.education-desk-layout{--bg: #ffffff;--bg-elevated: #ffffff;--bg-subtle: #f4f6f9;--text: #2a303c;--text-secondary: #5c6474;--muted: #8b8b8b;--border: color-mix(in srgb, #2a303c 10%, transparent);--border-strong: color-mix(in srgb, #2a303c 18%, transparent);--admission-ink: #2a2a2a;--admission-forest: #e85a43;--admission-forest-deep: #c44a36;--admission-forest-hover: #d14e3a;--admission-accent-soft: color-mix(in srgb, #e85a43 14%, transparent);--admission-accent-muted-bg: color-mix(in srgb, #e85a43 7%, transparent);--admission-accent-on: #ffffff;--accent: var(--admission-forest);--accent-hover: var(--admission-forest-hover);--accent-soft: var(--admission-accent-soft);--accent-muted-bg: var(--admission-accent-muted-bg);--accent-on: var(--admission-accent-on);--focus-ring: color-mix(in srgb, #e85a43 45%, transparent);--shadow-card: 0 8px 22px rgba(28, 32, 44, .07);--shadow-float: 0 16px 36px rgba(28, 32, 44, .12);--surface-muted: color-mix(in srgb, #fff 78%, transparent);--radius-lg: .85rem;--radius-xl: 1.1rem;--radius-2xl: 1.35rem;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;background:var(--bg);color:var(--text);font-family:var(--font-sans)}.education-desk-header{position:sticky;top:0;z-index:40;background:color-mix(in srgb,#fff 82%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}.education-desk-header__inner{max-width:min(68rem,100%);margin:0 auto;padding:.85rem clamp(1rem,3vw,1.5rem);display:flex;align-items:center;gap:.85rem 1.25rem;flex-wrap:wrap}.education-desk-brand{display:inline-flex;align-items:center;gap:.55rem;text-decoration:none;color:inherit;flex-shrink:0}.education-desk-brand:hover{color:var(--admission-forest)}.education-desk-brand__mark,.education-desk-brand__hex{flex-shrink:0;color:var(--admission-forest)}.briefing-hex-logo{display:block;flex-shrink:0}.education-desk-brand__wordmark,.education-desk-brand__copy{display:inline-flex;align-items:baseline;flex-wrap:wrap;gap:.35rem .45rem;line-height:1.1}.education-desk-brand__name{font:700 .95rem/1 var(--font-display, system-ui);letter-spacing:-.02em;color:var(--admission-ink)}.education-desk-brand__desk{font:600 .78rem/1 var(--font-sans, system-ui);letter-spacing:.01em;text-transform:none;color:var(--muted)}.education-desk-brand:hover .education-desk-brand__name,.education-desk-brand:hover .education-desk-brand__desk{color:var(--admission-forest)}.education-desk-nav{display:none;align-items:center;gap:1.05rem;flex-wrap:wrap}@media(min-width:768px){.education-desk-nav{display:flex}}.education-desk-nav__link{font:600 .86rem/1 var(--font-sans);color:var(--text-secondary);text-decoration:none}.education-desk-nav__link:hover,.education-desk-nav__link--active{color:var(--admission-ink)}.education-desk-nav__link:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px;border-radius:4px}.education-desk-header__actions{margin-left:auto;display:inline-flex;align-items:center;gap:.55rem;flex-shrink:0}.education-desk-lang-switcher{position:relative;z-index:5}.education-desk-layout .education-desk-lang-switcher.lang-switcher--compact .lang-switcher__trigger{min-height:2.1rem;padding:.45rem .75rem;border-radius:999px;border:1px solid var(--border);background:color-mix(in srgb,#fff 78%,transparent);color:var(--admission-ink);box-shadow:0 8px 22px color-mix(in srgb,#000 5%,transparent);backdrop-filter:blur(14px);font:700 .72rem/1 var(--font-sans, system-ui);letter-spacing:.04em;text-transform:uppercase}.education-desk-header__product{display:inline-flex;align-items:center;padding:.5rem .95rem;border-radius:9999px;background:var(--admission-ink);color:#fff;font:700 .72rem/1 var(--font-sans, system-ui);letter-spacing:.04em;text-transform:uppercase;text-decoration:none;box-shadow:0 8px 18px color-mix(in srgb,#000 10%,transparent);white-space:nowrap}.education-desk-header__product:hover{background:#161a22;filter:brightness(1.05)}.education-desk-header__product:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}.education-desk-main{flex:1;width:100%}.education-desk-main.about-post-page-main{padding-top:.35rem}.education-desk-content{max-width:min(68rem,100%);margin:0 auto;padding:clamp(.85rem,2.5vw,1.35rem) clamp(1rem,3vw,1.5rem) 2.5rem}.education-desk-layout .landing-reveal-block{opacity:1;transform:none;animation:none}.education-desk-pagehead{margin:0 0 1.35rem;padding:1rem 1.1rem 1.15rem;border:1px solid color-mix(in srgb,#c9ced8 40%,transparent);border-radius:.85rem;background:color-mix(in srgb,#f4f6f9 55%,#fff);box-shadow:var(--shadow-card)}.briefings-adsense{margin:0 0 1.35rem;min-height:90px;overflow:hidden;border-radius:var(--radius-lg);border:1px dashed var(--border-strong);background:color-mix(in srgb,var(--bg-subtle) 72%,var(--bg-elevated))}.briefings-adsense--article{margin:1.25rem 0 1.5rem;clear:both}.briefings-adsense--article .adsbygoogle{min-height:120px}.briefings-adsense .adsbygoogle{min-height:90px}.education-desk-pagehead__kicker{margin:0 0 .45rem;font:700 .68rem/1 var(--font-sans, system-ui);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.education-desk-pagehead__title{margin:0 0 .45rem;max-width:22ch;font:800 clamp(1.55rem,3.5vw,2.1rem) / 1.12 var(--font-display);letter-spacing:-.03em;color:var(--admission-ink)}.education-desk-pagehead__sub{margin:0;max-width:62ch;font-size:clamp(.92rem,2vw,1rem);line-height:1.55;color:var(--text-secondary)}.education-desk-content .about-editorial{margin-top:clamp(1.5rem,3vw,2.25rem);padding-top:clamp(1.25rem,2.5vw,1.75rem);border-top:1px solid var(--border)}.education-desk-content .about-editorial__inner{max-width:none;padding:0}.education-desk-content--article{max-width:42rem}.education-desk-content--article-bilingual{max-width:min(72rem,96vw)}.education-desk-hero{display:grid;justify-items:start;text-align:left;gap:.55rem;margin:0 0 1.65rem;padding:clamp(1.35rem,3.5vw,1.85rem) clamp(1.1rem,3vw,1.5rem);border-radius:var(--radius-xl);background:#fff;color:var(--text);border:1px solid color-mix(in srgb,#c9ced8 42%,transparent);box-shadow:var(--shadow-card)}.education-desk-hero__hex{margin-bottom:.15rem;color:var(--admission-forest)}.education-desk-hero__kicker{margin:0;padding:.28rem .65rem;border-radius:9999px;background:color-mix(in srgb,#e8ebf0 70%,#fff);border:1px solid color-mix(in srgb,#c9ced8 40%,transparent);font:700 .66rem/1 var(--font-sans, system-ui);letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary)}.education-desk-hero__title{margin:0;max-width:18ch;font:800 clamp(1.65rem,4vw,2.35rem) / 1.12 var(--font-display);letter-spacing:-.03em;color:var(--admission-ink)}.education-desk-hero__sub{margin:0;max-width:52ch;font-size:clamp(.92rem,2vw,1.02rem);line-height:1.55;color:var(--text-secondary)}.education-desk-empty{margin:0 0 1.25rem;padding:1.35rem 1.45rem;border-radius:var(--radius-xl);border:1px dashed color-mix(in srgb,#c9ced8 55%,transparent);background:color-mix(in srgb,#f4f6f9 70%,#fff);color:var(--text-secondary);text-align:center}.education-desk-archive-section__title{margin:0 0 .95rem;font:700 1.4rem / 1.2 var(--font-display, inherit);letter-spacing:-.02em;color:var(--text)}.education-desk-archive-fold{margin:0 0 1.35rem;border:1px solid color-mix(in srgb,#c9ced8 40%,transparent);border-radius:var(--radius-xl);background:color-mix(in srgb,#f8fafc 80%,#fff);overflow:hidden}.education-desk-archive-fold__summary{display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:.75rem;padding:.95rem 1.1rem;cursor:pointer;list-style:none;user-select:none}.education-desk-archive-fold__summary::-webkit-details-marker{display:none}.education-desk-archive-fold__label{font:700 1.15rem / 1.2 var(--font-display, inherit);letter-spacing:-.02em;color:var(--text)}.education-desk-archive-fold__count{display:inline-flex;align-items:center;justify-content:center;min-width:1.65rem;padding:.18rem .5rem;border-radius:9999px;background:color-mix(in srgb,#e8ebf0 70%,#fff);color:var(--text-secondary);font:700 .72rem / 1 var(--font-display, inherit);letter-spacing:.04em}.education-desk-archive-fold__summary:after{content:"";flex-shrink:0;width:.55rem;height:.55rem;margin-left:.35rem;border-right:2px solid var(--text-secondary);border-bottom:2px solid var(--text-secondary);transform:rotate(45deg);transition:transform .18s ease}.education-desk-archive-fold[open] .education-desk-archive-fold__summary:after{transform:rotate(-135deg);margin-top:.2rem}.education-desk-archive-fold__summary:focus-visible{outline:3px solid var(--focus-ring);outline-offset:-3px}.education-desk-archive-fold__body{padding:0 1rem 1.1rem}.education-desk-archive-fold__body .education-desk-archive{margin-bottom:0}.education-desk-archive{display:grid;grid-template-columns:minmax(0,1fr);gap:1.15rem;margin:0 0 1.5rem;padding:0;list-style:none}@media(min-width:640px){.education-desk-archive{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(min-width:1024px){.education-desk-archive{grid-template-columns:repeat(3,minmax(0,1fr))}}.education-desk-archive>li{display:flex;min-width:0}.education-desk-card{display:flex;flex-direction:column;width:100%;min-height:100%;overflow:hidden;border-radius:var(--radius-xl);background:var(--bg-elevated);border:1px solid color-mix(in srgb,#c9ced8 42%,transparent);box-shadow:var(--shadow-card);text-decoration:none;color:inherit;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.education-desk-card:hover{transform:translateY(-3px);border-color:color-mix(in srgb,#e85a43 28%,#c9ced8);box-shadow:var(--shadow-float)}.education-desk-card:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}.education-desk-card__art{width:100%;height:auto;aspect-ratio:16 / 9;object-fit:cover;border-bottom:1px solid var(--border)}.education-desk-card__media{position:relative;display:block;flex-shrink:0}.education-desk-card__badge{position:absolute;top:.55rem;left:.55rem;padding:.26rem .58rem;border-radius:9999px;background:color-mix(in srgb,#e85a43 92%,#000 8%);color:#fff;font-family:var(--font-display, inherit);font-size:.64rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;line-height:1.2;box-shadow:0 4px 14px color-mix(in srgb,#e85a43 24%,transparent)}.education-desk-card__badge--solo{position:static;align-self:flex-start;margin:.75rem .75rem 0}.education-desk-card__art--briefing{object-fit:contain;background:#f4f6f9}.education-desk-card__body{display:flex;flex:1;flex-direction:column;gap:.35rem;padding:.95rem 1rem 1.1rem;min-width:0}.education-desk-card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:.35rem .5rem}.education-desk-card__views{font-size:.74rem;font-weight:600;color:var(--muted)}.education-desk-card__date{font-size:.74rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--admission-forest)}.education-desk-card__title{font-family:var(--font-display, inherit);font-size:1.02rem;font-weight:700;line-height:1.35;color:var(--admission-ink);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;min-height:calc(1.35em * 3)}.education-desk-card__excerpt{flex:1;font-size:.9rem;line-height:1.5;color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.education-desk-layout .newsletter-subscribe{border-color:color-mix(in srgb,var(--admission-forest) 16%,var(--border));background:color-mix(in srgb,var(--bg-elevated) 90%,var(--admission-accent-muted-bg));box-shadow:var(--shadow-card)}@media(min-width:768px){.education-desk-layout .newsletter-subscribe--compact{grid-template-columns:minmax(0,1.1fr) minmax(18rem,23rem);align-items:start;column-gap:2rem;row-gap:.85rem;padding:1.35rem 1.55rem}.education-desk-layout .newsletter-subscribe--compact .newsletter-subscribe__action{align-self:center}}.education-desk-layout .newsletter-subscribe .landing-kicker{color:var(--admission-forest);background:var(--admission-accent-soft)}.education-desk-layout .newsletter-subscribe__title{color:var(--admission-ink)}.education-desk-layout .newsletter-subscribe__submit.primary{background:var(--admission-ink);color:#fff;box-shadow:0 8px 18px color-mix(in srgb,#000 10%,transparent)}.education-desk-layout .newsletter-subscribe__submit.primary:hover{background:#161a22}.education-desk-layout .primary{background:var(--admission-ink);color:#fff}.education-desk-layout .primary:hover{background:#161a22}.education-desk-layout .about-posts-breadcrumb{margin-bottom:1.25rem;font-size:.88rem}.education-desk-layout .about-posts-breadcrumb a{color:var(--admission-forest);font-weight:600;text-decoration:none}.education-desk-layout .about-posts-breadcrumb a:hover{color:var(--admission-forest-hover);text-decoration:underline}.education-desk-layout .about-post-series-badge.about-post-tag--briefing,.education-desk-layout .about-post-series-badge[class*=about-post-tag--]{color:#fff}.education-desk-layout .about-post-series-badge:not([class*=about-post-tag--]){color:var(--admission-forest);background:var(--admission-accent-soft)}.education-desk-layout .about-post-article__title{color:var(--admission-ink)}.education-desk-card__date--briefing{letter-spacing:.08em}.education-desk-layout .about-post-article__body a,.education-desk-layout .about-post-article__back{color:var(--admission-forest)}.about-post-bilingual-toolbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin:1.5rem 0 0;padding:.82rem .95rem .82rem 0;border:1px solid color-mix(in srgb,var(--admission-forest) 16%,var(--border));border-radius:var(--radius-lg);background:linear-gradient(118deg,color-mix(in srgb,var(--bg-elevated) 88%,var(--admission-accent-muted-bg)) 0%,var(--bg-elevated) 58%);box-shadow:var(--shadow-card);position:relative;overflow:hidden}.about-post-bilingual-toolbar:before{content:"";position:absolute;inset:0 auto 0 0;width:4px;background:linear-gradient(180deg,var(--admission-forest) 0%,color-mix(in srgb,var(--admission-forest) 72%,var(--admission-forest-hover)) 100%)}.about-post-bilingual-toolbar:not(.about-post-bilingual-toolbar--open){margin-bottom:.15rem}.about-post-bilingual-toolbar--open{margin-bottom:0;border-bottom-left-radius:0;border-bottom-right-radius:0;border-bottom-color:color-mix(in srgb,var(--admission-forest) 12%,var(--border));box-shadow:0 8px 22px -14px #0c2e2438}.about-post-bilingual-toolbar--open+#about-post-bilingual-content{margin-top:-1px;padding:0 1.05rem 1.2rem;border:1px solid color-mix(in srgb,var(--admission-forest) 16%,var(--border));border-top:1px solid color-mix(in srgb,var(--admission-forest) 10%,var(--border));border-radius:0 0 var(--radius-lg) var(--radius-lg);background:linear-gradient(180deg,color-mix(in srgb,var(--bg-elevated) 92%,var(--admission-accent-muted-bg)) 0%,var(--bg-elevated) 100%);box-shadow:var(--shadow-card)}.about-post-bilingual-toolbar__label{flex:1 1 auto;min-width:0;padding-left:1.05rem;font:700 .9rem / 1.25 var(--font-display, inherit);letter-spacing:-.015em;color:var(--admission-ink)}.about-post-bilingual-toolbar__toggle{display:inline-flex;align-items:center;gap:.5rem;flex-shrink:0;appearance:none;margin-right:.95rem;border:1px solid color-mix(in srgb,var(--admission-forest) 22%,var(--border));border-radius:9999px;background:color-mix(in srgb,var(--admission-forest) 7%,var(--bg-elevated));padding:.44rem .95rem;font:700 .8rem / 1.2 var(--font-display, inherit);color:var(--admission-forest);cursor:pointer;box-shadow:0 1px color-mix(in srgb,var(--admission-forest) 8%,transparent);transition:border-color .15s ease,background .15s ease,color .15s ease,box-shadow .15s ease,transform .15s ease}.about-post-bilingual-toolbar__toggle:hover{border-color:color-mix(in srgb,var(--admission-forest) 36%,var(--border));background:color-mix(in srgb,var(--admission-forest) 12%,var(--bg-elevated));box-shadow:0 4px 14px -8px #0c2e2447;transform:translateY(-1px)}.about-post-bilingual-toolbar__toggle:active{transform:translateY(0)}.about-post-bilingual-toolbar__toggle:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}.about-post-bilingual-toolbar--open .about-post-bilingual-toolbar__toggle{background:var(--admission-forest);border-color:var(--admission-forest-deep);color:var(--admission-accent-on);box-shadow:0 6px 18px -10px #0c2e2473}.about-post-bilingual-toolbar--open .about-post-bilingual-toolbar__toggle:hover{background:var(--admission-forest-hover);border-color:var(--admission-forest-deep);color:var(--admission-accent-on)}.about-post-bilingual-toolbar--open+#about-post-bilingual-content .about-post-translate{margin-top:1rem}.about-post-bilingual-toolbar--open+#about-post-bilingual-content .about-post-bilingual--header{margin-top:0}.about-post-translate{display:grid;gap:.65rem;margin:0 0 1.35rem}.about-post-translate__actions{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem .75rem}.education-desk-layout .about-post-translate__btn{appearance:none;border:1px solid color-mix(in srgb,var(--admission-forest) 18%,var(--border));border-radius:9999px;background:var(--bg-elevated);padding:.35rem .8rem;font:600 .78rem / 1.2 var(--font-display, inherit);color:var(--text-secondary);cursor:pointer;transition:border-color .15s ease,background .15s ease,color .15s ease}.education-desk-layout .about-post-translate__btn:hover{border-color:color-mix(in srgb,var(--admission-forest) 28%,var(--border));color:var(--admission-forest)}.education-desk-layout .about-post-translate__btn:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}.education-desk-layout .about-post-translate__btn--active{border-color:color-mix(in srgb,var(--admission-forest) 36%,var(--border));background:color-mix(in srgb,var(--admission-forest) 12%,var(--bg-elevated));color:var(--admission-forest)}.about-post-translate__notice{margin:0;padding:.7rem .85rem;border-radius:var(--radius);border:1px solid color-mix(in srgb,var(--admission-forest) 18%,var(--border));background:color-mix(in srgb,var(--admission-forest) 8%,var(--bg-elevated));font-size:.86rem;line-height:1.45;color:var(--text-secondary)}.about-post-translate__notice-label{font-weight:700;color:var(--admission-forest);text-transform:uppercase;letter-spacing:.06em;font-size:.72rem}.about-post-translate__error{margin:0;font-size:.8125rem;color:var(--brand-danger)}.about-post-bilingual{margin:0 0 1.35rem}.about-post-bilingual--header{margin:0 0 1.15rem}.about-post-bilingual--body{margin-top:0}.about-post-bilingual__cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(1rem,2.5vw,1.75rem);align-items:start;position:relative}.about-post-align{border-radius:4px;transition:background .15s ease,box-shadow .15s ease}.about-post-align--active{background:color-mix(in srgb,var(--admission-forest) 16%,transparent);box-shadow:0 0 0 2px color-mix(in srgb,var(--admission-forest) 24%,transparent)}.about-post-bilingual__col{min-width:0}.about-post-bilingual__col+.about-post-bilingual__col{padding-left:clamp(.85rem,2vw,1.25rem);border-left:1px solid color-mix(in srgb,var(--admission-forest) 14%,var(--border))}.about-post-bilingual__lang{margin:0 0 .75rem;font:700 .72rem / 1 var(--font-display, inherit);letter-spacing:.08em;text-transform:uppercase;color:var(--admission-forest)}.about-post-bilingual__loading{margin:0;font-size:.92rem;color:var(--text-secondary)}.about-post-article--bilingual .about-post-bilingual__col .about-post-article__title{font-size:clamp(1.35rem,3.2vw,1.85rem)}.about-post-article--bilingual .about-post-bilingual__col .about-post-article__deck{font-size:clamp(1rem,2.2vw,1.15rem)}@media(max-width:900px){.about-post-bilingual__cols{grid-template-columns:minmax(0,1fr)}.about-post-bilingual__col+.about-post-bilingual__col{padding-left:0;padding-top:1.15rem;border-left:none;border-top:1px solid color-mix(in srgb,var(--admission-forest) 14%,var(--border))}}.education-desk-panel{max-width:36rem;margin:0 auto;padding:clamp(1.5rem,4vw,2rem);border-radius:var(--radius-2xl);background:var(--bg-elevated);border:1px solid color-mix(in srgb,var(--admission-forest) 14%,var(--border));box-shadow:var(--shadow-card)}.education-desk-layout 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.study-lab-section-tabs__tab{min-height:2.75rem;padding-inline:.35rem;font-size:.68rem;letter-spacing:.06em}.study-lab-section-tabs__refs-menu{left:auto;right:0;transform:none}.study-lab-shell__brand .study-lab-wordmark__rule,.study-lab-shell__brand .study-lab-wordmark__by-link{display:none}}@media(max-width:640px){.study-lab-section-tabs--header .study-lab-section-tabs__practice-cta{flex:1 1 100%;order:3;margin-left:0;min-height:2.65rem;padding:.5rem 1rem;font-size:.78rem}.study-lab-section-tabs--header .study-lab-section-tabs__scroll{flex:1 1 0;gap:.7rem}.study-lab-section-tabs__refs{margin-left:auto}}@media(max-width:720px){.study-lab-wordmark{font-size:.95rem;gap:.45rem}.study-lab-wordmark__icon{width:1.4rem;height:1.4rem}.study-lab-wordmark__product-link{gap:.45rem}}@media(max-width:420px){[data-app-variant=student] .student-chrome--study-lab .study-lab-wordmark__rule,[data-app-variant=student] .student-chrome--study-lab 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.study-lab-shell__body{flex:1 1 auto;min-height:0;max-height:none;overflow:hidden;display:flex;flex-direction:column;padding-bottom:0!important}[data-app-variant=student] .study-lab-shell--skills-map .study-lab-shell__body>main,[data-app-variant=student] .study-lab-shell--skills-map .study-lab-shell__body>#main-content{flex:1 1 auto;min-height:0;max-height:none;display:flex;flex-direction:column}[data-app-variant=student] .study-lab-shell--skills-map .math-concept-map-page{flex:1 1 auto;min-height:0;max-height:none;padding-block:0;gap:0;display:flex;flex-direction:column}[data-app-variant=student] .study-lab-shell--skills-map .math-concept-map-page__stage{flex:1 1 auto;min-height:0;max-height:none;height:auto}[data-app-variant=student] .study-lab-shell--skills-map .math-concept-map,[data-app-variant=student] .study-lab-shell--skills-map .math-concept-map__body,[data-app-variant=student] .study-lab-shell--skills-map .math-concept-map__body--humankind,[data-app-variant=student] 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var(--study-lab-on-accent);--accent-shadow-soft: color-mix(in srgb, var(--study-lab-accent) 28%, transparent);--accent-shadow-mid: color-mix(in srgb, var(--study-lab-accent) 42%, transparent);--focus-ring: color-mix(in srgb, var(--study-lab-accent) 55%, transparent);--text: var(--study-lab-ink);--text-secondary: color-mix(in srgb, var(--study-lab-ink) 72%, transparent);--muted: var(--study-lab-muted);--bg-elevated: var(--study-lab-card);--bg-subtle: var(--study-lab-soft-fill);--surface-muted: var(--study-lab-soft-fill);--border: color-mix(in srgb, var(--study-lab-ink) 10%, transparent);--border-strong: color-mix(in srgb, var(--study-lab-ink) 16%, transparent)}.study-lab-shell__body--graphing-tool{flex:1 1 auto;min-height:0;overflow:hidden;display:flex;flex-direction:column;padding-bottom:0!important}[data-app-variant=student] .study-lab-shell--graphing-tool .landing-main--graphing-tool{flex:1 1 auto;min-height:0;overflow:hidden;display:flex;flex-direction:column;max-width:none;width:100%;margin:0;padding:clamp(.55rem,1.2vw,.85rem) var(--landing-gutter);padding-left:calc(var(--landing-gutter) + env(safe-area-inset-left,0px));padding-right:calc(var(--landing-gutter) + env(safe-area-inset-right,0px))}.study-lab-graphing__title{color:var(--study-lab-ink)}.study-lab-graphing__back,.study-lab-graphing__sign-in{color:var(--study-lab-muted)}.study-lab-graphing__back:hover,.study-lab-graphing__sign-in:hover{color:var(--study-lab-accent)}.study-lab-graphing__intro .graphing-calculator-page__tags{color:var(--study-lab-muted)}[data-app-variant=student] .study-lab-shell--graphing-tool :is(button.primary,a.primary){background:var(--study-lab-accent);color:var(--study-lab-on-accent);border:1px solid color-mix(in srgb,#fff 42%,transparent);border-radius:9999px;box-shadow:inset 0 1px color-mix(in srgb,#fff 28%,transparent),0 10px 24px -8px var(--accent-shadow-mid);font-weight:700;letter-spacing:.01em;transition:background .18s ease,border-color .18s ease,box-shadow .18s ease,transform .15s ease}[data-app-variant=student] .study-lab-shell--graphing-tool :is(button.primary,a.primary):hover:not(:disabled){background:var(--study-lab-accent-deep);border-color:color-mix(in srgb,#fff 28%,transparent);box-shadow:inset 0 1px color-mix(in srgb,#fff 22%,transparent),0 14px 28px -8px var(--accent-shadow-mid);transform:translateY(-1px)}[data-app-variant=student] .study-lab-shell--graphing-tool :is(button.primary,a.primary):active:not(:disabled){transform:translateY(0) scale(.985);box-shadow:inset 0 1px color-mix(in srgb,#fff 18%,transparent),0 6px 16px -6px var(--accent-shadow-mid)}[data-app-variant=student] .study-lab-shell--graphing-tool .build-graphing__add{background:linear-gradient(180deg,color-mix(in srgb,var(--study-lab-accent) 16%,#fff),color-mix(in srgb,var(--study-lab-accent) 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.65rem}.study-lab-maps__outline-chrome-label{min-width:0;flex:0 0 auto}.study-lab-maps__outline-fold{display:inline-flex;flex-wrap:wrap;align-items:center;gap:.25rem;text-transform:none;letter-spacing:0}.study-lab-maps__outline-fold-btn{appearance:none;margin:0;padding:.28rem .55rem;border-radius:999px;border:1px solid color-mix(in srgb,var(--study-lab-ink) 12%,transparent);background:var(--study-lab-card, #fff);color:var(--study-lab-ink);font:650 .68rem/1.2 var(--font-sans, inherit);cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:border-color .12s ease,background .12s ease,color .12s ease}.study-lab-maps__outline-fold-btn:hover{border-color:color-mix(in srgb,var(--study-lab-accent) 40%,transparent);background:color-mix(in srgb,var(--study-lab-accent) 8%,var(--study-lab-card, #fff));color:var(--study-lab-accent-deep, var(--study-lab-accent))}.study-lab-maps__outline-fold-btn:focus-visible{outline:3px solid var(--focus-ring, var(--study-lab-accent));outline-offset:2px}.study-lab-maps__outline-chrome-actions{text-align:right;padding-inline-end:.2rem;min-width:11rem}.study-lab-maps__outline{list-style:none;margin:0;padding:.2rem 0 .4rem}.study-lab-maps__outline-row{--outline-depth: 0;--outline-pad: calc(var(--outline-depth) * var(--outline-indent-step, 1.85rem));display:flex;flex-direction:column;min-height:2.25rem;padding:.05rem .65rem .2rem .4rem;border-bottom:1px solid color-mix(in srgb,var(--study-lab-ink) 6%,transparent);position:relative;transition:background .15s ease}.study-lab-maps__outline-row-main{display:grid;grid-template-columns:var(--outline-cols);gap:var(--outline-col-gap);align-items:center;min-height:2.25rem;padding-inline-start:var(--outline-pad);background-image:repeating-linear-gradient(to right,transparent 0,transparent calc(var(--outline-indent-step, 1.85rem) - 1.5px),var(--outline-guide, color-mix(in srgb, var(--study-lab-ink) 18%, transparent)) calc(var(--outline-indent-step, 1.85rem) - 1.5px),var(--outline-guide, color-mix(in srgb, var(--study-lab-ink) 18%, transparent)) var(--outline-indent-step, 1.85rem));background-size:var(--outline-pad) 100%;background-position:0 0;background-repeat:no-repeat}.study-lab-maps__outline-row:last-child{border-bottom:none}.study-lab-maps__outline-row:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent}.study-lab-maps__outline-row:hover{background:color-mix(in srgb,var(--study-lab-ink) 3.5%,transparent)}.study-lab-maps__outline-row--selected{background:color-mix(in srgb,var(--study-lab-accent) 12%,transparent)}.study-lab-maps__outline-row--selected:before{background:var(--study-lab-accent)}.study-lab-maps__outline-row--root{font-weight:700;background:color-mix(in srgb,var(--study-lab-accent) 8%,transparent)}.study-lab-maps__outline-row--root .study-lab-maps__outline-input,.study-lab-maps__outline-row--root .study-lab-maps__outline-preview{font-weight:700;font-size:1.02rem}.study-lab-maps__outline-row--l1 .study-lab-maps__outline-input,.study-lab-maps__outline-row--l1 .study-lab-maps__outline-preview{font-weight:650}.study-lab-maps__outline-row--flash{animation:study-lab-maps-row-flash 1.25s ease}@keyframes study-lab-maps-row-flash{0%{background:color-mix(in srgb,var(--study-lab-accent) 42%,transparent);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--study-lab-accent) 55%,transparent)}to{background:color-mix(in srgb,var(--study-lab-accent) 12%,transparent);box-shadow:none}}.study-lab-maps__outline-gutter{display:flex;align-items:center;justify-content:center;min-height:0;align-self:center;opacity:0;transition:opacity .12s ease}.study-lab-maps__outline-row:hover .study-lab-maps__outline-gutter,.study-lab-maps__outline-row--selected .study-lab-maps__outline-gutter{opacity:.55}.study-lab-maps__outline-handle{width:.45rem;height:.95rem;border-radius:2px;background:repeating-linear-gradient(to bottom,color-mix(in srgb,var(--study-lab-ink) 35%,transparent) 0 2px,transparent 2px 4px)}.study-lab-maps__outline-disclose{box-sizing:border-box;width:var(--outline-col-disclose, 1.85rem);height:1.85rem;margin:0;display:inline-flex;align-items:center;justify-content:center;border:1.5px solid color-mix(in srgb,var(--mm-accent, var(--study-lab-accent)) 55%,var(--study-lab-ink));background:color-mix(in srgb,var(--mm-accent, var(--study-lab-accent)) 8%,transparent);cursor:pointer;color:var(--mm-accent, var(--study-lab-accent));padding:0;border-radius:7px;justify-self:center;align-self:center;transition:background .12s ease,border-color .12s ease,color .12s ease,box-shadow .12s ease}.study-lab-maps__outline-disclose-icon{display:block;flex-shrink:0}.study-lab-maps__outline-disclose:hover{background:color-mix(in srgb,var(--mm-accent, var(--study-lab-accent)) 14%,var(--study-lab-card, #fff));border-color:color-mix(in srgb,var(--mm-accent, var(--study-lab-accent)) 70%,transparent)}.study-lab-maps__outline-disclose:focus-visible{outline:3px solid var(--focus-ring, var(--study-lab-accent));outline-offset:2px}.study-lab-maps__outline-disclose.is-expanded{background:color-mix(in srgb,var(--mm-accent, var(--study-lab-accent)) 16%,var(--study-lab-card, #fff));border-color:color-mix(in srgb,var(--mm-accent, var(--study-lab-accent)) 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inherit);text-align:left;cursor:pointer;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:border-color .12s ease,background .12s ease,color .12s ease}.study-lab-maps__outline-children-summary:hover{border-color:color-mix(in srgb,var(--study-lab-accent) 35%,transparent);background:color-mix(in srgb,var(--study-lab-accent) 