.catalog-main{padding-top:30px}.breadcrumbs{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;color:var(--muted);margin-bottom:34px}.breadcrumbs a:hover{text-decoration:underline}.library-hero{display:flex;justify-content:space-between;align-items:center;gap:40px;padding:20px 0 48px}.library-hero h1{font-size:clamp(38px,4.4vw,62px);line-height:1.08;letter-spacing:-2px;font-weight:500;margin:17px 0 22px}.library-hero h1 em{font-family:Georgia,serif;font-weight:400;color:var(--green)}.library-hero p:not(.eyebrow),.tool-page-hero p:not(.eyebrow){font-size:15px;line-height:1.8;color:var(--muted);max-width:700px}.library-motif{display:grid;grid-template-columns:1fr 1fr;width:218px;flex-shrink:0;gap:10px;transform:rotate(-5deg)}.library-motif span{display:grid;place-items:center;height:96px;background:var(--mint);border-radius:17px;font:42px Georgia,serif}.library-motif span:nth-child(2){background:var(--peach)}.library-motif span:nth-child(3){background:var(--lavender)}.library-controls{border-top:1px solid var(--line);padding-top:28px}.search-field{display:flex;align-items:center;gap:12px;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:0 17px;max-width:620px}.search-field>span{font-size:27px}.search-field input{width:100%;border:0;outline:0;background:transparent;color:var(--ink);padding:17px 0;font:inherit;font-size:14px;min-width:0}.search-field:focus-within{outline:2px solid var(--green);outline-offset:3px}.category-filters{display:flex;flex-wrap:wrap;gap:8px;margin:21px 0 27px}.category-filters button{padding:10px 16px;background:transparent;border:1px solid var(--line);border-radius:24px;font-size:12px;color:var(--text);cursor:pointer}.category-filters button[aria-pressed=true]{background:var(--ink);color:var(--bg);border-color:var(--ink)}.category-filters button:hover{border-color:var(--green)}.library-count{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin-bottom:18px}.catalog-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.catalog-card{display:flex;flex-direction:column;border:1px solid var(--line);background:var(--surface);border-radius:13px;padding:24px;transition:transform .18s,border-color .18s,box-shadow .18s;min-width:0;text-decoration:none}.catalog-card:hover{transform:translateY(-4px);border-color:var(--green);box-shadow:var(--shadow)}.card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:23px}.category-symbol{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:10px;background:var(--mint);font:25px Georgia,serif;flex-shrink:0}.catalog-card[data-category=finance] .category-symbol,.catalog-card[data-category=algebra] .category-symbol{background:var(--peach)}.catalog-card[data-category=student] .category-symbol,.catalog-card[data-category=other] .category-symbol{background:var(--lavender)}.card-arrow{color:var(--muted);font-size:20px}.card-category{font-size:10px;text-transform:uppercase;letter-spacing:1.3px;color:var(--muted);margin-bottom:10px}.catalog-card h3{font-size:18px;font-weight:600;line-height:1.4;margin:0 0 9px}.catalog-card p{font-size:13px;line-height:1.75;color:var(--muted);margin:0}.library-note{display:flex;align-items:center;gap:25px;margin:42px 0;padding:30px;border-radius:13px;background:var(--mint)}.library-note h2{font-size:20px;font-weight:500;margin:0 0 8px}.library-note p{max-width:670px;font-size:13px;line-height:1.7;margin:0;color:var(--text)}.library-note>a{margin-left:auto;white-space:nowrap;font-size:13px}.empty-search{text-align:center;padding:60px 15px;color:var(--muted)}.empty-search h2{color:var(--ink)}.catalog-footer{border-top:1px solid var(--line);padding-top:30px;padding-bottom:35px;display:flex;align-items:center;gap:22px;flex-wrap:wrap}.catalog-footer>p{font-size:12px;color:var(--muted);margin:0}.catalog-footer>a:last-of-type{font-size:13px;margin-left:auto}.catalog-footer small{flex-basis:100%;font-size:11px;color:var(--muted)}.catalog-footer small