:root{
  --bg-0:#050505;
  --bg-1:#0B0B0B;
  --bg-2:#111111;
  --accent:#2563EB;
  --accent-2:#3B82F6;
  --accent-soft:rgba(59,130,246,.35);
  --text-0:#F5F6F8;
  --text-1:#B4B8C2;
  --text-2:#7C818F;
  --border:rgba(255,255,255,.08);
  --border-hover:rgba(255,255,255,.16);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --container:1200px;
  --nav-h:76px;
  --ease:cubic-bezier(.16,.8,.24,1);
  color-scheme: dark;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

body{
  background:var(--bg-0);
  color:var(--text-0);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

.bg-noise{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(ellipse 900px 600px at 15% -10%, rgba(37,99,235,.16), transparent 60%),
    radial-gradient(ellipse 800px 700px at 100% 20%, rgba(59,130,246,.10), transparent 55%),
    radial-gradient(ellipse 700px 600px at 0% 80%, rgba(37,99,235,.08), transparent 55%),
    linear-gradient(180deg,var(--bg-0),var(--bg-1) 40%,var(--bg-0));
}

.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:clamp(20px,4vw,48px)}
.container-narrow{max-width:760px}

a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,textarea{font:inherit;color:inherit}

section{position:relative;z-index:1}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;font-weight:600;font-size:15px;
  border:1px solid transparent;transition:transform .35s var(--ease),box-shadow .35s var(--ease),background .3s,border-color .3s;
  white-space:nowrap;
}
.btn-lg{padding:16px 30px;font-size:16px}
.btn-sm{padding:9px 18px;font-size:13px}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;
  box-shadow:0 8px 24px -8px rgba(37,99,235,.6), inset 0 1px 0 rgba(255,255,255,.15);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px -8px rgba(37,99,235,.75), inset 0 1px 0 rgba(255,255,255,.2)}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--border);
  color:var(--text-0);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--border-hover);transform:translateY(-2px)}

/* ---------- Nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--nav-h);display:flex;align-items:center;
  background:rgba(5,5,5,.35);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .4s var(--ease),border-color .4s var(--ease);
}
.nav.scrolled{background:rgba(5,5,5,.72);border-bottom-color:var(--border)}
.nav-inner{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:clamp(20px,4vw,48px);display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:-.01em}
.logo-mark{display:inline-flex}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{font-size:14.5px;color:var(--text-1);transition:color .25s;position:relative}
.nav-links a:hover{color:var(--text-0)}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:1px;background:var(--accent-2);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-cta{flex-shrink:0}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:26px}
.nav-toggle span{height:1.5px;background:var(--text-0);border-radius:2px;transition:transform .3s,opacity .3s}

/* ---------- Hero ---------- */
.hero{min-height:100svh;display:flex;align-items:center;padding-top:var(--nav-h);position:relative}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:clamp(24px,5vw,60px);width:100%}
.eyebrow{color:var(--accent-2);font-size:13.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;margin-bottom:18px}
.hero-title{font-size:clamp(2.4rem,5.2vw,4.1rem);line-height:1.08;letter-spacing:-.02em;font-weight:700;margin-bottom:22px}
.hero-sub{font-size:clamp(1rem,1.4vw,1.2rem);color:var(--text-1);max-width:520px;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}

.hero-visual{position:relative;aspect-ratio:1/1;max-width:600px;justify-self:center;width:100%}
.hv-grid{width:100%;height:100%;overflow:visible}
.hv-glow{position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none}
.hv-glow-1{width:320px;height:320px;background:radial-gradient(circle,rgba(37,99,235,.45),transparent 70%);top:8%;right:2%}
.hv-glow-2{width:260px;height:260px;background:radial-gradient(circle,rgba(59,130,246,.3),transparent 70%);bottom:4%;left:0}
.orbit{animation:spin 40s linear infinite;transform-origin:300px 300px}
.orbit-2{animation-duration:60s;animation-direction:reverse}
@keyframes spin{to{transform:rotate(360deg)}}
.node{filter:drop-shadow(0 0 6px currentColor)}
.node-a{animation:float 5s ease-in-out infinite}
.node-b{animation:float 6s ease-in-out infinite .5s}
.node-c{animation:float 4.5s ease-in-out infinite 1s}
.node-d{animation:float 5.5s ease-in-out infinite .3s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.draw-line{stroke-dasharray:900;stroke-dashoffset:900;animation:draw 3.5s var(--ease) .3s forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.grid-lines{opacity:0;animation:fadeIn 1.2s var(--ease) .2s forwards}
@keyframes fadeIn{to{opacity:1}}

