.shell_shell__8EJUU{min-height:100dvh;background:var(--color-paper)}body:has(.shell_shell__8EJUU [data-constellation=active]),html:has(.shell_shell__8EJUU [data-constellation=active]){overflow:hidden}.shell_shell__8EJUU:has([data-constellation=active]){height:100dvh;overflow:hidden;background:var(--color-media-backdrop)}.shell_shell__8EJUU:has([data-constellation=active]) .shell_mobileNav__yYszo,.shell_shell__8EJUU:has([data-constellation=active]) .shell_topbar__X56cJ{display:none}.shell_shell__8EJUU:has([data-constellation=active]) .shell_content__25_PZ{height:100dvh}.shell_shell__8EJUU:has([data-subject-detail-type=radical]){--active-subject-color:var(--color-radical)}.shell_shell__8EJUU:has([data-subject-detail-type=kanji]){--active-subject-color:var(--color-kanji)}.shell_shell__8EJUU:has([data-subject-detail-type=vocabulary]){--active-subject-color:var(--color-vocabulary)}.shell_shell__8EJUU:has([data-subject-detail-type]) .shell_topbar__X56cJ{background:var(--active-subject-color)}.shell_skipLink__bCR1X{position:fixed;inset-block-start:var(--space-sm);inset-inline-start:var(--space-sm);z-index:calc(var(--z-sticky-nav) + 3);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);background:var(--color-ink);color:var(--color-paper);transform:translateY(-200%);transition:transform var(--dur-micro) var(--ease-out)}.shell_skipLink__bCR1X:focus-visible{transform:translateY(0)}.shell_topbar__X56cJ{position:sticky;inset-block-start:0;z-index:var(--z-sticky-nav);height:calc(var(--banner-height) + var(--space-md));min-height:calc(var(--banner-height) + var(--space-md));display:flex;align-items:flex-start;padding-block-start:var(--space-sm);background:transparent;pointer-events:none}html:has(.shell_shell__8EJUU [data-study-session=active]){--banner-height:0rem}.shell_shell__8EJUU:has([data-study-session=active]) .shell_topbar__X56cJ{display:none}.shell_appbar__GpsFO{inline-size:min(calc(100% - 2rem),96rem);min-height:var(--banner-height);margin-inline:auto;display:grid;grid-template-columns:minmax(11rem,1fr) auto minmax(11rem,1fr);align-items:center;gap:var(--space-lg);padding-inline:clamp(var(--space-md),2.5vw,var(--space-xl));border:var(--rule-thin) solid transparent;border-radius:var(--radius-pill);background:color-mix(in oklch,var(--color-surface) 74%,transparent);box-shadow:none;-webkit-backdrop-filter:saturate(1.1) blur(1rem);backdrop-filter:saturate(1.1) blur(1rem);pointer-events:auto;transform:translateY(0);transform-origin:center top;interpolate-size:allow-keywords;transition:inline-size var(--dur-long) var(--ease-out),border-color var(--dur-long) var(--ease-out),background-color var(--dur-long) var(--ease-out),box-shadow var(--dur-long) var(--ease-out),transform var(--dur-long) var(--ease-out),-webkit-backdrop-filter var(--dur-long) var(--ease-out);transition:inline-size var(--dur-long) var(--ease-out),border-color var(--dur-long) var(--ease-out),background-color var(--dur-long) var(--ease-out),box-shadow var(--dur-long) var(--ease-out),backdrop-filter var(--dur-long) var(--ease-out),transform var(--dur-long) var(--ease-out);transition:inline-size var(--dur-long) var(--ease-out),border-color var(--dur-long) var(--ease-out),background-color var(--dur-long) var(--ease-out),box-shadow var(--dur-long) var(--ease-out),backdrop-filter var(--dur-long) var(--ease-out),transform var(--dur-long) var(--ease-out),-webkit-backdrop-filter var(--dur-long) var(--ease-out)}.shell_topbar__X56cJ[data-floating=true] .shell_appbar__GpsFO{inline-size:fit-content;min-inline-size:min(calc(84% - 1.68rem),80.64rem);max-inline-size:min(calc(100% - 2rem),96rem);border-color:var(--color-rule-2);background:color-mix(in oklch,var(--color-surface) 90%,transparent);box-shadow:var(--shadow-floating);-webkit-backdrop-filter:saturate(1.15) blur(1.25rem);backdrop-filter:saturate(1.15) blur(1.25rem);transform:translateY(var(--space-2xs))}.shell_identityArea__XWUYw{position:relative;min-width:0;display:flex;align-items:center}.shell_backButton__PGMLb{position:absolute;inset-inline-start:0;width:2.75rem;height:2.75rem;display:grid;place-items:center;padding:0;border:var(--rule-thin) solid