.catalog-brand-jump{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.catalog-brand-jump a{display:flex;align-items:center;gap:16px;padding:13px 19px;border:1px solid #9cc8d8;border-radius:6px;background:#ffffffb8;color:#123b60;font-size:1.05rem;font-weight:700;line-height:1.5;transition:background .2s}
.catalog-brand-jump a>span{font-size:.875rem;font-weight:400}
.catalog-brand-jump a[aria-current="page"]{background:#02256e;border-color:#02256e;color:#fff;box-shadow:0 3px 0 #52becd}
.catalog-brand-jump a:hover{background:#d8f4f7;color:#123b60}
.catalog-brand.spa-brand{max-width:260px;background:#103a53;border-color:#103a53;transform:none;padding:29px 25px}
.catalog-brand.spa-brand img{width:210px;height:auto}
.catalog-brand.spa-brand span{color:#e0f4f7;font-size:.8rem;text-align:center;margin-top:10px}
.spa-catalog .product-image{padding:0;background:transparent;aspect-ratio:360/230;height:auto}
.spa-catalog .product-image::after{display:none}
.spa-catalog .product-image img{display:block;filter:none;height:auto;object-fit:contain}
@media(max-width:600px){.catalog-brand-jump{gap:9px}.catalog-brand-jump a{flex:1;min-width:140px;align-items:start;flex-direction:column;gap:2px;padding:12px 15px}.catalog-brand-jump a>span{font-size:.8125rem}}
.catalog-intro{background:linear-gradient(120deg,#e7f9fc,#f6fbff 62%,#e3f4fc);padding:35px 0 37px;border-bottom:1px solid #cce7ef}
.breadcrumb{display:flex;flex-wrap:wrap;gap:11px;align-items:center;font-size:.875rem;color:#385a77;margin-bottom:27px}
.breadcrumb a{text-decoration:underline;text-underline-offset:4px}
.breadcrumb span[aria-hidden]{color:#8aa8b9}
.catalog-intro-grid{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
.catalog-intro .eyebrow{font-size:.8125rem;margin-bottom:14px;letter-spacing:.065em}
.catalog-intro h1{font-size:clamp(2rem,4vw,3.25rem);font-weight:800;line-height:1.16;letter-spacing:-.04em;color:var(--navy);margin-bottom:17px;text-wrap:balance}
.catalog-intro-copy>p:not(.eyebrow){max-width:65ch;font-size:1.0625rem;line-height:1.8}
.catalog-brand{display:flex;flex-direction:column;align-items:center;gap:10px;padding:21px 25px;background:white;border:1px solid #c2e1ed;border-radius:18px;max-width:205px;box-shadow:0 7px 0 #cdebf3}
.catalog-brand img{width:145px;height:84px;object-fit:contain}
.catalog-brand span{font-size:.8125rem;font-weight:700;color:#204b70}
.catalog-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px 21px;margin-top:22px}
.catalog-count{display:inline-flex;align-items:center;border-radius:30px;background:var(--navy);color:white;padding:6px 13px;font-size:.875rem;font-weight:700}
.catalog-meta>p{font-size:.875rem;color:#345874}
.catalog-jump{background:white;padding:25px 0 29px;border-bottom:1px solid #e1edf2}
.catalog-jump-label{display:block;font-size:.8125rem;font-weight:700;color:#315571;margin-bottom:13px;letter-spacing:.04em;text-transform:uppercase}
.category-links{display:flex;flex-wrap:wrap;gap:10px}
.category-links a{display:inline-flex;align-items:center;gap:12px;font-size:.9375rem;font-weight:700;line-height:1.5;color:#164267;padding:9px 16px;min-height:43px;border:1px solid #c9deea;border-radius:24px;background:#f7fbfe;transition:background-color .2s ease,border-color .2s ease}
.category-links a:hover,.category-links a:focus-visible{background:#dff6f9;border-color:#79c8d3}
.category-links a>span{color:#597990;font-size:.8125rem;font-weight:500}
.catalog-body{padding-top:48px;padding-bottom:68px;background:linear-gradient(#fff,#f9fcfe)}
