/* =========================================================
   Shenglei Stone — Dark Luxury Design System
   Direction: restrained dark luxury. Stone photography leads.
   ========================================================= */

:root {
  --ink-900: #0a0908;
  --ink-800: #0e0d0c;
  --ink-700: #141311;
  --ink-600: #1a1816;
  --ink-500: #232019;

  --line: #2a2521;
  --line-soft: #1f1b18;

  --paper: #f4f0e9;
  --paper-dim: #a9a197;
  --paper-faint: #6e675e;

  --gold: #c2a26a;
  --gold-soft: #8c7345;
  --gold-glow: rgba(194, 162, 106, 0.14);

  --font-display: "Fraunces", "Songti SC", Georgia, "Times New Roman", serif;
  --font-body: "Manrope", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;

  --container: 1440px;
  --gutter: clamp(1.25rem, 4vw, 4.5rem);
  --section-y: clamp(4.5rem, 9vw, 9rem);
  --header-h: 76px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

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

body {
  margin: 0;
  background: var(--ink-800);
  color: var(--paper-dim);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 300;
  color: var(--paper);
  margin: 0;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.6rem, 6.2vw, 5.4rem); line-height: 1.02; letter-spacing: -0.025em; }
h2 { font-size: clamp(2rem, 3.6vw, 3.1rem); line-height: 1.1; }
h3 { font-size: clamp(1.15rem, 1.6vw, 1.5rem); line-height: 1.25; font-weight: 400; }
p { margin: 0 0 1.1rem; }
p:last-child { margin-bottom: 0; }

/* ---------- layout ---------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section-y); }
.section--tight { padding-block: clamp(3rem, 5vw, 5rem); }
.section--ink900 { background: var(--ink-900); }
.section--ink700 { background: var(--ink-700); }

.rule {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: 0;
}
.rule--gold { background: var(--gold-soft); opacity: 0.5; }

/* ---------- type helpers ---------- */

.eyebrow {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.1rem;
}

.lede {
  font-size: clamp(1rem, 1.15vw, 1.125rem);
  color: var(--paper-dim);
  max-width: 62ch;
}

.muted { color: var(--paper-faint); }
.gold { color: var(--gold); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 3rem;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: clamp(2.25rem, 4vw, 3.5rem);
}
.section-head__text { max-width: 62ch; }
.section-head .lede { margin-top: 1rem; }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  white-space: nowrap;
  padding-bottom: 0.35em;
  border-bottom: 1px solid var(--gold-soft);
  transition: border-color 0.35s var(--ease), color 0.35s var(--ease);
}
.text-link:hover { color: var(--paper); border-color: var(--paper); }
.text-link::after { content: "\2192"; transition: transform 0.35s var(--ease); }
.text-link:hover::after { transform: translateX(4px); }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  padding: 0.95rem 1.9rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: 0;
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease),
    border-color 0.4s var(--ease);
  cursor: pointer;
}

.btn--gold {
  border-color: var(--gold-soft);
  color: var(--gold);
}
.btn--gold:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink-900);
}

.btn--solid {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink-900);
}
.btn--solid:hover { background: #d5b57d; border-color: #d5b57d; }

.btn--ghost {
  border-color: rgba(244, 240, 233, 0.28);
  color: var(--paper);
}
.btn--ghost:hover { border-color: var(--paper); background: rgba(244, 240, 233, 0.06); }

.btn--block { width: 100%; }

/* ---------- header ---------- */

.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background-color 0.45s var(--ease), border-color 0.45s var(--ease),
    backdrop-filter 0.45s var(--ease);
}
.header.is-stuck {
  background: rgba(10, 9, 8, 0.92);
  border-bottom-color: var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.header__inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand { display: flex; flex-direction: column; gap: 0.15rem; }
.brand__mark {
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper);
  line-height: 1;
}
.brand__sub {
  font-size: 0.55rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--paper-faint);
}

.nav { display: flex; align-items: center; gap: clamp(1.25rem, 2.4vw, 2.6rem); }
.nav__link {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--paper-dim);
  transition: color 0.35s var(--ease);
  padding-block: 0.4rem;
}
.nav__link:hover,
.nav__link[aria-current="page"] { color: var(--gold); }

.header__actions { display: flex; align-items: center; gap: 1rem; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  position: relative;
  z-index: 2;
  touch-action: manipulation;
}
.nav-toggle span {
  display: block;
  width: 17px;
  height: 1px;
  background: var(--paper);
  transition: transform 0.35s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
}