transparent;border-radius:var(--radius-md);background:transparent;color:var(--color-ink-2);opacity:0;pointer-events:none;transform:translateX(calc(var(--space-xs) * -1));cursor:pointer;transition:opacity var(--dur-micro) var(--ease-in),transform var(--dur-micro) var(--ease-in),background-color var(--dur-micro) var(--ease-out),color var(--dur-micro) var(--ease-out),border-color var(--dur-micro) var(--ease-out)}.shell_backButton__PGMLb[data-visible=true]{opacity:1;pointer-events:auto;transform:translateX(0);animation:shell_backButtonIn__JQ_QR var(--dur-short) var(--ease-out) both}.shell_backButton__PGMLb:focus-visible{outline:2px solid var(--color-focus);outline-offset:1px}.shell_backButton__PGMLb:active{background:var(--color-paper-3);transform:scale(.96)}.shell_backButton__PGMLb:disabled{opacity:0;cursor:not-allowed}.shell_identity__96tr3{min-width:0;width:max-content;max-width:100%;display:flex;align-items:center;gap:var(--space-sm);transform:translateX(0);transition:transform var(--dur-short) var(--ease-out)}.shell_identityArea__XWUYw[data-has-back=true] .shell_identity__96tr3{transform:translateX(calc(2.75rem + var(--space-xs)))}.shell_brandMark__aV4kF{--profile-avatar-size:2.15rem;width:var(--profile-avatar-size);display:flex;flex:none;transition:opacity var(--dur-short) var(--ease-out),transform var(--dur-long) var(--ease-out)}.shell_identityCopy__ZjsDz{min-width:0;display:grid;line-height:1.2}.shell_identityCopy__ZjsDz>strong{overflow:hidden;font-size:var(--text-sm);text-overflow:ellipsis;white-space:nowrap;transition:opacity var(--dur-long) var(--ease-out),transform var(--dur-long) var(--ease-out)}.shell_identityStats__zS_ps{min-width:0;display:flex;align-items:center;gap:var(--space-sm);color:var(--color-muted);font-size:var(--text-xs);transition:transform var(--dur-long) var(--ease-out)}.shell_identityStat__xK534{display:inline-flex;align-items:center;gap:var(--space-3xs);white-space:nowrap}.shell_identityStat__xK534 svg{flex:none}.shell_topbar__X56cJ[data-floating=true] .shell_brandMark__aV4kF{transform:scale(.92)}.shell_topbar__X56cJ[data-floating=true] .shell_identityCopy__ZjsDz>strong{opacity:1;transform:none}.shell_topbar__X56cJ[data-floating=true] .shell_identityStats__zS_ps{transform:none}.shell_primaryNav__sPcTH{position:relative;display:flex;align-items:center;gap:var(--space-md)}.shell_primaryNavItem__wDy8x{display:inline-flex;flex:none}.shell_primaryLink__x7NR1{min-height:2.75rem;display:inline-flex;align-items:center;gap:var(--space-xs);padding:var(--space-xs) 0;border-block-end:2px solid transparent;color:var(--color-muted);font-size:var(--text-sm);font-weight:600;white-space:nowrap;transition:color var(--dur-short) var(--ease-out),border-color var(--dur-short) var(--ease-out),transform var(--dur-micro) var(--ease-out)}.shell_primaryIcon__lalFO{display:none}.shell_primaryLinkActive__myOUU{border-block-end-color:var(--color-accent);color:var(--color-ink)}.shell_primaryLink__x7NR1:active{transform:translateY(1px)}.shell_topActions__VHd0H{min-width:0;display:flex;align-items:center;justify-content:flex-end;gap:var(--space-2xs);pointer-events:none}.shell_topActions__VHd0H>*{pointer-events:auto}.shell_iconAction__RuKNP{width:2.75rem;height:2.75rem;display:grid;place-items:center;flex:none;padding:0;border:var(--rule-thin) solid transparent;border-radius:var(--radius-md);background:transparent;color:var(--color-ink-2);cursor:pointer;transition:background-color var(--dur-short) var(--ease-out),color var(--dur-short) var(--ease-out),border-color var(--dur-short) var(--ease-out),transform var(--dur-micro) var(--ease-out)}.shell_iconActionActive__12_rM{border-color:var(--color-rule-2);background:var(--color-surface);color:var(--color-accent)}.shell_iconAction__RuKNP:active{transform:translateY(1px)}.shell_content__25_PZ{min-width:0}.shell_topError__gg20F{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--space-sm);padding:var(--space-sm) clamp(var(--space-md),2.5vw,var(--space-xl));border-block-end:var(--rule-thin) solid