:root{--bg:#f6f5ef;--ink:#17231e;--muted:#495951;--line:#ced5ca;--green:#24523e;--lime:#d7f68b;--paper:#fffefa}*{box-sizing:border-box}html{color-scheme:light}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,sans-serif}a{color:inherit;text-underline-offset:.24em}button,input,select{font:inherit}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #316e52;outline-offset:4px}.skip{position:absolute;left:12px;top:12px;background:white;padding:12px;transform:translateY(-180%);z-index:5}.skip:focus{transform:none}.shell{width:min(1200px,calc(100% - 88px));margin:auto}header{border-bottom:1px solid var(--line);background:var(--paper)}.bar,.foot,.actions{display:flex;align-items:center;justify-content:space-between;gap:24px}.bar{min-height:76px}.brand{display:flex;align-items:center;gap:10px;font-size:.9rem;line-height:1.1;font-weight:850;text-decoration:none;letter-spacing:-.025em}.brand small{display:block;font-size:.65rem;letter-spacing:.22em;margin-top:5px}.mark{display:grid;place-items:center;background:var(--ink);color:var(--lime);width:37px;height:37px;border-radius:8px;font-size:24px;font-weight:900;font-style:italic}.primary,.foot nav{display:flex;gap:clamp(12px,2.5vw,34px);font-weight:650;font-size:.9rem}.primary a{text-decoration:none;padding:10px 0}.primary a:hover,.primary [aria-current]{text-decoration:underline}.button{display:inline-flex;align-items:center;justify-content:center;gap:13px;background:var(--lime);color:#142018;border:1px solid #1f3828;border-radius:6px;padding:11px 17px;text-decoration:none;font-weight:780;min-height:46px;cursor:pointer}.button:hover{background:#c3ee68}.button:disabled{opacity:.65;cursor:wait}.hero,.split,.form-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(24px,6vw,90px);align-items:center}.hero{padding:74px 0 78px}.status,.eyebrow,.cards b,.year span,.sheet-top,.sheet-foot{font:750 .75rem/1.4 ui-monospace,monospace;letter-spacing:.09em}.status{display:inline-flex;align-items:center;gap:9px;padding:7px 11px;border:1px solid #b8c9b8;background:#e8efe1;border-radius:40px;margin:0 0 23px}.status i{width:8px;height:8px;border-radius:50%;background:#326344}.eyebrow,.green,.cards b{color:var(--green)}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.03;letter-spacing:-.055em}h1{font-size:clamp(3rem,7.2vw,6.55rem);margin-bottom:24px;font-weight:820}h1 em{font-style:normal;color:var(--green);text-decoration:underline;text-decoration-color:#9abd72;text-underline-offset:.11em;text-decoration-thickness:.055em}h2{font-size:clamp(2rem,4.1vw,3.55rem);margin-bottom:16px}h3{font-size:1.5rem;margin-bottom:12px}.lead{font-size:clamp(1.04rem,1.65vw,1.25rem);max-width:38rem;color:var(--muted);margin-bottom:24px}.actions{justify-content:flex-start;flex-wrap:wrap;gap:14px 22px}.inline{font-weight:760;display:inline-block;padding:6px 0}.note{color:var(--muted);font-size:.88rem;margin:14px 0 0}.workbook{background:#1b372b;color:#f2f6e9;border-radius:16px;padding:18px;box-shadow:0 13px 32px #18352825}.sheet-top,.sheet-foot{display:flex;justify-content:space-between;gap:12px;padding:5px 2px 14px;color:#d2e5cf}.sheet-foot{padding:14px 2px 2px}.paper{border-radius:8px;padding:clamp(20px,4vw,48px);background:linear-gradient(#aab6a52c 1px,transparent 1px) 0 0/100% 25px,var(--paper);color:var(--ink)}.paper h2{font-size:clamp(2.2rem,5vw,4.65rem)}.math{border-left:3px solid #779b65;background:#e8efdc;padding:9px 14px;font:700 clamp(1rem,2.2vw,1.5rem)/1.65 ui-monospace,monospace}.math small{font-size:.66em;color:var(--muted)}.math strong{color:var(--green)}.block{padding:42px 0;border-top:1px solid var(--line)}.block>p,.prose p{max-width:65ch}.years,.cards{display:grid;gap:12px;grid-template-columns:repeat(4,1fr);margin:22px 0 12px}.cards{grid-template-columns:repeat(3,1fr)}.levels{grid-template-columns:repeat(2,1fr)}.year,.cards article,aside{background:var(--paper);border:1px solid var(--line);border-radius:9px;padding:22px}.year{display:grid;gap:7px;text-decoration:none}.year:hover{background:#e8efe1}.year strong{font-size:1.22rem;letter-spacing:-.035em}.cards h3{margin-top:10px}.cards p{margin-bottom:0}.levels a{margin-top:12px}.call{display:flex;justify-content:space-between;align-items:center;gap:22px;background:#20392d;color:#f8f9ee;border-radius:14px;margin:12px 0 52px;padding:clamp(24px,5vw,52px)}.call p{margin-bottom:0}.call .button{flex:none}details{border-bottom:1px solid var(--line);max-width:760px}summary{cursor:pointer;padding:15px 0;font-weight:750}details p{max-width:65ch;padding-right:12px}.crumb{font-size:.88rem;color:var(--muted);padding-top:20px}.intro{padding:44px 0 32px}.intro h1{font-size:clamp(2.8rem,6.5vw,5.5rem)}.form-grid{align-items:start;margin-bottom:64px;grid-template-columns:1.4fr .6fr;gap:25px}form{padding:clamp(18px,4vw,38px);border:1px solid var(--line);border-radius:12px;background:var(--paper)}.fields{display:grid;grid-template-columns:1fr 1fr;gap:18px}.fields label{display:grid;gap:7px;font-weight:650}input:not([type=checkbox]),select{background:white;color:var(--ink);border:1px solid #77877b;border-radius:5px;padding:10px;width:100%;min-width:0}.check{display:block;margin:24px 0}.check input{accent-color:var(--green);width:17px;height:17px;vertical-align:middle;margin-right:8px}#feedback:empty{display:none}#feedback{margin:16px 0 0;color:var(--green);font-weight:700}aside h2{font-size:1.8rem}footer{border-top:1px solid var(--line);padding:26px 0;color:var(--muted)}footer p{margin:4px 0 0}article[id]{scroll-margin-top:24px}
