/* ============================================================
   SELCONLTD.RU — стили сайта
   Производство знаков и табличек безопасности
   ============================================================ */

:root {
  --blue-900: #0b2545;
  --blue-800: #102f5c;
  --blue-700: #163d73;
  --blue-600: #1e4f8f;
  --blue-100: #e8f0fa;
  --red-600: #e53935;
  --red-700: #c62828;
  --red-100: #fdecec;
  --green-600: #2e7d32;
  --green-100: #e8f5e9;
  --yellow-600: #f9a825;
  --dark: #1c2430;
  --gray-900: #2b3441;
  --gray-700: #556070;
  --gray-500: #8a94a3;
  --gray-200: #e5e9ef;
  --gray-100: #f2f4f8;
  --white: #ffffff;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(11, 37, 69, 0.08);
  --shadow-lg: 0 8px 30px rgba(11, 37, 69, 0.14);
  --font: 'Segoe UI', -apple-system, 'Helvetica Neue', Arial, Roboto, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--dark);
  background: var(--white);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blue-600); text-decoration: none; }
a:hover { color: var(--blue-800); }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ---------- Типографика ---------- */
h1 { font-size: 2.3rem; line-height: 1.2; font-weight: 800; color: var(--blue-900); }
h2 { font-size: 1.7rem; line-height: 1.25; font-weight: 700; color: var(--blue-900); }
h3 { font-size: 1.2rem; font-weight: 700; color: var(--blue-900); }
.section { padding: 56px 0; }
.section-gray { background: var(--gray-100); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 40px; }
.section-head p { color: var(--gray-700); margin-top: 10px; font-size: 1.05rem; }
.section-head .accent { color: var(--red-600); text-transform: uppercase; letter-spacing: 2px; font-size: .8rem; font-weight: 700; }

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border: none; border-radius: var(--radius-sm);
  font-size: 1rem; font-weight: 600; text-decoration: none;
  transition: all .2s ease; white-space: nowrap;
}
.btn-primary { background: var(--red-600); color: #fff; box-shadow: 0 4px 14px rgba(229, 57, 53, .3); }
.btn-primary:hover { background: var(--red-700); color: #fff; transform: translateY(-1px); }
.btn-blue { background: var(--blue-700); color: #fff; }
.btn-blue:hover { background: var(--blue-800); color: #fff; transform: translateY(-1px); }
.btn-outline { background: transparent; border: 2px solid var(--blue-700); color: var(--blue-700); }
.btn-outline:hover { background: var(--blue-100); }
.btn-white { background: #fff; color: var(--blue-800); }
.btn-white:hover { background: var(--gray-100); }
.btn-lg { padding: 16px 34px; font-size: 1.1rem; }
.btn-sm { padding: 8px 16px; font-size: .9rem; }
.btn-block { width: 100%; }

/* ---------- Шапка ---------- */
.topbar {
  background: var(--blue-900); color: #cdd8ea; font-size: .85rem; padding: 7px 0;
}
.topbar .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.topbar a { color: #cdd8ea; }
.topbar a:hover { color: #fff; }
.topbar .right { display: flex; gap: 20px; align-items: center; }

.header { position: sticky; top: 0; z-index: 100; background: #fff; box-shadow: var(--shadow); }
.header .container { display: flex; align-items: center; gap: 24px; padding-top: 12px; padding-bottom: 12px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-icon {
  width: 44px; height: 44px; border-radius: 10px; background: var(--red-600);
  display: flex; align-items: center; justify-content: center; font-size: 22px; flex-shrink: 0;
}
.logo-text { line-height: 1.15; }
.logo-text strong { font-size: 1.15rem; color: var(--blue-900); letter-spacing: .5px; display: block; }
.logo-text span { font-size: .74rem; color: var(--gray-500); }

.nav { display: flex; gap: 4px; flex: 1; }
.nav a {
  padding: 8px 12px; border-radius: 8px; color: var(--gray-900);
  font-weight: 600; font-size: .95rem;
}
.nav a:hover, .nav a.active { background: var(--blue-100); color: var(--blue-800); }

.header-actions { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.header-phone { text-align: right; }
.header-phone a { font-weight: 800; color: var(--blue-900); font-size: 1.05rem; }
.header-phone span { display: block; font-size: .75rem; color: var(--gray-500); }

.burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 8px; }
.burger span { width: 26px; height: 3px; background: var(--blue-900); border-radius: 2px; }

/* Мобильное меню */
.mobile-menu {
  position: fixed; inset: 0; background: rgba(11, 37, 69, .97); z-index: 200;
  display: none; flex-direction: column; padding: 80px 30px 40px; overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { color: #fff; font-size: 1.3rem; font-weight: 600; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
.mobile-menu .close { position: absolute; top: 20px; right: 20px; background: none; border: none; color: #fff; font-size: 2rem; }

/* ---------- Хиро ---------- */
.hero { background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 60%, var(--blue-600) 100%); color: #fff; position: relative; overflow: hidden; }
.hero::after {
  content: ''; position: absolute; right: -80px; top: -80px; width: 480px; height: 480px;
  background: radial-gradient(circle, rgba(229,57,53,.35) 0%, transparent 65%);
}
.hero .container { position: relative; z-index: 2; padding: 72px 20px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.hero h1 { color: #fff; font-size: 2.6rem; margin-bottom: 18px; }
.hero h1 .red { color: #ff6b60; }
.hero p.lead { font-size: 1.15rem; color: #c9d7ee; margin-bottom: 28px; max-width: 560px; }
.hero-features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; margin-top: 26px; }
.hero-features li { display: flex; gap: 10px; align-items: flex-start; color: #dce6f5; font-size: .95rem; }
.hero-features li::before { content: '✔'; color: #66bb6a; font-weight: 700; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-signs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.sign-card {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius); padding: 14px; backdrop-filter: blur(4px);
}
.sign-card img { width: 64px; height: 64px; object-fit: contain; margin: 0 auto 10px; filter: drop-shadow(0 4px 8px rgba(0,0,0,.3)); }
.sign-card p { text-align: center; font-size: .82rem; color: #dce6f5; }

/* ---------- Статистика ---------- */
.stats { background: var(--red-600); color: #fff; }
.stats .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 28px 20px; }
.stat { text-align: center; }
.stat b { display: block; font-size: 2rem; font-weight: 800; }
.stat span { font-size: .9rem; opacity: .9; }

/* ---------- Категории ---------- */
.cats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.cat-card {
  background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius);
  padding: 20px; text-align: center; transition: all .2s ease; text-decoration: none; display: block;
}
.cat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: var(--blue-200, #c5d6ec); }
.cat-card .icon { font-size: 2rem; margin-bottom: 10px; display: block; }
.cat-card h3 { font-size: 1rem; margin-bottom: 6px; color: var(--blue-900); }
.cat-card p { font-size: .82rem; color: var(--gray-700); min-height: 40px; }
.cat-card .count { display: inline-block; margin-top: 10px; font-size: .78rem; color: var(--red-600); font-weight: 700; background: var(--red-100); padding: 3px 12px; border-radius: 20px; }

/* ---------- Карточки товаров ---------- */
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.product-card {
  background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: all .2s ease; position: relative;
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.product-card .thumb { background: var(--gray-100); padding: 18px; display: flex; align-items: center; justify-content: center; height: 160px; position: relative; }
.product-card .thumb img { max-height: 124px; object-fit: contain; }
.product-card .badges { position: absolute; top: 10px; left: 10px; display: flex; gap: 6px; flex-direction: column; }
.badge { font-size: .68rem; font-weight: 700; padding: 3px 8px; border-radius: 20px; }
.badge-popular { background: var(--red-600); color: #fff; }
.badge-new { background: var(--green-600); color: #fff; }
.badge-lum { background: var(--blue-700); color: #fff; }
.product-card .body { padding: 14px 16px 16px; display: flex; flex-direction: column; flex: 1; }
.product-card h3 { font-size: .95rem; line-height: 1.35; flex: 1; }
.product-card h3 a { color: var(--blue-900); }
.product-card h3 a:hover { color: var(--red-600); }
.product-card .meta { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px; }
.product-card .chip { font-size: .72rem; background: var(--gray-100); color: var(--gray-700); padding: 3px 8px; border-radius: 20px; }
.product-card .chip.lum { background: var(--blue-100); color: var(--blue-800); }
.product-card .foot { margin-top: 12px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.product-card .price { font-weight: 800; color: var(--blue-900); font-size: 1.02rem; }
.product-card .price span { display: block; font-size: .72rem; font-weight: 400; color: var(--gray-500); }

