/* ============================================
   ТеплоУют — CSS Stylesheet
   Color: Orange (#FF6B00) + Black (#1A1A1A)
   Theme: Light
   ============================================ */

/* === CSS Variables === */
:root {
    --color-primary: #FF6B00;
    --color-primary-hover: #E55D00;
    --color-primary-light: #FFF3E8;
    --color-primary-dark: #CC5500;
    --color-black: #1A1A1A;
    --color-dark: #333333;
    --color-gray: #666666;
    --color-gray-light: #999999;
    --color-border: #E0E0E0;
    --color-bg: #FFFFFF;
    --color-bg-gray: #F5F5F5;
    --color-bg-dark: #1A1A1A;
    --color-success: #28A745;
    --color-gold: #D4A017;
    --color-blue: #2196F3;

    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;

    --container-width: 1200px;
    --header-height: 80px;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-dark);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary-hover);
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-black);
    line-height: 1.2;
    font-weight: 700;
}

/* === Container === */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* === Section === */
.section {
    padding: 80px 0;
}

.section--gray {
    background: var(--color-bg-gray);
}

.section--dark {
    background: var(--color-bg-dark);
}

.section__header {
    text-align: center;
    margin-bottom: 48px;
}

.section__header--light .section__title,
.section__header--light .section__subtitle {
    color: #fff;
}

.section__title {
    font-size: 36px;
    margin-bottom: 12px;
    color: var(--color-black);
}

.section__subtitle {
    font-size: 18px;
    color: var(--color-gray);
    max-width: 700px;
    margin: 0 auto;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    border: 2px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn--primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #fff;
}

.btn--outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--outline:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn--sm {
    padding: 8px 16px;
    font-size: 14px;
}

.btn--lg {
    padding: 14px 32px;
    font-size: 16px;
}

.btn--full {
    width: 100%;
}

/* === Top Bar === */
.top-bar {
    background: var(--color-bg-dark);
    color: #ccc;
    font-size: 13px;
    padding: 8px 0;
}

.top-bar__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar__info {
    display: flex;
    gap: 24px;
    align-items: center;
}

.top-bar__schedule,
.top-bar__address {
    display: flex;
    align-items: center;
    gap: 6px;
}

.top-bar__email {
    color: #ccc;
}

.top-bar__email:hover {
    color: var(--color-primary);
}

/* === Header === */
.header {
    background: var(--color-bg);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow var(--transition);
}

.header--scrolled {
    box-shadow: var(--shadow);
}

/* Level 1: Logo + Contacts + Phone + CTA */
.header__top {
    border-bottom: 1px solid var(--color-border);
}

.header__top-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

/* Header contacts (schedule + address) */
.header__contacts {
    display: flex;
    gap: 24px;
    align-items: center;
}

.header__schedule,
.header__address {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--color-gray);
}

/* Level 2: Navigation */
.header__bottom {
    background: var(--color-bg-gray);
    border-bottom: 1px solid var(--color-border);
}

/* Old single-row inner (unused now, keep for inner pages compat) */
.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: 24px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header__logo {
    text-decoration: none;
    flex-shrink: 0;
}

.logo__name {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 20px;
    color: var(--color-black);
    display: block;
    line-height: 1.2;
}

.logo__tagline {
    font-size: 11px;
    color: var(--color-gray);
    display: block;
}

/* Navigation */
.nav__list {
    display: flex;
    gap: 0;
    align-items: center;
    justify-content: center;
}

.nav__link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 14px 16px;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-heading);
    color: var(--color-dark);
    transition: all var(--transition);
    border-bottom: 3px solid transparent;
    white-space: nowrap;
}

.nav__link:hover,
.nav__item--active .nav__link {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    background: transparent;
}

/* Dropdown */
.nav__item--dropdown {
    position: relative;
}

.nav__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition);
    z-index: 100;
}

.nav__item--dropdown:hover .nav__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav__dropdown li a {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    color: var(--color-dark);
    transition: all var(--transition);
}

.nav__dropdown li a:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

/* Header Phone */
.header__phone {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.header__phone .btn {
    padding: 14px 32px;
    font-size: 16px;
}

.header__phone-link {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 18px;
    color: var(--color-black);
}

.header__phone-link:hover {
    color: var(--color-primary);
}

/* Burger */
.header__burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.header__burger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-black);
    border-radius: 2px;
    transition: all var(--transition);
}

