html[data-skin=classroom]{--sorora-primary:#6f6358;--sorora-primary-container:#8c7d6f;--sorora-on-primary:#f8f2e9;--sorora-secondary:#8c7d6f;--sorora-tertiary:#a0613f;--sorora-tertiary-container:#b8764f;--sorora-action-orange:#a0613f;--background:#eee2d2;--surface:#f8f2e9;--surface-2:#f3eadd;--surface-solid:#f8f2e9;--surface-container:#efe4d5;--surface-container-low:#fbf7f0;--surface-container-high:#e3d5c3;--border:#e2d5c4;--border-subtle:#ece1d2;--text:#3d3530;--text-muted:#6f6358;--text-dim:#8c7d6f;--brand:#6f6358;--brand-dark:#3d3530;--accent:#a0613f;--accent-dark:#8a4f31;--warm:#e3c7a8;--user-bubble:#6f6358;--ai-bubble:#f8f2e9;--parent-accent:#6f6358;--ok:#4f6a40;--warn:#8a5f2c;--bad:#8c3d33;--bad-solid:#8c3d33;--sidebar-active-fg:#3d3530;--headline-grad:linear-gradient(120deg,#8c6f58,#8c6f58);--card-glass:#f8f2e9;--modal-backdrop:rgba(61,53,48,.35);--threejs-bg:radial-gradient(ellipse at 50% 40%,#f8f2e9 0%,#f1e6d8 60%,#eadcca 100%);--shadow-1:0 14px 28px -20px rgba(90,70,50,.5);--shadow-2:0 30px 60px -30px rgba(90,70,50,.45);--rim:inset 0 0 0 0 transparent;--mm-scrim:rgba(61,53,48,.2);--mm-surface-bg:#f8f2e9;--mm-panel-bg:#fbf7f0;--mm-panel-soft:rgba(111,99,88,.06);--mm-panel-soft-hi:rgba(111,99,88,.12);--mm-divider:#ece1d2;--mm-orb-bg:#f8f2e9;--mm-orb-stroke:rgba(111,99,88,.3);--mm-arc-track:#e6d9c8;--mm-center-dot:#6f6358;--mm-center-glow:rgba(111,99,88,.18);--mm-neural-bg:rgba(111,99,88,.08);--mm-header-title-grad:linear-gradient(135deg,#6f6358,#8c6f58);--mm-mastery-meta:#4f6a40;--mm-error-text:#8c3d33;--sh-subj-pill:var(--shadow-1);--sh-tab-chip:var(--shadow-1);--sh-focus-banner:var(--shadow-1);--sh-mm-drawer:var(--shadow-2);--sh-hero-panel:var(--shadow-2);--fill-subj-card:#f8f2e9;--glass-opaque-fill:#f8f2e9;--skin-canvas:linear-gradient(160deg,#f1e6d8,#eadcca);--skin-rule:#ece1d2;--skin-margin:hsla(12,41%,58%,.55);--skin-emphasis:#8c6f58;--skin-highlight:transparent;--skin-track:#e6d9c8;--skin-fill:#6f6358;--skin-fill-soft:#b3a391;--skin-missed:#c07a68;--skin-future:#b3a391;--skin-radius-card:20px;--skin-radius-btn:14px;--skin-line:1px;color-scheme:light}html.dark[data-skin=classroom]{--sorora-primary:#d9c7b0;--sorora-primary-container:#b3a391;--sorora-on-primary:#1d1916;--sorora-secondary:#c4b6a6;--sorora-tertiary:#d48a63;--sorora-tertiary-container:#b8764f;--sorora-action-orange:#d48a63;--background:#1e1a16;--surface:#2a241f;--surface-2:#26201c;--surface-solid:#2a241f;--surface-container:#2f2823;--surface-container-low:#231e1a;--surface-container-high:#3b332c;--border:#3b332c;--border-subtle:#322a24;--text:#efe5d8;--text-muted:#c4b6a6;--text-dim:#9a8b7b;--brand:#d9c7b0;--brand-dark:#b3a391;--accent:#d48a63;--accent-dark:#b8764f;--warm:#5a4636;--user-bubble:#d9c7b0;--ai-bubble:#2a241f;--parent-accent:#d9c7b0;--ok:#9fd3a8;--warn:#e8c48a;--bad:#f0a294;--bad-solid:#b85a4e;--sidebar-active-fg:#efe5d8;--headline-grad:linear-gradient(120deg,#d8b497,#d8b497);--card-glass:#2a241f;--modal-backdrop:rgba(10,8,6,.6);--threejs-bg:radial-gradient(ellipse at 50% 40%,#2a241f 0%,#221d19 60%,#1b1714 100%);--shadow-1:0 14px 28px -20px rgba(0,0,0,.7);--shadow-2:0 30px 60px -30px rgba(0,0,0,.8);--rim:inset 0 0 0 0 transparent;--mm-scrim:rgba(10,8,6,.6);--mm-surface-bg:#2a241f;--mm-surface-border:#3b332c;--mm-text:#efe5d8;--mm-text-muted:#c4b6a6;--mm-text-faint:#9a8b7b;--mm-panel-bg:#231e1a;--mm-panel-soft:hsla(34,35%,77%,.06);--mm-panel-soft-hi:hsla(34,35%,77%,.12);--mm-divider:#3b332c;--mm-orb-bg:#2a241f;--mm-orb-stroke:hsla(34,35%,77%,.4);--mm-arc-track:#3b332c;--mm-center-dot:#d9c7b0;--mm-center-glow:hsla(34,35%,77%,.2);--mm-neural-bg:hsla(34,35%,77%,.08);--mm-header-title-grad:linear-gradient(135deg,#efe5d8,#d8b497);--mm-mastery-meta:#9fd3a8;--mm-error-text:#f0a294;--sh-subj-pill:var(--shadow-1);--sh-tab-chip:var(--shadow-1);--sh-focus-banner:var(--shadow-1);--sh-mm-drawer:var(--shadow-2);--sh-hero-panel:var(--shadow-2);--fill-subj-card:#2a241f;--glass-opaque-fill:#2a241f;--skin-canvas:linear-gradient(160deg,#221d19,#1b1714);--skin-rule:#332b25;--skin-margin:hsla(13,53%,65%,.45);--skin-emphasis:#d8b497;--skin-track:#3b332c;--skin-fill:#d9c7b0;--skin-fill-soft:#6b5e52;--skin-missed:#d68c78;--skin-future:#6b5e52;color-scheme:dark}html[data-skin=classroom] body{background:var(--skin-canvas) fixed,var(--background)}html[data-skin=classroom] .intelligent-bg:before,html[data-skin=classroom] .mesh-bg:before{background:none}html[data-skin=classroom] .intelligent-bg,html[data-skin=classroom] .mesh-bg{background:var(--skin-canvas) fixed}html[data-skin=classroom] .ibg-blobs,html[data-skin=classroom] .orb-glow,html[data-skin=classroom] .organic-blob,html[data-skin=classroom] .sorora-orb{display:none!important}html[data-skin=classroom] .card,html[data-skin=classroom] .glass-lavender,html[data-skin=classroom] .glass-warm,html[data-skin=classroom] .liquid-glass{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-1);backdrop-filter:none;-webkit-backdrop-filter:none}html[data-skin=classroom] .liquid-glass:before{backdrop-filter:none;-webkit-backdrop-filter:none}html[data-skin=classroom] .glass-lavender{background:var(--surface-container)}html[data-skin=classroom] .glass-warm{background:color-mix(in