/* ==========================================================================
   Fohow — сайт дистрибьютора. Общие стили.
   ========================================================================== */

:root {
  --red: #7d1128;        /* вишнёвый */
  --red-dark: #560b1c;   /* тёмная вишня */
  --red-light: #a11d3a;
  --gold: #c9a227;
  --gold-light: #e6c65c;
  --ink: #2b2018;
  --muted: #6b5f57;
  --bg: #fdf8f2;
  --bg-soft: #f6ecdf;
  --card: #ffffff;
  --line: #e7ddce;
  --shadow: 0 6px 24px rgba(60, 30, 10, 0.08);
  --shadow-lg: 0 14px 40px rgba(60, 30, 10, 0.14);
  --radius: 14px;
  --radius-sm: 8px;
  --maxw: 1180px;
  --serif: Georgia, "Times New Roman", "PT Serif", serif;
  --sans: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  line-height: 1.2;
  color: var(--ink);
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.3rem; }

p { margin: 0 0 1em; }

a { color: var(--red); text-decoration: none; transition: color .2s; }
a:hover { color: var(--red-light); }

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

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 64px 0; }
.section--soft { background: var(--bg-soft); }
.section__head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section__head p { color: var(--muted); font-size: 1.1rem; }

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: .78rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 12px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform .15s, box-shadow .2s, background .2s, color .2s;
  white-space: nowrap;
}
.btn--primary { background: var(--red); color: #fff; box-shadow: var(--shadow); }
.btn--primary:hover { background: var(--red-dark); color: #fff; transform: translateY(-2px); }
.btn--gold { background: var(--gold); color: #3a2c05; }
.btn--gold:hover { background: var(--gold-light); color: #3a2c05; transform: translateY(-2px); }
.btn--ghost { border-color: var(--red); color: var(--red); background: transparent; }
.btn--ghost:hover { background: var(--red); color: #fff; }

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 247, 241, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}
.logo { display: flex; align-items: center; gap: 12px; font-family: var(--serif); perspective: 600px; }
.logo__mark {
  width: 52px; height: 52px; border-radius: 50%;
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  display: grid; place-items: center;
  box-shadow: 0 0 12px rgba(198,162,39,.35), var(--shadow);
  overflow: hidden;
  animation: phoenix-spin 4s ease-in-out infinite;
  transform-style: preserve-3d;
}
.logo__mark img {
  width: 130%; height: 130%;
  object-fit: cover;
  object-position: center 25%;
  filter: hue-rotate(-15deg) saturate(1.1) brightness(.75) drop-shadow(0 0 3px rgba(230,198,92,.6));
}
@keyframes phoenix-spin {
  0%   { transform: rotateY(0deg)   scale(1);   box-shadow: 0 0 12px rgba(198,162,39,.35), var(--shadow); }
  25%  { transform: rotateY(90deg)  scale(1.08); box-shadow: 0 0 20px rgba(230,198,92,.55), var(--shadow); }
  50%  { transform: rotateY(180deg) scale(1);    box-shadow: 0 0 12px rgba(198,162,39,.35), var(--shadow); }
  75%  { transform: rotateY(270deg) scale(1.08); box-shadow: 0 0 20px rgba(230,198,92,.55), var(--shadow); }
  100% { transform: rotateY(360deg) scale(1);    box-shadow: 0 0 12px rgba(198,162,39,.35), var(--shadow); }
}
.logo__text { line-height: 1.1; }
.logo__text strong { display: block; font-size: 1.35rem; color: var(--red); letter-spacing: 1px; }
.logo__text span { font-size: .72rem; text-transform: uppercase; letter-spacing: 2px; color: var(--muted); }

.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--ink);
  font-weight: 500;
  font-size: .98rem;
}
.nav a:hover, .nav a.active { background: var(--bg-soft); color: var(--red); }

/* Dropdown submenu */
.nav-drop { position: relative; }
.nav-drop__toggle { display: inline-flex; align-items: center; gap: 5px; }
.nav-drop__caret { font-size: .68em; transition: transform .2s; }
.nav-drop:hover .nav-drop__caret { transform: rotate(180deg); }
.nav-drop__menu {
  position: absolute; top: 100%; left: 0;
  display: none; flex-direction: column; min-width: 210px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-sm); box-shadow: var(--shadow-lg);
  padding: 8px; z-index: 60;
}
.nav-drop:hover .nav-drop__menu, .nav-drop:focus-within .nav-drop__menu { display: flex; }
.nav-drop__menu a { border-radius: 8px; white-space: nowrap; font-weight: 500; }

