.round-diamonds{--teal: #3bbba4;--teal-text: #1f7a6a;--teal-text-hover: #17604f;--navy: #383d71;--ink: #333333;--ink-soft: #4a4a5a;--ink-muted: #8a8a96;--cream: #faf9f7;--cream-light: #fdfcfb;--border: #e5e3df;--placeholder: #efeeec;--warning-text: #8a6215;--ease: .3s cubic-bezier(.4, 0, .2, 1);background:var(--cream);color:var(--ink);font-family:var(--font-body, "DM Sans", system-ui, sans-serif);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}.round-diamonds *,.round-diamonds *:before,.round-diamonds *:after{box-sizing:border-box}.round-diamonds img{display:block;max-width:100%;height:auto}.round-diamonds a{color:var(--teal-text);text-decoration:none;transition:color var(--ease)}.round-diamonds a:hover{color:var(--teal-text-hover)}.round-diamonds p a{text-decoration:underline;text-underline-offset:3px;text-decoration-color:#3bbba473}.round-diamonds h2[id]{scroll-margin-top:calc(var(--chrome-sticky-h) + 32px)}@media(prefers-reduced-motion:no-preference){html:has(.round-diamonds){scroll-behavior:smooth}}.round-diamonds .band{padding:80px 40px}.round-diamonds .band--flush{padding:0 40px}.round-diamonds .band--no-bottom{padding-bottom:0}.round-diamonds .band--soft{background:var(--cream-light);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.round-diamonds .band-inner{max-width:1240px;margin:0 auto}.round-diamonds .breadcrumb{display:flex;flex-wrap:wrap;gap:8px;padding:20px 0 0;font-size:12px;color:var(--ink-muted)}.round-diamonds .breadcrumb a{color:var(--ink-muted)}.round-diamonds .breadcrumb a:hover,.round-diamonds .breadcrumb [aria-current=page]{color:var(--navy)}.round-diamonds .intro{max-width:900px;margin:0 auto;padding:56px 40px 64px;text-align:center}.round-diamonds .eyebrow{margin:0 0 20px;color:var(--teal-text);font-size:11px;font-weight:500;letter-spacing:.14em;line-height:1.4;text-transform:uppercase}.round-diamonds .eyebrow--left{margin-bottom:16px;text-align:left}.round-diamonds h1{margin:0 0 24px;color:var(--navy);font-family:var(--font-display, "Playfair Display", Georgia, serif);font-size:52px;font-weight:400;line-height:1.12;text-wrap:balance}.round-diamonds .lead{margin:0;color:var(--ink-soft);font-size:18px;line-height:1.7;text-wrap:pretty}.round-diamonds .lead+.lead{margin-top:14px}.round-diamonds .intro-body{margin:16px 0 0;color:var(--ink);text-wrap:pretty}.round-diamonds .toc-wrap{padding-bottom:64px}.round-diamonds .article-toc{display:flex;flex-wrap:wrap;align-items:center;gap:32px;margin:0;padding:24px 28px;border:1px solid var(--border);border-radius:12px;background:var(--cream-light);font-size:inherit;line-height:inherit;color:inherit}.round-diamonds .article-toc__heading{margin:0;color:var(--ink-muted);font-family:inherit;font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase}.round-diamonds .article-toc__list{display:flex;flex-wrap:wrap;gap:28px;margin:0;padding:0;list-style:none}.round-diamonds .article-toc__list li{margin:0}.round-diamonds .article-toc__list a{color:var(--navy);font-size:14px;text-decoration:none}.round-diamonds .article-toc__list a:hover{color:var(--teal-text-hover)}.round-diamonds .hero-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.round-diamonds .hero-strip img{width:100%;aspect-ratio:526 / 424;object-fit:cover;border-radius:8px;background:var(--placeholder)}.round-diamonds .section-title{margin:0 0 16px;color:var(--navy);font-family:var(--font-display, "Playfair Display", Georgia, serif);font-size:36px;font-weight:400;line-height:1.2;text-align:center}.round-diamonds .section-title--sub{font-size:30px}.round-diamonds .prose{max-width:64ch;margin:0 auto 44px;color:var(--ink);text-align:center;text-wrap:pretty}.round-diamonds .prose--wide{max-width:70ch;margin-bottom:40px}.round-diamonds .prose--tight{margin-bottom:28px}.round-diamonds .prose--airy{line-height:1.9}.round-diamonds .prose+.prose{margin-top:-24px}.round-diamonds .rule-callout{max-width:820px;margin:32px auto 48px;padding:32px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);color:var(--navy);font-family:var(--font-display, "Playfair Display", Georgia, serif);font-size:26px;font-weight:400;line-height:1.35;text-align:center;text-wrap:pretty}.round-diamonds .rule-callout--tight{margin-bottom:24px}.round-diamonds .split{display:grid;gap:64px}.round-diamonds .split--start{grid-template-columns:1fr 1fr;align-items:start}.round-diamonds .split--centre{grid-template-columns:1fr 1fr;align-items:center}.round-diamonds .split--pair{grid-template-columns:1fr 1fr;gap:24px}.round-diamonds .split--ratio{grid-template-columns:.9fr 1.1fr;align-items:center;margin-top:64px;padding-top:56px;border-top:1px solid var(--border)}.round-diamonds .section-title+.split{margin-top:24px}.round-diamonds .spec-row{display:grid;grid-template-columns:110px 1fr;gap:24px;padding:20px 0;border-top:1px solid var(--border)}.round-diamonds .spec-row--last{border-bottom:1px solid var(--border)}.round-diamonds .spec-row__label{padding-top:3px;color:var(--teal-text);font-size:11px;letter-spacing:.1em;line-height:1.4;text-transform:uppercase}.round-diamonds .spec-row__value{margin:0;color:var(--ink);font-size:16px;line-height:1.7}.round-diamonds .spec-row__value--sm{font-size:15px}.round-diamonds .spec-row__figure{margin:0;color:var(--navy);font-family:var(--font-display, "Playfair Display", Georgia, serif);font-size:22px;line-height:1.3}.round-diamonds .spec-note{margin:32px 0 0;color:var(--ink);text-wrap:pretty}.round-diamonds .spec-note--ruled{margin-top:32px;padding-top:32px;border-top:1px solid var(--border)}.round-diamonds .figure-card{margin:0;padding:32px;border:1px solid var(--border);border-radius:12px;background:var(--cream-light)}.round-diamonds .band--soft .figure-card{background:var(--cream)}.round-diamonds .figure-card figcaption{margin-bottom:20px;color:var(--ink-muted);font-size:11px;letter-spacing:.1em;line-height:1.4;text-align:center;text-transform:uppercase}.round-diamonds .figure-card img{width:100%;max-width:420px;margin:0 auto}.round-diamonds .badge-row{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:32px 0 0}.round-diamonds .badge-row--tight{margin:0 0 48px}.round-diamonds .badge-row--left{justify-content:flex-start;margin:24px 0 0}.round-diamonds .badge{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border:1px solid transparent;border-radius:2px;font-size:11px;font-weight:500;letter-spacing:.1em;line-height:1.4;text-transform:uppercase;white-space:nowrap}.round-diamonds .badge--teal{border-color:#3bbba43d;background:#3bbba414;color:var(--teal-text)}.round-diamonds .badge--neutral{border-color:#383d7126;background:#f4f4f5;color:var(--ink-soft)}.round-diamonds .badge--success{border-color:#2fa08b3d;background:#2fa08b1a;color:var(--teal-text)}.round-diamonds .badge--warning{border-color:#c8922e47;background:#c8922e1f;color:var(--warning-text)}.round-diamonds .colour-chart{width:100%;max-width:1100px;margin:0 auto}.round-diamonds .colour-mobile{display:none;gap:13px;width:min(340px,88vw);margin:0 auto}.round-diamonds .example-card{padding:28px;border:1px solid var(--border);border-radius:12px;background:var(--cream-light);transition:border-color var(--ease)}.round-diamonds .band--soft .example-card{background:var(--cream)}.round-diamonds .example-card:hover{border-color:var(--teal)}.round-diamonds .example-card__head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:22px}.round-diamonds .example-card__caption{color:var(--ink-muted);font-size:13px;line-height:1.5}.round-diamonds .example-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.round-diamonds .example-grid img{width:100%;aspect-ratio:1 / 1;object-fit:contain;border-radius:6px;background:var(--placeholder)}.round-diamonds .ratio-title{margin:0 0 16px;color:var(--navy);font-family:var(--font-display, "Playfair Display", Georgia, serif);font-size:30px;font-weight:400;line-height:1.3;text-wrap:pretty}.round-diamonds .ratio-copy{margin:0;color:var(--ink)}.round-diamonds .ratio-image{width:100%;max-width:600px;margin-left:auto}.round-diamonds .shape-tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;max-width:900px;margin:0 auto}.round-diamonds .shape-tile{display:flex;flex-direction:column;align-items:center;gap:12px;padding:24px;border:1px solid var(--border);border-radius:8px;background:var(--cream);color:var(--navy);text-align:center;transition:border-color var(--ease),color var(--ease)}.round-diamonds .band--soft .shape-tile{background:var(--cream)}.round-diamonds .shape-tile:hover{border-color:var(--teal);color:var(--navy)}.round-diamonds .shape-tile img{width:40px;height:40px;object-fit:contain}.round-diamonds .shape-tile span{font-size:13px;line-height:1.4}.round-diamonds .article-tail{display:grid;gap:20px;max-width:980px;margin:0 