:root {
  color-scheme: light dark;
  --paper: #f4f4f1;
  --ink: #111210;
  --muted: #5d605a;
  --line: #c8c9c3;
  --soft: #e7e7e2;
  --card: #fbfbf8;
  --reverse: #111210;
  --reverse-ink: #f7f7f3;
  --signal: #e34c2a;
  --signal-soft: #f7d8cf;
  --green: #196b45;
  --shadow: 0 18px 48px rgba(22, 24, 20, .09);
  --radius: 10px;
  --sans: "Manrope", sans-serif;
  --mono: "IBM Plex Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #111210;
    --ink: #f1f2ed;
    --muted: #a8aba3;
    --line: #3a3d38;
    --soft: #20221f;
    --card: #171916;
    --reverse: #f2f3ee;
    --reverse-ink: #111210;
    --signal: #ff6b47;
    --signal-soft: #4a251c;
    --green: #6bc697;
    --shadow: 0 22px 60px rgba(0, 0, 0, .3);
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
}
html { scroll-behavior: smooth; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
button, input { font: inherit; }
img, svg { display: block; max-width: 100%; }

/* ---------- nav (shared with homepage) ---------- */
.site-nav {
  position: sticky; top: 0; z-index: 20;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: 1240px; margin: 0 auto; min-height: 66px; padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.nav-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-brand svg { width: 26px; height: 26px; }
.nav-brand span { font-weight: 800; letter-spacing: -.02em; font-size: 17px; }
.mobile-menu-button {
  display: none; border: 1px solid var(--line); background: transparent; color: var(--ink);
  padding: 7px 10px; font-family: var(--mono); font-size: 9px; text-transform: uppercase; cursor: pointer;
}
.nav-links { display: flex; align-items: center; gap: clamp(18px, 3vw, 38px); }
.nav-links button { border: 0; background: none; color: inherit; cursor: pointer; padding: 9px 0; font-size: 13px; font-weight: 650; }
.nav-links button:hover { color: var(--signal); }
.nav-handle { margin-left: auto; font-family: var(--mono); font-size: 10px; color: var(--muted); letter-spacing: .03em; }

/* ---------- layout ---------- */
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 28px; }
.eyebrow {
  margin: 0; font-family: var(--mono); font-size: 11px; font-weight: 600;
  letter-spacing: .09em; text-transform: uppercase;
}
.section { padding: 56px 0; border-top: 1px solid var(--line); }
.section-head { margin-bottom: 28px; }
.section-head h2 { margin: 8px 0 0; font-size: clamp(26px, 4vw, 40px); letter-spacing: -.03em; line-height: 1.05; }
.section-head p { color: var(--muted); max-width: 640px; }

/* ---------- breadcrumb ---------- */
.crumbs { padding: 22px 0 0; font-family: var(--mono); font-size: 11px; color: var(--muted); letter-spacing: .02em; }
.crumbs .sep { margin: 0 8px; color: var(--line); }
.crumbs .here { color: var(--ink); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--ink); text-decoration: underline; }

/* ---------- product hero ---------- */
.product-hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; padding: 40px 0 56px; align-items: start; }
.product-hero .eyebrow { color: var(--signal); }
.product-hero h1 { margin: 10px 0 0; font-size: clamp(38px, 6vw, 68px); line-height: .98; letter-spacing: -.045em; }
.product-tag { margin: 18px 0 0; color: var(--muted); font-size: 17px; max-width: 520px; }
.badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.badge {
  font-family: var(--mono); font-size: 10px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; color: var(--ink); background: var(--card);
}
.product-visual {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 36px; display: flex; flex-direction: column; align-items: center; gap: 18px;
}
.product-visual svg { width: min(100%, 300px); height: auto; }
.visual-caption { font-family: var(--mono); font-size: 10px; color: var(--muted); letter-spacing: .05em; text-transform: uppercase; }

/* ---------- sizes ---------- */
.sizes { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.size-btn {
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  font-family: var(--mono); font-size: 12px; font-weight: 600; padding: 10px 18px;
  border-radius: 999px; cursor: pointer;
}
.size-btn:hover { border-color: var(--ink); }
.size-btn[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.size-note { margin-top: 12px; font-size: 12px; color: var(--muted); }