.nav-toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 44px; height: 44px; padding: 0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: ""; display: block; position: relative;
  width: 26px; height: 2px; background: var(--ink); margin: 0 auto;
  transition: .25s;
}
.nav-toggle span::before { position: absolute; top: -8px; }
.nav-toggle span::after { position: absolute; top: 8px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.open span::after { top: 0; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(201,162,39,.18), transparent 60%),
    linear-gradient(160deg, #fff 0%, var(--bg-soft) 100%);
  overflow: hidden;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 48px;
  align-items: center;
  padding: 72px 0;
}
.hero h1 { margin-bottom: .3em; }
.hero h1 .accent { color: var(--red); }
.hero__lead { font-size: 1.2rem; color: var(--muted); margin-bottom: 28px; max-width: 34ch; }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }
/* 3D-коин (вращается по оси Y) */
.hero__art {
  min-height: 400px;
  display: grid; place-items: center;
  perspective: 1100px;
}
.coin {
  position: relative;
  width: clamp(240px, 26vw, 360px);
  height: clamp(240px, 26vw, 360px);
  transform-style: preserve-3d;
  animation: coin-spin 10s linear infinite;
}
.coin__face {
  position: absolute; inset: 0;
  border-radius: 50%;
  overflow: hidden;
  display: grid; place-items: center;
  text-align: center;
  backface-visibility: hidden;
  box-shadow: var(--shadow-lg);
  font-family: var(--serif);
}
.coin__front {
  background:
    radial-gradient(circle at 35% 28%, rgba(230,198,92,.55), transparent 55%),
    linear-gradient(135deg, var(--red), var(--red-dark));
  border: 7px solid rgba(230,198,92,.45);
}
.coin__back {
  transform: rotateY(180deg);
  background:
    radial-gradient(circle at 65% 30%, #fff6d8, transparent 55%),
    linear-gradient(135deg, var(--gold), var(--gold-light));
  border: 7px solid rgba(125,17,40,.35);
}
.coin__logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
@keyframes coin-spin {
  from { transform: rotateY(0deg); }
  to   { transform: rotateY(360deg); }
}
@media (prefers-reduced-motion: reduce) {
  .coin { animation: none; }
}

/* ---------- Feature strip ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
  box-shadow: var(--shadow);
}
.feature__icon {
  width: 54px; height: 54px; margin: 0 auto 14px;
  border-radius: 14px;
  background: var(--bg-soft);
  display: grid; place-items: center;
  font-size: 1.6rem;
}
.feature h3 { font-size: 1.1rem; margin-bottom: 6px; }
.feature p { font-size: .95rem; color: var(--muted); margin: 0; }

/* ---------- Product grid ---------- */
.filters {
  display: flex; flex-wrap: wrap; gap: 10px;
  justify-content: center; margin-bottom: 36px;
}
.filter-btn {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  cursor: pointer;
  font-size: .95rem;
  color: var(--ink);
  transition: .2s;
}
.filter-btn:hover { border-color: var(--gold); }
.filter-btn.active { background: var(--red); color: #fff; border-color: var(--red); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.product-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex; flex-direction: column;
  transition: transform .18s, box-shadow .25s;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.product-card__img {
  aspect-ratio: 4/3;
  display: grid; place-items: center;
  position: relative;
  overflow: hidden;
  background: #fff;
}
.product-card__img img {
  width: 100%; height: 100%;
  object-fit: contain;
  padding: 12px;
}
.product-card__cat {
  position: absolute; top: 12px; left: 12px;
  background: rgba(255,255,255,.9);
  color: var(--red);
  font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  padding: 5px 10px; border-radius: 999px;
}
.product-card__body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.product-card__body h3 { font-size: 1.15rem; margin-bottom: 8px; }
.product-card__body p { color: var(--muted); font-size: .95rem; flex: 1; }
.product-card__foot {
  margin-top: 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
.product-card__price {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--red);
  white-space: nowrap;
}
.product-card__price--request {
  font-family: var(--sans);
  font-size: .92rem;
  font-weight: 600;
  color: var(--muted);
}
.price-tag.price-tag--request {
  font-family: var(--sans);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--muted);
}

/* Цена на странице продукта */
.price-tag {
  display: inline-block;
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--red);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 8px 20px;
  margin: 18px 0 4px;
}

/* 3D tilt */
.tilt, .tilt-strong { transition: transform .18s ease, box-shadow .25s; transform-style: preserve-3d; will-change: transform; }

