/* Calculator workspaces, r17. Layout and colour are scoped to this suite. */
:root{--calc-bg:#f6f7fb;--calc-card:#fff;--calc-ink:#17243b;--calc-muted:#52617a;--calc-line:#dce2ec;--calc-soft:#edf1f8;--calc-red:#c7003b;--calc-red-soft:#fff0f4;--calc-blue:#285dc2;--calc-green:#146d57}
html.dark{--calc-bg:#0b1322;--calc-card:#142036;--calc-ink:#f1f5fc;--calc-muted:#b3c0d5;--calc-line:#34445e;--calc-soft:#20314c;--calc-red:#ff6b93;--calc-red-soft:#361f31;--calc-blue:#9abaff;--calc-green:#83ddbf}
body.calc-site{background:var(--calc-bg);color:var(--calc-ink);font:15px/1.6 'Plus Jakarta Sans',system-ui,sans-serif;margin:0;min-height:100vh}
.calc-site *, .calc-site *:before,.calc-site *:after{box-sizing:border-box}.calc-site [hidden]{display:none!important}.calc-main{width:min(1240px,100%);margin:0 auto;padding:30px 32px 64px;min-width:0}.calc-main h1,.calc-main h2,.calc-main h3,.calc-main p{margin:0}.calc-main a{color:var(--calc-blue)}.calc-topline{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:34px}.calc-breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--calc-muted)}.calc-breadcrumb a{color:inherit;text-decoration:none}.calc-theme{width:42px;height:42px;background:var(--calc-card);border:1px solid var(--calc-line);border-radius:50%;color:var(--calc-ink);cursor:pointer}.calc-theme svg{width:19px;height:19px;vertical-align:middle}.calc-eyebrow{display:flex;gap:9px;align-items:center;text-transform:uppercase;font-size:11px;font-weight:800;letter-spacing:.15em;color:var(--calc-red);margin-bottom:16px}.calc-dot{width:7px;height:7px;background:currentColor;border-radius:50%}.calc-title{font-size:clamp(32px,4vw,54px);line-height:1.08;letter-spacing:-.05em;font-weight:850;max-width:720px}.calc-intro{color:var(--calc-muted);max-width:680px;margin-top:18px!important;font-size:16px}.calc-meta{display:flex;gap:18px;flex-wrap:wrap;font-size:12px;font-weight:650;color:var(--calc-muted);margin-top:22px}.calc-meta span:before{content:'✓';color:var(--calc-green);margin-right:7px}.calc-hero{display:grid;grid-template-columns:1.15fr 1fr;gap:36px;align-items:center;padding-bottom:44px}.calc-hero-preview{background:var(--calc-card);padding:25px;border:1px solid var(--calc-line);border-radius:22px;box-shadow:0 10px 35px #14223b06}.calc-preview-head{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:12px;color:var(--calc-muted);margin-bottom:15px}.calc-preview-equation{font:600 clamp(24px,3vw,36px)/1.3 ui-monospace,Consolas,monospace;padding:18px 0;color:var(--calc-ink)}.calc-preview-number{font:700 38px/1.2 ui-monospace,Consolas,monospace;color:var(--calc-red);overflow-wrap:anywhere;padding-bottom:17px}.calc-preview-note{color:var(--calc-muted);font-size:12px}.calc-section-heading{display:flex;justify-content:space-between;gap:15px;align-items:center;margin:22px 0 20px}.calc-section-heading h2{font-size:24px;letter-spacing:-.025em;font-weight:800}.calc-search{display:flex;gap:12px;align-items:center;border:1px solid var(--calc-line);background:var(--calc-card);border-radius:13px;padding:0 15px;max-width:420px;flex:1}.calc-search input{border:0!important;background:transparent!important;padding:13px 0!important}.calc-search svg{width:19px;flex:none;color:var(--calc-muted)}.calc-filter-row{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:24px}.calc-chip{border:1px solid var(--calc-line);border-radius:25px;padding:9px 