/* Learning materials and the dedicated notification centre. */
.materials-content{max-width:1400px;margin:auto;padding-top:36px}.materials-page-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:28px}.materials-page-heading h1{font-size:clamp(27px,3vw,40px);line-height:1.16;margin:12px 0 14px;letter-spacing:-.04em}.materials-page-heading p{max-width:550px;margin:0;font-size:15px;line-height:1.7}.materials-heading-links{display:flex;flex-direction:column;align-items:flex-end;gap:17px}.materials-heading-links .btn{font-size:13px}.materials-heading-links .btn b{border-radius:5px;padding:1px 7px;background:var(--canvas);color:var(--text)}.materials-heading-links .link{font-size:12px}.material-feature{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:30px;background:#e8f2fb;border:1px solid #c5dceb;border-radius:16px;padding:30px 36px;margin-bottom:32px;overflow:hidden;color:#173b55}.material-feature-label{font-size:10px;font-weight:700;letter-spacing:.13em;color:#246a96}.material-feature h2{font-size:29px;margin:13px 0 11px;color:#173b55}.material-feature p{color:#3e5c74;margin-bottom:18px;font-size:14px}.material-feature small{display:block;font-size:11px;margin-top:10px;color:#4c667c}.feature-fractions{transform:rotate(-4deg);padding:24px;max-width:400px;justify-self:center;width:100%}.feature-fractions>span{font-size:10px;font-weight:700;letter-spacing:.2em;display:block;text-align:center;margin-bottom:17px}.feature-fractions>div{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;height:88px}.feature-fractions i{background:#c4daec;border:2px solid #8ab4d3;border-radius:11px}.feature-fractions i:first-child{background:#177eaa;border-color:#177eaa;box-shadow:0 5px 16px #10638b28}.feature-fractions>b{font-size:18px;display:block;text-align:center;margin-top:18px;font-weight:600}.material-shelf-tabs{display:flex;gap:28px;border-bottom:1px solid var(--border);margin-bottom:23px;overflow-x:auto}.material-shelf-tabs button{background:none;border:0;border-bottom:2px solid transparent;padding:0 0 14px;color:var(--muted);font-weight:600;font-size:14px;white-space:nowrap}.material-shelf-tabs button[aria-pressed=true]{color:var(--text);border-color:var(--accent)}.material-format-tabs{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:22px}.material-format-tabs button{display:flex;align-items:center;gap:7px;border:1px solid var(--border);border-radius:9px;padding:10px 13px;background:var(--surface);color:var(--text);font-size:12px;font-weight:500}.material-format-tabs button svg{width:17px;height:17px}.material-format-tabs button[aria-pressed=true]{background:#165d87;color:#fff;border-color:#165d87}.material-filters{display:grid;grid-template-columns:minmax(0,2fr) minmax(150px,1fr) minmax(130px,.8fr);gap:15px}.material-filters label,.notifications-filter label{display:grid;gap:8px;color:var(--text);font-size:12px;font-weight:600}.material-filters .input,.material-filters .select{width:100%;font-size:13px;min-height:44px;color:var(--text);background:var(--surface)}.material-results-heading{display:flex;justify-content:space-between;align-items:center;margin:24px 0 15px;gap:12px}.material-results-heading p{font-size:13px;margin:0;color:var(--text)}.material-results-heading>span{font-size:11px;color:var(--muted)}.materials-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:21px}.material-card{border:1px solid var(--border);border-radius:13px;background:var(--surface);overflow:hidden;display:flex;flex-direction:column;transition:border-color .2s,transform .2s}.material-card:hover{border-color:var(--accent);transform:translateY(-2px)}.material-art{height:153px;position:relative;display:flex;align-items:center;justify-content:center;gap:22px;overflow:hidden;color:#1e5c89;background:#e4f0f9}.material-art> b{font-size:58px;font-weight:500}.fraction-art{width:106px;height:106px;display:grid;grid-template-columns:1fr 1fr;gap:5px;transform:rotate(-12deg)}.fraction-art i{border-radius:9px;border:2px solid #83b5d7;background:#c5dfef}.fraction-art i:first-child{background:#267eae;border-color:#267eae}.art-water{background:#e2f3f0;color:#167985}.water-art{display:flex;flex-direction:column;font-size:44px;line-height:.9;text-align:center}.water-art small{font-size:25px;margin:10px}.art-numbers{background:#eee9fb;color:#675196}.number-art{display:flex;gap:14px;align-items:center;font-size:34px;font-weight:700}.number-art i{font-style:normal;color:#9c83c0}.number-art b{border:2px dashed #a390c7;border-radius:10px;padding:2px 