srgb,var(--accent) 10%,var(--surface))}html[data-skin=classroom] .viz-glow{box-shadow:var(--shadow-1)}html[data-skin=classroom] .ghost-border{border-color:var(--border)}html[data-skin=classroom] .btn-primary,html[data-skin=classroom] .join-now-btn{background:var(--brand);color:var(--sorora-on-primary);border:0;border-radius:var(--skin-radius-btn);box-shadow:none}html[data-skin=classroom] .btn-primary:hover:not(:disabled),html[data-skin=classroom] .join-now-btn:hover{background:var(--brand-dark);box-shadow:var(--shadow-1)}html.dark[data-skin=classroom] .btn-primary:hover:not(:disabled){background:var(--text)}html[data-skin=classroom] .btn-action,html[data-skin=classroom] .orange-action-btn{background:var(--accent);color:var(--pal-on-tertiary);border-radius:var(--skin-radius-btn);box-shadow:none}html.dark[data-skin=classroom] .btn-action,html.dark[data-skin=classroom] .orange-action-btn{color:var(--sorora-on-primary)}html[data-skin=classroom] .btn-action:hover:not(:disabled,[aria-disabled=true]),html[data-skin=classroom] .orange-action-btn:hover{background:var(--accent-dark);box-shadow:var(--shadow-1)}html[data-skin=classroom] .btn-ghost{background:var(--surface-container-high);color:var(--text);border-radius:var(--skin-radius-btn)}html[data-skin=classroom] .input-field{background:var(--surface-container-low);border:1px solid var(--skin-input-edge);border-radius:var(--skin-radius-btn)}html[data-skin=classroom] .input-field:focus{box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 16%,transparent);border-color:var(--brand)}html[data-skin=classroom] :focus-visible{outline:2px solid var(--brand);outline-offset:2px}html[data-skin=classroom] .gradient-primary{background:var(--brand)}html[data-skin=classroom] .grad-brand,html[data-skin=classroom] .grad-text,html[data-skin=classroom] .gradient-heading,html[data-skin=classroom] .gradient-primary-text{background:none;-webkit-text-fill-color:currentColor;color:var(--skin-emphasis)}html[data-skin=classroom] .glow-text{text-shadow:none}html[data-skin=classroom] .topic-progress-bar{background:var(--skin-fill)}html[data-skin=classroom] .lesson-content .tts-block-active{background:color-mix(in srgb,var(--brand) 10%,transparent);border-left-color:var(--skin-margin)}html[data-skin=classroom] ::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--text) 25%,transparent)}html[data-skin=classroom] .skin-ruled{position:relative;padding-left:44px;background-image:repeating-linear-gradient(180deg,transparent 0 27px,var(--skin-rule) 27px 28px);line-height:28px}html[data-skin=classroom] .skin-ruled:after{content:"";position:absolute;left:20px;top:0;bottom:0;width:1.5px;background:var(--skin-margin);pointer-events:none}html[data-skin=classroom] .skin-tab{display:inline-block;padding:6px 14px 5px;border-radius:10px 10px 0 0;background:var(--surface);border:1px solid var(--border);border-bottom:0;font-family:var(--font-mono),monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-dim)}html[data-skin=classroom] .skin-em{font-style:italic;color:var(--skin-emphasis)}html[data-skin=classroom] .skin-missed{border:1.5px dashed var(--skin-missed);background:color-mix(in srgb,var(--skin-missed) 6%,transparent)}html[data-skin=classroom] .skin-future{border:1.5px dashed var(--skin-future);background:transparent}html[data-skin=classroom]{--pal-primary:#6f6358;--pal-primary-container:#8c7d6f;--pal-primary-fixed:#efe4d5;--pal-primary-fixed-dim:#d9c7b0;--pal-primary-soft:#b3a391;--pal-on-primary:#f8f2e9;--pal-on-primary-container:#fffbf5;--pal-on-primary-fixed:#2a221c;--pal-on-primary-fixed-variant:#5a4f45;--pal-secondary:#8c7d6f;--pal-secondary-container:#e3d5c3;--pal-secondary-fixed:#efe4d5;--pal-secondary-fixed-dim:#d6c7b4;--pal-on-secondary:#fff;--pal-on-secondary-container:#5a4f45;--pal-on-secondary-fixed:#2a221c;--pal-on-secondary-fixed-variant:#5a4f45;--pal-tertiary:#a0613f;--pal-tertiary-container:#b8764f;--pal-tertiary-fixed:#f1dccf;--pal-tertiary-fixed-dim:#e3b394;--pal-on-tertiary:#fff;--pal-on-tertiary-container:#fffbf5;--pal-on-tertiary-fixed:#3a1d0d;--pal-on-tertiary-fixed-variant:#8a4f31;--pal-surface:#f8f2e9;--pal-surface-bright:#fbf7f0;--pal-surface-dim:#e3d5c3;--pal-surface-container:#efe4d5;--pal-surface-container-high:#e9dccb;--pal-surface-container-highest:#e3d5c3;--pal-surface-container-low:#f3eadd;--pal-surface-container-lowest:#fbf7f0;--pal-surface-tint:#6f6358;--pal-surface-variant:#e3d5c3;--pal-on-surface:#3d3530;--pal-on-surface-variant:#6f6358;--pal-outline:#8c7d6f;--pal-outline-variant:#d6c7b4;--pal-background:#eee2d2;--pal-on-background