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/* Business Unit 1 family styling for the Sport edition. */
:root{--paper:#f9f8f3;--ink:#1c1d1b;--lime:#ddfa91;--purple:#5e4e9e;--line:#aaa89e}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
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header nav a{padding:.55rem .7rem;border-radius:.65rem;font-size:.9rem}
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/* REVISE. Sport V6 — learner-led diagnostic, history, 30-day planning */
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/* V7: Perfect the 8-marker · source-informed guided analytical writing */
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.e8-band-grid>div{background:#fff;border:1px solid #cbd2c3;border-radius:13px;padding:.8rem;display:flex;flex-direction:column;gap:.35rem}
.e8-band-grid strong{font-size:1.55rem;line-height:1.2}
.e8-band-grid span{font-size:.79rem;line-height:1.45}
.e8-tips{padding-left:1.35rem}.e8-tips li{margin:.6rem 0}
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.e8-scenario{display:flex;flex-direction:column;gap:.55rem;min-height:245px;border:1px solid #c9c3d1;border-radius:20px;background:#fff;padding:1.25rem;text-decoration:none;transition:transform .15s ease,box-shadow .15s ease}
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.e8-scenario span{color:#58377d;font-size:.8rem;font-weight:800;letter-spacing:.02em}
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.e8-option{display:flex;align-items:baseline;gap:.3rem;margin:.45rem 0;padding:.85rem 1rem;border:1px solid #b8b5bb;border-radius:11px;cursor:pointer;background:#fff;color:#242221}
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.e8-chain{display:grid;gap:1rem;margin:1.2rem 0}.e8-chain-part{background:#f5f7ef;border:1px solid #d0d5c6;padding:1rem;border-radius:14px}
.e8-chain-part label{display:block;margin-bottom:.6rem}.e8-chain-part label strong{display:block}.e8-chain-part label span{display:block;font-size:.87rem;color:#4a4d46}
.e8-chain-part textarea{background:#fff;width:100%;min-height:6rem}
.e8-hint{margin:1rem 0 0;background:#ece2fa;border-radius:12px;padding:1rem;border-left:4px solid #6b5491}
.e8-hint p:last-child{margin-bottom:0}.e8-next{display:flex;gap:.6rem;justify-content:flex-end;flex-wrap:wrap;margin:1.1rem 0 2rem}
.e8-exam-sheet{background:#fff;padding:1rem;border:1px solid #b5adb9;border-radius:10px}.e8-exam-sheet label{font-weight:850;display:block;margin-bottom:.6rem}
.e8-exam-sheet textarea{line-height:1.8;min-height:18rem;background:#fff repeating-linear-gradient(to bottom,transparent 0,transparent calc(1.8em - 1px),#ece8ed calc(1.8em - 1px),#ece8ed 1.8em)}
.e8-exam-sheet .muted{margin:.6rem 0 0}.e8-status:empty{display:none}
.e8-model{border-left:4px solid #7ea64a;background:#f2f7ea;padding:1rem;margin:1rem 0}.e8-model>summary{font-size:1.05rem}
.e8-example{padding:1rem 0}.e8-example h3{margin-bottom:.45rem}
.e8-rubric{border:1px solid #c0bcc5;border-radius:12px;overflow:hidden;margin:1rem 0}
.e8-rubric>div{display:grid;grid-template-columns:70px minmax(0,1fr);align-items:start;gap:1rem;padding:.85rem}
.e8-rubric>div+div{border-top:1px solid #ddd6e1}.e8-rubric>div:nth-child(odd){background:#f6f4f0}
.e8-rubric strong{font-size:1.15rem}.e8-rubric span{font-size:.94rem}
