/* =========================================================
   MENCE TRANSMISSION — 俄语站主样式表
   Reducer & Gear Motor / Редукторы MENCE
   ========================================================= */

:root {
  --navy: #0a1b32;
  --navy-2: #102842;
  --navy-3: #17395c;
  --steel: #1f4e79;
  --accent: #c8963e;
  --accent-2: #e0b25c;
  --accent-dark: #a87a29;
  --ink: #14202e;
  --body: #4a5a6b;
  --muted: #7c8b9b;
  --line: #e2e8ef;
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --bg-soft-2: #eef2f6;
  --radius: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(10, 27, 50, .06), 0 4px 14px rgba(10, 27, 50, .05);
  --shadow: 0 10px 30px rgba(10, 27, 50, .09);
  --shadow-lg: 0 24px 60px rgba(10, 27, 50, .16);
  --container: 1240px;
  --header-h: 86px;
  --ease: cubic-bezier(.4, 0, .2, 1);
  --font: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 10px);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.72;
  color: var(--body);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; border: 0; }

a { color: var(--steel); text-decoration: none; transition: color .25s var(--ease); }
a:hover { color: var(--accent-dark); }

h1, h2, h3, h4, h5 {
  margin: 0 0 .6em;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -.015em;
}

h1 { font-size: clamp(1.9rem, 4.2vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 2.9vw, 2.35rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); }
h4 { font-size: 1.05rem; }

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0 0 1.1em; padding-left: 1.25em; }
li { margin-bottom: .45em; }

strong { color: var(--ink); font-weight: 600; }

hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

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

/* ---------------- Layout helpers ---------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: clamp(3.5rem, 7vw, 6.5rem) 0; position: relative; }
.section--soft { background: var(--bg-soft); }
.section--navy { background: var(--navy); color: rgba(255, 255, 255, .78); }
.section--navy h2, .section--navy h3, .section--navy h4 { color: #fff; }
.section--tight { padding: clamp(2.5rem, 4.5vw, 4rem) 0; }

.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.text-center { text-align: center; }
.mb-0 { margin-bottom: 0 !important; }
.mt-2 { margin-top: 1.25rem; }
.mt-3 { margin-top: 2rem; }
.mt-4 { margin-top: 3rem; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-dark);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--accent);
  display: block;
}
.section--navy .eyebrow { color: var(--accent-2); }

.section-head { max-width: 780px; margin: 0 auto clamp(2rem, 4vw, 3.5rem); text-align: center; }
.section-head .eyebrow { justify-content: center; }
.section-head p { color: var(--muted); font-size: 1.02rem; }
.section--navy .section-head p { color: rgba(255, 255, 255, .68); }

.lead { font-size: 1.1rem; color: var(--body); }

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 32px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-size: .93rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all .28s var(--ease);
  position: relative;
  overflow: hidden;
}
.btn:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 26px rgba(200, 150, 62, .32); }
.btn:active { transform: translateY(0); }

.btn--ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, .45);
  color: #fff;
}
.btn--ghost:hover { background: rgba(255, 255, 255, .1); border-color: #fff; color: #fff; box-shadow: none; }

.btn--dark { background: var(--navy); }
.btn--dark:hover { background: var(--navy-3); box-shadow: 0 12px 26px rgba(10, 27, 50, .28); }

.btn--line { background: transparent; border-color: var(--line); color: var(--ink); }
.btn--line:hover { background: var(--navy); border-color: var(--navy); color: #fff; box-shadow: none; }

.btn--sm { padding: 11px 22px; font-size: .82rem; }
.btn--block { width: 100%; }

.btn svg { width: 16px; height: 16px; flex: none; }

.btn-row { display: flex; flex-wrap: wrap; gap: 16px; }
.btn-row--center { justify-content: center; }

/* ---------------- Header ---------------- */
.topbar {
  background: var(--navy);
  color: rgba(255, 255, 255, .66);
  font-size: .8rem;
  letter-spacing: .02em;
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 42px;
}
.topbar__list { display: flex; align-items: center; gap: 24px; list-style: none; margin: 0; padding: 0; }
.topbar__list li { margin: 0; display: flex; align-items: center; gap: 7px; }
.topbar__list svg { width: 13px; height: 13px; color: var(--accent); flex: none; }
.topbar__list a { color: inherit; }
.topbar__list a:hover { color: var(--accent-2); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s var(--ease);
}
.site-header.is-stuck { box-shadow: 0 6px 24px rgba(10, 27, 50, .09); }

