/* =========================================================================
   Kesari Aerial Systems — stylesheet
   Dark navy + gold aerospace/defence theme (approved visual identity).
   Fonts: Playfair Display (serif) + IBM Plex (sans/mono).
   Production-readiness pass: fixed mobile nav, engineering-services grid,
   mission tags, deliverables chain, service-page layout, richer footer.
   ========================================================================= */

:root{
  color-scheme:dark;
  --bg:#0A1526; --bg2:#0E2135; --bg3:#132B47; --panel:#0C1B2E; --panel2:#102539;
  --ink:#EAF1F8; --ink2:#C4D2E0; --muted:#8FA1B5; --faint:#8397AD;
  --gold:#C99A2E; --gold-lt:#E6C877; --gold-deep:#A87E22;
  --blue:#3E82AE; --line:rgba(150,178,206,.15); --line-2:rgba(150,178,206,.09);
  --serif:"Playfair Display",Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --wrap:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;overflow-wrap:break-word}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.08;text-wrap:balance;margin:0}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}
::selection{background:var(--gold);color:#0A1526}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:clamp(18px,4vw,40px)}
.eyebrow{font-family:var(--mono);font-size:.73rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--gold-lt);margin:0 0 1rem;display:flex;align-items:center;gap:.7rem}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold);display:inline-block;flex:none}
.lead{font-size:clamp(1.05rem,1.6vw,1.24rem);color:var(--ink2);line-height:1.6;max-width:70ch}
.tag{display:inline-flex;align-items:center;gap:.45rem;font-family:var(--mono);font-size:.64rem;
  letter-spacing:.14em;text-transform:uppercase;color:var(--gold-lt);
  border:1px solid rgba(230,200,119,.3);border-radius:2px;padding:.28rem .66rem}
.g{color:var(--gold-lt)}

/* skip link */
.skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--gold);color:#0A1526;
  padding:.6rem 1rem;border-radius:0 0 4px 0;font-weight:600;font-size:.9rem}
.skip:focus{left:0}

/* ---------- accessibility: focus ---------- */
:focus:not(:focus-visible){outline:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,
textarea:focus-visible,.cstep:focus-visible,.pdot:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--gold-lt);outline-offset:3px;border-radius:3px}

/* ---------- NAV ---------- */
header.nav{position:fixed;top:env(safe-area-inset-top,0px);left:0;right:0;z-index:60;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s}
header.nav.solid{background:rgba(9,19,34,.9);backdrop-filter:blur(11px);border-bottom:1px solid var(--line)}
.navrow{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-block:13px}
.brand{display:flex;align-items:center;gap:11px;flex:none;position:relative;z-index:80}
.brand img{height:42px;width:auto;filter:drop-shadow(0 1px 3px rgba(0,0,0,.5))}
.brand .bt{font-family:var(--serif);font-weight:700;font-size:.95rem;letter-spacing:.02em;white-space:nowrap;line-height:1}
.brand .bt span{font-family:var(--mono);font-size:.55rem;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;display:block;margin-top:3px;white-space:nowrap}
nav.links{display:flex;align-items:center;gap:1.25rem}
nav.links a{font-size:.9rem;color:var(--ink2);letter-spacing:.01em;transition:color .2s;white-space:nowrap;position:relative}
nav.links a:hover{color:var(--gold-lt)}
nav.links a.active{color:var(--gold-lt)}
nav.links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--gold)}
.btn{font-family:var(--sans);font-size:.9rem;font-weight:600;letter-spacing:.02em;border-radius:2px;
  padding:.62rem 1.15rem;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;cursor:pointer;border:1px solid transparent;transition:all .2s;white-space:normal;text-align:center;min-height:40px}
.btn-gold{background:var(--gold);color:#0A1526}
.btn-gold:hover{background:var(--gold-lt)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-lt)}
.navtoggle{display:none;background:none;border:1px solid var(--line);border-radius:2px;color:var(--ink);
  width:44px;height:44px;cursor:pointer;align-items:center;justify-content:center;position:relative;z-index:80}
.navtoggle svg{width:20px;height:20px;display:block}
.navtoggle .ic-close{display:none}
.navtoggle[aria-expanded="true"] .ic-open{display:none}
.navtoggle[aria-expanded="true"] .ic-close{display:block}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:clamp(560px,86vh,820px);display:flex;align-items:flex-end;
  padding-top:130px;padding-bottom:clamp(2.4rem,5vw,4rem);overflow:hidden;
  background:
    linear-gradient(90deg,rgba(8,17,30,.97) 0%,rgba(8,17,30,.9) 34%,rgba(8,17,30,.5) 64%,rgba(8,17,30,.62) 100%),
    linear-gradient(0deg,rgba(8,17,30,.98) 3%,rgba(8,17,30,.15) 42%),
    radial-gradient(120% 80% at 74% 34%,rgba(46,90,138,.28),rgba(8,17,30,0) 58%),
    #0A1526;
  background-repeat:no-repeat;background-position:center right;background-size:cover}
.hero-photo{position:absolute;inset:0;z-index:0;width:100%;height:100%;object-fit:cover;object-position:center right}
.hero::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(90deg,rgba(8,17,30,.97) 0%,rgba(8,17,30,.9) 34%,rgba(8,17,30,.5) 64%,rgba(8,17,30,.62) 100%),
    linear-gradient(0deg,rgba(8,17,30,.98) 3%,rgba(8,17,30,.12) 46%)}
.hero .wrap{width:100%;position:relative;z-index:2}
.hero-in{max-width:50rem}
.hero h1{font-size:clamp(2.3rem,5.6vw,4.3rem);font-weight:800;letter-spacing:-.01em;margin-bottom:1.25rem}
.hero-sub{font-size:clamp(1rem,1.5vw,1.18rem);color:var(--ink2);max-width:62ch;line-height:1.55;margin-bottom:1.1rem}
.hero-sub2{font-size:.95rem;color:var(--muted);max-width:62ch;line-height:1.55;margin:0 0 1.9rem}
.hero-cta{display:flex;flex-wrap:wrap;gap:.8rem;margin-bottom:2.4rem}
.hero-cta .btn{padding:.85rem 1.5rem;font-size:.98rem}
.cred{display:flex;flex-wrap:wrap;gap:.55rem 1.4rem;border-top:1px solid var(--line);padding-top:1.2rem}
.cred span{font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;color:var(--muted);display:flex;align-items:center;gap:.55rem}
.cred span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--gold);flex:none}

