:root { --navy:#071a2b; --ink:#102330; --teal:#0a8b80; --mint:#e6f5f2; --paper:#f5f8f8; --line:#dbe5e6; --muted:#5f727c; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { max-width: 1180px; margin: 0 auto; padding: 56px min(6vw, 72px) 100px; color: var(--ink); background: #fff; font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 15px; line-height: 1.65; }
body::before { content: "Alpha Traore · CDISC Implementation in R"; display: block; margin: -56px calc(min(6vw, 72px) * -1) 60px; padding: 20px min(6vw, 72px); color: #fff; background: var(--navy); font-size: 12px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.notebook-back { display: inline-flex; margin-bottom: 34px; padding: 9px 13px; border: 1px solid var(--line); border-radius: 9px; color: var(--teal); background: var(--paper); font-size: 11px; font-weight: 750; text-decoration: none; }
.notebook-back:hover { border-color: var(--teal); }
h1 { max-width: 900px; margin: 0 0 35px; font-size: clamp(38px, 5vw, 64px); line-height: 1.05; letter-spacing: -.045em; }
h2 { margin-top: 58px; padding-bottom: 12px; border-bottom: 1px solid var(--line); font-size: 28px; letter-spacing: -.025em; }
h3 { margin-top: 38px; font-size: 21px; }
p { max-width: 900px; }
a { color: var(--teal); }
nav#TOC { float: right; width: 280px; margin: 0 0 35px 40px; padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); }
nav#TOC::before { content: "On this page"; display: block; margin-bottom: 12px; color: var(--teal); font-size: 10px; font-weight: 850; text-transform: uppercase; letter-spacing: .12em; }
nav#TOC ul { margin: 0; padding-left: 18px; }
nav#TOC a { color: var(--muted); text-decoration: none; font-size: 12px; }
pre { overflow-x: auto; padding: 22px; border: 1px solid #1d3949; border-radius: 12px; color: #dbecef; background: #0c2635; font-size: 12px; line-height: 1.55; }
code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; }
p code, li code { padding: 2px 5px; border-radius: 4px; color: #0c665f; background: var(--mint); }
table { display: block; width: 100%; overflow-x: auto; border-collapse: collapse; margin: 25px 0; font-size: 12px; }
th, td { padding: 9px 12px; border: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { background: var(--paper); }
img { max-width: 100%; height: auto; }
blockquote { margin: 25px 0; padding: 18px 22px; border-left: 4px solid var(--teal); background: var(--paper); }
@media (max-width: 760px) { body { padding: 40px 20px 70px; } body::before { margin: -40px -20px 42px; padding: 17px 20px; } nav#TOC { float: none; width: 100%; margin: 0 0 35px; } h1 { font-size: 39px; } }