@font-face{font-family:DM;src:url('/assets/dm-sans.ttf') format('truetype');font-weight:400;font-display:swap}@font-face{font-family:Caslon;src:url('/assets/caslon.ttf') format('truetype');font-weight:400;font-display:swap}
:root{--paper:#f8f7f3;--ink:#263e36;--muted:#647069;--line:#dedfd6;--green:#264f40;--pale:#e9ede5;--cream:#efeee7;--white:#fffefa;--radius:14px;--serif:Caslon,Georgia,serif;--sans:DM,Arial,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 var(--sans);-webkit-font-smoothing:antialiased}::selection{background:#d9e5ce;color:#193b2b}::-webkit-scrollbar{width:8px;height:7px}::-webkit-scrollbar-thumb{background:#b5c1b5;border-radius:5px}a{color:inherit;text-underline-offset:4px}button,input,select{font:inherit;color:inherit;accent-color:var(--green);caret-color:var(--green)}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,select,summary{cursor:pointer}button{border:0}button:disabled{cursor:wait;opacity:.6}:focus-visible{outline:2px solid var(--green);outline-offset:4px}button,a,summary{touch-action:manipulation}p{margin:0 0 16px;color:var(--muted)}h1,h2,h3{font-weight:400;margin:0;text-wrap:balance}h1,h2{font-family:var(--serif);line-height:1.05;letter-spacing:-.025em}h1{font-size:76px}h2{font-size:43px}h3{font-size:17px;font-weight:600;line-height:1.4}.icon{width:21px;height:21px;flex-shrink:0;vertical-align:middle}.site-header{max-width:1320px;margin:auto;height:96px;padding:0 56px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--serif);font-size:29px;white-space:nowrap}.brand>.icon{width:28px;height:31px}.site-header nav{display:flex;gap:34px;align-self:stretch;align-items:center}.site-header nav a{text-decoration:none;font-size:13px;height:100%;display:grid;place-items:center;position:relative}.site-header nav a[aria-current]:after{content:'';height:2px;position:absolute;bottom:23px;left:0;right:0;background:var(--green)}.site-header a:hover{color:#102c21}.header-note{font-family:var(--serif);font-size:19px;color:var(--muted)}main{max-width:1120px;margin:auto;padding:0 24px}.intro{text-align:center;padding:40px 0 30px}.intro p{margin:13px 0 0;font-size:15px}.title-dot{color:#a99b72}.mobile-only{display:none}.sizer{display:grid;grid-template-columns:minmax(0,1fr) 310px;overflow:hidden;background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}.measurement-workspace{padding:25px 35px 22px;min-width:0}.steps{display:flex;list-style:none;margin:0 0 20px;padding:0;gap:26px;font-size:12px;color:var(--muted)}.steps li{display:flex;gap:9px;align-items:center}.steps li span{width:23px;height:23px;border:1px solid #bac2b9;border-radius:50%;display:grid;place-items:center;font-size:11px}.steps li[aria-current]{color:var(--green)}.steps li[aria-current] span,.steps li.complete span{background:var(--green);border-color:var(--green);color:white}.stage-heading{text-align:center}.stage-heading h2{font-size:29px}.stage-heading p{font-size:12px;line-height:1.6;margin:9px 0 0}.card-chip:before,.slider-label{display:flex;justify-content:space-between;align-items:center;font-size:12px}.slider-label>span{font-size:10px;color:var(--muted)}.range-row{display:flex;gap:15px;align-items:center;margin-top:7px}.icon-button{width:36px;height:36px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;background:transparent;flex-shrink:0}.icon-button .icon{width:16px;height:16px}.icon-button:hover{background:var(--pale)}input[type=range]{width:100%;height:32px;background:transparent;cursor:ew-resize;appearance:none;-webkit-appearance:none;--fill:28.6%}input[type=range]::-webkit-slider-runnable-track{height:3px;border-radius:5px;background:linear-gradient(to right,var(--green) var(--fill),#d9ded4 var(--fill))}input[type=range]::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:17px;height:17px;background:var(--white);border:4px solid var(--green);border-radius:50%;margin-top:-7px}input[type=range]::-moz-range-track{height:3px;background:#d9ded4}input[type=range]::-moz-range-progress{height:3px;background:var(--green)}input[type=range]::-moz-range-thumb{width:10px;height:10px;border:4px solid var(--green);background:var(--white);border-radius:50%}.hint{display:flex;align-items:center;justify-content:center;gap:6px;font-size:10px;margin:8px 0 15px}.hint .icon{width:13px;height:13px}.button{min-height:46px;padding:11px 22px;border-radius:6px;display:inline-flex;justify-content:center;align-items:center;gap:13px;text-decoration:none;font-size:12px;font-weight:600;transition:background .16s,color .16s}.primary{background:var(--green);color:#fffefa}.primary:hover{background:#163d2d}.calibrate-button{width:100%}.calibrate-button .icon{width:17px}.sizer-aside{background:var(--pale);padding:27px 28px;display:flex;flex-direction:column;align-items:stretch}.aside-top{position:relative}.small-ring{display:none}.aside-top h2{font-size:32px;line-height:1.05;margin-bottom:12px}.aside-top p{font-size:12px;line-height:1.7;max-width:28ch}.size-card-preview{background:#faf9f3;min-height:176px;padding:18px 20px;position:relative;transform:rotate(-3deg);margin:6px 6px 24px;border-radius:7px;box-shadow:0 8px 15px -9px #50604640}.size-card-preview>span:first-child{font-size:8px;letter-spacing:.11em}.preview-placeholder{font-family:var(--serif);font-size:30px;line-height:1.05;margin:17px 0 10px}.size-card-preview p{font-size:8px;margin:7px 0 23px}.preview-mark{font-family:var(--serif);font-size:15px;position:absolute;bottom:12px;right:16px}.save-button{width:100%;font-size:11px}.save-button .icon{width:15px;height:15px}.aside-footnote{text-align:center;font-size:10px;margin:10px 0 18px}.privacy{display:flex;align-items:center;justify-content:center;gap:5px;font-size:9px;margin:auto 0 0}.privacy .icon{width:11px;height:11px}.tool-status{font-size:12px;text-align:center;margin:0;min-height:0}.tool-status:not(:empty){padding-top:13px}.trust-line{display:flex;justify-content:center;gap:40px;padding:22px 0 0;font-size:11px;color:var(--muted)}.trust-line span{display:flex;gap:7px;align-items:center}.trust-line .icon{width:14px;height:14px;color:var(--green)}.section{margin-top:88px}.section-heading{text-align:center;margin-bottom:32px}.section-heading p{font-size:13px;margin:12px 0 0}.