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:root{--red:#c82935;--red-dark:#a71e29;--red-light:#fff0f1;--ink:#202938;--muted:#687180;--line:#e6e8ed;--bg:#f7f8fa;--length:#cf2e3c;--width:#286c9b;--height:#92702a;--green:#24624c}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Mosha,Tahoma,Arial,sans-serif;font-size:16px;line-height:1.8}button,input,textarea{font:inherit}button,a,input,summary{ -webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:not-allowed}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid 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@media(max-width:1000px){.header-inner{gap:20px}.brand-sub{display:none}nav{gap:20px}.container{padding-inline:22px}.calculator-grid{grid-template-columns:1.05fr 1fr}.entry-panel{padding:22px}.guide-panel{padding:22px 16px}.section-sub{display:none}.intro h1{font-size:31px}.intro-note{padding:12px}.intro-note span{font-size:11px}.weight-results strong{font-size:22px}.weight-education{gap:25px;grid-template-columns:1fr 1.7fr}.education-cards article{padding:18px}.learn-section{gap:38px}.type-option{gap:8px;font-size:13px}.type-option .icon{width:22px;height:22px}}
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@media(max-width:370px){.brand-sub{display:none}.intro h1{font-size:26px}.type-option{font-size:10px}.type-option .icon{width:22px;height:22px}.entry-panel{padding-inline:13px}.dimensions{gap:6px}.weight-results strong{font-size:23px}.weight-results span{font-size:11px}.external-label{display:none}.section-label{gap:8px}.field label{font-size:13px}.field-help{font-size:12px}}
.guide-image:not(.box-source){width:80%;height:80%;position:absolute;top:10%;left:10%}
.intro-copy,.section-intro>p:last-child,.education-cards p,.advice-list li,.apps-description,.faq-list details p{font-size:16px}
.field-help,.guide-heading p,.field label,.weight-row>label:first-child,.unknown,.type-option,.dimension-switches button,.axis-help,.guide-tip,.weight-results span,.result-explanation,.copy-button,.faq-list summary,.policy-link,.app-links strong{font-size:14px}
.weight-notice,.bag-note{font-size:14px}.illustration-note,.comparison-note,.video-card>p,.guide-kicker{font-size:12px}
@media(max-width:760px){.type-options{grid-template-columns:repeat(3,minmax(0,1fr))}.type-option{font-size:14px;flex-direction:row;min-height:50px;gap:7px;padding:10px 6px}.type-option .icon{width:20px;height:20px}.weight-results span{font-size:13px}.intro-copy{font-size:15px}.guide-heading p,.axis-help,.guide-tip,.field-help{font-size:14px}.guide-panel{padding-bottom:18px}.weight-results strong{font-size:24px}.education-cards{grid-template-columns:1fr 1fr}.education-cards p{font-size:15px}.copy-help,.unit-help,.compatibility-note{font-size:13px}.pack-example strong small{font-size:13px}}
@media(max-width:370px){.type-option{font-size:13px}.weight-row{align-items:flex-start;flex-direction:column;gap:8px}.weight-results strong{font-size:22px}.education-cards{grid-template-columns:1fr}}
.intro{padding-block:25px 20px}.intro h1{font-size:30px}.intro-copy{font-size:14px;margin-top:2px}.section-sub{display:none}.entry-panel .dimensions{margin-top:20px}.guide-panel{padding-top:20px}.diagram{width:min(100%,330px)}.guide-heading h2{font-size:17px}.axis-help{font-size:14px;margin-block:9px}.shipment-tip{margin-top:7px;width:100%;max-width:390px;font-size:14px;border-top:1px solid var(--line)}.shipment-tip summary{list-style:none;display:flex;justify-content:space-between;gap:12px;padding:10px 0;color:var(--muted);cursor:pointer}.shipment-tip summary::-webkit-details-marker{display:none}.shipment-tip summary span{font-size:20px}.shipment-tip[open] summary span{transform:rotate(45deg)}.shipment-tip p{color:var(--muted);padding:0 0 9px;font-size:14px}.extra-help{padding-block:24px 32px}.help-section{border:1px solid var(--line);background:white;border-radius:11px;margin-bottom:9px;overflow:hidden}.help-section>summary{list-style:none;padding:14px 19px;display:flex;align-items:center;justify-content:space-between;gap:20px;cursor:pointer;font-size:14px;font-weight:700}.help-section>summary::-webkit-details-marker{display:none}.help-section>summary>span{font-size:21px;color:var(--muted);font-weight:400;line-height:1}.help-section[open]>summary{border-bottom:1px solid var(--line)}.help-section[open]>summary>span{transform:rotate(45deg);color:var(--red)}.help-section .container{padding-inline:20px}.help-section .weight-education,.help-section .learn-section,.help-section .faq-section{padding-block:23px;gap:25px}.help-section .packaging-section{padding-block:23px;border:0}.help-section .eyebrow{display:none}.help-section .weight-education{grid-template-columns:1fr}.help-section .section-intro h2{display:none}.help-section .section-intro>p:last-child{max-width:none;margin:0}.help-section .education-cards{margin:0}.help-section .section-top h2,.help-section .apps-content h2,.help-section .faq-section>div:first-child{display:none}.help-section .section-top{justify-content:flex-end}.help-section .packaging-grid{margin-top:17px;gap:25px}.help-section .apps-description{margin-top:0}.help-section .faq-section{display:block;border:0}.help-section .faq-list{margin:0}.help-section .faq-list details:last-child{border:0}.help-section .video-card video{max-height:280px}.weight-notice{padding:12px 17px;margin-top:12px}footer{padding-block:20px}.footer-brand .brand-sub{display:none}
@media(max-width:760px){.intro{padding-block:20px 16px}.intro h1{font-size:26px}.type-panel{padding:15px 13px}.guide-panel{padding-block:15px 7px}.diagram{width:220px}.guide-heading h2{font-size:16px}.dimension-switches button{padding:5px 14px}.axis-help{font-size:13px;margin:7px 0}.shipment-tip summary{font-size:13px;padding:8px 0}.entry-panel{padding-top:18px}.help-section>summary{padding:13px 15px}.help-section .container{padding-inline:15px}.extra-help{padding-block:18px 24px}.header-inner nav{gap:25px}.help-section .learn-section{gap:20px}.weight-notice{font-size:13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

