/* ==========================================================================
   Foshan Nuoxuan Mould — single-page site
   Palette: graphite / warm white / copper
   ========================================================================== */

:root {
  --bg: #0b0c0d;
  --bg-soft: #101214;
  --bg-deep: #08090a;
  --ink: #f1eee7;
  --ink-dim: #a3a49f;
  --ink-faint: #6e706c;
  --line: rgba(241, 238, 231, 0.14);
  --line-strong: rgba(241, 238, 231, 0.28);
  --paper: #f2efe8;
  --paper-ink: #15171a;
  --paper-dim: #5c5e5b;
  --line-dark: rgba(21, 23, 26, 0.17);
  --copper: #c87545;
  --copper-bright: #e08a55;
  --font-display: "Bahnschrift", "DIN Alternate", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --gutter: clamp(20px, 4.2vw, 64px);
  --header-h: 84px;
  --maxw: 1440px;
}

*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 500;
  pointer-events: none;
  opacity: 0.032;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
}

body.menu-open,
body.lightbox-open { overflow: hidden; }

::selection {
  background: var(--copper);
  color: #0b0c0d;
}

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

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

.container {
  width: min(100% - (var(--gutter) * 2), var(--maxw));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 12px 18px;
  background: var(--copper);
  color: #0b0c0d;
  font-size: 12px;
  letter-spacing: 0.08em;
  transform: translateY(-160%);
  transition: transform 0.3s var(--ease);
}
.skip-link:focus { transform: none; }

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 120;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 12, 13, 0.72), rgba(11, 12, 13, 0));
  pointer-events: none;
  transition: opacity 0.4s;
}
.site-header.is-scrolled {
  background: rgba(11, 12, 13, 0.88);
  border-bottom-color: var(--line);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.site-header.is-scrolled::before { opacity: 0; }

.header__inner {
  position: relative;
  z-index: 2;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex: none;
}
.brand__logo {
  display: block;
  width: auto;
  height: clamp(38px, 4.4vw, 46px);
  flex: none;
  transition: opacity 0.3s;
}
.brand:hover .brand__logo { opacity: 0.84; }
.brand__divider {
  width: 1px;
  height: 26px;
  background: var(--line-strong);
  flex: none;
}
.brand__cn {
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--ink-dim);
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.2vw, 34px);
  margin-left: auto;
}
.nav__link {
  position: relative;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  padding: 8px 0;
  transition: color 0.3s;
  white-space: nowrap;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 2px;
  height: 1px;
  background: var(--copper);
  transition: right 0.4s var(--ease);
}
.nav__link:hover,
.nav__link.is-active { color: var(--ink); }
.nav__link:hover::after,
.nav__link.is-active::after { right: 0; }

.header__actions {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 18px;
  flex: none;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: transparent;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  cursor: pointer;
  transition: border-color 0.3s, color 0.3s;
}
.lang-toggle:hover { border-color: var(--copper); }
.lang-toggle__item { transition: color 0.3s; }
.lang-toggle__item.is-active { color: var(--ink); }
.lang-toggle__sep { opacity: 0.35; }

.menu-toggle {
  display: none;
  position: relative;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
}
.menu-toggle span {
  position: absolute;
  left: 11px;
  width: 16px;
  height: 1px;
  background: var(--ink);
  transition: transform 0.35s var(--ease), top 0.35s var(--ease);
}
.menu-toggle span:nth-child(1) { top: 16px; }
.menu-toggle span:nth-child(2) { top: 22px; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { top: 19px; transform: rotate(-45deg); }

/* --------------------------------------------------------------------------
   Buttons / links
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 52px;
  padding: 0 26px;
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.35s var(--ease), border-color 0.35s, color 0.35s, transform 0.35s var(--ease);
}
.btn__arrow { font-size: 14px; transition: transform 0.35s var(--ease); }
.btn:hover .btn__arrow { transform: translate(2px, -2px); }
.btn--solid {
  background: var(--copper);
  border-color: var(--copper);
  color: #0b0c0d;
}
.btn--solid:hover {
  background: var(--copper-bright);
  border-color: var(--copper-bright);
}
.btn--ghost {
  border-color: var(--line-strong);
  color: var(--ink);
  background: rgba(11, 12, 13, 0.2);
}
.btn--ghost:hover {
  border-color: var(--copper);
  color: var(--copper-bright);
}
.btn--large {
  min-height: 60px;
  padding: 0 34px;
  font-size: 12px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: color 0.3s, border-color 0.3s;
}
.text-link:hover { color: var(--copper-bright); border-color: var(--copper); }
.text-link span:last-child { transition: transform 0.35s var(--ease); }
.text-link:hover span:last-child { transform: translateX(5px); }

