:root {
  --bg: #e8eef8; --card: #ffffff; --ink: #0b1f3a; --muted: #4b5870;
  --accent: #1e3a8a; --accent2: #84cc16; --amber: #f59e0b;
  --border: #b8c7de; --radius: 10px;
  --shadow: 0 14px 34px rgba(30,58,138,.15);
  --card-shadow: 0 14px 34px rgba(11,31,58,.14);
  --card-shadow-hover: 0 20px 46px rgba(11,31,58,.22);
  --hero-wash: linear-gradient(120deg, rgba(30,58,138,.12), rgba(132,204,22,.14));
  font-family: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.5; }
.skip { position: absolute; left: -999px; }
.wrap { width: min(1040px, 94vw); margin: 0 auto; }
.site-header { background: linear-gradient(110deg, #0b1f3a, #1e3a8a 60%, #243b6b); color: #f8fafc; padding: .85rem 0; border-bottom: 4px solid var(--accent2); box-shadow: 0 8px 24px rgba(11,31,58,.3); }
.brand-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .75rem; }
.logo { color: #f8fafc; font-weight: 700; text-decoration: none; text-transform: uppercase; letter-spacing: .06em; font-size: .95rem; }
nav { display: flex; flex-wrap: wrap; gap: .5rem .9rem; }
nav a { color: #cbd5e1; text-decoration: none; font-size: .85rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
nav a.active, nav a:hover { color: var(--accent2); }
.disclosure { background: #fffbeb; border: 1px solid #fcd34d; padding: .65rem .9rem; margin: .9rem auto; font-size: .88rem; }
.hero { padding: 1.9rem 0 1.2rem; background: linear-gradient(180deg, #ffffff, #e8eef8); border-bottom: 1px solid var(--border); }
.hero h1 { margin: 0 0 .4rem; font-size: clamp(1.45rem, 3vw, 1.95rem); font-weight: 750; }
.lede { color: var(--muted); max-width: 40rem; margin: 0; }
.section { padding: 1.4rem 0; }
.section h2 { font-size: 1.15rem; text-transform: uppercase; letter-spacing: .05em; border-left: 4px solid var(--accent2); padding-left: .6rem; }
.grid { display: grid; gap: .85rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.product-card, .card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: .95rem 1rem; text-decoration: none; color: inherit; box-shadow: var(--shadow); }
.product-card h3, .card h3 { margin: 0 0 .3rem; font-size: .98rem; }
.why, .muted { color: var(--muted); font-size: .9rem; }
.price { font-weight: 700; margin: .35rem 0; }
.asin { font-size: .75rem; color: #7a8490; font-family: ui-monospace, monospace; }
.btn { display: inline-block; background: #1e293b; color: #fff !important; text-decoration: none; font-weight: 700; padding: .45rem .85rem; border-radius: 2px; font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; }
.btn:hover { background: #0f172a; }
.callout { background: #1e293b; color: #e2e8f0; padding: 1rem; margin: 1rem 0; border-left: 4px solid var(--accent2); font-size: .92rem; }
.callout a { color: var(--accent2); font-weight: 700; }
.outline li { margin: .35rem 0; color: var(--muted); }
.site-footer { background: #0f172a; color: #94a3b8; padding: 1.6rem 0; margin-top: 1.2rem; font-size: .85rem; }
.site-footer a { color: #fbbf24; }
article.prose { max-width: 44rem; background: #fff; padding: 1.4rem 1.5rem; border: 1px solid var(--border); }
article.prose h1 { margin-top: 0; font-size: 1.55rem; }
.kpi { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
.kpi span { background: #1e293b; color: #fff; font-size: .75rem; font-weight: 700; padding: .3rem .55rem; text-transform: uppercase; letter-spacing: .05em; }


/* --- polish: images, hero, cards, mobile --- */
img { max-width: 100%; height: auto; display: block; }
.hero-layout { display: grid; gap: 1.5rem; align-items: center; }
@media (min-width: 768px) {
  .hero-layout { grid-template-columns: 1.15fr 0.85fr; }
}
.hero-media { margin: 0; border-radius: 14px; overflow: hidden; box-shadow: 0 12px 32px rgba(0,0,0,.12); }
.hero-media img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.product-card { display: flex; flex-direction: column; }
.product-card .product-img {
  margin: -0.15rem -0.15rem 0.85rem;
  background: #f8fafc;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  display: flex; align-items: center; justify-content: center;
}
.product-card .product-img img {
  width: 100%; height: 100%; object-fit: contain; padding: 0.65rem;
}
.product-card .btn { margin-top: auto; align-self: flex-start; }
.card-grid-tight { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.related-guides { margin-top: 1.25rem; font-size: .92rem; opacity: .95; }
.related-guides a { font-weight: 650; }
.site-header nav { gap: .5rem .85rem; }
@media (max-width: 640px) {
  .brand-row { flex-direction: column; align-items: flex-start; }
  nav { width: 100%; }
  .hero { padding-top: 1.4rem; }
  .product-card .product-img { aspect-ratio: 4/3; }
}

/* --- visual-upgrade 2026-08-22: accents, shadows, larger product art, heroes --- */
.product-card, .card {
  box-shadow: var(--card-shadow, 0 14px 36px rgba(15, 23, 42, .14)) !important;
  transition: transform .18s ease, box-shadow .18s ease;
}
.product-card:hover, .card:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover, 0 18px 44px rgba(15, 23, 42, .2)) !important;
}
.product-card .product-img {
  aspect-ratio: 1 / 1;
  min-height: 220px;
  background: linear-gradient(180deg, #fff, #f1f5f9);
  border-radius: 12px;
}
.product-card .product-img img {
  padding: 0.35rem;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.hero {
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: 0;
  opacity: .55;
  background: var(--hero-wash, linear-gradient(135deg, rgba(30,58,138,.08), rgba(132,204,22,.08)));
  z-index: 0;
}
.hero > * { position: relative; z-index: 1; }
.hero-media {
  box-shadow: 0 18px 48px rgba(15, 23, 42, .22) !important;
  border: 1px solid rgba(255,255,255,.35);
}
@media (max-width: 640px) {
  .product-card .product-img { min-height: 180px; aspect-ratio: 4/3; }
}

body{font-size:1.05rem;line-height:1.65}.price{font-size:1.25rem}.price-asof{font-size:.78rem;color:#6b7c93;margin:-.15rem 0 .7rem}.hero p.lede{font-size:1.15rem;max-width:38rem}