:root{--ink:#21382b;--muted:#526658;--accent:#35663b;--blue:#286b89;--line:#ceddcb;--bg:#f3f8ef;--leaf:#dcefc8;--leaf-bright:#c7e5aa}
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header{background:#edf6e5;border-color:var(--line)}
.brand{color:#294f2f;letter-spacing:-.035em}
.year-card{border-top-color:#90bc6d;background:#fff}
.year-card:hover,.notion-link:hover{background:#eaf5de}
.primary,button.primary{background:var(--leaf);color:#234629;border-color:#8bb978}
.primary:hover,button.primary:hover{background:var(--leaf-bright)}
.lesson-steps a[aria-current=step]{background:var(--leaf);color:#234629;border-color:#81aa6b;font-weight:600}
.badge.available{background:#e4f2d7;color:#345b32}
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.resource-context{background:#f0f7e8;border-color:#78a65b}
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.revision-section .worksheet-groups{grid-template-columns:1fr}
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.signed-counter.positive{background:#dcefc8;color:#244a2b;border-color:#5f8747}
.signed-counter.negative{background:#e8e1f7;color:#4d3477;border-color:#8163aa}
.counter-legend{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
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.counter-tools button{font-size:15px;min-height:44px}
.counter-log{border-left:3px solid #91b979;padding-left:20px;font-size:16px}
.counter-log li{margin:8px 0}
.counter-equation{font-size:clamp(24px,4vw,34px);font-weight:600;margin:16px 0}
.counter-status{min-height:3em}
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.counter-choice input,.counter-choice select{max-width:130px;display:block}
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.inverse-machine{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;align-items:center;margin:20px 0}
.machine-cell{border:1px solid var(--line);background:#f3f8ee;border-radius:6px;padding:15px;text-align:center}
.machine-cell strong{display:block;font-size:24px;margin:8px 0}
.weather-inquiry{margin-top:22px;border-top:1px solid var(--line);padding-top:18px}
.weather-inquiry label{display:block;margin:12px 0}
.weather-inquiry input{max-width:140px;display:inline-block;margin-left:8px}
.weather-summary{display:flex;gap:18px;flex-wrap:wrap;font-size:16px}
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.language-choice button{font-size:14px;padding:7px 12px;min-height:38px}
.language-choice button[aria-pressed=true]{background:#dcefc8;border-color:#7ba767;color:#234629}
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.bilingual-guide h3{font-size:17px;margin-bottom:6px}
.bilingual-words{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 24px}
.bilingual-words div{border-top:1px solid var(--line);padding-top:8px}
.bilingual-words dt{font-weight:600}.bilingual-words dd{margin:4px 0 0;color:#455b4a}
@media(max-width:600px){.bilingual-words{grid-template-columns:1fr}.language-choice>span{flex-basis:100%}}
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/* Guided signed-counter lesson: one visible operation at a time. */
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.fm-route-scroll{overflow-x:auto;margin:.5rem 0 1rem;padding:3px}.fm-journey.fm-anchored{display:grid;grid-template-columns:minmax(90px,1fr) repeat(var(--fm-n),24px minmax(90px,1fr) 24px minmax(90px,1fr));gap:.4rem;min-width:calc(90px + var(--fm-n)*250px);margin:0;align-items:stretch}.fm-anchored .fm-value,.fm-anchored .fm-box{min-width:0;display:flex;flex-direction:column;justify-content:center}.fm-anchored .fm-arrow{align-self:center;text-align:center}.fm-route-label{font-weight:600;margin-top:1.4rem;font-size:1rem}
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.signed-counter.zero{background:linear-gradient(135deg,#dcefc8 0%,#dcefc8 48%,#e8e1f7 52%,#e8e1f7 100%);border-color:#576e64;color:#23372d;font-size:24px;box-shadow:inset 0 0 0 3px white}.cb-zero-message{font-weight:600;background:#eff6e9;border-left:3px solid #729568;padding:.75rem}.cb-zero-message:empty{display:none}@media(prefers-reduced-motion:no-preference){.cb-zero-formed{animation:counter-zero .35s ease-out}@keyframes counter-zero{from{transform:translate(-50%,-50%) scale(1.3)}to{transform:translate(-50%,-50%) scale(1)}}}
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.dv-repdigits{display:inline-block;text-align:center;padding:.3rem .65rem}.dv-repdigits small{border-top:1px solid currentColor}
/* Decimals: stable whole, linked units, and visible exchanges. */
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/* The supplied graph examples: one question before one revealed transformation. */
.gc-workshop{max-width:820px;margin:auto}.gc-choices{display:flex;flex-wrap:wrap;gap:.6rem;margin:1rem 0}.gc-choices button[aria-pressed="true"]{background:#d9edc8;border:2px solid #38734b}.gc-plot,.gc-portrait{width:100%;height:auto;display:block;background:#fff}.gc-plot text,.gc-portrait text{font:16px system-ui;fill:#203a31;paint-order:stroke;stroke:#fff;stroke-width:3px;stroke-linejoin:round}.gc-point{display:flex;align-items:center;flex-wrap:wrap;gap:.75rem;margin:1rem 0}.gc-point select{max-width:250px}.gc-question{padding:1.1rem;border-left:4px solid #8db96a;background:#f2f8ed}.gc-question h4{font-size:1.4rem;margin:.2rem 0}.gc-question form{display:flex;flex-wrap:wrap;align-items:end;gap:.7rem}.gc-question form label{max-width:220px}.gc-question input{width:100%}.gc-equation,.gc-mapping{font-size:1.35rem;font-weight:700}.gc-result{padding:1rem 0}.gc-machine{display:flex;gap:.55rem;align-items:center;flex-wrap:wrap;padding:.7rem 0}.gc-machine span{background:#edf5e6;border:1px solid #abc59e;padding:.6rem;border-radius:.4rem;min-width:45px;text-align:center}.gc-machine small{display:block;font-size:.875rem}.gc-machine strong{display:block;font-size:1.2rem}.gc-geogebra{border-top:1px solid #c8d7c2;margin-top:1.2rem;padding:1rem 0}.gc-geogebra pre{padding:1rem;background:#f2f5f0;font-size:1.05rem;white-space:pre-wrap}.gc-original-label{font-weight:700}.gc-extra{margin:1rem 0}.gc-extra summary{font-weight:650;cursor:pointer}.gc-extra .notion-list{padding-left:1.4rem}@media(max-width:600px){.gc-question form{display:block}.gc-question form button{margin:.5rem .3rem .1rem 0}.gc-question form label{display:block}.gc-plot,.gc-portrait{min-width:480px}.gc-workshop{overflow-x:auto}.gc-machine small{font-size:.875rem}}

.programme-domain{margin:2.5rem 0}.programme-domain>h2{font-size:1.5rem;padding-bottom:.65rem;border-bottom:2px solid #b7d3a4}.programme-domain .chapter-row h3{font-size:1.2rem;margin:.2rem 0 .65rem}.programme-subheading{font-size:1.1rem;color:#3c6046;margin:1.3rem 0 .3rem}.programme-domain .chapter-list{margin-top:.75rem}