/* ============================================================
   ND Engine Parts — styles
   Layout: sticky top bar; catalog = filter column + results
   (page scrolls normally, table header sticks under the top bar).
   BRAND COLOURS: the :root block below (documented in the ND Colour Guide).
   ============================================================ */
/* ---------- ND colour system (see the ND Colour Guide) ----------
   Red is reserved for the logo, the main action and the + button.
   Charcoal carries the top bar and hero. Everything else is neutral steel grey. */
:root {
  --brand:          #1B1E23;  /* Charcoal: top bar, hero */
  --brand-ink:      #FFFFFF;  /* text on charcoal */
  --accent:         #D3121A;  /* ND Red (UI): main buttons, + button, counters */
  --accent-hover:   #AE0E15;
  --accent-ink:     #FFFFFF;
  --accent-on-brand:#FF5A5F;  /* red text placed on charcoal */
  --link:           #B80F16;  /* red text on white/grey */
  --logo-red:       #F5121B;  /* logo artwork only */
  --done-bg:        #1B1E23;  /* + button after the part is added */
  --done-ink:       #FFFFFF;
  --wa:             #178246;  /* WhatsApp actions only */
  --wa-ink:         #FFFFFF;
  --add-bg:    var(--accent);
  --add-hover: var(--accent-hover);
  --add-ink:   var(--accent-ink);

  --bg:       #F2F3F5;   /* Steel 50: page */
  --surface:  #FFFFFF;   /* cards, table, drawers */
  --surface-2:#F7F8F9;   /* table header, subtle fills */
  --ink:      #16181C;   /* main text */
  --muted:    #5E646E;   /* secondary text */
  --line:     #DDE0E4;
  --line-2:   #C9CDD3;
  --row-hover:#F6F7F8;
  --danger:   #B42318;
  --focus:    rgb(211 18 26 / .18);
  --shadow:   0 1px 2px rgb(16 18 22 / .06), 0 8px 24px rgb(16 18 22 / .08);

  --font-ui:   'Archivo', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius: 6px;
  --top-h: 60px;
  --maxw: 1320px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --brand:#0C0D10; --brand-ink:#F2F3F5; --accent:#E5242C; --accent-hover:#FF3D44; --accent-ink:#FFFFFF;
    --accent-on-brand:#FF6B70; --link:#FF6B70; --done-bg:#E8EAED; --done-ink:#121418; --wa:#178246; --wa-ink:#FFFFFF;
    --bg:#121418; --surface:#1A1D22; --surface-2:#20242A; --ink:#ECEEF1; --muted:#9AA1AC;
    --line:#2C3038; --line-2:#3A3F48; --row-hover:#22262C; --danger:#F97066; --focus:rgb(229 36 44 / .3);
    --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 8px 24px rgb(0 0 0 / .4);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --brand:#0C0D10; --brand-ink:#F2F3F5; --accent:#E5242C; --accent-hover:#FF3D44; --accent-ink:#FFFFFF;
  --accent-on-brand:#FF6B70; --link:#FF6B70; --done-bg:#E8EAED; --done-ink:#121418; --wa:#178246; --wa-ink:#FFFFFF;
  --bg:#121418; --surface:#1A1D22; --surface-2:#20242A; --ink:#ECEEF1; --muted:#9AA1AC;
  --line:#2C3038; --line-2:#3A3F48; --row-hover:#22262C; --danger:#F97066; --focus:rgb(229 36 44 / .3);
  --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 8px 24px rgb(0 0 0 / .4);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--top-h) + 12px); }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.5 var(--font-ui); font-variation-settings: 'wdth' 100;
}
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 60; background: var(--brand); }
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { margin: 0; line-height: 1.15; text-wrap: balance; font-stretch: 85%; font-variation-settings: 'wdth' 85; }
p { margin: 0; }
button, input, textarea, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--surface); padding: 8px 12px; }
.skip:focus { left: 16px; }
.ico { width: 18px; height: 18px; flex: none; }
.mono { font-family: var(--font-mono); }
.nw { white-space: nowrap; }

