:root {
      --navy: #0A1B30;
      --navy-mid: #12324F;
      --paper: #F7F9FC;
      --mist: #EDF1F6;
      --white: #FFFFFF;
      --line: #DCE3EB;
      --steel: #2B6CB0;
      --teal: #0D9488;
      --cta: #9B2C2C;
      --cta-hover: #7F1D1D;
      --cta-soft: #C45A5A;
      --ink: #0A1B30;
      --muted: #4E5D6E;
      --max-width: 1320px;
      --header-height: 72px;
      --font-display: 'Archivo', sans-serif;
      --font-body: 'Libre Franklin', system-ui, sans-serif;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.55;
      color: var(--ink);
      background: var(--paper);
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; display: block; }
    a { color: var(--cta); }
    button { font-family: inherit; }

    .visually-hidden {
      position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0);
    }


    .header {
      position: sticky; top: 0; z-index: 100;
      background: var(--white);
      border-bottom: 1px solid var(--line);
      height: var(--header-height);
    }
    .header-inner {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 1.5rem;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1.5rem;
    }
    .logo { display: flex; align-items: center; text-decoration: none; flex-shrink: 0; }
    .logo-img { height: 40px; width: auto; display: block; }
    .logo-img-footer {
      height: 36px; background: var(--white); border-radius: 4px; padding: 0.25rem 0.5rem;
    }
    .nav {
      display: flex; align-items: center; gap: 1.75rem;
      list-style: none; font-family: var(--font-display);
    }
    .nav a {
      color: var(--ink); text-decoration: none;
      font-size: 0.9375rem; font-weight: 500; transition: color 0.15s;
    }
    .nav a:hover, .nav a.active { color: var(--steel); }
    .header-actions { display: flex; align-items: center; gap: 1.25rem; flex-shrink: 0; }
    .phone-link {
      display: flex; align-items: center; gap: 0.375rem;
      color: var(--navy); text-decoration: none; font-weight: 600;
      font-size: 0.9375rem; white-space: nowrap;
    }
    .lang-switch {
      display: inline-flex; align-items: center;
      border: 1px solid var(--line); border-radius: 6px; overflow: hidden;
    }
    .lang-switch a {
      font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em;
      padding: 0.4rem 0.55rem; text-decoration: none; color: var(--muted); background: var(--white);
    }
    .lang-switch a.active { background: var(--navy); color: var(--white); }

    .btn {
      display: inline-flex; align-items: center; justify-content: center;
      padding: 0.625rem 1.25rem; border-radius: 6px;
      font-family: var(--font-body); font-size: 0.9375rem; font-weight: 600;
      text-decoration: none; cursor: pointer; border: 2px solid transparent;
      transition: background 0.15s, color 0.15s, border-color 0.15s; white-space: nowrap;
    }
    .btn-lg { padding: 0.75rem 1.35rem; }
    .btn-sm { padding: 0.5rem 0.875rem; font-size: 0.8125rem; }
    .btn-primary { background: var(--cta); color: var(--white); }
    .btn-primary:hover { background: var(--cta-hover); color: var(--white); }
    .btn-outline { background: transparent; color: var(--navy); border-color: var(--navy); }
    .btn-outline:hover { background: var(--navy); color: var(--white); }
    .btn-white { background: var(--white); color: var(--cta); }
    .btn-white:hover { background: #F7DEDE; color: var(--cta-hover); }
    .btn-ghost-light {
      background: transparent; color: var(--white); border-color: rgba(255,255,255,0.4);
    }
    .btn-ghost-light:hover { background: var(--white); color: var(--cta); border-color: var(--white); }

    .menu-toggle {
      display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; color: var(--navy);
    }
    .container { max-width: var(--max-width); margin: 0 auto; padding: 0 40px; }
    .section { padding: 64px 0; }
    .section-mist { background: var(--mist); }
    .section-white { background: var(--white); border-top: 1px solid var(--line); }

    .kicker {
      font-size: 16px; font-weight: 700; letter-spacing: 0.12em;
      text-transform: uppercase; color: var(--cta); margin: 0 0 16px;
    }
    .section-title {
      font-family: var(--font-display);
      font-size: clamp(2rem, 3.2vw, 2.8rem);
      font-weight: 600; letter-spacing: -0.032em; line-height: 1.06;
      color: var(--navy); margin: 0 0 18px;
    }
    .section-subtitle {
      font-size: 17px; line-height: 1.65; color: var(--muted); font-weight: 400; max-width: 36rem; margin: 0;
    }

