/* ===================================================
   VOLTEX — лендинг компании по электронике
   Тёмная tech-тема. Чистый CSS.
   =================================================== */

/* --- Переменные --- */
:root {
    --bg:        #eceef1;
    --bg-2:      #e3e6ea;
    --surface:   #ffffff;
    --surface-2: #f6f7f9;
    --border:    rgba(0, 0, 0, 0.13);
    --border-2:  rgba(0, 0, 0, 0.20);

    --text:      #0e1015;
    --muted:     #3e4550;
    --faint:     #656b75;

    --accent:    #15181d;   /* бирюзовый */
    --accent-2:  #3a4150;   /* голубой */
    --accent-3:  #3a4150;   /* индиго */
    --accent-glow: rgba(0, 0, 0, 0.07);

    --radius:    16px;
    --radius-sm: 10px;
    --maxw:      1180px;

    --shadow:    0 16px 40px -18px rgba(0, 0, 0, 0.18);
    --t:         0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Сброс --- */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    line-height: 1.15;
    font-weight: 700;
}

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

/* --- Фон: сетка + свечение --- */
.bg-grid {
    position: fixed;
    inset: 0;
    z-index: -2;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.025) 1px, transparent 1px);
    background-size: 54px 54px;
    mask-image: radial-gradient(ellipse 100% 70% at 50% 0%, #000 40%, transparent 90%);
    transform: translateZ(0);
    will-change: transform;
}
.bg-glow {
    position: fixed;
    top: -200px;
    left: 50%;
    transform: translateX(-50%) translateZ(0);
    will-change: transform;
    width: 900px;
    height: 600px;
    z-index: -1;
    background: radial-gradient(circle, var(--accent-glow), transparent 60%);
    filter: blur(40px);
    opacity: 0.5;
    pointer-events: none;
}

/* --- Кнопки --- */
.btn {
    --b: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 22px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #ffffff;
    transition: transform var(--t), box-shadow var(--t), background var(--t);
    box-shadow: 0 8px 24px -8px var(--accent-glow);
    white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -8px var(--accent-glow); }
.btn:active { transform: translateY(0); }

.btn--ghost {
    background: transparent;
    color: var(--text);
    border-color: var(--border-2);
    box-shadow: none;
}
.btn--ghost:hover { background: rgba(0, 0, 0, 0.04); border-color: var(--accent); color: var(--accent); }

.btn--lg { padding: 15px 30px; font-size: 1rem; }
.btn--sm { padding: 9px 18px; font-size: 0.88rem; }
.btn--full { width: 100%; }

/* --- Шапка --- */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    transition: background var(--t), border-color var(--t);
    border-bottom: 1px solid transparent;
}
.header.scrolled {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom-color: var(--border);
}
.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 0.5px;
}
.logo__mark {
    display: grid;
    place-items: center;
    width: 36px; height: 36px;
    border-radius: 10px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 6px 18px -6px var(--accent-glow);
}
.logo__text {
    background: linear-gradient(90deg, var(--text), var(--muted));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav { display: flex; gap: 2px; }
.nav__link {
    position: relative;
    padding: 8px 11px;
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 500;
    white-space: nowrap;
    border-radius: 8px;
    transition: color var(--t), background var(--t);
}
.nav__link:hover { color: var(--text); background: rgba(0, 0, 0, 0.04); }

.header__cta { margin-left: 8px; }

/* Переключатель языка */
.lang {
    display: inline-flex;
    gap: 2px;
    margin-left: 10px;
    flex-shrink: 0;
    padding: 3px;
    border: 1px solid var(--border-2);
    border-radius: 100px;
}
.lang a {
    padding: 5px 10px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--muted);
    line-height: 1;
    transition: color var(--t), background var(--t);
}
.lang a:hover { color: var(--text); }
.lang a.is-active {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
}

/* --- Бургер --- */
.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 42px; height: 42px;
    background: transparent;
    border: 1px solid var(--border-2);
    border-radius: 10px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}
.burger span {
    width: 20px; height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--t);
}
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Hero --- */
.hero { padding: 104px 0 48px; min-height: 100vh; display: flex; align-items: center; }
.hero__inner {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 50px;
    align-items: center;
    width: 100%;
}
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border: 1px solid var(--border-2);
    border-radius: 100px;
    background: rgba(0, 0, 0, 0.03);
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 22px;
}
.badge--link { gap: 8px; transition: border-color var(--t), color var(--t); }
.badge--link:hover { border-color: var(--accent); color: var(--text); }
.badge--link span { color: var(--accent); }