.wrap {
  max-width: var(--maxw); margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.section { padding-block: 40px; display: grid; gap: 20px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.section-head h2 { font-size: 22px; font-weight: 750; }
.eyebrow { font-size: 12px; font-weight: 650; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.lede { color: var(--muted); font-size: 16px; max-width: 58ch; }
.link-arrow { font-weight: 600; text-decoration: none; color: var(--link); }
.link-arrow::after { content: " →"; }
.kbd { display: inline-grid; place-items: center; min-width: 20px; height: 20px; padding: 0 4px; border: 1px solid var(--line-2); border-radius: 4px; font: 600 12px var(--font-mono); background: var(--surface); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 40px; padding: 0 14px; border-radius: var(--radius);
  border: 1px solid transparent; font-weight: 650; text-decoration: none; cursor: pointer;
  white-space: nowrap; transition: filter .15s, background .15s;
}
.btn:hover { filter: brightness(1.06); }
.btn-lg { min-height: 48px; padding: 0 20px; font-size: 16px; }
.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-accent:hover { background: var(--accent-hover); filter: none; }
.btn-wa { background: var(--wa); color: var(--wa-ink); }
.btn-ghost { background: var(--surface); border-color: var(--line-2); }
.btn.grow { flex: 1; }
.btn.icon-only { padding: 0; width: 44px; }
.btn-text { background: none; border: 0; padding: 4px 0; cursor: pointer; color: var(--link); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.btn-text.danger { color: var(--danger); }
.icon-btn { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); cursor: pointer; font-size: 18px; line-height: 1; }
.icon-btn:hover { background: var(--surface-2); }
.count { display: inline-grid; place-items: center; min-width: 22px; height: 22px; padding: 0 6px; border-radius: 11px; background: var(--accent); color: var(--accent-ink); font: 700 12px var(--font-mono); }

/* ---------- Top bar ---------- */
.topbar { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; background: var(--brand); color: var(--brand-ink); }
.topbar-in { height: var(--top-h); display: flex; align-items: center; gap: 24px; max-width: var(--maxw); margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 19px; letter-spacing: .01em; font-variation-settings: 'wdth' 75; text-transform: uppercase; }
.brand .logo-plate { display: inline-flex; align-items: center; height: 40px; padding: 6px 9px; background: #fff; border-radius: 5px; box-shadow: 0 1px 0 rgb(0 0 0 / .15); }
.brand .logo-plate img { height: 100%; width: auto; }
.brand .mark { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 4px; background: var(--accent); color: var(--accent-ink); font-size: 15px; font-variation-settings: 'wdth' 100; }
.mainnav { display: flex; gap: 4px; }
.mainnav a { text-decoration: none; padding: 8px 12px; border-radius: var(--radius); font-weight: 600; opacity: .82; }
.mainnav a:hover { opacity: 1; background: rgb(255 255 255 / .08); }
.mainnav a[aria-current="page"] { opacity: 1; box-shadow: inset 0 -2px 0 var(--accent); border-radius: 0; }
.topbar-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.btn-quote { background: rgb(255 255 255 / .1); color: var(--brand-ink); border-color: rgb(255 255 255 / .18); }
.btn-quote.bump { animation: bump .35s ease; }
@keyframes bump { 40% { transform: scale(1.08); } }

