:root{
  --bg:#F3F4F6; --surface:#FFFFFF; --ink:#15171B; --muted:#596069; --line:#DADDE2;
  --rust:#7A5C0C; --rust-soft:#F5ECD2; --gold:#C9A22A; --gold-ink:#7A5C0C; --steel:#616266; --on-gold:#15171B; --err:#B42318;
  --screen:#0E1013; --screen-2:#171A1F; --screen-ink:#D9DCE0; --rec:#FF4A3D;
  --display:"Barlow Semi Condensed","Arial Narrow",Arial,sans-serif;
  --body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --wrap:1160px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#111317; --surface:#1A1D22; --ink:#ECEDEF; --muted:#A3A8AF; --line:#2B2F36;
    --rust:#E0B840; --rust-soft:#3A3016; --gold:#D4AC32; --gold-ink:#E0B840; --steel:#9A9CA1; --err:#FF8A7A;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#111317; --surface:#1A1D22; --ink:#ECEDEF; --muted:#A3A8AF; --line:#2B2F36;
  --rust:#E0B840; --rust-soft:#3A3016; --gold:#D4AC32; --gold-ink:#E0B840; --steel:#9A9CA1; --err:#FF8A7A;
  color-scheme:dark;
}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:20;background:var(--surface)}
.wrap{max-width:var(--wrap);margin:0 auto}
a{color:inherit}
h1,h2,h3{font-family:var(--display);line-height:1.05;margin:0;text-wrap:balance;letter-spacing:-.005em}
h2{font-size:clamp(2rem,4.2vw,2.9rem);font-weight:700}
h3{font-size:1.45rem;font-weight:700}
p{margin:0}
.eyebrow{font-family:var(--mono);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--rust)}
.lede{color:var(--muted);max-width:62ch;font-size:1.05rem}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:4px}

/* header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:15;background:color-mix(in srgb,var(--surface) 92%,transparent);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);margin-left:calc(-1 * max(16px,env(safe-area-inset-left,0px)));margin-right:calc(-1 * max(16px,env(safe-area-inset-right,0px)));
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.top .wrap{display:flex;align-items:center;gap:24px;padding-block:10px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand img{height:58px;width:auto;display:block}
.logo-d{display:none!important}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .logo-l{display:none!important}:root:not([data-theme="light"]) .logo-d{display:block!important}}
:root[data-theme="dark"] .logo-l{display:none!important}
:root[data-theme="dark"] .logo-d{display:block!important}
.nav{display:flex;gap:22px;margin-left:auto;font-size:.95rem}
.nav a{text-decoration:none;color:var(--muted);font-weight:500}
.nav a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:8px;font:600 .95rem/1 var(--body);padding:13px 18px;border-radius:6px;text-decoration:none;border:1.5px solid transparent;cursor:pointer;white-space:nowrap}
.btn-primary{background:var(--gold);color:var(--on-gold)}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:var(--surface)}
.btn-ghost:hover{border-color:var(--ink)}
.top .btn{padding:10px 14px}
@media (max-width:860px){.nav{display:none}.top .btn{margin-left:auto}}

/* hero */
.hero{padding-block:clamp(40px,7vw,84px) clamp(40px,6vw,72px)}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center}
.hero h1{font-size:clamp(2.6rem,6.4vw,4.6rem);font-weight:700}
.hero h1 em{font-style:normal;color:var(--rust)}
.hero .hero-copy{display:grid;gap:22px;min-width:0}
.hero .ctas{display:flex;flex-wrap:wrap;gap:12px}
.hero .lines{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.9rem;color:var(--muted)}
.hero .lines span::before{content:"";display:inline-block;width:7px;height:7px;background:var(--gold);margin-right:8px;transform:translateY(-1px) rotate(45deg)}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr}}

/* monitor wall */
.wall{background:var(--screen);border-radius:10px;padding:10px;box-shadow:0 30px 60px -30px rgba(10,12,16,.55);min-width:0}
.wall-head{display:flex;justify-content:space-between;align-items:center;gap:10px;font-family:var(--mono);font-size:.7rem;color:#8C929B;padding:4px 6px 10px;letter-spacing:.06em}
.wall-head b{color:var(--screen-ink);font-weight:500}
.grid4{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.cam{position:relative;aspect-ratio:16/10;max-width:100%;border-radius:4px;overflow:hidden;background:var(--screen-2)}
.cam canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.cam .lbl{position:absolute;left:8px;top:7px;font-family:var(--mono);font-size:.66rem;color:var(--screen-ink);letter-spacing:.05em;text-shadow:0 1px 2px #000}
.cam .ts{position:absolute;left:8px;bottom:6px;font-family:var(--mono);font-size:.62rem;color:#B9BEC5;font-variant-numeric:tabular-nums;text-shadow:0 1px 2px #000}
.cam .rec{position:absolute;right:8px;top:7px;font-family:var(--mono);font-size:.62rem;color:var(--screen-ink);display:flex;align-items:center;gap:5px}
.cam .rec i{width:7px;height:7px;border-radius:50%;background:var(--rec);animation:blink 1.4s steps(2,start) infinite}
@keyframes blink{to{visibility:hidden}}
.wall-foot{display:flex;flex-wrap:wrap;gap:6px 16px;font-family:var(--mono);font-size:.66rem;color:#8C929B;padding:10px 6px 2px}
.wall-foot span b{color:var(--gold);font-weight:500}