/* ---------- Фильтры каталога ---------- */
.filters { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 26px; }
.filters-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; }
.filter-group { flex: 1; min-width: 160px; }
.filter-group label { display: block; font-size: .78rem; font-weight: 700; color: var(--gray-700); margin-bottom: 5px; text-transform: uppercase; letter-spacing: .5px; }
.filter-group select, .filter-group input {
  width: 100%; padding: 10px 12px; border: 1px solid var(--gray-200); border-radius: var(--radius-sm);
  font-size: .95rem; background: var(--white); font-family: inherit; color: var(--dark);
}
.filter-group select:focus, .filter-group input:focus { outline: 2px solid var(--blue-100); border-color: var(--blue-600); }
.search-box { position: relative; flex: 2; min-width: 240px; }
.search-box input { width: 100%; padding: 10px 12px 10px 38px; border: 1px solid var(--gray-200); border-radius: var(--radius-sm); font-size: .95rem; }
.search-box::before { content: '🔍'; position: absolute; left: 12px; top: 50%; transform: translateY(-50%); font-size: .9rem; }
.filters-result { margin-top: 12px; font-size: .88rem; color: var(--gray-700); }
.sort-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; flex-wrap: wrap; gap: 10px; }
.sort-row select { padding: 8px 12px; border: 1px solid var(--gray-200); border-radius: var(--radius-sm); font-family: inherit; }

/* ---------- Таблица спецификации / калькулятор ---------- */
.calc-wrap { max-width: 860px; margin: 0 auto; }
.steps { display: flex; gap: 8px; margin-bottom: 30px; flex-wrap: wrap; }
.step-dot {
  flex: 1; min-width: 90px; text-align: center; padding: 10px 6px; border-radius: var(--radius-sm);
  background: var(--gray-100); color: var(--gray-500); font-size: .8rem; font-weight: 700; position: relative;
}
.step-dot.active { background: var(--blue-700); color: #fff; }
.step-dot.done { background: var(--green-100); color: var(--green-600); }
.step-panel { display: none; }
.step-panel.active { display: block; animation: fadeIn .3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.option-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.option-card {
  border: 2px solid var(--gray-200); border-radius: var(--radius); padding: 16px; cursor: pointer;
  transition: all .15s ease; text-align: center; background: #fff;
}
.option-card:hover { border-color: var(--blue-300, #b3c9e8); }
.option-card.selected { border-color: var(--red-600); background: var(--red-100); box-shadow: 0 0 0 1px var(--red-600); }
.option-card .o-icon { font-size: 1.7rem; display: block; margin-bottom: 8px; }
.option-card b { display: block; font-size: .92rem; color: var(--blue-900); }
.option-card span { font-size: .78rem; color: var(--gray-700); display: block; margin-top: 4px; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { display: flex; flex-direction: column; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: .85rem; font-weight: 600; margin-bottom: 6px; color: var(--gray-900); }
.form-group label .req { color: var(--red-600); }
.form-group input, .form-group select, .form-group textarea {
  padding: 12px 14px; border: 1px solid var(--gray-200); border-radius: var(--radius-sm);
  font-size: .95rem; font-family: inherit; background: #fff; color: var(--dark);
}
.form-group textarea { min-height: 90px; resize: vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: 2px solid var(--blue-100); border-color: var(--blue-600); }
.form-group .hint { font-size: .76rem; color: var(--gray-500); margin-top: 4px; }
.checkbox-line { display: flex; gap: 10px; align-items: flex-start; font-size: .82rem; color: var(--gray-700); }
.checkbox-line input { margin-top: 3px; }
.file-upload { border: 2px dashed var(--gray-200); border-radius: var(--radius-sm); padding: 18px; text-align: center; cursor: pointer; transition: all .2s; }
.file-upload:hover { border-color: var(--blue-600); background: var(--blue-100); }
.file-upload input { display: none; }
.file-upload .fu-icon { font-size: 1.5rem; }
.file-upload .fu-name { font-size: .85rem; color: var(--gray-700); margin-top: 6px; }

