/* =========================================================
   河北诺拓进出口有限公司
   Design system — "Technical Export Catalogue"
   Aesthetic: industrial spec-sheet / engineering drawing
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  font-synthesis-weight: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, figure, blockquote { margin: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection { background: var(--accent); color: #fff; }

/* ---------- 2. Tokens ---------- */
:root {
  /* surfaces */
  --paper:        #F4F1EA;
  --paper-2:      #EAE5DA;
  --paper-3:      #DED8CA;
  --paper-card:   #FBFAF6;
  --blueprint:    #10283C;
  --blueprint-2:  #0A1B29;

  /* ink */
  --ink:          #15181C;
  --ink-70:       #454B52;
  --ink-50:       #757C84;
  --ink-35:       #A2A9B0;

  /* lines */
  --line:         rgba(21, 24, 28, .14);
  --line-soft:    rgba(21, 24, 28, .08);
  --line-invert:  rgba(255, 255, 255, .18);

  /* accents */
  --accent:       #DC4A12;
  --accent-deep:  #B33A0B;
  --accent-soft:  #F7DCCF;
  --steel:        #5C6A78;
  --steel-soft:   #C3CBD3;
  --sand:         #C9A227;

  /* type */
  --font-display: "Archivo", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body:    "Archivo", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-cjk:     "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --fs-body:      clamp(15px, .35vw + 14px, 16.5px);
  --fs-eyebrow:   clamp(11px, .18vw + 10.5px, 12px);
  --fs-small:     clamp(13px, .2vw + 12.4px, 14px);
  --fs-lead:      clamp(16px, .6vw + 14.6px, 19.5px);
  --fs-h3:        clamp(20px, 1vw + 17px, 26px);
  --fs-h2:        clamp(30px, 3.2vw + 20px, 58px);
  --fs-h1:        clamp(40px, 6vw + 14px, 92px);
  --fs-mega:      clamp(64px, 13vw, 190px);

  /* space */
  --gut:          clamp(20px, 4.2vw, 68px);
  --shell:        1400px;
  --sec-y:        clamp(72px, 9vw, 152px);

  /* motion */
  --ease-out-quart: cubic-bezier(.165, .84, .44, 1);
  --ease-out-expo:  cubic-bezier(.16, 1, .3, 1);
  --dur: .62s;
}

/* ---------- 3. Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.025em;
  text-wrap: balance;
}
h1 { font-size: var(--fs-h1); letter-spacing: -.038em; }
h2 { font-size: var(--fs-h2); letter-spacing: -.032em; }
h3 { font-size: var(--fs-h3); line-height: 1.25; letter-spacing: -.015em; }
p  { text-wrap: pretty; }

.lead {
  font-size: var(--fs-lead);
  line-height: 1.72;
  color: var(--ink-70);
  max-width: 62ch;
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.cjk { font-family: var(--font-cjk); }

/* section index eyebrow :  / 03 — PRODUCTS */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}
.eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  background: currentColor;
  flex: none;
}
.eyebrow--plain::before { display: none; }

/* ---------- 4. Layout ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gut);
}
.section { padding-block: var(--sec-y); position: relative; }
.section--tight { padding-block: clamp(52px, 6vw, 96px); }

/* offset in-page anchors so the sticky header never covers a heading */
.section[id],
.pagehero[id],
article[id] { scroll-margin-top: 104px; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 88px);
}
@media (min-width: 900px) {
  .split--aside { grid-template-columns: minmax(260px, .78fr) minmax(0, 1.42fr); }
  .split--even  { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

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

/* ---------- 5. Header ---------- */
.topbar {
  background: var(--blueprint-2);
  color: rgba(255, 255, 255, .72);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .07em;
}
.topbar__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 38px;
  padding-block: 6px;
  flex-wrap: wrap;
}
.topbar__list { display: flex; gap: 26px; flex-wrap: wrap; }
.topbar__item { display: flex; align-items: center; gap: 8px; }
.topbar__item svg { width: 13px; height: 13px; opacity: .55; flex: none; }
.topbar__tag {
  color: var(--accent-soft);
  border: 1px solid rgba(220, 74, 18, .5);
  padding: 2px 9px;
  border-radius: 100px;
  letter-spacing: .12em;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(244, 241, 234, .86);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.site-header.is-stuck {
  border-bottom-color: var(--line);
  background: rgba(244, 241, 234, .95);
}
.header__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: clamp(66px, 7vw, 86px);
}

.brand { display: flex; align-items: center; gap: 13px; }
.brand__mark {
  width: 42px; height: 42px;
  flex: none;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--paper);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
}
.brand__mark::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 4px;
  background: var(--accent);
}
.brand__mark span {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: -.04em;
  line-height: 1;
}
.brand__text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.brand__cn {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: clamp(15px, 1.2vw, 18px);
  letter-spacing: .01em;
  line-height: 1.15;
  white-space: nowrap;
}
.brand__en {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: .17em;
  color: var(--ink-50);
  text-transform: uppercase;
  white-space: nowrap;
}

.nav { display: none; }
@media (min-width: 1080px) {
  .nav { display: flex; align-items: center; gap: clamp(6px, 1.4vw, 22px); }
}
.nav__link {
  position: relative;
  font-family: var(--font-cjk);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .02em;
  padding: 10px 4px;
  color: var(--ink-70);
  transition: color .25s;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 4px; right: 4px; bottom: 4px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .42s var(--ease-out-quart);
}
.nav__link:hover { color: var(--ink); }
.nav__link:hover::after,
.nav__link[aria-current="page"]::after { transform: scaleX(1); }
.nav__link[aria-current="page"] { color: var(--ink); }