.hero__title {
    font-size: clamp(1.8rem, 3.2vw, 2.6rem);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
    text-wrap: balance;
}
.accent {
    background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero__text {
    font-size: 1.04rem;
    color: var(--muted);
    max-width: 540px;
    margin-bottom: 24px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 32px; }

.hero__stats { display: flex; gap: 40px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; }
.stat__num {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
}
.stat__label { font-size: 0.9rem; color: var(--faint); margin-top: 6px; }

/* --- Hero визуал: чип --- */
.hero__visual { display: grid; place-items: center; }
.chip {
    position: relative;
    width: 220px; height: 220px;
    border-radius: 26px;
    background: linear-gradient(145deg, var(--surface-2), var(--surface));
    border: 1px solid var(--border-2);
    display: grid;
    place-items: center;
    box-shadow: var(--shadow), inset 0 0 40px rgba(0, 0, 0, 0.05);
    animation: float 6s ease-in-out infinite;
}
.chip::before {
    content: "";
    position: absolute;
    inset: 22px;
    border: 1px dashed rgba(0, 0, 0, 0.25);
    border-radius: 16px;
}
.chip__core {
    display: grid;
    place-items: center;
    width: 92px; height: 92px;
    border-radius: 18px;
    color: var(--accent);
    background: rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.3);
    box-shadow: 0 0 40px var(--accent-glow);
}
.chip__pin {
    position: absolute;
    background: linear-gradient(var(--accent), var(--accent-2));
    border-radius: 2px;
    box-shadow: 0 0 8px var(--accent-glow);
}
.chip__pin[class*="--t"],
.chip__pin[class*="--b"] { width: 6px; height: 16px; }
.chip__pin[class*="--l"],
.chip__pin[class*="--r"] { width: 16px; height: 6px; }
.chip__pin--t1 { top: -16px; left: 25%; }
.chip__pin--t2 { top: -16px; left: 50%; }
.chip__pin--t3 { top: -16px; left: 75%; }
.chip__pin--b1 { bottom: -16px; left: 25%; }
.chip__pin--b2 { bottom: -16px; left: 50%; }
.chip__pin--b3 { bottom: -16px; left: 75%; }
.chip__pin--l1 { left: -16px; top: 35%; }
.chip__pin--l2 { left: -16px; top: 60%; }
.chip__pin--r1 { right: -16px; top: 35%; }
.chip__pin--r2 { right: -16px; top: 60%; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-16px); }
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 30px var(--accent-glow); }
    50%      { box-shadow: 0 0 55px var(--accent-glow); }
}

/* --- Доверие / логотипы --- */
.trust { padding: 30px 0 10px; border-top: 1px solid var(--border); }
.trust__caption { text-align: center; color: var(--faint); font-size: 0.9rem; margin-bottom: 20px; }
.trust__row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 48px;
}
.trust__row span {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 1.15rem;
    color: var(--faint);
    letter-spacing: 1px;
    opacity: 0.65;
    transition: opacity var(--t), color var(--t);
}
.trust__row span:hover { opacity: 1; color: var(--muted); }

/* --- Секции --- */
.section { padding: 90px 0; }
.section--alt { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section__head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.eyebrow {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 14px;
}
.section__title { font-size: clamp(1.8rem, 3.5vw, 2.6rem); letter-spacing: -0.5px; }
.section__lead { color: var(--muted); font-size: 1.08rem; margin-top: 16px; }
.section__lead--center { margin-left: auto; margin-right: auto; }

/* Аккуратные переносы строк по всему сайту */
.section__title,
.cta__title,
.card__title,
.step__title,
.feature h3,
.product-card__title {
    text-wrap: balance;
}
.section__lead,
.hero__text,
.card__text,
.step__text,
.feature p,
.product__text,
.product-card__text {
    text-wrap: pretty;
}

/* --- О компании --- */
.about {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 56px;
    align-items: center;
}
.about__media { display: grid; place-items: center; }
.about__card {
    width: 100%;
    max-width: 320px;
    aspect-ratio: 1;
    border-radius: var(--radius);
    background: linear-gradient(145deg, var(--surface-2), var(--surface));
    border: 1px solid var(--border-2);
    display: grid;
    place-items: center;
    text-align: center;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}
.about__card::before {
    content: "";
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle at 30% 30%, var(--accent-glow), transparent 50%);
    opacity: 0.4;
}
.about__big {
    position: relative;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 3.6rem;
    font-weight: 700;
    line-height: 1.05;
    text-align: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.about__cap { position: relative; color: var(--muted); margin-top: 10px; font-size: 1.05rem; }