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  isolation: isolate;
  background: var(--bg-deep);
}
.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 60% 50%;
  filter: grayscale(0.45) contrast(1.08) brightness(0.56);
  transform: scale(1.06);
  animation: heroDrift 26s var(--ease) forwards;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(11, 12, 13, 0.96) 0%, rgba(11, 12, 13, 0.78) 38%, rgba(11, 12, 13, 0.18) 76%, rgba(11, 12, 13, 0.5) 100%),
    linear-gradient(0deg, #0b0c0d 0%, rgba(11, 12, 13, 0.5) 26%, rgba(11, 12, 13, 0) 58%),
    linear-gradient(180deg, rgba(11, 12, 13, 0.7) 0%, rgba(11, 12, 13, 0) 32%);
}
.hero__grid {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-top: calc(var(--header-h) + 80px);
}

.hero__content {
  max-width: 1000px;
  padding-bottom: clamp(36px, 6vw, 80px);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--copper-bright);
}
.eyebrow__mark {
  width: 7px;
  height: 7px;
  background: var(--copper);
  flex: none;
}

.hero__title {
  margin: 26px 0 30px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(50px, 7.4vw, 118px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  max-width: 14ch;
}
.hero__line { display: block; }
.hero__line:last-child { color: var(--ink); }
.hero__line:first-child { color: var(--ink); }

.hero__lead {
  max-width: 58ch;
  font-size: clamp(15px, 1.25vw, 18px);
  line-height: 1.8;
  color: rgba(241, 238, 231, 0.72);
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.stat {
  padding: 26px 24px 38px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: 0; }
.stat__value {
  font-family: var(--font-display);
  font-size: clamp(30px, 3.1vw, 46px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
}
.stat__plus { color: var(--copper); font-size: 0.7em; margin-left: 2px; }
.stat__label {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.hero__scroll {
  display: none;
}
.hero__scroll-line {
  width: 1px;
  height: 54px;
  background: linear-gradient(180deg, var(--copper), transparent);
}

.hero__rail {
  position: absolute;
  right: var(--gutter);
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 18px;
  font-family: var(--font-display);
  font-size: 9px;
  letter-spacing: 0.26em;
  color: rgba(241, 238, 231, 0.38);
  writing-mode: vertical-rl;
  pointer-events: none;
}
.hero__rail-line { width: 1px; height: 70px; background: var(--line-strong); }

@keyframes heroDrift {
  from { transform: scale(1.1); }
  to { transform: scale(1.0); }
}
@keyframes heroIn {
  from { opacity: 0; transform: translateY(26px); }
  to { opacity: 1; transform: none; }
}

.hero .eyebrow { animation: heroIn 0.9s var(--ease) 0.05s both; }
.hero__title { animation: heroIn 1s var(--ease) 0.15s both; }
.hero__lead { animation: heroIn 1s var(--ease) 0.28s both; }
.hero__actions { animation: heroIn 1s var(--ease) 0.4s both; }
.hero__stats { animation: heroIn 1s var(--ease) 0.52s both; }

/* --------------------------------------------------------------------------
   Section scaffolding
   -------------------------------------------------------------------------- */

.section {
  position: relative;
  padding: clamp(88px, 10.5vw, 160px) 0;
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.section--dark { background: var(--bg); }
.section--alt { background: var(--bg-soft); }
.section--paper {
  background: var(--paper);
  color: var(--paper-ink);
  --ink: var(--paper-ink);
  --ink-dim: var(--paper-dim);
  --ink-faint: #8c8d88;
  --line: var(--line-dark);
  --line-strong: rgba(21, 23, 26, 0.34);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  column-gap: clamp(32px, 6vw, 110px);
  align-items: end;
  margin-bottom: clamp(48px, 6vw, 92px);
}
.section-head__index {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: clamp(22px, 2.8vw, 38px);
}
.section-num {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--copper);
}
.section-rule {
  width: 46px;
  height: 1px;
  background: var(--copper);
  opacity: 0.55;
}
.section-kicker {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.section-title {
  grid-column: 1;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(38px, 5.1vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.03em;
}
.title-line { display: block; }
.section-lede {
  grid-column: 2;
  align-self: end;
  max-width: 42ch;
  padding-bottom: 0.5em;
  font-size: clamp(14px, 1.15vw, 16px);
  line-height: 1.8;
  color: var(--ink-dim);
}

