:root{
  --ink:#0A0E14;
  --surface:#111826;
  --surface-2:#151E30;
  --border:#232F47;
  --border-soft:#1A2338;
  --text:#E9EDF4;
  --text-dim:#8B96AC;
  --text-faint:#5A667F;
  --signal:#3ADD97;
  --signal-dim:#1F6B4C;
  --amber:#E8A33D;
  --mono:'IBM Plex Mono', ui-monospace, monospace;
  --sans:'IBM Plex Sans', -apple-system, sans-serif;
  --maxw:1180px;
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--ink); color:var(--text); font-family:var(--sans);
  font-size:16px; line-height:1.6; -webkit-font-smoothing:antialiased;
}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 32px;}

.eyebrow{
  font-family:var(--mono); font-size:12.5px; letter-spacing:0.14em; text-transform:uppercase;
  color:var(--signal); display:flex; align-items:center; gap:10px;
}
.eyebrow::before{
  content:''; width:6px; height:6px; border-radius:50%; background:var(--signal);
  box-shadow:0 0 0 3px rgba(58,221,151,0.15); flex-shrink:0;
}

h1,h2,h3{font-family:var(--sans); font-weight:600; letter-spacing:-0.01em; color:var(--text);}

section{padding:96px 0;}
@media (max-width:720px){ section{padding:64px 0;} }

.section-divider{max-width:var(--maxw); margin:0 auto; padding:0 32px;}
.section-divider .lines{display:flex; flex-direction:column; gap:5px;}
.section-divider .lines .l1{height:1px; background:var(--border);}
.section-divider .lines .l2{height:0; border-top:1px dashed var(--border-soft);}

/* ---------- NAV ---------- */
header{
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:transparent; border-bottom:1px solid transparent;
  transition:background 0.3s, border-color 0.3s;
}
header.solid{
  background:rgba(10,14,20,0.9); backdrop-filter:blur(10px); border-bottom:1px solid var(--border-soft);
}
nav{
  max-width:var(--maxw); margin:0 auto; padding:16px 32px;
  display:flex; align-items:center; justify-content:space-between;
}
.brand{display:flex; align-items:center; gap:12px; font-family:var(--mono); font-size:15px; letter-spacing:0.02em; color:var(--text);}
.brand-mark{width:38px; height:38px; border-radius:9px; object-fit:cover;}
.brand .status{display:flex; align-items:center; gap:6px; font-size:11px; color:var(--text-faint); font-family:var(--mono); margin-left:6px;}
.brand .status .dot{width:5px; height:5px; border-radius:50%; background:var(--signal); box-shadow:0 0 0 2px rgba(58,221,151,0.15);}
.nav-links{display:flex; align-items:center; gap:34px;}
.nav-links a{font-size:14px; color:var(--text-dim); transition:color 0.15s;}
.nav-links a:hover{color:var(--text);}
.nav-cta{
  font-family:var(--mono); font-size:13px; padding:9px 18px;
  border:1px solid var(--signal-dim); border-radius:6px; color:var(--signal);
  background:rgba(58,221,151,0.06); transition:all 0.15s; white-space:nowrap;
}
.nav-cta:hover{background:rgba(58,221,151,0.12); border-color:var(--signal);}
.nav-toggle{display:none; background:rgba(255,255,255,0.04); border:1px solid var(--border); border-radius:6px; width:38px; height:38px; color:var(--text); font-size:18px; cursor:pointer;}
@media (max-width:860px){ .nav-links{display:none;} .nav-toggle{display:block;} }

/* ---------- FULL-PAGE COVER SLIDESHOW (fixed crossfade) ---------- */
.cover{position:relative; height:100vh; min-height:660px; overflow:hidden; padding:0;}
.slides{position:relative; width:100%; height:100%;}

.slide{
  position:absolute; inset:0; opacity:0; z-index:1;
  transition:opacity 2s ease;
  display:flex; align-items:center;
  pointer-events:none;
}
.slide.active{opacity:1; z-index:2; pointer-events:auto;}

.slide-bg{
  position:absolute; inset:0; background-size:cover; background-position:center;
  transform:scale(1.06);
  transition:transform 8s linear;
}
.slide.active .slide-bg{transform:scale(1.16);}

