/* Visual refinement of the supplied frontend-design.css.
   Brand palette and approved copy are intentionally retained. */
:root{--water-surface:#edf3f1;--water-line:#d2dfdc;--brand-mist:#f4efff;--surface-shadow:0 18px 54px #37245b08}
body{background:#fbfcfc;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
::selection{background:#e3d7ff;color:var(--dark)}
.utility-bar{font-size:11px;letter-spacing:.015em;padding-top:8px;padding-bottom:8px}
.site-header{background:#fff;border-color:#e9eeec;box-shadow:0 6px 24px #37245b03}
.header-inner{padding-top:22px;padding-bottom:22px;background:#fff}
.site-header nav{gap:24px}.site-header nav>a:not(.nav-contact){text-underline-offset:7px}
.site-header nav>a:not(.nav-contact):hover{text-decoration:underline;text-decoration-thickness:1px}
.nav-contact{border-color:#d9cee9;background:#fff}
.dropdown-panel{padding:10px;background:#fff;border-color:#e5e2ed;box-shadow:0 20px 60px #37245b12;border-radius:14px}
.dropdown-panel a{transition:background .2s}.dropdown-panel a:hover{background:var(--brand-mist)}
.button{min-height:50px;border-radius:8px;transition:transform .2s,background .2s,box-shadow .2s;letter-spacing:.005em}
.button:not(.secondary):not(.amazon-button){box-shadow:0 5px 15px #7149ed14}
.button:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 9px 24px #7149ed20}
.button.secondary{border-color:#cabfde;background:#ffffff80}
.model-chip{border-color:#d8cdec;background:#ffffffb5;letter-spacing:.04em;font-size:12px}
.eyebrow,.section-kicker{letter-spacing:.035em}
.hero{position:relative;isolation:isolate;background:radial-gradient(ellipse at 78% 20%,#ffffffc9 0,transparent 48%),linear-gradient(125deg,#edf3f1 10%,#e4eeeb 72%,#ece7f8);min-height:660px;border-radius:0 0 32px 32px;border:1px solid #e2eae7;border-top:0;padding-top:68px;padding-bottom:58px}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:url("assets/water-contours.svg") center/cover no-repeat;pointer-events:none}
.hero-context{display:inline-block;padding:0 0 0 13px;border-left:2px solid var(--purple);font-size:13px;letter-spacing:.025em}
.hero h1{font-weight:600;letter-spacing:-.055em;line-height:1.02}
.hero .lead{color:#52615e}.hero-note{letter-spacing:.035em}
.product-orbit{width:80%;top:5%;left:9%;border-color:#c0d2cd;background:radial-gradient(ellipse at 35% 25%,#ffffffed,transparent 65%);box-shadow:0 0 0 26px #ffffff20,0 0 0 27px #c0d2cd4d,0 0 0 54px #ffffff12}
.hero-art>img{filter:drop-shadow(0 22px 22px #37245b0d)}
.hero-product-label{background:#ffffff94;border:1px solid #ffffffd9;border-radius:12px;padding:17px 19px;backdrop-filter:blur(8px);bottom:0;left:8%;right:0;box-shadow:0 8px 28px #37245b05}
.hero-product-label strong{font-size:23px}.hero-product-label svg{color:var(--purple)}
.home-collection{padding-top:100px}.section-heading h2{font-weight:500}
.product-grid{gap:42px 30px}
.product-image,.handheld-card .product-image,.overhead-card .product-image,.faucet-card .product-image{position:relative;overflow:hidden;border:1px solid #dde6e2;border-radius:20px;background:radial-gradient(ellipse at 50% 28%,#fff 0,#edf3f1 67%,#e5eeeb 100%);box-shadow:inset 0 1px 0 #fff;transition:border-color .25s,box-shadow .25s}
.overhead-card .product-image{background:radial-gradient(ellipse at 50% 28%,#fff 0,#f0ecf7 75%,#e9e3f3 100%)}
.faucet-card .product-image{background:radial-gradient(ellipse at 50% 28%,#fff 0,#e9f0f1 75%,#e1e9eb 100%)}
.product-image::before{content:"";position:absolute;inset:14px;border:1px solid #ffffffb3;border-radius:14px;pointer-events:none}
.product-image img{transition:transform .45s cubic-bezier(.2,.7,.3,1);position:relative}