/* Карточка HW + SW */
.combo {
    position: relative;
    width: 100%;
    max-width: 360px;
    padding: 26px;
    border-radius: var(--radius);
    background: linear-gradient(145deg, var(--surface-2), var(--surface));
    border: 1px solid var(--border-2);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.combo::before {
    content: "";
    position: absolute;
    top: -40%; right: -30%;
    width: 80%; height: 80%;
    background: radial-gradient(circle, var(--accent-glow), transparent 65%);
    opacity: 0.45;
    pointer-events: none;
}
.combo__tile {
    position: relative;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 18px;
    border-radius: var(--radius-sm);
    background: var(--bg);
    border: 1px solid var(--border);
}
.combo__ico {
    flex-shrink: 0;
    width: 50px; height: 50px;
    display: grid;
    place-items: center;
    color: var(--accent);
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.2);
}
.combo__txt { display: flex; flex-direction: column; line-height: 1.2; }
.combo__txt strong {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.combo__txt span { color: var(--muted); font-size: 0.9rem; margin-top: 2px; }
.combo__plus {
    position: relative;
    text-align: center;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin: 10px 0;
}
.combo__cap {
    position: relative;
    text-align: center;
    color: var(--muted);
    font-size: 0.95rem;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.checklist { margin-top: 26px; display: grid; gap: 14px; }
.checklist li {
    position: relative;
    padding-left: 34px;
    color: var(--muted);
}
.checklist li::before {
    content: "✓";
    position: absolute;
    left: 0; top: 0;
    width: 22px; height: 22px;
    display: grid;
    place-items: center;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    color: #ffffff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

/* --- Карточки продукции --- */
.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.card {
    padding: 30px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
    transition: transform var(--t), border-color var(--t), box-shadow var(--t);
    position: relative;
    overflow: hidden;
}
.card::after {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t);
}
.card:hover {
    transform: translateY(-6px);
    border-color: var(--border-2);
    box-shadow: var(--shadow);
}
.card:hover::after { transform: scaleX(1); }
.card__icon {
    width: 56px; height: 56px;
    display: grid;
    place-items: center;
    font-size: 1.7rem;
    color: var(--accent);
    border-radius: 14px;
    background: rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.2);
    margin-bottom: 18px;
}
.card__title { font-size: 1.2rem; margin-bottom: 10px; }
.card__text { color: var(--muted); font-size: 0.96rem; }

/* Два крупных листа услуг */
.cards--two { grid-template-columns: repeat(2, 1fr); gap: 24px; }
.card--service { padding: 22px 28px; }
.card--service .card__icon { width: 48px; height: 48px; font-size: 1.4rem; margin-bottom: 14px; }
.card--service .card__title { font-size: 1.28rem; margin-bottom: 8px; }
.card--service .card__text { font-size: 0.94rem; }
.card__list { margin-top: 16px; display: grid; gap: 8px; }
.card__list li {
    position: relative;
    padding-left: 28px;
    color: var(--muted);
    font-size: 0.93rem;
}
.card__list li::before {
    content: "✓";
    position: absolute;
    left: 0; top: 0;
    width: 19px; height: 19px;
    display: grid;
    place-items: center;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 700;
    color: #ffffff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

/* Компактная секция услуг — помещается в один экран */
#services { padding: 50px 0; }
#services .section__head { margin-bottom: 26px; }

/* --- Продукт --- */
.section--product {
    background:
        radial-gradient(circle at 85% 0%, rgba(0, 0, 0, 0.07), transparent 45%),
        radial-gradient(circle at 0% 100%, rgba(0, 0, 0, 0.07), transparent 45%);
}
.product {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 50px;
    align-items: center;
}
.product__media { display: grid; gap: 16px; }
.product__frame {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-2);
    background: linear-gradient(145deg, var(--surface-2), var(--surface));
    box-shadow: var(--shadow);
}
.product__frame img { width: 100%; display: block; }
.product__frame--sec { max-width: 72%; }