.header__cta { display: none; }
@media (min-width: 1080px) { .header__cta { display: inline-flex; } }

/* burger */
.burger {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 3px;
  cursor: pointer;
}
@media (min-width: 1080px) { .burger { display: none; } }
.burger span {
  display: block;
  width: 18px; height: 2px;
  background: var(--ink);
  position: relative;
}
.burger span::before,
.burger span::after {
  content: "";
  position: absolute;
  left: 0; width: 18px; height: 2px;
  background: var(--ink);
  transition: transform .35s var(--ease-out-quart);
}
.burger span::before { top: -6px; }
.burger span::after  { top: 6px; }

.drawer {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: var(--blueprint-2);
  color: var(--paper);
  padding: 26px var(--gut) 44px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  clip-path: inset(0 0 100% 0);
  visibility: hidden;
  transition: clip-path .55s var(--ease-out-expo), visibility 0s linear .55s;
  overflow-y: auto;
}
.drawer[data-open="true"] {
  clip-path: inset(0 0 0 0);
  visibility: visible;
  transition: clip-path .55s var(--ease-out-expo), visibility 0s linear 0s;
}
.drawer__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 22px;
}
.drawer__close {
  width: 44px; height: 44px;
  border: 1px solid var(--line-invert);
  background: transparent;
  color: var(--paper);
  border-radius: 3px;
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
}
.drawer__link {
  font-family: var(--font-cjk);
  font-size: clamp(28px, 8vw, 44px);
  font-weight: 900;
  letter-spacing: -.01em;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-invert);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}
.drawer__link em {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--accent-soft);
}
.drawer__meta {
  margin-top: auto;
  padding-top: 34px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .55);
  line-height: 2;
}

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-cjk);
  font-weight: 700;
  font-size: 14.5px;
  letter-spacing: .04em;
  padding: 14px 26px;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: color .3s var(--ease-out-quart), border-color .3s;
  white-space: nowrap;
}
.btn svg { width: 15px; height: 15px; flex: none; }
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: currentColor;
  transform: translateY(101%);
  transition: transform .46s var(--ease-out-expo);
}
.btn:hover::before { transform: translateY(0); }

.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { color: var(--accent); }
.btn--primary::before { background: var(--paper); }
.btn--primary:hover { border-color: var(--accent); }

.btn--ghost { border-color: var(--line); color: var(--ink); }
.btn--ghost::before { background: var(--ink); }
.btn--ghost:hover { color: var(--paper); border-color: var(--ink); }

.btn--light { border-color: var(--line-invert); color: var(--paper); }
.btn--light::before { background: var(--paper); }
.btn--light:hover { color: var(--blueprint); border-color: var(--paper); }

.btn--sm { padding: 11px 20px; font-size: 13.5px; }

/* link with arrow */
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-cjk);
  font-weight: 700;
  font-size: 14.5px;
  color: var(--accent);
  border-bottom: 1px solid rgba(220, 74, 18, .3);
  padding-bottom: 3px;
  transition: gap .3s var(--ease-out-quart), border-color .3s;
}
.arrow-link:hover { gap: 15px; border-bottom-color: var(--accent); }
.arrow-link svg { width: 15px; height: 15px; }

/* ---------- 7. Hero ---------- */
.hero {
  position: relative;
  background: var(--blueprint);
  color: var(--paper);
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(120% 90% at 78% 12%, #000 12%, transparent 78%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(80% 60% at 12% 100%, rgba(220, 74, 18, .2), transparent 62%);
}
.hero__in {
  display: grid;
  gap: clamp(40px, 5vw, 64px);
  padding-block: clamp(58px, 8vw, 116px) clamp(56px, 7vw, 104px);
  align-items: center;
}
@media (min-width: 1000px) {
  .hero__in { grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr); }
}
.hero__eyebrow { color: var(--accent-soft); }
.hero__eyebrow::before { background: var(--accent); }
.hero__title {
  margin-top: 22px;
  font-size: var(--fs-h1);
  color: #fff;
}
.hero__title .u {
  position: relative;
  display: inline-block;
  color: var(--accent-soft);
}
.hero__title .u::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: .07em;
  height: .075em;
  background: var(--accent);
}
.hero__sub {
  margin-top: 26px;
  font-size: var(--fs-lead);
  line-height: 1.75;
  color: rgba(255, 255, 255, .74);
  max-width: 54ch;
}
.hero__actions {
  margin-top: 38px;
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
}
.hero__chips {
  margin-top: 42px;
  padding-top: 26px;
  border-top: 1px solid var(--line-invert);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .58);
}
.hero__chips li { display: flex; align-items: center; gap: 9px; }
.hero__chips li::before {
  content: "";
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
  flex: none;
}

/* hero technical drawing */
.hero__figure {
  position: relative;
  display: grid;
  place-items: center;
}
.hero__figure svg { width: 100%; max-width: 520px; height: auto; }
.hero__figure .draw-line {
  stroke: rgba(255, 255, 255, .42);
  fill: none;
  stroke-width: 1.1;
  vector-effect: non-scaling-stroke;
}
.hero__figure .draw-line--bold { stroke: rgba(255, 255, 255, .8); stroke-width: 1.6; }
.hero__figure .draw-accent { stroke: var(--accent); fill: none; stroke-width: 1.6; }
.hero__figure .draw-fill { fill: rgba(255, 255, 255, .06); stroke: none; }
.hero__figure .draw-fill-accent { fill: rgba(220, 74, 18, .22); stroke: none; }
.hero__figure .draw-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  fill: rgba(255, 255, 255, .62);
  letter-spacing: .1em;
}
.hero__figure .draw-label--accent { fill: var(--accent-soft); }