/* ---------- SECTIONS ---------- */
section{padding-block:clamp(2.7rem,5.3vw,4.6rem);position:relative;scroll-margin-top:72px}
.sec-head{max-width:72ch;margin-bottom:clamp(1.4rem,2.8vw,2.1rem)}
.sec-head h2{font-size:clamp(1.8rem,3.8vw,2.7rem);margin-bottom:.9rem}
.band{background:
    linear-gradient(0deg,var(--bg2),var(--bg2)),
    repeating-linear-gradient(90deg,transparent 0 63px,var(--line-2) 63px 64px),
    repeating-linear-gradient(0deg,transparent 0 63px,var(--line-2) 63px 64px)}

/* ---------- HOW WE CAN WORK WITH YOU ---------- */
.ways{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.waycard{display:flex;flex-direction:column;background:linear-gradient(180deg,rgba(201,154,46,.05),var(--panel));
  border:1px solid var(--line);border-radius:5px;padding:1.7rem;transition:border-color .2s,transform .18s}
.waycard:hover{border-color:var(--gold);transform:translateY(-3px)}
.waycard .wnum{font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;color:var(--gold-lt)}
.waycard h3{font-size:1.28rem;color:var(--ink);margin:.7rem 0 .55rem}
.waycard p{color:var(--ink2);font-size:.95rem;flex:1}
.waylink{margin-top:1.1rem;font-family:var(--mono);font-size:.78rem;letter-spacing:.04em;color:var(--gold-lt);
  display:inline-flex;align-items:center;gap:.45rem;min-height:44px}
.waylink:hover{color:var(--gold-lt);text-decoration:underline;text-underline-offset:3px}

/* ---------- CAPABILITIES CHAIN ---------- */
.chain{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem}
.cstep{flex:1 1 150px;min-width:130px;text-align:left;background:var(--panel);border:1px solid var(--line);
  border-top:2px solid var(--line);border-radius:3px;padding:.85rem .8rem;cursor:pointer;color:var(--ink);
  transition:border-color .2s,background .2s,transform .15s}
.cstep:hover{border-top-color:var(--gold);background:var(--panel2)}
.cstep.active{border-top-color:var(--gold);background:var(--panel2);transform:translateY(-2px)}
.cstep .cn{font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;color:var(--faint)}
.cstep.active .cn{color:var(--gold-lt)}
.cstep .ct{font-size:.86rem;margin-top:.3rem;line-height:1.2}
.chain-detail{background:linear-gradient(180deg,rgba(201,154,46,.06),var(--panel));border:1px solid var(--line);
  border-left:3px solid var(--gold);border-radius:3px;padding:1.1rem 1.3rem;margin-bottom:2.4rem;min-height:70px}
.chain-detail .cdh{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-lt);margin-bottom:.35rem}
.chain-detail p{color:var(--ink2);font-size:.98rem}

.split2{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
.scard{border:1px solid var(--line);border-radius:5px;padding:1.6rem}
.scard.own{background:linear-gradient(180deg,rgba(201,154,46,.08),var(--panel))}
.scard.partner{background:var(--panel)}
.scard .sh{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}
.scard.own .sh{color:var(--gold-lt)}
.scard.partner .sh{color:var(--muted)}
.captags{display:flex;flex-wrap:wrap;gap:.5rem}
.captags span{font-family:var(--mono);font-size:.75rem;letter-spacing:.02em;color:var(--ink2);
  background:var(--bg2);border:1px solid var(--line);border-radius:3px;padding:.42rem .7rem}
.scard.own .captags span{border-color:rgba(201,154,46,.35);color:var(--ink)}
.authority{margin-top:1.4rem;background:linear-gradient(180deg,rgba(62,130,174,.08),var(--panel));
  border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:4px;padding:1.1rem 1.3rem;
  font-size:1rem;color:var(--ink2)}
.authority b{color:var(--gold-lt);font-weight:600}