@media(max-width:900px){.shell{width:calc(100% - 48px)}.bar{flex-wrap:wrap;gap:4px 14px;padding:12px 0}.primary{order:3;flex-basis:100%;flex-wrap:wrap;justify-content:space-between}.hero{padding:52px 0}.years{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){.shell{width:calc(100% - 32px)}.hero,.split,.form-grid{grid-template-columns:1fr;gap:26px}.hero{padding:35px 0 42px}.primary{gap:0 10px;font-size:.81rem}.bar>.button{font-size:.82rem;padding:8px 10px;min-height:40px}.cards,.fields{grid-template-columns:1fr}.block{padding:32px 0}.call,.foot{align-items:flex-start;flex-direction:column}.year,.cards article{padding:15px}.workbook{padding:12px}.sheet-top,.sheet-foot{font-size:.62rem}.intro{padding:32px 0 20px}}
.subject-list{columns:2;padding-left:1.2rem}.subject-list li{break-inside:avoid;padding:3px 0}#year-11,#year-12{scroll-margin-top:24px}.years{grid-template-columns:repeat(2,1fr)}@media(max-width:650px){.subject-list{columns:1}}

/* Shared navigation and directory components */
.crumb ol{display:flex;flex-wrap:wrap;gap:6px 9px;list-style:none;margin:0;padding:0}
.crumb li+li::before{content:"/";margin-right:9px;color:var(--muted)}
.mobile-nav{display:none}
.browse-grid,.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0}
.browse-card,.course-grid a{display:grid;gap:8px;padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:9px;text-decoration:none}
.browse-card:hover,.course-grid a:hover{border-color:var(--green);background:#e8efe1}
.browse-card strong{font-size:1.65rem;line-height:1.1}
.course-grid{list-style:none;padding:0}
.course-grid a{position:relative;height:100%;padding-right:40px}
.course-grid a>span{position:absolute;right:15px;top:18px}
.course-grid small{color:var(--muted)}
.search-label:not([hidden]){display:grid;gap:6px;max-width:35rem;font-weight:700}
.plain-list{padding-left:1.2rem}
.plain-list li+li{margin-top:8px}
.site-footer{background:#20392d;color:#f8f9ee;padding:42px 0 20px}
.site-footer p{margin-top:14px;color:#d2e5cf}
.site-footer a:focus-visible{outline-color:var(--lime)}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:24px}
.footer-grid ul{list-style:none;padding:0;margin:8px 0 0}
.footer-grid li a{display:inline-block;padding:5px 0;color:#eef5e8}
.footer-base{display:flex;justify-content:space-between;gap:14px;border-top:1px solid #6b8374;margin-top:26px;padding-top:15px;font-size:.88rem}
@media(max-width:900px){
 .bar{position:relative;gap:8px;justify-content:flex-start}
 .bar>.button{margin-left:auto}
 .bar>.primary{display:none}
 .mobile-nav{display:block;border:0}
 .mobile-nav summary{list-style:none;border:1px solid var(--line);border-radius:6px;padding:9px;min-height:40px}
 .mobile-nav summary::-webkit-details-marker{display:none}
 .mobile-nav[open] nav{position:absolute;inset:100% 0 auto;z-index:3;display:grid;background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:10px;box-shadow:0 10px 20px #18352825}
 .mobile-nav nav a{padding:10px}
 .browse-grid,.course-grid,.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:520px){
 .browse-grid,.course-grid{grid-template-columns:1fr}
 .bar>.button{font-size:.73rem;padding:6px 7px;gap:4px}
 .bar .brand{font-size:.76rem;gap:5px}
 .bar .mark{width:28px;height:30px}
 .mobile-nav summary{font-size:.8rem;padding:9px 6px}
}
.subject-actions{margin-bottom:32px}.subject-related{display:flex;flex-wrap:wrap;gap:12px 20px;padding:0 0 38px}.browse-card strong{overflow-wrap:anywhere}
.workspace-list{display:grid;gap:12px;margin-top:16px}.workspace-list article{padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:8px}.workspace-list .actions{flex-wrap:wrap}.workspace-list progress{accent-color:var(--green)}[data-workspace] video{width:min(100%,520px);border-radius:8px}
.call-fields{margin:16px 0}.call-fields textarea{font:inherit;min-width:0;width:100%;border:1px solid var(--line);border-radius:6px;padding:8px}
[data-room] .actions{flex-wrap:wrap}.room-videos{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr));gap:12px}.room-videos video{width:100%;background:var(--ink);border-radius:8px}#room-share{margin:16px 0}#room-copy{margin-top:8px}

/* Native hidden states must win over component display declarations. */
[hidden] { display: none !important; }
[data-workspace][aria-busy="true"] { cursor: progress; }
.workspace-list textarea { width: 100%; resize: vertical; }
#workspace-summary strong { font-size: 2rem; }
textarea { font: inherit; }
textarea:focus-visible { outline: 3px solid #316e52; outline-offset: 4px; }
[data-lesson-plan] { display: grid; gap: 18px; max-width: 46rem; }
[data-lesson-plan] label { display: grid; gap: 6px; }