:root{
  --black:#0E1B14;
  --header-row:#163024;
  --cell-line:#234634;
  --formula-green:#4FA96F;
  --select-mint:#8FD9A8;
  --grid-ink:#DFF3E6;
  --near-white:#F2FBF5;
}

*{margin:0;padding:0;box-sizing:border-box;}

body{
  background-color:#0E1B14;
  color:#DFF3E6;
  font-size:16px;
  font-family:"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  line-height:1.7;
  overflow-x:hidden;
}

a{color:#8FD9A8;text-decoration:none;transition:color .2s ease;}
a:hover{color:#4FA96F;}

/* ============ FORMULA-BAR NAV ============ */
.formula-nav{
  position:sticky;
  top:0;
  z-index:100;
  background-color:#0E1B14;
}
.column-strip{
  height:22px;
  background-color:#163024;
  display:flex;
  align-items:center;
  border-bottom:1px solid #234634;
}
.column-strip span{
  flex:1;
  text-align:center;
  font-size:11px;
  color:#DFF3E6;
  letter-spacing:2px;
  font-weight:600;
  border-right:1px solid #234634;
}
.column-strip span:last-child{border-right:none;}
.nav-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  height:64px;
}
.cell-ref{
  width:38px;
  height:30px;
  background-color:#0E1B14;
  border:1px solid #4FA96F;
  border-radius:4px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#4FA96F;
  font-weight:700;
  font-size:14px;
  font-family:Consolas,Menlo,monospace;
}
.brand{
  color:#8FD9A8;
  font-weight:700;
  letter-spacing:.16em;
  font-size:21px;
}
.nav-links{
  display:flex;
  align-items:center;
  list-style:none;
}
.nav-links li{
  border-left:1px solid #234634;
}
.nav-links li:first-child{border-left:none;}
.nav-links a{
  display:block;
  padding:10px 16px;
  color:#DFF3E6;
  font-size:13px;
  letter-spacing:.06em;
  text-transform:uppercase;
  position:relative;
}
.nav-links a:hover{
  color:#4FA96F;
}
.nav-links a:hover::after{
  content:"";
  position:absolute;
  bottom:2px;
  left:20px;
  width:6px;
  height:6px;
  background-color:#4FA96F;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
}
.nav-toggle span{
  width:26px;
  height:3px;
  background-color:#8FD9A8;
  border-radius:2px;
}

/* ============ HERO ============ */
.activecell-hero{
  position:relative;
  background-color:#0E1B14;
  background-image:linear-gradient(#234634 1px,transparent 1px),linear-gradient(90deg,#234634 1px,transparent 1px);
  background-size:72px 72px;
  padding:96px 24px 110px;
  overflow:hidden;
}
.hero-inner{
  position:relative;
  max-width:860px;
  margin:0 auto;
  text-align:center;
}
.eyebrow{
  display:inline-block;
  background-color:#4FA96F;
  color:#0E1B14;
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  text-transform:uppercase;
  padding:8px 18px;
  border-radius:20px;
  margin-bottom:28px;
}
.activecell-hero h1{
  color:#F2FBF5;
  font-size:56px;
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.01em;
}
.activecell-hero h1 .green{
  color:#4FA96F;
}
.hero-sub{
  color:#DFF3E6;
  font-size:19px;
  max-width:680px;
  margin:24px auto 34px;
}
.hero-cta{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}
.btn{
  display:inline-block;
  padding:14px 32px;
  font-size:15px;
  font-weight:700;
  border-radius:6px;
  letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{
  background-color:#4FA96F;
  color:#0E1B14;
}
.btn-primary:hover{background-color:#5fbf83;color:#0E1B14;}
.btn-outline{
  background-color:transparent;
  border-color:#8FD9A8;
  color:#8FD9A8;
}
.btn-outline:hover{background-color:#8FD9A8;color:#0E1B14;}
.cell-outline{
  position:absolute;
  top:70px;
  left:50%;
  transform:translateX(-50%);
  width:min(900px,96%);
  height:calc(100% - 60px);
  border:2px solid #8FD9A8;
  border-radius:14px;
  pointer-events:none;
}
.cell-outline::before{
  content:"A1";
  position:absolute;
  top:-20px;
  left:-1px;
  background-color:#8FD9A8;
  color:#0E1B14;
  font-size:11px;
  font-weight:700;
  padding:2px 10px;
  border-radius:3px;
  font-family:Consolas,Menlo,monospace;
}
.cell-outline::after{
  content:"";
  position:absolute;
  bottom:-9px;
  right:-9px;
  width:18px;
  height:18px;
  background-color:#8FD9A8;
  border-radius:2px;
}