/* ---------- ENGINEERING SERVICES GRID ---------- */
.svcgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
.svc{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:5px;
  padding:1.5rem;transition:border-color .2s,transform .18s}
.svc:hover{border-color:var(--gold);transform:translateY(-3px)}
.svc.hl{background:linear-gradient(180deg,rgba(201,154,46,.1),var(--panel));border-color:rgba(201,154,46,.4)}
.svc .sk{font-family:var(--mono);font-size:.58rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-lt)}
.svc h3{font-size:1.1rem;color:var(--ink);margin:.55rem 0 .5rem}
.svc p{font-size:.9rem;color:var(--ink2);flex:1}
.svc .svclink{margin-top:1rem;font-family:var(--mono);font-size:.73rem;letter-spacing:.03em;color:var(--gold-lt);
  display:inline-flex;align-items:center;gap:.4rem;min-height:32px}
.svc .svclink:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- MISSION-DRIVEN TAGS ---------- */
.mtags{display:flex;flex-wrap:wrap;gap:.55rem;margin-top:1.5rem}
.mtag{font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;color:var(--ink2);background:var(--bg2);
  border:1px solid var(--line);border-radius:999px;padding:.42rem .9rem;transition:border-color .2s,color .2s}
.mtag:hover{border-color:var(--gold);color:var(--gold-lt)}

/* ---------- TYPICAL DELIVERABLES CHAIN ---------- */
.dchain{display:flex;flex-wrap:wrap;gap:.55rem;align-items:stretch}
.dstep{flex:1 1 150px;min-width:140px;background:var(--panel);border:1px solid var(--line);border-radius:4px;
  padding:1rem .95rem;position:relative;display:flex;align-items:center}
.dstep span{font-size:.9rem;color:var(--ink);line-height:1.25}
.dstep .dn{position:absolute;top:.5rem;right:.6rem;font-family:var(--mono);font-size:.56rem;color:var(--faint)}
.dstep:not(:last-child)::after{content:"\2192";position:absolute;right:-.6rem;top:50%;transform:translateY(-50%);
  color:var(--gold);font-size:.95rem;z-index:2;line-height:1}

/* ---------- ENGINEERING WORKFLOWS ---------- */
.cases{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
.case{background:var(--panel);border:1px solid var(--line);border-radius:5px;padding:1.7rem;transition:border-color .2s,transform .18s}
.case:hover{border-color:var(--gold);transform:translateY(-3px)}
.case h3{font-size:1.2rem;color:var(--ink);margin-bottom:.4rem}
.case .cflow{font-family:var(--mono);font-size:.72rem;letter-spacing:.02em;color:var(--gold-lt);margin-bottom:0}
.evnote{font-family:var(--mono);font-size:.74rem;color:var(--muted);margin-top:1.4rem;max-width:78ch;line-height:1.7}