/* --------------------------------------------------------------------------
   About
   -------------------------------------------------------------------------- */

.about__grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6.5fr);
  gap: clamp(36px, 6.5vw, 108px);
  align-items: start;
}
.about__figure {
  position: relative;
}
.about__figure::before {
  content: "";
  position: absolute;
  top: -14px;
  right: -14px;
  width: 74px;
  height: 74px;
  border-top: 1px solid var(--copper);
  border-right: 1px solid var(--copper);
  opacity: 0.7;
  pointer-events: none;
}
.media-frame {
  position: relative;
  overflow: hidden;
  background: #141618;
  aspect-ratio: 4 / 5;
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.4) contrast(1.05) brightness(0.86);
  transition: filter 0.9s, transform 1.4s var(--ease);
}
.about__figure:hover .media-frame img {
  filter: grayscale(0.05) contrast(1.02) brightness(0.95);
  transform: scale(1.035);
}
.about__figure figcaption {
  display: flex;
  gap: 14px;
  margin-top: 14px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}
.fig-num {
  font-family: var(--font-display);
  color: var(--copper);
  letter-spacing: 0.1em;
}

.about__body { padding-top: clamp(0px, 2vw, 26px); }
.about__body .lead {
  font-size: clamp(19px, 1.75vw, 25px);
  line-height: 1.6;
  letter-spacing: 0.002em;
  color: var(--ink);
  margin-bottom: 24px;
  text-wrap: pretty;
}
.about__body p:not(.lead) {
  max-width: 62ch;
  margin-bottom: 16px;
  color: var(--ink-dim);
  font-size: 15px;
  line-height: 1.85;
  text-wrap: pretty;
}

.spec-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 clamp(24px, 4vw, 64px);
  margin: 38px 0 38px;
}
.spec {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
}
.spec dt {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}
.spec dd {
  font-family: var(--font-display);
  font-size: clamp(18px, 1.6vw, 23px);
  font-weight: 500;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   Capabilities
   -------------------------------------------------------------------------- */

.cap-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(16px, 2vw, 28px);
}
.cap-card {
  position: relative;
  min-height: clamp(520px, 42vw, 640px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(24px, 3vw, 42px);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #111315;
  isolation: isolate;
}
.cap-card__img {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  filter: grayscale(0.55) contrast(1.12) brightness(0.78);
  transition: transform 1.2s var(--ease), opacity 0.8s, filter 0.8s;
}
.cap-card:hover .cap-card__img {
  transform: scale(1.045);
  opacity: 0.66;
  filter: grayscale(0.15) contrast(1.05) brightness(0.85);
}
.cap-card__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(0deg, rgba(9, 10, 11, 0.96) 0%, rgba(9, 10, 11, 0.68) 40%, rgba(9, 10, 11, 0.08) 78%),
    linear-gradient(180deg, rgba(9, 10, 11, 0.6) 0%, rgba(9, 10, 11, 0) 32%);
  pointer-events: none;
}
.cap-card__top {
  position: absolute;
  top: clamp(24px, 3vw, 38px);
  left: clamp(24px, 3vw, 42px);
  right: clamp(24px, 3vw, 42px);
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.cap-card__num { color: var(--copper-bright); }
.cap-card__tag { color: rgba(241, 238, 231, 0.55); }
.cap-card__body { position: relative; z-index: 2; }
.cap-card__body h3 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.2vw, 44px);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.cap-card__body p {
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(241, 238, 231, 0.68);
}
.cap-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 24px;
  margin-top: 30px;
  border-top: 1px solid var(--line);
}
.cap-list li {
  display: flex;
  gap: 9px;
  padding: 11px 0;
  font-size: 12.5px;
  line-height: 1.5;
  color: rgba(241, 238, 231, 0.8);
  border-bottom: 1px solid var(--line);
}
.cap-list__plus { color: var(--copper); flex: none; }