.header__burger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.header__burger.active span:nth-child(2) {
    opacity: 0;
}

.header__burger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile phone in nav - hidden on desktop */
.nav__mobile-phone {
    display: none;
}

/* === Hero === */
.hero {
    padding: 60px 0 80px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero__title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.15;
}

.highlight {
    color: var(--color-primary);
}

.hero__subtitle {
    font-size: 18px;
    color: var(--color-gray);
    margin-bottom: 24px;
    line-height: 1.6;
}

.hero__price {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--color-bg);
    padding: 12px 24px;
    border-radius: var(--radius);
    border: 2px solid var(--color-primary);
    margin-bottom: 24px;
}

.hero__price-label {
    font-size: 14px;
    color: var(--color-gray);
}

.hero__price-value {
    font-family: var(--font-heading);
    font-size: 20px;
    color: var(--color-primary);
}

.hero__actions {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.hero__badges {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hero__badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--color-dark);
}

.hero__image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 0 20px 20px 0;
}

.hero__image img {
    position: relative;
    z-index: 1;
    border-radius: var(--radius-lg);
    max-width: 100%;
    height: auto;
    box-shadow:
        20px 20px 0 0 var(--color-primary),
        25px 25px 40px rgba(255, 107, 0, 0.25);
}

.hero__image-placeholder {
    width: 100%;
    max-width: 480px;
    aspect-ratio: 4/3;
    background: var(--color-bg);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 16px;
    color: var(--color-gray-light);
}

/* === Advantages === */
.advantages {
    padding: 0;
    margin-top: -40px;
    position: relative;
    z-index: 10;
}

.advantages__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.advantage-card {
    background: var(--color-bg);
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
}

.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.advantage-card__icon {
    margin-bottom: 16px;
}

.advantage-card__title {
    font-size: 18px;
    margin-bottom: 8px;
}

.advantage-card__text {
    font-size: 14px;
    color: var(--color-gray);
    line-height: 1.5;
}

/* === Services === */
.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition);
}

.service-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-card__icon {
    margin-bottom: 20px;
}

.service-card__title {
    font-size: 20px;
    margin-bottom: 12px;
}

.service-card__text {
    font-size: 14px;
    color: var(--color-gray);
    margin-bottom: 16px;
    line-height: 1.6;
}

.service-card__price {
    font-family: var(--font-heading);
    font-size: 18px;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.service-card__link {
    font-weight: 600;
    font-size: 14px;
}

/* === Catalog / Products === */
.catalog__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.product-card__badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--color-primary);
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
}

.product-card__badge--green {
    background: var(--color-success);
}

.product-card__badge--gold {
    background: var(--color-gold);
}

.product-card__badge--blue {
    background: var(--color-blue);
}

.product-card__image {
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #FFFFFF;
    height: 260px;
    overflow: hidden;
}

.product-card__image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.product-card__placeholder {
    width: 100%;
    aspect-ratio: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.product-card__content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.product-card__footer {
    margin-top: auto;
}

.product-card__title {
    font-size: 18px;
    margin-bottom: 8px;
}

.product-card__desc {
    font-size: 13px;
    color: var(--color-gray);
    margin-bottom: 12px;
    line-height: 1.5;
}

.product-card__specs {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 16px;
    font-size: 12px;
    color: var(--color-gray-light);
}

.product-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-card__price {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary);
}

.product-card__price small {
    font-size: 13px;
    font-weight: 400;
    color: var(--color-gray);
}

/* === Steps (How We Work) === */
.steps {
    display: flex;
    gap: 24px;
    position: relative;
}

.steps::before {
    content: '';
    position: absolute;
    top: 28px;
    left: 28px;
    right: 28px;
    height: 2px;
    background: var(--color-border);
    z-index: 0;
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 1;
}

.step__number {
    width: 56px;
    height: 56px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 16px;
    border: 4px solid var(--color-bg);
}

.step__title {
    font-size: 16px;
    margin-bottom: 8px;
}

.step__text {
    font-size: 13px;
    color: var(--color-gray);
    line-height: 1.5;
}

/* === Calculator === */
.calculator__form {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.calculator__row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.calculator__label {
    display: block;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 8px;
    color: var(--color-dark);
}

.calculator__select,
.calculator__input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 15px;
    font-family: var(--font-body);
    background: var(--color-bg);
    transition: border-color var(--transition);
    color: var(--color-dark);
}