/* ============ FUNCTION STRIPS ============ */
.function-strips{
  background-color:#0E1B14;
  padding:90px 24px;
}
.section-title{
  color:#8FD9A8;
  font-size:36px;
  font-weight:800;
  text-align:center;
  margin-bottom:16px;
}
.section-sub{
  color:#DFF3E6;
  text-align:center;
  max-width:720px;
  margin:0 auto 50px;
  font-size:17px;
}
.strip{
  max-width:1100px;
  margin:0 auto 12px;
  background-color:#163024;
  border:1px solid #234634;
  border-radius:10px;
  padding:28px;
  display:grid;
  grid-template-columns:130px 1fr 150px;
  gap:28px;
  align-items:start;
}
.strip.stepped-1{margin-left:calc((100% - 1100px)/2 + 28px);}
.strip.stepped-2{margin-left:calc((100% - 1100px)/2 + 56px);}
.strip.stepped-3{margin-left:calc((100% - 1100px)/2 + 84px);}
@media(max-width:1200px){
  .strip.stepped-1,.strip.stepped-2,.strip.stepped-3{margin-left:auto;}
}
.function-chip{
  display:inline-block;
  padding:10px 16px;
  border:1px solid #4FA96F;
  border-radius:8px;
  color:#8FD9A8;
  font-weight:700;
  font-size:14px;
  letter-spacing:.08em;
  font-family:Consolas,Menlo,monospace;
  background-color:#0E1B14;
  white-space:nowrap;
}
.strip h3{
  color:#F2FBF5;
  font-size:23px;
  margin-bottom:10px;
}
.strip p{
  color:#DFF3E6;
  font-size:15.5px;
}
.meter-block{display:flex;flex-direction:column;gap:8px;justify-content:center;}
.meter{
  height:8px;
  background-color:#0E1B14;
  border-radius:4px;
  overflow:hidden;
}
.meter span{display:block;height:100%;background-color:#8FD9A8;border-radius:4px;}

/* ============ AUDIT BAND ============ */
.audit-band{
  background-color:#4FA96F;
  padding:64px 24px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.audit-item{
  text-align:center;
  border-left:1px solid #0E1B14;
  padding:10px;
}
.audit-item:first-child{border-left:none;}
.audit-num{
  color:#0E1B14;
  font-size:52px;
  font-weight:800;
  line-height:1;
}
.audit-label{
  color:#0E1B14;
  font-size:13px;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.08em;
  margin-top:10px;
}

/* ============ STATEMENT BAND ============ */
.statement-band{
  background-color:#163024;
  padding:80px 24px;
}
.statement-inner{
  max-width:820px;
  margin:0 auto;
  border-left:4px solid #8FD9A8;
  padding-left:30px;
}
.statement-inner p{
  color:#F2FBF5;
  font-size:27px;
  line-height:1.5;
  font-weight:700;
}
.statement-inner .attr{
  color:#8FD9A8;
  font-size:14px;
  letter-spacing:.06em;
  text-transform:uppercase;
  margin-top:18px;
  font-weight:600;
}

/* ============ CTA BAND ============ */
.cta-band{
  background-color:#0E1B14;
  background-image:linear-gradient(#234634 1px,transparent 1px),linear-gradient(90deg,#234634 1px,transparent 1px);
  background-size:72px 72px;
  padding:90px 24px;
  text-align:center;
}
.cta-band h2{
  color:#8FD9A8;
  font-size:36px;
  font-weight:800;
  margin-bottom:14px;
}
.cta-band p{
  color:#DFF3E6;
  font-size:17px;
  max-width:640px;
  margin:0 auto 34px;
}

/* ============ STATUSBAR FOOTER ============ */
.statusbar-footer{
  background-color:#163024;
  position:relative;
  z-index:1;
}
.row-rail{
  height:24px;
  display:flex;
  align-items:center;
  border-bottom:1px solid #234634;
}
.row-rail span{
  flex:1;
  text-align:center;
  color:#DFF3E6;
  font-size:12px;
  border-right:1px solid #234634;
}
.footer-inner{
  max-width:900px;
  margin:0 auto;
  text-align:center;
  padding:56px 24px 30px;
  position:relative;
  z-index:1;
}
.footer-brand{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  margin-bottom:20px;
}
.footer-brand .cell-ref{width:34px;height:26px;font-size:12px;}
.footer-brand .wordmark{
  color:#8FD9A8;
  font-weight:700;
  letter-spacing:.16em;
  font-size:19px;
}
.footer-links{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:6px 24px;
  margin-bottom:28px;
}
.footer-links a{
  color:#DFF3E6;
  font-size:14px;
}
.footer-links a:hover{color:#4FA96F;}
.sheet-tabs{
  display:flex;
  justify-content:center;
  margin-bottom:26px;
}
.sheet-tab{
  padding:8px 22px;
  background-color:#0E1B14;
  color:#DFF3E6;
  font-size:12px;
  border-top:3px solid #8FD9A8;
  margin:0 4px;
  border-radius:4px 4px 0 0;
  letter-spacing:.04em;
}
.sheet-tab.active{
  border-top-color:#4FA96F;
  color:#4FA96F;
  font-weight:700;
}
.legal-line{
  color:#DFF3E6;
  font-size:13.5px;
  line-height:1.9;
  padding-top:6px;
}