.product-card:hover .product-image{border-color:#c0addf;box-shadow:var(--surface-shadow)}
.product-card:hover .product-image img{transform:scale(1.035)}
.card-label{padding-top:25px}.card-label h3{font-size:23px;line-height:1.18;letter-spacing:-.025em}
.card-action{padding-top:16px;border-color:#e1e7e4}.card-action svg{transition:transform .2s}
.product-card:hover .card-action svg{transform:translateX(4px)}
.inline-stage{position:relative;overflow:hidden;border:1px solid #d6e3de;border-radius:32px;background:radial-gradient(ellipse at 35% 20%,#fff,#e2eeea 68%);box-shadow:inset 0 0 0 14px #ffffff30}
.inline-stage::before{content:"";position:absolute;width:74%;aspect-ratio:1;border:1px solid #bdcec7;border-radius:50%;box-shadow:0 0 0 25px #ffffff3d,0 0 0 26px #bdcec747;pointer-events:none}
.inline-stage img{position:relative;filter:drop-shadow(0 16px 18px #37245b0d)}
.inline-facts>div{padding:15px 0}.inline-facts dt{font-size:13px}
.replacement-section{background:#fff;border-block:1px solid #e7edeb;padding-block:82px}
.cartridge-map a{background:#fff;border:1px solid #e5e8e9;border-radius:14px;padding:18px;transition:box-shadow .25s,border-color .25s,transform .25s}
.cartridge-map a:hover{background:#fff;border-color:#c4b0e6;box-shadow:0 12px 32px #37245b08;transform:translateY(-3px)}
.cartridge-thumb{background:radial-gradient(ellipse at center,#fff 45%,#f1f5f3);border-radius:10px;border:1px solid #f1f3f2}
.cartridge-map .cartridge-title{line-height:1.4}.cartridge-map strong{letter-spacing:-.025em}
.breadcrumbs{font-size:12px;letter-spacing:.015em}.breadcrumbs span[aria-hidden]{color:#b5bdb9}
.product-hero{padding-top:44px;padding-bottom:90px}
.detail-image,.cartridge-photo{position:relative;isolation:isolate;overflow:hidden;border:1px solid #dce6e2;border-radius:24px;background:radial-gradient(ellipse at 40% 20%,#fff 0,#edf3f1 62%,#e2ece8 100%);box-shadow:inset 0 0 0 12px #ffffff30}
.detail-image::before{content:"";position:absolute;width:78%;aspect-ratio:1;left:11%;top:13%;border:1px solid #cadbd4;border-radius:50%;box-shadow:0 0 0 28px #ffffff30,0 0 0 29px #cadbd447;z-index:-1;pointer-events:none}
.detail-image img{filter:drop-shadow(0 20px 24px #37245b0b)}
.cartridge-photo{background:radial-gradient(ellipse at 50% 36%,#fff 55%,#edf3f1 100%)}
.detail-copy .eyebrow{padding-left:12px;border-left:2px solid var(--purple)}
.detail-copy h1{letter-spacing:-.045em}.detail-copy .model{font-weight:500}
.specs{border-top:1px solid #dfe6e2}.specs>div{padding:16px 0;border-color:#e3e9e6}
.specs>div:nth-child(even){background:#edf3f13d}.specs dt{font-size:13px}.specs dd{font-weight:500}
.purchase-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:0 0 32px}
.purchase-actions>.button{margin:0}
.button.amazon-button{background:#fff;color:var(--dark);border:1px solid #c4b3df;box-shadow:none;gap:10px;opacity:1;cursor:not-allowed;white-space:nowrap}
.amazon-button svg{width:18px;height:18px;color:var(--purple)}
.amazon-button .amazon-external{font-size:17px;color:var(--purple);margin-left:4px}
.complete-guide,.illustrated-replacement{border-top:1px solid #e3eae7}
.guide-figure{border-color:#e0e7e3;border-radius:16px;box-shadow:0 8px 30px #37245b03;padding:20px}
.guide-figure figcaption{font-size:12px;letter-spacing:.01em}
.guide-body h3{font-size:23px}.guide-index-card{background:#f0f5f2;border:1px solid #e0e8e3;border-radius:14px;transition:background .2s,border-color .2s}
.guide-index-card:hover{border-color:#c6b4df;background:#f6f2fc}
.shower-flush .guide{border-radius:16px;border:1px solid #dbe7e1;background:linear-gradient(115deg,#edf3f1,#f3f7f4);box-shadow:none}
