:root{font-family:Arial,Helvetica,sans-serif;color:#192335;background:#f5f6f8;font-synthesis:none;--navy:#172031;--lime:#d1ed91;--muted:#606977;--line:#dfe3e9}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #637eab;outline-offset:4px}a{color:inherit}header{height:90px;max-width:1200px;margin:auto;padding:0 32px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}header>a:last-child{font-size:14px;text-decoration:none}.brand{font-size:28px;font-weight:800;letter-spacing:-1.4px;text-decoration:none;display:flex;align-items:center;gap:8px}.brand-icon{font-size:39px;font-weight:400}.brand-dot{color:#79993c;margin-left:-7px}main{max-width:1136px;margin:0 auto;padding:42px 0 0}.intro{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:1.8px;margin:0 0 14px}h1{font-size:44px;letter-spacing:-1.8px;margin:0 0 13px}p{line-height:1.6}.intro p:last-child{margin:0;color:var(--muted)}.device-note{font-size:13px;border:1px solid var(--line);border-radius:30px;padding:11px 15px;color:var(--muted)}.workspace{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:28px;align-items:start}.tool{border:1px solid var(--line);background:#fff;border-radius:18px;overflow:hidden}.tabs{display:flex;background:#eef0f3;padding:6px;gap:5px;border-bottom:1px solid var(--line)}.tabs button{width:50%;border:0;border-radius:10px;padding:16px 8px;background:transparent;color:var(--muted);font-weight:600;font-size:15px}.tabs button[aria-selected=true]{background:#fff;box-shadow:0 2px 5px #14203110;color:var(--navy)}[role=tabpanel]{padding:26px 30px}.stephead{display:flex;gap:12px;align-items:center}.step{background:#f0f3e9;border:1px solid #e0e7d2;border-radius:50%;width:34px;height:34px;display:grid;place-items:center;font-size:12px;flex-shrink:0;font-weight:700}h2{font-size:18px;margin:0;font-weight:650;letter-spacing:-.3px}.stephead p{font-size:13px;margin:5px 0 0;color:var(--muted)}.badge{font-size:11px;margin-left:auto;border:1px solid #e4d4a3;background:#fcf8e8;padding:7px 9px;border-radius:20px;white-space:nowrap}.badge.ready{background:#eaf3dc;border-color:#c8dcae}#calibration>p{font-size:14px;margin:22px 0 0;color:var(--muted)}.cal-stage{padding:38px 0 22px;display:flex;justify-content:center;overflow:hidden}#calLine{height:18px;width:204px;border:solid #253653;border-width:0 2px;position:relative;flex-shrink:0}#calLine:after{content:'';position:absolute;top:8px;left:0;right:0;border-top:2px solid #253653}#calLine span{position:absolute;left:50%;transform:translateX(-50%);bottom:27px;font-size:12px;white-space:nowrap;color:var(--muted)}.range-row{display:flex;align-items:center;gap:17px}.square{border:1px solid var(--line);background:#fff;border-radius:10px;width:44px;height:44px;flex-shrink:0;font-size:23px}input[type=range]{width:100%;accent-color:var(--navy);height:32px;min-width:0}.primary{display:flex;justify-content:center;gap:20px;width:100%;background:var(--navy);color:#fff;border:0;border-radius:10px;padding:14px;margin-top:15px;font-weight:600;font-size:14px}#calibration .micro{font-size:12px;text-align:center;margin-top:10px}.second{border-top:1px solid var(--line);margin-top:24px;padding-top:24px}.ring-stage{height:220px;display:flex;align-items:center;justify-content:center;position:relative;margin-top:15px;border:1px solid #e4e7ed;border-radius:12px;background:radial-gradient(#dce1e8 .8px,transparent .8px);background-size:12px 12px}.stage-label,.stage-caption{position:absolute;text-align:center;font-size:11px;color:var(--muted);left:12px;right:12px}.stage-label{top:17px;letter-spacing:1.1px}.stage-caption{bottom:16px;font-size:12px}#ringCircle{width:65px;height:65px;border:2px solid #536b35;border-radius:50%;background:#d1ed9170;flex-shrink:0;position:relative}.diameter-line{position:absolute;left:0;right:0;top:50%;border-top:1px dashed #60754370}fieldset{border:0;padding:0;margin:20px 0 0;min-width:0}fieldset:disabled{opacity:.45}.measure-label{display:flex;justify-content:space-between;font-size:14px;margin-bottom:12px}output{font-weight:700}.range-ends{display:flex;justify-content:space-between;margin:3px 