.site-header{gap:36px}.site-header nav{gap:25px}.page-intro{padding:45px 0 30px;max-width:800px}.page-intro h1{font:clamp(36px,5vw,62px)/1.08 var(--serif);letter-spacing:-1.8px}.page-intro .intro{max-width:700px;margin-top:22px}.breadcrumb{font-size:11px;color:var(--muted);display:inline-block;margin-bottom:25px}.page-actions{display:flex;align-items:center;gap:22px;margin:0 0 28px;flex-wrap:wrap}.page-actions>a:not(.outline-button){font-size:12px}.size-legend{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;background:#e7e8d9;padding:20px;border-radius:8px;font-size:11px}.size-legend b{display:block;font-size:13px;margin-bottom:4px}.full-chart{margin-top:15px}.full-chart caption{padding:15px;font:18px var(--serif)}.full-chart td a{display:block;padding:3px}.full-chart td a:hover{background:#e7e8d9}.chart-explainer{margin:30px 0}.chart-explainer h2{font-size:25px}.related-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:40px 0 55px}.related-tools>a{border:1px solid var(--line);border-radius:9px;background:var(--white);padding:25px;text-decoration:none;transition:transform .15s}.related-tools>a:hover{transform:translateY(-3px);border-color:var(--green)}.related-tools span{font:8px var(--mono);letter-spacing:1.1px;color:var(--copper)}.related-tools h3{font-size:25px;margin-top:14px}.related-tools p{font-size:12px;color:var(--muted);margin:12px 0 20px}.related-tools b{font-size:11px;font-weight:400}.breed-search{padding:25px;max-width:650px;margin-bottom:30px}.breed-search label{display:block;font-weight:600;margin-bottom:8px}.breed-search input{width:100%;border:1px solid var(--line);padding:14px;background:var(--white);font-size:16px;border-radius:5px}.breed-search p{font-size:12px;margin-top:12px}.breed-search a{text-decoration:underline}.breed-group{margin-bottom:35px}.breed-group h2{font-size:29px;margin-bottom:17px}.breed-group h2 span{font:11px Arial,sans-serif;color:var(--muted);margin-left:12px}.breed-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.breed-link{background:var(--white);border:1px solid var(--line);padding:18px;border-radius:7px;text-decoration:none}.breed-link:hover{border-color:var(--green);background:#e7e8d9}.breed-link span{display:block;font-size:15px}.breed-link small{display:block;font-size:10px;color:var(--muted);margin-top:7px}.puppy-guide{padding:45px 0 0}.puppy-month-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-top:20px}.puppy-month-grid a{padding:16px 12px;background:var(--white);border:1px solid var(--line);border-radius:6px;text-decoration:none}.puppy-month-grid a:hover{background:#e7e8d9}.puppy-month-grid strong{display:block;font:18px var(--serif)}.puppy-month-grid span{font-size:10px;color:var(--muted)}
@media(max-width:900px){.header-note{display:none}.site-header{gap:18px}.site-header nav{gap:16px}.related-tools{gap:10px}.related-tools>a{padding:18px}.puppy-month-grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:600px){.site-header{flex-wrap:wrap}.site-header nav{width:100%;justify-content:space-between;gap:12px}.site-header nav a:last-child{display:block}.page-intro{padding-top:28px}.page-intro h1{letter-spacing:-1px}.related-tools,.breed-grid{grid-template-columns:1fr}.size-legend{grid-template-columns:1fr 1fr}.related-tools{margin:30px 0}.related-tools h3{font-size:24px}.puppy-month-grid{grid-template-columns:repeat(3,1fr)}.puppy-month-grid a{padding:13px 9px}.page-actions{gap:15px}.page-actions .outline-button{min-height:44px}.breed-search{padding:20px}}
@media print{.related-tools,.page-actions,.puppy-guide,.breadcrumb,.breed-search{display:none!important}.page-intro{padding:12px 0}.page-intro h1{font-size:30px}.full-chart{overflow:visible;border:0}.full-chart table{font-size:10px;white-space:normal}.full-chart th,.full-chart td{padding:4px 10px}.full-chart tr{break-inside:avoid}.full-chart thead{display:table-header-group}.chart-explainer{display:block}.chart-explainer article{break-inside:avoid;margin-top:12px}.size-legend{font-size:10px;padding:10px}a{text-decoration:none}.breed-grid{grid-template-columns:repeat(3,1fr)}}

