/* ─────────────────────────────────────────────────────────────
   Northstar Safety Systemz — shared design system (ns.css)
   Space Grotesk · Inter · IBM Plex Mono · Lucide icons
   ───────────────────────────────────────────────────────────── */
:root{
  --navy:#0a1b3d;--navy-2:#0f2a5e;--navy-soft:#13366f;--navy-ink:#071229;
  --blue:#26428F;--blue-2:#3a5bb0;--gold:#e0a53a;--gold-2:#f4c25f;--gold-ink:#96690f;
  --green:#2fae7a;--teal:#37b6c4;--ink:#0c1526;--slate:#5a6b85;--slate-2:#7b8aa3;
  --line:#e6eaf1;--bg:#fff;--bg-soft:#f5f7fb;--bg-tint:#eef2f9;
  --radius:18px;--shadow:0 24px 60px -22px rgba(10,27,61,.32);--shadow-sm:0 10px 30px -14px rgba(10,27,61,.22);
  --maxw:1220px;--sora:'Space Grotesk',system-ui,sans-serif;--inter:'Inter',system-ui,sans-serif;--mono:'IBM Plex Mono',ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;overflow-x:hidden}
body{font-family:var(--inter);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{font-family:var(--sora);line-height:1.12;font-weight:700;letter-spacing:-.025em;color:var(--navy)}
a{text-decoration:none;color:inherit}
img,svg{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-weight:600;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-ink)}
.eyebrow.on-dark{color:var(--gold-2)}
.eyebrow::before{content:"";width:26px;height:2px;background:currentColor;display:inline-block}
.eyebrow.center{justify-content:center}
.btn{position:relative;display:inline-flex;align-items:center;gap:10px;font-family:var(--sora);font-weight:600;font-size:.94rem;padding:15px 28px;border-radius:100px;border:0;cursor:pointer;transition:transform .22s,box-shadow .22s,background .22s,color .22s;white-space:nowrap}
.btn svg{width:18px;height:18px;stroke-width:2}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-2));color:var(--navy);box-shadow:0 14px 30px -10px rgba(224,165,58,.7)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 20px 38px -10px rgba(224,165,58,.9)}
.btn-ghost{background:rgba(255,255,255,.05);color:#fff;border:1.5px solid rgba(255,255,255,.32)}
.btn-ghost:hover{border-color:var(--gold-2);color:var(--gold-2)}
.btn-navy{background:var(--navy);color:#fff}.btn-navy:hover{background:var(--navy-2);transform:translateY(-2px)}
.btn-line{background:#fff;color:var(--navy);border:1.5px solid var(--line)}.btn-line:hover{border-color:var(--navy);transform:translateY(-2px)}
.btn-lg{padding:17px 34px;font-size:1rem}

/* top bar */
.topbar{background:var(--navy-ink);color:#c9d5ee;font-size:.82rem;font-family:var(--mono)}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:9px 24px}
.topbar a{color:#c9d5ee}.topbar a:hover{color:var(--gold-2)}
.topbar .tb-left{display:flex;gap:20px;align-items:center}.topbar .tb-right{display:flex;gap:18px}
.topbar .pill{color:var(--gold-2)}
.topbar a svg{width:14px;height:14px;stroke-width:2;vertical-align:-2px;margin-right:5px;display:inline-block}
@media(max-width:900px){.topbar .tb-left span:not(.pill){display:none}.topbar .tb-right a:last-child{display:none}}

/* nav */
header.nav{position:sticky;top:0;z-index:900;background:rgba(255,255,255,.86);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);transition:.3s}
header.nav.scrolled{box-shadow:0 12px 34px -20px rgba(10,27,61,.4)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:78px}
.logo{display:flex;align-items:center;gap:11px;font-family:var(--sora);font-weight:700;font-size:1.06rem;color:var(--navy);line-height:1.05}
.nsmark{height:40px;width:auto;flex:0 0 auto}
.logo small{display:block;font-family:var(--mono);font-weight:500;font-size:.52rem;letter-spacing:.09em;color:var(--slate);text-transform:uppercase;margin-top:3px;white-space:nowrap}
.logo .brand span{color:var(--gold)}
.menu{display:flex;align-items:center;gap:2px;list-style:none}
.menu>li>a{display:flex;align-items:center;gap:6px;padding:12px 15px;font-family:var(--sora);font-weight:500;font-size:.92rem;border-radius:10px;transition:.2s}
.menu>li>a:hover{color:var(--navy);background:var(--bg-soft)}
.nav-cta .btn{padding:12px 22px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:26px;height:2.5px;background:var(--navy);border-radius:2px}
@media(max-width:1080px){.menu,.nav-cta .btn{display:none}.burger{display:flex}}
.drawer{position:fixed;inset:0;z-index:1000;background:var(--navy);color:#fff;transform:translateX(100%);transition:.35s;padding:26px 24px;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer .d-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px}
.drawer .d-close{background:none;border:0;color:#fff;font-size:2rem;cursor:pointer;line-height:1}
.drawer ul{list-style:none}.drawer li a{display:block;padding:14px 4px;font-family:var(--sora);font-weight:500;border-bottom:1px solid rgba(255,255,255,.12)}
.drawer .d-cta{margin-top:22px;display:grid;gap:12px}