/* ---------- Hero ---------- */
.hero { background: var(--brand); color: var(--brand-ink); border-bottom: 4px solid var(--accent); }
.hero-in { display: grid; grid-template-columns: minmax(0, 1fr) 400px; gap: 48px; align-items: center; padding-block: 48px 44px; }
.hero-card { display: grid; gap: 10px; padding: 20px; border: 1px solid rgb(255 255 255 / .14); border-radius: var(--radius); background: rgb(255 255 255 / .05); }
.hero-card h2 { font-size: 18px; font-weight: 750; }
.hero-card p { color: rgb(255 255 255 / .72); font-size: 14px; }
.hero-card dl { margin: 4px 0; display: grid; grid-template-columns: max-content minmax(0, 1fr); border-top: 1px solid rgb(255 255 255 / .14); }
.hero-card dt, .hero-card dd { margin: 0; padding: 8px 0; border-bottom: 1px solid rgb(255 255 255 / .14); }
.hero-card dt { font-size: 11px; letter-spacing: .07em; text-transform: uppercase; color: rgb(255 255 255 / .6); padding-right: 16px; padding-top: 10px; }
.hero-card dd { font-weight: 600; font-size: 14px; white-space: pre-line; }
.hero-card .btn { justify-self: start; }
.hero h1 { font-size: clamp(28px, 4.2vw, 46px); font-weight: 800; max-width: 22ch; margin: 8px 0 12px; }
.hero .eyebrow { color: var(--accent-on-brand); }
.hero .lede { color: rgb(255 255 255 / .75); }
.hero-copy { min-width: 0; }
.hero-search { margin-top: 24px; display: flex; align-items: center; gap: 8px; background: var(--surface); color: var(--ink); border-radius: var(--radius); padding: 6px 6px 6px 14px; max-width: 640px; box-shadow: var(--shadow); }
.hero-search input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; font-size: 17px; height: 44px; }
.hero-search .ico { color: var(--muted); }
.hero-hint { margin-top: 10px; font-size: 13px; color: rgb(255 255 255 / .6); }
.cat-stats { display: flex; flex-wrap: wrap; margin: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.cat-stats div { flex: 1 1 0; min-width: 0; padding: 12px 18px; border-left: 1px solid var(--line); }
.cat-stats div:first-child { border-left: 0; }
.cat-stats dt { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.cat-stats dd { margin: 2px 0 0; font: 600 24px/1.1 var(--font-mono); font-variant-numeric: tabular-nums; color: var(--ink); }

/* ---------- Category grid ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.cat-card { display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 12px; align-items: center; padding: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; cursor: pointer; text-align: left; transition: border-color .15s, transform .15s; }
.cat-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.cat-all { grid-template-columns: minmax(0, 1fr) auto; background: var(--ink); border-color: var(--ink); color: var(--surface); }
.cat-card.cat-all small { color: var(--surface); opacity: .75; }
.cat-all .arrow { font-size: 22px; padding-right: 6px; }
.cat-all:hover { border-color: var(--accent); }
.section-tight { padding-bottom: 8px; }
.cat-thumb { width: 52px; height: 52px; border-radius: 4px; background: var(--surface-2); display: grid; place-items: center; color: var(--accent); overflow: hidden; }
.cat-thumb img { width: 100%; height: 100%; object-fit: cover; }
.cat-thumb svg { width: 34px; height: 34px; }
.cat-card b { display: block; font-size: 14px; line-height: 1.25; font-weight: 650; overflow-wrap: anywhere; }
.cat-card small { color: var(--muted); font: 500 12px var(--font-mono); }
.brand-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(128px, 1fr)); gap: 8px; }
.brand-chip { display: flex; justify-content: center; align-items: baseline; padding: 10px 14px; border: 1px solid var(--line-2); border-radius: 999px; background: var(--surface); font-weight: 650; font-size: 13px; letter-spacing: .04em; cursor: pointer; }
.brand-chip:hover { border-color: var(--accent); color: var(--link); }
.brand-chip small { color: var(--muted); font-family: var(--font-mono); margin-left: 4px; }

.band { background: var(--surface); border-block: 1px solid var(--line); }
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; counter-reset: s; }
.steps li { counter-increment: s; display: grid; gap: 6px; align-content: start; padding-top: 14px; border-top: 3px solid var(--ink); }
.steps li::before { content: counter(s); font: 600 13px var(--font-mono); color: var(--muted); }
.steps b { font-size: 17px; }
.steps span { color: var(--muted); }
.highlights { border-top: 1px solid var(--line); padding-top: 20px; margin-top: 4px; }
.highlights-in { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.highlights-in div { display: grid; gap: 4px; }
.highlights b { font-size: 16px; }
.highlights p { color: var(--muted); }

