.ct-page { background: #eff2ed; color: #1e3d31; }
.ct-main { padding-top: 12px; }
.ct-skip { position: absolute; z-index: 20; top: -80px; left: 12px; padding: 10px 14px; background: #fffef9; }
.ct-skip:focus { top: 8px; }
.ct-intro { max-width: 790px; margin: 12px 0 22px; }
.ct-breadcrumb { margin: 0 0 8px; color: #52695b; font-size: .88rem; }
.ct-intro h1 { margin: 0; font-family: Inter, ui-sans-serif, system-ui, sans-serif; font-size: clamp(2rem, 4.5vw, 3.1rem); font-weight: 780; line-height: 1.08; letter-spacing: -.045em; }
.ct-intro > p:last-child { max-width: 68ch; margin: 10px 0 0; color: #425b4c; font-size: 1rem; line-height: 1.55; }
.ct-workspace { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(290px, .78fr); grid-template-areas: "sheet answer"; gap: 18px; align-items: start; }
.ct-answer { grid-area: answer; position: sticky; top: 12px; min-width: 0; padding: 21px 23px 23px; color: #f4f6ee; background: #214537; border: 1px solid #173829; border-radius: 8px; }
.ct-answer-kicker { margin: 0 0 4px; color: #c9dac2; font-size: .82rem; font-weight: 700; }
.ct-answer h2 { margin: 0; font-size: 1.33rem; line-height: 1.22; letter-spacing: -.02em; }
.ct-status { min-height: 3.2em; margin: 10px 0 15px; color: #dae5d6; font-size: .86rem; line-height: 1.48; }
.ct-prime { padding: 12px 0 15px; border-top: 1px solid #71907a; border-bottom: 1px solid #71907a; }
.ct-prime-label { display: block; color: #d7e5d0; font-size: .84rem; }
.ct-prime strong { display: block; color: #f1d28e; font-size: clamp(3.25rem, 6vw, 4.9rem); font-variant-numeric: tabular-nums; line-height: 1.06; letter-spacing: -.06em; }
.ct-prime small { display: block; color: #d1dfca; line-height: 1.4; }
.ct-metrics { margin: 8px 0 13px; }
.ct-metrics div { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 9px 0; border-bottom: 1px solid #557563; }
.ct-metrics dt { color: #d9e6d4; font-size: .83rem; }
.ct-metrics dd { margin: 0; color: #fff; font-weight: 760; font-variant-numeric: tabular-nums; text-align: right; }
.ct-answer-note { margin: 13px 0; color: #d5e1d1; font-size: .81rem; line-height: 1.48; }
.ct-answer button { min-height: 40px; padding: 9px 13px; border: 1px solid #d9e7d1; border-radius: 5px; color: #173829; background: #f8f7ee; font-weight: 750; }
.ct-answer button:disabled { cursor: not-allowed; opacity: .55; }
.ct-copy-status { display: block; min-height: 1.2em; margin-top: 7px; color: #e0ead9; font-size: .78rem; }
.ct-copy-fallback { width: 100%; margin-top: 9px; padding: 8px; border-radius: 4px; font-size: .8rem; }
.ct-sheet { grid-area: sheet; min-width: 0; background: #fffef9; border: 1px solid #cddacf; border-left: 5px solid #c69a48; border-radius: 4px 9px 9px 4px; }
.ct-sheet-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; padding: 20px 21px 13px; }
.ct-sheet-head h2 { margin: 0 0 4px; font-size: 1.24rem; letter-spacing: -.025em; }
.ct-sheet-head p { max-width: 49ch; margin: 0; color: #52695b; font-size: .85rem; line-height: 1.48; }
.ct-add-group { flex: none; min-height: 38px; padding: 7px 10px; border: 1px solid #276349; border-radius: 5px; color: #17472e; background: #f2f8ef; font-size: .82rem; font-weight: 740; }
.ct-settings { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; padding: 14px 21px 16px; border-top: 1px solid #d8e1d8; background: #f7f9f5; }
.ct-settings label, .ct-group-fields label, .ct-group-name { min-width: 0; color: #244638; font-size: .78rem; font-weight: 740; }
.ct-settings label span, .ct-group-fields label span, .ct-group-name span { color: #607466; font-weight: 520; }
.ct-settings input, .ct-settings select, .ct-group-fields input, .ct-group-fields select, .ct-group-name input { display: block; width: 100%; min-width: 0; height: 42px; margin-top: 5px; padding: 8px 9px; border: 1px solid #bdcfc1; border-radius: 4px; color: #19382a; background: #fff; font: inherit; font-size: 16px; }
.ct-settings small { display: block; margin-top: 4px; color: #5c7062; font-size: .73rem; font-weight: 500; line-height: 1.4; }