/* page hero (interior) */
.phero{position:relative;background:var(--navy-ink);color:#fff;overflow:hidden;padding:64px 0 74px}
.phero .mesh{position:absolute;inset:0;background:radial-gradient(680px 420px at 82% -10%,rgba(58,91,176,.5),transparent 60%),radial-gradient(560px 460px at 4% 40%,rgba(19,54,111,.55),transparent 62%),linear-gradient(180deg,#0a1b3d,#071229)}
.phero .gridlines{position:absolute;inset:0;opacity:.5;background-image:url("data:image/svg+xml,%3Csvg width='64' height='64' viewBox='0 0 64 64' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23fff' stroke-opacity='0.04'%3E%3Cpath d='M0 32h64M32 0v64'/%3E%3C/g%3E%3C/svg%3E")}
.phero .wrap{position:relative;z-index:2}
.crumb{font-family:var(--mono);font-size:.75rem;letter-spacing:.04em;color:#9fb2d6;margin-bottom:20px}
.crumb a{color:#9fb2d6}.crumb a:hover{color:var(--gold-2)}
.phero h1{font-size:clamp(2.1rem,4.4vw,3.3rem);font-weight:700;letter-spacing:-.03em;color:#fff;max-width:16ch;margin-bottom:20px}
.phero h1 .g{background:linear-gradient(120deg,var(--gold-2),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.phero p.lead{font-size:1.14rem;color:#c6d3ec;max-width:60ch;margin-bottom:28px}
.phero-cta{display:flex;gap:14px;flex-wrap:wrap}
.phero-kpis{display:flex;gap:34px;flex-wrap:wrap;margin-top:40px;padding-top:26px;border-top:1px solid rgba(255,255,255,.13)}
.phero-kpis .k b{font-family:var(--sora);font-weight:700;font-size:1.7rem;background:linear-gradient(120deg,#fff,var(--gold-2));-webkit-background-clip:text;background-clip:text;color:transparent;display:block;line-height:1}
.phero-kpis .k span{font-family:var(--mono);font-size:.72rem;color:#9fb2d6;letter-spacing:.04em;margin-top:6px;display:block}

/* sections */
.section{padding:92px 0}
.section.soft{background:var(--bg-soft)}
.section-head{max-width:760px;margin-bottom:52px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(1.9rem,3.6vw,2.7rem);margin:16px 0 14px}
.section-head p{font-size:1.08rem;color:var(--slate)}
.lead-p{font-size:1.12rem;color:#37435a;max-width:70ch}
.lead-p+.lead-p{margin-top:18px}

/* prose */
.prose p{color:#37435a;margin-bottom:16px;max-width:72ch}
.prose h3{font-size:1.4rem;margin:34px 0 12px}
.prose ul{list-style:none;margin:14px 0 22px}
.prose ul li{position:relative;padding-left:30px;margin-bottom:12px;color:#37435a}
.prose ul li::before{content:"";position:absolute;left:0;top:9px;width:16px;height:16px;border-radius:5px;background:linear-gradient(135deg,var(--gold),var(--gold-2))}

/* two-column intro */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:34px}}

/* feature / step cards */
.cards{display:grid;gap:22px}
.cards.c2{grid-template-columns:repeat(2,1fr)}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.cards.c4{grid-template-columns:repeat(4,1fr)}
@media(max-width:960px){.cards.c3,.cards.c4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.cards.c2,.cards.c3,.cards.c4{grid-template-columns:1fr}}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:#fff;transition:transform .3s,box-shadow .3s,border-color .3s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;left:0;top:0;height:4px;width:0;background:linear-gradient(90deg,var(--gold),var(--gold-2));transition:.35s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card:hover::before{width:100%}
.card .ic{width:54px;height:54px;border-radius:14px;background:linear-gradient(135deg,var(--navy),var(--navy-soft));display:grid;place-items:center;color:var(--gold-2);margin-bottom:16px}
.card .ic svg{width:25px;height:25px;stroke-width:1.7}
.card h3{font-size:1.12rem;margin-bottom:8px}
.card p{font-size:.92rem;color:var(--slate)}
.card .num{font-family:var(--mono);font-size:.8rem;color:var(--gold-ink);font-weight:600;margin-bottom:8px;display:block}

