@import url("https://fonts.googleapis.com/css2?family=Newsreader:opsz,wght@6..72,400..700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@500;600&display=swap");
:root{
  --ink:#1e1b19;--char:#1e1b19;--paper:#f4f3f0;--white:#fff;
  --oxblood:#8c1c2b;--oxblood-2:#6f1421;--brass:#c9a24d;--brass-soft:#f1e7cf;--rose-soft:#f5e3e1;
  --muted:#6a635c;--line:#ddd7cd;--soft:#ebe8e1;
  --serif:Newsreader,Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --max:1140px;--read:800px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--oxblood);text-underline-offset:3px}
a:hover{color:var(--oxblood-2)}
a:focus-visible,summary:focus-visible{outline:3px solid var(--brass);outline-offset:3px}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);font-weight:600}
.wrap{width:min(var(--max),calc(100% - 48px));margin:auto}

/* navigation */
.nav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.97);border-top:4px solid var(--oxblood);border-bottom:1px solid var(--line)}
.navin{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);font-family:var(--serif);font-size:1.3rem;font-weight:600;letter-spacing:-.01em}
.mark{width:30px;height:30px;display:grid;place-items:center;background:var(--oxblood);color:#fff;font:600 10px/1 var(--mono);letter-spacing:.04em}
.navlinks{display:flex;flex-wrap:wrap;gap:6px 24px}
.navlinks a{color:#4a443e;text-decoration:none;font-size:.88rem;font-weight:500;padding:4px 0;border-bottom:2px solid transparent}
.navlinks a:hover{color:var(--ink);border-bottom-color:var(--oxblood)}

/* labels */
.eyebrow,.kicker,.smallcaps{font:600 .74rem/1.3 var(--mono);letter-spacing:.09em;text-transform:uppercase;color:var(--oxblood)}
.eyebrow{display:inline-block;padding-bottom:8px;border-bottom:2px solid var(--brass)}

/* hero */
.hero{padding:92px 0 72px;color:#efe9de;background:var(--char) repeating-linear-gradient(0deg,transparent 0 39px,rgba(255,255,255,.045) 39px 40px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,.6fr);gap:60px;align-items:end}
.hero .eyebrow{color:var(--brass);border-bottom-color:var(--brass)}
h1{font-size:clamp(2.8rem,6vw,5.4rem);line-height:1.02;letter-spacing:-.03em;margin:26px 0 24px;color:#fbf8f2;max-width:1000px}
.lede{font-size:clamp(1.15rem,1.9vw,1.4rem);line-height:1.55;max-width:760px;color:#d8d0c2}
.chips{display:flex;flex-wrap:wrap;margin:30px 0 0;border-top:1px solid #4a433c}
.chip{padding:14px 26px 0 0;margin-right:26px;font:500 .78rem/1.4 var(--mono);letter-spacing:.03em;color:#e6dfd2}
.scorecard{border-top:4px solid var(--brass);background:rgba(255,255,255,.05);padding:26px 26px 28px;color:#efe9de}
.scorecard .smallcaps{color:var(--brass)}
.score{font-family:var(--serif);font-size:5.4rem;font-weight:500;line-height:1;letter-spacing:-.04em;margin:10px 0 8px;color:var(--brass)}
.scorecard .mini{color:#cfc6b7}
.scorecard a{color:var(--brass)!important;font-weight:600!important;text-underline-offset:4px}
.mini{font-size:.9rem;line-height:1.55;color:var(--muted)}

.strip{background:var(--oxblood);color:#fff;margin:0;padding:0}
.strip .wrap{display:flex;flex-wrap:wrap;font:500 .8rem/1.4 var(--mono);letter-spacing:.03em}
.strip span{padding:16px 28px 16px 0;margin-right:28px;border-right:1px solid rgba(255,255,255,.3)}
.strip span:last-child{border-right:0}

