/* Homepage calculator (September 2026 design). Scoped to .tsc. */
/* Undo site-wide element styles inside the calculator so its own design applies. */
.tsc :where(h1,h2,h3,h4){margin:revert;color:revert;line-height:revert;letter-spacing:revert;font-size:revert;font-weight:revert}
.tsc :where(p,ul,ol,li,table,figure,blockquote,dl,dd){margin:revert}
.tsc :where(ul,ol){padding-left:revert}
.tsc :where(table){width:revert;font-size:revert;line-height:revert;border-collapse:revert}
.tsc :where(th,td){padding:revert;border-bottom:revert;text-align:revert;vertical-align:revert;font-weight:revert;color:revert}
.tsc :where(thead th){background:revert;font-size:revert;text-transform:revert;letter-spacing:revert}
.tsc :where(strong){color:revert}
.tsc :where(li)::marker{color:revert}
.tsc{--ink:#172d27;--green:#205d49;--lime:#ddf993;--line:#dce4df;--muted:#52665e;--paper:#f5f7f4;--white:#fff;color:var(--ink);background:var(--white);font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;font-size:16px;line-height:1.6;isolation:isolate;text-align:left;overflow-wrap:break-word}.tsc *{box-sizing:border-box}.tsc [hidden]{display:none!important}.tsc h1,.tsc h2,.tsc h3,.tsc p{margin:0}.tsc a{color:inherit;text-underline-offset:4px}.tsc button,.tsc input,.tsc select{font:inherit}.tsc button,.tsc select,.tsc summary{cursor:pointer}.tsc button{color:inherit}.tsc :focus-visible{outline:3px solid #197252;outline-offset:4px}.tsc button:disabled{opacity:.5;cursor:not-allowed}.tsc-wrap{width:min(1240px,calc(100% - 96px));margin-inline:auto}.tsc-header{min-height:94px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:30px;padding:20px 48px}.tsc-brand{display:flex;align-items:center;gap:11px;font-size:22px;font-weight:750;letter-spacing:-1px;text-decoration:none;white-space:nowrap}.tsc-brand-light{font-weight:400}.tsc-brand-dot{color:#619641}.tsc-header nav{display:flex;gap:28px;font-size:14px;font-weight:550}.tsc-header nav a{text-decoration:none}.tsc-header nav a:hover{color:var(--green);text-decoration:underline}.tsc-header-cta{background:var(--ink);color:white!important;padding:11px 19px;border-radius:6px;text-decoration:none;font-size:14px;font-weight:600;white-space:nowrap}.tsc-header-cta span{margin-left:16px}.tsc-intro{display:flex;justify-content:space-between;align-items:center;padding-block:52px 37px;gap:28px}.tsc-eyebrow{font-size:12px;font-weight:650;letter-spacing:1.7px;line-height:1.5}.tsc-intro .tsc-eyebrow{display:flex;gap:9px;align-items:center}.tsc-eyebrow>span:empty{height:6px;width:6px;display:inline-block;border-radius:50%;background:var(--green)}.tsc h1{font-size:clamp(44px,4.5vw,66px);line-height:1.1;letter-spacing:-3px;font-weight:650;margin:15px 0}.tsc-lead{font-size:18px;color:var(--muted);line-height:1.65}.tsc-intro-note{border-left:1px solid var(--line);padding-left:35px;margin-right:25px;font-size:18px;line-height:1.5}.tsc-note-icon{display:block;font-size:40px;color:var(--green);line-height:1.1;margin-bottom:10px}.tsc-intro-note strong{font-weight:600}.tsc-small,.tsc-intro-note .tsc-small{font-size:13px;color:var(--muted);line-height:1.65}.tsc-intro-note .tsc-small{display:block;margin-top:13px}.tsc-workspace{display:grid;grid-template-columns:340px minmax(0,1fr);border:1px solid #cedbd2;border-radius:12px;box-shadow:0 7px 25px #18372a07;scroll-margin-top:20px;overflow:hidden}.tsc-inputs{background:var(--paper);padding:27px 