/* method timeline */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:st}
@media(max-width:960px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 20px;position:relative}
.step .no{font-family:var(--mono);font-weight:600;font-size:.78rem;color:var(--gold-ink);letter-spacing:.08em}
.step h4{font-family:var(--sora);font-size:1.04rem;color:var(--navy);margin:10px 0 8px}
.step p{font-size:.88rem;color:var(--slate)}
.step .si{width:44px;height:44px;border-radius:12px;background:var(--bg-tint);display:grid;place-items:center;color:var(--blue);margin-bottom:14px}
.step .si svg{width:22px;height:22px;stroke-width:1.8}

/* stat band */
.band{background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff}
.band .wrap{padding:64px 24px}
.statrow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
@media(max-width:700px){.statrow{grid-template-columns:repeat(2,1fr)}}
.statrow .s b{font-family:var(--sora);font-weight:700;font-size:2.4rem;background:linear-gradient(120deg,#fff,var(--gold-2));-webkit-background-clip:text;background-clip:text;color:transparent;display:block;line-height:1}
.statrow .s span{font-family:var(--mono);font-size:.74rem;color:#9fb2d6;margin-top:8px;display:block;letter-spacing:.03em}

/* checklist grid */
.checks{display:grid;grid-template-columns:1fr 1fr;gap:14px 34px}
@media(max-width:700px){.checks{grid-template-columns:1fr}}
.checks .ck{display:flex;gap:12px;align-items:flex-start;color:#37435a;font-size:.98rem}
.checks .ck svg{width:20px;height:20px;color:var(--green);flex:0 0 20px;margin-top:2px}

/* case study */
.case{background:var(--navy-ink);color:#fff;border-radius:22px;padding:44px;position:relative;overflow:hidden}
.case .eyebrow{color:var(--gold-2)}
.case blockquote{font-family:var(--sora);font-size:1.5rem;line-height:1.4;color:#fff;margin:16px 0 20px;font-weight:500}
.case .attr{font-family:var(--mono);font-size:.8rem;color:#9fb2d6}

/* FAQ */
.faq{max-width:820px;margin:0 auto}
.faq details{border-bottom:1px solid var(--line);padding:20px 0}
.faq summary{font-family:var(--sora);font-weight:600;font-size:1.08rem;color:var(--navy);cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.5rem;color:var(--gold-ink);transition:.2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:#37435a;margin-top:12px}

/* CTA */
.cta{background:linear-gradient(135deg,var(--gold),var(--gold-2));color:var(--navy)}
.cta .wrap{padding:66px 24px;text-align:center}
.cta h2{color:var(--navy);font-size:clamp(1.8rem,3.4vw,2.6rem);margin-bottom:14px}
.cta p{color:#5a4310;max-width:60ch;margin:0 auto 26px;font-size:1.08rem}

/* related */
.rel{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:800px){.rel{grid-template-columns:1fr}}
.rel a{display:flex;align-items:center;gap:14px;padding:20px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:.25s;font-family:var(--sora);font-weight:600;color:var(--navy)}
.rel a:hover{border-color:transparent;box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.rel a .ri{width:42px;height:42px;border-radius:11px;background:var(--bg-tint);display:grid;place-items:center;color:var(--blue);flex:0 0 42px}
.rel a .ri svg{width:21px;height:21px;stroke-width:1.8}
.rel a .go{margin-left:auto;color:var(--gold-ink)}

/* footer */
footer.ft{background:var(--navy-ink);color:#9fb2d6;padding:66px 0 30px;font-size:.9rem}
footer.ft .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;margin-bottom:40px}
@media(max-width:820px){footer.ft .cols{grid-template-columns:1fr 1fr}}
@media(max-width:520px){footer.ft .cols{grid-template-columns:1fr}}
footer.ft h4{font-family:var(--sora);color:#fff;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px;font-weight:600}
footer.ft a{color:#9fb2d6;display:block;padding:5px 0;transition:.2s}footer.ft a:hover{color:var(--gold-2)}
footer.ft .fbrand{display:flex;align-items:center;gap:10px;font-family:var(--sora);font-weight:700;color:#fff;font-size:1.05rem;margin-bottom:14px}
footer.ft .fbrand svg{height:34px}
footer.ft .fbot{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.82rem}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}