    .crumb {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 22px 40px 0;
      font-size: 13px;
      color: var(--muted);
    }
    .crumb a { color: var(--steel); text-decoration: none; }
    .crumb a:hover { color: var(--cta); }

    /* Product stage */
    .pdp {
      padding: 28px 0 72px;
    }
    .pdp-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
      gap: 40px;
      align-items: start;
    }
    .gallery-row {
      display: grid;
      grid-template-columns: 76px 1fr;
      gap: 12px;
    }
    .gallery-thumbs {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .gallery-thumb {
      aspect-ratio: 1;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 6px;
      overflow: hidden;
      cursor: pointer;
      padding: 0;
    }
    .gallery-thumb img { width: 100%; height: 100%; object-fit: contain; padding: 6px; }
    .gallery-thumb.active { border-color: var(--navy); box-shadow: inset 0 0 0 1px var(--navy); }
    .gallery-main {
      aspect-ratio: 1;
      background:
        radial-gradient(120% 80% at 50% 110%, rgba(13,148,136,0.12), transparent 55%),
        linear-gradient(180deg, #E8EEF5 0%, #F7F9FC 100%);
      border: 1px solid var(--line);
      border-radius: 8px;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .gallery-row.single { grid-template-columns: 1fr; }
    .gallery-main img { width: 88%; height: 88%; object-fit: contain; }
    .gallery-main.chem {
      background: linear-gradient(180deg, #F4F8F7 0%, #FFFFFF 100%);
    }
    .gallery-main.chem img { width: 86%; height: 86%; }
    .downloads { display: flex; flex-direction: column; gap: 10px; max-width: 36rem; margin-top: 28px; }

    .buy {
      position: sticky;
      top: calc(var(--header-height) + 18px);
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 8px;
      padding: 32px 32px 28px;
    }
    .buy .kicker { font-size: 13px; margin-bottom: 10px; color: var(--steel); }
    .buy h1 {
      font-family: var(--font-display);
      font-size: clamp(1.8rem, 2.6vw, 2.35rem);
      font-weight: 600;
      letter-spacing: -0.035em;
      line-height: 1.05;
      color: var(--navy);
      margin: 0 0 14px;
    }
    .buy .lede {
      font-size: 15.5px;
      line-height: 1.6;
      color: var(--muted);
      margin: 0 0 22px;
    }
    .metrics {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      margin: 0 0 24px;
    }
    .metric {
      background: linear-gradient(160deg, #fff, #F3F7FB);
      border: 1px solid var(--line);
      border-radius: 6px;
      padding: 14px 14px 12px;
    }
    .metric b {
      display: block;
      font-family: var(--font-display);
      font-size: 22px;
      font-weight: 600;
      letter-spacing: -0.03em;
      line-height: 1;
      margin-bottom: 6px;
    }
    .metric span { font-size: 12px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }
    .metric:nth-child(1) b { color: var(--cta); }
    .metric:nth-child(2) b { color: var(--steel); }
    .metric:nth-child(3) b { color: var(--teal); }
    .metric:nth-child(4) b { color: var(--cta-soft); }
    .buy-ctas { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; }
    .buy-ctas .btn-primary { flex: 1; min-width: 160px; }
    .buy-phone {
      font-size: 0.9375rem;
      color: var(--navy-mid);
      margin: 0 0 18px;
    }
    .buy-phone a { color: inherit; text-decoration: none; }
    .buy-phone strong { color: var(--navy); }
    .buy-phone a:hover strong { color: var(--cta); }
    .fit {
      display: flex; flex-wrap: wrap; gap: 8px;
      padding-top: 16px; border-top: 1px solid var(--line);
    }
    .fit a {
      font-size: 12px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
      text-decoration: none; color: var(--navy);
      background: var(--mist); border-radius: 4px; padding: 0.35rem 0.6rem;
    }
    .fit a:hover { background: var(--navy); color: var(--white); }

    /* Features */
    .why-layout {
      display: grid;
      grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.4fr);
      gap: 32px 40px;
      align-items: center;
    }
    .why-layout .lead { max-width: 22rem; }
    .why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .why-card {
      background: linear-gradient(160deg, #fff, #F3F7FB);
      border: 1px solid var(--line);
      border-radius: 6px;
      padding: 18px 18px 20px;
    }
    .why-meta {
      display: flex; align-items: baseline; gap: 0.45em; margin: 0 0 8px;
      font-size: 12px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
    }
    .why-card:nth-child(4n+1) .why-meta { color: var(--cta); }
    .why-card:nth-child(4n+2) .why-meta { color: var(--steel); }
    .why-card:nth-child(4n+3) .why-meta { color: var(--teal); }
    .why-card:nth-child(4n+4) .why-meta { color: var(--cta-soft); }
    .why-card h3 {
      font-family: var(--font-display); font-size: 16px; font-weight: 600;
      letter-spacing: -0.015em; color: var(--navy); margin: 0 0 6px;
    }
    .why-card p { font-size: 14px; line-height: 1.5; color: var(--muted); font-weight: 300; }