.calculator__select:focus,
.calculator__input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.calculator__result {
    text-align: center;
}

.calculator__total {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 12px;
}

.calculator__total-label {
    font-size: 18px;
    color: var(--color-gray);
}

.calculator__total-value {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 800;
    color: var(--color-primary);
}

.calculator__note {
    font-size: 13px;
    color: var(--color-gray-light);
    margin-bottom: 20px;
}

/* === Why Us === */
.why-us__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.why-us__item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    background: var(--color-bg);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.why-us__item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
}

.why-us__icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.why-us__content h3 {
    font-size: 16px;
    margin-bottom: 4px;
}

.why-us__content p {
    font-size: 14px;
    color: var(--color-gray);
}

/* === Comparison Table === */
.comparison__table-wrapper {
    overflow-x: auto;
    margin-bottom: 24px;
}

.comparison__table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.comparison__table th,
.comparison__table td {
    padding: 16px 20px;
    text-align: center;
    font-size: 14px;
    border-bottom: 1px solid var(--color-border);
}

.comparison__table th {
    background: var(--color-bg-dark);
    color: #fff;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 14px;
}

.comparison__table th:first-child,
.comparison__table td:first-child {
    text-align: left;
    font-weight: 600;
}

.comparison__table tbody tr:hover {
    background: var(--color-primary-light);
}

.comparison__best {
    color: var(--color-primary);
    font-weight: 700;
}

.comparison__note {
    text-align: center;
    font-size: 15px;
    color: var(--color-gray);
    max-width: 700px;
    margin: 0 auto;
}

/* === Gallery === */
.gallery__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.gallery__item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
    aspect-ratio: 16 / 10;
    background: var(--color-bg-gray);
}

.gallery__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.gallery__item:hover {
    box-shadow: var(--shadow-lg);
}

.gallery__item:hover img {
    transform: scale(1.05);
}

.gallery__placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: var(--color-bg-gray);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 12px;
    color: var(--color-gray-light);
    font-size: 14px;
}

/* === Reviews === */
.reviews__slider {
    position: relative;
    overflow: hidden;
}

.reviews__track {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.review-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow);
}

.review-card__header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.review-card__avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 16px;
    flex-shrink: 0;
}

.review-card__info {
    flex: 1;
}

.review-card__name {
    display: block;
    font-weight: 600;
    font-size: 15px;
    color: var(--color-black);
}

.review-card__date {
    font-size: 13px;
    color: var(--color-gray-light);
}

.stars {
    color: #FFB800;
    font-size: 18px;
}

.review-card__text {
    font-size: 14px;
    color: var(--color-gray);
    line-height: 1.6;
}

.reviews__controls {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 32px;
}

.reviews__btn {
    width: 44px;
    height: 44px;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    background: var(--color-bg);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    color: var(--color-dark);
}

.reviews__btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* === FAQ === */
.faq__list {
    max-width: 800px;
    margin: 0 auto;
}

.faq__item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
    transition: border-color var(--transition);
}

.faq__item:hover {
    border-color: var(--color-primary);
}

.faq__question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    font-family: var(--font-heading);
    color: var(--color-dark);
    text-align: left;
    transition: color var(--transition);
}

.faq__question:hover {
    color: var(--color-primary);
}

.faq__question svg {
    flex-shrink: 0;
    transition: transform var(--transition);
}

.faq__item.active .faq__question svg {
    transform: rotate(180deg);
}

.faq__item.active .faq__question {
    color: var(--color-primary);
}

.faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq__answer p {
    padding: 0 24px 20px;
    font-size: 15px;
    color: var(--color-gray);
    line-height: 1.6;
}

.faq__item.active .faq__answer {
    max-height: 300px;
}

/* === SEO Text === */
.seo-text__content {
    max-width: 900px;
    margin: 0 auto;
}

.seo-text__content h2 {
    font-size: 28px;
    margin-bottom: 16px;
}

.seo-text__content h3 {
    font-size: 20px;
    margin-top: 28px;
    margin-bottom: 12px;
}

.seo-text__content p {
    margin-bottom: 16px;
    color: var(--color-gray);
    line-height: 1.7;
}

/* === CTA === */
.cta {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #fff;
}

.cta__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.cta__title {
    font-size: 36px;
    color: #fff;
    margin-bottom: 16px;
}