.e8-self,.e8-checklist{padding:.85rem 1rem;margin:1rem 0}.e8-self label,.e8-checklist label{display:flex;align-items:start;gap:.5rem;padding:.65rem .2rem}
.e8-self input,.e8-checklist input{margin-top:.35rem;accent-color:#5e4e9e}
.e8-result{border:1px solid #84a85b;background:#f1f8e7;border-radius:12px;padding:1rem;margin:1rem 0}
.e8-result p{margin:.5rem 0 0}
.e8-history article{display:flex;gap:1rem;justify-content:space-between;align-items:center;border-bottom:1px solid #dfdadd;padding:1rem .1rem}
.e8-history article small{display:block;color:#555;margin:.25rem 0}.e8-history article p{margin:0}
.e8-sources{max-width:none;font-size:.8rem;color:#504e52;padding-top:.75rem;border-top:1px solid #cecbd1;margin:1.4rem 0}
@media(max-width:960px){.e8-hero{grid-template-columns:1fr}.e8-scenario-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.e8-hero .card{height:auto}}
@media(max-width:650px){.e8-band-grid{grid-template-columns:1fr}.e8-band-grid>div{display:grid;grid-template-columns:75px 1fr}.e8-readout{grid-template-columns:1fr}.e8-scenario-grid{grid-template-columns:1fr}.e8-scenario{min-height:0}.e8-nav{gap:.35rem}.e8-tab{font-size:.77rem;padding:.52rem .63rem}.e8-history article{display:block}.e8-history article a{margin-top:.7rem}.e8-stimulus{padding:1.1rem}}
@media(prefers-reduced-motion:reduce){.e8-scenario{transition:none}}
@media print{.e8-nav,.e8-next,.e8-mcq button,.e8-sources{display:none!important}.e8-stimulus{color:#000;background:#fff;border:1px solid #888}.e8-scenario-grid{display:none}.e8-exam-sheet textarea{border-bottom:1px solid #888}}
/* V8: diagnostic skill profile and personalised extended-response activities */
.sv-skill-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.7rem;margin:1rem 0}
.sv-skill-grid>div{display:flex;flex-direction:column;gap:.45rem;padding:1rem;border:1px solid #ded4e6;border-radius:14px;background:#fbf9ff}
.sv-skill-grid strong{font-size:1rem}.sv-skill-grid span{font-size:.82rem;color:#5b5263}
.sv-skill-grid progress{width:100%;height:.68rem}
.sv-exam-row{border-left:4px solid #7563a2;padding-left:.7rem!important;background:#f9f5ff}
.sv-exam-row strong{color:#352358}
@media(max-width:790px){.sv-skill-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:410px){.sv-skill-grid{grid-template-columns:1fr 1fr;gap:.4rem}.sv-skill-grid>div{padding:.7rem}}

/* V9: Topic Mastery — purposeful retrieval, explanation and delayed confirmation */
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.tm-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem;margin:1.1rem 0 1.4rem}
.tm-summary>div{background:#eae2f7;border:1px solid #d1c1e5;border-radius:17px;padding:1.1rem;display:flex;flex-direction:column;gap:.35rem;min-width:0}
.tm-summary strong{font-size:clamp(1.25rem,3.5vw,2.5rem);line-height:1.15;letter-spacing:-.04em;overflow-wrap:anywhere}
.tm-summary span{color:#473950;font-size:.88rem}
.tm-method{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.9rem;margin:1.1rem 0}
.tm-method p{padding:1rem;background:#f2efea;border:1px solid #d6ced7;border-radius:12px;font-size:.91rem;margin:0}
.tm-controls{display:grid;gap:.95rem;margin:1.4rem 0}
.tm-filters,.tm-choices{display:flex;gap:.5rem;flex-wrap:wrap}
.tm-filter{background:#fff;border:1px solid #867b91;border-radius:100px;color:#24202d;font-size:.84rem;padding:.55rem .85rem}
