/* Forge Blue · design system
   Layout concept: instrument panels on open water. Full-bleed map and video bands,
   content on a 1240px grid, live tools framed as app windows. */
:root{
  --abyss:#030D1B; --deep:#071A30; --shelf:#0D2643; --reefline:#163A60;
  --line:rgba(150,196,236,.14); --line2:rgba(150,196,236,.26);
  --foam:#EAF3F8; --mist:#A3B8CB; --haze:#6F88A0;
  --tide:#4FE3C8; --tide-d:#1FB89C; --sun:#FFC24B; --coral:#FF6F5B; --violet:#8F7DFF; --sky:#4CB4F0;
  --display:"Bricolage Grotesque","IBM Plex Sans",system-ui,sans-serif;
  --body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --r:14px; --wrap:1240px;
  --ease:cubic-bezier(.2,.8,.2,1);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--abyss)}
body{margin:0;background:var(--abyss);color:var(--foam);font-family:var(--body);font-size:16.5px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video,canvas,svg{max-width:100%}
a{color:inherit}
::selection{background:var(--tide);color:#03201A}
:focus-visible{outline:2px solid var(--sun);outline-offset:3px;border-radius:6px}
h1,h2,h3,h4{font-family:var(--display);font-weight:700;letter-spacing:-.02em;line-height:1.04;text-wrap:balance;margin:0}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.mono{font-family:var(--mono)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--tide)}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;opacity:.7}
.eyebrow.sun{color:var(--sun)}
.lede{font-size:clamp(17px,1.5vw,20px);color:var(--mist);max-width:62ch;line-height:1.6}
.tabnum{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:rgba(3,13,27,.9)}
.hdr{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:rgba(3,13,27,.72);backdrop-filter:blur(14px) saturate(1.3);-webkit-backdrop-filter:blur(14px) saturate(1.3);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;gap:22px;height:66px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;flex:none}
.brand .mk{width:34px;height:34px;flex:none}
.brand b{font-family:var(--display);font-size:19px;letter-spacing:-.01em;font-weight:700}
.brand small{display:block;font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;color:var(--haze);text-transform:uppercase;margin-top:-2px}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav a{text-decoration:none;font-size:14.5px;color:var(--mist);padding:8px 12px;border-radius:9px;transition:color .2s,background .2s;white-space:nowrap}
.nav a:hover{color:var(--foam);background:rgba(255,255,255,.05)}
.nav a[aria-current="page"]{color:var(--foam)}
.nav a[aria-current="page"]::after{content:"";display:block;height:2px;background:var(--tide);border-radius:2px;margin-top:3px}
.bzpill{display:inline-flex;align-items:center;gap:8px;text-decoration:none;font-size:13px;font-weight:600;padding:6px 12px 6px 6px;border-radius:99px;border:1px solid rgba(255,194,75,.4);background:rgba(255,194,75,.08);color:var(--sun);white-space:nowrap}
.bzpill .fl{width:22px;height:15px;border-radius:3px;overflow:hidden;flex:none}
.bzpill:hover{background:rgba(255,194,75,.16)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-family:var(--body);font-weight:600;font-size:15px;text-decoration:none;border:0;border-radius:11px;padding:12px 18px;cursor:pointer;transition:transform .2s var(--ease),background .2s,box-shadow .2s;white-space:nowrap}
.btn.pri{background:var(--tide);color:#03241D;box-shadow:0 10px 30px -10px rgba(79,227,200,.6)}
.btn.pri:hover{transform:translateY(-1px);background:#6AF0D7}
.btn.ghost{background:rgba(255,255,255,.04);color:var(--foam);border:1px solid var(--line2)}
.btn.ghost:hover{background:rgba(255,255,255,.08)}
.btn.sun{background:var(--sun);color:#2A1B00}
.btn.sm{padding:8px 13px;font-size:13.5px;border-radius:9px}
.menu{display:none;margin-left:auto;background:none;border:1px solid var(--line2);color:var(--foam);border-radius:10px;width:42px;height:40px}
.menu span{display:block;width:18px;height:2px;background:currentColor;margin:4px auto;border-radius:2px}
@media (max-width:1080px){
  .nav{position:fixed;inset:66px 0 auto 0;top:calc(66px + env(safe-area-inset-top,0px));flex-direction:column;align-items:stretch;gap:2px;background:rgba(3,13,27,.97);padding:12px max(16px,env(safe-area-inset-left,0px)) 20px;border-bottom:1px solid var(--line);display:none;max-height:calc(100vh - 66px);overflow:auto}
  .nav.open{display:flex}
  .nav a{font-size:16px;padding:12px}
  .nav a[aria-current="page"]::after{display:none}
  .menu{display:block}
  .hdr .cta-d{display:none}
}