.page-intro{position:relative}.page-intro .eyebrow{color:var(--purple)}
.story-intro{background:radial-gradient(ellipse at 85% 18%,#e7f0ec99,transparent 53%)}
.brand-story>img{border:1px solid #edf0ed;box-shadow:var(--surface-shadow)}
.story-science-grid article{border-color:#dce6e0;border-radius:14px;box-shadow:0 7px 24px #37245b03}
.story-number{font-weight:400}.story-process{border:1px solid #e4dcef;background:linear-gradient(115deg,#f4efff,#edf3f1)}
.story-table-scroll{border-color:#dce6e0;box-shadow:0 8px 25px #37245b03}.story-table thead th{background:#f2eef9}
.story-table tbody tr:nth-child(even){background:#f6f9f7}.story-table td{line-height:1.8}
.story-statement{position:relative;isolation:isolate;overflow:hidden;background:linear-gradient(115deg,#f4efff,#edf3f1)}
.story-statement::before{content:"";position:absolute;inset:0;background:url("assets/water-contours.svg") center/cover no-repeat;opacity:.7;z-index:-1;pointer-events:none}
.story-principles article{border-top:2px solid #d8c7f3}.story-sources{border-top:1px solid #e7edeb}
.faq-category-nav a{border-radius:8px;border-color:#ded5e9;transition:background .2s,color .2s}
.faq-category-heading{padding-left:20px;border-left:2px solid #b499e6}.faq-category-heading h2{font-weight:500}
.faq-hub .faq-group-grid details{border-color:#e0e7e3}.faq-hub .faq-group-grid details[open]{background:linear-gradient(120deg,#f5f1fc70,#f0f6f370)}
.faq-hub .faq-group-grid summary{padding-block:2px}.faq-hub .faq summary::after{font-weight:400}
.faq-hub .faq-answer{padding-top:2px;padding-bottom:12px}
.cta{border-top:1px solid #e6ece8}.cta h2{letter-spacing:-.04em}
.water-use-notice{background:#f4efff;border-top-color:#e5dcf4}
footer{position:relative;isolation:isolate;overflow:hidden;background:#7149ed}
footer::before{content:"";position:absolute;inset:0;background:url("assets/water-contours.svg") center 55%/cover no-repeat;opacity:.12;z-index:-1;pointer-events:none}
.footer-top{padding-top:72px;padding-bottom:72px}.footer-brand{font-size:38px}.footer-brand span{letter-spacing:.1em;font-size:11px}
.footer-top>div>a:not(.footer-brand){font-size:14px;margin:12px 0}.footer-top>div>a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{border-top-color:#ffffff30}
.form-panel{border:1px solid #e0e7e3;border-radius:18px;background:#fff;box-shadow:var(--surface-shadow)}
.field input,.field select,.field textarea{border-radius:7px;border-color:#d8e2dc}
@media(min-width:1441px){.hero{margin-top:24px;border-radius:26px;border-top:1px solid #e2eae7}}
@media(max-width:1200px) and (min-width:1081px){.site-header nav{gap:15px}.purchase-actions{gap:10px}.purchase-actions .button{padding:13px 18px;font-size:13px}}
@media(max-width:1080px){.site-header nav{gap:0}.header-inner{padding-block:18px}.hero{min-height:580px}.hero-product-label{left:2%;padding:14px}.hero-product-label>span{gap:3px}.product-grid{gap:34px 24px}.product-hero{padding-top:32px;padding-bottom:65px}.purchase-actions .button{padding:13px 17px;font-size:13px}.guide-figure{padding:14px}.detail-image{border-radius:20px}}