:#3d3530;--pal-inverse-surface:#3d3530;--pal-inverse-on-surface:#f8f2e9;--pal-inverse-primary:#d9c7b0;--pal-brand-50:#fbf7f0;--pal-brand-100:#f3eadd;--pal-brand-200:#e3d5c3;--pal-brand-300:#d9c7b0;--pal-brand-400:#b3a391;--pal-brand-500:#8c7d6f;--pal-brand-600:#6f6358;--pal-brand-700:#5a4f45;--pal-brand-800:#3d3530;--pal-brand-900:#2a221c;--pal-accent-50:#fbf3ee;--pal-accent-100:#f1dccf;--pal-accent-200:#e3b394;--pal-accent-300:#a0613f;--pal-accent-400:#8a4f31;--pal-accent-500:#74401f;--pal-accent-600:#5c3216;--pal-accent-700:#3a1d0d;--pal-action-orange:#a0613f;--pal-action-orange-deep:#8a4f31;--pal-action-fill:#a0613f;--pal-action-fill-end:#9c5a3a;--pal-shadow-ink:#5a4632;--parent-icon:var(--parent-accent)}html[data-skin=classroom] .aura-orb{background:radial-gradient(circle at 32% 32%,color-mix(in srgb,var(--orb-highlight) 95%,transparent) 0,var(--pal-primary-fixed-dim) 18%,var(--pal-primary-container) 45%,var(--pal-primary) 100%);box-shadow:var(--shadow-1),inset 0 0 30px color-mix(in srgb,var(--orb-highlight) 30%,transparent)}html[data-skin=classroom] .lg-bg-field,html[data-skin=classroom] .lg-grid-drift{display:none!important}html[data-skin=classroom] .glow-text-lg{text-shadow:none}html[data-skin=classroom]{--sheen-highlight:transparent;--scrim-ink:var(--pal-on-surface);--feedback-correct-100:var(--ok);--feedback-correct-300:var(--ok);--feedback-correct-400:var(--ok);--feedback-correct-500:var(--ok);--feedback-correct-600:var(--ok);--feedback-correct-700:var(--ok);--feedback-correct-800:var(--ok);--feedback-success-300:var(--ok);--feedback-success-400:var(--ok);--feedback-success-500:var(--ok);--feedback-success-600:var(--ok);--feedback-success-700:var(--ok);--feedback-wrong-200:var(--bad);--feedback-wrong-300:var(--bad);--feedback-wrong-500:var(--bad);--feedback-wrong-700:var(--bad);--feedback-wrong-900:var(--bad);--feedback-danger-300:var(--bad);--feedback-danger-400:var(--bad);--feedback-danger-500:var(--bad);--feedback-danger-600:var(--bad);--feedback-danger-700:var(--bad);--feedback-caution-200:var(--warn);--feedback-caution-300:var(--warn);--feedback-caution-400:var(--warn);--feedback-caution-500:var(--warn);--feedback-caution-600:var(--warn);--feedback-caution-700:var(--warn);--feedback-nudge-300:var(--accent);--feedback-nudge-400:var(--accent);--feedback-nudge-500:var(--accent);--feedback-nudge-700:var(--accent);--feedback-info-200:var(--brand);--feedback-info-300:var(--brand);--feedback-info-400:var(--brand);--feedback-info-500:var(--brand);--feedback-info-600:var(--brand);--feedback-info-700:var(--brand);--warm-strong:var(--pal-action-orange);--warm-ink:var(--pal-accent-400);--warm-ink-deep:var(--pal-accent-400);--warm-ink-soft:var(--pal-accent-200);--board-chalk-now:var(--pal-brand-200);--join-glow-dark:var(--pal-primary);--action-glow:var(--pal-action-orange);--flame-core:var(--pal-tertiary-fixed-dim);--chip-violet-ink:var(--pal-brand-700);--mm-depth-ink:var(--shade-ink);--popover-shadow-ink:var(--pal-shadow-ink);--note-accent-end:var(--pal-primary-container);--glass-tint:var(--surface);--shade-ink:var(--pal-shadow-ink);--skin-input-edge:var(--pal-outline-variant)}html.dark[data-skin=classroom]{--glass-tint:var(--text);--shade-ink:#000;--night-veil:#0a0806;--skin-input-edge:#4a4037;--on-dark-strong:var(--text);--on-dark-text:var(--text);--on-dark-text-muted:var(--text-muted);--on-dark-dim:var(--text-dim);--on-dark-faint:var(--text-dim);--on-dark-eyebrow:var(--brand);--on-dark-panel:var(--surface);--night-sky-top:var(--surface);--night-sky-mid:var(--surface-container-low);--night-sky-base:var(--background);--night-aura:var(--surface);--night-panel-top:var(--surface-container-low);--night-panel-base:var(--background);--night-card-top:var(--surface);--night-card-base:var(--surface-container-low);--tint-ink-pale:var(--text);--tint-ink-pale-cool:var(--text)}html[data-skin=classroom]{--palette-white:#fbf7f0;--palette-black:#1b1714;--palette-slate-50:#fbf7f0;--palette-slate-100:#f3eadd;--palette-slate-200:#e9dccb;--palette-slate-300:#d6c7b4;--palette-slate-400:#b3a391;--palette-slate-500:#8c7d6f;--palette-slate-600:#6f6358;--palette-slate-700:#5a4f45;--palette-slate-800:#3d3530;--palette-slate-900:#2a221c;--palette-slate-950:#1b1714;--palette-gray-50:#fbf7f0;--palette-gray-100:#f3eadd;--palette-gray-200:#e9dccb;--palette-gray-300:#d6c7b4;--palette-gray-400:#b3a391;--palette-gray-500:#8c7d6f;--palette-gray-600:#6f6358;--palette-gray-700:#5a4f45;--palette-gray-800:#3d3530;--palette-gray-900:#2a221c;--palette-gray-950:#1b1714;--palette-zinc-50:#fbf7f0;--palette-zinc-100:#f3eadd;--palette-zinc-200:#e9dccb;--palette-zinc-300:#d6c7b4;--palette-zinc-400:#b3a391;--palette-zinc-500:#8c7d6f;--palette-zinc-600:#6f6358;--palette-zinc-700:#5a4f45;--palette-zinc-800:#3d3530;--palette-zinc-900:#2a221c;--palette-zinc-950:#1b1714;--palette-neutral-50:#fbf7f0;--palette-neutral-100