*{box-sizing:border-box}:root{--pr-font-sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Hiragino Sans GB","Helvetica Neue",Inter,"Noto Sans SC",system-ui,sans-serif;--pr-font-display:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Hiragino Sans GB","Helvetica Neue",Inter,"Noto Sans SC",system-ui,sans-serif;--pr-font-mono:ui-monospace,"SF Mono",Menlo,"JetBrains Mono",monospace;--shell-sidebar-w:240px;--shell-topbar-h:64px;--shell-content-w:1120px;--sidebar-bg:var(--surface);--sidebar-ink:var(--ink-muted);--sidebar-ink-strong:var(--brand-900);--sidebar-line:var(--hairline)}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--pr-font-sans);-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit}a,button{color:inherit}a{text-decoration:none}h1,h2,h3{margin:0;font-family:var(--pr-font-display);line-height:1.2}p{margin:0}@media (prefers-reduced-motion:reduce){*,:after,:before{transition-duration:.01ms!important;animation-duration:.01ms!important}}.shell-gate{min-height:100vh;display:grid;place-content:center;justify-items:center;grid-gap:12px;gap:12px;padding:24px;color:var(--ink);text-align:center}.shell-gate--inline{min-height:60vh}.shell-gate strong{font-size:14px}.shell-gate p{max-width:360px;color:var(--ink-muted);font-size:13px;line-height:1.6}.shell-gate__pulse{width:44px;height:4px;margin:20px 0 4px;overflow:hidden;border-radius:999px;background:var(--hairline)}.shell-gate__pulse:after{content:"";display:block;width:55%;height:100%;border-radius:inherit;background:var(--brand-600);animation:shell-gate-pulse .9s ease-in-out infinite alternate}@keyframes shell-gate-pulse{0%{transform:translateX(-80%)}to{transform:translateX(160%)}}.shell,.shell__main{min-height:100vh}.shell__main{margin-left:var(--shell-sidebar-w);display:flex;flex-direction:column}.shell__content{width:min(100% - 64px,var(--shell-content-w));margin:0 auto;padding:28px 0 56px}.shell-icon-button{position:relative;width:38px;height:38px;display:inline-grid;place-items:center;border:1px solid var(--hairline);border-radius:12px;background:var(--surface);color:var(--ink-muted);cursor:pointer;transition:color var(--dur-fast) ease-out,border-color var(--dur-fast) ease-out,transform var(--dur-med) var(--ease-spring),box-shadow var(--dur-med) var(--ease-out)}.shell-icon-button:hover{color:var(--brand-600);border-color:var(--brand-400);transform:translateY(-1px);box-shadow:var(--shadow-2)}.shell-icon-button:active{transform:scale(.94)}.shell-icon-button:focus-visible{outline:none;box-shadow:var(--focus)}.sidebar{position:fixed;z-index:30;inset:0 auto 0 0;width:var(--shell-sidebar-w);display:flex;flex-direction:column;gap:8px;padding:22px 14px 16px;color:var(--sidebar-ink);background:linear-gradient(180deg,var(--surface) 0,color-mix(in srgb,var(--brand-50) 55%,var(--surface)) 62%,color-mix(in srgb,var(--sky-50) 70%,var(--surface)) 100%);border-right:1px solid var(--hairline);isolation:isolate}.sidebar:after{content:"";position:absolute;z-index:-1;inset:auto 0 0;height:38%;pointer-events:none;background:url(/_next/static/media/prism-facets.575fa382.svg) 0 0/48px auto repeat;opacity:.22;-webkit-mask-image:linear-gradient(0deg,#000,transparent);mask-image:linear-gradient(0deg,#000,transparent)}.sidebar__brand{display:flex;align-items:center;justify-content:space-between;padding:0 8px 18px}.sidebar__logo{display:inline-flex;border-radius:8px}.sidebar__account:focus-visible,.sidebar__item:focus-visible,.sidebar__logo:focus-visible,.sidebar__logout:focus-visible{outline:none;box-shadow:var(--focus)}.sidebar__close{display:none;background:transparent;border-color:var(--sidebar-line);color:var(--sidebar-ink)}.sidebar__nav{display:grid;grid-gap:4px;gap:4px}.sidebar__item{position:relative;display:flex;align-items:center;gap:12px;min-height:42px;padding:0 12px;border-radius:12px;font-size:14px;font-weight:500;color:var(--sidebar-ink);transition:background-color var(--dur-fast) ease-out,color var(--dur-fast) ease-out,transform var(--dur-med) var(--ease-out)}.sidebar__item svg{transition:transform var(--dur-med) var(--ease-spring)}.sidebar__item small{margin-left:auto;font-size:11px;color:var(--ink-muted)}.sidebar__item:hover{color:var(--sidebar-ink-strong);background:color-mix(in srgb,var(--brand-50) 80%,transparent);transform:translateX(2px)}.sidebar__item:hover svg{transform:scale(1.12) rotate(-4deg)}.sidebar__item.is-active{color:var(--sidebar-ink-strong);font-weight:650;background:linear-gradient(100deg,var(--brand-50),var(--sky-50));box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--brand-400) 35%,transparent)}.sidebar__item.is-active svg{color:var(--brand-600)}.sidebar__item.is-active:before{content:"";position:absolute;left:-14px;top:10px;bottom:10px;width:4px;border-radius:0 4px 4px 0;background:linear-gradient(var(--brand-500),var(--sky-400))}.sidebar__item.is-planned{opacity:.7}.sidebar__item--muted{font-weight:450}.sidebar__bottom{margin-top:auto;display:grid;grid-gap:6px;gap:6px;padding-top:12px;border-top:1px solid var(--sidebar-line)}.sidebar__account{display:grid;grid-template-columns:auto 1fr auto;align-items:center;grid-gap:10px;gap:10px;padding:8px 10px;border-radius:14px;color:var(--ink);background:color-mix(in srgb,var(--surface) 70%,transparent);border:1px solid var(--hairline);transition:background-color var(--dur-fast) ease-out,box-shadow var(--dur-med) var(--ease-out)}.sidebar__account.is-active,.sidebar__account:hover{background:var(--surface);box-shadow:var(--shadow-2)}.sidebar__account span{display:grid;min-width:0}.sidebar__account strong{overflow:hidden;font-size:13px;white-space:nowrap;text-overflow:ellipsis}.sidebar__account small{font-size:11px;color:var(--ink-muted)}.sidebar__logout{display:flex;align-items:center;gap:10px;min-height:38px;padding:0 12px;border:0;border-radius:10px;background:transparent;color:var(--ink-muted);font-size:13px;cursor:pointer}.sidebar__logout:hover{color:var(--brand-900);background:color-mix(in srgb,var(--brand-50) 80%,transparent)}.sidebar-scrim{display:none}.topbar{position:-webkit-sticky;position:sticky;top:0;z-index:20;display:grid;grid-template-columns:auto 1fr auto;align-items:center;grid-gap:16px;gap:16px;height:var(--shell-topbar-h);padding:0 32px;border-bottom:1px solid var(--hairline);background:color-mix(in srgb,var(--paper) 88%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.topbar__menu{display:none}.topbar__context{display:grid;min-width:0}.topbar__context small{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-muted)}.topbar__context