:root {
      --ink: #17181c;
      --muted: #62656f;
      --line: #cfd2da;
      --paper: #fff;
      --wash: #f3f5f8;
      --accent: #0b6c99;
      --accent-soft: #e9f6fc;
      --selected: #d8f1fc;
      --radius: 12px;
      --shadow: 0 8px 24px rgba(25, 28, 35, .08);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { margin: 0; color: var(--ink); background: #dfe2e8; font: 15px/1.5 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
    button, a, select { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    button:focus-visible, a:focus-visible, summary:focus-visible, select:focus-visible { outline: 3px solid #32aee8; outline-offset: 3px; }
    .review-bar { position: sticky; top: 0; z-index: 20; display: grid; gap: 8px; padding: 10px 12px; background: #17181c; color: #fff; box-shadow: var(--shadow); }
    body.canvas-mode .review-bar { display: none; }
    .review-bar__row { display: flex; align-items: center; gap: 8px; overflow-x: auto; scrollbar-width: none; }
    .review-bar__row::-webkit-scrollbar { display: none; }
    .review-label { flex: none; color: #cfd2da; font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
    .review-tab, .test-toggle { flex: none; min-height: 38px; padding: 8px 12px; border: 1px solid #676a73; border-radius: 999px; background: #282a30; color: #fff; cursor: pointer; }
    .review-tab[aria-selected="true"], .test-toggle[aria-pressed="true"] { background: #fff; color: #111; border-color: #fff; }
    .viewport { width: min(100%, 1440px); min-height: 100vh; margin: 0 auto; background: var(--paper); }
    .screen[hidden] { display: none; }
    /* Equal side controls keep the wordmark truly centered on narrow screens. */
    .site-header { position: relative; display: grid; grid-template-columns: 44px minmax(0, 1fr) 44px; align-items: center; min-height: 58px; padding: 7px 16px; border-bottom: 1px solid var(--line); }
    .logo { justify-self: center; color: var(--ink); font-size: 18px; font-weight: 800; text-decoration: none; white-space: nowrap; }
    .menu-toggle, .header-cart { display: inline-grid; width: 44px; height: 44px; place-items: center; padding: 0; border: 0; background: transparent; color: var(--ink); cursor: pointer; }
    .menu-toggle { justify-items: center; align-content: center; gap: 4px; }
    .menu-toggle span { display: block; width: 21px; height: 2px; background: currentColor; }
    .header-cart { justify-self: end; }
    .header-cart svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
    /* The overlay keeps navigation out of the hero while remaining reachable from the hamburger. */
    .site-menu { position: absolute; top: 100%; right: 0; left: 0; z-index: 10; display: grid; padding: 8px 16px 16px; border-bottom: 1px solid var(--line); background: var(--paper); box-shadow: var(--shadow); }
    .site-menu a { min-height: 48px; display: flex; align-items: center; border-bottom: 1px solid var(--line); color: var(--ink); font-weight: 750; text-decoration: none; }
    .site-menu a:last-child { border-bottom: 0; }
    .site-header__tag { color: var(--muted); font-size: 12px; text-align: center; }
    .header-link { color: var(--ink); font-weight: 700; text-decoration: none; }
    main { display: block; }
    .section { padding: 48px 18px; border-bottom: 1px solid var(--line); }
    .section--wash { background: var(--wash); }
    .section--accent { background: var(--accent-soft); }
    .container { width: min(100%, 1120px); margin: 0 auto; }
    .eyebrow { margin: 0 0 10px; color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 15ch; margin-bottom: 16px; font-size: clamp(34px, 9vw, 64px); line-height: 1.02; letter-spacing: -.035em; }
    h2 { max-width: 20ch; margin-bottom: 14px; font-size: clamp(27px, 7vw, 44px); line-height: 1.08; letter-spacing: -.025em; }
    h3 { margin-bottom: 8px; font-size: 19px; line-height: 1.2; }
    .lede { max-width: 58ch; color: #34363d; font-size: 17px; }
    .small { color: var(--muted); font-size: 13px; }
    .button-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
    .button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 12px 18px; border: 2px solid var(--ink); border-radius: 10px; background: var(--ink); color: #fff; font-weight: 800; text-decoration: none; cursor: pointer; }
    .button--secondary { background: transparent; color: var(--ink); }
    .button--full { width: 100%; }
    .hero-grid, .split { display: grid; gap: 28px; align-items: center; }
    .media-placeholder { display: grid; min-height: 280px; place-items: center; padding: 20px; border: 2px dashed #9da1aa; border-radius: var(--radius); background: #eceef2; color: #575a64; text-align: center; }