/* ---------- PLATFORMS / PROGRAMMES ---------- */
.spectrum{position:relative;margin:1rem 0 3rem;height:58px}
.spectrum .track{position:absolute;left:2%;right:2%;top:40px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--blue),var(--gold-lt))}
.spectrum .sc0,.spectrum .sc1{position:absolute;top:48px;font-family:var(--mono);font-size:.58rem;color:var(--faint)}
.spectrum .sc0{left:2%}.spectrum .sc1{right:2%}
.pdot{position:absolute;top:32px;transform:translateX(-50%);width:18px;height:18px;border-radius:50%;background:var(--panel);
  border:2px solid var(--muted);cursor:pointer;padding:0;transition:all .2s;z-index:2}
.pdot:hover{border-color:var(--gold-lt)}
.pdot.active{border-color:var(--gold);background:var(--gold);box-shadow:0 0 0 5px rgba(201,154,46,.22)}
.pdot .pl{position:absolute;left:50%;bottom:24px;transform:translateX(-50%);white-space:nowrap;font-family:var(--mono);font-size:.6rem;letter-spacing:.03em;color:var(--muted)}
.pdot:hover .pl,.pdot.active .pl{color:var(--gold-lt)}
.pblock{margin-bottom:2rem}
.pblock-head{display:flex;flex-wrap:wrap;align-items:center;gap:.7rem 1rem;margin-bottom:1.1rem}
.pblock-head h3{font-size:1.6rem;color:var(--ink)}
.devtag{font-family:var(--mono);font-size:.63rem;letter-spacing:.1em;text-transform:uppercase;color:var(--gold-lt);
  border:1px solid rgba(230,200,119,.35);border-radius:999px;padding:.32rem .8rem;display:inline-flex;align-items:center;gap:.5rem}
.devtag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px rgba(201,154,46,.22);flex:none}
.jetgrid{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
.jcard{background:linear-gradient(180deg,rgba(201,154,46,.07),var(--panel));border:1px solid rgba(201,154,46,.28);border-radius:5px;padding:1.6rem;transition:transform .18s,border-color .2s}
.jcard:hover{transform:translateY(-3px);border-color:var(--gold)}
.jmedia{border:1px solid var(--line);border-radius:4px;overflow:hidden;margin:-.3rem 0 1.2rem;background:#0b1a2c;aspect-ratio:16/9}
.jmedia img{width:100%;height:100%;object-fit:cover;display:block}
.jh{display:flex;align-items:center;justify-content:space-between;gap:.6rem;margin-bottom:1rem}
.jh h4{font-size:1.3rem;color:var(--ink)}
.st{font-family:var(--mono);font-size:.58rem;letter-spacing:.13em;text-transform:uppercase;color:var(--gold-lt);border:1px solid rgba(230,200,119,.3);border-radius:2px;padding:.24rem .5rem;white-space:nowrap}
.jspecs{display:flex;flex-wrap:wrap;gap:1.4rem;margin:.2rem 0 1rem}
.jspecs>div{display:flex;flex-direction:column;line-height:1}
.jn{font-family:var(--serif);font-weight:700;font-size:1.6rem;color:var(--gold-lt);font-variant-numeric:tabular-nums}
.ju{font-family:var(--mono);font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:.45rem}
.jcard p{color:var(--ink2);font-size:.92rem}
.flagcard{display:grid;grid-template-columns:.92fr 1.08fr;gap:0;border:1px solid rgba(230,200,119,.42);border-radius:5px;overflow:hidden;margin-bottom:2rem;background:var(--panel);transition:border-color .2s,transform .18s}
.flagcard:hover{border-color:var(--gold);transform:translateY(-3px)}
.flag-media{position:relative;min-height:250px;overflow:hidden}
.flag-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.flag-body{padding:1.9rem}
.flag-body h3{font-size:1.7rem;color:var(--ink);margin:.7rem 0 .5rem}
.flag-body p{color:var(--ink2);font-size:.95rem;margin-bottom:1.1rem}
.pmore{display:inline-block;margin-top:.4rem;font-family:var(--mono);font-size:.78rem;color:var(--gold-lt)}
.lscard{display:flex;flex-wrap:wrap;gap:1rem 1.6rem;align-items:center;justify-content:space-between;background:var(--panel);border:1px solid var(--line);border-radius:5px;padding:1.4rem 1.6rem}
.lscard .lsbody{flex:1 1 340px}
.lscard p{color:var(--muted);font-size:.9rem;margin-top:.3rem;max-width:68ch}
.lsfacts{display:flex;flex-wrap:wrap;gap:.5rem}
.lsfacts span{font-family:var(--mono);font-size:.72rem;color:var(--ink2);background:var(--bg2);border:1px solid var(--line);border-radius:2px;padding:.4rem .7rem;font-variant-numeric:tabular-nums}
.pnote{font-family:var(--mono);font-size:.72rem;color:var(--faint);margin-top:1rem}
.flash{outline:2px solid var(--gold);outline-offset:4px;border-radius:6px}
.progcards{display:none;grid-template-columns:1fr;gap:.7rem;margin:.4rem 0 2.4rem}
.progcard{display:flex;align-items:center;justify-content:space-between;gap:1rem;background:var(--panel);border:1px solid var(--line);border-radius:4px;padding:.9rem 1.1rem;min-height:56px}
.progcard b{font-size:.98rem;color:var(--ink);font-family:var(--sans);font-weight:600}
.progcard span{font-family:var(--mono);font-size:.72rem;color:var(--gold-lt);white-space:nowrap}

/* ---------- KAS-M1 FEATURE ---------- */
.m1{background:var(--bg2)}
.figure{position:relative;border:1px solid var(--line);border-radius:5px;overflow:hidden;background:var(--panel);margin-bottom:2.2rem}
.figure img{width:100%;display:block}
.figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:.7rem .9rem;font-family:var(--mono);font-size:.63rem;letter-spacing:.06em;color:var(--ink2);background:linear-gradient(0deg,rgba(8,17,30,.92),rgba(8,17,30,0))}
.m1-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(1.6rem,4vw,3.4rem);align-items:start}
.pillars{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem 1.7rem;margin-top:1.6rem}
.pillar .pk{font-family:var(--mono);font-size:.66rem;letter-spacing:.13em;text-transform:uppercase;color:var(--gold-lt);margin-bottom:.35rem}
.pillar p{font-size:.92rem;color:var(--muted)}
.roles{font-family:var(--mono);font-size:.82rem;color:var(--ink2);letter-spacing:.02em;margin-top:1.7rem;border-left:2px solid var(--gold);padding-left:.9rem}
.specs{border-top:1px solid var(--line);margin-top:.4rem}
.spec{display:grid;grid-template-columns:minmax(150px,.6fr) 1fr;gap:1rem;padding:.8rem 0;border-bottom:1px solid var(--line-2);align-items:baseline}
.spec dt{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.spec dd{margin:0;font-size:1.02rem;color:var(--ink);font-variant-numeric:tabular-nums}
.spec dd b{color:var(--gold-lt);font-weight:600}
.caveat{font-family:var(--mono);font-size:.72rem;color:var(--faint);letter-spacing:.03em;margin-top:1.2rem}