.hero__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(10, 9, 8, 0.72) 0%, rgba(10, 9, 8, 0.28) 34%,
      rgba(10, 9, 8, 0.86) 78%, var(--ink-800) 100%),
    linear-gradient(90deg, rgba(10, 9, 8, 0.78) 0%, rgba(10, 9, 8, 0.2) 58%, rgba(10, 9, 8, 0.42) 100%);
}

.hero__inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding: calc(var(--header-h) + 2rem) var(--gutter) clamp(3rem, 6vw, 5.5rem);
}

.hero__title { max-width: 20ch; margin-bottom: 1.6rem; }
.hero__title em {
  font-style: italic;
  color: var(--gold);
}
.hero__lede { max-width: 46ch; margin-bottom: 2.2rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.9rem; }

.hero__meta {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding-top: 1.4rem;
  border-top: 1px solid rgba(194, 162, 106, 0.28);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.5rem;
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper-faint);
}

.hero__scroll {
  position: absolute;
  right: var(--gutter);
  bottom: clamp(3rem, 6vw, 5.5rem);
  writing-mode: vertical-rl;
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--paper-faint);
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.hero__scroll::after {
  content: "";
  width: 1px;
  height: 54px;
  background: linear-gradient(180deg, var(--gold-soft), transparent);
}

/* ---------- trust bar ---------- */

.trustbar { border-block: 1px solid var(--line); background: var(--ink-900); }
.trustbar__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.trustbar__item {
  padding: clamp(1.6rem, 3vw, 2.4rem) clamp(1rem, 2vw, 2rem);
  border-left: 1px solid var(--line-soft);
}
.trustbar__item:first-child { border-left: 0; padding-left: 0; }
.trustbar__num {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.3vw, 2.1rem);
  font-weight: 300;
  color: var(--paper);
  line-height: 1.1;
  display: block;
}
.trustbar__num sup { font-size: 0.5em; color: var(--gold); }
.trustbar__label {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-faint);
}

/* ---------- collections (asymmetric 4 + 3) ---------- */

.collections__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(0.75rem, 1.4vw, 1.25rem);
}
.tile {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--ink-600);
  isolation: isolate;
}
.tile--wide { grid-column: span 3; aspect-ratio: 3 / 4; }
.tile__media { position: absolute; inset: 0; z-index: -2; }
.tile__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 36%;
  transition: transform 1.1s var(--ease);
}
.tile::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(10, 9, 8, 0.15) 0%, rgba(10, 9, 8, 0.34) 45%,
    rgba(10, 9, 8, 0.9) 100%);
  transition: opacity 0.5s var(--ease);
}
.tile:hover .tile__media img { transform: scale(1.05); }
.tile:hover::after { opacity: 0.86; }

.tile__body {
  position: absolute;
  inset: auto 0 0 0;
  padding: clamp(1.1rem, 1.8vw, 1.6rem);
}
.tile__name {
  font-family: var(--font-display);
  font-weight: 300;
  color: var(--paper);
  font-size: clamp(1.05rem, 1.35vw, 1.35rem);
  line-height: 1.2;
  display: block;
}
.tile__count {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}
.tile__bar {
  display: block;
  width: 26px;
  height: 1px;
  background: var(--gold-soft);
  margin-bottom: 0.9rem;
  transition: width 0.5s var(--ease), background-color 0.5s var(--ease);
}
.tile:hover .tile__bar { width: 58px; background: var(--gold); }

/* ---------- product grid & cards ---------- */

.grid-products {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1rem, 1.8vw, 1.75rem) clamp(0.75rem, 1.4vw, 1.25rem);
}

.card { display: block; }
/* shimmer skeleton: the opaque photo covers this once loaded, so it only shows
   during the lazy-load gap - a card is never left looking like an empty box */
@keyframes shimmer {
  0% { background-position: -180% 0; }
  100% { background-position: 180% 0; }
}
.skeleton {
  background: linear-gradient(100deg, var(--ink-600) 20%, var(--ink-500) 42%,
    #2b2723 50%, var(--ink-500) 58%, var(--ink-600) 80%);
  background-size: 260% 100%;
  animation: shimmer 1.6s linear infinite;
}