/* sections */
section{padding-block:clamp(56px,8vw,96px)}
.sec-head{display:grid;gap:14px;margin-bottom:clamp(28px,4vw,44px)}
.services{border-top:1px solid var(--line)}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:28px 26px;display:grid;gap:14px;align-content:start;min-width:0}
.svc .tag{font-family:var(--mono);font-size:.72rem;color:var(--gold-ink);letter-spacing:.08em;text-transform:uppercase}
.svc p{color:var(--muted)}
.svc ul{margin:4px 0 0;padding:0;list-style:none;display:grid;gap:9px;font-size:.95rem}
.svc li{padding-left:18px;position:relative}
.svc li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:2px;background:var(--rust)}
@media (max-width:900px){.svc-grid{grid-template-columns:1fr}}

/* security band */
.band{background:var(--screen);color:var(--screen-ink);margin-left:calc(-1 * max(16px,env(safe-area-inset-left,0px)));margin-right:calc(-1 * max(16px,env(safe-area-inset-right,0px)));
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.band .eyebrow{color:#F2B630}
.band .lede{color:#A3A8AF}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#2B2F36;border:1px solid #2B2F36;border-radius:8px;overflow:hidden}
.band-item{background:#15181D;padding:24px 22px;display:grid;gap:10px;align-content:start;min-width:0}
.band-item h3{color:#fff;font-size:1.3rem}
.band-item p{color:#A3A8AF;font-size:.93rem}
.spec{font-family:var(--mono);font-size:.68rem;color:#F2B630;letter-spacing:.05em}
.comply{margin-top:22px;display:flex;gap:16px;align-items:flex-start;border:1px solid #3A3F47;border-radius:8px;padding:18px 20px;max-width:880px}
.comply strong{color:#fff}
.comply p{color:#A3A8AF;font-size:.93rem}
.comply .badge{flex:none;font-family:var(--mono);font-size:.66rem;border:1px solid #F2B630;color:#F2B630;border-radius:4px;padding:4px 7px;letter-spacing:.06em}
@media (max-width:980px){.band-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.band-grid{grid-template-columns:1fr}.comply{flex-direction:column}}

/* recent installations */
.work-grid{display:grid;grid-template-columns:100fr 64fr;gap:16px}
.work-grid figure{margin:0;display:grid;gap:10px;min-width:0}
.work-grid img{display:block;width:100%;max-width:100%;border-radius:8px;object-fit:cover;background:var(--screen-2)}
.work-grid figure:first-child img{aspect-ratio:1/1}
.work-grid figure:last-child img{aspect-ratio:64/100}
.work-grid figcaption{font-size:.9rem;color:var(--muted)}
.work-grid figcaption b{color:var(--ink);font-weight:600}
@media (max-width:700px){.work-grid{grid-template-columns:1fr}.work-grid figure:last-child img{aspect-ratio:4/5}}

/* products */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.prod{background:var(--surface);border:1px solid var(--line);border-radius:8px;overflow:hidden;display:flex;flex-direction:column;min-width:0}
.prod img{display:block;width:100%;aspect-ratio:4/5;object-fit:cover;max-width:100%;background:var(--screen-2)}
.prod-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.prod .type{font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--gold-ink)}
.prod h3{font-size:1.3rem}
.prod .model{font-family:var(--mono);font-size:.74rem;color:var(--muted)}
.prod ul{margin:0;padding:0;list-style:none;display:grid;gap:6px;font-size:.92rem;color:var(--muted)}
.prod li{padding-left:16px;position:relative}
.prod li::before{content:"";position:absolute;left:0;top:.6em;width:7px;height:7px;background:var(--gold);transform:rotate(45deg)}
.prod .ask{margin-top:auto;align-self:flex-start;font-weight:600;font-size:.92rem;color:var(--ink);text-decoration:none;border-bottom:2px solid var(--gold);padding-bottom:2px}
.prod .ask:hover{color:var(--gold-ink)}
.prod-note{margin-top:18px;color:var(--muted);font-size:.92rem}
@media (max-width:900px){.prod-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.prod-grid{grid-template-columns:1fr}}

