@charset "UTF-8";
:root{--bg:#faf9f5;--paper:#fff;--ink:#203e34;--body:#575e58;--muted:#777e75;--sage:#e1e9da;--sage-deep:#526b49;--accent:#bd6745;--line:#d9dcd3;--error:#a43d33;--radius:20px;--serif:Georgia,'Times New Roman',serif;--sans:'Helvetica Neue',Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6}button,input{font-family:var(--sans);font-size:16px}button,a,input,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit}button:disabled{cursor:not-allowed;opacity:.5}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--serif);font-weight:600;letter-spacing:-.035em;line-height:1.15}h1{font-size:clamp(40px,5vw,66px)}h2{font-size:32px}h3{font-size:23px}em{color:var(--sage-deep);font-weight:400}p{color:var(--body)}svg{flex-shrink:0}.icon{width:21px;height:21px;display:inline-block;vertical-align:middle}a,button,input,summary{outline-offset:5px}:focus-visible{outline:3px solid 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48px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;font-family:var(--serif);font-size:30px;font-weight:700;text-decoration:none;letter-spacing:-1.2px;white-space:nowrap;line-height:1.2}.brand>.icon{width:25px;height:42px;stroke-width:1.3}.brand.small{font-size:23px}.brand.small>.icon{height:32px;width:20px}#main-nav{display:flex;gap:32px}#main-nav a{font-size:14px;text-decoration:none;position:relative;padding:8px 0}#main-nav a[aria-current]{font-weight:600}#main-nav a[aria-current]:after{content:'';position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--sage-deep)}#main-nav a:hover{color:var(--accent)}.menu-toggle{display:none;background:none;border:1px solid var(--line);width:44px;height:44px;align-items:center;justify-content:center}.hero{display:grid;grid-template-columns:1.08fr 1fr;gap:68px;padding:52px 0 32px;align-items:start}.hero-copy 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21px;border:0;padding:0;min-width:0}.field-label,label,legend{font-size:14px;font-weight:500;line-height:1.5}.field-label,.field-group>label,legend,.height-field>label{display:block;margin-bottom:7px}.subtle{color:var(--muted);font-size:12px;font-weight:400}.segmented{display:flex;background:#f7f7f3;border:1px solid #cdd3c7;border-radius:9px;overflow:hidden;padding:3px}.segmented>button,.segmented>label{flex:1;width:50%;text-align:center;margin:0}.segmented button{border:0;background:transparent;color:var(--ink);font-size:15px;padding:10px;border-radius:6px}.segmented button[aria-pressed=true],.radio-segment input:checked+span{background:var(--sage);box-shadow:0 0 0 1px #c4cebb;font-weight:600}.radio-segment label{position:relative;cursor:pointer}.radio-segment input{position:absolute;opacity:0;width:1px;height:1px}.radio-segment input:focus-visible+span{outline:2px solid #a36e35;outline-offset:-2px}.radio-segment 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.icon{height:25px;width:25px}.guide-icon.clay{background:#f1e2d9;color:#b76643}.guide-link h3{font-size:20px;letter-spacing:-.4px;margin-bottom:8px;line-height:1.3}.guide-link p{font-size:13px;line-height:1.6}.guide-link .text-link{margin-top:14px}.reading-time{font-size:10px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:8px}.guide-link:hover h3{color:var(--accent)}.faq-section{display:grid;grid-template-columns:1fr 1.5fr;gap:80px;padding:32px 0 54px;border-top:1px solid var(--line);margin-top:10px}.faq-section h2{font-size:28px}.faq-section>div>p{font-size:15px;margin-top:10px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:17px 0;font-size:14px;list-style:none}.faq-list summary::-webkit-details-marker{display:none}.faq-list details[open] summary .icon{transform:rotate(180deg)}.faq-list details p{font-size:14px;margin:0 0 