@import url("https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wdth,wght@12..96,75..100,400..800&family=Literata:opsz,wght@7..72,400..700&display=swap");
:root{
  --navy:#0d2740;--navy-2:#1d4468;
  --chart:#e4edf0;--sheet:#f6fafb;
  --orange:#ff5b1f;--teal:#0f7378;
  --ink:#14283a;--muted:#4d6274;--line:#b9cad3;
  --max:1040px;--rail:238px;
  --ui:"Bricolage Grotesque",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --read:Literata,Georgia,"Times New Roman",serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;padding-left:var(--rail);background:var(--chart);color:var(--ink);font-family:var(--ui);line-height:1.55}
a{color:inherit}
a:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
img{max-width:100%}
.wrap{width:min(calc(100% - 64px),var(--max));margin-left:auto;margin-right:auto}

/* left rail navigation */
.site-header{position:fixed;left:0;top:0;bottom:0;width:var(--rail);background:var(--navy);color:#fff;z-index:20}
.site-header .wrap{width:auto;margin:0}
.nav{display:flex;flex-direction:column;align-items:flex-start;gap:40px;padding:34px 28px;height:100%}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:1.2rem;line-height:1.1;letter-spacing:-.02em;text-decoration:none;color:#fff}
.brand-mark{flex:none;width:22px;height:22px;border-radius:50%;border:2px solid var(--orange);background:radial-gradient(circle,var(--orange) 0 3px,transparent 4px)}
.navlinks{display:flex;flex-direction:column;gap:14px}
.navlinks a{text-decoration:none;font-size:1rem;font-weight:500;color:#bdd2e0;padding-left:14px;border-left:2px solid #2c5375}
.navlinks a:hover{color:#fff;border-left-color:var(--orange)}

/* headings */
h1,h2,h3{font-family:var(--ui);font-weight:800;font-stretch:78%;line-height:1.02;letter-spacing:-.02em;margin:0;color:var(--navy)}
.kicker{display:inline-block;font-family:var(--ui);font-weight:600;font-size:.95rem;color:var(--teal);margin-bottom:6px}

/* hero */
.hero{padding:76px 0 60px;background:
  repeating-radial-gradient(circle at 92% -8%,transparent 0 30px,rgba(15,115,120,.17) 30px 31px),var(--chart)}
.hero-grid{display:grid;grid-template-columns:1.5fr .7fr;gap:56px;align-items:end;margin-top:14px}
h1{font-size:clamp(3rem,6.6vw,6rem);max-width:980px}
.hero p{font-family:var(--read);font-size:1.15rem;line-height:1.7;max-width:60ch;color:var(--ink);margin:22px 0 0}
.score-card{background:var(--orange);color:var(--navy);padding:26px 28px 28px;clip-path:polygon(0 0,calc(100% - 34px) 0,100% 34px,100% 100%,0 100%)}
.score-card .score{font-size:6.4rem;font-weight:800;font-stretch:78%;line-height:.9;margin:8px 0 10px}
.score-card b{font-size:1.25rem}
.score-card small{display:block;margin-top:8px;font-size:.88rem;line-height:1.45}

.meta-strip{display:grid;grid-template-columns:repeat(4,1fr);background:var(--sheet);border-top:2px solid var(--navy);border-bottom:1px solid var(--line)}
.meta-item{padding:22px 26px;border-left:1px solid var(--line)}
.meta-item:first-child{border-left:0}
.meta-item b{display:block;font-size:2rem;font-weight:800;font-stretch:78%;color:var(--navy);line-height:1.1}
.meta-item span{color:var(--muted);font-size:.9rem}

/* sections */
main>section{padding:72px 0;background:var(--chart)}
main>section:nth-of-type(even){background:var(--sheet)}
main>section.hero,main>section.article-hero{background-color:var(--chart)}
.section-head{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:48px;align-items:end;margin-bottom:34px;border-top:3px solid var(--navy);padding-top:22px}
.section-head h2{font-size:clamp(2.2rem,4vw,3.8rem)}
.section-head p{font-family:var(--read);font-size:.98rem;line-height:1.65;color:var(--muted);margin:0}