strong{font-size:15px}.topbar__brand{display:none}.topbar__actions{display:flex;align-items:center;gap:8px}.topbar__avatar{display:inline-flex;border-radius:999px}.topbar__avatar:focus-visible{outline:none;box-shadow:var(--focus)}.dash{display:grid;grid-gap:22px;gap:22px}.home>*{animation:home-rise var(--dur-slow) var(--ease-out) both;animation-delay:calc(var(--i, 0) * 70ms)}@keyframes home-rise{0%{opacity:0;transform:translateY(14px) scale(.99)}}.dash__eyebrow{margin:0 0 6px;color:var(--brand-600);font:700 11px/1.2 var(--pr-font-sans);letter-spacing:.08em;text-transform:uppercase}.dash__lede{margin-top:8px;color:var(--ink-muted);font-size:15px;line-height:1.6}.home-hero{position:relative;isolation:isolate;overflow:hidden;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;grid-gap:28px;gap:28px;padding:30px 32px;border:1px solid color-mix(in srgb,var(--brand-400) 30%,var(--hairline));border-radius:var(--radius-xl);background:linear-gradient(125deg,var(--brand-50) 0,color-mix(in srgb,var(--surface) 70%,var(--brand-50)) 48%,var(--sky-50) 100%);box-shadow:var(--shadow-2)}.home-hero__blob{position:absolute;z-index:-1;border-radius:50%;filter:blur(40px);opacity:.6;pointer-events:none}.home-hero__blob--violet{width:280px;height:280px;top:-120px;left:30%;background:color-mix(in srgb,var(--brand-400) 45%,transparent);animation:home-drift 14s ease-in-out infinite alternate}.home-hero__blob--sky{width:320px;height:320px;right:-90px;bottom:-160px;background:color-mix(in srgb,var(--sky-400) 42%,transparent);animation:home-drift 17s ease-in-out infinite alternate-reverse}@keyframes home-drift{to{transform:translate(-40px,30px) scale(1.12)}}.home-hero__main{min-width:0}.home-hero h1{color:var(--brand-900);font-size:clamp(28px,3.2vw,38px);font-weight:700;letter-spacing:-.03em}.home-focus{margin-top:22px;padding:18px 20px;border:1px solid color-mix(in srgb,var(--surface) 60%,var(--hairline));border-radius:var(--radius-lg);background:color-mix(in srgb,var(--surface) 78%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.home-focus__eyebrow{display:inline-flex;align-items:center;gap:6px;margin-bottom:8px;padding:4px 10px;border-radius:999px;background:var(--apricot-50);color:var(--apricot-text);font-size:12px;font-weight:650}.home-focus h2{font-size:21px;font-weight:700;letter-spacing:-.02em}.home-focus>p:not(.home-focus__eyebrow){margin-top:6px;color:var(--ink-muted);font-size:14px;line-height:1.6}.home-focus__actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.home-focus__actions a:focus-visible{outline:none;box-shadow:var(--focus)}.home-cta__arrow{transition:transform var(--dur-med) var(--ease-spring)}.home-cta:hover .home-cta__arrow{transform:translateX(4px)}.home-streak{width:230px;display:grid;justify-items:center;grid-gap:6px;gap:6px;padding:20px 18px 16px;border-radius:var(--radius-lg);background:color-mix(in srgb,var(--surface) 82%,transparent);border:1px solid color-mix(in srgb,var(--apricot-400) 30%,var(--hairline));text-align:center;transition:transform var(--dur-med) var(--ease-out),box-shadow var(--dur-med) var(--ease-out)}.home-streak:hover{transform:translateY(-3px) rotate(-.6deg);box-shadow:var(--shadow-3)}.home-streak:focus-visible{outline:none;box-shadow:var(--focus)}.home-streak .ring__content{display:grid;justify-items:center;grid-gap:0;gap:0}.home-streak .ring__content strong{color:var(--ink);font:700 30px/1 var(--pr-font-mono)}.home-streak .ring__content strong small{margin-left:3px;color:var(--ink-muted);font:600 12px/1 var(--pr-font-sans)}.home-streak__flame{color:var(--pending)}.home-streak__flame.is-lit{color:var(--apricot-400);transform-origin:50% 90%;animation:home-flicker 2.4s ease-in-out infinite}@keyframes home-flicker{0%,to{transform:scale(1) rotate(0deg)}35%{transform:scale(1.08,1.14) rotate(-3deg)}70%{transform:scale(.97,1.04) rotate(2deg)}}.home-streak__status{margin-top:6px;color:var(--ink);font-size:14px;font-weight:650}.home-streak__goal{color:var(--apricot-text);font-size:12px;font-weight:600}.home-streak__meta{display:grid;justify-items:center;grid-gap:6px;gap:6px;margin-top:4px;color:var(--ink-muted);font-size:11px}.home-streak__chip{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:999px;background:var(--sky-50);color:var(--sky-600);font-weight:600}.ring{position:relative;display:inline-grid;place-items:center;flex:none}.ring>svg{position:absolute;inset:0}.ring__track{stroke:color-mix(in srgb,var(--hairline) 80%,transparent)}.ring__value{stroke:var(--brand-500);transition:stroke-dashoffset 1.1s var(--ease-out)}.ring--sky .ring__value{stroke:var(--sky-400)}.ring--apricot .ring__value{stroke:var(--apricot-400)}.ring__content{position:relative}.dash__attention{display:grid;grid-gap:10px;gap:10px}.dash__attention-item{display:grid;grid-template-columns:auto 1fr auto;align-items:center;grid-gap:14px;gap:14px;padding:14px 18px;border:1px solid color-mix(in srgb,var(--apricot-400) 35%,var(--hairline));border-radius:var(--radius-lg);background:linear-gradient(90deg,var(--apricot-50),var(--surface))}.dash__attention-item>svg{color:var(--apricot-text)}.dash__attention-item strong{display:block;font-size:14px}.dash__attention-item p{margin-top:2px;color:var(--ink-muted);font-size:13px;line-height:1.5}.home-quick{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:12px;gap:12px}.home-quick__tile{--tone:var(--brand-500);--tone-soft:var(--brand-50);--tone-ink:var(--brand-900);position:relative;overflow:hidden;display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;grid-gap:12px;gap:12px;min-height:84px;padding:16px;border:1px solid var(--hairline);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-1);transition:transform var(--dur-med) var(--ease-out),box-shadow var(--dur-med) var(--ease-out),border-color var(--dur-fast) ease-out}.home-quick__tile[data-tone=sky]{--tone:var(--sky-400);--tone-soft:var(--sky-50);--tone-ink:var(--sky-600)}.home-quick__tile[data-tone=apricot]{--tone:var(--apricot-400);--tone-soft:var(--apricot-50);--tone-ink:var(--apricot-text)}.home-quick__tile[data-tone=teal]{--tone:var(--brand-600);--tone-soft:color-mix(in srgb,var(--brand-50) 60%,var(--sky-50));--tone-ink:var(--brand-600)}.home-quick__tile:before{content:"";position:absolute;z-index:0;inset:auto -40% -60% auto;width:160px;height:160px;border-radius:50%;background:var(--tone-soft);transform:scale(.2);opacity:0;transition:transform var(--dur-slow) var(--ease-out),opacity