/* ---------- DEVELOPMENT PROCESS ---------- */
.flow{display:flex;flex-wrap:wrap;gap:.5rem;align-items:stretch}
.fnode{flex:1 1 150px;min-width:135px;background:var(--panel);border:1px solid var(--line);border-radius:4px;
  padding:.8rem .85rem;position:relative;transition:border-color .2s}
.fnode:hover{border-color:var(--gold)}
.fnode .fn{font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;color:var(--faint)}
.fnode .ft{font-size:.9rem;color:var(--ink);margin-top:.3rem;line-height:1.2}
.fnode.gate{background:linear-gradient(180deg,rgba(201,154,46,.1),var(--panel));border-color:rgba(201,154,46,.4)}
.fnode.gate .fn{color:var(--gold-lt)}
.fnode.gate .ft{color:var(--gold-lt)}
.flow-legend{display:flex;flex-wrap:wrap;gap:1.2rem;margin-top:1.2rem;font-family:var(--mono);font-size:.72rem;color:var(--muted)}
.flow-legend span{display:inline-flex;align-items:center;gap:.5rem}
.flow-legend .k{width:12px;height:12px;border-radius:2px;flex:none}
.flow-legend .k.gate{background:rgba(201,154,46,.4);border:1px solid var(--gold)}
.flow-legend .k.step{background:var(--panel);border:1px solid var(--line)}
.process-note{margin-top:1.6rem;color:var(--ink2);font-size:1rem;border-left:2px solid var(--gold);padding-left:.9rem}

/* ---------- ENGINEERING METHODS / DUO ---------- */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.6rem,4vw,3.4rem)}
.capbox h3{font-size:1.3rem;color:var(--ink);margin-bottom:.4rem}
.capbox .sub{color:var(--muted);font-size:.94rem;margin-bottom:1.1rem}
.capbox ul{list-style:none;margin:0;padding:0;display:grid;gap:.7rem}
.capbox li{font-size:.95rem;color:var(--ink2);padding-left:1.4rem;position:relative}
.capbox li::before{content:"";position:absolute;left:0;top:.6em;width:7px;height:7px;background:var(--gold);transform:rotate(45deg)}

/* ---------- ABOUT / VISION ---------- */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(1.6rem,4vw,3.2rem);margin-top:.4rem}
.aboutcol h3{font-size:1.3rem;color:var(--ink);margin-bottom:.6rem}
.aboutcol p{color:var(--ink2);font-size:.98rem;margin-bottom:1rem}
.advnote{margin-top:1rem;font-family:var(--mono);font-size:.8rem;color:var(--muted)!important;border-left:2px solid var(--gold);padding-left:.9rem;line-height:1.7}
.vision{background:linear-gradient(180deg,rgba(201,154,46,.08),var(--panel));border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:5px;padding:1.6rem}
.vlead{font-family:var(--serif);font-size:1.18rem;line-height:1.42;color:var(--ink)!important}
.vlist{list-style:none;margin:1.1rem 0 0;padding:0;display:grid;gap:.55rem}
.vlist li{font-size:.9rem;color:var(--ink2);padding-left:1.4rem;position:relative}
.vlist li::before{content:"";position:absolute;left:0;top:.55em;width:7px;height:7px;background:var(--gold);transform:rotate(45deg)}
.creds{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.8rem}
.creds span{font-family:var(--mono);font-size:.74rem;color:var(--ink2);background:var(--panel);border:1px solid var(--line);border-radius:2px;padding:.5rem .85rem}

/* ---------- CAPABILITY GRID ---------- */
.capgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
.cap{background:var(--panel);border:1px solid var(--line);border-radius:5px;padding:1.4rem;transition:border-color .2s,transform .18s}
.cap:hover{border-color:var(--gold);transform:translateY(-3px)}
.cap h3{font-size:1.08rem;color:var(--ink);margin-bottom:.45rem}
.cap p{font-size:.9rem;color:var(--muted);line-height:1.55}
.cap.hl{background:linear-gradient(180deg,rgba(201,154,46,.1),var(--panel));border-color:rgba(201,154,46,.4)}
.cap .strat{display:inline-block;font-family:var(--mono);font-size:.58rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-lt);border:1px solid rgba(230,200,119,.4);border-radius:2px;padding:.2rem .5rem;margin-bottom:.6rem}

/* ---------- TOOLCHAIN ---------- */
.toolchain{margin-top:1.6rem;font-family:var(--mono);font-size:.78rem;color:var(--ink2);letter-spacing:.02em;line-height:1.7}
.toolchain span{color:var(--gold-lt);text-transform:uppercase;letter-spacing:.14em;font-size:.66rem;margin-right:.6rem}
.toolnote{margin-top:1rem;font-size:.9rem;color:var(--muted);max-width:76ch;line-height:1.7}

/* ---------- CONTACT / FORM ---------- */
.contact{background:var(--bg2)}
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(1.6rem,4vw,3.4rem);align-items:start}
.cinfo .row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.4rem 1rem;padding:.85rem 0;border-bottom:1px solid var(--line-2)}
.cinfo .row:first-child{border-top:1px solid var(--line)}
.cinfo .k{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.cinfo .v{color:var(--ink);text-align:right;font-size:.96rem;min-width:0;overflow-wrap:anywhere}
.cinfo .v a{color:var(--gold-lt)}
.nda{margin-top:1.4rem;font-size:.92rem;color:var(--ink2);border-left:2px solid var(--gold);padding-left:.9rem}
.formbox{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:clamp(1.5rem,3vw,2.2rem)}
.formbox h3{font-size:1.35rem;margin-bottom:.3rem}
.formbox .fsub{color:var(--muted);font-size:.9rem;margin-bottom:1.4rem}
.formgrid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{display:flex;flex-direction:column;gap:.4rem;min-width:0}
.field.full{grid-column:1 / -1}
.field label{font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.field label .req{color:var(--gold-lt)}
.field input,.field select,.field textarea{
  font-family:var(--sans);font-size:.95rem;color:var(--ink);background:var(--bg2);
  border:1px solid var(--line);border-radius:3px;padding:.7rem .8rem;min-height:44px;width:100%;min-width:0;max-width:100%;transition:border-color .2s}
.field textarea{min-height:120px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--faint)}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 18px) 55%,calc(100% - 13px) 55%;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:2.2rem}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--gold)}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:#C0562F}
.field .err{font-family:var(--mono);font-size:.66rem;color:#E79A72;display:none}
.field.invalid .err{display:block}
.form-actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:1rem;margin-top:.4rem}
.form-actions .btn{padding:.85rem 1.6rem}
.form-msg{font-size:.9rem;color:var(--gold-lt);font-family:var(--mono);display:none;line-height:1.5}
.form-msg.show{display:block}
.form-msg.err{color:#E79A72}
.form-hint{font-family:var(--mono);font-size:.68rem;color:var(--faint);grid-column:1 / -1;margin-top:.2rem}

