:root{
  --bg:#0a0e14;
  --bg-alt:#0f1420;
  --surface:#141b2a;
  --border:#232c3d;
  --text:#e8ecf1;
  --text-dim:#8892a4;
  --accent:#4fd1c5;
  --accent-2:#7c9eff;
  --danger:#ff6b6b;
  --radius:10px;
  --maxw:1100px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,sans-serif;
  line-height:1.6;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:96px 0}
h1,h2,h3{font-weight:700;letter-spacing:-0.02em}
h2{font-size:clamp(1.7rem,3vw,2.4rem);margin-bottom:12px}
.eyebrow{
  color:var(--accent);
  font-size:0.8rem;
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:0.12em;
  margin-bottom:10px;
  display:block;
}
.lede{color:var(--text-dim);font-size:1.05rem;max-width:640px;margin-bottom:48px}

/* NAV */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(10,14,20,0.85);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
nav{
  max-width:var(--maxw);margin:0 auto;padding:16px 24px;
  display:flex;align-items:center;justify-content:space-between;
}
.logo{font-weight:800;font-size:1.05rem;letter-spacing:-0.01em}
.logo span{color:var(--accent)}
.nav-links{display:flex;gap:28px;font-size:0.92rem;color:var(--text-dim)}
.nav-links a:hover{color:var(--text)}
.nav-cta{
  background:var(--accent);color:#0a0e14;padding:8px 18px;border-radius:8px;
  font-weight:600;font-size:0.9rem;
}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.4rem;cursor:pointer}
@media(max-width:800px){
  .nav-links{
    position:fixed;top:60px;left:0;right:0;bottom:0;
    background:var(--bg);flex-direction:column;padding:32px 24px;gap:20px;
    transform:translateX(100%);transition:transform .25s ease;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-toggle{display:block}
}

/* HERO */
.hero{padding:120px 0 90px;position:relative}
.hero-top{display:flex;justify-content:space-between;align-items:center;gap:56px}
.hero-copy{flex:1;min-width:0}

.portrait-frame{
  position:relative;
  width:260px;height:260px;
  flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
}
.portrait-frame::before{
  content:"";
  position:absolute;
  inset:-34px;
  background:radial-gradient(circle at 35% 30%, rgba(79,209,197,0.22), rgba(124,158,255,0.10) 45%, transparent 72%);
  filter:blur(6px);
  pointer-events:none;
}
.portrait-frame::after{
  content:"";
  position:absolute;
  inset:-10px;
  border-radius:50%;
  background:conic-gradient(from 210deg, #4fd1c5, #9fb8ff 30%, #4fd1c5 55%, #2a3548 75%, #4fd1c5 100%);
  opacity:0.55;
  filter:blur(0.3px);
  -webkit-mask:radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 2px));
  mask:radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 2px));
}
.hero-photo{
  position:relative;
  z-index:2;
  width:100%;height:100%;
  border-radius:50%;
  object-fit:cover;
  filter:saturate(1.05) contrast(1.03);
  box-shadow:
    0 0 0 6px var(--bg),
    0 0 0 7px rgba(255,255,255,0.06),
    0 20px 40px -12px rgba(0,0,0,0.65),
    0 8px 18px -6px rgba(79,209,197,0.18);
}
@media(max-width:800px){
  .hero-top{flex-direction:column-reverse;text-align:center;gap:32px}
  .portrait-frame{width:190px;height:190px}
  .hero-copy p{margin-left:auto;margin-right:auto}
  .btn-row{justify-content:center}
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--border);background:var(--surface);
  padding:6px 14px;border-radius:999px;font-size:0.82rem;color:var(--text-dim);margin-bottom:28px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent)}
.hero h1{font-size:clamp(2.2rem,5vw,3.4rem);max-width:780px;margin-bottom:20px}
.hero h1 .grad{background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--text-dim);font-size:1.1rem;max-width:600px;margin-bottom:36px}
.btn-row{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  padding:12px 24px;border-radius:8px;font-weight:600;font-size:0.95rem;
  display:inline-flex;align-items:center;gap:8px;transition:transform .15s ease,opacity .15s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#0a0e14}
.btn-outline{border:1px solid var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--accent)}

/* STATS */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin-top:56px}
.stat{background:var(--bg-alt);padding:26px 20px;text-align:center}
.stat b{display:block;font-size:1.8rem;color:var(--accent)}
.stat span{color:var(--text-dim);font-size:0.85rem}
@media(max-width:700px){.stats{grid-template-columns:repeat(2,1fr)}}

/* SECTION BG ALT */
.alt{background:var(--bg-alt)}

/* ABOUT */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.about-grid ul{list-style:none;margin-top:20px}
.about-grid li{padding:10px 0 10px 26px;position:relative;color:var(--text-dim);border-bottom:1px solid var(--border)}
.about-grid li:last-child{border-bottom:none}
.about-grid li::before{content:"→";position:absolute;left:0;color:var(--accent)}
@media(max-width:800px){.about-grid{grid-template-columns:1fr}}

