:root {
  --bg: #f7f6f2;
  --card: #ffffff;
  --ink: #1d1f1e;
  --muted: #5f6662;
  --line: #e2e0d9;
  --accent: #1f6f5c;
  --accent-ink: #ffffff;
  --note: #fff7e0;
  --radius: 12px;
  --max: 1080px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(1.7rem, 4vw, 2.6rem); }
h2 { font-size: 1.35rem; margin-top: 0; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 1em; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }

.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: var(--max); margin: 0 auto; padding: 14px 16px;
}
.brand { font-weight: 700; color: var(--ink); }
.top nav { display: flex; gap: 18px; align-items: center; }
.top nav .lang { border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; background: var(--card); }

main { max-width: var(--max); margin: 0 auto; padding: 8px 16px 48px; }
main > section { margin: 40px 0; }
.hero { text-align: center; padding: 28px 0 8px; }
.hero .lead { max-width: 720px; margin: 0 auto 1.2em; }
.lead { font-size: 1.1rem; color: #34403b; }

.btn {
  display: inline-block; background: var(--accent); color: var(--accent-ink);
  padding: 12px 22px; border-radius: 999px; font-weight: 600;
}
.btn:hover { text-decoration: none; filter: brightness(1.08); }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px;
}
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.top-gap { margin-top: 24px; }

.skus { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.sku { display: flex; flex-direction: column; padding: 0; overflow: hidden; color: var(--ink); }
.sku:hover { text-decoration: none; border-color: var(--accent); }
.sku img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; object-position: center top; background: #ece9e1; }
.sku-body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.sku-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.sku-head h3 { margin: 0; }
.code {
  display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .04em;
  background: var(--ink); color: #fff; border-radius: 6px; padding: 1px 7px;
}
.badge { font-size: .75rem; border: 1px solid var(--line); border-radius: 999px; padding: 1px 8px; color: var(--muted); }
.price-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-top: auto; }
.price-row strong { font-size: 1.25rem; }
.price-row.big strong { font-size: 1.8rem; }
.price-row.big { justify-content: flex-start; gap: 16px; margin: 8px 0 12px; }

.steps { padding-left: 1.3em; }
.steps li { margin-bottom: .5em; }

details { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 18px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 10px 0 2px; }

.product-top { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.product-top img { width: 100%; border-radius: var(--radius); border: 1px solid var(--line); background: #ece9e1; }
.note { background: var(--note); border-radius: 8px; padding: 10px 14px; font-size: .95rem; }
.specs { width: 100%; border-collapse: collapse; font-size: .95rem; }
.specs th, .specs td { text-align: left; padding: 7px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.specs th { width: 38%; font-weight: 600; color: var(--muted); }
.card ul { padding-left: 1.2em; margin: 0; }
.card ul li { margin-bottom: .35em; }

.form-card label { display: block; font-size: .9rem; color: var(--muted); margin-bottom: 10px; }
.form-card input[type=text], .form-card input[type=email], .form-card select, .form-card textarea {
  display: block; width: 100%; margin-top: 4px; padding: 10px 12px; font: inherit; color: var(--ink);
  border: 1px solid var(--line); border-radius: 8px; background: #fff;
}
.form-card fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; margin: 4px 0 12px; }
.form-card legend { font-size: .9rem; color: var(--muted); padding: 0 4px; }
.form-card .radio, .form-card .check { display: flex; gap: 8px; align-items: flex-start; color: var(--ink); font-size: .95rem; }
.form-card .radio input, .form-card .check input { margin-top: 4px; }
.form-card button {
  font: inherit; font-weight: 600; background: var(--accent); color: #fff; border: 0;
  border-radius: 999px; padding: 12px 28px; cursor: pointer;
}
.form-card button[disabled] { opacity: .6; cursor: default; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.status { min-height: 1.4em; font-weight: 600; }
.status.ok { color: var(--accent); }
.status.err { color: #a33; }

footer { max-width: var(--max); margin: 0 auto; padding: 24px 16px 40px; color: var(--muted); font-size: .875rem; border-top: 1px solid var(--line); }

@media (max-width: 760px) {
  .grid2, .grid3, .skus, .product-top { grid-template-columns: 1fr; }
  .top { flex-wrap: wrap; }
  .top nav { gap: 12px; }
  .price-row.big { flex-direction: column; gap: 2px; }
}