:root{--ink:#17212b;--muted:#5d6b78;--brand:#0f5961;--accent:#1e8b8f;--soft:#eef7f6;--panel:#f7faf9;--line:#dce6e5;--warm:#fbf7ef;--white:#fff;--shadow:0 8px 24px rgba(15,89,97,.08)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.65;font-size:17px}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.header-inner{max-width:1180px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:14px 22px}.logo{font-weight:850;font-size:25px;letter-spacing:-.5px;color:var(--ink);display:flex;align-items:center;gap:8px}.logo-mark{width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--accent));display:inline-block;position:relative}.logo-mark:after{content:"";position:absolute;width:10px;height:15px;background:#fff;border-radius:9px 9px 9px 2px;left:9px;top:6px;transform:rotate(25deg);opacity:.9}.nav{display:flex;gap:18px;align-items:center}.nav a{font-size:15px;font-weight:650;color:var(--ink)}.cta{background:var(--brand)!important;color:#fff!important;padding:9px 14px;border-radius:999px;text-decoration:none!important}.menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 10px}.hero{background:linear-gradient(180deg,var(--soft),#fff);border-bottom:1px solid var(--line)}.hero-inner{max-width:1180px;margin:auto;padding:70px 22px 54px;display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center}.eyebrow{font-weight:800;color:var(--brand);text-transform:uppercase;letter-spacing:.08em;font-size:13px}h1{font-size:48px;line-height:1.05;margin:12px 0 18px;letter-spacing:-1.6px}h2{font-size:32px;line-height:1.18;margin:48px 0 14px;letter-spacing:-.6px}h3{font-size:22px;margin:28px 0 8px}.lead{font-size:21px;color:#354550;max-width:760px}.hero-card,.callout,.quick-box{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:22px;padding:24px}.hero-card ul,.quick-box ul{padding-left:20px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-block;padding:12px 18px;border-radius:12px;background:var(--brand);color:#fff;font-weight:750;text-decoration:none}.btn.alt{background:#fff;color:var(--brand);border:1px solid var(--line)}main{max-width:1120px;margin:auto;padding:26px 22px 60px}.article{max-width:850px}.content-grid{display:grid;grid-template-columns:minmax(0,820px) 280px;gap:44px;align-items:start}.toc{position:sticky;top:80px;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:18px;font-size:15px}.toc strong{display:block;margin-bottom:8px}.toc a{display:block;padding:5px 0;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:22px 0}.card{border:1px solid var(--line);border-radius:18px;padding:20px;background:#fff;box-shadow:var(--shadow)}.card h3{margin-top:0}.card p{color:var(--muted);font-size:15.5px}.pill{display:inline-block;background:var(--soft);border:1px solid var(--line);color:var(--brand);padding:5px 10px;border-radius:999px;font-weight:750;font-size:13px}.table-wrap{overflow-x:auto;margin:20px 0;border:1px solid var(--line);border-radius:16px}table{border-collapse:collapse;width:100%;background:#fff}th,td{border-bottom:1px solid var(--line);padding:14px;text-align:left;vertical-align:top}th{background:var(--soft);font-weight:800}tr:last-child td{border-bottom:0}.callout{margin:24px 0}.callout h3{margin-top:0}.callout.owner{background:var(--warm)}.callout.safety{background:#fff8f6}.note{font-size:14px;color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px 14px}.related{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.related a{border:1px solid var(--line);border-radius:999px;padding:8px 12px;background:#fff}.faq details{border:1px solid var(--line);border-radius:14px;margin:10px 0;padding:14px;background:#fff}.faq summary{font-weight:800;cursor:pointer}.site-footer{background:#10242b;color:#e8f5f4;margin-top:50px}.footer-inner{max-width:1180px;margin:auto;padding:44px 22px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:28px}.site-footer a{color:#d8fffb}.site-footer h3{margin-top:0;color:#fff}.footer-small{font-size:14px;color:#b7c9c8;border-top:1px solid rgba(255,255,255,.15);padding-top:22px;margin-top:28px}.breadcrumbs{font-size:14px;color:var(--muted);margin-bottom:14px}.disclosure{font-size:14px;color:var(--muted);background:var(--panel);border:1px solid var(--line);padding:12px 14px;border-radius:14px;margin:18px 0}.checklist li{margin:8px 0}.legal main,.legal .article{max-width:900px}.search-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}@media(max-width:900px){.nav{display:none}.menu-btn{display:block}.header-inner{padding:12px 16px}.hero-inner{grid-template-columns:1fr;padding:44px 18px 34px}h1{font-size:38px}.lead{font-size:19px}.content-grid{display:block}.toc{position:static;margin-bottom:24px}.cards{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.site-header.open .nav{display:flex;position:absolute;left:12px;right:12px;top:60px;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow);align-items:flex-start}.site-header.open .nav a{font-size:17px}.search-grid{grid-template-columns:1fr}}@media(max-width:600px){h1{font-size:32px}h2{font-size:26px}.footer-grid{grid-template-columns:1fr}.hero-actions .btn{width:100%;text-align:center}body{font-size:16px}}