/* ---------- INTERIOR (service / privacy) PAGES ---------- */
.phero{position:relative;padding:132px 0 clamp(2rem,5vw,3.2rem);
  background:linear-gradient(0deg,var(--bg),var(--bg)),radial-gradient(120% 90% at 82% 0%,rgba(46,90,138,.2),rgba(8,17,30,0) 60%)}
.crumb{font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
  margin-bottom:1rem;display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--gold-lt)}
.crumb .sep{opacity:.5}
.phero h1{font-size:clamp(2rem,4.4vw,3.1rem);font-weight:800;margin-bottom:1rem;max-width:22ch}
.pcols{display:grid;grid-template-columns:1.5fr .55fr;gap:clamp(1.6rem,4vw,3rem);align-items:start}
.prose h2{font-size:clamp(1.4rem,2.6vw,1.9rem);margin:2.2rem 0 .9rem}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.12rem;color:var(--ink);margin:1.6rem 0 .6rem}
.prose p{color:var(--ink2);margin-bottom:1rem;max-width:74ch}
.scope{display:grid;grid-template-columns:1fr 1fr;gap:.6rem 1.6rem;margin:.2rem 0 1rem;padding:0}
.scope li{list-style:none;font-size:.93rem;color:var(--ink2);padding-left:1.3rem;position:relative}
.scope li::before{content:"";position:absolute;left:0;top:.55em;width:6px;height:6px;background:var(--gold);transform:rotate(45deg)}
.sidebox{background:linear-gradient(180deg,rgba(201,154,46,.06),var(--panel));border:1px solid var(--line);
  border-left:3px solid var(--gold);border-radius:5px;padding:1.3rem;position:sticky;top:88px}
.sidebox h3{font-family:var(--mono);font-size:.66rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-lt);margin:0 0 .7rem}
.sidebox+.sidebox{margin-top:1rem}
.sidebox ul{list-style:none;margin:0;padding:0;display:grid;gap:.55rem}
.sidebox li{font-size:.88rem;color:var(--ink2)}
.sidebox a{color:var(--ink2)}
.sidebox a:hover{color:var(--gold-lt)}
.related{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:.4rem}
.related a{font-family:var(--mono);font-size:.74rem;letter-spacing:.02em;color:var(--ink2);background:var(--panel);
  border:1px solid var(--line);border-radius:3px;padding:.5rem .85rem;transition:border-color .2s,color .2s}
.related a:hover{border-color:var(--gold);color:var(--gold-lt)}

/* ---------- CTA BAND ---------- */
.ctaband{background:linear-gradient(180deg,var(--bg2),var(--panel));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.ctaband .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1.4rem}
.ctaband h2{font-size:clamp(1.4rem,2.6vw,1.95rem)}
.ctaband p{color:var(--ink2);margin-top:.45rem;max-width:54ch}

/* ---------- FOOTER ---------- */
footer{border-top:1px solid var(--line);padding-block:2.8rem 2.2rem;background:var(--panel)}
.footcols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:1.6rem;margin-bottom:2.2rem}
.footcols .fcolh{font-family:var(--mono);font-size:.64rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-lt);margin:0 0 .85rem}
.footcta{margin-top:1rem}
.footcols ul{list-style:none;margin:0;padding:0;display:grid;gap:.5rem}
.footcols a{font-size:.86rem;color:var(--ink2)}
.footcols a:hover{color:var(--gold-lt)}
.footcols .fabout{font-size:.88rem;color:var(--muted);max-width:36ch;line-height:1.7}
.foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1.6rem;border-top:1px solid var(--line-2);padding-top:1.8rem}
.foot .fb{display:flex;align-items:center;gap:11px}
.foot .fb img{height:34px}
.foot .fb b{font-family:var(--serif);font-size:1.02rem}
.foot .fb b span,.footcols .fb b span{font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;display:block;margin-top:4px;font-weight:400}
.foot .meta{font-family:var(--mono);font-size:.74rem;color:var(--muted);line-height:1.85;text-align:right;overflow-wrap:anywhere}
.foot .meta a{color:var(--gold-lt)}