/* ---------- 8. Marquee ---------- */
.marquee {
  background: var(--ink);
  color: var(--paper);
  border-block: 1px solid var(--line-invert);
  overflow: hidden;
  padding-block: 15px;
}
.marquee__track {
  display: flex;
  gap: 0;
  width: max-content;
  animation: slide 46s linear infinite;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item {
  display: flex;
  align-items: center;
  gap: 22px;
  padding-inline: 22px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .78);
  white-space: nowrap;
}
.marquee__item::after {
  content: "";
  width: 7px; height: 7px;
  border: 1px solid var(--accent);
  transform: rotate(45deg);
  flex: none;
}
@keyframes slide {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- 9. Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
@media (min-width: 780px) { .stats { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.stat {
  padding: clamp(24px, 3vw, 40px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper-card);
}
.stat__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 4.4vw, 58px);
  line-height: .95;
  letter-spacing: -.045em;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.stat__num i {
  font-style: normal;
  font-size: .42em;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: normal;
}
.stat__label {
  margin-top: 14px;
  font-family: var(--font-cjk);
  font-weight: 700;
  font-size: 14.5px;
}
.stat__note {
  margin-top: 5px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--ink-50);
}

/* ---------- 10. Section head ---------- */
.sec-head {
  display: grid;
  gap: 20px;
  margin-bottom: clamp(38px, 4.6vw, 66px);
}
@media (min-width: 900px) {
  .sec-head {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: end;
  }
  .sec-head__aside { justify-self: end; text-align: right; max-width: 46ch; }
}
.sec-head__title { margin-top: 18px; }
.sec-head__desc {
  margin-top: 18px;
  color: var(--ink-70);
  max-width: 60ch;
}
.sec-head--dark .sec-head__desc { color: rgba(255, 255, 255, .68); }
.sec-head--dark h2 { color: #fff; }

/* ---------- 11. Category grid ---------- */
.cats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--line);
}
@media (min-width: 700px)  { .cats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1100px) { .cats { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

.cat {
  position: relative;
  padding: clamp(26px, 2.6vw, 40px);
  border-bottom: 1px solid var(--line);
  background: var(--paper-card);
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 236px;
  overflow: hidden;
  transition: background .4s var(--ease-out-quart), color .4s;
}
@media (min-width: 700px) { .cat { border-right: 1px solid var(--line); } }
.cat::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--blueprint);
  transform: translateY(100%);
  transition: transform .5s var(--ease-out-expo);
  z-index: 0;
}
.cat > * { position: relative; z-index: 1; }
.cat__icon {
  width: 52px; height: 52px;
  color: var(--steel);
  transition: color .4s;
}
.cat__icon svg { width: 100%; height: 100%; }
.cat__idx {
  position: absolute;
  top: clamp(22px, 2.4vw, 34px);
  right: clamp(22px, 2.4vw, 34px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ink-35);
  z-index: 1;
  transition: color .4s;
}
.cat__title {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: clamp(17px, 1.25vw, 20px);
  letter-spacing: -.01em;
  margin-top: auto;
}
.cat__en {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-50);
  transition: color .4s;
}
.cat__desc {
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--ink-70);
  transition: color .4s;
}
.cat__more {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .35s .1s, transform .45s var(--ease-out-quart) .1s;
}
.cat__more svg { width: 14px; height: 14px; }

.cat:hover { color: var(--paper); }
.cat:hover::before { transform: translateY(0); }
.cat:hover .cat__icon { color: var(--accent); }
.cat:hover .cat__idx { color: rgba(255, 255, 255, .4); }
.cat:hover .cat__en { color: rgba(255, 255, 255, .55); }
.cat:hover .cat__desc { color: rgba(255, 255, 255, .72); }
.cat:hover .cat__more { opacity: 1; transform: translateY(0); }

/* ---------- 12. Featured products ---------- */
.feat-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
@media (min-width: 700px)  { .feat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1140px) { .feat-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

.feat {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper-card);
  padding: clamp(20px, 2.1vw, 28px);
  display: flex;
  flex-direction: column;
  min-height: 372px;
  transition: background .4s var(--ease-out-quart);
}
.feat:hover { background: #fff; }

.feat__fig {
  height: 164px;
  display: grid;
  place-items: center;
  background: var(--paper-2);
  border: 1px solid var(--line-soft);
  margin-bottom: 22px;
  position: relative;
  overflow: hidden;
}
.feat__fig::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 22px 22px;
}
.feat__fig svg {
  width: 118px;
  height: 118px;
  color: var(--steel);
  position: relative;
  transition: color .4s, transform .55s var(--ease-out-quart);
}
.feat:hover .feat__fig svg { color: var(--accent); transform: scale(1.07); }

.feat__code {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--ink-50);
  text-transform: uppercase;
}
.feat__title {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: 16.5px;
  line-height: 1.42;
  letter-spacing: -.01em;
  margin-top: 9px;
}
.feat__spec {
  margin-top: 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.75;
  letter-spacing: .01em;
  color: var(--ink-70);
}
.feat__cta { margin-top: auto; padding-top: 22px; }
.feat__cta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-cjk);
  font-weight: 700;
  font-size: 13.5px;
  color: var(--accent);
  transition: gap .3s var(--ease-out-quart);
}
.feat:hover .feat__cta span { gap: 14px; }
.feat__cta svg { width: 14px; height: 14px; }

