:root{
  --ink-900:#06090F;
  --deep-blue:#0B1730;
  --deep-blue-2:#0E2050;
  --signal-blue:#2F7CF6;
  --signal-blue-dark:#1E5FD1;
  --cyan-glow:#4FD8FF;
  --violet-glow:#9B5CFF;
  --ink-700:#16203A;
  --radius-lg: 22px;
  --radius-md: 14px;
  --maxw: 1180px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color:#fff;
  background:var(--ink-900);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.display{
  font-family:'Space Grotesk', 'Inter', sans-serif;
  font-weight:600;
  line-height:1.08;
  margin:0;
  color:inherit;
}
p{ margin:0; line-height:1.6; }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
.wrap{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 32px;
}
@media (max-width:640px){
  .wrap{ padding:0 22px; }
}

/* ---------- HEADER / HERO ---------- */
.hero{
  position:relative;
  background:
    linear-gradient(100deg, rgba(4,7,14,0.92) 0%, rgba(6,10,20,0.55) 46%, rgba(6,10,20,0.25) 72%),
    url('/images/bg-network-1.jpg') center 38% / cover no-repeat;
  color:#F4F7FF;
  padding-bottom:150px;
}
nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:26px 0 0;
}
.logo{
  font-family:'Space Grotesk', sans-serif;
  font-weight:700;
  font-size:1.28rem;
  letter-spacing:0.2px;
  color:#fff;
}
.nav-links{
  display:flex;
  gap:36px;
  font-size:0.95rem;
  color:#C9D5EE;
}
.nav-links a:hover{ color:#fff; }
.nav-cta{
  background:var(--signal-blue);
  color:#fff;
  padding:10px 20px;
  border-radius:999px;
  font-size:0.92rem;
  font-weight:500;
  white-space:nowrap;
}
.nav-cta:hover{ background:var(--signal-blue-dark); }
@media (max-width:760px){
  .nav-links{ display:none; }
}

.hero-body{
  padding-top:min(15vw, 130px);
  max-width:620px;
}
.hero-body h1{
  font-size:clamp(2.1rem, 4.6vw, 3.35rem);
  color:#fff;
}
.hero-body p{
  margin-top:22px;
  font-size:1.08rem;
  color:#C9D5EE;
  max-width:46ch;
}
.btn-primary{
  display:inline-block;
  margin-top:34px;
  background:var(--signal-blue);
  color:#fff;
  padding:14px 28px;
  border:none;
  border-radius:999px;
  font-weight:500;
  font-size:1rem;
  font-family:'Inter', sans-serif;
  cursor:pointer;
}
.btn-primary:hover{ background:var(--signal-blue-dark); }
.btn-primary:disabled{ opacity:0.6; cursor:default; }

.wave-divider{
  position:absolute;
  left:0; right:0; bottom:-1px;
  line-height:0;
  z-index:2;
}
.wave-divider svg{ width:100%; height:auto; display:block; }

/* ---------- SERVICES ---------- */
.services{
  position:relative;
  padding:96px 0 108px;
  background:
    linear-gradient(200deg, rgba(5,8,16,0.88) 0%, rgba(6,10,22,0.72) 55%, rgba(6,10,22,0.85) 100%),
    url('/images/bg-network-2.jpg') center 55% / cover no-repeat;
  overflow:hidden;
}
.section-head{
  max-width:560px;
  margin-bottom:52px;
}
.section-head .kicker{
  color:var(--cyan-glow);
  font-weight:600;
  font-size:0.95rem;
}
.section-head h2{
  margin-top:10px;
  font-size:clamp(1.7rem, 3vw, 2.3rem);
  color:#fff;
}
.section-head p{
  margin-top:16px;
  color:#B9C6E6;
  font-size:1.02rem;
  max-width:56ch;
}

.service-grid{
  columns:2;
  column-gap:20px;
}
.card{
  background:rgba(255,255,255,0.07);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,0.14);
  border-radius:var(--radius-md);
  padding:28px 26px;
  box-shadow:0 8px 30px rgba(2,5,12,0.25);
  break-inside:avoid;
  -webkit-column-break-inside:avoid;
  margin-bottom:20px;
}
.card h3{
  font-size:1.08rem;
  font-weight:600;
  color:#fff;
}
.card p{
  margin-top:10px;
  font-size:0.94rem;
  color:#C3D0EC;
}
.card-icon{
  width:38px; height:38px;
  margin-bottom:16px;
}