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}.how-grid article h3{margin:18px 0 10px;font-size:15px}.how-grid article h3>span{color:#73806d;margin-right:5px}.how-grid article>p{font-size:12px;line-height:1.85;max-width:38ch}.step-art{height:170px;border-radius:8px;display:flex;align-items:center;justify-content:center;background:var(--cream);position:relative;overflow:hidden}.art-ring{background:#eae5d9;flex-direction:column;gap:15px}.mini-ring{width:78px;height:78px;border:8px solid #c0a777;border-radius:50%;outline:1px solid #8d7545;box-shadow:inset 0 0 0 1px #8d7545}.art-ring>span{font-size:9px;color:#605a47}.mini-saved{background:#fffcf3;padding:17px 26px;transform:rotate(5deg);box-shadow:0 5px 12px -8px #454a35;border-radius:4px}.mini-saved span{font-size:7px;display:block;letter-spacing:.08em}.mini-saved b{display:block;font-family:var(--serif);font-size:36px;font-weight:400;line-height:1.4}.editorial{display:grid;grid-template-columns:1fr 1fr;background:#efeee7;border-radius:var(--radius);overflow:hidden}.editorial>img{width:100%;height:100%;min-height:380px;object-fit:cover}.editorial>div{padding:45px}.editorial h2{font-size:50px;margin-bottom:20px}.editorial p{font-size:13px;line-height:1.85}.arrow-link{display:inline-flex;align-items:center;gap:14px;font-size:12px;font-weight:600;text-decoration:none;border-bottom:1px solid #b9c4b5;padding-bottom:5px}.arrow-link:hover{border-color:var(--green)}.arrow-link .icon{width:17px;height:17px}.conversion{display:grid;grid-template-columns:.9fr 1.1fr;gap:75px;align-items:center}.conversion h2{font-size:48px;margin-bottom:24px}.conversion p{font-size:13px;line-height:1.85}.table-scroll{overflow:auto;border:1px solid var(--line);border-radius:8px}table{width:100%;border-spacing:0;border-collapse:separate;text-align:center;font-size:13px;font-variant-numeric:tabular-nums;white-space:nowrap}thead{background:#eeefe7}th,td{padding:13px 20px;border-bottom:1px solid #e4e6dc;font-weight:400}thead th{font-size:11px;color:var(--muted);font-weight:600}table small{font-size:10px}tbody tr:last-child>*{border-bottom:0}tbody tr.common>*{background:#f1f3ed}tbody tr.selected>*{background:#dce6d6;color:#244631}tbody tr.selected th{font-weight:700}tbody tr:hover>*{background:#e6ecdf}tr>:first-child{position:sticky;left:0;z-index:1;background:var(--paper);border-right:1px solid var(--line)}thead tr>:first-child{background:#eeefe7}td.diameter{font-weight:600;color:var(--green)}.source-note{font-size:10px!important;line-height:1.8!important;margin:14px 0 0;max-width:85ch}.reading-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:35px;border-top:1px solid var(--line);padding-top:38px}.reading-grid h2{font-size:27px;margin-bottom:18px;line-height:1.1}.reading-grid p{font-size:12px;line-height:1.9}.faq{display:grid;grid-template-columns:1fr 1.3fr;gap:60px;border-top:1px solid var(--line);padding-top:48px}.faq h2{font-size:42px;margin-bottom:16px}.faq>div>p{font-size:12px}.questions details{border-bottom:1px solid var(--line)}.questions summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:63px;padding:16px 0;font-size:13px}.questions summary::-webkit-details-marker{display:none}.questions summary .icon{width:17px;height:17px;transition:transform .2s}.questions details[open] summary .icon{transform:rotate(45deg)}.questions details p{font-size:12px;line-height:1.9;max-width:70ch;margin-right:20px}.bottom-cta{margin:88px 0 60px;text-align:center;padding:52px 20px;background:var(--pale);border-radius:var(--radius)}.bottom-cta h2{font-size:48px;margin-bottom:24px}.site-footer{max-width:1320px;margin:auto;padding:38px 56px 44px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:30px;align-items:center}.site-footer .brand{font-size:25px}.site-footer>div>p{font-size:11px;margin:10px 0 0}.site-footer nav{display:flex;gap:25px;font-size:11px}.site-footer nav a{text-decoration:none}.footer-note{font-size:10px;text-align:right;margin:0}.skip-link{position:absolute;left:20px;top:-80px;background:var(--green);color:white;padding:10px;z-index:5}.skip-link:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;clip:rect(0,0,0,0);overflow:hidden}.noscript{padding:20px;text-align:center;background:#e8e3d0}[hidden]{display:none!important}
/* Measurement is expressed in calibrated CSS pixels; never transform this circle. */
.calibrated-note{display:flex;align-items:center;gap:5px;font-size:10px;color:var(--green);margin-bottom:15px}.calibrated-note .icon{width:14px;height:14px}.text-button{padding:0;background:none;text-decoration:underline;text-underline-offset:3px;font-size:10px;margin-left:auto}.ring-stage{height:171px;display:flex;align-items:center;justify-content:center;position:relative;margin:6px 0 8px;overflow:auto}#ring-circle{width:57.8px;height:57.8px;outline:1px solid var(--green);border-radius:50%;position:relative;flex-shrink:0;touch-action:none;cursor:ew-resize;background:#ebefe638}.diameter-line{position:absolute;left:0;right:0;height:1px;top:50%;background:#758a7166}.diameter-line:before,.diameter-line:after{content:'';position:absolute;height:6px;width:1px;top:-3px;background:#758a71}.diameter-line:before{left:0}.diameter-line:after{right:0}.crosshair{position:absolute;width:155px;height:155px;border:1px dashed #dbe0d5;border-radius:50%;pointer-events:none}.ring-stage output{position:absolute;bottom:3px;font-size:11px;font-variant-numeric:tabular-nums}.unit-switch{display:flex;gap:2px;background:var(--cream);padding:2px;border-radius:4px}.unit-switch button{font-size:10px;padding:3px 9px;background:transparent;border-radius:3px}.unit-switch button[aria-pressed=true]{background:var(--white);color:var(--green)}.measurement-result{border-top:1px solid