var(--dur-med) ease-out}.home-quick__tile>*{position:relative;z-index:1}.home-quick__tile:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--tone) 45%,var(--hairline));box-shadow:var(--shadow-3)}.home-quick__tile:hover:before{transform:scale(1.6);opacity:1}.home-quick__tile:active{transform:translateY(-1px) scale(.98)}.home-quick__tile:focus-visible{outline:none;box-shadow:var(--focus)}.home-quick__icon{width:46px;height:46px;display:grid;place-items:center;border-radius:15px;background:var(--tone-soft);color:var(--tone-ink);transition:transform var(--dur-med) var(--ease-spring)}.home-quick__tile:hover .home-quick__icon{transform:rotate(-8deg) scale(1.1)}.home-quick__copy{min-width:0;display:grid;grid-gap:3px;gap:3px}.home-quick__copy strong{font-size:15px}.home-quick__copy small{overflow:hidden;color:var(--ink-muted);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.home-quick__badge{position:absolute;top:10px;right:12px;min-width:22px;height:22px;display:grid;place-items:center;padding:0 6px;border-radius:999px;background:var(--sky-600);color:#fff;font:700 11px/1 var(--pr-font-mono);animation:home-pop .6s var(--ease-spring) .5s both}@keyframes home-pop{0%{transform:scale(0)}}.home-quick__arrow{position:absolute;right:12px;bottom:12px;color:var(--tone-ink);opacity:0;transform:translate(-4px,4px);transition:opacity var(--dur-fast) ease-out,transform var(--dur-med) var(--ease-out)}.home-quick__tile:hover .home-quick__arrow{opacity:1;transform:none}.dash__stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:12px;gap:12px;margin:0}.dash__stat{--tone:var(--brand-500);--tone-soft:var(--brand-50);--tone-ink:var(--brand-600);display:grid;grid-gap:10px;gap:10px;padding:16px 18px;border:1px solid var(--hairline);border-radius:var(--radius-lg);background:var(--surface);transition:transform var(--dur-med) var(--ease-out),box-shadow var(--dur-med) var(--ease-out)}.dash__stat[data-tone=sky]{--tone:var(--sky-400);--tone-soft:var(--sky-50);--tone-ink:var(--sky-600)}.dash__stat[data-tone=apricot]{--tone:var(--apricot-400);--tone-soft:var(--apricot-50);--tone-ink:var(--apricot-text)}.dash__stat:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}.dash__stat dt{display:flex;align-items:center;gap:8px;color:var(--ink-muted);font-size:12px;font-weight:600}.dash__stat-icon{width:28px;height:28px;display:grid;place-items:center;border-radius:9px;background:var(--tone-soft);color:var(--tone-ink)}.dash__stat dd{margin:0}.dash__stat dd a{display:inline-block;color:var(--ink);font:700 26px/1.1 var(--pr-font-mono);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;border-radius:6px;transition:color var(--dur-fast) ease-out}.dash__stat dd a:hover{color:var(--tone-ink)}.dash__stat dd a:focus-visible{outline:none;box-shadow:var(--focus)}.dash__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px}.dash__panel,.dash__section{display:grid;align-content:start;grid-gap:14px;gap:14px;padding:22px;border:1px solid var(--hairline);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-1);transition:box-shadow var(--dur-med) var(--ease-out)}.dash__panel:hover{box-shadow:var(--shadow-2)}.dash__panel-head,.dash__section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px}.dash__panel-head h2,.dash__section-head h2{font-size:19px;font-weight:700;letter-spacing:-.02em}.dash__more{display:inline-flex;align-items:center;gap:4px;flex:none;padding:6px 10px;border-radius:999px;color:var(--brand-600);font-size:13px;font-weight:600;transition:background-color var(--dur-fast) ease-out,gap var(--dur-med) var(--ease-out)}.dash__more:hover{gap:8px;background:var(--brand-50)}.dash__more:focus-visible{outline:none;box-shadow:var(--focus)}.dash__list{display:grid;margin:0;padding:0;list-style:none}.dash__row{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;align-items:center;grid-gap:12px;gap:12px;padding:11px 8px;border-top:1px solid var(--hairline);border-radius:var(--radius-md);transition:background-color var(--dur-fast) ease-out}.dash__row:first-child{border-top:0}.dash__row:hover{background:color-mix(in srgb,var(--brand-50) 55%,transparent)}.dash__row>div{min-width:0;display:grid;grid-gap:2px;gap:2px}.dash__row strong{overflow:hidden;font-size:14px;text-overflow:ellipsis;white-space:nowrap}.dash__row small{color:var(--ink-muted);font-size:12px}.dash__row>a{width:32px;height:32px;display:grid;place-items:center;border-radius:10px;color:var(--ink-muted);transition:color var(--dur-fast) ease-out,background-color var(--dur-fast) ease-out,transform var(--dur-med) var(--ease-spring)}.dash__row>a:hover{color:var(--brand-600);background:var(--brand-50);transform:translateX(3px)}.dash__row>a:focus-visible{outline:none;box-shadow:var(--focus)}.dash__row-icon{width:34px;height:34px;display:grid;place-items:center;border-radius:11px;background:linear-gradient(135deg,var(--brand-50),var(--sky-50));color:var(--brand-600)}.dash__row-mastery{min-width:48px;font-size:14px;color:var(--partial)}.dash__row-mastery,.dash__score{font-family:var(--pr-font-mono);font-weight:700}.dash__score{font-size:13px}.dash__score.is-correct{color:var(--correct)}.dash__score.is-partial{color:var(--partial)}.dash__score.is-incorrect{color:var(--incorrect)}.dash__score.is-pending{color:var(--brand-600)}.dash__score.is-muted{color:var(--pending)}.home-bars{height:132px;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);grid-gap:10px;gap:10px;margin:0;padding:12px 14px 0;border-radius:var(--radius-md);background:linear-gradient(180deg,transparent,var(--brand-50))}.home-bars,.home-bars__bar{display:grid;align-items:end}.home-bars__bar{height:100%;grid-template-rows:auto 1fr auto;justify-items:center;grid-gap:4px;gap:4px}.home-bars__bar b{color:var(--ink-muted);font:700 11px/1 var(--pr-font-mono)}.home-bars__bar i{width:min(28px,100%);height:var(--h);border-radius:8px 8px 3px 3px;background:linear-gradient(180deg,var(--brand-400),var(--brand-500));transform-origin:bottom;animation:home-grow .8s var(--ease-out) both;animation-delay:calc(.3s + var(--j, 0) * 80ms)}.home-bars__bar.is-partial i{background:linear-gradient(180deg,var(--sky-400),color-mix(in srgb,var(--sky-400) 70%,var(--brand-500)))}.home-bars__bar.is-incorrect i{background:linear-gradient(180deg,#ffc2d6,var(--apricot-400))}.home-bars__bar small{padding-bottom:6px;color:var(--ink-muted);font-size:10px}@keyframes home-grow{0%{transform:scaleY(0)}}.dash__empty{display:grid;grid-template-columns:auto 1fr auto;align-items:center;grid-gap:14px;gap:14px;padding:14px 16px;border:1px