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20px;border-left:0;border-bottom:1px solid rgb(var(--subject-rgb)/.16)}.AccountPage_continueIcon__V8dZh{width:60px;height:60px;border-radius:18px;box-shadow:0 0 0 5px rgb(255 255 255/.7),0 16px 26px -16px var(--subject-color)}.AccountPage_continueBody__rc8eQ{justify-items:stretch}.AccountPage_continueButton__A7pS1{justify-content:center}}.Header_bar__Vjmqe{--bar-ease:cubic-bezier(0.2,0.7,0.2,1);--bar-spring:cubic-bezier(0.34,1.25,0.64,1);--bar-fast:160ms;position:fixed;inset:0 0 auto;z-index:50;padding:1rem;background:rgb(var(--home-paper));border-bottom:1px solid transparent;transition:padding .32s var(--bar-ease),background-color .3s ease,border-color .3s ease,box-shadow .3s ease}.Header_bar__Vjmqe[data-scrolled]{padding-block:.5rem;background:rgb(var(--home-paper)/.86);border-bottom-color:rgb(var(--home-ink)/.08);box-shadow:0 12px 30px -26px rgb(var(--home-ink)/.55);backdrop-filter:saturate(1.5) blur(16px)}@media (min-width:40rem){.Header_bar__Vjmqe{padding-inline:1.5rem}}@media 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(min-width:80rem){.Header_rail__G7i4q{display:block}}.Header_highlight__YD6aN{position:absolute;top:.25rem;bottom:.25rem;left:0;width:var(--highlight-w,0);transform:translateX(var(--highlight-x,0));border-radius:999px;background:rgb(var(--home-paper));box-shadow:inset 0 0 0 1px rgb(var(--home-ink)/.07),0 1px 2px rgb(var(--home-ink)/.08),0 8px 18px -10px rgb(var(--home-ink)/.35);opacity:0;transition:opacity .2s ease}.Header_rail__G7i4q[data-highlight=on] .Header_highlight__YD6aN{opacity:1}.Header_rail__G7i4q[data-ready] .Header_highlight__YD6aN{transition:transform .42s var(--bar-spring),width .42s var(--bar-spring),opacity .2s ease}.Header_links__D_B0E{display:flex;align-items:center;gap:.125rem}.Header_item__0ZoJM{display:flex;align-items:center;border-radius:999px}.Header_divider__eKLtJ{align-self:center;width:1px;height:1rem;margin-inline:.375rem;background:rgb(var(--home-ink)/.14)}.Header_link__aGxS9{position:relative;display:inline-flex;align-items:center;gap:.5rem;min-height:2.5rem;padding:0 1rem 0 .875rem;border-radius:999px;font-size:.9375rem;font-weight:500;white-space:nowrap;color:rgb(var(--home-ink)/.66);transition:color var(--bar-fast) ease-out}.Header_item__0ZoJM:has(.Header_disclose__ml_8H) .Header_link__aGxS9{padding-right:.25rem}.Header_linkIcon__NA1E6{width:1rem;height:1rem;flex:none;color:rgb(var(--home-ink)/.4);transition:color var(--bar-fast) ease-out,transform .32s var(--bar-spring)}.Header_item__0ZoJM[data-highlighted] .Header_link__aGxS9,.Header_link__aGxS9[aria-current=page]{color:rgb(var(--home-ink))}.Header_item__0ZoJM[data-highlighted] 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svg{width:1rem;height:1rem;transition:transform .32s var(--bar-spring)}.Header_disclose__ml_8H[aria-expanded=true]{background:rgb(var(--home-ember)/.12);color:rgb(var(--home-ember))}.Header_disclose__ml_8H[aria-expanded=true] svg{transform:rotate(180deg)}.Header_actions__iqNEP{margin-left:auto;display:flex;align-items:center;gap:.5rem}@media (min-width:80rem){.Header_actions__iqNEP{margin-left:0}}.Header_account__H6z_2,.Header_fullAccess___Jmai{display:none;align-items:center;justify-content:center;gap:.5rem;min-height:2.75rem;border-radius:999px;font-size:.9375rem;font-weight:500;white-space:nowrap;transition:background-color var(--bar-fast) ease-out,border-color var(--bar-fast) ease-out,color var(--bar-fast) ease-out,transform var(--bar-fast) ease-out,box-shadow var(--bar-fast) ease-out}@media (min-width:40rem){.Header_account__H6z_2,.Header_fullAccess___Jmai{display:inline-flex}}.Header_account__H6z_2{padding:.5rem 1.125rem;border:1px solid rgb(var(--home-ink)/.14);color:rgb(var(--home-ink));background:rgb(var(--home-paper))}.Header_account__H6z_2:hover{border-color:rgb(var(--home-ink)/.45);background:rgb(var(--home-ink)/.03)}.Header_fullAccess___Jmai{position:relative;isolation:isolate;overflow:hidden;padding:.5rem 1rem .5rem 1.25rem;color:white;background:rgb(var(--home-ember));box-shadow:inset 0 1px 0 rgb(255 255 255/.22),0 10px 22px -12px rgb(var(--home-ember)/.85)}.Header_fullAccess___Jmai:before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(105deg,transparent 30%,rgb(255 255 255/.28) 50%,transparent 70%);transform:translateX(-120%);transition:transform .7s var(--bar-ease)}.Header_fullAccess___Jmai svg{width:1rem;height:1rem;transition:transform var(--bar-fast) var(--bar-ease)}.Header_fullAccess___Jmai:hover{background:rgb(var(--home-ember-deep));transform:translateY(-1px);box-shadow:inset 0 1px 0 rgb(255 255 255/.22),0 14px 26px -12px rgb(var(--home-ember)/.9)}.Header_fullAccess___Jmai:hover:before{transform:translateX(120%)}.Header_fullAccess___Jmai:hover svg{transform:translateX(3px)}.Header_account__H6z_2:active,.Header_fullAccess___Jmai:active{transform:scale(.97)}.Header_menuButton__XzVV4{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-width:2.75rem;height:2.75rem;padding:0 1rem 0 .875rem;border:1px solid rgb(var(--home-ink)/.14);border-radius:999px;font-size:.9375rem;font-weight:500;color:rgb(var(--home-ink));background:rgb(var(--home-paper));transition:background-color var(--bar-fast) ease-out,border-color var(--bar-fast) ease-out,transform var(--bar-fast) ease-out}.Header_menuButton__XzVV4:hover{border-color:rgb(var(--home-ink)/.45);background:rgb(var(--home-ink)/.03)}.Header_menuButton__XzVV4:active{transform:scale(.96)}.Header_menuButton__XzVV4 svg{width:1.25rem;height:1.25rem}@media (min-width:40rem){.Header_menuButton__XzVV4{padding:0}.Header_menuLabel__RlsO8{display:none}}@media (min-width:80rem){.Header_menuButton__XzVV4{display:none}}.Header_spacer__o7R7f{height:var(--header-h)}.Header_panel___xDYl{position:absolute;top:calc(100% + 1.125rem);left:var(--panel-center,50%);width:min(72rem,calc(100vw - 2rem));translate:-50% 0;display:none;grid-template-columns:minmax(15rem,17rem) repeat(3,minmax(0,1fr));padding:.5rem;border-radius:1.5rem;background:rgb(var(--home-paper));box-shadow:0 0 0 1px rgb(var(--home-ink)/.07),0 12px 24px -16px rgb(var(--home-ink)/.2),0 40px 80px -40px rgb(var(--home-ink)/.45);opacity:0;visibility:hidden;transform:translateY(-8px) scale(.985);transform-origin:50% 0;transition:opacity .18s ease,transform .28s var(--bar-ease),visibility 0s linear .28s}@media (min-width:80rem){.Header_panel___xDYl{display:grid}}.Header_panel___xDYl[data-open]{opacity:1;visibility:visible;transform:none;transition-delay:0s}.Header_panel___xDYl:before{content:"";position:absolute;inset:auto 0 100%;height:1.25rem}.Header_panelIntro__9MRM2{display:flex;flex-direction:column;gap:.75rem;padding:1.5rem;border-radius:1.125rem;color:rgb(244 240 232);background:radial-gradient(120% 70% at 100% 0,rgb(var(--home-ember-glow)/.32),transparent 60%),radial-gradient(90% 60% at 0 100%,rgb(var(--home-math-glow)/.16),transparent 65%),rgb(var(--home-night))}.Header_panelTitle__R1RJm{font-family:var(--font-serif),Georgia,serif;font-size:1.5rem;font-weight:500;line-height:1.15;letter-spacing:-.01em}.Header_panelLede__3q6o4{font-size:.875rem;line-height:1.55;color:rgb(244 240 232/.72)}.Header_panelAll__1FmIi{align-self:flex-start;margin-top:auto;display:inline-flex;align-items:center;gap:.5rem;min-height:2.5rem;padding:0 1rem;border:1px solid rgb(255 255 255/.18);border-radius:999px;font-size:.875rem;font-weight:500;color:white;background:rgb(255 255 255/.08);transition:background-color var(--bar-fast) ease-out,color var(--bar-fast) ease-out,border-color var(--bar-fast) ease-out}.Header_panelAll__1FmIi svg{width:1rem;height:1rem;transition:transform var(--bar-fast) var(--bar-ease)}.Header_panelAll__1FmIi:hover{color:rgb(var(--home-night));background:white;border-color:white}.Header_panelAll__1FmIi:hover svg{transform:translateX(3px)}.Header_drawerSubject__KjP0P[data-subject=math],.Header_subject__QKfa8[data-subject=math]{--subject:var(--home-math);--subject-tint:var(--home-math-tint);--subject-glow:var(--home-math-glow)}.Header_drawerSubject__KjP0P[data-subject=reading],.Header_subject__QKfa8[data-subject=reading]{--subject:var(--home-reading);--subject-tint:var(--home-reading-tint);--subject-glow:var(--home-reading-glow)}.Header_drawerSubject__KjP0P[data-subject=grammar],.Header_subject__QKfa8[data-subject=grammar]{--subject:var(--home-grammar);--subject-tint:var(--home-grammar-tint);--subject-glow:var(--home-grammar-glow)}.Header_subject__QKfa8{display:flex;flex-direction:column;gap:.625rem;padding:1rem .875rem .875rem;opacity:0;transform:translateY(6px);transition:opacity .22s ease,transform .32s var(--bar-ease)}.Header_subject__QKfa8+.Header_subject__QKfa8{border-left:1px solid rgb(var(--home-ink)/.07)}.Header_panel___xDYl[data-open] 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scale(1.05)}.Header_subjectText__o_yfk{display:grid;gap:.125rem;min-width:0}.Header_subjectName__P9bl6{font-family:var(--font-serif),Georgia,serif;font-size:1.25rem;font-weight:500;line-height:1.15;color:rgb(var(--home-ink))}.Header_subjectMeta__6oq8h{display:flex;flex-wrap:wrap;align-items:center;gap:.25rem .5rem;white-space:nowrap;font-size:.875rem;color:rgb(var(--home-muted))}.Header_subjectHere__4RhYV{padding:.0625rem .5rem;border-radius:999px;font-size:.8125rem;font-weight:600;color:rgb(var(--subject));background:rgb(var(--subject-tint))}.Header_subjectHead__xYB_3:hover .Header_subjectHere__4RhYV{background:rgb(var(--home-paper))}.Header_subjectArrow__0jUmv{flex:none;margin-left:auto;width:1.125rem;height:1.125rem;color:rgb(var(--subject));opacity:0;transform:translateX(-4px);transition:opacity