var(--line);margin-top:19px;padding-top:17px}.result-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.result-heading h3{font-size:12px}.result-heading>span{font-size:9px;color:var(--muted)}.size-values{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;align-items:center;font-variant-numeric:tabular-nums}.size-values>div{display:flex;flex-direction:column;align-items:center}.size-values>div>span{font-size:10px;color:var(--muted)}.size-values strong{font-size:25px;font-weight:400;line-height:1.4}.size-values .primary-size strong{font-size:40px;font-family:var(--serif)}.measurement-result>p{font-size:10px;text-align:center;margin:8px 0 0}.measurement-result>p strong{font-weight:400;color:var(--ink)}.measurement-result>p span{margin-left:6px}#preview-value{display:flex;align-items:baseline;gap:13px}#preview-value>strong{font-family:var(--serif);font-size:67px;font-weight:400;line-height:1.3}#preview-value>span{font-size:8px}.breadcrumb{display:flex;gap:10px;font-size:10px;color:var(--muted);padding-top:25px}.breadcrumb a{text-decoration:none}.chart-intro{padding:25px 0 34px}.chart-intro h1{font-size:68px}.chart-intro p{font-size:14px;line-height:1.8}.quick-lookup{background:var(--pale);border-radius:var(--radius);padding:27px 30px;display:grid;grid-template-columns:1.1fr .9fr 1.2fr;gap:30px;align-items:center}.quick-lookup h2{font-size:27px;line-height:1.1}.quick-lookup>div>p{font-size:11px;margin:9px 0 0}.lookup-inputs{display:flex;gap:10px}.lookup-inputs label{font-size:10px;display:flex;flex-direction:column;gap:5px;flex:1;min-width:0}.lookup-inputs label:first-child{flex:1.7}.lookup-inputs select{height:43px;background:var(--white);border:1px solid #c5cec0;border-radius:5px;padding:0 10px;width:100%;font-size:12px}.lookup-result{border-left:1px solid #cbd4c5;padding-left:25px}.lookup-result .size-values{gap:15px}.lookup-result .size-values strong{font-size:21px}.lookup-result .primary-size strong{font-size:33px}.lookup-result p{font-size:10px;text-align:center;margin:6px 0 0}.lookup-result p>span{color:var(--muted)}.chart-section{margin-top:43px}.chart-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}.chart-heading h2{font-size:34px}.chart-heading p{font-size:12px;margin:10px 0 0}.table-legend{display:flex;align-items:center;gap:7px;font-size:10px;color:var(--muted);margin:20px 0 12px}.legend-dot{background:#dce6d6;width:9px;height:9px;display:inline-block}.scroll-hint{display:none;margin-left:auto}.chart-section table th,.chart-section table td{padding:13px 26px}.chart-section .table-scroll{max-height:650px}.chart-section thead th{position:sticky;top:0;z-index:2;background:#eeefe7}.chart-section thead th:first-child{z-index:3}.chart-cta{display:flex;align-items:center;justify-content:space-between;gap:25px;background:var(--pale);margin-top:30px;padding:27px 30px;border-radius:9px}.chart-cta>div{display:flex;gap:18px;align-items:center}.chart-cta>div>.icon{width:37px;height:37px}.chart-cta h2{font-size:29px}.chart-cta p{font-size:11px;margin:6px 0 0}.chart-reading{grid-template-columns:1fr 1fr;gap:80px}.chart-reading h2{font-size:34px}.system-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}.system-grid article{border-top:1px solid var(--line);padding-top:22px}.system-grid article>span{font-size:10px;color:#5c6c53;letter-spacing:.07em}.system-grid h3{font-size:15px;line-height:1.5;margin:12px 0}.system-grid p{font-size:12px;line-height:1.9}.guide{max-width:730px;margin-left:auto;margin-right:auto}.guide h2{font-size:42px}.guide ol{padding-left:21px;font-size:13px;line-height:1.9;color:var(--muted);margin:25px 0}.guide li{padding-left:8px;margin:13px 0}.guide li strong{color:var(--ink);font-weight:600}
@media(min-width:1100px){.intro{padding-top:27px}.site-header{height:83px}.sizer-aside{padding-top:28px}}
@media(max-width:900px){.site-header{padding:0 28px;height:78px}.header-note{display:none}.sizer{grid-template-columns:minmax(0,1fr) 265px}.measurement-workspace{padding:23px}.sizer-aside{padding:25px 20px}.steps{gap:16px;font-size:10px}.stage-heading h2{font-size:25px}.section{margin-top:65px}.editorial>div{padding:30px}.editorial h2{font-size:40px}.conversion{gap:35px}.faq{gap:30px}.site-footer{padding:32px 28px}.quick-lookup{grid-template-columns:1fr 1fr;gap:22px}.lookup-result{grid-column:1/-1;border-left:0;border-top:1px solid #cbd4c5;padding:15px 0 0}.lookup-result .size-values{max-width:400px;margin:auto}.system-grid{grid-template-columns:1fr 1fr}.chart-section table th,.chart-section table td{padding:13px 22px}}
@media(max-width:650px){body{font-size:14px}.site-header{padding:0 20px;height:70px;gap:10px}.brand{font-size:24px;gap:6px}.brand>.icon{width:23px;height:26px}.site-header nav{gap:20px}.site-header nav a{font-size:11px}.site-header nav a:last-child{display:none}.site-header nav a[aria-current]:after{bottom:16px}main{padding:0 18px}.intro{padding:25px 0 24px}.intro h1{font-size:60px}.intro p{font-size:12px;line-height:1.8;margin-top:9px}.mobile-only{display:block}.sizer{display:flex;flex-direction:column}.measurement-workspace{padding:20px 18px 18px}.steps{font-size:10px;gap:18px;margin-bottom:19px}.steps li{gap:6px}.steps li span{width:20px;height:20px}.stage-heading h2{font-size:25px;line-height:1.1}.stage-heading p{font-size:10px;margin-top:8px}.slider-label{font-size:10px}.slider-label>span{font-size:8px}.range-row{gap:9px;margin-top:4px}.icon-button{height:32px;width:32px}.hint{font-size:9px;margin:7px 0 12px;line-height:1.4}.calibrate-button{min-height:42px;font-size:10px;padding:10px}.sizer-aside{padding:16px 18px 14px;display:grid;grid-template-columns:1fr auto;gap:0 12px;align-items:center}.aside-top,.size-card-preview{display:none}.save-button{grid-column:1/-1;min-height:41px;font-size:11px}.aside-footnote{grid-column:1/-1;margin:7px 0 0;font-size:8px}.privacy{grid-column:1/-1;margin:10px 0 0;font-size:8px}.trust-line{gap:15px;font-size:8px;padding-top:16px}.trust-line span{gap:4px}.trust-line .icon{width:11px;height:11px}.section{margin-top:60px}.section-heading{margin-bottom:25px}.section-heading h2{font-size:34px}.section-heading p{font-size:11px;max-width:30ch;margin:12px auto 0}.how-grid{display:block}.how-grid article{display:grid;grid-template-columns:112px 1fr;gap:0 17px;margin-top:20px;align-items:start}.step-art{height:120px;grid-row:1/3}.how-grid article h3{margin:5px 0 8px;font-size:13px}.how-grid article>p{font-size:11px;line-height:1.7;margin:0}.mini-ring{width:49px;height:49px;border-width:5px}.art-ring{gap:10px}.art-ring>span{font-size:6px}.mini-saved{padding:10px 12px}.mini-saved b{font-size:28px}.mini-saved span{font-size:5px}.editorial{grid-template-columns:1fr}.editorial>img{min-height:0;height:235px;object-position:center 42%}.editorial>div{padding:30px}.editorial h2{font-size:43px}.editorial p{font-size:12px}.conversion{grid-template-columns:1fr;gap:26px}.conversion h2{font-size:43px}.conversion>div>p{font-size:12px}.conversion h2 br{display:none}.reading-grid{grid-template-columns:1fr;gap:28px;padding-top:30px}.reading-grid h2{font-size:30px;margin-bottom:12px}.reading-grid article p:last-child{margin-bottom:0}.faq{grid-template-columns:1fr;gap:15px;padding-top:30px}.faq h2{font-size:38px;margin-bottom:11px}.questions summary{font-size:12px;min-height:60px}.questions details p{font-size:11px}.bottom-cta{margin:60px 0 40px;padding:35px 20px}.bottom-cta h2{font-size:37px}.bottom-cta .button{font-size:11px}.site-footer{flex-direction:column;align-items:flex-start;padding:28px 24px;gap:23px}.footer-note{text-align:left;font-size:9px}.site-footer nav{font-size:11px;gap:30px}.ring-stage{height:150px}.measurement-result{padding-top:15px;margin-top:15px}.result-heading h3{font-size:11px}.result-heading>span{font-size:8px}.size-values strong{font-size:23px}.size-values .primary-size strong{font-size:36px}.calibrated-note{font-size:9px}.chart-intro{padding:24px 0}.chart-intro h1{font-size:47px;white-space:nowrap}.chart-intro p{font-size:11px}.breadcrumb{font-size:9px;padding-top:18px}.quick-lookup{padding:22px;grid-template-columns:1fr;gap:18px}.quick-lookup h2{font-size:29px;max-width:18ch}.lookup-result{grid-column:auto}.lookup-inputs select{font-size:12px}.chart-section{margin-top:30px}.chart-heading{display:block}.chart-heading h2{font-size:31px}.chart-heading p{font-size:11px}.chart-heading .arrow-link{margin-top:15px;font-size:10px}.table-legend{font-size:9px}.scroll-hint{display:inline;font-size:8px}.chart-section table th,.chart-section table td{padding:12px 21px;font-size:12px}.chart-section table{min-width:540px}.chart-section .table-scroll{max-height:520px}.chart-cta{display:block;padding:24px}.chart-cta>div{gap:13px}.chart-cta>div>.icon{width:29px;height:29px}.chart-cta h2{font-size:25px}.chart-cta p{font-size:10px}.chart-cta .button{width:100%;margin-top:20px}.system-grid{gap:22px}.system-grid h3{font-size:13px}.system-grid p{font-size:11px}.guide h2{font-size:36px}.guide ol{font-size:12px}.source-note{font-size:9px!important}.tool-status{font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
/* Keep the measuring task within a short first viewport. */
@media(min-width:651px){.site-header{height:70px}.intro{padding:14px 0 20px}.intro h1{font-size:58px}.intro p{font-size:13px;margin-top:7px}.measurement-workspace{padding:18px 28px}.steps{margin-bottom:12px}.stage-heading h2{font-size:26px}.stage-heading p{font-size:11px;margin-top:6px;line-height:1.45}#calibrate-stage .stage-heading p br{display:none}.range-row{margin-top:3px}.hint{margin:5px 0 10px}.calibrate-button{min-height:42px}.sizer-aside{padding-top:25px}.aside-top h2{font-size:30px}.aside-top p{font-size:11px}.size-card-preview{min-height:160px;padding-top:14px;margin-bottom:19px}.preview-placeholder{font-size:29px;margin:11px 0 8px}.aside-footnote{font-size:9px;margin-bottom:12px}.chart-intro{padding-top:25px;padding-bottom:30px}.chart-intro h1{font-size:64px}}
@media(max-width:650px){body{padding-bottom:77px}.site-header{height:56px}.intro{padding:15px 0}.intro h1{font-size:48px}.intro p{font-size:11px;margin-top:6px;line-height:1.6}.measurement-workspace{padding:15px 16px}.steps{margin-bottom:12px}.stage-heading h2{font-size:22px}#calibrate-stage .stage-heading h2{display:none}.stage-heading p{font-size:10px;line-height:1.5;margin-top:0}.hint{margin:5px 0 10px;font-size:8px}.calibrate-button{min-height:40px}.sizer-aside{display:block;position:fixed;z-index:4;left:0;right:0;bottom:0;padding:11px 18px calc(11px + env(safe-area-inset-bottom));background:var(--paper);border-top:1px solid var(--line)}.sizer-aside .aside-footnote,.sizer-aside .privacy{display:none}.sizer-aside .save-button{min-height:42px}.chart-intro{padding:20px 0 25px}.chart-intro h1{font-size:47px}.chart-intro p{font-size:11px}.ring-stage{height:130px}.measurement-result{margin-top:12px;padding-top:12px}}
@media(max-width:650px){#measure-stage .stage-heading h2{display:none}#measure-stage .hint{display:none}.calibrated-note{margin-bottom:6px}.ring-stage{height:90px;min-height:calc(var(--ring-pixels, 58px) + 20px)}.measurement-result{margin-top:8px;padding-top:8px}.measurement-result .size-values .primary-size strong{font-size:32px}.measurement-result>p{margin-top:5px}.chart-intro h1{font-size:clamp(36px,11vw,47px)}}
#measure-stage .stage-heading h2,#measure-stage .hint{display:none}.calibrated-note{margin-bottom:6px}.ring-stage{height:90px;min-height:calc(var(--ring-pixels,58px) + 20px)}.measurement-result{margin-top:8px;padding-top:8px}
.ring-stage{padding-bottom:20px;min-height:calc(var(--ring-pixels,58px) + 40px)}.crosshair{width:74px;height:74px}
@media(max-width:650px){.measurement-result>p{margin-top:2px}}
/* Ring measurement: a single true-scale edge and controls outside the ring. */
.steps button{padding:0;border:0;background:none;font-size:inherit;text-align:left;color:inherit;text-decoration:underline;text-underline-offset:3px}
.steps button:hover{color:var(--green)}