/* ---------- sections ---------- */
.sec{padding-block:clamp(72px,9vw,128px);position:relative}
.sec.tight{padding-block:clamp(48px,6vw,80px)}
.sec.band{background:var(--deep);border-block:1px solid var(--line)}
.shead{display:grid;gap:18px;margin-bottom:clamp(30px,4vw,52px);max-width:820px}
.shead h2{font-size:clamp(34px,4.6vw,62px)}
.shead.split{max-width:none;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);align-items:end;gap:40px}
@media (max-width:900px){.shead.split{grid-template-columns:minmax(0,1fr);gap:16px}}
.accent{color:var(--tide)}
.accent-sun{color:var(--sun)}

/* reveal: visible at rest without JS; JS adds .js and animates below-fold content */
.js .rv.go{animation:rise .9s var(--ease) both}
@keyframes rise{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.js .rv.go{animation:none}html{scroll-behavior:auto}}

/* ---------- page hero (inner pages) ---------- */
.phero{position:relative;padding-block:clamp(64px,8vw,112px) clamp(40px,5vw,64px);overflow:hidden;border-bottom:1px solid var(--line)}
.phero .bgv{position:absolute;inset:0;z-index:0}
.phero .bgv video,.phero .bgv img{width:100%;height:100%;object-fit:cover;opacity:.32;filter:saturate(1.1)}
.phero .bgv::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--abyss) 18%,rgba(3,13,27,.55) 60%,rgba(3,13,27,.85)),linear-gradient(0deg,var(--abyss),transparent 45%)}
.phero .wrap{position:relative;z-index:1;display:grid;gap:22px}
.phero h1{font-size:clamp(42px,6.6vw,92px);max-width:16ch}
.phero .crumbs{font-family:var(--mono);font-size:12px;color:var(--haze);letter-spacing:.1em;text-transform:uppercase}
.phero .crumbs a{text-decoration:none;color:var(--mist)}
.chipsrow{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--mist);border:1px solid var(--line2);border-radius:99px;padding:6px 12px;background:rgba(255,255,255,.03)}
.chip i{width:7px;height:7px;border-radius:50%;background:var(--tide);box-shadow:0 0 10px var(--tide)}

/* ---------- app shell (live previews) ---------- */
.shell{border:1px solid var(--line2);border-radius:18px;background:linear-gradient(180deg,#0A1E38,#061528);box-shadow:0 60px 120px -50px rgba(0,0,0,.9),0 0 0 1px rgba(255,255,255,.02) inset;overflow:hidden;position:relative}
.chrome{display:flex;align-items:center;gap:12px;padding:10px 14px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.chrome .dots{display:flex;gap:6px}
.chrome .dots i{width:10px;height:10px;border-radius:50%;background:#28405E}
.chrome .url{flex:1;min-width:0;font-family:var(--mono);font-size:12px;color:var(--haze);background:rgba(0,0,0,.25);border:1px solid var(--line);border-radius:8px;padding:5px 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chrome .url b{color:var(--foam);font-weight:500}
.livetag{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--tide);flex:none}
.livetag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--tide);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(79,227,200,.6)}70%{box-shadow:0 0 0 9px rgba(79,227,200,0)}100%{box-shadow:0 0 0 0 rgba(79,227,200,0)}}
.note{font-family:var(--mono);font-size:11.5px;color:var(--haze);letter-spacing:.02em}
.flag-ex{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--sun);border:1px solid rgba(255,194,75,.35);border-radius:6px;padding:3px 7px;background:rgba(255,194,75,.06)}