dashed color-mix(in srgb,var(--brand-400) 45%,var(--hairline));border-radius:var(--radius-lg);background:color-mix(in srgb,var(--brand-50) 40%,transparent);color:var(--ink-muted)}.dash__empty-art{width:96px;height:72px;animation:home-bob 5s ease-in-out infinite alternate}@keyframes home-bob{to{transform:translateY(-4px)}}@media (max-width:640px){.dash__empty{grid-template-columns:1fr;justify-items:start}}.dash__empty strong{display:block;color:var(--ink);font-size:14px}.dash__empty p{margin-top:2px;font-size:13px;line-height:1.5}.dash__courses{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));grid-gap:14px;gap:14px}.dash__course{--glyph-tone:var(--brand-600);position:relative;overflow:hidden;display:grid;grid-gap:12px;gap:12px;padding:18px;border:1px solid var(--hairline);border-radius:var(--radius-lg);background:linear-gradient(160deg,color-mix(in srgb,var(--glyph-tone) 8%,var(--surface)) 0,var(--surface) 60%);animation:home-rise var(--dur-slow) var(--ease-out) both;animation-delay:calc(.35s + var(--j, 0) * 90ms);transition:transform var(--dur-med) var(--ease-out),box-shadow var(--dur-med) var(--ease-out),border-color var(--dur-fast) ease-out}.dash__course[data-system=alevel]{--glyph-tone:var(--sys-alevel)}.dash__course[data-system=ib]{--glyph-tone:var(--sys-ib)}.dash__course[data-system=ap]{--glyph-tone:var(--sys-ap)}.dash__course[data-system=igcse]{--glyph-tone:var(--sys-igcse)}.dash__course:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--glyph-tone) 35%,var(--hairline));box-shadow:var(--shadow-3)}.dash__course-top{display:flex;align-items:center;justify-content:space-between}.dash__course-glyph{width:44px;height:44px;display:grid;place-items:center;border-radius:14px;color:var(--glyph-tone);background:color-mix(in srgb,var(--glyph-tone) 12%,var(--surface));transition:transform var(--dur-med) var(--ease-spring)}.dash__course:hover .dash__course-glyph{transform:rotate(-8deg) scale(1.08)}.dash__course-meter .ring__value{stroke:var(--glyph-tone)}.dash__course-meter strong{color:var(--ink);font:700 13px/1 var(--pr-font-mono)}.dash__course header{display:grid;justify-items:start;grid-gap:6px;gap:6px}.dash__course h3{font-size:18px;font-weight:700}.dash__course header small,.dash__course-caption{color:var(--ink-muted);font-size:12px}.dash__course-action{justify-self:start;display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;background:var(--brand-50);color:var(--brand-600);font-size:13px;font-weight:650;transition:background-color var(--dur-fast) ease-out,color var(--dur-fast) ease-out,gap var(--dur-med) var(--ease-out)}.dash__course-action:hover{gap:10px;background:var(--brand-600);color:var(--on-brand)}.dash__course-action:focus-visible{outline:none;box-shadow:var(--focus)}.dash__panel--tutor{grid-template-columns:auto 1fr;align-items:center;gap:16px;background:linear-gradient(135deg,var(--sky-50),var(--brand-50))}.dash__tutor-art{width:132px;height:auto;animation:home-bob 4.5s ease-in-out infinite alternate}.dash__panel--tutor h2{font-size:19px;font-weight:700}.dash__panel--tutor>div>p{margin-top:6px;color:var(--ink-muted);font-size:14px;line-height:1.6}.dash__tutor-foot{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:12px}@media (max-width:1023px){.dash__stats,.home-quick{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:767px){.home-hero{grid-template-columns:1fr;padding:22px 18px;border-radius:var(--radius-lg)}.home-streak{width:100%;grid-template-columns:auto 1fr;justify-items:start;text-align:left;column-gap:16px}.home-streak .ring{grid-row:span 4}.home-streak__meta{justify-items:start}.dash__grid,.dash__panel--tutor{grid-template-columns:1fr}.dash__tutor-art{width:110px}}@media (max-width:639px){.home-quick{gap:10px}.home-quick__tile{grid-template-columns:1fr;min-height:118px;align-content:start}.home-focus__actions .pr-button{width:100%}}.account{display:grid;grid-template-columns:200px minmax(0,1fr);grid-gap:28px;gap:28px;align-items:start}.account__nav{position:-webkit-sticky;position:sticky;top:calc(var(--shell-topbar-h) + 28px);display:grid;grid-gap:4px;gap:4px}.account__nav a{padding:10px 12px;border-radius:10px;color:var(--ink-muted);font-size:14px;font-weight:500}.account__nav a:hover{color:var(--ink);background:var(--surface)}.account__nav a.is-active{color:var(--brand-600);background:var(--brand-50);font-weight:650}.account__nav a:focus-visible{outline:none;box-shadow:var(--focus)}.account__body{display:grid;grid-gap:20px;gap:20px}.account__section{display:grid;grid-gap:18px;gap:18px;padding:24px;border:1px solid var(--hairline);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-1)}.account__section--flush{padding:0;border:0;background:transparent;box-shadow:none}.account__head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.account__head h2{font-size:20px;font-weight:650}.account__head p{margin-top:6px;color:var(--ink-muted);font-size:14px;line-height:1.6}.account__form{max-width:520px}.account__field-group,.account__form{display:grid;grid-gap:16px;gap:16px}.account__meta{margin:0;display:grid;grid-gap:10px;gap:10px;padding:14px 16px;border-radius:var(--radius-md);background:var(--paper)}.account__meta div{display:grid;grid-template-columns:110px 1fr;grid-gap:12px;gap:12px;font-size:13px}.account__meta dt{color:var(--ink-muted)}.account__meta dd{margin:0}.account__message{padding:10px 12px;border-radius:var(--radius-sm);background:color-mix(in srgb,var(--correct) 10%,var(--surface));color:var(--correct);font-size:13px}.account__message.is-error{background:color-mix(in srgb,var(--incorrect) 10%,var(--surface));color:var(--incorrect)}.account__actions{display:flex;justify-content:flex-end}.account__form-head{display:grid;grid-template-columns:auto 1fr;grid-gap:14px;gap:14px;align-items:start}.account__form-head>svg{margin-top:2px;color:var(--brand-600)}.account__form-head strong{display:block;font-size:14px}.account__form-head p{margin:2px 0 0}.account__form-head p,.account__hint{color:var(--ink-muted);font-size:13px;line-height:1.55}.account__hint{margin:12px 0 0}.account__link-button{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;padding:0;background:none;color:var(--brand-600);font:inherit;text-decoration:underline;text-underline-offset:3px;cursor:pointer}.account__link-button:focus-visible{outline:none;box-shadow:var(--focus);border-radius:3px}.account__rows{margin:0;padding:0;list-style:none;display:grid}.account__rows li{display:grid;grid-template-columns:auto 1fr