:root{
  --void:#081316;
  --void-2:#0E1E22;
  --void-3:#132A2F;
  --signal:#4DE8FF;
  --signal-dim:rgba(77,232,255,.14);
  --signal-line:rgba(77,232,255,.28);
  --alert:#FF9D4D;
  --text:#EAF4F5;
  --text-dim:#8FA5A9;
  --text-faint:#5B6E72;
  --border:rgba(234,244,245,.09);
  --border-strong:rgba(234,244,245,.16);
  --glass:rgba(14,30,34,.72);
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background-color:#081316}
html{scroll-behavior:smooth;background:#081316;color-scheme:dark}
body{
  background:#081316;
  color:#EAF4F5;
  font-family:'IBM Plex Sans',sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  min-height:100vh;
  min-height:100dvh;
}
.mono{font-family:'IBM Plex Mono',monospace}
h1,h2,h3{font-family:'Space Grotesk',sans-serif;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
img,svg{display:block}
::selection{background:var(--signal);color:var(--void)}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}

/* ambient grid background */
.grid-bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 70%);
  opacity:.5;
}

/* NAV */
.nav{
  position:sticky;top:0;z-index:200;
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 32px;
  background:rgba(8,19,22,.7);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.nav-logo{display:flex;align-items:center;gap:10px;transition:opacity .15s}
.nav-logo:hover{opacity:.8}
.nav-logo .mark{width:26px;height:26px}
.nav-logo .name{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:15px}
.nav-logo .name span{color:var(--signal)}
.nav-links{display:flex;align-items:center;gap:36px}
.nav-links a{font-size:13.5px;color:var(--text-dim);transition:color .15s}
.nav-links a:hover{color:var(--text)}
.nav-cta{display:flex;align-items:center;gap:14px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:8px;
  font-size:13.5px;font-weight:600;font-family:'IBM Plex Sans',sans-serif;
  cursor:pointer;border:1px solid transparent;
  transition:all .18s;
}
.btn-signal{background:var(--signal);color:var(--void)}
.btn-signal:hover{background:#75EFFF;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--border-strong)}
.btn-ghost:hover{border-color:var(--signal);color:var(--signal)}
.btn-sm{padding:8px 14px;font-size:12.5px}

/* HERO */
.hero{
  position:relative;z-index:1;
  padding:100px 32px 60px;
  display:grid;grid-template-columns:1fr 460px;gap:40px;align-items:center;
  max-width:1180px;margin:0 auto;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--signal);
  padding:6px 12px;border:1px solid var(--signal-line);border-radius:20px;
  background:var(--signal-dim);margin-bottom:24px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--signal);animation:blink 2s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{font-size:52px;font-weight:600;line-height:1.08;margin-bottom:22px}
.hero h1 em{font-style:normal;color:var(--signal)}
.hero p{font-size:17px;color:var(--text-dim);max-width:480px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;align-items:center}
.hero-note{margin-top:22px;font-size:12.5px;color:var(--text-faint);font-family:'IBM Plex Mono',monospace}

/* SONAR SIGNATURE VISUAL */
.sonar{
  position:relative;width:100%;aspect-ratio:1/1;
  display:flex;align-items:center;justify-content:center;
}
.sonar-ring{
  position:absolute;border-radius:50%;
  border:1px solid var(--border-strong);
}
.sonar-ring.r1{width:30%;height:30%}
.sonar-ring.r2{width:55%;height:55%}
.sonar-ring.r3{width:80%;height:80%}
.sonar-ring.r4{width:100%;height:100%;border-color:var(--border)}
.sonar-sweep{
  position:absolute;width:100%;height:100%;border-radius:50%;
  background:conic-gradient(from 0deg, var(--signal-line) 0deg, transparent 40deg, transparent 360deg);
  animation:sweep 4.5s linear infinite;
}
@keyframes sweep{to{transform:rotate(360deg)}}
.sonar-core{
  position:relative;width:10px;height:10px;border-radius:50%;
  background:var(--signal);box-shadow:0 0 0 6px var(--signal-dim), 0 0 24px 4px rgba(77,232,255,.5);
  z-index:2;
}
.ping{
  position:absolute;width:8px;height:8px;border-radius:50%;background:var(--signal);
  box-shadow:0 0 12px 2px rgba(77,232,255,.7);
  animation:pingfade 3s ease-out infinite;
}
.ping.alert{background:var(--alert);box-shadow:0 0 12px 2px rgba(255,157,77,.7)}
.ping-label{
  position:absolute;font-family:'IBM Plex Mono',monospace;font-size:9.5px;color:var(--text-dim);
  white-space:nowrap;transform:translateY(-16px);opacity:0;animation:labelfade 3s ease-out infinite;
}
@keyframes pingfade{0%{opacity:0;transform:scale(.4)}15%{opacity:1;transform:scale(1)}100%{opacity:0;transform:scale(1)}}
@keyframes labelfade{0%,10%{opacity:0}20%{opacity:1}80%{opacity:1}100%{opacity:0}}

