:root{
    --primary:#0057FF;
    --primary-2:#0046D6;
    --secondary:#0B1F3A;
    --secondary-2:#0F274A;
    --accent:#35A8FF;
    --white:#FFFFFF;
    --gray:#F5F7FA;
    --ink-soft: rgba(245,247,250,0.75);
    --ink-faint: rgba(245,247,250,0.5);
    --grad: linear-gradient(120deg, #0057FF 0%, #35A8FF 100%);
    --border-glass: rgba(255,255,255,0.10);
    --glass: rgba(255,255,255,0.045);
    --radius: clamp(14px, 2vw, 20px);
    --shadow-sm: 0 10px 30px -12px rgba(2,10,25,0.45);
    --gutter: clamp(20px, 5vw, 64px);
    --section-y: clamp(64px, 10vw, 120px);
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    font-family:'Inter',system-ui,-apple-system,sans-serif;
    background:var(--secondary);
    color:var(--white);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
    line-height:1.5;
  }
  @media (prefers-reduced-motion: reduce){
    *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important;}
  }
  a{color:inherit; text-decoration:none;}
  img,svg{display:block; max-width:100%;}
  button, input, textarea, select{font-family:inherit;}
  ::selection{background:var(--primary); color:#fff;}
  :focus-visible{outline:2px solid var(--accent); outline-offset:3px; border-radius:4px;}

  /* ---------- Scroll progress ---------- */
  #scrollbar{position:fixed; top:0; left:0; height:3px; width:0%; background:var(--grad); z-index:9999; transition:width .1s linear;}

  /* ---------- Nav ---------- */
  header{
    position:fixed; top:0; left:0; right:0; z-index:1000;
    padding:clamp(10px,2vw,14px) var(--gutter);
    display:flex; align-items:center; justify-content:space-between; gap:12px;
    background:rgba(11,31,58,0.6);
    backdrop-filter:blur(16px) saturate(140%);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    border-bottom:1px solid var(--border-glass);
    padding-top:max(clamp(10px,2vw,14px), env(safe-area-inset-top));
  }
  .brand{display:flex; align-items:center; gap:10px; font-weight:800; font-size:clamp(16px,2vw,19px); letter-spacing:-0.02em; flex-shrink:0;}
  .brand .mark{
    width:34px; height:34px; border-radius:10px; background:var(--grad);
    display:flex; align-items:center; justify-content:center; font-weight:900; font-size:15px; color:#fff;
    flex-shrink:0;
  }
  nav.links{display:flex; gap:2px; align-items:center; flex-wrap:wrap;}
  nav.links a{
    padding:10px 14px; font-size:13.5px; font-weight:500; color:var(--ink-soft);
    border-radius:10px; transition:.2s; white-space:nowrap;
  }
  nav.links a:hover, nav.links a:focus-visible{color:#fff; background:rgba(255,255,255,0.06);}
  .nav-cta{
    padding:10px 18px !important; border-radius:10px; background:var(--grad); color:#fff !important;
    font-weight:600 !important;
  }
  .nav-cta:hover{filter:brightness(1.08);}
  .burger{display:none; flex-direction:column; gap:5px; cursor:pointer; background:none; border:none; padding:10px; flex-shrink:0;}
  .burger span{width:22px; height:2px; background:#fff; border-radius:2px;}

  /* ---------- Layout helpers ---------- */
  section{position:relative; padding:var(--section-y) var(--gutter); max-width:1360px; margin:0 auto;}
  .eyebrow{
    display:inline-flex; align-items:center; gap:8px; font-size:12px; font-weight:700; letter-spacing:.12em; text-transform:uppercase;
    color:var(--accent); margin-bottom:16px;
  }
  .eyebrow::before{content:''; width:7px; height:7px; border-radius:50%; background:var(--grad);}
  h1,h2,h3{letter-spacing:-0.02em; font-weight:800;}
  h2.headline{font-size:clamp(28px,4.2vw,44px); line-height:1.15; max-width:780px;}
  p.lede{font-size:clamp(15px,1.6vw,18px); color:var(--ink-soft); max-width:640px; margin-top:16px; line-height:1.65;}
  .section-head{margin-bottom:clamp(36px,6vw,60px);}
  .grad-text{background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent;}