/* Студийная подложка для вырезанной (прозрачной) платы */
.product__frame--shot {
    padding: 34px 30px 40px;
    display: grid;
    place-items: center;
    background:
        radial-gradient(circle at 50% 36%, rgba(0, 0, 0, 0.16), transparent 62%),
        linear-gradient(160deg, var(--surface-2), var(--bg));
}
.product__frame--shot img {
    width: auto;
    max-width: 100%;
    filter: drop-shadow(0 20px 28px rgba(0, 0, 0, 0.55));
}

/* Галерея продукта */
.gallery { display: grid; gap: 14px; }
.gallery__main {
    aspect-ratio: 16 / 10;
    display: grid;
    place-items: center;
    border-radius: var(--radius);
    border: 1px solid var(--border-2);
    overflow: hidden;
    background: linear-gradient(145deg, var(--surface-2), var(--surface));
    box-shadow: var(--shadow);
    transition: background var(--t);
}
.gallery__main img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: filter var(--t);
}
.gallery__main.is-shot {
    padding: 30px;
    background:
        radial-gradient(circle at 50% 36%, rgba(0, 0, 0, 0.16), transparent 62%),
        linear-gradient(160deg, var(--surface-2), var(--bg));
}
.gallery__main.is-shot img { filter: drop-shadow(0 20px 28px rgba(0, 0, 0, 0.55)); }

.gallery__thumbs { display: flex; gap: 12px; flex-wrap: wrap; }
.gallery__thumb {
    width: 96px;
    height: 66px;
    padding: 0;
    border-radius: 10px;
    border: 1px solid var(--border-2);
    background: var(--surface);
    overflow: hidden;
    cursor: pointer;
    transition: border-color var(--t), transform var(--t);
}
.gallery__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gallery__thumb--shot img { object-fit: contain; padding: 6px; }
.gallery__thumb:hover { transform: translateY(-2px); }
.gallery__thumb.is-active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.product__ph {
    place-items: center;
    padding: 64px 22px;
    text-align: center;
    color: var(--faint);
    font-size: 0.95rem;
    line-height: 1.8;
}
.product__ph code {
    color: var(--accent);
    font-size: 0.82rem;
    background: rgba(0, 0, 0, 0.08);
    padding: 3px 8px;
    border-radius: 6px;
}
.product__text { color: var(--muted); font-size: 1.08rem; }
.product__specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 24px;
}
.pspec {
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    transition: border-color var(--t);
}
.pspec:hover { border-color: var(--accent); }
.pspec__val {
    display: block;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.1;
}
.pspec__lab { font-size: 0.82rem; color: var(--faint); }
.product .checklist { margin-top: 22px; }
.product__cta {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    margin-top: 30px;
}
.product__sku {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.9rem;
    color: var(--faint);
    letter-spacing: 0.5px;
}

/* Компактная карточка продукта (на главной) */
.product-card {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 32px;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 26px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}
.product-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: var(--shadow);
}
.product-card__media {
    aspect-ratio: 16 / 11;
    display: grid;
    place-items: center;
    overflow: hidden;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-2);
    background:
        radial-gradient(circle at 50% 40%, rgba(0, 0, 0, 0.16), transparent 62%),
        linear-gradient(160deg, var(--surface-2), var(--bg));
    color: var(--accent);
}
.product-card__media img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 18px;
    filter: drop-shadow(0 14px 22px rgba(0, 0, 0, 0.5));
}
.product-card__icon { place-items: center; }
.product-card__title { font-size: 1.4rem; margin-bottom: 8px; }
.product-card__text { color: var(--muted); margin-bottom: 16px; }
.product-card__chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.product-card__chips span {
    font-size: 0.8rem;
    color: var(--muted);
    padding: 5px 12px;
    border: 1px solid var(--border-2);
    border-radius: 100px;
    background: rgba(0, 0, 0, 0.03);
}
.product-card__more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    font-weight: 600;
    transition: gap var(--t);
}
.product-card:hover .product-card__more { gap: 14px; }

/* Хлебные крошки и страница продукта */
.product-page { padding-top: 120px; }
.crumbs { color: var(--faint); font-size: 0.9rem; margin-bottom: 34px; }
.crumbs a { color: var(--muted); transition: color var(--t); }
.crumbs a:hover { color: var(--accent); }
.crumbs span { color: var(--faint); }