/* map basics */
.lmap{position:absolute;inset:0;background:#06182C}
.leaflet-container{font-family:var(--body);background:#06182C}
.leaflet-control-attribution{background:rgba(3,13,27,.7)!important;color:var(--haze)!important;font-size:10px!important}
.leaflet-control-attribution a{color:var(--mist)!important}
.leaflet-bar a{background:#0B213C!important;color:var(--foam)!important;border-color:var(--line)!important}
.leaflet-tooltip.tt{background:rgba(3,13,27,.92);color:var(--foam);border:1px solid var(--line2);border-radius:8px;font-family:var(--body);font-size:12.5px;box-shadow:0 10px 24px rgba(0,0,0,.5);padding:6px 9px}
.leaflet-tooltip.tt::before{display:none}
.mapbtn{position:absolute;z-index:500;background:rgba(3,13,27,.82);border:1px solid var(--line2);color:var(--foam);border-radius:10px;padding:7px 11px;font:600 12.5px var(--body);backdrop-filter:blur(8px);cursor:pointer}
.mapbtn[aria-pressed="true"]{border-color:var(--tide);color:var(--tide)}
.seg{display:inline-flex;gap:3px;padding:3px;border-radius:11px;background:rgba(0,0,0,.3);border:1px solid var(--line)}
.seg button{border:0;background:none;color:var(--mist);font:600 13px var(--body);padding:7px 12px;border-radius:8px;cursor:pointer;white-space:nowrap}
.seg button[aria-pressed="true"]{background:var(--tide);color:#03241D}
.seg.sun button[aria-pressed="true"]{background:var(--sun);color:#2A1B00}

/* panels */
.panel{background:rgba(3,13,27,.88);border:1px solid var(--line2);border-radius:14px;backdrop-filter:blur(10px);box-shadow:0 20px 50px -20px rgba(0,0,0,.8)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:5px 14px;font-size:13.5px}
.kv dt{color:var(--haze);font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;padding-top:2px}
.kv dd{margin:0}

/* demo pill */
.demopill{position:absolute;z-index:600;display:flex;align-items:center;gap:10px;background:rgba(3,13,27,.9);border:1px solid var(--line2);border-radius:99px;padding:5px 5px 5px 12px;font-size:12.5px;font-weight:600;white-space:nowrap}
.demopill .dd{width:8px;height:8px;border-radius:50%;background:var(--tide);animation:pulse 1.8s infinite;flex:none}
.demopill.off .dd{background:var(--haze);animation:none}
.demopill button{border:0;border-radius:99px;background:var(--sun);color:#2A1B00;font:700 12px var(--body);padding:6px 11px;cursor:pointer}

/* cards */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:980px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.g2,.g3,.g4{grid-template-columns:minmax(0,1fr)}}
.card{border:1px solid var(--line);border-radius:var(--r);background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.01));padding:24px;display:grid;gap:10px;align-content:start;min-width:0}
.card h3{font-size:22px}
.card p{color:var(--mist);font-size:15px}
.card .k{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--tide)}
a.card{text-decoration:none;transition:border-color .25s,transform .25s var(--ease),background .25s}
a.card:hover{border-color:rgba(79,227,200,.45);transform:translateY(-3px);background:linear-gradient(180deg,rgba(79,227,200,.07),rgba(255,255,255,.01))}
.arrow{font-family:var(--mono);font-size:13px;color:var(--tide)}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats>div{padding:22px 20px;border-left:1px solid var(--line);display:grid;gap:4px}
.stats>div:first-child{border-left:0}
.stats b{font-family:var(--display);font-size:clamp(30px,3.4vw,44px);font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stats span{color:var(--mist);font-size:13.5px}
@media (max-width:760px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.stats>div:nth-child(3){border-left:0}.stats>div:nth-child(n+3){border-top:1px solid var(--line)}}

