:root{--bg:#f6f7f9;--card:#fff;--ink:#1f2933;--muted:#5b6673;--line:#e3e7ec;--soft:#eef2f7;--accent:#1d4ed8;--accent-d:#1e40af;--accent-soft:#e8eefc;--cta:#f59e0b;--cta-d:#d97706;--cta-ink:#1f1300;--good:#0f766e;--warn:#9a3412;--radius:12px;--hdr:0px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.7 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
img{max-width:100%;height:auto}
a{color:var(--accent)}a:hover{color:var(--accent-d)}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px 12px;z-index:200}.skip:focus{left:8px}
/* header: regular on desktop, sticky on mobile */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:50}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:12px;padding-bottom:12px}
.header-term{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);min-width:0}
.logo-mark{width:34px;height:34px;flex:0 0 auto}
.term-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.term-main{font-weight:800;font-size:1.05rem}
.term-site{font-size:.78rem;color:var(--muted)}
.btn{display:inline-block;text-align:center;text-decoration:none;font-weight:700;border-radius:10px;padding:12px 18px;line-height:1.3;border:0;cursor:pointer;font-size:1rem;font-family:inherit}
.btn-cta{background:var(--cta);color:var(--cta-ink);box-shadow:0 2px 0 var(--cta-d)}
.btn-cta:hover,.btn-cta:focus{background:#fbbf24;color:var(--cta-ink)}
.btn-header{font-size:.92rem;padding:10px 16px;max-width:560px}
.btn-block{display:block;width:100%}
.btn-ghost{background:var(--soft);color:var(--ink);margin-top:10px}
.btn-ghost:hover{background:var(--line)}
.site-nav{background:#fff;border-bottom:1px solid var(--line)}
.site-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 18px}
.site-nav a{display:block;padding:10px 0;text-decoration:none;color:var(--ink);font-weight:600;font-size:.93rem}
.site-nav a:hover,.site-nav a[aria-current]{color:var(--accent)}
.nav-toggle{display:none}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:14px 0 0;margin:0;font-size:.85rem;color:var(--muted)}
.crumbs li+li:before{content:"›";margin-right:6px;color:#9aa5b1}
.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--accent)}
/* layout */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start;padding-top:16px;padding-bottom:48px}
.layout-full{grid-template-columns:minmax(0,1fr)}
.content article{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:36px 44px}
.page-head{text-align:center;margin-bottom:24px}
.page-head h1{font-size:2.15rem;line-height:1.25;margin:4px 0 14px;letter-spacing:-.01em}
.offer-line{font-size:1.1rem;color:var(--muted);margin:0 0 14px}
.hero-cta{margin:0 0 18px}
.byline{font-size:.85rem;color:var(--muted);margin:0}
.prose h2{font-size:1.55rem;line-height:1.3;margin:2.2em 0 .6em;scroll-margin-top:calc(var(--hdr) + 16px)}
.prose h3{font-size:1.2rem;margin:1.6em 0 .5em;scroll-margin-top:calc(var(--hdr) + 16px)}
.prose h4{font-size:1.05rem;margin:1.3em 0 .4em}
.prose p,.prose li{max-width:72ch}
.prose ul,.prose ol{padding-left:1.3em}
.prose blockquote{border-left:4px solid var(--accent);background:var(--accent-soft);margin:1.4em 0;padding:12px 18px;border-radius:0 8px 8px 0}
.toc{background:var(--soft);border-radius:10px;padding:12px 18px;margin:0 0 20px}
.toc summary{font-weight:700;cursor:pointer}
.toc ol{margin:8px 0 0;padding-left:1.2em;font-size:.95rem}
.table-wrap{overflow-x:auto;margin:1.4em 0;border:1px solid var(--line);border-radius:10px}
table{border-collapse:collapse;width:100%;font-size:.95rem;background:#fff}
caption{text-align:left;font-weight:700;padding:12px 14px;background:var(--soft)}
th,td{border-top:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