:#f3eadd;--palette-neutral-200:#e9dccb;--palette-neutral-300:#d6c7b4;--palette-neutral-400:#b3a391;--palette-neutral-500:#8c7d6f;--palette-neutral-600:#6f6358;--palette-neutral-700:#5a4f45;--palette-neutral-800:#3d3530;--palette-neutral-900:#2a221c;--palette-neutral-950:#1b1714;--palette-stone-50:#fbf7f0;--palette-stone-100:#f3eadd;--palette-stone-200:#e9dccb;--palette-stone-300:#d6c7b4;--palette-stone-400:#b3a391;--palette-stone-500:#8c7d6f;--palette-stone-600:#6f6358;--palette-stone-700:#5a4f45;--palette-stone-800:#3d3530;--palette-stone-900:#2a221c;--palette-stone-950:#1b1714;--palette-violet-50:var(--pal-brand-50);--palette-violet-100:var(--pal-brand-100);--palette-violet-200:var(--pal-brand-200);--palette-violet-300:var(--pal-brand-300);--palette-violet-400:var(--pal-brand-400);--palette-violet-500:var(--pal-brand-500);--palette-violet-600:var(--pal-brand-600);--palette-violet-700:var(--pal-brand-700);--palette-violet-800:var(--pal-brand-800);--palette-violet-900:var(--pal-brand-900);--palette-violet-950:var(--pal-brand-900);--palette-purple-50:var(--pal-brand-50);--palette-purple-100:var(--pal-brand-100);--palette-purple-200:var(--pal-brand-200);--palette-purple-300:var(--pal-brand-300);--palette-purple-400:var(--pal-brand-400);--palette-purple-500:var(--pal-brand-500);--palette-purple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srgb,var(--bad-solid) 16%,var(--pal-surface));--pal-on-error-container:color-mix(in srgb,var(--bad-solid) 75%,var(--pal-on-surface));--ink-bright:var(--palette-white);--orb-highlight:var(--palette-white);--caption-box:var(--pal-inverse-surface);--board-chalk:var(--pal-surface-bright);--glow-purple:var(--cat-purple);--glow-teal:var(--cat-teal);--glow-indigo:var(--cat-blue);--glow-cyan:var(--cat-teal);--dash-field-glow:var(--background);--dash-aurora-1:transparent;--dash-aurora-2:transparent;--dash-aurora-3:transparent;--dash-aurora-4:transparent;--dash-live:var(--cat-teal);--dash-live-deep:var(--cat-teal-deep);--grad-text-deep:var(--text);--orb-core-light:var(--pal-primary);--orb-core-dark:var(--pal-on-primary-fixed);--chip-pink:var(--cat-rose);--chip-pink-strong:var(--cat-rose);--chip-pink-ink:var(--cat-rose-deep);--chip-pink-ink-soft:var(--cat-rose-deep);--lg-bg:var(--card-glass);--lg-sheen:transparent;--lg-track:color-mix(in srgb,var(--brand) 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.pr-run-aura{background:none}html[data-skin=classroom] .lesson-dock-seg-fill,html[data-skin=classroom] .lesson-dock-seg.is-active,html[data-skin=classroom] .lesson-light-ray,html[data-skin=classroom] .lesson-panel-send,html[data-skin=classroom] .lesson-rail-dot[data-state=active],html[data-skin=classroom] .lesson-rail-progress-fill,html[data-skin=classroom] .lesson-rail-pulse,html[data-skin=classroom] .lesson-rail-tick[data-state=active],html[data-skin=classroom] .lesson-threejs-card:before,html[data-skin=classroom] .lesson-video-glow:before,html[data-skin=classroom] .lg-live-dot,html[data-skin=classroom] .lg-seg.on,html[data-skin=classroom] .pr-run-cell-flag{box-shadow:none}html[data-skin=classroom] .math-spotlight{box-shadow:0 0 0 1px color-mix(in srgb,var(--glow-purple) 20%,transparent)}html[data-skin=classroom] .lesson-play-btn,html[data-skin=classroom] .lesson-play-btn:hover{box-shadow:0 0 0 1px color-mix(in srgb,var(--subject-tint) 45%,transparent)}html[data-skin=classroom] .lesson-q-card[data-state=current]{box-shadow:0 0 0 1px color-mix(in srgb,var(--subject-tint) 12%,transparent),var(--shadow-1)}html[data-skin=classroom] .btn-glow,html[data-skin=classroom] .mindmap-root .mm-header-icon,html[data-skin=classroom] .pr-tile[aria-selected=true],html[data-skin=classroom] .tool-tile:hover{box-shadow:var(--shadow-1)}html[data-skin=classroom] .btn-glow:hover{box-shadow:var(--shadow-2)}html[data-skin=classroom] .ldb-mark.accent,html[data-skin=classroom] .pr-res-dial-fill{filter:none}html[data-skin=classroom]{--glow-on:0;--mm-glow-filter:none}html[data-skin=sketchbook]{--sorora-primary:#3f6e8c;--sorora-primary-container:#5a87a5;--sorora-on-primary:#fff;--sorora-secondary:#4d5662;--sorora-tertiary:#b0563f;--sorora-tertiary-container:#c46a52;--sorora-action-orange:#b0563f;--background:#f5f1e8;--surface:#fbf9f4;--surface-2:#f8f5ee;--surface-solid:#fbf9f4;--surface-container:#e9eef1;--surface-container-low:#fbf9f4;--surface-container-high:#dfe9ef;--border:#2a3440;--border-subtle:#b9bec4;--text:#2a3440;--text-muted:#4d5662;--text-dim:#5f6873;--brand:#3f6e8c;--brand-dark:#2a3440;--accent:#b0563f;--accent-dark:#8f4331;--warm:#f1dccf;--user-bubble:#3f6e8c;--ai-bubble:#fbf9f4;--parent-accent:#3f6e8c;--ok:#3e6a49;--warn:#855a1c;--bad:#8c3d33;--bad-solid:#8c3d33;--sidebar-active-fg:#2a3440;--headline-grad:linear-gradient(120deg,#2a3440,#2a3440);--card-glass:#fbf9f4;--modal-backdrop:rgba(42,52,64,.35);--threejs-bg:radial-gradient(ellipse at 50% 40%,#fbf9f4 