/* feature row: copy beside a live tool */
.feat{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.5fr);gap:clamp(24px,4vw,56px);align-items:start}
.feat.rev{grid-template-columns:minmax(0,1.5fr) minmax(0,.78fr)}
.feat.rev .fcopy{order:2}
.fcopy{display:grid;gap:16px;position:sticky;top:96px}
.fcopy h3{font-size:clamp(28px,3vw,40px)}
.fcopy p{color:var(--mist)}
.ticks{list-style:none;padding:0;margin:4px 0 0;display:grid;gap:9px}
.ticks li{display:grid;grid-template-columns:18px 1fr;gap:10px;font-size:15px;color:var(--mist)}
.ticks li::before{content:"";width:12px;height:12px;margin-top:6px;border:2px solid var(--tide);border-radius:3px;transform:rotate(45deg) scale(.8)}
.ticks b{color:var(--foam);font-weight:600}
@media (max-width:980px){.feat,.feat.rev{grid-template-columns:minmax(0,1fr)}.feat.rev .fcopy{order:0}.fcopy{position:static}}

/* footer */
.ftr{border-top:1px solid var(--line);background:linear-gradient(180deg,var(--abyss),#020913);padding-block:64px 36px}
.ftr .top{display:grid;grid-template-columns:minmax(0,1.2fr) repeat(3,minmax(0,1fr));gap:36px}
.ftr h4{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--haze);font-weight:500;margin-bottom:14px}
.ftr ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.ftr a{text-decoration:none;color:var(--mist);font-size:14.5px}
.ftr a:hover{color:var(--foam)}
.ftr .off{font-size:14px;color:var(--mist);display:grid;gap:2px}
.ftr .off b{color:var(--foam);font-weight:600}
.ftr .bot{margin-top:48px;padding-top:22px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:var(--haze)}
@media (max-width:900px){.ftr .top{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.ftr .top{grid-template-columns:minmax(0,1fr)}}

/* CTA band */
.ctaband{position:relative;overflow:hidden;border:1px solid var(--line2);border-radius:24px;padding:clamp(32px,5vw,64px);background:radial-gradient(120% 140% at 0% 0%,rgba(79,227,200,.18),transparent 55%),radial-gradient(90% 120% at 100% 100%,rgba(143,125,255,.18),transparent 55%),var(--deep);display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:32px;align-items:center}
.ctaband h2{font-size:clamp(32px,4vw,54px)}
.ctaband .acts{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
@media (max-width:860px){.ctaband{grid-template-columns:minmax(0,1fr)}.ctaband .acts{justify-content:flex-start}}

/* video tiles */
.vtile{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line2);background:#000}
.vtile video,.vtile img{width:100%;height:100%;object-fit:cover;display:block}
.vtile figcaption{position:absolute;left:12px;bottom:12px;font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--foam);background:rgba(3,13,27,.75);border:1px solid var(--line2);border-radius:7px;padding:4px 8px}

.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.arcflow{animation:dashflow 3s linear infinite}
@keyframes dashflow{to{stroke-dashoffset:-48}}
.mlbl{display:inline-block;transform:translate(14px,-50%);white-space:nowrap;font:600 12.5px var(--body);color:#fff;text-shadow:0 1px 4px #000,0 0 10px #000}
.mlbl.sm{font-size:11px;font-weight:500;transform:translate(8px,-50%);opacity:.9}
.leaflet-pane canvas,.leaflet-pane svg,.leaflet-pane img{max-width:none!important}