.spec-table {
    max-width: 840px;
    margin: 0 auto;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.spec-row {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 24px;
    padding: 15px 24px;
    border-bottom: 1px solid var(--border);
}
.spec-row:last-child { border-bottom: none; }
.spec-row:nth-child(odd) { background: var(--surface); }
.spec-row__k { color: var(--faint); font-size: 0.92rem; }
.spec-row__v { color: var(--text); font-size: 0.96rem; }

/* --- Юридические страницы --- */
.container--narrow { max-width: 820px; }
.legal-page { padding-top: 120px; }
.legal__updated { color: var(--faint); font-size: 0.9rem; margin: 6px 0 24px; }
.legal__note {
    margin: 0 0 26px;
    padding: 14px 16px;
    border: 1px solid var(--border-2);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--faint);
    font-size: 0.88rem;
}
.legal h2 { font-size: 1.25rem; margin: 30px 0 10px; }
.legal h3 { font-size: 1.05rem; margin: 18px 0 8px; }
.legal p { color: var(--muted); margin-bottom: 12px; }
.legal ul { padding-left: 22px; list-style: disc; margin-bottom: 14px; }
.legal li { color: var(--muted); margin-bottom: 8px; }
.legal a { color: var(--accent); }
.legal a:hover { text-decoration: underline; }

/* Юридические ссылки в подвале (вставляются через JS) */
.footer__legal { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.footer__legal a { color: var(--faint); font-size: 0.88rem; transition: color var(--t); }
.footer__legal a:hover { color: var(--accent); }

/* Cookie-баннер (создаётся через JS) */
.cookie {
    position: fixed;
    left: 16px; right: 16px; bottom: 16px;
    z-index: 200;
    max-width: 560px;
    margin: 0 auto;
    padding: 18px 20px;
    background: var(--surface);
    border: 1px solid var(--border-2);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(12px);
    transition: opacity var(--t), transform var(--t);
}
.cookie.show { opacity: 1; transform: translateY(0); }
.cookie__text { color: var(--muted); font-size: 0.9rem; margin-bottom: 14px; }
.cookie__text a { color: var(--accent); }
.cookie__actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cookie__actions .btn { padding: 9px 18px; font-size: 0.88rem; }

/* --- Шаги / услуги --- */
.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.step {
    padding: 28px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
    transition: transform var(--t), border-color var(--t);
}
.step:hover { transform: translateY(-4px); border-color: var(--accent); }
.step__num {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.4rem;
    font-weight: 700;
    color: rgba(0, 0, 0, 0.25);
    display: block;
    margin-bottom: 12px;
}
.step__title { font-size: 1.12rem; margin-bottom: 8px; }
.step__text { color: var(--muted); font-size: 0.94rem; }

/* --- Преимущества --- */
.features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.feature {
    text-align: center;
    padding: 32px 22px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
    transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}
.feature:hover { transform: translateY(-6px); border-color: var(--border-2); box-shadow: var(--shadow); }
.feature__icon {
    width: 64px; height: 64px;
    margin: 0 auto 18px;
    display: grid;
    place-items: center;
    font-size: 2rem;
    color: var(--accent);
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.2);
}
.feature h3 { font-size: 1.15rem; margin-bottom: 10px; }
.feature p { color: var(--muted); font-size: 0.94rem; }

/* --- CTA --- */
.cta { padding: 30px 0; }
.cta__inner {
    text-align: center;
    padding: 64px 32px;
    border-radius: 24px;
    background:
        radial-gradient(circle at 20% 20%, rgba(0, 0, 0, 0.18), transparent 55%),
        radial-gradient(circle at 80% 80%, rgba(0, 0, 0, 0.18), transparent 55%),
        var(--surface);
    border: 1px solid var(--border-2);
    box-shadow: var(--shadow);
}
.cta__title { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 14px; }
.cta__text { color: var(--muted); font-size: 1.08rem; margin-bottom: 28px; }

/* --- Контакты --- */
.contact {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 56px;
    align-items: start;
}
.contact__list { margin-top: 28px; display: grid; gap: 18px; }
.contact__list li { display: flex; align-items: center; gap: 14px; color: var(--muted); }
.contact__list a { transition: color var(--t); }
.contact__list a:hover { color: var(--accent); }
.contact__ico {
    width: 42px; height: 42px;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.2);
}