/* homepage research blocks */
.section{padding:70px 0;background:var(--paper)}
.section>.wrap{max-width:var(--read)}
.section h2,.article h2{font-size:clamp(2rem,3.8vw,3rem);line-height:1.08;letter-spacing:-.025em;margin:10px 0 20px}
.section h3,.article h3{font-size:1.65rem;line-height:1.22;letter-spacing:-.012em;margin:40px 0 12px}
.section p{max-width:72ch}
.grid2,.grid3{display:block}
.card{background:transparent;border-top:1px solid var(--ink);padding:24px 0}
.card h3{margin:6px 0 8px}
.toc-section{background:#fff;border-bottom:1px solid var(--line)}
.toc-list{margin:26px 0 0;padding:0;list-style:none;counter-reset:toc;border-top:2px solid var(--ink)}
.toc-list li{counter-increment:toc;display:flex;gap:22px;align-items:baseline;border-bottom:1px solid var(--line);padding:17px 0;font-family:var(--serif);font-size:1.3rem;font-weight:500}
.toc-list li::before{content:"0" counter(toc);font:600 .8rem/1 var(--mono);color:var(--oxblood)}
.toc-list a{color:var(--ink);text-decoration:none}
.toc-list a:hover{color:var(--oxblood)}
.homepage-research{border-top:6px solid var(--ink)}
.homepage-research:nth-of-type(odd){background:#fff}
.homepage-research .article{max-width:var(--read)}
.homepage-research .article>h2:first-of-type{font-size:clamp(2.3rem,5vw,3.8rem);line-height:1.04;margin-top:18px;padding-top:0;border-top:0}
.homepage-research .article h3{font-size:clamp(1.6rem,3vw,2.2rem);border-top:1px solid var(--line);padding-top:12px;margin-top:56px}
.homepage-research .article h4{font-size:1.4rem;line-height:1.25;margin:32px 0 10px}
#ranking .ranktable{margin-top:22px}

/* article pages */
.article-shell{padding:52px 0 88px}
.article-layout{display:block}
.article-layout:has(>.aside){display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:56px;align-items:start}
.article{max-width:var(--read);margin:0 auto;background:transparent}
.article-layout:has(>.aside) .article{margin:0}
.wrap.article{max-width:var(--read)}
.article h1{font-size:clamp(2.5rem,5vw,4.2rem);line-height:1.04;margin:18px 0 20px;max-width:none}
.article .intro{font-size:1.32rem;line-height:1.55;color:#3a3531;margin-bottom:30px}
.article p{font-size:1.06rem;line-height:1.8;color:#2c2825;max-width:74ch}
.article h2{margin-top:60px;padding-top:12px;border-top:1px solid var(--ink)}
.article h2:first-of-type{margin-top:36px}
.article ul,.article ol{font-size:1.06rem;line-height:1.75;padding-left:24px;max-width:74ch}
.article li{margin:6px 0}
.provider-profile{padding:26px 0 12px;border-top:1px solid var(--line)}
.provider-profile:first-of-type{border-top:0}
.provider-profile h4{font-size:1.55rem}
.aside{position:sticky;top:94px}
.toc{border-top:2px solid var(--ink);padding:14px 0}
.toc b{display:block;margin-bottom:8px;font:600 .74rem/1.3 var(--mono);letter-spacing:.09em;text-transform:uppercase;color:var(--oxblood)}
.toc a{display:block;color:var(--muted);font-size:.9rem;text-decoration:none;padding:6px 0 6px 12px;border-left:2px solid var(--line)}
.toc a:hover{color:var(--oxblood);border-left-color:var(--oxblood)}

/* tables */
.ranktable,.datatable{width:100%;border-collapse:collapse;background:#fff;border:0;border-bottom:2px solid var(--ink);font-size:.92rem;line-height:1.5;margin:22px 0 36px;font-variant-numeric:tabular-nums}
.ranktable th,.ranktable td,.datatable th,.datatable td{padding:13px 14px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
.ranktable th,.datatable th{background:var(--char);color:#f4eee2;font:600 .72rem/1.3 var(--mono);letter-spacing:.06em;text-transform:uppercase;border-bottom:0}
.datatable tbody tr:nth-child(even) td{background:#faf9f6}
.ranktable tr:first-child td{background:var(--brass-soft);font-weight:600}
.ranktable tr:first-child td:first-child{box-shadow:inset 4px 0 0 var(--oxblood)}
.rankpill{display:inline-block;min-width:28px;font-family:var(--serif);font-size:1.4rem;font-weight:600;line-height:1;color:var(--oxblood)}