/* ============ PAGE HERO (secondary pages) ============ */
.page-hero{
  background-color:#0E1B14;
  background-image:linear-gradient(#234634 1px,transparent 1px),linear-gradient(90deg,#234634 1px,transparent 1px);
  background-size:72px 72px;
  text-align:center;
  padding:80px 24px;
}
.page-hero h1{
  color:#F2FBF5;
  font-size:46px;
  font-weight:800;
}
.page-hero h1 .green{color:#4FA96F;}
.page-hero p{
  color:#DFF3E6;
  max-width:640px;
  margin:16px auto 0;
  font-size:18px;
}

/* services grid */
.services-wrap{background-color:#0E1B14;padding:70px 24px;}
.services-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.svc-card{background-color:#163024;border:1px solid #234634;border-radius:10px;padding:28px;}
.svc-card h3{color:#8FD9A8;font-size:20px;margin-bottom:12px;}
.svc-card p{color:#DFF3E6;font-size:15px;}
.process{background-color:#163024;border-top:1px solid #234634;padding:70px 24px;}
.process-inner{max-width:1000px;margin:0 auto;}
.process-inner h2{color:#8FD9A8;font-size:30px;text-align:center;margin-bottom:40px;}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{border:1px solid #234634;background-color:#0E1B14;border-radius:8px;padding:24px;}
.step .chip{color:#4FA96F;font-family:Consolas,Menlo,monospace;font-size:13px;font-weight:700;}
.step h4{color:#F2FBF5;margin:8px 0;}
.step p{color:#DFF3E6;font-size:14px;}
.services-cta{background-color:#4FA96F;text-align:center;padding:70px 24px;}
.services-cta h2{color:#0E1B14;font-size:34px;font-weight:800;}
.services-cta p{color:#0E1B14;margin:12px auto 30px;max-width:560px;font-size:16px;}

/* contact */
.contact-wrap{background-color:#0E1B14;padding:70px 24px;}
.contact-grid{max-width:1000px;margin:0 auto;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;}
.contact-form{display:flex;flex-direction:column;gap:18px;}
.contact-form label{color:#8FD9A8;font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:6px;display:block;}
.contact-form input,.contact-form textarea{
  width:100%;
  background-color:#0E1B14;
  border:1px solid #234634;
  border-radius:6px;
  padding:13px 15px;
  color:#F2FBF5;
  font-size:15px;
  font-family:inherit;
}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:#4FA96F;}
.form-msg{font-size:14px;min-height:20px;}
.form-msg.ok{color:#8FD9A8;}
.form-msg.err{color:#e0857f;}
.contact-panel{background-color:#163024;border:1px solid #234634;border-radius:10px;padding:30px;}
.contact-panel h2{color:#8FD9A8;font-size:22px;margin-bottom:18px;}
.contact-panel p{color:#DFF3E6;font-size:15px;margin-bottom:14px;}
.contact-panel .row{color:#DFF3E6;font-size:15px;padding:8px 0;border-bottom:1px solid #234634;}
.contact-panel .row b{color:#F2FBF5;}
.faq{color:#DFF3E6;margin-top:50px;max-width:820px;margin-left:auto;margin-right:auto;}
.faq h2{color:#8FD9A8;font-size:26px;margin-bottom:24px;text-align:center;}
.accordion{background-color:#163024;border:1px solid #234634;border-radius:8px;margin-bottom:12px;overflow:hidden;}
.accordion .q{
  padding:18px 22px;
  color:#F2FBF5;
  font-weight:700;
  cursor:pointer;
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.accordion .q::after{content:"+";color:#4FA96F;font-size:22px;font-weight:400;}
.accordion.open .q::after{content:"-";}
.accordion .a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
  color:#DFF3E6;
  font-size:15px;
}
.accordion.open .a{max-height:400px;}
.accordion .a-inner{padding:0 22px 20px;}

.fade-up{
  opacity:1;
  transform:none;
}

@media(max-width:860px){
  .nav-links{
    display:none;
    position:absolute;
    top:64px;
    left:0;
    right:0;
    background-color:#163024;
    flex-direction:column;
    border-bottom:1px solid #234634;
  }
  .nav-links.open{display:flex;}
  .nav-links li{border-left:none;border-bottom:1px solid #234634;width:100%;}
  .nav-links a{padding:16px 24px;}
  .nav-toggle{display:flex;}
  .activecell-hero h1{font-size:40px;}
  .strip{grid-template-columns:1fr;gap:18px;}
  .meter-block{flex-direction:row;}
  .meter{flex:1;}
  .audit-band{grid-template-columns:1fr 1fr;gap:0;}
  .audit-item{border-bottom:1px solid #0E1B14;}
  .steps{grid-template-columns:1fr 1fr;}
  .services-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
}
@media(max-width:520px){
  .audit-num{font-size:38px;}
  .steps{grid-template-columns:1fr;}
  .footer-links{gap:8px 14px;}
}