0%,#f5f1e8 100%);--shadow-1:3px 4px 0 #2a3440;--shadow-2:6px 8px 0 #2a3440;--rim:inset 0 0 0 0 transparent;--mm-scrim:rgba(42,52,64,.2);--mm-surface-bg:#fbf9f4;--mm-surface-border:#2a3440;--mm-panel-bg:#fbf9f4;--mm-panel-soft:#e9eef1;--mm-panel-soft-hi:#dfe9ef;--mm-divider:#b9bec4;--mm-orb-bg:#fbf9f4;--mm-orb-stroke:#2a3440;--mm-arc-track:#b9bec4;--mm-center-dot:#3f6e8c;--mm-center-glow:rgba(63,110,140,.18);--mm-neural-bg:#e9eef1;--mm-header-title-grad:linear-gradient(135deg,#2a3440,#2a3440);--mm-mastery-meta:#3e6a49;--mm-error-text:#8c3d33;--sh-subj-pill:2px 3px 0 #2a3440;--sh-tab-chip:2px 3px 0 #2a3440;--sh-focus-banner:var(--shadow-1);--sh-mm-drawer:var(--shadow-2);--sh-hero-panel:var(--shadow-2);--fill-subj-card:#fbf9f4;--glass-opaque-fill:#fbf9f4;--skin-dot:#d6cfbf;--skin-ink:#2a3440;--skin-shadow-ink:#2a3440;--skin-highlight:#cfe0ea;--skin-eyebrow:#3f6e8c;--skin-wavy:#9dbccf;--skin-wash-mist:#dfe9ef;--skin-wash-sage:#e0e8d6;--skin-wash-clay:#f1dccf;--skin-wash-butter:#f6ead3;--skin-hatch:repeating-linear-gradient(45deg,#3f6e8c 0 2px,#cfe0ea 2px 7px);--skin-hatch-dense:repeating-linear-gradient(45deg,#2a3440 0 2px,#9dbccf 2px 6px);--skin-divider:#b9bec4;--skin-missed:#b85a4e;--skin-future:#8a929b;--skin-line:1.5px;--skin-wobble-a:18px 24px 16px 22px/22px 16px 24px 18px;--skin-wobble-b:22px 16px 24px 18px/18px 24px 16px 22px;--skin-wobble-c:16px 22px 18px 20px/20px 18px 22px 16px;--skin-wobble-btn:14px 18px 12px 16px/16px 12px 18px 14px;--skin-wobble-sm:10px 13px 9px 12px;color-scheme:light}html.dark[data-skin=sketchbook]{--sorora-primary:#86bde6;--sorora-primary-container:#5f9cc9;--sorora-on-primary:#0f1a24;--sorora-secondary:#b3ada3;--sorora-tertiary:#f2906f;--sorora-tertiary-container:#d4735a;--sorora-action-orange:#f2906f;--background:#14171c;--surface:#1d2128;--surface-2:#1a1e24;--surface-solid:#1d2128;--surface-container:#232831;--surface-container-low:#191c22;--surface-container-high:#1c2b38;--border:#3b4350;--border-subtle:#2c323b;--text:#ede7dc;--text-muted:#b3ada3;--text-dim:#8a857d;--brand:#86bde6;--brand-dark:#ede7dc;--accent:#f2906f;--accent-dark:#d4735a;--warm:#33231d;--user-bubble:#86bde6;--ai-bubble:#1d2128;--parent-accent:#86bde6;--ok:#9fd3a8;--warn:#ecc785;--bad:#f2a08f;--bad-solid:#c4604f;--sidebar-active-fg:#ede7dc;--headline-grad:linear-gradient(120deg,#ede7dc,#ede7dc);--card-glass:#1d2128;--modal-backdrop:rgba(5,6,8,.65);--threejs-bg:radial-gradient(ellipse at 50% 40%,#1d2128 0%,#14171c 100%);--shadow-1:3px 4px 0 #08090c;--shadow-2:6px 8px 0 #08090c;--mm-scrim:rgba(5,6,8,.65);--mm-surface-bg:#1d2128;--mm-surface-border:#3b4350;--mm-text:#ede7dc;--mm-text-muted:#b3ada3;--mm-text-faint:#8a857d;--mm-panel-bg:#191c22;--mm-panel-soft:#232831;--mm-panel-soft-hi:#1c2b38;--mm-divider:#2c323b;--mm-orb-bg:#1d2128;--mm-orb-stroke:#3b4350;--mm-arc-track:#2c323b;--mm-center-dot:#86bde6;--mm-center-glow:rgba(134,189,230,.22);--mm-neural-bg:#232831;--mm-header-title-grad:linear-gradient(135deg,#ede7dc,#ede7dc);--mm-mastery-meta:#9fd3a8;--mm-error-text:#f2a08f;--sh-subj-pill:2px 3px 0 #08090c;--sh-tab-chip:2px 3px 0 #08090c;--sh-focus-banner:var(--shadow-1);--sh-mm-drawer:var(--shadow-2);--sh-hero-panel:var(--shadow-2);--fill-subj-card:#1d2128;--glass-opaque-fill:#1d2128;--skin-dot:#262b33;--skin-ink:#3b4350;--skin-ink-strong:#5a6474;--skin-shadow-ink:#08090c;--skin-highlight:rgba(134,189,230,.28);--skin-eyebrow:#86bde6;--skin-wavy:#5d8fb5;--skin-wash-mist:#1c2b38;--skin-wash-sage:#1f2b22;--skin-wash-clay:#33231d;--skin-wash-butter:#312a1a;--skin-hatch:repeating-linear-gradient(45deg,#86bde6 0 2px,#1c2b38 2px 7px);--skin-hatch-dense:repeating-linear-gradient(45deg,#86bde6 0 2px,#14171c 2px 6px);--skin-divider:#2c323b;--skin-missed:#f2a08f;--skin-future:#5a6474;--skin-btn-primary-edge:#3d7aa8;--skin-btn-action-edge:#b65a40;color-scheme:dark}html.dark[data-skin=sketchbook] :is(.btn-primary,.join-now-btn){border-color:var(--skin-btn-primary-edge)}html.dark[data-skin=sketchbook] :is(.btn-action,.orange-action-btn){border-color:var(--skin-btn-action-edge)}html.dark[data-skin=sketchbook] :is(.liquid-glass,.card,.input-field):hover{border-color:var(--skin-ink-strong)}html.dark[data-skin=sketchbook] .input-field:focus{border-color:var(--brand)}html[data-skin=sketchbook] .intelligent-bg,html[data-skin=sketchbook] .mesh-bg,html[data-skin=sketchbook] body{background-color:var(--background);background-image:radial-gradient(var(--skin-dot) 1px,transparent 1.3px);background-size:18px 18px;background-attachment:fixed}html[data-skin=sketchbook] .intelligent-bg:before,html[data-skin=sketchbook] .mesh-bg:before{background:none}html[data-skin=sketchbook] .ibg-blobs,html[data-skin=sketchbook] .orb-glow,html[data-skin=sketchbook] .organic-blob,html[data-skin=sketchbook] .sorora-orb{display:none!important}html[data-skin=sketchbook] .card,html[data-skin=sketchbook] .glass-lavender,html[data-skin=sketchbook] .glass-warm,html[data-skin=sketchbook] .liquid-glass{background:var(--surface);border:var(--skin-line) solid