/* PROJECTS CAROUSEL */
.carousel{display:flex;align-items:center;gap:14px}
.carousel-viewport{flex:1;overflow:hidden}
.carousel-track{display:flex;gap:20px;transition:transform .4s cubic-bezier(.4,0,.2,1)}
.carousel-track .card{flex:0 0 calc((100% - 40px) / 3);min-width:0}
.carousel-nav{
  flex-shrink:0;width:40px;height:40px;border-radius:50%;
  background:var(--surface);border:1px solid var(--border);color:var(--text);
  font-size:1.4rem;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:border-color .15s ease,color .15s ease;
}
.carousel-nav:hover{border-color:var(--accent);color:var(--accent)}
.carousel-nav:disabled{opacity:0.3;cursor:default;pointer-events:none}
.carousel-dots{display:flex;justify-content:center;gap:8px;margin-top:24px}
.carousel-dots .dot-btn{width:8px;height:8px;border-radius:50%;background:var(--border);border:none;cursor:pointer;padding:0;transition:background .15s ease,transform .15s ease}
.carousel-dots .dot-btn.active{background:var(--accent);transform:scale(1.3)}
@media(max-width:900px){
  .carousel-track .card{flex:0 0 calc((100% - 20px) / 2)}
}
@media(max-width:640px){
  .carousel-track .card{flex:0 0 100%}
  .carousel-nav{width:34px;height:34px;font-size:1.2rem}
}

.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;transition:border-color .15s ease,transform .15s ease;
}
.card:hover{border-color:var(--accent);transform:translateY(-2px)}
.card .proj-name{display:block;color:var(--text-dim);font-size:0.78rem;font-weight:600;margin-bottom:6px}
.card h3{font-size:1.15rem;margin-bottom:8px;line-height:1.3}
.card .tag{display:inline-block;background:rgba(79,209,197,0.1);color:var(--accent);font-size:0.72rem;font-weight:600;padding:3px 9px;border-radius:6px;margin-bottom:12px;text-transform:uppercase;letter-spacing:0.04em}
.card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:12px}
.status{font-size:0.7rem;font-weight:600;white-space:nowrap;padding:3px 9px;border-radius:6px;text-transform:uppercase;letter-spacing:0.03em}
.status-prod{background:rgba(79,209,197,0.12);color:var(--accent)}
.status-internal{background:rgba(230,190,80,0.12);color:#e6be50}
.status-research{background:rgba(124,158,255,0.12);color:var(--accent-2)}
.card p{color:var(--text-dim);font-size:0.92rem;margin-bottom:14px}
.card .outcomes{list-style:none;margin-bottom:14px}
.card .outcomes li{font-size:0.85rem;color:var(--text-dim);padding:3px 0 3px 20px;position:relative}
.card .outcomes li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}
.card .impact{font-size:0.85rem;color:var(--accent-2);font-weight:600}
@media(max-width:800px){.project-grid{grid-template-columns:1fr}}

/* PRINCIPLES */
.principle-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.principle{border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.principle .num{color:var(--accent);font-weight:800;font-size:0.85rem;margin-bottom:8px}
.principle h3{font-size:1rem;margin-bottom:6px}
.principle p{color:var(--text-dim);font-size:0.88rem}
@media(max-width:800px){.principle-grid{grid-template-columns:1fr}}

/* PROCESS */
.process-list{counter-reset:step;max-width:680px}
.process-list li{
  list-style:none;counter-increment:step;position:relative;padding:16px 0 16px 52px;border-bottom:1px solid var(--border);
}
.process-list li:last-child{border-bottom:none}
.process-list li::before{
  content:counter(step);position:absolute;left:0;top:14px;width:34px;height:34px;
  border:1px solid var(--accent);color:var(--accent);border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.85rem;
}
.process-list b{display:block;margin-bottom:2px}
.process-list span{color:var(--text-dim);font-size:0.9rem}

/* AI SECURITY */
.sec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.sec-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.sec-item h3{font-size:0.98rem;margin-bottom:6px;color:var(--accent)}
.sec-item p{color:var(--text-dim);font-size:0.85rem}
@media(max-width:800px){.sec-grid{grid-template-columns:1fr}}

/* STACK */
.stack-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stack-group h3{font-size:0.85rem;color:var(--accent);text-transform:uppercase;letter-spacing:0.06em;margin-bottom:12px}
.stack-group ul{list-style:none}
.stack-group li{color:var(--text-dim);font-size:0.9rem;padding:5px 0}
@media(max-width:800px){.stack-groups{grid-template-columns:repeat(2,1fr)}}

/* WRITING */
.write-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.write-card{border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.write-card .eyebrow{margin-bottom:8px}
.write-card h3{font-size:1.05rem;margin-bottom:8px}
.write-card p{color:var(--text-dim);font-size:0.88rem}
@media(max-width:800px){.write-grid{grid-template-columns:1fr}}

/* CONTACT */
.contact-box{
  background:linear-gradient(135deg,rgba(79,209,197,0.08),rgba(124,158,255,0.08));
  border:1px solid var(--border);border-radius:var(--radius);padding:56px;text-align:center;
}
.contact-box h2{margin-bottom:14px}
.contact-box p{color:var(--text-dim);margin-bottom:30px;max-width:520px;margin-left:auto;margin-right:auto}

footer{border-top:1px solid var(--border);padding:36px 0;color:var(--text-dim);font-size:0.85rem}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;align-items:center}
footer .disclaimer{width:100%;margin-top:18px;font-size:0.78rem;opacity:0.7}