/* ==========================================================================
   B MATRIX PROJECTS — Design tokens
   Palette: navy #10162A / #171f38, orange #f5821f / #ffb066, ice white #f6f7fb
   Type: Space Grotesk (display) + Inter (body) + JetBrains Mono (data/labels)
   Signature: animated PCB circuit traces (embedded-systems motif) in hero
   ========================================================================== */

:root{
  --navy-950:#0c1122;
  --navy-900:#10162a;
  --navy-800:#171f38;
  --navy-700:#212b4a;
  --navy-600:#2e3a5f;
  --ink:#0c1122;
  --slate:#8a92ab;
  --slate-light:#b7bdd1;
  --ice:#f6f7fb;
  --white:#ffffff;

  --orange-700:#c96412;
  --orange:#f5821f;
  --orange-500:#f7941d;
  --orange-300:#ffb066;
  --orange-100:#ffe4c2;

  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'JetBrains Mono', monospace;

  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:26px;

  --shadow-soft: 0 20px 45px -18px rgba(16,22,42,0.35);
  --shadow-card: 0 12px 30px -14px rgba(16,22,42,0.18);

  --container: 1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
}

body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--ice);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--navy-900);
  margin:0 0 .5em;
  line-height:1.15;
  letter-spacing:-0.01em;
}

p{ margin:0 0 1em; color:var(--slate); }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
img{ max-width:100%; display:block; }
button{ font-family:inherit; cursor:pointer; }
input,select,textarea{ font-family:inherit; }

.wrap{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

.text-orange{ color:var(--orange); }
.hide-sm{ }

::selection{ background:var(--orange-300); color:var(--navy-900); }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible{
  outline:2.5px solid var(--orange);
  outline-offset:3px;
  border-radius:4px;
}

/* ==========================================================================
   Page-load PCB sweep (signature element, subtle, one-time)
   ========================================================================== */
.pcb-sweep{
  position:fixed; inset:0; z-index:9999; pointer-events:none;
  background:var(--navy-950);
  animation: sweepOut 0.9s ease forwards 0.15s;
}
.pcb-sweep::after{
  content:''; position:absolute; inset:0;
  background-image:
    linear-gradient(var(--orange) 1px, transparent 1px),
    linear-gradient(90deg, var(--orange) 1px, transparent 1px);
  background-size:38px 38px;
  opacity:0.08;
}
@keyframes sweepOut{
  0%{ clip-path: inset(0 0 0 0); opacity:1; }
  100%{ clip-path: inset(0 0 100% 0); opacity:1; }
}

/* ==========================================================================
   Top utility bar
   ========================================================================== */
.topbar{
  background:var(--navy-950);
  color:var(--slate-light);
  font-size:.8rem;
}
.topbar-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:8px 24px;
  gap:16px;
}
.topbar-left, .topbar-right{ display:flex; align-items:center; gap:20px; }
.topbar a{ color:var(--slate-light); transition:color .2s; }
.topbar a:hover{ color:var(--orange-300); }
.topbar i{ color:var(--orange-500); margin-right:6px; }
.social-mini{ display:flex; gap:12px; }
.social-mini a{
  width:26px; height:26px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  background:rgba(255,255,255,0.06);
  transition:background .2s, transform .2s;
}
.social-mini a:hover{ background:var(--orange); transform:translateY(-2px); color:var(--navy-950); }
.social-mini i{ margin:0; color:inherit; font-size:.75rem; }

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header{
  position:sticky; top:0; z-index:500;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(16,22,42,0.06);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 24px;
  gap:20px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{ width:44px; height:44px; flex:none; }
.gear-b{ width:100%; height:100%; }
.gear-ring{ fill:none; stroke:var(--navy-900); stroke-width:5; }
.gear-teeth{ fill:var(--orange); }
.gear-letter{
  font-family:var(--font-display); font-weight:700; font-size:34px;
  fill:var(--navy-900);
}
.brand-text{ display:flex; flex-direction:column; line-height:1.1; }
.brand-text strong{
  font-family:var(--font-display); font-weight:700; font-size:1.15rem;
  letter-spacing:.02em; color:var(--navy-900);
}
.brand-text em{
  font-style:normal; font-size:.62rem; letter-spacing:.14em;
  text-transform:uppercase; color:var(--orange-700); font-weight:600;
}

