:root {
    
    --bg-body: #f3f5f8;
    
    --bg-surface: #ffffff;
    
    --bg-soft: #edf0f6;
    
    --text-primary: #1d232b;
    
    --text-secondary: #6b7684;
    
    --border: #e2e7ed;

    
    --accent: #f05a2b;
    
    --accent-hover: #d84922;
    
    --accent-soft: rgba(240, 90, 43, 0.08);
    
    --danger: #d3322b;

    
    --badge-hit: #e31e24;   
    --badge-new: #1fa356;   
    --badge-hot: #f05a2b;   

    
    --ink: #1b1f27;
    --ink-text: #aab3be;
    --ink-muted: #7e8895;

    
    --icon-muted: #5b6b7c;
    --icon-bg: #eef1f5;

    
    --radius: 10px;
    --radius-sm: 8px;
    --transition: 0.15s ease;
}

body {
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
    background-color: var(--bg-body);
    color: var(--text-primary);
}

h1, h2, h3, h4, h5 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
}

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

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

img, .bi {
    display: inline-block;
    vertical-align: middle;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

.site-main {
    flex: 1;
    padding: 2rem 0 3rem;
}

.topbar {
    background: var(--ink);
    color: var(--ink-text);
    font-size: 0.82rem;
}

.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 0.45rem 0;
}

.topbar__item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    white-space: nowrap;
}

.topbar__nav {
    display: inline-flex;
    align-items: center;
    gap: 1.1rem;
}

.topbar__nav a {
    color: var(--ink-text);
    font-size: 0.82rem;
    white-space: nowrap;
}

.topbar__nav a:hover {
    color: #ffffff;
    text-decoration: none;
}

.site-header {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 10px rgba(20, 30, 55, 0.05);
}

.header-main {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 0.75rem 0;
}

.navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.12rem;
    color: var(--text-primary);
    white-space: nowrap;
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--accent);
    text-decoration: none;
}

.brand-badge {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: #ffffff;
    background: var(--accent);
}

.header-search {
    display: flex;
    flex: 1;
    max-width: 540px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: border-color var(--transition);
}

.header-search:focus-within {
    border-color: var(--accent);
}

.header-search__input {
    flex: 1;
    border: none;
    outline: none;
    padding: 0.55rem 0.85rem;
    font-size: 0.92rem;
    color: var(--text-primary);
    background: var(--bg-surface);
}

.header-search__input::placeholder {
    color: var(--text-secondary);
    opacity: 0.8;
}

.header-search__btn {
    border: none;
    background: var(--accent);
    color: #ffffff;
    padding: 0 0.85rem;
    cursor: pointer;
    font-size: 1.05rem;
    transition: background-color var(--transition);
}

.header-search__btn:hover {
    background: var(--accent-hover);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.15rem;
}

.theme-toggle {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    line-height: 1;
    cursor: pointer;
    transition: border-color var(--transition), color var(--transition);
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.header-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.05rem;
    padding: 0.3rem 0.55rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.7rem;
    white-space: nowrap;
    text-decoration: none;
    transition: color var(--transition);
}

.header-action:hover {
    color: var(--accent);
    text-decoration: none;
}

.header-action__icon {
    font-size: 1.15rem;
    line-height: 1;
}

.header-action__label {
    font-weight: 600;
    line-height: 1;
}

.category-nav {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    font-size: 0.92rem;
    font-weight: 600;
}

.category-nav__inner {
    display: flex;
    align-items: center;
    gap: 0.05rem;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.category-nav__inner::-webkit-scrollbar {
    display: none;
}

.category-nav__all {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.6rem 0.85rem;
    color: #ffffff;
    background: var(--accent);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    font-weight: 700;
    font-size: 0.88rem;
    text-decoration: none;
    transition: background-color var(--transition);
}

.category-nav__all:hover {
    background: var(--accent-hover);
    color: #ffffff;
    text-decoration: none;
}

.category-nav__link {
    display: inline-block;
    padding: 0.6rem 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
    font-weight: 600;
    font-size: 0.88rem;
    border-bottom: 2px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}