/* ---------- Catalog layout ---------- */
.catalog { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 24px; padding-block: 20px 40px; align-items: start; }
.filters { position: sticky; top: calc(var(--top-h) + env(safe-area-inset-top, 0px) + 16px); max-height: calc(100vh - var(--top-h) - 32px); overflow: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; display: grid; gap: 14px; align-content: start; }
.filters-head { display: flex; align-items: center; gap: 12px; }
.filters-head h2 { font-size: 17px; margin-right: auto; }
.fgroup { display: grid; gap: 6px; border-top: 1px solid var(--line); padding-top: 12px; }
.fgroup h3 { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-variation-settings: 'wdth' 100; }
.fgroup summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.fgroup summary::-webkit-details-marker { display: none; }
.fgroup summary::after { content: ""; width: 7px; height: 7px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(45deg) translateY(-2px); transition: transform .15s; flex: none; margin-right: 4px; }
.fgroup:not([open]) summary::after { transform: rotate(-45deg); }
.fgroup summary h3 { display: flex; align-items: center; gap: 6px; }
.fgroup summary .count { min-width: 18px; height: 18px; font-size: 11px; }
details.fgroup { display: block; }
details.fgroup > summary + * { margin-top: 8px; }
.more-in { display: flex; justify-content: center; align-items: center; gap: 18px; flex-wrap: wrap; }
@media (min-width: 1181px) {
  .catalog.filters-hidden { grid-template-columns: minmax(0, 1fr); }
  .catalog.filters-hidden .filters { display: none; }
}
.cat-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; }
.cat-list button { width: 100%; display: flex; gap: 8px; justify-content: space-between; align-items: baseline; text-align: left; padding: 6px 8px; border: 0; border-radius: 4px; background: none; cursor: pointer; font-size: 13.5px; line-height: 1.3; }
.cat-list button:hover { background: var(--surface-2); }
.cat-list button[aria-pressed="true"] { background: var(--ink); color: var(--surface); font-weight: 650; }
.cat-list small { font: 500 12px var(--font-mono); opacity: .7; flex: none; }
.checks { display: grid; gap: 2px; max-height: 240px; overflow: auto; }
.check { display: flex; align-items: center; gap: 8px; padding: 4px 2px; font-size: 13.5px; cursor: pointer; }
.check input { width: 16px; height: 16px; accent-color: var(--accent); flex: none; margin: 0; }
.check span { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.check small { font: 500 12px var(--font-mono); color: var(--muted); }

.results { min-width: 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; }
.toolbar { display: flex; gap: 8px; }
.search-box { flex: 1; min-width: 0; display: flex; align-items: center; gap: 10px; background: var(--surface); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 0 12px; }
.search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--focus); }
.search-box input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; height: 44px; font-size: 16px; }
.search-box .ico { color: var(--muted); }
.result-meta { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.result-meta h1 { font-size: 22px; font-weight: 750; }
.result-meta p { color: var(--muted); font-family: var(--font-mono); font-size: 13px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chips:empty { display: none; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 4px 6px 4px 10px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line-2); font-size: 13px; cursor: pointer; }
.chip::after { content: "×"; font-size: 15px; color: var(--muted); }