.slide-bg-1{background-image:url('https://images.pexels.com/photos/5140475/pexels-photo-5140475.jpeg?auto=compress&cs=tinysrgb&w=1920');}
.slide-bg-2{background-image:url('https://images.pexels.com/photos/5480781/pexels-photo-5480781.jpeg?auto=compress&cs=tinysrgb&w=1920');}
.slide-bg-3{background-image:url('https://images.pexels.com/photos/695193/pexels-photo-695193.jpeg?auto=compress&cs=tinysrgb&w=1920');}

.slide-overlay{
  position:absolute; inset:0;
  background:linear-gradient(90deg, rgba(8,11,16,0.94) 0%, rgba(8,11,16,0.78) 42%, rgba(8,11,16,0.4) 75%, rgba(8,11,16,0.6) 100%);
}
.slide-content{position:relative; z-index:3; width:100%; padding-top:60px;}

.hero-grid{display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; align-items:center;}
@media (max-width:960px){ .hero-grid{grid-template-columns:1fr; gap:36px;} }

.slide-content h1{font-size:clamp(32px, 4.6vw, 54px); line-height:1.12; margin:22px 0 22px; max-width:640px;}
.slide-content .accent{color:var(--signal);}
.slide-content p.lead{font-size:17px; color:var(--text-dim); max-width:520px; margin-bottom:32px;}
.slide-simple{max-width:680px;}

.cta-row{display:flex; gap:14px; flex-wrap:wrap;}
.btn{
  font-family:var(--mono); font-size:13.5px; letter-spacing:0.01em;
  padding:14px 24px; border-radius:6px; display:inline-flex; align-items:center; gap:10px;
  transition:all 0.15s; cursor:pointer; border:1px solid transparent;
}
.btn-primary{background:var(--signal); color:#08150E; font-weight:600;}
.btn-primary:hover{background:#4EE8A6; transform:translateY(-1px);}
.btn-secondary{border-color:rgba(255,255,255,0.25); color:var(--text-dim); backdrop-filter:blur(4px);}
.btn-secondary:hover{border-color:var(--text-dim); color:var(--text);}

/* System status monitor widget */
.monitor{
  background:rgba(17,24,38,0.82); backdrop-filter:blur(6px);
  border:1px solid var(--border); border-radius:12px; padding:26px 26px 22px;
}
.monitor-head{
  display:flex; justify-content:space-between; align-items:center;
  font-family:var(--mono); font-size:11.5px; color:var(--text-faint);
  text-transform:uppercase; letter-spacing:0.1em;
  margin-bottom:18px; padding-bottom:16px; border-bottom:1px solid var(--border-soft);
}
.monitor-head .live{display:flex; align-items:center; gap:6px; color:var(--signal);}
.monitor-head .live .dot{width:5px; height:5px; border-radius:50%; background:var(--signal); animation:blink 2s infinite;}
@keyframes blink{0%,100%{opacity:1;} 50%{opacity:0.35;}}

.pulse-wrap{width:100%; height:64px; margin-bottom:18px;}
.pulse-wrap svg{width:100%; height:100%;}
.pulse-line{
  fill:none; stroke:var(--signal); stroke-width:1.6;
  stroke-dasharray:400; stroke-dashoffset:400;
  animation:draw 3.4s ease-in-out infinite;
}
@keyframes draw{ 0%{stroke-dashoffset:400;} 45%{stroke-dashoffset:0;} 100%{stroke-dashoffset:0;} }

.monitor-stats{display:grid; grid-template-columns:1fr 1fr; gap:16px;}
.mstat .num{font-family:var(--mono); font-size:24px; font-weight:500; color:var(--text);}
.mstat .label{font-size:11.5px; color:var(--text-faint); margin-top:4px;}

.slide-dots{position:absolute; bottom:40px; left:50%; transform:translateX(-50%); z-index:4; display:flex; gap:10px;}
.sdot{width:28px; height:3px; border-radius:2px; background:rgba(255,255,255,0.25); border:none; cursor:pointer; transition:background 0.2s;}
.sdot.active{background:var(--signal);}

.scroll-cue{
  position:absolute; bottom:38px; right:40px; z-index:4;
  width:26px; height:42px; border:1px solid rgba(255,255,255,0.35); border-radius:14px;
  display:flex; justify-content:center; padding-top:8px;
}
.scroll-cue span{width:3px; height:8px; background:var(--signal); border-radius:2px; animation:scrolldown 1.8s ease-in-out infinite;}
@keyframes scrolldown{ 0%{opacity:1; transform:translateY(0);} 100%{opacity:0; transform:translateY(10px);} }

