:root{--tool-navy:#102a43;--tool-blue:#137caa;--tool-blue-dark:#075c87;--tool-green:#168260;--tool-mint:#e8f7f1;--tool-sky:#edf8fc;--tool-orange:#d96d1e;--tool-red:#bf3f45;--tool-line:#d8e5eb;--tool-muted:#637786}
.tool-page{background:#f5f9fb;color:#263746}
.tool-page button,.tool-page input,.tool-page select{font:inherit}
.tool-shell{width:min(980px,calc(100% - 32px));margin:auto}
.tool-breadcrumbs{display:flex;gap:8px;padding:18px 0 12px;font-size:12px;color:var(--tool-muted)}
.tool-hero{padding:28px 0 34px;text-align:center}
.tool-kicker{display:inline-flex;align-items:center;gap:7px;margin:0 0 10px;color:var(--tool-blue);font-size:12px;font-weight:800;letter-spacing:.08em}
.tool-hero h1{margin:0;color:var(--tool-navy);font-size:clamp(29px,6vw,46px);line-height:1.35;letter-spacing:-.035em}
.tool-lead{max-width:670px;margin:14px auto 0;color:var(--tool-muted);font-size:15px}
.tool-trust{display:flex;justify-content:center;gap:16px;margin:18px 0 0;padding:0;list-style:none;color:#48616f;font-size:12px}
.calculator{margin:0 auto 40px;padding:24px;border:1px solid var(--tool-line);border-radius:20px;background:#fff;box-shadow:0 12px 35px rgba(25,70,94,.09)}
.calculator-head{display:flex;justify-content:space-between;gap:16px;align-items:start;margin-bottom:18px}
.calculator-head h2{margin:0;color:var(--tool-navy);font-size:21px}
.calculator-head p{margin:5px 0 0;color:var(--tool-muted);font-size:12px}
.product-list{display:grid;gap:14px}
.product-input-card{position:relative;padding:18px;border:1px solid var(--tool-line);border-radius:14px;background:#fbfdfe}
.product-card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:13px}
.product-card-head strong{display:flex;align-items:center;gap:8px;color:var(--tool-navy)}
.product-letter{display:grid;place-items:center;width:28px;height:28px;border-radius:9px;background:var(--tool-blue);color:#fff;font-size:13px}
.field-grid{display:grid;grid-template-columns:1.35fr 1fr .85fr .8fr;gap:10px}
.field{display:grid;gap:6px}
.field label{color:#425b69;font-size:12px;font-weight:800}
.field input,.field select{width:100%;min-height:49px;padding:10px 12px;border:1px solid #bdcfd8;border-radius:10px;background:#fff;color:var(--tool-navy);font-size:16px;outline:0}
.field input:focus,.field select:focus{border-color:var(--tool-blue);box-shadow:0 0 0 3px rgba(19,124,170,.13)}
.field .input-affix{position:relative}
.field .input-affix input{padding-right:35px}
.field .input-affix span{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--tool-muted);font-size:13px}
.remove-product{border:0;background:transparent;color:var(--tool-muted);font-size:12px;font-weight:700}
.tool-actions{display:flex;gap:10px;margin-top:14px}
.secondary-button,.reset-button,.primary-button{min-height:48px;border-radius:11px;font-weight:800;cursor:pointer}
.secondary-button{flex:1;border:1px dashed #83b5ca;background:#f2fbff;color:var(--tool-blue-dark)}
.reset-button{border:0;background:#eef2f4;color:#5e7180;padding:0 18px}
.primary-button{width:100%;margin-top:16px;border:0;background:linear-gradient(135deg,var(--tool-blue),var(--tool-blue-dark));color:#fff;font-size:16px;box-shadow:0 7px 16px rgba(13,103,145,.2)}
.result-panel{margin-top:20px;border:1px solid #acd8c8;border-radius:15px;background:var(--tool-mint);overflow:hidden}
.result-empty{padding:24px;text-align:center;color:#577269;font-size:13px}
.result-summary{padding:20px;text-align:center}
.result-badge{display:inline-block;padding:5px 11px;border-radius:999px;background:var(--tool-green);color:#fff;font-size:11px;font-weight:900}
.result-summary h2{margin:10px 0 3px;color:#105f47;font-size:24px}
.result-summary p{margin:0;color:#476b60;font-size:13px}
.result-list{display:grid;gap:1px;background:#cbe3da;border-top:1px solid #cbe3da}
.result-row{display:grid;grid-template-columns:1fr auto;gap:12px;padding:13px 16px;background:#fff}
.result-row.is-best{background:#f0faf6}
.result-row b{color:var(--tool-navy);font-size:13px}
.result-row span{color:var(--tool-muted);font-size:12px}
.result-row strong{align-self:center;color:var(--tool-navy);font-size:16px}
.tool-content{margin:44px auto 70px}
.tool-content section{margin:36px 0}
.tool-content h2{margin:0 0 13px;color:var(--tool-navy);font-size:24px}
.tool-content h3{color:var(--tool-navy);font-size:17px}
.tool-content p,.tool-content li{color:#526a78;font-size:14px}
