:root{
  --ink:#1b1f2a;--ink-soft:#4a5160;--muted:#6b7280;
  --bg:#ffffff;--paper:#f6f7f9;--line:#e3e6eb;
  --accent:#4b3bc4;--accent-dark:#3a2d9c;--accent-soft:#efedfc;
  --stamp:#eef9d6;--stamp-ink:#3d5a0e;
  --radius:12px;--header-h:64px;
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans",-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-padding-top:calc(var(--header-h) + 16px);-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);font-size:17px;line-height:1.7;color:var(--ink);background:var(--bg)}
body.modal-open{overflow:hidden}
img{max-width:100%;height:auto}
a{color:var(--accent)}
a:hover{color:var(--accent-dark)}
h1,h2,h3,h4{font-family:var(--serif);line-height:1.25;color:var(--ink);font-weight:650}
h1{font-size:clamp(1.9rem,4.5vw,2.8rem);margin:.2em 0 .4em}
h2{font-size:clamp(1.4rem,3vw,1.85rem);margin:2em 0 .6em}
h3{font-size:1.2rem;margin:1.6em 0 .5em}
p,ul,ol{margin:0 0 1.1em}
li{margin-bottom:.35em}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:8px 14px;z-index:200}
.skip:focus{left:8px;top:8px}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.narrow{max-width:780px;margin:0 auto}

/* Header (sticky on all sizes) */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:saturate(1.4) blur(6px)}
.header-row{display:flex;align-items:center;gap:16px;min-height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);min-width:0}
.brand img{width:30px;height:30px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-keyword{font-family:var(--serif);font-weight:700;font-size:1.05rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-name{font-size:.72rem;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
.main-nav{margin-left:auto}
.main-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px}
.main-nav a{display:block;padding:8px 12px;border-radius:8px;text-decoration:none;color:var(--ink-soft);font-weight:500;font-size:.95rem}
.main-nav a:hover,.main-nav a[aria-current=page]{background:var(--accent-soft);color:var(--accent-dark)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:#fff;text-decoration:none;font-weight:600;padding:12px 22px;border-radius:999px;border:0;font-size:1rem;line-height:1.2;cursor:pointer;font-family:var(--sans);text-align:center}
.btn:hover{background:var(--accent-dark);color:#fff}
.btn:focus-visible,.menu-toggle:focus-visible,.btn-ghost:focus-visible,.popup-close:focus-visible{outline:3px solid #9f93f0;outline-offset:2px}
.header-cta{padding:10px 18px;font-size:.92rem;white-space:nowrap;flex:none}
.menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;width:42px;height:42px;cursor:pointer;flex:none;color:var(--ink)}
.menu-toggle svg{width:22px;height:22px}
@media (max-width:900px){
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center}
  .main-nav{position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);display:none;margin:0}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;padding:8px 16px 14px}
  .header-cta{margin-left:auto}
}
@media (max-width:480px){
  .brand-name{display:none}
  .header-row{gap:10px}
  .header-cta{padding:9px 13px;font-size:.84rem}
  .brand img{width:26px;height:26px}
  .brand-keyword{font-size:.95rem}
}

/* Breadcrumbs */
.crumbs{font-size:.88rem;color:var(--muted);padding:18px 0 0}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li{margin:0}
.crumbs li+li::before{content:"›";margin-right:6px;color:#b0b5bf}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{text-decoration:underline}

/* Hero */
.hero{text-align:center;padding:28px 0 8px}
.hero .lead{font-size:1.1rem;color:var(--ink-soft);max-width:680px;margin:0 auto 1em}
.offer-line{font-size:1.08rem;color:var(--ink-soft);margin-bottom:18px}
.stamp{display:inline-block;background:var(--stamp);color:var(--stamp-ink);font-size:.82rem;font-weight:600;padding:4px 12px;border-radius:999px;margin-bottom:10px}

/* Article */
.article{padding-bottom:30px}
.article .toc{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin:24px 0}
.article .toc strong{font-family:var(--serif)}
.article .toc ol{margin:.5em 0 0;padding-left:1.2em}
.table-wrap{overflow-x:auto;margin:0 0 1.4em;border:1px solid var(--line);border-radius:var(--radius)}
table{border-collapse:collapse;width:100%;font-size:.95rem;min-width:520px}
th,td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--paper);font-weight:600}
tr:last-child td{border-bottom:0}
caption{caption-side:bottom;text-align:left;font-size:.82rem;color:var(--muted);padding:8px 14px}
.callout{background:var(--accent-soft);border-left:4px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0;padding:14px 18px;margin:0 0 1.4em}
.callout p:last-child{margin:0}
.note{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;margin:0 0 1.4em;font-size:.95rem}
.note p:last-child{margin:0}
.proscons{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:0 0 1.4em}
.proscons>div{border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.proscons h3{margin-top:0}
.proscons ul{margin:0;padding-left:1.2em}
@media (max-width:640px){.proscons{grid-template-columns:1fr}}