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20px}.panel-heading{display:flex;justify-content:space-between;align-items:center;gap:15px}.panel-heading h2{font-size:26px;letter-spacing:-.65px}.panel-heading>span{font-size:12px;color:var(--muted)}.chart-unit{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:3px 10px}.growth-chart{min-height:280px;position:relative;margin-top:18px}.empty-chart{min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:repeating-linear-gradient(to bottom,transparent 0,transparent 68px,#edf0e9 69px,transparent 70px);text-align:center}.empty-icon{display:flex;align-items:center;justify-content:center;background:var(--sage);height:58px;width:58px;border-radius:50%;margin-bottom:18px}.empty-icon .icon{width:27px;height:27px}.empty-chart h3{font-size:25px}.empty-chart p{font-size:14px;margin-top:8px}.chart-caption{font-size:11px;margin-top:4px;color:var(--muted)}.history-section{margin-top:30px}.history-section>.panel-heading{margin-bottom:18px}.empty-history{border:1px dashed #cdd4c5;border-radius:12px;padding:28px;text-align:center;color:var(--muted);font-size:14px}.measurement-panel{padding:26px}.measurement-panel h2{font-size:26px;margin-bottom:23px;letter-spacing:-.6px}.measurement-panel .field-group{margin-bottom:18px}.measurement-panel .button{margin-top:20px}.measurement-panel #cancel-edit{margin-top:5px}.standalone-input{font-size:15px;padding:10px 12px}.save-panel{background:#e8eddf;border:1px solid #d8e0d0;border-radius:15px;padding:23px;margin-top:18px}.save-panel h3{font-size:23px;margin-bottom:19px}.save-panel>label:not(.checkbox-label){display:block;margin-bottom:7px;font-size:12px}.save-panel input[type=text]{font-size:14px;height:44px}.checkbox-label{display:flex;align-items:flex-start;gap:9px;margin:18px 0 7px;cursor:pointer}.checkbox-label input{margin:4px 0 0;width:17px;height:17px;flex-shrink:0}.checkbox-label span{font-size:13px}.save-panel>p{font-size:11px;line-height:1.6}.save-status:not(:empty){margin-top:10px;color:var(--sage-deep);font-weight:500}.backup-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0 0}.backup-actions .button{padding:11px 8px;font-size:12px;gap:6px}.backup-actions .button>.icon{width:16px;height:16px}.text-button{border:0;background:none;display:flex;align-items:center;justify-content:center;gap:7px;color:var(--body);padding:12px;font-size:12px}.danger{color:#99513f}.backup-actions .danger{grid-column:1/-1;justify-self:center}.text-button .icon{width:16px;height:16px}.tracker-message{font-size:12px;margin-top:10px;color:var(--sage-deep);overflow-wrap:anywhere}.measurement-guide{display:flex;gap:12px;border-top:1px solid var(--line);margin-top:22px;padding-top:20px;text-decoration:none;font-size:12px;color:var(--body)}.measurement-guide>.icon{color:var(--sage-deep)}.measurement-guide strong{display:block;font-weight:400;color:var(--accent);margin-top:5px}.measurement-guide strong>.icon{width:15px;height:15px}.tracker-summary{display:flex;gap:28px;margin-top:22px;padding-bottom:16px;border-bottom:1px solid var(--line)}.stat-label{font-size:11px;color:var(--muted);display:block}.stat-value{font-family:var(--serif);font-size:27px;color:var(--ink);line-height:1.4}.stat-note{font-size:11px}.growth-svg{width:100%;height:auto;display:block;overflow:visible}.growth-svg text{font-family:var(--sans);font-size:11px;fill:#6b7469}.history-row{display:grid;grid-template-columns:1fr 1fr auto;gap:14px;align-items:center;border-bottom:1px solid var(--line);padding:16px 6px;font-size:14px}.history-row .measurement-value{font-weight:500}.history-row 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48px);margin:auto;padding:40px 0 60px}.back-link{font-size:13px;color:var(--sage-deep);text-decoration:none}.back-link:hover{text-decoration:underline}.article-header{margin:32px 