/* STATS STRIP */
.stats-strip{
  position:relative;z-index:1;
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  background:var(--void-2);
}
.stats-grid{
  max-width:1180px;margin:0 auto;padding:0 32px;
  display:grid;grid-template-columns:repeat(4,1fr);
}
.stat{padding:32px 24px;border-left:1px solid var(--border)}
.stat:first-child{border-left:none}
.stat-value{font-family:'Space Grotesk',sans-serif;font-size:30px;font-weight:600;color:var(--signal);margin-bottom:6px}
.stat-label{font-size:12.5px;color:var(--text-dim);max-width:200px}

/* SECTIONS */
section{position:relative;z-index:1}
.section-pad{padding:110px 32px}
.section-head{max-width:600px;margin:0 auto 64px;text-align:center}
.section-eyebrow{font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--signal);margin-bottom:14px}
.section-head h2{font-size:34px;font-weight:600;margin-bottom:14px}
.section-head p{color:var(--text-dim);font-size:15.5px}

/* FLOW (how it works) */
.flow{
  max-width:1180px;margin:0 auto;position:relative;
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
}
.flow-line{
  position:absolute;top:27px;left:12.5%;right:12.5%;height:1px;
  background:var(--border-strong);z-index:0;overflow:hidden;
}
.flow-line::after{
  content:'';position:absolute;top:0;left:-30%;width:30%;height:100%;
  background:linear-gradient(90deg,transparent,var(--signal),transparent);
  animation:travel 3.5s linear infinite;
}
@keyframes travel{to{left:130%}}
.flow-step{position:relative;z-index:1;padding:0 20px;text-align:center}
.flow-num{
  width:54px;height:54px;border-radius:50%;background:var(--void-2);
  border:1px solid var(--border-strong);
  display:flex;align-items:center;justify-content:center;margin:0 auto 20px;
  font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--signal);
}
.flow-step h3{font-size:16px;font-weight:600;margin-bottom:8px}

/* DAMP & MOULD SECTION */
.damp-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.damp-feats{list-style:none;margin-bottom:22px}
.damp-feats li{
  font-size:14px;color:var(--text-dim);padding:10px 0 10px 22px;position:relative;
  border-top:1px solid var(--border);
}
.damp-feats li:first-child{border-top:none}
.damp-feats li::before{content:'';position:absolute;left:0;top:18px;width:6px;height:6px;background:var(--signal);border-radius:50%}
.damp-callout{
  background:var(--signal-dim);border:1px solid var(--signal-line);border-radius:10px;
  padding:16px 18px;font-size:13.5px;color:var(--text-dim);line-height:1.55;max-width:520px;
}
.damp-callout strong{color:var(--text);font-weight:600}
.damp-readout{
  background:var(--void);border:1px solid var(--border-strong);border-radius:var(--radius);
  padding:18px 20px;
}
.damp-readout-row{
  display:flex;justify-content:space-between;align-items:center;
  padding:9px 0;border-top:1px solid var(--border);font-size:13.5px;
}
.damp-readout-row:first-child{border-top:none}
.damp-readout-row span{color:var(--text-dim)}
.damp-readout-row strong{font-family:'IBM Plex Mono',monospace;font-weight:500}
.risk-low{color:var(--signal)}
.risk-high{color:var(--alert)}
.flow-step p{font-size:13.5px;color:var(--text-dim)}

/* PRICING */
.pricing-grid{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.custom-tier{
  max-width:1180px;margin:40px auto 0;
  background:linear-gradient(135deg,var(--void-3),var(--void-2));
  border:1px solid var(--signal-line);border-radius:var(--radius);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.custom-tier .btn{flex-shrink:0}
.price-card{
  background:var(--void-2);border:1px solid var(--border);border-radius:var(--radius);
  padding:32px 28px;display:flex;flex-direction:column;
}
.price-card.featured{border-color:var(--signal-line);background:linear-gradient(180deg,var(--void-3),var(--void-2))}
.price-tier{font-size:12px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.06em;font-family:'IBM Plex Mono',monospace;margin-bottom:14px}
.price-amount{font-family:'Space Grotesk',sans-serif;font-size:38px;font-weight:600;margin-bottom:4px}
.price-amount span{font-size:14px;color:var(--text-dim);font-family:'IBM Plex Sans',sans-serif;font-weight:400}
.price-desc{font-size:13px;color:var(--text-dim);margin-bottom:24px}
.price-feats{list-style:none;flex:1;margin-bottom:24px}
.price-feats li{
  font-size:13.5px;color:var(--text-dim);padding:9px 0;border-top:1px solid var(--border);
  display:flex;gap:10px;align-items:baseline;
}
.price-feats li:first-child{border-top:none}
.price-feats li::before{content:'';width:5px;height:5px;background:var(--signal);border-radius:50%;flex-shrink:0;transform:translateY(-2px)}