.card__media {
  position: relative;
  overflow: hidden;
  background: var(--ink-600);
  aspect-ratio: 1 / 1;
}
.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* bias the crop upward so floor, pallets and turf fall outside the frame */
  object-position: center 34%;
  transition: transform 1.1s var(--ease);
}
.card:hover .card__media img { transform: scale(1.05); }

.card__tag {
  position: absolute;
  top: 0.8rem;
  left: 0.8rem;
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper);
  background: rgba(10, 9, 8, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: 0.35rem 0.6rem;
  border: 1px solid rgba(194, 162, 106, 0.3);
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}
.card:hover .card__tag { opacity: 1; transform: translateY(0); }

.card__body { padding-top: 0.95rem; }
.card__name {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(0.98rem, 1.1vw, 1.1rem);
  font-weight: 400;
  color: var(--paper);
  line-height: 1.3;
}
.card__en {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--paper-faint);
  margin-top: 0.2rem;
  min-height: 1.1em;
}
.card__foot {
  margin-top: 0.7rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-faint);
}
.card:hover .card__foot { border-top-color: var(--gold-soft); color: var(--gold); }
.card:hover .card__name { color: var(--gold); }
.card__name,
.card__foot { transition: color 0.4s var(--ease), border-color 0.4s var(--ease); }

/* ---------- signature band ---------- */

.band {
  position: relative;
  min-height: clamp(340px, 46vw, 560px);
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}
.band__media { position: absolute; inset: 0; z-index: -2; }
.band__media img { width: 100%; height: 100%; object-fit: cover; object-position: center 46%; }
.band::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(10, 9, 8, 0.94) 0%, rgba(10, 9, 8, 0.7) 46%,
    rgba(10, 9, 8, 0.28) 100%);
}
.band__body { max-width: 46ch; }
.band__body h2 { margin-bottom: 1.1rem; }
.band__facts {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.band__facts li {
  list-style: none;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold-soft);
  padding: 0.45rem 0.75rem;
}

/* ---------- factory / capability ---------- */

.factory__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.factory__stats {
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.factory__stat { background: var(--ink-900); padding: 1.4rem 1.3rem; }
.factory__stat b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.4vw, 2.2rem);
  font-weight: 300;
  color: var(--paper);
  line-height: 1.1;
}
.factory__stat b sup { font-size: 0.45em; color: var(--gold); }
.factory__stat span {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-faint);
}

.videos {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(0.75rem, 1.4vw, 1.25rem);
}
.video-card { background: var(--ink-600); }
.video-card__media { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #000; }
.video-card__media video { width: 100%; height: 100%; object-fit: cover; }
.video-card__body { padding: 1rem 1.1rem 1.25rem; border-top: 1px solid var(--line-soft); }
.video-card__body h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.video-card__body p { font-size: 0.78rem; color: var(--paper-faint); margin: 0; }

.note-strip {
  margin-top: clamp(1.5rem, 2.5vw, 2.25rem);
  padding: 1.1rem 1.3rem;
  border: 1px dashed var(--line);
  font-size: 0.78rem;
  color: var(--paper-faint);
}
.note-strip strong { color: var(--gold); font-weight: 600; }

/* build-time annotation: clearly not shipping copy */
.sample-note {
  margin-top: clamp(1.25rem, 2.5vw, 2rem);
  padding: 1rem 1.15rem;
  border: 1px dashed rgba(194, 162, 106, 0.45);
  background: rgba(194, 162, 106, 0.05);
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--paper-faint);
}
.sample-note strong {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

/* ---------- markets ---------- */

.markets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1rem, 2vw, 2rem);
}
.market { padding-top: 1.4rem; border-top: 1px solid var(--line); }
.market__idx {
  display: block;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 0.9rem;
}
.market h3 { margin-bottom: 0.6rem; }
.market p { font-size: 0.85rem; color: var(--paper-faint); margin: 0; }

/* ---------- RFQ / contact ---------- */

.rfq__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.contact-list { margin-top: 2.25rem; display: grid; gap: 1.25rem; }
.contact-list__item { padding-top: 1.1rem; border-top: 1px solid var(--line); }
.contact-list__label {
  display: block;
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-faint);
  margin-bottom: 0.4rem;
}
.contact-list__value { color: var(--paper); font-size: 1rem; }
.contact-list a.contact-list__value { transition: color 0.35s var(--ease); word-break: break-word; }
.contact-list a.contact-list__value:hover { color: var(--gold); }