@media(max-width:700px){.hero{border-radius:0 0 22px 22px;padding-top:38px;padding-bottom:26px;min-height:0}.hero-context{font-size:11px}.hero-art{padding-bottom:76px}.hero-product-label{left:0;right:0;bottom:0;padding:13px}.hero-product-label>span{flex-direction:row;align-items:center;gap:12px}.hero-product-label span span{font-size:11px}.product-orbit{box-shadow:0 0 0 18px #ffffff20,0 0 0 19px #c0d2cd4d}.product-grid{gap:28px 16px}.card-label h3{font-size:18px}.product-image::before{inset:9px;border-radius:10px}.inline-stage{border-radius:22px}.replacement-section{padding-block:55px}.cartridge-map a{padding:12px}.cartridge-map .cartridge-title{font-size:14px}.detail-image{border-radius:18px}.detail-copy .eyebrow{padding-left:10px}.purchase-actions{gap:10px;margin-bottom:26px}.purchase-actions .button{min-height:47px;font-size:12px;padding:12px 16px}.specs>div{padding:13px 0}.guide-body h3{font-size:21px}.guide-figure{padding:12px}.faq-category-heading{padding-left:14px}.faq-category-nav a{border-radius:7px}.footer-top{padding-top:48px;padding-bottom:48px}.footer-top>div>a:not(.footer-brand){font-size:12px}.footer-brand{font-size:34px}.home-collection{padding-top:60px}}
@media(prefers-reduced-motion:reduce){.button,.product-image,.product-image img,.card-action svg,.cartridge-map a{transition:none}.button:not(:disabled):hover,.product-card:hover .product-image img,.cartridge-map a:hover,.product-card:hover .card-action svg{transform:none}}

.button.amazon-button:disabled:hover{background:#fff;color:var(--dark);border-color:#c4b3df;box-shadow:none;transform:none}
a.button.amazon-button{cursor:pointer}

/* Two type families: Jost for the interface and body; existing display art retained. */
body{font-synthesis:none}
.site-header nav,.site-header .menu-toggle,.dropdown-panel,.nav-contact{font-family:var(--body)}
.site-header nav{font-weight:500;letter-spacing:.018em}
.site-header .nav-contact{font-weight:500;letter-spacing:.025em}
.product-dropdown summary>span{font-weight:400;letter-spacing:0}
.dropdown-panel strong,.model-chip,.hero-product-label strong{font-family:var(--body);font-weight:500}
.dropdown-panel span{font-family:var(--body);font-size:13px;letter-spacing:.01em}
.button,.faq-category-nav,.faq-number,.eyebrow,.section-kicker{font-family:var(--body)}
.button{font-weight:500;letter-spacing:.025em}
.model-chip{letter-spacing:.045em}
.specs,.inline-facts,.story-table{font-variant-numeric:lining-nums tabular-nums}
@media(min-width:1201px){.site-header nav{font-size:19px;gap:24px}}
@media(min-width:1081px) and (max-width:1200px){.site-header nav{font-size:18px;gap:15px}}
@media(max-width:1080px){.site-header nav{font-size:18px;letter-spacing:.015em}}

/* Slightly larger Jost text, retaining the existing display-heading sizes. */
body{font-size:17px}
.brand-story p,.story-principles p:not(.eyebrow),.story-science-grid p,.section-heading>p,.care-copy p,.guide p,.guide-body>p,.care-steps li{font-size:16px}
.card-label p{font-size:15px}.card-action,.text-link{font-size:15px}
.button{font-size:15px}.eyebrow,.section-kicker{font-size:15px}
.specs dt,.specs dd,.inline-facts dt,.inline-facts dd{font-size:14px}
.story-note,.guide-figure figcaption,.story-sources li,.story-sources li p{font-size:14px}
.faq-hub .faq-answer{font-size:15px}.story-table{font-size:15px}
.footer-top>div>a:not(.footer-brand){font-size:15px}
@media(min-width:1201px){.site-header nav{font-size:20px}}
@media(min-width:1081px) and (max-width:1200px){.site-header nav{font-size:19px;gap:13px}}
@media(min-width:1081px){.faq-hub .faq-group-grid summary{font-size:17px}}
@media(max-width:1080px){.site-header nav{font-size:19px}}
@media(max-width:700px){body{font-size:16px}.brand-story p,.story-principles p:not(.eyebrow),.story-science-grid p,.section-heading>p,.care-copy p,.guide p,.guide-body>p,.care-steps li{font-size:15px}.card-label p{font-size:13px}.card-action{font-size:13px}.button,.purchase-actions .button{font-size:13px}.eyebrow,.section-kicker{font-size:13px}.specs dt,.specs dd{font-size:13px}.story-note,.guide-figure figcaption,.story-sources li p{font-size:13px}.footer-top>div>a:not(.footer-brand){font-size:13px}}

