:root{--bg:#ffffff;--gray:#f3f5f8;--gray2:#e5e9ef;--line:#d9dee6;--text:#1f2933;--muted:#5b6673;--accent:#2563eb;--accent-d:#1d4ed8;--hdr:60px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hdr) + 16px)}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;-webkit-text-size-adjust:100%}
h1,h2,h3,h4{line-height:1.25;color:#111827;scroll-margin-top:calc(var(--hdr) + 16px)}
a{color:var(--accent-d);text-underline-offset:2px}
a:hover{color:#1e3a8a}
.wrap{max-width:900px;margin:0 auto;padding:0 16px}
.site-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:12px;height:var(--hdr);padding:0 16px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 4px rgba(15,23,42,.05)}
.hk{display:flex;align-items:center;gap:10px;min-width:0;text-decoration:none;color:#111827;font-weight:700;font-size:1.02rem}
.hk-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brandmark{flex:none}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border-radius:8px;font-weight:700;font-size:.95rem;line-height:1.2;text-decoration:none;text-align:center;border:2px solid transparent;cursor:pointer;font-family:inherit}
.btn.cta{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn.cta:hover{background:var(--accent-d);border-color:var(--accent-d);color:#fff}
.btn.ghost{background:#fff;color:var(--accent-d);border-color:var(--accent)}
.btn.ghost:hover{background:var(--gray)}
.hdr-cta{flex:none;padding:8px 14px;font-size:.88rem}
.site-nav{background:var(--gray);border-bottom:1px solid var(--line)}
.site-nav ul{max-width:900px;margin:0 auto;padding:0 8px;list-style:none;display:flex;gap:2px;overflow-x:auto}
.site-nav a{display:block;padding:11px 12px;color:#374151;text-decoration:none;font-weight:600;font-size:.93rem;white-space:nowrap}
.site-nav a:hover{color:var(--accent-d)}
.crumbs{padding-top:14px}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px;font-size:.85rem;color:var(--muted)}
.crumbs li+li::before{content:"\203A";margin-right:4px;color:#9aa5b1}
.crumbs a{color:var(--muted)}
.article{padding-top:12px;padding-bottom:24px}
.h1{text-align:center;font-size:clamp(1.65rem,5.2vw,2.35rem);margin:.6em 0 .4em}
.hero{background:var(--gray);border-bottom:1px solid var(--line);padding:30px 0 34px;text-align:center}
.hero .h1{margin-top:.2em}
.hero-cta{text-align:center;margin:8px 0 28px}
.lede-cta{margin:0 0 14px;color:var(--muted);font-size:1.05rem;text-align:center}
.prose{max-width:760px;margin:0 auto}
.prose h2{font-size:1.5rem;margin:1.9em 0 .5em;padding-top:.3em;border-top:1px solid var(--gray2)}
.prose h3{font-size:1.15rem;margin:1.5em 0 .3em}
.prose h4{font-size:1rem;margin:1.2em 0 .2em}
.prose p,.prose ul,.prose ol{margin:.8em 0}
.prose li{margin:.3em 0}
.prose code{background:var(--gray);padding:1px 5px;border-radius:4px;font-size:.92em}
.table-wrap{overflow-x:auto;margin:1.2em 0;border:1px solid var(--line);border-radius:8px}
table{border-collapse:collapse;width:100%;min-width:480px;font-size:.93rem}
th,td{padding:10px 12px;text-align:left;vertical-align:top;border-bottom:1px solid var(--gray2)}
thead th{background:var(--gray);font-weight:700;border-bottom:1px solid var(--line)}
tbody tr:last-child td{border-bottom:0}
tbody tr:nth-child(even){background:#fafbfc}
.callout{margin:1.3em 0;padding:14px 16px;background:#eff5ff;border-left:4px solid var(--accent);border-radius:4px;color:#1e293b}
.cta-box,.end-cta{margin:2em auto;padding:22px 18px;background:var(--gray);border:1px solid var(--line);border-radius:12px;text-align:center;max-width:760px}