.form { display: grid; gap: 1.4rem; }
.form__row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; }
.field { display: grid; gap: 0.5rem; }
.field > label {
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-faint);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.75rem 0;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--paper);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  outline: none;
  transition: border-color 0.35s var(--ease);
}
.field textarea { resize: vertical; min-height: 96px; }
.field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--paper-faint) 50%),
    linear-gradient(135deg, var(--paper-faint) 50%, transparent 50%);
  background-position: calc(100% - 12px) 1.15rem, calc(100% - 7px) 1.15rem;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
.field select option { background: var(--ink-700); color: var(--paper); }
.field input:focus,
.field select:focus,
.field textarea:focus { border-bottom-color: var(--gold); }
.field input::placeholder,
.field textarea::placeholder { color: #514b44; }

.form__hint { font-size: 0.75rem; color: var(--paper-faint); margin: 0; }
.form__status {
  font-size: 0.82rem;
  color: var(--gold);
  min-height: 1.2em;
  margin: 0;
}

/* ---------- footer ---------- */

.footer { background: var(--ink-900); border-top: 1px solid var(--line); }
.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: clamp(1.75rem, 3.5vw, 3.5rem);
  padding-block: clamp(3rem, 5vw, 4.5rem);
}
.footer h4 {
  font-family: var(--font-body);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper-faint);
  margin: 0 0 1.1rem;
}
.footer__list { display: grid; gap: 0.65rem; list-style: none; margin: 0; padding: 0; }
.footer__list a,
.footer__list span { font-size: 0.85rem; color: var(--paper-dim); transition: color 0.35s var(--ease); }
.footer__list a:hover { color: var(--gold); }
.footer__brand .brand__mark { font-size: 1.35rem; }
.footer__brand p { margin-top: 1rem; font-size: 0.82rem; color: var(--paper-faint); max-width: 34ch; }
.footer__bar {
  border-top: 1px solid var(--line);
  padding-block: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--paper-faint);
}

/* ---------- floating WhatsApp ---------- */

.wa-float {
  position: fixed;
  right: clamp(1rem, 2.5vw, 2rem);
  bottom: calc(clamp(1rem, 2.5vw, 2rem) + env(safe-area-inset-bottom, 0px));
  z-index: 95;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.75rem 1.15rem;
  background: var(--ink-600);
  border: 1px solid var(--gold-soft);
  color: var(--gold);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
}
.wa-float:hover { background: var(--gold); color: var(--ink-900); border-color: var(--gold); }
.wa-float svg { width: 16px; height: 16px; fill: currentColor; }

/* ---------- inner page header ---------- */

.page-head {
  padding-top: calc(var(--header-h) + clamp(3rem, 6vw, 5rem));
  padding-bottom: clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
}
.page-head h1 { font-size: clamp(2.2rem, 4.6vw, 3.8rem); margin-bottom: 1.1rem; }
.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-faint);
  margin-bottom: 1.6rem;
}
.crumbs a { transition: color 0.35s var(--ease); }
.crumbs a:hover { color: var(--gold); }

/* ---------- filters ---------- */

.filters {
  position: sticky;
  top: var(--header-h);
  z-index: 60;
  background: rgba(14, 13, 12, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  padding-block: 1.1rem;
}
.filters__inner { display: grid; gap: 1rem; }
.filters__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}
.filters__label {
  font-size: 0.56rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper-faint);
  margin-right: 0.5rem;
  min-width: 62px;
}
.chip {
  padding: 0.45rem 0.85rem;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-dim);
  border: 1px solid var(--line);
  transition: color 0.35s var(--ease), border-color 0.35s var(--ease),
    background-color 0.35s var(--ease);
}
.chip:hover { color: var(--paper); border-color: var(--gold-soft); }
.chip[aria-pressed="true"] { background: var(--gold); border-color: var(--gold); color: var(--ink-900); }
.chip__count { opacity: 0.55; margin-left: 0.4em; }

.filters__search { display: flex; align-items: center; gap: 0.75rem; }
.filters__search input {
  width: min(320px, 100%);
  padding: 0.6rem 0;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--paper);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  outline: none;
  transition: border-color 0.35s var(--ease);
}
.filters__search input:focus { border-bottom-color: var(--gold); }
.filters__search input::placeholder { color: #514b44; }
.filters__count {
  margin-left: auto;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.empty-state {
  padding: clamp(3rem, 7vw, 6rem) 0;
  text-align: center;
  color: var(--paper-faint);
}