60px 0;font-size:12px;color:var(--muted)}.textbutton{border:0;padding:0;background:transparent;text-decoration:underline;color:inherit;font-size:14px}#calDone p{font-size:14px;color:var(--muted)}.result{background:var(--navy);color:#fff;border-radius:18px;padding:30px}.result .eyebrow{color:var(--lime)}.empty-size{font-size:82px;color:var(--lime);line-height:1.4}#resultEmpty p{color:#b8c0ce;font-size:14px;margin-bottom:28px}.result-bottom{border-top:1px solid #3e4758;padding-top:19px;color:#b8c0ce;font-size:12px;line-height:1.7}.size-line{display:flex;gap:23px;align-items:center;margin:24px 0}.size-line>span:first-child{font-size:94px;line-height:1;color:var(--lime);letter-spacing:-5px}.size-line>span:last-child{font-size:14px;line-height:1.7}.size-line small{color:#b8c0ce;font-size:12px}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.result-grid>div{background:#ffffff09;padding:17px;border:1px solid #ffffff15;border-radius:10px}.result-grid span{display:block;font-size:12px;color:#b8c0ce;margin-bottom:10px}.result-grid strong{font-size:25px;font-weight:500}.result-grid small{font-size:13px}.circ-row{display:flex;justify-content:space-between;gap:8px;font-size:13px;padding-top:22px}.circ-row>span{color:#b8c0ce}.result-note{font-size:12px;color:#ccd8b7;margin:18px 0}.side-guide{padding:30px 8px}.side-guide .eyebrow{font-size:11px;color:var(--muted);letter-spacing:1.4px}.side-guide>div{display:flex;gap:18px;margin-top:21px}.side-guide>div>span{font-size:12px;color:#88929f;padding-top:5px}.side-guide p{font-size:14px;margin:0;color:var(--muted)}.side-guide strong{color:#263147;font-weight:600}.guide{display:grid;grid-template-columns:1fr 1.5fr;gap:60px;margin:65px 0 50px;padding-top:35px;border-top:1px solid var(--line)}.guide h2{font-size:26px;line-height:1.3}.guide>div>p:last-child{font-size:14px;color:var(--muted);max-width:300px}.questions details{padding:18px 0;border-bottom:1px solid var(--line)}.questions details:first-child{padding-top:0}summary{font-size:15px;font-weight:600;cursor:pointer}.questions p{font-size:14px;color:var(--muted)}footer{max-width:1136px;margin:auto;padding:25px 0 32px;display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);align-items:center}footer>span:not(.brand){font-size:12px;color:var(--muted)}footer .brand{font-size:23px}label{font-size:14px}select,.number-wrap{width:100%;border:1px solid #cfd5df;border-radius:9px;background:white;margin:10px 0 12px;padding:15px;color:var(--navy)}#manualHelp{font-size:15px;color:var(--muted);margin-bottom:26px}#manualPanel .stephead{margin-bottom:30px}.number-wrap{display:flex;align-items:center}.number-wrap input{border:0;width:100%;min-width:0;font-size:24px;background:transparent;color:var(--navy)}.number-wrap span{color:var(--muted)}.error{font-size:13px;color:#a03632;min-height:20px;margin:0}.tip{background:#f0f3e9;border-radius:12px;padding:20px;margin:28px 0;font-size:14px}.tip p{margin:8px 0 0;color:var(--muted)}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:1200px){main,footer{margin-left:32px;margin-right:32px}.badge{white-space:normal;font-size:10px;text-align:center}}@media(max-width:760px){header{height:72px;padding:0 20px}.brand{font-size:25px}header>a:last-child{font-size:12px}main{margin:0;padding:28px 16px 0}.intro{margin-bottom:24px}.intro h1{font-size:34px;letter-spacing:-1.2px}.intro p:last-child{font-size:14px}.eyebrow{font-size:10px;letter-spacing:1.4px}.device-note{display:none}.workspace{grid-template-columns:1fr;gap:18px}[role=tabpanel]{padding:22px 18px}.tabs button{font-size:13px;padding:15px 4px}.stephead h2{font-size:16px}.stephead p{font-size:12px}.badge{max-width:85px;padding:6px}.result{padding:26px}.side-guide{padding:27px 12px 0}.guide{grid-template-columns:1fr;gap:26px;margin-top:42px}.guide>div>p:last-child{max-width:none}.guide h2{font-size:25px}footer{margin:0 20px;flex-wrap:wrap}footer>span:last-child{width:100%}.ring-stage{height:210px}}@media(prefers-reduced-motion:no-preference){button{transition:background .15s,box-shadow .15s}button:hover:not(:disabled){box-shadow:0 2px 8px #17203118}}