#ring-circle{outline:none;border:2px solid #92702b;background:#f7efd9;box-sizing:border-box;cursor:ew-resize}
#ring-circle:hover{background:#f1e3bc}
.diameter-line{background:#92702b55}
.diameter-line:before,.diameter-line:after{background:#92702b}
.ring-stage{height:114px;min-height:calc(var(--ring-pixels,58px) + 52px);padding:25px 0 27px;background:#fffefa;border-radius:8px;margin:8px 0}
.stage-placement{position:absolute;top:3px;font-size:10px;color:var(--muted)}
.ring-stage output{bottom:2px;font-size:13px;font-weight:600;color:var(--ink)}
.ring-stage.is-locked #ring-circle{pointer-events:none;cursor:default}
.ring-stage.is-locked .stage-placement{color:var(--green)}
#measure-stage .icon-button{width:44px;height:44px}
#measure-stage .range-row{gap:12px}
.measurement-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:8px}
.measurement-actions p{font-size:10px;line-height:1.5;max-width:38ch;margin:0}
#lock-measurement{display:flex;align-items:center;justify-content:center;gap:5px;min-height:34px;padding:6px 10px;background:var(--pale);border-radius:5px;font-size:10px;white-space:nowrap}
#lock-measurement .icon{width:13px;height:13px}
#lock-measurement:hover{background:#dce6d6}
#lock-measurement[aria-pressed=true]{background:var(--green);color:white}
#measure-stage button:disabled{cursor:not-allowed;opacity:.4}
.fit-guide{margin-top:14px;border-top:1px solid var(--line)}
.fit-guide summary{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:42px;font-size:11px;list-style:none}
.fit-guide summary::-webkit-details-marker{display:none}
.fit-guide summary .icon{width:15px;height:15px}
.fit-guide[open] summary .icon{transform:rotate(45deg)}
.fit-examples{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:4px 0 10px}
.fit-examples figure{margin:0;text-align:center;min-width:0}
.fit-examples svg{width:100%;height:85px;background:#f2f2eb;border-radius:6px}
.fit-examples figcaption strong{display:block;font-size:11px;font-weight:600;margin:6px 0 3px}
.fit-examples figcaption span{display:block;font-size:10px;line-height:1.5;color:var(--muted)}
.correct-fit figcaption strong{color:var(--green)}
.fit-examples .correct-fit svg{background:#e8eee1}
.fit-disclaimer{font-size:9px;line-height:1.6;margin:10px 0}
.starting-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:32px;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.starting-points a{text-decoration:none;display:flex;flex-direction:column;gap:5px;padding:2px 10px}
.starting-points a strong{font-size:13px;font-weight:600}
.starting-points a span{font-size:11px;display:flex;align-items:center;gap:10px;color:var(--muted)}
.starting-points a .icon{width:15px;height:15px}
.starting-points a:hover strong{text-decoration:underline;text-underline-offset:4px}
.is-measuring .intro{padding:11px 0 14px}
.is-measuring .intro h1{font-size:46px}
.is-measuring .intro p{display:none}
@media(max-width:650px){.is-measuring .intro{padding:8px 0 12px}.is-measuring .intro h1{font-size:40px}.measurement-actions{margin-top:6px;gap:10px}.measurement-actions p{font-size:9px}.stage-placement{font-size:9px}.fit-guide{margin-top:10px}.fit-examples{gap:8px}.fit-examples svg{height:70px}.fit-examples figcaption strong{font-size:10px}.fit-examples figcaption span{font-size:9px}.starting-points{grid-template-columns:1fr;gap:0;padding:4px 0;margin-top:24px}.starting-points a{padding:13px 0}.starting-points a+a{border-top:1px solid var(--line)}.starting-points a strong{font-size:12px}.starting-points a span{font-size:11px}.measurement-result .primary-size strong{font-size:30px!important;line-height:1.2}.fit-guide summary{font-size:10px}}
/* Reference lengths stay fixed in millimetres; only the surrounding layout adapts. */



.scale-not-set{font-size:10px;line-height:1.5;margin:7px 0 0;color:#71623b}

.linear-reference{position:relative;flex-shrink:0;box-sizing:border-box;height:44px;margin:auto;border-left:2px solid var(--green);border-right:2px solid var(--green)}
.linear-reference:before{content:'';position:absolute;left:0;right:0;top:20px;height:2px;background:var(--green)}
.linear-reference>span{position:absolute;top:50px;left:50%;transform:translateX(-50%);white-space:nowrap;font-size:10px;color:var(--muted)}
.scale-check{border-top:1px solid var(--line);margin-top:0}
.scale-check summary{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:42px;list-style:none;font-size:11px}
.scale-check summary::-webkit-details-marker{display:none}
.scale-check summary .icon{width:15px;height:15px}
.scale-check[open] summary .icon{transform:rotate(45deg)}
.scale-check>p{font-size:11px;line-height:1.7;margin:0 0 8px}
.scale-check-scroll{overflow:auto;padding:12px 4px 32px}
.verification-line{position:relative;height:16px;box-sizing:border-box;border-left:1px solid var(--green);border-right:1px solid var(--green);flex-shrink:0}
.verification-line:before{content:'';position:absolute;top:7px;left:0;right:0;height:1px;background:var(--green)}
.verification-line>span{position:absolute;left:0;top:20px;font-size:10px;white-space:nowrap}
.scale-check .scale-check-note{font-size:9px}
@media(max-width:650px){.scale-not-set{font-size:9px;margin-top:6px}.linear-reference>span{font-size:9px}.scale-check summary{font-size:10px}.scale-check>p{font-size:10px}#calibrate-stage .stage-heading p{min-height:30px}}
/* Explain ruler setup before measurement. */
.setup-explanation h2{font-size:31px;line-height:1.12;letter-spacing:-.02em}
.setup-explanation>p{font-size:13px;line-height:1.7;margin:10px 0 0;max-width:61ch}
.setup-explanation .setup-privacy{font-size:10px;line-height:1.6;margin-top:8px;color:var(--green)}
.setup-instruction{font-size:12px;line-height:1.7;margin:17px 0 0;max-width:66ch;color:var(--ink)}






.setup-next{font-size:10px;text-align:center;margin:8px 0 12px;color:var(--muted)}

