:root{
  --bg:#0b0e11;
  --bg-alt:#12161b;
  --card:#151a20;
  --border:#232a33;
  --text:#dbe2e8;
  --muted:#8a97a3;
  --accent:#4ee1a0;
  --accent-dim:#2d7a5b;
  --warn:#e1b34e;
  --danger:#e17a4e;
  --mono:'SFMono-Regular',Consolas,'Liberation Mono',Menlo,Courier,monospace;
  --sans:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  line-height:1.6;
}
a{color:var(--accent);text-decoration:none;}
a:hover{text-decoration:underline;}
.wrap{max-width:1000px;margin:0 auto;padding:0 24px;}
.wrap-wide{max-width:1160px;margin:0 auto;padding:0 24px;}

/* Nav */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,14,17,0.9);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--border);
}
nav{
  display:flex;align-items:center;justify-content:space-between;
  max-width:1160px;margin:0 auto;padding:14px 24px;
}
.brand{
  font-family:var(--mono);color:var(--text);font-weight:600;font-size:15px;
  display:flex;align-items:center;gap:8px;
}
.brand .dot{color:var(--accent);animation:dot-blink 1.8s ease-in-out infinite;}
@keyframes dot-blink{
  0%,100%{opacity:1;}
  50%{opacity:.25;}
}
a.brand{text-decoration:none;}
a.brand:hover{text-decoration:none;}
.navlinks{display:flex;gap:22px;font-family:var(--mono);font-size:13px;}
.navlinks a{color:var(--muted);}
.navlinks a:hover{color:var(--accent);text-decoration:none;}
.navlinks a.active{color:var(--accent);}

/* Breadcrumb */
.breadcrumb{
  font-family:var(--mono);font-size:12.5px;color:var(--muted);
  margin:28px 0 6px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--accent);}

/* Hero */
.hero{padding:90px 0 60px;position:relative;overflow:hidden;}
.hero.small{padding:56px 0 40px;}
.network-bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  z-index:0;
  opacity:.55;
  pointer-events:none;
}
.hero-content{position:relative;z-index:1;}
.kicker{
  font-family:var(--mono);color:var(--accent);font-size:13px;
  letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;
}
h1{font-size:2.6rem;margin:0 0 16px;line-height:1.15;color:#fff;}
h1.page-title{font-size:2.1rem;}
.lede{color:var(--muted);font-size:1.08rem;max-width:640px;margin-bottom:28px;}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  font-family:var(--mono);font-size:13px;padding:10px 18px;border-radius:6px;
  border:1px solid var(--border);color:var(--text);display:inline-block;
}
.btn.primary{background:var(--accent);color:#08120d;border-color:var(--accent);font-weight:600;}
.btn.primary:hover{background:#3fc98f;text-decoration:none;}
.btn:hover{border-color:var(--accent);text-decoration:none;}

section{padding:64px 0;border-top:1px solid var(--border);}
section.tight{padding:44px 0;}
.section-head{margin-bottom:34px;}
.section-head .tag{
  font-family:var(--mono);color:var(--accent);font-size:12px;
  text-transform:uppercase;letter-spacing:.08em;
}
.section-head h2{font-size:1.7rem;margin:6px 0 0;color:#fff;}
.section-head p{color:var(--muted);margin-top:8px;max-width:620px;}

/* Project groups / grids */
.group{margin-bottom:44px;}
.group h3{
  font-family:var(--mono);font-size:14px;color:var(--warn);
  text-transform:uppercase;letter-spacing:.05em;margin-bottom:16px;
}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:16px;}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:10px;
  padding:20px;display:flex;flex-direction:column;gap:10px;
  transition:border-color .15s ease;
}
a.card{color:inherit;}
a.card:hover{border-color:var(--accent-dim);text-decoration:none;}
.card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;}
.card h4{margin:0;font-size:1.02rem;color:#fff;}
.status{
  font-family:var(--mono);font-size:10.5px;padding:3px 8px;border-radius:20px;
  white-space:nowrap;text-transform:uppercase;letter-spacing:.04em;
}
.status.active{background:rgba(78,225,160,.12);color:var(--accent);border:1px solid var(--accent-dim);}
.status.completed{background:rgba(78,225,160,.12);color:var(--accent);border:1px solid var(--accent-dim);}
.status.prototype{background:rgba(225,179,78,.12);color:var(--warn);border:1px solid #7a611f;}
.status.archived{background:rgba(138,151,163,.12);color:var(--muted);border:1px solid var(--border);}
.card p{color:var(--muted);font-size:.92rem;margin:0;}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:6px;}
.tags span{
  font-family:var(--mono);font-size:11px;color:var(--muted);
  background:var(--bg-alt);border:1px solid var(--border);padding:2px 8px;border-radius:4px;
}
.more{font-family:var(--mono);font-size:12px;color:var(--accent);margin-top:2px;}

/* Featured projects marquee */
.marquee{
  overflow:hidden;
  -webkit-mask-image:linear-gradient(to right, transparent 0, black 40px, black calc(100% - 40px), transparent 100%);
  mask-image:linear-gradient(to right, transparent 0, black 40px, black calc(100% - 40px), transparent 100%);
}
.marquee-track{
  display:flex;
  gap:16px;
  width:max-content;
  animation:marquee-scroll 32s linear infinite;
}
.marquee-track:hover{
  animation-play-state:paused;
}
.marquee-track .card{
  width:300px;
  flex:0 0 auto;
}
@keyframes marquee-scroll{
  from{transform:translateX(0);}
  to{transform:translateX(-50%);}
}
@media (prefers-reduced-motion: reduce){
  .marquee-track{animation:none;}
}
@media (max-width:700px){
  .marquee-track .card{width:250px;}
}