8%,transparent);color:var(--study-lab-accent-deep, var(--study-lab-accent))}.study-lab-maps__outline-children-summary:focus-visible{outline:3px solid var(--focus-ring, var(--study-lab-accent));outline-offset:2px}.study-lab-maps__outline-input,.study-lab-maps__outline-preview{width:100%;box-sizing:border-box;min-height:var(--outline-col-disclose, 1.85rem);border:1px solid transparent;border-radius:6px;padding:.35rem .45rem;background:transparent;font:inherit;color:var(--study-lab-ink);text-align:left;line-height:1.25}.study-lab-maps__outline-preview{cursor:text;display:block}.study-lab-maps__outline-input:focus{outline:none;border-color:color-mix(in srgb,var(--study-lab-accent) 55%,transparent);background:var(--study-lab-card, #fff);box-shadow:0 0 0 2px color-mix(in srgb,var(--study-lab-accent) 18%,transparent)}.study-lab-maps__outline-input::placeholder{color:color-mix(in srgb,var(--study-lab-muted) 80%,transparent)}.study-lab-maps__outline-actions{display:grid;grid-template-columns:repeat(6,1.65rem);justify-content:end;align-items:center;gap:.12rem;min-width:11rem;height:1.7rem;margin:0;opacity:.4;transition:opacity .12s ease;align-self:center}.study-lab-maps__outline-actions button.is-active{color:var(--mm-accent, var(--study-lab-accent-deep, var(--study-lab-accent)));background:color-mix(in srgb,var(--mm-accent, var(--study-lab-accent)) 14%,transparent)}.study-lab-maps__outline-note{display:block;margin:.1rem 0 .35rem;padding:0;max-width:100%}.study-lab-maps__outline-note-input{width:100%;box-sizing:border-box;min-height:2.75rem;resize:vertical;border:1px solid color-mix(in srgb,var(--study-lab-ink) 12%,transparent);border-radius:8px;padding:.45rem .6rem;background:color-mix(in srgb,var(--study-lab-ink) 2.5%,var(--study-lab-card, #fff));color:var(--study-lab-ink);font:inherit;font-size:.9rem;line-height:1.45}.study-lab-maps__outline-note-input:focus{outline:none;border-color:color-mix(in srgb,var(--study-lab-accent) 55%,transparent);box-shadow:0 0 0 2px color-mix(in srgb,var(--study-lab-accent) 18%,transparent);background:var(--study-lab-card, #fff)}.study-lab-maps__outline-note-input::placeholder{color:color-mix(in srgb,var(--study-lab-muted) 80%,transparent)}.study-lab-maps__outline-note-preview{display:block;box-sizing:border-box;width:100%;max-width:100%;text-align:left;border:none;background:transparent;margin:.05rem 0 .3rem;padding:.15rem .45rem .25rem;font:inherit;font-size:.82rem;line-height:1.35;color:var(--study-lab-muted);cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.study-lab-maps__outline-note-preview:hover{color:var(--study-lab-ink)}.study-lab-maps__outline-row:hover .study-lab-maps__outline-actions,.study-lab-maps__outline-row--selected .study-lab-maps__outline-actions,.study-lab-maps__outline-row:focus-within .study-lab-maps__outline-actions{opacity:1}.study-lab-maps__outline-actions button{box-sizing:border-box;width:1.65rem;height:1.65rem;display:inline-flex;align-items:center;justify-content:center;border:none;background:transparent;cursor:pointer;color:var(--study-lab-muted);padding:0;margin:0;border-radius:6px;line-height:0;flex-shrink:0}.study-lab-maps__outline-action-icon{display:block;width:.875rem;height:.875rem;flex-shrink:0}.study-lab-maps__outline-actions button:hover:not(:disabled){background:color-mix(in srgb,var(--study-lab-ink) 8%,transparent);color:var(--study-lab-ink)}.study-lab-maps__outline-actions-delete:hover:not(:disabled){background:color-mix(in srgb,#f43f5e 14%,transparent);color:#e11d48}.study-lab-maps__outline-actions button:disabled{opacity:.28;cursor:not-allowed}@media(max-width:720px){.study-lab-maps__outline-shell{--outline-col-gutter: .75rem;--outline-col-disclose: 1.6rem;--outline-indent-step: 1.5rem;--outline-cols: var(--outline-col-gutter) var(--outline-col-disclose) minmax(0, 1fr)}.study-lab-maps__outline-chrome-actions{display:none}.study-lab-maps__outline-chrome-main{grid-column:3 / -1}.study-lab-maps__outline-fold-btn{padding:.32rem .5rem;font-size:.65rem}.study-lab-maps__outline-row-main{grid-template-rows:auto auto}.study-lab-maps__outline-actions{grid-column:2 / -1;grid-row:2;width:100%;min-width:0;justify-content:start;margin:.15rem 0 .25rem;opacity:1}.study-lab-maps__outline-note,.study-lab-maps__outline-note-preview{max-width:100%}}.study-lab-maps__title-display{display:inline;line-height:1.35}.study-lab-maps__title-display[data-empty]{color:var(--study-lab-muted);font-style:italic}.study-lab-maps__math{display:inline-block;vertical-align:middle;margin:0 .1em;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.study-lab-maps__math--display{display:block;margin:.2rem 0}.study-lab-maps__math .katex{font-size:.95em}.study-lab-maps__node-preview,.study-lab-maps__node-input{overflow-wrap:anywhere;word-break:break-word}.study-lab-maps__canvas-panel{display:flex;flex-direction:column;gap:.55rem;min-height:0}.study-lab-maps__canvas-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:.35rem;padding:.28rem;border-radius:9999px;border:1px solid color-mix(in srgb,var(--study-lab-ink) 8%,transparent);background:color-mix(in srgb,var(--study-lab-soft-fill, #f7f7f7) 72%,var(--study-lab-card, #fff))}.study-lab-maps__canvas-layout-toggle{display:inline-flex;border-radius:9999px;border:1px solid color-mix(in srgb,var(--study-lab-ink) 10%,transparent);background:var(--study-lab-card, #fff);overflow:hidden}.study-lab-maps__canvas-layout-toggle button{display:inline-flex;align-items:center;justify-content:center;min-height:2.35rem;border:none;background:transparent;padding:.38rem .85rem;font-weight:650;font-size:.82rem;cursor:pointer;color:var(--study-lab-muted);touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:background .12s ease,color .12s ease,transform .12s ease}.study-lab-maps__canvas-layout-toggle button:active{transform:scale(.97)}.study-lab-maps__canvas-layout-toggle button.is-active{background:var(--study-lab-accent);color:var(--study-lab-on-accent)}.study-lab-maps__canvas-tool{display:inline-flex;align-items:center;justify-content:center;min-height:2.35rem;border:1px solid