25px}.tsc-panel-heading{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:24px}.tsc .tsc-panel-heading h2{font-size:19px;letter-spacing:-.5px}.tsc-text-button{border:0;background:transparent;font-size:13px!important;padding:4px 0;color:var(--muted)!important}.tsc-unit-row{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:23px;padding-bottom:19px;border-bottom:1px solid var(--line)}.tsc-unit-row label{font-size:13px;color:var(--muted)}.tsc .tsc-unit-row select{width:143px;height:36px;font-size:13px;padding:4px 8px;background:#fff}.tsc-field{margin-bottom:18px}.tsc-field label{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;margin-bottom:7px}.tsc-field-letter{font-size:11px;color:var(--green);font-weight:600;background:#e1ebe3;padding:0 5px;border-radius:3px}.tsc-input-wrap{display:flex;align-items:center;background:white;border:1px solid #cbd7ce;border-radius:5px;overflow:hidden;min-height:47px}.tsc-input-wrap:focus-within{border-color:var(--green);box-shadow:0 0 0 2px #205d4918}.tsc-input-wrap 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input:checked+span{background:#fff;box-shadow:0 1px 3px #173c191a}.tsc-segment input:focus-visible+span{outline:3px solid var(--green)}.tsc-advanced{border-top:1px solid var(--line);margin-top:7px}.tsc-advanced summary{display:flex;justify-content:space-between;align-items:center;padding:14px 0;font-size:14px;font-weight:600;list-style:none}.tsc-advanced summary::-webkit-details-marker{display:none}.tsc-advanced[open] summary span{transform:rotate(45deg)}.tsc-primary{background:var(--green);color:#fff!important;border:0;border-radius:5px;width:100%;padding:13px 17px;display:flex;justify-content:space-between;font-size:14px!important;font-weight:600!important;margin-top:5px;transition:background .15s}.tsc-primary:hover{background:#133f31}.tsc-auto-note{text-align:center;font-size:12px;color:var(--muted);margin-top:9px!important}.tsc-results{padding:27px 30px;background:white;min-width:0}.tsc-result-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px}.tsc-result-heading .tsc-eyebrow{font-size:11px;color:var(--muted);letter-spacing:1.3px}.tsc .tsc-result-heading h2{font-size:18px;letter-spacing:-.3px;margin-top:3px;font-weight:550}.tsc-live{display:flex;align-items:center;gap:6px;font-size:12px;white-space:nowrap;color:var(--green)}.tsc-live i{width:6px;height:6px;border-radius:50%;background:#39774a;box-shadow:0 0 0 3px #eaf4e9}.tsc-metrics{display:grid;grid-template-columns:1.05fr 1fr 1fr;gap:11px;margin-bottom:18px}.tsc-metric{border:1px solid var(--line);border-radius:6px;padding:15px 16px;min-width:0}.tsc-metric-main{background:var(--lime);border-color:var(--lime)}.tsc-metric>span{font-size:12px;color:#42554b;display:block}.tsc-metric strong{font-size:clamp(23px,2.5vw,34px);font-weight:600;line-height:1.35;letter-spacing:-1px;display:block;margin:5px 0;font-variant-numeric:tabular-nums}.tsc-metric em{font-size:15px;font-weight:400;font-style:normal;letter-spacing:0}.tsc-metric small{font-size:11px;color:#526257}.tsc-drawing{background-color:#f6f9f6;background-image:linear-gradient(#dae5dc66 1px,transparent 1px),linear-gradient(90deg,#dae5dc66 1px,transparent 1px);background-size:22px 22px;border:1px solid #e1e9e2;border-radius:7px;overflow:hidden}.tsc-drawing-heading,.tsc-drawing-footer{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:11px;color:#53665a;padding:15px 