.tm-filter.is-active,.tm-filter[aria-pressed=true]{background:#332549;color:#fff;border-color:#332549}
.tm-search-label{display:flex;align-items:center;gap:.8rem;flex-wrap:wrap;font-weight:800}
.tm-search-label input{flex:1;min-width:200px;max-width:500px;padding:.8rem .9rem;border-radius:12px}
.tm-topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.8rem;margin-bottom:1.25rem}
.tm-topic{display:flex;flex-direction:column;gap:.65rem;padding:1.15rem;min-height:214px;border:1px solid #b7afbd;border-radius:18px;background:var(--surface);color:var(--read-ink);text-decoration:none;transition:transform .13s ease,box-shadow .13s ease}
.tm-topic:hover,.tm-topic:focus-visible{transform:translateY(-2px);box-shadow:0 5px 0 #d8cbea}
.tm-toprow{display:flex;flex-wrap:wrap;gap:.25rem;align-items:center;justify-content:space-between}
.tm-system{font-size:.78rem;font-weight:800;letter-spacing:.02em;color:#5b387c}
.tm-status{font-weight:750;font-size:.73rem;padding:.24rem .45rem;border-radius:7px;background:#eeeaf1}
.tm-topic>strong{font-size:1.18rem;line-height:1.25;letter-spacing:-.025em;flex:1}
.tm-topic>span:not(.tm-toprow):not(.tm-open){font-size:.85rem;color:#554f5e}
.tm-topic progress,.tm-summary progress{width:100%;accent-color:#623d93;height:.65rem}
.tm-open{font-weight:800;font-size:.85rem;text-decoration:underline;text-underline-offset:3px}
.tm-quiz-header{display:flex;align-items:center;justify-content:space-between;gap:.6rem;flex-wrap:wrap;margin:1.3rem 0 .45rem}
.tm-quiz-header strong{font-size:1.15rem}.tm-quiz-header span{font-size:.85rem;color:#52475f}
.tm-quiz-header+progress{width:100%;height:13px;accent-color:#5a318a;margin:0 0 1.4rem}
.tm-question{font-size:clamp(1.2rem,2.6vw,1.7rem);line-height:1.4}
fieldset.tm-options{padding:0;background:transparent;border:0;display:grid;gap:.55rem;margin:1.4rem 0 1rem}
.tm-option{display:flex;gap:.8rem;align-items:flex-start;padding:.85rem;border:2px solid #c2b9ca;border-radius:12px;background:#fff;color:#231e28;cursor:pointer;min-height:62px}
.tm-option:has(input:checked){border-color:#6e4593;background:#f4ecff}
.tm-option:has(input:focus-visible){outline:3px solid #9756ef;outline-offset:3px}
.tm-option input{margin-top:.55rem;accent-color:#5c318a}
.tm-letter{font-weight:850;display:inline-grid;place-items:center;background:#ebe2f5;border-radius:7px;padding:.2rem .45rem;min-width:32px;flex-shrink:0}
.tm-option.tm-correct{border-color:#32743e;background:#e6f5e2}.tm-option.tm-correct .tm-letter{background:#c4eabd}
.tm-option.tm-incorrect{border-color:#a04b35;background:#fff0eb}
.tm-feedback{padding:1rem;background:#edf4e4;border-left:5px solid #658e3b;border-radius:9px;margin:1.2rem 0}
.tm-feedback strong{font-size:1.05rem}.tm-feedback p{margin:.45rem 0 0}
.tm-check-error,.tm-written-error{color:#85352d;font-weight:750;display:inline-block;margin:.6rem 0}
.tm-review-item{padding:.7rem 0;border-bottom:1px solid #d6d0da}
.tm-review-item:last-child{border-bottom:0}
.tm-write-label{display:block;font-weight:850;margin-bottom:.5rem}
.tm-model{padding:1rem;margin:1.1rem 0;background:#eef4e9;border-left:4px solid #789951;border-radius:8px}
.tm-model p{margin:.45rem 0 0}
fieldset.tm-rating{padding:.85rem;margin:1rem 0;border-color:#b8afbf;background:#fcfaff}