.product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:24px 0 34px}.product-card{border:1px solid var(--line);border-radius:20px;padding:20px;background:#fff;box-shadow:var(--shadow)}.product-card h3{margin:12px 0 10px}.product-card p{font-size:15.5px;color:#3b4a55}.product-card-top{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}.confidence{font-size:12px;color:var(--muted);font-weight:750}.product-specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 12px;margin:14px 0;padding:14px 16px;background:var(--panel);border:1px solid var(--line);border-radius:14px;list-style:none}.product-specs li{font-size:14px;margin:0}.product-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:16px}.button-placeholder{display:inline-block;background:var(--brand);color:#fff;border-radius:12px;padding:10px 12px;font-weight:800;font-size:14px}.source-link{font-size:14px;font-weight:750}.product-table th,.product-table td{font-size:14.5px}@media(max-width:900px){.product-grid{grid-template-columns:1fr}.product-specs{grid-template-columns:1fr}}

/* QA polish product sections */
.product-table table{font-size:.92rem}
.product-table th,.product-table td{vertical-align:top}
.product-grid{margin-top:1.1rem}
.product-card{border:1px solid var(--line);box-shadow:0 10px 24px rgba(15,33,48,.055)}
.product-card h3{margin-top:.55rem}
.product-card .product-actions{align-items:center}
.button-placeholder{background:#eef7f6;color:#255d62;border:1px solid #c9e5e3;border-radius:999px;padding:.55rem .8rem;font-weight:700;font-size:.86rem;display:inline-block}
.source-link{font-size:.86rem}
.note strong{color:#24424a}
@media (max-width: 720px){.product-table table{font-size:.86rem}.product-card{padding:1rem}.product-specs{grid-template-columns:1fr}.button-placeholder{width:100%;text-align:center}}


/* Browser/mobile QA v6 */
.skip-link{position:absolute;left:-999px;top:8px;background:#fff;color:var(--brand);border:1px solid var(--line);padding:8px 12px;border-radius:10px;z-index:100}.skip-link:focus{left:12px}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}.table-wrap table{min-width:620px}.product-table table{min-width:760px}@media(max-width:720px){main{padding-left:16px;padding-right:16px}.hero-card,.callout,.quick-box,.card{border-radius:16px}.table-wrap{margin-left:-2px;margin-right:-2px}th,td{padding:11px 12px}.breadcrumbs{font-size:13px}.lead{font-size:18px}.product-grid{gap:14px}.footer-inner{padding-bottom:34px}}

.amazon-link{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;background:#1f2937;color:#fff;text-decoration:none;font-weight:700;padding:.65rem 1rem;margin:.25rem .5rem .25rem 0;box-shadow:0 8px 18px rgba(17,24,39,.12)}
.amazon-link:hover{background:#111827;color:#fff}
.product-actions{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;margin-top:1rem}
.source-link{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;border:1px solid #d1d5db;padding:.6rem .95rem;text-decoration:none;font-weight:650;background:#fff}
@media (max-width:640px){.amazon-link,.source-link{width:100%;box-sizing:border-box}}