.cta__text {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 24px;
}

.cta__phone {
    display: flex;
    align-items: center;
    gap: 12px;
}

.cta__phone a {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    color: #fff;
}

.cta__phone a:hover {
    opacity: 0.8;
}

.cta__phone svg {
    stroke: #fff;
}

.cta__form-wrapper {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-lg);
}

.cta__form-title {
    font-size: 24px;
    text-align: center;
    margin-bottom: 24px;
    color: var(--color-black);
}

/* === Forms === */
.form-group {
    margin-bottom: 16px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 15px;
    font-family: var(--font-body);
    background: var(--color-bg);
    transition: border-color var(--transition);
    color: var(--color-dark);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-input::placeholder {
    color: var(--color-gray-light);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

.form-note {
    font-size: 12px;
    color: var(--color-gray-light);
    text-align: center;
    margin-top: 12px;
}

.form-note a {
    color: var(--color-gray);
    text-decoration: underline;
}

/* === Footer === */
.footer {
    background: var(--color-bg-dark);
    color: #ccc;
    padding: 60px 0 0;
}

.footer__inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #333;
}

.footer__desc {
    font-size: 14px;
    line-height: 1.6;
    margin-top: 16px;
    color: #999;
}

.footer__heading {
    font-size: 16px;
    color: #fff;
    margin-bottom: 20px;
    font-family: var(--font-heading);
}

.footer__links li {
    margin-bottom: 10px;
}

.footer__links a {
    font-size: 14px;
    color: #999;
    transition: color var(--transition);
}

.footer__links a:hover {
    color: var(--color-primary);
}

.footer__contacts li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 14px;
}

.footer__contacts a {
    color: #999;
}

.footer__contacts a:hover {
    color: var(--color-primary);
}

.footer__requisites {
    padding: 24px 0;
    border-bottom: 1px solid #333;
}

.footer__requisites .footer__heading {
    margin-bottom: 16px;
}

.footer__requisites-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px 32px;
}

.footer__req-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 13px;
}

.footer__req-label {
    color: #777;
    font-size: 12px;
}

.footer__req-value {
    color: #ccc;
    font-family: var(--font-heading);
    font-weight: 600;
    word-break: break-all;
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    font-size: 13px;
    color: #666;
}

.footer__bottom a {
    color: #666;
}

.footer__bottom a:hover {
    color: var(--color-primary);
}

/* === Modal === */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.6);
}

.modal__content {
    position: relative;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 420px;
    width: 90%;
    transform: translateY(20px);
    transition: transform var(--transition);
}

.modal.active .modal__content {
    transform: translateY(0);
}

.modal__close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--color-gray);
    transition: color var(--transition);
}

.modal__close:hover {
    color: var(--color-black);
}

.modal__title {
    font-size: 24px;
    text-align: center;
    margin-bottom: 8px;
}

.modal__subtitle {
    text-align: center;
    font-size: 14px;
    color: var(--color-gray);
    margin-bottom: 24px;
}

/* === Scroll to Top === */
.scroll-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition);
    z-index: 100;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    background: var(--color-primary-hover);
}

.scroll-top svg {
    stroke: #fff;
}

/* === Fixed Phone (Mobile) === */
.fixed-phone {
    display: none;
    position: fixed;
    bottom: 24px;
    left: 24px;
    width: 56px;
    height: 56px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    animation: pulse 2s infinite;
}

.fixed-phone svg {
    stroke: #fff;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255,107,0,0.4); }
    70% { box-shadow: 0 0 0 16px rgba(255,107,0,0); }
    100% { box-shadow: 0 0 0 0 rgba(255,107,0,0); }
}

/* === Animations === */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === Inner Pages === */

/* Breadcrumbs */
.breadcrumbs {
    background: var(--color-bg-gray);
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
}

.breadcrumbs__list {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-gray-light);
    flex-wrap: wrap;
}

.breadcrumbs__list li:not(:last-child)::after {
    content: '→';
    margin-left: 8px;
    color: var(--color-gray-light);
}

.breadcrumbs__list a {
    color: var(--color-gray);
}

.breadcrumbs__list a:hover {
    color: var(--color-primary);
}

/* Page Hero */
.page-hero {
    padding: 48px 0 40px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
}

.page-hero__title {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 12px;
}

.page-hero__subtitle {
    font-size: 18px;
    color: var(--color-gray);
    max-width: 700px;
    margin-bottom: 20px;
}