/* Bar charts */
.chart{border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin:0 0 1.4em}
.chart-title{font-weight:600;margin-bottom:12px;font-family:var(--serif)}
.bar-row{display:grid;grid-template-columns:150px 1fr;gap:12px;align-items:center;margin-bottom:10px;font-size:.92rem}
.bar-track{background:var(--paper);border-radius:6px;height:28px;position:relative}
.bar{background:var(--accent);height:100%;border-radius:6px;display:flex;align-items:center;justify-content:flex-end;padding-right:8px;color:#fff;font-weight:600;font-size:.85rem;min-width:52px}
.bar.alt{background:#a8a2d8}
.chart-note{font-size:.8rem;color:var(--muted);margin:6px 0 0}
@media (max-width:520px){.bar-row{grid-template-columns:1fr;gap:4px}}

/* Product boxes */
.picks{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:8px 0 1.6em}
.pick{border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;background:#fff}
.pick.top{border:2px solid var(--accent)}
.pick .rank{font-size:.8rem;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.05em}
.pick h3{margin:.3em 0 .2em}
.pick .best-for{font-size:.92rem;color:var(--ink-soft)}
.pick .price{font-weight:700;margin:.4em 0 .8em}
.pick .btn,.pick .text-link{margin-top:auto}
@media (max-width:860px){.picks{grid-template-columns:1fr}}

/* CTA box */
.cta-box{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:28px 22px;text-align:center;margin:36px 0}
.cta-box h2{margin-top:0}
.cta-box p{color:var(--ink-soft);max-width:600px;margin:0 auto 18px}
.inline-cta{text-align:center;margin:8px 0 1.6em}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:var(--radius);padding:12px 18px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600;font-family:var(--serif);font-size:1.05rem}
.faq details p{margin:.7em 0 0}

/* Related */
.related{margin:30px 0 10px}
.related ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.related a{display:block;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;text-decoration:none;color:var(--ink);font-weight:600;height:100%}
.related a:hover{border-color:var(--accent);color:var(--accent-dark)}
.related span{display:block;font-weight:400;font-size:.88rem;color:var(--muted);margin-top:4px}

/* Home cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin:0 0 1.6em}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-decoration:none;color:var(--ink);background:#fff;display:block}
.card:hover{border-color:var(--accent)}
.card h3{margin:0 0 .3em}
.card p{margin:0;color:var(--ink-soft);font-size:.95rem}

/* Footer */
.site-footer{background:var(--ink);color:#c9ccd3;margin-top:50px;padding:40px 0 30px;font-size:.92rem}
.site-footer a{color:#fff;text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px}
.footer-grid h2{font-size:1rem;color:#fff;margin:0 0 .6em}
.footer-grid ul{list-style:none;padding:0;margin:0}
.footer-brand{font-family:var(--serif);color:#fff;font-size:1.15rem;font-weight:700}
.disclosure{border-top:1px solid #353a48;margin-top:28px;padding-top:18px;font-size:.85rem;color:#a9adb7}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}}

/* Popup */
.popup-overlay{position:fixed;inset:0;background:rgba(17,19,28,.55);z-index:300;display:none;align-items:center;justify-content:center;padding:16px}
.popup-overlay.show{display:flex}
.popup{background:#fff;border-radius:16px;max-width:440px;width:100%;padding:30px 24px 24px;position:relative;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.popup h2{margin:0 0 .4em;font-size:1.45rem}
.popup p{color:var(--ink-soft);margin-bottom:20px}
.popup .actions{display:flex;flex-direction:column;gap:10px}
.btn-ghost{background:none;border:1px solid var(--line);color:var(--ink-soft);padding:11px 20px;border-radius:999px;font-weight:600;cursor:pointer;font-size:.95rem;font-family:var(--sans)}
.btn-ghost:hover{background:var(--paper)}
.popup-close{position:absolute;top:10px;right:10px;width:38px;height:38px;border:0;background:none;border-radius:8px;cursor:pointer;font-size:1.5rem;line-height:1;color:var(--muted)}
.popup-close:hover{background:var(--paper)}
.popup:focus{outline:none}