/* ---------- Product detail ---------- */
.product-detail { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.product-detail__media {
  position: sticky; top: 100px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/5;
}
.product-detail__media { background: #fff; }
.product-detail__media img { width: 100%; height: 100%; object-fit: contain; padding: 24px; }
.product-detail__media svg { width: 100%; height: 100%; object-fit: cover; }
.product-detail h1 { margin-bottom: .2em; }
.product-detail .cat-tag {
  color: var(--gold); font-weight: 700; text-transform: uppercase;
  letter-spacing: 2px; font-size: .8rem;
}
.spec-block { margin: 26px 0; }
.spec-block h3 {
  display: flex; align-items: center; gap: 10px;
  color: var(--red); border-bottom: 2px solid var(--line);
  padding-bottom: 8px; margin-bottom: 14px;
}
.spec-block ul { margin: 0; padding-left: 20px; }
.spec-block li { margin-bottom: 6px; }

.callout {
  background: var(--bg-soft);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  color: var(--muted);
  font-size: .95rem;
}

/* ---------- Content pages ---------- */
.page-hero {
  background: linear-gradient(160deg, var(--red-dark), var(--red));
  color: #fff;
  padding: 64px 0;
  text-align: center;
}
.page-hero h1 { color: #fff; }
.page-hero p { color: rgba(255,255,255,.85); max-width: 640px; margin: 0 auto; font-size: 1.15rem; }
.breadcrumbs { font-size: .9rem; color: var(--muted); margin-bottom: 28px; }
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--red); }

.prose { max-width: 780px; margin: 0 auto; }
.prose h2 { margin-top: 1.6em; }
.prose h3 { margin-top: 1.2em; color: var(--red); }
.prose img { border-radius: var(--radius); margin: 1.5em 0; box-shadow: var(--shadow); }

.timeline { max-width: 820px; margin: 40px auto 0; position: relative; }
.timeline::before {
  content: ""; position: absolute; left: 22px; top: 6px; bottom: 6px;
  width: 2px; background: var(--line);
}
.timeline__item { position: relative; padding: 0 0 32px 64px; }
.timeline__dot {
  position: absolute; left: 12px; top: 2px;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--red); border: 4px solid var(--bg);
}
.timeline__year { font-family: var(--serif); font-size: 1.4rem; color: var(--red); font-weight: 700; }

.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: center; }
.portrait {
  aspect-ratio: 3/4;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  display: grid; place-items: center;
  box-shadow: var(--shadow-lg);
  color: var(--gold-light);
}
.portrait span { font-family: var(--serif); font-size: 4rem; }
.portrait--photo { background: none; overflow: hidden; aspect-ratio: auto; }
.portrait--photo img { width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; border-radius: var(--radius); }
.portrait__caption { text-align: center; margin-top: 14px; }
.portrait__caption strong { display: block; font-family: var(--serif); font-size: 1.3rem; color: var(--red); }
.portrait__caption span { color: var(--muted); font-size: .9rem; }

.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 36px 0; }
.stat-row--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 720px) { .stat-row, .stat-row--4 { grid-template-columns: repeat(2, 1fr); } }
.stat { text-align: center; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.stat strong { display: block; font-family: var(--serif); font-size: 2.2rem; color: var(--red); }
.stat span { color: var(--muted); font-size: .92rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { display: flex; gap: 14px; align-items: flex-start; padding: 14px 0; border-bottom: 1px solid var(--line); }
.contact-list li:last-child { border-bottom: none; }
.contact-list .ic { font-size: 1.4rem; }
.contact-list a { font-weight: 600; }
form label { display: block; font-weight: 600; margin: 14px 0 6px; font-size: .95rem; }
form input, form textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line);
  border-radius: var(--radius-sm); font: inherit; background: var(--bg);
}
form input:focus, form textarea:focus { outline: 2px solid var(--gold); border-color: var(--gold); }

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: #d8cfc6; padding: 56px 0 24px; margin-top: 40px; }
.footer a { color: #e6d8c8; }
.footer a:hover { color: var(--gold-light); }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 32px; }
.footer h4 { color: #fff; font-size: 1.05rem; margin-bottom: 14px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer ul li { margin-bottom: 8px; }
.footer__brand p { color: #b3a89e; font-size: .95rem; max-width: 34ch; }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  margin-top: 36px; padding-top: 20px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-size: .88rem; color: #9c9188;
}
.disclaimer { font-size: .82rem; color: #8a7f76; margin-top: 12px; line-height: 1.5; }