@media (max-width:720px){ .scroll-cue{display:none;} .cover{min-height:600px;} }
@media (prefers-reduced-motion: reduce){
  .slide-bg{transition:none;}
  .slide{transition:opacity 0.4s ease;}
  .scroll-cue span{animation:none;}
  .monitor-head .live .dot{animation:none;}
  .pulse-line{animation:none; stroke-dashoffset:0;}
}

/* ---------- SECTION HEAD ---------- */
.section-head{margin-bottom:48px; max-width:640px;}
.section-head h2{font-size:clamp(26px,3vw,34px); margin-top:16px;}
.section-head p{color:var(--text-dim); margin-top:12px; font-size:15.5px;}

/* ---------- EXPERTISE ---------- */
.expertise-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:1px;
  background:var(--border-soft); border:1px solid var(--border-soft); border-radius:12px; overflow:hidden;
}
@media (max-width:860px){ .expertise-grid{grid-template-columns:repeat(2,1fr);} }
@media (max-width:560px){ .expertise-grid{grid-template-columns:1fr;} }
.exp-item{background:var(--surface); padding:28px 26px; transition:background 0.2s;}
.exp-item:hover{background:var(--surface-2);}
.exp-item .icon{width:36px; height:36px; margin-bottom:16px; color:var(--signal);}
.exp-item h3{font-size:16px; font-weight:600;}
.exp-item p{font-size:13.5px; color:var(--text-faint); margin-top:8px;}

/* ---------- SPECIALIZATION ---------- */
.spec-list{display:flex; flex-direction:column;}
.spec-row{
  display:grid; grid-template-columns:220px 1fr; gap:40px;
  padding:36px 0; border-top:1px solid var(--border-soft); align-items:start;
}
.spec-row:last-child{border-bottom:1px solid var(--border-soft);}
@media (max-width:720px){ .spec-row{grid-template-columns:1fr; gap:14px;} }
.spec-tag{font-family:var(--mono); font-size:12px; color:var(--text-faint); text-transform:uppercase; letter-spacing:0.1em; padding-top:4px;}
.spec-body h3{font-size:21px; margin-bottom:10px;}
.spec-body p{color:var(--text-dim); font-size:15px; max-width:560px;}

/* ---------- EXPERIENCE / STATS ---------- */
.stats-band{
  display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
  background:var(--border-soft); border:1px solid var(--border-soft); border-radius:12px; overflow:hidden;
  margin-bottom:40px;
}
@media (max-width:860px){ .stats-band{grid-template-columns:repeat(2,1fr);} }
.stat-cell{background:var(--surface); padding:32px 24px;}
.stat-cell .num{font-family:var(--mono); font-size:30px; color:var(--signal); font-weight:500;}
.stat-cell .label{font-size:13px; color:var(--text-dim); margin-top:8px; line-height:1.4;}

.cert-card{
  display:flex; align-items:center; gap:24px;
  background:var(--surface); border:1px solid var(--border); border-radius:12px;
  padding:24px 28px; margin-bottom:40px;
}
.cert-badge{width:84px; height:84px; border-radius:10px; flex-shrink:0; object-fit:cover;}
.cert-info h3{font-size:17px; margin:6px 0 8px;}
.cert-info p{font-size:14px; color:var(--text-dim); line-height:1.55;}
@media (max-width:600px){ .cert-card{flex-direction:column; align-items:flex-start;} }

.exp-list{display:grid; grid-template-columns:1fr 1fr; gap:14px 40px;}
@media (max-width:720px){ .exp-list{grid-template-columns:1fr;} }
.exp-list li{
  list-style:none; display:flex; gap:12px; align-items:flex-start;
  color:var(--text-dim); font-size:14.5px; padding:10px 0; border-bottom:1px solid var(--border-soft);
}
.exp-list li::before{content:''; width:5px; height:5px; margin-top:8px; border-radius:50%; background:var(--signal); flex-shrink:0;}

/* ---------- PROJECTS ---------- */
.tag-cloud{display:flex; flex-wrap:wrap; gap:12px; margin:8px 0 28px;}
.tag{
  font-family:var(--mono); font-size:13px; color:var(--text-dim);
  border:1px solid var(--border); border-radius:20px; padding:9px 18px; transition:all 0.15s;
}
.tag:hover{border-color:var(--signal-dim); color:var(--text);}