/* ===== light bands: sections alternate dark → light, like an app on paper ===== */
main .sec:not(.band){
  --foam:#0C2238;--mist:#4A6076;--haze:#687E94;--line:rgba(12,34,56,.12);--line2:rgba(12,34,56,.2);
  --tide:#008F78;--sun:#A86E00;--violet:#5C4BD6;--sky:#1679B8;--abyss:#FFFFFF;--deep:#F1F6FA;
  color-scheme:light;color:var(--foam);background:linear-gradient(180deg,#F7FAFC 0%,#EEF4F8 100%)}
main .sec:not(.band)+.sec:not(.band){background:#EEF4F8}
/* dark objects keep their dark tokens inside light bands */
main .sec:not(.band) :is(.shell,.ctaband,.bzband,.code,.omap){
  --foam:#EAF3F8;--mist:#A3B8CB;--haze:#6F88A0;--line:rgba(150,196,236,.14);--line2:rgba(150,196,236,.26);
  --tide:#4FE3C8;--sun:#FFC24B;--violet:#8F7DFF;--sky:#4CB4F0;--abyss:#030D1B;--deep:#071A30;color-scheme:dark;color:var(--foam)}
main .sec:not(.band) .shell{box-shadow:0 40px 90px -40px rgba(12,34,56,.55),0 0 0 1px rgba(12,34,56,.08)}
main .sec:not(.band) .btn.pri{background:#4FE3C8;color:#03241D;box-shadow:0 10px 26px -12px rgba(0,143,120,.6)}
main .sec:not(.band) .btn.sun{background:#FFC24B;color:#2A1B00}
main .sec:not(.band) .btn.ghost{background:#fff;border-color:rgba(12,34,56,.18)}
main .sec:not(.band) .card,main .sec:not(.band) .ocard,main .sec:not(.band) .tier,main .sec:not(.band) .aud div,main .sec:not(.band) .of,main .sec:not(.band) .cl div,main .sec:not(.band) .how div,main .sec:not(.band) .principles div{background:#fff}
main .sec:not(.band) .card,main .sec:not(.band) .ocard,main .sec:not(.band) .tier,main .sec:not(.band) .of,main .sec:not(.band) .aud,main .sec:not(.band) .caps,main .sec:not(.band) .partners,main .sec:not(.band) .how{box-shadow:0 18px 40px -28px rgba(12,34,56,.35)}
main .sec:not(.band) .cap:hover,main .sec:not(.band) .partners a:hover{background:#F2F8FB}
main .sec:not(.band) .ocard.bz{background:linear-gradient(135deg,#FFF6E0,#fff);border-color:rgba(168,110,0,.35)}
main .sec:not(.band) .cap .ic{background:rgba(0,143,120,.08);border-color:rgba(0,143,120,.25)}
main .sec:not(.band) :is(.aud,.cap) svg{stroke:#008F78}
main .sec:not(.band) .flag-ex{color:#8A5A00;border-color:rgba(168,110,0,.35);background:rgba(255,194,75,.14)}
main .sec:not(.band) .seg{background:#E3ECF3;border-color:rgba(12,34,56,.1)}
main .sec:not(.band) .seg button{color:#3A5068}
main .sec:not(.band) .seg button[aria-pressed="true"]{background:#0C2238;color:#fff}
main .sec:not(.band) .shell .seg{background:rgba(0,0,0,.3);border-color:var(--line)}
main .sec:not(.band) .shell .seg button{color:var(--mist)}
main .sec:not(.band) .shell .seg button[aria-pressed="true"]{background:var(--tide);color:#03241D}
main .sec:not(.band) .shell .seg.sun button[aria-pressed="true"]{background:var(--sun);color:#2A1B00}
main .sec:not(.band) .form{background:#fff;box-shadow:0 18px 40px -28px rgba(12,34,56,.35)}
main .sec:not(.band) .form :is(input,select,textarea){background:#F6F9FC;color:#0C2238;border-color:rgba(12,34,56,.18)}
main .sec:not(.band) .stats{border-color:rgba(12,34,56,.12)}
main .sec:not(.band) .pill-h .n{color:#2A1B00;background:#FFC24B}
main .sec:not(.band) :is(.shell,.ctaband,.bzband) .btn.ghost{background:rgba(255,255,255,.05);border-color:var(--line2)}