.seo-guide{margin:56px 0 0;padding:36px 40px;background:white;border:1px solid var(--line);border-radius:18px}.seo-guide h2{font-size:28px;line-height:1.3;margin:0 0 20px}.seo-guide h3{font-size:20px;line-height:1.4;margin:28px 0 10px;letter-spacing:-.3px}.seo-guide p{font-size:16px;line-height:1.8;color:var(--muted);max-width:85ch;margin:0 0 16px}.chart-reference{font-size:14px;color:var(--muted)}@media(max-width:760px){.seo-guide{margin-top:34px;padding:25px 20px}.seo-guide h2{font-size:25px}.seo-guide h3{font-size:19px}.intro h1{font-size:32px}}

header{gap:20px}header>a:nth-child(2){margin-left:auto;text-decoration:none;font-size:14px}.theme-toggle{display:flex;gap:8px;align-items:center;justify-content:center;min-height:44px;border:1px solid var(--line);border-radius:24px;background:#fff;color:var(--navy);padding:9px 15px;font-size:14px;white-space:nowrap}.theme-toggle span{font-size:19px}.top-info{max-width:1136px;margin:0 auto;padding:14px 0 0}.policy-nav{display:flex;gap:22px;flex-wrap:wrap;font-size:14px}.policy-nav a{text-underline-offset:4px;text-decoration-color:#8994a4}.top-info .policy-nav{justify-content:flex-end}footer{flex-wrap:wrap}footer .policy-nav{width:100%;padding-top:6px}.document-page{max-width:860px;padding-bottom:60px}.document-page article{padding:35px;background:#fff;border:1px solid var(--line);border-radius:18px;margin-top:24px}.document-page h1{font-size:38px;line-height:1.25}.document-page h2{font-size:22px;margin-top:30px}.document-page p{font-size:16px;line-height:1.8;color:var(--muted)}.document-page .lead{font-size:20px}.updated{font-size:14px!important}.back-link{font-size:14px;text-underline-offset:4px}.error-home{max-width:260px;text-decoration:none}.nearby{margin:18px 0;color:#dbe3f0}.nearby summary{font-size:14px}.nearby p{font-size:12px;line-height:1.6}.nearby table{width:100%;border-collapse:collapse;font-size:12px;margin-top:12px;text-align:left}.nearby th,.nearby td{padding:9px 4px;border-bottom:1px solid #ffffff24}.nearby .closest{color:var(--lime)}
html[data-theme=dark]{background:#0e1521;color:#e5ecf5;--navy:#e0e9f6;--muted:#adbace;--line:#344255}html[data-theme=dark] body{background:#0e1521}html[data-theme=dark] .tool,html[data-theme=dark] .seo-guide,html[data-theme=dark] .document-page article{background:#172232}html[data-theme=dark] .tabs{background:#101925}html[data-theme=dark] .tabs button[aria-selected=true]{background:#293b50;color:#f0f5fc}html[data-theme=dark] .square,html[data-theme=dark] select,html[data-theme=dark] .number-wrap,html[data-theme=dark] .theme-toggle{background:#223247;color:#edf2fa;border-color:#41526a}html[data-theme=dark] .primary{background:#d1ed91;color:#172031}html[data-theme=dark] .step,html[data-theme=dark] .tip{background:#27352a;color:#e1efc7;border-color:#43533c}html[data-theme=dark] .badge{background:#463b21;color:#f3df9e;border-color:#776538}html[data-theme=dark] .badge.ready{background:#293d22;color:#d1ed91;border-color:#516744}html[data-theme=dark] .side-guide strong{color:#e0e9f6}html[data-theme=dark] .ring-stage{background:radial-gradient(#40516a .8px,transparent .8px);background-size:12px 12px;border-color:#41526a}html[data-theme=dark] #ringCircle{border-color:#d1ed91;background:#d1ed9130}html[data-theme=dark] #calLine,html[data-theme=dark] #calLine:after{border-color:#e0e9f6}html[data-theme=dark] .result{background:#1e2e43;border:1px solid #41526a}html[data-theme=dark] .error{color:#ffaaa2}html[data-theme=dark] input[type=range]{accent-color:#d1ed91}html[data-theme=dark] .diameter-line{border-color:#d1ed9170}
@media(max-width:1200px){.top-info{margin:0 32px}}@media(max-width:760px){header{gap:12px;flex-wrap:wrap;height:auto;min-height:76px;padding:14px 20px}header>a:nth-child(2){font-size:12px}.theme-toggle{padding:8px 12px}.top-info{margin:0 20px}.top-info .policy-nav{justify-content:flex-start;gap:14px;font-size:13px}.document-page{padding:28px 16px 45px}.document-page article{padding:24px 20px}.document-page h1{font-size:30px}.document-page .lead{font-size:18px}footer .policy-nav{gap:16px;font-size:14px}}@media(max-width:380px){header>a:nth-child(2){display:none}.theme-toggle{margin-left:auto}}