/* ---------- Table ---------- */
.table-wrap { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.parts { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 14px; }
.parts th { position: sticky; top: calc(var(--top-h) + env(safe-area-inset-top, 0px)); z-index: 2; background: var(--surface-2); text-align: left; font-size: 11.5px; letter-spacing: .07em; text-transform: uppercase; color: var(--muted); font-weight: 650; padding: 0; border-bottom: 1px solid var(--line-2); white-space: nowrap; }
.parts th:first-child { border-top-left-radius: var(--radius); }
.parts th:last-child { border-top-right-radius: var(--radius); }
.parts th button { all: unset; display: flex; align-items: center; gap: 4px; padding: 10px 12px; cursor: pointer; width: 100%; box-sizing: border-box; }
.parts th button:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.parts th[aria-sort="ascending"] button::after { content: "▲"; font-size: 9px; }
.parts th[aria-sort="descending"] button::after { content: "▼"; font-size: 9px; }
.parts th.num button { justify-content: flex-end; }
.parts td { padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.parts tbody tr { cursor: pointer; }
.parts tbody tr:hover td { background: var(--row-hover); }
.parts tbody tr:last-child td { border-bottom: 0; }
.parts .c-mpn { font-family: var(--font-mono); font-size: 13px; min-width: 110px; }
.parts td.attr { overflow-wrap: anywhere; min-width: 70px; max-width: 160px; }
.parts .c-mpn span { display: block; }
.parts .c-type { font-weight: 600; min-width: 140px; }
.parts .num { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.parts .c-add { width: 52px; padding: 5px 8px; text-align: right; }
.parts .c-cat { max-width: 180px; }
.parts .c-cat .badge { white-space: normal; line-height: 1.3; }
.muted { color: var(--muted); }
.ask { color: var(--muted); font-family: var(--font-ui); font-size: 13px; font-style: italic; }
.add-btn { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: var(--radius); border: 0; background: var(--add-bg); color: var(--add-ink); cursor: pointer; box-shadow: 0 1px 2px rgb(16 24 40 / .25); }
.add-btn:hover { background: var(--add-hover); }
.add-btn.on { background: var(--done-bg); color: var(--done-ink); }
.add-btn .ico { width: 16px; height: 16px; }
.badge { display: inline-block; padding: 2px 7px; border-radius: 3px; background: var(--surface-2); border: 1px solid var(--line); font-size: 11px; font-weight: 650; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.more-row td { text-align: center; padding: 14px; cursor: default; }
.empty { padding: 32px 20px; display: grid; gap: 8px; justify-items: start; max-width: 60ch; }
.footnote { font-size: 12.5px; color: var(--muted); }