var(--color-danger);color:var(--color-danger);font-size:var(--text-sm)}.shell_loading__byrHY{min-height:100dvh;display:grid;place-items:center}.shell_loading__byrHY>span{color:var(--color-muted)}.shell_sessionError__OA4jR{width:min(calc(100% - 2rem),30rem);display:grid;gap:var(--space-md);padding:var(--space-lg);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-surface)}.shell_sessionError__OA4jR span{color:var(--color-muted)}.shell_bootstrap__tA7cr{min-height:100dvh;display:grid;grid-template-rows:var(--banner-height) minmax(0,1fr);background:var(--color-paper)}.shell_bootstrapBrand__cwxSM{min-height:var(--banner-height);display:flex;align-items:center;gap:var(--space-sm);padding-inline:clamp(var(--space-md),2.5vw,var(--space-xl));border-block-end:var(--rule-thin) solid var(--color-rule-2)}.shell_bootstrapLogo__SVF6e{--kakehashi-mark-size:2rem;--kakehashi-name-size:var(--text-sm);animation:shell_bootstrapLogoIn__2XRTg var(--dur-long) var(--ease-out) both}.shell_bootstrapStatus__7PARu{align-self:center;margin-block-end:var(--banner-height)}@keyframes shell_bootstrapLogoIn__2XRTg{0%{opacity:0;transform:translateX(calc(var(--space-xs) * -1))}}@keyframes shell_backButtonIn__JQ_QR{0%{opacity:0;transform:translateX(calc(var(--space-xs) * -1))}}.shell_mobileNav__yYszo{display:none}html:has(.shell_shell__8EJUU [data-study-session=active]) .shell_mobileNav__yYszo{display:none}.shell_moreLayer__yUkMS{position:fixed;inset:0;z-index:calc(var(--z-sticky-nav) + 2)}.shell_moreBackdrop__fHhTe{position:absolute;inset:0;width:100%;border:0;background:color-mix(in oklch,var(--color-paper) 28%,color-mix(in oklch,var(--color-ink) 60%,transparent));animation:shell_backdropIn__K9J0N var(--dur-short) var(--ease-out)}.shell_moreSheet__McwRN{position:absolute;inset-block-start:calc(var(--banner-height) + var(--space-lg));inset-inline-start:50%;width:min(calc(100% - 2rem),72rem);max-height:calc(100dvh - var(--banner-height) - var(--space-2xl));display:grid;grid-template-rows:auto minmax(0,1fr);overflow:hidden;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-paper);transform:translateX(-50%);animation:shell_menuIn__0LeGk var(--dur-short) var(--ease-out)}.shell_moreHeader__Nm9cO{min-height:4.5rem;display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);padding:var(--space-sm) var(--space-lg);border-block-end:var(--rule-thin) solid var(--color-rule-2)}.shell_moreHeader__Nm9cO h2{font-size:var(--text-lg)}.shell_iconButton__PryIs{width:2.75rem;min-width:2.75rem;padding:0}.shell_moreNav__UUdZY{min-height:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:var(--space-xl);overflow-y:auto;padding:var(--space-lg);overscroll-behavior:contain}.shell_moreNav__UUdZY section{min-width:0;display:grid;align-content:start;gap:var(--space-sm)}.shell_moreNav__UUdZY h3{color:var(--color-muted);font-size:var(--text-sm);font-weight:700}.shell_moreNav__UUdZY section>div{display:grid}.shell_moreLink__mTnm_{width:100%;min-width:0;min-height:2.75rem;display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-xs) 0;border:0;border-block-end:var(--rule-thin) solid var(--color-rule-2);border-radius:0;background:transparent;color:var(--color-ink-2);font:inherit;font-size:var(--text-sm);text-align:start;cursor:pointer;transition:color var(--dur-micro) var(--ease-out)}.shell_moreLink__mTnm_ svg{flex:none;color:var(--color-muted)}.shell_moreLink__mTnm_ span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.shell_moreLinkActive__zgNRw{color:var(--color-accent);font-weight:700}.shell_moreLinkActive__zgNRw svg{color:currentColor}@keyframes shell_backdropIn__K9J0N{0%{opacity:0}}@keyframes shell_menuIn__0LeGk{0%{opacity:0;transform:translate(-50%,-.5rem)}}@media (max-width:74rem) and (min-width:54rem){.shell_appbar__GpsFO{grid-template-columns:minmax(8rem,1fr) auto