  .glass{
    background:var(--glass); border:1px solid var(--border-glass); border-radius:var(--radius);
    backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px);
  }

  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:10px;
    padding:14px clamp(18px,3vw,26px); border-radius:12px;
    font-weight:600; font-size:14.5px; cursor:pointer; border:none; transition:.25s ease;
    min-height:48px;
  }
  .btn-primary{background:var(--grad); color:#fff;}
  .btn-primary:hover{transform:translateY(-2px); filter:brightness(1.05);}
  .btn-ghost{background:rgba(255,255,255,0.05); color:#fff; border:1px solid rgba(255,255,255,0.18);}
  .btn-ghost:hover{background:rgba(255,255,255,0.1); transform:translateY(-2px);}

  .reveal{opacity:0; transform:translateY(24px); transition:opacity .6s cubic-bezier(.2,.7,.2,1), transform .6s cubic-bezier(.2,.7,.2,1);}
  .reveal.in{opacity:1; transform:none;}

  /* ================= HERO ================= */
  #hero{padding-top:clamp(130px,18vw,170px); padding-bottom:clamp(40px,6vw,60px); min-height:min(100vh, 780px); display:flex; align-items:center;}
  #network-canvas{position:absolute; inset:0; width:100%; height:100%; z-index:0; opacity:.8;}
  .hero-inner{position:relative; z-index:2; display:grid; grid-template-columns:minmax(0,1.1fr) minmax(260px,0.9fr); gap:clamp(30px,5vw,60px); align-items:center; width:100%;}
  .hero-badge{
    display:inline-flex; align-items:center; gap:8px; padding:8px 16px; border-radius:999px;
    font-size:12.5px; font-weight:600; color:var(--ink-soft); margin-bottom:24px; flex-wrap:wrap;
  }
  .hero-badge .dot{width:7px; height:7px; border-radius:50%; background:var(--accent);}
  h1.hero-h{font-size:clamp(32px,5.6vw,62px); font-weight:900; line-height:1.08;}
  .hero-sub{font-size:clamp(15px,1.8vw,18.5px); color:var(--ink-soft); max-width:560px; margin-top:22px; line-height:1.65;}
  .hero-ctas{display:flex; gap:14px; margin-top:32px; flex-wrap:wrap;}

  .hero-visual{position:relative; min-height:clamp(220px,30vw,420px);}
  .float-card{
    position:absolute; padding:16px 18px; min-width:180px; max-width:calc(100% - 20px);
    display:flex; flex-direction:column; gap:6px;
    animation:float 6s ease-in-out infinite;
  }
  .float-card .fc-label{font-size:11px; text-transform:uppercase; letter-spacing:.07em; color:var(--ink-faint); font-weight:700;}
  .float-card .fc-value{font-size:19px; font-weight:700; line-height:1.3;}
  .fc-1{top:4%; left:0%; animation-delay:0s;}
  .fc-2{top:40%; right:0%; animation-delay:1.2s;}
  .fc-3{bottom:4%; left:10%; animation-delay:2.4s;}
  @keyframes float{0%,100%{transform:translateY(0px);}50%{transform:translateY(-12px);}}
  @media (max-width:1080px){ .hero-visual{display:none;} }

  /* ================= ABOUT ================= */
  .about-grid{display:grid; grid-template-columns:minmax(0,1.1fr) minmax(260px,0.9fr); gap:clamp(30px,5vw,60px); align-items:start;}
  .about-text p{font-size:clamp(15px,1.6vw,17px); color:var(--ink-soft); line-height:1.75; margin-bottom:16px;}
  .mv-card{padding:26px; margin-bottom:16px;}
  .mv-card h4{font-size:13px; text-transform:uppercase; letter-spacing:.1em; color:var(--accent); margin-bottom:10px;}
  .mv-card p{font-size:15px; color:var(--ink-soft); line-height:1.6;}
  @media (max-width:900px){ .about-grid{grid-template-columns:1fr;} }