auto;align-items:center;grid-gap:14px;gap:14px;padding:14px 0;border-top:1px solid var(--hairline)}.account__rows li:first-child{border-top:0;padding-top:0}.account__rows li>svg{color:var(--brand-600)}.account__rows strong{display:block;font-size:14px}.account__rows p{margin-top:2px;color:var(--ink-muted);font-size:13px}.feature-hub{scroll-margin-top:84px;margin-bottom:28px}.feature-hub__heading{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:20px}.feature-hub__heading h2{font-size:30px;font-weight:650;letter-spacing:-.025em}.feature-hub__heading>div>p:last-child{max-width:680px;margin-top:8px;color:var(--ink-muted);font-size:13px;line-height:1.65}.feature-hub__index{flex:0 0 auto;display:grid;grid-template-columns:auto auto 1px auto auto;align-items:end;grid-gap:7px;gap:7px;padding-bottom:3px;color:var(--pending)}.feature-hub__index strong{color:var(--ink);font-family:var(--pr-font-mono);font-size:18px;line-height:1}.feature-hub__index span{padding-bottom:1px;font-family:var(--pr-font-mono);font-size:8px;font-weight:650;line-height:1;letter-spacing:.08em}.feature-hub__index i{width:1px;height:20px;margin:0 5px;background:var(--hairline)}.feature-workspaces{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px;gap:12px}.feature-workspace{min-width:0;padding:18px;border:1px solid var(--hairline);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-1);animation:home-rise var(--dur-slow) var(--ease-out) both;animation-delay:calc(var(--j, 0) * 60ms);transition:box-shadow var(--dur-med) var(--ease-out)}.feature-workspace:hover{box-shadow:var(--shadow-2)}.feature-workspace--learn{grid-column:1/-1}.feature-workspace>header{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;grid-gap:12px;gap:12px}.feature-workspace__icon{width:42px;height:42px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,var(--brand-50),var(--sky-50));color:var(--brand-600)}.feature-workspace>header small{display:block;margin-bottom:5px;color:var(--pending);font-family:var(--pr-font-mono);font-size:9px;font-weight:700;line-height:1;letter-spacing:.12em}.feature-workspace>header h3{font-size:16px}.feature-workspace>header>strong{color:var(--pending);font-family:var(--pr-font-mono);font-size:11px;font-weight:600;line-height:1}.feature-workspace>p{min-height:38px;margin:13px 0 15px;color:var(--ink-muted);font-size:11px;line-height:1.65}.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:4px;gap:4px;padding-top:6px;border-top:1px solid var(--hairline)}.feature-workspace--learn .feature-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.feature-card{width:100%;min-height:62px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;grid-gap:10px;gap:10px;padding:10px 8px;border:1px solid transparent;border-radius:var(--radius-md);background:var(--paper);color:var(--ink);text-align:left;cursor:pointer;transition:background-color var(--dur-fast) ease-out,border-color var(--dur-fast) ease-out,color var(--dur-fast) ease-out,transform var(--dur-med) var(--ease-out),box-shadow var(--dur-med) var(--ease-out)}.feature-card:hover{background:var(--surface);border-color:color-mix(in srgb,var(--brand-400) 40%,var(--hairline));color:var(--brand-600);transform:translateY(-2px);box-shadow:var(--shadow-2)}.feature-card:active{transform:scale(.98)}.feature-card__icon{transition:transform var(--dur-med) var(--ease-spring)}.feature-card:hover .feature-card__icon{transform:scale(1.12) rotate(-6deg);color:var(--brand-600)}.feature-card:focus-visible,.feature-card:target{outline:none;box-shadow:var(--focus);z-index:1}.feature-card__icon{width:30px;height:30px;display:grid;place-items:center;color:var(--ink-muted)}.feature-card__copy{min-width:0;display:grid;grid-gap:4px;gap:4px}.feature-card__copy strong{overflow:hidden;font-size:12px;font-weight:620;text-overflow:ellipsis;white-space:nowrap}.feature-card__copy small{font-size:9px;color:var(--ink-muted)}.feature-card>svg{color:var(--pending);transition:transform .18s ease-out}.feature-card:hover>svg{transform:translateX(2px)}.feature-card[data-available=false]{background:color-mix(in srgb,var(--paper) 60%,transparent);border:1px dashed color-mix(in srgb,var(--pending) 35%,var(--hairline));color:var(--ink-muted)}.feature-card[data-available=false] .feature-card__icon{color:var(--pending);filter:grayscale(1);opacity:.75}.feature-card[data-available=false]:hover{background:var(--surface);border-color:color-mix(in srgb,var(--pending) 55%,var(--hairline));color:var(--ink);transform:none;box-shadow:var(--shadow-1)}.feature-card[data-available=false]:hover .feature-card__icon{transform:none;color:var(--ink-muted)}.feature-card__soon{justify-self:start;padding:2px 7px;border-radius:999px;background:color-mix(in srgb,var(--pending) 12%,transparent);font-weight:600}.feature-filter{display:flex;flex-wrap:wrap;gap:8px;margin:-4px 0 16px}.feature-filter__chip{min-height:34px;padding:0 14px;border:1px solid var(--hairline);border-radius:999px;background:var(--surface);color:var(--ink-muted);font-size:13px;font-weight:600;cursor:pointer;transition:background-color var(--dur-fast) ease-out,color var(--dur-fast) ease-out,border-color var(--dur-fast) ease-out,transform var(--dur-med) var(--ease-spring)}.feature-filter__chip:hover{color:var(--brand-600);border-color:var(--brand-400);transform:translateY(-1px)}.feature-filter__chip[aria-pressed=true]{border-color:transparent;background:linear-gradient(100deg,var(--brand-600),color-mix(in srgb,var(--brand-600) 60%,var(--sky-600)));color:var(--on-brand);box-shadow:0 6px 16px color-mix(in srgb,var(--brand-500) 30%,transparent)}.feature-filter__chip:focus-visible{outline:none;box-shadow:var(--focus)}@media (pointer:coarse){.feature-filter__chip{min-height:var(--pr-tap-min)}}.feature-workspaces[data-filtered] .feature-workspace{grid-column:1/-1}.feature-hub__summary{margin-top:12px;color:var(--ink-muted);font-size:11px;text-align:right}.feature-dialog-copy{display:grid;justify-items:start;grid-gap:16px;gap:16px}.feature-dialog-copy>p{color:var(--ink-muted);font-size:14px;line-height:1.7}.feature-dialog-copy>div{width:100%;display:grid;grid-template-columns:auto 1fr;align-items:start;grid-gap:11px;gap:11px;padding:14px;border:1px solid color-mix(in srgb,var(--brand-400) 28%,var(--hairline));border-radius:var(--radius-md);background:var(--brand-50);color:var(--brand-600)}.feature-dialog-copy>div span{display:grid;grid-gap:4px;gap:4px}.feature-dialog-copy>div strong{font-size:12px}.feature-dialog-copy>div