:root{color:#172033;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;background:#f4f6f8;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;min-width:320px}body{background:#f4f6f8;min-width:320px;min-height:100vh;margin:0}button,input,select{font:inherit}button{-webkit-tap-highlight-color:transparent}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline-offset:3px;outline:3px solid #264ba747}:root{--ink:#172033;--muted:#677185;--line:#dfe4eb;--paper:#fff;--accent:#264ba7;--accent-dark:#17357d;--soft:#edf2ff}.top-actions{justify-content:flex-end;width:min(1040px,100% - 40px);margin:0 auto;padding-top:24px;display:flex}.saved-trigger{border:1px solid var(--line);min-height:42px;color:var(--ink);background:var(--paper);cursor:pointer;border-radius:999px;align-items:center;gap:12px;padding:7px 8px 7px 16px;font-weight:700;display:flex}.saved-trigger strong{color:#fff;background:var(--accent);border-radius:99px;place-items:center;min-width:28px;height:28px;padding:0 7px;font-size:13px;display:grid}.page-shell{width:min(1040px,100% - 40px);margin:auto;padding:10px 0 36px}.eyebrow{color:var(--accent);letter-spacing:.14em;text-transform:uppercase;margin-bottom:13px;font-size:12px;font-weight:850;display:block}.calculator-intro{text-align:center;flex-direction:column;align-items:center;gap:18px;padding:0 4px 30px;display:flex}.intro-copy{flex-direction:column;align-items:center;display:flex}.calculator-intro .eyebrow{margin-bottom:8px}.calculator-intro h1{color:#101827;letter-spacing:-.045em;margin:0;font-size:clamp(38px,5vw,50px);line-height:1}.intro-subtitle{color:var(--muted);margin:9px 0 0;font-size:15px;line-height:1.45}.intro-instructions{color:var(--muted);margin:0;font-size:14px;line-height:1.55}.intro-instructions span{display:block}.calculator{flex-direction:column;gap:14px;display:flex}.step-card{border:1px solid var(--line);background:var(--paper);border-radius:20px;overflow:hidden;box-shadow:0 8px 30px #1720330a}.step-copy{border-bottom:1px solid #edf0f4;align-items:flex-start;gap:18px;padding:25px 28px 20px;display:flex}.step-number{height:38px;color:var(--accent);background:var(--soft);border-radius:11px;flex:0 0 38px;place-items:center;font-size:12px;font-weight:900;display:grid}.step-copy h2{color:var(--ink);letter-spacing:-.025em;margin:0;font-size:22px;line-height:1.15}.step-copy p{color:var(--muted);margin:5px 0 0;font-size:14px;line-height:1.45}.step-body{background:#fff;grid-template-columns:minmax(0,1.18fr) minmax(290px,.82fr);align-items:center;min-height:285px;display:grid}.step-body--fields-only{min-height:0;display:block}.step-card--compact .step-copy{border-bottom:0;padding-bottom:12px}.step-card--compact .step-fields{width:min(100%,470px);padding-top:0}.diagram-frame{background:#fff;border-right:1px solid #edf0f4;justify-content:center;align-self:stretch;align-items:center;min-width:0;min-height:285px;margin:0;padding:34px;display:flex}.diagram-frame img{object-fit:contain;object-position:center;filter:drop-shadow(0 8px 13px #17203314);width:min(92%,680px);height:auto;max-height:235px;display:block}.step-fields{width:100%;padding:28px}.field,.field-pair{width:100%}.field{text-align:left;flex-direction:column;gap:8px;display:flex}.field+.field{margin-top:16px}.field-heading{color:var(--ink);justify-content:space-between;align-items:center;gap:12px;font-size:13px;font-weight:800;display:flex}.field-heading small{color:#8a94a7;text-transform:uppercase;font-size:11px;font-weight:700}.field input,.field select,select{width:100%;height:52px;color:var(--ink);background:#fff;border:1px solid #cfd6e0;border-radius:11px;outline:0;padding:0 15px;transition:border-color .16s,box-shadow .16s}.field input:focus,.field select:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 4px #264ba71a}.field input::placeholder{color:#a1a9b7}.input-shell{display:block;position:relative}.input-shell input{padding-right:52px}.unit{color:#8a94a7;pointer-events:none;font-size:12px;font-weight:800;position:absolute;top:50%;right:15px;transform:translateY(-50%)}.field-pair{grid-template-columns:1fr 1fr;gap:12px;display:grid}.field-pair .field+.field{margin-top:0}.direction-fieldset{border:0;margin:22px 0 0;padding:0}.direction-fieldset legend{color:var(--ink);margin-bottom:8px;font-size:13px;font-weight:800}.segmented-control{background:#eef1f5;border-radius:12px;grid-template-columns:1fr 1fr;gap:6px;padding:5px;display:grid}.segmented-control button{color:#5f697d;cursor:pointer;background:0 0;border:0;border-radius:8px;min-height:43px;font-size:12px;font-weight:800}.segmented-control button.active{color:#fff;background:var(--accent);box-shadow:0 4px 10px #264ba738}.error-message{color:#9c2e25;background:#fff5f4;border:1px solid #f2c8c4;border-radius:13px;flex-direction:column;gap:3px;padding:16px 20px;display:flex}.error-message span{font-size:14px}.calculate-bar{color:#fff;background:#101827;border-radius:18px;justify-content:space-between;align-items:center;gap:28px;margin-top:6px;padding:25px 28px;display:flex;box-shadow:0 16px 35px #10182729}.calculate-bar>div{flex-direction:column;gap:2px;display:flex}.calculate-bar>div>span{font-size:18px;font-weight:850}.calculate-bar small{color:#aeb7c8}.primary-button,.ghost-button{cursor:pointer;border-radius:11px;min-height:50px;padding:0 20px;font-weight:800;transition:transform .15s,background .15s}.primary-button{color:#fff;background:var(--accent);border:0}.primary-button:hover{background:var(--accent-dark);transform:translateY(-1px)}.primary-button:disabled{opacity:.45;cursor:not-allowed;transform:none}.calculate-bar .primary-button{background:#4168c8;justify-content:center;align-items:center;gap:28px;min-width:245px;display:flex}.ghost-button{border:1px solid var(--line);color:var(--ink);background:#fff}.result-panel{color:#fff;background:#101827;border-radius:22px;margin-top:20px;padding:38px;box-shadow:0 18px 45px #1018272e}.result-heading{margin-bottom:28px}.result-heading .eyebrow{color:#8ca9ef}.result-heading h2{margin:0;font-size:30px}.result-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.result-grid>div,.single-result{background:#182235;border:1px solid #344054;border-radius:15px;flex-direction:column;gap:10px;padding:24px;display:flex}.result-grid span,.single-result span{color:#aeb7c8;font-size:13px;font-weight:750}.result-grid strong,.single-result strong{letter-spacing:-.04em;font-size:clamp(34px,6vw,50px)}.result-grid strong small,.single-result strong small{color:#8ca9ef;letter-spacing:0;font-size:16px}.result-actions{gap:10px;margin-top:20px;display:flex}.seo-guide{border:1px solid var(--line);background:var(--paper);border-radius:22px;margin-top:56px;padding:44px;box-shadow:0 8px 30px #1720330a}.guide-heading{max-width:720px}.guide-heading .eyebrow{margin-bottom:8px}.guide-heading h2,.faq-block h2{color:var(--ink);letter-spacing:-.035em;margin:0;font-size:clamp(26px,4vw,34px);line-height:1.12}.guide-heading>p{color:var(--muted);margin:14px 0 0;font-size:15px;line-height:1.7}.guide-grid{grid-template-columns:repeat(3,1fr);gap:12px;margin-top:30px;display:grid}.guide-grid article{background:#fafbfc;border:1px solid #e7ebf1;border-radius:15px;padding:22px}.guide-grid article>span{color:var(--accent);letter-spacing:.08em;font-size:11px;font-weight:900}.guide-grid h3{color:var(--ink);margin:10px 0 8px;font-size:17px}.guide-grid p{color:var(--muted);margin:0;font-size:13px;line-height:1.6}.faq-block{margin-top:42px}.faq-block h2{margin-bottom:18px;font-size:25px}.faq-block details{border-top:1px solid var(--line)}.faq-block