var(--bar-fast) ease-out,transform var(--bar-fast) var(--bar-ease)}.Header_subjectHead__xYB_3:focus-visible .Header_subjectArrow__0jUmv,.Header_subjectHead__xYB_3:hover .Header_subjectArrow__0jUmv{opacity:1;transform:none}.Header_skills__nq9R_{display:grid}.Header_skill__E21J6{position:relative;display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.4375rem .5rem;border-radius:.625rem;font-size:.875rem;line-height:1.3;color:rgb(var(--home-ink)/.78);transition:background-color var(--bar-fast) ease-out,color var(--bar-fast) ease-out}.Header_skill__E21J6:before{content:"";position:absolute;left:.3125rem;top:50%;width:3px;height:0;translate:0 -50%;border-radius:999px;background:rgb(var(--subject));transition:height .22s var(--bar-spring)}.Header_skillLabel__L_KrX{transition:transform .22s var(--bar-ease)}.Header_skill__E21J6:hover{color:rgb(var(--home-ink));background:rgb(var(--subject-tint)/.7)}.Header_skill__E21J6:hover:before{height:1rem}.Header_skill__E21J6:hover .Header_skillLabel__L_KrX{transform:translateX(.375rem)}.Header_skillCount__Q_v7v{flex:none;min-width:1.5rem;font-size:.8125rem;font-variant-numeric:tabular-nums;text-align:right;color:rgb(var(--home-ink)/.45);transition:color var(--bar-fast) ease-out}.Header_skill__E21J6:hover .Header_skillCount__Q_v7v{color:rgb(var(--subject))}.Header_overlay__0HP_O{position:fixed;inset:0;z-index:100;overflow:hidden;visibility:hidden;pointer-events:none;transition:visibility 0s linear .36s}.Header_overlay__0HP_O[data-open]{visibility:visible;pointer-events:auto;transition-delay:0s}.Header_scrim__oMyiE{position:absolute;inset:0;background:rgb(var(--home-night)/.35);backdrop-filter:blur(4px);opacity:0;transition:opacity .3s ease}.Header_overlay__0HP_O[data-open] .Header_scrim__oMyiE{opacity:1}.Header_drawer__U30ym{position:absolute;top:0;right:0;display:flex;flex-direction:column;width:min(100%,26rem);height:100%;overflow-y:auto;padding:1.5rem;color:rgb(244 240 232);background:radial-gradient(110% 40% at 100% 0,rgb(var(--home-ember-glow)/.16),transparent 60%),rgb(var(--home-night));box-shadow:-30px 0 60px -30px rgb(0 0 0/.6);transform:translateX(100%);transition:transform .36s cubic-bezier(.76,0,.24,1)}.Header_overlay__0HP_O[data-open] .Header_drawer__U30ym{transform:none}.Header_drawerTop__4l2Xn{display:flex;align-items:center;justify-content:space-between;margin-bottom:2rem}.Header_drawerWordmark__yxdj2{font-family:var(--font-serif),Georgia,serif;font-size:1.5rem;line-height:1}.Header_drawerWordmark__yxdj2 span{color:rgb(var(--home-ember-glow))}.Header_closeButton__ku4SZ{display:grid;place-items:center;width:2.75rem;height:2.75rem;border-radius:999px;transition:background-color var(--bar-fast) ease-out,transform .3s var(--bar-ease)}.Header_closeButton__ku4SZ:hover{background:rgb(255 255 255/.08);transform:rotate(90deg)}.Header_closeButton__ku4SZ svg{width:1.75rem;height:1.75rem}.Header_drawerLinks__wNvOJ{display:grid;gap:.25rem}.Header_drawerLinks__wNvOJ li{opacity:0;transform:translateX(16px);transition:opacity .28s ease,transform .36s var(--bar-ease)}.Header_drawerLinks__wNvOJ li[data-group-start]{margin-top:.75rem;padding-top:1rem;border-top:1px solid