12px;transform:rotate(8deg)}.art-words{background:#fff0df;color:#a2682b}.word-art{display:flex;gap:8px}.word-art b,.word-art i{font-style:normal;font-size:38px;background:#fff8ef;border:1px solid #e2bd8a;border-radius:9px;padding:2px 16px;transform:rotate(-9deg)}.word-art i{transform:rotate(8deg);background:#e6c596;color:#714612}.art-code{background:#e4efea;color:#3b7661}.code-art{display:flex;align-items:center;gap:10px}.code-art b{font-size:19px;padding:12px;border-radius:9px;background:#fbfffc;border:1px solid #a0c1b4}.code-art i{font-size:30px;font-style:normal}.art-memory{background:#f7e9eb;color:#9a5060}.memory-art{display:flex;gap:15px;align-items:center}.memory-art b,.memory-art i{font-style:normal;font-size:24px;background:#fff5f7;border:1px solid #d7abb5;border-radius:12px;padding:14px 18px;transform:rotate(-8deg)}.memory-art i{transform:rotate(9deg)}.material-play{position:absolute;right:16px;bottom:13px;display:grid;place-items:center;width:35px;height:35px;border-radius:50%;background:#fff;color:#20658e;font-size:13px;padding-left:2px}.material-card-body{padding:20px;display:flex;flex:1;flex-direction:column}.material-meta{display:flex;justify-content:space-between;align-items:center;font-size:10px;color:var(--muted);gap:12px;margin-bottom:14px}.material-meta>span:first-child{display:flex;gap:6px;align-items:center;font-weight:600;color:var(--accent)}.material-meta svg{height:15px;width:15px}.material-card h3{font-size:18px;letter-spacing:-.025em;margin:0 0 10px;line-height:1.3}.material-card h3 button{border:0;background:none;color:var(--text);padding:0;text-align:left;font:inherit}.material-card p{font-size:13px;line-height:1.7;margin:0 0 17px}.material-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto}.material-tags span{font-size:10px;border:1px solid var(--border);border-radius:5px;padding:3px 7px;color:var(--muted)}.material-card-actions{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border);margin-top:19px;padding-top:13px;gap:10px}.material-open{border:0;background:none;color:var(--accent);font-size:12px;font-weight:600;padding:6px 0;display:flex;align-items:center;gap:12px}.material-save{border:1px solid var(--border);border-radius:7px;display:grid;place-items:center;width:32px;height:32px;background:var(--surface);color:var(--muted);font-size:22px}.material-save[aria-pressed=true]{color:#b07917;background:#fff5da}.material-completed{font-size:10px;color:var(--accent);margin-top:8px}.material-bottom-note{display:flex;gap:12px;align-items:flex-start;margin-top:30px;padding:18px 0;border-top:1px solid var(--border);color:var(--accent)}.material-bottom-note svg{flex:none;width:17px}.material-bottom-note p{font-size:11px;line-height:1.7;max-width:740px}.material-empty{text-align:center;border:1px dashed var(--border);padding:55px 22px;border-radius:13px;color:var(--muted);background:var(--surface)}.material-empty>svg{margin:0 auto 20px;width:34px;height:34px;color:var(--accent)}.material-empty h2,.material-empty h3{font-size:23px;color:var(--text)}.material-empty p{font-size:14px;max-width:440px;margin:0 auto 22px}.material-detail-heading{display:flex;justify-content:space-between;gap:20px;align-items:center;margin:24px 0 30px}.material-detail-heading h1{font-size:34px;margin:12px 0}.material-detail-heading p{font-size:14px;margin:0}.material-detail-layout{display:grid;grid-template-columns:minmax(0,2.5fr) minmax(240px,1fr);gap:26px;align-items:start}.material-stage{min-width:0}.material-video{display:block;width:100%;background:#102b46;aspect-ratio:16/9;border-radius:12px;border:1px solid var(--border)}.material-transcript{margin:23px 0;border:1px solid var(--border);padding:20px;border-radius:12px;background:var(--surface);font-size:14px}.material-transcript summary{font-weight:600;color:var(--text);cursor:pointer}.material-transcript p{font-size:14px;margin:16px 0 0}.material-learning-goal{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:24px}.material-learning-goal .eyebrow{font-size:9px;letter-spacing:.09em}.material-learning-goal h2{font-size:22px;margin:15px 0}.material-learning-goal h3{font-size:17px;margin:0 0 12px}.material-learning-goal p{font-size:14px;line-height:1.7}.material-goal-divider{height:1px;background:var(--border);margin:23px 0}.material-learning-goal .material-preview-note{font-size:11px;margin:15px 0 0}.material-image{margin:0 0 20px}.material-image img{width:100%;border:1px solid var(--border);border-radius:12px;display:block}.material-image