/* ---------- product detail ---------- */

.pdp__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
  gap: clamp(2rem, 4vw, 4rem);
  align-items: start;
}
.pdp__stage {
  position: relative;
  background: var(--ink-600);
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.pdp__stage img { width: 100%; height: 100%; object-fit: cover; object-position: center 38%; }
.pdp__thumbs {
  margin-top: 0.75rem;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.5rem;
}
.pdp__thumb {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 1px solid transparent;
  background: var(--ink-600);
  transition: border-color 0.35s var(--ease), opacity 0.35s var(--ease);
  opacity: 0.55;
}
.pdp__thumb img { width: 100%; height: 100%; object-fit: cover; object-position: center 38%; }
.pdp__thumb:hover { opacity: 1; }
.pdp__thumb[aria-current="true"] { border-color: var(--gold); opacity: 1; }

.pdp__aside { position: sticky; top: calc(var(--header-h) + 1.5rem); }
.pdp__title { margin-bottom: 0.5rem; }
.pdp__cn {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 1.5vw, 1.4rem);
  color: var(--gold);
  display: block;
  margin-bottom: 0.35rem;
}
.pdp__desc { margin-block: 1.4rem; padding-top: 1.4rem; border-top: 1px solid var(--line); }

.spec-table { width: 100%; border-collapse: collapse; margin-block: 0.5rem 1.6rem; }
.spec-table th,
.spec-table td {
  text-align: left;
  vertical-align: top;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.85rem;
}
.spec-table th {
  width: 40%;
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-faint);
  padding-right: 1rem;
}
.spec-table td { color: var(--paper-dim); }

.chips-static { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chips-static li {
  list-style: none;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-dim);
  border: 1px solid var(--line);
  padding: 0.4rem 0.7rem;
}

.pdp__cta { display: grid; gap: 0.75rem; margin-top: 1.75rem; }

.pdp__section { margin-top: clamp(3rem, 6vw, 5rem); }
.pdp__gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(0.75rem, 1.4vw, 1.25rem);
}
.pdp__gallery figure { margin: 0; }
.pdp__gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; object-position: center 38%; background: var(--ink-600); }
.pdp__gallery figcaption {
  margin-top: 0.6rem;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-faint);
}

.related-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(0.75rem, 1.5vw, 1.5rem); }

/* ---------- reveal animation ---------- */

.reveal { opacity: 0; transform: translateY(18px); }
.reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.62s var(--ease) var(--d, 0ms), transform 0.62s var(--ease) var(--d, 0ms);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--gold);
  color: var(--ink-900);
  padding: 0.75rem 1.25rem;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ---------- responsive ---------- */

@media (max-width: 1100px) {
  .grid-products { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .related-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .pdp__grid { grid-template-columns: 1fr; }
  .pdp__aside { position: static; }
  .pdp__thumbs { grid-template-columns: repeat(6, 1fr); }
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--ink-800);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--gutter) 1.5rem;
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
  }
  .nav.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav__link {
    padding-block: 1rem;
    border-bottom: 1px solid var(--line-soft);
    font-size: 0.82rem;
  }
  .header__actions .btn--gold { display: none; }

  .factory__grid,
  .rfq__grid { grid-template-columns: 1fr; }
  .trustbar__grid { grid-template-columns: repeat(2, 1fr); }
  .trustbar__item { border-left: 1px solid var(--line-soft); }
  .trustbar__item:nth-child(odd) { border-left: 0; padding-left: 0; }
  .trustbar__item:nth-child(n + 3) { border-top: 1px solid var(--line-soft); }
  .markets { grid-template-columns: repeat(2, 1fr); }
  .videos { grid-template-columns: 1fr; }
  .collections__grid { grid-template-columns: repeat(6, 1fr); }
  .tile--wide { grid-column: span 3; }
  .pdp__gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero__scroll { display: none; }
}

@media (max-width: 620px) {
  :root { --header-h: 62px; }
  .grid-products { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .related-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tile--wide { grid-column: span 3; }
  .trustbar__grid { grid-template-columns: 1fr; }
  .trustbar__item { border-left: 0; padding-left: 0; border-top: 1px solid var(--line-soft); }
  .trustbar__item:first-child { border-top: 0; }
  .markets { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .pdp__thumbs { grid-template-columns: repeat(4, 1fr); }
  .pdp__gallery { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .filters { position: static; }
  .filters__label { min-width: auto; width: 100%; }
  .wa-float span { display: none; }
  .wa-float { padding: 0.85rem; }
  .hero { min-height: 92svh; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .card:hover .card__media img,
  .tile:hover .tile__media img { transform: none; }
}