/* Live Amazon product links keep the outlined purchase treatment on hover. */
a.button.amazon-button:hover{background:#f4efff;color:var(--dark);border-color:var(--purple)}

/* Responsive layout: size content to its column, not to a fixed desktop line. */
:root{--page-gutter:clamp(20px,4.45vw,64px)}
.wrap,.header-inner,.footer-top,.footer-bottom{padding-inline:var(--page-gutter)}
.utility-bar{padding-inline:max(var(--page-gutter),calc((100% - 1312px)/2))}
.hero,.product-hero,.inline-feature,.contact-layout,.care-section,.instruction-grid,
.brand-story,.replacement-inner,.selection-grid,.support-guides,.instruction-cards{
  grid-template-columns:repeat(2,minmax(0,1fr));
}
.hero>*,.product-hero>*,.inline-feature>*,.contact-layout>*,.care-section>*,
.instruction-grid>*,.brand-story>*,.replacement-inner>*,.selection-grid>*,
.footer-top>*,.section-heading>*,.cta>*{min-width:0}
.selection-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.hero{gap:clamp(24px,3vw,44px);padding-block:clamp(40px,4.5vw,64px);min-height:0}
.hero h1{font-size:clamp(56px,6.8vw,98px);line-height:1.04}
.hero-art{min-height:clamp(360px,36vw,510px);padding-bottom:80px}
.hero-art>img{width:100%;max-width:100%;margin:0;object-fit:contain}
.hero-product-label{left:0;right:0;gap:16px}
.hero-product-label>span{min-width:0;flex-wrap:wrap;gap:4px 16px}
.hero-product-label span span{overflow-wrap:normal}
.product-hero,.inline-feature,.contact-layout,.brand-story,.care-section{
  gap:clamp(28px,4vw,64px);
}
.detail-image{height:auto;aspect-ratio:1;max-height:640px;padding:clamp(24px,3.5vw,48px)}
.detail-image img{min-height:0}
.detail-copy h1{font-size:clamp(38px,3.65vw,56px);overflow-wrap:normal}
.section-heading{gap:clamp(24px,4vw,56px);flex-wrap:wrap}
.section-heading h2{max-width:100%;font-size:clamp(30px,3.5vw,48px)}
.section-heading>p{flex:0 1 410px}
.illustrated-replacement .section-heading>div{flex:1 1 100%}
.home-hero-lead>span,.inline-product-lead>span,.handheld-hero-lead>span,
.overhead-hero-lead>span,#guide-hh901 .hh901-kit-summary,
[id^="replace-"] .section-heading h2,.brand-story .story-core-heading,
.story-closing-copy>span,.faq-group-grid .faq-question,.service-record-details,
.water-use-notice p,.cta p,.shower-flush .guide p{white-space:normal}
.detail-copy .lead{max-width:100%}
.cta,.support-cta{display:flex;align-items:center;gap:clamp(24px,4vw,56px)}
.cta>div{flex:1}.cta p{max-width:100%}
.brand-story .story-core-heading{font-size:clamp(32px,3.1vw,46px)}
.faq-group-grid{gap:0 clamp(24px,4vw,56px)}
.faq-hub .faq-group-grid summary{font-size:17px;gap:10px;align-items:baseline;line-height:1.5}
.faq-question{flex:1}.faq-number{flex-basis:26px}
.faq-answer,.guide-body,.story-process,.story-table-scroll{min-width:0;max-width:100%}
.story-table-scroll{overscroll-behavior-x:contain}
.guide-body>p,.service-warranty .guide-body>p{max-width:100%}
.specs>div,.inline-facts>div{gap:16px;align-items:baseline}
.specs dt,.inline-facts dt{flex:1;min-width:0}
.specs dd,.inline-facts dd{flex:1.35;min-width:0;text-align:right;overflow-wrap:normal}
.specs dd{max-width:65%}
.purchase-actions{gap:12px;align-items:stretch}
.purchase-actions .button{white-space:normal;max-width:100%;min-height:48px}
.faucet-model-tabs{flex-wrap:wrap}
.form-panel{min-width:0}.field input,.field select,.field textarea{font-size:16px}
.footer-top{grid-template-columns:minmax(0,1.6fr) repeat(2,minmax(0,1fr));gap:clamp(24px,4vw,60px)}
.footer-top a{overflow-wrap:anywhere}