/* ---------- Recommendations ---------- */
.rec-nav { display: flex; flex-wrap: wrap; gap: 10px; margin: 8px 0 34px; }
.rec-nav a {
  display: inline-block; padding: 10px 20px; border: 1px solid var(--line);
  border-radius: 999px; background: var(--card); color: var(--ink);
  font-weight: 600; font-size: .95rem; text-decoration: none; transition: all .15s;
}
.rec-nav a:hover { border-color: var(--red); color: var(--red); box-shadow: var(--shadow); }
.rec-block {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 30px; margin-bottom: 22px; box-shadow: var(--shadow); scroll-margin-top: 90px;
}
.rec-block > h3 { color: var(--red); margin-bottom: 4px; font-size: 1.35rem; }
.rec-block__goal { color: var(--muted); font-size: .95rem; margin: 0 0 16px; }
.rec-phase { border-top: 1px dashed var(--line); padding-top: 14px; margin-top: 14px; }
.rec-phase:first-of-type { border-top: none; padding-top: 0; margin-top: 0; }
.rec-phase h4 {
  color: var(--red-light); font-family: var(--sans); font-size: .78rem;
  text-transform: uppercase; letter-spacing: .09em; margin-bottom: 8px;
}
.rec-block ul { margin: 0; padding-left: 20px; }
.rec-block li { margin-bottom: 8px; }
.rec-block a { color: var(--red); font-weight: 600; }
.rec-note {
  background: var(--bg-soft); border-left: 4px solid var(--gold);
  border-radius: var(--radius-sm); padding: 13px 18px; margin-top: 16px;
  font-size: .9rem; color: var(--muted);
}
.rec-cat-title { scroll-margin-top: 90px; margin-top: 8px; }

/* ---------- Certificates ---------- */
.cert-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 20px; margin-top: 30px;
}
.cert-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 10px; box-shadow: var(--shadow); cursor: zoom-in;
  transition: transform .15s, box-shadow .25s;
}
.cert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.cert-card img { width: 100%; height: 260px; object-fit: cover; object-position: top center; border-radius: 4px; display: block; }
.cert-card span { display: block; text-align: center; font-size: .82rem; color: var(--muted); margin-top: 8px; }

.lightbox {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(20, 8, 12, .9);
  display: none; align-items: center; justify-content: center; padding: 24px;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 100%; max-height: 92vh; border-radius: 6px; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.lightbox__close {
  position: absolute; top: 18px; right: 24px; width: 44px; height: 44px;
  border: none; border-radius: 50%; background: rgba(255,255,255,.14); color: #fff;
  font-size: 1.6rem; cursor: pointer; line-height: 1;
}
.lightbox__close:hover { background: rgba(255,255,255,.28); }
.lightbox__nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 52px; height: 52px; border: none; border-radius: 50%;
  background: rgba(255,255,255,.14); color: #fff; font-size: 2rem; cursor: pointer;
}
.lightbox__nav:hover { background: rgba(255,255,255,.28); }
.lightbox__prev { left: 16px; }
.lightbox__next { right: 16px; }

/* ---------- Reviews ---------- */
.review-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px; margin-top: 30px;
}
.review-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 26px; box-shadow: var(--shadow); display: flex; flex-direction: column;
}
.review-card__head { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.review-avatar {
  width: 50px; height: 50px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  color: var(--gold-light); display: grid; place-items: center;
  font-family: var(--serif); font-weight: 700; font-size: 1.15rem;
}
.review-card__name { font-weight: 700; color: var(--ink); }
.review-card__meta { font-size: .85rem; color: var(--muted); }
.review-stars { color: var(--gold); letter-spacing: 2px; font-size: 1.05rem; margin-bottom: 8px; }
.review-card__product {
  display: inline-block; align-self: flex-start; background: var(--bg-soft);
  color: var(--red); font-size: .78rem; font-weight: 600;
  padding: 4px 12px; border-radius: 999px; margin-bottom: 12px;
}
.review-card__text { color: var(--ink); font-size: .96rem; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; text-align: center; }
  .hero__art { max-width: 320px; margin: 0 auto; }
  .hero__lead { margin-left: auto; margin-right: auto; }
  .hero__cta { justify-content: center; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .product-detail { grid-template-columns: 1fr; }
  .product-detail__media { position: static; max-width: 420px; margin: 0 auto; }
  .split { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .nav-toggle { display: block; }
  .nav {
    position: fixed; top: 74px; right: 0; left: 0;
    flex-direction: column; align-items: stretch;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 12px; gap: 4px;
    transform: translateY(-140%);
    transition: transform .3s ease, visibility .3s;
    box-shadow: var(--shadow-lg);
    visibility: hidden;          /* закрытое меню полностью выключено */
    pointer-events: none;        /* и не перехватывает касания/прокрутку */
    max-height: calc(100vh - 74px);
    overflow-y: auto;
  }
  .nav.open { transform: translateY(0); visibility: visible; pointer-events: auto; }
  .nav a { padding: 12px 16px; }
  .nav-drop { display: block; }
  .nav-drop__toggle { display: block; }
  .nav-drop__caret { display: none; }
  .nav-drop__menu {
    position: static; display: flex; min-width: 0;
    background: none; border: none; box-shadow: none; padding: 0 0 0 18px;
  }
  .nav-drop__menu a { font-size: .95rem; color: var(--muted); }
  .features { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .section { padding: 44px 0; }
}