/* ---------- 13. Advantages (numbered rows) ---------- */
.adv { border-top: 1px solid var(--line); }
.adv__row {
  display: grid;
  gap: 14px;
  padding-block: clamp(26px, 3vw, 42px);
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: padding-inline .45s var(--ease-out-quart);
}
@media (min-width: 860px) {
  .adv__row {
    grid-template-columns: 74px minmax(0, .92fr) minmax(0, 1.35fr);
    gap: 32px;
    align-items: start;
  }
}
.adv__row::after {
  content: "";
  position: absolute;
  left: 0; bottom: -1px;
  height: 2px; width: 0;
  background: var(--accent);
  transition: width .55s var(--ease-out-expo);
}
.adv__row:hover::after { width: 100%; }
.adv__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--accent);
  padding-top: 6px;
}
.adv__title {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: clamp(18px, 1.5vw, 23px);
  letter-spacing: -.012em;
}
.adv__body { color: var(--ink-70); font-size: 15px; line-height: 1.78; }

/* ---------- 13. About block ---------- */
.about-block { position: relative; }
.about-block__body {
  column-gap: clamp(30px, 4vw, 56px);
  color: var(--ink-70);
  line-height: 1.85;
}
.about-block__body p + p { margin-top: 1.15em; }
.about-block__body strong { color: var(--ink); font-weight: 700; }
@media (min-width: 1024px) {
  .about-block__body--cols { column-count: 2; }
}

.pullquote {
  border-left: 2px solid var(--accent);
  padding: 4px 0 4px 24px;
  font-family: var(--font-cjk);
  font-weight: 700;
  font-size: clamp(17px, 1.5vw, 22px);
  line-height: 1.6;
  color: var(--ink);
  letter-spacing: -.01em;
}

/* fact list */
.facts { display: grid; gap: 0; border-top: 1px solid var(--line); }
.facts__row {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: 18px;
  padding-block: 15px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14.5px;
}
.facts__k {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-50);
  padding-top: 3px;
}
.facts__v { font-family: var(--font-cjk); font-weight: 500; }

/* ---------- 14. Dark band ---------- */
.band-dark {
  background: var(--blueprint);
  color: var(--paper);
  position: relative;
  overflow: hidden;
}
.band-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 52px 52px;
  pointer-events: none;
}
.band-dark .lead,
.band-dark p { color: rgba(255, 255, 255, .72); }
.band-dark h2, .band-dark h3 { color: #fff; }
.band-dark .eyebrow { color: var(--accent-soft); }

/* market regions */
.regions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-invert);
  border-left: 1px solid var(--line-invert);
}
@media (min-width: 860px) { .regions { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.region {
  padding: clamp(22px, 2.4vw, 32px);
  border-right: 1px solid var(--line-invert);
  border-bottom: 1px solid var(--line-invert);
  min-height: 168px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  transition: background .4s var(--ease-out-quart);
}
.region:hover { background: rgba(255, 255, 255, .05); }
.region__cn {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: clamp(17px, 1.4vw, 21px);
  color: #fff;
}
.region__en {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .48);
  margin-top: 7px;
}
.region__code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--accent-soft);
}

/* ---------- 15. News ---------- */
.news { border-top: 1px solid var(--line); }
.news__item {
  display: grid;
  gap: 12px;
  padding-block: clamp(22px, 2.6vw, 34px);
  border-bottom: 1px solid var(--line);
  transition: background .35s;
}
@media (min-width: 860px) {
  .news__item {
    grid-template-columns: 132px minmax(0, 1.15fr) minmax(0, 1.35fr) 40px;
    gap: 30px;
    align-items: center;
  }
}
.news__item:hover { background: var(--paper-card); }
.news__date {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--ink-50);
}
.news__date b { color: var(--ink); font-size: 15px; display: block; letter-spacing: .02em; }
.news__title {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: clamp(16px, 1.3vw, 19.5px);
  line-height: 1.45;
  letter-spacing: -.01em;
}
.news__excerpt { font-size: 13.5px; line-height: 1.72; color: var(--ink-70); }
.news__arrow {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink-50);
  justify-self: end;
  transition: background .35s, color .35s, border-color .35s, transform .45s var(--ease-out-quart);
}
.news__item:hover .news__arrow {
  background: var(--accent); border-color: var(--accent);
  color: #fff; transform: rotate(-45deg);
}
.news__arrow svg { width: 15px; height: 15px; }

/* ---------- 16. CTA ---------- */
.cta {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.cta__in {
  display: grid;
  gap: clamp(34px, 4vw, 60px);
  align-items: center;
}
@media (min-width: 900px) { .cta__in { grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); } }
.cta__title { font-size: clamp(28px, 3.4vw, 50px); letter-spacing: -.03em; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- 17. Footer ---------- */
.site-footer {
  background: var(--blueprint-2);
  color: rgba(255, 255, 255, .66);
  padding-block: clamp(48px, 6vw, 84px) 0;
}
.footer__grid {
  display: grid;
  gap: clamp(30px, 3.4vw, 52px);
}
@media (min-width: 860px) { .footer__grid { grid-template-columns: 1.5fr 1fr 1fr 1.2fr; } }
.site-footer h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: 20px;
  font-weight: 600;
}
.footer__list { display: grid; gap: 11px; font-size: 14px; }
.footer__list a { transition: color .25s, padding-left .3s var(--ease-out-quart); }
.footer__list a:hover { color: #fff; padding-left: 5px; }
.footer__brand .brand__cn { color: #fff; }
.footer__brand .brand__en { color: rgba(255, 255, 255, .45); }
.footer__brand .brand__mark { background: var(--accent); color: #fff; }
.footer__brand .brand__mark::after { background: var(--ink); }
.footer__about { margin-top: 20px; font-size: 13.5px; line-height: 1.8; max-width: 42ch; color: rgba(255, 255, 255, .55); }
.footer__bottom {
  margin-top: clamp(40px, 4.6vw, 66px);
  border-top: 1px solid var(--line-invert);
  padding-block: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .42);
}