  /* ================= WHY US ================= */
  .why-grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(240px,1fr)); gap:18px;}
  .why-card{padding:clamp(22px,3vw,30px) clamp(20px,3vw,26px); transition:.25s;}
  .why-card .ic{width:44px; height:44px; border-radius:12px; background:linear-gradient(135deg, rgba(0,87,255,.25), rgba(53,168,255,.1)); display:flex; align-items:center; justify-content:center; margin-bottom:18px; border:1px solid rgba(53,168,255,.25);}
  .why-card h3{font-size:16.5px; margin-bottom:10px;}
  .why-card p{font-size:14px; color:var(--ink-faint); line-height:1.6; font-weight:400;}
  .why-card:hover{transform:translateY(-5px); border-color:rgba(53,168,255,.4); box-shadow:var(--shadow-sm);}

  /* ================= SERVICES ================= */
  .services-grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(280px,1fr)); gap:20px;}
  .service-card{padding:clamp(24px,3vw,30px) clamp(22px,3vw,28px); transition:.3s; position:relative; overflow:hidden;}
  .service-card::before{content:''; position:absolute; top:0; left:0; right:0; height:2px; background:var(--grad); opacity:0; transition:.3s;}
  .service-card:hover::before{opacity:1;}
  .service-card:hover{transform:translateY(-5px); box-shadow:var(--shadow-sm); border-color:rgba(53,168,255,.35);}
  .service-card h3{font-size:18px; margin-bottom:10px;}
  .service-card p{font-size:14.5px; color:var(--ink-faint); line-height:1.65; font-weight:400;}

  /* ================= SOLUTIONS ================= */
  .sol-grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(220px,1fr)); gap:16px;}
  .sol-chip{padding:22px 18px; transition:.25s;}
  .sol-chip h4{font-size:15px; margin-bottom:8px;}
  .sol-chip p{font-size:13px; color:var(--ink-faint); line-height:1.55; font-weight:400;}
  .sol-chip:hover{border-color:rgba(53,168,255,.4); background:rgba(53,168,255,.05); transform:translateY(-4px);}

  /* ================= PROCESS ================= */
  .tl-track{position:relative; display:flex; flex-direction:column;}
  .tl-line{position:absolute; left:27px; top:20px; bottom:20px; width:2px; background:linear-gradient(180deg, rgba(0,87,255,.6), rgba(53,168,255,.05));}
  .tl-item{display:grid; grid-template-columns:56px 1fr; gap:22px; padding:20px 0;}
  .tl-num{width:56px; height:56px; border-radius:16px; background:var(--secondary-2); border:1px solid rgba(53,168,255,.3); display:flex; align-items:center; justify-content:center; font-weight:800; font-size:16px; z-index:1; color:var(--accent); flex-shrink:0;}
  .tl-body h3{font-size:16.5px; margin-bottom:6px;}
  .tl-body p{font-size:14px; color:var(--ink-faint); max-width:560px; line-height:1.6; font-weight:400;}
  @media (max-width:600px){
    .tl-item{grid-template-columns:44px 1fr; gap:16px;}
    .tl-num{width:44px; height:44px; font-size:14px; border-radius:12px;}
    .tl-line{left:21px;}
  }