.catalog-section+.catalog-section{margin-top:70px;padding-top:55px;border-top:1px solid #dbe8f0}
.catalog-section-heading{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:26px}
.catalog-section-title{display:flex;align-items:start;gap:17px;min-width:0}
.catalog-section-index{display:grid;place-items:center;width:43px;height:43px;flex-shrink:0;background:#dcf5f8;color:#07576f;border-radius:12px;font-size:.9375rem;font-weight:700;margin-top:1px}
.catalog-section:nth-child(3n+2) .catalog-section-index{background:#fff3bb;color:#6c5410}
.catalog-section:nth-child(3n) .catalog-section-index{background:#e8f0ff;color:#254e8f}
.catalog-section-heading h3{font-size:clamp(1.5rem,2.5vw,2rem);line-height:1.28;letter-spacing:-.025em;margin-bottom:7px}
.catalog-section-heading p{font-size:1rem;line-height:1.75;max-width:60ch}
.source-link{font-size:.875rem;color:#376785;text-decoration:underline;text-underline-offset:4px;flex-shrink:0;padding-bottom:5px}
.source-link:hover{color:var(--navy)}
.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:23px}
.product-card{display:flex;flex-direction:column;background:white;border:1px solid #d3e3ec;border-radius:18px;overflow:hidden;box-shadow:0 6px 16px #02256e04;transition:transform .22s ease,box-shadow .22s ease}
.product-image{height:232px;padding:18px 24px 10px;display:flex;justify-content:center;align-items:center;background:white;position:relative}
.product-image::after{content:'';position:absolute;left:27px;right:27px;bottom:0;height:1px;background:#e9f1f6}
.product-image img{width:100%;height:100%;object-fit:contain;object-position:center}
.product-copy{padding:22px 25px 28px;flex:1}
.product-copy h4{font-size:1.1875rem;line-height:1.4;letter-spacing:-.02em;color:var(--navy);margin-bottom:12px;overflow-wrap:break-word}
.product-copy p{font-size:1rem;line-height:1.75;color:#37566f}
.catalog-help{padding:45px 0 58px;background:#f9fcfe}
.catalog-help .water-test-band{margin:0}
.catalog-help h2{font-size:1.6rem;line-height:1.35;margin-bottom:9px}
.catalog-footnote{font-size:.875rem;line-height:1.8;max-width:88ch;margin-top:24px;color:#45657c}
.catalog-footnote a{text-decoration:underline;text-underline-offset:3px}
@media(hover:hover) and (pointer:fine){.product-card:hover{transform:translateY(-4px);box-shadow:0 13px 25px #02256e0c}}
@media(max-width:1000px){.product-grid{gap:18px}.product-copy{padding:20px 21px 25px}.product-image{height:210px;padding:18px 19px 10px}.catalog-intro-grid{gap:24px}.catalog-brand{max-width:180px;padding:18px}.catalog-brand img{width:135px}.catalog-section-heading{align-items:start}.source-link{padding-top:10px}}
@media(max-width:850px){.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.product-image{height:235px}.catalog-section-heading{flex-direction:column;gap:12px}.source-link{margin-left:60px;padding:0}.catalog-intro-grid{grid-template-columns:1fr}.catalog-brand{display:none}.catalog-intro h1{font-size:2.5rem}}
@media(max-width:600px){
  .catalog-intro{padding:26px 0 31px}.breadcrumb{font-size:.8125rem;margin-bottom:23px}
  .catalog-intro h1{font-size:clamp(2rem,8vw,2.7rem)}.catalog-intro-copy>p:not(.eyebrow){font-size:1rem}
  .catalog-intro .eyebrow{font-size:.8125rem}.catalog-meta{gap:12px;margin-top:21px}.catalog-meta>p{font-size:.875rem}
  .catalog-jump{padding:22px 0 25px}.category-links{gap:9px}.category-links a{font-size:.875rem;padding:9px 13px;gap:9px}
  .catalog-body{padding-top:33px;padding-bottom:43px}.catalog-section+.catalog-section{margin-top:43px;padding-top:34px}