.site-header nav a[aria-current="page"]{text-decoration:underline;text-decoration-color:var(--copper);text-underline-offset:10px}

.seo-copy{margin:45px 0 25px}.seo-copy>section{padding:28px 0;border-top:1px solid var(--line)}.seo-copy h2{font:32px/1.2 var(--serif);letter-spacing:-.5px;margin-bottom:16px}.seo-copy h3{font:23px/1.25 var(--serif);margin:21px 0 9px}.seo-copy h4{font:600 13px/1.5 Arial,sans-serif;margin:19px 0 7px;color:var(--copper)}.seo-copy p{font-size:14px;line-height:1.85;color:var(--muted);max-width:850px}.seo-copy a{text-decoration:underline;text-underline-offset:3px}.seo-columns{display:grid;grid-template-columns:1fr 1fr;gap:45px}.seo-copy+.research-details{margin-bottom:25px}@media(max-width:600px){.seo-columns{grid-template-columns:1fr;gap:0}.seo-copy h2{font-size:28px}.seo-copy h3{font-size:22px}.seo-copy>section{padding:25px 0}.seo-copy p{font-size:13px}}@media print{.seo-copy{display:none!important}}

/* Readable method equations and numbered instructions. */
.seo-steps{padding-left:23px;color:var(--muted);font-size:14px;line-height:1.85;max-width:850px}.seo-steps li{padding:4px 0 4px 5px}.seo-formula{background:var(--paper,#f6f3eb);border-left:3px solid var(--copper);padding:14px 20px;margin:14px 0}.seo-formula p{margin:0}.seo-formula code{font-size:14px;white-space:normal}.seo-copy b{color:var(--ink,#203e35)}

/* Long-form guide navigation and worked comparison. */
.guide-contents{display:flex;flex-wrap:wrap;gap:10px 20px;padding:20px;margin-top:24px;border:1px solid var(--line);border-radius:8px;background:var(--white);font-size:13px}.guide-contents a{padding:7px 0;text-underline-offset:4px}.seo-copy p+p{margin-top:14px}.seo-copy .eyebrow{font-size:10px;margin-bottom:15px}.seo-table{margin:20px 0;max-width:850px}.seo-table caption{text-align:left;padding:14px;font-size:13px;white-space:normal}.seo-table th,.seo-table td{padding:12px 18px;text-align:left}.seo-copy section{scroll-margin-top:24px}.seo-copy .seo-columns p{max-width:100%}@media(max-width:600px){.guide-contents{gap:5px 16px;padding:15px}.seo-table th,.seo-table td{padding:10px}.seo-copy p{font-size:14px}}

/* Center the full reading column, including equations and references. */
.seo-copy{max-width:850px;margin:45px auto 25px}
.seo-copy+.research-details,.seo-copy~.sources{max-width:850px;margin-left:auto;margin-right:auto}
.seo-copy p,.seo-copy .seo-table{max-width:100%}

/* Compact brand signature: pet identity plus age conversion context. */
.site-header .brand{flex-shrink:0;gap:10px}.brand-lockup{display:flex;flex-direction:column;gap:5px}.brand-name{white-space:nowrap;line-height:1}.brand-descriptor{font:600 8px/1.2 Arial,sans-serif;letter-spacing:1.65px;color:var(--muted)}
@media(max-width:600px){.brand-descriptor{font-size:7px;letter-spacing:1.3px}.brand-lockup{gap:4px}}

/* The product name is the site brand. */
.site-header .brand{font-size:25px;letter-spacing:-.7px}.site-header .brand-name{line-height:1.15}@media(max-width:600px){.site-header .brand{font-size:23px;gap:9px}}

