:root{--bg:#0b1220;--card:#0e1726;--muted:#94a3b8;--text:#e5e7eb;--accent:#22d3ee;--accent2:#16a34a;--ring:#38bdf8}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Noto Sans',sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible{outline:3px solid var(--ring);outline-offset:2px}
img{max-width:100%;height:auto;display:block}
.container{width:min(1100px,92vw);margin-inline:auto}
.section{padding:2rem 0}
.card{background:var(--card);border:1px solid #1f2937;border-radius:16px;padding:1rem}
/* Header */
.site-header{position:sticky;top:0;background:#0b1220e6;backdrop-filter:blur(8px);border-bottom:1px solid #1f2937;z-index:40}
.nav{display:flex;justify-content:space-between;align-items:center;padding:.8rem 0}
.brand{display:flex;gap:.6rem;align-items:center}
.brand strong{font-weight:800;letter-spacing:.5px}
.navlinks{display:flex;gap:1rem;align-items:center}
.hamburger{display:none;position:relative;width:42px;height:42px;border-radius:10px;border:1px solid #233044;background:#0b1220;color:#fff}
.hamburger span{position:absolute;left:10px;right:10px;height:2px;background:#e5e7eb;border-radius:2px}
.hamburger span:nth-child(1){top:12px}.hamburger span:nth-child(2){top:20px}.hamburger span:nth-child(3){top:28px}
@media (max-width:900px){
 .hamburger{display:inline-block}
 .navlinks{position:fixed;inset:auto 0 0 0;transform:translateY(100%);opacity:0;pointer-events:none;display:flex;flex-direction:column;gap:0;background:#0b1220f0;padding:1rem 1rem 1.5rem;border-top:1px solid #1f2937}
 .navlinks a{padding:.9rem 0;border-bottom:1px solid #111827;width:100%}
 .navlinks.open{transform:translateY(0);opacity:1;pointer-events:auto}
}
/* Hero */
.hero{display:grid;gap:1.6rem;grid-template-columns:1.1fr .9fr;align-items:center;padding:2.2rem 0}
@media (max-width:900px){.hero{grid-template-columns:1fr}}
.hero h1{font-size:clamp(1.9rem,3.6vw,3.2rem);line-height:1.15;margin:.2rem 0 .6rem}
h2{font-size:clamp(1.3rem,2.1vw,1.9rem);margin:1.1rem 0 .6rem}
h3{font-size:clamp(1.05rem,1.4vw,1.2rem);margin:.5rem 0 .35rem;color:#cbd5e1}
p{margin:.5rem 0}
.muted{color:var(--muted)}
.figure{border:1px solid #233044;border-radius:16px;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.3)}
.btn{display:inline-block;padding:.85rem 1.15rem;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent2));color:#0b1220;font-weight:700;border:none;box-shadow:0 10px 24px rgba(34,211,238,.25);transition:transform .12s ease,box-shadow .12s ease}
.btn:hover{transform:translateY(-1px);text-decoration:none;box-shadow:0 14px 28px rgba(34,211,238,.3)}
.btn:active{transform:translateY(0)}
/* Posts */
.post{max-width:75ch;margin-inline:auto}
.footergrid{display:grid;gap:1.2rem;grid-template-columns:2fr 1fr 1fr}
@media (max-width:900px){.footergrid{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.footergrid{grid-template-columns:1fr}}
/* A11y Skip */
.skip{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip:focus{left:8px;top:8px;width:auto;height:auto;background:#fff;color:#111;padding:.4rem .6rem;border-radius:.5rem;z-index:50}