/* --------------------------------------------------------------------------
   Process
   -------------------------------------------------------------------------- */

.process__list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}
.process__step {
  position: relative;
  border-top: 1px solid var(--line);
  padding: 22px 12px 10px 0;
  transition: background 0.4s var(--ease);
}
.process__step::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 5px;
  height: 5px;
  background: var(--copper);
}
.process__num {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--copper);
}
.process__step h3 {
  margin: 42px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(17px, 1.5vw, 21px);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.process__step p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper-dim);
}
.process__step:hover { background: rgba(21, 23, 26, 0.035); }

/* --------------------------------------------------------------------------
   Products
   -------------------------------------------------------------------------- */

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 26px;
  padding-top: 16px;
  margin-bottom: clamp(28px, 3.5vw, 48px);
  border-top: 1px solid var(--line);
}
.filter {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 0;
  border: 0;
  background: none;
  color: var(--ink-dim);
  font-size: 12px;
  letter-spacing: 0.03em;
  cursor: pointer;
  position: relative;
  transition: color 0.3s;
}
.filter::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 3px;
  height: 1px;
  background: var(--copper);
  transition: right 0.35s var(--ease);
}
.filter:hover { color: var(--ink); }
.filter.is-active { color: var(--ink); }
.filter.is-active::after { right: 0; }
.filter__count {
  font-family: var(--font-display);
  font-size: 9px;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 3.6vw, 52px) clamp(18px, 2.2vw, 32px);
  counter-reset: product;
}
.product-card {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  counter-increment: product;
}
.product-card.is-hidden { display: none; }
.product-card__media {
  display: block;
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #151719;
  border: 1px solid var(--line);
}
.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.04) brightness(0.93);
  transition: transform 0.9s var(--ease), filter 0.7s;
}
.product-card:hover .product-card__media img,
.product-card:focus-visible .product-card__media img {
  transform: scale(1.045);
  filter: saturate(1) contrast(1.03) brightness(1);
}
.product-card__cat {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 6px 9px;
  background: rgba(11, 12, 13, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  font-family: var(--font-display);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: rgba(241, 238, 231, 0.9);
  transition: background 0.3s, color 0.3s;
}
.product-card:hover .product-card__cat {
  background: var(--copper);
  color: #0b0c0d;
}
.product-card__plus {
  position: absolute;
  right: 14px;
  bottom: 14px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(241, 238, 231, 0.55);
  border-radius: 50%;
  color: var(--ink);
  font-size: 17px;
  line-height: 1;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.35s, transform 0.35s var(--ease), background 0.3s, border-color 0.3s, color 0.3s;
}
.product-card:hover .product-card__plus,
.product-card:focus-visible .product-card__plus {
  opacity: 1;
  transform: none;
  background: var(--copper);
  border-color: var(--copper);
  color: #0b0c0d;
}
.product-card__body {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-top: 13px;
}
.product-card__title {
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink);
  transition: color 0.3s;
}
.product-card:hover .product-card__title { color: var(--copper-bright); }
.product-card__index {
  font-family: var(--font-display);
  font-size: 9px;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  flex: none;
}
.product-card__index::before { content: counter(product, decimal-leading-zero); }

.product-grid .reveal:nth-child(3n+2) { transition-delay: 70ms; }
.product-grid .reveal:nth-child(3n+3) { transition-delay: 140ms; }

.product-card:nth-child(3) .product-card__media img { object-position: 80% 50%; }
.product-card:nth-child(4) .product-card__media img { object-position: 8% 50%; }
.product-card:nth-child(15) .product-card__media img { object-position: 50% 35%; }

.products__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: clamp(40px, 5vw, 64px);
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.products__foot p {
  max-width: 52ch;
  font-size: 14px;
  color: var(--ink-dim);
}

/* --------------------------------------------------------------------------
   Parts
   -------------------------------------------------------------------------- */

.parts__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 28px);
}
.part-card__media {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
}
.part-card__media img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  mix-blend-mode: multiply;
  transition: transform 0.6s var(--ease);
}
.part-card:hover .part-card__media img { transform: scale(1.045); }
.part-card figcaption {
  display: flex;
  justify-content: flex-start;
  gap: 10px;
  padding-top: 12px;
  margin-top: 4px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-dim);
}
.part-card__num {
  font-family: var(--font-display);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--copper);
}