/* ---------- best price panel ---------- */
.best-panel {
  background: var(--reverse); color: var(--reverse-ink);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: clamp(28px, 5vw, 52px); margin-top: 8px;
  display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center;
}
.best-panel .eyebrow { color: var(--signal); }
.best-price { font-family: var(--mono); font-size: clamp(44px, 7vw, 84px); font-weight: 600; letter-spacing: -.03em; line-height: 1; margin: 12px 0 0; }
.best-meta { margin-top: 14px; display: grid; gap: 6px; font-size: 14px; color: var(--reverse-ink); opacity: .85; }
.best-meta strong { font-weight: 700; }
.best-meta .dim { opacity: .65; font-family: var(--mono); font-size: 11px; }
.view-price {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  background: var(--signal); color: #fff; text-decoration: none;
  min-height: 54px; padding: 0 26px; border-radius: 2px;
  font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: .05em; text-transform: uppercase;
  white-space: nowrap;
}
.view-price:hover { filter: brightness(1.08); }
.best-empty { grid-column: 1 / -1; }
.best-empty p { color: var(--reverse-ink); opacity: .75; max-width: 560px; margin: 12px 0 0; font-size: 15px; }
.best-flag {
  display: inline-block; font-family: var(--mono); font-size: 10px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase; background: var(--signal); color: #fff;
  padding: 6px 12px; border-radius: 999px; margin-bottom: 4px;
}
/* Special-order prominence beside Best Price: never imply immediate availability. */
.so-flag {
  display: inline-block; font-family: var(--mono); font-size: 10px; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase; background: transparent; color: var(--orange, #f59e0b);
  border: 1.5px solid var(--orange, #f59e0b);
  padding: 5px 11px; border-radius: 999px; margin-bottom: 4px; margin-left: 6px;
}
.so-callout {
  margin: 12px 0 0; padding: 12px 14px; border-left: 3px solid var(--orange, #f59e0b);
  background: rgba(245, 158, 11, .12); color: var(--reverse-ink);
  font-size: 13px; line-height: 1.5; max-width: 560px; border-radius: 0 4px 4px 0;
}
.so-callout strong { color: var(--orange, #f59e0b); }

/* ---------- offer rows ---------- */
.offers { display: grid; gap: 14px; margin-top: 8px; }
.offer-group { display: grid; gap: 14px; }
.offer-group-head { border-bottom: 1px solid var(--line); padding-bottom: 10px; margin-top: 6px; }
.offer-group:first-child .offer-group-head { margin-top: 0; }
.offer-group-head h3 { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; margin: 0 0 4px; color: var(--ink); }
.offer-group-head p { font-size: 13px; color: var(--muted); margin: 0; max-width: 640px; }
.offer-group.is-other { margin-top: 10px; }
.offer-group.is-other .offer-group-head h3 { color: var(--muted); }
.offer {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 24px; display: grid;
  grid-template-columns: 1.2fr .8fr .9fr 1fr auto;
  gap: 18px; align-items: center;
}
.offer.is-best { border: 2px solid var(--signal); }
.offer-retailer { font-weight: 800; font-size: 17px; letter-spacing: -.01em; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.best-tag {
  font-family: var(--mono); font-size: 9px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  background: var(--signal); color: #fff; padding: 4px 10px; border-radius: 999px;
}
.offer-price { font-family: var(--mono); font-size: 24px; font-weight: 600; }
.offer-price .ref { display: block; font-size: 12px; color: var(--muted); font-weight: 400; margin-top: 4px; }
.offer-price .ref s { margin-right: 6px; }
.offer-variant { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.stock { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; }
.stock .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.stock.in .dot { background: var(--green); }
.stock.in { color: var(--green); }
.offer-ship { font-size: 12px; color: var(--muted); }
.offer-so { font-size: 12px; font-weight: 600; color: var(--orange, #c2410c); margin-top: 2px; }
.offer-checked { font-family: var(--mono); font-size: 10px; color: var(--muted); }
.offer .view-price { min-height: 46px; padding: 0 20px; font-size: 11px; }
.offers-empty {
  border: 1px dashed var(--line); border-radius: var(--radius);
  padding: 40px 28px; text-align: center; color: var(--muted);
}
.offers-empty strong { display: block; color: var(--ink); font-size: 18px; margin-bottom: 8px; letter-spacing: -.01em; }
.offers-empty p { max-width: 520px; margin: 0 auto; font-size: 14px; }
.disclosure { margin-top: 18px; font-size: 12px; color: var(--muted); max-width: 680px; }

