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var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.ring,.ring-1{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.ring-foreground\/10{--tw-ring-color:#1118271a}@supports (color:color-mix(in lab, red, red)){.ring-foreground\/10{--tw-ring-color:color-mix(in oklab, var(--color-foreground) 10%, transparent)}}.outline-hidden{--tw-outline-style:none;outline-style:none}@media (forced-colors:active){.outline-hidden{outline-offset:2px;outline:2px solid #0000}}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.blur{--tw-blur:blur(8px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-\[color\,box-shadow\]{transition-property:color,box-shadow;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-\[…\]{transition-property:…;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-shadow{transition-property:box-shadow;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-none{transition-property:none}.duration-100{--tw-duration:.1s;transition-duration:.1s}.outline-none{--tw-outline-style:none;outline-style:none}.select-none{-webkit-user-select:none;user-select:none}.paused{animation-play-state:paused}.running{animation-play-state:running}.group-has-disabled\/field\:opacity-50:is(:where(.group\/field):has(:disabled) *){opacity:.5}.after\:absolute:after{content:var(--tw-content);position:absolute}.after\:-inset-x-3:after{content:var(--tw-content);inset-inline:calc(var(--spacing) * -3)}.after\:-inset-y-2:after{content:var(--tw-content);inset-block:calc(var(--spacing) * -2)}.focus\:bg-accent:focus{background-color:var(--color-accent)}.focus\:text-accent-foreground:focus,:is(.not-data-\[variant\=destructive\]\:focus\:\*\*\:text-accent-foreground:not([data-variant=destructive]):focus *){color:var(--color-accent-foreground)}.focus-visible\:border-ring:focus-visible{border-color:var(--color-ring)}.focus-visible\:ring-3:focus-visible{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(3px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.focus-visible\:ring-ring\/50:focus-visible{--tw-ring-color:#c0121f80}@supports (color:color-mix(in lab, red, 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8)}:is(.\*\:data-\[slot\=select-value\]\:line-clamp-1>*)[data-slot=select-value]{-webkit-line-clamp:1;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}:is(.\*\:data-\[slot\=select-value\]\:flex>*)[data-slot=select-value]{display:flex}:is(.\*\:data-\[slot\=select-value\]\:items-center>*)[data-slot=select-value]{align-items:center}:is(.\*\:data-\[slot\=select-value\]\:gap-1\.5>*)[data-slot=select-value]{gap:calc(var(--spacing) * 1.5)}@media (prefers-color-scheme:dark){.dark\:bg-input\/30{background-color:#e5e7eb4d}@supports (color:color-mix(in lab, red, red)){.dark\:bg-input\/30{background-color:color-mix(in oklab, var(--color-input) 30%, transparent)}}@media (hover:hover){.dark\:hover\:bg-input\/50:hover{background-color:#e5e7eb80}@supports (color:color-mix(in lab, red, red)){.dark\:hover\:bg-input\/50:hover{background-color:color-mix(in oklab, var(--color-input) 50%, 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var(--tw-animation-duration,var(--tw-duration,.15s))var(--tw-ease,ease)var(--tw-animation-delay,0s)var(--tw-animation-iteration-count,1)var(--tw-animation-direction,normal)var(--tw-animation-fill-mode,none)}.data-open\:fade-in-0:where([data-state=open]),.data-open\:fade-in-0:where([data-open]:not([data-open=false])){--tw-enter-opacity:0}.data-open\:zoom-in-95:where([data-state=open]),.data-open\:zoom-in-95:where([data-open]:not([data-open=false])){--tw-enter-scale:.95}.data-closed\:animate-out:where([data-state=closed]),.data-closed\:animate-out:where([data-closed]:not([data-closed=false])){animation:exit