:root{color-scheme:light;--surface: #f7f6f4;--raised: #efebe5;--card: #ffffff;--card-soft: #fbfaf8;--ink: #161a1d;--ink-2: #3b4340;--muted: #5c6662;--line: #ded8cf;--line-soft: #ebe6df;--line-dashed: #a39b8f;--copper: #c98a5e;--copper-strong: #8a5632;--copper-deep: #6b4126;--copper-tint: #f1e3d6;--copper-on-pine: #c98a5e;--on-primary: #f7f6f4;--pine: #102325;--pine-raised: #19302f;--pine-line: #2c4446;--on-pine: #f7f6f4;--on-pine-muted: #b9c4c0;--sage: #6e8a80;--sage-tint: #e3ebe7;--sage-ink: #1f3b33;--data-strong: #2f5d57;--data-soft: #c9d9d2;--success: #2f7a5b;--success-ink: #24624a;--warning: #8f6410;--warning-ink: #6b4a0b;--error: #b3412f;--error-ink: #8a2f21;--mastery-1: #d99a6c;--mastery-1-ink: #2b1709;--mastery-2: #f1e3d6;--mastery-2-ink: #4a2c15;--mastery-3: #c9d9d2;--mastery-3-ink: #1f3b33;--mastery-4: #2f5d57;--mastery-4-ink: #f7f6f4;--font: "Manrope", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;--font-heading: var(--font);--fs-body: 15px;--lh-body: 1.5;--r-input: 8px;--r-btn: 10px;--r-card: 16px;--r-tile: 14px;--r-pill: 999px;--s-1: 4px;--s-2: 8px;--s-3: 12px;--s-4: 16px;--s-5: 20px;--s-6: 24px;--s-7: 28px;--s-8: 32px;--focus: 3px solid var(--copper-strong);--sidebar-w: 248px}@media (prefers-color-scheme: dark){:root{color-scheme:dark;--surface: #0b1416;--raised: #1a2a2e;--card: #132226;--card-soft: #0f1c1f;--ink: #ede8e1;--ink-2: #cdd4d0;--muted: #a3aeaa;--line: #2a3c40;--line-soft: #1f3034;--line-dashed: #4f6266;--copper: #c98a5e;--copper-strong: #dea174;--copper-deep: #e9b994;--copper-tint: #3a2a1e;--on-primary: #0b1416;--pine: #0e1d20;--pine-raised: #172a2d;--pine-line: #2c4446;--on-pine: #f7f6f4;--on-pine-muted: #b9c4c0;--sage-tint: #1b3230;--sage-ink: #cfe2da;--data-strong: #5b9c91;--data-soft: #2e4a46;--success: #5fb48d;--success-ink: #7fcaa6;--warning: #d4a54a;--warning-ink: #e3bd6e;--error: #e07a66;--error-ink: #ef9a88}}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--surface);color:var(--ink);font-family:var(--font);font-size:var(--fs-body);line-height:var(--lh-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3,h4,p{margin:0}h1,h2,h3,.page-title,.section-title{font-family:var(--font-heading)}a{color:var(--copper-strong);font-weight:700;text-decoration:none}a:hover{color:var(--copper-deep);text-decoration:underline;text-underline-offset:3px}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}img{display:block;max-width:100%}:focus-visible{outline:var(--focus);outline-offset:2px}.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.skip-link{position:absolute;left:12px;top:-60px;z-index:100;padding:10px 14px;border-radius:var(--r-btn);background:var(--ink);color:var(--surface)}.skip-link:focus{top:12px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--copper-strong)}.eyebrow--pine{color:var(--copper-on-pine)}.eyebrow--subject{letter-spacing:.12em}.page-title{font-weight:800;font-size:34px;line-height:1.12;letter-spacing:-.025em}.section-title{font-weight:800;font-size:20px;letter-spacing:-.01em;line-height:1.3}.muted{color:var(--muted)}.ink-2{color:var(--ink-2)}.small{font-size:13px}.text-14{font-size:14px}.strong{font-weight:800}.bold{font-weight:700}.num{font-variant-numeric:tabular-nums}.text-error{color:var(--error)}.text-success{color:var(--success)}.stack{display:flex;flex-direction:column}.row{display:flex;align-items:center}.wrap{flex-wrap:wrap}.between{justify-content:space-between}.baseline{align-items:baseline}.gap-4{gap:4px}.gap-6{gap:6px}.gap-8{gap:8px}.gap-10{gap:10px}.gap-12{gap:12px}.gap-14{gap:14px}.gap-16{gap:16px}.gap-20{gap:20px}.gap-24{gap:24px}.grow{flex:1 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ease,color .15s ease}.btn:hover{text-decoration:none}.btn--sm{min-height:44px;padding:0 14px;font-size:14px}.btn--xs{min-height:36px;padding:0 12px;font-size:13px;border-radius:8px}.btn--block{width:100%}.btn--primary{background:var(--copper-strong);color:var(--on-primary)}.btn--primary:hover{background:var(--copper-deep);color:var(--on-primary)}.btn--secondary{border-color:var(--ink);color:var(--ink)}.btn--secondary:hover,.btn--tertiary{background:var(--raised);color:var(--ink)}.btn--tertiary:hover{background:var(--line-soft);color:var(--ink)}.btn--tint{background:var(--copper-tint);color:var(--ink)}.btn--tint:hover{color:var(--ink);background:#ead3c0}.btn--outline{border-color:var(--line);background:var(--card);color:var(--ink)}.btn--outline:hover{border-color:var(--ink-2);color:var(--ink)}.btn--on-pine{background:var(--on-pine);color:var(--pine);font-weight:800;box-shadow:inset 