/* ---------- RESPONSIVE ---------- */
@media (max-width:1024px){
  .brand,.navtoggle{position:relative;z-index:80}
  nav.links{position:fixed;inset:0 0 auto 0;top:0;flex-direction:column;align-items:flex-start;gap:0;
    background:rgba(9,19,34,.98);backdrop-filter:blur(12px);padding:82px 26px 30px;border-bottom:1px solid var(--line);
    max-height:100dvh;overflow-y:auto;overscroll-behavior:contain;
    transform:translateY(-100%);visibility:hidden;transition:transform .2s ease,visibility 0s linear .2s;z-index:70}
  nav.links.open{transform:translateY(0);visibility:visible;transition:transform .2s ease,visibility 0s}
  nav.links a{padding:.95rem 0;width:100%;border-bottom:1px solid var(--line-2);font-size:1.05rem;min-height:48px;display:flex;align-items:center}
  nav.links a.active::after{display:none}
  nav.links .btn{margin-top:1.1rem;width:100%;justify-content:center;min-height:48px}
  .navtoggle{display:inline-flex}
  .ways,.cases,.svcgrid{grid-template-columns:1fr 1fr}
  .capgrid{grid-template-columns:1fr 1fr}
  .footcols{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .ways,.cases,.split2,.m1-grid,.duo,.people,.contact-grid,.jetgrid,.flagcard,.formgrid,.capgrid,.about-grid,.svcgrid,.pcols{grid-template-columns:1fr}
  .pillars{grid-template-columns:1fr}
  .flag-media{min-height:200px}
  .foot .meta{text-align:left}
  .sidebox{position:static}
  .spectrum{display:none}
  .progcards{display:grid}
  .fnode{flex-basis:calc(50% - .5rem)}
  .dchain{flex-direction:column}
  .dstep:not(:last-child)::after{content:"\2193";right:auto;left:50%;top:auto;bottom:-.58rem;transform:translateX(-50%)}
}
@media (max-width:480px){
  .brand .bt{font-size:.86rem}
  .brand .bt span{font-size:.5rem;letter-spacing:.06em}
  .scope{grid-template-columns:1fr}
  .fnode{flex-basis:100%}
  .footcols{grid-template-columns:1fr}
  .hero-cta .btn,.ctaband .btn{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1!important;transform:none!important}
}

/* body scroll lock while mobile menu is open */
body.nav-open{overflow:hidden}

/* capability chain panels (progressive enhancement: all show without JS) */
.cpanel{margin-bottom:.6rem}
.js .cpanel{display:none}
.js .cpanel.active{display:block;margin-bottom:0}

/* overflow safety: let grid/flex items shrink below content; keep header buttons on one line */
.pcols>*,.contact-grid>*,.svcgrid>*,.ways>*,.cases>*,.jetgrid>*,.split2>*,.duo>*,.about-grid>*,.formgrid>*,.m1-grid>*{min-width:0}
header.nav .btn{white-space:nowrap}

/* ---------- scroll reveal (progressive enhancement) ---------- */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}

/* ===== production final-pass additions — 2026-09-22 ===== */
/* honeypot spam trap (visually hidden, off-screen) */
.hp{position:absolute!important;left:-9999px!important;top:auto;width:1px;height:1px;overflow:hidden}
/* §3 fix: gold CTA must wrap & centre inside the mobile menu button, never clip/overflow */
@media (max-width:1024px){
  header.nav nav.links .btn{white-space:normal;line-height:1.25;text-align:center;padding-inline:1rem;overflow-wrap:normal}
}
/* §4/§43: guarantee a >=44px menu-button touch target (never shrink in the flex row) */
.navtoggle{flex:none}
/* §1/§16 logo prominence: keep the full KAS symbol legible without cramping small phones */
@media (max-width:480px){ .brand img{height:36px} }
/* jet-programmes: one shared background render with the content overlaid */
.jetstage{position:relative;border:1px solid var(--line);border-radius:6px;overflow:hidden;margin:.2rem 0 1rem;min-height:300px;display:flex;align-items:flex-end}
.jetbg{position:absolute;inset:0;z-index:0}
.jetbg img{width:100%;height:100%;object-fit:cover;object-position:50% 42%;display:block}
.jetstage::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(180deg,rgba(8,17,30,.30),rgba(8,17,30,.64) 58%,rgba(8,17,30,.86))}
.jetstage .jetgrid{position:relative;z-index:2;width:100%;padding:clamp(1.1rem,2.6vw,1.7rem)}
.jetstage .jcard{background:rgba(9,18,31,.60);border:1px solid rgba(150,178,206,.24);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
.jetstage .jmedia{display:none}
@media (min-width:761px){ .jetstage{min-height:560px} }

/* ===== homepage compression & programme-priority pass — 2026-09-23 ===== */
/* Programmes moved to top third: one shared jet render as the section background,
   the four programmes overlaid as a uniform 2x2 grid (no engine count disclosed). */
.progfeat{position:relative;overflow:hidden;background:var(--bg)}
.progbg{position:absolute;inset:0;z-index:0}
.progbg img{width:100%;height:100%;object-fit:cover;object-position:50% 42%;display:block}
.progfeat::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(8,16,28,.74),rgba(8,16,28,.82))}
.progfeat>.wrap{position:relative;z-index:2}