.card-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  padding:0;
  background:none;
  border:none;
  font-family:'Inter', sans-serif;
  font-size:0.88rem;
  font-weight:600;
  color:var(--cyan-glow);
  cursor:pointer;
}
.card.featured .card-toggle{ color:#fff; }
.card-toggle-icon{
  width:16px; height:16px;
  border-radius:50%;
  border:1px solid currentColor;
  position:relative;
  flex-shrink:0;
  transition:transform 0.3s ease;
}
.card-toggle-icon::before,
.card-toggle-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  top:50%; left:50%;
  transform:translate(-50%,-50%);
}
.card-toggle-icon::before{ width:8px; height:1.4px; }
.card-toggle-icon::after{ width:1.4px; height:8px; }
.card[data-open="true"] .card-toggle-icon{ transform:rotate(45deg); }

.card-more-wrap{
  max-height:0;
  overflow:hidden;
  transition:max-height 0.4s ease;
}
.card-more-inner{ overflow:hidden; }
.card-more{
  margin-top:14px;
  font-size:0.92rem;
  color:#C3D0EC;
}
.card-more + .card-more{ margin-top:10px; }
.card-more-inner > .card-more:first-child{
  padding-top:14px;
  border-top:1px solid rgba(255,255,255,0.16);
}
.card.featured .card-more{ color:#CBD8F2; }
.card.featured .card-more-inner > .card-more:first-child{ border-top-color:rgba(255,255,255,0.2); }
.card.featured{
  background:linear-gradient(150deg, var(--ink-700) 0%, var(--deep-blue-2) 100%);
  border:none;
  color:#fff;
  padding:34px 32px;
  position:relative;
  overflow:hidden;
}
.card.featured::after{
  content:"";
  position:absolute;
  width:340px; height:340px;
  right:-120px; bottom:-140px;
  background:radial-gradient(circle, rgba(79,216,255,0.28), transparent 70%);
}
.card.featured h3{ color:#fff; font-size:1.35rem; }
.card.featured p{ color:#CBD8F2; font-size:1rem; max-width:44ch; }

@media (max-width:760px){
  .service-grid{ columns:1; }
}

/* ---------- APPROACH ---------- */
.approach{
  position:relative;
  background:
    linear-gradient(160deg, rgba(11,23,48,0.88) 0%, rgba(6,9,15,0.9) 100%),
    url('/images/bg-network-1.jpg') center 60% / cover no-repeat;
  color:#fff;
  padding:100px 0;
}

.flow{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  position:relative;
  margin-top:20px;
}
.flow::before{
  content:"";
  position:absolute;
  top:9px; left:0; right:0;
  height:1px;
  background:linear-gradient(90deg, rgba(79,216,255,0.05), rgba(79,216,255,0.5) 20%, rgba(155,92,255,0.5) 80%, rgba(155,92,255,0.05));
}
.flow-node{
  position:relative;
  width:23%;
  text-align:left;
}
.flow-dot{
  width:18px; height:18px;
  border-radius:50%;
  background:var(--ink-900);
  border:2px solid var(--cyan-glow);
  box-shadow:0 0 0 5px rgba(79,216,255,0.12);
  margin-bottom:22px;
}
.flow-node:nth-child(3) .flow-dot, .flow-node:nth-child(4) .flow-dot{
  border-color:var(--violet-glow);
  box-shadow:0 0 0 5px rgba(155,92,255,0.14);
}
.flow-node h3{ font-size:1.05rem; font-weight:600; color:#fff; }
.flow-node p{ margin-top:8px; font-size:0.9rem; color:#AEBBDB; max-width:26ch; }

@media (max-width:760px){
  .flow{ flex-direction:column; gap:34px; }
  .flow::before{ display:none; }
  .flow-node{ width:100%; }
}