/* ---------- take / standard ---------- */
.take-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(24px, 4vw, 40px); box-shadow: var(--shadow);
}
.take-card blockquote { margin: 12px 0 0; font-size: clamp(17px, 2.4vw, 22px); line-height: 1.55; letter-spacing: -.01em; }
.take-card blockquote::before { content: "“"; }
.take-card blockquote::after { content: "”"; }
.standard-list { list-style: none; margin: 22px 0 0; padding: 0; display: grid; gap: 0; }
.standard-list li {
  display: flex; gap: 14px; align-items: flex-start; padding: 16px 0;
  border-top: 1px solid var(--line); font-size: 15px;
}
.standard-list li:last-child { border-bottom: 1px solid var(--line); }
.standard-list .tick {
  flex: none; width: 22px; height: 22px; border-radius: 50%;
  background: var(--signal-soft); color: var(--signal);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 13px; margin-top: 1px;
}
.standard-list strong { display: block; }
.standard-list span { color: var(--muted); font-size: 14px; }

/* ---------- footer (shared with homepage) ---------- */
.site-footer { border-top: 1px solid var(--line); margin-top: 40px; }
.footer-inner { max-width: 1240px; margin: 0 auto; padding: 28px; display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: end; }
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-brand svg { width: 44px; height: 44px; flex: none; }
.footer-statement { max-width: 480px; }
.footer-statement strong { font-size: 18px; }
.footer-statement p { margin: 8px 0 0; color: var(--muted); font-size: 12px; }
.footer-handle { margin-top: 3px; color: var(--muted); font-family: var(--mono); font-size: 10px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; justify-content: flex-end; }
.footer-links button { border: 0; background: none; color: var(--muted); padding: 0; cursor: pointer; font-size: 11px; }
.footer-links button:hover { color: var(--ink); }

/* ---------- legal panel (shared with homepage) ---------- */
.legal-panel { position: fixed; inset: 0; z-index: 50; background: rgba(0,0,0,.5); display: none; justify-content: flex-end; }
.legal-panel.open { display: flex; }
.legal-sheet { width: min(570px, 100%); height: 100%; overflow: auto; background: var(--paper); padding: 28px clamp(24px, 5vw, 56px) 60px; box-shadow: var(--shadow); }
.legal-sheet h2 { clear: both; margin: 74px 0 18px; font-size: 43px; line-height: 1; letter-spacing: -.05em; }
.legal-sheet h3 { margin: 30px 0 8px; font-size: 16px; }
.legal-sheet p { color: var(--muted); font-size: 14px; }
.legal-sheet .legal-kicker { font-family: var(--mono); font-size: 9px; color: var(--signal); text-transform: uppercase; }
.legal-close { border: 1px solid var(--line); background: transparent; color: var(--ink); width: 36px; height: 36px; border-radius: 50%; cursor: pointer; float: right; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .product-hero { grid-template-columns: 1fr; gap: 32px; }
  .offer { grid-template-columns: 1fr 1fr; }
  .offer .view-price { grid-column: 1 / -1; }
  .best-panel { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .wrap { padding: 0 18px; }
  .nav-inner { min-height: 60px; padding: 0 18px; }
  .mobile-menu-button { display: block; }
  .nav-links { display: none; position: absolute; left: 0; top: 60px; width: 100%; background: var(--paper); border-bottom: 1px solid var(--line); padding: 18px; gap: 18px; flex-wrap: wrap; }
  .nav-links.open { display: flex; }
  .nav-handle { display: none; }
  .section { padding: 40px 0; }
  .offer { grid-template-columns: 1fr; gap: 10px; }
  .footer-inner { padding: 24px 18px; grid-template-columns: 1fr; }
  .footer-brand { align-items: flex-start; }
  .footer-links { justify-content: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ========== Phase 2 staging additions (not part of production identity) ========== */

/* Persistent sample-data notice — present on every staging page. */
.sample-banner {
  background: var(--signal); color: #fff;
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  letter-spacing: .06em; text-transform: uppercase;
  padding: 10px 18px; text-align: center; line-height: 1.5;
}
.sample-banner strong { font-weight: 800; }
.sample-badge {
  display: inline-block; font-family: var(--mono); font-size: 9px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase;
  background: var(--signal-soft); color: var(--signal);
  padding: 4px 10px; border-radius: 999px; margin-right: 8px;
}