.shipment-photo{margin-top:16px}.photo-picker{position:relative;display:flex;align-items:center;gap:9px;width:100%;padding:13px 12px;background:#fafbfc;border:1px dashed #cbd1db;border-radius:10px;font-size:14px;cursor:pointer}.photo-picker>.icon{width:21px;height:21px;color:var(--red);flex-shrink:0}.photo-picker>span{min-width:0}.photo-picker small{font-size:12px;color:var(--muted);margin-inline-start:auto;flex-shrink:0}.photo-picker:hover{background:var(--red-light);border-color:var(--red)}.photo-picker:focus-within{outline:2px solid var(--red);outline-offset:3px}.photo-input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.photo-preview{display:flex;align-items:center;gap:12px;margin-top:10px;padding:10px;border:1px solid var(--line);border-radius:10px}.photo-preview img{width:80px;height:80px;border-radius:7px;object-fit:contain;background:#f3f4f6;flex-shrink:0}.photo-preview>div{min-width:0}.photo-preview p{font-size:13px;overflow-wrap:anywhere;direction:ltr;text-align:right;color:var(--muted)}.photo-preview button{margin-top:5px;font-size:14px;min-height:38px}.share-photo-button{display:block;width:100%;border:1px solid var(--red);background:#fff;color:var(--red);border-radius:10px;font-size:14px;font-weight:700;padding:12px;margin-top:9px}.share-photo-button:hover:enabled{background:var(--red-light)}.share-photo-button:disabled{opacity:.55;cursor:default}

.weight-notice{background:#fff1f2;border-color:#efd2d6;color:#9e3e49;margin-top:16px}

.brand-full{min-width:0;flex-shrink:1}.brand-full .brand-name{font-size:22px;line-height:1.6}.brand-full .brand-sub{white-space:nowrap}@media(max-width:760px){.header-inner .brand-full{flex:1;gap:0;margin-inline-end:14px}.brand-full .brand-name{font-size:18px;line-height:1.5}.brand-full .brand-sub{display:none}}