:root {
  --bg: #ffffff;
  --bg-soft: #f7f7f5;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --line: #e6e6e2;
  --accent: #0F6E56;
  --accent-dark: #0a5342;
  --danger: #b42318;
  --radius: 10px;
  --max: 1120px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--fg);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.6;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

button, input, select, textarea { font: inherit; color: inherit; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(180%) blur(6px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}

.logo {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.logo span { color: var(--accent); }

.nav {
  display: flex;
  gap: 20px;
  margin-left: 8px;
  font-size: 14px;
}

.nav a { color: var(--muted); padding: 4px 0; }
.nav a.active, .nav a:hover { color: var(--fg); }
.nav a.active { border-bottom: 2px solid var(--accent); }

.header-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 14px;
}

.lang-switch {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
}

.lang-switch button {
  border: 0;
  background: transparent;
  padding: 5px 10px;
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
}

.lang-switch button.on {
  background: var(--fg);
  color: #fff;
}

.cart-link {
  position: relative;
  font-size: 14px;
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
}

.cart-count {
  position: absolute;
  top: -6px;
  right: -6px;
  min-width: 18px;
  height: 18px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  line-height: 18px;
  text-align: center;
  padding: 0 4px;
}

/* ---------- hero ---------- */
.hero {
  padding: 64px 20px 56px;
  display: grid;
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0;
  font-weight: 600;
}

.hero p {
  color: var(--muted);
  margin: 0 auto;
  max-width: 520px;
  font-size: 15px;
}

.hero .btn { justify-self: center; margin-top: 8px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}

.btn:hover { background: var(--accent-dark); border-color: var(--accent-dark); }

.btn.ghost {
  background: #fff;
  color: var(--fg);
  border-color: var(--line);
}

.btn.ghost:hover { background: var(--bg-soft); }

.btn.block { width: 100%; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---------- sections ---------- */
.section { padding: 8px 0 56px; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin: 8px 0 20px;
}

.section-head h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}

.section-head a { font-size: 14px; color: var(--accent); }

/* ---------- product grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s, transform 0.15s;
}

.card:hover { border-color: #c9c9c2; transform: translateY(-2px); }

.card-img {
  aspect-ratio: 4 / 3;
  background: var(--bg-soft);
  overflow: hidden;
}

.card-img img { width: 100%; height: 100%; object-fit: cover; }

.card-body {
  padding: 14px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.card-cat { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }

.card-name {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 39px;
}

.card-price { font-size: 16px; font-weight: 600; margin-top: auto; }

.card-sold-out { color: var(--muted); font-size: 12px; }

/* ---------- filters ---------- */
.filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 4px 0 24px;
}

.chip {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
}

.chip.on { background: var(--fg); border-color: var(--fg); color: #fff; }

/* ---------- product detail ---------- */
.detail {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  padding: 32px 0 56px;
}

.detail-gallery { display: grid; gap: 10px; }

.detail-gallery .main {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-soft);
  aspect-ratio: 1 / 1;
}

.detail-gallery img { width: 100%; height: 100%; object-fit: cover; }

.detail h1 { font-size: 26px; margin: 0 0 8px; font-weight: 600; letter-spacing: -0.02em; }

.detail .price { font-size: 24px; font-weight: 600; margin: 12px 0 20px; }

.detail .desc { color: var(--muted); font-size: 14px; margin: 0 0 24px; white-space: pre-line; }

.field-group { margin-bottom: 20px; }

.field-label {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  display: block;
}

.opts { display: flex; gap: 8px; flex-wrap: wrap; }

.opt {
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-size: 13px;
  cursor: pointer;
}

.opt.on { border-color: var(--accent); color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }

.qty {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.qty button {
  width: 36px;
  height: 38px;
  border: 0;
  background: #fff;
  cursor: pointer;
  font-size: 16px;
}

.qty input {
  width: 48px;
  height: 38px;
  border: 0;
  text-align: center;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

.detail-actions { display: flex; gap: 12px; margin-top: 24px; }

/* ---------- table-ish / cart ---------- */
.cart-list { border-top: 1px solid var(--line); }

.cart-row {
  display: grid;
  grid-template-columns: 84px 1fr auto;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
}

.cart-row img {
  width: 84px;
  height: 84px;
  object-fit: cover;
  border-radius: 8px;
  background: var(--bg-soft);
}

.cart-row .meta { display: flex; flex-direction: column; gap: 4px; }
.cart-row .meta small { color: var(--muted); }
.cart-row .line-total { font-weight: 600; text-align: right; min-width: 90px; }

.link-btn {
  border: 0;
  background: none;
  padding: 0;
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.summary {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--bg-soft);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  padding: 6px 0;
  color: var(--muted);
}

.summary-row.total {
  border-top: 1px solid var(--line);
  margin-top: 10px;
  padding-top: 12px;
  color: var(--fg);
  font-size: 17px;
  font-weight: 600;
}

.two-col {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  padding: 32px 0 64px;
  align-items: start;
}

/* ---------- forms ---------- */
.form { display: grid; gap: 18px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

label.lbl {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
}

label.lbl .optional { color: var(--muted); font-weight: 400; }

.input, textarea.input, select.input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}

.input:focus { border-color: var(--accent); }

textarea.input { resize: vertical; min-height: 80px; }

.hint { font-size: 12px; color: var(--muted); margin-top: 6px; }

.err { color: var(--danger); font-size: 12px; margin-top: 6px; display: none; }
.err.show { display: block; }

.delivery-opts { display: grid; gap: 10px; }

.delivery-opt {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  cursor: pointer;
  background: #fff;
}

.delivery-opt.on { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }

.delivery-opt input { margin-top: 4px; accent-color: var(--accent); }

.delivery-opt .d-title { font-size: 14px; font-weight: 500; }
.delivery-opt .d-desc { font-size: 12px; color: var(--muted); }
.delivery-opt .d-fee { margin-left: auto; font-size: 13px; color: var(--muted); }

/* ---------- misc ---------- */
.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}

.center-box { max-width: 560px; margin: 48px auto 72px; text-align: center; }

.badge {
  display: inline-block;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  background: #eaf3de;
  color: #3b6d11;
}

.order-no {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 20px;
  letter-spacing: 0.04em;
  background: var(--bg-soft);
  padding: 10px 16px;
  border-radius: 8px;
  display: inline-block;
  margin: 8px 0 4px;
}

.hr { height: 1px; background: var(--line); margin: 28px 0; }

.empty { padding: 64px 0; text-align: center; color: var(--muted); }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 48px;
  margin-top: 40px;
  color: var(--muted);
  font-size: 13px;
}

.footer-inner { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

/* ---------- responsive ---------- */
@media (max-width: 880px) {
  .detail { grid-template-columns: 1fr; gap: 24px; padding: 20px 0 40px; }
  .two-col { grid-template-columns: 1fr; gap: 24px; }
  .hero { padding: 44px 20px 36px; }
}

@media (max-width: 640px) {
  body { font-size: 14px; }
  .nav { display: none; }
  .header-inner { gap: 12px; height: 56px; }
  .grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .card-body { padding: 10px 10px 12px; }
  .card-name { font-size: 13px; min-height: 36px; }
  .card-price { font-size: 14px; }
  .form-row { grid-template-columns: 1fr; }
  .cart-row { grid-template-columns: 64px 1fr; row-gap: 8px; }
  .cart-row img { width: 64px; height: 64px; }
  .cart-row .line-total { grid-column: 2; text-align: left; }
  .detail-actions { flex-direction: column; }
  .detail-actions .btn { width: 100%; }
  .container { padding: 0 16px; }
}