/* Demanlink Connexion — shared design system
   Fonts: Space Grotesk (display) + Inter (body)
   Palette: institutional telecom navy + signal blue/cyan */
:root{
  --navy:#10256b;        /* brand navy (logo) */
  --navy-deep:#0a1636;   /* deepest navy — dark sections / ink */
  --ink:#111a30;         /* body text on light */
  --blue:#1f8fd6;        /* brand bright blue (logo) */
  --blue-ink:#136aa6;    /* darker blue for small text (contrast-safe) */
  --cyan:#38bdf8;        /* signal glow */
  --paper:#f5f8fc;       /* cool white */
  --paper-deep:#eaf0f8;  /* alt section */
  --line:#d7e0ee;        /* hairline */
  --muted:#4a5670;       /* muted text on light (>=4.5:1 on paper) */
  --muted-d:#9fb2d6;     /* muted on dark */
  --white:#ffffff;
  --r:cubic-bezier(0.16,1,0.3,1);
  --wrap:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Inter",system-ui,sans-serif;font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4{font-family:"Space Grotesk",sans-serif;font-weight:600;line-height:1.08;
  letter-spacing:-0.02em;color:var(--navy-deep);margin:0 0 .5em}
h2{font-size:clamp(1.9rem,4vw,3rem)}
h3{font-size:clamp(1.25rem,2.2vw,1.6rem);letter-spacing:-0.01em}
p{margin:0 0 1rem}
a{color:var(--blue-ink);text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
section{padding:96px 0}
.alt{background:var(--paper-deep)}
.dark{background:var(--navy-deep);color:#e7eefb}
.dark h1,.dark h2,.dark h3,.dark h4{color:#fff}
.eyebrow{font:600 .74rem/1 "Space Grotesk",sans-serif;letter-spacing:.18em;
  text-transform:uppercase;color:var(--blue-ink);margin-bottom:18px}
.dark .eyebrow{color:var(--cyan)}
.lead{font-size:clamp(1.05rem,1.6vw,1.24rem);color:var(--muted);max-width:60ch}
.dark .lead{color:var(--muted-d)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5em;cursor:pointer;
  font:600 .96rem/1 "Space Grotesk",sans-serif;letter-spacing:.01em;
  padding:15px 26px;border-radius:10px;border:1px solid transparent;
  transition:transform .2s var(--r),background .2s var(--r),box-shadow .2s var(--r)}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 24px -8px rgba(31,143,214,.6)}
.btn-primary:hover{background:#1a7dbd;transform:translateY(-2px);box-shadow:0 14px 30px -10px rgba(31,143,214,.7)}
.btn-ghost{background:transparent;color:var(--navy-deep);border-color:var(--line)}
.btn-ghost:hover{background:#fff;border-color:var(--blue);transform:translateY(-2px)}
.dark .btn-ghost{color:#fff;border-color:rgba(255,255,255,.28)}
.dark .btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--cyan)}

/* ---------- nav ---------- */
#nav{position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .3s var(--r),box-shadow .3s var(--r),backdrop-filter .3s}
#nav .bar{display:flex;align-items:center;justify-content:space-between;
  height:74px;max-width:var(--wrap);margin:0 auto;padding:0 24px}
#nav.scrolled{background:rgba(245,248,252,.82);backdrop-filter:blur(14px) saturate(1.2);
  box-shadow:0 1px 0 var(--line)}
#nav .logo{height:30px;width:auto;transition:filter .3s var(--r)}
/* every page opens over a dark hero: nav is transparent at top -> light marks; on scroll bg turns light -> dark marks */
#nav .logo{filter:brightness(0) invert(1)}
#nav.scrolled .logo{filter:none}
#nav .links{display:flex;align-items:center;gap:30px}
#nav .links a{color:rgba(255,255,255,.92);font:500 .95rem/1 "Inter",sans-serif;transition:color .2s}
#nav.scrolled .links a{color:var(--ink)}
#nav .links a:hover{color:var(--cyan)}
#nav.scrolled .links a:hover{color:var(--blue-ink)}
#nav .links a.btn-primary{color:#fff}
#nav .burger{display:none;background:none;border:0;cursor:pointer;padding:8px}
#nav .burger span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;transition:.3s var(--r)}
#nav.scrolled .burger span{background:var(--navy-deep)}
#drawer{position:fixed;inset:0 0 0 auto;width:min(84vw,340px);z-index:60;
  background:var(--navy-deep);transform:translateX(100%);transition:transform .4s var(--r);
  padding:90px 30px;display:flex;flex-direction:column;gap:8px}
#drawer.open{transform:translateX(0)}
#drawer a{color:#e7eefb;font:600 1.15rem/1 "Space Grotesk",sans-serif;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.1)}
#drawer .btn{margin-top:18px;justify-content:center}
#scrim{position:fixed;inset:0;background:rgba(6,12,30,.5);z-index:55;opacity:0;pointer-events:none;transition:opacity .3s}
#scrim.on{opacity:1;pointer-events:auto}
@media(max-width:860px){
  #nav .links{display:none}
  #nav .burger{display:block}
}