minmax(11rem,1fr);gap:var(--space-md);padding-inline:clamp(var(--space-md),2vw,var(--space-lg))}.shell_primaryNav__sPcTH{gap:var(--space-2xs)}.shell_secondaryAction__lpKBL{display:none}.shell_primaryLink__x7NR1{width:2rem;justify-content:center;padding-inline:0}.shell_primaryLink__x7NR1 span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.shell_primaryIcon__lalFO{display:block}}@media (max-width:80rem) and (min-width:74.001rem){.shell_appbar__GpsFO{grid-template-columns:minmax(8rem,1fr) auto minmax(11rem,1fr);gap:var(--space-md);padding-inline:clamp(var(--space-md),2vw,var(--space-lg))}.shell_primaryNav__sPcTH{gap:var(--space-sm)}.shell_secondaryAction__lpKBL{display:none}}@media (max-width:88rem) and (min-width:80.001rem){.shell_primaryNav__sPcTH{gap:var(--space-sm)}.shell_secondaryAction__lpKBL{display:none}}@media (max-width:53.999rem){.shell_topbar__X56cJ{height:5rem;min-height:5rem;padding-block-start:var(--space-sm)}.shell_appbar__GpsFO,.shell_topbar__X56cJ[data-floating=true] .shell_appbar__GpsFO{inline-size:calc(100% - 2rem);min-inline-size:0;max-inline-size:none;min-height:4rem;grid-template-columns:minmax(0,1fr) auto;gap:var(--space-sm);padding-inline:var(--space-md);border-color:var(--color-rule-2);background:color-mix(in oklch,var(--color-surface) 90%,transparent);box-shadow:var(--shadow-floating);transform:none}.shell_identityCopy__ZjsDz,.shell_primaryNav__sPcTH{display:none}.shell_brandMark__aV4kF,.shell_topbar__X56cJ[data-floating=true] .shell_brandMark__aV4kF{--profile-avatar-size:2rem;width:var(--profile-avatar-size);transform:none}.shell_iconAction__RuKNP{width:2.5rem;height:2.5rem}.shell_secondaryAction__lpKBL{display:none}.shell_mobileNav__yYszo{position:fixed;inset-inline:0;inset-block-end:0;z-index:var(--z-sticky);display:grid;grid-template-columns:repeat(auto-fit,minmax(0,1fr));padding-block-end:env(safe-area-inset-bottom);border-block-start:var(--rule-thin) solid var(--color-rule);background:var(--color-paper)}.shell_mobileLink__of05X{min-width:0;min-height:3.75rem;display:grid;place-items:center;align-content:center;gap:var(--space-3xs);padding:var(--space-xs);border:0;border-block-start:2px solid transparent;background:transparent;color:var(--color-muted);font:inherit;font-size:var(--text-xs);white-space:nowrap;cursor:pointer}.shell_mobileLinkActive__NMucO{border-block-start-color:var(--color-accent);color:var(--color-ink)}.shell_mobileLink__of05X svg{width:1.25rem;height:1.25rem}.shell_mobileNavHidden__D_D3W{display:none}.shell_moreSheet__McwRN{inset-block:auto calc(3.75rem + env(safe-area-inset-bottom));inset-inline:0;width:100%;max-height:min(78dvh,42rem);border-inline:0;border-block-end:0;border-radius:var(--radius-lg) var(--radius-lg) 0 0;transform:none;animation-name:shell_sheetIn__BUdva}.shell_moreHeader__Nm9cO{min-height:4rem;padding-inline:var(--space-md)}.shell_moreNav__UUdZY{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-lg);padding:var(--space-md)}@keyframes shell_sheetIn__BUdva{0%{opacity:0;transform:translateY(.75rem)}}}@media (max-width:24rem){.shell_moreNav__UUdZY{grid-template-columns:minmax(0,1fr)}}@media (hover:hover) and (pointer:fine){.shell_identity__96tr3:hover .shell_brandMark__aV4kF{opacity:.78}.shell_iconAction__RuKNP:hover{border-color:var(--color-rule-2);background:var(--color-surface);color:var(--color-ink)}.shell_moreLink__mTnm_:hover,.shell_primaryLink__x7NR1:hover{color:var(--color-ink)}}@media (prefers-reduced-motion:reduce){.shell_bootstrapLogo__SVF6e,.shell_moreBackdrop__fHhTe,.shell_moreSheet__McwRN{animation:none}.shell_backButton__PGMLb{animation:none;transition:none}.shell_identity__96tr3{transition:none}.shell_appbar__GpsFO,.shell_brandMark__aV4kF,.shell_identityCopy__ZjsDz>strong,.shell_identityStats__zS_ps{transition-duration:.15s}.shell_topbar__X56cJ[data-floating=true] .shell_appbar__GpsFO,.shell_topbar__X56cJ[data-floating=true] .shell_brandMark__aV4kF,.shell_topbar__X56cJ[data-floating=true] .shell_identityCopy__ZjsDz>strong,.shell_topbar__X56cJ[data-floating=true] .shell_identityStats__zS_ps{transform:none}}