var(--skin-ink);border-radius:var(--skin-wobble-a);box-shadow:var(--shadow-1);backdrop-filter:none;-webkit-backdrop-filter:none}html[data-skin=sketchbook] .liquid-glass:before{backdrop-filter:none;-webkit-backdrop-filter:none}html[data-skin=sketchbook] :is(.liquid-glass,.card):nth-child(3n+2){border-radius:var(--skin-wobble-b)}html[data-skin=sketchbook] :is(.liquid-glass,.card):nth-child(3n){border-radius:var(--skin-wobble-c)}html[data-skin=sketchbook] .liquid-glass.skin-flat,html[data-skin=sketchbook] aside.liquid-glass,html[data-skin=sketchbook] header.liquid-glass,html[data-skin=sketchbook] nav.liquid-glass{border-radius:0;box-shadow:none}html[data-skin=sketchbook] header.liquid-glass{border-width:0 0 var(--skin-line) 0}html[data-skin=sketchbook] .glass-lavender{background:var(--skin-wash-mist)}html[data-skin=sketchbook] .glass-warm{background:var(--skin-wash-clay)}html[data-skin=sketchbook] .viz-glow{box-shadow:var(--shadow-1)}html[data-skin=sketchbook] .ghost-border{border:var(--skin-line) dashed var(--skin-divider)}html[data-skin=sketchbook] :is(.btn-primary,.btn-action,.btn-ghost,.join-now-btn,.orange-action-btn){border:var(--skin-line) solid var(--skin-ink);border-radius:var(--skin-wobble-btn);box-shadow:2px 3px 0 var(--skin-shadow-ink);transition:transform .12s ease,box-shadow .12s ease}html[data-skin=sketchbook] .btn-primary,html[data-skin=sketchbook] .join-now-btn{background:var(--brand);color:var(--sorora-on-primary)}html[data-skin=sketchbook] .btn-action,html[data-skin=sketchbook] .orange-action-btn{background:var(--accent);color:var(--pal-on-tertiary)}html.dark[data-skin=sketchbook] .btn-action,html.dark[data-skin=sketchbook] .orange-action-btn{color:var(--sorora-on-primary)}html[data-skin=sketchbook] .btn-ghost{background:transparent;color:var(--text-muted);border-style:dashed;border-color:var(--skin-future);box-shadow:none}html[data-skin=sketchbook] :is(.btn-primary,.btn-action,.join-now-btn,.orange-action-btn):hover:not(:disabled,[aria-disabled=true]){transform:translate(-1px,-1px);box-shadow:3px 4px 0 var(--skin-shadow-ink)}html[data-skin=sketchbook] :is(.btn-primary,.btn-action,.join-now-btn,.orange-action-btn):active:not(:disabled,[aria-disabled=true]){transform:translate(1px,1px);box-shadow:0 0 0 var(--skin-shadow-ink)}html[data-skin=sketchbook] .input-field{background:var(--surface);border:var(--skin-line) solid var(--skin-ink);border-radius:var(--skin-wobble-btn)}html[data-skin=sketchbook] .input-field:focus{box-shadow:2px 2px 0 var(--brand)}html[data-skin=sketchbook] :focus-visible{outline:2px dashed var(--brand);outline-offset:3px}html[data-skin=sketchbook] .gradient-primary{background:var(--brand)}html[data-skin=sketchbook] .grad-brand,html[data-skin=sketchbook] .grad-text,html[data-skin=sketchbook] .gradient-heading,html[data-skin=sketchbook] .gradient-primary-text{-webkit-text-fill-color:currentColor;color:var(--text);background:linear-gradient(transparent 58%,var(--skin-highlight) 58%,var(--skin-highlight) 92%,transparent 92%);-webkit-background-clip:border-box;background-clip:border-box;padding:0 4px}html[data-skin=sketchbook] .glow-text{text-shadow:none}html[data-skin=sketchbook] .topic-progress-bar{background:var(--skin-hatch);border-right:var(--skin-line) solid var(--skin-ink)}html[data-skin=sketchbook] .lesson-content .tts-block-active{background:var(--skin-highlight);border-left:var(--skin-line) solid var(--skin-ink)}html[data-skin=sketchbook] ::-webkit-scrollbar-thumb{background:var(--skin-future)}html[data-skin=sketchbook] .skin-eyebrow{display:inline-block;font-family:var(--font-mono),monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--skin-eyebrow);-webkit-text-decoration:underline wavy var(--skin-wavy);text-decoration:underline wavy var(--skin-wavy);text-underline-offset:6px}html[data-skin=sketchbook] .skin-em{font-style:italic;padding:0 4px;background:linear-gradient(transparent 58%,var(--skin-highlight) 58%,var(--skin-highlight) 92%,transparent 92%)}html[data-skin=sketchbook] .skin-wash-mist{background:var(--skin-wash-mist)}html[data-skin=sketchbook] .skin-wash-sage{background:var(--skin-wash-sage)}html[data-skin=sketchbook] .skin-wash-clay{background:var(--skin-wash-clay)}html[data-skin=sketchbook] .skin-wash-butter{background:var(--skin-wash-butter)}html[data-skin=sketchbook] .skin-hatch{background:var(--skin-hatch);border:var(--skin-line) solid var(--skin-ink)}html[data-skin=sketchbook] .skin-divider{border-top:var(--skin-line) dashed var(--skin-divider)}html[data-skin=sketchbook] .skin-missed{border:var(--skin-line) dashed var(--skin-missed);background:transparent}html[data-skin=sketchbook] .skin-future{border:var(--skin-line) dashed var(--skin-future);background:transparent}@media (max-width:767.98px){html[data-skin=sketchbook]{--shadow-1:2px 3px 0 var(--skin-shadow-ink)}html[data-skin=sketchbook] body{background-size:16px 16px}}@media (prefers-reduced-motion:reduce){html[data-skin=sketchbook] 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75%,var(--skin-cat-paper));--palette-emerald-500:var(--skin-cat-base-2);--palette-emerald-600:color-mix(in srgb,var(--skin-cat-base-2) 85%,var(--skin-cat-ink));--palette-emerald-700:color-mix(in srgb,var(--skin-cat-base-2) 70%,var(--skin-cat-ink));--palette-emerald-800:color-mix(in srgb,var(--skin-cat-base-2) 55%,var(--skin-cat-ink));--palette-emerald-900:color-mix(in srgb,var(--skin-cat-base-2) 42%,var(--skin-cat-ink));--palette-emerald-950:color-mix(in srgb,var(--skin-cat-base-2) 30%,var(--skin-cat-ink));--palette-teal-50:color-mix(in srgb,var(--skin-cat-base-6) 8%,var(--skin-cat-paper));--palette-teal-100:color-mix(in srgb,var(--skin-cat-base-6) 16%,var(--skin-cat-paper));--palette-teal-200:color-mix(in srgb,var(--skin-cat-base-6) 30%,var(--skin-cat-paper));--palette-teal-300:color-mix(in srgb,var(--skin-cat-base-6) 50%,var(--skin-cat-paper));--palette-teal-400:color-mix(in srgb,var(--skin-cat-base-6) 75%,var(--skin-cat-paper));--palette-teal-500:var(--skin-cat-base-6);--palette-teal-600:color-mix(in srgb,var(--skin-cat-base-6) 85%,var(--skin-cat-ink));--palette-teal-700:color-mix(in srgb,var(--skin-cat-base-6) 70%,var(--skin-cat-ink));--palette-teal-800:color-mix(in srgb,var(--skin-cat-base-6) 55%,var(--skin-cat-ink));--palette-teal-900:color-mix(in srgb,var(--skin-cat-base-6) 42%,var(--skin-cat-ink));--palette-teal-950:color-mix(in srgb,var(--skin-cat-base-6) 30%,var(--skin-cat-ink));--palette-cyan-50:color-mix(in srgb,var(--skin-cat-base-6) 8%,var(--skin-cat-paper));--palette-cyan-100:color-mix(in srgb,var(--skin-cat-base-6) 16%,var(--skin-cat-paper));--palette-cyan-200:color-mix(in srgb,var(--skin-cat-base-6) 30%,var(--skin-cat-paper));--palette-cyan-300:color-mix(in srgb,var(--skin-cat-base-6) 50%,var(--skin-cat-paper));--palette-cyan-400:color-mix(in srgb,var(--skin-cat-base-6) 75%,var(--skin-cat-paper));--palette-cyan-500:var(--skin-cat-base-6);--palette-cyan-600:color-mix(in srgb,var(--skin-cat-base-6) 85%,var(--skin-cat-ink));--palette-cyan-700:color-mix(in srgb,var(--skin-cat-base-6) 70%,var(--skin-cat-ink));--palette-cyan-800:color-mix(in srgb,var(--skin-cat-base-6) 55%,var(--skin-cat-ink));--palette-cyan-900:color-mix(in srgb,var(--skin-cat-base-6) 42%,var(--skin-cat-ink));--palette-cyan-950:color-mix(in srgb,var(--skin-cat-base-6) 30%,var(--skin-cat-ink));--palette-sky-50:color-mix(in srgb,var(--skin-cat-base-1) 8%,var(--skin-cat-paper));--palette-sky-100:color-mix(in srgb,var(--skin-cat-base-1) 16%,var(--skin-cat-paper));--palette-sky-200:color-mix(in srgb,var(--skin-cat-base-1) 30%,var(--skin-cat-paper));--palette-sky-300:color-mix(in srgb,var(--skin-cat-base-1) 50%,var(--skin-cat-paper));--palette-sky-400:color-mix(in srgb,var(--skin-cat-base-1) 75%,var(--skin-cat-paper));--palette-sky-500:var(--skin-cat-base-1);--palette-sky-600:color-mix(in srgb,var(--skin-cat-base-1) 85%,var(--skin-cat-ink));--palette-sky-700:color-mix(in srgb,var(--skin-cat-base-1) 70%,var(--skin-cat-ink));--palette-sky-800:color-mix(in srgb,var(--skin-cat-base-1) 55%,var(--skin-cat-ink));--palette-sky-900:color-mix(in srgb,var(--skin-cat-base-1) 42%,var(--skin-cat-ink));--palette-sky-950:color-mix(in srgb,var(--skin-cat-base-1) 30%,var(--skin-cat-ink));--palette-blue-50:color-mix(in srgb,var(--skin-cat-base-1) 8%,var(--skin-cat-paper));--palette-blue-100:color-mix(in srgb,var(--skin-cat-base-1) 16%,var(--skin-cat-paper));--palette-blue-200:color-mix(in srgb,var(--skin-cat-base-1) 30%,var(--skin-cat-paper));--palette-blue-300:color-mix(in srgb,var(--skin-cat-base-1) 50%,var(--skin-cat-paper));--palette-blue-400:color-mix(in srgb,var(--skin-cat-base-1) 75%,var(--skin-cat-paper));--palette-blue-500:var(--skin-cat-base-1);--palette-blue-600:color-mix(in srgb,var(--skin-cat-base-1) 85%,var(--skin-cat-ink));--palette-blue-700:color-mix(in srgb,var(--skin-cat-base-1) 70%,var(--skin-cat-ink));--palette-blue-800:color-mix(in srgb,var(--skin-cat-base-1) 55%,var(--skin-cat-ink));--palette-blue-900:color-mix(in srgb,var(--skin-cat-base-1) 42%,var(--skin-cat-ink));--palette-blue-950:color-mix(in srgb,var(--skin-cat-base-1) 