    .media-placeholder--portrait { min-height: 420px; }
    .media-placeholder--detail { min-height: 230px; }
    .chip-row { display: flex; gap: 8px; padding: 4px 2px 10px; overflow-x: auto; scrollbar-width: none; }
    .chip-row::-webkit-scrollbar { display: none; }
    .chip { flex: none; min-height: 44px; padding: 10px 16px; border: 1px solid #a8abb3; border-radius: 999px; background: #fff; color: var(--ink); font-weight: 750; cursor: pointer; }
    .chip[aria-pressed="true"] { border-color: var(--accent); background: var(--selected); color: #063d57; }
    .preview-card { display: grid; gap: 16px; margin-top: 14px; padding: 18px; border: 2px solid var(--ink); border-radius: var(--radius); background: #fff; }
    .preview-card__media { min-height: 230px; }
    .tool-label { display: inline-flex; width: fit-content; padding: 6px 9px; border-radius: 999px; background: var(--accent-soft); color: #064b6b; font-size: 12px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
    .card-grid { display: grid; gap: 14px; margin-top: 22px; }
    .card { padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
    .card ul { margin-bottom: 0; padding-left: 20px; }
    .mechanism-list { display: grid; gap: 12px; margin: 20px 0 0; padding: 0; list-style: none; }
    .mechanism-list li { display: grid; grid-template-columns: 38px 1fr; gap: 12px; align-items: start; padding: 14px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
    .number { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 50%; background: var(--ink); color: #fff; font-weight: 800; }
    .comparison { display: grid; gap: 12px; }
    .product-card { display: grid; gap: 12px; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
    .product-card--recommended { border: 2px solid var(--accent); }
    .included { display: grid; gap: 7px; margin: 0; padding: 0; list-style: none; }
    .included li::before { content: "✓"; margin-right: 8px; font-weight: 900; }
    .not-included { color: var(--muted); }
    .not-included::before { content: "-" !important; }
    .recipient-grid { display: grid; gap: 14px; }
    .quote { margin: 0; padding: 18px; border-left: 5px solid var(--accent); background: #fff; font-size: 18px; }
    .quote footer { margin-top: 10px; color: var(--muted); font-size: 13px; }
    .breadcrumbs { display: flex; gap: 8px; margin-bottom: 18px; color: var(--muted); font-size: 13px; }
    .breadcrumbs a { color: inherit; }
    .chooser-result { margin-top: 18px; }
    .chooser-result[hidden] { display: none; }
    .product-hero { display: grid; gap: 22px; }
    .gallery { display: grid; gap: 10px; }
    .thumbnail-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
    .thumb { min-height: 70px; border: 1px dashed #9da1aa; border-radius: 8px; background: #eceef2; }
    .rating-proof { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; margin: 10px 0; color: #34363d; }
    .rating-proof strong { color: var(--ink); }
    .price { margin: 8px 0 14px; font-size: 28px; font-weight: 850; }
    .compare-price { margin-left: 8px; color: var(--muted); font-size: 16px; text-decoration: line-through; }
    .selector-group { margin: 18px 0; }
    .selector-label { display: flex; justify-content: space-between; margin-bottom: 8px; font-weight: 800; }
    .option-grid { display: flex; flex-wrap: wrap; gap: 8px; }
    .option { min-width: 46px; min-height: 44px; padding: 8px 12px; border: 1px solid #a8abb3; border-radius: 8px; background: #fff; cursor: pointer; }
    .option[aria-pressed="true"] { border: 2px solid var(--ink); background: var(--selected); }
    .swatch { width: 42px; min-width: 42px; padding: 0; border-radius: 50%; background: var(--swatch, #ddd); }
    .offer-list { display: grid; gap: 10px; margin: 18px 0; }
    .offer { display: grid; grid-template-columns: auto 1fr auto; gap: 10px; align-items: start; padding: 14px; border: 1px solid #a8abb3; border-radius: 10px; cursor: pointer; }
    .offer:has(input:checked) { border: 2px solid var(--ink); background: var(--accent-soft); }
    .offer input { width: 20px; height: 20px; margin-top: 2px; }
    .offer__price { text-align: right; font-weight: 800; }
    .offer__badge { grid-column: 2 / -1; width: fit-content; padding: 3px 7px; border-radius: 999px; background: #fff; font-size: 11px; font-weight: 800; text-transform: uppercase; }
    .purchase-status { min-height: 22px; margin: 10px 0 0; color: #075a2e; font-weight: 700; }
    .spec-grid { display: grid; gap: 12px; }
    .spec { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
    details { border-top: 1px solid var(--line); }
    details:last-child { border-bottom: 1px solid var(--line); }
    summary { min-height: 52px; padding: 15px 2px; font-weight: 800; cursor: pointer; }