.page-hero__actions {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.page-hero__price {
    font-family: var(--font-heading);
    font-size: 20px;
    color: var(--color-primary);
}

/* Page Content Grid */
.page-content__grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 48px;
    align-items: start;
}

.page-content__main h2 {
    font-size: 26px;
    margin-top: 36px;
    margin-bottom: 16px;
}

.page-content__main h2:first-child {
    margin-top: 0;
}

.page-content__main p {
    margin-bottom: 14px;
    color: var(--color-dark);
    line-height: 1.7;
}

/* Content Lists */
.content-list {
    margin-bottom: 20px;
    padding-left: 0;
}

.content-list li {
    padding: 8px 0 8px 28px;
    position: relative;
    line-height: 1.6;
}

.content-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 16px;
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
}

.content-list--numbered {
    counter-reset: list-counter;
}

.content-list--numbered li {
    counter-increment: list-counter;
}

.content-list--numbered li::before {
    content: counter(list-counter);
    width: 22px;
    height: 22px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    top: 10px;
}

/* Price Table */
.price-table-wrapper {
    margin: 20px 0 32px;
    overflow-x: auto;
}

.price-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.price-table th,
.price-table td {
    padding: 14px 20px;
    text-align: left;
    font-size: 15px;
    border-bottom: 1px solid var(--color-border);
}

.price-table th {
    background: var(--color-bg-dark);
    color: #fff;
    font-family: var(--font-heading);
    font-weight: 600;
}

.price-table tr:last-child td {
    border-bottom: none;
}

.price-table tr:hover td {
    background: var(--color-primary-light);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 20px 0 32px;
}

.feature {
    padding: 24px;
    background: var(--color-bg-gray);
    border-radius: var(--radius);
    border-left: 4px solid var(--color-primary);
}

.feature h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.feature p {
    font-size: 14px;
    color: var(--color-gray);
    margin-bottom: 0;
}

/* Sidebar */
.page-content__sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-cta {
    background: var(--color-primary-light);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 20px;
}

.sidebar-cta h3 {
    font-size: 20px;
    margin-bottom: 8px;
    text-align: center;
}

.sidebar-cta p {
    font-size: 14px;
    color: var(--color-gray);
    text-align: center;
    margin-bottom: 16px;
}

.sidebar-form .form-input {
    margin-bottom: 12px;
}

.sidebar-info {
    background: var(--color-bg-gray);
    border-radius: var(--radius);
    padding: 24px;
}

.sidebar-info h4 {
    font-size: 16px;
    margin-bottom: 12px;
}

.sidebar-info p {
    font-size: 14px;
    color: var(--color-gray);
    margin-bottom: 8px;
}

.sidebar-info a {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 18px;
    color: var(--color-primary);
}

/* Contacts Grid (on О компании page) */
.contacts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 24px 0 32px;
}

.contact-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    transition: all var(--transition);
}

.contact-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.contact-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--color-primary-light);
    border-radius: 50%;
    margin-bottom: 12px;
}

.contact-card h3 {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--color-black);
}

.contact-card p {
    font-size: 15px;
    color: var(--color-dark);
    margin-bottom: 4px;
    line-height: 1.4;
}

.contact-card p a {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-primary);
    font-size: 18px;
}

.contact-card__note {
    font-size: 13px !important;
    color: var(--color-gray-light) !important;
    margin-top: 6px !important;
}

/* Requisites table */
.requisites-table {
    margin: 20px 0 32px;
    overflow-x: auto;
}

.requisites-table .specs-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.requisites-table .specs-table td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--color-border);
    font-size: 14px;
}

.requisites-table .specs-table td:first-child {
    color: var(--color-gray);
    width: 38%;
    background: var(--color-bg-gray);
}

.requisites-table .specs-table td:last-child {
    color: var(--color-black);
    font-family: var(--font-heading);
    font-weight: 600;
    word-break: break-word;
}

.requisites-table .specs-table tr:last-child td {
    border-bottom: none;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: 24px 0 32px;
}

.stat {
    text-align: center;
    padding: 24px;
    background: var(--color-primary-light);
    border-radius: var(--radius);
}

.stat__number {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.stat__label {
    font-size: 14px;
    color: var(--color-gray);
}

/* === Articles Grid === */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.article-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
}

