --video:#3FBFA0; --video-soft:rgba(63,191,160,.13);
  --audio:#E0A458; --audio-soft:rgba(224,164,88,.13);
  --grid:rgba(233,235,234,.045);
  --grid-major:rgba(63,191,160,.10);
}

*,*::before,*::after{box-sizing:border-box;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--f-b);font-size:16.5px;line-height:1.62;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:
    linear-gradient(var(--grid-major) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid-major) 1px,transparent 1px),
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:140px 140px,140px 140px,28px 28px,28px 28px;
}
/* Atmospheric wash in the two signal colours — fixed, so it stays a ground
   rather than scaling with a 10,000px page. Kept faint: the BOM table has to
   stay the most legible thing here. */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(1100px 720px at 84% -12%, color-mix(in srgb,var(--video) 15%,transparent), transparent 66%),
    radial-gradient(880px 620px at -8% 58%, color-mix(in srgb,var(--audio) 9%,transparent), transparent 62%);
}
a{color:inherit;}
:focus-visible{outline:2px solid var(--video);outline-offset:3px;}
h1,h2,h3{font-family:var(--f-d);margin:0;font-weight:700;letter-spacing:-.02em;text-wrap:balance;}
h1{font-size:clamp(2.2rem,5.4vw,3.9rem);line-height:1.03;}
h2{font-size:clamp(1.55rem,3.2vw,2.3rem);line-height:1.12;}
h3{font-size:1.08rem;font-weight:600;letter-spacing:-.005em;}
p{margin:0;}
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad);}
.sec{padding:clamp(3rem,7vw,5.5rem) 0;}

.mono{font-family:var(--f-m);font-variant-numeric:tabular-nums;}
.label{
  font-family:var(--f-m);font-size:.7rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);
  display:inline-flex;align-items:center;gap:.55rem;
}
.label::before{content:"";width:14px;height:1px;background:var(--video);}
h2.label,h3.label{font-weight:500;margin:0;font-size:.7rem;}

/* ── Nav ────────────────────────────────────────────────────────── */
.nav{position:sticky;top:0;z-index:60;background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .3s;}
.nav.stuck{border-bottom-color:var(--rule);}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:.85rem var(--pad);display:flex;align-items:center;gap:1.4rem;}
.brand{font-family:var(--f-d);font-weight:700;font-size:1.05rem;letter-spacing:-.01em;white-space:nowrap;letter-spacing:-.01em;text-decoration:none;display:flex;align-items:center;gap:.55rem;}
.brand .m{width:16px;height:16px;border:2px solid var(--video);border-radius:3px;position:relative;flex:0 0 auto;}
.brand .m::after{content:"";position:absolute;inset:3px;background:var(--video);border-radius:1px;}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:1.2rem;}
.nav-links a{font-family:var(--f-m);font-size:.76rem;letter-spacing:.06em;text-decoration:none;color:var(--muted);transition:color .2s;}
.nav-links a:hover{color:var(--ink);}
@media(max-width:900px){.nav-links a:not(.cta){display:none;}}
.nav-links .narrow{display:none;}
@media(max-width:560px){
  .nav-in{gap:.75rem;}
  .nav-links .wide{display:none;}
  .nav-links .narrow{display:inline;}
  .btn-sm{font-size:.74rem;padding:.4rem .65rem;}
  .brand .m{width:13px;height:13px;}
}

.btn{
  font-family:var(--f-b);font-weight:600;font-size:.92rem;text-decoration:none;
  padding:.7rem 1.25rem;border:1px solid var(--rule);background:var(--paper-2);color:var(--ink);
  display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;border-radius:3px;
  transition:border-color .2s,background .2s,transform .2s;
}
.btn:hover{transform:translateY(-1px);border-color:var(--video);}
.btn-p{background:var(--video);border-color:var(--video);color:var(--paper);}
.btn-p:hover{filter:brightness(1.07);}
.btn-sm{font-size:.8rem;padding:.42rem .8rem;}

/* ── Hero ───────────────────────────────────────────────────────── */
.hero{padding:clamp(2.5rem,6vw,4.5rem) 0 clamp(2rem,4vw,3rem);}