var(--tw-animation-duration,var(--tw-duration,.15s))var(--tw-ease,ease)var(--tw-animation-delay,0s)var(--tw-animation-iteration-count,1)var(--tw-animation-direction,normal)var(--tw-animation-fill-mode,none)}.data-closed\:fade-out-0:where([data-state=closed]),.data-closed\:fade-out-0:where([data-closed]:not([data-closed=false])){--tw-exit-opacity:0}.data-closed\:zoom-out-95:where([data-state=closed]),.data-closed\:zoom-out-95:where([data-closed]:not([data-closed=false])){--tw-exit-scale:.95}.data-checked\:border-primary:where([data-state=checked]),.data-checked\:border-primary:where([data-checked]:not([data-checked=false])){border-color:var(--color-primary)}.data-checked\:bg-primary:where([data-state=checked]),.data-checked\:bg-primary:where([data-checked]:not([data-checked=false])){background-color:var(--color-primary)}.data-checked\:text-primary-foreground:where([data-state=checked]),.data-checked\:text-primary-foreground:where([data-checked]:not([data-checked=false])){color:var(--color-primary-foreground)}@media (prefers-color-scheme:dark){.dark\:data-checked\:bg-primary:where([data-state=checked]),.dark\:data-checked\:bg-primary:where([data-checked]:not([data-checked=false])){background-color:var(--color-primary)}}.data-disabled\:pointer-events-none:where([data-disabled=true]),.data-disabled\:pointer-events-none:where([data-disabled]:not([data-disabled=false])){pointer-events:none}.data-disabled\:opacity-50:where([data-disabled=true]),.data-disabled\:opacity-50:where([data-disabled]:not([data-disabled=false])){opacity:.5}.\[\&_svg\]\:pointer-events-none svg{pointer-events:none}.\[\&_svg\]\:shrink-0 svg{flex-shrink:0}.\[\&_svg\:not\(\[class\*\=\'size-\'\]\)\]\:size-4 svg:not([class*=size-]){width:calc(var(--spacing) * 4);height:calc(var(--spacing) * 4)}:is(.\*\:\[span\]\:last\:flex>*):is(span):last-child{display:flex}:is(.\*\:\[span\]\:last\:items-center>*):is(span):last-child{align-items:center}:is(.\*\:\[span\]\:last\:gap-2>*):is(span):last-child{gap:calc(var(--spacing) * 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--tw-exit-opacity{syntax:"*";inherits:false;initial-value:1}@property --tw-exit-rotate{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-scale{syntax:"*";inherits:false;initial-value:1}@property --tw-exit-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-translate-y{syntax:"*";inherits:false;initial-value:0}@property --scroll-fade-t{syntax:"<length-percentage>";inherits:false;initial-value:0}@property --scroll-fade-b{syntax:"<length-percentage>";inherits:false;initial-value:0}@property --scroll-fade-s{syntax:"<length-percentage>";inherits:false;initial-value:0}@property --scroll-fade-e{syntax:"<length-percentage>";inherits:false;initial-value:0}@property --scroll-fade-mask{syntax:"*";inherits:false}@property --shimmer-angle{syntax:"<angle>";inherits:true;initial-value:20deg}@property --shimmer-image{syntax:"*";inherits:false}@property --shimmer-text-fill{syntax:"*";inherits:false}@media (prefers-reduced-motion:reduce){.shimmer{-webkit-text-fill-color:currentColor;background-image:none;animation:none}}:root{--xe-surface-page:var(--color-surface-page);--xe-surface-card:var(--color-surface-card);--xe-surface-raised:var(--color-surface-raised);--xe-surface-sunken:var(--color-surface-sunken);--xe-surface-inverse:var(--color-surface-inverse);--xe-surface-accent:var(--color-primary);--xe-text-primary:var(--color-ink);--xe-text-secondary:var(--color-foreground-secondary);--xe-text-muted:var(--color-muted-foreground);--xe-text-decorative:var(--color-decorative);--xe-text-inverse:var(--color-inverse);--xe-text-accent:var(--color-accent-text);--xe-text-disabled:var(--color-neutral-400);--xe-text-muted-inverse:var(--color-muted-inverse);--xe-border-subtle:var(--color-subtle);--xe-border-muted:var(--color-neutral-300);--xe-border-strong:var(--color-strong);--xe-border-accent:var(--color-primary);--xe-border-subtle-inverse:var(--color-neutral-700);--xe-fill-hover:var(--xe-surface-sunken)}@supports (color:color-mix(in lab, red, red)){:root{--xe-fill-hover:color-mix(in srgb, var(--xe-surface-sunken) 50%, var(--xe-surface-page))}}:root{--xe-fill-selected:var(--xe-surface-sunken);--xe-fill-control:var(--color-neutral-200);--xe-fill-control-hover:var(--color-neutral-300);--xe-surface-inverse-hover:var(--color-neutral-800);--xe-subject-physics-bg:var(--color-indigo-100);--xe-subject-physics-fg:var(--color-indigo-800);--xe-subject-chemistry-bg:var(--color-teal-100);--xe-subject-chemistry-fg:var(--color-teal-800);--xe-subject-maths-bg:var(--color-purple-100);--xe-subject-maths-fg:var(--color-purple-800);--xe-subject-other-bg:var(--color-neutral-200);--xe-subject-other-fg:var(--color-neutral-700);--xe-accent:var(--color-primary);--xe-accent-hover:var(--color-primary-hover);--xe-accent-inverse:var(--color-accent-inverse);--xe-focus-ring:var(--color-ring);--xe-focus-ring-width:2px;--xe-focus-ring-offset:.125rem;--xe-disabled-opacity:.5;--xe-focus-ring-faint:var(--xe-text-primary)}@supports (color:color-mix(in lab, red, red)){:root{--xe-focus-ring-faint:color-mix(in srgb, var(--xe-text-primary) 14%, transparent)}}:root{--xe-focus-halo:0 0 0 3px var(--xe-focus-ring-faint);--xe-danger-ring-faint:var(--xe-danger-solid)}@supports (color:color-mix(in lab, red, red)){:root{--xe-danger-ring-faint:color-mix(in srgb, var(--xe-danger-solid) 18%, transparent)}}:root{--xe-danger-halo:0 0 0 3px var(--xe-danger-ring-faint);--xe-success-fg:var(--color-success);--xe-success-solid:var(--color-success-solid);--xe-success-border:var(--color-green-200);--xe-success-bg:var(--color-green-50);--xe-success-bg-strong:var(--color-green-100);--xe-warning-fg:var(--color-warning);--xe-warning-solid:var(--color-amber-700);--xe-warning-border:var(--color-amber-200);--xe-warning-bg:var(--color-amber-50);--xe-danger-fg:var(--color-danger);--xe-danger-solid:var(--color-danger-solid);--xe-danger-border:var(--color-red-200);--xe-danger-bg:var(--color-red-50);--xe-danger-fg-inverse:var(--color-red-300);--xe-info-fg:var(--color-info);--xe-info-solid:var(--color-info-solid);--xe-info-border:var(--color-blue-200);--xe-info-bg:var(--color-blue-50);--xe-font-body:var(--font-body);--xe-font-mono:var(--font-mono);--xe-font-features:"ss01", "ss03", "ss05", "ss06", "ss07";--xe-text-3xs:var(--text-3xs);--xe-text-xs:var(--text-xs);--xe-text-base:var(--text-base);--xe-text-md:var(--text-md);--xe-text-lg:var(--text-lg);--xe-text-xl:var(--text-xl);--xe-text-2xl:var(--text-2xl);--xe-text-3xl:var(--text-3xl);--xe-text-4xl:var(--text-4xl);--xe-weight-regular:var(--font-weight-regular);--xe-weight-semibold:var(--font-weight-semibold);--xe-leading-none:var(--leading-none);--xe-leading-tight:var(--leading-tight);--xe-leading-snug:var(--leading-snug);--xe-leading-normal:var(--leading-normal);--xe-leading-relaxed:var(--leading-relaxed);--xe-tracking-tight:var(--tracking-tight);--xe-tracking-normal:var(--tracking-normal);--xe-tracking-wide:var(--tracking-wide);--xe-tracking-wider:var(--tracking-wider);--xe-tracking-widest:var(--tracking-widest);--xe-space-0:0;--xe-space-px:1px;--xe-space-0-5:.125rem;--xe-space-1:.25rem;--xe-space-1-5:.375rem;--xe-space-2:.5rem;--xe-space-2-5:.625rem;--xe-space-3:.75rem;--xe-space-4:1rem;--xe-space-5:1.25rem;--xe-space-6:1.5rem;--xe-space-7:1.75rem;--xe-space-8:2rem;--xe-space-10:2.5rem;--xe-space-12:3rem;--xe-space-16:4rem;--xe-space-20:5rem;--xe-space-24:6rem;--xe-gutter:5vw;--xe-border-hairline:1px;--xe-border-width:1px;--xe-border-thick:2px;--xe-radius-none:var(--radius-none);--xe-radius-sm:var(--radius-sm);--xe-radius-md:var(--radius-md);--xe-radius-lg:var(--radius-lg);--xe-radius-xl:var(--radius-xl);--xe-radius-full:var(--radius-full);--xe-shadow-none:none;--xe-shadow-xs:var(--shadow-xs);--xe-shadow-sm:var(--shadow-sm);--xe-shadow-sm-ink:var(--shadow-md);--xe-shadow-md:var(--shadow-md);--xe-shadow-lg:var(--shadow-lg);--xe-shadow-xl:var(--shadow-xl);--xe-shadow-accent:var(--shadow-accent);--xe-shadow-accent-sm:var(--shadow-accent-sm);--xe-shadow-success-sm:var(--shadow-success-sm);--xe-shadow-warning-sm:var(--shadow-warning-sm);--xe-duration-instant:.1s;--xe-duration-fast:.15s;--xe-duration-base:.18s;--xe-duration-slow:.3s;--xe-duration-slower:.4s;--xe-duration-skeleton:1.4s;--xe-duration-riffle:6s;--xe-ease-standard:var(--ease-standard);--xe-ease-out:var(--ease-out);--xe-transition-colors:color var(--xe-duration-fast) var(--xe-ease-standard), background-color var(--xe-duration-fast) var(--xe-ease-standard), border-color var(--xe-duration-fast) var(--xe-ease-standard);--xe-transition-elevation:box-shadow var(--xe-duration-base) var(--xe-ease-standard), background-color var(--xe-duration-base) var(--xe-ease-standard), border-color var(--xe-duration-base) var(--xe-ease-standard);--xe-z-base:0;--xe-z-raised:10;--xe-z-sticky:100;--xe-z-overlay:500;--xe-z-modal:1000;--xe-z-toast:1500;--xe-container-xs:var(--container-xs);--xe-container-sm:var(--container-sm);--xe-container-md:var(--container-md);--xe-container-lg:var(--container-lg);--xe-container-xl:var(--container-xl);--xe-container-2xl:var(--container-2xl);--xe-shell-sidebar:15rem;--xe-shell-bottom-nav:4rem;--xe-bp-sm:600px;--xe-bp-md:860px;--xe-bp-lg:1024px;--xe-icon-xs:14px;--xe-icon-sm:16px;--xe-icon-md:20px;--xe-icon-lg:24px;--xe-icon-xl:32px;--xe-icon-2xl:48px;--r:var(--xe-accent);--i:var(--xe-text-primary);--p:var(--xe-surface-raised);--b2:var(--xe-info-solid);--m:var(--xe-text-muted);--card:var(--xe-surface-card);--bord:var(--xe-border-subtle);--shadow:var(--xe-shadow-md);--shadow-h:var(--xe-shadow-accent);--dm:var(--xe-font-body)}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-duration{syntax:"*";inherits:false}@property --tw-content{syntax:"*";inherits:false;initial-value:""}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}@keyframes enter{0%{opacity:var(--tw-enter-opacity,1);transform:translate3d(var(--tw-enter-translate-x,0),var(--tw-enter-translate-y,0),0)scale3d(var(--tw-enter-scale,1),var(--tw-enter-scale,1),var(--tw-enter-scale,1))rotate(var(--tw-enter-rotate,0));filter:blur(var(--tw-enter-blur,0))}}@keyframes exit{to{opacity:var(--tw-exit-opacity,1);transform:translate3d(var(--tw-exit-translate-x,0),var(--tw-exit-translate-y,0),0)scale3d(var(--tw-exit-scale,1),var(--tw-exit-scale,1),var(--tw-exit-scale,1))rotate(var(--tw-exit-rotate,0));filter:blur(var(--tw-exit-blur,0))}}@keyframes tw-shimmer{0%{background-position:100% 0}to{background-position:0 0}}.shell{background:var(--xe-surface-page);min-height:100vh}.shell-sidebar{width:var(--xe-shell-sidebar);z-index:var(--xe-z-sticky);gap:var(--xe-space-6);padding:var(--xe-space-5) var(--xe-space-4);flex-direction:column;display:flex;position:fixed;top:0;bottom:0;left:0}.shell-brand{padding-left:var(--xe-space-2)}.shell-brand-link{padding:var(--xe-space-2);margin:calc(var(--xe-space-2) * -1);transition:var(--xe-transition-colors);align-items:center;display:inline-flex}.shell-brand-link:hover{background:var(--xe-fill-hover)}.shell-nav{gap:var(--xe-space-1);flex-direction:column;flex:1;list-style:none;display:flex}.shell-nav-spacer{flex:auto;min-height:0}.shell-nav-item-foot{padding-top:var(--xe-space-3)}.shell-nav-link{align-items:center;gap:var(--xe-space-3);padding:var(--xe-space-3);font-family:var(--xe-font-body);font-size:var(--xe-text-base);font-weight:var(--xe-weight-semibold);color:var(--xe-text-secondary);border:var(--xe-border-width) solid