/* Detail pages */
.detail-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:8px;}
.detail-block{margin-bottom:40px;}
.detail-block h3{
  font-family:var(--mono);font-size:13px;color:var(--warn);
  text-transform:uppercase;letter-spacing:.05em;margin-bottom:14px;
}
.detail-block h4{color:#fff;font-size:1rem;margin:20px 0 8px;}
.detail-block p{color:var(--text);}
.detail-block ul, .detail-block ol{color:var(--text);padding-left:22px;}
.detail-block li{margin-bottom:6px;}
.callout{
  background:var(--bg-alt);border:1px solid var(--border);border-left:3px solid var(--accent);
  border-radius:6px;padding:14px 16px;color:var(--muted);font-size:.92rem;margin:16px 0;
}
.callout.warn{border-left-color:var(--warn);}
.callout.danger{border-left-color:var(--danger);}
table{width:100%;border-collapse:collapse;margin:14px 0;font-size:.9rem;}
th,td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--border);}
th{font-family:var(--mono);color:var(--muted);text-transform:uppercase;font-size:11px;letter-spacing:.04em;}
td{color:var(--text);}
.arch-flow{
  font-family:var(--mono);font-size:.88rem;color:var(--accent);
  background:var(--bg-alt);border:1px solid var(--border);border-radius:6px;
  padding:14px 16px;overflow-x:auto;white-space:nowrap;margin:16px 0;
}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;}
.related-grid a{
  display:block;background:var(--card);border:1px solid var(--border);border-radius:8px;
  padding:12px 14px;color:var(--text);font-size:.9rem;
}
.related-grid a:hover{border-color:var(--accent-dim);text-decoration:none;color:var(--accent);}
.prevnext{display:flex;justify-content:space-between;gap:16px;margin-top:20px;}
.prevnext a{
  font-family:var(--mono);font-size:12.5px;color:var(--muted);
  border:1px solid var(--border);border-radius:6px;padding:8px 14px;flex:1;
}
.prevnext a:hover{color:var(--accent);border-color:var(--accent-dim);text-decoration:none;}
.prevnext a.next{text-align:right;}

/* Roadmap */
.timeline{display:flex;flex-direction:column;gap:0;}
.tl-row{
  display:grid;grid-template-columns:90px 1fr;gap:18px;padding:16px 0;
  border-bottom:1px solid var(--border);
}
.tl-row:last-child{border-bottom:none;}
.tl-year{font-family:var(--mono);color:var(--accent);font-weight:600;}
.tl-role{color:#fff;font-weight:600;margin-bottom:2px;display:flex;align-items:center;gap:8px;}
.tl-detail{color:var(--muted);font-size:.9rem;}
.current-dot{
  width:8px;height:8px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 6px var(--accent);flex-shrink:0;
  animation:dot-blink 1.8s ease-in-out infinite;
}
.current-dot[hidden]{display:none;}
@media (prefers-reduced-motion: reduce){
  .current-dot{animation:none;}
}
.cert-list{margin-top:36px;}
.cert-list h3{
  font-family:var(--mono);font-size:14px;color:var(--warn);
  text-transform:uppercase;letter-spacing:.05em;margin-bottom:14px;
}
.cert-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;}
.cert-pill{
  background:var(--bg-alt);border:1px solid var(--border);border-radius:8px;
  padding:12px 14px;font-size:.88rem;
}
.cert-pill .yr{font-family:var(--mono);color:var(--accent);font-size:11px;display:block;margin-bottom:4px;}

/* Writing */
.post{
  background:var(--card);border:1px solid var(--border);border-radius:10px;
  padding:22px;margin-bottom:14px;
}
.post h4{margin:0 0 6px;color:#fff;}
.post ol{color:var(--muted);font-size:.92rem;padding-left:20px;margin:10px 0 0;}
.post ol li{margin-bottom:4px;}

footer{
  padding:40px 0 60px;color:var(--muted);font-size:.85rem;
  font-family:var(--mono);border-top:1px solid var(--border);margin-top:20px;
}
footer a{color:var(--accent);}

/* Mobile menu */
.menu-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px;
  width:38px;height:38px;
  background:none;
  border:1px solid var(--border);
  border-radius:6px;
  cursor:pointer;
  padding:0;
}
.menu-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--text);
  transition:transform .2s ease, opacity .2s ease;
}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-toggle.open span:nth-child(2){opacity:0;}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-menu{
  display:none;
  flex-direction:column;
  align-items:stretch;
  background:var(--bg-alt);
  border-top:1px solid var(--border);
}
.mobile-menu.open{display:flex;}
.mobile-menu a{
  font-family:var(--mono);font-size:14px;color:var(--muted);
  padding:16px 24px;border-bottom:1px solid var(--border);
  text-align:center;
}
.mobile-menu a:last-child{border-bottom:none;}
.mobile-menu a.active{color:var(--accent);}

@media (max-width:600px){
  .navlinks{display:none;}
  .menu-toggle{display:flex;}
  h1{font-size:2rem;}
  .tl-row{grid-template-columns:70px 1fr;}
}