.hero-grid > *{min-width:0;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:clamp(2rem,4vw,3.5rem);align-items:center;}
@media(max-width:940px){.hero-grid{grid-template-columns:minmax(0,1fr);}}
.hero .label{margin-bottom:1.1rem;}
.hero h1{margin-bottom:1.1rem;}
.hero .lede{font-size:clamp(1.02rem,1.5vw,1.16rem);color:var(--ink-2);max-width:44ch;margin-bottom:1.7rem;}
.hero .lede b{color:var(--ink);font-weight:600;}
.hero-cta{display:flex;gap:.6rem;flex-wrap:wrap;}

figure{margin:0;}
figcaption{font-size:.85rem;color:var(--muted);margin-top:.9rem;line-height:1.5;}
.dia{background:var(--paper-2);border:1px solid var(--rule);border-radius:5px;padding:1.1rem;overflow-x:auto;}
.dia svg{max-width:100%;height:auto;display:block;min-width:520px;}
.legend{display:flex;gap:1.2rem;flex-wrap:wrap;margin-top:.85rem;font-family:var(--f-m);font-size:.7rem;color:var(--muted);}
.legend i{display:inline-flex;align-items:center;gap:.4rem;font-style:normal;}
.legend i::before{content:"";width:16px;height:2px;background:currentColor;}
.legend .v{color:var(--video);} .legend .a{color:var(--audio);}

/* ── Kit cards ──────────────────────────────────────────────────── */
.kits{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;}
@media(max-width:900px){.kits{grid-template-columns:1fr;}}
.kit{
  background:var(--paper-2);border:1px solid var(--rule);border-radius:5px;
  padding:1.5rem 1.35rem;display:flex;flex-direction:column;gap:.8rem;
  text-decoration:none;transition:border-color .25s,transform .25s;position:relative;
}
.kit:hover{border-color:var(--video);transform:translateY(-2px);}
.kit .tier{font-family:var(--f-m);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--video);}
.kit h3{font-family:var(--f-d);font-size:1.5rem;font-weight:700;}
.kit .price{font-family:var(--f-m);font-size:1.35rem;font-weight:500;letter-spacing:-.02em;}
.kit .price small{font-size:.7rem;color:var(--muted);letter-spacing:.08em;display:block;margin-top:.15rem;}
.kit p{color:var(--ink-2);font-size:.93rem;}
.kit .go{margin-top:auto;font-family:var(--f-m);font-size:.76rem;color:var(--video);letter-spacing:.04em;}
.kit.soon{opacity:.66;}
.kit .flag{position:absolute;top:1rem;right:1rem;font-family:var(--f-m);font-size:.6rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--audio);border:1px dashed color-mix(in srgb,var(--audio) 50%,transparent);padding:.15rem .45rem;border-radius:3px;}

/* ── Argument strip ─────────────────────────────────────────────── */
.args{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--rule-soft);border:1px solid var(--rule-soft);border-radius:5px;overflow:hidden;}
@media(max-width:820px){.args{grid-template-columns:1fr;}}
.arg{background:var(--paper-2);padding:1.5rem 1.35rem;}
.arg .n{font-family:var(--f-m);font-size:.7rem;color:var(--muted);letter-spacing:.1em;}
.arg h3{margin:.6rem 0 .5rem;}
.arg p{color:var(--ink-2);font-size:.93rem;}

/* ── Kit page ───────────────────────────────────────────────────── */
.kithead{display:grid;grid-template-columns:1.3fr 1fr;gap:clamp(1.5rem,3vw,3rem);align-items:end;padding-bottom:1.8rem;border-bottom:1px solid var(--rule);}
@media(max-width:860px){.kithead{grid-template-columns:1fr;align-items:start;}}
.total{font-family:var(--f-m);font-size:clamp(2rem,4.5vw,2.9rem);font-weight:500;letter-spacing:-.03em;line-height:1;}
.total small{display:block;font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:.5rem;}
.kit-cta{display:flex;flex-direction:column;gap:.55rem;margin-top:1.1rem;}