thead th{background:var(--accent-soft);border-top:0}
table.facts th{width:38%;background:#fafbfc;font-weight:600}
.chart{margin:1.6em 0;padding:18px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe}
.chart figcaption{margin-bottom:12px}.chart figcaption span{display:block;font-size:.85rem;color:var(--muted)}
.bar-row{display:grid;grid-template-columns:minmax(110px,34%) 1fr auto;gap:10px;align-items:center;margin:8px 0;font-size:.92rem}
.bar-track{background:var(--soft);border-radius:6px;height:16px;overflow:hidden}
.bar-fill{display:block;height:100%;background:#94a3b8;border-radius:6px}
.bar-row.hi .bar-fill{background:var(--accent)}.bar-row.hi .bar-label{font-weight:700}
.bar-val{font-weight:700;min-width:64px;text-align:right}
.proscons{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:1.4em 0}
.proscons>div{border:1px solid var(--line);border-radius:10px;padding:14px 18px}
.pros{background:#f0fdfa}.cons{background:#fff7ed}
.pc-title{font-weight:800;margin:0 0 6px}
.pros .pc-title{color:var(--good)}.cons .pc-title{color:var(--warn)}
.proscons ul{margin:0;padding-left:1.1em}.proscons li{margin:4px 0}
.cta-band{background:var(--accent-soft);border:1px solid #c7d6f7;border-radius:12px;padding:20px 22px;margin:1.8em 0;text-align:center}
.cta-band .band-title{font-weight:800;font-size:1.15rem;margin:0 0 6px}
.cta-band p{margin:0 auto 12px}
.steps{counter-reset:s;list-style:none;padding-left:0}
.steps li{counter-increment:s;position:relative;padding-left:44px;margin:12px 0}
.steps li:before{content:counter(s);position:absolute;left:0;top:2px;width:30px;height:30px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:.9rem}
.faq-item{border:1px solid var(--line);border-radius:10px;padding:4px 18px;margin:10px 0;background:#fcfcfd}
.faq-item h3{font-size:1.05rem;margin:.9em 0 .3em}
.final-cta{text-align:center;border-top:1px solid var(--line);margin-top:2.4em;padding-top:1.4em}
.final-cta h2{font-size:1.5rem;margin:.4em 0}
.related,.sources{margin-top:24px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 28px}
.related h2,.sources h2{font-size:1.2rem;margin:0 0 12px}
.sources ul{margin:0;padding-left:1.2em;font-size:.9rem}
.card-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.card-list a{display:block;height:100%;border:1px solid var(--line);border-radius:10px;padding:14px 16px;text-decoration:none;color:var(--ink);background:#fff;transition:border-color .15s}
.card-list a:hover{border-color:var(--accent)}
.rc-title{display:block;font-weight:700;color:var(--accent);margin-bottom:4px;line-height:1.35}
.rc-desc{display:block;font-size:.88rem;color:var(--muted);line-height:1.5}
/* picks (best-of) */
.picks{display:grid;gap:16px;margin:1.6em 0}
.pick{border:1px solid var(--line);border-radius:12px;padding:20px;background:#fff;display:grid;grid-template-columns:auto 1fr;gap:6px 18px;align-items:start}
.pick.top{border:2px solid var(--accent);background:#fbfcff}
.pick-rank{grid-row:span 3;width:46px;height:46px;border-radius:12px;background:var(--accent);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:1.2rem}
.pick-name{font-weight:800;font-size:1.15rem;margin:0}
.stars{color:#f59e0b;letter-spacing:1px}.score{font-size:.9rem;color:var(--muted)}
.pick p{margin:0}.pick .pick-cta{grid-column:2;margin-top:8px}
.btn-sec{background:#fff;color:var(--accent);border:2px solid var(--accent)}
.btn-sec:hover{background:var(--accent-soft)}
/* sidebar: sticky on desktop only */
.sidebar{display:flex;flex-direction:column;gap:20px}
.side-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.side-title{font-weight:800;margin:0 0 8px;font-size:1.05rem}