30%,var(--skin-cat-ink));--skin-cat-base-1:#3f6e8c;--skin-cat-base-2:#5f8f6a;--skin-cat-base-3:#b0563f;--skin-cat-base-4:#c58b3a;--skin-cat-base-5:#b86a85;--skin-cat-base-6:#3f8a8a;--skin-cat-base-7:#8a4f6e;--skin-cat-base-8:#5f6873}html.dark[data-skin=sketchbook]{--cat-1:#86bde6;--cat-2:#9fd3a8;--cat-3:#f2906f;--cat-4:#ecc785;--cat-5:#eda3b9;--cat-6:#86cfc6;--cat-7:#d79bc3;--cat-8:#b3ada3}html[data-skin=sketchbook]{--cat-blue:var(--cat-1);--cat-blue-soft:var(--cat-1-soft);--cat-blue-deep:var(--cat-1-deep);--cat-green:var(--cat-2);--cat-green-soft:var(--cat-2-soft);--cat-green-deep:var(--cat-2-deep);--cat-red:var(--cat-3);--cat-red-soft:var(--cat-3-soft);--cat-red-deep:var(--cat-3-deep);--cat-yellow:var(--cat-4);--cat-yellow-soft:var(--cat-4-soft);--cat-yellow-deep:var(--cat-4-deep);--cat-rose:var(--cat-5);--cat-rose-soft:var(--cat-5-soft);--cat-rose-deep:var(--cat-5-deep);--cat-teal:var(--cat-6);--cat-teal-soft:var(--cat-6-soft);--cat-teal-deep:var(--cat-6-deep);--cat-purple:var(--cat-7);--cat-purple-soft:var(--cat-7-soft);--cat-purple-deep:var(--cat-7-deep);--cat-neutral:var(--cat-8);--cat-neutral-soft:var(--cat-8-soft);--cat-neutral-deep:var(--cat-8-deep);--confetti-1:var(--cat-yellow);--confetti-2:var(--cat-blue);--confetti-3:var(--cat-green);--confetti-4:var(--cat-purple);--confetti-5:var(--cat-rose);--confetti-6:var(--cat-teal);--confetti-7:var(--cat-red);--confetti-8:var(--cat-rose-deep);--confetti-9:var(--cat-yellow-deep);--confetti-10:var(--cat-red-deep);--note-kind-definition:var(--cat-purple-deep);--note-kind-formula:var(--cat-green-deep);--note-kind-example:var(--cat-blue-deep);--note-kind-misconception:var(--cat-red-deep);--note-kind-key-fact:var(--cat-yellow-deep);--note-kind-procedure:var(--cat-teal-deep);--note-kind-raw:var(--cat-neutral-deep);--pal-error:var(--bad-solid);--pal-on-error:var(--pal-on-primary);--pal-error-container:color-mix(in srgb,var(--bad-solid) 16%,var(--pal-surface));--pal-on-error-container:color-mix(in srgb,var(--bad-solid) 75%,var(--pal-on-surface));--ink-bright:var(--palette-white);--orb-highlight:var(--palette-white);--caption-box:var(--pal-inverse-surface);--board-chalk:var(--pal-surface-bright);--glow-purple:var(--cat-purple);--glow-teal:var(--cat-teal);--glow-indigo:var(--cat-blue);--glow-cyan:var(--cat-teal);--dash-field-glow:var(--background);--dash-aurora-1:transparent;--dash-aurora-2:transparent;--dash-aurora-3:transparent;--dash-aurora-4:transparent;--dash-live:var(--cat-teal);--dash-live-deep:var(--cat-teal-deep);--grad-text-deep:var(--text);--orb-core-light:var(--pal-primary);--orb-core-dark:var(--pal-on-primary-fixed);--chip-pink:var(--cat-rose);--chip-pink-strong:var(--cat-rose);--chip-pink-ink:var(--cat-rose-deep);--chip-pink-ink-soft:var(--cat-rose-deep);--lg-bg:var(--card-glass);--lg-sheen:transparent;--lg-track:color-mix(in srgb,var(--brand) 10%,transparent);--lg-surface:color-mix(in srgb,var(--brand) 6%,transparent);--lg-surface-hi:color-mix(in srgb,var(--brand) 10%,transparent);--lg-border:var(--border);--lg-border-hi:color-mix(in srgb,var(--brand) 24%,transparent);--lg-text-dim:color-mix(in srgb,var(--text-muted) 70%,var(--text-dim));--panel-fill:color-mix(in srgb,var(--palette-white) 62%,transparent);--panel-fill-2:color-mix(in srgb,var(--palette-white) 78%,transparent);--panel-fill-3:color-mix(in srgb,var(--palette-white) 94%,transparent)}html.dark[data-skin=sketchbook]{--panel-fill:color-mix(in srgb,var(--glass-tint) 3.5%,transparent);--panel-fill-2:color-mix(in srgb,var(--glass-tint) 6%,transparent);--panel-fill-3:color-mix(in srgb,var(--glass-tint) 10%,transparent)}html[data-skin=sketchbook] .aura-orb:before,html[data-skin=sketchbook] .lesson-blob-bg,html[data-skin=sketchbook] .lg-flame-halo,html[data-skin=sketchbook] .sheen-host .sheen-sweep{display:none}html[data-skin=sketchbook] .pr-run-aura{background:none}html[data-skin=sketchbook] .lesson-dock-seg-fill,html[data-skin=sketchbook] .lesson-dock-seg.is-active,html[data-skin=sketchbook] .lesson-light-ray,html[data-skin=sketchbook] .lesson-panel-send,html[data-skin=sketchbook] .lesson-rail-dot[data-state=active],html[data-skin=sketchbook] .lesson-rail-progress-fill,html[data-skin=sketchbook] .lesson-rail-pulse,html[data-skin=sketchbook] .lesson-rail-tick[data-state=active],html[data-skin=sketchbook] .lesson-threejs-card:before,html[data-skin=sketchbook] .lesson-video-glow:before,html[data-skin=sketchbook] .lg-live-dot,html[data-skin=sketchbook] .lg-seg.on,html[data-skin=sketchbook] .pr-run-cell-flag{box-shadow:none}html[data-skin=sketchbook] .math-spotlight{box-shadow:0 0 0 1px color-mix(in srgb,var(--glow-purple) 20%,transparent)}html[data-skin=sketchbook] .lesson-play-btn,html[data-skin=sketchbook] .lesson-play-btn:hover{box-shadow:0 0 0 1px color-mix(in srgb,var(--subject-tint) 45%,transparent)}html[data-skin=sketchbook] .lesson-q-card[data-state=current]{box-shadow:0 0 0 1px color-mix(in srgb,var(--subject-tint) 12%,transparent),var(--shadow-1)}html[data-skin=sketchbook] .btn-glow,html[data-skin=sketchbook] .mindmap-root .mm-header-icon,html[data-skin=sketchbook] .pr-tile[aria-selected=true],html[data-skin=sketchbook] .tool-tile:hover{box-shadow:var(--shadow-1)}html[data-skin=sketchbook] .btn-glow:hover{box-shadow:var(--shadow-2)}html[data-skin=sketchbook] .ldb-mark.accent,html[data-skin=sketchbook] .pr-res-dial-fill{filter:none}html[data-skin=sketchbook]{--glow-on:0;--mm-glow-filter:none}