auto;padding:80px 40px}.round-diamonds .article-tail>section{margin-top:0}.round-diamonds .article-tail>section>h2{margin:0 0 24px;color:var(--navy);font-family:var(--font-display, "Playfair Display", Georgia, serif);font-size:36px;font-weight:400;line-height:1.2}.round-diamonds .article-tail>section>ul{display:grid;gap:12px;margin:0;padding:0;list-style:none}.round-diamonds .article-tail details{border:1px solid var(--border);border-radius:8px;background:var(--cream-light)}.round-diamonds .article-tail summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;color:var(--navy);font-size:16px;font-weight:500;line-height:1.5;list-style:none;cursor:pointer;transition:color var(--ease)}.round-diamonds .article-tail summary::-webkit-details-marker{display:none}.round-diamonds .article-tail summary:after{content:"";flex-shrink:0;width:8px;height:8px;border-right:1.5px solid var(--ink-muted);border-bottom:1.5px solid var(--ink-muted);transform:rotate(45deg);transition:transform var(--ease)}.round-diamonds .article-tail details[open] summary:after{transform:rotate(-135deg)}.round-diamonds .article-tail summary:hover{color:var(--teal-text-hover)}.round-diamonds .article-tail details>div{padding:0 20px 18px;color:var(--ink);font-size:16px;line-height:1.75;text-wrap:pretty}.round-diamonds .related-articles,.round-diamonds .author-bio-box{margin:0;padding:28px 32px;border:1px solid var(--border);border-radius:12px;background:var(--cream-light);font-size:inherit;line-height:inherit;color:inherit}.round-diamonds .related-articles__heading,.round-diamonds .author-bio-box__heading{margin:0 0 18px;color:var(--ink-muted);font-family:inherit;font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase}.round-diamonds .related-articles__list{display:flex;flex-wrap:wrap;gap:28px;margin:0;padding:0;list-style:none}.round-diamonds .related-articles__list li{margin:0}.round-diamonds .related-articles__list a{color:var(--navy);font-size:14px;text-decoration:none}.round-diamonds .related-articles__list a:hover{color:var(--teal-text-hover)}.round-diamonds .author-bio-box__heading{margin-bottom:16px}.round-diamonds .author-bio-box__name{margin:0 0 10px;color:var(--ink);font-size:16px;line-height:1.7}.round-diamonds .author-bio-box__name strong{color:var(--navy);font-weight:500}.round-diamonds .author-bio-box__tagline{margin:0 0 18px;color:var(--ink-soft);font-size:14px;line-height:1.7}.round-diamonds .author-bio-box__byline{margin:0;padding-top:16px;border-top:1px solid var(--border);color:var(--ink-muted);font-size:13px;line-height:1.6}.round-diamonds .round-diamonds__narrow{max-width:900px;margin:0 auto;padding:56px 40px 64px;text-align:center}.round-diamonds .ruled-block{margin-top:64px;padding-top:64px;border-top:1px solid var(--border)}.round-diamonds .spec-row{padding:18px 0;gap:20px}.round-diamonds .plot-pair{display:grid;grid-template-columns:.8fr 1.2fr;align-items:center;gap:16px}.round-diamonds .plot-pair img{width:100%;border-radius:6px;background:var(--placeholder)}@media(max-width:900px){.round-diamonds .round-diamonds__narrow{padding-left:20px;padding-right:20px}.round-diamonds .ruled-block{margin-top:48px;padding-top:48px}.round-diamonds .plot-pair{grid-template-columns:1fr;gap:18px}}@media(max-width:900px){.round-diamonds .band,.round-diamonds .band--flush,.round-diamonds .intro,.round-diamonds .article-tail{padding-left:20px;padding-right:20px}.round-diamonds h1{font-size:32px}.round-diamonds .section-title,.round-diamonds .article-tail>section>h2{font-size:26px}.round-diamonds .section-title--sub{font-size:24px}.round-diamonds .lead{font-size:16px}.round-diamonds .rule-callout{margin:24px auto 32px;padding:24px 0;font-size:20px}.round-diamonds .ratio-title{font-size:24px}.round-diamonds .hero-strip{grid-template-columns:1fr}.round-diamonds .split--start,.round-diamonds .split--centre,.round-diamonds .split--pair,.round-diamonds .split--ratio{grid-template-columns:1fr;gap:32px}.round-diamonds .example-grid,.round-diamonds .shape-tiles{grid-template-columns:1fr 1fr}.round-diamonds .spec-row{grid-template-columns:1fr;gap:6px}.round-diamonds .spec-row__label{padding-top:0}.round-diamonds .article-toc{gap:16px;padding:20px}.round-diamonds .ratio-image{margin-left:0}}@media(max-width:600px){.round-diamonds .example-grid,.round-diamonds .shape-tiles{grid-template-columns:1fr}}