/* --------------------------------------------------------------------------
   Workshop
   -------------------------------------------------------------------------- */

.workshop { overflow: hidden; }
.workshop__viewport { position: relative; }
.workshop__rail {
  --rail-pad: max(var(--gutter), calc((100vw - var(--maxw)) / 2 + var(--gutter)));
  display: flex;
  gap: clamp(14px, 1.6vw, 22px);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scroll-padding-left: var(--rail-pad);
  padding: 0 var(--rail-pad) 14px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.workshop__rail::-webkit-scrollbar { display: none; }
.workshop-card {
  flex: 0 0 clamp(280px, 33vw, 500px);
  scroll-snap-align: start;
}
.workshop-card__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #151719;
  border: 1px solid var(--line);
}
.workshop-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.6) contrast(1.06) brightness(0.82);
  transition: filter 0.7s, transform 0.9s var(--ease);
}
.workshop-card:hover .workshop-card__media img {
  filter: grayscale(0.05) contrast(1.02) brightness(0.96);
  transform: scale(1.035);
}
.workshop-card figcaption {
  display: flex;
  gap: 12px;
  padding-top: 12px;
  font-size: 12px;
  color: var(--ink-dim);
}
.wc-num {
  font-family: var(--font-display);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--copper);
  padding-top: 2px;
}
.workshop__controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 20px;
}
.workshop__hint {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.workshop__buttons { display: flex; gap: 8px; }
.rail-btn {
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font-size: 15px;
  cursor: pointer;
  transition: background 0.3s, border-color 0.3s, color 0.3s;
}
.rail-btn:hover:not(:disabled) {
  background: var(--copper);
  border-color: var(--copper);
  color: #0b0c0d;
}
.rail-btn:disabled { opacity: 0.3; cursor: default; }

/* --------------------------------------------------------------------------
   Quality
   -------------------------------------------------------------------------- */

.quality__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 3.5vw, 52px);
  border-top: 1px solid var(--line);
}
.quality-card { padding-top: 30px; }
.quality-card__icon {
  display: inline-flex;
  width: 40px;
  height: 40px;
  color: var(--copper);
}
.quality-card__icon svg { width: 100%; height: 100%; }
.quality-card__num {
  display: block;
  margin-top: 30px;
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
}
.quality-card h3 {
  margin: 12px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(20px, 1.9vw, 25px);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.quality-card p {
  max-width: 36ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-dim);
}

/* --------------------------------------------------------------------------
   Contact
   -------------------------------------------------------------------------- */

.contact {
  background:
    radial-gradient(60% 90% at 92% 8%, rgba(200, 117, 69, 0.15) 0%, rgba(11, 12, 13, 0) 62%),
    var(--bg);
}
.contact__title { max-width: none; }
.contact__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 40px);
  border-top: 1px solid var(--line);
}
.contact-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 0 28px;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.3s;
}
a.contact-card:hover { border-bottom-color: var(--copper); }
.contact-card__label {
  font-family: var(--font-display);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper);
}
.contact-card__value {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.6vw, 22px);
  letter-spacing: -0.01em;
  line-height: 1.4;
  transition: color 0.3s;
}
a.contact-card:hover .contact-card__value { color: var(--copper-bright); }
.contact-card__value--address {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-dim);
}
.contact-card__arrow {
  position: absolute;
  top: 24px;
  right: 0;
  font-size: 15px;
  color: var(--ink-faint);
  transition: color 0.3s, transform 0.3s var(--ease);
}
a.contact-card:hover .contact-card__arrow {
  color: var(--copper-bright);
  transform: translate(2px, -2px);
}

.contact__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin-top: clamp(36px, 4.5vw, 60px);
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.contact__bar-text {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 12px;
  color: var(--ink-dim);
}
.contact__bar-en {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
  padding: 44px 0;
  background: var(--bg-deep);
  border-top: 1px solid var(--line);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.2fr;
  align-items: center;
  gap: 32px;
}
.footer__brand {
  display: flex;
  align-items: center;
  gap: 16px;
}
.footer__brand .brand__logo--footer { height: 56px; }
.footer__name {
  display: block;
  font-size: 13px;
  letter-spacing: 0.04em;
}
.footer__en {
  display: block;
  margin-top: 3px;
  font-family: var(--font-display);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
}
.footer__nav {
  display: flex;
  justify-content: center;
  gap: clamp(16px, 2.4vw, 32px);
}
.footer__nav a {
  font-size: 11px;
  color: var(--ink-dim);
  transition: color 0.3s;
}
.footer__nav a:hover { color: var(--copper-bright); }
.footer__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  font-size: 10px;
  color: var(--ink-faint);
  text-align: right;
}
.footer__made {
  font-family: var(--font-display);
  font-size: 8.5px;
  letter-spacing: 0.16em;
}

