*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a0a;--bg2:#111;--bg3:#181818;
  --accent:#584299;
  --text:#ffffff;--muted:#aaa;--border:#222;
  --mono:ui-monospace,'Cascadia Code','Fira Code',monospace;
  --sans:system-ui,-apple-system,'Segoe UI',sans-serif;
}
html{scroll-behavior:smooth;scrollbar-width:none;-ms-overflow-style:none}
html::-webkit-scrollbar{display:none}
body{background:var(--bg);color:var(--text);font-family:var(--sans);overflow-x:hidden;line-height:1.6;font-size:15px}

a{color:inherit}
code{font-family:var(--mono);font-size:.92em;color:var(--accent);background:rgba(88,66,153,.07);padding:1px 6px;border-radius:3px}

.top{padding:32px 40px 0;max-width:1180px;margin:0 auto}
.back{
  display:inline-block;font-size:11px;letter-spacing:.15em;text-transform:uppercase;
  color:var(--muted);text-decoration:none;transition:color .2s;
}
.back:hover{color:var(--accent)}

.head{
  max-width:1180px;margin:0 auto;padding:48px 40px 40px;
  display:grid;grid-template-columns:1fr 340px;gap:64px;align-items:start;
}
.head-title{
  font-family:var(--sans);font-size:clamp(36px,5vw,58px);font-weight:800;
  line-height:1.02;letter-spacing:-.02em;color:#fff;margin-bottom:20px;
}
.head-title span.g{color:var(--accent)}
.head-tag{font-size:15px;color:var(--muted);line-height:1.6;max-width:560px}
.head-tag code{font-size:14px}

.meta{
  border:1px solid var(--accent);border-radius:6px;padding:22px 24px;
  background:rgba(88,66,153,.04);
  display:flex;flex-direction:column;gap:20px;
}
.meta-label{font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:6px;font-weight:700}
.meta-value{font-size:14px;color:var(--text)}
.meta-links{display:flex;flex-direction:column;gap:6px}
.meta-links a{
  font-size:13px;color:var(--text);text-decoration:none;
  transition:color .2s;
}
.meta-links a:hover{color:var(--accent)}

.body{
  max-width:1180px;margin:0 auto;padding:24px 40px 120px;
  display:grid;grid-template-columns:180px 1fr;gap:56px;align-items:start;
}
.toc{position:sticky;top:32px}
.toc-label{
  font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);
  margin-bottom:16px;font-weight:700;
}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.toc-list a{
  font-size:12px;color:var(--muted);text-decoration:none;
  border-left:1px solid var(--border);padding:2px 12px;
  transition:all .2s;
}
.toc-list a:hover{color:var(--accent);border-left-color:var(--accent)}
.toc-list a.active{color:var(--accent);border-left-color:var(--accent)}

.sections{display:flex;flex-direction:column}
.sec{padding:28px 0;border-top:1px solid var(--border)}
.sec:first-child{border-top:1px solid var(--border)}
.sec-label{
  font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);
  margin-bottom:16px;font-weight:700;
}
.sec-body p{color:var(--text);font-size:14px;line-height:1.75;margin-bottom:14px;max-width:720px}
.sec-body p:last-child{margin-bottom:0}
.sec-body ul{list-style:none;display:flex;flex-direction:column;gap:8px;max-width:720px}
.sec-body ul li{
  color:var(--text);font-size:14px;line-height:1.6;padding-left:18px;position:relative;
}
.sec-body ul li::before{content:'·';color:var(--accent);position:absolute;left:6px;font-weight:700}

.stack-grid{display:flex;flex-wrap:wrap;gap:8px;max-width:720px}
.stack-tag{
  font-size:11px;padding:5px 12px;border-radius:3px;background:var(--bg3);
  border:1px solid var(--border);color:var(--muted);letter-spacing:.04em;
}
.stack-tag.coursework{
  background:rgba(88,66,153,.12);border-color:var(--accent);color:var(--accent);
  font-weight:600;box-shadow:0 0 8px rgba(88,66,153,.45),0 0 18px rgba(88,66,153,.2);
}

footer{
  border-top:1px solid var(--border);padding:24px 40px;
  max-width:1180px;margin:0 auto;
  display:flex;justify-content:space-between;align-items:center;
  font-size:10px;color:var(--muted);flex-wrap:wrap;gap:8px;
}

@media(max-width:900px){
  .head{grid-template-columns:1fr;gap:32px;padding:32px 24px 24px}
  .body{grid-template-columns:1fr;gap:32px;padding:16px 24px 80px}
  .top{padding:24px 24px 0}
  .toc{position:static}
  .meta{padding:18px 20px}
  footer{padding:20px 24px}
}