.brand-mark{width:36px;height:40px;flex-shrink:0;color:#253653}footer .brand-mark{width:28px;height:31px}html[data-theme=dark] .brand-mark{color:#e0e9f6}.circle-size{display:block;width:100%;height:100%;overflow:hidden;pointer-events:none;fill:#263719;font-family:Arial,Helvetica,sans-serif}.circle-size #circleUnit{font-size:20px;font-weight:600;letter-spacing:2px}.circle-size #circleSize{font-size:34px;font-weight:700}html[data-theme=dark] .circle-size{fill:#e2f6bd}

.theme-toggle{width:44px;height:44px;min-width:44px;border-radius:50%;padding:0!important;flex-shrink:0}.theme-toggle span{font-size:23px}.cal-reference-label{display:block;margin-top:22px}.india-caption{display:block;margin-top:8px;font-size:12px!important;color:#b8c0ce}.india-reference{font-size:12px;color:#b8c0ce;line-height:1.6}.india-reference a{text-underline-offset:3px}.circle-size #circleSize{font-size:32px}

.chart-download{display:flex;align-items:center;gap:28px;justify-content:space-between;margin-top:32px;padding:26px 30px;border:1px solid var(--line);border-radius:16px;background:#fff}.chart-download h2{font-size:22px}.chart-download p{font-size:14px;color:var(--muted);max-width:650px;margin:10px 0 0}.chart-download .chart-print-tip{font-size:12px}.chart-download-button{flex-shrink:0;width:auto;margin:0;text-decoration:none;text-align:center;line-height:1.5;align-items:center}html[data-theme=dark] .chart-download{background:#172232}@media(max-width:760px){.chart-download{flex-direction:column;align-items:stretch;padding:23px 20px;gap:18px}.chart-download-button{width:100%}}
.conversion-section{margin-top:32px;padding:30px;border:1px solid var(--line);border-radius:18px;background:#fff}.conversion-section h2{font-size:24px}.conversion-section p{color:var(--muted);font-size:14px}.converter-fields{display:grid;grid-template-columns:1fr .65fr 1fr;gap:18px;margin-top:22px}.conversion-output{padding:22px;border-radius:12px;background:#f0f3e9}.conversion-output strong{font-size:24px}.conversion-output p{margin-bottom:0}.table-scroll{overflow-x:auto;margin-top:24px;border:1px solid var(--line);border-radius:10px}.table-scroll table{width:100%;border-collapse:collapse;white-space:nowrap;font-size:14px;text-align:left}.table-scroll th,.table-scroll td{padding:14px 12px;border-bottom:1px solid var(--line)}.table-scroll thead{background:#172031;color:white}.table-scroll caption{text-align:left;padding:14px;color:var(--muted)}.table-scroll tbody tr:nth-child(even){background:#17203106}.result .size-line{gap:16px;flex-wrap:wrap}.size-line>span:first-child{font-size:72px;letter-spacing:-3px}.result-grid strong{font-size:22px;overflow-wrap:anywhere}.result .micro,#copyStatus{font-size:12px;color:#b8c0ce}.result-action{background:#d1ed91;color:#172031;margin-bottom:14px}.result textarea{width:100%;min-height:170px;padding:12px;border-radius:8px;font:inherit}.result #resetReadings{min-height:44px}.result #country{font-size:14px}.conversion-section .micro{font-size:12px;line-height:1.8}html[data-theme=dark] .conversion-section{background:#172232}html[data-theme=dark] .conversion-output{background:#27352a}html[data-theme=dark] .table-scroll tbody tr:nth-child(even){background:#ffffff06}@media(max-width:760px){.conversion-section{padding:24px 20px}.converter-fields{grid-template-columns:1fr;gap:8px}.conversion-output strong{font-size:21px}.conversion-section h2{font-size:22px}}

/* Keep the measuring tool and fit summary balanced, with shared tips below. */