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  min-height: var(--header-h);
}

.brand { display: flex; align-items: center; flex: none; }
.brand img { width: auto; height: 40px; }
.brand__text { display: none; }

.nav { display: flex; align-items: center; }
.nav__list { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav__list li { margin: 0; }
.nav__list a {
  display: block;
  padding: 10px 16px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: .01em;
  position: relative;
  border-radius: var(--radius);
}
.nav__list a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav__list a:hover { color: var(--steel); }
.nav__list a:hover::after { transform: scaleX(1); }
.nav__list a[aria-current="page"] { color: var(--steel); }
.nav__list a[aria-current="page"]::after { transform: scaleX(1); }

.header__cta { flex: none; }

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
  position: relative;
  flex: none;
}
.nav-toggle span {
  position: absolute;
  left: 13px;
  right: 13px;
  height: 2px;
  background: var(--navy);
  transition: all .3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 16px; }
.nav-toggle span:nth-child(2) { top: 22px; }
.nav-toggle span:nth-child(3) { top: 28px; }
.nav-toggle.is-open span:nth-child(1) { top: 22px; transform: rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { top: 22px; transform: rotate(-45deg); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  min-height: clamp(480px, 62vh, 640px);
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  background: var(--navy);
}
.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url("../img/banner.jpg");
  background-size: cover;
  background-position: center;
  transform: scale(1.04);
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(6, 18, 33, .93) 0%, rgba(8, 24, 43, .82) 42%, rgba(10, 30, 52, .44) 100%);
}
.hero .container { position: relative; z-index: 2; padding-top: clamp(3rem, 6vw, 5rem); padding-bottom: clamp(3rem, 6vw, 5rem); }
.hero__inner { max-width: 720px; }
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px 7px 8px;
  border-radius: 100px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .18);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 24px;
}
.hero__badge b {
  background: var(--accent);
  color: #fff;
  border-radius: 100px;
  padding: 2px 10px;
  font-size: .7rem;
}
.hero h1 { color: #fff; margin-bottom: 1.1rem; }
.hero h1 em { font-style: normal; color: var(--accent-2); }
.hero__sub {
  font-size: clamp(1rem, 1.4vw, 1.14rem);
  color: rgba(255, 255, 255, .8);
  max-width: 620px;
  margin-bottom: 2rem;
}
.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 40px;
  margin-top: 2.75rem;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(255, 255, 255, .16);
}
.hero__stat b {
  display: block;
  font-size: 1.7rem;
  color: #fff;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
}
.hero__stat span { font-size: .8rem; color: rgba(255, 255, 255, .6); letter-spacing: .04em; }

/* Page hero (inner pages) */
.page-hero {
  position: relative;
  padding: clamp(2.75rem, 5.5vw, 4.5rem) 0;
  color: #fff;
  background: linear-gradient(105deg, var(--navy) 0%, var(--navy-2) 55%, var(--navy-3) 100%);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 150, 62, .22), transparent 68%);
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("../img/banner.jpg");
  background-size: cover;
  background-position: center 40%;
  opacity: .14;
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; margin-bottom: .55rem; }
.page-hero p { color: rgba(255, 255, 255, .74); max-width: 720px; margin-bottom: 0; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0 0 1.15rem;
  padding: 0;
  font-size: .8rem;
  color: rgba(255, 255, 255, .55);
}
.breadcrumb li { margin: 0; }
.breadcrumb a { color: rgba(255, 255, 255, .78); }
.breadcrumb a:hover { color: var(--accent-2); }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; opacity: .5; }

/* ---------------- Cards ---------------- */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: #cfd9e4; }
.card__media { position: relative; overflow: hidden; background: var(--bg-soft-2); aspect-ratio: 4 / 3; }
.card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.card:hover .card__media img { transform: scale(1.06); }
.card__body { padding: 26px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.card__body h3 { margin-bottom: .5rem; }
.card__body p { color: var(--body); font-size: .93rem; }
.card__link {
  margin-top: auto;
  padding-top: 1.1rem;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.card__link::after { content: "→"; transition: transform .3s var(--ease); }
.card:hover .card__link::after { transform: translateX(5px); }

.card--plain { border: 0; background: transparent; }
.card--plain:hover { transform: none; box-shadow: none; }