@media(max-width:650px){.setup-explanation h2{font-size:29px;line-height:1.1}.setup-explanation>p{font-size:12px;line-height:1.65;margin-top:10px}.setup-explanation .setup-privacy{font-size:10px;margin-top:8px}.setup-instruction{font-size:11px;line-height:1.6;margin-top:15px}.setup-next{font-size:9px;line-height:1.6;margin:8px 0 10px}.linear-reference>span{font-size:8px}.calibrate-button{font-size:10px}}
.ruler-stage{display:flex;align-items:center;min-height:124px;overflow:auto;padding:10px 6px 38px;margin:8px 0}
.ruler-stage .linear-reference{margin:auto}
.art-ruler{background:#eceee6}
.art-ruler svg{width:80%;max-width:235px;height:auto}
@media(max-width:650px){.ruler-stage{min-height:116px;margin:5px 0}.art-ruler svg{width:100%;transform:rotate(-8deg)}}
/* Three clear stages: establish scale, match the ring, confirm the result. */
.steps{justify-content:space-between;gap:12px}
.setup-privacy a{margin-left:4px;text-underline-offset:3px}
#measure-stage .stage-heading h2{display:block;font-size:27px;margin:14px 0 9px}
#measure-stage .stage-heading p{max-width:57ch;margin:0 auto;font-size:12px;line-height:1.7}
.confirm-fit{width:100%;margin-top:15px}
.measurement-result{scroll-margin-bottom:85px}
.measurement-result .result-fit-note{font-size:11px;line-height:1.7;margin:12px auto;max-width:57ch}
#adjust-measurement{display:block;margin:12px auto 4px;min-height:40px;padding:8px 12px;font-size:12px}
.faq-intro .arrow-link{margin-top:8px}
.faq-intro .faq-reference{max-width:35ch;margin:28px 0 8px;font-size:12px;line-height:1.8}
.faq-source{font-size:12px}
.questions summary{font-size:14px;line-height:1.6}
.questions details p{font-size:14px;line-height:1.85;margin:0 0 22px;max-width:70ch}
.questions details[open] summary{font-weight:600}
@media(max-width:650px){
 .steps{font-size:10px;gap:9px}
 .steps li{gap:5px}
 #measure-stage .stage-heading h2{font-size:25px;margin-top:12px}
 #measure-stage .stage-heading p{font-size:12px}
 .confirm-fit{font-size:12px;line-height:1.6;padding:10px 12px}
 .faq h2{font-size:35px;max-width:15ch}
 .faq-intro .faq-reference{margin-top:18px;max-width:45ch}
 .questions summary{font-size:14px;min-height:64px;padding:17px 0}
 .questions details p{font-size:14px;line-height:1.8}
}

@media(max-width:650px){.tool-offscreen .sizer-aside{visibility:hidden;pointer-events:none}}
/* Finger-first sizing: exact-model setup, two measuring rails and explicit estimates. */
.measurement-mode{grid-column:1/-1;display:flex;padding:12px;gap:8px;background:var(--paper);border-bottom:1px solid var(--line)}
.measurement-mode button{flex:1;text-align:left;padding:12px 18px;border-radius:6px;background:transparent;font-size:14px;font-weight:600;line-height:1.5}
.measurement-mode button span{display:block;font-size:11px;font-weight:400;color:var(--muted)}
.measurement-mode button[aria-pressed=true]{background:var(--green);color:var(--white)}
.measurement-mode button[aria-pressed=true] span{color:#e5eee4}
.profile-label{display:block;font-size:12px;font-weight:600;margin:22px 0 8px}
#device-profile{width:100%;min-height:48px;border:1px solid #b4c0b4;border-radius:6px;background:var(--paper);font-size:14px;padding:10px 12px}
.profile-message{font-size:12px;line-height:1.7;margin:12px 0}
.profile-evidence{font-size:10px;line-height:1.7;margin:0 0 18px}
.profile-evidence span{display:block}
#confirm-profile{width:100%;font-size:12px}
#confirm-profile:disabled{cursor:not-allowed}
.profile-alternative{font-size:11px;margin:12px 0 0;line-height:1.7}
#open-demo{padding:0;background:none;font-size:inherit;text-decoration:underline;text-underline-offset:3px;min-height:30px}
.manual-calibration{margin-top:20px;border-top:1px solid var(--line)}
.manual-calibration summary{min-height:48px;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px}
.manual-calibration summary::-webkit-details-marker{display:none}
.manual-calibration summary .icon{width:15px;height:15px}
.manual-calibration[open] summary .icon{transform:rotate(45deg)}
.scale-basis-note{font-size:11px;line-height:1.65;margin:10px 0 14px;color:#6c603f}
.finger-stage{position:relative;min-height:230px;display:flex;align-items:center;justify-content:center;overflow:auto;margin:10px 0 14px;padding:32px 26px 45px}
.finger-placement{position:absolute;top:4px;font-size:11px;color:var(--muted);text-align:center;left:0;right:0}
#finger-guides{position:relative;height:148px;flex-shrink:0;background:#efe6c44d}
.finger-axis{position:absolute;left:50%;top:12px;bottom:12px;border-left:1px dashed #bdc5b6;pointer-events:none}
.finger-edge{position:absolute;top:0;bottom:0;width:44px;padding:0;background:transparent;touch-action:none;cursor:ew-resize;transform:translateX(-50%)}
.finger-edge:before{content:'';position:absolute;top:0;bottom:0;left:50%;width:1px;background:#92702b}
.finger-edge:after{content:'';position:absolute;top:0;bottom:0;left:calc(50% - 4px);right:calc(50% - 4px);border-top:1px solid #92702b;border-bottom:1px solid #92702b}
.finger-edge span{position:absolute;bottom:-20px;left:calc(50% - 9px);width:18px;height:18px;background:var(--white);border:1px solid #92702b;border-radius:50%}
.left-edge{left:0}.right-edge{left:100%}
.finger-stage output{position:absolute;bottom:0;font-size:13px;font-variant-numeric:tabular-nums;color:var(--ink)}
.finger-stage.is-locked .finger-edge{pointer-events:none}
#measure-stage .finger-edge:disabled{opacity:1}
#measure-stage .finger-edge:hover:before{width:2px}
.nearby-sizes{text-align:center;font-size:11px;margin:10px 0}
.range-message{font-size:14px;margin:18px 0;line-height:1.8}
.result-actions{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap}
.result-actions .text-button,#adjust-measurement{font-size:12px;min-height:44px;margin:0;padding:8px 0}
.knuckle-note{font-size:12px;line-height:1.8;margin:14px 0}
.phone-profile-art{background:#e8ece1}
.mini-phone{padding:21px 26px;background:var(--white);border:1px solid #bcc6b7;border-radius:12px;text-align:center}
.mini-phone span{display:block;font-size:9px}
.mini-phone strong{font-family:var(--serif);font-size:30px;font-weight:400;display:block;margin:10px 0}