.tm-rating legend{font-size:1rem;font-weight:850}
.tm-rating label{display:flex;gap:.55rem;align-items:flex-start;margin:.5rem 0}
.tm-rating label input{margin-top:.36rem;accent-color:#542899}
.tm-saved{font-size:.9rem;color:#30613d;margin:.7rem 0}
.tm-empty{padding:1rem;font-weight:750}
@media(max-width:900px){.tm-topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.tm-method{grid-template-columns:1fr}.tm-summary{gap:.4rem}.tm-summary>div{padding:.8rem .65rem}.tm-summary strong{font-size:clamp(1.1rem,5.5vw,1.75rem)}.tm-summary span{font-size:.72rem}}
@media(max-width:520px){.tm-topic-grid{grid-template-columns:1fr}.tm-topic{min-height:0}.tm-filters{gap:.35rem}.tm-filter{padding:.45rem .65rem;font-size:.77rem}.tm-option{padding:.7rem;gap:.5rem}.tm-choices button{flex-grow:1}}
@media(prefers-reduced-motion:reduce){.tm-topic{transition:none}}
@media print{.tm-controls,.tm-choices,.tm-quiz-header+progress,.tm-option input,.tm-quiz-header+progress{display:none!important}.tm-topic-grid{grid-template-columns:repeat(2,1fr)}}
/* V10: guided short-answer coaching and unified evidence dashboard */
.wc-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin:1rem 0 2rem}
.wc-cards>.card{display:flex;flex-direction:column;align-items:flex-start}.wc-cards>.card p{flex-grow:1}.wc-cards>.card .btn{margin-top:auto}
.wc-method{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}
.wc-method>div{border-left:3px solid #8b64b6;padding:.35rem 1rem;background:#f7f1fa;border-radius:8px;color:#342141}
.wc-method h3{margin:.2rem 0}.wc-summary{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.75rem;margin:1rem 0 1.6rem}
.wc-summary>div{background:#f4f0f8;color:#352746;border:1px solid #c8bad8;border-radius:13px;padding:1rem;display:flex;flex-direction:column;gap:.3rem}
.wc-summary strong{font-size:clamp(1.4rem,3vw,2rem);line-height:1.15}.wc-summary span{font-size:.85rem}
.wc-plan-model,.wc-model{background:#eef5e9;border:1px solid #9cb78a;border-radius:11px;padding:1rem;margin:1rem 0}
.wc-model h3{margin-top:0}.wc-error{font-weight:700;color:#923821}.wc-rating{margin:1rem 0;padding:1rem;border:1px solid #c2b9c9;border-radius:11px}
.wc-rating label{display:flex;gap:.65rem;padding:.65rem .2rem;align-items:flex-start}.wc-rating input{margin-top:.3rem}
.wc-system-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.8rem}
.wc-system-grid>div{display:flex;flex-direction:column;gap:.25rem;background:#f6f1fb;border-radius:9px;padding:.75rem;color:#32263d}
.wc-system-grid progress,.wc-mastery-list progress{width:100%;accent-color:#7547a7;height:.7rem}
.wc-mastery-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.6rem}
.wc-mastery-list a{display:flex;flex-direction:column;gap:.25rem;padding:.7rem;border:1px solid #bfb4c9;border-radius:10px;text-decoration:none;color:var(--read-ink);background:var(--surface)}
.wc-mastery-list a:hover,.wc-mastery-list a:focus-visible{outline:2px solid #7143a4}
.wc-mastery-list strong{font-size:.91rem}.wc-mastery-list span{font-size:.78rem}
@media(max-width:680px){.wc-cards,.wc-method,.wc-mastery-list{grid-template-columns:1fr}}
@media print{.wc-cards,.wc-method{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* V11 | 10 contextual illustrations in Learn and short personalised sessions. */