/* ranking */
.rank-table{width:100%;border-collapse:collapse;background:transparent}
.rank-table th{font-size:.9rem;font-weight:600;color:var(--muted);text-align:left;padding:10px 16px;border-bottom:2px solid var(--navy)}
.rank-table td{padding:18px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.rank{font-size:2.6rem;font-weight:800;font-stretch:78%;line-height:1;color:var(--teal);width:84px}
.rank-table tr:first-child td{background:var(--navy);color:#fff;border-bottom-color:var(--navy)}
.rank-table tr:first-child .rank{color:var(--orange)}
.pill{display:inline-block;border:1px solid currentColor;border-radius:3px;padding:2px 8px;margin-top:6px;font-size:.82rem;font-weight:600}

/* methodology */
.criteria-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 56px}
.criterion{border-top:1px solid var(--line);padding:22px 0 20px}
.criterion b{font-size:1.08rem;display:block;max-width:80%}
.criterion p{margin:8px 0 0;font-family:var(--read);font-size:.95rem;line-height:1.6;color:var(--muted)}
.weight{float:right;font-size:2.2rem;font-weight:800;font-stretch:78%;line-height:1;color:var(--teal)}

/* reasons as an index list */
.reason-grid{display:block;border-bottom:1px solid var(--line)}
.reason{display:grid;grid-template-columns:70px minmax(0,1fr) minmax(0,1.3fr);gap:8px 36px;align-items:start;border-top:1px solid var(--line);padding:26px 0}
.reason .num{font-size:1.1rem;font-weight:700;color:var(--orange)}
.reason h3{font-size:1.7rem;margin:0}
.reason p{margin:0;font-family:var(--read);font-size:.98rem;line-height:1.65}

/* providers */
.providers{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.provider{background:#fff;border:1px solid var(--line);border-top:5px solid var(--navy);padding:24px}
.provider h3{font-size:1.9rem}
.provider .scoreline{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:10px}
.provider .mini-score{font-weight:800;font-size:1.05rem;background:var(--orange);color:var(--navy);padding:4px 10px;border-radius:3px}
.provider p{font-family:var(--read);font-size:.96rem;line-height:1.65}
.provider ul{padding-left:18px;margin:14px 0 0}
.provider .best{margin-top:18px;padding-top:14px;border-top:1px dashed var(--line);font-size:.93rem}

/* research library as rows */
.article-cards{display:block;border-bottom:2px solid var(--navy)}
.article-card{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px 6px;border-top:1px solid var(--navy);text-decoration:none;color:var(--navy)}
.article-card span{font-size:.9rem;color:var(--muted)}
.article-card h3{font-size:1.7rem;margin-top:4px}
.article-card b{flex:none;color:var(--teal)}
.article-card:hover{background:var(--navy);color:#fff;padding-left:20px;padding-right:20px}
.article-card:hover h3,.article-card:hover span{color:#fff}
.article-card:hover b{color:var(--orange)}

.callout{background:var(--navy);color:#e9f2f7;border-left:10px solid var(--orange);padding:30px 34px;font-family:var(--read);font-size:1.1rem;line-height:1.7}
.callout strong,.callout b{font-family:var(--ui);font-size:1.3rem;color:#fff}

.footer{padding:44px 0 60px;background:var(--navy);color:#e9f2f7}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.footer p,.footer a{color:#a9c2d3}
.footer a:hover{color:#fff}

