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serif;margin:11px 0 0;font-size:32px;font-weight:600;line-height:1.05}.part-panel-header p{color:var(--ink-soft);margin:0;font-size:14px}.unit-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:12px;display:grid}.unit-card{contain:content;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-strong);box-shadow:var(--shadow-sm);overflow:hidden}.unit-card:not(.open):hover{border-color:var(--line-strong);box-shadow:var(--shadow-md)}.unit-card.open{border-color:var(--part-colour);box-shadow:var(--shadow-md);grid-column:1/-1}.unit-summary{text-align:left;cursor:pointer;background:0 0;border:0;grid-template-columns:76px minmax(0,1fr) auto 30px;align-items:center;gap:14px;width:100%;min-height:72px;padding:14px 16px;display:grid}.unit-summary:hover{background:var(--canvas)}.unit-card.open .unit-summary{background:var(--canvas);color:var(--ink);border-bottom:1px solid var(--line)}.unit-number{color:var(--ink-soft);letter-spacing:.08em;text-transform:uppercase;font-size:12px;font-weight:700}.unit-title{text-overflow:ellipsis;white-space:nowrap;font-size:16px;font-weight:700;overflow:hidden}.unit-state{background:var(--canvas-deep);color:var(--ink-soft);white-space:nowrap;border-radius:99px;padding:5px 9px;font-size:12px;font-weight:700}.unit-state.active{background:var(--yellow-soft);color:var(--yellow-deep)}.unit-state.complete{background:var(--green-soft);color:var(--green-dark)}.unit-toggle-icon{color:var(--ink-soft);text-align:center;font-size:24px;font-weight:400}.unit-card.open .unit-toggle-icon{color:var(--part-colour);transform:rotate(180deg)}.unit-detail{padding:16px}.weekly-note{border:1.5px dashed var(--line-strong);border-radius:var(--radius);background:var(--canvas);grid-template-columns:115px minmax(0,1fr) auto;align-items:center;gap:18px;padding:16px 18px;display:grid}.weekly-note>span{color:var(--ink-soft);letter-spacing:.08em;text-transform:uppercase;font-size:12px;font-weight:700}.weekly-note p{color:var(--ink-soft);margin:0;font-size:14px;line-height:1.55}.weekly-note a{background:var(--part-colour);color:#fff;white-space:nowrap;border-radius:99px;justify-content:center;align-items:center;gap:7px;min-height:40px;padding:10px 16px;font-size:12px;font-weight:700;text-decoration:none;display:flex}.weekly-note a:hover{background:var(--part-colour)}@supports (color:color-mix(in lab, red, red)){.weekly-note a:hover{background:color-mix(in srgb, var(--part-colour) 82%, black)}}.weekly-note a:hover svg{transform:translate(3px)}.weekly-note svg{width:16px}.session-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:12px;display:grid}.session-card{contain:content;--session-colour:var(--blue);border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-strong);box-shadow:var(--shadow-sm);overflow:hidden}.session-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-md)}.session-card.session-practising{box-shadow:0 0 0 2.5px var(--yellow), var(--shadow-sm)}.session-card.session-mastered{box-shadow:0 0 0 2.5px var(--green), var(--shadow-sm)}.session-header{background:var(--surface-strong);grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:12px;min-height:82px;padding:16px 18px;display:grid}.session-letter{background:var(--session-colour);color:#fff;width:40px;height:40px;font-family:var(--font-serif), "Noto Serif", Georgia, serif;border-radius:8px;place-items:center;font-size:18px;font-weight:700;display:grid}.session-header>div>span{color:var(--ink-soft);letter-spacing:.09em;text-transform:uppercase;font-size:12px;font-weight:700}.session-header h4{margin:3px 0 0;font-size:18px;line-height:1.15}.kind{border:1px solid