18px}.tsc-drawing-heading>span:first-child{letter-spacing:1.5px;font-size:10px;font-weight:600}.tsc-drawing-footer{padding:8px 18px 13px;font-size:10px}.tsc-drawing-footer>span:first-child{display:flex;align-items:center;gap:5px}.tsc-dot-green{width:6px;height:6px;background:var(--green);border-radius:50%;display:inline-block}#tsc-diagram{padding:0 10px;min-height:200px}#tsc-diagram svg{width:100%;height:auto;display:block;max-height:325px}.tsc-secondary-metrics{display:grid;grid-template-columns:.85fr 1.4fr 1fr;padding:18px 0;border-bottom:1px solid var(--line)}.tsc-secondary-metrics>div{padding-left:20px;border-left:1px solid var(--line)}.tsc-secondary-metrics>div:first-child{padding-left:0;border-left:0}.tsc-secondary-metrics span{font-size:11px;display:block;color:var(--muted)}.tsc-secondary-metrics strong{font-size:19px;font-weight:600;letter-spacing:-.5px}.tsc-check{padding:13px 14px;background:#eff5ec;border:1px solid #dce9d4;border-radius:5px;margin-top:16px;font-size:12px;line-height:1.6;color:#34533e}.tsc-check strong{font-weight:650;display:block}.tsc-check p{margin-top:3px}.tsc-check.tsc-warning{background:#fff8e9;border-color:#efdbb0;color:#754a16}.tsc-check ul{padding-left:17px;margin:7px 0}.tsc-detail-results{margin-top:11px}.tsc-detail-results summary{display:flex;justify-content:space-between;font-size:12px;font-weight:550;padding:9px 0;list-style:none}.tsc-detail-results .tsc-small{font-size:12px}.tsc-dim-list{margin:7px 0 12px;font-size:13px}.tsc-dim-list>div{display:flex;justify-content:space-between;gap:20px;padding:7px 0;border-bottom:1px solid var(--line)}.tsc-dim-list dd{font-weight:600;margin:0;white-space:nowrap}.tsc-actions{display:flex;gap:9px;margin-top:15px;flex-wrap:wrap}.tsc-actions button{font-size:12px!important;border:1px solid #cfdbd1;background:white;padding:9px 12px;border-radius:4px;font-weight:550}.tsc-actions button:first-child{background:var(--ink);color:white;border-color:var(--ink)}.tsc-actions button:hover{box-shadow:0 0 0 2px #dce8da}.tsc-result-note{font-size:11px;color:var(--muted);line-height:1.7;margin-top:15px!important}.tsc-table-scroll{overflow:auto;margin-block:15px}.tsc table{width:100%;border-collapse:collapse;font-size:12px}.tsc th,.tsc td{text-align:left;padding:8px;border-bottom:1px solid var(--line);white-space:nowrap}.tsc 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h3{font-size:19px;font-weight:600;letter-spacing:-.5px;line-height:1.4}.tsc-steps h3{margin:21px 0 10px}.tsc-steps p{font-size:15px;line-height:1.8;color:var(--muted)}.tsc-formula-section{background:var(--ink);color:#fff;padding-block:66px}.tsc-formula-grid{display:grid;grid-template-columns:1fr 1.12fr;gap:110px}.tsc-formula-section .tsc-eyebrow{font-size:10px;color:var(--lime);margin-bottom:20px;letter-spacing:1.5px}.tsc-formula-section h2{font-size:43px;line-height:1.15;letter-spacing:-1.6px}.tsc-formula-grid>div>p:not(.tsc-eyebrow){font-size:15px;color:#c5d4cb;line-height:1.8;margin-top:23px}.tsc-inline-link{display:inline-block;color:var(--lime)!important;text-decoration:none;font-size:14px;font-weight:600;margin-top:24px}.tsc-formulas>div{border-bottom:1px solid #426052;padding:0 0 17px;margin-bottom:17px}.tsc-formulas span{display:block;color:#a7bdaf;font-size:12px;margin-bottom:6px}.tsc-formulas code{font-family:Consolas,"Courier 