.seo-copy .editorial-byline{font-size:12px;margin:0 0 20px;color:var(--muted)}

/* Feedback entry remains visible beside the calculator actions. */
.calculator-tools .feedback-link{display:inline-flex;align-items:center;gap:6px;padding:10px 12px;font-size:11px;text-decoration:none;border-radius:5px}.feedback-link:hover{background:#dedfce}.feedback-link:focus-visible{outline:2px solid var(--green);outline-offset:2px}.contact-page{max-width:850px;margin:55px auto 70px;min-height:60vh}.contact-page h1{font:clamp(36px,5vw,56px)/1.1 var(--serif);letter-spacing:-1px}.contact-page>.intro{max-width:680px;margin:20px 0 30px}.contact-card{padding:30px}.contact-card h2,.contact-guidance h2{font:28px/1.2 var(--serif);margin:12px 0 16px}.contact-email{font-size:clamp(17px,3vw,23px);text-decoration:underline;overflow-wrap:anywhere}.contact-card p,.contact-guidance{font-size:14px;color:var(--muted);line-height:1.85}.contact-card p{margin:18px 0}.contact-send{margin-top:5px}.contact-card .contact-hint{font-size:12px;margin-bottom:0}.contact-guidance{margin:35px 0}.contact-guidance ul{padding-left:22px;margin-bottom:18px}.contact-guidance li{margin:10px 0}.contact-guidance>a{display:inline-block;margin-top:20px;text-decoration:underline}@media(max-width:600px){.calculator-tools{flex-wrap:wrap;gap:4px}.calculator-tools>div{display:flex;flex-wrap:wrap;align-items:center}.calculator-tools .feedback-link{padding:10px 7px;font-size:11px}.contact-page{margin-top:30px}.contact-card{padding:22px}}

/* Centered, readable policy pages with a keyboard-friendly contents list. */
.policy-page{max-width:900px;margin:45px auto 65px;padding:0 25px}.policy-page h1{font:clamp(36px,5vw,54px)/1.13 var(--serif);letter-spacing:-1px;margin:10px 0 18px}.policy-page p,.policy-page li{font-size:15px;line-height:1.9;color:var(--muted)}.policy-page p+p{margin-top:14px}.policy-page .policy-date{font-size:12px;margin-bottom:24px}.policy-lead{padding:22px 25px;background:#eae9dc;border-radius:9px;border:1px solid var(--line)}.policy-toc{display:grid;grid-template-columns:1fr 1fr;gap:12px 28px;margin:26px 0 35px;padding:22px 25px;border:1px solid var(--line);border-radius:8px;font-size:13px}.policy-page a{text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}.policy-page section{padding:27px 0;border-top:1px solid var(--line);scroll-margin-top:24px}.policy-page h2{font:29px/1.25 var(--serif);margin:0 0 16px}.policy-page h3{font:22px/1.3 var(--serif);margin:24px 0 10px}.policy-page ul{padding-left:23px;margin:16px 0}.policy-page li{padding:4px 0}.policy-contact{padding:25px;background:#eae9dc;border:1px solid var(--line);border-radius:8px}.policy-related{display:flex;flex-wrap:wrap;gap:16px 24px;margin-top:30px;font-size:13px}footer nav{flex-wrap:wrap;row-gap:14px}@media(max-width:600px){.policy-page{margin:28px auto 45px;padding:0 20px}.policy-toc{grid-template-columns:1fr;padding:20px;gap:14px}.policy-lead{padding:20px}.policy-page p,.policy-page li{font-size:14px}.policy-page h2{font-size:26px}.policy-contact{padding:20px}footer nav{margin-left:0;width:100%}}@media print{.policy-toc,.policy-related,.policy-page>.breadcrumb{display:none}.policy-page{max-width:none;margin:0;padding:0}.policy-page section{break-inside:auto}.policy-page h2,.policy-page h3{break-after:avoid}.policy-lead,.policy-contact{background:white}}