:root{
  --bg:#ffffff;--bg-soft:#f5f7fa;--bg-muted:#eef1f5;--line:#dde3ea;
  --ink:#1c2430;--ink-soft:#4a5565;--ink-faint:#6b7685;
  --accent:#1f5fbf;--accent-dark:#174a96;--accent-soft:#e8f0fc;
  --good:#1d7a4f;--warn:#a15c07;
  --radius:12px;--shadow:0 1px 2px rgba(20,30,50,.06),0 4px 16px rgba(20,30,50,.06);
  --header-h:64px;--max:1120px;--read:760px;
}
*{box-sizing:border-box}
html{scroll-padding-top:calc(var(--header-h) + 16px);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
img,svg{max-width:100%;height:auto}
a{color:var(--accent);text-underline-offset:2px}
a:hover{color:var(--accent-dark)}
h1,h2,h3,h4{line-height:1.25;color:var(--ink);font-weight:700}
h1{font-size:clamp(1.7rem,4.2vw,2.5rem);margin:.2em 0 .4em;letter-spacing:-.01em}
h2{font-size:clamp(1.35rem,3vw,1.75rem);margin:2.2em 0 .6em;letter-spacing:-.005em}
h3{font-size:1.2rem;margin:1.6em 0 .5em}
h4{font-size:1.05rem;margin:1.3em 0 .4em}
p,ul,ol{margin:0 0 1.1em}
li{margin:.3em 0}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;z-index:200;background:#fff;padding:8px 12px;border-radius:8px}

/* Sticky header with menu */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);backdrop-filter:saturate(1.4) blur(6px)}
.site-header .bar{position:relative;max-width:var(--max);margin:0 auto;min-height:var(--header-h);display:flex;align-items:center;gap:20px;padding:8px 16px}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;flex:none}
.brand svg{width:34px;height:34px}
.brand-name{font-weight:800;font-size:1.18rem;color:var(--ink);letter-spacing:-.01em}
.hdr-nav{flex:1}
.hdr-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:2px}
.hdr-nav a{display:block;padding:8px 12px;border-radius:8px;color:var(--ink-soft);text-decoration:none;font-weight:600;font-size:.95rem;white-space:nowrap}
.hdr-nav a:hover{background:var(--bg-muted);color:var(--ink)}
.hdr-nav a[aria-current=page]{color:var(--accent);background:var(--accent-soft)}
.hdr-right{display:flex;align-items:center;gap:8px;flex:none;margin-left:auto}
.menu-btn{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;padding:12px 11px;flex-direction:column;justify-content:space-between}
.menu-btn span{display:block;height:2px;background:var(--ink);border-radius:2px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:#fff;font-weight:700;text-decoration:none;border:0;border-radius:10px;padding:12px 20px;line-height:1.2;cursor:pointer;font-size:1rem;min-height:44px;text-align:center}
.btn:hover{background:var(--accent-dark);color:#fff}
.btn:focus-visible{outline:3px solid #9cc0f5;outline-offset:2px}
.btn-ghost{background:#fff;color:var(--accent);border:1.5px solid var(--accent)}
.btn-ghost:hover{background:var(--accent-soft);color:var(--accent-dark)}
.hdr-cta{padding:10px 16px;font-size:.95rem}
@media (max-width:900px){
  .site-header .bar{gap:10px}
  .menu-btn{display:flex}
  .hdr-nav{position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 10px 24px rgba(20,30,50,.08);display:none}
  .hdr-nav.open{display:block}
  .hdr-nav ul{flex-direction:column;padding:8px 12px 12px;gap:2px;max-width:var(--max);margin:0 auto}
  .hdr-nav a{padding:12px}
}
@media (max-width:560px){
  .site-header .bar{padding:6px 10px;gap:6px}
  .brand svg{width:30px;height:30px}
  .brand-name{font-size:1rem}
  .hdr-cta{padding:8px 10px;font-size:.8rem;max-width:44vw;white-space:normal;min-height:40px}
  .menu-btn{width:40px;height:40px;padding:11px 10px}
}
@media (max-width:360px){.brand-name{display:none}}