/* ---------- Drawers ---------- */
.scrim { position: fixed; inset: 0; z-index: 70; background: rgb(10 14 20 / .45); }
.drawer { position: fixed; z-index: 80; top: 0; right: 0; bottom: 0; width: min(460px, 100%); background: var(--surface); box-shadow: var(--shadow); display: grid; grid-template-rows: auto minmax(0, 1fr) auto; padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); padding-right: env(safe-area-inset-right, 0px); animation: slide .2s ease; }
@keyframes slide { from { transform: translateX(24px); opacity: .4; } }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.drawer-head h2 { font-size: 19px; }
.drawer-body { overflow: auto; padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.drawer-body > * { flex: none; }
.drawer-foot { display: flex; gap: 8px; align-items: center; padding: 12px 16px; border-top: 1px solid var(--line); background: var(--surface-2); flex-wrap: wrap; }
.photo { margin: 0; aspect-ratio: 16 / 10; max-width: 100%; border-radius: var(--radius); background: var(--surface-2); border: 1px solid var(--line); display: grid; place-items: center; overflow: hidden; color: var(--accent); position: relative; }
.photo img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.photo svg { width: 42%; height: 42%; opacity: .85; }
.photo figcaption { position: absolute; left: 10px; bottom: 8px; font-size: 11.5px; color: var(--muted); }
.d-brand { font-size: 12px; font-weight: 700; letter-spacing: .08em; color: var(--muted); }
#dTitle { font-size: 24px; font-weight: 780; margin-top: -8px; }
.d-mpn { display: flex; flex-wrap: wrap; gap: 6px; }
.mpn-pill { display: inline-flex; align-items: center; gap: 8px; padding: 6px 8px 6px 10px; border: 1px solid var(--line-2); border-radius: var(--radius); font: 500 14px var(--font-mono); background: var(--surface-2); cursor: pointer; }
.mpn-pill .ico { width: 14px; height: 14px; color: var(--muted); }
.mpn-pill.none { cursor: default; color: var(--muted); font-family: var(--font-ui); font-style: italic; }
.spec { margin: 0; display: grid; grid-template-columns: max-content minmax(0, 1fr); border-top: 1px solid var(--line); }
.spec dt, .spec dd { margin: 0; padding: 8px 0; border-bottom: 1px solid var(--line); }
.spec dt { font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); padding-right: 16px; }
.spec dd { font-weight: 600; overflow-wrap: anywhere; }
.d-price { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.d-price b { font: 600 26px var(--font-mono); font-variant-numeric: tabular-nums; }
.d-price small { color: var(--muted); }
.d-related h3 { font-size: 13px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; font-variation-settings: 'wdth' 100; }
.d-related ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.d-related button { width: 100%; text-align: left; display: flex; justify-content: space-between; gap: 12px; padding: 8px 10px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); cursor: pointer; font-size: 13.5px; }
.d-related button:hover { border-color: var(--accent); }
.d-related .mono { color: var(--muted); font-size: 12.5px; }
.qty { display: flex; align-items: center; border: 1px solid var(--line-2); border-radius: var(--radius); background: var(--surface); }
.qty .icon-btn { border: 0; width: 36px; height: 38px; background: transparent; }
.qty input { width: 48px; text-align: center; border: 0; background: transparent; font: 600 15px var(--font-mono); -moz-appearance: textfield; appearance: textfield; }
.qty input::-webkit-outer-spin-button, .qty input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* Quote list */
.q-empty { display: grid; gap: 8px; justify-items: start; padding: 8px 0; }
.q-list { list-style: none; margin: 0; padding: 0; display: grid; }
.q-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.q-item .t { font-weight: 650; overflow-wrap: anywhere; }
.q-item .m { font: 500 12.5px var(--font-mono); color: var(--muted); overflow-wrap: anywhere; }
.q-item .ctrl { display: flex; align-items: center; gap: 8px; grid-row: span 2; }
.q-item .qty input { width: 40px; }
.q-item .rm { background: none; border: 0; color: var(--muted); cursor: pointer; padding: 6px; font-size: 18px; line-height: 1; }
.q-item .rm:hover { color: var(--danger); }
.q-form { display: grid; gap: 4px; padding-top: 4px; }
.q-form h3 { font-size: 15px; margin-bottom: 4px; }
.q-form label { font-size: 13px; font-weight: 600; margin-top: 6px; }
.q-form .opt { color: var(--muted); font-weight: 400; }
.q-form input, .q-form textarea { width: 100%; border: 1px solid var(--line-2); border-radius: var(--radius); background: var(--surface); padding: 9px 10px; font-size: 15px; }
.q-form input:focus, .q-form textarea:focus { outline: 0; border-color: var(--accent); box-shadow: 0 0 0 3px var(--focus); }
.q-form .invalid { border-color: var(--danger); }
.q-foot { display: grid; gap: 10px; }
.q-sum { font-size: 13px; color: var(--muted); }
.q-alt { display: flex; gap: 18px; flex-wrap: wrap; }

.toast { position: fixed; z-index: 90; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: var(--radius); font-weight: 600; box-shadow: var(--shadow); max-width: calc(100% - 32px); }

