:root {
  --paper:#fff; --surface:#f2f4f7; --ink:#121722; --muted:#566071; --rule:#dde2ea;
  --bar:#14305f; --link:#1b4fd8; --cta:#f2a516; --cta-ink:#1a1300; --pro:#1b7a4b; --con:#b4362b;
  --serif:"Iowan Old Style",Charter,Georgia,serif; --sans:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --paper:#0f131b; --surface:#171d28; --ink:#e9edf4; --muted:#9aa5b8; --rule:#283042; --bar:#0a0f1e; --link:#8fb0ff; --pro:#4cc28a; --con:#ff8a7d; }
}
* { box-sizing:border-box; }
html { background:var(--paper); color:var(--ink); }
body { margin:0; font:1rem/1.6 var(--sans); padding-bottom:env(safe-area-inset-bottom,0px); }
a { color:var(--link); text-underline-offset:.18em; }
a:focus-visible,summary:focus-visible { outline:3px solid var(--link); outline-offset:3px; }
img { display:block; max-width:100%; }
.wrap { max-width:72rem; margin:0 auto; padding:0 1.25rem; }
.bar { background:var(--bar); color:#fff; padding-top:env(safe-area-inset-top,0px); }
.bar-in { display:flex; align-items:center; gap:2rem; min-height:3.6rem; }
.brand { font:700 1.3rem/1 var(--serif); color:#fff; text-decoration:none; white-space:nowrap; }
.topnav { display:flex; gap:1.3rem; overflow-x:auto; font-size:.95rem; scrollbar-width:none; }
.topnav a { color:#d6e0f5; text-decoration:none; white-space:nowrap; padding:.3rem 0; }
.topnav a:hover { color:#fff; text-decoration:underline; }
main { padding-top:2rem; padding-bottom:3rem; }
h1,h2,h3 { font-family:var(--serif); line-height:1.2; }
.sec { font-size:1.5rem; margin:2.8rem 0 1rem; padding-top:1rem; border-top:2px solid var(--ink); }
.page-h { font-size:2.2rem; margin:0 0 1.5rem; }
.tag { font-size:.85rem; font-weight:600; color:var(--link); }
.meta { display:block; font-size:.85rem; color:var(--muted); }
.small { font-size:.85rem; color:var(--muted); }
.hero .lead { display:grid; grid-template-columns:1.25fr 1fr; gap:2rem; align-items:center; text-decoration:none; color:inherit; }
.lead img { width:100%; aspect-ratio:1200/630; object-fit:cover; border-radius:4px; }
.lead h2 { font-size:2.2rem; margin:.3rem 0 .6rem; }
.lead p { font-size:1.1rem; margin:0 0 .8rem; }
.lead:hover h2,.card:hover h3 { text-decoration:underline; }
.grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(17rem,1fr)); gap:1.6rem; }
.card { display:block; color:inherit; text-decoration:none; border:1px solid var(--rule); border-radius:4px; overflow:hidden; }
.card img { width:100%; aspect-ratio:1200/630; object-fit:cover; }
.card-body { padding:1rem 1.1rem 1.2rem; }
.card h3 { font-size:1.15rem; margin:.25rem 0 .4rem; }
.card p { margin:0 0 .6rem; color:var(--muted); font-size:.95rem; }
.crumbs { font-size:.85rem; color:var(--muted); margin-bottom:1rem; }
.post-head { max-width:46rem; }
.post-head h1 { font-size:2.5rem; margin:0 0 .6rem; letter-spacing:-.015em; }
.dek { font-size:1.2rem; color:var(--muted); margin:0 0 .6rem; }
.cover { width:100%; aspect-ratio:1200/630; max-height:26rem; object-fit:cover; border-radius:4px; margin:1.4rem 0; }
.verdict { display:grid; grid-template-columns:1fr 1fr; gap:2rem; background:var(--surface); border-top:4px solid var(--bar); padding:1.5rem; margin:0 0 1rem; }
.verdict h2 { font-size:1.3rem; margin:0 0 .5rem; }
.pc { display:grid; grid-template-columns:1fr 1fr; gap:1.2rem; }
.pc h3 { font-size:1rem; margin:0 0 .3rem; }
.pc ul { margin:0; padding-left:1.1rem; font-size:.95rem; }
.pro { color:var(--pro); } .con { color:var(--con); }
.note { font-size:.88rem; color:var(--muted); margin:0 0 2rem; }
.cta { display:inline-block; background:var(--cta); color:var(--cta-ink); font-weight:700; padding:.8rem 1.4rem; border-radius:4px; text-decoration:none; }
.cta:hover { filter:brightness(1.07); }
.layout { display:grid; grid-template-columns:13rem minmax(0,40rem); gap:3.5rem; justify-content:center; }
.toc { position:sticky; top:1.5rem; align-self:start; font-size:.92rem; }
.toc h2 { font-size:1rem; margin:0 0 .5rem; }
.toc ol { margin:0; padding-left:1.1rem; } .toc li { margin:.35rem 0; }
.prose { font:1.125rem/1.75 var(--serif); }
.prose h2 { font-size:1.55rem; margin:2.4rem 0 .5rem; }
.prose ul { padding-left:1.3rem; }
.prose.page { max-width:42rem; margin:0 auto; }
.faq details { border-bottom:1px solid var(--rule); padding:.8rem 0; }
.faq summary { cursor:pointer; font-weight:600; font-family:var(--sans); }
.sources { font-family:var(--sans); font-size:.92rem; }
.foot { background:var(--surface); border-top:1px solid var(--rule); padding:2.5rem 0; font-size:.92rem; color:var(--muted); }
.foot-in { display:grid; grid-template-columns:2fr 1fr 1fr; gap:2rem; }
.foot ul { list-style:none; margin:0; padding:0; } .foot li { margin:.3rem 0; }
.foot-brand { font:700 1.2rem var(--serif); color:var(--ink); margin:0 0 .4rem; }
.foot-h { font-weight:700; color:var(--ink); margin:0 0 .4rem; }
@media (max-width:900px) {
  .layout { display:block; } .toc { display:none; }
  .hero .lead { grid-template-columns:1fr; gap:1rem; } .lead h2 { font-size:1.7rem; }
}
@media (max-width:640px) {
  .verdict,.pc,.foot-in { grid-template-columns:1fr; } .post-head h1 { font-size:1.9rem; }
  .bar-in { gap:1rem; flex-wrap:wrap; padding:.6rem 0; }
}
.pager{margin:2rem 0;display:flex;gap:1.5rem;font-weight:600}
.credit{font-size:.8rem;color:var(--muted);margin:-.8rem 0 1.4rem}
.guide-diagram{margin:1.5rem 0;padding:.6rem;border:1px solid var(--rule);border-radius:12px;background:#fff;color:#121722}
.guide-diagram img{width:100%;height:auto}
.guide-diagram figcaption,.guide-diagram ul{font: .85rem/1.5 var(--sans);padding:.5rem}
.cover{object-fit:contain}