transparent;border-radius:var(--xe-radius-md);transition:var(--xe-transition-colors);text-decoration:none;display:flex}.shell-nav-link:hover{background:var(--xe-fill-hover);color:var(--xe-text-primary)}.shell-nav-link.is-active{background:var(--xe-fill-selected);color:var(--xe-text-primary)}.shell-nav-soon{margin-left:auto;display:inline-flex}.shell-main{margin:var(--xe-space-3) var(--xe-space-3) var(--xe-space-3) calc(var(--xe-shell-sidebar) + var(--xe-space-3));height:calc(100svh - var(--xe-space-6));overscroll-behavior-y:contain;background:var(--xe-surface-card);border:var(--xe-border-thick) solid var(--xe-border-subtle);border-radius:var(--xe-radius-xl);min-width:0;position:relative;overflow:hidden auto}.shell-content{max-width:var(--xe-container-lg);min-width:0;padding:var(--xe-space-8) var(--xe-gutter);margin:0 auto}@media (width<=860px){.shell-sidebar{width:auto;height:calc(var(--xe-shell-bottom-nav) + env(safe-area-inset-bottom,0px));padding:0 0 env(safe-area-inset-bottom,0px);background:var(--xe-surface-card);border-top:var(--xe-border-width) solid var(--xe-border-subtle);flex-direction:row;gap:0;top:auto;right:0}.shell-brand{display:none}.shell-nav{flex-direction:row;gap:0}.shell-nav-item{flex:1}.shell-nav-item-foot{margin-top:0;padding-top:0}.shell-nav-link{justify-content:center;gap:var(--xe-space-1);height:100%;padding:var(--xe-space-1);font-size:var(--xe-text-base);border:none;flex-direction:column;position:relative}.shell-nav-link.is-active{color:var(--xe-text-primary);background:0 0}.shell-nav-link.is-active:before{content:"";width:var(--xe-space-6);height:var(--xe-border-thick);background:var(--xe-accent);border-radius:var(--xe-radius-full);position:absolute;top:0;left:50%;transform:translate(-50%)}.shell-nav-soon,.shell-nav-spacer,.shell-nav-item-desktop{display:none}.shell-main{border-radius:var(--xe-radius-none);height:auto;min-height:100svh;padding-bottom:calc(var(--xe-shell-bottom-nav) + env(safe-area-inset-bottom,0px));border:none;margin:0;overflow:visible}.shell-content{padding:var(--xe-space-6) var(--xe-gutter);position:relative}}.auth-loading{background:var(--xe-surface-raised);min-height:100vh;font-family:var(--xe-font-body);font-size:var(--xe-text-md);color:var(--xe-text-muted);letter-spacing:.02em;justify-content:center;align-items:center;font-weight:600;display:flex}.devov-launch{right:var(--xe-space-4);bottom:calc(var(--xe-space-4) + env(safe-area-inset-bottom,0px));z-index:60;padding:var(--xe-space-2) var(--xe-space-4);border:1px solid var(--xe-border-strong,var(--xe-border));border-radius:var(--xe-radius-full,999px);background:var(--xe-surface);color:var(--xe-text-muted);font:inherit;font-size:var(--xe-text-xs);cursor:pointer;box-shadow:var(--xe-shadow-sm,0 1px 3px #0000001f);position:fixed}.devov-launch:hover{color:var(--xe-text-primary)}.devov{z-index:60;width:min(480px,100vw);padding:calc(var(--xe-space-4) + env(safe-area-inset-top,0px)) var(--xe-space-4) calc(var(--xe-space-4) + env(safe-area-inset-bottom,0px));border-left:1px solid var(--xe-border);background:var(--xe-surface);flex-direction:column;display:flex;position:fixed;top:0;bottom:0;right:0;overflow-y:auto;box-shadow:-4px 0 24px #0000001a}.devov-head{justify-content:space-between;align-items:flex-start;gap:var(--xe-space-3);display:flex}.devov-title{font-family:var(--xe-font-display);font-size:var(--xe-text-lg);font-weight:var(--xe-weight-semibold);color:var(--xe-text-primary)}.devov-sub{margin-top:var(--xe-space-1);font-size:var(--xe-text-sm);color:var(--xe-text-muted)}.devov-scope,.devov-msg{margin-top:var(--xe-space-2);font-size:var(--xe-text-sm);color:var(--xe-text-muted)}.devov-error{margin-top:var(--xe-space-3);padding:var(--xe-space-2) var(--xe-space-3);border:1px solid