/* Layout */
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
.read{max-width:var(--read);margin:0 auto}
main{padding-bottom:48px}
.crumbs{font-size:.86rem;color:var(--ink-faint);margin:18px 0 0}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li{margin:0}.crumbs li+li::before{content:"›";margin-right:6px;color:#a0a9b5}
.crumbs a{color:var(--ink-faint)}
.hero{text-align:center;padding-top:28px;padding-bottom:8px}
.hero h1{max-width:900px;margin-left:auto;margin-right:auto}
.lede{font-size:1.1rem;color:var(--ink-soft);max-width:720px;margin:0 auto 1em}
.meta-line{font-size:.88rem;color:var(--ink-faint);margin:.2em 0 1.2em}
.hero-cta{margin:14px 0 6px}
.offer-line{font-weight:600;color:var(--ink-soft);margin:18px 0 10px}

/* Cards / modules */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.soft{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}
.callout{background:var(--accent-soft);border-left:4px solid var(--accent);border-radius:8px;padding:14px 18px;margin:1.4em 0}
.callout p:last-child{margin:0}
.grid{display:grid;gap:16px}
@media(min-width:720px){.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(3,1fr)}}

/* Top picks */
.toppicks{display:grid;gap:16px;margin:24px 0}
@media(min-width:860px){.toppicks{grid-template-columns:repeat(3,1fr)}}
.pick{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 20px 20px;display:flex;flex-direction:column;text-align:left}
.pick.first{border:2px solid var(--accent)}
.rank{display:inline-block;background:var(--ink);color:#fff;font-size:.78rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;border-radius:999px;padding:4px 10px;margin-bottom:10px;align-self:flex-start}
.pick.first .rank{background:var(--accent)}
.pick h3{margin:.1em 0 .3em;font-size:1.18rem}
.pick .award{color:var(--accent);font-weight:700;font-size:.92rem;margin:0 0 .6em}
.pick ul{padding-left:1.1em;font-size:.95rem;color:var(--ink-soft);flex:1}
.pick .price{font-size:.9rem;color:var(--ink-faint);margin:.2em 0 .8em}
.pick .btn{width:100%}

/* Product sections */
.product{border:1px solid var(--line);border-radius:var(--radius);padding:4px 22px 18px;margin:2em 0;background:#fff}
.product h2{margin-top:1em}
.specs{width:100%;border-collapse:collapse;margin:1em 0;font-size:.95rem}
.specs th,.specs td{border-bottom:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
.specs th{width:38%;color:var(--ink-soft);font-weight:600;background:var(--bg-soft)}
.proscons{display:grid;gap:12px;margin:1em 0}
@media(min-width:640px){.proscons{grid-template-columns:1fr 1fr}}
.proscons div{border-radius:10px;padding:12px 16px}
.pros{background:#eef8f2;border:1px solid #cfe9da}.cons{background:#fdf4ea;border:1px solid #f1dcc2}
.proscons h4{margin:.2em 0 .4em}
.proscons ul{margin:0;padding-left:1.1em;font-size:.95rem}

/* Tables */
.table-wrap{overflow-x:auto;margin:1.2em 0;border:1px solid var(--line);border-radius:10px}
table.data{width:100%;border-collapse:collapse;font-size:.93rem;min-width:560px}
table.data th,table.data td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.data thead th{background:var(--bg-muted);font-weight:700;color:var(--ink)}
table.data tbody tr:nth-child(even){background:#fafbfd}
table.data tr.hl{background:var(--accent-soft)!important}

/* Charts */
.chart{margin:1.4em 0;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.chart h3{margin:0 0 .2em;font-size:1.05rem}
.chart .sub{font-size:.86rem;color:var(--ink-faint);margin:0 0 1em}
.bars{display:grid;gap:8px}
.bar-row{display:grid;grid-template-columns:96px 1fr 70px;align-items:center;gap:10px;font-size:.9rem}
.bar-track{background:var(--bg-muted);border-radius:6px;height:22px;overflow:hidden}
.bar-fill{display:block;height:100%;background:var(--accent);border-radius:6px}
.bar-fill.alt{background:#7aa3e0}
.bar-val{text-align:right;font-variant-numeric:tabular-nums;font-weight:600}
@media(max-width:480px){.bar-row{grid-template-columns:78px 1fr 58px;font-size:.84rem}}

/* Layer diagram */
.layers{display:grid;gap:4px;margin:.6em 0}
.layer{border-radius:6px;padding:10px 14px;font-size:.92rem;display:flex;justify-content:space-between;gap:10px}
.layer b{font-weight:700}
.l1{background:#f3f0e8}.l2{background:#ebe6da}.l3{background:#f6e7b8}.l4{background:#d9e4f2;padding:22px 14px}

/* CTA box */
.cta-box{text-align:center;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:26px 20px;margin:2.4em 0}
.cta-box h2{margin-top:0}
.cta-box p{color:var(--ink-soft)}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:10px;padding:0 16px;margin:10px 0;background:#fff}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--accent);font-weight:700}
.faq details[open] summary::after{content:"–"}
.faq details>div{padding:0 0 12px}
.faq h3{display:inline;font-size:1rem;margin:0}

/* Hub cards */
.hub-cards{display:grid;gap:14px;margin:1.2em 0}
@media(min-width:720px){.hub-cards{grid-template-columns:repeat(2,1fr)}}
.hub-card{display:block;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;text-decoration:none;color:var(--ink);background:#fff;box-shadow:var(--shadow)}
.hub-card:hover{border-color:var(--accent)}
.hub-card strong{display:block;font-size:1.08rem;color:var(--accent);margin-bottom:4px}
.hub-card span{color:var(--ink-soft);font-size:.95rem}

/* TOC */
.toc{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:14px 20px;margin:1.4em 0}
.toc strong{display:block;margin-bottom:6px}
.toc ol{margin:0;padding-left:1.2em;font-size:.95rem}

/* Footer */
.site-footer{background:#1d2430;color:#c9d1dc;margin-top:40px;padding:36px 0 28px;font-size:.92rem}
.site-footer a{color:#e6ecf4}
.foot-grid{display:grid;gap:22px}
@media(min-width:720px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr}}
.site-footer h2{color:#fff;font-size:1rem;margin:0 0 .6em}
.site-footer ul{list-style:none;padding:0;margin:0}
.disclosure{border-top:1px solid #34404f;margin-top:24px;padding-top:16px;font-size:.86rem;color:#aeb8c5}

/* Popup */
.ml-popup[hidden]{display:none}
.ml-popup{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:16px}
.ml-popup .scrim{position:absolute;inset:0;background:rgba(15,22,33,.55)}
.ml-popup .dialog{position:relative;background:#fff;border-radius:16px;max-width:440px;width:100%;padding:30px 24px 22px;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.ml-popup h2{margin:.1em 0 .4em;font-size:1.35rem}
.ml-popup p{color:var(--ink-soft);margin:0 0 1.1em}
.ml-popup .actions{display:grid;gap:10px}
.ml-popup .close{position:absolute;top:8px;right:8px;width:40px;height:40px;border:0;background:transparent;font-size:26px;line-height:1;color:var(--ink-faint);cursor:pointer;border-radius:8px}
.ml-popup .close:hover{background:var(--bg-muted)}
.ml-popup .stay{background:transparent;border:0;color:var(--ink-soft);font-weight:600;padding:10px;cursor:pointer;font-size:.95rem;border-radius:8px}
.ml-popup .stay:hover{background:var(--bg-muted)}
body.popup-open{overflow:hidden}
.small{font-size:.88rem;color:var(--ink-faint)}