.article-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.article-card__image {
    background: var(--color-bg-gray);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 32px;
}

.article-card__placeholder {
    display: flex;
    justify-content: center;
    align-items: center;
}

.article-card__content {
    padding: 24px;
}

.article-card__tag {
    display: inline-block;
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.article-card__title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.3;
}

.article-card__title a {
    color: var(--color-black);
    transition: color var(--transition);
}

.article-card__title a:hover {
    color: var(--color-primary);
}

.article-card__desc {
    font-size: 14px;
    color: var(--color-gray);
    line-height: 1.6;
    margin-bottom: 16px;
}

.article-card__meta {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--color-gray-light);
}

/* Specs Table */
.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.specs-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    font-size: 14px;
}

.specs-table td:first-child {
    font-weight: 600;
    color: var(--color-dark);
    width: 50%;
}

.specs-table td:last-child {
    color: var(--color-gray);
}

.specs-table tr:hover td {
    background: var(--color-primary-light);
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* Large Tablet / Small Desktop (1024px) */
@media (max-width: 1024px) {
    .container {
        padding: 0 24px;
    }

    .section__title {
        font-size: 28px;
    }

    .section__subtitle {
        font-size: 16px;
    }

    /* Header: hide contacts on tablet */
    .header__contacts {
        display: none;
    }

    .nav__link {
        padding: 12px 10px;
        font-size: 13px;
    }

    /* Hero */
    .hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__title {
        font-size: 36px;
    }

    .hero__actions {
        justify-content: center;
    }

    .hero__badges {
        align-items: center;
    }

    .hero__image {
        display: none;
    }

    .hero__price {
        margin: 0 auto 24px;
    }

    /* Grids */
    .advantages__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .catalog__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .why-us__grid {
        grid-template-columns: 1fr;
    }

    /* Steps */
    .steps {
        flex-wrap: wrap;
        justify-content: center;
    }

    .steps::before {
        display: none;
    }

    .step {
        flex: 0 0 calc(33.333% - 16px);
    }

    /* Calculator */
    .calculator__row {
        grid-template-columns: 1fr 1fr;
    }

    /* CTA */
    .cta__inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .cta__phone {
        justify-content: center;
    }

    /* Reviews */
    .reviews__track {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Comparison */
    .comparison__table {
        font-size: 13px;
    }

    .comparison__table th,
    .comparison__table td {
        padding: 12px 10px;
        font-size: 13px;
    }

    /* Footer */
    .footer__inner {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Articles */
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Inner pages */
    .page-content__grid {
        grid-template-columns: 1fr 280px;
        gap: 32px;
    }

    .page-hero__title {
        font-size: 32px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet (768px) */
@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }

    .container {
        padding: 0 16px;
    }

    .section {
        padding: 48px 0;
    }

    .section__title {
        font-size: 26px;
    }

    /* Top bar hidden */
    .top-bar {
        display: none;
    }

    /* Two-level header: collapse to single row on mobile */
    .header__contacts {
        display: none;
    }

    .header__top-inner {
        height: 56px;
    }

    .header__bottom {
        display: none;
    }

    .header__phone {
        display: flex !important;
    }

    .header__phone .btn {
        display: none;
    }

    .header__phone-link {
        font-size: 16px !important;
    }

    .header__phone-link svg {
        display: none;
    }

    /* Mobile navigation */
    .header__nav {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        padding: 20px;
        transform: translateX(100%);
        transition: transform var(--transition);
        overflow-y: auto;
        z-index: 999;
        border-top: 1px solid var(--color-border);
    }

    .header__nav.active {
        transform: translateX(0);
    }

    .nav__list {
        flex-direction: column;
        gap: 0;
    }

    .nav__link {
        padding: 14px 16px;
        font-size: 16px;
        width: 100%;
        justify-content: space-between;
        border-bottom: 1px solid var(--color-border) !important;
        border-bottom-width: 1px !important;
    }

    .nav__dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding: 0 0 0 20px;
        min-width: unset;
        display: none;
    }

    .nav__item--dropdown.active .nav__dropdown {
        display: block;
    }

    .nav__dropdown li a {
        padding: 12px 16px;
        border-bottom: 1px solid var(--color-bg-gray);
    }

    .header__burger {
        display: flex;
    }

    /* Mobile phone in nav */
    .nav__mobile-phone {
        display: block;
        padding: 20px 16px;
        border-top: 2px solid var(--color-border);
        margin-top: 12px;
        text-align: center;
    }