/* product card variant */
.product-card .card__media { aspect-ratio: 4 / 3; padding: 18px; background: #fff; border-bottom: 1px solid var(--line); }
.product-card .card__media img { object-fit: contain; }
.product-card .card__tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: var(--navy);
  color: #fff;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 5px 11px;
  border-radius: 2px;
}
.product-card .spec-list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  font-size: .86rem;
}
.product-card .spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  margin: 0;
  border-bottom: 1px dashed var(--line);
  color: var(--muted);
}
.product-card .spec-list li:last-child { border-bottom: 0; }
.product-card .spec-list b { color: var(--ink); font-weight: 600; }

/* ---------------- Feature / value blocks ---------------- */
.feature { display: flex; gap: 20px; }
.feature__icon {
  flex: none;
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: rgba(200, 150, 62, .1);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature__icon svg { width: 26px; height: 26px; }
.feature h3 { font-size: 1.05rem; margin-bottom: .35rem; }
.feature p { font-size: .92rem; margin-bottom: 0; }

.value-card {
  padding: 34px 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: all .35s var(--ease);
}
.value-card:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.value-card__num {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--accent);
  margin-bottom: 14px;
  display: block;
}
.value-card h3 { font-size: 1.12rem; }
.value-card p { font-size: .93rem; margin-bottom: 0; }

/* ---------------- Split (about) ---------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.split--reverse .split__media { order: 2; }
.split__media { position: relative; }
.split__media img { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.split__media--frame::before {
  content: "";
  position: absolute;
  inset: 20px -20px -20px 20px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-lg);
  z-index: -1;
}
.split__content h2 { margin-bottom: 1.1rem; }

.badge-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 1.75rem;
}
.badge-grid span {
  display: block;
  text-align: center;
  padding: 12px 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--navy);
  background: #fff;
}

/* ---------------- Stats strip ---------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, .12);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.stats__item { padding: 34px 22px; background: var(--navy); text-align: center; }
.stats__item b {
  display: block;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--accent-2);
  line-height: 1.1;
  letter-spacing: -.02em;
}
.stats__item span { font-size: .84rem; color: rgba(255, 255, 255, .66); }

/* ---------------- Workshop gallery ---------------- */
.gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.gallery__item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  aspect-ratio: 3 / 2;
  background: var(--bg-soft-2);
  margin: 0;
}
.gallery__item img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.gallery__item:hover img { transform: scale(1.07); }
.gallery__item figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 30px 16px 14px;
  background: linear-gradient(to top, rgba(6, 18, 33, .82), transparent);
  color: #fff;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .04em;
}

/* ---------------- Applications ---------------- */
.app-card {
  position: relative;
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--navy);
  margin: 0;
}
.app-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.app-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6, 18, 33, .88) 8%, rgba(6, 18, 33, .05) 62%);
  transition: opacity .3s var(--ease);
}
.app-card:hover img { transform: scale(1.06); }
.app-card__label {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 20px;
  z-index: 2;
  color: #fff;
}
.app-card__label b { display: block; font-size: 1.02rem; font-weight: 700; margin-bottom: 3px; }
.app-card__label span { font-size: .78rem; color: rgba(255, 255, 255, .66); letter-spacing: .04em; }

/* ---------------- Accordion / FAQ ---------------- */
.faq { border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__q {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  border: 0;
  background: none;
  text-align: left;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  line-height: 1.5;
}
.faq__q:hover { color: var(--steel); }
.faq__q i {
  flex: none;
  width: 28px; height: 28px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-style: normal;
  font-size: 1.1rem;
  color: var(--accent-dark);
  transition: all .3s var(--ease);
  line-height: 1;
}
.faq__item.is-open .faq__q i { background: var(--accent); border-color: var(--accent); color: #fff; transform: rotate(45deg); }
.faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s var(--ease);
}
.faq__a > div { padding: 0 60px 24px 0; color: var(--body); font-size: .95rem; }
.faq__a > div > *:last-child { margin-bottom: 0; }

/* ---------------- Tables ---------------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; }
table.spec {
  width: 100%;
  border-collapse: collapse;
  font-size: .92rem;
  min-width: 560px;
}
table.spec th, table.spec td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); }
table.spec thead th {
  background: var(--navy);
  color: #fff;
  font-weight: 600;
  font-size: .82rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  white-space: nowrap;
}
table.spec tbody tr:nth-child(even) { background: var(--bg-soft); }
table.spec tbody tr:last-child td { border-bottom: 0; }
table.spec td:first-child { font-weight: 600; color: var(--ink); }
table.spec tbody tr:hover { background: #eef4fa; }