0}.article-header h1{font-size:52px;margin:15px 0 20px;letter-spacing:-1.8px}.article-category{color:var(--sage-deep);font-size:12px}.article-intro{font-size:20px;line-height:1.6}.article-meta{font-size:12px;color:var(--muted);margin-top:22px}.prose{font-size:17px;line-height:1.85;color:var(--body)}.prose p{margin:0 0 20px}.prose h2{font-size:29px;color:var(--ink);margin:38px 0 16px;letter-spacing:-.7px}.prose h3{font-size:23px;color:var(--ink);margin:28px 0 12px}.prose ul,.prose ol{padding-left:25px;margin:0 0 24px}.prose li{padding-left:4px;margin:8px 0}.prose a{color:var(--sage-deep);text-decoration-thickness:1px;text-underline-offset:3px;overflow-wrap:anywhere}.prose strong{font-weight:600;color:var(--ink)}.prose blockquote,.prose .callout{background:var(--sage);border-left:3px solid var(--sage-deep);padding:20px 24px;margin:25px 0}.prose table{border-collapse:collapse;width:100%;font-size:14px}.prose td,.prose th{text-align:left;border-bottom:1px solid var(--line);padding:12px 8px}.prose code{font-size:14px;overflow-wrap:anywhere}.article-cta{margin-top:40px;background:var(--sage);border-radius:15px;padding:28px}.article-cta h2{font-size:29px}.article-cta p{margin:12px 0 20px;font-size:15px}.related-guides{border-top:1px solid var(--line);margin-top:40px;padding-top:28px}.related-guides h2{font-size:26px;margin-bottom:18px}.related-guides a{display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:15px 0;font-size:15px;text-decoration:none}.info-page{min-height:70vh;padding-top:10px}dialog{border:1px solid var(--line);border-radius:20px;background:var(--bg);color:var(--ink);padding:32px;width:min(440px,calc(100% - 32px));box-shadow:0 20px 80px #203e3422}dialog::backdrop{background:#14282066}dialog h2{font-size:29px;margin:15px 0}dialog p{font-size:14px}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:28px}.dialog-close{position:absolute;right:14px;top:12px;background:none;border:0;padding:6px;color:var(--body)}
@media(min-width:1400px){.hero{padding-top:58px}.growth-illustration{height:300px}.calculator{padding:32px}.calculator h2{font-size:35px}.hero-description{font-size:21px}}
@media(max-width:1150px){.container{width:calc(100% - 64px)}.header-inner{padding:20px 32px}#main-nav{gap:23px}.brand{font-size:26px}.hero{gap:35px}.hero-copy h1{font-size:55px;letter-spacing:-2.3px}.calculator{padding:25px}.calculator h2{font-size:28px}.tracker-banner{padding:24px}.tracker-banner h2{font-size:29px}.banner-chart{display:none}.guide-link{padding:0 18px;gap:12px}.guide-icon{height:40px;width:40px}.guide-link h3{font-size:19px}.tracker-layout{grid-template-columns:minmax(0,1fr) 315px;gap:23px}.chart-panel{padding:24px}.panel-heading h2{font-size:23px}.tracker-summary{gap:20px}.stat-value{font-size:23px}}
@media(max-width:900px){.brand{font-size:25px}.header-inner{gap:15px}#main-nav{gap:18px}#main-nav a{font-size:12px}.hero-copy h1{font-size:44px;letter-spacing:-1.9px}.hero-description{font-size:17px}.hero{gap:28px}.calculator{padding:22px}.calculator h2{font-size:25px}.parents-grid{gap:12px}.parents-grid label{font-size:13px}.growth-illustration{height:265px}.subtle{font-size:10px}.tracker-banner h2{font-size:26px}.tracker-banner p{font-size:14px}.tracker-banner .button{font-size:13px;padding:13px 16px}.guide-link{flex-direction:column}.faq-section{gap:40px}.tracker-layout{grid-template-columns:minmax(0,1fr) 295px;gap:18px}.measurement-panel{padding:21px}.chart-panel{padding:22px}.panel-heading h2{font-size:21px}.tracker-summary{flex-wrap:wrap;gap:15px}.growth-chart,.empty-chart{min-height:240px}.footer-main>p{display:none}.footer-links{margin-left:auto}.page-heading h1{font-size:45px}}