.hero-scroll{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);width:24px;height:38px;border:1.5px solid var(--border-hover);border-radius:14px;display:flex;justify-content:center;padding-top:7px}
.hero-scroll span{width:3px;height:8px;background:var(--accent-2);border-radius:3px;animation:scrollDot 1.8s ease-in-out infinite}
@keyframes scrollDot{0%{opacity:1;transform:translateY(0)}70%{opacity:0;transform:translateY(10px)}100%{opacity:0}}

/* ---------- Sections / typography ---------- */
.section{padding:clamp(64px,10vw,120px) 0}
.section-eyebrow{color:var(--accent-2);font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px;text-align:center}
.section-title{font-size:clamp(1.9rem,3.6vw,2.75rem);letter-spacing:-.02em;font-weight:700;text-align:center;margin-bottom:clamp(40px,6vw,72px)}

/* ---------- Grid / Cards ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.015));
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:clamp(24px,3vw,32px);
  backdrop-filter:blur(16px);
  position:relative;
  overflow:hidden;
  transition:transform .45s var(--ease),border-color .4s,box-shadow .45s var(--ease);
}
.card-hover:hover{
  transform:translateY(-6px) scale(1.015);
  border-color:var(--border-hover);
  box-shadow:0 20px 50px -20px rgba(37,99,235,.35), 0 0 0 1px rgba(59,130,246,.08);
}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(59,130,246,.12);color:var(--accent-2);border:1px solid rgba(59,130,246,.22);margin-bottom:20px;
}
.card h3{font-size:1.2rem;font-weight:650;margin-bottom:14px;letter-spacing:-.01em}
.card-list{display:flex;flex-direction:column;gap:9px}
.card-list li{color:var(--text-1);font-size:14.5px;padding-left:18px;position:relative}
.card-list li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 8px var(--accent-2)}

.why-card{text-align:left}
.why-emoji{font-size:28px;margin-bottom:16px}
.why-card p{color:var(--text-1);font-size:14.5px}

/* ---------- Timeline ---------- */
.timeline{position:relative;max-width:640px;margin-inline:auto;padding-left:52px}
.timeline::before{content:"";position:absolute;left:19px;top:8px;bottom:8px;width:1px;background:linear-gradient(180deg,var(--accent-2),rgba(59,130,246,.05))}
.timeline-item{position:relative;padding-bottom:44px}
.timeline-item:last-child{padding-bottom:0}
.timeline-num{
  position:absolute;left:-52px;top:0;width:40px;height:40px;border-radius:50%;
  background:var(--bg-1);border:1px solid rgba(59,130,246,.4);
  display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--accent-2);
  box-shadow:0 0 20px -4px rgba(59,130,246,.5);
}
.timeline-body h3{font-size:1.1rem;font-weight:650;margin-bottom:6px}
.timeline-body p{color:var(--text-1);font-size:14.5px}

/* ---------- Portfolio ---------- */
.port-card{cursor:pointer}
.port-glow{position:absolute;inset:-40% -40% auto auto;width:220px;height:220px;background:radial-gradient(circle,rgba(59,130,246,.4),transparent 70%);opacity:0;transition:opacity .45s var(--ease);pointer-events:none}
.port-card:hover .port-glow{opacity:1}
.port-card:hover{filter:brightness(1.06)}
.port-cat{display:inline-block;font-size:12px;font-weight:600;color:var(--accent-2);background:rgba(59,130,246,.12);border:1px solid rgba(59,130,246,.22);padding:5px 12px;border-radius:999px;margin-bottom:16px}
.port-card h3{margin-bottom:10px}
.port-card p{color:var(--text-1);font-size:14.5px;margin-bottom:20px}