/* sectors */
.sectors-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.sector{padding:22px 20px 22px 0;border-bottom:1px solid var(--line);display:grid;gap:6px;min-width:0}
.sector h3{font-size:1.2rem}
.sector p{color:var(--muted);font-size:.92rem;padding-right:12px}
@media (max-width:900px){.sectors-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.sectors-grid{grid-template-columns:1fr}}

/* process */
.process{background:var(--surface);border-block:1px solid var(--line);margin-left:calc(-1 * max(16px,env(safe-area-inset-left,0px)));margin-right:calc(-1 * max(16px,env(safe-area-inset-right,0px)));
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:s;list-style:none;margin:0;padding:0}
.steps li{counter-increment:s;display:grid;gap:8px;align-content:start;padding-top:18px;border-top:3px solid var(--line);min-width:0}
.steps li:first-child{border-top-color:var(--rust)}
.steps li::before{content:counter(s,decimal-leading-zero);font-family:var(--mono);font-size:.78rem;color:var(--rust)}
.steps h3{font-size:1.2rem}
.steps p{color:var(--muted);font-size:.92rem}
@media (max-width:980px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}

/* why */
.why-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,5vw,64px);align-items:start}
.why-list{display:grid;gap:22px}
.why-list div{display:grid;gap:4px;padding-left:18px;border-left:2px solid var(--gold)}
.why-list p{color:var(--muted)}
@media (max-width:860px){.why-grid{grid-template-columns:1fr}}

/* contact */
.contact{border-top:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(24px,5vw,56px);align-items:start}
.cards{display:grid;gap:12px}
.ccard{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:16px 18px;display:flex;justify-content:space-between;align-items:center;gap:12px;min-width:0}
.ccard .k{font-family:var(--mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.ccard .v{font-weight:600;font-size:1.08rem;user-select:all;word-break:break-all;font-variant-numeric:tabular-nums}
.copy{font:500 .8rem var(--body);border:1px solid var(--line);background:transparent;color:var(--ink);border-radius:5px;padding:7px 10px;cursor:pointer;flex:none}
.copy:hover{border-color:var(--ink)}
form{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:clamp(20px,3vw,30px);display:grid;gap:16px;min-width:0}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:560px){.row{grid-template-columns:1fr}.contact-grid{grid-template-columns:1fr}}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr}}
label{display:grid;gap:6px;font-size:.88rem;font-weight:500}
input,select,textarea{font:inherit;font-size:.97rem;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:11px 12px;width:100%}
textarea{min-height:96px;resize:vertical}
fieldset{border:0;padding:0;margin:0;display:grid;gap:8px}
legend{font-size:.88rem;font-weight:500;margin-bottom:6px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips label{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);border-radius:999px;padding:7px 12px;font-weight:500;cursor:pointer;background:var(--bg)}
.chips input{width:auto;accent-color:var(--rust)}
.chips label:has(input:checked){border-color:var(--rust);background:var(--rust-soft)}
.out{display:grid;gap:12px;border-top:1px dashed var(--line);padding-top:16px}
.out pre{white-space:pre-wrap;font-family:var(--mono);font-size:.8rem;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:12px;margin:0;max-height:260px;overflow:auto}
.out .acts{display:flex;flex-wrap:wrap;gap:10px}
.note{font-size:.85rem;color:var(--muted)}
.err{color:var(--err);font-size:.88rem}

footer{padding-block:32px 40px;border-top:1px solid var(--line);font-size:.88rem;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;align-items:center}
footer img{height:44px;width:auto}

@media (prefers-reduced-motion:reduce){.cam .rec i{animation:none}}

/* ---------- multi-page additions ---------- */
/* mobile menu */
.menu-btn{display:none;margin-left:auto;font:600 .92rem var(--body);background:var(--surface);color:var(--ink);border:1.5px solid var(--line);border-radius:6px;padding:9px 12px;cursor:pointer}
.nav a[aria-current="page"]{color:var(--ink);box-shadow:inset 0 -2px 0 var(--gold)}
@media (max-width:960px){
  .menu-btn{display:inline-flex}
  .top .btn{margin-left:0}
  .top .wrap{flex-wrap:wrap;gap:12px}
  .top.open .nav{display:flex;flex-direction:column;gap:0;width:100%;order:5;margin:0;padding-block:6px 10px;border-top:1px solid var(--line)}
  .top.open .nav a{padding:12px 2px;border-bottom:1px solid var(--line);font-size:1rem;color:var(--ink)}
  .top.open .nav a[aria-current="page"]{box-shadow:none;color:var(--gold-ink)}
  .nav{display:none}
}
@media (min-width:961px){.nav{display:flex}}
@media (max-width:420px){.top .btn{display:none}}

