:root {
  --catalog-ink: #17252d;
  --catalog-muted: #56666f;
  --catalog-accent: #244c60;
  --catalog-line: #d8e0e4;
  --catalog-soft: #eef2f3;
}

.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand__logo { display: block; flex: none; width: 44px; height: 44px; object-fit: contain; }
.site-main { padding-block: clamp(40px, 6vw, 76px) 140px; }

.catalog-intro { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; padding-bottom: 30px; border-bottom: 1px solid var(--catalog-line); }
.catalog-intro__overline { margin: 0 0 8px; color: var(--catalog-accent); font-size: 13px; font-weight: 600; }
.catalog-intro h1 { margin: 0; color: var(--catalog-ink); font-size: clamp(30px, 4vw, 42px); font-weight: 650; letter-spacing: -.035em; line-height: 1.13; }
.catalog-intro__description { margin: 13px 0 0; color: var(--catalog-muted); font-size: 15px; }
.catalog-intro__count { margin: 0 0 3px; color: var(--catalog-muted); font-size: 14px; white-space: nowrap; }
.catalog-intro__count strong { color: var(--catalog-ink); font-weight: 650; font-variant-numeric: tabular-nums; }

.catalog-filters { display: grid; grid-template-columns: minmax(260px, 1fr) minmax(190px, 250px) auto auto; align-items: end; gap: 14px; padding: 24px 0 34px; }
.catalog-filters__search, .catalog-filters__category { min-width: 0; }
.catalog-filters label { display: block; margin-bottom: 8px; color: var(--catalog-muted); font-size: 13px; font-weight: 600; }
.catalog-filters input, .catalog-filters select { display: block; width: 100%; height: 44px; padding: 0 13px; box-sizing: border-box; border: 1px solid #aebec7; border-radius: 4px; background: #fff; color: var(--catalog-ink); font: inherit; font-size: 14px; }
.catalog-filters input::placeholder { color: #687983; opacity: 1; }
.catalog-filters input:hover, .catalog-filters select:hover { border-color: #667f8d; }
.catalog-filters__reset { align-self: end; display: inline-flex; min-height: 44px; align-items: center; color: var(--catalog-accent); font-size: 14px; text-underline-offset: 3px; }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 40px; padding: 8px 16px; box-sizing: border-box; border-radius: 4px; cursor: pointer; font: inherit; font-size: 14px; font-weight: 600; line-height: 1.25; text-align: center; text-decoration: none; white-space: nowrap; }
.button--primary { border: 1px solid var(--catalog-accent); background: var(--catalog-accent); color: #fff; }
.button--primary:hover { background: #183b4e; }
.button--quiet { min-height: 36px; border: 1px solid #aabdc6; background: #fff; color: var(--catalog-accent); }
.button--quiet:hover { border-color: var(--catalog-accent); background: #edf2f4; }
.button:disabled { cursor: not-allowed; opacity: .55; }
.catalog-filters__submit { min-height: 44px; }