/* article pages */
.article-hero{padding:68px 0 44px;background:
  repeating-radial-gradient(circle at 96% -20%,transparent 0 26px,rgba(15,115,120,.16) 26px 27px),var(--chart)}
.article-hero h1{font-size:clamp(2.6rem,5.2vw,5rem);max-width:1000px}
.article-hero .deck{font-family:var(--read);font-size:1.2rem;line-height:1.65;max-width:62ch;color:var(--navy-2);margin:20px 0 0}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:24px}
.article-meta span{border-left:3px solid var(--orange);padding-left:10px;font-size:.88rem;font-weight:600;color:var(--navy)}
.article-shell{display:grid;grid-template-columns:220px minmax(0,720px);gap:60px;align-items:start}
.toc{position:sticky;top:28px;border-top:3px solid var(--navy);padding-top:14px}
.toc b{font-size:1.05rem}
.toc a{display:block;text-decoration:none;color:var(--muted);font-size:.9rem;margin:9px 0}
.toc a:hover{color:var(--navy);text-decoration:underline}
.prose{font-family:var(--read);font-size:1.06rem;line-height:1.75}
.prose h2{font-size:2.5rem;margin:58px 0 16px}
.prose>h2:first-child{margin-top:0}
.prose h3{font-size:1.6rem;margin:36px 0 12px}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{padding-left:22px}
.prose table{display:block;overflow-x:auto;width:100%;border-collapse:collapse;margin:26px 0;font-family:var(--ui);font-size:.95rem;line-height:1.5}
.prose th{background:var(--navy);color:#fff;font-weight:600}
.prose th,.prose td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.source-note{background:#dcebee;border-left:5px solid var(--teal);padding:14px 18px;margin:24px 0;font-size:.98rem}
.source-note a{font-weight:700}
.faq details{border-top:1px solid var(--line);padding:18px 0}
.faq summary{font-family:var(--ui);font-weight:700;font-size:1.05rem;cursor:pointer}

@media(max-width:980px){
  body{padding-left:0}
  .site-header{position:sticky;top:0;bottom:auto;width:auto}
  .site-header .wrap{width:min(calc(100% - 36px),var(--max));margin:auto}
  .nav{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;padding:14px 0;height:auto}
  .navlinks{flex-direction:row;flex-wrap:wrap;gap:6px 18px}
  .navlinks a{padding-left:0;border-left:0;font-size:.92rem}
  .wrap{width:min(calc(100% - 36px),var(--max))}
  .hero-grid,.section-head{grid-template-columns:1fr;gap:20px}
  .meta-strip{grid-template-columns:repeat(2,1fr)}
  .meta-item:nth-child(3){border-left:0}
  .meta-item:nth-child(n+3){border-top:1px solid var(--line)}
  .providers,.criteria-grid{grid-template-columns:1fr}
  .reason{grid-template-columns:50px 1fr}
  .reason p{grid-column:2}
  .article-shell{grid-template-columns:1fr;gap:28px}
  .toc{position:relative;top:auto}
}
@media(max-width:640px){
  main>section{padding:52px 0}
  .hero{padding-top:48px}
  .score-card .score{font-size:5rem}
  .meta-strip{grid-template-columns:1fr}
  .meta-item,.meta-item:nth-child(3){border-left:0;border-top:1px solid var(--line)}
  .meta-item:first-child{border-top:0}
  .rank-table{font-size:.9rem}
  .rank-table th:nth-child(4),.rank-table td:nth-child(4){display:none}
  .rank{font-size:2rem;width:52px}
  .article-card{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-grid{grid-template-columns:1fr}
}

/* Retrieval, evidence and trust enhancements */
.answer-box,.evidence-note,.source-panel,.trust-row{border:1px solid rgba(31,41,55,.14);border-radius:14px;background:#fff;padding:16px 18px;margin:18px 0}.answer-box{border-left:4px solid #111827}.answer-box b{display:block;margin-bottom:6px}.evidence-note{background:#f8fafc;font-size:.93rem}.evidence-note a,.source-panel a{font-weight:700}.source-panel ul{margin:10px 0 0;padding-left:20px}.trust-row{display:flex;flex-wrap:wrap;gap:12px;font-size:.88rem;color:#475569}.evidence-badge{display:inline-block;padding:3px 8px;border-radius:999px;background:#eef2ff;font-size:.78rem;font-weight:700;margin-left:6px}.dataset-links{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}.dataset-links a{padding:9px 13px;border:1px solid rgba(31,41,55,.16);border-radius:10px;text-decoration:none;font-weight:700}.source-register table{font-size:.92rem}.source-register td:nth-child(2){word-break:break-word}.provider-source{font-size:.84rem;margin-top:8px;color:#64748b}.provider-source a{font-weight:700}.prose table{width:100%;border-collapse:collapse;margin:20px 0}.prose th,.prose td{padding:11px 12px;border:1px solid rgba(31,41,55,.13);vertical-align:top}.prose th{background:#f8fafc;text-align:left}.last-verified{font-weight:700}.machine-note{font-size:.85rem;color:#64748b}