.notice{
  background:var(--audio-soft);border:1px dashed color-mix(in srgb,var(--audio) 45%,transparent);
  border-radius:4px;padding:.85rem 1rem;font-size:.88rem;color:var(--ink-2);margin:1.5rem 0;
}
.notice b{color:var(--audio);font-family:var(--f-m);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;display:block;margin-bottom:.3rem;}

.bom{width:100%;border-collapse:collapse;font-size:.92rem;}
.bom th{
  text-align:left;font-family:var(--f-m);font-size:.68rem;letter-spacing:.13em;text-transform:uppercase;
  color:var(--muted);font-weight:400;padding:.6rem .7rem;border-bottom:1px solid var(--rule);white-space:nowrap;
}
.bom td{padding:.9rem .7rem;border-bottom:1px solid var(--rule-soft);vertical-align:top;}
.bom tr:hover td{background:var(--paper-2);}
.bom .nm{font-weight:600;display:block;}
.bom .md{font-family:var(--f-m);font-size:.74rem;color:var(--muted);display:block;margin-top:.15rem;}
.bom .why{color:var(--ink-2);font-size:.87rem;max-width:34ch;}
.bom .conn{font-family:var(--f-m);font-size:.74rem;color:var(--ink-2);white-space:nowrap;}
.bom .conn .port{color:var(--video);}
.bom .conn .port.a{color:var(--audio);}
.bom .pr{font-family:var(--f-m);text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums;}
.bom tr.grp td{
  font-family:var(--f-m);font-size:.7rem;letter-spacing:.13em;text-transform:uppercase;
  color:var(--video);background:var(--sunk);padding-top:1.1rem;padding-bottom:.5rem;
  border-bottom:1px solid var(--rule);
}
.bom tr.grp:hover td{background:var(--sunk);}
.bom .ib{
  font-family:var(--f-m);font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);border:1px solid var(--rule);padding:.1rem .35rem;border-radius:3px;
  white-space:nowrap;font-weight:400;
}
.bom .nt{
  display:block;margin-top:.5rem;font-size:.82rem;color:var(--audio);
  border-left:2px solid color-mix(in srgb,var(--audio) 45%,transparent);padding-left:.6rem;max-width:40ch;
}
.bom.cmp td{font-size:.88rem;}
.bom-wrap{overflow-x:auto;}
@media(max-width:760px){.bom .why,.bom th.why-h{display:none;}}

.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:1rem;}
.panel{background:var(--paper-2);border:1px solid var(--rule);border-radius:5px;padding:1.4rem 1.3rem;}
.panel h3{margin-bottom:.9rem;}
.panel ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:.65rem;}
.panel li{position:relative;padding-left:1.15rem;color:var(--ink-2);font-size:.92rem;line-height:1.55;}
.panel li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border:1px solid var(--video);border-radius:1px;}
.panel.warn li::before{border-color:var(--audio);}

/* ── Capture ────────────────────────────────────────────────────── */
.capture{background:var(--paper-2);border:1px solid var(--rule);border-radius:5px;padding:clamp(1.6rem,3vw,2.4rem);}
.capture-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:2rem;align-items:center;}
@media(max-width:820px){.capture-grid{grid-template-columns:1fr;}}
.capture p{color:var(--ink-2);margin-top:.7rem;max-width:46ch;}
.form{display:flex;gap:.5rem;flex-wrap:wrap;}
.form input{
  flex:1 1 13rem;background:var(--paper);border:1px solid var(--rule);color:var(--ink);
  padding:.7rem .85rem;font-family:var(--f-b);font-size:.95rem;border-radius:3px;
}
.form input:focus{outline:none;border-color:var(--video);}
.form-note{font-size:.82rem;color:var(--muted);margin-top:.7rem;width:100%;}

footer{border-top:1px solid var(--rule);padding:2rem 0 3rem;margin-top:2rem;}
.foot{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;align-items:center;font-size:.84rem;color:var(--muted);}
.disc{font-size:.82rem;color:var(--muted);max-width:60ch;margin-top:.8rem;line-height:1.55;}

.rv{opacity:0;transform:translateY(14px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1);}
.rv.in{opacity:1;transform:none;}
[hidden]{display:none!important;}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important;}
  .rv{opacity:1;transform:none;}
}