.width-art{background:#ece8dc;flex-direction:column;gap:18px}
.width-art>span:last-child{font-size:10px}
.width-diagram{width:64px;height:88px;border-left:1px solid #92702b;border-right:1px solid #92702b;background:#e8ddbd88}
@media(max-width:650px){
 .measurement-mode{padding:8px;gap:5px}
 .measurement-mode button{font-size:12px;padding:10px 12px}
 .measurement-mode button span{font-size:10px}
 .setup-explanation h2{font-size:29px}
 .profile-label{margin-top:18px}
 .finger-stage{min-height:224px}
 #measure-stage .stage-heading h2{font-size:25px}
 #measure-stage .stage-heading p{font-size:12px}
 .scale-basis-note{font-size:10px;margin:8px 0 12px}
 .mini-phone{padding:11px 14px}
 .mini-phone strong{font-size:24px;margin:6px 0}
 .mini-phone span{font-size:7px}
 .width-diagram{height:70px;width:48px}
 .width-art{gap:10px}
 .width-art>span:last-child{font-size:8px}
 .result-actions{gap:14px}
}
#device-profile{font-size:16px}
.device-detection{font-size:13px;line-height:1.7;margin:18px 0 4px;color:var(--ink)}
#retry-detection{min-height:44px;font-size:12px;padding:8px 0;margin:0 0 8px}
.manual-profile{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:8px;padding-bottom:0}
.manual-profile[open]{padding-bottom:18px}
.manual-profile summary{min-height:48px;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;cursor:pointer}
.manual-profile summary::-webkit-details-marker{display:none}
.manual-profile summary .icon{width:15px;height:15px}
.manual-profile[open] summary .icon{transform:rotate(45deg)}
.manual-profile .profile-label{margin-top:6px}
.measurement-source{display:inline-block;font-size:11px;text-underline-offset:3px;margin:0 0 14px;min-height:24px}
/* Guides extend the existing type, paper and ink system. */
.site-header nav{gap:25px}
.nav-guides{position:relative;font-size:13px;height:100%;display:flex;align-items:center}
.nav-guides>summary{list-style:none;display:flex;align-items:center;gap:6px;min-height:44px}
.nav-guides>summary::-webkit-details-marker{display:none}
.nav-guides>summary .icon{width:13px;height:13px}
.nav-guides-menu{position:absolute;top:calc(100% - 16px);right:0;width:220px;z-index:25;padding:10px 16px;background:var(--white);border:1px solid var(--line);border-radius:8px}
.site-header nav .nav-guides-menu a{display:block;min-height:44px;height:auto;padding:10px 0;font-size:13px}
.site-header nav .nav-guides-menu a[aria-current]:after{bottom:6px}
.site-footer nav{display:grid;grid-template-columns:repeat(3,max-content);gap:10px 25px}
.resource-intro{max-width:850px;margin:0 auto;padding-bottom:42px}
.resource-intro h1{font-size:clamp(44px,5vw,68px)}
.resource-intro p{max-width:72ch;margin:18px auto 0;font-size:16px;line-height:1.8}
.resource-directory{border-top:1px solid var(--line);padding-top:34px}
.resource-directory h2{font-size:36px;margin-bottom:24px}
.resource-directory nav{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.resource-directory nav a{display:flex;flex-direction:column;gap:4px;text-decoration:none;border-top:1px solid var(--line);padding:20px 0}
.resource-directory nav a:hover strong{text-decoration:underline;text-underline-offset:4px}
.resource-directory strong{font-size:16px;font-weight:500}
.resource-directory span{font-size:13px;color:var(--muted)}
.chart-resource-links{display:flex;flex-wrap:wrap;gap:16px 30px;font-size:13px;margin-top:42px}
.converter-tool{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white)}
.converter-tool form{padding:34px}
.converter-tool h2{font-size:32px;margin-bottom:25px}
.converter-tool label{display:block;font-size:13px;font-weight:600;margin-bottom:7px}
.converter-tool select,.converter-tool input{width:100%;min-height:48px;border:1px solid #aab8a6;border-radius:6px;padding:10px 12px;background:var(--paper);font-size:16px}
.conversion-fields{display:grid;grid-template-columns:minmax(0,1fr) 110px;gap:14px;margin-top:22px}
.conversion-fields input[aria-invalid=true]{border:2px solid #865129}
#conversion-help{font-size:12px;line-height:1.8;margin:10px 0 22px;min-height:44px}
.converter-tool button[type=submit]{width:100%;font-size:14px}
.conversion-output{padding:34px;background:var(--pale);min-width:0}
.conversion-output>p{font-size:16px;margin-top:0;color:var(--ink)}
.conversion-output h2{margin-bottom:14px}
.conversion-output p{font-size:12px;line-height:1.8}
.conversion-output a{font-size:13px}
.conversion-output .size-values{margin:25px 0;border-bottom:1px solid #bac7b3;padding-bottom:22px}
.conversion-output .size-values strong{font-size:38px;font-family:var(--serif);font-weight:400}
.conversion-output .size-values>div:first-child strong{font-size:64px}
.conversion-examples{display:flex;flex-wrap:wrap;gap:6px 12px;font-size:11px;margin-top:20px;align-items:center}
.conversion-examples span{width:100%;color:var(--muted)}
.conversion-examples button{padding:7px 0;background:transparent;text-decoration:underline;text-underline-offset:3px;min-height:36px}
.measurement-values{margin:20px 0;font-size:13px}
.measurement-values>div{padding:10px 0;border-bottom:1px solid #cbd5c4}
.measurement-values dt{color:var(--muted);font-size:11px}
.measurement-values dd{margin:2px 0 0;font-variant-numeric:tabular-nums}
.converter-notes{max-width:800px;margin-left:auto;margin-right:auto}
.converter-notes h2{font-size:38px;margin-bottom:20px}
.converter-notes>p{font-size:15px;line-height:1.9}
.measurement-explainer{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin:25px 0 30px}
.measurement-explainer figure,.guide-diagram{margin:0;background:var(--cream);padding:16px;border-radius:8px}
.measurement-explainer svg,.guide-diagram svg{width:100%;height:auto;display:block;fill:var(--ink);font:14px var(--sans)}
.measurement-explainer figcaption,.guide-diagram figcaption{font-size:12px;line-height:1.8;color:var(--muted)}
.resource-next{border-top:1px solid var(--line);margin-top:65px;padding-top:22px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.resource-next a{text-decoration:none;font-size:15px}