.main-nav{ display:flex; align-items:center; gap:30px; }
.main-nav a{
  font-size:.92rem; font-weight:600; color:var(--navy-800);
  position:relative; padding:6px 0;
  transition:color .2s;
}
.main-nav a::after{
  content:''; position:absolute; left:0; right:100%; bottom:0; height:2px;
  background:var(--orange); transition:right .25s ease;
}
.main-nav a:hover{ color:var(--orange-700); }
.main-nav a:hover::after{ right:0; }

.header-cta{ display:flex; align-items:center; gap:14px; }

.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:38px; height:38px; background:none; border:none; border-radius:8px;
}
.nav-toggle span{ display:block; height:2px; width:22px; background:var(--navy-900); border-radius:2px; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 22px;
  border-radius:999px;
  font-weight:600; font-size:.92rem;
  border:1.5px solid transparent;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space:nowrap;
}
.btn i{ font-size:1rem; }
.btn-primary{
  background:var(--orange);
  color:var(--white);
  box-shadow:0 10px 24px -10px rgba(245,130,31,0.55);
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 16px 30px -12px rgba(245,130,31,0.6); }

.btn-ghost{
  background:transparent;
  color:var(--navy-900);
  border-color:var(--navy-700);
}
.btn-ghost:hover{ background:var(--navy-900); color:var(--white); transform:translateY(-2px); }

.btn-whatsapp{
  background:#1fae5c;
  color:var(--white);
  padding:10px 18px;
  box-shadow:0 10px 22px -10px rgba(31,174,92,0.6);
}
.btn-whatsapp:hover{ transform:translateY(-2px); }

.btn-block{ width:100%; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  position:relative;
  background:var(--navy-900);
  overflow:hidden;
  padding:96px 0 70px;
}
.hero-bg{ position:absolute; inset:0; opacity:0.55; }
.circuit-svg{ width:100%; height:100%; }
.traces path{
  fill:none; stroke:var(--navy-600); stroke-width:2;
}
.nodes circle{ fill:var(--navy-600); }
.pulse{
  fill:var(--orange);
  filter:drop-shadow(0 0 6px var(--orange));
  offset-rotate:0deg;
}
.pulse-1{ offset-path: path('M0 120 H260 L300 160 V300 L340 340 H700'); animation: travel 6s linear infinite; }
.pulse-2{ offset-path: path('M1200 100 H900 L860 140 V260 L820 300 H520'); animation: travel 7.5s linear infinite 1.2s; }
.pulse-3{ offset-path: path('M1200 480 H980 L940 520 V680 H600'); animation: travel 5.5s linear infinite 2.4s; }
@keyframes travel{
  0%{ offset-distance:0%; opacity:0; }
  8%{ opacity:1; }
  92%{ opacity:1; }
  100%{ offset-distance:100%; opacity:0; }
}

.hero-inner{
  position:relative; z-index:2;
  display:grid; grid-template-columns:1.1fr 0.9fr;
  gap:40px; align-items:center;
}

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-mono); font-size:.72rem; letter-spacing:.12em;
  text-transform:uppercase; color:var(--orange-300);
  margin-bottom:18px;
}
.eyebrow-dark{ color:var(--orange-700); }
.eyebrow .dot{
  width:7px; height:7px; border-radius:50%; background:var(--orange);
  box-shadow:0 0 0 4px rgba(245,130,31,0.2);
}

.hero h1{
  color:var(--white);
  font-size:clamp(2.2rem, 4.4vw, 3.4rem);
  max-width:14ch;
  margin-bottom:20px;
}
.hero-sub{
  color:var(--slate-light);
  max-width:46ch;
  font-size:1.02rem;
}
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin:26px 0 42px; }
.hero .btn-ghost{ color:var(--white); border-color:var(--navy-600); }
.hero .btn-ghost:hover{ background:var(--white); color:var(--navy-900); }