0 -3px 0 var(--copper)}.btn--on-pine:hover{background:#fff;color:var(--pine)}.btn--on-pine:focus-visible{outline:3px solid var(--on-pine);outline-offset:2px}.btn--icon{width:44px;min-width:44px;height:44px;min-height:44px;padding:0}.btn[disabled],.btn[aria-disabled=true]{opacity:.55;cursor:not-allowed}.link-btn{background:none;border:0;padding:0;color:var(--copper-strong);font-weight:700;font-size:14px;min-height:32px;cursor:pointer}.link-btn:hover{color:var(--copper-deep);text-decoration:underline;text-underline-offset:3px}.chip{display:inline-flex;align-items:center;gap:6px;min-height:40px;padding:0 16px;border-radius:var(--r-pill);border:1.5px solid var(--line);background:var(--card);color:var(--ink);font-weight:700;font-size:14px;white-space:nowrap}.chip[aria-pressed=true],.chip[aria-selected=true],.chip[aria-checked=true],.chip.is-active{background:var(--ink);border-color:var(--ink);color:var(--surface)}.chip--sm{min-height:36px;padding:0 12px;font-size:13px}.chip--square{border-radius:var(--r-btn);padding:0 12px}.chip--square[aria-pressed=true]{background:var(--copper-tint);border-color:var(--copper-strong);color:var(--ink)}.chip-row{display:flex;flex-wrap:wrap;gap:6px}.suggest{border:1px solid var(--line);background:var(--card);border-radius:var(--r-pill);padding:6px 12px;min-height:36px;font-size:13px;font-weight:600;color:var(--ink)}.suggest:hover{border-color:var(--copper)}.segmented{display:inline-flex;gap:4px;background:var(--raised);padding:4px;border-radius:var(--r-btn);max-width:100%;overflow-x:auto;scrollbar-width:none}.segmented button{white-space:nowrap}.segmented button{border:0;background:transparent;border-radius:7px;padding:6px 12px;min-height:36px;font-size:14px;font-weight:600;color:var(--muted)}.segmented button[aria-selected=true],.segmented button[aria-pressed=true]{background:var(--card);color:var(--ink);font-weight:700;box-shadow:0 1px #161a1d0a}@media (max-width: 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var(--line);color:var(--ink-2);white-space:nowrap;line-height:1.5}.pill--md{font-size:13px}.pill--success{border-color:var(--success);color:var(--success-ink)}.pill--warning{border-color:var(--warning);color:var(--warning-ink)}.pill--error{border-color:var(--error);color:var(--error-ink)}.pill--copper{border-color:var(--copper);color:var(--copper-deep)}.pill--neutral{border-color:var(--line);color:var(--ink-2)}.pill--solid-copper{background:var(--copper-strong);border-color:var(--copper-strong);color:var(--on-primary)}.pill--tag{border-radius:6px;padding:1px 8px}.badge-count{margin-left:auto;font-size:12px;font-weight:800;background:var(--copper-strong);color:var(--on-primary);border-radius:var(--r-pill);padding:0 8px;line-height:1.6}.source-badge{font-size:12px;font-weight:700;padding:2px 10px;border-radius:var(--r-pill);white-space:nowrap}.source-badge--teacher{background:var(--copper-tint);color:var(--copper-deep)}.source-badge--library{background:var(--sage-tint);color:var(--sage-ink)}.source-badge--mine{background:var(--raised);color:var(--ink-2)}.avatar{width:36px;height:36px;flex-shrink:0;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;background:var(--sage-tint);color:var(--sage-ink)}.avatar--sm{width:30px;height:30px;font-size:12px}.avatar--md{width:34px;height:34px;font-size:12px}.avatar--copper{background:var(--copper-tint);color:var(--copper-deep)}.avatar--raised{background:var(--raised);color:var(--ink-2)}.avatar--white{background:var(--card);color:var(--copper-deep)}.icon-tile{width:40px;height:40px;flex-shrink:0;border-radius:var(--r-btn);display:inline-flex;align-items:center;justify-content:center}.tone-copper{background:var(--copper-tint);color:var(--copper-strong)}.tone-sage{background:var(--sage-tint);color:var(--sage-ink)}.tone-raised{background:var(--raised);color:var(--ink)}.tone-pine{background:var(--pine);color:var(--on-pine)}.bar{display:block;height:8px;border-radius:var(--r-pill);background:var(--raised);overflow:hidden}.bar--thin{height:6px}.bar--thick{height:10px}.bar>span{display:block;height:100%;border-radius:var(--r-pill);background:var(--data-strong)}.bar--copper>span{background:var(--copper)}.bar-stack{display:flex;height:10px;border-radius:var(--r-pill);overflow:hidden;gap:2px}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}.table{width:100%;border-collapse:collapse;font-size:14px}.table