/* --------------------------------------------------------------------------
   Lightbox
   -------------------------------------------------------------------------- */

.lightbox {
  position: fixed;
  inset: 0;
  width: 100%;
  max-width: none;
  height: 100%;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: #0a0b0c;
  color: var(--ink);
  overflow: hidden;
}
.lightbox[open] { display: flex; flex-direction: column; }
.lightbox::backdrop { background: rgba(0, 0, 0, 0.82); }
.lightbox[open] { animation: lbIn 0.35s var(--ease); }
@keyframes lbIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.lightbox__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px clamp(20px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  flex: none;
}
.lightbox__count {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--ink-dim);
}
.lightbox__close {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.lightbox__close:hover {
  background: var(--copper);
  border-color: var(--copper);
  color: #0b0c0d;
}
.lightbox__stage {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 3vw, 32px) clamp(48px, 8vw, 120px);
}
.lightbox__stage img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}
.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  background: rgba(11, 12, 13, 0.55);
  color: var(--ink);
  font-size: 15px;
  cursor: pointer;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.lightbox__nav:hover {
  background: var(--copper);
  border-color: var(--copper);
  color: #0b0c0d;
}
.lightbox__nav--prev { left: clamp(12px, 2vw, 26px); }
.lightbox__nav--next { right: clamp(12px, 2vw, 26px); }
.lightbox__caption {
  flex: none;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 18px clamp(20px, 4vw, 48px) 30px;
  border-top: 1px solid var(--line);
}
.lightbox__cat {
  display: block;
  font-family: var(--font-display);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 8px;
}
.lightbox__caption h3 {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.lightbox__caption p {
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-dim);
}

/* --------------------------------------------------------------------------
   Reveal
   -------------------------------------------------------------------------- */

.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}
.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

/* English typography refinements */
html[lang="en"] .hero__title {
  font-size: clamp(44px, 5.7vw, 94px);
  max-width: 20ch;
  letter-spacing: -0.025em;
}
html[lang="en"] .section-title {
  font-size: clamp(34px, 4vw, 58px);
}
html[lang="en"] .contact__title { max-width: none; }
html[lang="en"] .cta-title { max-width: 16ch; }

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1180px) {
  .hero__rail { display: none; }
  .hero__scroll { display: none; }
  .process__list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .process__step { padding-bottom: 28px; }
  .parts__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 980px) {
  :root { --header-h: 72px; }

  .menu-toggle { display: block; }
  .nav {
    position: fixed;
    inset: 0;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    margin: 0;
    padding: calc(var(--header-h) + 24px) var(--gutter) 40px;
    background: #0b0c0d;
    transform: translateY(-100%);
    visibility: hidden;
    opacity: 0;
    transition: transform 0.5s var(--ease), opacity 0.35s, visibility 0.5s;
  }
  .nav.is-open {
    transform: none;
    visibility: visible;
    opacity: 1;
  }
  .nav__link {
    width: 100%;
    padding: 16px 0;
    font-family: var(--font-display);
    font-size: clamp(30px, 7.2vw, 44px);
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--ink);
    border-bottom: 1px solid var(--line);
  }
  .nav__link::after { display: none; }
  .nav__link:hover, .nav__link.is-active { color: var(--copper-bright); }
  .site-header.menu-open {
    background: #0b0c0d;
    border-bottom-color: transparent;
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .section-head__index { grid-column: 1; }
  .section-title { grid-column: 1; max-width: 20ch; }
  .section-lede {
    grid-column: 1;
    margin-top: 22px;
    max-width: 48ch;
    padding-bottom: 0;
  }

  .about__grid { grid-template-columns: 1fr; }
  .about__figure { max-width: 560px; }
  .about__body { padding-top: 8px; }

  .cap-grid { grid-template-columns: 1fr; }
  .cap-card { min-height: 520px; }

  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .workshop-card { flex-basis: clamp(280px, 46vw, 440px); }