/* ---------- Stack ---------- */
.stack-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}
.stack-badge{
  display:flex;align-items:center;gap:12px;
  background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:14px 16px;font-size:14px;font-weight:500;color:var(--text-1);
  transition:transform .35s var(--ease),border-color .3s,color .3s,background .3s;
}
.stack-badge:hover{transform:translateY(-3px);border-color:var(--border-hover);color:var(--text-0);background:rgba(255,255,255,.05)}
.stack-mark{
  width:34px;height:34px;flex-shrink:0;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-size:11.5px;font-weight:700;color:var(--accent-2);
  background:rgba(59,130,246,.1);border:1px solid rgba(59,130,246,.2);
}

/* ---------- Slider ---------- */
.slider{max-width:760px;margin-inline:auto}
.slider-track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:20px;scrollbar-width:none;-ms-overflow-style:none;padding-bottom:4px}
.slider-track::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 100%;scroll-snap-align:start;
  background:linear-gradient(180deg,rgba(59,130,246,.06),rgba(255,255,255,.02));
  border:1px solid var(--border);border-radius:var(--radius-lg);padding:clamp(28px,4vw,40px);
  box-shadow:0 0 60px -30px rgba(59,130,246,.4);
}
.review-text{font-size:clamp(1rem,1.6vw,1.15rem);line-height:1.6;margin-bottom:26px;color:var(--text-0)}
.review-author{display:flex;align-items:center;gap:12px}
.review-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:flex;align-items:center;justify-content:center;font-weight:700}
.review-author div{display:flex;flex-direction:column;font-size:13.5px}
.review-author span{color:var(--text-2)}
.slider-controls{display:flex;align-items:center;justify-content:center;gap:20px;margin-top:28px}
.slider-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--border);background:rgba(255,255,255,.03);
  font-size:20px;display:flex;align-items:center;justify-content:center;transition:border-color .3s,background .3s,transform .3s;
}
.slider-btn:hover{border-color:var(--border-hover);background:rgba(255,255,255,.06);transform:scale(1.06)}
.slider-dots{display:flex;gap:8px}
.slider-dots button{width:7px;height:7px;border-radius:50%;background:var(--border-hover);transition:background .3s,transform .3s}
.slider-dots button.active{background:var(--accent-2);transform:scale(1.3)}

/* ---------- FAQ ---------- */
.accordion{display:flex;flex-direction:column;gap:12px}
.accordion-item{border:1px solid var(--border);border-radius:var(--radius-md);background:rgba(255,255,255,.02);overflow:hidden;transition:border-color .3s}
.accordion-item:has(.accordion-head[aria-expanded="true"]){border-color:rgba(59,130,246,.35)}
.accordion-head{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;font-size:15.5px;font-weight:600;text-align:left}
.accordion-icon{color:var(--accent-2);font-size:20px;font-weight:400;transition:transform .35s var(--ease)}
.accordion-head[aria-expanded="true"] .accordion-icon{transform:rotate(45deg)}
.accordion-body{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.accordion-body p{padding:0 24px 20px;color:var(--text-1);font-size:14.5px;line-height:1.6}

/* ---------- CTA / Contact ---------- */
.cta-section{text-align:center;position:relative}
.cta-glow{position:absolute;top:0;left:50%;transform:translateX(-50%);width:600px;height:400px;background:radial-gradient(ellipse,rgba(37,99,235,.28),transparent 70%);filter:blur(10px);pointer-events:none;z-index:-1}
.cta-title{font-size:clamp(2rem,4.4vw,3.2rem);font-weight:700;letter-spacing:-.02em;margin-bottom:16px}
.cta-sub{color:var(--text-1);font-size:clamp(1rem,1.4vw,1.15rem);margin-bottom:44px}