.hero-stats{ display:flex; gap:38px; flex-wrap:wrap; }
.stat{ display:flex; flex-direction:column; }
.stat-num{
  font-family:var(--font-mono); font-weight:600; font-size:2rem;
  color:var(--white); display:inline;
}
.stat-plus{ font-family:var(--font-mono); font-weight:600; font-size:2rem; color:var(--orange-300); }
.stat-label{ font-size:.78rem; color:var(--slate); margin-top:2px; }

/* hero visual — orbiting chip */
.hero-visual{ position:relative; height:420px; display:flex; align-items:center; justify-content:center; }
.orbit-card{ position:relative; width:320px; height:320px; }
.orbit-ring{
  position:absolute; inset:0; border-radius:50%;
  border:1.5px dashed var(--navy-600);
}
.orbit-ring.r2{ inset:38px; border-style:solid; border-color:var(--navy-700); }
.chip-core{
  position:absolute; inset:110px;
  background:linear-gradient(145deg, var(--orange-500), var(--orange-700));
  border-radius:24px;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 25px 50px -16px rgba(245,130,31,0.55);
}
.chip-core i{ font-size:2.6rem; color:var(--white); }

.float-badge{
  position:absolute;
  background:var(--navy-800);
  border:1px solid var(--navy-600);
  color:var(--slate-light);
  font-size:.78rem; font-weight:600;
  padding:9px 14px; border-radius:999px;
  display:flex; align-items:center; gap:8px;
  box-shadow:var(--shadow-soft);
  animation: floaty 5s ease-in-out infinite;
}
.float-badge i{ color:var(--orange-500); }
.fb-1{ top:0; left:-10px; animation-delay:0s; }
.fb-2{ top:40px; right:-30px; animation-delay:.6s; }
.fb-3{ bottom:30px; left:-40px; animation-delay:1.2s; }
.fb-4{ bottom:-6px; right:0; animation-delay:1.8s; }
@keyframes floaty{
  0%,100%{ transform:translateY(0); }
  50%{ transform:translateY(-10px); }
}

/* ==========================================================================
   Marquee
   ========================================================================== */
.marquee{
  background:var(--orange);
  overflow:hidden;
  padding:14px 0;
}
.marquee-track{
  display:flex; gap:14px; white-space:nowrap;
  font-family:var(--font-mono); font-weight:600; font-size:.85rem;
  color:var(--navy-950);
  animation: scrollLeft 32s linear infinite;
  width:max-content;
}
@keyframes scrollLeft{
  from{ transform:translateX(0); }
  to{ transform:translateX(-50%); }
}

/* ==========================================================================
   Section basics
   ========================================================================== */
.section{ padding:96px 0; }
.section-tight{ padding:56px 0; }
.section-alt{ background:var(--white); }
.section-head{ max-width:640px; margin:0 auto 56px; text-align:center; }
.section-head h2{ font-size:clamp(1.8rem, 3vw, 2.4rem); }
.section-sub{ margin:0; }
.section-head .eyebrow{ justify-content:center; }

/* ==========================================================================
   Services rail (numbered — order reflects actual engagement sequence)
   ========================================================================== */
.services-rail{ position:relative; max-width:820px; margin:0 auto; }
.service-line{
  position:absolute; left:27px; top:10px; bottom:10px; width:2px;
  background:repeating-linear-gradient(to bottom, var(--orange-100) 0 6px, transparent 6px 12px);
}
.service-item{
  position:relative;
  display:flex; gap:24px; align-items:flex-start;
  padding:22px 0;
}
.service-num{
  position:relative; z-index:1;
  flex:none; width:56px; height:56px;
  background:var(--orange);
  color:var(--white);
  border-radius:16px;
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-weight:700; font-size:1.4rem;
  box-shadow:0 12px 24px -10px rgba(245,130,31,0.55);
}
.service-body h3{ font-size:1.15rem; margin-bottom:6px; }
.service-body p{ margin:0; max-width:56ch; }

