:root{
  --bg:#0b0c10; --card:#11131a; --text:#e9ecf1; --muted:#a9b2c3;
  --line:#23283a; --accent:#7aa2ff; --accent2:#5eead4;
  --max: 1080px; --radius: 18px;
  --shadow: 0 12px 40px rgba(0,0,0,.45);
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono","Courier New", monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; font:16px/1.65 system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial;
  background: radial-gradient(1200px 600px at 15% -10%, rgba(122,162,255,.20), transparent 60%),
              radial-gradient(900px 500px at 85% 0%, rgba(94,234,212,.14), transparent 55%),
              var(--bg);
  color:var(--text);
}
a{color:var(--accent); text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%; height:auto}
.wrap{max-width:var(--max); margin:0 auto; padding:28px 18px 76px}
.skip-link{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left:18px; top:18px; width:auto; height:auto; padding:10px 12px;
  background:rgba(0,0,0,.8); border:1px solid var(--line); border-radius:12px; z-index:9999;
}

/* Header / Nav */
.site-header{
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(17,19,26,.95), rgba(17,19,26,.7));
  border-radius:calc(var(--radius) + 6px);
  padding:16px 16px;
  box-shadow:var(--shadow);
  display:flex; align-items:center; justify-content:space-between; gap:14px;
  position:relative; overflow:hidden;
}
.site-header:before{
  content:""; position:absolute; inset:-140px -100px auto auto; width:360px; height:360px;
  background:radial-gradient(circle at 30% 30%, rgba(94,234,212,.32), transparent 60%);
  filter:blur(2px); transform:rotate(18deg);
  pointer-events:none;
}
.brand{
  display:flex;
  gap:12px;
  align-items:center;
  position:relative;
}

.brand-logo-link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
  text-decoration:none;
}

.brand-logo{
  display:block;
  width:72px;
  height:72px;
  object-fit:contain;
  border-radius:14px;
  background:#ffffff;
  box-shadow:0 10px 22px rgba(0,0,0,.35);
  padding:4px;
}

.brand a{color:var(--text); text-decoration:none}
.brand-title{font-weight:800; letter-spacing:.2px}
.brand-sub{font-size:13px; color:var(--muted)}
.nav{display:flex; gap:10px; flex-wrap:wrap; position:relative}
.nav a{
  display:inline-flex; align-items:center; justify-content:center;
  padding:9px 12px; border-radius:999px; border:1px solid transparent;
  background:rgba(255,255,255,.02); color:var(--text);
  text-decoration:none; font-weight:650; font-size:14px;
}
.nav a:hover{border-color:var(--line); background:rgba(255,255,255,.04)}
.nav a[aria-current="page"]{border-color:rgba(122,162,255,.55); background:rgba(122,162,255,.10)}