/* LOGIN MODAL */
.modal-overlay{
  position:fixed;inset:0;z-index:1000;
  background:rgba(4,10,12,.75);backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;padding:20px;
}
.modal-overlay.open{display:flex}
.modal{
  width:100%;max-width:400px;background:var(--void-2);
  border:1px solid var(--border-strong);border-radius:var(--radius);
  padding:36px 32px;position:relative;
  box-shadow:0 30px 80px rgba(0,0,0,.5);
}
.modal-close{
  position:absolute;top:18px;right:18px;width:28px;height:28px;
  border-radius:6px;border:1px solid var(--border);background:transparent;
  color:var(--text-dim);cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;
}
.modal-close:hover{color:var(--text);border-color:var(--border-strong)}
.modal h3{font-size:20px;margin-bottom:6px}
.modal-sub{font-size:13px;color:var(--text-dim);margin-bottom:26px}
.field{margin-bottom:16px}
.field label{display:block;font-size:12px;color:var(--text-dim);margin-bottom:7px;font-family:'IBM Plex Mono',monospace;text-transform:uppercase;letter-spacing:.05em}
.field input{
  width:100%;padding:11px 13px;background:var(--void);
  border:1px solid var(--border-strong);border-radius:7px;color:var(--text);font-size:14px;
  font-family:'IBM Plex Sans',sans-serif;
}
.field input:focus{outline:none;border-color:var(--signal)}
.field input:-webkit-autofill,
.field input:-webkit-autofill:hover,
.field input:-webkit-autofill:focus{
  -webkit-text-fill-color:var(--text);
  -webkit-box-shadow:0 0 0px 1000px var(--void) inset;
  transition:background-color 9999s ease-in-out 0s;
}
.modal .btn{width:100%;justify-content:center;margin-top:8px}
.modal-status{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--signal);margin-top:14px;text-align:center;height:14px}

/* FOOTER */
footer{border-top:1px solid var(--border);padding:56px 32px 28px;position:relative;z-index:1;background:var(--void-2)}
.footer-grid{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:36px}
.footer-brand .name{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:15px;margin-bottom:10px}
.footer-brand .name span{color:var(--signal)}
.footer-brand p{font-size:13px;color:var(--text-dim);max-width:280px;line-height:1.6}
.footer-col h4{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);font-family:'IBM Plex Mono',monospace;margin-bottom:16px}
.footer-col a{display:block;font-size:13.5px;color:var(--text-dim);margin-bottom:11px;transition:color .15s}
.footer-col a:hover{color:var(--signal)}
.footer-bottom{
  max-width:1180px;margin:0 auto;padding-top:24px;border-top:1px solid var(--border);
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;
}
.footer-bottom .meta{font-size:12px;color:var(--text-faint);font-family:'IBM Plex Mono',monospace}

@media(max-width:860px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
}

@media(max-width:860px){
  .hero{grid-template-columns:1fr;padding-top:60px}
  .hero h1{font-size:36px}
  .sonar{max-width:320px;margin:40px auto 0}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:none}
  .flow{grid-template-columns:1fr;gap:36px}
  .flow-line{display:none}
  .pricing-grid{grid-template-columns:1fr}
  .damp-grid{grid-template-columns:1fr;gap:32px}
  .custom-tier{flex-direction:column;align-items:flex-start;text-align:left;padding:28px 24px}
  .custom-tier .btn{width:100%;justify-content:center}
  .nav-links{display:none}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:0.001s !important;animation-iteration-count:1 !important}
}

/* ══════════════════════════════════
   PAGE HERO (Solutions / Pricing / Contact)
   ══════════════════════════════════ */
.page-hero{padding:80px 32px 60px;position:relative;z-index:1}
.page-hero .wrap-narrow{max-width:760px;margin:0 auto;text-align:center}
.page-hero h1{font-size:42px;font-weight:600;line-height:1.15;margin-bottom:16px}
.page-hero h1 em{font-style:normal;color:var(--signal)}
.page-hero p{color:var(--text-dim);font-size:16px}