    .nav__mobile-phone-link {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-family: var(--font-heading);
        font-weight: 700;
        font-size: 20px;
        color: var(--color-black);
        margin-bottom: 16px;
    }

    .nav__mobile-phone-link svg {
        stroke: var(--color-primary);
    }

    /* Hero */
    .hero {
        padding: 32px 0 48px;
    }

    .hero__title {
        font-size: 28px;
    }

    .hero__subtitle {
        font-size: 15px;
    }

    .hero__actions {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    .hero__actions .btn {
        width: 100%;
        max-width: 360px;
    }

    .hero__price {
        flex-direction: column;
        gap: 4px;
        text-align: center;
        width: 100%;
        max-width: 360px;
    }

    /* Advantages */
    .advantages {
        margin-top: -20px;
    }

    .advantages__grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .advantage-card {
        padding: 20px 16px;
    }

    .advantage-card__icon svg {
        width: 36px;
        height: 36px;
    }

    .advantage-card__title {
        font-size: 15px;
    }

    .advantage-card__text {
        font-size: 13px;
    }

    /* Services */
    .services__grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .service-card {
        padding: 24px;
    }

    .service-card__icon svg {
        width: 40px;
        height: 40px;
    }

    /* Catalog */
    .catalog__grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .product-card__content {
        padding: 16px;
    }

    .product-card__title {
        font-size: 16px;
    }

    .product-card__desc {
        font-size: 12px;
    }

    .product-card__price {
        font-size: 18px;
    }

    .product-card__footer {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .product-card__footer .btn {
        width: 100%;
    }

    /* Steps */
    .steps {
        flex-direction: column;
        gap: 20px;
    }

    .step {
        flex: auto;
        display: grid;
        grid-template-columns: 56px 1fr;
        gap: 0 16px;
        text-align: left;
    }

    .step__number {
        margin: 0;
        grid-row: span 2;
        align-self: start;
        width: 48px;
        height: 48px;
        font-size: 20px;
    }

    .step__title {
        align-self: end;
        margin-bottom: 4px;
    }

    .step__text {
        grid-column: 2;
    }

    /* Calculator */
    .calculator__form {
        padding: 24px;
    }

    .calculator__row {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .calculator__total {
        flex-direction: column;
        gap: 4px;
    }

    .calculator__total-label {
        font-size: 16px;
    }

    .calculator__total-value {
        font-size: 32px;
    }

    /* Why us */
    .why-us__grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .why-us__item {
        padding: 16px;
    }

    /* Comparison table */
    .comparison__table-wrapper {
        margin: 0 -16px;
        padding: 0 16px;
        -webkit-overflow-scrolling: touch;
    }

    .comparison__table {
        min-width: 600px;
    }

    .comparison__table th,
    .comparison__table td {
        padding: 10px 8px;
        font-size: 12px;
        white-space: nowrap;
    }

    .comparison__note {
        font-size: 14px;
        padding: 0 16px;
    }

    /* Articles */
    .articles-grid {
        grid-template-columns: 1fr;
    }

    .article-card {
        display: grid;
        grid-template-columns: 140px 1fr;
    }

    .article-card__image {
        padding: 16px;
    }

    .article-card__content {
        padding: 16px;
    }

    .article-card__title {
        font-size: 16px;
    }

    .article-card__desc {
        display: none;
    }

    /* Gallery */
    .gallery__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    /* Reviews */
    .reviews__track {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .review-card {
        padding: 20px;
    }

    /* FAQ */
    .faq__question {
        padding: 16px;
        font-size: 15px;
    }

    .faq__answer p {
        padding: 0 16px 16px;
        font-size: 14px;
    }

    /* SEO Text */
    .seo-text__content h2 {
        font-size: 22px;
    }

    .seo-text__content h3 {
        font-size: 18px;
    }

    /* CTA */
    .cta__title {
        font-size: 26px;
    }

    .cta__text {
        font-size: 16px;
    }

    .cta__phone a {
        font-size: 22px;
    }

    .cta__form-wrapper {
        padding: 24px;
    }

    /* Footer */
    .footer {
        padding: 40px 0 0;
    }

    .footer__inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer__bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    /* Fixed elements */
    .fixed-phone {
        display: flex;
    }

