:root{
  --paper:#f7f8fa; --card:#ffffff; --rule:#e3e7ee; --rule2:#d4dae4;
  --ink:#13182012; /* unused placeholder retained for tooling */
  --text:#1b2230; --soft:#5d6b80; --faint:#8593a6;
  --blue:#1d4ed8; --blue-d:#1739a8; --blue-wash:#eef2fe;
  --up:#0f766e; --down:#b4413a;
  --serif:'Spectral',Georgia,'Times New Roman',serif;
  --sans:'Inter',system-ui,-apple-system,Segoe UI,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:var(--sans);
  font-size:17px;line-height:1.68;-webkit-font-smoothing:antialiased}
.mrs-shell{max-width:1000px;margin:0 auto;padding:0 24px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.22;color:#10151f}
h2{font-size:clamp(1.4rem,2.5vw,1.85rem);margin:0 0 .45em;letter-spacing:-.005em}
h3{font-size:1.12rem;margin:1.5em 0 .4em;font-weight:600}
.mrs-soft{color:var(--soft)}
section{padding:46px 0}
section + section{border-top:1px solid var(--rule)}
.mrs-eyebrow{font-family:var(--sans);font-size:.72rem;font-weight:600;letter-spacing:.18em;
  text-transform:uppercase;color:var(--blue);margin-bottom:14px}
/* masthead */
.mrs-top{position:sticky;top:0;z-index:50;background:rgba(247,248,250,.9);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--rule);display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:14px 24px}
.mrs-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:600;
  font-size:1.04rem;color:#10151f;letter-spacing:-.01em}
.mrs-brand svg{display:block}
.mrs-links{display:flex;gap:22px;list-style:none;margin:0;padding:0;font-size:.9rem}
.mrs-links a{color:var(--soft);font-weight:500}
.mrs-links a:hover{color:var(--text);text-decoration:none}
.mrs-go{border:1px solid var(--blue);color:var(--blue)!important;padding:7px 14px;border-radius:6px;
  font-size:.84rem;font-weight:600}
.mrs-go:hover{background:var(--blue);color:#fff!important;text-decoration:none}
.mrs-burger{display:none;background:none;border:0;cursor:pointer;width:30px;height:24px;padding:0}
.mrs-burger span{display:block;height:2px;width:100%;background:var(--text);margin:5px 0;border-radius:2px}
.mrs-drawer{display:none;flex-direction:column;background:var(--card);border-bottom:1px solid var(--rule);
  padding:6px 24px 16px}
.mrs-drawer a{padding:11px 0;border-bottom:1px solid var(--rule);color:var(--text);font-size:.98rem}
.mrs-drawer.is-open{display:flex}
/* hero + lede */
.mrs-hero{padding:64px 0 44px}
.mrs-hero h1{font-size:clamp(2.05rem,4.6vw,3.05rem);margin:.28em 0 .3em;color:#0d1219}
.mrs-stake{font-size:1.16rem;color:#3a4456;max-width:62ch}
.mrs-page-hd{padding:50px 0 30px}
.mrs-page-hd h1{font-size:clamp(1.85rem,3.6vw,2.5rem);margin:.2em 0 .28em}
.mrs-lede{font-size:1.12rem;color:#3a4456;max-width:66ch}
.mrs-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;font-size:.86rem}
.mrs-chip{background:var(--card);border:1px solid var(--rule2);border-radius:999px;padding:7px 14px;
  color:var(--soft)}
.mrs-chip b{color:var(--blue);font-weight:600}
.mrs-act{display:inline-block;margin-top:28px;background:var(--blue);color:#fff;font-weight:600;
  padding:13px 22px;border-radius:7px;font-size:.96rem}
.mrs-act:hover{background:var(--blue-d);text-decoration:none}
.mrs-read{font-size:1.06rem;color:#2a3344}
/* surfaces */
.mrs-slab{background:var(--card);border:1px solid var(--rule);border-radius:12px;padding:24px 26px;margin:20px 0}
.mrs-slab.is-lead{border-color:#c7d4f7;box-shadow:0 1px 0 rgba(29,78,216,.06),0 0 0 1px rgba(29,78,216,.05) inset}
.mrs-deck{display:grid;gap:18px}
@media(min-width:720px){.mrs-deck.is-3{grid-template-columns:repeat(3,1fr)}.mrs-deck.is-2{grid-template-columns:1fr 1fr}}
.mrs-tile{background:var(--card);border:1px solid var(--rule);border-radius:11px;padding:20px}
.mrs-tile h3{margin-top:0}
.mrs-mini{font-size:.72rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--blue)}
/* lists */
ul.mrs-marks{list-style:none;padding:0;margin:16px 0}
ul.mrs-marks li{padding:11px 0 11px 28px;position:relative;border-bottom:1px solid var(--rule);color:#2a3344}
ul.mrs-marks li:before{content:"";position:absolute;left:4px;top:18px;width:9px;height:9px;border-radius:50%;
  border:2px solid var(--blue)}
/* tables */
.mrs-scroll{overflow-x:auto;margin:20px 0}
table{border-collapse:collapse;width:100%;font-size:.92rem;min-width:520px}
caption{caption-side:top;text-align:left;font-size:.82rem;color:var(--faint);padding-bottom:8px}