.catalog-results__heading { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; padding: 0 0 14px; }
.catalog-results__heading h2 { margin: 0; color: var(--catalog-ink); font-size: 20px; font-weight: 650; letter-spacing: -.02em; }
.catalog-results__heading p { margin: 0; color: var(--catalog-muted); font-size: 13px; white-space: nowrap; }
.catalog-table-wrap { border-top: 1px solid var(--catalog-line); }
.catalog-table { width: 100%; border-collapse: collapse; table-layout: fixed; background: #fff; }
.catalog-table th, .catalog-table td { padding: 12px 16px; border-bottom: 1px solid #e7ecee; color: var(--catalog-ink); font-size: 14px; line-height: 1.35; text-align: left; vertical-align: middle; overflow-wrap: anywhere; }
.catalog-table thead th { color: var(--catalog-muted); font-size: 12px; font-weight: 600; }
.catalog-table thead th:nth-child(1) { width: 33%; }
.catalog-table thead th:nth-child(2) { width: 39%; }
.catalog-table thead th:nth-child(3), .catalog-table thead th:nth-child(4) { width: 14%; }
.catalog-table__group { border-top: 2px solid var(--catalog-line); }
.catalog-table__group:first-of-type { border-top-width: 1px; }
.catalog-table__group tr:hover { background: #f8fafb; }
.catalog-table__group tr.is-selected, .catalog-list__variant.is-selected { background: #e8f1f5; }
.catalog-table__product { background: #fff; font-weight: 400; vertical-align: top !important; }
.catalog-table__product-inner { display: flex; align-items: flex-start; gap: 14px; }
.catalog-table__product-inner > div { min-width: 0; }
.catalog-table__name { display: block; font-weight: 650; overflow-wrap: anywhere; }
.catalog-table__meta { display: block; margin-top: 5px; color: var(--catalog-muted); font-size: 12px; }
.catalog-table__number { text-align: right !important; font-variant-numeric: tabular-nums; white-space: nowrap; }
.catalog-table__price { font-weight: 650; }
.catalog-table__unavailable, .catalog-list__unavailable { color: var(--catalog-muted) !important; font-size: 13px; }
.product-photo { display: block; flex: none; width: 64px; height: 64px; box-sizing: border-box; border: 1px solid #e2e8ea; border-radius: 3px; background: var(--catalog-soft); object-fit: contain; }
.product-photo--empty { display: flex; align-items: center; justify-content: center; padding: 5px; color: var(--catalog-muted); font-size: 11px; line-height: 1.2; text-align: center; }
.variant-choice-label { display: inline-flex; align-items: center; gap: 12px; min-height: 28px; cursor: pointer; }
.variant-choice { flex: none; width: 18px; height: 18px; margin: 0; accent-color: var(--catalog-accent); cursor: pointer; }
.variant-choice:disabled { cursor: not-allowed; }
.variant-choice-label:has(.variant-choice:disabled) { color: var(--catalog-muted); cursor: not-allowed; }
.variant-sku { display: block; margin: 2px 0 0 30px; color: var(--catalog-muted); font-size: 12px; }
.catalog-list { display: none; }

.catalog-empty { min-height: 190px; padding: 52px 24px; border-top: 1px solid var(--catalog-line); background: #fff; text-align: center; box-sizing: border-box; }
.catalog-empty h3 { margin: 0; color: var(--catalog-ink); font-size: 19px; font-weight: 650; }
.catalog-empty p { margin: 8px 0 0; color: var(--catalog-muted); font-size: 14px; }
.catalog-empty a { display: inline-block; margin-top: 18px; color: var(--catalog-accent); font-size: 14px; font-weight: 600; text-underline-offset: 3px; }
.pagination { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 22px 0 0; color: var(--catalog-muted); font-size: 14px; }
.pagination a { min-height: 36px; display: inline-flex; align-items: center; color: var(--catalog-accent); font-weight: 600; text-underline-offset: 3px; }