.contact-form{
  text-align:left;background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:clamp(24px,4vw,40px);backdrop-filter:blur(16px);display:flex;flex-direction:column;gap:18px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field label{font-size:13px;color:var(--text-1);font-weight:500}
.form-field input,.form-field textarea{
  background:rgba(0,0,0,.3);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:13px 16px;color:var(--text-0);font-size:14.5px;resize:vertical;transition:border-color .3s,box-shadow .3s;
}
.form-field input:focus,.form-field textarea:focus{outline:none;border-color:var(--accent-2);box-shadow:0 0 0 3px rgba(59,130,246,.18)}
.contact-form .btn{align-self:flex-start}
.form-status{font-size:14px;color:var(--text-1);min-height:20px}
.form-status.ok{color:#4ADE80}
.form-status.err{color:#F87171}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--border);padding:36px 0;position:relative;z-index:1}
.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-links{display:flex;gap:24px}
.footer-links a{color:var(--text-1);font-size:14px;transition:color .25s}
.footer-links a:hover{color:var(--accent-2)}
.footer-copy{color:var(--text-2);font-size:13px}

/* ---------- Back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:90;width:46px;height:46px;border-radius:50%;
  background:rgba(17,17,17,.8);border:1px solid var(--border);backdrop-filter:blur(12px);
  display:flex;align-items:center;justify-content:center;color:var(--text-0);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .35s var(--ease),transform .35s var(--ease),border-color .3s,visibility .35s;
}
.to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--border-hover);box-shadow:0 0 20px -4px rgba(59,130,246,.5)}

/* ---------- Modal ---------- */
.modal{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:20px;visibility:hidden;opacity:0;transition:opacity .35s var(--ease),visibility .35s}
.modal.open{visibility:visible;opacity:1}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.65);backdrop-filter:blur(6px)}
.modal-card{
  position:relative;max-width:520px;width:100%;background:var(--bg-2);border:1px solid var(--border-hover);
  border-radius:var(--radius-lg);padding:clamp(28px,4vw,40px);box-shadow:0 30px 80px -20px rgba(0,0,0,.6),0 0 0 1px rgba(59,130,246,.1);
  transform:translateY(16px) scale(.98);transition:transform .4s var(--ease);
}
.modal.open .modal-card{transform:translateY(0) scale(1)}
.modal-close{position:absolute;top:18px;right:18px;width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.05);display:flex;align-items:center;justify-content:center;font-size:14px;transition:background .3s}
.modal-close:hover{background:rgba(255,255,255,.1)}
.modal-card h3{font-size:1.4rem;margin:14px 0 12px;letter-spacing:-.01em}
.modal-card p{color:var(--text-1);margin-bottom:26px;line-height:1.6}

/* ---------- Reveal on scroll ---------- */
[data-reveal]{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
[data-reveal].in-view{opacity:1;transform:translateY(0)}
.grid [data-reveal]:nth-child(2){transition-delay:.08s}
.grid [data-reveal]:nth-child(3){transition-delay:.16s}
.grid [data-reveal]:nth-child(4){transition-delay:.24s}
.grid [data-reveal]:nth-child(5){transition-delay:.32s}
.grid [data-reveal]:nth-child(6){transition-delay:.4s}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr}
  .hero-visual{order:-1;max-width:380px;margin-inline:auto;opacity:.85}
  .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .nav-links{
    position:fixed;top:var(--nav-h);left:0;right:0;flex-direction:column;align-items:flex-start;gap:0;
    background:rgba(5,5,5,.92);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);
    max-height:0;overflow:hidden;transition:max-height .4s var(--ease);
  }
  .nav-links.open{max-height:400px}
  .nav-links li{width:100%}
  .nav-links a{display:block;padding:16px clamp(20px,4vw,48px);width:100%;border-bottom:1px solid var(--border)}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
}
@media (max-width:720px){
  .grid-3,.grid-4{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .timeline{padding-left:44px}
  .timeline-num{left:-44px;width:34px;height:34px;font-size:14px}
}
@media (max-width:420px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .footer-inner{flex-direction:column;text-align:center}
}