small{color:var(--ink-muted);font-size:11px;line-height:1.55}@media (max-width:1023px){.sidebar{transform:translateX(-100%);transition:transform .22s ease-out;box-shadow:18px 0 50px rgba(40,30,120,.18)}.sidebar.is-open{transform:translateX(0)}.sidebar__close{display:inline-grid}.sidebar-scrim{position:fixed;z-index:29;inset:0;display:block;border:0;background:rgba(20,16,50,.35);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);opacity:0;pointer-events:none;transition:opacity .22s ease-out}.sidebar-scrim.is-open{opacity:1;pointer-events:auto}.shell__main{margin-left:0}.topbar{padding:0 20px}.topbar__menu{display:inline-grid}.topbar__brand{display:inline-flex}.shell__content{width:min(100% - 40px,var(--shell-content-w))}.account,.dash__next{grid-template-columns:1fr}.account__nav{position:static;grid-auto-flow:column;grid-auto-columns:max-content;overflow-x:auto;padding-bottom:4px}}@media (max-width:767px){.shell__content{width:min(100% - 32px,var(--shell-content-w));padding-top:20px}.topbar{height:58px;padding:0 var(--pr-gutter);gap:10px}.topbar__context small,.topbar__context strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar__actions{gap:4px}}@media (max-width:639px){.topbar__brand .pr-logo__type{display:none}.topbar__actions .pr-button--ghost{font-size:0;gap:0;padding-inline:10px}}@media (pointer:coarse){.shell-icon-button,.topbar__avatar{min-width:var(--pr-tap-min);justify-content:center}.dash__more,.dash__stat a,.shell-icon-button,.topbar__avatar,.tutor__back{min-height:var(--pr-tap-min);align-items:center}.dash__more,.dash__stat a{display:inline-flex}}@media (max-width:767px){.dash__welcome{flex-direction:column;align-items:stretch}.dash__welcome h1{font-size:26px}.dash__grid{grid-template-columns:1fr}.dash__next{padding:20px}.dash__next-copy h2{font-size:22px}.dash__attention-item{grid-template-columns:auto 1fr}.dash__attention-item>a{grid-column:2;justify-self:start}.dash__row{grid-template-columns:auto 1fr auto}.dash__row>a{display:none}.account__head,.dash__panel-head,.dash__section-head,.feature-hub__heading{flex-direction:column;align-items:flex-start}.feature-hub__heading{align-items:flex-start}.feature-workspace,.feature-workspace--learn{grid-column:span 1}.feature-workspace--learn .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:639px){.dash__stats{grid-template-columns:repeat(2,minmax(0,1fr))}.dash__next-actions .pr-button{width:100%}.feature-hub__heading{display:grid}.feature-hub__index{justify-self:start}.feature-grid,.feature-workspace--learn .feature-grid,.feature-workspaces{grid-template-columns:1fr}.feature-workspace{padding:16px}.feature-card{min-height:58px}}.tutor{--tutor-h:calc(100dvh - var(--shell-topbar-h) - 56px);display:grid;grid-template-columns:260px minmax(0,1fr);grid-gap:24px;gap:24px;align-items:stretch;min-height:var(--tutor-h)}.tutor__list{display:flex;flex-direction:column;gap:6px;min-height:0}.tutor__list-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:6px}.tutor__list-head h2{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-muted)}.tutor__new{display:inline-flex;align-items:center;gap:6px;min-height:34px;padding:6px 10px;border-radius:8px;color:var(--brand-600);font-size:13px;font-weight:650}.tutor__new.is-active,.tutor__new:hover{background:var(--brand-50)}.tutor__new:focus-visible{outline:none;box-shadow:var(--focus)}.tutor__items{display:grid;grid-gap:4px;gap:4px;margin:0;padding:0;list-style:none;overflow-y:auto}.tutor__item{display:grid;grid-gap:2px;gap:2px;padding:10px 12px;border-radius:10px;color:var(--ink)}.tutor__item strong{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tutor__item small{color:var(--ink-muted);font-size:12px}.tutor__item:hover{background:var(--surface)}.tutor__item.is-active{background:var(--brand-50);color:var(--brand-600)}.tutor__item.is-active small{color:inherit;opacity:.8}.tutor__item:focus-visible{outline:none;box-shadow:var(--focus)}.tutor__list-empty,.tutor__list-error{padding:12px;border:1px dashed var(--hairline);border-radius:10px;color:var(--ink-muted);font-size:13px;line-height:1.5}.tutor__archived{margin-top:auto;padding-top:8px;border-top:1px solid var(--hairline)}.tutor__archived-toggle{display:inline-flex;align-items:center;min-height:34px;padding:6px 10px;border:0;border-radius:8px;background:none;color:var(--ink-muted);font:inherit;font-size:13px;font-weight:650;cursor:pointer}.tutor__archived-toggle:hover,.tutor__archived-toggle[aria-expanded=true]{background:var(--surface);color:var(--ink)}.tutor__archived-toggle:focus-visible{outline:none;box-shadow:var(--focus)}.tutor__items--archived{margin-top:4px}.tutor__archived-item{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 4px 6px 12px;border-radius:10px}.tutor__archived-title{display:grid;grid-gap:2px;gap:2px;min-width:0}.tutor__archived-title strong{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tutor__archived-title small{color:var(--ink-muted);font-size:12px}.tutor__main{min-width:0;min-height:0;height:var(--tutor-h)}.tutor__back{display:none}.tutor__conversation{display:grid;grid-template-rows:auto minmax(0,1fr);height:100%;min-height:0}.tutor__toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:0 4px 10px}.tutor__title{flex:1 1 200px;min-width:0;margin:0;overflow:hidden;font-size:15px;font-weight:600;text-overflow:ellipsis;white-space:nowrap}.tutor__archive-confirm,.tutor__rename{display:flex;flex:1 1 100%;flex-wrap:wrap;align-items:flex-end;gap:8px}.tutor__rename .pr-field{flex:1 1 240px}.tutor__archive-confirm span{flex:1 1 240px;color:var(--ink-muted);font-size:13px;line-height:1.5}.tutor__toolbar .tutor__error{flex:1 1 100%;margin:0}.tutor__new-panel{display:grid;grid-gap:18px;gap:18px;max-width:560px;padding:28px;border:1px solid var(--hairline);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-1)}.tutor__new-panel h2{font-size:22px;font-weight:650;letter-spacing:-.015em}.tutor__new-panel>p{margin:-8px 0 0;color:var(--ink-muted);font-size:14px;line-height:1.6}.tutor__new-panel form{display:grid;grid-gap:16px;gap:16px}.tutor__modes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:8px;gap:8px;margin:0;padding:0;border:0}.tutor__modes legend{margin-bottom:8px;font-size:13px;font-weight:650}.tutor__mode{position:relative;display:grid;grid-gap:4px;gap:4px;padding:12px 14px;border:1px solid var(--hairline);border-radius:10px;cursor:pointer}.tutor__mode input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}.tutor__mode strong{font-size:14px}.tutor__mode