.calculation-launcher { position: fixed; right: max(20px, env(safe-area-inset-right)); bottom: max(20px, env(safe-area-inset-bottom)); z-index: 5; display: flex; align-items: center; gap: 12px; max-width: min(360px, calc(100vw - 32px)); min-height: 58px; padding: 9px 18px; border: 1px solid #183b4e; border-radius: 30px; background: var(--catalog-accent); color: #fff; box-shadow: 0 8px 24px #10212b29; cursor: pointer; text-align: left; font: inherit; }
.calculation-launcher:hover { background: #183b4e; }
.calculation-launcher__icon { display: grid; place-items: center; width: 28px; height: 28px; font-size: 24px; line-height: 1; }
.calculation-launcher > span:last-child { display: grid; min-width: 0; }
.calculation-launcher strong { font-size: 14px; font-weight: 650; }
.calculation-launcher small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; opacity: .87; }
.calculation-dialog { position: fixed; inset: 0 0 0 auto; width: min(420px, 100%); height: 100dvh; max-width: none; max-height: none; margin: 0; padding: 26px 26px 32px; box-sizing: border-box; overflow-y: auto; border: 0; border-left: 1px solid var(--catalog-line); border-radius: 0; background: #fff; color: var(--catalog-ink); box-shadow: -12px 0 48px #10212b24; }
.calculation-dialog::backdrop { background: #10212b80; }
.calculation-dialog [hidden] { display: none !important; }
.calculation-dialog__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.calculation-dialog h2 { margin: 0; font-size: 23px; font-weight: 650; letter-spacing: -.025em; line-height: 1.2; }
.dialog-close { display: grid; place-items: center; flex: none; width: 36px; height: 36px; border: 0; border-radius: 4px; background: transparent; color: var(--catalog-ink); cursor: pointer; font: inherit; font-size: 27px; line-height: 1; }
.dialog-close:hover { background: var(--catalog-soft); }
.calculation-dialog__empty { margin: 24px 0 10px; padding: 20px; border: 1px solid var(--catalog-line); background: #f8fafb; }
.calculation-dialog__empty p { margin: 0 0 14px; font-size: 14px; line-height: 1.45; }
.calculation-dialog__item { display: flex; align-items: center; gap: 12px; min-width: 0; margin-top: 20px; padding: 12px 0; border-block: 1px solid var(--catalog-line); }
.calculation-dialog__image { flex: none; width: 52px; height: 52px; object-fit: contain; border: 1px solid var(--catalog-line); border-radius: 3px; background: var(--catalog-soft); }
.calculation-dialog__item-copy { min-width: 0; }
.calculation-dialog__product { margin: 0; font-size: 15px; font-weight: 650; line-height: 1.3; overflow-wrap: anywhere; }
.calculation-dialog__variant { margin: 4px 0 0; font-size: 14px; }
.calculation-dialog__base { margin: 5px 0 0; color: var(--catalog-muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.calculation-dialog__description { margin: 18px 0; color: var(--catalog-muted); font-size: 13px; line-height: 1.45; }
.calculation-form__fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 14px; }
.calculation-form__field { min-width: 0; }
.calculation-form label { display: block; margin-bottom: 6px; color: var(--catalog-ink); font-size: 13px; font-weight: 600; }
.calculation-form input { width: 100%; height: 42px; box-sizing: border-box; padding: 0 11px; border: 1px solid #aebec7; border-radius: 4px; background: #fff; color: var(--catalog-ink); font: inherit; font-size: 16px; font-variant-numeric: tabular-nums; }
.calculation-form input::placeholder { color: #687983; opacity: 1; font-size: 13px; }
.calculation-form input[aria-invalid="true"] { border-color: #ad3d31; }
.calculation-form__error { min-height: 0; margin: 4px 0 0; color: #9b2f27; font-size: 12px; line-height: 1.3; }
.calculation-form__error:empty { display: none; }
.calculation-form__submit { width: 100%; margin-top: 18px; }
.calculation-result { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--catalog-line); }
.calculation-result h3 { margin: 0 0 12px; font-size: 15px; font-weight: 650; }
.calculation-result dl { margin: 0; }
.calculation-result dl > div { display: flex; justify-content: space-between; align-items: baseline; gap: 14px; padding: 5px 0; font-size: 14px; }
.calculation-result dt { color: var(--catalog-muted); }
.calculation-result dt span { white-space: nowrap; }
.calculation-result dd { margin: 0; font-variant-numeric: tabular-nums; font-weight: 600; white-space: nowrap; }
.calculation-result__total { margin-top: 8px; padding-top: 14px !important; border-top: 1px solid var(--catalog-line); font-size: 18px !important; }
.calculation-result__total dt, .calculation-result__total dd { color: var(--catalog-ink); font-weight: 700; }
.calculation-result > p { margin: 11px 0 0; color: var(--catalog-muted); font-size: 12px; }