17px;font-family:inherit;font-size:12px;font-weight:650;line-height:1.3;background:var(--calc-card);color:var(--calc-muted);cursor:pointer;min-height:40px}.calc-chip[aria-pressed=true]{background:var(--calc-ink);color:var(--calc-bg);border-color:var(--calc-ink)}.calc-chip:hover{border-color:var(--calc-muted)}.calc-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.calc-card{display:flex;flex-direction:column;text-decoration:none!important;background:var(--calc-card);border:1px solid var(--calc-line);border-radius:17px;padding:23px;color:var(--calc-ink)!important;min-width:0;transition:transform .15s,border-color .15s}.calc-card:hover{transform:translateY(-3px);border-color:var(--calc-red)}.calc-card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:21px}.calc-card-symbol{display:flex;align-items:center;justify-content:center;width:45px;height:45px;border-radius:13px;background:var(--calc-soft);color:var(--calc-blue);font:600 22px/1 ui-monospace,Consolas,monospace}.calc-card:nth-child(3n+2) .calc-card-symbol{color:var(--calc-green)}.calc-card:nth-child(3n) .calc-card-symbol{color:var(--calc-red);background:var(--calc-red-soft)}.calc-card-tag{font-size:10px;text-transform:uppercase;font-weight:750;letter-spacing:.07em;color:var(--calc-muted)}.calc-card h3{font-size:18px;font-weight:800;letter-spacing:-.02em}.calc-card p{font-size:13px;color:var(--calc-muted);margin-top:10px;flex:1}.calc-card-bottom{display:flex;align-items:center;justify-content:space-between;font-size:12px;font-weight:700;margin-top:22px;color:var(--calc-blue)}.calc-card-bottom span:first-child{color:var(--calc-muted);font-size:11px;font-weight:500}.calc-empty-search{padding:25px;background:var(--calc-card);border:1px solid var(--calc-line);border-radius:16px;color:var(--calc-muted)}
.calc-tool-header{margin-bottom:30px}.calc-workspace{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start;margin-top:30px}.calc-stack{display:grid;gap:22px;min-width:0}.calc-panel{background:var(--calc-card);border:1px solid var(--calc-line);border-radius:19px;padding:25px;min-width:0}.calc-panel h2{font-size:20px;font-weight:800;letter-spacing:-.025em}.calc-panel>p{color:var(--calc-muted);font-size:13px;margin:10px 0 23px}.calc-side{display:grid;gap:20px}.calc-side h2{font-size:15px}.calc-side p,.calc-side li{font-size:13px;color:var(--calc-muted)}.calc-side ul{padding-left:19px;margin:16px 0 0}.calc-side li{margin:9px 0}.calc-side a{display:inline-block;line-height:1.6}.calc-label{display:flex;flex-direction:column;gap:7px;font-size:12px;font-weight:750;min-width:0}.calc-label small{color:var(--calc-muted);font-weight:400;font-size:11px}.calc-main input,.calc-main select,.calc-main textarea{background:var(--calc-bg);border:1px solid var(--calc-line);border-radius:10px;min-height:45px;padding:11px 12px;color:var(--calc-ink);font:inherit;width:100%;min-width:0}.calc-main textarea{resize:vertical;min-height:110px;font:14px/1.6 ui-monospace,Consolas,monospace}.calc-main input[type=checkbox]{width:18px;min-height:18px;accent-color:#c7003b}.calc-check{display:flex;align-items:center;gap:10px;font-size:13px;margin:18px 0}.calc-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0}.calc-fields.three{grid-template-columns:repeat(3,minmax(0,1fr))}.calc-span{grid-column:1/-1}.calc-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.calc-button{display:inline-flex;justify-content:center;align-items:center;gap:8px;min-height:43px;background:var(--calc-card);border:1px solid var(--calc-line);border-radius:10px;padding:10px 16px;color:var(--calc-ink);font-family:inherit;font-size:12px;font-weight:700;line-height:1.4;cursor:pointer;text-decoration:none!important}.calc-button:hover{background:var(--calc-soft)}.calc-button.primary{background:#c7003b;border-color:#c7003b;color:#fff}.calc-button.primary:hover{background:#a90032}.calc-main :focus-visible{outline:3px solid #3772db;outline-offset:3px}.calc-error{background:var(--calc-red-soft);color:var(--calc-red);border-left:3px solid currentColor;border-radius:7px;padding:12px 14px;margin:16px 0 0;font-size:13px;font-weight:650}.calc-result{margin-top:24px;padding:20px;border:1px solid var(--calc-line);border-radius:13px;background:var(--calc-bg);scroll-margin-top:90px}.calc-result-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}.calc-result-heading strong{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--calc-green)}.calc-result-heading button{border:0;padding:3px;background:transparent;color:var(--calc-blue);font-size:12px;cursor:pointer}.calc-answer{font:700 clamp(25px,3vw,36px)/1.35 ui-monospace,Consolas,monospace;color:var(--calc-ink);overflow-wrap:anywhere}.calc-answer small{font-size:16px;color:var(--calc-muted)}.calc-result-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.calc-result-grid div{min-width:0}.calc-result-grid span{display:block;font-size:11px;color:var(--calc-muted);margin-bottom:5px}.calc-result-grid strong{font:700 17px/1.5 ui-monospace,Consolas,monospace;overflow-wrap:anywhere}.calc-working{font-size:12px;color:var(--calc-muted);margin-top:19px;line-height:1.8;overflow-wrap:anywhere}.calc-working code{font:inherit}.calc-note{font-size:12px;color:var(--calc-muted);padding-top:15px}.calc-formula{font:600 22px/1.7 ui-monospace,Consolas,monospace;color:var(--calc-blue);padding:14px 0}.calc-related{padding-top:35px}.calc-related .calc-cards{grid-template-columns:repeat(3,minmax(0,1fr))}.calc-ad{margin:26px 0;min-width:0;overflow:hidden}.calc-ad:has(ins[data-ad-status=unfilled]){display:none}
.calc-keypad{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin-top:18px}.calc-key{border:1px solid var(--calc-line);border-radius:9px;min-height:45px;font:650 15px/1.2 ui-monospace,Consolas,monospace;color:var(--calc-ink);background:var(--calc-bg);cursor:pointer}.calc-key:hover{background:var(--calc-soft)}.calc-key.operator{color:var(--calc-blue)}.calc-key.equals{background:#c7003b;color:#fff;border-color:#c7003b}.calc-expression{font:20px/1.6 ui-monospace,Consolas,monospace!important;min-height:65px!important}.calc-angle{display:flex;gap:7px;align-items:center;flex-wrap:wrap;margin:15px 0;font-size:12px;color:var(--calc-muted)}.calc-angle button{font-family:inherit;font-size:11px;font-weight:700;line-height:1.3;border-radius:7px;border:1px solid var(--calc-line);background:var(--calc-bg);color:var(--calc-muted);padding:8px 11px;cursor:pointer}.calc-angle button[aria-pressed=true]{color:var(--calc-red);background:var(--calc-red-soft);border-color:var(--calc-red)}.calc-history{list-style:none!important;padding:0!important;margin:0!important}.calc-history button{width:100%;border:0;border-bottom:1px solid var(--calc-line);padding:13px 0;color:var(--calc-ink);background:transparent;text-align:left;cursor:pointer;font:12px/1.6 ui-monospace,Consolas,monospace;overflow-wrap:anywhere}.calc-history button:hover{color:var(--calc-blue)}.calc-history span{display:block;color:var(--calc-muted)}.calc-matrix{display:grid;gap:7px;margin:15px 0}.calc-matrix input{padding:7px;font:14px/1.3 