.petrodollar-hero[data-astro-cid-loc3kmqf]{background:radial-gradient(circle at 87% 18%, #ebc85d38, transparent 27rem), radial-gradient(circle at 68% 42%, #5b7f6a29, transparent 24rem), var(--paper-light)}.petrodollar-hero[data-astro-cid-loc3kmqf] .eyebrow[data-astro-cid-loc3kmqf]{margin-top:2.2rem}.petrodollar-hero[data-astro-cid-loc3kmqf] h1[data-astro-cid-loc3kmqf]{max-width:76rem}.direct-answer[data-astro-cid-loc3kmqf] p{color:inherit;max-width:72rem;margin-top:.9rem;font-size:1rem;line-height:1.72}.direct-answer[data-astro-cid-loc3kmqf] p:first-child{font-family:var(--font-display);margin-top:0;font-size:clamp(1.15rem,2vw,1.48rem)}.article-cover[data-astro-cid-loc3kmqf]{max-width:68rem;margin:clamp(2rem,5vw,4rem) 0 0}.article-cover[data-astro-cid-loc3kmqf] img[data-astro-cid-loc3kmqf]{border:1px solid var(--line);border-radius:var(--radius-lg);width:100%;height:auto}.article-cover[data-astro-cid-loc3kmqf] figcaption[data-astro-cid-loc3kmqf]{color:var(--muted);max-width:58rem;margin-top:.65rem;font-size:.76rem;line-height:1.55}.reader-note[data-astro-cid-loc3kmqf]{background:var(--gold-light);border-radius:var(--radius-md);color:var(--forest-deep);max-width:52rem;margin-bottom:2rem;padding:1rem 1.15rem;line-height:1.65}.reader-note[data-astro-cid-loc3kmqf] a[data-astro-cid-loc3kmqf]{color:inherit;font-weight:760}.concept-path[data-astro-cid-loc3kmqf]{border-bottom:1px solid var(--line);border-top:1px solid var(--line);grid-template-columns:11rem 1fr;align-items:start;gap:1rem;max-width:52rem;margin:2.5rem 0;padding:1.2rem 0;display:grid}.concept-path[data-astro-cid-loc3kmqf]>span[data-astro-cid-loc3kmqf]{color:var(--terra);letter-spacing:.1em;text-transform:uppercase;font-size:.69rem;font-weight:850}.concept-path[data-astro-cid-loc3kmqf] div[data-astro-cid-loc3kmqf]{flex-wrap:wrap;gap:.45rem 1rem;display:flex}.concept-path[data-astro-cid-loc3kmqf] a[data-astro-cid-loc3kmqf]{font-size:.8rem;font-weight:700}.document-test[data-astro-cid-loc3kmqf]{background:var(--forest-deep);border-radius:var(--radius-xl);color:#fff;margin:3.5rem 0 4rem;padding:clamp(1.25rem,4vw,2.5rem)}.document-test-heading[data-astro-cid-loc3kmqf]{grid-template-columns:minmax(0,1.15fr) minmax(17rem,.65fr);align-items:end;gap:2rem;display:grid}.document-test[data-astro-cid-loc3kmqf] .eyebrow[data-astro-cid-loc3kmqf]{color:var(--gold)}.document-test[data-astro-cid-loc3kmqf] h2[data-astro-cid-loc3kmqf]{color:#fff;border:0;margin-top:.75rem;padding:0;font-size:clamp(2rem,4vw,3.2rem)}.document-test-heading[data-astro-cid-loc3kmqf]>p[data-astro-cid-loc3kmqf]{color:#c9d7d0;margin:0;font-size:.86rem;line-height:1.65}.document-grid[data-astro-cid-loc3kmqf]{grid-template-columns:repeat(2,1fr);gap:.75rem;margin-top:2rem;display:grid}.document-grid[data-astro-cid-loc3kmqf] article[data-astro-cid-loc3kmqf]{border-radius:var(--radius-md);background:#ffffff12;border:1px solid #ffffff24;padding:1rem}.document-grid[data-astro-cid-loc3kmqf] article[data-astro-cid-loc3kmqf]>div[data-astro-cid-loc3kmqf]{grid-template-columns:auto 1fr auto;align-items:center;gap:.75rem;display:grid}.document-grid[data-astro-cid-loc3kmqf] article[data-astro-cid-loc3kmqf]>div[data-astro-cid-loc3kmqf]>span[data-astro-cid-loc3kmqf]{color:var(--sage);font-family:var(--font-mono);font-size:.68rem}.document-grid[data-astro-cid-loc3kmqf] small[data-astro-cid-loc3kmqf]{color:#fff;letter-spacing:.08em;text-transform:uppercase;font-size:.68rem;font-weight:800}.document-grid[data-astro-cid-loc3kmqf] article[data-astro-cid-loc3kmqf]>div[data-astro-cid-loc3kmqf]>strong[data-astro-cid-loc3kmqf]{background:var(--gold);color:var(--forest-deep);text-transform:uppercase;border-radius:999px;padding:.35rem .55rem;font-size:.63rem}.document-grid[data-astro-cid-loc3kmqf] p[data-astro-cid-loc3kmqf]{color:#d8e2dc;margin-top:.85rem;font-size:.8rem;line-height:1.55}.document-grid[data-astro-cid-loc3kmqf] .record[data-astro-cid-loc3kmqf]{border-top:1px solid #ffffff1f;padding-top:.8rem}.document-grid[data-astro-cid-loc3kmqf] p[data-astro-cid-loc3kmqf] b[data-astro-cid-loc3kmqf]{color:#fff}.document-source[data-astro-cid-loc3kmqf]{color:#c9d7d0;margin:1.2rem 0 0;font-size:.75rem}.document-source[data-astro-cid-loc3kmqf] a[data-astro-cid-loc3kmqf]{color:#fff;font-weight:750}.verification-strip[data-astro-cid-loc3kmqf]{background:var(--sage-light);border-radius:var(--radius-xl);grid-template-columns:1.05fr 1fr 1fr;gap:1px;margin:0 0 4rem;display:grid;overflow:hidden}.verification-strip[data-astro-cid-loc3kmqf]>[data-astro-cid-loc3kmqf]{background:var(--sage-light);padding:clamp(1.1rem,3vw,1.8rem)}.verification-strip[data-astro-cid-loc3kmqf]>div[data-astro-cid-loc3kmqf]{background:var(--forest)}.verification-strip[data-astro-cid-loc3kmqf]>div[data-astro-cid-loc3kmqf] .eyebrow[data-astro-cid-loc3kmqf]{color:var(--gold)}.verification-strip[data-astro-cid-loc3kmqf] h2[data-astro-cid-loc3kmqf]{color:#fff;border:0;margin-top:.75rem;padding:0;font-size:clamp(1.7rem,3vw,2.4rem)}.verification-strip[data-astro-cid-loc3kmqf] article[data-astro-cid-loc3kmqf]{border-left:1px solid var(--line-dark);flex-direction:column;display:flex}.verification-strip[data-astro-cid-loc3kmqf] article[data-astro-cid-loc3kmqf]>span[data-astro-cid-loc3kmqf]{color:var(--terra);letter-spacing:.1em;text-transform:uppercase;font-size:.66rem;font-weight:850}.verification-strip[data-astro-cid-loc3kmqf] article[data-astro-cid-loc3kmqf] p[data-astro-cid-loc3kmqf]{margin-top:.9rem;font-size:.84rem;line-height:1.6}.verification-strip[data-astro-cid-loc3kmqf] article[data-astro-cid-loc3kmqf] a[data-astro-cid-loc3kmqf]{margin-top:auto;padding-top:1rem;font-size:.75rem;font-weight:800}.layer-model[data-astro-cid-loc3kmqf]{background:var(--paper-light);border:1px solid var(--line);border-radius:var(--radius-xl);margin:0 0 4rem;padding:clamp(1.25rem,4vw,2.5rem)}.layer-heading[data-astro-cid-loc3kmqf]{grid-template-columns:minmax(0,1.1fr) minmax(16rem,.65fr);align-items:end;gap:2rem;display:grid}.layer-model[data-astro-cid-loc3kmqf] h2[data-astro-cid-loc3kmqf]{border:0;margin-top:.75rem;padding:0;font-size:clamp(2rem,4vw,3.1rem)}.layer-heading[data-astro-cid-loc3kmqf]>p[data-astro-cid-loc3kmqf]{color:var(--muted);margin:0;font-size:.86rem;line-height:1.65}.layer-model[data-astro-cid-loc3kmqf] ol[data-astro-cid-loc3kmqf]{grid-template-columns:repeat(5,1fr);gap:.6rem;margin:2rem 0 0;padding:0;list-style:none;display:grid}.layer-model[data-astro-cid-loc3kmqf] li[data-astro-cid-loc3kmqf]{border:1px solid var(--line);border-radius:var(--radius-md);background:#fff;min-width:0;padding:.9rem;position:relative}.layer-model[data-astro-cid-loc3kmqf] li[data-astro-cid-loc3kmqf]:not(:last-child):after{background:var(--terra);color:#fff;content:"→";z-index:1;border-radius:50%;place-items:center;width:1.35rem;height:1.35rem;font-size:.68rem;display:grid;position:absolute;top:1rem;right:-.98rem}.layer-model[data-astro-cid-loc3kmqf] li[data-astro-cid-loc3kmqf]>span[data-astro-cid-loc3kmqf]{color:var(--terra);font-family:var(--font-mono);font-size:.66rem}.layer-model[data-astro-cid-loc3kmqf] h3[data-astro-cid-loc3kmqf]{font-family:var(--font-sans);letter-spacing:0;margin-top:.65rem;font-size:.88rem}.layer-model[data-astro-cid-loc3kmqf] li[data-astro-cid-loc3kmqf] p[data-astro-cid-loc3kmqf]{color:var(--muted);margin-top:.55rem;font-size:.74rem;line-height:1.5}.layer-model[data-astro-cid-loc3kmqf] li[data-astro-cid-loc3kmqf] small[data-astro-cid-loc3kmqf]{border-top:1px