/* Homepage visual redesign v29 */
.hero-redesign{background:linear-gradient(180deg,#eef7f6 0%,#ffffff 88%)}
.hero-visual{grid-template-columns:minmax(0,1fr) minmax(360px,.92fr);gap:42px;padding-top:62px;padding-bottom:48px}.hero-visual h1{max-width:720px}.hero-figure,.section-figure,.article-figure{margin:0}.hero-figure img,.section-figure img,.article-figure img{display:block;width:100%;height:auto;border-radius:26px;border:1px solid var(--line);box-shadow:0 18px 42px rgba(15,89,97,.13);background:#fff}.hero-figure figcaption,.article-figure figcaption{font-size:14px;color:var(--muted);margin-top:10px;text-align:center}.section-heading{max-width:760px}.section-heading p{color:var(--muted);font-size:18px}.intro-paths{padding-top:12px}.feature-cards .card{padding:24px}.owner-note{padding:30px 32px;border-radius:28px;background:linear-gradient(135deg,#fbf7ef,#fff)}.owner-note h2{margin-top:4px}.visual-section{display:grid;grid-template-columns:minmax(0,.9fr) minmax(360px,1fr);gap:34px;align-items:center;margin:58px 0;padding:30px;border:1px solid var(--line);border-radius:30px;background:var(--panel);box-shadow:var(--shadow)}.visual-section.reverse{grid-template-columns:minmax(360px,1fr) minmax(0,.9fr)}.visual-section.reverse .visual-copy{order:2}.visual-section.reverse .section-figure{order:1}.visual-copy h2{margin-top:6px}.visual-copy p{color:#3b4a55}.link-list{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.link-list a{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 12px;font-weight:700;font-size:14px}.checklist-strip{display:flex;justify-content:space-between;align-items:center;gap:24px;margin:50px 0;padding:28px 30px;border-radius:28px;border:1px solid #c7e5e3;background:linear-gradient(135deg,#eef7f6,#fff);box-shadow:var(--shadow)}.checklist-strip h2{margin:4px 0 8px}.checklist-strip p{margin:0;color:#3b4a55}.library-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:22px}.library-grid>div{border:1px solid var(--line);border-radius:18px;background:#fff;padding:20px;box-shadow:var(--shadow)}.library-grid h3{margin-top:0}.library-grid ul{padding-left:18px;margin-bottom:0}.library-grid li{margin:8px 0}.footer-trust-strip{margin:46px 0 6px;padding:22px 24px;border:1px solid var(--line);border-radius:22px;background:#fff;color:#3b4a55}.article-figure{margin:22px 0}.article-figure img{border-radius:22px}@media(max-width:900px){.hero-visual,.visual-section,.visual-section.reverse{grid-template-columns:1fr}.visual-section.reverse .visual-copy,.visual-section.reverse .section-figure{order:initial}.visual-section{padding:22px;margin:38px 0;border-radius:24px}.library-grid{grid-template-columns:1fr 1fr}.checklist-strip{display:block}.checklist-strip .btn{margin-top:18px}}@media(max-width:600px){.hero-figure img,.section-figure img,.article-figure img{border-radius:18px}.library-grid{grid-template-columns:1fr}.owner-note{padding:22px}.checklist-strip{padding:22px}.link-list a{width:100%;text-align:center}}

/* Step 4 authority pass */
.callout.owner strong{color:var(--ink)}.article .related{margin-bottom:24px}.section#real-bathroom-decisions{padding-top:8px}


/* Step 5 visual trust and conversion polish */
.step5-panel{margin:30px 0}.trust-panel,.visual-decision,.measurement-card,.next-choice{border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:var(--shadow);padding:24px}.trust-panel{background:linear-gradient(135deg,#fff,#f7faf9)}.visual-decision{background:linear-gradient(135deg,#eef7f6,#fff)}.measurement-card{background:linear-gradient(135deg,#fbf7ef,#fff)}.priority-ladder{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:18px}.priority-ladder.three{grid-template-columns:repeat(3,minmax(0,1fr))}.priority-ladder>div{border:1px solid var(--line);border-radius:18px;background:#fff;padding:18px}.priority-ladder span,.measure-icon{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:999px;background:var(--brand);color:#fff;font-weight:850;margin-bottom:10px}.priority-ladder h3,.measure-row h3{margin:4px 0 8px}.priority-ladder p,.measure-row p,.mini-check-grid span,.decision-strip span,.choice-grid span{color:var(--muted);font-size:15px}.mini-check-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:18px}.mini-check-grid>div{border:1px dashed #b9d8d6;border-radius:16px;background:#fff;padding:16px}.mini-check-grid strong,.decision-strip strong,.choice-grid strong{display:block;color:var(--ink);margin-bottom:5px}.measure-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:18px 0}.measure-row>div{border:1px solid var(--line);border-radius:18px;background:#fff;padding:18px}.decision-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:18px 0}.decision-strip>div{border:1px solid #c7e5e3;border-radius:18px;background:#fff;padding:16px}.choice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:16px}.choice-grid a{display:block;border:1px solid var(--line);border-radius:18px;background:#fff;padding:18px;text-decoration:none}.choice-grid a:hover{border-color:#a8cecb;box-shadow:var(--shadow)}.step5-home-compare{border:1px solid var(--line);border-radius:28px;background:var(--panel);padding:28px;margin:46px 0}@media(max-width:900px){.priority-ladder,.priority-ladder.three,.mini-check-grid,.measure-row,.decision-strip,.choice-grid{grid-template-columns:1fr}.trust-panel,.visual-decision,.measurement-card,.next-choice{padding:20px;border-radius:20px}.step5-home-compare{padding:22px}}