  .catalog-section-heading{margin-bottom:22px}.catalog-section-title{gap:13px}.catalog-section-index{width:37px;height:37px;border-radius:10px;font-size:.875rem}
  .catalog-section-heading h3{font-size:1.5rem}.catalog-section-heading p{font-size:1rem}.source-link{margin-left:50px}
  .product-grid{grid-template-columns:1fr;gap:19px}.product-card{border-radius:16px}
  .product-image{height:230px;padding:17px 29px 10px}.product-copy{padding:22px 25px 28px}
  .product-copy h4{font-size:1.25rem}.product-copy p{font-size:1.0625rem;line-height:1.75}
  .catalog-help{padding:10px 0 48px}.catalog-footnote{font-size:.8125rem}
}
@media(prefers-reduced-motion:reduce){.product-card:hover{transform:none}}

/* Sunlit tile colors frame the original BioGuard packaging. */
.catalog-intro{position:relative;background:radial-gradient(ellipse at 95% 12%,#a8e7ec 0,transparent 46%),radial-gradient(ellipse at 0 100%,#e0f6ff 0,transparent 56%),#effbff;border-bottom:1px solid #b6dfe9}
.catalog-intro .container{position:relative}
.catalog-intro::before{content:'';position:absolute;inset:0;pointer-events:none;background:repeating-radial-gradient(ellipse at 100% 100%,transparent 0 64px,#168cb511 65px 66px,transparent 67px 120px)}
.catalog-brand{transform:rotate(2deg);box-shadow:7px 8px 0 #ffffff70,0 12px 24px #12688310;border-color:#91ccd9}
.catalog-jump{background:#f9fdff}
.category-links a{background:white;box-shadow:0 3px 0 #e3f0f5}
.catalog-body{background:radial-gradient(ellipse 65% 600px at 0 0,#d9f3f8,transparent),radial-gradient(ellipse 65% 900px at 100% 45%,#e0f2ff,transparent),#f4f9fd}
.catalog-section-index{border:1px solid #bbdfe8;box-shadow:3px 3px 0 #fff;border-radius:13px}
.catalog-section-heading h3{color:#02256e}
.product-card{border-color:#c5deea;box-shadow:0 7px 20px #02256e08}
.product-image{margin:12px 12px 0;border-radius:12px;background:radial-gradient(ellipse at 50% 0,#ffffffc9 0,transparent 65%),linear-gradient(90deg,#ffffff75 1px,transparent 1px) 0 0/30px 30px,linear-gradient(#ffffff75 1px,transparent 1px) 0 0/30px 30px,#dff4f8;padding:18px 20px;overflow:hidden}
.product-image::after{left:20px;right:20px;bottom:12px;height:14px;border-radius:50%;background:#79b8cb1a}
.product-image img{position:relative;z-index:1;filter:drop-shadow(0 5px 4px #16456512)}
.catalog-section:nth-child(3n+2) .product-image{background-color:#e9f1ff}
.catalog-section:nth-child(3n) .product-image{background-color:#e5f6ef}
.product-copy{background:linear-gradient(170deg,#fff 65%,#f9fcff)}
.product-copy h4{position:relative;padding-top:13px}
.product-copy h4::before{content:'';position:absolute;top:0;left:0;width:34px;height:3px;border-radius:4px;background:#49bbd0}
.catalog-section:nth-child(3n+2) .product-copy h4::before{background:#e6c52a}
.catalog-section:nth-child(3n) .product-copy h4::before{background:#74bca6}
.catalog-help{background:linear-gradient(180deg,#f4f9fd,#e4f3fa)}
@media(max-width:600px){.product-image{margin:10px 10px 0;padding:17px 23px}.catalog-intro::before{opacity:.55}}

.catalog-brand-jump{margin-top:24px}
.catalog-brand-jump a{gap:13px}
.catalog-brand-jump a>span:last-child{margin-left:10px;color:#08728c;font-weight:700}
.catalog-brand-jump a{border-radius:8px}
.catalog-help{scroll-margin-top:16px}
.product-image:focus-visible{outline-offset:-3px;outline-width:3px}
.catalog-search-grid input:focus,.catalog-search-grid select:focus{border-color:#177fab;outline:2px solid #a9deee;outline-offset:2px}