    /* Specs */
    .specs-board {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .spec-col {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 8px;
      padding: 24px 24px 10px;
    }
    .spec-col h3 {
      font-family: var(--font-display);
      font-size: 15px; font-weight: 600; letter-spacing: -0.01em;
      color: var(--navy); margin: 0 0 16px; padding-bottom: 12px;
      border-bottom: 1px solid var(--line);
    }
    .spec-row {
      display: grid; grid-template-columns: 1fr 1.1fr; gap: 12px;
      padding: 11px 0; border-bottom: 1px solid var(--mist);
      font-size: 13.5px;
    }
    .spec-row:last-child { border-bottom: none; }
    .spec-row dt { color: var(--muted); font-weight: 500; }
    .spec-row dd { color: var(--navy); font-weight: 600; }
    .source-note { font-size: 13px; color: var(--muted); margin-top: 22px; }
    .source-note a { color: var(--steel); }

    .download-item {
      display: flex; align-items: center; justify-content: space-between; gap: 1rem;
      padding: 1rem 1.25rem; background: var(--white);
      border: 1px solid var(--line); border-radius: 8px;
      text-decoration: none; color: inherit;
    }
    .download-item:hover { border-color: var(--steel); }
    .download-item strong { display: block; color: var(--navy); font-size: 0.9375rem; }
    .download-item span { font-size: 0.8125rem; color: var(--muted); }
    .download-tag { font-size: 0.75rem; font-weight: 700; color: var(--steel); }

    .featured-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
    .product-card {
      border: 1px solid var(--line); border-radius: 8px; overflow: hidden;
      background: var(--white); display: flex; flex-direction: column; text-decoration: none; color: inherit;
      transition: border-color 0.15s;
    }
    .product-card:hover { border-color: var(--steel); }
    .product-thumb {
      aspect-ratio: 4/3; background: var(--mist);
      display: flex; align-items: center; justify-content: center; overflow: hidden;
    }
    .product-thumb img { width: 100%; height: 100%; object-fit: contain; }
    .product-thumb.cover img { object-fit: cover; }
    .product-body { padding: 1.25rem; display: flex; flex-direction: column; flex: 1; }
    .product-brand {
      font-size: 0.75rem; font-weight: 600; color: var(--steel);
      text-transform: uppercase; letter-spacing: 0.06em; margin: 0 0 0.375rem;
    }
    .product-card h3 {
      font-family: var(--font-display); font-size: 1.0625rem; font-weight: 700;
      letter-spacing: -0.02em; color: var(--navy); line-height: 1.3; margin: 0 0 0.5rem;
    }
    .product-meta { font-size: 0.875rem; color: var(--muted); line-height: 1.55; margin: 0; }

    .contact-cta { position: relative; background: var(--cta); color: var(--white); overflow: hidden; }
    .contact-cta::before {
      content: ''; position: absolute; inset: 0;
      background: radial-gradient(120% 140% at 8% 0%, rgba(255,255,255,0.16), transparent 60%);
    }
    .contact-inner {
      position: relative; max-width: var(--max-width); margin: 0 auto;
      padding: 64px 40px; display: grid; grid-template-columns: 1.1fr 0.9fr;
      gap: 56px; align-items: center;
    }
    .contact-cta .kicker { color: rgba(255,255,255,0.8); }
    .contact-cta h2 {
      font-family: var(--font-display);
      font-size: clamp(2.1rem, 3.6vw, 3.1rem);
      font-weight: 600; letter-spacing: -0.035em; line-height: 1.02;
      color: #fff; margin: 0 0 20px;
    }
    .contact-cta .lede { color: rgba(255,255,255,0.82); font-size: 17px; max-width: 32rem; margin: 0 0 28px; }
    .contact-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .contact-card {
      background: rgba(6,18,31,0.18); border: 1px solid rgba(255,255,255,0.16);
      border-radius: 8px; padding: 28px 32px; display: flex; flex-direction: column; gap: 22px;
    }
    .contact-row .kicker { color: rgba(255,255,255,0.72); margin-bottom: 8px; font-size: 11px; }
    .contact-row a, .contact-row p {
      font-family: var(--font-display); font-size: 22px; font-weight: 500;
      letter-spacing: -0.01em; color: #fff; text-decoration: none; margin: 0;
    }