th{text-align:left;color:var(--muted);font-size:13px;font-weight:700;padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap}.table td{padding:12px 16px;border-bottom:1px solid var(--line-soft);vertical-align:middle}.table tbody tr:last-child td{border-bottom:0}.table--compact th,.table--compact td{padding:9px 10px}.table .right{text-align:right}.table .center{text-align:center}.table tbody tr:hover td{background:var(--card-soft)}.pine,.tone-pine,.timer,.flash__back,.signin__aside,.video{--copper: var(--copper-on-pine)}.pine{position:relative;overflow:hidden;background:var(--pine);color:var(--on-pine);border-radius:var(--r-card);padding:22px;display:flex;flex-direction:column;gap:14px}.pine>*:not(.arcs){position:relative}.pine .muted,.pine p{color:var(--on-pine-muted)}.pine h2,.pine h3{color:var(--on-pine)}.pine-item{display:flex;justify-content:space-between;gap:12px;padding:10px 12px;background:var(--pine-raised);border:1px solid 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18px;display:flex;flex-direction:column;gap:4px}.stat__label{font-size:14px;color:var(--muted);font-weight:600}.stat__value{font-weight:800;font-size:32px;line-height:1.1;letter-spacing:-.02em}.stat__sub{font-size:13px;color:var(--muted)}.stat__sub--good{color:var(--success);font-weight:700}.stat__sub--bad{color:var(--error);font-weight:700}.heat{display:grid;gap:4px;font-size:13px}.heat__col{text-align:center;font-weight:800;color:var(--ink-2);padding-bottom:4px;font-size:12px;line-height:1.3;-webkit-hyphens:auto;hyphens:auto;overflow-wrap:break-word;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;align-self:end}.heat__name{display:flex;align-items:center;font-weight:700;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.heat__cell{display:flex;align-items:center;justify-content:center;height:34px;border-radius:6px;font-weight:800;border:0;font-size:13px}.heat__cell:hover{outline:2px solid var(--ink);outline-offset:1px}.heat__avg{padding-top:6px;border-top:1px solid var(--line-soft);margin-top:4px;font-weight:800;text-align:center}.m1{background:var(--mastery-1);color:var(--mastery-1-ink)}.m2{background:var(--mastery-2);color:var(--mastery-2-ink)}.m3{background:var(--mastery-3);color:var(--mastery-3-ink)}.m4{background:var(--mastery-4);color:var(--mastery-4-ink)}.legend{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--ink-2)}.legend span{display:inline-flex;align-items:center;gap:6px}.swatch{width:14px;height:14px;border-radius:4px;display:inline-block;flex-shrink:0}.path{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px}.path__step{display:flex;flex-direction:column;gap:2px;padding:12px;border-radius:12px;background:var(--surface);border:1px dashed var(--line-dashed);color:var(--ink-2)}.path__step--done{background:var(--sage-tint);color:var(--sage-ink);border:1px solid transparent}.path__step--current{background:var(--copper-tint);border:1.5px solid var(--copper-strong);color:var(--ink)}.path__step--solid{border-style:solid;border-color:var(--line)}.tool{display:flex;flex-direction:column;gap:4px;padding:14px;border-radius:12px;border:1.5px solid var(--line);color:var(--ink);text-decoration:none;background:var(--card);text-align:left}.tool:hover{border-color:var(--copper-strong);text-decoration:none;color:var(--ink)}.tool[aria-pressed=true]{background:var(--copper-tint);border-color:var(--copper-strong)}.tool strong{font-weight:800}.tool span{font-size:13px;color:var(--muted);font-weight:500}.feed-item{display:flex;gap:10px;font-size:14px}.dialog-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#10232573;z-index:60;display:flex;align-items:flex-start;justify-content:center;padding:6vh 16px 16px;overflow-y:auto}.dialog{width:100%;max-width:560px;background:var(--card);border-radius:18px;border:1px solid var(--line);box-shadow:0 24px 60px #10232540;display:flex;flex-direction:column}.dialog__head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:22px 