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strong{font-size:16px}.tsc-secondary-metrics span{font-size:10px}.tsc-secondary-metrics{grid-template-columns:.8fr 1.25fr 1fr}.tsc-drawing-heading,.tsc-drawing-footer{padding-inline:10px;font-size:9px}.tsc-drawing-footer>span:last-child{max-width:135px;text-align:right}.tsc-drawing #tsc-diagram{padding:0;min-height:150px}.tsc-underbar{justify-content:center;font-size:11px}.tsc-underbar>span:not(:first-child){display:none}.tsc-steps,.tsc-formula-grid,.tsc-examples,.tsc-glossary,.tsc-reference{grid-template-columns:1fr}.tsc-steps{gap:25px}.tsc-steps h3{margin-top:12px}.tsc-steps article{padding-top:16px}.tsc-formula-section{padding-block:45px}.tsc-formula-grid{gap:33px}.tsc-formulas code{font-size:14px}.tsc-formula-section h2{font-size:36px}.tsc-example-top{display:flex}.tsc-example-top button{margin:0}.tsc-glossary{gap:27px}.tsc-reference{padding:27px 23px;gap:23px}.tsc-reference-values>div{display:flex}.tsc-reference-values strong{font-size:20px}.tsc-reference-values 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.tsc-eyebrow,.tsc-lead{display:none}.tsc-workspace{display:block;border:0;box-shadow:none;overflow:visible}.tsc-inputs{background:white;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:8px 20px}.tsc-inputs .tsc-field{margin:0}.tsc-inputs .tsc-field small,.tsc-advanced{display:none}.tsc-panel-heading{display:none}.tsc-unit-row{margin:0 0 5px;padding:0;border:0;justify-content:flex-start}.tsc-inputs input,.tsc-inputs select{padding:0;height:auto;font-size:12px;border:0;appearance:none;pointer-events:none}.tsc-input-wrap{border:0;min-height:0}.tsc-input-wrap input{padding:0}.tsc-inputs label{font-size:10px;margin:0}.tsc-results{padding:20px 0;border:0}.tsc-result-heading h2{font-size:16px}.tsc-metrics{margin-bottom:12px;break-inside:avoid}.tsc-metric strong{font-size:24px}.tsc-drawing{break-inside:avoid;print-color-adjust:exact;-webkit-print-color-adjust:exact}.tsc-drawing svg{max-height:260px!important}.tsc-check{break-inside:avoid}.tsc-detail-results{break-before:auto}.tsc-drawing-footer{font-size:9px}.tsc-result-note{font-size:10px}.tsc-detail-results .tsc-table-scroll{overflow:visible}.tsc table{font-size:10px}.tsc th,.tsc td{padding:4px}.tsc-detail-results[open] table{break-before:auto}.tsc-result-heading .tsc-live{display:none}}

.tsc-guide-nav{display:flex;gap:14px 22px;flex-wrap:wrap;align-items:center;padding-block:23px;border-bottom:1px solid var(--line)}.tsc-guide-nav span{font-size:10px;color:var(--muted);font-weight:650;letter-spacing:1px}.tsc-guide-nav a{font-size:12px;text-decoration:none;color:var(--green)}.tsc-guide-nav a:hover{text-decoration:underline}.tsc-planning{border-top:1px solid var(--line);padding-bottom:35px}.tsc-mistakes{padding-block:30px 55px}.tsc-mistakes table{font-size:14px;min-width:620px}.tsc-mistakes th,.tsc-mistakes td{white-space:normal;padding:17px 20px;vertical-align:top;line-height:1.8;width:33.33%}.tsc-mistakes thead{background:var(--paper)}.tsc-mistakes td{color:var(--muted)}.tsc-mistakes tbody th{font-weight:550}.tsc-history{border-top:1px solid var(--line);padding-block:55px 65px}.tsc-history .tsc-step-number{font-size:12px;letter-spacing:.7px}.tsc-history .tsc-steps a{color:var(--green)}@media(max-width:540px){.tsc-guide-nav{gap:12px 19px;padding-block:19px}.tsc-guide-nav span{flex-basis:100%}.tsc-mistakes th,.tsc-mistakes td{padding:12px}.tsc-mistakes table{font-size:13px}.tsc-history,.tsc-planning{padding-block:38px}.tsc-history .tsc-section-heading>p br{display:none}}@media print{.tsc-guide-nav{display:none!important}}

