/* OpenTAC marketing — shared style system (signal-teal, dark, mono-accent).
   One stylesheet for the whole multipage site so every page stays on-brand. */
:root{
  --bg:#0a0b0d;
  --bg-raised:#101216;
  --bg-card:#0e1014;
  --ink:#e7eaf0;
  --ink-mid:#aab2c0;
  --ink-dim:#7c8595;
  --line:#1b1f26;
  --line-bright:#272d37;
  --accent:#3fd9c6;        /* OpenTAC signal-teal — track-trail phosphor */
  --accent-deep:#1f9e90;
  --accent-glow:rgba(63,217,198,.14);
  --warn:#e5484d;
  /* major-category accents — mirror the app's taxonomy.MAJOR_COLOR */
  --c-mil:#7E8B3C; --c-gov:#3B4877; --c-coast:#F76808; --c-border:#7C3AED;
  --c-sar:#F2A516; --c-hems:#1C5EE0; --c-ambu:#0EA5A4; --c-pol:#E6CB1E;
  --c-fire:#DC2626; --c-life:#16A34A; --c-res:#5C6A7B; --c-emrg:#DB2777;
  --c-sat:#9AA7B4;
  --maxw:1120px;
  --radius:10px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;color:var(--ink);
  /* 40px square grid across the WHOLE page (not just the hero), painted over the
     base colour. Sections/cards sit on top with their own fills. */
  background:
    linear-gradient(transparent 0 39px,var(--line) 39px 40px) 0 0/100% 40px,
    linear-gradient(90deg,transparent 0 39px,var(--line) 39px 40px) 0 0/40px 100%,
    var(--bg);
  font-family:"Inter",system-ui,-apple-system,sans-serif;
  font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.mono{font-family:"JetBrains Mono",ui-monospace,monospace}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.08}

.eyebrow{font-family:"JetBrains Mono",monospace;font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--accent)}
.eyebrow.muted{color:var(--ink-dim)}

/* ── top nav ── */
header.nav{position:sticky;top:0;z-index:60;background:rgba(10,11,13,.78);backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid var(--line)}
.nav-row{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;font-size:18px}
.brand .tick{width:11px;height:11px;border-radius:2px;background:var(--accent);box-shadow:0 0 12px var(--accent-glow);transform:rotate(45deg)}
.brand small{font-family:"JetBrains Mono",monospace;font-size:10px;font-weight:600;letter-spacing:.18em;color:var(--ink-dim);border:1px solid var(--line-bright);border-radius:4px;padding:2px 6px;margin-left:4px}
nav.links{display:flex;gap:30px;align-items:center}
nav.links a{color:var(--ink-mid);font-size:14.5px;font-weight:500;transition:color .15s}
nav.links a:hover,nav.links a.active{color:var(--ink)}
nav.links a.active{color:var(--accent)}
.nav-cta{display:flex;align-items:center;gap:14px}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:14.5px;border-radius:8px;padding:9px 16px;border:1px solid transparent;cursor:pointer;transition:all .15s;font-family:inherit}
.btn-primary{background:var(--accent);color:#04201c;box-shadow:0 0 0 1px var(--accent-deep)}
.btn-primary:hover{background:#56e7d6;transform:translateY(-1px)}
.btn-ghost{border-color:var(--line-bright);color:var(--ink)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.menu-toggle{display:none;background:none;border:1px solid var(--line-bright);border-radius:8px;color:var(--ink);padding:7px 10px;cursor:pointer}

/* ── section scaffold ── */
section{padding:96px 0;border-top:1px solid var(--line)}
section:first-of-type{border-top:none}
.sec-head{max-width:720px;margin-bottom:48px}
.sec-head h2{font-size:36px;margin-top:14px}
.sec-head p{color:var(--ink-mid);font-size:18px;margin-top:16px}

/* ── page hero (compact, for inner pages) ── */
.phead{padding:72px 0 8px;background:radial-gradient(900px 380px at 80% -20%,var(--accent-glow),transparent 60%)}
.phead h1{font-size:clamp(34px,5vw,54px);margin-top:18px;max-width:18ch}
.phead p.lede{color:var(--ink-mid);font-size:clamp(17px,2vw,20px);max-width:64ch;margin:20px 0 0}