var(--xe-danger-border);border-radius:var(--xe-radius-md);background:var(--xe-danger-bg);color:var(--xe-danger-fg);font-size:var(--xe-text-sm)}.devov-warn{color:var(--xe-danger-fg)}.devov-body{margin-top:var(--xe-space-4)}.devov-facts{gap:var(--xe-space-3);padding-bottom:var(--xe-space-4);border-bottom:1px solid var(--xe-border);grid-template-columns:repeat(auto-fit,minmax(150px,1fr));display:grid}.devov-facts dt{font-size:var(--xe-text-xs);color:var(--xe-text-muted)}.devov-facts dd{font-size:var(--xe-text-sm);color:var(--xe-text-primary)}.devov-part{border-bottom:1px solid var(--xe-border)}.devov-part-sum{padding:var(--xe-space-3) 0;font-size:var(--xe-text-sm);font-weight:var(--xe-weight-medium);color:var(--xe-text-primary);cursor:pointer}.devov-part-body{padding-bottom:var(--xe-space-4)}.devov-prose{max-height:340px;padding:var(--xe-space-3);border-radius:var(--xe-radius-md);background:var(--xe-surface-sunken,var(--xe-bg));color:var(--xe-text-primary);font-size:var(--xe-text-sm);white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.6;overflow:auto}.devov-answers{gap:var(--xe-space-3);display:grid}.devov-answers dt{margin-bottom:var(--xe-space-1);font-size:var(--xe-text-xs);font-weight:var(--xe-weight-medium);color:var(--xe-text-muted)}.devov-list{gap:var(--xe-space-2);padding-left:var(--xe-space-5);font-size:var(--xe-text-sm);color:var(--xe-text-primary);display:grid}.devov-table{border-collapse:collapse;width:100%;font-size:var(--xe-text-sm);display:block;overflow-x:auto}.devov-table th,.devov-table td{padding:var(--xe-space-1) var(--xe-space-2);border-bottom:1px solid var(--xe-border);text-align:left;vertical-align:top}.devov-table th{color:var(--xe-text-muted);font-weight:var(--xe-weight-medium);white-space:nowrap}.devov-step{max-width:220px}.devov-moved td{background:var(--xe-warning-bg,transparent);font-weight:var(--xe-weight-medium)}@media (width<=520px){.devov{width:100vw}}.admin-loading{background:var(--xe-surface-raised);min-height:100vh;font-family:var(--xe-font-body);font-size:var(--xe-text-md);color:var(--xe-text-muted);letter-spacing:.02em;justify-content:center;align-items:center;font-weight:600;display:flex}.soon-head{margin-bottom:var(--xe-space-7)}.soon-head h1{font-size:var(--xe-text-2xl);font-weight:var(--xe-weight-semibold);margin-bottom:var(--xe-space-1)}.soon-head p{font-size:var(--xe-text-base);font-weight:var(--xe-weight-regular);color:var(--xe-text-muted)}.soon-icon{margin:0 auto var(--xe-space-4);color:var(--xe-text-decorative);display:block}.soon-points{justify-content:center;gap:var(--xe-space-2);margin-top:var(--xe-space-5);flex-wrap:wrap;list-style:none;display:flex}.soon-points li{font-size:var(--xe-text-base);font-weight:var(--xe-weight-regular);color:var(--xe-text-secondary);background:var(--xe-surface-raised);border:var(--xe-border-hairline) solid var(--xe-border-subtle);border-radius:var(--xe-radius-md);padding:var(--xe-space-1-5) var(--xe-space-3)}.history{gap:var(--xe-space-3);flex-direction:column;min-width:0;display:flex}.history-head{font-family:var(--xe-font-body);font-size:var(--xe-text-xl);font-weight:var(--xe-weight-semibold);color:var(--xe-text-primary)}.history-row{cursor:pointer}.history-title{white-space:normal;min-width:11rem}.history-open{width:100%;font:inherit;color:inherit;text-align:left;cursor:pointer;background:0 0;border:none;padding:0;display:block}.history-title-row{align-items:baseline;gap:var(--xe-space-2);min-width:0;display:flex}.history-title-row .history-open{flex:auto;width:auto;min-width:0}.home-greeting{margin-bottom:var(--xe-space-5);justify-content:space-between;align-items:baseline;gap:var(--xe-space-2) var(--xe-space-6);flex-wrap:wrap;display:flex}.home-progress{gap:var(--xe-space-5);font-size:var(--xe-text-base);font-weight:var(--xe-weight-semibold);color:var(--xe-text-primary);display:flex}.home-progress