:root{
  --cyan:#18c9e8;
  --blue:#1a56db;
  --purple:#5b1fb0;
  --ink:#101423;
  --ink-soft:#4b5165;
  --bg:#ffffff;
  --bg-alt:#f4f6fb;
  --border:#e3e7f0;
  --gradient: linear-gradient(100deg, var(--cyan) 0%, var(--blue) 55%, var(--purple) 100%);
  --shadow: 0 10px 30px -12px rgba(16,20,35,0.18);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
}
img{max-width:100%;display:block;}
a{color:inherit;}
ul{list-style:none;margin:0;padding:0;}

.container{
  width:100%;
  max-width:1160px;
  margin:0 auto;
  padding:0 24px;
}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,0.9);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:76px;
}
.brand img{height:38px;width:auto;}
.main-nav{
  display:flex;
  align-items:center;
  gap:32px;
  font-weight:600;
  font-size:0.95rem;
}
.main-nav a{
  text-decoration:none;
  color:var(--ink-soft);
  transition:color .15s ease;
}
.main-nav a:hover{color:var(--blue);}
.nav-cta{
  color:#fff !important;
  background:var(--gradient);
  padding:10px 20px;
  border-radius:8px;
}
.nav-cta:hover{opacity:.92;color:#fff !important;}

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:40px;
  height:40px;
  background:none;
  border:none;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  height:2px;
  background:var(--ink);
  border-radius:2px;
}

/* Hero */
.hero{
  padding:96px 0 80px;
  background:
    radial-gradient(1100px 500px at 15% -10%, rgba(24,201,232,.12), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(91,31,176,.12), transparent 60%);
}
.hero-inner{max-width:760px;}
.hero h1{
  font-size:clamp(2rem, 4vw, 3rem);
  font-weight:800;
  line-height:1.15;
  margin:0 0 20px;
  letter-spacing:-0.02em;
}
.hero-lead{
  font-size:1.15rem;
  color:var(--ink-soft);
  margin:0 0 32px;
  max-width:620px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}

.btn{
  display:inline-block;
  padding:14px 28px;
  border-radius:8px;
  font-weight:600;
  text-decoration:none;
  transition:transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.btn-primary{
  color:#fff;
  background:var(--gradient);
  box-shadow:var(--shadow);
}
.btn-primary:hover{transform:translateY(-2px);}
.btn-ghost{
  color:var(--ink);
  border:1px solid var(--border);
  background:#fff;
}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);}

/* Sections */
.section{padding:88px 0;}
.section-alt{background:var(--bg-alt);}
.section-title{
  font-size:clamp(1.6rem, 2.6vw, 2.1rem);
  font-weight:800;
  letter-spacing:-0.01em;
  margin:0 0 12px;
}
.section-lead{
  color:var(--ink-soft);
  font-size:1.05rem;
  margin:0 0 44px;
  max-width:620px;
}

.cards-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.cards-grid-3{grid-template-columns:repeat(3,1fr);}

.card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:14px;
  padding:28px 24px;
  box-shadow:0 1px 2px rgba(16,20,35,.04);
  transition:box-shadow .15s ease, transform .15s ease;
}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px);}
.card-icon{
  width:48px;height:48px;
  margin-bottom:18px;
}
.card-icon svg{
  width:100%;height:100%;
  fill:none;
  stroke:var(--blue);
  stroke-width:2;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.card h3{
  font-size:1.05rem;
  margin:0 0 10px;
  font-weight:700;
}
.card p{
  margin:0;
  color:var(--ink-soft);
  font-size:0.95rem;
}

/* Clients */
.clients-list{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.clients-list li{
  background:#fff;
  border:1px solid var(--border);
  border-radius:10px;
  padding:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  height:110px;
  transition:box-shadow .15s ease, transform .15s ease;
}
.clients-list li:hover{box-shadow:var(--shadow);transform:translateY(-3px);}
.clients-list img{
  max-width:100%;
  max-height:100%;
  width:auto;
  height:auto;
  object-fit:contain;
}

/* About */
.about-grid p{
  color:var(--ink-soft);
  max-width:760px;
  font-size:1.05rem;
}

/* Contact */
.contact-grid{max-width:640px;}
.contact-list{margin:28px 0 32px;display:flex;flex-direction:column;gap:20px;}
.contact-label{
  display:block;
  font-weight:700;
  color:var(--ink);
  margin-bottom:4px;
}
.contact-list a{
  color:var(--blue);
  text-decoration:none;
  font-weight:600;
}
.contact-list a:hover{text-decoration:underline;}

/* Footer */
.site-footer{
  border-top:1px solid var(--border);
  padding:32px 0;
}
.footer-inner{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
}
.footer-logo{height:26px;opacity:.8;}
.footer-inner p{
  margin:0;
  color:var(--ink-soft);
  font-size:0.9rem;
}

/* Responsive */
@media (max-width:900px){
  .cards-grid{grid-template-columns:repeat(2,1fr);}
  .cards-grid-3{grid-template-columns:repeat(2,1fr);}
  .clients-list{grid-template-columns:repeat(2,1fr);}
}

@media (max-width:720px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:absolute;
    top:76px;left:0;right:0;
    background:#fff;
    border-bottom:1px solid var(--border);
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:8px 24px 20px;
    display:none;
  }
  .main-nav.open{display:flex;}
  .main-nav a{width:100%;padding:12px 0;border-bottom:1px solid var(--border);}
  .main-nav a:last-child{border-bottom:none;}
  .nav-cta{margin-top:12px;text-align:center;}
  .cards-grid,.cards-grid-3{grid-template-columns:1fr;}
  .clients-list{grid-template-columns:1fr;}
  .section{padding:64px 0;}
  .hero{padding:72px 0 56px;}
}