:root {
  --ink: #1c2330;
  --muted: #5b6472;
  --accent: #1f5fbf;
  --accent-dark: #17488f;
  --bg: #f6f7f9;
  --card: #ffffff;
  --line: #e3e6ea;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}
.site-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 28px; background: var(--card); border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.brand-name { font-weight: 700; font-size: 18px; letter-spacing: .2px; }
.brand-dot { font-weight: 500; color: var(--muted); }
.dot { color: var(--accent); font-weight: 800; }
.site-head nav a { color: var(--accent); text-decoration: none; font-weight: 600; }
main { max-width: 1000px; margin: 0 auto; padding: 34px 22px; }
.product { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; align-items: start; }
@media (max-width: 760px) { .product { grid-template-columns: 1fr; } }
.product-media { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 26px; }
.product-media svg { width: 100%; height: auto; }
.media-note { color: var(--muted); font-size: 12px; text-align: center; margin: 10px 0 0; }
.badge {
  display: inline-block; background: #e8f2e8; color: #256d33;
  font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 20px; margin: 0 0 8px;
}
h1 { font-size: 27px; margin: 0 0 10px; }
.price { font-size: 30px; font-weight: 800; margin: 6px 0; }
.price-note { font-size: 13px; font-weight: 400; color: var(--muted); }
.tagline { color: var(--muted); margin: 10px 0 16px; }
.highlights { margin: 0 0 22px; padding-left: 20px; }
.highlights li { margin: 5px 0; }
.buy-btn {
  display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  font-weight: 700; font-size: 17px; padding: 13px 30px; border-radius: 10px;
}
.buy-btn:hover { background: var(--accent-dark); }
.sku { color: var(--muted); font-size: 12px; margin-top: 12px; }
.specs { margin-top: 48px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 26px 30px; }
.specs h2 { margin-top: 0; }
.specs table { width: 100%; border-collapse: collapse; }
.specs th, .specs td { text-align: left; padding: 9px 10px; border-top: 1px solid var(--line); vertical-align: top; }
.specs th { width: 170px; color: var(--muted); font-weight: 600; }
.checkout h1 { margin-bottom: 4px; }
.summary { font-size: 18px; }
.pay-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 26px 0; }
@media (max-width: 760px) { .pay-options { grid-template-columns: 1fr; } }
.pay-card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px 22px; }
.pay-card h2 { font-size: 16px; margin: 0 0 8px; }
.pay-card p { margin: 0; color: var(--muted); font-size: 14px; }
.policy { color: var(--muted); font-size: 14px; }
a { color: var(--accent); }
.site-foot { border-top: 1px solid var(--line); margin-top: 50px; padding: 22px; text-align: center; color: var(--muted); font-size: 13px; }
.fineprint { font-size: 11px; }