a{text-decoration:underline}.tool-page-hero{display:flex;justify-content:space-between;align-items:center;gap:30px;margin:15px 0 35px}.tool-page-hero h1{font-size:clamp(32px,3.7vw,48px);font-weight:500;letter-spacing:-1.5px;line-height:1.15;margin:16px 0}.hero-category-symbol{width:94px;height:94px;display:grid;place-items:center;background:var(--mint);border-radius:24px;font:52px Georgia,serif;flex-shrink:0;transform:rotate(-6deg)}.tool-workspace{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:stretch}.input-sheet,.answer-sheet{border-radius:16px;border:1px solid var(--line);padding:30px;min-width:0}.input-sheet{background:var(--surface)}.sheet-label{display:flex;justify-content:space-between;gap:10px;font-size:10px;letter-spacing:1px;color:var(--muted);margin-bottom:28px}.input-sheet h2{font-size:24px;font-weight:500;letter-spacing:-.4px;margin:0 0 10px}.sheet-description{font-size:13px;color:var(--muted);margin:0 0 28px;line-height:1.65}.catalog-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 15px}.catalog-field:only-child,.catalog-field:has(input[type=text]){grid-column:1/-1}.catalog-field label{display:block;font-size:12px;font-weight:500;margin-bottom:9px;color:var(--text)}.catalog-field input,.catalog-field select{display:block;width:100%;border:1px solid var(--line);border-radius:8px;background:var(--bg);padding:13px 12px;color:var(--ink);font:inherit;font-size:15px;min-width:0;min-height:48px}.catalog-field input:focus,.catalog-field select:focus{outline:2px solid var(--green);outline-offset:2px}.form-actions{display:flex;gap:12px;margin-top:26px}.form-actions .primary-button{flex:1}.secondary-button{border:1px solid var(--line);border-radius:8px;padding:11px 17px;background:var(--surface);color:var(--ink);font:inherit;font-size:12px;cursor:pointer;min-height:42px}.secondary-button:hover:not(:disabled){border-color:var(--green);background:var(--mint)}.secondary-button:disabled{opacity:.45;cursor:not-allowed}.example-link{font-size:12px;color:var(--green);border:0;padding:0;background:transparent;cursor:pointer;text-decoration:underline;text-underline-offset:4px}.privacy-note{color:var(--muted);font-size:11px;border-top:1px solid var(--line);padding-top:22px;margin-top:25px;margin-bottom:0}.answer-sheet{background:var(--mint);display:flex;flex-direction:column}.answer-sheet .sheet-label{margin-bottom:24px}.answer-sheet #result-state{font-size:9px;letter-spacing:.6px;text-align:right}.answer-sheet>#copy-answer{align-self:flex-start;margin-top:22px;background:transparent}.answer-sheet #result-empty{padding:35px 10px;flex:1;display:flex;flex-direction:column;justify-content:center;text-align:center}.empty-result-symbol{font:70px Georgia,serif;opacity:.3}.answer-sheet #result-empty h2{font:italic 27px Georgia,serif;margin:14px 0}.answer-sheet #result-empty p{max-width:300px;margin:0 auto;font-size:13px;line-height:1.8;color:var(--text)}.answer-label{font-size:10px;letter-spacing:1px;margin:8px 0 12px;color:var(--text)}#answer-headline{font-size:clamp(26px,3vw,38px);font-weight:500;letter-spacing:-1px;line-height:1.3;overflow-wrap:anywhere;margin:0 0 26px}#answer-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:0 0 25px}#answer-metrics div{min-width:0}#answer-metrics dt{font-size:11px;color:var(--text);margin-bottom:6px}#answer-metrics dd{margin:0;font-size:16px;overflow-wrap:anywhere}.worked-steps{border-top:1px solid var(--line);padding-top:20px}.worked-steps h3{font-size:13px;margin:0 0 12px}.worked-steps ol{padding-left:21px;font-size:12px;line-height:1.85;color:var(--text)}.worked-steps li{margin-bottom:6px}#answer-table table{border-collapse:collapse;width:100%;font-size:12px;margin-bottom:25px}#answer-table th,#answer-table td{text-align:left;border-bottom:1px solid var(--line);padding:9px 6px}.tool-explanation{display:grid;grid-template-columns:1fr 1fr;gap:45px;margin:50px 0}.tool-explanation