/* ==========================================================================
   СПЕЦТЕХРЕСУРС V2 — responsive.css
   Адаптивность: desktop / laptop / tablet / phone.
   ========================================================================== */

/* ---------- ≤ 1120px — компактный desktop ---------- */
@media (max-width: 1120px) {
    .nav__list { gap: 22px; }
    .header__phone { display: none; }
    .hero__inner { grid-template-columns: 1fr .9fr; gap: 40px; }
    .catalog__grid { grid-template-columns: repeat(2, 1fr); }
    .catalog__grid .tech-card--wide { grid-column: span 2; }
    .task__grid { grid-template-columns: repeat(2, 1fr); }
    .indus { grid-template-columns: 56px minmax(0,1fr) minmax(0,1.1fr) 90px; gap: 18px; }
    .why__grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- ≤ 960px — tablet ---------- */
@media (max-width: 960px) {
    :root { --header-h: 68px; }

    .header__nav { display: none; }
    .header__burger { display: flex; }

    .rail { display: none; }

    .hero__inner { grid-template-columns: 1fr; gap: 56px; }
    .hero__visual { order: 2; }
    .hero { padding-top: calc(var(--header-h) + 24px); }
    .hero__meta { gap: 26px; }

    .about__grid { grid-template-columns: 1fr; gap: 40px; }
    .about__plate { position: static; }

    .task__grid { grid-template-columns: repeat(2, 1fr); }
    .indus { grid-template-columns: 52px minmax(0,1fr) 70px; }
    .indus__desc { display: none; max-height: none; }
    .indus:hover .indus__desc { display: none; }
    .indus__meter b { display: none; }

    .timeline__list { grid-template-columns: repeat(3, 1fr); gap: 24px 18px; }
    .timeline__list::before { top: 22px; left: 6%; right: 6%; }

    .final__grid { grid-template-columns: 1fr; gap: 48px; }
    .contacts__grid { grid-template-columns: 1fr; gap: 40px; }
    .contacts__map { min-height: 340px; }
    .footer__main { grid-template-columns: 1fr 1fr; gap: 36px; }
}

/* ---------- ≤ 640px — phone ---------- */
@media (max-width: 640px) {
    .section { padding-block: clamp(64px, 12vw, 96px); }
    .container { padding-inline: 18px; }

    .hero__title { font-size: clamp(34px, 9.5vw, 52px); line-height: 1.02; }
    .hero__title .flow { gap: 12px; }
    .hero__cta { flex-direction: column; align-items: stretch; }
    .hero__cta .btn { width: 100%; }
    .hero__meta { flex-direction: column; gap: 14px; }

    .catalog__grid { grid-template-columns: 1fr; }
    .catalog__grid .tech-card--wide { grid-column: 1; }
    .tech-card--wide { grid-template-columns: 1fr; }
    .tech-card--wide .tech-card__media { aspect-ratio: 16/10; border-right: none; border-bottom: 1px solid var(--line); min-height: 0; }

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

    .indus { grid-template-columns: 46px minmax(0,1fr) auto; padding: 20px 6px; }
    .indus__name { font-size: 19px; }
    .indus__meter { display: none; }

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

    .timeline__list { grid-template-columns: 1fr; gap: 0; }
    .timeline__list::before { display: none; }
    .timeline__step { padding-top: 0; padding-left: 64px; min-height: 70px; }
    .tl__dot { width: 44px; height: 44px; font-size: 13px; }

    .form { padding: 24px; }
    .form__row { grid-template-columns: 1fr; }

    .footer__main { grid-template-columns: 1fr; gap: 32px; }
    .footer__bottom { flex-direction: column; align-items: flex-start; }
    .contacts__info { gap: 22px; }

    .mobile-menu { padding-bottom: 28px; }
    .mobile-menu__meta { margin-top: 28px; }
}

/* ---------- ≤ 420px — телефон ---------- */
@media (max-width: 420px) {
    :root { --header-h: 60px; }
    .header__word { display: none; }
    .header__actions { gap: 10px; }
    .schematic { max-width: 100%; }
    .section__title { font-size: 30px; }
    .final__title { font-size: 32px; }
    .final__contact { gap: 20px; }
    .task-card__title { font-size: 17px; }
    .pillar { padding: 24px 20px; }
    .catalog__foot { flex-direction: column; align-items: flex-start; }
    .dz { flex-wrap: wrap; }
    .dz__file { max-width: 100%; margin-left: 0; }
}
/* ================= МОБИЛЬНАЯ ВЕРСИЯ: доработки ================= */
@media (max-width: 960px) {
    .corner { display: none; }
    .hero__scrollhint { display: none; }
    .schematic { max-width: 520px; margin-inline: auto; }
}
@media (max-width: 640px) {
    /* шапка: логотип читаем, кнопка компактная */
    .header__inner { gap: 12px; }
    .header__actions .btn--sm { padding: 11px 14px; font-size: 13px; }
    .hero__overline { flex-wrap: wrap; row-gap: 6px; letter-spacing: .16em; }
    .hero__sub { font-size: 16px; }

    .section__title { font-size: clamp(27px, 7.6vw, 40px); }
    .section__lead { font-size: 15.5px; }

    /* таймлайн: вертикальный, с линией и отступами между шагами */
    .timeline__list { position: relative; }
    .timeline__list::before { display: block; top: 22px; bottom: 22px; left: 22px; right: auto; width: 1px; height: auto; }
    .timeline__step { padding: 0 0 28px 64px; min-height: 0; gap: 6px; }
    .timeline__step:last-child { padding-bottom: 0; }
    .tl__title { padding-top: 10px; }

    .pillar::before { font-size: 34px; bottom: auto; top: 18px; }

    .contacts__map { min-height: 300px; }
    .map-ph__body { padding: 18px; }
    .map-ph__btns .btn { flex: 1 1 auto; }

    .footer__legal { flex-direction: column; gap: 10px; }
    .form__check { font-size: 13px !important; }

    /* удобные зоны нажатия */
    .footer__nav a, .footer__contacts a { display: inline-block; padding: 4px 0; }
}
@media (max-width: 420px) {
    /* название компании возвращаем, но компактно */
    .header__word { display: block; font-size: 12px; letter-spacing: .1em; }
    .header__word small { display: none; }
    .header__mark { width: 30px; height: 30px; font-size: 12px; }
    .header__actions .btn--sm { padding: 10px 12px; font-size: 12.5px; }
    .header__actions .btn--sm .arr { display: none; }
    .footer .header__word small { display: block; }
    .section__title { font-size: clamp(26px, 7.4vw, 32px); }
}
@media (max-width: 360px) {
    .header__word { display: none; }
    .footer .header__word { display: block; }
}
@media (max-width: 640px) {
    .hero__overline > span:first-of-type { display: none; }
    .mobile-menu__link { font-size: clamp(26px, 8vw, 34px); }
}