@media(max-width:700px){.catalog-brand-jump a{flex:1 1 160px;position:relative;gap:3px;padding-right:34px}.catalog-brand-jump a>span:last-child{position:absolute;right:13px;top:15px;margin:0}.catalog-brand-jump a:last-child{flex-basis:100%}}
.catalog-collection{scroll-margin-top:16px}
.catalog-collection+.catalog-collection{margin-top:70px;padding-top:48px;border-top:3px solid #72c7d7}
.catalog-collection-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:25px}
.catalog-collection-heading h2{font-size:clamp(1.8rem,3vw,2.4rem);line-height:1.25;letter-spacing:-.03em;margin-bottom:12px}
.catalog-collection-heading .eyebrow{font-size:.875rem;margin-bottom:10px}
.catalog-collection-heading>div>p:last-child{font-size:.9375rem;line-height:1.7;color:#3a5e76}
.catalog-stock-note{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:32px;padding:25px 28px;border:1px solid #bfdbe6;border-radius:10px;background:#fff}
.catalog-stock-note>div{min-width:0}.catalog-stock-note .mini-label{font-size:.875rem;color:#12667c;line-height:1.5}.catalog-stock-note p+p{font-size:1rem;line-height:1.7;color:#365269;margin-top:7px}.catalog-stock-note .button{flex-shrink:0;font-size:1rem}
@media(max-width:700px){.catalog-stock-note{align-items:stretch;flex-direction:column;padding:22px;gap:18px}.catalog-stock-note .button{justify-content:center}}
.catalog-collection-heading .catalog-brand{transform:none;box-shadow:none;padding:16px 22px}
.catalog-category-jump{margin-bottom:35px}
@media(max-width:700px){.catalog-collection+.catalog-collection{margin-top:47px;padding-top:34px}.catalog-collection-heading{margin-bottom:22px}.catalog-category-jump{margin-bottom:28px}.catalog-collection{scroll-margin-top:16px}}

/* Instant product search and filters. */
.catalog-search-tools{margin-top:29px;padding:23px 25px 18px;background:#fff;border:1px solid #b6d7e4;border-radius:8px;box-shadow:0 6px 18px #02256e06}
.catalog-search-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1.1fr) auto;gap:17px;align-items:end}
.catalog-search-grid>div{min-width:0}
.catalog-search-grid label{display:block;font-size:.875rem;font-weight:700;color:var(--navy);margin-bottom:7px}
.catalog-search-grid input,.catalog-search-grid select{width:100%;min-width:0;min-height:48px;padding:11px 12px;border:1px solid #b9d1df;border-radius:5px;background:#f8fcfe;color:#193c57;font-size:1rem;line-height:1.5}
.catalog-reset{padding:12px 13px;min-height:48px;font-size:.875rem;font-weight:700;border:1px solid #c4d9e5;background:#edf6fa;color:var(--navy);border-radius:5px}
.catalog-reset:disabled{opacity:.55;cursor:default}
.catalog-result-count{font-size:.9375rem;margin-top:15px;color:#365b73}
.catalog-empty{padding:36px;max-width:740px;margin:0 auto;background:#fff;border:1px solid #c7dce8;border-radius:8px;text-align:center}
.catalog-empty h2{font-size:1.8rem}.catalog-empty p{font-size:1rem;line-height:1.8;margin:16px 0 22px}
.product-card{border-radius:9px}.product-image{border-radius:6px}.product-copy{padding:23px 25px 28px}.product-copy h4{margin:0 0 12px}.catalog-brand{border-radius:8px}
.catalog-collection.first-visible-collection{margin-top:0;padding-top:0;border-top:0}
@media(max-width:1000px){.catalog-search-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-search-field{grid-column:1/-1}.catalog-reset{grid-column:1/-1;justify-self:start}.catalog-search-tools{padding:21px}}
@media(max-width:600px){.catalog-search-tools{margin-top:23px;padding:19px}.catalog-search-grid{grid-template-columns:1fr;gap:14px}.catalog-search-grid>*{grid-column:1}.catalog-reset{justify-self:stretch}.catalog-empty{padding:27px 22px}}