/* =========================================================
   i18n layer
   1. Per-script typography (font stacks, tracking, leading)
   2. RTL mirroring for Arabic
   The base sheet stays LTR/physical; everything that must flip
   is overridden here so the two directions cannot drift apart.
   ========================================================= */

/* ---------- 1. per-language font stacks ---------- */

[data-lang="ru"] {
  --font-display: "Playfair Display", "PT Serif", Georgia, serif;
  --font-body: "Manrope", "Noto Sans", system-ui, sans-serif;
}
[data-lang="pt"] {
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Manrope", "Noto Sans", system-ui, sans-serif;
}
[data-lang="hi"] {
  /* Fraunces/Manrope first so Latin trade names (Calacatta, Monet) keep the
     brand face; browsers fall through to the Devanagari face for Hindi glyphs. */
  --font-display: "Fraunces", "Noto Serif Devanagari", "Nirmala UI", Georgia, serif;
  --font-body: "Manrope", "Noto Sans Devanagari", "Nirmala UI", system-ui, sans-serif;
}
[data-lang="ar"] {
  /* Same pattern: Latin first, Arabic falls through to Amiri / Noto Sans Arabic. */
  --font-display: "Fraunces", "Amiri", "Noto Naskh Arabic", "Traditional Arabic", serif;
  --font-body: "Manrope", "Noto Sans Arabic", "Segoe UI", Tahoma, sans-serif;
}

/* Devanagari and Arabic sit smaller on the same pixel size and need headroom
   for matras / diacritics, so raise size and leading for those two only. */
[data-lang="hi"] body,
[data-lang="ar"] body {
  font-size: 1.04rem;
  line-height: 1.95;
}
[data-lang="hi"] h1, [data-lang="ar"] h1 { line-height: 1.38; letter-spacing: 0; }
[data-lang="hi"] h2, [data-lang="ar"] h2 { line-height: 1.44; letter-spacing: 0; }
[data-lang="hi"] h3, [data-lang="ar"] h3 { line-height: 1.5; letter-spacing: 0; }
[data-lang="hi"] .lede, [data-lang="ar"] .lede { line-height: 1.95; }

/* Arabic is a joined script: letter-spacing breaks the letterforms and
   uppercase has no effect. Neutralise the Latin label treatment for Arabic
   UI labels, but leave embedded Latin (trade names, units) untouched. */
[data-lang="ar"] .eyebrow,
[data-lang="ar"] .brand__sub,
[data-lang="ar"] .nav__link,
[data-lang="ar"] .btn,
[data-lang="ar"] .text-link,
[data-lang="ar"] .chip,
[data-lang="ar"] .crumbs,
[data-lang="ar"] .field > label,
[data-lang="ar"] .footer h4,
[data-lang="ar"] .footer__bar,
[data-lang="ar"] .market__idx,
[data-lang="ar"] .tile__count,
[data-lang="ar"] .trustbar__label,
[data-lang="ar"] .spec-table th,
[data-lang="ar"] .card__foot,
[data-lang="ar"] .filters__label,
[data-lang="ar"] .filters__count,
[data-lang="ar"] .contact-list__label,
[data-lang="ar"] .card__tag,
[data-lang="ar"] .hero__meta,
[data-lang="ar"] .hero__scroll,
[data-lang="ar"] .pdp__gallery figcaption,
[data-lang="ar"] .lang-switch__link {
  letter-spacing: 0;
  text-transform: none;
}

/* Hindi labels run longer than English in the same box; give chips and nav
   a little more room rather than letting them clip. */
[data-lang="hi"] .chip { letter-spacing: 0.06em; }
[data-lang="hi"] .filters__label { min-width: 78px; }

/* ---------- language switcher ---------- */

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-inline-start: 0.5rem;
}
.lang-switch__link {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-faint);
  padding-block: 0.35rem;
  border-bottom: 1px solid transparent;
  transition: color 0.35s var(--ease), border-color 0.35s var(--ease);
}
.lang-switch__link:hover { color: var(--paper); }
.lang-switch__link[aria-current="true"] {
  color: var(--gold);
  border-bottom-color: var(--gold-soft);
}