.category-nav__link.nav-link--active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.category-nav__link:hover {
    color: var(--accent);
    text-decoration: none;
}

.btn {
    border-radius: var(--radius-sm);
    font-weight: 600;
    padding: 0.55rem 1.1rem;
    transition: background-color var(--transition), border-color var(--transition),
                box-shadow var(--transition), transform var(--transition);
}

.btn-primary {
    --bs-btn-bg: var(--accent);
    --bs-btn-border-color: var(--accent);
    --bs-btn-hover-bg: var(--accent-hover);
    --bs-btn-hover-border-color: var(--accent-hover);
    --bs-btn-active-bg: var(--accent-hover);
    --bs-btn-active-border-color: var(--accent-hover);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(240, 90, 43, 0.25);
}

.btn-outline-primary {
    --bs-btn-color: var(--accent);
    --bs-btn-border-color: var(--accent);
    --bs-btn-hover-bg: var(--accent);
    --bs-btn-hover-border-color: var(--accent);
}

.promo-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    background: var(--ink);
    color: #ffffff;
    border-radius: var(--radius);
    padding: 2rem 2.5rem;
    margin-bottom: 0.5rem;
}

.promo-banner__title {
    font-size: 1.65rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.promo-banner__text {
    color: #aab3be;
    font-size: 0.95rem;
    max-width: 460px;
    margin-bottom: 1.25rem;
}

.promo-banner__icon {
    font-size: 4.5rem;
    color: var(--accent);
    opacity: 0.9;
}

.advantages {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.advantage {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.9rem 1rem;
}

.advantage__icon {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
}

.tint-blue {
    background: #e5ecfb;
    color: #2b5ce6;
}

.tint-green {
    background: #e1f5e9;
    color: #178a50;
}

.tint-amber {
    background: #faf0da;
    color: #a86a12;
}

.tint-violet {
    background: #eee7fb;
    color: #6d4fd0;
}

.advantage__title {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 0;
    line-height: 1.25;
}

.advantage__text {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 0;
    line-height: 1.35;
}

.home-section {
    margin-top: 2rem;
}

.section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.section-overline {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.3rem;
}

.section-title {
    font-size: 1.4rem;
    margin-bottom: 0;
}

.section-link {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.88rem;
    white-space: nowrap;
}

.page-head {
    margin-bottom: 1.5rem;
}

.page-title {
    font-size: 1.75rem;
    margin-bottom: 0.3rem;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 0.98rem;
    margin-bottom: 0;
}

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

.product-card:hover {
    transform: translateY(-3px);
    border-color: #c8cdd5;
    box-shadow: 0 6px 18px rgba(20, 30, 55, 0.1);
}

.product-card__media {
    height: 165px;
    background: var(--icon-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.2rem;
    color: var(--icon-muted);
    border-bottom: 1px solid var(--border);
}

.product-card__badge {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.02em;
    z-index: 2;
}

.badge-hit { background: var(--badge-hit); }
.badge-new { background: var(--badge-new); }
.badge-hot { background: var(--badge-hot); }

.product-card__body {
    padding: 1rem 1.1rem 1.15rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.product-card__name {
    font-size: 0.98rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    line-height: 1.3;
}

.product-card__specs {
    margin-bottom: 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.product-card__footer {
    margin-top: auto;
    border-top: 1px solid var(--border);
    padding-top: 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.product-card__price {
    font-weight: 800;
    font-size: 1.05rem;
    color: var(--text-primary);
}

.product-card__btn {
    width: 100%;
}

.cta {
    background: var(--accent-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
    padding: 2.25rem 1.5rem;
}

.cta__title {
    font-size: 1.35rem;
    margin-bottom: 0.45rem;
}

.cta__text {
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 1.25rem;
}

.about-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.about-text {
    color: var(--text-secondary);
    max-width: 680px;
    margin-bottom: 0;
}

.block-title {
    font-size: 1.3rem;
    margin-bottom: 1.1rem;
}

.role {
    height: 100%;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.4rem;
    transition: box-shadow var(--transition), transform var(--transition);
}