  /* ================= PORTFOLIO ================= */
  .folio-category{margin-bottom:clamp(40px,6vw,60px);}
  .folio-category:last-child{margin-bottom:0;}
  .cat-head{display:flex; align-items:center; gap:14px; margin-bottom:24px; flex-wrap:wrap;}
  .cat-head h3{font-size:clamp(18px,2.2vw,22px);}
  .cat-badge{font-size:11px; font-weight:700; text-transform:uppercase; letter-spacing:.08em; padding:5px 12px; border-radius:999px; border:1px solid var(--border-glass); color:var(--ink-faint);}
  .cat-badge.future{color:var(--accent); border-color:rgba(53,168,255,.35);}
  .folio-grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(300px,1fr)); gap:20px;}
  .folio-card{padding:clamp(22px,3vw,26px); transition:.3s; display:flex; flex-direction:column;}
  .folio-card:hover{transform:translateY(-5px); box-shadow:var(--shadow-sm); border-color:rgba(53,168,255,.35);}
  .folio-status{display:inline-flex; align-self:flex-start; font-size:10.5px; font-weight:700; text-transform:uppercase; letter-spacing:.07em; padding:4px 10px; border-radius:999px; margin-bottom:14px;}
  .status-complete{background:rgba(53,168,255,.12); color:var(--accent); border:1px solid rgba(53,168,255,.3);}
  .status-progress{background:rgba(255,196,53,.12); color:#FFC435; border:1px solid rgba(255,196,53,.3);}
  .status-concept{background:rgba(255,255,255,.06); color:var(--ink-faint); border:1px solid var(--border-glass);}
  .folio-card h4{font-size:17px; margin-bottom:12px;}
  .folio-row{font-size:13px; color:var(--ink-faint); margin-bottom:8px; line-height:1.6; font-weight:400;}
  .folio-row b{color:var(--ink-soft); font-weight:600;}
  .folio-stack{display:flex; flex-wrap:wrap; gap:6px; margin-top:14px;}
  .stack-pill{font-size:11px; padding:4px 10px; border-radius:999px; background:rgba(255,255,255,.06); border:1px solid var(--border-glass); color:var(--ink-soft);}
  .folio-toggle{font-size:12.5px; font-weight:700; color:var(--accent); margin-top:16px; cursor:pointer; background:none; border:none; padding:0; text-align:left;}
  .folio-more{max-height:0; overflow:hidden; transition:max-height .35s ease;}
  .folio-more.open{max-height:400px;}

  /* ================= TECHNOLOGIES ================= */
  .tech-grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(110px,1fr)); gap:12px;}
  .tech-chip{padding:18px 10px; text-align:center; font-size:13px; font-weight:700; color:var(--ink-soft); transition:.25s;}
  .tech-chip:hover{color:#fff; border-color:rgba(53,168,255,.5); transform:scale(1.03);}

  /* ================= BLOG ================= */
  .blog-grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(240px,1fr)); gap:18px;}
  .blog-card{padding:24px; transition:.25s;}
  .blog-card:hover{transform:translateY(-4px); border-color:rgba(53,168,255,.35);}
  .blog-tag{font-size:11px; font-weight:700; text-transform:uppercase; letter-spacing:.07em; color:var(--accent); margin-bottom:12px; display:block;}
  .blog-card h4{font-size:16px; margin-bottom:10px;}
  .blog-card p{font-size:13.5px; color:var(--ink-faint); line-height:1.6; font-weight:400;}

  /* ================= FAQ ================= */
  .faq-item{border-bottom:1px solid var(--border-glass); padding:20px 4px; cursor:pointer;}
  .faq-item:first-child{border-top:1px solid var(--border-glass);}
  .faq-q{display:flex; justify-content:space-between; align-items:center; gap:16px; font-size:clamp(14.5px,1.8vw,16.5px); font-weight:600;}
  .faq-q .plus{width:20px; height:20px; flex-shrink:0; position:relative; transition:.3s;}
  .faq-q .plus::before,.faq-q .plus::after{content:''; position:absolute; background:var(--accent); border-radius:2px;}
  .faq-q .plus::before{width:100%; height:2px; top:50%; left:0; transform:translateY(-50%);}
  .faq-q .plus::after{height:100%; width:2px; left:50%; top:0; transform:translateX(-50%); transition:.3s;}
  .faq-item.open .plus::after{transform:translateX(-50%) rotate(90deg); opacity:0;}
  .faq-a{max-height:0; overflow:hidden; transition:max-height .35s ease;}
  .faq-a p{font-size:14px; color:var(--ink-faint); line-height:1.65; padding-top:14px; max-width:760px; font-weight:400;}