/* ---------------- CTA band ---------------- */
.cta-band {
  position: relative;
  padding: clamp(3rem, 5.5vw, 4.75rem) 0;
  background: linear-gradient(105deg, var(--navy) 0%, var(--navy-2) 60%, var(--steel) 100%);
  color: #fff;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  left: -80px; bottom: -140px;
  width: 420px; height: 420px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .1);
}
.cta-band::after {
  content: "";
  position: absolute;
  right: -100px; top: -160px;
  width: 460px; height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 150, 62, .2), transparent 70%);
}
.cta-band .container {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-band h2 { color: #fff; margin-bottom: .5rem; }
.cta-band p { color: rgba(255, 255, 255, .74); margin-bottom: 0; max-width: 620px; }

/* ---------------- Forms ---------------- */
.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3.5vw, 44px);
  box-shadow: var(--shadow-sm);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: .01em;
}
.field label .req { color: #c0392b; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  font-family: inherit;
  font-size: .94rem;
  color: var(--ink);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
  appearance: none;
}
.field input::placeholder,
.field textarea::placeholder { color: #a8b4c0; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(200, 150, 62, .16);
}
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237c8b9b' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 15px center;
  padding-right: 38px;
  cursor: pointer;
}
.field textarea { resize: vertical; min-height: 140px; }

.checkbox { display: flex; gap: 10px; align-items: flex-start; font-size: .83rem; color: var(--muted); line-height: 1.55; }
.checkbox input { width: 17px; height: 17px; margin-top: 3px; accent-color: var(--accent); flex: none; }
.checkbox a { text-decoration: underline; }

/* honeypot — visually hidden but not display:none */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  top: auto !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.form-note { font-size: .8rem; color: var(--muted); margin-top: 14px; }

.form-alert {
  display: none;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  border-radius: var(--radius);
  font-size: .9rem;
  margin-bottom: 22px;
  line-height: 1.6;
}
.form-alert.is-visible { display: flex; }
.form-alert--ok { background: #eefaf2; border: 1px solid #b7e4c7; color: #1e6b3a; }
.form-alert--err { background: #fdf0ee; border: 1px solid #f3c4bb; color: #96301f; }
.form-alert svg { width: 20px; height: 20px; flex: none; margin-top: 1px; }

.btn.is-loading { opacity: .7; pointer-events: none; }
.btn.is-loading::after {
  content: "";
  width: 14px; height: 14px;
  border: 2px solid rgba(255, 255, 255, .4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.contact-aside {
  background: var(--navy);
  color: rgba(255, 255, 255, .74);
  border-radius: var(--radius-lg);
  padding: clamp(26px, 3vw, 40px);
  position: relative;
  overflow: hidden;
}
.contact-aside::after {
  content: "";
  position: absolute;
  right: -90px; bottom: -110px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 150, 62, .22), transparent 70%);
}
.contact-aside h3 { color: #fff; position: relative; z-index: 2; }
.contact-aside p { font-size: .92rem; position: relative; z-index: 2; }
.contact-aside ul { list-style: none; margin: 1.5rem 0 0; padding: 0; position: relative; z-index: 2; }
.contact-aside li {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid rgba(255, 255, 255, .12);
  margin: 0;
  font-size: .9rem;
}
.contact-aside li svg { width: 18px; height: 18px; color: var(--accent-2); flex: none; margin-top: 3px; }
.contact-aside li b { display: block; color: #fff; font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 2px; font-weight: 700; }

/* ---------------- Product detail ---------------- */
.product-detail { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(2rem, 4vw, 3.5rem); align-items: flex-start; }
.product-gallery { position: sticky; top: calc(var(--header-h) + 24px); }
.product-gallery__main {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  padding: clamp(16px, 3vw, 40px);
  box-shadow: var(--shadow-sm);
}
.product-gallery__main img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; }

.product-info h1 { font-size: clamp(1.6rem, 2.8vw, 2.3rem); margin-bottom: .6rem; }
.product-info .product-no {
  display: inline-block;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: rgba(200, 150, 62, .1);
  padding: 5px 12px;
  border-radius: 2px;
  margin-bottom: 14px;
}
.product-info .lead { margin-bottom: 1.5rem; }