24px 14px;border-bottom:1px solid var(--line-soft)}.dialog__body{padding:18px 24px;display:flex;flex-direction:column;gap:16px}.dialog__foot{padding:16px 24px 22px;display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px;border-top:1px solid var(--line-soft)}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%);z-index:80;display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:12px;background:var(--pine);color:var(--on-pine);font-size:14px;font-weight:700;box-shadow:0 10px 30px #1023254d;max-width:calc(100vw - 32px)}.note{padding:10px 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9;border-radius:14px;overflow:hidden;background:var(--pine);color:var(--on-pine);display:flex;align-items:center;justify-content:center}.video__play{width:72px;height:72px;border-radius:50%;background:var(--copper);color:var(--pine);border:0;display:inline-flex;align-items:center;justify-content:center;position:relative}.video__bar{position:absolute;left:16px;right:16px;bottom:14px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--on-pine-muted)}.video__bar .bar{flex:1;background:var(--pine-line)}.video__bar .bar>span{background:var(--copper)}.qna__q{list-style:none;display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:16px 20px;cursor:pointer;min-height:44px}.qna__q::-webkit-details-marker{display:none}.qna__q:hover{background:var(--card-soft)}.qna[open] .qna__chev{transform:rotate(180deg)}.qna__chev{margin-top:4px;transition:transform .15s ease;color:var(--muted)}.qna__a{padding:0 20px 18px}.match{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,3fr);gap:12px}.match__item{min-height:52px;padding:10px 14px;border-radius:12px;border:1.5px solid var(--line);background:var(--card);color:var(--ink);text-align:left;font-weight:700;font-size:14px}.match__item--def{font-weight:500}.match__item[aria-pressed=true]{border-color:var(--copper-strong);background:var(--copper-tint)}.match__item.is-matched{background:var(--sage-tint);border-color:transparent;color:var(--sage-ink);opacity:.8}.match__item.is-wrong{border-color:var(--error)}.match__item:disabled{cursor:default}@media (max-width: 600px){.match{grid-template-columns:1fr}}.textbook{background:var(--card-soft);border:1px solid var(--line-soft);border-radius:10px;padding:24px 28px;font-family:Georgia,Times New Roman,serif;font-size:16px;line-height:1.7;color:var(--ink-2);display:flex;flex-direction:column;gap:12px}.textbook__lead:first-line{font-weight:700}.grade-input{width:56px;min-height:36px;border:1px solid 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6px;width:190px;max-width:46vw}.role-input:hover{border-color:var(--line)}.role-input:focus-visible{border-color:var(--copper-strong);background:var(--card)}.topic-picker{position:relative;max-height:360px;overflow-y:auto;display:flex;flex-direction:column;gap:2px;padding:6px;border:1px solid var(--line);border-radius:12px;background:var(--card);font-weight:400}.topic-picker__group{display:flex;flex-direction:column;gap:2px}.topic-picker__heading{margin:6px 0 2px;padding:4px 10px;font-size:13px;font-weight:800;color:var(--muted);overflow-wrap:anywhere}.topic-picker__option{display:block;width:100%;min-height:36px;padding:7px 10px;border:0;border-radius:8px;background:none;color:var(--ink);font:inherit;font-size:14px;line-height:1.35;text-align:left;white-space:normal;overflow-wrap:anywhere;cursor:pointer}.topic-picker__option:hover:not([aria-disabled=true]){background:var(--raised)}.topic-picker__option:focus-visible{outline:2px solid var(--copper-strong);outline-offset:-2px}.topic-picker__option[aria-selected=true]{background:var(--copper-tint);font-weight:700}.topic-picker__option[aria-disabled=true]{color:var(--muted);cursor:default}.topic-picker__note{font-size:12px;color:var(--muted);font-weight:400}.preview-frame{display:flex;flex-direction:column;min-height:100%;border:3px dashed var(--copper);border-radius:var(--r-card);margin:var(--s-3);background:repeating-linear-gradient(135deg,var(--surface) 0 18px,var(--card-soft) 18px 36px)}.preview-banner{position:sticky;top:0;z-index:20;display:flex;flex-wrap:wrap;align-items:center;gap:var(--s-2) var(--s-3);padding:var(--s-3) var(--s-4);background:var(--pine);color:var(--on-pine);border-radius:calc(var(--r-card) - 