figcaption{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.7}.material-reading{border:1px solid var(--border);border-radius:12px;padding:30px;background:var(--surface);margin-bottom:20px}.material-reading p{white-space:normal;font-size:15px;line-height:1.9}.material-reading ol{padding-left:20px;margin:0}.material-reading li{font-size:15px;line-height:1.8;padding:0 0 17px 5px}.worksheet-space{height:65px;background:repeating-linear-gradient(transparent 0,transparent 30px,var(--border) 31px,transparent 32px);margin-top:12px}.material-puzzle{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:32px}.material-puzzle h2{font-size:27px;line-height:1.4;margin:24px 0}.material-puzzle>p{font-size:14px}.puzzle-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:25px 0}.puzzle-options button{background:var(--canvas);color:var(--text);border:1px solid var(--border);border-radius:10px;padding:22px 12px;font-size:18px}.puzzle-options .chosen{border:2px solid var(--accent);background:var(--surface)}.material-prompt{margin:0}.material-feedback{border-top:1px solid var(--border);padding-top:24px;font-size:15px}.material-feedback p{margin:8px 0 18px}.material-feedback-text{min-height:24px;margin:22px 0 0!important;color:var(--accent);font-size:14px}.sequence-options{display:grid;gap:10px;margin-top:24px}.sequence-options button{display:flex;align-items:center;gap:13px;text-align:left;border:1px solid var(--border);border-radius:10px;background:var(--canvas);color:var(--text);padding:17px;font-size:14px}.sequence-options button:disabled{opacity:.6}.sequence-options button span{font-size:19px;color:var(--accent)}.material-memory{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:25px 0}.material-memory button{min-height:90px;border:1px solid var(--border);border-radius:11px;background:#1e668f;color:#fff;font-size:23px;font-weight:600}.material-memory button:disabled{background:var(--surface);color:var(--text);opacity:1}.material-memory button.matched{background:#e3f4eb;color:#236d50;border-color:#91c7ab}.material-success{background:var(--surface);border:1px solid var(--border);border-radius:13px;padding:55px 35px;text-align:center}.material-success>svg{width:50px;height:50px;margin:0 auto 25px;color:var(--accent)}.material-success h2{font-size:30px;margin:20px 0}.material-success p{font-size:15px;line-height:1.8}.notification-rail{padding:5px 10px;border-top:1px solid var(--border);flex:none}.unified-rail .notification-rail a{display:flex;align-items:center;gap:12px;border-radius:9px;padding:12px 9px;color:var(--text);font-size:12px;min-height:44px}.notification-rail a>span{flex:none}.notification-rail a b{font-weight:500}.notification-rail a[aria-current]{background:var(--surface);color:var(--accent)}.notification-rail-count{font-style:normal;font-size:10px;font-weight:600;background:#176b96;color:#fff;border-radius:6px;padding:1px 6px;margin-left:auto}.rail-collapsed .notification-rail a{justify-content:center;position:relative}.rail-collapsed .notification-rail-count{position:absolute;right:0;top:2px;font-size:8px;padding:0 4px}.notifications-page{max-width:990px;margin:5px auto}.notifications-title{display:flex;align-items:center;gap:22px;margin:12px 0 25px}.notification-title-icon{width:62px;height:62px;border:1px solid var(--border);background:var(--surface);border-radius:17px;display:grid;place-items:center;color:var(--accent)}.notification-title-icon svg{width:29px;height:29px}.notifications-title h1{font-size:35px;margin:8px 0 10px}.notifications-title p{font-size:15px;margin:0}.notification-workspace-note{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);padding:15px 18px;border-radius:10px;background:var(--surface);border:1px solid var(--border);margin-bottom:28px;line-height:1.7}.notification-workspace-note svg{flex:none;width:17px;color:var(--accent)}.notifications-toolbar{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);gap:15px;flex-wrap:wrap}.notifications-toolbar .notice-tabs{margin:0;border:0}.notifications-toolbar .notice-tabs button{font-size:13px;display:flex;align-items:center;gap:8px;padding:12px 15px}.notice-tabs b{font-size:10px;border:1px solid var(--border);padding:0 6px;border-radius:5px}.notifications-toolbar>.link{font-size:12px;padding:12px 0}.notifications-filter{display:flex;align-items:center;justify-content:space-between;margin:22px 0 18px;gap:15px}.notifications-filter label{display:flex;align-items:center;gap:13px}.notifications-filter .select{min-height:39px;font-size:12px;min-width:160px}.notifications-filter>span{font-size:12px;color:var(--muted)}.notifications-list{background:var(--surface);border:1px solid var(--border);border-radius:13px;overflow:hidden}.notifications-list .notice-item{padding:24px;gap:17px}.notifications-list .notice-item:last-child{border-bottom:0}.notifications-list .notice-copy strong{font-size:15px}.notifications-list .notice-copy p{font-size:14px;line-height:1.7;margin:7px 0 13px}.notifications-list .notice-actions button{font-size:12px;min-height:30px}.notifications-list .material-empty{border:0}.notification-footnote{font-size:12px;line-height:1.8;margin-top:20px;max-width:800px}
html[data-theme=dark] .material-feature{background:#112b40;border-color:#284a61;color:#d1eafa}html[data-theme=dark] .material-feature h2{color:#e1f3ff}html[data-theme=dark] .material-feature p,html[data-theme=dark] .material-feature small{color:#b8d2e4}html[data-theme=dark] .material-feature-label{color:#92c8e4}html[data-theme=dark] .feature-fractions i{background:#244760;border-color:#4a7290}html[data-theme=dark] .feature-fractions i:first-child{background:#54b4d8;border-color:#8fd5ed}html[data-theme=dark] .material-art{filter:brightness(.85)}html[data-theme=dark] .material-save[aria-pressed=true]{background:#3b3119;color:#f3ce75}html[data-theme=dark] .material-memory button.matched{background:#173b31;color:#b8ebd8;border-color:#3f8c72}
@media(max-width:1150px){.materials-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.material-detail-layout{grid-template-columns:minmax(0,1fr)}.material-learning-goal{max-width:none}.material-feature{padding:26px}.feature-fractions{padding:10px}}
@media(max-width:850px){.unified-rail:not(.open) .notification-rail .rail-text{display:none}.unified-rail:not(.open) .notification-rail a{justify-content:center;position:relative}.unified-rail:not(.open) .notification-rail-count{position:absolute;right:0;top:2px;font-size:8px;padding:0 4px}.materials-heading-links{align-items:flex-start}.materials-page-heading{flex-direction:column;align-items:flex-start}.material-feature{grid-template-columns:1fr}.feature-fractions{display:none}.material-filters{grid-template-columns:1fr 1fr}.material-search{grid-column:1/-1}.notification-title-icon{display:none}.notifications-title h1{font-size:29px}.materials-content{padding-top:24px}}
@media(max-width:600px){.materials-grid{grid-template-columns:1fr;gap:18px}.materials-page-heading h1{font-size:29px}.materials-page-heading p{font-size:14px}.material-feature{padding:23px}.material-feature h2{font-size:25px}.material-feature .btn{white-space:normal;text-align:left;font-size:12px}.material-shelf-tabs{gap:18px}.material-shelf-tabs button{font-size:12px}.material-format-tabs{gap:7px}.material-format-tabs button{font-size:11px;padding:8px 10px}.material-format-tabs button svg{width:15px}.material-filters{gap:11px}.material-filters label{font-size:11px}.material-filters .input,.material-filters .select{font-size:12px;min-width:0}.material-results-heading>span{display:none}.material-art{height:150px}.material-detail-heading{flex-direction:column;align-items:flex-start;gap:16px}.material-detail-heading h1{font-size:27px}.material-puzzle{padding:20px}.material-puzzle h2{font-size:22px}.puzzle-options{gap:7px}.puzzle-options button{font-size:14px;padding:18px 6px;overflow-wrap:anywhere}.material-memory{gap:8px;grid-template-columns:repeat(2,minmax(0,1fr))}.material-memory button{min-height:75px;font-size:21px}.material-reading{padding:22px}.material-success{padding:35px 20px}.material-success h2{font-size:25px}.notifications-title p{font-size:14px}.notifications-toolbar{display:block}.notifications-toolbar .notice-tabs{gap:0;display:flex}.notifications-toolbar .notice-tabs button{font-size:11px;padding:12px 10px}.notifications-filter label{display:grid;gap:6px;font-size:11px}.notifications-filter .select{min-width:0;width:140px}.notifications-filter>span{font-size:11px}.notifications-list .notice-item{padding:19px 15px;gap:11px}.notifications-list .notice-icon{width:30px;height:30px}.notifications-list .notice-copy strong{font-size:14px}.notifications-list .notice-copy p{font-size:13px}.notifications-list .notice-actions{gap:13px}.notification-workspace-note{padding:12px;font-size:11px}.material-empty{padding:35px 18px}.material-empty h2,.material-empty h3{font-size:21px}}
@media(prefers-reduced-motion:reduce){.material-card{transition:none}.material-card:hover{transform:none}}