.guide-library,.guide-heading{padding-block:64px}.guide-library-header{max-width:780px;margin-bottom:48px}.guide-deck{font-size:clamp(1.1rem,2vw,1.35rem);color:var(--muted);max-width:850px;line-height:1.7}.guide-heading h1{max-width:1040px;margin-top:24px;font-size:clamp(2.5rem,5vw,4.5rem)}.guide-byline{display:flex;gap:22px;flex-wrap:wrap;font-size:12px;color:var(--muted)}.guide-cover{margin-block:0 64px}.guide-cover img{width:100%;height:auto;max-height:650px;object-fit:cover;border-radius:14px}.guide-cover figcaption,.guide-diagram figcaption{font-size:12px;color:var(--muted);padding-top:10px}.guide-reading{display:grid;grid-template-columns:230px minmax(0,780px);gap:70px;justify-content:center;padding-bottom:80px}.guide-toc{position:sticky;top:32px;align-self:start;font-size:13px;border-left:2px solid var(--accent);padding-left:20px}.guide-toc nav{display:grid;gap:12px;margin-top:18px}.guide-toc a{color:var(--muted)}.guide-prose{font-size:17px;line-height:1.85;min-width:0}.guide-prose section{margin-bottom:44px}.guide-prose h2{font-size:clamp(1.6rem,3vw,2.1rem);margin-bottom:22px;line-height:1.25}.guide-prose h3{margin-top:28px}.guide-example{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:32px}.guide-equation{background:var(--accent-soft);padding:18px;border-radius:8px;font-family:ui-monospace,monospace;overflow-wrap:anywhere}.guide-example table{width:100%;font-size:15px;border-collapse:collapse;margin:22px 0}.guide-example td,.guide-example th{text-align:left;border-bottom:1px solid var(--border);padding:12px}.guide-diagram{margin:0 0 44px}.guide-diagram img{width:100%;border-radius:12px;background:#f4f5ee}.guide-chart{display:grid;gap:18px;padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:12px}.guide-chart-row{display:grid;grid-template-columns:1fr 1.5fr auto;align-items:center;gap:14px;font-size:14px}.guide-chart meter{width:100%;height:24px;accent-color:var(--accent)}.guide-chart meter::-webkit-meter-optimum-value{background:var(--accent)}.guide-checklist{padding-left:25px}.guide-checklist li{margin-bottom:16px;padding-left:8px}.guide-prose details{border-bottom:1px solid var(--border);padding:18px 0}.guide-prose summary{font-weight:600;cursor:pointer;line-height:1.5}.guide-prose details p{padding-top:18px}.guide-note{border-left:3px solid var(--copper);background:var(--surface-alt);padding:24px;margin-bottom:40px;font-size:14px}.guide-sources{font-size:14px}.guide-sources a{text-decoration:underline;text-underline-offset:3px}.guide-related{display:flex;gap:12px;flex-wrap:wrap}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.guide-card{border:1px solid var(--border);background:var(--surface);border-radius:12px;overflow:hidden;transition:transform .2s}.guide-card:hover{transform:translateY(-3px)}.guide-card img{width:100%;height:230px;object-fit:cover}.guide-card>div{padding:26px}.guide-card h2{font-size:1.4rem;line-height:1.3}.guide-card p{font-size:14px;color:var(--muted)}.guide-card .eyebrow{font-size:10px;margin-bottom:16px}@media(max-width:1000px){.guide-grid{grid-template-columns:repeat(2,1fr)}.guide-reading{grid-template-columns:170px minmax(0,1fr);gap:32px}}@media(max-width:700px){.guide-grid{grid-template-columns:1fr}.guide-reading{display:block}.guide-toc{position:static;margin-bottom:36px}.guide-heading,.guide-library{padding-block:40px}.guide-cover{margin-bottom:36px}.guide-example{padding:22px}.guide-chart-row{grid-template-columns:1fr auto}.guide-chart-row meter{grid-column:1/-1;grid-row:2}.guide-prose{font-size:16px}.guide-card img{height:auto}}