/* mobile: the switcher lives inside the slide-down panel */
@media (max-width: 900px) {
  .header__actions .lang-switch { display: none; }
  .nav__lang {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.1rem;
    padding-top: 1.15rem;
    margin-top: 0.4rem;
    border-top: 1px solid var(--line-soft);
  }
  .nav__lang .lang-switch__link { font-size: 0.72rem; }
}
@media (min-width: 901px) {
  .nav__lang { display: none; }
}

/* ---------- collection tile blurb ---------- */

.tile__blurb {
  display: block;
  margin-top: 0.45rem;
  font-size: 0.76rem;
  line-height: 1.5;
  color: var(--paper-dim);
  max-width: 26ch;
}

/* =========================================================
   2. RTL mirroring (Arabic)
   ========================================================= */

[dir="rtl"] .header__inner { flex-direction: row-reverse; }
[dir="rtl"] .nav { flex-direction: row-reverse; }
[dir="rtl"] .brand { text-align: right; }

/* trust bar hairlines sit on the opposite edge */
[dir="rtl"] .trustbar__item {
  border-left: 0;
  border-right: 1px solid var(--line-soft);
}
[dir="rtl"] .trustbar__item:first-child {
  border-right: 0;
  padding-right: 0;
  padding-left: clamp(1rem, 2vw, 2rem);
}

/* scroll cue and floating WhatsApp button swap sides */
[dir="rtl"] .hero__scroll {
  right: auto;
  left: var(--gutter);
}
[dir="rtl"] .wa-float {
  right: auto;
  left: clamp(1rem, 2.5vw, 2rem);
}

/* hero + band scrims must fall away from the text edge */
[dir="rtl"] .hero__scrim {
  background:
    linear-gradient(180deg, rgba(10, 9, 8, 0.72) 0%, rgba(10, 9, 8, 0.28) 34%,
      rgba(10, 9, 8, 0.86) 78%, var(--ink-800) 100%),
    linear-gradient(270deg, rgba(10, 9, 8, 0.78) 0%, rgba(10, 9, 8, 0.2) 58%,
      rgba(10, 9, 8, 0.42) 100%);
}
[dir="rtl"] .band::after {
  background: linear-gradient(270deg, rgba(10, 9, 8, 0.94) 0%, rgba(10, 9, 8, 0.7) 46%,
    rgba(10, 9, 8, 0.28) 100%);
}

/* arrow glyph on text links points the other way */
[dir="rtl"] .text-link::after { content: "\2190"; }
[dir="rtl"] .text-link:hover::after { transform: translateX(-4px); }

/* product badge */
[dir="rtl"] .card__tag {
  left: auto;
  right: 0.8rem;
}

/* filter row spacing */
[dir="rtl"] .filters__label {
  margin-right: 0;
  margin-left: 0.5rem;
}
[dir="rtl"] .chip__count {
  margin-left: 0;
  margin-right: 0.4em;
}
[dir="rtl"] .filters__count {
  margin-left: 0;
  margin-right: auto;
}

/* spec table reads right-to-left */
[dir="rtl"] .spec-table th,
[dir="rtl"] .spec-table td { text-align: right; }
[dir="rtl"] .spec-table th {
  padding-right: 0;
  padding-left: 1rem;
}

/* select chevron */
[dir="rtl"] .field select {
  background-position: 12px 1.15rem, 7px 1.15rem;
}

/* skip link */
[dir="rtl"] .skip-link { left: auto; right: -9999px; }
[dir="rtl"] .skip-link:focus { left: auto; right: 1rem; }

/* mirrors inside the responsive breakpoints, where the base sheet
   reasserts physical borders for the stacked trust bar */
@media (max-width: 900px) {
  [dir="rtl"] .trustbar__item {
    border-left: 0;
    border-right: 1px solid var(--line-soft);
  }
  [dir="rtl"] .trustbar__item:nth-child(odd) {
    border-right: 0;
    padding-right: 0;
    padding-left: clamp(1rem, 2vw, 2rem);
  }
}

@media (max-width: 620px) {
  [dir="rtl"] .trustbar__item { border-right: 0; padding-right: 0; }
  [dir="rtl"] .trustbar__item:first-child { padding-left: 0; }
}

/* filtered-out cards: the base sheet sets display:block on .card, which would
   otherwise beat the hidden attribute. */
[hidden] { display: none !important; }