small{color:var(--ink-muted);font-size:12px;line-height:1.45}.tutor__mode:has(input:checked){border-color:var(--brand-600);background:var(--brand-50)}.tutor__mode:has(input:focus-visible){box-shadow:var(--focus)}.tutor__notice{padding:10px 12px;border-radius:8px;background:var(--brand-50);color:var(--brand-900);font-size:13px}.tutor__error{color:var(--incorrect);font-size:13px}@media (max-width:1023px){.tutor{--tutor-h:calc(100dvh - var(--shell-topbar-h) - 32px);grid-template-columns:1fr}.tutor--conversation .tutor__list{display:none}.tutor__back{display:inline-flex;align-items:center;gap:6px;margin-bottom:10px;color:var(--brand-600);font-size:13px;font-weight:650}.tutor__main{height:auto;min-height:var(--tutor-h)}.tutor__modes{grid-template-columns:1fr}}.mastery{display:grid;grid-gap:20px;gap:20px}.mastery__picker{max-width:420px}.ach{display:grid;grid-gap:24px;gap:24px}.ach__hero h1{margin:0;font:650 clamp(1.5rem,3vw,2rem) /1.15 var(--pr-font-display);letter-spacing:-.02em}.ach__hero p{max-width:620px;margin:10px 0 0;color:var(--ink-muted);font-size:.875rem;line-height:1.6}.ach__top{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-gap:16px;gap:16px}.ach__card{display:grid;grid-gap:8px;gap:8px;align-content:start;padding:20px;border:1px solid var(--hairline);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-1)}.ach__card h2,.ach__section-head h2{display:flex;align-items:center;gap:8px;margin:0;font:650 1rem/1.3 var(--pr-font-display)}.ach__card h2 svg{color:var(--partial)}.ach__card h3,.ach__card[data-status=at_risk] h2 svg,.ach__card[data-status=broken] h2 svg,.ach__card[data-status=freezable] h2 svg{color:var(--ink-muted)}.ach__card h3{margin:8px 0 0;font:600 .8rem/1.3 var(--pr-font-sans)}.ach__card p{margin:0;font-size:.875rem;line-height:1.55}.ach__card{position:relative}.ach__card .ach__big{font:650 2rem/1.1 var(--pr-font-mono);color:var(--ink)}.ach__muted{color:var(--ink-muted);font-size:.8rem}.ach__streak-art{position:absolute;top:16px;right:16px;width:112px;height:auto}@media (max-width:640px){.ach__streak-art{display:none}}.ach__ledger{display:grid;grid-gap:6px;gap:6px;margin:0;padding:0;list-style:none}.ach__ledger li{display:grid;grid-template-columns:1fr auto auto;grid-gap:10px;gap:10px;align-items:baseline;font-size:.82rem}.ach__ledger strong{font-family:var(--pr-font-mono);color:var(--correct)}.ach__ledger strong[data-negative]{color:var(--incorrect)}.ach__section-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px}.ach__section-head p{margin:0}.ach__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-gap:12px;gap:12px;margin:12px 0 0;padding:0;list-style:none}.ach__item{display:grid;grid-template-columns:auto 1fr;grid-gap:12px;gap:12px;padding:14px;border:1px solid var(--hairline);border-radius:var(--radius-md);background:var(--paper);color:var(--ink-muted)}.ach__item[data-unlocked]{background:var(--surface);color:var(--ink);border-color:color-mix(in srgb,var(--brand-400) 35%,var(--hairline));box-shadow:var(--shadow-1)}.ach__badge{align-self:start}@media (prefers-reduced-motion:no-preference){.ach__item[data-unlocked]:hover .ach__badge{transform:rotate(-4deg) scale(1.04)}}.ach__item strong{display:block;font-size:.9rem}.ach__item p{margin:2px 0 6px;line-height:1.5}.ach__item small{display:block;margin-top:6px;font-size:.74rem}.ach__bar{height:6px;overflow:hidden;background:var(--hairline)}.ach__bar,.ach__bar>span{display:block;border-radius:999px}.ach__bar>span{height:100%;background:var(--brand-600)}.teach__assignment{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-gap:12px;gap:12px;align-items:center}.teach__assignment strong{display:block;font-size:14px}.teach__assignment p{margin-top:2px;color:var(--ink-muted);font-size:13px}.teach__submissions{display:grid;grid-gap:8px;gap:8px;margin-top:10px;padding:12px 14px;border-radius:var(--radius-md);background:var(--paper)}.teach__search{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-gap:10px;gap:10px;align-items:end}.topbar__bell{position:relative;color:var(--ink-muted);text-decoration:none}.topbar__bell-count{position:absolute;top:2px;right:2px;min-width:16px;padding:0 4px;border-radius:999px;background:var(--incorrect);color:#fff;font:650 10px/16px var(--pr-font-sans);text-align:center}html{background:var(--paper)}body{position:relative;background:transparent}body:after,body:before{content:"";position:fixed;pointer-events:none}body:before{z-index:-2;inset:-25vmax;background:radial-gradient(closest-side at 22% 26%,var(--aurora-1),transparent),radial-gradient(closest-side at 80% 18%,var(--aurora-2),transparent),radial-gradient(closest-side at 64% 82%,var(--aurora-3),transparent);animation:fx-aurora 32s ease-in-out infinite alternate}body:after{z-index:-1;inset:0;background:url(/_next/static/media/grain.cfb70c0e.svg) 0 0/200px 200px repeat;opacity:var(--grain-opacity);mix-blend-mode:var(--grain-blend)}@keyframes fx-aurora{50%{transform:translate3d(4vmax,-3vmax,0) rotate(6deg) scale(1.06)}to{transform:translate3d(-3vmax,2vmax,0) rotate(-4deg) scale(1.02)}}.fx-layer{position:absolute;z-index:-1;inset:0;border-radius:inherit;pointer-events:none}.fx-layer--grain{background:url(/_next/static/media/grain.cfb70c0e.svg) 0 0/180px 180px repeat;opacity:calc(var(--grain-opacity) * 1.6);mix-blend-mode:var(--grain-blend)}.fx-layer--sparkles,.home-hero__sparkles{background:url(/_next/static/media/sparkles.e1856236.svg) 0 0/240px 240px repeat;-webkit-mask-image:radial-gradient(ellipse at 70% 40%,#000 20%,transparent 75%);mask-image:radial-gradient(ellipse at 70% 40%,#000 20%,transparent 75%);animation:fx-twinkle 5s ease-in-out infinite alternate}@keyframes fx-twinkle{0%{opacity:.35;transform:translateY(0)}to{opacity:.95;transform:translateY(-6px)}}.sidebar{background:var(--glass-strong);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-right-color:var(--glass-edge);box-shadow:1px 0 0 color-mix(in srgb,var(--hairline) 60%,transparent)}.sidebar__item.is-active:before{background:linear-gradient(var(--brand-600),var(--apricot-400));box-shadow:0 0 12px color-mix(in srgb,var(--brand-500) 55%,transparent)}.topbar{background:color-mix(in srgb,var(--paper) 60%,transparent);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur)}.dash__course,.dash__panel,.dash__section,.dash__stat,.home-quick__tile{background:var(--glass);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-color:var(--glass-edge);box-shadow:var(--shadow-1),inset 0 1px 0 var(--glass-edge)}.dash__course{background:linear-gradient(160deg,color-mix(in