th,td{padding:12px 14px;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}
thead th{font-family:var(--sans);font-size:.72rem;font-weight:700;letter-spacing:.07em;
  text-transform:uppercase;color:var(--faint);background:#f0f3f8}
td .mrs-up{color:var(--up);font-weight:600;font-variant-numeric:tabular-nums}
.mrs-bar{color:var(--blue);font-weight:600;font-variant-numeric:tabular-nums}
/* breadcrumb */
.mrs-trail{font-size:.82rem;color:var(--faint);padding:18px 0 0}
.mrs-trail a{color:var(--soft)}
.mrs-trail .div{margin:0 7px;opacity:.6}
/* prose */
.mrs-essay h3{color:#0d1219}
.mrs-essay p{margin:0 0 1.05em}
.mrs-verdict{font-size:1.1rem;color:#2a3344;max-width:66ch;margin:.3em 0 0}
.mrs-aside{font-size:.92rem;color:var(--soft);border-left:3px solid var(--blue);background:var(--blue-wash);
  padding:12px 16px;border-radius:0 8px 8px 0;margin:18px 0}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.86em;background:#eef1f6;
  border:1px solid var(--rule2);border-radius:4px;padding:1px 6px;color:var(--blue-d);word-break:break-word}
/* worked walk-through block (distinct from .mrs-aside) */
.mrs-walk{background:#fbfcfe;border:1px solid var(--rule2);border-top:3px solid var(--blue);
  border-radius:0 0 10px 10px;padding:20px 22px;margin:22px 0}
.mrs-walk .mrs-mini{margin-bottom:10px}
.mrs-walk ol{margin:0;padding-left:20px}
.mrs-walk ol li{padding:7px 0;color:#2a3344}
.mrs-walk ol li b{color:#0d1219}
/* figure / diagram frame */
figure.mrs-fig{margin:26px 0;background:var(--card);border:1px solid var(--rule);border-radius:12px;
  padding:20px 18px 12px}
figure.mrs-fig svg{display:block;width:100%;height:auto;max-width:780px;margin:0 auto}
figure.mrs-fig figcaption{font-size:.82rem;color:var(--soft);text-align:center;margin-top:12px;max-width:62ch;
  margin-left:auto;margin-right:auto}
.mrs-fig .f-frame{fill:#fbfcfe;stroke:var(--rule2)}
.mrs-fig .f-axis{stroke:#b9c2d0;stroke-width:1}
.mrs-fig .f-mean{stroke:var(--blue);stroke-width:1.4;stroke-dasharray:5 4}
.mrs-fig .f-price{stroke:#3a4456;stroke-width:1.8;fill:none}
.mrs-fig .f-band{fill:rgba(29,78,216,.07)}
.mrs-fig .f-h{font-family:'Spectral',serif;font-size:13px;fill:#0d1219;font-weight:600}
.mrs-fig .f-t{font-family:'Inter',sans-serif;font-size:10px;fill:#5d6b80}
.mrs-fig .f-key{font-family:'Inter',sans-serif;font-size:10.5px;fill:#1d4ed8;font-weight:600}
.mrs-fig .f-box{fill:#ffffff;stroke:var(--rule2);stroke-width:1.1}
.mrs-fig .f-edge{stroke:var(--blue);stroke-width:1.5;fill:none}
.mrs-fig .f-yes{fill:#0f766e;font-family:'Inter',sans-serif;font-size:13px;font-weight:700}
.mrs-fig .f-no{fill:#b4413a;font-family:'Inter',sans-serif;font-size:13px;font-weight:700}
.mrs-fig .f-bh{font-family:'Inter',sans-serif;font-size:9.5px;fill:#5d6b80}
/* related */
.mrs-next{margin:34px 0 0;border-top:1px solid var(--rule);padding-top:22px}
.mrs-next .mrs-cap{font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);
  margin-bottom:14px}
.mrs-next .mrs-lanes{display:grid;gap:12px}
@media(min-width:620px){.mrs-next .mrs-lanes{grid-template-columns:1fr 1fr}}
.mrs-next a.mrs-tilelink{display:block;border:1px solid var(--rule);border-radius:9px;padding:14px 16px;background:var(--card);
  color:var(--text)}
.mrs-next a.mrs-tilelink:hover{border-color:#c7d4f7;text-decoration:none}
.mrs-next a.mrs-tilelink b{display:block;color:var(--blue);font-size:.96rem}
.mrs-next a.mrs-tilelink span{color:var(--soft);font-size:.85rem}
/* footer */
.mrs-foot{border-top:1px solid var(--rule);background:#eef1f6;margin-top:36px;padding:42px 0 32px}
.mrs-foot .mrs-colset{display:grid;gap:24px}
@media(min-width:720px){.mrs-foot .mrs-colset{grid-template-columns:2fr 1fr 1fr 1fr}}
.mrs-foot a{color:var(--soft);display:block;padding:3px 0;font-size:.92rem}
.mrs-foot a:hover{color:var(--blue)}
.mrs-foot .ft-hd{color:#10151f;font-weight:600;font-size:.86rem;margin-bottom:10px}
.mrs-fine{color:var(--faint);font-size:.82rem;margin-top:26px;border-top:1px solid var(--rule2);padding-top:18px;
  line-height:1.6}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:3px}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation-duration:.01ms!important;transition-duration:.01ms!important}}
@media(max-width:719px){
  .mrs-links{display:none}.mrs-burger{display:block}
  table{min-width:0}th,td{padding:9px 10px}
}