span{align-items:center;gap:var(--xe-space-1-5);display:inline-flex}.home-greeting h1{font-size:var(--xe-text-2xl);font-weight:var(--xe-weight-semibold)}.home-pick{align-items:stretch;gap:var(--xe-space-6);padding:var(--xe-space-3);background:var(--xe-surface-card);border:var(--xe-border-width) solid var(--xe-border-subtle);border-radius:var(--xe-radius-xl);cursor:pointer;transition:var(--xe-transition-elevation);display:flex;position:relative}.home-pick:hover{box-shadow:var(--xe-shadow-md)}.home-pick-cover{justify-content:center;align-items:center;gap:var(--xe-space-2);padding:var(--xe-space-6) var(--xe-space-4);border-radius:var(--xe-radius-lg);background:var(--xe-subject-other-bg);color:var(--xe-subject-other-fg);font-size:var(--xe-text-base);font-weight:var(--xe-weight-semibold);flex-direction:column;flex:0 0 11rem;display:flex}.home-pick-cover.is-physics{background:var(--xe-subject-physics-bg);color:var(--xe-subject-physics-fg)}.home-pick-cover.is-chemistry{background:var(--xe-subject-chemistry-bg);color:var(--xe-subject-chemistry-fg)}.home-pick-cover.is-maths{background:var(--xe-subject-maths-bg);color:var(--xe-subject-maths-fg)}.home-pick-body{min-width:0;padding:var(--xe-space-3) var(--xe-space-3) var(--xe-space-3) 0;flex-direction:column;flex:auto;display:flex}.home-pick-lead{font-size:var(--xe-text-base);color:var(--xe-text-muted);margin-bottom:var(--xe-space-2)}.home-pick-title{align-items:center;gap:var(--xe-space-2) var(--xe-space-3);font-size:var(--xe-text-2xl);font-weight:var(--xe-weight-semibold);line-height:var(--xe-leading-tight);flex-wrap:wrap;display:flex}.home-pick-where{margin-top:var(--xe-space-1);font-size:var(--xe-text-base);color:var(--xe-text-secondary)}.home-pick-foot{justify-content:space-between;align-items:flex-end;gap:var(--xe-space-4) var(--xe-space-8);padding-top:var(--xe-space-6);flex-wrap:wrap;margin-top:auto;display:flex}.home-pick-facts{gap:var(--xe-space-3) var(--xe-space-8);flex-wrap:wrap;display:flex}.home-pick-facts>div{gap:var(--xe-space-0-5);flex-direction:column-reverse;display:flex}.home-pick-facts dt{font-size:var(--xe-text-base);color:var(--xe-text-muted)}.home-pick-facts dd{font-size:var(--xe-text-lg);font-weight:var(--xe-weight-semibold);font-variant-numeric:tabular-nums;line-height:var(--xe-leading-tight)}.home-pick-cta{min-width:11rem}.home-pick-actions{gap:var(--xe-space-3);flex-wrap:wrap;display:flex}.home-pick-share{top:var(--xe-space-3);right:var(--xe-space-3);z-index:1;position:absolute}.home-pick-skeleton{height:calc(var(--xe-space-24) * 2);border-radius:var(--xe-radius-xl)}@media (width<=600px){.home-pick{gap:var(--xe-space-4);flex-direction:column}.home-pick-cover{justify-content:flex-start;gap:var(--xe-space-3);padding:var(--xe-space-3) var(--xe-space-4);flex-direction:row;flex:none}.home-pick-body{padding:0 var(--xe-space-2) var(--xe-space-2)}.home-pick-foot{padding-top:var(--xe-space-5)}.home-pick-actions{flex-direction:column-reverse;width:100%}.home-pick-cta{width:100%}}.home-msg{font-size:var(--xe-text-base);font-weight:var(--xe-weight-regular);color:var(--xe-text-muted);padding:var(--xe-space-4) 0}.home-err{font-size:var(--xe-text-base);color:var(--xe-danger-fg);margin-top:var(--xe-space-3)}.home-more{margin-top:var(--xe-space-8)}.home-feedback{justify-content:space-between;align-items:center;gap:var(--xe-space-4);margin-bottom:var(--xe-space-6);padding:var(--xe-space-4) var(--xe-space-5);background:color-mix(in srgb, var(--xe-surface-sunken) 55%, var(--xe-surface-page));border-radius:var(--xe-radius-lg);font-size:var(--xe-text-base);color:var(--xe-text-primary);flex-wrap:wrap;display:flex}.home-feedback-icon{color:var(--xe-text-muted);flex-shrink:0}.home-feedback .xe-btn{background:var(--xe-surface-card);border-color:var(--xe-border-strong,var(--xe-text-muted))}.home-feedback .xe-btn:hover:not(:disabled){background:var(--xe-surface-raised);border-color:var(--xe-border-strong,var(--xe-text-muted))}.home-feedback-text{align-items:center;gap:var(--xe-space-3);flex:1;min-width:0;display:flex}.home-feedback-text p{min-width:0}@media (width<=600px){.home-feedback{align-items:stretch;gap:var(--xe-space-3);padding:var(--xe-space-4);flex-direction:column}.home-feedback-cta{width:100%}}.home-history{margin-top:var(--xe-space-8);align-self:stretch}.home-revisit{align-items:center;gap:var(--xe-space-4);margin-top:var(--xe-space-5);padding:var(--xe-space-5);background:var(--xe-surface-card);border:var(--xe-border-width) solid var(--xe-border-subtle);border-radius:var(--xe-radius-lg);color:var(--xe-text-primary);transition:var(--xe-transition-elevation);grid-template-columns:auto minmax(0,1fr) auto;text-decoration:none;display:grid}.home-revisit:hover{box-shadow:var(--xe-shadow-md)}.home-revisit-text{gap:var(--xe-space-1);flex-direction:column;min-width:0;display:flex}.home-revisit-name{font-size:var(--xe-text-lg);font-weight:var(--xe-weight-semibold);line-height:var(--xe-leading-tight)}.home-revisit-meta{font-size:var(--xe-text-base);color:var(--xe-text-muted)}.home-revisit-caret{color:var(--xe-text-decorative);flex-shrink:0}@media (width<=600px){.home-revisit{gap:var(--xe-space-3);padding:var(--xe-space-4)}}.login-screen{background:var(--xe-surface-raised);flex-direction:column;min-height:100vh;display:flex}.login-wrap{width:90%;max-width:440px;padding:var(--xe-space-12) 0;flex-direction:column;align-items:center;margin:auto;display:flex}.login-logo{margin-bottom:var(--xe-space-1-5)}.login-tagline{font-size:var(--xe-text-md);font-weight:var(--xe-weight-semibold);color:var(--xe-text-muted);margin-bottom:var(--xe-space-10);letter-spacing:var(--xe-tracking-tight)}.login-card{background:var(--xe-surface-card);border:var(--xe-border-width) solid var(--xe-border-subtle);border-radius:var(--xe-radius-xl);box-shadow:var(--xe-shadow-lg);padding:var(--xe-space-8);width:100%;position:relative}.login-early{top:var(--xe-space-4);right:var(--xe-space-4);position:absolute}.login-card h2{font-family:var(--xe-font-body);font-size:var(--xe-text-xl);font-weight:var(--xe-weight-semibold);margin-bottom:var(--xe-space-6)}.google-btn{align-items:center;gap:var(--xe-space-3);width:100%;padding:var(--xe-space-3) var(--xe-space-5);border:var(--xe-border-width) solid var(--xe-border-strong);border-radius:var(--xe-radius-md);background:var(--xe-surface-card);cursor:pointer;transition:var(--xe-transition-colors);font-family:var(--xe-font-body);font-size:var(--xe-text-base);font-weight:var(--xe-weight-regular);color:var(--xe-text-primary);margin-bottom:var(--xe-space-1-5);justify-content:center;display:flex}.google-btn:hover:not(:disabled){background:var(--xe-surface-raised);border-color:var(--xe-border-muted)}.google-btn:disabled{opacity:var(--xe-disabled-opacity)}.or-divider{align-items:center;gap:var(--xe-space-3);margin-bottom:var(--xe-space-4);display:flex}.or-divider:before,.or-divider:after{content:"";background:var(--xe-border-subtle);flex:1;height:1px}.or-divider span{font-size:var(--xe-text-xs);color:var(--xe-text-muted);letter-spacing:var(--xe-tracking-normal);white-space:nowrap;font-weight:600}.login-field{margin-bottom:var(--xe-space-3);text-align:left}.login-switch{font-size:var(--xe-text-base);color:var(--xe-text-muted);text-align:center;margin-top:var(--xe-space-5)}.auth-error{background:var(--xe-danger-bg);border-radius:var(--xe-radius-md);color:var(--xe-text-primary);padding:var(--xe-space-3);font-size:var(--xe-text-base);font-weight:var(--xe-weight-regular);line-height:var(--xe-leading-snug);margin-bottom:var(--xe-space-3)}