@media(max-width:700px){html{scroll-padding-top:20px}.container{width:calc(100% - 40px)}.header-inner{padding:16px 20px;flex-wrap:wrap}.brand{font-size:25px;gap:8px}.brand>.icon{width:23px;height:34px}.menu-toggle{display:flex}#main-nav{display:none;width:100%;flex-direction:column;gap:0;padding:8px 0}#main-nav.open{display:flex}#main-nav a{font-size:15px;padding:14px 4px;border-bottom:1px solid #e4e7dd}#main-nav a[aria-current]:after{display:none}#main-nav a[aria-current]{color:var(--sage-deep)}.hero{display:flex;flex-direction:column;gap:24px;padding:32px 0 28px}.hero-copy,.calculator-column{width:100%}.hero-copy h1{font-size:clamp(38px,9.8vw,57px);letter-spacing:-1.8px;line-height:1.12;white-space:normal}.hero-description{font-size:16px;line-height:1.6;margin:18px 0 0;max-width:500px}.growth-illustration{display:none}.calculator{padding:24px 22px 21px;border-radius:17px}.calculator h2{font-size:29px;margin-bottom:23px}.field-group{margin-bottom:19px}.parents-grid{gap:14px;margin-top:24px}.parents-grid label{font-size:14px}.subtle{font-size:11px}.input-wrap input{height:52px;font-size:18px}.segmented button,.radio-segment span{padding:12px 10px}.button{min-height:49px;font-size:15px}.form-footnote{font-size:11px}.field-help{margin-bottom:20px}.tracker-banner{margin:0;display:block;padding:25px;border-radius:15px}.tracker-banner h2{font-size:30px;max-width:270px}.tracker-banner p{font-size:15px;margin-top:10px}.tracker-banner .button{margin-top:22px;font-size:14px}.guides-section{padding:34px 0 24px}.guides-section>h2{font-size:29px;max-width:310px}.section-description{font-size:15px;margin-top:12px}.guide-grid{display:block;margin-top:25px}.guide-link{flex-direction:row;padding:23px 0!important;border-right:0;border-bottom:1px solid var(--line);gap:17px}.guide-link:first-child{padding-top:0!important}.guide-link h3{font-size:22px}.guide-link p{font-size:14px}.guide-icon{width:43px;height:43px}.guide-link .text-link{margin-top:10px}.guide-link:last-child{border:0}.faq-section{display:block;padding:28px 0 35px;margin-top:0}.faq-section h2{font-size:28px}.faq-section>div>p{margin:10px 0 16px}.faq-list summary{font-size:14px;padding:18px 0}.site-footer{padding:26px 20px 20px}.footer-main{flex-wrap:wrap;gap:20px}.footer-main .brand{font-size:22px}.footer-links{gap:18px;margin-left:0;font-size:12px}.footer-bottom{font-size:10px;flex-direction:column;gap:7px;margin-top:20px}.page-heading{padding:32px 0 23px}.page-heading h1{font-size:39px;letter-spacing:-1.3px;max-width:350px}.page-heading>p{font-size:16px;line-height:1.6;margin-top:16px}.privacy-note{font-size:12px;align-items:flex-start;gap:9px;padding:12px;margin-bottom:20px}.privacy-note>.icon{margin-top:2px}.tracker-layout{display:flex;flex-direction:column;gap:26px;padding-bottom:38px}.tracker-sidebar{display:contents}.tracker-main{display:contents}.chart-panel{order:0;padding:22px 20px 17px}.measurement-panel{order:1;padding:24px}.history-section{order:2;margin-top:0}.save-panel{order:3;margin-top:0;padding:24px}.backup-actions{order:4;margin-top:-10px}.tracker-message{order:5;margin:0}.measurement-guide{order:6;margin-top:0;padding-top:20px}.panel-heading h2{font-size:24px}.growth-chart,.empty-chart{min-height:220px}.chart-caption{font-size:10px}.measurement-panel h2{font-size:29px}.measurement-panel .field-group{margin-bottom:19px}.save-panel h3{font-size:27px}.save-panel>label:not(.checkbox-label){font-size:13px}.save-panel>p{font-size:12px}.checkbox-label span{font-size:14px}.backup-actions .button{font-size:14px}.history-row{font-size:13px;gap:10px;padding:13px 0;grid-template-columns:1fr 1fr 76px}.icon-button{width:37px;height:42px}.stat-value{font-size:27px}.tracker-summary{gap:22px}.guides-page{padding-bottom:42px}.guides-page .page-heading{padding-bottom:25px}.guides-page .guide-link{flex-direction:row}.guides-page .guide-link h3{font-size:24px}.guides-page .guide-link .guide-icon{width:43px;height:43px}.editorial-note{margin-top:20px;padding-top:22px;gap:12px}.editorial-note p{font-size:13px}.article-container{width:calc(100% - 40px);padding:28px 0 40px}.article-header{margin:24px 0}.article-header h1{font-size:39px;letter-spacing:-1.3px;line-height:1.15}.article-intro{font-size:18px}.article-meta{font-size:11px}.prose{font-size:16px;line-height:1.85}.prose h2{font-size:27px}.prose h3{font-size:22px}.prose blockquote,.prose .callout{padding:18px;margin:22px 0}.article-cta{padding:24px}.article-cta h2{font-size:28px}.related-guides a{font-size:14px}.info-page{padding-top:3px}.result-panel{padding:25px 23px}.range-label{font-size:11px}.result-number{font-size:59px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
:root{--auth-border:#c8cec2}
.account-button{border:1px solid var(--auth-border);background:transparent;color:var(--ink);padding:9px 14px;min-height:40px;font-size:14px;white-space:nowrap}
#main-nav{align-items:center;gap:24px}
.quota-note{font-size:12px;text-align:center;color:var(--sage-deep);margin-top:14px;line-height:1.55}
.form-footnote a{white-space:nowrap;text-underline-offset:2px}
.session-message{max-width:1280px;margin:16px auto 0;padding:12px 20px;font-size:13px;background:var(--sage);border-radius:8px}
#login-dialog{padding:36px 30px 26px;max-height:calc(100dvh - 32px);overflow:auto}
.login-eyebrow{display:block;font-size:10px;letter-spacing:.14em;font-weight:600;color:var(--sage-deep);margin-top:12px}
#login-dialog h2{font-size:34px;line-height:1.1;max-width:310px;margin:16px 0}
.login-benefit{margin:16px 0 24px;font-size:13px!important}
.google-button{background:#fff;color:#1f1f1f;border:1px solid #747775;border-radius:8px;min-height:48px;font-weight:500}
.login-status{font-size:12px!important;margin:12px 0;color:#805234;line-height:1.55}
.login-dismiss{margin:8px auto;min-height:44px;font-size:14px;text-decoration:underline;text-underline-offset:3px}
.login-privacy{font-size:11px!important;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;margin-top:12px}
.auth-callback{padding-top:70px;min-height:65vh}.auth-callback h1{margin:20px 0}.callback-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
@media(max-width:1000px) and (min-width:701px){.header-inner{gap:14px;padding-left:28px;padding-right:28px}.brand{font-size:25px}#main-nav{gap:14px}#main-nav a,.account-button{font-size:12px}}
@media(max-width:700px){#main-nav{align-items:stretch;gap:0}.account-button{margin-top:16px;min-height:46px;font-size:15px}.session-message{margin:12px 20px 0}.quota-note{font-size:12px}#login-dialog{padding:32px 24px 22px}#login-dialog h2{font-size:32px}}

/* Optional analytics controls use the same visual language as the tools. */
.analytics-settings{padding:0;border:0;border-radius:0;background:none;color:inherit;font:inherit;text-decoration:underline;text-underline-offset:3px}.analytics-consent{position:fixed;z-index:80;left:24px;right:24px;bottom:24px;margin:auto;max-width:1100px;display:flex;align-items:center;gap:24px;padding:22px 26px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 32px #203b2426;max-height:calc(100dvh - 48px);overflow:auto}.analytics-consent h2{font-size:23px;margin-bottom:8px}.analytics-consent p{font-size:14px;line-height:1.6}.analytics-consent-actions{display:flex;gap:10px;flex-shrink:0}.analytics-consent-actions .button{font-size:14px;padding:12px 16px;white-space:nowrap}@media(max-width:800px){.analytics-consent{left:12px;right:12px;bottom:12px;flex-direction:column;align-items:stretch;gap:16px;padding:20px;max-height:calc(100dvh - 24px)}.analytics-consent-actions{flex-wrap:wrap}.analytics-consent-actions .button{flex:1}}