  /* ================= CONTACT ================= */
  .contact-grid{display:grid; grid-template-columns:minmax(0,1fr) minmax(260px,0.85fr); gap:clamp(30px,5vw,50px);}
  @media (max-width:900px){ .contact-grid{grid-template-columns:1fr;} }
  .form-field{margin-bottom:16px;}
  .form-field label{font-size:13px; font-weight:600; color:var(--ink-soft); display:block; margin-bottom:8px;}
  .form-field input, .form-field textarea, .form-field select{
    width:100%; padding:13px 16px; border-radius:10px; background:rgba(255,255,255,.04);
    border:1px solid var(--border-glass); color:#fff; font-size:14.5px; outline:none; transition:.2s;
  }
  .form-field input:focus, .form-field textarea:focus, .form-field select:focus{border-color:var(--accent); box-shadow:0 0 0 3px rgba(53,168,255,.18);}
  .form-field textarea{resize:vertical; min-height:110px;}
  .contact-info-card{padding:clamp(24px,3vw,34px); height:fit-content;}
  .info-row{display:flex; gap:14px; align-items:flex-start; margin-bottom:22px;}
  .info-row .ic{width:38px; height:38px; border-radius:10px; background:rgba(53,168,255,.12); border:1px solid rgba(53,168,255,.25); display:flex; align-items:center; justify-content:center; flex-shrink:0;}
  .info-row h4{font-size:14px; margin-bottom:3px;}
  .info-row p{font-size:13.5px; color:var(--ink-faint); font-weight:400;}
  .map-placeholder{margin-top:22px; height:140px; border-radius:14px; border:1px dashed var(--border-glass); display:flex; align-items:center; justify-content:center; font-size:12.5px; color:var(--ink-faint); text-align:center; padding:12px;}
  option{background:var(--bg); color:#585555;}
  /* ================= FOOTER ================= */
  footer{border-top:1px solid var(--border-glass); padding:clamp(40px,6vw,70px) var(--gutter) 30px;}
  .footer-grid{display:grid; grid-template-columns:1.4fr repeat(4, minmax(120px,1fr)); gap:clamp(24px,4vw,40px); max-width:1360px; margin:0 auto;}
  .footer-grid h5{font-size:12.5px; font-weight:700; text-transform:uppercase; letter-spacing:.08em; color:var(--ink-faint); margin-bottom:16px;}
  .footer-grid a{display:block; font-size:14px; color:var(--ink-soft); margin-bottom:11px; transition:.2s;}
  .footer-grid a:hover{color:var(--accent);}
  .footer-bottom{max-width:1360px; margin:44px auto 0; padding-top:24px; border-top:1px solid var(--border-glass); display:flex; justify-content:space-between; align-items:center; font-size:12.5px; color:var(--ink-faint); flex-wrap:wrap; gap:12px;}
  @media (max-width:820px){ .footer-grid{grid-template-columns:repeat(2,1fr);} }
  @media (max-width:480px){ .footer-grid{grid-template-columns:1fr;} }

  /* ---------- Responsive breakpoints ---------- */
  @media (max-width:1080px){
    .hero-inner{grid-template-columns:1fr;}
  }
  @media (max-width:820px){
    nav.links{display:none;}
    .burger{display:flex;}
  }
  @media (max-width:380px){
    .hero-ctas .btn, .contact-info-card .btn{width:100%;}
  }