var(--line-strong);background:var(--surface-strong);color:var(--ink-soft);letter-spacing:.04em;text-transform:uppercase;border-radius:99px;padding:5px 8px;font-size:12px;font-weight:700}.instruction-list{padding:0 18px}.instruction-list>div{border-bottom:1px solid var(--line);grid-template-columns:100px 1fr;gap:12px;padding:13px 0;display:grid}.instruction-list>div:last-child{border-bottom:0}.instruction-list span{color:var(--ink-soft);letter-spacing:.06em;text-transform:uppercase;font-size:12px;font-weight:700}.instruction-list p{color:var(--ink-soft);margin:0;font-size:14px;line-height:1.55}.session-resources{border-top:1px solid var(--line);grid-template-columns:1fr auto;gap:8px;padding:14px 18px;display:grid}.session-resources a{border:1px solid var(--line-strong);background:var(--surface-strong);min-height:44px;color:var(--ink);border-radius:99px;justify-content:center;align-items:center;gap:7px;padding:9px 13px;font-size:12px;font-weight:700;text-decoration:none;display:flex}.session-resources a:hover{border-color:var(--session-colour);background:var(--session-colour)}@supports (color:color-mix(in lab, red, red)){.session-resources a:hover{background:color-mix(in srgb, var(--session-colour) 8%, var(--surface-strong))}}.session-resources a:hover{color:var(--session-colour)}.session-resources .open-resource{border-color:var(--session-colour);background:var(--session-colour);color:#fff}.session-resources .open-resource:hover{background:var(--session-colour)}@supports (color:color-mix(in lab, red, red)){.session-resources .open-resource:hover{background:color-mix(in srgb, var(--session-colour) 82%, black)}}.session-resources .open-resource:hover{color:#fff;transform:translateY(-1px)}.session-resources svg{width:17px;height:17px}.extra-practice{border:1px solid var(--coral);background:var(--coral-soft);border-left-width:4px;border-radius:8px;margin:0 18px 16px;padding:13px 14px}.extra-practice>span{color:var(--coral-dark);letter-spacing:.07em;text-transform:uppercase;margin-bottom:4px;font-size:11px;font-weight:700;display:block}.extra-practice p{color:var(--ink-soft);margin:0 0 10px;font-size:13px;line-height:1.5}.extra-practice-row{flex-wrap:wrap;gap:8px;display:flex}.extra-practice-row a{background:var(--coral);color:#fff;border-radius:99px;align-items:center;gap:7px;padding:8px 13px;font-size:12px;font-weight:700;text-decoration:none;display:inline-flex}.extra-practice-row a:hover{background:var(--coral-dark)}.extra-practice-row svg{width:15px;height:15px}.extra-mastered-toggle{border:1.5px solid var(--coral);color:var(--coral-dark);cursor:pointer;background:0 0;border-radius:99px;align-items:center;gap:6px;padding:8px 13px;font-family:inherit;font-size:12px;font-weight:700;display:inline-flex}.extra-mastered-toggle:hover{background:var(--coral-soft)}.extra-mastered-toggle.on{background:var(--green);border-color:var(--green);color:#fff}.extra-mastered-toggle.on:hover{background:var(--green-dark);border-color:var(--green-dark)}.extra-mastered-date{color:var(--green-dark);margin:8px 0 0;font-size:12px;font-weight:700}.status-control{border:0;grid-template-columns:repeat(3,1fr);gap:5px;margin:0;padding:0 18px 18px;display:grid}.status-control legend{width:100%;color:var(--ink-soft);letter-spacing:.07em;text-transform:uppercase;padding:0 0 7px;font-size:12px;font-weight:700}.status-control button{border:1px solid var(--line);background:var(--surface);min-height:38px;color:var(--ink-soft);cursor:pointer;border-radius:99px;justify-content:center;align-items:center;gap:4px;padding:7px 5px;font-size:12px;font-weight:700;display:flex}.status-control button:hover{border-color:var(--line-strong);background:var(--canvas);color:var(--ink)}.status-control