/* ---------- scroll vine ---------- */
#vine{position:fixed;top:0;left:0;width:3px;height:100vh;z-index:45;background:transparent;pointer-events:none}
#vine i{position:absolute;top:0;left:0;width:100%;height:calc(var(--scroll,0)*100%);
  background:linear-gradient(180deg,var(--blue),var(--cyan));box-shadow:0 0 12px rgba(56,189,248,.6)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--r),transform .7s var(--r)}
.reveal.in{opacity:1;transform:none}
/* failsafe: if JS is disabled, never leave sections blank */
@media (scripting:none){.reveal{opacity:1!important;transform:none!important}}

/* ---------- hero + radio signal ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;
  overflow:hidden;background:radial-gradient(120% 120% at 78% 18%,#173a86 0%,#10256b 38%,#0a1636 100%)}
.hero .wrap{position:relative;z-index:3;padding-top:120px;padding-bottom:80px}
.hero-content{max-width:700px}
.hero h1{color:#fff;font-size:clamp(2.5rem,6vw,4.6rem);line-height:1.02;letter-spacing:-0.035em}
.hero h1 .hl{color:var(--cyan)}
.hero p.sub{color:#c3d3f2;font-size:clamp(1.05rem,1.7vw,1.3rem);max-width:52ch;margin:22px 0 34px}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap}
.hero .btn-ghost{color:#fff;border-color:rgba(255,255,255,.3)}
.hero .btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--cyan);color:#fff}
.hero .facts{display:flex;gap:34px;margin-top:46px;flex-wrap:wrap}
.hero .facts b{font:600 1.9rem/1 "Space Grotesk",sans-serif;color:#fff;display:block}
.hero .facts span{font-size:.82rem;color:#9fb2d6;letter-spacing:.02em}

/* ---- full-bleed radar behind hero content ---- */
.hero .radar{position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden;
  opacity:0;animation:radarFade 2s var(--r) .2s forwards}
@keyframes radarFade{to{opacity:1}}
.radar .stage{position:absolute;left:72%;top:48%;transform:translate(-50%,-50%);
  width:min(150vh,1180px);aspect-ratio:1;display:grid;place-items:center}
/* concentric grid rings */
.radar .rings{position:absolute;inset:0;border-radius:50%;
  background:repeating-radial-gradient(circle at center,
    rgba(56,189,248,.10) 0 1px, transparent 1px 74px);
  -webkit-mask:radial-gradient(circle,#000 62%,transparent 72%);
          mask:radial-gradient(circle,#000 62%,transparent 72%)}
.radar .bound{position:absolute;width:62%;height:62%;border-radius:50%;border:1px solid rgba(56,189,248,.16)}
.radar .cross{position:absolute;width:62%;height:62%}
.radar .cross::before,.radar .cross::after{content:"";position:absolute;background:rgba(56,189,248,.12)}
.radar .cross::before{left:0;right:0;top:50%;height:1px}
.radar .cross::after{top:0;bottom:0;left:50%;width:1px}
/* rotating sweep arm */
.radar .sweep{position:absolute;width:62%;height:62%;border-radius:50%;
  background:conic-gradient(from 0deg,rgba(56,189,248,.34),rgba(56,189,248,.05) 26%,transparent 42%,transparent 100%);
  -webkit-mask:radial-gradient(circle,#000 99%,transparent 100%);
          mask:radial-gradient(circle,#000 99%,transparent 100%);
  animation:radarSpin 7s linear infinite;transform-origin:center}
@keyframes radarSpin{to{transform:rotate(360deg)}}
/* expanding pings (relative to stage size) */
.radar .ping{position:absolute;width:6%;height:6%;border-radius:50%;
  border:1.5px solid rgba(56,189,248,.5);animation:ping 5s var(--r) infinite}
@keyframes ping{
  0%{width:6%;height:6%;opacity:.8;border-color:rgba(56,189,248,.6)}
  70%{opacity:.14}
  100%{width:62%;height:62%;opacity:0;border-color:rgba(56,189,248,0)}
}
.radar .core{position:absolute;width:16px;height:16px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 34px 10px rgba(56,189,248,.75)}
/* keep left text readable over the radar bleed */
.hero::after{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background:linear-gradient(90deg,rgba(10,22,54,.72) 0%,rgba(10,22,54,.32) 40%,transparent 66%)}
.hero .grain{position:absolute;inset:0;z-index:2;opacity:.05;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");mix-blend-mode:overlay}
@media(max-width:900px){
  .radar .stage{left:50%;top:38%;width:min(112vw,760px)}
  .hero::after{background:linear-gradient(180deg,rgba(10,22,54,.35) 0%,rgba(10,22,54,.55) 55%,rgba(10,22,54,.82) 100%)}
}
@media(prefers-reduced-motion:reduce){
  .radar .sweep{animation:none;opacity:.5}
  .radar .ping{animation:none;width:44%;height:44%;opacity:.18}
  .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- marquee ---------- */
.marquee{position:relative;overflow:hidden;padding:14px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);
          mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.marquee-track{display:flex;align-items:center;gap:clamp(34px,5vw,64px);width:max-content;
  animation:scrollX 34s linear infinite;will-change:transform}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track span{font:600 1.02rem/1 "Space Grotesk",sans-serif;color:var(--muted);white-space:nowrap;letter-spacing:.01em}
.marquee-track span::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--blue);margin-right:14px;vertical-align:middle}
@keyframes scrollX{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media(prefers-reduced-motion:reduce){.marquee-track{animation:none!important}}