/* --- Форма --- */
.form {
    padding: 32px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form__field { display: block; margin-bottom: 16px; }
.form__field span { display: block; font-size: 0.88rem; color: var(--muted); margin-bottom: 7px; }
.form__field input,
.form__field textarea {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg);
    border: 1px solid var(--border-2);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: inherit;
    font-size: 0.96rem;
    transition: border-color var(--t), box-shadow var(--t);
    resize: vertical;
}
.form__field input::placeholder,
.form__field textarea::placeholder { color: var(--faint); }
.form__field input:focus,
.form__field textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.15);
}
.form__field input.invalid,
.form__field textarea.invalid { border-color: #f87171; }
.form__note { font-size: 0.8rem; color: var(--faint); margin-top: 12px; text-align: center; }
.form__success,
.form__error {
    margin-top: 16px;
    padding: 14px;
    text-align: center;
    border-radius: var(--radius-sm);
    font-weight: 500;
}
.form__success {
    background: rgba(22, 163, 74, 0.12);
    border: 1px solid rgba(22, 163, 74, 0.4);
    color: #15803d;
}
.form__error {
    background: rgba(220, 38, 38, 0.10);
    border: 1px solid rgba(220, 38, 38, 0.4);
    color: #dc2626;
}
.form__field small { color: var(--faint); font-weight: 400; }

/* --- Подвал --- */
.footer { border-top: 1px solid var(--border); background: var(--bg-2); padding-top: 56px; }
.footer__inner {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer__brand p { color: var(--muted); margin-top: 14px; max-width: 320px; font-size: 0.95rem; }
.footer__col h4 { font-size: 1rem; margin-bottom: 16px; }
.footer__col a, .footer__col span { display: block; color: var(--muted); margin-bottom: 10px; font-size: 0.94rem; transition: color var(--t); }
.footer__col a:hover { color: var(--accent); }
/* Логотип в подвале не должен подчиняться правилу .footer__col span/a */
.footer__brand .logo__mark { display: grid; margin: 0; }
.footer__brand .logo__text { display: inline-block; margin: 0; color: var(--muted); }
.footer__bottom {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding: 22px 24px;
    border-top: 1px solid var(--border);
    color: var(--faint);
    font-size: 0.88rem;
}

/* --- Анимация появления --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* --- Адаптив --- */
@media (max-width: 980px) {
    .hero { min-height: auto; }
    .hero__inner { grid-template-columns: 1fr; }
    .hero__visual { order: -1; }
    .chip { width: 170px; height: 170px; }
    .about { grid-template-columns: 1fr; gap: 36px; }
    .product { grid-template-columns: 1fr; gap: 36px; }
    .product__frame--sec { max-width: 100%; }
    .contact { grid-template-columns: 1fr; gap: 36px; }
    .cards { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); }
    .features { grid-template-columns: repeat(2, 1fr); }
    .footer__inner { grid-template-columns: 1fr 1fr; }
    .footer__brand { grid-column: 1 / -1; }
}

/* RU: подписи меню длиннее — сворачиваем в «гамбургер» раньше */
@media (max-width: 1180px) {
    html:not([lang="en"]) .nav {
        position: fixed;
        top: 72px; left: 0; right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--border);
        padding: 12px 24px 20px;
        transform: translateY(-130%);
        transition: transform var(--t);
        z-index: 99;
    }
    html:not([lang="en"]) .nav.open { transform: translateY(0); }
    html:not([lang="en"]) .nav__link { padding: 14px; border-radius: 8px; }
    html:not([lang="en"]) .burger { display: flex; }
}

@media (max-width: 720px) {
    .nav {
        position: fixed;
        top: 72px; left: 0; right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--border);
        padding: 12px 24px 20px;
        transform: translateY(-130%);
        transition: transform var(--t);
        z-index: 99;
    }
    .nav.open { transform: translateY(0); }
    .nav__link { padding: 14px; border-radius: 8px; }
    .burger { display: flex; }
    .header__cta { display: none; }

    .hero { padding: 100px 0 60px; min-height: auto; }
    .hero__actions { flex-direction: column; }
    .hero__actions .btn { width: 100%; }
    .hero__stats { gap: 28px; }

    .section { padding: 64px 0; }
    .product-card { grid-template-columns: 1fr; gap: 22px; }
    .spec-row { grid-template-columns: 1fr; gap: 4px; }
    .cards, .steps, .features { grid-template-columns: 1fr; }
    .form__row { grid-template-columns: 1fr; }
    .footer__inner { grid-template-columns: 1fr; }
    .footer__bottom { flex-direction: column; text-align: center; }
}

/* Доступность: уважаем настройку «меньше анимации» */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; }
}