.site-header nav{gap:clamp(14px,1.55vw,24px);font-size:clamp(17px,1.3vw,20px);white-space:nowrap}
.site-header nav>a,.product-dropdown summary{min-height:44px;align-content:center}
.dropdown-panel{max-width:calc(100vw - 2 * var(--page-gutter))}
.dropdown-panel span{white-space:normal}

/* Laptop and tablet navigation collapses before the links can collide. */
@media(max-width:1180px){
  html{scroll-padding-top:100px}
  .header-inner{flex-wrap:wrap;gap:0 20px;padding-block:16px}
  .brand{width:153px}
  .menu-toggle{display:flex;align-items:center;gap:14px;min-height:44px;padding:9px 16px;border:1px solid #c5bed1;border-radius:24px;background:#fff;color:var(--dark);font-size:15px}
  .site-header nav{display:none;width:100%;flex-direction:column;align-items:stretch;gap:0;font-size:18px;white-space:normal;padding-top:14px}
  .site-header nav.open{display:flex}
  .site-header:has(nav.open){max-height:calc(100dvh - 12px);overflow-y:auto;overscroll-behavior:contain}
  .product-dropdown summary,.site-header nav>a{padding:14px 0;border:0;border-top:1px solid var(--line);justify-content:space-between;border-radius:0}
  .dropdown-panel{position:static;min-width:0;max-width:100%;margin:0 0 12px;box-shadow:none;border:0;background:var(--brand-mist)}
  .dropdown-panel a{min-height:60px}
  .hero-product-label>span{flex-direction:row;align-items:baseline}
  .home-collection .product-image,.collection .product-image{height:clamp(260px,31vw,360px);padding:28px}
  .replacement-inner{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:32px}
  .cartridge-map{gap:16px}
  .story-science-grid{gap:18px}
  .story-science-grid article{padding:22px}
}

/* Portrait tablets and small landscape screens use one readable main column. */
@media(max-width:900px){
  .hero,.product-hero,.inline-feature,.contact-layout,.brand-story,.care-section,
  .replacement-inner,.instruction-grid{grid-template-columns:minmax(0,1fr)}
  .hero{gap:24px;padding-block:40px}
  .hero-copy{max-width:640px}
  .hero h1{font-size:clamp(52px,8vw,72px)}
  .hero-art{width:100%;max-width:620px;justify-self:center;min-height:0;padding-bottom:82px}
  .hero-art>img{max-height:420px;width:100%}
  .hero-product-label{bottom:0}
  .hero-note{margin-top:24px}
  .product-hero{gap:32px;padding-block:32px 64px}
  .detail-image{width:100%;max-width:620px;justify-self:center;max-height:520px;aspect-ratio:6/5}
  .detail-copy{width:100%;max-width:680px;justify-self:center}
  .detail-copy h1{font-size:clamp(36px,5.5vw,48px)}
  .faucet-selector .detail-image{position:static}
  .inline-stage{min-height:0;padding:32px}
  .inline-stage img{height:340px}
  .inline-copy,.brand-story>div{max-width:680px}
  .brand-story>img{max-height:520px}
  .replacement-copy p{max-width:60ch}
  .cartridge-thumb{height:240px}
  .cartridge-map .cartridge-title{min-height:0}
  .instruction-grid{gap:20px;align-items:start}
  .guide-figure{width:100%;max-width:620px;justify-self:center;margin:0 0 12px}
  .guide-figure img{max-height:520px}
  .faq-group-grid{grid-template-columns:minmax(0,1fr)}
  .story-science-grid,.story-principles{grid-template-columns:minmax(0,1fr)}
  .story-process-track{grid-template-columns:minmax(0,1fr);gap:12px}
  .process-arrow{text-align:center;transform:rotate(90deg);line-height:1}
  .story-sources ol{grid-template-columns:minmax(0,1fr)}
  .cta,.support-cta{align-items:flex-start;flex-direction:column;gap:24px}
  .cta>div{width:100%}
  .section{padding-block:clamp(56px,8vw,80px)}
  .section-heading>p{flex-basis:auto}
  .form-panel{max-width:680px;width:100%}
}

/* Phones: comfortable type, touch targets, and no forced desktop line lengths. */