/* ================= CHATBOT WIDGET ================= */
#kbsn-chat-widget{position:fixed; right:clamp(16px,3vw,28px); bottom:clamp(16px,3vw,28px); z-index:2000; font-family:'Inter',sans-serif;}
#kbsn-chat-toggle{
  width:58px; height:58px; border-radius:50%; border:none; cursor:pointer;
  background:var(--grad); display:flex; align-items:center; justify-content:center;
  box-shadow:0 12px 30px -8px rgba(0,87,255,.55); transition:.25s;
}
#kbsn-chat-toggle:hover{transform:translateY(-2px) scale(1.04);}

#kbsn-chat-panel{
  position:absolute; right:0; bottom:74px; width:min(360px, calc(100vw - 32px));
  height:min(520px, calc(100vh - 140px));
  display:flex; flex-direction:column; overflow:hidden;
  opacity:0; transform:translateY(16px) scale(.98); pointer-events:none;
  transition:opacity .25s ease, transform .25s ease;
  box-shadow:0 24px 60px -16px rgba(2,10,25,.6);
}
#kbsn-chat-panel.open{opacity:1; transform:none; pointer-events:auto;}

#kbsn-chat-header{
  display:flex; align-items:center; gap:12px; padding:16px 18px;
  border-bottom:1px solid var(--border-glass); flex-shrink:0;
}
#kbsn-chat-header .mark{width:34px; height:34px; border-radius:10px; background:var(--grad); display:flex; align-items:center; justify-content:center; font-weight:900; font-size:14px; flex-shrink:0;}
#kbsn-chat-title{font-size:14.5px; font-weight:700;}
#kbsn-chat-status{font-size:11.5px; color:var(--ink-faint); display:flex; align-items:center; gap:6px; margin-top:2px;}
.kbsn-dot{width:6px; height:6px; border-radius:50%; background:#35D07F; flex-shrink:0;}

#kbsn-chat-messages{
  flex:1; overflow-y:auto; padding:16px 18px; display:flex; flex-direction:column; gap:12px;
}
.kbsn-msg{max-width:85%; padding:10px 14px; border-radius:14px; font-size:13.5px; line-height:1.55;}
.kbsn-msg.bot{align-self:flex-start; background:rgba(255,255,255,.06); border:1px solid var(--border-glass); color:var(--ink-soft); border-bottom-left-radius:4px;}
.kbsn-msg.user{align-self:flex-end; background:var(--grad); color:#fff; border-bottom-right-radius:4px;}
.kbsn-msg.typing{display:flex; gap:4px; align-items:center; padding:12px 14px;}
.kbsn-msg.typing span{width:6px; height:6px; border-radius:50%; background:var(--ink-faint); animation:kbsnTyping 1.1s infinite ease-in-out;}
.kbsn-msg.typing span:nth-child(2){animation-delay:.15s;}
.kbsn-msg.typing span:nth-child(3){animation-delay:.3s;}
@keyframes kbsnTyping{0%,60%,100%{opacity:.3; transform:translateY(0);}30%{opacity:1; transform:translateY(-3px);}}

#kbsn-chat-form{display:flex; gap:8px; padding:14px; border-top:1px solid var(--border-glass); flex-shrink:0;}
#kbsn-chat-input{
  flex:1; padding:11px 14px; border-radius:10px; background:rgba(255,255,255,.04);
  border:1px solid var(--border-glass); color:#fff; font-size:13.5px; outline:none;
}
#kbsn-chat-input:focus{border-color:var(--accent); box-shadow:0 0 0 3px rgba(53,168,255,.18);}
#kbsn-chat-send{
  width:40px; height:40px; border-radius:10px; border:none; background:var(--grad);
  display:flex; align-items:center; justify-content:center; cursor:pointer; flex-shrink:0; transition:.2s;
}
#kbsn-chat-send:hover{filter:brightness(1.08);}
#kbsn-chat-send:disabled{opacity:.5; cursor:default;}

@media (max-width:480px){
  #kbsn-chat-panel{right:-8px; width:calc(100vw - 24px);}
}