.ct-unit-note { grid-column: 1 / -1; margin: -4px 0 0; color: #52695b; font-size: .78rem; line-height: 1.45; }
.ct-unit-changed { color: #8a5525; font-weight: 700; }
.ct-group-list { padding: 0 21px; }
.ct-group { padding: 16px 0 17px; border-top: 1px solid #d8e1d8; }
.ct-group-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; }
.ct-group-name { flex: 1; max-width: 360px; }
.ct-remove { border: 0; border-bottom: 1px solid #829287; border-radius: 0; padding: 3px 1px; color: #52695b; background: none; font-size: .77rem; font-weight: 650; }
.ct-remove:disabled { visibility: hidden; }
.ct-group-fields { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px 10px; margin-top: 11px; }
.ct-group-fields [hidden] { display: none !important; }
.ct-group-fields input::placeholder { color: #869188; font-size: .8rem; }
.ct-row-result { margin: 11px 0 0; padding: 9px 10px; color: #355943; background: #edf3eb; border-left: 3px solid #86a07f; font-size: .81rem; font-variant-numeric: tabular-nums; line-height: 1.45; }
.ct-row-result[aria-invalid="true"] { color: #803b29; background: #fff2e8; border-color: #cb805f; }
.ct-error { margin: 0 21px 12px; padding: 9px 11px; color: #803b29; background: #fff2e8; border: 1px solid #e3b49d; border-radius: 4px; }
.ct-error[hidden] { display: none; }
.ct-actions { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; padding: 16px 21px 20px; border-top: 1px solid #d8e1d8; }
.ct-actions button { min-height: 40px; padding: 8px 3px; border: 0; color: #236248; background: none; font-weight: 730; }
.ct-actions .ct-calculate { padding: 9px 14px; border-radius: 5px; color: #fff; background: #286b4e; }
.ct-explainer { display: grid; grid-template-columns: minmax(220px, .66fr) 1fr; gap: 24px; margin-top: 18px; padding: 19px 22px; border: 1px solid #cddacf; background: #fffef9; }
.ct-explainer h2 { margin: 0 0 6px; font-size: 1.2rem; }
.ct-explainer p { margin: 0; color: #52695b; font-size: .85rem; line-height: 1.55; }
.ct-explainer ol { margin: 0; padding-left: 21px; }
.ct-explainer li { padding: 3px 0 7px 4px; color: #244638; font-size: .86rem; line-height: 1.5; }
.ct-figure { margin: 18px 0 0; padding: 11px 16px; border: 1px solid #cddacf; background: #f7f8f3; }
.ct-figure img { display: block; width: 100%; height: auto; }
.ct-figure figcaption { margin-top: 5px; color: #52695b; font-size: .77rem; line-height: 1.45; }
.ct-content, .ct-faq { max-width: 850px; padding-top: 25px; }
.ct-content h2, .ct-faq h2 { margin: 0 0 9px; font-size: 1.4rem; }
.ct-content p { max-width: 76ch; line-height: 1.62; }
.ct-source-note { padding-left: 13px; border-left: 3px solid #c69a48; color: #52695b; font-size: .83rem; }
.ct-faq details { padding: 13px 0; border-top: 1px solid #c7d5c9; }
.ct-faq details:last-child { border-bottom: 1px solid #c7d5c9; }
.ct-faq summary { min-height: 28px; cursor: pointer; color: #244638; font-weight: 750; }
.ct-faq details p { max-width: 76ch; margin-bottom: 0; color: #425b4c; line-height: 1.58; }
.ct-page :is(a, button, input, select, summary):focus-visible { outline: 3px solid #d39e3d; outline-offset: 3px; }
.ct-page button:hover:not(:disabled) { filter: brightness(.95); }
@media (max-width: 820px) { .ct-workspace { grid-template-columns: minmax(0, 1fr); grid-template-areas: "answer" "sheet"; } .ct-answer { position: static; } .ct-status { min-height: 0; } .ct-explainer { grid-template-columns: 1fr; gap: 10px; } }
@media (max-width: 540px) { .ct-intro h1 { font-size: 2.15rem; } .ct-intro > p:last-child { font-size: .94rem; } .ct-answer { padding: 18px; } .ct-prime strong { font-size: 3.8rem; } .ct-sheet-head, .ct-settings, .ct-group-list, .ct-actions { padding-left: 15px; padding-right: 15px; } .ct-sheet-head { flex-direction: column; } .ct-add-group { align-self: flex-start; } .ct-settings { grid-template-columns: 1fr; } .ct-unit-note { grid-column: auto; } .ct-group-fields { grid-template-columns: 1fr 1fr; } .ct-group-fields > label:first-child, .ct-group-fields .ct-shape-field:not([hidden]) { grid-column: span 2; } .ct-explainer { padding: 17px; } .ct-figure { padding: 8px; } }