  .contact__grid { grid-template-columns: 1fr; gap: 0; }
  .contact-card { border-bottom: 1px solid var(--line); }
  .contact__bar { flex-direction: column; align-items: flex-start; }
  .contact__bar .btn { width: 100%; }

  .footer__grid { grid-template-columns: 1fr; gap: 24px; }
  .footer__nav { justify-content: flex-start; }
  .footer__meta { align-items: flex-start; text-align: left; }
}

@media (max-width: 720px) {
  .hero { min-height: 100vh; min-height: 100svh; }
  .hero__grid { padding-top: calc(var(--header-h) + 40px); }
  .hero__title { font-size: clamp(40px, 10.6vw, 62px); margin: 20px 0 24px; }
  html[lang="en"] .hero__title { font-size: clamp(34px, 9.4vw, 56px); }
  .hero__lead { font-size: 15px; line-height: 1.75; }
  .hero__actions { margin-top: 28px; }
  .hero__actions .btn { flex: 1; min-width: 0; padding: 0 16px; }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .stat { padding: 20px 16px 24px 0; }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(3), .stat:nth-child(4) { border-top: 1px solid var(--line); }
  .stat__label { font-size: 9px; }

  .section { padding: 72px 0; }
  .section-title { font-size: clamp(32px, 8vw, 44px); }
  html[lang="en"] .section-title { font-size: clamp(30px, 7.4vw, 42px); }
  .section-lede { font-size: 14px; }

  .about__body .lead { font-size: 18px; }
  .spec-list { grid-template-columns: 1fr; }
  .spec dd { font-size: 20px; }

  .cap-card { min-height: 500px; padding: 24px; }
  .cap-card__body h3 { font-size: 27px; }
  .cap-list { grid-template-columns: 1fr; }
  .cap-list li { padding: 9px 0; }

  .process__list { grid-template-columns: 1fr 1fr; gap: 0 20px; }
  .process__step { padding-top: 18px; }
  .process__step h3 { margin-top: 28px; font-size: 17px; }

  .filters { gap: 2px 18px; }
  .filter { font-size: 11.5px; }
  .products__foot { flex-direction: column; align-items: flex-start; gap: 18px; }
  .product-grid { gap: 26px 14px; }
  .product-card__title { font-size: 13px; }
  .product-card__cat { font-size: 8px; top: 8px; left: 8px; padding: 5px 7px; }
  .product-card__plus { width: 28px; height: 28px; right: 9px; bottom: 9px; font-size: 14px; }

  .parts__grid { grid-template-columns: 1fr 1fr; }

  .workshop-card { flex-basis: 80vw; }
  .workshop__hint { display: none; }
  .workshop__controls { justify-content: flex-end; }

  .quality__grid { grid-template-columns: 1fr; gap: 32px; }
  .quality-card { padding-top: 24px; }
  .quality-card__num { margin-top: 20px; }

  .contact__title { max-width: none; }
  .contact__grid { border-top: 0; }
  .contact-card { padding: 20px 0 22px; }
  .lightbox__stage { padding: 12px 52px; }
  .lightbox__caption { padding: 16px 20px 24px; }
  .lightbox__nav { width: 38px; height: 38px; }
  .lightbox__nav--prev { left: 6px; }
  .lightbox__nav--next { right: 6px; }
}

@media (max-width: 460px) {
  .section-title { font-size: clamp(28px, 8vw, 40px); }
  html[lang="en"] .section-title { font-size: clamp(26px, 7.4vw, 36px); }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .product-card__media { aspect-ratio: 4 / 3; }
  .process__list { grid-template-columns: 1fr; }
  .process__step { padding-bottom: 24px; }
  .parts__grid { grid-template-columns: 1fr 1fr; }
  .brand__en { letter-spacing: 0.14em; font-size: 14px; }
  .lang-toggle { padding: 0 9px; }
}

@media (max-width: 380px) {
  .hero__title { font-size: clamp(32px, 9.2vw, 40px); }
  html[lang="en"] .hero__title { font-size: clamp(28px, 8.2vw, 36px); }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; flex: none; }
  .brand__cn, .brand__divider { display: none; }
}

@media (hover: none) {
  .product-card__plus { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
  .hero__media img { animation: none; transform: none; }
}