.sv-topic-visual-layout{display:grid;grid-template-columns:minmax(230px,.78fr) minmax(0,1.22fr);gap:clamp(.9rem,2vw,1.4rem);align-items:start;margin:.5rem 0 1.25rem}
.sv-topic-visual{margin:0;background:#f4f0f8;border:1px solid #ddd4e6;border-radius:17px;overflow:hidden;min-width:0}
.sv-topic-visual img{display:block;width:100%;height:auto;max-height:550px;object-fit:contain;background:#f3f1f8}
.sv-topic-visual figcaption{font-size:.87rem;line-height:1.48;padding:.8rem .9rem;background:#fbfafc;color:#3d3249;border-top:1px solid #d9d2e2}
.sv-topic-visual figcaption strong{color:#5a397b}
.sv-topic-copy{min-width:0}
.sv-topic-copy>p{max-width:75ch}
.sv-topic-schematic{margin:.8rem 0;border-top:1px solid #dcd6df}
.sv-topic-schematic summary{font-size:.92rem}
.sv-topic-schematic .diagram{max-width:100%;margin:.7rem auto}
@media(max-width:740px){.sv-topic-visual-layout{grid-template-columns:1fr}.sv-topic-visual{max-width:480px;margin:0 auto}.sv-topic-copy{width:100%}}
@media print{.sv-topic-visual{break-inside:avoid}.sv-topic-visual img{max-height:280px}.sv-topic-visual-layout{grid-template-columns:40% minmax(0,1fr)}}

.sv-visual-open{display:inline-block;margin:.35rem 0 .1rem;font-weight:750;text-underline-offset:3px}

/* V12: full-width, readable supplemental Deep Knowledge figures. */
.sv-deep-visuals{margin:1.55rem 0 1.2rem;padding:1.2rem;background:#f6f3fc;border:1px solid #dfd5ed;border-radius:20px}
.sv-deep-visual-intro{margin-bottom:1rem}
.sv-deep-visual-intro .eyebrow{margin:0 0 .25rem;color:#654389;font-size:.72rem;letter-spacing:.1em}
.sv-deep-visual-intro h3{font-size:clamp(1.15rem,2vw,1.55rem);margin:.05rem 0 .3rem}
.sv-deep-visual-intro>p:last-child{margin:.2rem 0;color:#534a60;font-size:.91rem}
.sv-deep-plate{margin:0 0 1rem;background:#fff;border:1px solid #ddd6e6;border-radius:15px;overflow:hidden}
.sv-deep-plate:last-child{margin-bottom:0}
.sv-deep-plate-name{background:#fff;padding:.65rem 1rem;margin:0;font-weight:850;color:#2c2440;border-bottom:1px solid #eee8f2}
.sv-deep-media{display:block;background:#fafafa;text-decoration:none;line-height:0}
.sv-deep-media:focus-visible{outline:3px solid #8459b8;outline-offset:-3px}
.sv-deep-media img{display:block;width:100%;height:auto;max-height:780px;object-fit:contain;background:#fff}
.sv-deep-plate figcaption{padding:.8rem 1rem;background:#fff;line-height:1.5;color:#3c3447}
.sv-deep-plate figcaption p{margin:.25rem 0 .55rem}
.sv-deep-note{font-size:.81rem;color:#5c5563}
.sv-deep-caution{font-size:.85rem;background:#fff6de;border-left:4px solid #b27b13;padding:.75rem .9rem;border-radius:4px}
.sv-deep-plate .sv-visual-open{margin-bottom:0}
@media(max-width:760px){.sv-deep-visuals{padding:.55rem;border-radius:14px}.sv-deep-visual-intro{padding:.55rem}.sv-deep-plate-name{font-size:.95rem}.sv-deep-media img{max-height:640px}}
@media(max-width:540px){.home-grid{grid-template-columns:1fr}.activity{min-height:142px}.sv-deep-visuals{padding:.4rem}.sv-deep-plate figcaption{padding:.7rem}.sv-deep-media img{max-height:none}}
@media print{.sv-deep-plate{break-inside:avoid}.sv-deep-media img{max-height:600px}.sv-deep-visuals{background:#fff;border-color:#bbb}}
/* V13 full mock examinations */
.v13-exam-head{background:#f2ecfa;border:1px solid #d8cde6;border-radius:1.25rem;padding:clamp(1.25rem,3vw,2rem)}