4px) calc(var(--r-card) - 4px) 0 0}.preview-banner__text{flex:1 1 280px;min-width:0}.preview-banner__note{color:var(--on-pine-muted);flex:1 1 240px}.preview-nav{display:flex;flex-wrap:wrap;gap:var(--s-1);padding:var(--s-2) var(--s-4);background:var(--copper-tint);border-bottom:1px solid var(--line)}.preview-nav__item{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--r-pill);color:var(--ink);font-size:14px;font-weight:600;text-decoration:none}.preview-nav__item:hover{background:var(--card)}.preview-nav__item.is-active{background:var(--copper-strong);color:var(--on-primary)}.preview-frame__body{flex:1}.preview-off{display:inline-flex;cursor:not-allowed;border-radius:var(--r-btn)}.preview-off:focus-visible{outline:var(--focus);outline-offset:2px}.preview-off>button[disabled]{pointer-events:none}.review-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:8px}.review-grid__item{width:100%;min-height:56px;display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:8px 12px;border-radius:10px;border:1.5px dashed var(--line);background:var(--card);color:var(--ink);text-align:left}.review-grid__item.is-answered{border-style:solid;border-color:transparent;background:var(--sage-tint);color:var(--sage-ink)}.review-grid__item.is-flagged{border:1.5px dashed var(--copper-strong);background:var(--copper-tint);color:var(--ink)}.review-grid__item .small{display:inline-flex;align-items:center;gap:4px}.result-row{width:100%;padding:12px 20px;background:none;border:0;text-align:left;min-height:52px;color:var(--ink)}.result-row__body{padding:0 20px 16px 60px}@media (max-width: 600px){.result-row{flex-wrap:wrap;padding:12px 16px}.result-row__body{padding:0 16px 16px}}.q-label{white-space:nowrap;min-width:0;overflow:hidden;text-overflow:ellipsis}.q-label__short{display:none}@media (max-width: 520px){.q-label__long{display:none}.q-label__short{display:inline}}.store-signin .signin__main{gap:28px;padding-top:28px}.pin-dots{display:flex;gap:12px;justify-content:center;padding:6px 0}.pin-dots 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14px;border-radius:10px;font-weight:600;color:var(--error-ink);background:color-mix(in srgb,var(--error) 12%,var(--card));border:1px solid var(--error)}.qr-box{background:#fff;padding:12px;border-radius:12px;border:1px solid var(--line);width:max-content}@media print{.shared-bar,.no-print{display:none!important}}.on-shift{max-width:640px}.obs-task{width:100%;display:flex;align-items:center;gap:12px;background:none;border:0;border-top:1px solid var(--line);font:inherit;color:inherit;cursor:pointer;min-height:56px}.obs-task:hover{background:var(--raised)}.tick-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.tick-row{display:flex;align-items:flex-start;gap:12px;padding:14px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--card);cursor:pointer;font-size:15px;line-height:1.4;touch-action:manipulation}.tick-row input{width:22px;height:22px;flex:none;margin-top:1px;accent-color:var(--pine)}.tick-row:has(input:checked){border-color:var(--pine);background:var(--pine-tint, var(--raised))}.on-shift__actions{display:grid;grid-template-columns:2fr 1fr;gap:10px}.on-shift__actions .btn{min-height:52px;font-weight:800;justify-content:center}.starter-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}.meter{height:8px;border-radius:99px;background:var(--raised);overflow:hidden}.meter span{display:block;height:100%;background:var(--pine);border-radius:inherit}.meter--big{height:12px}.first-weeks__list{list-style:none;margin:0;padding:0}.first-weeks__list .card__row{min-height:60px}@media (max-width: 520px){.on-shift__actions,.starter-grid{grid-template-columns:1fr}}.starter-card{display:flex;flex-direction:row;align-items:center;gap:12px;padding:16px;text-decoration:none}.starter-card .grow{flex:1 1 auto;min-width:0}@media (max-width: 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var(--line)}.store-table td,.store-table th{border:0;padding:0}.store-table .store-table__rank{grid-column:1;grid-row:1 / span 4}.store-table__name{grid-column:2 / 4}.store-table td[data-label]:not(.store-table__rank):before{content:attr(data-label) ": ";color:var(--muted);font-size:13px}.store-table td:not(.store-table__rank){font-size:14px}.cert-buckets{grid-template-columns:repeat(2,1fr)}}