.pgrid{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
.pcard{display:flex;flex-direction:column;background:rgba(10,20,33,.66);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  border:1px solid rgba(150,178,206,.22);border-radius:6px;padding:1.5rem;
  transition:transform .18s,border-color .2s}
.pcard:hover{transform:translateY(-3px);border-color:var(--gold)}
.pcard.flag{border-color:rgba(230,200,119,.5);
  background:linear-gradient(180deg,rgba(201,154,46,.12),rgba(10,20,33,.72))}
.ph{display:flex;align-items:center;justify-content:space-between;gap:.6rem;margin-bottom:.7rem}
.pk{font-family:var(--mono);font-size:.6rem;letter-spacing:.13em;text-transform:uppercase;color:var(--gold-lt)}
.pstate{font-family:var(--mono);font-size:.56rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
  border:1px solid var(--line);border-radius:2px;padding:.2rem .5rem;white-space:nowrap;flex:none}
.pcard.flag .pstate{color:var(--gold-lt);border-color:rgba(230,200,119,.4)}
.pcard h3{font-size:1.5rem;color:var(--ink);margin:0 0 .9rem}
.pspecs{display:flex;flex-wrap:wrap;gap:.9rem 1.4rem;margin:0 0 .9rem}
.pspecs>div{display:flex;flex-direction:column;line-height:1;min-width:0}
.pn{font-family:var(--serif);font-weight:700;font-size:1.4rem;color:var(--gold-lt);font-variant-numeric:tabular-nums}
.pu{font-family:var(--mono);font-size:.57rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-top:.4rem}
.pcard p{color:var(--ink2);font-size:.92rem;margin:0}

/* Explore-all bar under the 6 featured services (all 11 SEO pages stay one click away) */
.svc-all{display:flex;flex-wrap:wrap;align-items:center;gap:.9rem 1.6rem;justify-content:space-between;
  margin-top:1.2rem;background:linear-gradient(180deg,rgba(201,154,46,.06),var(--panel));
  border:1px solid var(--line);border-radius:5px;padding:1.2rem 1.5rem}
.svc-all-h{display:flex;flex-direction:column;gap:.3rem;flex:1 1 240px}
.svc-all-h .sk{font-family:var(--mono);font-size:.58rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-lt)}
.svc-all-h b{font-family:var(--serif);font-weight:700;font-size:1.15rem;color:var(--ink)}
.svc-all-links{display:flex;flex-wrap:wrap;gap:.5rem .7rem;flex:2 1 420px}
.svc-all-links a{font-family:var(--mono);font-size:.74rem;letter-spacing:.02em;color:var(--gold-lt);
  border:1px solid var(--line);border-radius:2px;padding:.5rem .7rem;min-height:40px;display:inline-flex;align-items:center;
  transition:border-color .2s,background .2s}
.svc-all-links a:hover{border-color:var(--gold);background:var(--panel2)}

/* Compact "typical engineering outputs" line (replaces the standalone deliverables grid) */
.outputs{font-family:var(--mono);font-size:.78rem;color:var(--ink2);letter-spacing:.02em;line-height:1.7;margin-top:1.4rem}
.outputs span{color:var(--gold-lt);text-transform:uppercase;letter-spacing:.14em;font-size:.66rem;margin-right:.6rem;display:inline-block}

/* overflow safety for the new grids */
.pgrid>*,.svc-all>*{min-width:0}

@media (max-width:760px){
  .pgrid{grid-template-columns:1fr}
  .svc-all{flex-direction:column;align-items:flex-start}
}

/* ===== brand lock-up enlargement — 2026-09-24 =====
   Larger KAS logo; company name sized to span the full slogan line below it.
   Header row gets a wider container and collapses to the menu button at 1180px
   so the larger lock-up never collides with the navigation. */
.brand{gap:12px}
.brand img{height:56px}
.brand .bt{font-size:1.3rem;letter-spacing:.015em}
.brand .bt span{margin-top:6px}
header.nav .wrap.navrow{max-width:1360px}
@media (max-width:1180px){
  .brand,.navtoggle{position:relative;z-index:80}
  nav.links{position:fixed;inset:0 0 auto 0;top:0;flex-direction:column;align-items:flex-start;gap:0;
    background:rgba(9,19,34,.98);backdrop-filter:blur(12px);padding:92px 26px 30px;border-bottom:1px solid var(--line);
    max-height:100dvh;overflow-y:auto;overscroll-behavior:contain;
    transform:translateY(-100%);visibility:hidden;transition:transform .2s ease,visibility 0s linear .2s;z-index:70}
  nav.links.open{transform:translateY(0);visibility:visible;transition:transform .2s ease,visibility 0s}
  nav.links a{padding:.95rem 0;width:100%;border-bottom:1px solid var(--line-2);font-size:1.05rem;min-height:48px;display:flex;align-items:center}
  nav.links a.active::after{display:none}
  nav.links .btn{margin-top:1.1rem;width:100%;justify-content:center;min-height:48px}
  header.nav nav.links .btn{white-space:normal;line-height:1.25;text-align:center;padding-inline:1rem;overflow-wrap:normal}
  .navtoggle{display:inline-flex}
}
@media (max-width:480px){
  .brand{gap:9px}
  .brand img{height:42px}
  .brand .bt{font-size:1.15rem}
  .brand .bt span{font-size:.54rem;letter-spacing:.09em;margin-top:4px}
}
@media (max-width:370px){
  .brand img{height:36px}
  .brand .bt{font-size:1rem}
  .brand .bt span{font-size:.47rem;letter-spacing:.08em}
}