.resource-next a:hover{text-decoration:underline}
.resource-next span{font-size:12px;display:block;color:var(--muted);margin-top:7px}
.article-layout{display:grid;grid-template-columns:190px minmax(0,1fr);gap:65px;margin-top:5px;align-items:start}
.article-toc{position:sticky;top:25px;display:flex;flex-direction:column;gap:14px;padding-top:6px;font-size:13px}
.article-toc strong{font-size:12px;font-weight:500;color:var(--muted);margin-bottom:6px}
.article-toc a{text-decoration:none;min-height:24px}
.article-toc a:hover{text-decoration:underline}
.article-body{min-width:0;max-width:74ch}
.article-body section{margin-bottom:52px}
.article-body h2{font-size:38px;line-height:1.15;margin-bottom:22px}
.article-body h3{font-size:18px;margin:28px 0 10px}
.article-body p,.instruction-list{font-size:15px;line-height:1.9}
.article-body p:last-child{margin-bottom:0}
.article-body .guide-diagram{margin:20px 0 25px;max-width:540px}
.article-body .guide-diagram svg{max-height:180px}
.instruction-list{padding-left:22px;margin:22px 0}
.instruction-list li{padding-left:5px;margin-bottom:20px;color:var(--muted)}
.instruction-list strong{color:var(--ink);font-weight:600}
.method-table{white-space:normal;min-width:560px;text-align:left}
.method-table th,.method-table td{padding:14px 16px;line-height:1.8;font-size:13px}
.article-body .table-scroll{margin-bottom:24px}
.method-definitions{margin:0 0 22px}
.method-definitions>div{border-top:1px solid var(--line);padding:19px 0}
.method-definitions dt{font-size:18px;margin-bottom:7px}
.method-definitions dd{margin:0;font-size:15px;line-height:1.9;color:var(--muted)}
.device-table{min-width:620px;text-align:left;font-size:12px}
.device-table th,.device-table td{padding:12px 14px}
.print-download{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:70px;align-items:center}
.print-download h2{font-size:42px;margin-bottom:22px}
.print-download p{font-size:15px;line-height:1.9}
.download-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 12px}
.download-actions .button{font-size:13px}
.secondary{background:var(--pale);color:var(--green);border:1px solid #b3c3aa}
.secondary:hover{background:#dbe5d2}
.print-download .download-note{font-size:11px;margin-bottom:24px}
.print-download figure{margin:0;padding:22px;background:var(--cream);border-radius:8px}
.print-download img{display:block;width:100%;height:auto;border:1px solid var(--line)}
.print-download figcaption{font-size:11px;line-height:1.8;margin-top:10px;color:var(--muted)}
.print-steps{max-width:800px;margin-left:auto;margin-right:auto}
.print-steps h2{font-size:38px}
body:not([data-page=home]) #main{padding-bottom:45px}
@media(max-width:1100px){.header-note{display:none}.site-header{padding-left:30px;padding-right:30px}.article-layout{gap:35px;grid-template-columns:165px minmax(0,1fr)}.print-download{gap:35px}}
@media(max-width:750px){.site-footer nav{gap:10px 18px}.article-layout{display:block}.article-toc{position:static;flex-direction:row;flex-wrap:wrap;gap:10px 20px;margin-bottom:35px;padding-bottom:20px;border-bottom:1px solid var(--line)}.article-toc strong{width:100%;margin:0}.print-download{gap:26px}.converter-tool form,.conversion-output{padding:24px}.converter-tool h2{font-size:29px}}
@media(max-width:650px){
 .site-header{padding-left:18px;padding-right:18px;gap:15px}
 .site-header nav{gap:14px}
 .site-header nav>a{display:grid!important;font-size:11px}
 .site-header nav>.nav-home{display:none!important}
 .nav-guides{font-size:11px}
 .nav-guides>summary .icon{width:11px;height:11px}
 .site-header nav .nav-guides-menu a{display:block!important;font-size:13px}
 .nav-guides-menu{top:calc(100% - 5px);right:-4px}
 .site-header .brand{font-size:25px;gap:6px}
 .site-header .brand>.icon{width:22px;height:26px}
 .resource-intro{padding-top:30px;padding-bottom:30px}
 .resource-intro h1{font-size:43px}
 .resource-intro p{font-size:14px;line-height:1.8}
 .converter-tool{grid-template-columns:1fr}
 .conversion-output{min-height:130px}
 .conversion-fields{grid-template-columns:minmax(0,1fr) 96px}
 .measurement-explainer{grid-template-columns:1fr;gap:20px}
 .resource-directory nav{grid-template-columns:1fr}
 .resource-directory h2,.converter-notes h2,.article-body h2,.print-steps h2{font-size:32px}
 .resource-next{grid-template-columns:1fr;gap:20px;margin-top:40px}
 .print-download{grid-template-columns:1fr}
 .print-download h2{font-size:35px}
 .print-download figure{max-width:360px;margin:0 auto}
 .download-actions .button{width:100%}
 .site-footer nav{grid-template-columns:repeat(2,max-content);text-align:left;gap:10px 28px}
 .article-body p,.instruction-list,.method-definitions dd{font-size:14px}
 .chart-resource-links{font-size:12px;gap:14px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Normal text on pale result and illustration surfaces keeps at least 4.5:1 contrast. */
.conversion-output p,.conversion-output dt,.conversion-output .size-values>div>span,.measurement-explainer figcaption,.guide-diagram figcaption,.print-download figcaption{color:#5b675f}
.converter-tool input::placeholder{color:#5b675f;opacity:1}

.trust-page{max-width:74ch;margin:0 auto 65px}.trust-page h2{font-size:32px;line-height:1.2;margin:38px 0 18px}.trust-page p{font-size:15px;line-height:1.9}.trust-page .policy-date{font-size:13px}.trust-links{display:flex;flex-wrap:wrap;gap:18px;border-top:1px solid var(--line);padding-top:25px;margin-top:40px;font-size:13px}.contact-address{padding:24px;background:var(--pale);margin:28px 0}.contact-address h2{margin:0 0 15px}.contact-address>a{font-size:clamp(16px,4vw,23px);overflow-wrap:anywhere}.contact-address p{color:#5b675f;font-size:13px;margin:15px 0 0}.feedback-outline{font:13px/1.9 var(--sans);white-space:pre-wrap;overflow-wrap:anywhere;padding:20px;background:var(--cream);color:var(--ink)}@media(max-width:650px){.trust-page h2{font-size:29px}.trust-page p{font-size:14px}}