.v13-exam-head h1{font-size:clamp(1.8rem,4vw,3rem);margin:.5rem 0}
.v13-exam-head .eyebrow{font-size:.78rem;font-weight:800;letter-spacing:.075em}
.v13-note{font-size:.85rem;background:#fff9e5;padding:.7rem;border-left:4px solid #8670b5}
.v13-exam-section{margin:1.3rem 0;border:1px solid #d6d2d9;padding:clamp(.85rem,2vw,1.5rem)}
.v13-exam-section h2{font-size:clamp(1.2rem,2.2vw,1.6rem);border-bottom:2px solid #5c4a98;padding-bottom:.65rem}
.v13-stimulus{background:#f4f2ed;padding:.8rem 1rem;border-radius:.5rem;line-height:1.65}
.v13-exam-question{margin:1.2rem 0 1.9rem;padding:0 0 1rem;border-bottom:1px solid #ddd7e8}
.v13-exam-question h3{font-size:1.1rem;display:flex;justify-content:space-between;align-items:baseline;gap:.6rem}
.v13-exam-question h3 span{font-size:.85rem;color:#4d4774}
.v13-part{margin:1rem 0 1.4rem}.v13-prompt{line-height:1.7}.v13-marks{float:right;white-space:nowrap;margin-left:.5rem}
.v13-part textarea{width:100%;max-width:100%;min-height:5rem;box-sizing:border-box;line-height:1.7;background:#fff repeating-linear-gradient(to bottom,transparent 0,transparent calc(1.7em - 1px),#d8d4dc calc(1.7em - 1px),#d8d4dc 1.7em);padding:.6rem;border:1px solid #bdb9c9}
.v13-guidance{background:#f6f2fe;border:1px solid #dbd1ef;border-radius:.85rem;padding:.9rem 1rem}
.v13-guidance h4{margin:0 0 .5rem}.v13-guidance li{margin:.32rem 0}.v13-bands{border-top:1px solid #cbbddf;padding:.7rem 0 0;margin:.7rem 0}
.v13-bands p{margin:.32rem 0}.v13-pitfall{background:#fff7e5;padding:.65rem;border-left:4px solid #db9946}
.v13-figure{margin:.65rem 0 1rem;padding:.6rem;background:#fff;border:1px solid #aba4b7;border-radius:.75rem;max-width:760px}
.v13-figure svg{display:block;width:100%;height:auto}.v13-figure figcaption{font-size:.82rem;color:#4b4651;margin:.3rem}
.v13-section-total,.v13-paper-total{text-align:right;font-weight:900;border-top:2px solid #4c4661;padding-top:.6rem}
.v13-paper-total{font-size:1.35rem}.v13-source-note{margin-top:1.5rem;padding:1rem;background:#f5f3fb;border-radius:1rem}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
@media(max-width:660px){.v13-exam-head{padding:1rem}.v13-exam-section{padding:.8rem}.v13-part textarea{font-size:1rem}.v13-figure{padding:.1rem}}
@media print{.v13-exam-head{background:#fff;border:0;padding:0}.v13-exam-section{break-before:page;border:0;padding:0}.v13-exam-section:first-of-type{break-before:auto}.v13-exam-question{break-inside:auto}.v13-part{break-inside:avoid}.v13-part textarea{border:0;border-bottom:1px solid #aaa;min-height:5rem;color:transparent!important;background:#fff repeating-linear-gradient(to bottom,transparent 0,transparent calc(1.7em - 1px),#aaa calc(1.7em - 1px),#aaa 1.7em)}.v13-guidance,.v13-figure{break-inside:avoid}.v13-stimulus{background:#fff;border-left:2px solid #555}.v13-paper-total{break-before:avoid}}

/* V14: discreet specification checkpoint and glossary */
.v14-spec-panel{margin:1rem 0;padding:.9rem 1rem;border:1px solid #cdc1e1;border-left:4px solid #7051ae;border-radius:.65rem;background:#f7f3ff}
.v14-spec-panel summary{cursor:pointer;font-weight:800;color:#372552}
.v14-spec-panel p{line-height:1.65;margin:.65rem 0 .2rem}
dl dt{margin-top:.7rem}dl dd{margin-left:0;line-height:1.55;color:#494452}