.workspace>aside{min-width:0}.workspace>.side-guide{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px 30px;padding:24px 28px;border:1px solid var(--line);border-radius:14px;margin:0;background:#fff}.workspace>.side-guide>.eyebrow{grid-column:1/-1;margin:0}.workspace>.side-guide>div{margin:0;gap:12px}.measurement-summary{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}.measurement-summary>div{padding:14px 12px;border:1px solid #ffffff20;border-radius:10px;background:#ffffff09}.measurement-summary span{display:block;color:#b8c0ce;font-size:12px;line-height:1.5;margin-bottom:8px}.measurement-summary strong{display:block;font-size:20px;white-space:nowrap;font-weight:600}.country-comparison .result-grid{margin-top:18px}.country-comparison{border-top:1px solid #ffffff24;border-bottom:1px solid #ffffff24;padding:17px 0;margin:20px 0}.result .size-line{margin:20px 0}.result #copyStatus:empty{display:none}html[data-theme=dark] .workspace>.side-guide{background:#172232}@media(min-width:761px){.workspace>.tool{position:static;align-self:stretch}.workspace>aside{align-self:stretch;display:flex}.workspace>aside>.result{width:100%;display:flex;flex-direction:column}.workspace>aside>.result>.result-bottom{margin-top:auto}.workspace>aside>.result>select{flex-shrink:0}}@media(max-width:760px){.workspace>.side-guide{grid-template-columns:1fr;padding:22px 20px;gap:18px}.measurement-summary strong{font-size:19px}.workspace{gap:18px}}
.language-picker{flex-shrink:0}.language-picker select{width:auto;max-width:145px;margin:0;padding:11px 30px 11px 12px;font-size:14px;min-height:44px}html[lang=hi]{font-family:Arial,"Noto Sans Devanagari",sans-serif}html[lang=hi] .eyebrow{letter-spacing:.5px}html:not([lang=en]) .badge{white-space:normal;text-align:center}html:not([lang=en]) .size-line>span:last-child{flex:1;min-width:120px}html:not([lang=en]) .measurement-summary{grid-template-columns:repeat(2,minmax(0,1fr))}html:not([lang=en]) .measurement-summary strong{font-size:18px}html:not([lang=en]) .intro h1{font-size:38px;line-height:1.2}html:not([lang=en]) .chart-download-button{max-width:300px;white-space:normal}@media(max-width:760px){header>a:nth-child(2){display:none}.language-picker{margin-left:auto}.language-picker select{max-width:125px;padding-left:9px;font-size:13px}html:not([lang=en]) .intro h1{font-size:30px}html:not([lang=en]) .stephead{flex-wrap:wrap}html:not([lang=en]) .stephead>div{flex:1;min-width:150px}html:not([lang=en]) .badge{margin-left:46px}html:not([lang=en]) .chart-download-button{max-width:none}.measurement-summary span{overflow-wrap:anywhere}}
.topic-links{display:flex;flex-wrap:wrap;gap:10px 20px;margin:0 0 24px;font-size:14px;line-height:1.5}.topic-links a{text-underline-offset:4px;padding:6px 0}.topic-links a:focus-visible{outline:3px solid #637eab}#international-title,#chart-title,#guide,#ringPanel{scroll-margin-top:20px}
.contact-footer{width:100%;margin:0;font-size:14px;line-height:1.6;color:var(--muted)}.contact-footer a{overflow-wrap:anywhere;text-underline-offset:4px}

/* Highlight the required first step in both themes without reducing the measuring area. */
.calibration-step{border:2px solid #9aba58;border-radius:14px;overflow:hidden;padding:0 16px 16px}
.calibration-step .calibration-heading{margin:0 -16px;padding:18px 16px;background:#d1ed91;color:#172031;flex-wrap:wrap;gap:12px}
.calibration-heading>div{flex:1;min-width:150px}
.calibration-heading h2{font-size:21px;font-weight:750;color:#172031}
.calibration-step .calibration-heading p{color:#344721;font-size:13px;line-height:1.55;margin-top:7px}
.calibration-step .calibration-heading .step{width:42px;height:42px;background:#172031;border-color:#172031;color:#d1ed91;font-size:17px}
.calibration-step .calibration-heading .badge{background:#172031;color:#fff;border-color:#172031;white-space:normal;margin-left:54px;font-size:12px}
.calibration-step .calibration-heading .badge.ready{background:#fff;color:#284415;border-color:#6b883d}
html[data-theme=dark] .calibration-step{border-color:#a6c965}
html[data-theme=dark] .calibration-heading h2{color:#172031}
@media(max-width:760px){.calibration-step{padding:0 12px 14px}.calibration-step .calibration-heading{margin:0 -12px;padding:16px 12px}.calibration-heading h2{font-size:19px}}