details:last-child{border-bottom:1px solid var(--line)}.faq-block summary{color:var(--ink);cursor:pointer;padding:18px 34px 18px 0;font-size:14px;font-weight:800;list-style:none;position:relative}.faq-block summary::-webkit-details-marker{display:none}.faq-block summary:after{content:"+";color:var(--accent);font-size:22px;font-weight:500;position:absolute;top:50%;right:4px;transform:translateY(-50%)}.faq-block details[open] summary:after{content:"−"}.faq-block details p{max-width:780px;color:var(--muted);margin:-3px 0 18px;font-size:14px;line-height:1.65}footer{border-top:1px solid var(--line);color:#7a8497;grid-template-columns:1fr auto;align-items:center;gap:22px;margin-top:52px;padding:28px 4px 0;font-size:12px;display:grid}footer p{text-align:center;margin:0}footer a{color:var(--accent);justify-self:end;font-weight:800;text-decoration:none}.drawer-backdrop,.modal-backdrop{z-index:30;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#10182780;position:fixed;inset:0}.drawer-backdrop{justify-content:flex-end;display:flex}.saved-drawer{background:#fff;width:min(440px,100%);height:100%;padding:32px;overflow-y:auto;box-shadow:-20px 0 50px #10182733}.drawer-heading{justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:30px;display:flex}.drawer-heading h2,.save-dialog h2{color:var(--ink);margin:0;font-size:30px}.close-button{border:1px solid var(--line);width:40px;height:40px;color:var(--ink);cursor:pointer;background:#fff;border-radius:50%;font-size:25px}.empty-state{text-align:center;border:1px dashed #cfd6e0;border-radius:15px;padding:34px 22px}.empty-state strong{color:var(--ink)}.empty-state p{color:var(--muted);margin:6px 0 0;font-size:14px}.saved-list{flex-direction:column;gap:10px;display:flex}.saved-wheel{border:1px solid var(--line);border-radius:14px;justify-content:space-between;gap:15px;padding:18px;display:flex}.saved-wheel strong,.saved-wheel span{display:block}.saved-wheel span{color:var(--muted);margin-top:3px;font-size:13px}.saved-wheel p{color:var(--accent);margin:12px 0 0;font-size:13px;font-weight:800}.delete-button{color:#b43b32;cursor:pointer;background:0 0;border:0;align-self:flex-start;font-size:12px;font-weight:800}.modal-backdrop{place-items:center;padding:20px;display:grid}.save-dialog{background:#fff;border-radius:20px;width:min(440px,100%);padding:30px;box-shadow:0 24px 60px #1018273d}.save-dialog h2{margin-bottom:24px}.dialog-actions{grid-template-columns:1fr 1fr;gap:9px;margin-top:24px;display:grid}@media (width<=940px){.top-actions,.page-shell{width:min(100% - 24px,1040px)}.top-actions{padding-top:16px}.page-shell{padding-top:10px}.calculator-intro{gap:16px;padding-bottom:24px}.calculator-intro h1{font-size:38px}.intro-subtitle{font-size:14px}.step-copy{padding:20px 18px 16px}.step-copy h2{font-size:19px}.step-body{grid-template-columns:1fr;min-height:0}.diagram-frame{border-bottom:1px solid #edf0f4;border-right:0;height:230px;min-height:0;padding:18px}.diagram-frame img{object-fit:contain;width:min(94%,680px);height:auto;max-height:194px}.step-fields{padding:20px 18px}.field-pair{grid-template-columns:1fr}.field-pair .field+.field{margin-top:4px}.calculate-bar{flex-direction:column;align-items:stretch;padding:22px}.calculate-bar .primary-button{width:100%;min-width:0}.result-panel{padding:26px 20px}.result-grid{grid-template-columns:1fr}.result-actions{flex-direction:column}.seo-guide{margin-top:38px;padding:28px 20px}.guide-grid{grid-template-columns:1fr}.faq-block{margin-top:34px}footer{text-align:center;grid-template-columns:1fr}footer a{justify-self:center}.saved-drawer{padding:24px 18px}}@media (width<=430px){.segmented-control{grid-template-columns:1fr}.diagram-frame{height:205px}.diagram-frame img{height:170px}.dialog-actions{grid-template-columns:1fr}}