.role:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(20, 30, 55, 0.1);
}

.role__icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--accent);
    background: var(--accent-soft);
    margin-bottom: 0.8rem;
}

.role__title {
    font-size: 1.05rem;
    margin-bottom: 0.3rem;
}

.role__text {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-bottom: 0;
}

.steps {
    list-style: none;
    margin: 0;
    padding: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.steps__item {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    padding: 0.85rem 1.15rem;
}

.steps__item + .steps__item {
    border-top: 1px solid var(--border);
}

.steps__num {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.82rem;
    color: var(--accent);
    background: var(--accent-soft);
}

.steps__name {
    font-weight: 700;
    font-size: 0.95rem;
}

.steps__desc {
    color: var(--text-secondary);
    font-size: 0.86rem;
}

.contacts-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.6rem;
}

.form-heading {
    font-size: 1.15rem;
    margin-bottom: 1.1rem;
}

.contact-row {
    display: flex;
    gap: 0.8rem;
    align-items: flex-start;
    margin-bottom: 1.1rem;
}

.contact-row:last-child {
    margin-bottom: 0;
}

.contact-row__icon {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--accent);
    background: var(--accent-soft);
}

.contact-row__label {
    font-weight: 700;
    font-size: 0.88rem;
    margin-bottom: 0.05rem;
}

.contact-row__value {
    color: var(--text-secondary);
    font-size: 0.93rem;
    margin-bottom: 0;
    overflow-wrap: anywhere;
}

.contact-row__value a {
    color: var(--text-primary);
    text-decoration: none;
}

.contact-row__value a:hover {
    color: var(--accent);
}

.form-control {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 0.55rem 0.8rem;
}

.form-control:focus {
    background: var(--bg-surface);
    color: var(--text-primary);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(240, 90, 43, 0.12);
}

.form-label {
    font-weight: 600;
    font-size: 0.88rem;
    margin-bottom: 0.3rem;
}

.form-control::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.field-validation-error {
    display: block;
    color: var(--danger);
    font-size: 0.84rem;
    font-weight: 600;
    margin-top: 0.3rem;
}

.input-validation-error {
    border-color: var(--danger);
}

.input-validation-error:focus {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(211, 50, 43, 0.12);
}

.alert {
    border-radius: var(--radius-sm);
    margin-bottom: 1.1rem;
}

.alert-success {
    --bs-alert-bg: #ecfdf5;
    --bs-alert-border-color: #a7f3d0;
    --bs-alert-color: #065f46;
}

.site-footer {
    background: var(--ink);
    color: var(--ink-text);
    padding: 2.25rem 0 0;
    margin-top: 1rem;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.1rem;
    color: #ffffff;
    margin-bottom: 0.65rem;
}

.footer-logo .brand-badge {
    background: var(--accent);
}

.footer-desc {
    color: var(--ink-muted);
    font-size: 0.9rem;
    max-width: 320px;
    margin-bottom: 0;
}

.footer-heading {
    color: #ffffff;
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    margin-bottom: 0.85rem;
}

.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--ink-muted);
    text-decoration: none;
}

.footer-links a:hover {
    color: #ffffff;
    text-decoration: none;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 1.7rem;
    padding: 1rem 0;
    font-size: 0.82rem;
    color: var(--ink-muted);
}

.error-page {
    text-align: center;
    padding: 3rem 0 2rem;
}

.error-code {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--accent), var(--badge-hit));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 0.7rem;
}

.error-title {
    font-size: 1.35rem;
    margin-bottom: 0.45rem;
}

.error-text {
    color: var(--text-secondary);
    max-width: 420px;
    margin: 0 auto 1.5rem;
}

.error-request-id {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 1.2rem;
}

.error-request-id code {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.1rem 0.45rem;
    overflow-wrap: anywhere;
}

html[data-theme="dark"] {
    --bg-body: #11151a;
    --bg-surface: #1a1f28;
    --bg-soft: #222b38;
    --text-primary: #e8ecf2;
    --text-secondary: #98a3b2;
    --border: #2a323f;
    --accent: #ff7a45;
    --accent-hover: #ff9a6e;
    --accent-soft: rgba(255, 122, 69, 0.12);
    --danger: #ff6b5e;