/* ══════════════════════════════════
   SOLUTIONS PAGE
   ══════════════════════════════════ */
.solution-block{max-width:1180px;margin:0 auto;padding:70px 32px;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;position:relative;z-index:1}
.solution-block.reverse{grid-template-columns:1fr 1fr}
.solution-block.reverse .solution-visual{order:-1}
.solution-block h2{font-size:28px;margin-bottom:16px}
.solution-block p{color:var(--text-dim);font-size:15px;margin-bottom:20px}
.solution-feats{list-style:none}
.solution-feats li{font-size:14px;color:var(--text-dim);padding:10px 0;border-top:1px solid var(--border);position:relative;padding-left:20px}
.solution-feats li:first-child{border-top:none}
.solution-feats li::before{content:'';position:absolute;left:0;top:18px;width:6px;height:6px;background:var(--signal);border-radius:50%}
.solution-visual{
  background:var(--void-2);border:1px solid var(--border-strong);border-radius:var(--radius);
  padding:28px;min-height:280px;display:flex;flex-direction:column;justify-content:center;gap:14px;
}
.sensor-spec{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-top:1px solid var(--border)}
.sensor-spec:first-child{border-top:none}
.sensor-spec .name{font-size:13.5px;color:var(--text)}
.sensor-spec .use{font-size:11.5px;color:var(--text-faint);font-family:'IBM Plex Mono',monospace}

.usecase-grid{max-width:1180px;margin:0 auto;padding:0 32px 90px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;position:relative;z-index:1}
.usecase-card{background:var(--void-2);border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.usecase-card .tag{font-family:'IBM Plex Mono',monospace;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--signal);margin-bottom:12px;display:block}
.usecase-card h3{font-size:17px;margin-bottom:10px}
.usecase-card p{font-size:13.5px;color:var(--text-dim)}

/* ══════════════════════════════════
   CONTACT PAGE
   ══════════════════════════════════ */
.contact-grid{max-width:1180px;margin:0 auto;padding:0 32px 100px;display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;position:relative;z-index:1}
.contact-grid > div{min-width:0}
.contact-card{background:var(--void-2);border:1px solid var(--border);border-radius:var(--radius);padding:28px;margin-bottom:16px}
.contact-card .label{font-family:'IBM Plex Mono',monospace;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);margin-bottom:10px}
.contact-card a.big-link{font-size:19px;font-weight:600;color:var(--signal);display:block;margin-bottom:4px;word-break:break-word;overflow-wrap:anywhere}
.contact-card a.big-link:hover{color:var(--blue-dark,#75EFFF);text-decoration:underline}
.contact-card .sub{font-size:13px;color:var(--text-dim)}
.contact-form{background:var(--void-2);border:1px solid var(--border);border-radius:var(--radius);padding:34px}
.contact-form h3{font-size:19px;margin-bottom:6px}
.contact-form .form-sub{font-size:13.5px;color:var(--text-dim);margin-bottom:26px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field textarea{
  width:100%;padding:11px 13px;background:var(--void);
  border:1px solid var(--border-strong);border-radius:7px;color:var(--text);font-size:14px;
  font-family:'IBM Plex Sans',sans-serif;resize:vertical;min-height:110px;
}
.field textarea:focus{outline:none;border-color:var(--signal)}
.field select{
  width:100%;padding:11px 13px;background:var(--void);
  border:1px solid var(--border-strong);border-radius:7px;color:var(--text);font-size:14px;
  font-family:'IBM Plex Sans',sans-serif;
}
.form-success{
  display:none;background:var(--signal-dim);border:1px solid var(--signal-line);border-radius:8px;
  padding:14px 16px;font-size:13.5px;color:var(--text);margin-top:14px;
}
.form-success.show{display:block}

@media(max-width:860px){
  .solution-block{grid-template-columns:1fr;padding:50px 24px;gap:32px}
  .solution-block.reverse{grid-template-columns:1fr}
  .solution-block.reverse .solution-visual{order:0}
  .usecase-grid{grid-template-columns:1fr;padding:0 24px 60px}
  .contact-grid{grid-template-columns:1fr;padding:0 24px 60px}
  .form-row{grid-template-columns:1fr}
  .page-hero h1{font-size:30px}
}

/* ══════════════════════════════════
   MOBILE NAV (marketing pages)
   ══════════════════════════════════ */
.mobile-nav-toggle{display:none;background:transparent;border:1px solid var(--border-strong);border-radius:7px;width:38px;height:38px;align-items:center;justify-content:center;color:var(--text);cursor:pointer}
.mobile-nav-panel{
  display:none;position:fixed;top:65px;left:0;right:0;z-index:199;
  background:var(--void-2);border-bottom:1px solid var(--border);
  padding:18px 24px 24px;flex-direction:column;gap:4px;
}
.mobile-nav-panel.open{display:flex}
.mobile-nav-panel a{padding:12px 4px;font-size:15px;color:var(--text);border-bottom:1px solid var(--border)}
.mobile-nav-panel .btn{margin-top:12px;justify-content:center}

@media(max-width:860px){
  .nav-links{display:none}
  .mobile-nav-toggle{display:flex}
  .nav-cta .btn-ghost{display:none}
}
@media(min-width:861px){
  .mobile-nav-panel{display:none !important}
}