transparent;background:transparent;color:var(--study-lab-ink);border-radius:9999px;padding:.38rem .85rem;font-weight:650;font-size:.82rem;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:background .12s ease,color .12s ease,border-color .12s ease,transform .12s ease}.study-lab-maps__canvas-tool:hover{background:var(--study-lab-card, #fff);border-color:color-mix(in srgb,var(--study-lab-accent) 35%,transparent);color:var(--study-lab-accent-deep, var(--study-lab-accent))}.study-lab-maps__canvas-tool:active{transform:scale(.97)}.study-lab-maps__canvas-zoom{min-width:2.75rem;text-align:center;font-size:.8rem;font-weight:650;color:var(--study-lab-muted);font-variant-numeric:tabular-nums}.study-lab-maps__canvas-wrap{position:relative;overflow:hidden;min-height:min(56vh,32rem);max-height:min(72vh,44rem);height:min(72vh,44rem);border-radius:var(--radius-lg, .85rem);border:1px solid color-mix(in srgb,var(--study-lab-ink) 8%,transparent);background:radial-gradient(circle at 50% 42%,color-mix(in srgb,var(--study-lab-accent) 14%,transparent),transparent 46%),linear-gradient(180deg,color-mix(in srgb,var(--study-lab-soft-fill, #f7f7f7) 55%,var(--study-lab-card, #fff)),var(--study-lab-card, var(--bg-elevated)));box-shadow:inset 0 1px color-mix(in srgb,#fff 55%,transparent);cursor:grab;touch-action:none;user-select:none}[data-app-variant=student][data-theme=dark] .study-lab-maps__canvas-wrap{box-shadow:inset 0 1px color-mix(in srgb,#fff 6%,transparent)}.study-lab-maps__canvas-wrap--panning,.study-lab-maps__canvas-wrap--dragging{cursor:grabbing}.study-lab-maps__canvas-stage{position:absolute;left:0;top:0;will-change:transform;overflow:visible}.study-lab-maps__canvas-world{position:relative;overflow:visible}.study-lab-maps__canvas-edges{position:absolute;inset:0;pointer-events:none;overflow:visible}.study-lab-maps__edge{stroke:color-mix(in srgb,var(--study-lab-ink) 22%,transparent);stroke-width:1.6;stroke-linecap:round}.study-lab-maps__node{position:absolute;display:flex;align-items:center;justify-content:center;box-sizing:border-box;padding:.4rem .65rem;border-radius:12px;background:var(--study-lab-card, #fff);border:1.5px solid color-mix(in srgb,var(--study-lab-ink) 12%,transparent);box-shadow:0 1px 2px color-mix(in srgb,var(--study-lab-ink) 5%,transparent),0 6px 16px color-mix(in srgb,var(--study-lab-ink) 4%,transparent);cursor:grab;z-index:1;touch-action:none;transition:border-color .15s ease,box-shadow .15s ease,background .15s ease}.study-lab-maps__node--left{border-color:color-mix(in srgb,var(--study-lab-ink) 12%,transparent)}.study-lab-maps__node--right{border-color:color-mix(in srgb,var(--study-lab-accent) 28%,transparent)}.study-lab-maps__node-collapse{position:absolute;top:50%;width:1.15rem;height:1.15rem;margin-top:-.575rem;border-radius:9999px;border:1px solid color-mix(in srgb,var(--study-lab-ink) 16%,transparent);background:var(--study-lab-card, #fff);color:var(--study-lab-muted);font:700 .7rem/1 system-ui,sans-serif;padding:0;cursor:pointer;z-index:2;display:inline-flex;align-items:center;justify-content:center}.study-lab-maps__node--right .study-lab-maps__node-collapse{right:-.55rem}.study-lab-maps__node--left .study-lab-maps__node-collapse{left:-.55rem}.study-lab-maps__node--root .study-lab-maps__node-collapse{right:-.55rem;left:auto}.study-lab-maps__node-collapse:hover{border-color:var(--study-lab-accent);color:var(--study-lab-accent-deep, var(--study-lab-accent))}.study-lab-maps__node--dragging{cursor:grabbing;z-index:5;box-shadow:0 0 0 2px color-mix(in srgb,var(--study-lab-accent) 40%,transparent),0 8px 20px color-mix(in srgb,var(--study-lab-ink) 16%,transparent);transition:none}.study-lab-maps__node--root{background:color-mix(in srgb,var(--study-lab-accent) 18%,var(--study-lab-card, #fff));border-color:color-mix(in srgb,var(--study-lab-accent) 72%,var(--study-lab-ink));border-width:2px;font-weight:700;z-index:2;box-shadow:0 0 0 3px color-mix(in srgb,var(--study-lab-accent) 16%,transparent),0 8px 20px color-mix(in srgb,var(--study-lab-accent) 14%,transparent)}.study-lab-maps__node--selected{border-color:var(--study-lab-accent);box-shadow:0 0 0 2px color-mix(in srgb,var(--study-lab-accent) 35%,transparent),0 4px 14px color-mix(in srgb,var(--study-lab-ink) 10%,transparent);z-index:3}.study-lab-maps__node--flash{animation:study-lab-maps-node-flash 1.25s ease}@keyframes study-lab-maps-node-flash{0%{background:color-mix(in srgb,var(--study-lab-accent) 42%,var(--study-lab-card, #fff));box-shadow:0 0 0 3px color-mix(in srgb,var(--study-lab-accent) 45%,transparent)}to{box-shadow:0 0 0 2px color-mix(in srgb,var(--study-lab-accent) 35%,transparent)}}.study-lab-maps__node-input,.study-lab-maps__node-preview{width:100%;border:none;background:transparent;text-align:center;font:650 .78rem/1.3 system-ui,sans-serif;color:var(--study-lab-ink);padding:0;cursor:inherit;user-select:text;white-space:normal;overflow-wrap:anywhere;word-break:break-word}.study-lab-maps__canvas-wrap--dragging .study-lab-maps__node-input,.study-lab-maps__canvas-wrap--dragging .study-lab-maps__node-preview{pointer-events:none;user-select:none}.study-lab-maps__node-preview{display:block;overflow:hidden;max-height:100%;line-height:1.3}.study-lab-maps__node-preview .katex{font-size:1em}.study-lab-maps__node--root .study-lab-maps__node-input,.study-lab-maps__node--root .study-lab-maps__node-preview{color:var(--study-lab-ink);font-weight:750}.study-lab-maps__node-input:focus{outline:none;cursor:text}.study-lab-maps__node-input::placeholder{color:color-mix(in srgb,var(--study-lab-muted) 85%,transparent)}@media(prefers-reduced-motion:reduce){.study-lab-maps__outline-row--flash,.study-lab-maps__node--flash{animation:none}}.study-lab-maps__theme-surface{--mm-accent: var(--study-lab-accent);display:flex;flex-direction:column;gap:.65rem;min-height:0}.study-lab-maps__theme-surface--compact .study-lab-maps__outline-row-main{min-height:2.1rem}.study-lab-maps__style-bar{display:flex;flex-wrap:wrap;align-items:center;gap:.55rem .85rem;padding:.55rem .75rem;border-radius:.85rem;background:var(--study-lab-card);border:1px