:root{--paper-white:#fcfaf6;--cream:#e7d9c1;--cream-soft:#f6ebda;--cream-deep:#d5c5ab;--pasture-tint:#dbeedf;--pasture:#4d7455;--pasture-soft:#729779;--pasture-deep:#2d5139;--ember:#bd5d26;--ember-deep:#9f4718;--ember-soft:#d39471;--ink:#2d2823;--ink-soft:#5c554f;--ink-faint:#88827c;--hairline:#ddd8d2;--hairline-strong:#ccc6bf;--oxblood:#813426;--oxblood-deep:#682418;--warning:#ae8446;--warning-bg:#f6e2c4;--warning-ink:#604018;--error:#50667c;--error-bg:#d4dfeb;--error-ink:#283c51;--success:#4d7455;--success-bg:#d7ebda;--success-ink:#2d5139;--bg:var(--paper-white);--bg-raised:#fefcf9;--bg-sunken:#f4efe7;--bg-cream:var(--cream);--bg-cream-soft:var(--cream-soft);--fg:var(--ink);--fg-muted:var(--ink-soft);--fg-faint:var(--ink-faint);--fg-on-ember:var(--paper-white);--fg-on-pasture:var(--paper-white);--border:var(--hairline);--border-strong:var(--hairline-strong);--accent:var(--ember);--accent-deep:var(--ember-deep);--brand:var(--pasture);--focus-ring:0 0 0 2px var(--paper-white),0 0 0 4px 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rgba(45,40,35,.06);--shadow-lg:0 18px 40px rgba(45,40,35,.12),0 4px 8px rgba(45,40,35,.06);--shadow-inset:inset 0 1px 0 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a:hover{background:rgba(31,30,36,.05);color:var(--fg-1)}.calm .nav a.active{background:var(--handbook-butter);color:var(--fg-1);font-weight:600;box-shadow:inset 0 0 0 1.5px var(--handbook-ink)}.calm .nav a .ic{width:16px;height:16px;flex:none;color:var(--fg-3)}.calm .nav a.active .ic{color:var(--handbook-ink)}.calm .nav a .count{margin-left:auto;font-size:11px;font-variant-numeric:tabular-nums;color:var(--fg-3)}.calm .pill{display:inline-flex;align-items:center;gap:5px;padding:2px 9px;font-family:var(--font-handbook-sans);font-size:10.5px;letter-spacing:.1em;font-weight:600;text-transform:uppercase;border:1.2px solid var(--calm-rule-bold);background:transparent;color:var(--fg-2);border-radius:9999px;transform:none!important;box-shadow:none}.calm .pill.sage{background:var(--handbook-sage-soft)}.calm .pill.mustard,.calm .pill.sage{border-color:var(--handbook-ink);color:var(--handbook-ink)}.calm .pill.mustard{background:var(--handbook-mustard)}.calm 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var(--handbook-ink);flex:none;display:inline-block}.calm .dot.empty{background:transparent}.calm .dot.draft{background:var(--handbook-mustard)}.calm .dot.done{background:var(--handbook-sage)}.calm .dot.active{background:var(--handbook-ember)}.calm .dot.muted{background:var(--handbook-pool-deep)}.calm .tape,.calm .tape-strip{display:none!important}.calm .chip,.calm [class*=tilt-]{transform:none!important}.calm .chip{box-shadow:none;border-width:1.2px;padding:2px 9px;font-size:10.5px}@media (prefers-reduced-motion:reduce){.calm *{transition-duration:.01ms!important;animation-duration:.01ms!important}}.leftrail-item{transition:background .12s ease-out,color .12s ease-out}.leftrail-item:hover:not([aria-current]){background:var(--bg-sunken)!important;color:var(--ink)!important}.rd-switcher-row{transition:background .12s ease-out}.rd-switcher-row:focus-visible,.rd-switcher-row:hover{background:var(--bg-sunken)!important}.rd-switcher-row:focus-visible,[data-chrome=leftrail] button:focus-visible,[data-chrome=topbar] button:focus-visible{outline:none;box-shadow:var(--focus-ring)}[data-chrome-shell=authenticated],[data-chrome=shell-body],[data-chrome=shell-body]>:not([data-chrome=leftrail]):not(.authenticated-chrome-scrim){min-width:0}.topbar-menu{display:none!important}.topbar-menu-glyph{display:inline-flex;width:18px;flex-direction:column;gap:4px}.topbar-menu-glyph span{display:block;height:2px;border-radius:var(--r-pill);background:currentColor}@media (min-width:901px){[data-chrome=leftrail][data-rail-compact=true]{width:76px!important;padding:22px 10px 16px!important}[data-chrome=leftrail][data-rail-compact=true] [data-rail-label]{display:none!important}[data-chrome=leftrail][data-rail-compact=true] nav button,[data-chrome=leftrail][data-rail-compact=true]>button{justify-content:center!important;padding-left:0!important;padding-right:0!important}}@media (max-width:900px){.topbar-menu{display:inline-flex!important;flex:0 0 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18px!important}.lesson-canvas-inner{padding:28px 18px 72px!important}.lesson-workspace-main{flex-direction:column!important;overflow:auto!important}.lesson-outline-rail{width:100%!important;max-height:260px;flex:0 0 auto!important;border-right:none!important;border-bottom:1px solid var(--hairline)}.lesson-canvas-shell{flex:1 0 auto!important;min-width:0}[data-screen=home] main{padding:24px 18px 72px!important}.home-panel{padding:22px 18px 20px!important}.home-panel-cta{width:100%;justify-content:center}}.home-fork,.home-panel-cta{transition:box-shadow .15s ease-out,transform .15s ease-out}.home-fork:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.home-panel-cta:hover{background:var(--ember-deep)!important;border-color:var(--ember-deep)!important}.home-course-row,.home-recent-row{transition:background .12s 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