/* callouts */
.callout{background:#fff;border:1px solid var(--line);border-left:5px solid var(--oxblood);padding:22px 26px;margin:30px 0}
.callout p{margin:0}
.callout h3{margin:8px 0 10px;border:0;padding:0}
.callout.cyan{background:var(--char);border-color:var(--char);border-left-color:var(--brass);color:#efe9de}
.callout.cyan h3,.callout.cyan .smallcaps{color:var(--brass)}
.callout.cyan h3{color:#fbf8f2}
.callout.violet{background:var(--brass-soft);border-color:var(--brass-soft);border-left-color:var(--brass)}
.callout.coral{background:var(--rose-soft);border-color:var(--rose-soft)}
.article .callout p{color:inherit}
.quote{border-left:4px solid var(--brass);padding:4px 0 4px 22px;margin:30px 0;font-family:var(--serif);font-size:1.4rem;font-style:italic;line-height:1.5}

/* metrics, misc */
.metric-row{display:grid;grid-template-columns:repeat(4,1fr);margin:28px 0;border-top:2px solid var(--ink);border-bottom:1px solid var(--line);background:#fff}
.metric{padding:20px;border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric strong{display:block;font-family:var(--serif);font-size:2rem;font-weight:600;color:var(--oxblood)}
.article-nav{display:flex;justify-content:space-between;gap:18px;margin-top:52px;padding-top:22px;border-top:1px solid var(--ink)}
.article-nav a{font-weight:600}
.source-list{font-size:.92rem}
.source-list a{word-break:break-word}
.muted{color:var(--muted)}

.footer{background:var(--char);color:#efe9de;padding:56px 0;margin:0;border-top:4px solid var(--oxblood)}
.footer a{color:#e3d9c6;text-underline-offset:4px}
.footer a:hover{color:var(--brass)}
.footer .brand{color:#fff}
.footer .mark{background:var(--brass);color:var(--char)}
.footgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px}

@media(max-width:900px){
  .navin{flex-direction:column;align-items:flex-start;padding:14px 0;gap:8px}
  .nav{position:static}
  .hero{padding:56px 0 48px}
  .hero-grid,.footgrid,.article-layout:has(>.aside){grid-template-columns:1fr;display:block}
  .scorecard{margin-top:32px}
  .aside{position:static;margin-bottom:28px}
  .metric-row{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .footgrid>div+div{margin-top:24px}
  .chip{margin-right:18px}
  .strip span{border-right:0;padding:10px 0;margin-right:22px}
}
@media(max-width:600px){
  .wrap{width:min(var(--max),calc(100% - 28px))}
  .metric-row{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:0}
  .ranktable,.datatable{display:block;overflow-x:auto}
  .score{font-size:4.4rem}
  .section{padding:52px 0}
  .article p,.article ul,.article ol{font-size:1rem}
}

.formula-block{margin:16px 0 22px;padding:18px 20px;border-left:3px solid currentColor;background:rgba(127,127,127,.08);font-size:1.02rem;line-height:1.65;overflow-wrap:anywhere}.article h4{margin-top:30px;margin-bottom:10px;font-size:1.08rem}

.source-note{font-size:.9rem;margin:.55rem 0 1.25rem;color:#52606d}.source-note a{font-weight:800}.evidence-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}.evidence-card{border:1px solid rgba(10,35,55,.18);padding:18px;background:#fff}.meta-strip{display:flex;gap:18px;flex-wrap:wrap;font-size:.92rem;margin-top:18px}.meta-strip strong{font-weight:900}