/* ---------- cards / grids ---------- */
.grid{display:grid;gap:22px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
@media(max-width:900px){.g3,.g4{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px;
  transition:transform .3s var(--r),box-shadow .3s var(--r),border-color .3s}
.card:hover{transform:translateY(-4px);box-shadow:0 20px 44px -22px rgba(16,37,107,.35);border-color:#bcd0ee}
.card .ic{width:46px;height:46px;border-radius:11px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(135deg,rgba(31,143,214,.14),rgba(56,189,248,.08));color:var(--blue-ink)}
.card .ic svg{width:24px;height:24px}
.card h3{margin-bottom:.4em}
.card p{color:var(--muted);font-size:.97rem;margin-bottom:.6em}
.card a.more{font:600 .9rem/1 "Space Grotesk",sans-serif;color:var(--blue-ink);display:inline-flex;gap:6px;align-items:center}
.card a.more:hover{gap:10px}

/* stats */
.stat b{font:600 clamp(2.4rem,5vw,3.4rem)/1 "Space Grotesk",sans-serif;color:var(--navy-deep);display:block}
.dark .stat b{color:#fff}
.stat span{color:var(--muted);font-size:.95rem}
.dark .stat span{color:var(--muted-d)}

/* section head */
.shead{max-width:64ch;margin-bottom:52px}
.shead.center{margin-left:auto;margin-right:auto;text-align:center}

/* faq */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:24px 40px 24px 0;position:relative;
  font:600 1.12rem/1.4 "Space Grotesk",sans-serif;color:var(--navy-deep)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:22px;font-size:1.5rem;color:var(--blue);transition:transform .3s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{color:var(--muted);padding:0 40px 24px 0;margin:0}

/* media split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split img{border-radius:16px;box-shadow:0 24px 60px -30px rgba(16,37,107,.5)}
.split.rev .txt{order:2}
@media(max-width:860px){.split{grid-template-columns:1fr;gap:30px}.split.rev .txt{order:0}}

/* footer */
footer{background:var(--navy-deep);color:#c3d3f2;padding:64px 0 34px}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:40px}
footer h4{color:#fff;font-size:.9rem;letter-spacing:.05em;text-transform:uppercase;margin-bottom:16px}
footer a{color:#9fb2d6;display:block;padding:5px 0;font-size:.95rem}
footer a:hover{color:var(--cyan)}
footer .logo{height:32px;margin-bottom:16px;filter:brightness(0) invert(1)}
footer .fine{border-top:1px solid rgba(255,255,255,.12);padding-top:22px;font-size:.83rem;color:#7f92b8;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
@media(max-width:720px){footer .cols{grid-template-columns:1fr 1fr}}

/* pill / tag */
.pill{display:inline-block;font:600 .72rem/1 "Space Grotesk",sans-serif;letter-spacing:.06em;text-transform:uppercase;
  padding:7px 12px;border-radius:999px;background:rgba(31,143,214,.1);color:var(--blue-ink)}
.badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.badge{font:600 .8rem/1 "Space Grotesk",sans-serif;color:var(--muted);border:1px solid var(--line);
  padding:9px 14px;border-radius:8px;background:#fff}
.dark .badge{background:rgba(255,255,255,.06);color:#c3d3f2;border-color:rgba(255,255,255,.14)}

/* table */
.tbl{width:100%;border-collapse:collapse;font-size:.94rem;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.tbl th{background:var(--navy-deep);color:#fff;text-align:left;padding:14px 16px;font:600 .82rem/1.2 "Space Grotesk",sans-serif;letter-spacing:.03em}
.tbl td{padding:13px 16px;border-top:1px solid var(--line);color:var(--muted)}
.tbl tr:nth-child(even) td{background:#fafcfe}
.tbl-scroll{overflow-x:auto}