@media (max-width: 900px) {
  .catalog-table-wrap { display: none; }
  .catalog-list { display: block; margin: 0; padding: 0; border-top: 1px solid var(--catalog-line); list-style: none; background: #fff; }
  .catalog-list__item { padding: 18px 16px 22px; border-bottom: 2px solid var(--catalog-line); }
  .catalog-list__identity { display: flex; align-items: flex-start; gap: 14px; min-width: 0; margin-bottom: 18px; }
  .catalog-list__identity > div { min-width: 0; }
  .catalog-list__identity h3 { margin: 0; color: var(--catalog-ink); font-size: 16px; font-weight: 650; line-height: 1.3; overflow-wrap: anywhere; }
  .catalog-list__identity p { margin: 5px 0 0; color: var(--catalog-muted); font-size: 12px; }
  .catalog-list__columns, .catalog-list__variant { display: grid; grid-template-columns: minmax(0, 1fr) 100px 82px; align-items: center; gap: 8px; }
  .catalog-list__columns { padding: 0 8px 7px; color: var(--catalog-muted); font-size: 11px; }
  .catalog-list__columns span:not(:first-child) { text-align: right; }
  .catalog-list__variant { min-height: 48px; padding: 6px 8px; box-sizing: border-box; border-top: 1px solid #e7ecee; cursor: pointer; font-size: 13px; }
  .catalog-list__variant-name { display: grid; grid-template-columns: 18px minmax(0, 1fr); align-items: center; gap: 4px 8px; min-width: 0; }
  .catalog-list__variant-name span { overflow-wrap: anywhere; }
  .catalog-list__variant-name small { grid-column: 2; color: var(--catalog-muted); font-size: 11px; }
  .catalog-list__variant:has(.variant-choice:disabled) { cursor: not-allowed; }
  .catalog-list__number { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
}

@media (max-width: 700px) {
  .catalog-filters { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .catalog-filters__search { grid-column: 1 / -1; }
  .catalog-filters__category { grid-column: 1; }
  .catalog-filters__submit { grid-column: 2; }
  .catalog-filters__reset { grid-column: 1 / -1; min-height: 22px; }
}

@media (max-width: 600px) {
  .site-main { padding-block: 36px 130px; }
  .catalog-intro { align-items: flex-start; flex-direction: column; gap: 12px; padding-bottom: 22px; }
  .catalog-intro h1 { font-size: clamp(28px, 8vw, 34px); }
  .catalog-intro__description { margin-top: 10px; font-size: 14px; }
  .catalog-intro__count { font-size: 13px; }
  .catalog-filters { gap: 12px; padding: 22px 0 30px; }
  .catalog-filters label { margin-bottom: 7px; }
  .catalog-filters__submit { padding-inline: 10px; }
  .catalog-results__heading h2 { font-size: 19px; }
  .catalog-list__item { padding: 16px 10px 18px; }
  .catalog-list__identity { gap: 10px; }
  .catalog-list__identity h3 { font-size: 15px; }
  .calculation-launcher { right: 16px; bottom: max(12px, env(safe-area-inset-bottom)); left: 16px; max-width: none; justify-content: center; border-radius: 9px; }
  .calculation-dialog { inset: auto 0 0; width: 100%; height: auto; max-height: 94dvh; margin: auto 0 0; padding: 20px 20px max(24px, env(safe-area-inset-bottom)); border: 1px solid var(--catalog-line); border-bottom: 0; border-radius: 9px 9px 0 0; }
}

@media (max-width: 390px) {
  .catalog-list__columns, .catalog-list__variant { grid-template-columns: minmax(0, 1fr) 76px 58px; gap: 5px; }
  .catalog-list__variant { font-size: 12px; }
  .catalog-list__variant-name { gap: 4px; }
  .catalog-list__number { font-size: 12px; }
  .calculation-form__fields { gap: 11px; }
  .calculation-form label { min-height: 36px; line-height: 1.25; }
  .calculation-result dl > div { flex-wrap: wrap; gap: 3px 12px; }
}

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }