/* The calculator is the working surface; design notes follow it. */
body{background:#fff;color:#182439}
.csk-page{--paper:#fff;--paper-2:#f5f9ff;--text:#182439;--muted:#526178;--dim:#60748c;--line:#d3e0f2;--blue:#2457e6}
.csk-heading{max-width:1440px;margin:auto;padding:104px 40px 28px}
.csk-heading>a{color:#526178;font-size:14px;text-decoration:none}
.csk-heading-row{display:flex;align-items:center;justify-content:space-between;gap:28px;margin-top:26px}
.csk-eyebrow{font:600 12px/1.5 'Inter',sans-serif;letter-spacing:.12em;color:#60748c}
.csk-heading h1{font-size:clamp(32px,4vw,52px);letter-spacing:-.045em;line-height:1.15;margin:8px 0 12px}
.csk-heading-row p:not(.csk-eyebrow){color:#526178;font-size:16px;line-height:1.6;max-width:760px}
.csk-guide-link{color:#2457e6;font-size:14px;text-decoration:none;white-space:nowrap}
.article.csk-page{max-width:1440px;padding:0 40px 80px;margin:auto;width:100%}
.csk-workspace{display:grid;grid-template-columns:310px minmax(0,1fr);border:1px solid #cbd3df;border-radius:16px;overflow:hidden;background:white;box-shadow:0 12px 36px #15293e0a;scroll-margin-top:85px}
.csk-controls{padding:26px;background:#fff;border-right:1px solid #dce2eb}
.csk-panel-title{display:flex;gap:12px;align-items:center;margin-bottom:24px}
.csk-panel-title>span{font:13px monospace;color:#4868a7;background:#eaf0fb;border-radius:5px;padding:7px}
.csk-panel-title h2,.csk-canvas-head h2{font-size:18px;letter-spacing:-.02em;margin:0;line-height:1.3}
.csk-field{margin-bottom:22px;display:grid;gap:9px}
.csk-field>span,.csk-field>label{font-size:14px;font-weight:650;color:#253651}
.csk-field small{font-size:12px;line-height:1.55;color:#617086}
.csk-field select{width:100%;min-height:46px;padding:10px 12px;background:#fff;border:1px solid #bdc9da;border-radius:7px;font:500 15px 'Inter',sans-serif;color:#1c2b40;cursor:pointer}
.csk-segment{display:flex;padding:4px;background:#eef2f7;border:1px solid #dce2eb;border-radius:8px;gap:4px}
.csk-segment button{flex:1;min-width:0;border:0;background:transparent;color:#546379;font:600 14px/1.4 'Inter',sans-serif;border-radius:5px;padding:10px 6px;cursor:pointer}
.csk-segment button small{display:block;font-size:12px;font-weight:400;margin-top:3px;color:inherit}
.csk-segment button[aria-pressed=true]{background:#2457e6;color:white;box-shadow:0 2px 4px #173d8320}
.csk-field select:focus-visible,.csk-workspace button:focus-visible,.csk-workspace a:focus-visible{outline:3px solid #448fff;outline-offset:3px}
.csk-table-link{font-size:13px;color:#2457e6;text-decoration:none}
.csk-output{min-width:0;background:#f5f9ff;color:#182439;display:flex;flex-direction:column}
.csk-canvas-head{padding:24px 28px 0;display:flex;justify-content:space-between;align-items:center;gap:16px}
.csk-canvas-head .csk-eyebrow{color:#526785;font-size:11px}
.csk-canvas-head h2{margin-top:7px;font-size:20px;color:#182439}
.csk-live{font-size:12px;color:#2457e6;border:1px solid #b7cdf6;background:#fff;padding:7px 10px;border-radius:30px;white-space:nowrap}
.csk-drawing{min-height:270px;display:grid;place-items:center;background-image:linear-gradient(#2457e609 1px,transparent 1px),linear-gradient(90deg,#2457e609 1px,transparent 1px);background-size:24px 24px;flex:1}
.csk-drawing svg{display:block;width:100%;max-height:365px;height:auto;font-family:'Inter',sans-serif}
.csk-readouts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid #d3e0f2;border-bottom:1px solid #d3e0f2;background:#fff}
.csk-readouts>div{padding:20px 18px;border-right:1px solid #d3e0f2;min-width:0}
.csk-readouts>div:last-child{border-right:0}
.csk-readouts span{display:block;color:#354e70;font-size:14px;line-height:1.5}
.csk-readouts b{font:10px monospace;color:#526785}
.csk-readouts strong{display:block;font:500 clamp(19px,2vw,27px)/1.4 'Share Tech Mono',monospace;color:#2457e6;white-space:nowrap;margin:7px 0}
.csk-readouts small{font-size:12px;line-height:1.4;color:#526785;display:block}
.csk-status{display:flex;gap:14px;padding:20px 25px;background:#eaf2ff;color:#1746b8;align-items:flex-start;min-height:96px}
.csk-status-icon{font-size:20px;line-height:1.3}
.csk-status strong{font-size:15px;color:inherit}
.csk-status p{font-size:13px;line-height:1.6;color:#354e70;margin:5px 0 0}
