:root{--ink:#192136;--muted:#535d70;--paper:#f8f7f3;--card:#fff;--line:#d7dbe2;--accent:#4934b8;--pale:#ece8fa;color:var(--ink);background:var(--paper);font:16px/1.6 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0}a{color:var(--accent);text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid #d17700;outline-offset:4px}.wrap{width:min(1120px,calc(100% - 48px));margin-inline:auto}.skip{position:absolute;top:-100px;left:20px;padding:10px 16px;color:white;background:var(--accent);z-index:2}.skip:focus{top:8px}header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:24px;border-bottom:1px solid var(--line)}.brand{display:flex;gap:10px;align-items:center;font-size:1.2rem;font-weight:800;color:var(--ink);text-decoration:none}.mark{background:var(--accent);color:white;display:grid;place-items:center;width:32px;height:32px;border-radius:6px}nav{display:flex;flex-wrap:wrap;gap:22px}nav a{color:var(--ink);font-size:.93rem;text-decoration:none}nav a:hover{text-decoration:underline}.intro{padding-block:36px 24px}.eyebrow,.number{font-size:.75rem;font-weight:750;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}.eyebrow{margin:0 0 10px}h1,h2,p{margin-top:0}h1{font-size:clamp(2.1rem,4.5vw,3.4rem);line-height:1.1;letter-spacing:-.045em;max-width:900px;margin-bottom:18px}h2{font-size:1.7rem;line-height:1.18;letter-spacing:-.03em}.lead{font-size:1.1rem;max-width:720px;color:var(--muted);margin-bottom:0}.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.tool{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:14px;background:var(--card);padding:26px;min-width:0}.tool-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}.badge{color:#715006;background:#fff4d4;border:1px solid #e6cf93;border-radius:5px;font-size:.7rem;padding:3px 8px;white-space:nowrap}.badge.quiet{color:var(--accent);background:var(--pale);border-color:#d5cced}.tool p,.tool li{color:var(--muted)}.tool ul{padding-left:21px;margin:0 0 24px}.tool li{margin-block:3px;font-size:.9rem}.button{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 18px;border:1px solid var(--accent);border-radius:7px;min-height:48px;background:var(--accent);color:#fff;font-weight:700;text-decoration:none}.button.secondary{background:var(--pale);color:var(--accent)}.tool .small{font-size:.78rem;line-height:1.5;margin:12px 0 0}.local-note{font-size:.88rem;color:var(--muted);margin:20px 0 34px;max-width:900px}.local-note strong{color:var(--ink)}.guide-callout,.portfolio-callout{border-top:1px solid var(--line);padding-block:30px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:30px}.guide-callout h2,.portfolio-callout h2{font-size:1.45rem;margin-bottom:10px}.guide-callout p:not(.eyebrow),.portfolio-callout p:not(.eyebrow){max-width:600px;color:var(--muted);margin-bottom:0}.text-link{font-weight:700;max-width:290px}.legacy-fallback{font-size:.8rem;margin-bottom:24px}.prose{max-width:770px;margin:48px auto 70px}.prose h1{font-size:clamp(2.2rem,4.5vw,3.2rem)}.prose h2{font-size:1.45rem;margin:34px 0 12px}.prose p,.prose li{color:var(--muted)}.prose li{margin-bottom:8px}.prose strong{color:var(--ink)}.prose a{overflow-wrap:anywhere}.prose code{background:var(--pale);padding:2px 5px;border-radius:3px;font-size:.9em;overflow-wrap:anywhere}.updated{font-size:.85rem}.article-tool{background:var(--pale);padding:4px 22px 12px;border-radius:9px;margin-top:36px}footer{border-top:1px solid var(--line);padding-block:26px 36px;display:flex;justify-content:space-between;align-items:center;gap:25px;color:var(--muted);font-size:.8rem}footer nav a{font-size:.8rem}h1,h2,.tool>*{overflow-wrap:anywhere}@media(max-width:760px){header{align-items:flex-start;flex-direction:column;gap:18px}.tool-grid{grid-template-columns:1fr}.guide-callout,.portfolio-callout{grid-template-columns:1fr;gap:16px}.text-link{max-width:none}footer{align-items:flex-start;flex-direction:column;gap:16px}.intro{padding-top:28px}.prose{margin-top:30px}.tool-top{flex-wrap:wrap}}@media(max-width:420px){.wrap{width:calc(100% - 32px)}.tool{padding:20px}nav{gap:18px}.tool h2{font-size:1.55rem}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}@media(forced-colors:active){.button,.mark,.badge,.article-tool{border:1px solid ButtonText}}

/* Original guide diagram: exact proportional widths from the bundled synthetic data. */
.walkthrough{border:1px solid var(--line);border-radius:12px;padding:24px;margin:36px 0;background:var(--card)}.walkthrough>h2{margin-top:8px}.demo-totals{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:24px 0}.demo-totals>div{border:1px solid var(--line);border-radius:7px;padding:12px;min-width:0}.demo-totals dt{font-size:.78rem;color:var(--muted)}.demo-totals dd{margin:4px 0 0;font-size:1rem;font-weight:750;overflow-wrap:anywhere}.demo-diagram{margin:24px 0}.demo-diagram figcaption{font-size:.85rem;color:var(--muted);margin-bottom:14px}.bar-label{font-size:.8rem;font-weight:650;margin:10px 0 5px}.size-track{display:grid;height:28px;width:100%;gap:0}.size-track--before{grid-template-columns:1024fr 925fr 858fr 7168fr}.size-track--after{grid-template-columns:8192fr 925fr 858fr}.part-media{background:#4934b8}.part-other{background:#208079}.part-overhead{background:#9da7b9}.part-empty{background:transparent}.diagram-key{display:flex;flex-wrap:wrap;gap:8px 18px;margin:12px 0 0;font-size:.75rem}.diagram-key span{display:flex;gap:6px;align-items:center}.diagram-key i{display:inline-block;width:12px;height:12px;border:1px solid #535d70}.walkthrough-table{overflow-x:auto;border:1px solid var(--line);border-radius:7px;margin:24px 0}.walkthrough-table table{border-collapse:collapse;width:100%;font-size:.82rem}.walkthrough-table caption{text-align:left;padding:12px;background:var(--paper);font-weight:650}.walkthrough-table th,.walkthrough-table td{text-align:right;padding:10px;border-top:1px solid var(--line)}.walkthrough-table th:first-child{text-align:left}.walkthrough-table td{white-space:nowrap}.walkthrough-table code{font-size:.9em}.rename-guide{margin:34px 0}.rename-guide h3{font-size:1.05rem}.rename-example{background:var(--pale);padding:18px 18px 12px 38px;border-radius:8px}.example-label{font-size:.88rem}@media(max-width:540px){.walkthrough{padding:16px}.demo-totals{grid-template-columns:1fr}.demo-totals>div{display:flex;align-items:center;justify-content:space-between;gap:12px}.demo-totals dd{margin:0}.walkthrough-table table{min-width:410px}}@media(forced-colors:active){.size-track span:not(.part-empty){border:1px solid CanvasText}.part-media{background:Highlight}.part-other{background:GrayText}.part-overhead{background:CanvasText}}