.cta-box-text{margin:0 0 12px;font-weight:600}
.end-cta h2{margin:.1em 0 .3em;border:0;padding:0}
.end-cta p{margin:.2em 0 14px;color:var(--muted)}
.bars{margin:1.4em 0;padding:16px;border:1px solid var(--line);border-radius:10px;background:#fff}
.bars figcaption{font-weight:700;margin-bottom:10px}
.bar-row{display:grid;grid-template-columns:90px 1fr 32px;gap:10px;align-items:center;margin:8px 0;font-size:.92rem}
.bar-track{display:block;height:14px;background:var(--gray2);border-radius:8px;overflow:hidden}
.bar-fill{display:block;height:100%;background:var(--accent);border-radius:8px}
.bar-val{text-align:right;font-weight:700}
.top3{list-style:none;margin:10px auto 8px;padding:0;max-width:760px;display:grid;gap:12px}
.pick{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;align-items:center;padding:16px;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 1px 3px rgba(15,23,42,.05)}
.pick:first-child{border-color:var(--accent);background:#f7faff}
.rank{grid-row:span 2;font-weight:800;font-size:1.15rem;color:#fff;background:var(--accent);border-radius:8px;padding:6px 10px}
.pick-name{margin:0;font-size:1.15rem}
.pick-tag{margin:0;color:var(--muted);font-size:.93rem}
.pick-cta{grid-column:2}
.related{max-width:760px;margin:2.4em auto 0}
.related h2,.sec-h{font-size:1.3rem;margin:1.8em 0 .6em}
.cards{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{display:block;padding:14px 16px;border:1px solid var(--line);border-radius:10px;text-decoration:none;color:inherit;background:#fff}
.card:hover{border-color:var(--accent);background:#f7faff}
.card-t{display:block;font-weight:700;color:#111827;margin-bottom:4px}
.card-d{display:block;font-size:.88rem;color:var(--muted);line-height:1.45}
.plain{padding-left:20px;columns:1}
@media(min-width:640px){.plain{columns:2}}
.site-footer{margin-top:40px;background:var(--gray);border-top:1px solid var(--line);padding:30px 0 20px;font-size:.92rem}
.fgrid{display:grid;gap:22px;grid-template-columns:1fr 1fr}
@media(min-width:760px){.fgrid{grid-template-columns:repeat(4,1fr)}}
.fh{font-size:.95rem;margin:0 0 8px}
.fcol ul{list-style:none;margin:0;padding:0}
.fcol li{margin:6px 0}
.fcol a{color:#374151;text-decoration:none}
.fcol a:hover{text-decoration:underline}
.fnote{margin-top:22px;border-top:1px solid var(--line);padding-top:16px;color:var(--muted)}
.disclosure{margin:0 0 8px;max-width:760px}
.copy{margin:0}
.popup[hidden]{display:none}
.popup{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:16px}
.popup-backdrop{position:absolute;inset:0;background:rgba(17,24,39,.55)}
.popup-card{position:relative;width:100%;max-width:440px;background:#fff;border-radius:14px;padding:26px 22px 22px;box-shadow:0 20px 50px rgba(0,0,0,.3);outline:none}
.popup-card h2{margin:0 0 8px;font-size:1.3rem;padding-right:28px}
.popup-card p{margin:0 0 16px;color:var(--muted)}
.popup-close{position:absolute;top:8px;right:8px;width:44px;height:44px;border:0;background:transparent;font-size:1.8rem;line-height:1;color:#4b5563;cursor:pointer;border-radius:8px}
.popup-close:hover{background:var(--gray)}
.popup-actions{display:flex;flex-direction:column;gap:10px}
@media(min-width:520px){.popup-actions{flex-direction:row}.popup-actions .btn{flex:1}}
:focus-visible{outline:3px solid #93b4fb;outline-offset:2px}
@media(max-width:420px){.hdr-cta{padding:8px 10px;font-size:.8rem}.hk-text{font-size:.92rem}.brandmark{width:22px;height:22px}}