/* ---------- 18. Page hero (inner pages) ---------- */
.pagehero {
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.pagehero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(21, 24, 28, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 24, 28, .05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: linear-gradient(120deg, transparent 30%, #000 100%);
  pointer-events: none;
}
.pagehero__in {
  padding-block: clamp(44px, 5.4vw, 88px) clamp(38px, 4.4vw, 68px);
  position: relative;
}
.crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin-bottom: 24px;
}
.crumbs a:hover { color: var(--accent); }
.crumbs span { opacity: .45; }
.pagehero h1 { max-width: 22ch; }
.pagehero__sub {
  margin-top: 22px;
  max-width: 64ch;
  font-size: var(--fs-lead);
  color: var(--ink-70);
  line-height: 1.72;
}

/* big outline word */
.outline-word {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-mega);
  line-height: .8;
  letter-spacing: -.05em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(21, 24, 28, .14);
  position: absolute;
  right: -2%;
  bottom: -6%;
  z-index: 0;
  pointer-events: none;
  user-select: none;
  text-transform: uppercase;
}

/* ---------- 19. Spec table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--paper-card); }
table.spec {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  font-size: 14px;
}
table.spec th,
table.spec td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}
table.spec thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-50);
  font-weight: 600;
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
table.spec tbody tr:last-child td { border-bottom: 0; }
table.spec tbody tr:hover { background: rgba(220, 74, 18, .04); }
table.spec td:first-child { font-family: var(--font-cjk); font-weight: 700; white-space: nowrap; }
table.spec td .mono-val { font-family: var(--font-mono); font-size: 13px; letter-spacing: .02em; }

/* ---------- 20. Product detail rows ---------- */
.prod {
  padding-block: clamp(40px, 5vw, 76px);
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: clamp(26px, 3.4vw, 54px);
  scroll-margin-top: 110px;
}
@media (min-width: 940px) {
  .prod { grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); align-items: start; }
}
.prod__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--accent);
}
.prod__title {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: clamp(22px, 2.1vw, 34px);
  letter-spacing: -.02em;
  line-height: 1.24;
  margin-top: 14px;
}
.prod__en {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin-top: 12px;
}
.prod__desc { margin-top: 22px; color: var(--ink-70); line-height: 1.82; }
.taglist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}
.tag {
  font-family: var(--font-cjk);
  font-size: 12.5px;
  font-weight: 700;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: 100px;
  color: var(--ink-70);
  background: var(--paper-card);
}

/* ---------- 21. Process steps ---------- */
.steps {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-invert);
}
@media (min-width: 760px) { .steps { grid-template-columns: repeat(4, minmax(0, 1fr)); border-left: 1px solid var(--line-invert); } }
.step {
  padding: clamp(24px, 2.6vw, 34px);
  border-bottom: 1px solid var(--line-invert);
  position: relative;
}
@media (min-width: 760px) { .step { border-right: 1px solid var(--line-invert); } }
.step__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--accent-soft);
}
.step__title {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: 17.5px;
  color: #fff;
  margin-top: 44px;
}
.step__desc { margin-top: 12px; font-size: 13.5px; line-height: 1.72; color: rgba(255, 255, 255, .64); }

/* ---------- 22. Cert grid ---------- */
.certs { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(148px, 1fr)); }
.cert {
  border: 1px solid var(--line);
  background: var(--paper-card);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 118px;
  justify-content: space-between;
}
.cert__k {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  letter-spacing: -.03em;
}
.cert__v { font-size: 12.5px; color: var(--ink-50); line-height: 1.55; }

/* ---------- 23. Contact ---------- */
.contact-grid {
  display: grid;
  gap: clamp(34px, 4vw, 68px);
}
@media (min-width: 940px) { .contact-grid { grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); } }

.form { display: grid; gap: 18px; }
.form__row { display: grid; gap: 18px; }
@media (min-width: 620px) { .form__row--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.field { display: grid; gap: 8px; }
.field label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-50);
}
.field label .req { color: var(--accent); }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 15px;
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: 15px;
  font-family: var(--font-cjk);
  transition: border-color .25s, background .25s;
}
.field textarea { min-height: 132px; resize: vertical; line-height: 1.7; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
}
.field input::placeholder,
.field textarea::placeholder { color: var(--ink-35); }
.form__note { font-size: 12.5px; color: var(--ink-50); line-height: 1.65; }
.form__msg {
  font-family: var(--font-cjk);
  font-size: 14px;
  font-weight: 700;
  padding: 13px 16px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  color: var(--accent-deep);
  display: none;
}
.form__msg[data-show="true"] { display: block; }

.contact-card {
  border: 1px solid var(--line);
  background: var(--paper-card);
  padding: clamp(24px, 2.6vw, 34px);
}
.contact-lines { display: grid; gap: 0; margin-top: 6px; }
.contact-line {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  padding-block: 17px;
  border-bottom: 1px solid var(--line-soft);
  align-items: start;
}
.contact-line:last-child { border-bottom: 0; }
.contact-line svg { width: 18px; height: 18px; color: var(--accent); margin-top: 3px; }
.contact-line__k {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin-bottom: 5px;
}
.contact-line__v { font-family: var(--font-cjk); font-weight: 700; font-size: 15px; line-height: 1.6; }
.contact-line__v small { display: block; font-weight: 400; font-size: 12.5px; color: var(--ink-50); margin-top: 4px; }

/* ---------- 24. Reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--dur) var(--ease-out-quart), transform var(--dur) var(--ease-out-expo);
}
[data-reveal].is-in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: .09s; }
[data-reveal][data-delay="2"] { transition-delay: .18s; }
[data-reveal][data-delay="3"] { transition-delay: .27s; }
[data-reveal][data-delay="4"] { transition-delay: .36s; }