.highlight-card{
  background:var(--surface); border:1px solid var(--border); border-radius:12px;
  padding:26px 28px; margin-bottom:24px; max-width:700px;
}
.highlight-tag{font-family:var(--mono); font-size:11.5px; text-transform:uppercase; letter-spacing:0.1em; color:var(--signal); margin-bottom:10px;}
.highlight-card p{color:var(--text-dim); font-size:15px; line-height:1.65;}
.highlight-card strong{color:var(--text); font-weight:600;}

.confidential-note{
  font-size:13px; color:var(--text-faint); font-style:italic;
  border-left:2px solid var(--border); padding-left:14px; max-width:520px;
}

/* ---------- APPROACH ---------- */
.approach-band{
  background:var(--surface); border:1px solid var(--border); border-radius:14px;
  padding:48px; display:grid; grid-template-columns:repeat(4,1fr); gap:1px; position:relative;
}
@media (max-width:860px){ .approach-band{grid-template-columns:1fr 1fr; padding:32px;} }
@media (max-width:560px){ .approach-band{grid-template-columns:1fr;} }
.principle{padding:0 24px; border-left:1px dashed var(--border);}
.principle:first-child{border-left:none; padding-left:0;}
@media (max-width:860px){ .principle:nth-child(odd){border-left:none; padding-left:0;} }
.principle .n{font-family:var(--mono); font-size:12px; color:var(--signal); letter-spacing:0.08em;}
.principle h3{font-size:16.5px; margin:10px 0 8px;}
.principle p{font-size:13.5px; color:var(--text-faint); line-height:1.55;}

/* ---------- CONTACT ---------- */
.contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:64px;}
@media (max-width:860px){ .contact-grid{grid-template-columns:1fr; gap:40px;} }
.contact-info h2{font-size:clamp(26px,3vw,32px); margin-bottom:16px;}
.contact-info p{color:var(--text-dim); font-size:15.5px; max-width:420px; margin-bottom:28px;}
.contact-line{display:flex; gap:12px; align-items:center; font-family:var(--mono); font-size:14px; color:var(--text-dim); margin-bottom:12px;}
.contact-line span.k{color:var(--text-faint); min-width:80px; display:inline-block;}

form{display:flex; flex-direction:column; gap:16px;}
.hp-field{position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden;}
.field label{font-family:var(--mono); font-size:11.5px; text-transform:uppercase; letter-spacing:0.08em; color:var(--text-faint); display:block; margin-bottom:8px;}
.field input, .field textarea{
  width:100%; background:var(--surface); border:1px solid var(--border); border-radius:7px;
  padding:13px 14px; color:var(--text); font-family:var(--sans); font-size:14.5px; transition:border-color 0.15s;
}
.field input:focus, .field textarea:focus{outline:none; border-color:var(--signal); background:var(--surface-2);}
.field textarea{resize:vertical; min-height:110px;}
.submit-btn{align-self:flex-start; margin-top:6px;}
.form-status{font-size:13px; color:var(--text-dim); min-height:18px;}

/* ---------- FOOTER ---------- */
footer{border-top:1px solid var(--border-soft); padding:36px 0;}
.footer-row{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px;}
.footer-row .fbrand{font-family:var(--mono); font-size:13px; color:var(--text-faint);}
.footer-links{display:flex; gap:26px;}
.footer-links a{font-size:13px; color:var(--text-faint);}
.footer-links a:hover{color:var(--text-dim);}

/* ---------- REVEAL ANIMATION ---------- */
.reveal{opacity:0; transform:translateY(16px); transition:opacity 0.6s ease, transform 0.6s ease;}
.reveal.in{opacity:1; transform:translateY(0);}
@media (prefers-reduced-motion: reduce){ .reveal{opacity:1; transform:none; transition:none;} }

/* ---------- MOBILE MENU ---------- */
.mobile-menu{
  display:none; position:fixed; inset:0; z-index:200; background:rgba(10,14,20,0.98);
  flex-direction:column; padding:24px 32px;
}
.mobile-menu.open{display:flex;}
.mobile-menu .close-row{display:flex; justify-content:flex-end;}
.mobile-menu .close-row button{background:none; border:1px solid var(--border); border-radius:6px; width:38px; height:38px; color:var(--text); font-size:18px;}
.mobile-menu .m-links{display:flex; flex-direction:column; gap:26px; margin-top:56px;}
.mobile-menu .m-links a{font-size:22px; color:var(--text);}