/* four service areas on the home page */
.area-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.area{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:24px 22px;display:flex;flex-direction:column;gap:12px;min-width:0;text-decoration:none;color:inherit;transition:border-color .15s}
.area:hover{border-color:var(--gold)}
.area .tag{font-family:var(--mono);font-size:.7rem;color:var(--gold-ink);letter-spacing:.08em;text-transform:uppercase}
.area h3{font-size:1.4rem}
.area p{color:var(--muted);font-size:.95rem}
.area ul{margin:0;padding:0;list-style:none;display:grid;gap:7px;font-size:.92rem}
.area li{padding-left:16px;position:relative}
.area li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:2px;background:var(--gold)}
.area .more{margin-top:auto;padding-top:6px;font-weight:600;font-size:.92rem;color:var(--gold-ink)}
@media (max-width:1040px){.area-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.area-grid{grid-template-columns:1fr}}
.band-more{margin-top:22px}
.band .btn-ghost{background:transparent;color:#fff;border-color:#3A3F47}
.band .btn-ghost:hover{border-color:#fff}

/* service page hero */
.page-hero{padding-block:clamp(36px,6vw,72px) clamp(28px,4vw,48px);border-bottom:1px solid var(--line)}
.page-hero .wrap{display:grid;gap:18px}
.crumbs{font-size:.85rem;color:var(--muted)}
.crumbs a{color:var(--muted)}
.page-hero h1{font-size:clamp(2.4rem,5.6vw,4rem);font-weight:700;max-width:18ch}
.page-hero .ctas{display:flex;flex-wrap:wrap;gap:12px}

/* what we offer */
.offer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0 28px}
.offer{padding:20px 0;border-top:1px solid var(--line);display:grid;gap:6px;align-content:start;min-width:0}
.offer h3{font-size:1.2rem}
.offer p{color:var(--muted);font-size:.94rem}
@media (max-width:900px){.offer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.offer-grid{grid-template-columns:1fr}}

/* packages */
.pk-group + .pk-group{margin-top:clamp(36px,5vw,56px)}
.pk-group > h3{font-size:1.5rem;margin-bottom:6px}
.pk-group > p{color:var(--muted);margin-bottom:18px;max-width:62ch}
.pk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pk-grid.two{grid-template-columns:repeat(2,1fr)}
.pk-grid.one{grid-template-columns:minmax(0,640px)}
.pk{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:24px 22px;display:flex;flex-direction:column;gap:12px;min-width:0}
.pk .for{font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--gold-ink)}
.pk h4{font-family:var(--display);font-size:1.45rem;line-height:1.1;margin:0}
.pk ul{margin:0;padding:0;list-style:none;display:grid;gap:7px;font-size:.93rem;color:var(--muted)}
.pk li{padding-left:16px;position:relative}
.pk li::before{content:"";position:absolute;left:0;top:.6em;width:7px;height:7px;background:var(--gold);transform:rotate(45deg)}
.pk .price{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:.9rem;color:var(--muted)}
.pk .price b{display:block;font-family:var(--display);font-size:1.5rem;color:var(--ink);font-variant-numeric:tabular-nums}
.pk .btn{align-self:flex-start}
@media (max-width:980px){.pk-grid,.pk-grid.two{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.pk-grid,.pk-grid.two{grid-template-columns:1fr}}

/* comparison (new vs refurbished, one-off vs retainer) */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.compare > div{border:1px solid var(--line);border-radius:8px;padding:22px;display:grid;gap:10px;align-content:start;min-width:0;background:var(--surface)}
.compare h3{font-size:1.3rem}
.compare ul{margin:0;padding-left:18px;color:var(--muted);display:grid;gap:6px;font-size:.94rem}
@media (max-width:640px){.compare{grid-template-columns:1fr}}

/* FAQ */
.faq{display:grid;gap:0;max-width:820px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--gold-ink);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--muted);margin-top:10px;max-width:68ch}

/* closing call to action */
.cta-band{background:var(--screen);color:var(--screen-ink);margin-left:calc(-1 * max(16px,env(safe-area-inset-left,0px)));margin-right:calc(-1 * max(16px,env(safe-area-inset-right,0px)));
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.cta-band .wrap{display:flex;flex-wrap:wrap;gap:20px 40px;align-items:center;justify-content:space-between}
.cta-band h2{color:#fff;font-size:clamp(1.8rem,3.6vw,2.5rem);max-width:22ch}
.cta-band p{color:#A3A8AF;margin-top:8px}
.cta-band .ctas{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:#3A3F47}
.alt{background:var(--surface);border-block:1px solid var(--line);margin-left:calc(-1 * max(16px,env(safe-area-inset-left,0px)));margin-right:calc(-1 * max(16px,env(safe-area-inset-right,0px)));
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.alt .pk,.alt .compare > div{background:var(--bg)}
footer nav{display:flex;flex-wrap:wrap;gap:8px 18px}
footer nav a{color:var(--muted);text-decoration:none}
footer nav a:hover{color:var(--ink)}