h2{font-size:23px;font-weight:500;margin:16px 0 22px;letter-spacing:-.4px}.formula-text{background:var(--surface);border:1px solid var(--line);border-radius:9px;padding:20px;font:18px/1.7 Georgia,serif;overflow-wrap:anywhere}.formula-note>p:last-child,.howto-note details p{font-size:13px;line-height:1.8;color:var(--muted)}.howto-note details{border-bottom:1px solid var(--line);padding:15px 0}.howto-note summary{font-size:13px;cursor:pointer;font-weight:500}.howto-note details p{margin-bottom:0}.related-tools{border-top:1px solid var(--line);padding:35px 0 50px}.related-tools .section-heading>a{font-size:12px}.constants-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.constant-card{padding:25px;background:var(--surface);border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;align-items:flex-start;min-width:0}.constant-symbol{font:32px Georgia,serif;color:var(--green);margin-bottom:18px}.constant-card h2{font-size:17px;margin:0 0 14px;font-weight:500}.constant-card code{font-size:15px;overflow-wrap:anywhere}.constant-card p{font-size:12px;line-height:1.7;color:var(--muted);flex:1}.constant-card button{margin-top:10px}.standalone-keypad{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin-top:18px}.standalone-keypad button{border:1px solid var(--line);border-radius:7px;background:var(--bg);padding:11px;color:var(--ink);font:inherit;cursor:pointer}.standalone-keypad button:hover{background:var(--mint)}.catalog-main [hidden]{display:none!important}.catalog-main button:active{transform:translateY(1px)}.catalog-main a:focus-visible,.catalog-main button:focus-visible{outline:2px solid var(--green);outline-offset:4px}.form-status.error{color:#a83d32}:root[data-theme=dark] .form-status.error{color:#ffaaa0}.catalog-main .form-status{overflow-wrap:anywhere}.catalog-browse{display:flex;justify-content:center;margin-top:24px}.catalog-browse a{padding:13px 25px;border:1px solid var(--line);border-radius:8px;font-size:13px}
@media(max-width:900px){.catalog-grid,.constants-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.input-sheet,.answer-sheet{padding:23px}.catalog-fields{grid-template-columns:1fr}.tool-explanation{gap:25px}.library-motif{width:160px}.library-motif span{height:75px}.sheet-label{font-size:9px}}
@media(max-width:640px){.catalog-main{padding-top:18px}.breadcrumbs{font-size:10px;gap:7px;margin-bottom:26px}.library-hero{padding:0 0 28px;gap:10px}.library-hero h1{font-size:38px}.library-hero p:not(.eyebrow){font-size:13px}.library-motif{display:none}.library-count>span:last-child:not(:first-child){display:none}.category-filters{gap:7px}.category-filters button{padding:9px 12px;font-size:11px}.catalog-grid,.constants-grid{grid-template-columns:1fr}.catalog-card{padding:21px}.card-top{margin-bottom:18px}.library-note{padding:23px;gap:15px;flex-wrap:wrap}.library-note>a{margin-left:0}.library-note>.category-symbol{display:none}.catalog-footer{gap:15px}.catalog-footer>a:last-of-type{margin-left:0}.tool-page-hero{gap:10px}.tool-page-hero h1{font-size:32px}.tool-page-hero .eyebrow{font-size:9px;letter-spacing:1px}.hero-category-symbol{display:none}.tool-workspace,.tool-explanation{grid-template-columns:1fr}.catalog-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-field label{font-size:11px}.tool-explanation{gap:18px;margin:32px 0}.input-sheet,.answer-sheet{padding:23px 20px}.answer-sheet #result-empty{padding:20px 0}.related-tools .section-heading{align-items:flex-start;gap:18px}.library-controls{padding-top:20px}.search-field input{font-size:12px}.tool-page-hero p:not(.eyebrow){font-size:13px}.constant-card{padding:23px}.formula-text{font-size:17px}}
@media(max-width:360px){.catalog-fields{grid-template-columns:1fr}.library-hero h1{font-size:34px}.input-sheet,.answer-sheet{padding:20px 16px}.sheet-label{letter-spacing:.4px}.library-count{font-size:11px}}
@media(prefers-reduced-motion:reduce){.catalog-card{transition:none}}