/* Search-intent guides and the two-flight planner; scoped to the homepage. */
.tsc .tsc-seo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 42px;margin:28px 0}
.tsc .tsc-seo-grid article{min-width:0}
.tsc .tsc-seo-section p{line-height:1.75;color:#4c5c54;max-width:90ch}
.tsc .tsc-seo-section p+p{margin-top:14px}
.tsc .tsc-seo-section h3{font-size:21px;line-height:1.35;margin:0 0 12px}
.tsc .tsc-seo-section a:not(.tsc-primary){text-decoration:underline;text-underline-offset:3px}
.tsc .tsc-seo-callout{padding:28px;background:#f1f6e9;border-left:3px solid #4d7154;border-radius:0 14px 14px 0;margin:26px 0}
.tsc .tsc-seo-section table{width:100%;border-collapse:collapse;font-size:14px}
.tsc .tsc-seo-section th,.tsc .tsc-seo-section td{padding:14px 16px;text-align:left;border-bottom:1px solid #e0e6de;vertical-align:top;white-space:normal}
.tsc .tsc-seo-section thead{background:#eff3ec}
.tsc .tsc-seo-section caption{text-align:left;font-weight:600;padding:14px 0;color:#304638}
.tsc .tsc-seo-section .tsc-table-scroll{margin:22px 0;overflow:auto}
.tsc .tsc-guide-nav{flex-wrap:wrap;white-space:normal;gap:14px 22px}
.tsc .tsc-intro h1{font-size:clamp(38px,4.8vw,66px);max-width:850px;line-height:1.07}
.tsc .tsc-intro>div:first-child{flex:1;min-width:0}.tsc .tsc-intro-note{flex:0 0 220px}.tsc .tsc-lead{max-width:72ch}
.tsc .tsc-landing-workspace{display:grid;grid-template-columns:300px minmax(0,1fr);gap:28px;margin:30px 0;border:1px solid #dce4d7;border-radius:20px;padding:26px;background:#fafcf8}
.tsc .tsc-landing-workspace>div{min-width:0}
.tsc .tsc-landing-form .tsc-field{margin:0 0 15px}
.tsc .tsc-landing-form input,.tsc .tsc-landing-form select{width:100%;min-height:44px;border:1px solid #bdcbbc;border-radius:7px;background:white;padding:9px 11px;color:#172d27;font-size:16px}
.tsc .tsc-landing-form label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
.tsc .tsc-landing-summary{display:flex;gap:18px;flex-wrap:wrap;padding:18px;background:#e7f3d7;border-radius:12px}
.tsc .tsc-landing-summary p{margin:0;font-size:13px}.tsc .tsc-landing-summary strong{display:block;font-size:23px;color:#172d27}
.tsc .tsc-seo-section .tsc-landing-summary p{margin:0}
.tsc .tsc-landing-diagram svg{width:100%;height:auto;display:block;background:white;border-radius:12px;margin-top:18px}
.tsc .tsc-landing-error{padding:18px;background:#fff0e9;border:1px solid #cb8e73;border-radius:12px}
.tsc .tsc-print-method{display:none}
@media(max-width:760px){.tsc .tsc-seo-grid,.tsc .tsc-landing-workspace{grid-template-columns:1fr}.tsc .tsc-landing-workspace{padding:18px;gap:20px}.tsc .tsc-seo-section th,.tsc .tsc-seo-section td{padding:11px;min-width:90px}.tsc .tsc-guide-nav{gap:12px 18px}.tsc .tsc-intro h1{font-size:40px}.tsc .tsc-seo-callout{padding:20px}}
@media print{.tsc .tsc-seo-section{display:none!important}.tsc .tsc-print-method{display:block!important;font-size:11px;border-top:1px solid #ccc;padding-top:12px}}
.tsc button{box-shadow:none;text-transform:none;letter-spacing:normal;line-height:inherit}
.tsc .tsc-brand svg{width:34px;height:34px;flex:0 0 34px}
.tsc code{background:transparent;padding:0}
.tsc h1,.tsc h2,.tsc h3{color:inherit}
.tsc select{appearance:auto}