/* ── home hero ── */
.hero{padding:90px 0 40px;background:radial-gradient(900px 420px at 78% -8%,var(--accent-glow),transparent 60%)}
.hero-inner{position:relative}
.hero h1{font-size:clamp(38px,6vw,68px);margin-top:22px;max-width:15ch}
.hero h1 .hl{color:var(--accent)}
.hero p.lede{color:var(--ink-mid);font-size:clamp(18px,2.2vw,21px);max-width:62ch;margin:24px 0 0}
.hero-cta{display:flex;gap:14px;margin-top:36px;flex-wrap:wrap}
.hero-meta{display:flex;gap:28px;flex-wrap:wrap;margin-top:40px;font-family:"JetBrains Mono",monospace;font-size:12.5px;color:var(--ink-dim)}
.hero-meta b{color:var(--ink);font-weight:600}

/* ── real screenshot ── */
.shotwrap{padding:40px 0 0}
figure.shot{margin:0;border:1px solid var(--line-bright);border-radius:14px;overflow:hidden;background:#0c0e12;box-shadow:0 40px 120px -50px rgba(0,0,0,.9),0 0 0 1px rgba(255,255,255,.01) inset}
figure.shot img{display:block;width:100%;height:auto}
figure.shot figcaption{font-family:"JetBrains Mono",monospace;font-size:12.5px;color:var(--ink-dim);padding:13px 16px;border-top:1px solid var(--line);line-height:1.6}
figure.shot figcaption .ok{color:var(--accent)}

/* ── pillars ── */
.pillars{display:grid;gap:0}
.pillar{display:grid;grid-template-columns:160px 1fr;gap:40px;padding:38px 0;border-top:1px solid var(--line)}
.pillar:first-child{border-top:none}
.pillar .lab{font-family:"JetBrains Mono",monospace;font-size:12px;letter-spacing:.18em;color:var(--accent);padding-top:6px}
.pillar h3{font-size:23px;margin-bottom:10px}
.pillar p{color:var(--ink-mid);margin:0;max-width:64ch}
.pillar .detail{margin-top:14px;font-family:"JetBrains Mono",monospace;font-size:12.5px;color:var(--ink-dim)}
@media (max-width:720px){.pillar{grid-template-columns:1fr;gap:12px}}

/* ── taxonomy / category cards ── */
.tax{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media (max-width:760px){.tax{grid-template-columns:1fr}}
.tax-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-card);padding:18px 20px}
.tax-card .th{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.tax-card .th .dot{width:10px;height:10px;border-radius:3px;flex:none}
.tax-card .th b{font-size:15px;font-weight:600;letter-spacing:-.01em}
.tax-card .th code{margin-left:auto;font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--ink-dim)}
.tax-card p{margin:0;font-size:13.5px;color:var(--ink-mid);line-height:1.55}

/* ── full category detail (categories page) ── */
.cat{border:1px solid var(--line);border-radius:14px;background:var(--bg-card);padding:26px 28px;margin-top:18px;border-left:3px solid var(--cc,var(--accent))}
.cat .ch{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.cat .ch .dot{width:12px;height:12px;border-radius:3px;flex:none;align-self:center}
.cat .ch h3{font-size:22px}
.cat .ch code{font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--ink-dim);border:1px solid var(--line-bright);border-radius:4px;padding:2px 7px}
.cat .ch .plat{margin-left:auto;font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--ink-dim)}
.cat>p{color:var(--ink-mid);font-size:15px;margin:12px 0 16px;max-width:76ch}
.subcats{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 24px;list-style:none;margin:0;padding:0}
@media (max-width:680px){.subcats{grid-template-columns:1fr}}
.subcats li{font-size:13.5px;color:var(--ink-mid);padding:7px 0;border-top:1px solid var(--line);display:flex;gap:10px;align-items:baseline}
.subcats li .g{font-family:"JetBrains Mono",monospace;color:var(--accent);flex:none;width:1.4em;text-align:center}
.subcats li b{color:var(--ink);font-weight:600}
.subcats li .pc{margin-left:auto;font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--ink-dim);flex:none}

/* ── overlay cards ── */
.overlays{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:760px){.overlays{grid-template-columns:1fr}}
.ocard{border:1px solid var(--line);border-radius:14px;background:var(--bg-card);padding:28px;position:relative;overflow:hidden}
.ocard .otag{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.16em;color:var(--ink-dim);text-transform:uppercase}
.ocard h3{font-size:22px;margin:12px 0 12px}
.ocard p{color:var(--ink-mid);font-size:15px;margin:0 0 14px}
.ocard .off{display:inline-flex;align-items:center;gap:7px;font-family:"JetBrains Mono",monospace;font-size:11.5px;color:var(--accent);border:1px solid var(--line-bright);border-radius:6px;padding:5px 10px}
.ocard ul{margin:14px 0 0;padding:0;list-style:none}
.ocard li{font-size:13.5px;color:var(--ink-mid);padding:6px 0 6px 20px;position:relative;border-top:1px solid var(--line)}
.ocard li::before{content:"›";position:absolute;left:2px;color:var(--accent)}