/* ---------- ABOUT ---------- */
.about{
  position:relative;
  padding:100px 0;
  background:
    linear-gradient(190deg, rgba(6,9,15,0.86) 0%, rgba(6,10,22,0.78) 50%, rgba(6,9,15,0.9) 100%),
    url('/images/bg-network-2.jpg') center 42% / cover no-repeat;
  overflow:hidden;
}
.about-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.about .kicker{ color:var(--cyan-glow); font-weight:600; font-size:0.95rem; }
.about h2{ margin-top:10px; font-size:clamp(1.7rem, 3vw, 2.2rem); color:#fff; }
.about p{ margin-top:18px; color:#B9C6E6; font-size:1.02rem; max-width:52ch; }
.about-visual{
  aspect-ratio:4/3.1;
  border-radius:var(--radius-lg);
  position:relative;
  overflow:hidden;
  background-image:
    linear-gradient(160deg, rgba(6,9,15,0.15), rgba(6,9,15,0.45)),
    url('/images/bg-network-2.jpg'),
    url('/images/bg-network-1.jpg');
  background-blend-mode:normal, screen, normal;
  background-size:cover, cover, cover;
  background-position:center, center 30%, center 68%;
  background-repeat:no-repeat, no-repeat, no-repeat;
  border:1px solid rgba(255,255,255,0.14);
}

@media (max-width:820px){
  .about-grid{ grid-template-columns:1fr; gap:40px; }
  .about-visual{ order:-1; aspect-ratio:16/10; }
}

/* ---------- CONTACT ---------- */
.contact{
  position:relative;
  padding:100px 0 110px;
  background:
    linear-gradient(200deg, rgba(6,9,15,0.9) 0%, rgba(6,10,22,0.8) 55%, rgba(6,9,15,0.92) 100%),
    url('/images/bg-network-1.jpg') center 48% / cover no-repeat;
  overflow:hidden;
}
.contact .kicker{ color:var(--cyan-glow); font-weight:600; font-size:0.95rem; }
.contact h2{ margin-top:10px; font-size:clamp(1.7rem, 3vw, 2.2rem); color:#fff; }
.contact > .wrap > div > p{ margin-top:16px; color:#B9C6E6; font-size:1.02rem; max-width:48ch; }
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1.1fr;
  gap:64px;
  align-items:start;
}
.contact-detail{
  margin-top:32px;
  display:flex;
  flex-direction:column;
  gap:8px;
  font-size:0.95rem;
  color:#DCE6FA;
}
.contact-detail a{ color:var(--cyan-glow); }
.contact-form{
  background:rgba(255,255,255,0.07);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,0.16);
  border-radius:var(--radius-md);
  padding:32px;
  display:flex;
  flex-direction:column;
  box-shadow:0 8px 30px rgba(2,5,12,0.3);
}
.contact-form label{
  font-size:0.88rem;
  font-weight:600;
  color:#fff;
  margin-top:18px;
  margin-bottom:6px;
}
.contact-form label:first-child{ margin-top:0; }
.contact-form input,
.contact-form textarea{
  font-family:'Inter', sans-serif;
  font-size:0.98rem;
  padding:12px 14px;
  border:1px solid rgba(255,255,255,0.18);
  border-radius:10px;
  background:rgba(6,10,20,0.35);
  color:#fff;
  resize:vertical;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder{ color:#8391B0; }
.contact-form input:focus,
.contact-form textarea:focus{
  outline:2px solid var(--cyan-glow);
  outline-offset:1px;
}
.contact-status{
  margin-top:14px;
  font-size:0.92rem;
}
.contact-status.success{ color:#5FE0A8; }
.contact-status.error{ color:#FF8A8A; }

@media (max-width:820px){
  .contact-grid{ grid-template-columns:1fr; gap:36px; }
}

/* ---------- FOOTER ---------- */
footer{
  position:relative;
  background:
    linear-gradient(200deg, rgba(4,6,12,0.93) 0%, rgba(6,10,22,0.86) 60%, rgba(4,6,12,0.95) 100%),
    url('/images/bg-network-2.jpg') center 65% / cover no-repeat;
  color:#C9D5EE;
  padding:76px 0 32px;
  overflow:hidden;
}
.footer-top{
  position:relative;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo{ margin-bottom:12px; }
.footer-brand p{ max-width:34ch; color:#93A2C6; font-size:0.94rem; }
.footer-cols{ display:flex; gap:64px; }
.footer-col h4{ font-size:0.9rem; color:#fff; font-weight:600; margin-bottom:14px; }
.footer-col a{ display:block; font-size:0.92rem; color:#93A2C6; margin-bottom:10px; }
.footer-col a:hover{ color:#fff; }
.footer-bottom{
  position:relative;
  display:flex;
  justify-content:space-between;
  padding-top:26px;
  font-size:0.85rem;
  color:#6E7CA0;
}
@media (max-width:640px){
  .footer-top{ flex-direction:column; }
  .footer-cols{ gap:40px; }
  .footer-bottom{ flex-direction:column; gap:8px; }
}