    --badge-hit: #ff5252;
    --badge-new: #4caf70;
    --badge-hot: #ff7a45;

    --icon-bg: #222b38;
    --icon-muted: #98a3b2;
}

html[data-theme="dark"] .tint-blue {
    background: #1a2745;
    color: #8fb0ff;
}

html[data-theme="dark"] .tint-green {
    background: #142f24;
    color: #5fce96;
}

html[data-theme="dark"] .tint-amber {
    background: #33270f;
    color: #e8b45a;
}

html[data-theme="dark"] .tint-violet {
    background: #271e42;
    color: #b39dff;
}

html[data-theme="dark"] .navbar-toggler-icon {
    filter: invert(1) grayscale(1);
}

html[data-theme="dark"] .alert-success {
    --bs-alert-bg: rgba(6, 95, 70, 0.25);
    --bs-alert-border-color: rgba(6, 95, 70, 0.5);
    --bs-alert-color: #6ee7b7;
}

html[data-theme="dark"] .promo-banner {
    background: #0d1117;
}

html[data-theme="dark"] .site-footer {
    background: #0d1016;
}

html[data-theme="dark"] .form-control:focus {
    box-shadow: 0 0 0 3px rgba(255, 122, 69, 0.18);
}

html[data-theme="dark"] .btn-primary:hover {
    box-shadow: 0 4px 10px rgba(255, 122, 69, 0.25);
}

.catalog-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
}

.catalog-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.catalog-filter__link {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-soft);
    transition: background var(--transition), color var(--transition);
}

.catalog-filter__link:hover {
    color: var(--accent);
    text-decoration: none;
}

.catalog-filter__link.is-active {
    color: #fff;
    background: var(--accent);
}

.catalog-search {
    display: flex;
    min-width: 240px;
    max-width: 340px;
    flex: 1 1 240px;
}

.catalog-search__input {
    flex: 1;
    border: 1px solid var(--border);
    border-right: 0;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    padding: 0.45rem 0.8rem;
    font-size: 0.9rem;
    background: var(--bg-body);
    color: var(--text-primary);
}

.catalog-search__input:focus {
    outline: none;
    border-color: var(--accent);
}

.catalog-search__btn {
    border: 1px solid var(--accent);
    background: var(--accent);
    color: #fff;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 0 0.9rem;
    cursor: pointer;
}

.catalog-search__btn:hover {
    background: var(--accent-hover);
}

.catalog-empty {
    text-align: center;
    padding: 3rem 1rem;
}

.catalog-empty__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--bg-soft);
    color: var(--text-secondary);
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

.catalog-empty__title {
    font-size: 1.15rem;
    margin-bottom: 0.4rem;
}

.catalog-empty__text {
    color: var(--text-secondary);
    margin-bottom: 1.2rem;
}

@media (max-width: 992px) {
    
    .header-main {
        flex-wrap: wrap;
    }

    
    .header-search {
        order: 3;
        max-width: none;
        flex-basis: 100%;
    }

    
    .promo-banner__icon {
        display: none;
    }

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

@media (max-width: 768px) {
    .site-main {
        padding: 1.5rem 0 2rem;
    }

    
    .topbar__item--hide-mobile {
        display: none;
    }

    
    .topbar__inner {
        flex-wrap: wrap;
        gap: 0.6rem;
    }

    
    .category-nav__inner {
        gap: 0;
    }

    
    .promo-banner {
        padding: 1.5rem;
    }

    .promo-banner__title {
        font-size: 1.3rem;
    }

    
    .theme-toggle {
        margin-top: 0;
    }

    
    .header-action__label {
        display: none;
    }
}

@media (max-width: 576px) {
    .hero__title {
        font-size: 1.4rem;
    }

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

    
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .error-code {
        font-size: 3.5rem;
    }
}