.wizard-nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 26px; }

/* Итоговая спецификация */
.spec-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.spec-table th { background: var(--blue-900); color: #fff; padding: 12px 14px; text-align: left; font-size: .85rem; }
.spec-table td { padding: 11px 14px; border-bottom: 1px solid var(--gray-200); font-size: .9rem; vertical-align: top; }
.spec-table tr:nth-child(even) td { background: var(--gray-100); }
.spec-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 20px 0; }
.spec-summary .s-card { background: var(--blue-100); border-radius: var(--radius); padding: 16px; text-align: center; }
.spec-summary .s-card b { display: block; font-size: 1.5rem; color: var(--blue-800); }
.spec-summary .s-card span { font-size: .8rem; color: var(--gray-700); }

/* ---------- Формы / модалка ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(11, 37, 69, .6); z-index: 300;
  display: none; align-items: flex-start; justify-content: center; padding: 40px 16px; overflow-y: auto;
}
.modal-overlay.open { display: flex; }
.modal {
  background: #fff; border-radius: 16px; max-width: 560px; width: 100%;
  padding: 30px; position: relative; animation: fadeIn .25s ease;
}
.modal-close { position: absolute; top: 14px; right: 14px; background: none; border: none; font-size: 1.5rem; color: var(--gray-500); line-height: 1; }
.modal h3 { font-size: 1.3rem; margin-bottom: 6px; }
.modal .modal-sub { color: var(--gray-700); font-size: .92rem; margin-bottom: 20px; }

/* Успех отправки */
.success-panel { text-align: center; padding: 20px 0; }
.success-panel .s-icon { font-size: 3.2rem; margin-bottom: 12px; }
.success-panel h3 { font-size: 1.4rem; margin-bottom: 8px; }
.success-panel p { color: var(--gray-700); margin-bottom: 20px; }
.send-options { display: grid; gap: 10px; }
.send-option {
  display: flex; align-items: center; gap: 12px; padding: 13px 16px;
  border: 1px solid var(--gray-200); border-radius: var(--radius-sm); cursor: pointer;
  transition: all .15s; text-align: left; background: #fff; font-family: inherit; font-size: .95rem; color: var(--dark);
}
.send-option:hover { border-color: var(--blue-600); background: var(--blue-100); }
.send-option .so-icon { font-size: 1.3rem; }

/* ---------- Таблички преимуществ ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.adv-card { background: #fff; border-radius: var(--radius); padding: 24px 20px; box-shadow: var(--shadow); text-align: center; }
.adv-card .a-icon { font-size: 2rem; margin-bottom: 12px; }
.adv-card h3 { font-size: 1rem; margin-bottom: 8px; }
.adv-card p { font-size: .88rem; color: var(--gray-700); }

/* ---------- Производство / этапы ---------- */
.steps-horiz { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; }
.step-card { background: #fff; border-radius: var(--radius); padding: 22px 18px; box-shadow: var(--shadow); position: relative; }
.step-card::before { counter-increment: step; content: counter(step); position: absolute; top: -14px; left: 18px; background: var(--red-600); color: #fff; width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; }
.step-card h3 { font-size: .98rem; margin-bottom: 8px; }
.step-card p { font-size: .85rem; color: var(--gray-700); }

/* ---------- ГОСТ / нормативы ---------- */
.gost-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.gost-item { background: #fff; border-left: 4px solid var(--blue-600); border-radius: var(--radius-sm); padding: 14px 16px; box-shadow: var(--shadow); }
.gost-item b { display: block; font-size: .92rem; color: var(--blue-800); }
.gost-item span { font-size: .82rem; color: var(--gray-700); }

/* ---------- FAQ ---------- */
.faq-item { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); margin-bottom: 10px; overflow: hidden; }
.faq-q { width: 100%; text-align: left; padding: 16px 18px; background: none; border: none; font-size: 1rem; font-weight: 600; color: var(--blue-900); display: flex; justify-content: space-between; gap: 12px; }
.faq-q::after { content: '+'; font-size: 1.4rem; color: var(--red-600); transition: transform .2s; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 18px 16px; color: var(--gray-700); font-size: .95rem; }
.faq-item.open .faq-a { display: block; }