button:active{transform:scale(.96)}.status-option-not-started.selected{border-color:var(--line-strong);background:var(--canvas-deep);color:var(--ink)}.status-option-practising.selected{border-color:var(--yellow);background:var(--yellow);color:#3d2c05}.status-option-mastered.selected{border-color:var(--green);background:var(--green);color:#fff}.mastered-date{color:var(--green-dark);text-align:center;margin:-8px 18px 18px;font-size:12px;font-weight:700}.guide-section{border-top:1px solid var(--line);background:var(--canvas);padding:84px max(22px,50vw - 560px) 96px}.guide-details{grid-template-columns:repeat(3,1fr);align-items:start;gap:10px;display:grid}.guide-details details{contain:content;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-strong);box-shadow:var(--shadow-sm);overflow:hidden}.guide-details details:hover{box-shadow:var(--shadow-md)}.guide-details details[open]{border-color:var(--blue)}.guide-details summary{cursor:pointer;-webkit-user-select:none;user-select:none;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;min-height:65px;padding:14px 18px;list-style:none;display:grid}.guide-details summary::-webkit-details-marker{display:none}.guide-details summary span{color:var(--blue);font-size:12px;font-weight:700}.guide-details summary strong{font-size:14px}.guide-details summary i{width:16px;height:16px;position:relative}.guide-details summary i:before,.guide-details summary i:after{content:"";background:var(--ink);width:12px;height:1px;position:absolute;top:7px;left:2px}.guide-details summary i:after{transform:rotate(90deg)}.guide-details details[open] summary i:after{transform:rotate(0)}.guide-details ul{color:var(--ink-soft);margin:0;padding:0 22px 20px 38px;font-size:14px;line-height:1.6}.guide-details li{margin:6px 0}.curriculum-note{border:1px solid var(--yellow);grid-template-columns:.82fr 1.18fr;align-items:start;gap:48px;margin-top:24px;padding:30px 32px;display:grid}@supports (color:color-mix(in lab, red, red)){.curriculum-note{border:1px solid color-mix(in srgb, var(--yellow) 30%, var(--line))}}.curriculum-note{border-radius:var(--radius-lg);background:linear-gradient(140deg, var(--yellow-soft), var(--surface-strong))}.curriculum-note span{color:var(--yellow-deep);letter-spacing:.1em;text-transform:uppercase;font-size:12px;font-weight:700}.curriculum-note h3{max-width:430px;font-family:var(--font-serif), "Noto Serif", Georgia, serif;margin:8px 0 0;font-size:24px;font-weight:600;line-height:1.08}.curriculum-note p{color:#5c5346;margin:0;font-size:14px;line-height:1.65}.curriculum-note p+p{margin-top:18px}.curriculum-note a{background:var(--navy);color:#fff;font-family:var(--font-sans), Arial, sans-serif;border-radius:99px;align-items:center;gap:8px;padding:10px 18px;font-size:12px;font-weight:700;text-decoration:none;display:inline-flex}.curriculum-note a svg{width:16px}.curriculum-note a:hover{background:var(--blue);transform:translateY(-1px)}.curriculum-note a:hover svg{transform:translate(3px)}footer{background:var(--navy);color:#fff;grid-template-columns:1fr 1fr auto;align-items:center;gap:30px;padding:42px max(22px,50vw - 560px);display:grid}.footer-actions a{border:1px solid #fff3;border-radius:99px;padding:9px 15px;text-decoration:none}.footer-actions a:hover{background:#ffffff17;border-color:#ffffff80}.footer-brand{align-items:center;gap:12px;display:flex}.footer-brand .brand-mark{background:var(--canvas);color:#fff;border-radius:12px;padding:4px}.footer-brand>span:last-child{flex-direction:column;display:flex}.footer-brand small{color:#b7c5cd;margin-top:3px;font-size:12px}footer>p{color:#c8d3d9;text-align:center;margin:0;font-size:14px}.footer-actions{gap:18px;display:flex}.footer-actions a{color:#fff;font-size:12px;font-weight:700}.mobile-nav{display:none}@media (width<=1040px){.today-section{grid-template-columns:1fr 390px;gap:40px}.part-tabs{grid-template-columns:repeat(2,1fr)}}@media (width<=780px){body{padding-bottom:calc(68px + env(safe-area-inset-bottom))}.brand-mark,.brand-mark .mathnest-mark{flex-basis:36px;width:36px;height:36px}.masthead-words small{display:none}.sync-trigger{justify-content:center;width:40px;height:40px;padding:0}.sync-trigger>span,.sync-trigger>i{display:none}.sync-panel{overscroll-behavior:contain;width:auto;max-height:calc(100dvh - 88px);position:fixed;top:72px;left:16px;right:16px;overflow-y:auto}.today-section{grid-template-columns:1fr;gap:40px;min-height:0;padding:34px 18px 62px}.masthead{padding:22px 18px 0}.today-shell:before{width:460px;height:460px;top:-220px;right:-180px}.today-shell:after{width:420px;height:420px;bottom:-300px;left:-200px}h1{font-size:clamp(46px,13vw,64px)}.part-ribbon{margin-top:28px}.part-ribbon span{letter-spacing:.02em;font-size:12px}.programme-summary span{padding:0 13px;font-size:12px}.programme-summary strong{font-size:16px}.next-lesson-card{padding:24px}.next-actions{grid-template-columns:1fr}.programme-section,.guide-section{padding:66px 18px 72px}.section-heading{grid-template-columns:1fr;gap:20px;margin-bottom:28px}.section-heading h2{font-size:38px}.part-tabs{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.part-tab{grid-template-columns:34px minmax(0,1fr);grid-template-areas:"index score""name name";row-gap:9px;min-height:0;padding:12px}.part-index{grid-area:index;width:34px;height:34px}.part-name{grid-area:name}.part-name strong{white-space:normal;line-height:1.25;overflow:visible}.part-score{grid-area:score;place-self:center end}.part-panel-header{flex-direction:column;align-items:start;gap:8px;padding:22px}.unit-grid{grid-template-columns:1fr;padding:8px}.unit-card.open{grid-column:auto}.unit-summary{grid-template-columns:64px minmax(0,1fr) 24px;gap:10px;min-height:72px;padding:12px}.unit-title{white-space:normal;line-height:1.3}.unit-state{grid-area:2/2;justify-self:start}.unit-toggle-icon{grid-area:1/3/span 2}.unit-detail{padding:10px}.weekly-note{grid-template-columns:1fr;gap:7px;padding:15px}.weekly-note a{white-space:normal;margin-top:4px}.session-grid{grid-template-columns:1fr}.session-header{grid-template-columns:38px minmax(0,1fr) auto;padding:15px}.session-letter{width:38px;height:38px}.instruction-list{padding:0 15px}.instruction-list>div{grid-template-columns:88px 1fr;gap:8px}.session-resources{padding:13px 15px}.status-control{padding:0 15px 15px}.mastered-date{margin:-8px 15px 15px}.guide-details{grid-template-columns:1fr}.curriculum-note{grid-template-columns:1fr;gap:20px;padding:23px}footer{text-align:left;grid-template-columns:1fr;padding:32px 20px}footer>p{text-align:left}.mobile-nav{z-index:40;padding:7px 7px calc(7px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--surface-strong);grid-template-columns:repeat(3,1fr);display:grid;position:fixed;bottom:0;left:0;right:0}.mobile-nav a{color:var(--ink-soft);flex-direction:column;align-items:center;gap:3px;padding:5px;font-size:12px;font-weight:700;text-decoration:none;display:flex}.mobile-nav svg{width:19px;height:19px}.mobile-nav a:hover{color:var(--blue)}}@media (width<=430px){.lesson-position{flex-wrap:wrap}.session-resources{grid-template-columns:1fr 48px}.session-resources a:last-child{padding:0}.session-resources a:last-child span{display:none}.status-control{grid-template-columns:1fr}.status-control button{min-height:40px}}.session-codes{font-family:var(--font-mono,ui-monospace), ui-monospace, monospace;letter-spacing:.04em;color:var(--ink-soft);font-size:12px}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}