solid var(--line);color:var(--forest);margin-top:.8rem;padding-top:.7rem;font-size:.66rem;font-weight:750;line-height:1.4;display:block}.layer-model[data-astro-cid-loc3kmqf] .layer-example[data-astro-cid-loc3kmqf]{color:var(--ink-soft);margin:1.2rem 0 0;font-size:.82rem;line-height:1.6}.record-timeline[data-astro-cid-loc3kmqf]{border-bottom:1px solid var(--line);border-top:1px solid var(--line);grid-template-columns:minmax(15rem,.62fr) minmax(0,1.38fr);gap:clamp(2rem,5vw,4rem);margin:0 0 4.5rem;padding:2.5rem 0;display:grid}.record-timeline[data-astro-cid-loc3kmqf] h2[data-astro-cid-loc3kmqf]{border:0;margin-top:.75rem;padding:0;font-size:clamp(2rem,4vw,3rem)}.record-timeline[data-astro-cid-loc3kmqf]>div[data-astro-cid-loc3kmqf]>p[data-astro-cid-loc3kmqf]:last-child{color:var(--muted);font-size:.85rem;line-height:1.65}.record-timeline[data-astro-cid-loc3kmqf] ol[data-astro-cid-loc3kmqf]{border-left:1px solid var(--moss);margin:0;padding:0 0 0 1.3rem;list-style:none}.record-timeline[data-astro-cid-loc3kmqf] li[data-astro-cid-loc3kmqf]{border-bottom:1px solid var(--line);grid-template-columns:2rem 5.5rem 1fr;align-items:baseline;gap:.8rem;padding:.85rem 0;display:grid;position:relative}.record-timeline[data-astro-cid-loc3kmqf] li[data-astro-cid-loc3kmqf]:before{background:var(--gold);border:3px solid var(--paper);content:"";border-radius:50%;width:.8rem;height:.8rem;position:absolute;top:1.1rem;left:-1.72rem}.record-timeline[data-astro-cid-loc3kmqf] li[data-astro-cid-loc3kmqf]>span[data-astro-cid-loc3kmqf]{color:var(--line-dark);font-family:var(--font-mono);font-size:.65rem}.record-timeline[data-astro-cid-loc3kmqf] time[data-astro-cid-loc3kmqf]{color:var(--terra);font-family:var(--font-mono);font-size:.7rem;font-weight:750}.record-timeline[data-astro-cid-loc3kmqf] strong[data-astro-cid-loc3kmqf]{color:var(--forest-deep);font-family:var(--font-display);font-size:1rem;line-height:1.4}.research-copy[data-astro-cid-loc3kmqf] h2:first-child{border-top:0;margin-top:0;padding-top:0}.research-copy[data-astro-cid-loc3kmqf] #the-five-monetary-layers-in-an-oil-transaction+p{font-size:1.08rem}.research-copy[data-astro-cid-loc3kmqf] pre{background:var(--forest-deep);border-radius:var(--radius-md);color:#fff;max-width:100%;padding:1rem;overflow-x:auto}.methodology-copy[data-astro-cid-loc3kmqf]{border-top:1px solid var(--line);margin-top:4rem;padding-top:.5rem}.article-faq[data-astro-cid-loc3kmqf]{margin-top:4rem}.article-faq[data-astro-cid-loc3kmqf]>h2[data-astro-cid-loc3kmqf],.evidence-note[data-astro-cid-loc3kmqf] h2[data-astro-cid-loc3kmqf]{border:0;margin-top:.8rem;padding-top:0}.article-faq[data-astro-cid-loc3kmqf]>p[data-astro-cid-loc3kmqf]:not(.eyebrow){max-width:48rem}.article-faq[data-astro-cid-loc3kmqf] .faq-list p{margin:0}.evidence-note[data-astro-cid-loc3kmqf]{background:var(--sage-light);border-radius:var(--radius-lg);max-width:52rem;margin-top:4rem;padding:clamp(1.35rem,4vw,2.4rem)}.evidence-note[data-astro-cid-loc3kmqf] h2[data-astro-cid-loc3kmqf]{font-size:clamp(1.8rem,3.5vw,2.7rem)}.evidence-note[data-astro-cid-loc3kmqf]>p[data-astro-cid-loc3kmqf]{max-width:48rem}.evidence-note[data-astro-cid-loc3kmqf] .review-line[data-astro-cid-loc3kmqf]{border-top:1px