/* ==========================================================================
   Process
   ========================================================================== */
.process-grid{
  display:flex; align-items:flex-start; justify-content:space-between;
  gap:12px; flex-wrap:wrap;
}
.process-step{ flex:1 1 180px; text-align:center; min-width:150px; }
.process-icon{
  width:66px; height:66px; margin:0 auto 14px;
  border-radius:50%;
  background:var(--navy-900);
  color:var(--orange-400, var(--orange-500));
  display:flex; align-items:center; justify-content:center;
  font-size:1.4rem;
}
.process-step h4{ font-size:1.05rem; margin-bottom:6px; }
.process-step p{ font-size:.88rem; margin:0; }
.process-arrow{ color:var(--orange-300); font-size:1.1rem; padding-top:20px; flex:none; }
@media (max-width:760px){ .process-arrow{ display:none; } }

/* ==========================================================================
   Domains
   ========================================================================== */
.domain-grid{
  display:grid; grid-template-columns:repeat(4, 1fr); gap:22px;
}
.domain-card{
  background:var(--ice);
  border:1px solid rgba(16,22,42,0.06);
  border-radius:var(--radius-md);
  padding:28px 24px;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.domain-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-card);
  border-color:var(--orange-300);
}
.domain-card-wide{ grid-column:span 2; }
.domain-icon{
  width:52px; height:52px; border-radius:14px;
  background:var(--navy-900); color:var(--orange-500);
  display:flex; align-items:center; justify-content:center;
  font-size:1.3rem; margin-bottom:16px;
}
.domain-card h3{ font-size:1.1rem; margin-bottom:8px; }
.domain-card p{ font-size:.9rem; margin-bottom:14px; }
.domain-tag{
  display:inline-block;
  font-family:var(--font-mono); font-size:.66rem; letter-spacing:.06em;
  color:var(--orange-700);
  background:var(--orange-100);
  padding:5px 10px; border-radius:999px;
}

@media (max-width:900px){
  .domain-grid{ grid-template-columns:repeat(2,1fr); }
  .domain-card-wide{ grid-column:span 2; }
}
@media (max-width:560px){
  .domain-grid{ grid-template-columns:1fr; }
  .domain-card-wide{ grid-column:span 1; }
}

/* ==========================================================================
   Why choose us
   ========================================================================== */
.why-section{ background:var(--navy-900); }
.why-grid{ display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.why-copy h2{ color:var(--white); }
.why-copy .section-sub, .why-copy p{ color:var(--slate-light); }
.why-list{ margin:28px 0 32px; display:flex; flex-direction:column; gap:14px; }
.why-list li{
  display:flex; align-items:center; gap:12px;
  color:var(--slate-light); font-weight:500; font-size:.98rem;
}
.why-list i{ color:var(--orange-500); font-size:1.1rem; }

.why-card{
  background:var(--navy-800);
  border:1px solid var(--navy-600);
  border-radius:var(--radius-lg);
  padding:14px;
  display:flex; flex-direction:column; gap:6px;
}
.why-card-row{
  display:flex; align-items:center; gap:16px;
  padding:16px;
  border-radius:var(--radius-sm);
  transition:background .2s;
}
.why-card-row:hover{ background:var(--navy-700); }
.why-card-row i{
  width:46px; height:46px; flex:none;
  background:var(--orange); color:var(--white);
  border-radius:12px;
  display:flex; align-items:center; justify-content:center;
  font-size:1.1rem;
}
.why-card-row strong{ display:block; color:var(--white); font-size:.96rem; }
.why-card-row span{ display:block; color:var(--slate); font-size:.82rem; margin-top:2px; }

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

/* ==========================================================================
   Projects / Tabs
   ========================================================================== */
.tabs{
  display:flex; flex-wrap:wrap; justify-content:center; gap:10px;
  margin-bottom:40px;
}
.tab{
  background:var(--ice);
  border:1.5px solid rgba(16,22,42,0.08);
  color:var(--navy-800);
  padding:9px 20px; border-radius:999px;
  font-weight:600; font-size:.86rem;
  transition:all .2s;
}
.tab:hover{ border-color:var(--orange-300); }
.tab.active{ background:var(--navy-900); color:var(--white); border-color:var(--navy-900); }