/* Step 7 visual guide integration */
.guide-visual{margin:24px 0 30px;padding:12px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:var(--shadow)}
.guide-visual img{display:block;width:100%;height:auto;border-radius:18px;border:1px solid #e7eef1;background:#fff}
.guide-visual figcaption{font-size:14px;line-height:1.55;color:var(--muted);margin:10px 4px 2px;text-align:left}
.visual-guide-strip{margin:54px auto 20px;max-width:1180px;padding:30px;border:1px solid var(--line);border-radius:30px;background:linear-gradient(135deg,#eef7f6,#fff);box-shadow:var(--shadow)}
.visual-guide-strip>p{color:var(--muted);font-size:18px;max-width:760px}.visual-guide-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:22px}.visual-guide-grid a{display:block;border:1px solid var(--line);border-radius:20px;background:#fff;text-decoration:none;padding:12px;box-shadow:0 8px 18px rgba(15,33,48,.05)}.visual-guide-grid img{display:block;width:100%;height:auto;border-radius:14px;border:1px solid #e7eef1}.visual-guide-grid strong{display:block;margin:11px 4px 4px;color:var(--ink)}.visual-guide-grid span{display:block;margin:0 4px 4px;color:var(--muted);font-size:14px;line-height:1.35}@media(max-width:900px){.visual-guide-grid{grid-template-columns:1fr 1fr}.guide-visual{padding:8px;border-radius:20px}.guide-visual img{border-radius:14px}}@media(max-width:600px){.visual-guide-grid{grid-template-columns:1fr}.visual-guide-strip{padding:22px;border-radius:24px}}


/* Step 8 depth, scoring, and editorial judgment */
.step8-buy-skip,.step8-reality,.step8-product-depth{margin:30px 0;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:var(--shadow);padding:24px}
.step8-buy-skip{background:linear-gradient(135deg,#fff,#fbf7ef)}
.step8-reality{background:linear-gradient(135deg,#fff,#f7faf9)}
.score-item{border:1px solid var(--line);border-radius:16px;background:#fff;padding:14px}
.score-label{display:flex;justify-content:space-between;gap:12px;font-weight:800;margin-bottom:8px}.score-label span:last-child{color:var(--brand)}
.verdict-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:16px}.verdict-grid>div{border:1px solid var(--line);border-radius:18px;background:#fff;padding:18px}.verdict-grid h3{margin-top:0}
.judgment-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:16px}.judgment-list>div{border:1px dashed #b9d8d6;border-radius:16px;background:#fff;padding:16px}.judgment-list strong{display:block;color:var(--ink);margin-bottom:6px}.judgment-list span{display:block;color:var(--muted);font-size:15px;line-height:1.45}
.step8-product-depth ul{margin-bottom:0}
@media(max-width:900px){.verdict-grid,.judgment-list{grid-template-columns:1fr}.step8-buy-skip,.step8-reality,.step8-product-depth{padding:20px;border-radius:20px}}


/* Step 9 trust polish, reader flow, and conversion clarity */
.step9-trust,.step9-flow,.step9-proof,.step9-cta,.step9-method{margin:30px 0;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:var(--shadow);padding:24px}
.step9-trust{background:linear-gradient(135deg,#fbf7ef,#fff)}
.step9-flow{background:linear-gradient(135deg,#eef7f6,#fff)}
.step9-proof{background:linear-gradient(135deg,#fff,#f7faf9)}
.step9-cta{background:#fff}
.step9-method{background:linear-gradient(135deg,#fff,#eef7f6)}
.step9-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:16px}
.step9-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.step9-grid>div,.step9-grid>a{border:1px solid var(--line);border-radius:18px;background:#fff;padding:18px;text-decoration:none;display:block}
.step9-grid strong{display:block;color:var(--ink);margin-bottom:6px}.step9-grid span{display:block;color:var(--muted);font-size:15px;line-height:1.45}
.step9-next{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}.step9-next a{border:1px solid var(--line);border-radius:999px;background:#fff;padding:9px 13px;font-weight:750}
.step9-mini{font-size:14px;color:var(--muted);margin-top:10px}
@media(max-width:900px){.step9-grid,.step9-grid.two{grid-template-columns:1fr}.step9-trust,.step9-flow,.step9-proof,.step9-cta,.step9-method{padding:20px;border-radius:20px}}


/* Real owner photo blocks */
.owner-photo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:28px 0 34px}
.owner-photo-grid .article-figure{margin:0}
.owner-photo-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:24px 0 32px}
.owner-photo-strip .article-figure{margin:0}
.owner-note-inline{background:var(--warm);border:1px solid #efe1c7;border-radius:22px;padding:22px;margin:24px 0}
@media(max-width:900px){.owner-photo-grid,.owner-photo-strip{grid-template-columns:1fr}.owner-photo-grid .article-figure img,.owner-photo-strip .article-figure img{border-radius:20px}}