/* ---------- 26. Testing instrument catalogue ---------- */
.catblock {
  padding-block: clamp(48px, 5.4vw, 84px);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 104px;
}
.catblock:last-of-type { border-bottom: 0; }

.catblock__head {
  display: grid;
  gap: 26px;
  margin-bottom: clamp(28px, 3vw, 44px);
}
@media (min-width: 900px) {
  .catblock__head { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); align-items: center; }
}
.catblock__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--accent);
  text-transform: uppercase;
}
.catblock__title {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: clamp(22px, 2.2vw, 33px);
  letter-spacing: -.02em;
  line-height: 1.2;
  margin-top: 12px;
}
.catblock__en {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin-top: 11px;
}
.catblock__desc {
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--ink-70);
}
.catblock__fig {
  position: relative;
  height: clamp(150px, 15vw, 190px);
  display: grid;
  place-items: center;
  background: var(--paper-2);
  border: 1px solid var(--line);
  overflow: hidden;
}
.catblock__fig::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 22px 22px;
}
.catblock__fig svg {
  width: clamp(96px, 10vw, 124px);
  height: auto;
  color: var(--steel);
  position: relative;
  transition: color .45s, transform .55s var(--ease-out-quart);
}
.catblock:hover .catblock__fig svg { color: var(--accent); transform: scale(1.05); }
.catblock__count {
  position: absolute;
  right: 12px;
  bottom: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--ink-35);
}

/* product tiles */
.tp-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 268px), 1fr));
}
.tp {
  background: var(--paper-card);
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  transition: background .35s var(--ease-out-quart);
}
.tp:hover { background: #fff; }
.tp__no {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--ink-35);
}
.tp__name {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: 15.5px;
  line-height: 1.45;
  letter-spacing: -.01em;
  margin-top: 9px;
}
.tp__std {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .07em;
  color: var(--accent);
  margin-top: 11px;
  line-height: 1.6;
}
.tp__desc {
  font-size: 13px;
  line-height: 1.72;
  color: var(--ink-70);
  margin-top: 10px;
}
.tp--link .tp__name { color: var(--accent); }

/* detail sheet */
.spec-detail {
  border: 1px solid var(--line);
  background: var(--paper-card);
  margin-top: clamp(24px, 2.6vw, 38px);
  scroll-margin-top: 118px;
}
.spec-detail__head {
  background: var(--blueprint);
  color: var(--paper);
  padding: clamp(18px, 2vw, 26px) clamp(20px, 2.2vw, 30px);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
}
.spec-detail__head h4 {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: clamp(17px, 1.4vw, 21px);
  color: #fff;
  letter-spacing: -.01em;
}
.spec-detail__head span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--accent-soft);
  text-transform: uppercase;
}
.spec-detail__body { padding: clamp(20px, 2.2vw, 32px); }
.spec-detail__body h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-50);
  font-weight: 600;
  margin: 26px 0 12px;
}
.spec-detail__body h5:first-child { margin-top: 0; }
.spec-detail__body p { font-size: 14.5px; line-height: 1.85; color: var(--ink-70); }
.spec-detail__body ul.feat-list { display: grid; gap: 9px; }
.spec-detail__body ul.feat-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-70);
}
.spec-detail__body ul.feat-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 8px;
  border: 1.5px solid var(--accent);
}
ul.params { border-top: 1px solid var(--line); }
ul.params li {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 18px;
  padding-block: 11px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 13.8px;
  line-height: 1.6;
}
ul.params li span:first-child {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ink-50);
  text-transform: uppercase;
  padding-top: 2px;
}
ul.params li span:last-child { font-family: var(--font-cjk); font-weight: 500; color: var(--ink); }
@media (max-width: 560px) {
  ul.params li { grid-template-columns: minmax(0, 1fr); gap: 3px; }
}

/* image slot placeholder */
.img-slot {
  position: relative;
  display: grid;
  place-items: center;
  background: var(--paper-2);
  border: 1px dashed var(--line);
  min-height: 190px;
  overflow: hidden;
}
.img-slot::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 22px 22px;
}
.img-slot svg { width: 108px; height: 108px; color: var(--steel); position: relative; }
.img-slot figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 9px 14px;
  background: rgba(21, 24, 28, .72);
  color: rgba(255, 255, 255, .78);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* ---------- 27. Utilities ---------- */
.stack-sm > * + * { margin-top: 12px; }
.stack > * + * { margin-top: 20px; }
.stack-lg > * + * { margin-top: 32px; }
.mt-lg { margin-top: clamp(28px, 3.4vw, 46px); }
.center { text-align: center; }
.mx-auto { margin-inline: auto; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.grid-2 { display: grid; gap: clamp(24px, 3vw, 44px); }
@media (min-width: 820px) { .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.grid-3 { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 780px) { .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.panel { background: var(--paper-card); padding: clamp(24px, 2.6vw, 34px); }

/* =========================================================
   28. Product catalogue (instrument hub + detail pages)
   ========================================================= */

/* --- 28.1 category index strip --- */
.subcat-index {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
@media (min-width: 760px) { .subcat-index { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1140px) { .subcat-index { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.subcat-index a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--paper-card);
  padding: 20px 20px 22px;
  transition: background .3s var(--ease-out-quart), color .3s var(--ease-out-quart);
}
.subcat-index a:hover { background: var(--blueprint); color: #fff; }
.subcat-index a:hover .subcat-index__no { color: var(--accent); }
.subcat-index a:hover .subcat-index__ct { color: rgba(255,255,255,.55); }
.subcat-index__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ink-50);
  transition: color .3s var(--ease-out-quart);
}
.subcat-index__nm {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: 15.5px;
  line-height: 1.4;
  letter-spacing: -.01em;
}
.subcat-index__ct {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--ink-35);
  transition: color .3s var(--ease-out-quart);
}

