:root{
  --bg:#0d1117;
  --surface:#161b22;
  --surface-2:#1c232d;
  --border:#262d36;
  --text:#e6edf3;
  --muted:#8b949e;
  --primary:#3fb950;
  --accent:#58e1c4;
  --danger:#f85149;
  --radius:10px;
  --maxw:1100px;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  line-height:1.6;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:48px 48px;
  min-height:100vh;
}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.accent{color:var(--primary)}
.muted{color:var(--muted)}
.grad{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* nav */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(10px);background:rgba(13,17,23,.8);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 20px}
.logo{font-family:var(--mono);font-weight:700;font-size:14px}
.nav nav{display:flex;gap:24px}
.nav nav a{font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);transition:color .2s}
.nav nav a:hover{color:var(--primary)}
.menu-btn{display:none;background:none;border:1px solid var(--border);color:var(--text);font-size:20px;padding:4px 10px;border-radius:6px;cursor:pointer}
.caret{display:inline-block;width:8px;height:14px;background:var(--primary);margin-left:4px;vertical-align:middle;animation:blink 1s steps(1) infinite}
@keyframes blink{0%,49%{opacity:1}50%,100%{opacity:0}}

/* hero */
.hero{padding:80px 0 60px}
.hero-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center}
.tag{font-family:var(--mono);font-size:12px;color:var(--primary);text-transform:uppercase;letter-spacing:.3em;margin-bottom:18px}
.hero h1{font-size:clamp(2.2rem,5vw,4rem);font-weight:800;line-height:1.05;letter-spacing:-.02em;margin-bottom:20px}
.lead{font-size:1.1rem;color:var(--muted);max-width:520px;margin-bottom:32px}
.cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 20px;border-radius:8px;font-family:var(--mono);font-size:13px;transition:all .2s;border:1px solid transparent}
.btn.primary{background:var(--primary);color:#0d1117;font-weight:600}
.btn.primary:hover{box-shadow:0 0 30px rgba(63,185,80,.4)}
.btn.ghost{border-color:var(--border);color:var(--text)}
.btn.ghost:hover{border-color:var(--primary);color:var(--primary)}

.code-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;font-family:var(--mono);font-size:13px;box-shadow:0 20px 40px rgba(0,0,0,.4)}
.code-head{display:flex;align-items:center;gap:8px;padding-bottom:12px;border-bottom:1px solid var(--border);margin-bottom:14px}
.code-head span{width:11px;height:11px;border-radius:50%;background:var(--danger)}
.code-head span:nth-child(2){background:#d29922}
.code-head span:nth-child(3){background:var(--primary)}
.code-head em{margin-left:8px;color:var(--muted);font-style:normal;font-size:11px}
.code-card pre{color:var(--muted);white-space:pre-wrap;word-break:break-word}

/* sections */
.section{padding:80px 0;border-top:1px solid var(--border)}
.section.alt{background:var(--surface)}
.section h2{font-size:clamp(1.7rem,3vw,2.4rem);font-weight:700;margin-bottom:32px;letter-spacing:-.01em}
.section h2 .num{font-family:var(--mono);font-size:14px;color:var(--primary);margin-right:14px;letter-spacing:.2em}

.cards{display:grid;gap:18px}
.cards.two{grid-template-columns:repeat(2,1fr)}
.cards.three{grid-template-columns:repeat(3,1fr)}
.card{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:all .2s}
.card:hover{border-color:var(--primary);transform:translateY(-3px)}
.section.alt .card{background:var(--bg)}
.card h3{font-size:1.2rem;margin-bottom:8px}
.card .kicker{font-family:var(--mono);font-size:11px;color:var(--primary);text-transform:uppercase;letter-spacing:.15em;margin-bottom:14px}
.card ul{list-style:none;font-family:var(--mono);font-size:14px}
.card ul li{padding:4px 0;color:var(--text)}
.card ul li::before{content:"→ ";color:var(--muted)}

/* dynamic project / article cards */
.item-card{display:flex;flex-direction:column;gap:10px}
.item-card .title{font-family:var(--mono);font-size:1.15rem;color:var(--text);font-weight:700}
.item-card .blurb{color:var(--muted);font-size:.95rem}
.item-card .tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.item-card .tag-pill{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:.1em;border:1px solid var(--border);color:var(--muted);padding:3px 8px;border-radius:4px}
.item-card .read{font-family:var(--mono);font-size:12px;color:var(--primary);margin-top:8px}

/* contact */
.card.contact p{font-family:var(--mono);font-size:14px;padding:6px 0}
.card.contact a{color:var(--accent)}
.card.contact a:hover{text-decoration:underline}

/* detail pages */
.detail h1{font-size:clamp(2rem,4vw,3rem);margin-bottom:14px;letter-spacing:-.02em}
.detail .meta{font-family:var(--mono);font-size:13px;color:var(--muted);margin-bottom:28px}
.detail .cover{width:100%;max-height:380px;object-fit:cover;border-radius:var(--radius);border:1px solid var(--border);margin-bottom:28px}
.detail .content{font-size:1.05rem;color:var(--text)}
.detail .content p{margin:14px 0;color:#c9d1d9}
.detail .content h2,.detail .content h3{margin:28px 0 12px}
.detail .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}

/* footer */
.footer{border-top:1px solid var(--border);padding:30px 0;margin-top:40px}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-family:var(--mono);font-size:12px;color:var(--muted)}

/* responsive */
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .cards.three{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .nav nav{display:none;position:absolute;top:60px;left:0;right:0;flex-direction:column;background:var(--surface);border-bottom:1px solid var(--border);padding:18px;gap:14px}
  .nav nav.open{display:flex}
  .menu-btn{display:inline-block}
  .cards.two,.cards.three{grid-template-columns:1fr}
  .section{padding:60px 0}
  .hero{padding:50px 0 40px}
}