:root {
  --bg: #070b12; --card: #121a24; --ink: #e8eef6; --muted: #9aa8b8;
  --accent: #84cc16; --accent2: #38bdf8; --navy: #0b1f3a;
  --border: #243041; --radius: 12px;
  --shadow: 0 16px 40px rgba(0,0,0,.45);
  --card-shadow: 0 16px 40px rgba(0,0,0,.4);
  --card-shadow-hover: 0 22px 52px rgba(56,189,248,.18);
  --hero-wash: linear-gradient(135deg, rgba(11,31,58,.55), rgba(132,204,22,.14));
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.6; }
.skip { position: absolute; left: -999px; }
.wrap { width: min(1000px, 92vw); margin: 0 auto; }
.site-header { background: linear-gradient(100deg, #05070a, #0b1f3a 70%); border-bottom: 1px solid var(--border); padding: 1rem 0; box-shadow: 0 10px 30px rgba(0,0,0,.45); }
.brand-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; }
.logo { color: var(--accent); font-weight: 750; text-decoration: none; letter-spacing: -.02em; font-size: 1.1rem; }
nav { display: flex; flex-wrap: wrap; gap: .55rem 1rem; }
nav a { color: var(--muted); text-decoration: none; font-size: .88rem; font-weight: 600; }
nav a.active, nav a:hover { color: var(--accent2); }
.disclosure { background: #1a2330; border: 1px solid #334155; border-radius: 8px; padding: .7rem 1rem; margin: 1rem auto; font-size: .88rem; color: #cbd5e1; }
.hero { padding: 2.4rem 0 1.2rem; }
.hero h1 { margin: 0 0 .5rem; font-size: clamp(1.7rem, 3.8vw, 2.4rem); letter-spacing: -.03em; }
.hero h1 span { color: var(--accent); }
.lede { color: var(--muted); max-width: 40rem; font-size: 1.05rem; }
.section { padding: 1.5rem 0; }
.section h2 { font-size: 1.2rem; color: var(--accent2); font-weight: 700; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.product-card, .card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem; text-decoration: none; color: inherit; box-shadow: var(--shadow); }
.product-card h3, .card h3 { margin: 0 0 .35rem; font-size: 1rem; color: #f1f5f9; }
.why, .muted { color: var(--muted); font-size: .92rem; }
.price { font-weight: 700; color: var(--accent); }
.asin { font-size: .75rem; color: #64748b; font-family: ui-monospace, monospace; }
.btn { display: inline-block; background: transparent; color: var(--accent) !important; border: 1px solid var(--accent); text-decoration: none; font-weight: 700; padding: .5rem 1rem; border-radius: 999px; font-size: .9rem; }
.btn:hover { background: rgba(94,234,212,.12); }
.btn-solid { background: var(--accent); color: #042f2e !important; border-color: var(--accent); }
.btn-solid:hover { background: #2dd4bf; }
.callout { background: linear-gradient(120deg, #0f766e, #0e7490); color: #ecfeff; padding: 1.15rem 1.25rem; border-radius: 12px; margin: 1.2rem 0; }
.callout a { color: #fff; font-weight: 800; text-decoration: underline; }
.outline li { margin: .4rem 0; color: var(--muted); }
.site-footer { background: #05070a; border-top: 1px solid var(--border); color: #94a3b8; padding: 2rem 0; margin-top: 1.5rem; font-size: .88rem; }
.site-footer a { color: var(--accent2); }
article.prose { max-width: 42rem; }
article.prose h1 { letter-spacing: -.02em; }
.cta-row { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1rem; }


/* --- 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; }
}

.product-card .product-img { background: #0f141b; }

/* --- 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; }
}