/* --- 28.2 sub-category block --- */
.subcat {
  padding-block: clamp(48px, 5.6vw, 84px);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 96px;
}
.subcat:last-of-type { border-bottom: 0; }
.subcat__head {
  display: grid;
  gap: clamp(20px, 3vw, 44px);
  align-items: end;
  margin-bottom: clamp(28px, 3.4vw, 46px);
}
@media (min-width: 900px) { .subcat__head { grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); } }
.subcat__no {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
}
.subcat__title { margin-top: 12px; font-size: clamp(26px, 2.6vw + 16px, 46px); }
.subcat__en {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-50);
}
.subcat__desc { color: var(--ink-70); font-size: 15px; line-height: 1.8; max-width: 58ch; }
.subcat__meta {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}
.subcat__meta span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-50);
  border: 1px solid var(--line);
  padding: 4px 9px;
}

/* --- 28.3 product card grid --- */
.pgrid {
  display: grid;
  gap: clamp(14px, 1.5vw, 22px);
}
@media (min-width: 620px)  { .pgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1000px) { .pgrid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 1340px) { .pgrid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

.pcard {
  display: flex;
  flex-direction: column;
  background: var(--paper-card);
  border: 1px solid var(--line);
  transition: border-color .32s var(--ease-out-quart), transform .32s var(--ease-out-quart), box-shadow .32s var(--ease-out-quart);
}
.pcard:hover {
  border-color: var(--ink-35);
  transform: translateY(-3px);
  box-shadow: 0 14px 34px -22px rgba(21,24,28,.45);
}
.pcard__well {
  position: relative;
  aspect-ratio: 4 / 3;
  background: #fff;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  display: grid;
  place-items: center;
}
.pcard__well img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform .5s var(--ease-out-expo);
}
.pcard:hover .pcard__well img { transform: scale(1.045); }
.pcard__no {
  position: absolute;
  top: 0; left: 0;
  padding: 5px 9px;
  background: var(--blueprint);
  color: rgba(255,255,255,.8);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  z-index: 1;
}
.pcard__ph {
  width: 100%; height: 100%;
  display: grid;
  place-items: center;
  color: var(--ink-35);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.pcard__body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  flex: 1;
}
.pcard__name {
  font-family: var(--font-cjk);
  font-weight: 900;
  font-size: 15.5px;
  line-height: 1.45;
  letter-spacing: -.01em;
}
.pcard__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-70);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.pcard__foot {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.pcard__std {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--ink-35);
  text-transform: uppercase;
}
.pcard__go {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--accent);
  white-space: nowrap;
}

/* --- 28.4 detail page --- */
.pdetail-head {
  display: grid;
  gap: clamp(26px, 3.4vw, 52px);
}
@media (min-width: 940px) { .pdetail-head { grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr); align-items: start; } }

.pgal { position: relative; }
@media (min-width: 940px) { .pgal { position: sticky; top: 96px; } }
.pgal__main {
  position: relative;
  aspect-ratio: 4 / 3;
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
  display: grid;
  place-items: center;
}
.pgal__main img { width: 100%; height: 100%; object-fit: contain; }
.pgal__badge {
  position: absolute;
  top: 0; left: 0;
  padding: 6px 11px;
  background: var(--blueprint);
  color: rgba(255,255,255,.82);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  z-index: 2;
}
.pgal__thumbs {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.pgal__thumb {
  flex: 0 0 auto;
  width: 76px; height: 62px;
  background: #fff;
  border: 1px solid var(--line);
  padding: 0;
  cursor: pointer;
  overflow: hidden;
  transition: border-color .25s;
}
.pgal__thumb img { width: 100%; height: 100%; object-fit: contain; }
.pgal__thumb[aria-current="true"] { border-color: var(--accent); border-width: 2px; }

.pmeta { display: grid; gap: 0; border: 1px solid var(--line); background: var(--paper-card); }
.pmeta__row {
  display: grid;
  gap: 4px 16px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-soft);
}
@media (min-width: 560px) { .pmeta__row { grid-template-columns: 118px minmax(0, 1fr); } }
.pmeta__row:last-child { border-bottom: 0; }
.pmeta__k {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-50);
  padding-top: 2px;
}
.pmeta__v { font-size: 14.5px; line-height: 1.7; }

.pprose {
  display: grid;
  gap: clamp(24px, 2.6vw, 38px);
  max-width: 78ch;
}
.pprose h3 {
  font-family: var(--font-cjk);
  font-size: clamp(17px, .8vw + 15px, 21px);
  font-weight: 900;
  letter-spacing: -.01em;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 16px;
}
.pprose h4 {
  font-family: var(--font-cjk);
  font-size: 16px;
  font-weight: 900;
  margin-top: 6px;
  margin-bottom: 10px;
}
.pprose p {
  font-size: 14.8px;
  line-height: 1.88;
  color: var(--ink-70);
}
.pprose p + p { margin-top: 10px; }
.pprose ul, .pprose ol { display: grid; gap: 8px; margin-top: 4px; }
.pprose li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-70);
}
.pprose ul > li::before {
  content: "";
  position: absolute;
  left: 2px; top: 11px;
  width: 6px; height: 6px;
  background: var(--accent);
}
.pprose ol { counter-reset: li; }
.pprose ol > li::before {
  counter-increment: li;
  content: counter(li, decimal-leading-zero);
  position: absolute;
  left: 0; top: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
}
.pprose strong, .pprose b { font-weight: 800; color: var(--ink); }
.pprose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.8px;
  margin-top: 6px;
  background: var(--paper-card);
}
.pprose table td {
  border: 1px solid var(--line);
  padding: 9px 12px;
  line-height: 1.65;
  vertical-align: top;
}
.pprose table tr:first-child td {
  background: var(--blueprint);
  color: rgba(255,255,255,.9);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  border-color: var(--blueprint);
}
.pprose table td p { font-size: inherit; line-height: inherit; color: inherit; }
.pprose img { border: 1px solid var(--line); background: #fff; }
.pprose__wrap { overflow-x: auto; }