.project-grid{
  display:grid; grid-template-columns:repeat(3, 1fr); gap:22px;
}
.project-card{
  background:var(--ice);
  border:1px solid rgba(16,22,42,0.06);
  border-radius:var(--radius-md);
  padding:26px;
  transition:transform .25s ease, box-shadow .25s ease;
}
.project-card:hover{ transform:translateY(-5px); box-shadow:var(--shadow-card); }
.project-card-top{ display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:14px; }
.project-icon{
  width:46px; height:46px; border-radius:12px;
  background:var(--orange-100); color:var(--orange-700);
  display:flex; align-items:center; justify-content:center; font-size:1.15rem;
}
.project-badge{
  font-family:var(--font-mono); font-size:.64rem; letter-spacing:.06em;
  color:var(--navy-700); background:var(--white);
  border:1px solid rgba(16,22,42,0.1);
  padding:4px 9px; border-radius:999px;
  text-transform:uppercase;
}
.project-card h3{ font-size:1.02rem; margin-bottom:8px; }
.project-card p{ font-size:.88rem; margin:0; }

@media (max-width:900px){ .project-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:600px){ .project-grid{ grid-template-columns:1fr; } }

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-section{ background:var(--white); }
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:start; }

.contact-detail{
  display:flex; align-items:flex-start; gap:14px;
  margin-bottom:18px;
}
.contact-detail i{
  width:42px; height:42px; flex:none;
  background:var(--navy-900); color:var(--orange-500);
  border-radius:12px;
  display:flex; align-items:center; justify-content:center;
}
.contact-detail strong{ display:block; color:var(--navy-900); font-size:.92rem; }
.contact-detail span{ font-size:.88rem; color:var(--slate); }

.qr-box{
  margin-top:28px;
  display:inline-flex; align-items:center; gap:14px;
  padding:14px 20px;
  background:var(--ice);
  border:1.5px dashed var(--orange-300);
  border-radius:var(--radius-md);
}
.qr-visual{
  width:52px; height:52px;
  background:var(--navy-900); color:var(--orange-500);
  border-radius:10px;
  display:flex; align-items:center; justify-content:center; font-size:1.6rem;
}
.qr-box span{ font-size:.82rem; font-weight:600; color:var(--navy-800); }

.contact-form{
  background:var(--navy-900);
  border-radius:var(--radius-lg);
  padding:38px;
  box-shadow:var(--shadow-soft);
}
.contact-form h3{ color:var(--white); margin-bottom:22px; }
.form-row{ margin-bottom:18px; display:flex; flex-direction:column; gap:6px; }
.form-row-split{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:18px; }
.form-row-split > div{ display:flex; flex-direction:column; gap:6px; }
.contact-form label{
  font-size:.78rem; font-weight:600; color:var(--slate-light);
  text-transform:uppercase; letter-spacing:.05em;
}
.contact-form input, .contact-form select, .contact-form textarea{
  background:var(--navy-800);
  border:1.5px solid var(--navy-600);
  color:var(--white);
  padding:12px 14px;
  border-radius:10px;
  font-size:.92rem;
  resize:vertical;
  transition:border-color .2s;
}
.contact-form input::placeholder, .contact-form textarea::placeholder{ color:var(--slate); }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus{
  border-color:var(--orange);
  outline:none;
}
.contact-form select{ appearance:none; background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23f5821f'%3E%3Cpath d='M5.5 7.5l4.5 4.5 4.5-4.5' stroke='%23f5821f' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-repeat:no-repeat; background-position:right 14px center; }
.contact-form input.invalid, .contact-form select.invalid, .contact-form textarea.invalid{ border-color:#e2554b; }
.error-msg{ font-size:.76rem; color:#ff8b83; min-height:1em; }

.btn-block{ position:relative; margin-top:6px; }
.btn-spinner{
  display:none;
  width:16px; height:16px;
  border:2.5px solid rgba(255,255,255,0.4);
  border-top-color:var(--white);
  border-radius:50%;
  animation:spin .7s linear infinite;
}
.btn.is-loading .btn-label{ visibility:hidden; }
.btn.is-loading .btn-spinner{ display:block; position:absolute; left:50%; top:50%; margin:-8px 0 0 -8px; }
@keyframes spin{ to{ transform:rotate(360deg); } }