@media(max-width:600px){
  html{scroll-padding-top:90px}
  .utility-bar{padding-block:7px;font-size:10px}
  .utility-bar>a{display:none}
  .header-inner{padding-block:14px}
  .brand{width:145px}
  .hero{padding-block:32px 24px;gap:16px;border-radius:0 0 20px 20px}
  .hero h1{font-size:clamp(43px,12.1vw,68px)}
  .hero-context{margin-bottom:22px}
  .hero .lead{font-size:16px;line-height:1.65;margin-block:22px 26px}
  .hero .button{font-size:13px;min-height:46px;padding:12px 16px}
  .hero-art{padding-bottom:78px;margin-top:8px;min-height:0}
  .hero-art>img{max-height:320px}
  .hero-product-label{padding:13px;gap:8px}
  .hero-product-label>span{gap:2px 12px}
  .hero-product-label strong{font-size:21px}
  .hero-product-label span span{font-size:12px}
  .hero-product-label svg{width:20px}
  .page-intro{padding-block:40px}
  .page-intro h1{font-size:clamp(38px,9.5vw,52px)}
  h2,.section-heading h2,.inline-copy h2,.replacement-copy h2,.cta h2{font-size:clamp(30px,7.8vw,40px)}
  .product-grid,.product-grid.related{grid-template-columns:minmax(0,1fr);gap:32px}
  .home-collection .product-image,.collection .product-image,.related .product-image{height:auto;aspect-ratio:6/5;max-height:400px;padding:28px}
  .home-collection .faucet-card .product-image,.collection .faucet-card .product-image{padding:22px 14px}
  .card-label h3,.related h3{font-size:22px;min-height:0;line-height:1.25}
  .card-label p{font-size:15px;min-height:0}
  .card-action{font-size:14px}
  .faucet-pair figcaption{font-size:12px}
  .cartridge-map{gap:24px 14px}
  .cartridge-map a{padding:12px;gap:8px}
  .cartridge-thumb{height:180px}
  .cartridge-map strong{font-size:26px}
  .cartridge-map .cartridge-title{font-size:14px;line-height:1.4;min-height:0}
  .cartridge-map .cartridge-action{font-size:13px}
  .detail-copy h1{font-size:clamp(34px,8vw,44px);line-height:1.12}
  .detail-copy .lead{font-size:16px;line-height:1.7}
  .detail-image{max-height:420px;aspect-ratio:1;padding:24px}
  .purchase-actions .button{flex:1 1 180px;font-size:14px}
  .detail-copy>.button{max-width:100%;white-space:normal}
  .specs>div{gap:12px}.specs dt,.specs dd{font-size:14px}
  .inline-stage img{height:280px}
  .section-heading{flex-direction:column;align-items:flex-start;gap:20px;margin-bottom:28px}
  .selection-grid,.support-guides,.instruction-cards,.filtration-list{grid-template-columns:minmax(0,1fr)}
  .guide{padding:24px}
  .guide-body h3,.guide h3{font-size:23px;line-height:1.2}
  .guide p,.guide-body>p,.care-steps li{font-size:16px;line-height:1.7}
  .mode-list{grid-template-columns:minmax(0,1fr)}
  .faq-hub .faq-group-grid summary{font-size:17px;gap:8px;padding-right:28px}
  .faq-group-grid .faq-answer{padding-left:0;font-size:16px}
  .faq-category-nav{gap:8px}.faq-category-nav a{font-size:13px;min-height:44px;display:flex;align-items:center}
  .story-statement h2{font-size:clamp(32px,7.7vw,46px);line-height:1.12}
  .story-closing-copy br{display:none}
  .story-closing-copy>span+span::before{content:" "}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr));padding-block:48px;gap:28px 20px}
  .footer-top>div:first-child{grid-column:1/-1}
  .footer-top>div>a:not(.footer-brand){font-size:15px;min-height:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .water-use-notice p,.water-use-notice strong{font-size:13px;line-height:1.75}
}
@media(max-width:380px){
  .cartridge-map{grid-template-columns:minmax(0,1fr)}
  .cartridge-thumb{height:240px}
  .hero .actions>.button{flex:1 1 100%}
  .faucet-model-tabs{gap:8px}.faucet-model-tabs button{flex:1;padding:11px 16px}
}