solid color-mix(in srgb,var(--study-lab-ink) 8%,transparent)}.study-lab-maps__style-bar-label{font:700 .68rem/1 var(--font-display, 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inherit);color:var(--study-lab-ink)}.mistake-book-peer-share__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.55rem}.mistake-book-peer-share__row{display:flex;align-items:flex-start;justify-content:space-between;gap:.75rem;padding:.8rem .85rem;border-radius:.85rem;border:1px solid color-mix(in srgb,var(--study-lab-ink) 8%,transparent);background:color-mix(in srgb,var(--study-lab-ink) 2.5%,transparent)}.mistake-book-peer-share__row>div:first-child{min-width:0;flex:1 1 auto}.mistake-book-peer-share__row-title{margin:0;font:600 .875rem/1.3 var(--font-sans, inherit);color:var(--study-lab-ink)}.mistake-book-peer-share__row-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;margin-top:.3rem}.mistake-book-peer-share__status{display:inline-flex;align-items:center;padding:.15rem .45rem;border-radius:9999px;font:700 .68rem/1.2 var(--font-sans, inherit);letter-spacing:.02em;background:color-mix(in srgb,var(--study-lab-ink) 7%,transparent);color:var(--study-lab-muted)}.mistake-book-peer-share__status--active{background:color-mix(in srgb,var(--study-lab-accent) 14%,transparent);color:var(--study-lab-accent-deep)}.mistake-book-peer-share__status--expired{background:color-mix(in srgb,#b45309 14%,transparent);color:#b45309}.mistake-book-peer-share__status--revoked{background:color-mix(in srgb,#b9123a 12%,transparent);color:#b9123a}.mistake-book-peer-share__invite-chip{font:700 .75rem/1.2 var(--font-mono, ui-monospace, monospace);letter-spacing:.06em;color:var(--study-lab-ink)}.mistake-book-peer-share__row-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.35rem;flex-shrink:0}.mistake-book-peer-share__row-actions button{border:none;border-radius:9999px;padding:.4rem .7rem;background:transparent;box-shadow:inset 0 0 0 1.5px var(--study-lab-accent-border);color:var(--study-lab-accent-deep);font:600 .75rem/1.2 var(--font-sans, inherit);cursor:pointer}.mistake-book-peer-share__row-actions button:hover:not(:disabled){background:var(--study-lab-accent-soft)}.mistake-book-peer-share__row-actions button:focus-visible{outline:3px solid var(--study-lab-accent);outline-offset:2px}.mistake-book-peer-share__row-actions button:disabled{opacity:.55;cursor:not-allowed}.mistake-book-peer-share__preview{margin-top:.25rem;padding-top:.85rem;border-top:1px solid color-mix(in srgb,var(--study-lab-ink) 10%,transparent);display:flex;flex-direction:column;gap:.65rem}.mistake-book-peer-share__preview-list{list-style:none;margin:0;padding:0;display:grid;gap:.55rem;max-height:14rem;overflow:auto}.mistake-book-peer-share__preview-list>li{padding:.7rem .75rem;border-radius:.75rem;background:color-mix(in srgb,var(--study-lab-ink) 3%,transparent);border:1px solid color-mix(in srgb,var(--study-lab-ink) 7%,transparent)}.mistake-book-peer-share__preview-pack{margin:0;font:700 .72rem/1.2 var(--font-display, 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var(--study-lab-accent-border)}.study-lab-mistake-book__billing-btn--secondary:hover:not(:disabled){background:var(--study-lab-accent-soft)}.study-lab-mistake-book__panel{overflow:visible;border-radius:var(--radius-xl, 1rem);background:var(--study-lab-card);border:1px solid color-mix(in srgb,var(--study-lab-ink) 8%,transparent);box-shadow:0 8px 22px color-mix(in srgb,#000 4%,transparent)}.study-lab-mistake-book .mistake-book__btn-primary{background:var(--study-lab-accent);color:var(--study-lab-on-accent);box-shadow:inset 0 1px color-mix(in srgb,#fff 28%,transparent),0 10px 24px -8px color-mix(in srgb,var(--study-lab-accent) 45%,transparent)}.study-lab-mistake-book .mistake-book__btn-primary:hover:not(:disabled){background:var(--study-lab-accent-deep)}.study-lab-mistake-book .mistake-book__btn-primary:disabled{background:color-mix(in srgb,var(--study-lab-accent) 40%,transparent);color:var(--study-lab-on-accent)}.study-lab-mistake-book .mistake-book__btn-primary--lift{box-shadow:0 8px 20px -8px color-mix(in srgb,var(--study-lab-accent) 55%,transparent)}.study-lab-mistake-book .mistake-book__tab--active{background:var(--study-lab-accent);color:var(--study-lab-on-accent)}.study-lab-mistake-book .mistake-book__add-btn{border-color:var(--study-lab-accent-border);color:var(--study-lab-accent-deep);background:color-mix(in srgb,var(--study-lab-accent-soft) 55%,var(--study-lab-card))}.study-lab-mistake-book .mistake-book__mastery-pill{color:var(--study-lab-accent-deep);background:var(--study-lab-accent-soft);box-shadow:inset 0 0 0 1px var(--study-lab-accent-border)}.study-lab-mistake-book .mistake-book__option--selected{border-color:var(--study-lab-accent-border);background:var(--study-lab-accent-soft);color:var(--study-lab-accent-deep)}.study-lab-mistake-book .mistake-book__practice-bar{background:color-mix(in srgb,var(--study-lab-card) 94%,transparent);border-top:1px solid color-mix(in srgb,var(--study-lab-ink) 10%,transparent)}.study-lab-mistake-book 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inherit);letter-spacing:.12em;text-transform:uppercase;color:var(--study-lab-muted)}.student-schedule-manage--study-lab .student-schedule-manage__add{min-height:2rem;padding:.4rem .85rem;font-size:.75rem}.student-schedule-manage--study-lab .student-schedule-manage__add-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.55rem;padding:.85rem;border-radius:.9rem;border:1px solid color-mix(in srgb,var(--study-lab-ink) 10%,transparent);background:var(--study-lab-soft-fill)}.student-schedule-manage--study-lab .student-schedule-manage__input--full{grid-column:1 / -1}.student-schedule-manage--study-lab .student-schedule-manage__muted{margin:0;font:400 .8rem / 1.45 var(--font-sans, inherit);color:var(--study-lab-muted)}.student-schedule-manage--study-lab .student-schedule-manage__list{display:flex;flex-direction:column;gap:.4rem;margin:0;padding:0;list-style:none}.student-schedule-manage--study-lab 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