ui-monospace,Consolas,monospace;text-align:center}.calc-matrix-result{display:grid;gap:9px;padding:14px 16px;border-left:2px solid var(--calc-ink);border-right:2px solid var(--calc-ink);max-width:100%;overflow:auto;text-align:center;font:600 16px/1.5 ui-monospace,Consolas,monospace}.calc-marks-row{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(65px,.7fr) minmax(55px,.5fr);gap:9px;align-items:end;margin-top:12px}.calc-marks-row input{padding:10px;font-size:13px}.calc-table-wrap{overflow:auto;max-width:100%;margin-top:18px}.calc-table{border-collapse:collapse;width:100%;font-size:12px;text-align:left}.calc-table th,.calc-table td{padding:10px;border-bottom:1px solid var(--calc-line);white-space:nowrap}.calc-table th{color:var(--calc-muted);font-weight:650}.calc-graph{display:block;width:100%;height:340px;border:1px solid var(--calc-line);border-radius:12px;margin:18px 0;background:var(--calc-card);touch-action:pan-y}.calc-graph-caption{font-size:12px;color:var(--calc-muted)}.calc-geometry-figure{display:block;width:100%;height:120px;color:var(--calc-blue);margin:12px auto}
@media(max-width:1150px){.calc-workspace{grid-template-columns:minmax(0,1fr) 240px}.calc-main{padding:26px 24px 55px}.calc-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.calc-hero{grid-template-columns:1fr;gap:27px}.calc-hero-preview{max-width:620px;width:100%}}
@media(max-width:900px){.calc-workspace{grid-template-columns:1fr}.calc-side{grid-template-columns:repeat(2,minmax(0,1fr))}.calc-related .calc-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.calc-main{padding:22px 16px 44px}.calc-topline{margin-bottom:27px}.calc-title{font-size:34px}.calc-intro{font-size:14px}.calc-cards,.calc-related .calc-cards{grid-template-columns:1fr}.calc-card{padding:20px}.calc-section-heading{align-items:stretch;flex-direction:column}.calc-search{max-width:none}.calc-panel{padding:20px 16px;border-radius:15px}.calc-side{grid-template-columns:1fr}.calc-fields.three{grid-template-columns:repeat(2,minmax(0,1fr))}.calc-fields{gap:12px}.calc-keypad{gap:6px}.calc-key{min-height:45px;font-size:13px}.calc-meta{gap:10px;font-size:11px}.calc-hero-preview{padding:20px}.calc-actions .primary{flex:1}.calc-graph{height:280px}.calc-result{padding:16px}.calc-result-grid strong{font-size:15px}}
@media(prefers-reduced-motion:reduce){.calc-card{transition:none}.calc-card:hover{transform:none}}
.calc-site .calc-main{max-width:1240px}.calc-panel summary{font-weight:800;cursor:pointer;font-size:17px;color:var(--calc-ink)}.calc-panel summary:hover{color:var(--calc-blue)}.calc-panel[open] summary{margin-bottom:14px}.calc-marks-row>.calc-button{font-size:11px;min-height:30px;padding:4px 8px;justify-self:start;grid-column:1/-1}
[data-calc="scientific"]>.calc-fields,[data-calc="statistics"]>.calc-fields{grid-template-columns:1fr}
@media print{.edu-rail,.edu-mobile-menu,.edu-mobile-home,.edu-sidebar-toggle,.calc-theme,.calc-ad,.calc-actions,.calc-related,.edu-premium-footer{display:none!important}.calc-main{margin:0!important;width:100%;padding:0}.calc-workspace{grid-template-columns:1fr}.calc-side{display:none}.calc-panel,.calc-result{break-inside:avoid}.calc-site{background:white!important;color:black!important}}

/* Keep floating study helpers clear of calculator controls. Navigation retains all tools. */
.calc-site .edu-buddy{display:none!important}.calc-card-symbol{width:auto;min-width:45px;max-width:94px;padding:8px;font-size:16px;line-height:1.2;white-space:nowrap}