/* Variant axis selectors (generalized from .sizes) */
.axis-group { margin-top: 14px; }
.axis-group > p { font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin: 0 0 8px; }
.axis-btns { display: flex; flex-wrap: wrap; gap: 10px; }
.axis-btn {
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  font-family: var(--mono); font-size: 12px; font-weight: 600; padding: 10px 18px;
  border-radius: 999px; cursor: pointer;
}
.axis-btn:hover { border-color: var(--ink); }
.axis-btn[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* Product / category cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; margin-top: 24px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 26px; display: flex; flex-direction: column; gap: 10px;
  text-decoration: none; color: inherit;
}
.card:hover { border-color: var(--ink); }
.card .eyebrow { margin: 0; }
.card h3 { margin: 0; font-size: 20px; letter-spacing: -.02em; }
.card .card-cat { font-family: var(--mono); font-size: 10px; color: var(--muted); letter-spacing: .05em; text-transform: uppercase; }
.card .card-tag { color: var(--muted); font-size: 14px; margin: 0; }
.card .card-price { font-family: var(--mono); font-size: 22px; font-weight: 600; margin: 6px 0 0; }
.card .card-price small { font-size: 12px; font-weight: 400; color: var(--muted); }
.card .card-meta { font-family: var(--mono); font-size: 10px; color: var(--muted); margin: 0; }
.card .card-empty { font-size: 13px; color: var(--muted); }
.card .card-cta { font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; color: var(--signal); margin-top: auto; }

/* Category tiles */
.cat-tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 18px; margin-top: 24px; }
.cat-tile {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; text-decoration: none; color: inherit;
}
.cat-tile:hover { border-color: var(--ink); }
.cat-tile h3 { margin: 0 0 6px; font-size: 19px; letter-spacing: -.02em; }
.cat-tile p { margin: 0; font-size: 13px; color: var(--muted); }
.cat-tile .count { font-family: var(--mono); font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }

/* Search */
.search-bar { display: flex; gap: 10px; margin-top: 18px; max-width: 560px; }
.search-bar input {
  flex: 1; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--card); color: var(--ink); font-size: 15px; padding: 14px 16px;
  font-family: var(--sans);
}
.search-bar button {
  border: 0; border-radius: var(--radius); background: var(--ink); color: var(--paper);
  font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: .05em;
  text-transform: uppercase; padding: 0 22px; cursor: pointer;
}
.search-hint { margin-top: 10px; font-size: 12px; color: var(--muted); }

/* Hero */
.hero { padding: 56px 0 8px; }
.hero h1 { font-size: clamp(36px, 6vw, 64px); letter-spacing: -.03em; margin: 12px 0 0; }
.hero .lede { color: var(--muted); font-size: 17px; max-width: 620px; margin: 14px 0 0; }

/* Stale + availability tags */
.tag-stale {
  display: inline-block; font-family: var(--mono); font-size: 9px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase;
  background: var(--soft); color: var(--muted);
  padding: 4px 10px; border-radius: 999px; margin-left: 8px;
}
.tag-out {
  display: inline-block; font-family: var(--mono); font-size: 9px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase;
  background: var(--signal-soft); color: var(--signal);
  padding: 4px 10px; border-radius: 999px; margin-left: 8px;
}
.tag-observed {
  display: inline-block; font-family: var(--mono); font-size: 9px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase;
  background: var(--warn-soft, #fff4e0); color: var(--warn, #9a6a00);
  padding: 4px 10px; border-radius: 999px; margin-left: 8px;
  border: 1px dashed currentColor;
}
.offer .diff-color { color: var(--signal); font-weight: 600; }
.stale-toggle {
  margin-top: 8px; border: 1px dashed var(--line, #e3e1d8); border-radius: 12px;
  padding: 8px 14px; background: rgba(0,0,0,.02);
}
.stale-toggle summary {
  cursor: pointer; font-family: var(--mono); font-size: 11px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase; opacity: .7; padding: 6px 0;
}
.stale-toggle .offer { opacity: .75; }

@media (max-width: 680px) {
  .hero { padding: 40px 0 4px; }
}