/* ---------- Контакты ---------- */
.contacts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.contact-card { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 24px; display: flex; gap: 16px; align-items: flex-start; }
.contact-card .c-icon { font-size: 1.6rem; background: var(--blue-100); width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-card b { display: block; color: var(--blue-900); font-size: 1rem; }
.contact-card a, .contact-card span { color: var(--gray-700); font-size: .95rem; }
.contact-card a:hover { color: var(--red-600); }

/* ---------- Подвал ---------- */
.footer { background: var(--blue-900); color: #b9c8dd; padding: 48px 0 0; margin-top: 40px; }
.footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 30px; padding-bottom: 34px; }
.footer h4 { color: #fff; font-size: .95rem; margin-bottom: 14px; }
.footer a { color: #b9c8dd; font-size: .9rem; display: block; margin-bottom: 8px; }
.footer a:hover { color: #fff; }
.footer p { font-size: .88rem; margin-bottom: 8px; }
.footer .logo-text strong { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 16px 0; font-size: .8rem; color: #7d90ac; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; padding-bottom: 0; }

/* ---------- Хлебные крошки ---------- */
.breadcrumbs { font-size: .85rem; color: var(--gray-500); padding: 18px 0; }
.breadcrumbs a { color: var(--gray-700); }
.breadcrumbs a:hover { color: var(--red-600); }

/* ---------- Страница товара ---------- */
.product-page { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; }
.product-gallery { background: var(--gray-100); border-radius: var(--radius); padding: 30px; display: flex; align-items: center; justify-content: center; min-height: 380px; }
.product-gallery img { max-height: 320px; object-fit: contain; }
.product-info h1 { font-size: 1.7rem; margin-bottom: 12px; }
.product-chars { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 20px 0; }
.char-item { background: var(--gray-100); border-radius: var(--radius-sm); padding: 12px 14px; }
.char-item span { display: block; font-size: .74rem; color: var(--gray-500); text-transform: uppercase; letter-spacing: .4px; font-weight: 700; }
.char-item b { font-size: .94rem; color: var(--blue-900); }
.product-full { margin-top: 20px; }
.product-full h3 { margin: 18px 0 8px; }
.product-full p, .product-full li { font-size: .95rem; color: var(--gray-700); }
.product-full ul { list-style: disc; padding-left: 20px; }
.product-cta { background: var(--blue-100); border-radius: var(--radius); padding: 20px; margin-top: 24px; }
.product-cta p { font-size: .9rem; color: var(--gray-700); margin-bottom: 12px; }
.price-line { font-size: 1.5rem; font-weight: 800; color: var(--blue-900); margin-bottom: 4px; }
.price-line span { font-size: .85rem; font-weight: 400; color: var(--gray-700); display: block; }

/* ---------- FAQ / разделы ---------- */
.two-col { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.two-col img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }

/* ---------- Адаптив ---------- */
@media (max-width: 1024px) {
  .cats-grid { grid-template-columns: repeat(3, 1fr); }
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-horiz { grid-template-columns: repeat(2, 1fr); }
  .hero .container { grid-template-columns: 1fr; }
  .hero-signs { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 768px) {
  .nav, .header-actions .header-phone { display: none; }
  .burger { display: flex; }
  .header .container { gap: 12px; }
  .cats-grid, .products-grid, .adv-grid, .gost-list, .contacts-grid, .option-grid, .spec-summary { grid-template-columns: 1fr 1fr; }
  .two-col, .product-page { grid-template-columns: 1fr; }
  h1 { font-size: 1.8rem; }
  .hero h1 { font-size: 1.9rem; }
  .stats .container { grid-template-columns: repeat(2, 1fr); }
  .footer .container { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .hero-signs { grid-template-columns: repeat(2, 1fr); }
  .steps-horiz { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .cats-grid, .products-grid, .adv-grid, .gost-list, .contacts-grid, .option-grid, .spec-summary, .footer .container { grid-template-columns: 1fr; }
  .hero-features { grid-template-columns: 1fr; }
  .topbar .right { display: none; }
  .product-chars { grid-template-columns: 1fr; }
}