.example-box,.formula-box{padding:18px 20px;border-radius:13px;background:#fff;border:1px solid var(--tool-line)}
.formula-box{border-left:5px solid var(--tool-blue)}
.faq-list details{margin:10px 0;border:1px solid var(--tool-line);border-radius:11px;background:#fff}
.faq-list summary{padding:15px 17px;cursor:pointer;color:var(--tool-navy);font-size:14px;font-weight:800}
.faq-list details p{margin:0;padding:0 17px 17px}
.related-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
.related-tool{display:block;padding:18px;border:1px solid var(--tool-line);border-radius:13px;background:#fff}
.related-tool b{display:block;color:var(--tool-navy);font-size:14px}
.related-tool span{color:var(--tool-blue);font-size:12px;font-weight:800}
.tool-note{margin-top:12px;color:var(--tool-muted);font-size:11px}
.mobile-result-bar{display:none}
@media(max-width:680px){.tool-shell{width:min(100% - 22px,980px)}
.tool-hero{padding:18px 0 24px}
.tool-lead{font-size:14px;text-align:left}
.tool-trust{gap:9px;flex-wrap:wrap}
.calculator{padding:14px;margin-bottom:28px;border-radius:16px}
.calculator-head{display:block}
.field-grid{grid-template-columns:1fr 1fr}
.field.name-field{grid-column:1/-1}
.product-input-card{padding:14px}
.tool-actions{position:sticky;bottom:8px;z-index:4;padding:7px;border-radius:13px;background:rgba(255,255,255,.92);box-shadow:0 5px 20px rgba(20,57,76,.15);backdrop-filter:blur(8px)}
.related-tools{grid-template-columns:1fr}
.result-summary h2{font-size:21px}
.tool-content{margin-top:32px}
.tool-content h2{font-size:21px}}
.discount-form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.discount-block{padding:16px;border:1px solid var(--tool-line);border-radius:13px;background:#fbfdfe}
.discount-block h3{margin:0 0 12px;color:var(--tool-navy);font-size:15px}
.discount-fields{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.discount-switch{display:flex;gap:8px}
.discount-switch label{flex:1}
.discount-switch input{position:absolute;opacity:0}
.discount-switch span{display:grid;place-items:center;min-height:45px;border:1px solid var(--tool-line);border-radius:9px;background:#fff;color:var(--tool-muted);font-size:13px;font-weight:800}
.discount-switch input:checked+span{border-color:var(--tool-blue);background:var(--tool-sky);color:var(--tool-blue-dark)}
.breakdown{display:grid;gap:8px;padding:17px}
.breakdown div{display:flex;justify-content:space-between;gap:20px;color:#47645a;font-size:13px}
.breakdown div:last-child{padding-top:9px;border-top:1px solid #b9dace;color:#105f47;font-size:17px;font-weight:900}
.savings{color:var(--tool-red)!important}
.tools-hub{padding:28px 0 70px}
.tools-hub-head{text-align:center;margin:20px auto 32px}
.tools-hub-head h1{margin:0;color:var(--tool-navy);font-size:clamp(30px,5vw,44px)}
.tools-hub-head p{color:var(--tool-muted)}
.hub-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.hub-card{display:flex;flex-direction:column;padding:24px;border:1px solid var(--tool-line);border-radius:18px;background:#fff;box-shadow:0 8px 25px rgba(25,70,94,.07)}
.hub-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:15px;background:var(--tool-sky);font-size:25px}
.hub-card h2{margin:17px 0 8px;color:var(--tool-navy);font-size:19px}
.hub-card p{flex:1;color:var(--tool-muted);font-size:13px}
.hub-card b{color:var(--tool-blue);font-size:13px}
@media(max-width:680px){.discount-form,.discount-fields,.hub-grid{grid-template-columns:1fr}
.hub-card{padding:20px}}
.paper-field-grid{grid-template-columns:1.35fr 1fr 1fr 1fr}.paper-tip{display:flex;gap:10px;margin:0 0 17px;padding:12px 14px;border-radius:11px;background:var(--tool-sky);color:#416779;font-size:12px}.paper-tip b{color:var(--tool-blue-dark)}
@media(max-width:680px){.paper-field-grid{grid-template-columns:1fr 1fr}.paper-field-grid .name-field{grid-column:1/-1}}
.tool-thumbnail{margin:0 0 28px;border-radius:18px;overflow:hidden;background:#eaf4f7;box-shadow:0 10px 28px rgba(14,49,91,.12)}.tool-thumbnail img{display:block;width:100%;height:auto;object-fit:contain}.hub-card.has-image{padding-top:0;overflow:hidden}.hub-card-thumb{display:block;width:calc(100% + 48px);height:auto;margin:0 -24px 4px;object-fit:contain}.home-tool-thumb{display:block;width:calc(100% + 44px);height:auto;margin:-22px -22px 16px;object-fit:contain}
@media(max-width:680px){.tool-thumbnail{margin-bottom:20px;border-radius:13px}.hub-card-thumb{width:calc(100% + 40px);height:auto;margin:0 -20px 4px}.home-tool-thumb{height:auto}}