/* Layout */
.grid{display:grid; grid-template-columns: 1fr; gap:16px; margin-top:16px}
@media(min-width:980px){
  .grid{grid-template-columns: 330px 1fr}
  .sticky{position:sticky; top:16px; height:fit-content}
}
.card{
  border:1px solid var(--line); background:rgba(17,19,26,.75);
  border-radius:var(--radius); box-shadow:0 10px 28px rgba(0,0,0,.35);
}
.inner{padding:16px 16px}
.hero{
  border:1px solid var(--line); border-radius:calc(var(--radius) + 6px);
  background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
  padding:22px 18px; box-shadow:var(--shadow);
  margin-top:16px;
}
.kicker{color:var(--muted); font-size:13px; letter-spacing:.08em; text-transform:uppercase}
h1{margin:10px 0 8px; font-size:34px; line-height:1.12}
h2{margin:26px 0 10px; font-size:24px; line-height:1.25}
h3{margin:18px 0 8px; font-size:18px}
p{margin:0 0 12px}
ul,ol{margin:0 0 12px; padding-left:18px}
li{margin:6px 0}
.sub{margin:0; color:var(--muted); max-width:80ch}
.meta{display:flex; flex-wrap:wrap; gap:10px; color:var(--muted); font-size:13px; margin-top:14px}
.meta span{border:1px dashed rgba(169,178,195,.35); padding:6px 10px; border-radius:999px}
.hr{height:1px; background:var(--line); margin:14px 0}
.note{
  border:1px solid rgba(94,234,212,.35);
  background:linear-gradient(180deg, rgba(94,234,212,.10), rgba(94,234,212,.04));
  padding:12px 12px; border-radius:14px; margin:12px 0;
}
.warn{
  border:1px solid rgba(122,162,255,.35);
  background:linear-gradient(180deg, rgba(122,162,255,.12), rgba(122,162,255,.04));
  padding:12px 12px; border-radius:14px; margin:12px 0;
}
.cta{
  display:flex; flex-wrap:wrap; gap:10px; align-items:center; justify-content:space-between;
  padding:14px 14px; border:1px solid var(--line); border-radius:16px;
  background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
  margin:18px 0;
}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 12px; border-radius:14px; border:1px solid rgba(122,162,255,.45);
  background:rgba(122,162,255,.10); color:var(--text); text-decoration:none; font-weight:750
}
.btn:hover{background:rgba(122,162,255,.16); text-decoration:none}
.btn.secondary{border-color:rgba(94,234,212,.45); background:rgba(94,234,212,.08)}
.btn.secondary:hover{background:rgba(94,234,212,.14)}
.pill{
  display:inline-flex; align-items:center; gap:8px;
  padding:8px 10px; border:1px solid var(--line); border-radius:999px;
  background:rgba(255,255,255,.02); font-size:13px; color:var(--muted)
}
.search{
  width:100%; padding:12px 12px; border-radius:14px; border:1px solid var(--line);
  background:rgba(0,0,0,.20); color:var(--text);
  outline:none;
}
.search:focus{border-color:rgba(122,162,255,.6)}
.post-list{display:grid; gap:12px}
.post-card{
  display:block; padding:14px 14px; border:1px solid var(--line); border-radius:16px;
  background:rgba(255,255,255,.02);
  text-decoration:none; color:var(--text);
}
.post-card:hover{background:rgba(255,255,255,.04); text-decoration:none}
.post-title{font-weight:850; margin:0 0 6px; font-size:18px; line-height:1.25}
.post-excerpt{margin:0; color:var(--muted)}
.post-meta{margin-top:10px; display:flex; gap:10px; flex-wrap:wrap; color:var(--muted); font-size:13px}
.tag{padding:4px 10px; border:1px solid rgba(122,162,255,.35); border-radius:999px; background:rgba(122,162,255,.08)}
.tag.alt{border-color:rgba(94,234,212,.35); background:rgba(94,234,212,.06)}
.breadcrumbs{font-size:13px; color:var(--muted)}
.breadcrumbs a{color:var(--muted)}
.breadcrumbs a:hover{color:var(--text)}
.toc-title{margin:0 0 8px; font-size:13px; color:var(--muted); letter-spacing:.08em; text-transform:uppercase}
.toc a{
  display:block; padding:8px 10px; border-radius:12px; color:var(--text); border:1px solid transparent;
  text-decoration:none;
}
.toc a:hover{border-color:var(--line); background:rgba(255,255,255,.03)}
details{
  border:1px solid var(--line); border-radius:16px; padding:12px 12px; background:rgba(255,255,255,.02);
  margin:10px 0;
}
summary{cursor:pointer; font-weight:750}
code, pre{font-family:var(--mono)}
pre{
  background:rgba(0,0,0,.25); border:1px solid var(--line);
  border-radius:14px; padding:12px 12px; overflow:auto;
}
.footer{
  margin-top:18px; color:var(--muted); font-size:13px;
  border:1px solid var(--line); border-radius:calc(var(--radius) + 6px);
  background:rgba(17,19,26,.55); padding:14px 16px;
}
.footer a{color:var(--muted)}
.footer a:hover{color:var(--text)}
.cols{display:grid; gap:12px}
@media(min-width:900px){ .cols{grid-template-columns: 1.2fr .8fr} }
.byline{display:flex; align-items:center; gap:12px; margin:14px 0 0}
.avatar{
  width:40px; height:40px; border-radius:14px; background:rgba(255,255,255,.06);
  border:1px solid var(--line); display:grid; place-items:center; font-weight:900;
}
.byline strong{display:block}
.byline .small{color:var(--muted); font-size:13px}
.disclaimer{color:var(--muted); font-size:13px}