.form-status{
  margin:14px 0 0; font-size:.85rem; text-align:center; min-height:1.2em;
}
.form-status.success{ color:#4ade80; }
.form-status.error{ color:#ff8b83; }

@media (max-width:900px){
  .contact-grid{ grid-template-columns:1fr; }
  .form-row-split{ grid-template-columns:1fr; }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer{ background:var(--navy-950); color:var(--slate-light); padding-top:70px; }
.footer-grid{
  display:grid; grid-template-columns:1.6fr 1fr 1fr 1.2fr; gap:40px;
  padding-bottom:50px;
}
.footer-brand p{ color:var(--slate); font-size:.88rem; margin:16px 0 20px; max-width:36ch; }
.footer-col h4{
  color:var(--white); font-size:.85rem; text-transform:uppercase;
  letter-spacing:.08em; margin-bottom:16px;
}
.footer-col a{
  display:flex; align-items:center; gap:8px;
  color:var(--slate); font-size:.88rem;
  padding:6px 0; transition:color .2s;
}
.footer-col a:hover{ color:var(--orange-300); }
.footer-col i{ color:var(--orange-500); width:14px; }

.social-mini-lg a{ width:36px; height:36px; }

.footer-bottom{ border-top:1px solid var(--navy-800); padding:20px 0; }
.footer-bottom-inner{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px;
  font-size:.8rem; color:var(--slate);
}
.footer-tagline{ color:var(--orange-300); font-weight:600; }

@media (max-width:900px){
  .footer-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width:560px){
  .footer-grid{ grid-template-columns:1fr; }
}

/* ==========================================================================
   Floating WhatsApp + Back to top
   ========================================================================== */
.float-whatsapp{
  position:fixed; right:24px; bottom:24px; z-index:400;
  width:58px; height:58px; border-radius:50%;
  background:#1fae5c; color:var(--white);
  display:flex; align-items:center; justify-content:center;
  font-size:1.6rem;
  box-shadow:0 14px 30px -10px rgba(31,174,92,0.7);
  animation:pulseRing 2.4s ease-in-out infinite;
}
@keyframes pulseRing{
  0%,100%{ box-shadow:0 14px 30px -10px rgba(31,174,92,0.7), 0 0 0 0 rgba(31,174,92,0.4); }
  50%{ box-shadow:0 14px 30px -10px rgba(31,174,92,0.7), 0 0 0 10px rgba(31,174,92,0); }
}

.back-to-top{
  position:fixed; right:24px; bottom:92px; z-index:400;
  width:44px; height:44px; border-radius:50%;
  background:var(--navy-900); color:var(--white);
  border:none; display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:opacity .25s, transform .25s, visibility .25s;
}
.back-to-top.show{ opacity:1; visibility:visible; transform:translateY(0); }

/* ==========================================================================
   Responsive — nav + hero
   ========================================================================== */
@media (max-width:980px){
  .hero-inner{ grid-template-columns:1fr; }
  .hero-visual{ height:300px; order:-1; }
  .orbit-card{ width:240px; height:240px; }
  .chip-core{ inset:80px; }
}

@media (max-width:860px){
  .hide-sm{ display:none; }
  .main-nav{
    position:fixed; inset:64px 0 0 0; z-index:450;
    background:var(--white);
    flex-direction:column; align-items:flex-start; gap:0;
    padding:20px 24px;
    transform:translateX(100%);
    transition:transform .3s ease;
    overflow-y:auto;
  }
  .main-nav.open{ transform:translateX(0); }
  .main-nav a{ width:100%; padding:16px 0; border-bottom:1px solid rgba(16,22,42,0.06); }
  .nav-toggle{ display:flex; }
  .header-cta .btn-whatsapp span{ display:none; }
}

@media (max-width:640px){
  .hero{ padding:60px 0 50px; }
  .hero-stats{ gap:24px; }
  .section{ padding:64px 0; }
}