    .newsletter { background: var(--white); border-top: 1px solid var(--line); padding: 64px 0; }
    .newsletter-inner {
      max-width: var(--max-width); margin: 0 auto; padding: 0 40px;
      display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: start;
    }
    .newsletter h2 {
      font-family: var(--font-display); font-size: 25px; font-weight: 600;
      letter-spacing: -0.025em; color: var(--navy); margin: 0 0 10px;
    }
    .newsletter .lede { font-size: 14.5px; line-height: 1.6; color: var(--muted); font-weight: 300; max-width: 28rem; }
    .newsletter-form { display: flex; gap: 12px; flex-wrap: wrap; }
    .newsletter-form input[type="email"] {
      flex: 1; min-width: 200px; height: 54px; padding: 0 16px;
      font-family: var(--font-body); font-size: 15px; color: var(--navy);
      background: var(--paper); border: 1px solid var(--line); border-radius: 3px;
    }
    .newsletter-note { font-size: 12.5px; line-height: 1.5; color: #7A8B9C; margin-top: 14px; }
    .newsletter-note a { color: var(--navy); }
    .consent { display: flex; gap: 10px; align-items: flex-start; margin-top: 14px; font-size: 12.5px; color: #7A8B9C; }

    .footer { background: #06121F; color: #A9BCD1; font-size: 14px; }
    .footer-grid {
      max-width: var(--max-width); margin: 0 auto; padding: 64px 40px 40px;
      display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 44px;
    }
    .footer-brand p { font-weight: 300; line-height: 1.6; margin: 18px 0 20px; max-width: 20rem; }
    .footer-col h4 {
      font-size: 11px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase;
      color: #fff; margin: 0 0 18px;
    }
    .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
    .footer-col a { color: #A9BCD1; text-decoration: none; }
    .footer-col a:hover { color: #fff; }
    .social-link {
      font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase;
      color: #A9BCD1; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,0.28); padding-bottom: 3px;
    }
    .footer-bottom {
      max-width: var(--max-width); margin: 0 auto; padding: 24px 40px 48px;
      border-top: 1px solid rgba(255,255,255,0.1);
      display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
      font-size: 11.5px; color: #8095AE;
    }
    .footer-bottom a { color: #8095AE; }

    .mobile-nav {
      display: none; position: fixed; inset: 0; top: var(--header-height);
      background: var(--white); z-index: 99; padding: 1.5rem 40px;
      flex-direction: column; overflow-y: auto;
    }
    .mobile-nav.open { display: flex; }
    .mobile-nav a {
      padding: 1rem 0; border-bottom: 1px solid var(--line);
      color: var(--navy); text-decoration: none; font-family: var(--font-display); font-weight: 500;
    }
    .mobile-nav-actions { margin-top: 1.5rem; display: flex; flex-direction: column; gap: 0.75rem; }
    .mobile-nav .lang-switch { margin-top: 1.25rem; align-self: flex-start; }
    .mobile-nav .lang-switch a { padding: 0.4rem 0.55rem; border-bottom: none; font-size: 0.75rem; font-weight: 700; }

    @media (max-width: 1100px) {
      .pdp-grid, .why-layout, .specs-board, .featured-grid, .contact-inner, .newsletter-inner, .footer-grid {
        grid-template-columns: 1fr;
      }
      .buy { position: static; }
      .gallery-row { grid-template-columns: 1fr; }
      .gallery-thumbs { flex-direction: row; }
      .gallery-thumb { width: 72px; flex: 0 0 72px; }
    }
    @media (max-width: 768px) {
      .container, .crumb, .contact-inner, .newsletter-inner, .footer-grid, .footer-bottom {
        padding-left: 20px; padding-right: 20px;
      }
      .nav, .header-actions .btn-primary { display: none; }
      .header-actions .phone-link span { display: none; }
      .menu-toggle { display: block; }
      .why-grid, .metrics { grid-template-columns: 1fr 1fr; }
      .buy-ctas { flex-direction: column; }
      .buy-ctas .btn { width: 100%; }
    }
    .product-thumb { color: var(--muted); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; }
    .related-extra { margin-top: 2rem; }