/* ── steps ── */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media (max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}
.step{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-card);padding:22px}
.step .n{font-family:"JetBrains Mono",monospace;font-size:13px;color:var(--accent);font-weight:600}
.step h3{font-size:17px;margin:12px 0 8px}
.step p{margin:0;font-size:14px;color:var(--ink-mid)}

/* ── split rows ── */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
@media (max-width:820px){.split{grid-template-columns:1fr;gap:28px}}
.split h3{font-size:27px;margin-bottom:14px}
.split p{color:var(--ink-mid);margin:0 0 14px}
.feat-list{list-style:none;margin:18px 0 0;padding:0}
.feat-list li{padding:12px 0;border-top:1px solid var(--line);display:flex;gap:12px;font-size:15px;color:var(--ink-mid)}
.feat-list li b{color:var(--ink);font-weight:600}
.feat-list li .ic{color:var(--accent);font-family:"JetBrains Mono",monospace;flex:none}
.panel{border:1px solid var(--line-bright);border-radius:12px;overflow:hidden;background:#0c0e12;font-family:"JetBrains Mono",monospace;font-size:12.5px}
.panel .ph{padding:10px 14px;border-bottom:1px solid var(--line);color:var(--ink-dim);background:#0a0c0f}
.panel .pb{padding:14px;color:var(--ink-mid);line-height:1.9}
.panel .pb .k{color:var(--accent)}
.panel .pb .d{color:var(--ink-dim)}
.panel .pb .w{color:var(--warn)}

/* ── faq ── */
.faq{display:grid;gap:0;max-width:880px}
.faq details{border-top:1px solid var(--line);padding:4px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:20px 40px 20px 0;position:relative;font-size:18px;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:18px;font-family:"JetBrains Mono",monospace;font-size:22px;font-weight:400;color:var(--accent);transition:transform .2s}
.faq details[open] summary::after{content:"–"}
.faq summary:hover{color:var(--accent)}
.faq .ans{padding:0 40px 22px 0;color:var(--ink-mid);font-size:15.5px;line-height:1.65}
.faq .ans a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.faq .ans code{font-family:"JetBrains Mono",monospace;font-size:13px;color:var(--ink);background:#0c0e12;border:1px solid var(--line);border-radius:4px;padding:1px 6px}

/* ── cta band ── */
.band{text-align:center}
.band h2{font-size:36px;max-width:18ch;margin:0 auto}
.band p{color:var(--ink-mid);max-width:52ch;margin:18px auto 30px}
.band .install{display:inline-flex;align-items:center;gap:12px;margin-top:6px;font-family:"JetBrains Mono",monospace;font-size:14px;color:var(--ink);border:1px solid var(--line-bright);border-radius:8px;padding:12px 18px;background:#0c0e12}
.band .install .pfx{color:var(--accent)}

/* ── footer ── */
footer{border-top:1px solid var(--line);padding:56px 0 48px;color:var(--ink-dim)}
.foot-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
.foot-brand{max-width:320px}
.foot-brand p{font-size:13.5px;margin:12px 0 0;color:var(--ink-dim)}
.foot-cols{display:flex;gap:64px;flex-wrap:wrap}
.foot-col h4{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);margin:0 0 14px;font-weight:600}
.foot-col a{display:block;color:var(--ink-mid);font-size:14px;padding:5px 0;transition:color .15s}
.foot-col a:hover{color:var(--accent)}
.foot-base{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:48px;padding-top:24px;border-top:1px solid var(--line);font-family:"JetBrains Mono",monospace;font-size:11.5px}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* mobile nav */
@media (max-width:880px){
  nav.links,.nav-cta .btn-ghost{display:none}
  .brand small{display:none}
  .menu-toggle{display:inline-flex}
  nav.links.open{display:flex;flex-direction:column;position:absolute;top:62px;left:0;right:0;background:var(--bg-raised);border-bottom:1px solid var(--line);padding:18px 28px;gap:18px}
}