:root {
  --bg: var(--tg-theme-bg-color, #ffffff);
  --bg2: var(--tg-theme-secondary-bg-color, #f2f3f5);
  --text: var(--tg-theme-text-color, #111111);
  --hint: var(--tg-theme-hint-color, #8a8f98);
  --accent: var(--tg-theme-button-color, #d4202a);
  --accent-text: var(--tg-theme-button-text-color, #ffffff);
  --line: color-mix(in srgb, var(--hint) 30%, transparent);
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.4 -apple-system, "Segoe UI", Roboto, sans-serif; }
button { font: inherit; color: inherit; cursor: pointer; }
.top { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 8px;
  padding: 10px 16px; background: var(--bg); border-bottom: 1px solid var(--line); }
.top h1 { flex: 1; margin: 0; font-size: 18px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.back, .cart-btn { border: 0; background: var(--bg2); border-radius: 10px; min-width: 40px; height: 40px; font-size: 20px; position: relative; }
#cartCount { position: absolute; top: -4px; right: -4px; background: var(--accent); color: var(--accent-text);
  font-size: 11px; border-radius: 9px; min-width: 18px; padding: 1px 5px; }
.demo-note { background: #fff4d6; color: #6b4e00; font-size: 12px; text-align: center; padding: 4px 16px; }
main { padding: 12px 16px 96px; }
.chips { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 8px; margin: 0 -16px 8px; padding-left: 16px; scrollbar-width: none; }
.chip { flex: none; border: 1px solid var(--line); background: var(--bg); border-radius: 18px; padding: 6px 12px; }
.chip.on { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.chip:disabled { opacity: .4; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.card { border: 0; padding: 0; background: var(--bg2); border-radius: 12px; overflow: hidden; text-align: left; }
.card img, .product img { width: 100%; aspect-ratio: 1; object-fit: contain; background: #fff; display: block; }
.card .t { padding: 8px 10px 0; font-size: 13px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 36px; }
.card .p { padding: 4px 10px 10px; font-weight: 700; }
.product h2 { font-size: 18px; margin: 12px 0 4px; }
.price { font-size: 22px; font-weight: 700; margin: 4px 0 12px; }
.opt { margin: 12px 0; }
.opt .l { color: var(--hint); font-size: 13px; margin-bottom: 6px; }
.opt .chips { flex-wrap: wrap; overflow: visible; margin: 0; padding: 0; }
.qty { display: inline-flex; align-items: center; gap: 12px; }
.qty button { width: 34px; height: 34px; border-radius: 10px; border: 0; background: var(--bg2); font-size: 18px; }
.row { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.row img { width: 72px; height: 72px; object-fit: contain; background: #fff; border-radius: 8px; flex: none; }
.row .info { flex: 1; min-width: 0; }
.row .n { font-size: 14px; }
.row .o { color: var(--hint); font-size: 12px; }
.row .del { border: 0; background: none; color: var(--hint); font-size: 13px; padding: 0; }
.total { display: flex; justify-content: space-between; font-size: 18px; font-weight: 700; padding: 16px 0; }
label { display: block; margin: 12px 0 4px; color: var(--hint); font-size: 13px; }
input, textarea { width: 100%; font: inherit; color: var(--text); background: var(--bg2); border: 1px solid transparent;
  border-radius: 10px; padding: 10px 12px; }
input:focus, textarea:focus { outline: none; border-color: var(--accent); }
.radio { display: flex; align-items: center; gap: 10px; padding: 10px 12px; margin: 6px 0; border-radius: 10px; background: var(--bg2); color: var(--text); font-size: 15px; }
.radio input { width: auto; }
.link { border: 0; background: none; color: var(--accent); padding: 4px 0; }
.err { color: #d4202a; font-size: 13px; min-height: 18px; }
.empty, .done { text-align: center; padding: 48px 8px; color: var(--hint); }
.done .big { font-size: 48px; }
.done h2 { color: var(--text); }
.paycard { background: linear-gradient(135deg, #1b1f2a, #3a4152); color: #fff; border-radius: 14px; padding: 18px; margin: 12px 0; }
.paycard .num { font-size: 18px; letter-spacing: 2px; margin: 18px 0 8px; }
.bar { position: fixed; left: 0; right: 0; bottom: 0; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: var(--bg); border-top: 1px solid var(--line); }
.primary { width: 100%; border: 0; border-radius: 12px; padding: 14px; font-weight: 600; background: var(--accent); color: var(--accent-text); }
.primary:disabled { opacity: .5; }