.pnav {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
@media (min-width: 720px) { .pnav { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.pnav a {
  background: var(--paper-card);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background .3s, color .3s;
}
.pnav a:hover { background: var(--blueprint); color: #fff; }
.pnav a:hover .pnav__k { color: var(--accent); }
.pnav a:hover .pnav__t { color: #fff; }
.pnav__k {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-50);
}
.pnav__t { font-weight: 800; font-size: 15px; line-height: 1.4; }
.pnav--next { text-align: right; }

.chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  background: var(--paper-card);
  padding: 5px 10px;
  color: var(--ink-70);
}
.chip--accent { border-color: var(--accent); color: var(--accent-deep); background: var(--accent-soft); }
.chiprow { display: flex; flex-wrap: wrap; gap: 8px; }
.span-all { grid-column: 1 / -1; }

.muted { color: var(--ink-50); font-size: 13.5px !important; }

/* --- 28.1b subcat-index cards: product photo on top, text below --- */
.subcat-index--bg a {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: 0 0 16px;
  gap: 4px;
  color: var(--ink);
}
.subcat-index--bg a::before {
  content: "";
  display: block;
  position: relative;
  z-index: 0;
  height: 148px;
  margin: 0 0 12px;
  background-image: var(--bgimg, none);
  background-size: cover;
  background-position: center;
  transform: scale(1.001);
  transition: transform .6s var(--ease-out-expo);
}
.subcat-index--bg a .subcat-index__no,
.subcat-index--bg a .subcat-index__nm,
.subcat-index--bg a .subcat-index__ct { padding-inline: 16px; }
.subcat-index--bg a:hover,
.subcat-index--bg a:hover .subcat-index__nm { color: #fff; }
.subcat-index--bg a:hover .subcat-index__no { color: #FF9B66; }
.subcat-index--bg a:hover .subcat-index__ct { color: rgba(255,255,255,.7); }
.subcat-index--bg a:hover::before { transform: scale(1.06); }
/* no-photo fallback (T-08): keep original paper look */
.subcat-index--bg a:not([style*="--bgimg"]) { color: var(--ink); }
.subcat-index--bg a:not([style*="--bgimg"])::before { height: 0; margin: 0; }
.subcat-index--bg a:not([style*="--bgimg"]) .subcat-index__no { color: var(--ink-50); }
.subcat-index--bg a:not([style*="--bgimg"]) .subcat-index__nm { color: var(--ink); }
.subcat-index--bg a:not([style*="--bgimg"]) .subcat-index__ct { color: var(--ink-35); }
.subcat-index--bg a:not([style*="--bgimg"]):hover { background: var(--blueprint); color: #fff; }
.subcat-index--bg a:not([style*="--bgimg"]):hover .subcat-index__no,
.subcat-index--bg a:not([style*="--bgimg"]):hover .subcat-index__ct { color: rgba(255,255,255,.6); }
.subcat-index--bg a:not([style*="--bgimg"]):hover .subcat-index__nm { color: #fff; }

/* ---- header language toggle ---- */
.header__lang{display:inline-flex;align-items:center;gap:7px;cursor:pointer;letter-spacing:.1em;font-weight:700;white-space:nowrap}
.header__lang svg{width:15px;height:15px;flex:none}
.header__lang:hover{filter:brightness(1.08)}

/* ---- language dropdown menu (4 langs) ---- */
.header__lang{position:relative}
.lang-menu{position:fixed;z-index:400;min-width:168px;background:var(--paper-card);border:1px solid var(--line);box-shadow:0 14px 34px rgba(16,24,40,.14);display:none;padding:6px}
.lang-menu.open{display:block}
.lang-menu button{display:block;width:100%;text-align:start;padding:9px 12px;background:none;border:0;font:inherit;font-size:13.5px;cursor:pointer;color:var(--ink)}
.lang-menu button:hover{background:var(--blueprint);color:#fff}
.lang-menu button[aria-current="true"]{color:var(--accent);font-weight:700}

/* ---- RTL (Arabic) fine-tuning ---- */
[dir="rtl"] .spec-detail__body ul.feat-list li::before{left:auto;right:0}
[dir="rtl"] .spec-detail__body ul.feat-list li{padding-left:0;padding-right:18px}
[dir="rtl"] .adv__row::after{left:auto;right:0}
[dir="rtl"] .catblock__count{right:auto;left:12px}
[dir="rtl"] .crumbs{direction:rtl}

/* ================= 28.1c Quick-nav index cards with product image ================= */
.qnav{position:relative;overflow:hidden}
.qnav::before{content:"";position:absolute;inset:0;background-image:var(--bgimg);background-size:cover;background-position:center;opacity:.15;pointer-events:none;transition:opacity .35s ease,transform .35s ease}
.qnav:hover::before{opacity:.30;transform:scale(1.05)}
.qnav::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--paper) 0%,transparent 55%);pointer-events:none}
.qnav>*{position:relative;z-index:1}