/* ---------- Contact ---------- */
.contact { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 48px; align-items: start; padding-block: 48px; }
.about { display: grid; gap: 12px; align-content: start; }
.about h1 { font-size: 34px; font-weight: 800; max-width: 16ch; }
.about-lead { font-size: 17px; color: var(--ink); max-width: 46ch; }
.about-facts { margin: 8px 0 0; display: grid; grid-template-columns: max-content minmax(0, 1fr); border-top: 2px solid var(--ink); }
.about-facts dt, .about-facts dd { margin: 0; padding: 12px 0; border-bottom: 1px solid var(--line); }
.about-facts dt { font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); padding-right: 24px; padding-top: 14px; }
.contact-col { display: grid; gap: 12px; align-content: start; }
.contact-col h2 { font-size: 17px; }
.contact-col .btn { justify-self: start; margin-top: 4px; }
.contact-list { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 18px; display: grid; grid-template-columns: max-content minmax(0, 1fr); }
.contact-list dt, .contact-list dd { margin: 0; padding: 12px 0; border-bottom: 1px solid var(--line); }
.contact-list dt { font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); padding-right: 20px; }
.contact-list dd { font-weight: 600; overflow-wrap: anywhere; white-space: pre-line; }
.contact-list dt:nth-last-child(2), .contact-list dd:last-child { border-bottom: 0; }

.footer { border-top: 1px solid var(--line); background: var(--surface); }
.footer-in { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 20px; font-size: 13px; color: var(--muted); }
.footer-in strong { color: var(--ink); margin-right: 8px; }

.only-sm { display: none; }

/* ---------- Tablet ---------- */
@media (max-width: 1180px) {
  .catalog { grid-template-columns: minmax(0, 1fr); }
  .only-sm { display: inline-flex; }
  .filters { position: fixed; z-index: 80; top: 0; left: 0; bottom: 0; width: min(340px, 88%); max-height: none; border-radius: 0; border: 0; box-shadow: var(--shadow);
    padding-top: calc(14px + env(safe-area-inset-top, 0px)); padding-left: max(14px, env(safe-area-inset-left, 0px)); transform: translateX(-105%); transition: transform .2s ease; }
  .filters.open { transform: none; }
  .hero-in { grid-template-columns: minmax(0, 1fr); align-items: start; gap: 28px; }
  .contact { grid-template-columns: minmax(0, 1fr); gap: 32px; }
}

/* ---------- Phone: rows become cards ---------- */
@media (max-width: 800px) {
  :root { --top-h: 56px; }
  .hide-sm { display: none; }
  .mainnav { display: none; }
  .brand { font-size: 16px; }
  .brand .logo-plate { height: 36px; padding: 3px 6px; }
  .hero-in { padding-block: 32px 28px; }
  .cat-stats div { padding: 10px 14px; }
  .cat-stats dd { font-size: 20px; }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .parts thead { display: none; }
  .parts, .parts tbody { display: block; }
  .parts tbody tr { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px 12px; padding: 12px; border-bottom: 1px solid var(--line); }
  .parts tbody tr:last-child { border-bottom: 0; }
  .parts td { display: block; padding: 0; border: 0; }
  .parts tbody tr:hover td { background: none; }
  .parts td[data-k="brand"] { grid-column: 1; order: -2; font-size: 12px; letter-spacing: .06em; color: var(--muted); font-weight: 650; }
  .parts td[data-k="type"] { grid-column: 1; order: -1; font-size: 15px; }
  .parts td[data-k="mpn"] { grid-column: 1; white-space: normal; }
  .parts td[data-k="mpn"] span { display: inline; }
  .parts td[data-k="mpn"] span + span::before { content: ", "; }
  .parts td.attr { grid-column: 1; font-size: 13px; color: var(--muted); }
  .parts td.attr::before { content: attr(data-label) ": "; text-transform: uppercase; font-size: 11px; letter-spacing: .05em; }
  .parts td.attr:empty { display: none; }
  .parts td.num { grid-column: 2; grid-row: 1 / span 2; align-self: start; }
  .parts td.c-add { grid-column: 2; grid-row: 3 / span 4; align-self: end; width: auto; padding: 0; }
  .parts td.c-cat { grid-column: 1; }
  .more-row { display: block !important; }
  .catalog { padding-block: 12px 32px; gap: 12px; }
}
@media (max-width: 420px) {
  .hide-xs { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}