rgb(255 255 255/.1)}.Header_overlay__0HP_O[data-open] .Header_drawerLinks__wNvOJ li{opacity:1;transform:none;transition-delay:calc(.12s + var(--item-index) * 40ms)}.Header_drawerLink__tUvi_{display:flex;align-items:center;gap:1rem;border-radius:1rem;padding:.75rem;font-family:var(--font-serif),Georgia,serif;font-size:1.5rem;transition:background-color var(--bar-fast) ease-out}.Header_drawerLink__tUvi_:hover{background:rgb(255 255 255/.06)}.Header_drawerLink__tUvi_[aria-current=page]{background:rgb(var(--home-ember-glow)/.12);color:rgb(var(--home-ember-glow))}.Header_drawerIcon__BOm89{display:grid;place-items:center;width:2.5rem;height:2.5rem;border-radius:.875rem;background:rgb(255 255 255/.08)}.Header_drawerArrow__cD6GW,.Header_drawerIcon__BOm89 svg{width:1.25rem;height:1.25rem}.Header_drawerArrow__cD6GW{margin-left:auto;opacity:.4;transition:transform var(--bar-fast) var(--bar-ease),opacity var(--bar-fast) ease-out}.Header_drawerLink__tUvi_:hover .Header_drawerArrow__cD6GW{opacity:1;transform:translateX(3px)}.Header_drawerSubjects__0FgFO{display:flex;flex-wrap:wrap;gap:.375rem;padding:.25rem .375rem .5rem}.Header_drawerSubject__KjP0P{display:inline-flex;align-items:center;justify-content:center;gap:.375rem;flex:1 1 auto;min-height:2.75rem;padding:0 .625rem;border:1px solid rgb(var(--subject-glow)/.22);border-radius:999px;font-size:.875rem;font-weight:500;color:rgb(var(--subject-glow));background:rgb(var(--subject-glow)/.1);transition:background-color var(--bar-fast) ease-out,border-color var(--bar-fast) ease-out,transform var(--bar-fast) ease-out}.Header_drawerSubject__KjP0P svg{flex:none;width:1rem;height:1rem}.Header_drawerSubject__KjP0P:hover{background:rgb(var(--subject-glow)/.2)}.Header_drawerSubject__KjP0P:active{transform:scale(.96)}.Header_drawerSubject__KjP0P[aria-current=true]{border-color:rgb(var(--subject-glow));background:rgb(var(--subject-glow)/.2)}.Header_drawerFooter__7L44S{margin-top:auto;display:grid;gap:.75rem;padding-top:2rem}.Header_drawerAccount__NPkqk,.Header_drawerFullAccess___gZSM{display:flex;align-items:center;justify-content:center;gap:.5rem;min-height:3.25rem;border-radius:999px;font-size:1rem;font-weight:500;transition:background-color var(--bar-fast) ease-out,border-color var(--bar-fast) ease-out}.Header_drawerFullAccess___gZSM{color:white;background:rgb(var(--home-ember))}.Header_drawerFullAccess___gZSM:hover{background:rgb(var(--home-ember-deep))}.Header_drawerFullAccess___gZSM svg{width:1.125rem;height:1.125rem}.Header_drawerAccount__NPkqk{border:1.5px solid rgb(255 255 255/.25)}.Header_drawerAccount__NPkqk:hover{border-color:white}.Header_bar__Vjmqe a:focus-visible,.Header_bar__Vjmqe button:focus-visible{outline:2px solid rgb(var(--home-ember));outline-offset:3px}.Header_drawer__U30ym a:focus-visible,.Header_drawer__U30ym button:focus-visible,.Header_panelIntro__9MRM2 a:focus-visible{outline:2px solid rgb(var(--home-ember-glow));outline-offset:3px}@media (prefers-reduced-motion:reduce){.Header_bar__Vjmqe,.Header_bar__Vjmqe *,.Header_bar__Vjmqe :after,.Header_bar__Vjmqe :before,.Header_overlay__0HP_O,.Header_overlay__0HP_O *{transition-duration:0s!important;transition-delay:0s!important}}