:root{--bg:#0b1220;--bg2:#111a2e;--card:#16213a;--line:#23304d;--text:#e6ebf5;--muted:#9aa6bf;--blue:#3b82f6;--blue2:#60a5fa;--radius:12px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{font-family:Inter,system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.65}
h1,h2,h3,.logo{font-family:"Space Grotesk",Inter,sans-serif;line-height:1.2}
a{color:var(--blue2);text-decoration:none}
.container{width:min(1140px,92%);margin:auto}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.header{position:sticky;top:0;z-index:10;background:rgba(11,18,32,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{color:var(--text);font-weight:700;font-size:1.25rem}
.logo-mark{color:var(--blue)}
.nav-links{display:flex;gap:1.4rem;list-style:none;align-items:center}
.nav-links a{color:var(--muted);font-size:.92rem;font-weight:500}
.nav-links a:hover{color:var(--text)}
.nav-toggle,.nav-burger{display:none}
.btn{display:inline-block;background:var(--blue);color:#fff!important;padding:.8rem 1.4rem;border-radius:8px;font-weight:600;border:none;cursor:pointer;transition:.2s;font:inherit;font-weight:600}
.btn:hover{background:#2563eb}
.btn-sm{padding:.5rem 1rem}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text)!important}
.btn-ghost:hover{background:var(--card)}
.hero{padding:7rem 0 5rem;background:radial-gradient(ellipse at top right,rgba(59,130,246,.18),transparent 60%),var(--bg)}
.hero h1{font-size:clamp(2.2rem,5vw,3.8rem);max-width:850px;margin:.6rem 0 1.2rem}
.accent{color:var(--blue2)}
.lead{font-size:1.15rem;color:var(--muted);max-width:640px}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap;margin:2rem 0 3rem}
.cert-strip{display:flex;flex-wrap:wrap;gap:.8rem;list-style:none}
.cert-strip li{border:1px solid var(--line);border-radius:999px;padding:.4rem 1rem;font-size:.85rem;color:var(--muted)}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:600;color:var(--blue2)}
.section{padding:5.5rem 0}
.section-alt{background:var(--bg2)}
.section h2{font-size:clamp(1.7rem,3vw,2.4rem);margin:.5rem 0 1.2rem}
.section p+p{margin-top:1rem}
.muted{color:var(--muted);font-size:.9rem}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:start}
.pillars{display:grid;gap:1rem}
.pillar,.card,.project,.post,.cert{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem}
.pillar h3{color:var(--blue2);margin-bottom:.3rem}
.certs{margin-top:3.5rem}
.certs-title{margin-bottom:1rem}
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.cert strong{display:block;font-size:1.1rem}
.cert span{color:var(--muted);font-size:.9rem}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.3rem;margin-top:2rem}
.card{transition:.2s}
.card:hover,.project:hover{transform:translateY(-4px);border-color:var(--blue)}
.icon{font-size:1.6rem;color:var(--blue2);margin-bottom:.8rem}
.card h3,.project h3{margin-bottom:.5rem;font-size:1.15rem}
.card p,.project p,.post p{color:var(--muted);font-size:.95rem}
.project{transition:.2s}
.tag{display:inline-block;background:rgba(59,130,246,.15);color:var(--blue2);font-size:.75rem;padding:.2rem .7rem;border-radius:999px;margin-bottom:.8rem}
.list-check{list-style:none;display:grid;gap:1rem}
.list-check li{padding-left:1.8rem;position:relative;color:var(--muted)}
.list-check li strong{color:var(--text)}
.list-check li:before{content:"✓";position:absolute;left:0;color:var(--blue2);font-weight:700}
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:1.3rem;margin-top:2rem}
.post time{font-size:.8rem;color:var(--muted)}
.post h3{margin:.4rem 0}
.post h3 a{color:var(--text)}
.read-more{display:inline-block;margin-top:.8rem;font-weight:600;font-size:.9rem}
.newsletter{margin-top:3rem;display:grid;grid-template-columns:1.2fr 1fr;gap:2rem;align-items:center;background:linear-gradient(135deg,#16213a,#1d2c4f);border:1px solid var(--line);border-radius:var(--radius);padding:2.2rem}
.newsletter p{color:var(--muted);margin:.4rem 0 .8rem}
.substack{font-weight:600}
.newsletter-form{display:flex;gap:.6rem}
input,select,textarea{width:100%;background:var(--bg);border:1px solid var(--line);color:var(--text);border-radius:8px;padding:.8rem 1rem;font:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue)}
.contact-info{list-style:none;margin-top:1.5rem;display:grid;gap:.6rem;color:var(--muted)}
.contact-form{display:grid;gap:1rem;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:2rem}
.contact-form label{display:grid;gap:.35rem;font-size:.9rem;color:var(--muted)}
.footer{border-top:1px solid var(--line);padding:2rem 0;color:var(--muted);font-size:.88rem}
.footer-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem}
@media(max-width:900px){
 .grid-2,.newsletter{grid-template-columns:1fr;gap:2rem}
 .cards,.posts,.cert-grid{grid-template-columns:1fr 1fr}
 .nav-burger{display:block;cursor:pointer;width:28px;height:20px;position:relative}
 .nav-burger span,.nav-burger span:before,.nav-burger span:after{position:absolute;width:28px;height:2px;background:var(--text);content:"";left:0}
 .nav-burger span{top:9px}.nav-burger span:before{top:-8px}.nav-burger span:after{top:8px}
 .nav-links{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:var(--bg2);padding:1.5rem;border-bottom:1px solid var(--line)}
 .nav-toggle:checked~.nav-links{display:flex}
}
@media(max-width:600px){
 .cards,.posts,.cert-grid{grid-template-columns:1fr}
 .newsletter-form{flex-direction:column}
 .hero{padding:5rem 0 4rem}
}

/* Hero 3D */
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:2rem;align-items:center}
.hero-3d{position:relative;height:520px;border-radius:20px;background:radial-gradient(circle at 50% 45%,rgba(59,130,246,.22),transparent 65%)}
#shard-canvas{width:100%;height:100%;display:block;touch-action:none;cursor:grab}
.hint{position:absolute;bottom:.6rem;left:0;right:0;text-align:center;font-size:.78rem;color:var(--muted);pointer-events:none}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.hero-3d{height:380px;order:-1}}