solid var(--line-dark);margin-top:1.4rem;padding-top:1.1rem;font-size:.88rem}.cta-actions[data-astro-cid-loc3kmqf]{flex-wrap:wrap;gap:.65rem;margin-top:1.4rem;display:flex}.related-section[data-astro-cid-loc3kmqf]{border-top:1px solid var(--line);margin-top:clamp(4rem,8vw,7rem);padding:clamp(3rem,6vw,5rem) 0 clamp(4rem,8vw,7rem)}.section-heading[data-astro-cid-loc3kmqf]{justify-content:space-between;align-items:end;gap:2rem;display:flex}.section-heading[data-astro-cid-loc3kmqf] h2[data-astro-cid-loc3kmqf]{margin-top:.7rem}.related-grid[data-astro-cid-loc3kmqf]{grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:2rem;display:grid}.related-card[data-astro-cid-loc3kmqf]{background:var(--paper-light);border:1px solid var(--line);border-radius:var(--radius-lg);color:var(--ink);flex-direction:column;min-height:19rem;padding:1.3rem;text-decoration:none;transition:transform .16s,box-shadow .16s;display:flex}.related-card[data-astro-cid-loc3kmqf]:hover{box-shadow:var(--shadow-lg);color:var(--ink);transform:translateY(-3px)}.related-card[data-astro-cid-loc3kmqf]>span[data-astro-cid-loc3kmqf]{color:var(--line-dark);font-family:var(--font-mono);font-size:.7rem}.related-card[data-astro-cid-loc3kmqf] small[data-astro-cid-loc3kmqf]{color:var(--terra);letter-spacing:.1em;text-transform:uppercase;margin-top:auto;font-size:.68rem;font-weight:850}.related-card[data-astro-cid-loc3kmqf] h3[data-astro-cid-loc3kmqf]{margin-top:.65rem;font-size:1.35rem}.related-card[data-astro-cid-loc3kmqf] p[data-astro-cid-loc3kmqf]{color:var(--muted);margin-top:.75rem;font-size:.82rem;line-height:1.55}@media (width<=1080px){.layer-model[data-astro-cid-loc3kmqf] ol[data-astro-cid-loc3kmqf]{grid-template-columns:repeat(3,1fr)}.layer-model[data-astro-cid-loc3kmqf] li[data-astro-cid-loc3kmqf]:after{display:none}.verification-strip[data-astro-cid-loc3kmqf]{grid-template-columns:1fr 1fr}.verification-strip[data-astro-cid-loc3kmqf]>div[data-astro-cid-loc3kmqf]{grid-column:1/-1}.related-grid[data-astro-cid-loc3kmqf]{grid-template-columns:repeat(2,1fr)}}@media (width<=700px){.concept-path[data-astro-cid-loc3kmqf],.document-test-heading[data-astro-cid-loc3kmqf],.layer-heading[data-astro-cid-loc3kmqf],.record-timeline[data-astro-cid-loc3kmqf],.verification-strip[data-astro-cid-loc3kmqf],.document-grid[data-astro-cid-loc3kmqf]{grid-template-columns:1fr}.document-grid[data-astro-cid-loc3kmqf] article[data-astro-cid-loc3kmqf]>div[data-astro-cid-loc3kmqf]{grid-template-columns:auto 1fr;align-items:start}.document-grid[data-astro-cid-loc3kmqf] article[data-astro-cid-loc3kmqf]>div[data-astro-cid-loc3kmqf]>strong[data-astro-cid-loc3kmqf]{grid-column:2;justify-self:start}.layer-model[data-astro-cid-loc3kmqf] ol[data-astro-cid-loc3kmqf]{grid-template-columns:1fr}.verification-strip[data-astro-cid-loc3kmqf]>div[data-astro-cid-loc3kmqf]{grid-column:auto}.verification-strip[data-astro-cid-loc3kmqf] article[data-astro-cid-loc3kmqf]{border-left:0;border-top:1px solid var(--line-dark)}.record-timeline[data-astro-cid-loc3kmqf] li[data-astro-cid-loc3kmqf]{grid-template-columns:1.7rem 4.8rem 1fr}.section-heading[data-astro-cid-loc3kmqf]{flex-direction:column;align-items:flex-start}.related-grid[data-astro-cid-loc3kmqf]{grid-template-columns:1fr}.related-card[data-astro-cid-loc3kmqf]{min-height:15rem}}