.kv-list { list-style: none; margin: 0 0 1.75rem; padding: 0; display: grid; gap: 0; }
.kv-list li {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 16px;
  padding: 11px 0;
  margin: 0;
  border-bottom: 1px solid var(--line);
  font-size: .91rem;
}
.kv-list li span { color: var(--muted); }
.kv-list li b { color: var(--ink); font-weight: 600; }

.chips { display: flex; flex-wrap: wrap; gap: 9px; list-style: none; padding: 0; margin: 0 0 1.75rem; }
.chips li {
  margin: 0;
  padding: 7px 14px;
  border-radius: 100px;
  background: var(--bg-soft-2);
  border: 1px solid var(--line);
  font-size: .8rem;
  font-weight: 600;
  color: var(--navy);
}

.content-block h2 { margin-top: 2.5rem; }
.content-block h2:first-child { margin-top: 0; }
.content-block h3 { margin-top: 1.75rem; }

.callout {
  border-left: 3px solid var(--accent);
  background: var(--bg-soft);
  padding: 18px 22px;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: .93rem;
  margin: 1.75rem 0;
}
.callout p:last-child { margin-bottom: 0; }

/* ---------------- Related products strip ---------------- */
.related { background: var(--bg-soft); }

/* ---------------- Footer ---------------- */
.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, .62);
  font-size: .89rem;
  padding-top: clamp(3rem, 5vw, 4.5rem);
}
.site-footer a { color: rgba(255, 255, 255, .72); }
.site-footer a:hover { color: var(--accent-2); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.25fr;
  gap: 40px;
  padding-bottom: 3rem;
}
.footer-brand img {
  height: 38px;
  width: auto;
  background: #fff;
  padding: 7px 12px;
  border-radius: var(--radius);
  margin-bottom: 20px;
}
.footer-brand p { font-size: .87rem; line-height: 1.7; color: rgba(255, 255, 255, .55); }
.site-footer h4 {
  color: #fff;
  font-size: .82rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  font-weight: 700;
}
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin: 0 0 .6rem; }
.footer-links a { font-size: .88rem; }

.footer-contact { list-style: none; margin: 0; padding: 0; }
.footer-contact li { display: flex; gap: 11px; margin-bottom: 1rem; font-size: .87rem; line-height: 1.6; }
.footer-contact svg { width: 16px; height: 16px; color: var(--accent); flex: none; margin-top: 4px; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 22px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-items: center;
  justify-content: space-between;
  font-size: .82rem;
  color: rgba(255, 255, 255, .42);
}
.footer-bottom nav { display: flex; gap: 22px; flex-wrap: wrap; }

/* ---------------- Back to top ---------------- */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 80;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 0;
  background: var(--navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .3s var(--ease);
  box-shadow: 0 8px 22px rgba(10, 27, 50, .28);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--accent); }
.to-top svg { width: 18px; height: 18px; }

/* ---------------- Scroll reveal ---------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .card:hover, .btn:hover { transform: none; }
}

/* ---------------- Responsive ---------------- */
@media (max-width: 1080px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-detail { grid-template-columns: 1fr; }
  .product-gallery { position: static; }
}

@media (max-width: 940px) {
  :root { --header-h: 72px; }

  .topbar { display: none; }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(10, 27, 50, .12);
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s var(--ease);
    display: block;
  }
  .nav.is-open { max-height: calc(100vh - var(--header-h)); overflow-y: auto; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; padding: 10px 24px 22px; }
  .nav__list a { padding: 14px 4px; border-bottom: 1px solid var(--line); border-radius: 0; font-size: .96rem; }
  .nav__list a::after { display: none; }
  .nav__list li:last-child a { border-bottom: 0; }
  .nav-toggle { display: block; }
  .header__cta { display: none; }

  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .split__media--frame::before { display: none; }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .badge-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid { grid-template-columns: 1fr; }
  .kv-list li { grid-template-columns: 1fr; gap: 2px; }
  .hero__stats { gap: 14px 28px; }
}

@media (max-width: 560px) {
  body { font-size: 15px; }
  .container { padding: 0 18px; }
  .grid-4 { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .cta-band .container { flex-direction: column; align-items: flex-start; }
  .btn { width: 100%; }
  .btn-row .btn { width: auto; flex: 1 1 auto; }
  .hero__stat b { font-size: 1.45rem; }
  .faq__a > div { padding-right: 0; }
  .brand img { height: 32px; }
}