    .scroll-top {
        bottom: 88px;
        right: 16px;
        width: 44px;
        height: 44px;
    }

    /* Inner pages */
    .page-hero {
        padding: 32px 0 24px;
    }

    .page-hero__title {
        font-size: 26px;
    }

    .page-hero__subtitle {
        font-size: 15px;
    }

    .page-content__grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .page-content__sidebar {
        position: static;
    }

    .page-content__main h2 {
        font-size: 22px;
        margin-top: 28px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .feature {
        padding: 16px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .contacts-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .contact-card {
        padding: 20px;
    }

    .requisites-table .specs-table td {
        padding: 10px 12px;
        font-size: 13px;
    }

    .requisites-table .specs-table td:first-child {
        width: 45%;
    }

    .stat {
        padding: 16px;
    }

    .stat__number {
        font-size: 28px;
    }

    /* Price table mobile */
    .price-table th,
    .price-table td {
        padding: 10px 12px;
        font-size: 14px;
    }

    /* Modal */
    .modal__content {
        padding: 28px 20px;
        width: 94%;
    }

    .modal__title {
        font-size: 20px;
    }
}

/* Small Mobile (480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }

    .section {
        padding: 36px 0;
    }

    .hero__title {
        font-size: 24px;
    }

    .hero__subtitle {
        font-size: 14px;
    }

    .section__title {
        font-size: 22px;
    }

    .section__subtitle {
        font-size: 14px;
    }

    /* Single column grids */
    .advantages__grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .advantage-card {
        display: flex;
        gap: 16px;
        text-align: left;
        padding: 16px;
    }

    .advantage-card__icon {
        margin-bottom: 0;
        flex-shrink: 0;
    }

    .advantage-card__icon svg {
        width: 32px;
        height: 32px;
    }

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

    .product-card__footer {
        flex-direction: row;
        align-items: center;
    }

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

    /* Calculator */
    .calculator__form {
        padding: 16px;
    }

    .calculator__total-value {
        font-size: 28px;
    }

    /* CTA */
    .cta {
        padding: 36px 0;
    }

    .cta__title {
        font-size: 22px;
    }

    .cta__text {
        font-size: 14px;
    }

    .cta__form-wrapper {
        padding: 20px;
    }

    .cta__form-title {
        font-size: 20px;
    }

    .cta__phone a {
        font-size: 20px;
    }

    /* Inner pages */
    .page-hero__title {
        font-size: 22px;
    }

    .page-content__main h2 {
        font-size: 20px;
    }

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

    .stat__number {
        font-size: 24px;
    }

    /* Sidebar */
    .sidebar-cta {
        padding: 20px;
    }

    /* Steps */
    .step__number {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .step {
        grid-template-columns: 40px 1fr;
    }

    /* Articles on small mobile */
    .article-card {
        grid-template-columns: 1fr;
    }

    .article-card__image {
        padding: 24px;
    }

    .article-card__desc {
        display: block;
    }

    .article-card__content {
        padding: 20px;
    }

    /* Breadcrumbs */
    .breadcrumbs__list {
        font-size: 12px;
    }

    /* Buttons */
    .btn--lg {
        padding: 12px 24px;
        font-size: 15px;
    }

    /* Footer requisites: single column on mobile */
    .footer__requisites-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    /* Footer */
    .footer__bottom {
        font-size: 12px;
    }

    /* FAQ */
    .faq__question {
        font-size: 14px;
        padding: 14px 12px;
    }

    .faq__answer p {
        padding: 0 12px 14px;
        font-size: 13px;
    }

    /* Comparison */
    .comparison__table-wrapper {
        margin: 0 -12px;
        padding: 0 12px;
    }
}

/* Extra Small (360px and below) */
@media (max-width: 360px) {
    .hero__title {
        font-size: 21px;
    }

    .section__title {
        font-size: 20px;
    }

    .page-hero__title {
        font-size: 20px;
    }

    .hero__price {
        padding: 10px 16px;
    }

    .hero__price-value {
        font-size: 18px;
    }

    .hero__badge {
        font-size: 12px;
    }

    .advantage-card__title {
        font-size: 14px;
    }

    .product-card__price {
        font-size: 16px;
    }

    .calculator__total-value {
        font-size: 24px;
    }

    .cta__title {
        font-size: 20px;
    }

    .stat__number {
        font-size: 22px;
    }

    .stat__label {
        font-size: 12px;
    }
}