.csk-status[data-state=warn]{background:#fff5df;color:#875108}.csk-status[data-state=fail]{background:#fff0f1;color:#b3263e}
.csk-status[data-state=warn] p{color:#73541d}.csk-status[data-state=fail] p{color:#853247}
.csk-handoff{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;border-top:1px solid #d3dce8;background:#f8fafd}
.csk-settings,.csk-callout{padding:26px 30px;min-width:0}
.csk-settings{border-right:1px solid #d3dce8}
.csk-settings .csk-panel-title{margin-bottom:18px}
.csk-settings dl{display:flex;flex-wrap:wrap;gap:16px 28px}
.csk-settings dt{font-size:12px;color:#617086;margin-bottom:5px}.csk-settings dd{margin:0;font-size:14px;font-weight:650}
.csk-settings p,.csk-callout p{font-size:13px;line-height:1.7;color:#617086;margin:18px 0 0}
.csk-copy-row{display:flex;align-items:center;justify-content:space-between;gap:14px}
.csk-copy-row span{font-size:11px;letter-spacing:.1em;font-weight:650;color:#526785}
.csk-copy-row button{border:1px solid #bac8dd;border-radius:6px;background:white;padding:9px 12px;color:#2457e6;font:600 13px 'Inter',sans-serif;cursor:pointer;white-space:nowrap}
.csk-callout pre{white-space:pre-wrap;overflow-wrap:anywhere;font:500 clamp(17px,2vw,23px)/1.6 'Share Tech Mono',monospace;color:#233c66;margin:18px 0 0;user-select:all}
.csk-method{grid-column:1/-1;padding:20px 30px;border-top:1px solid #d3dce8;font-size:13px;line-height:1.8;color:#647187;margin:0;background:white}
.csk-method strong{color:#354e70;font-weight:600}
.csk-reading{max-width:940px;margin:64px auto 0}.csk-reading-title{border-bottom:1px solid #cbd3df;margin-bottom:38px;padding-bottom:22px}.csk-reading-title h2{font-size:32px;letter-spacing:-.03em;margin-top:8px}
.csk-reading .section h2{font-size:28px;line-height:1.2}.csk-reading .section{margin-bottom:48px}.csk-reading .section-mark{font-size:12px}.csk-reading .section p{font-size:16px;line-height:1.8}.csk-reading .system-row>div,.csk-reading .decision-row,.csk-reading .rule-copy,.csk-reading .callout{font-size:14px;line-height:1.7}.csk-reading .system-head,.csk-reading .source-link{font-size:13px}
@media(max-width:1100px){.csk-workspace{grid-template-columns:285px minmax(0,1fr)}.csk-controls{padding:22px}.csk-readouts{grid-template-columns:repeat(2,minmax(0,1fr))}.csk-readouts>div{padding:14px 18px}.csk-readouts>div:nth-child(-n+2){border-bottom:1px solid #d3e0f2}.csk-readouts>div:nth-child(2){border-right:0}}
@media(max-width:760px){.csk-heading{padding:94px 18px 24px}.csk-heading-row{display:block}.csk-guide-link{display:inline-block;margin-top:18px}.article.csk-page{padding:0 16px 50px}.csk-workspace{grid-template-columns:1fr}.csk-controls{border-right:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;padding:22px}.csk-panel-title,.csk-table-link{grid-column:1/-1}.csk-field{margin-bottom:0}.csk-panel-title{margin-bottom:0}.csk-canvas-head{padding:22px 18px 0}.csk-handoff{grid-template-columns:1fr}.csk-settings{border-right:0;border-bottom:1px solid #d3dce8}.csk-settings,.csk-callout{padding:24px}.csk-method{padding:20px 24px}.csk-live{display:none}.csk-reading{margin-top:42px}.csk-drawing{min-height:240px}}
@media(max-width:420px){.csk-controls{grid-template-columns:1fr}.csk-field{margin-bottom:4px}.csk-drawing svg{min-height:240px}.csk-copy-row{flex-wrap:wrap}.csk-readouts strong{font-size:22px}}
@media print{.csk-heading{padding-top:0}.csk-controls,.csk-copy-row button{display:none}.csk-workspace{display:block;box-shadow:none}.csk-output{print-color-adjust:exact}.csk-handoff{display:block}.csk-reading{break-before:page}}

/* Keep the supporting design notes in the same white-and-blue palette. */
.csk-reading .system{background:#fff;color:#182439;border-color:#d3e0f2}
.csk-reading .system-head{background:#eaf2ff;color:#354e70;border-color:#d3e0f2}
.csk-reading .system-head span:last-child{color:#2457e6}
.csk-reading .system-row,.csk-reading .system-row>div{border-color:#d3e0f2;color:#526178}
.csk-reading .system-id{color:#182439!important}
.csk-reading .system-state{color:#2457e6!important}
.csk-reading .decision-label{color:#2457e6}
.csk-reading .cta{background:#eaf2ff;color:#182439;border:1px solid #c3d7fa}
.csk-reading .cta-label{color:#2457e6}
.csk-reading .cta p{color:#526178}
.csk-reading .cta .btn-blue{color:#fff}