    details p, details ul { padding-right: 8px; }
    .sticky-buy { position: sticky; bottom: 0; z-index: 10; display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; padding: 10px 16px; border-top: 1px solid var(--line); background: rgba(255,255,255,.96); box-shadow: 0 -8px 20px rgba(20,24,32,.08); backdrop-filter: blur(8px); }
    .sticky-buy[hidden] { display: none; }
    .sticky-buy .button { min-height: 44px; padding: 9px 15px; }
    .screen-footer { padding: 30px 18px 90px; background: #202126; color: #fff; }
    .screen-footer a { color: #fff; }
    .toast { position: fixed; right: 14px; bottom: 80px; z-index: 30; max-width: 320px; padding: 13px 16px; border-radius: 10px; background: #17181c; color: #fff; box-shadow: var(--shadow); }
    .toast[hidden] { display: none; }
    @media (min-width: 760px) {
      .review-bar { grid-template-columns: 1fr auto; align-items: center; }
      .section { padding: 72px 32px; }
      .hero-grid, .split { grid-template-columns: 1.05fr .95fr; gap: 48px; }
      .hero-grid .media-placeholder { min-height: 520px; }
      .card-grid { grid-template-columns: repeat(3, 1fr); }
      .comparison { grid-template-columns: repeat(4, 1fr); }
      .recipient-grid { grid-template-columns: 1fr 1fr; }
      .product-hero { grid-template-columns: minmax(0, 1.1fr) minmax(340px, .9fr); align-items: start; }
      .purchase-panel { position: sticky; top: 116px; }
      .mechanism-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
      .spec-grid { grid-template-columns: 1fr 1fr; column-gap: 30px; }
      .sticky-buy { display: none !important; }
    }
    @media (min-width: 1100px) {
      .comparison { grid-template-columns: repeat(5, 1fr); }
    }

    body.skeleton-mode {
      --ink: #000;
      --muted: #000;
      --line: #000;
      --paper: #fff;
      --wash: #fff;
      --accent: #000;
      --accent-soft: #fff;
      --selected: #000;
      --radius: 0;
      --shadow: none;
      color: #000;
      background: #fff;
      font-family: Arial, Helvetica, sans-serif;
    }
    body.skeleton-mode button:focus-visible,
    body.skeleton-mode a:focus-visible,
    body.skeleton-mode summary:focus-visible,
    body.skeleton-mode select:focus-visible { outline-color: #000; }
    body.skeleton-mode .viewport { max-width: 1280px; box-shadow: none; }
    body.skeleton-mode .site-header { border-color: #000; background: #fff; }
    body.skeleton-mode .logo,
    body.skeleton-mode .site-header__tag,
    body.skeleton-mode .header-link,
    body.skeleton-mode .eyebrow,
    body.skeleton-mode .lede,
    body.skeleton-mode .small { color: #000; }
    body.skeleton-mode h1,
    body.skeleton-mode h2,
    body.skeleton-mode h3 { letter-spacing: 0; }
    body.skeleton-mode .section,
    body.skeleton-mode .section--wash,
    body.skeleton-mode .section--accent { border-color: #000; background: #fff; }
    body.skeleton-mode .media-placeholder { border-color: #000; border-radius: 0; background: #fff; color: #000; }
    body.skeleton-mode .button { border-color: #000; border-radius: 0; background: #000; color: #fff; }
    body.skeleton-mode .button--secondary { background: #fff; color: #000; }
    body.skeleton-mode .chip { border-color: #000; border-radius: 0; background: #fff; color: #000; }
    body.skeleton-mode .chip[aria-pressed="true"] { border-width: 2px; background: #000; color: #fff; }
    body.skeleton-mode .preview-card,
    body.skeleton-mode .card,
    body.skeleton-mode .mechanism-list li,
    body.skeleton-mode .product-card,
    body.skeleton-mode .quote { border: 1px solid #000; border-radius: 0; background: #fff; box-shadow: none; }
    body.skeleton-mode .product-card--recommended { border-width: 2px; }
    body.skeleton-mode .tool-label { border: 1px solid #000; border-radius: 0; background: #fff; color: #000; }
    body.skeleton-mode .number { border-radius: 0; background: #000; color: #fff; }
    body.skeleton-mode .quote { font-size: 16px; }
    body.skeleton-mode .quote footer { color: #000; }
    body.skeleton-mode details,
    body.skeleton-mode .spec { border-color: #000; }
    body.skeleton-mode .screen-footer { border-top: 1px solid #000; background: #fff; color: #000; }
    body.skeleton-mode .screen-footer a { color: #000; }
    body.skeleton-mode .toast { border: 2px solid #000; border-radius: 0; background: #fff; color: #000; box-shadow: none; }
    @media (min-width: 800px) {
      body.skeleton-mode { padding: 24px; }
      body.skeleton-mode .viewport { border: 1px solid #000; }
      body.skeleton-mode .section { padding: 72px 48px; }
    }

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