.side-kicker{text-transform:uppercase;font-size:.72rem;letter-spacing:.08em;color:var(--accent);font-weight:700;margin:0 0 4px}
.side-list ul{list-style:none;padding:0;margin:0}
.side-list li{border-top:1px solid var(--line)}.side-list li:first-child{border-top:0}
.side-list a{display:block;padding:8px 0;text-decoration:none;font-size:.93rem;line-height:1.4}
.side-cta{border:2px solid var(--accent)}
.side-cta p{font-size:.93rem;margin:0 0 12px}
@media (min-width:961px){.side-sticky{position:sticky;top:16px}}
/* footer */
.site-footer{background:#111827;color:#cbd5e1;margin-top:24px;font-size:.92rem}
.site-footer a{color:#e2e8f0;text-decoration:none}.site-footer a:hover{text-decoration:underline}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;padding-top:40px;padding-bottom:24px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;font-size:1.05rem}
.footer-title{font-weight:700;color:#fff;margin:0 0 10px}
.site-footer ul{list-style:none;margin:0;padding:0}.site-footer li{margin:6px 0}
.disclosure{border-top:1px solid #1f2937;padding-top:18px;padding-bottom:28px;font-size:.84rem;color:#94a3b8}
/* home */
.hero{text-align:center;padding:20px 0 4px}
.hero .lead{font-size:1.15rem;color:var(--muted);max-width:60ch;margin:0 auto 18px}
.section-title{text-align:left}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;list-style:none;padding:0}
/* popup */
.pop-overlay{position:fixed;inset:0;background:rgba(15,23,42,.6);z-index:1000;display:flex;align-items:center;justify-content:center;padding:16px}
.pop-overlay[hidden]{display:none}
.pop{background:#fff;border-radius:16px;max-width:440px;width:100%;padding:30px 26px 24px;position:relative;text-align:center;box-shadow:0 20px 50px rgba(0,0,0,.3)}
.pop:focus{outline:none}
.pop-close{position:absolute;top:8px;right:10px;background:none;border:0;font-size:1.8rem;line-height:1;cursor:pointer;color:var(--muted);padding:6px 10px;border-radius:8px}
.pop-close:hover,.pop-close:focus-visible{background:var(--soft);color:var(--ink)}
.pop-kicker{text-transform:uppercase;font-size:.75rem;letter-spacing:.08em;color:var(--accent);font-weight:700;margin:0}
.pop-title{font-size:1.35rem;font-weight:800;margin:6px 0 8px}
body.pop-open{overflow:hidden}
:focus-visible{outline:3px solid #93c5fd;outline-offset:2px}
@media (max-width:960px){
  :root{--hdr:72px}
  .site-header{position:sticky;top:0;box-shadow:0 2px 8px rgba(15,23,42,.06)}
  .layout{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .header-row{padding-top:8px;padding-bottom:8px;gap:10px}
  .logo-mark{width:28px;height:28px}
  .term-main{font-size:.86rem}.term-site{display:none}
  .btn-header{font-size:.74rem;padding:8px 10px;max-width:56%}
  .site-nav .nav-desktop{display:none}
  .site-nav .nav-toggle{display:block}
  .nav-toggle summary{padding:10px 0;font-weight:700;cursor:pointer}
  .site-nav .nav-toggle ul{flex-direction:column;gap:0;padding-bottom:8px}
  .site-nav .nav-toggle a{padding:8px 0}
  .content article{padding:22px 18px}
  .page-head h1{font-size:1.6rem}
  .proscons{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .bar-row{grid-template-columns:1fr auto;grid-template-areas:"l v" "t t"}
  .bar-label{grid-area:l}.bar-val{grid-area:v}.bar-track{grid-area:t}
  .pick{grid-template-columns:1fr}.pick-rank{grid-row:auto}.pick .pick-cta{grid-column:1}
  .related,.sources{padding:20px 18px}
}
.prose .card-list{padding-left:0}.prose .card-list li{max-width:none}.t-home .term-site{display:none}
.btn-cta{display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn-cta.btn-block{display:flex}
.cta-arrow{flex:0 0 auto;transition:transform .15s}
.btn-cta:hover .cta-arrow{transform:translateX(3px)}