srgb,var(--glyph-tone) 12%,transparent) 0,var(--glass) 60%)}.dash__course:hover,.dash__panel:hover,.dash__stat:hover,.home-quick__tile:hover{border-color:color-mix(in srgb,var(--brand-400) 55%,var(--glass-edge));box-shadow:var(--shadow-3),inset 0 1px 0 var(--glass-edge)}.home-quick__icon{background:linear-gradient(135deg,var(--tone-soft),color-mix(in srgb,var(--tone) 28%,var(--tone-soft)));box-shadow:inset 0 1px 0 rgba(255,255,255,.5)}.home-quick__tile:hover .home-quick__icon{box-shadow:0 8px 20px color-mix(in srgb,var(--tone) 40%,transparent),inset 0 1px 0 rgba(255,255,255,.5)}.home-hero{border-color:var(--glass-edge);background:linear-gradient(125deg,color-mix(in srgb,var(--surface) 72%,transparent) 0,color-mix(in srgb,var(--brand-50) 55%,transparent) 55%,color-mix(in srgb,var(--sky-50) 60%,transparent) 100%);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);box-shadow:0 24px 60px color-mix(in srgb,var(--brand-500) 18%,transparent),inset 0 1px 0 var(--glass-edge)}.home-hero:after{content:"";position:absolute;z-index:-1;inset:0;pointer-events:none;background:url(/_next/static/media/grain.cfb70c0e.svg) 0 0/180px 180px repeat;opacity:calc(var(--grain-opacity) * 1.6);mix-blend-mode:var(--grain-blend)}.home-hero__blob{filter:blur(46px);opacity:.75}.home-hero__blob--violet{background:color-mix(in srgb,var(--brand-500) 42%,transparent)}.home-hero__blob--pink{width:240px;height:240px;top:-80px;right:18%;background:color-mix(in srgb,var(--apricot-400) 45%,transparent);animation:home-drift 19s ease-in-out infinite alternate}.home-hero__blob--sky{background:color-mix(in srgb,var(--sky-400) 50%,transparent)}.home-hero__sparkles{position:absolute;z-index:-1;inset:0;pointer-events:none}.home-hero h1{background:linear-gradient(100deg,var(--brand-900) 10%,var(--brand-600) 60%,#7c3aed);-webkit-background-clip:text;background-clip:text;color:transparent}[data-theme=dark] .home-hero h1{background-image:linear-gradient(100deg,var(--ink) 10%,var(--brand-900) 50%,var(--apricot-text))}.home-focus{border-color:var(--glass-edge);box-shadow:inset 0 1px 0 var(--glass-edge)}.home-focus,.home-streak{background:var(--glass-strong)}.home-streak{border-color:color-mix(in srgb,var(--apricot-400) 40%,var(--glass-edge));box-shadow:0 0 0 1px var(--glass-edge) inset}.home-streak .ring{filter:drop-shadow(0 0 14px color-mix(in srgb,var(--apricot-400) 45%,transparent))}@media (prefers-reduced-motion:reduce){.fx-layer--sparkles,.home-hero__sparkles,body:before{animation:none}}.shell-gate .pr-logo__spark{animation:fx-spark-spin 1.6s var(--ease-spring) infinite}.shell-gate__pulse:after{background:linear-gradient(90deg,var(--brand-600),var(--apricot-400))}@keyframes fx-spark-spin{0%,35%{transform:rotate(0deg) scale(1)}70%,to{transform:rotate(90deg) scale(1)}55%{transform:rotate(70deg) scale(1.2)}}.sidebar__item.is-planned small{padding:2px 7px;border-radius:999px;background:color-mix(in srgb,var(--pending) 12%,transparent);font-weight:600}.wb{--reason-concept:var(--brand-600);--reason-calculation:var(--sky-600);--reason-misread:var(--apricot-400);--reason-careless:var(--tier-3);--reason-time:var(--sys-igcse);--reason-unknown:var(--pending);display:grid;grid-gap:18px;gap:18px}.wb [data-reason=concept]{--reason:var(--reason-concept)}.wb [data-reason=calculation]{--reason:var(--reason-calculation)}.wb [data-reason=misread]{--reason:var(--reason-misread)}.wb [data-reason=careless]{--reason:var(--reason-careless)}.wb [data-reason=time]{--reason:var(--reason-time)}.wb [data-reason=unknown]{--reason:var(--reason-unknown)}.wb__lede{max-width:720px;color:var(--ink-muted);font-size:14px;line-height:1.7}.wb-summary{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);grid-gap:16px;gap:16px;padding:20px;border:1px solid var(--glass-edge);border-radius:var(--radius-xl);background:var(--glass);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);box-shadow:var(--shadow-1),inset 0 1px 0 var(--glass-edge)}.wb-summary__stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:10px;gap:10px;margin:0}.wb-summary__stats>div{padding:12px 14px;border-radius:var(--radius-lg);background:var(--glass-strong)}.wb-summary__stats dt{color:var(--ink-muted);font-size:12px;font-weight:600}.wb-summary__stats dd{margin:4px 0 0;color:var(--ink);font:700 26px/1.1 var(--pr-font-mono);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.wb-summary__stats [data-key=active] dd{color:var(--brand-600)}.wb-summary__stats [data-key=mastered] dd{color:var(--correct)}.wb-summary__dist h2{margin-bottom:12px;font-size:14px;font-weight:700}.wb-summary__dist>p{color:var(--ink-muted);font-size:13px;line-height:1.6}.wb-summary__bar{display:flex;gap:3px;height:12px;overflow:hidden;border-radius:999px;background:var(--hairline)}.wb-summary__bar span{min-width:6px;background:var(--reason);transform-origin:left;animation:wb-grow var(--dur-slow) var(--ease-out) both}@keyframes wb-grow{0%{transform:scaleX(0)}}.wb-summary__legend{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:8px 12px;gap:8px 12px;margin:14px 0 0;padding:0;list-style:none;font-size:12px;color:var(--ink-muted)}.wb-summary__legend li{display:flex;align-items:center;gap:6px}.wb-summary__legend i{width:8px;height:8px;border-radius:50%;background:var(--reason)}.wb-summary__legend strong{margin-left:auto;color:var(--ink);font-family:var(--pr-font-mono)}.wb__filters{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px 16px}.wb__segmented{display:inline-flex;padding:4px;border-radius:999px;background:var(--glass-strong);border:1px solid var(--hairline)}.wb-card__reasons button,.wb__chips button,.wb__segmented button{min-height:34px;border:1px solid transparent;border-radius:999px;background:transparent;color:var(--ink-muted);font-size:13px;font-weight:600;cursor:pointer;transition:background-color var(--dur-fast) ease-out,color var(--dur-fast) ease-out,border-color var(--dur-fast) ease-out}.wb__segmented button{display:inline-flex;align-items:center;gap:6px;padding:0 14px}.wb__segmented button small{font:600 11px/1 var(--pr-font-mono);opacity:.8}.wb__segmented button[aria-pressed=true]{background:var(--brand-gradient);color:var(--on-brand);box-shadow:0 6px 14px color-mix(in srgb,var(--brand-500) 30%,transparent)}.wb__chips{display:flex;flex-wrap:wrap;gap:6px}.wb-card__reasons button,.wb__chips button{display:inline-flex;align-items:center;gap:6px;padding:0 12px;border-color:var(--hairline);background:var(--surface)}.wb-card__reasons button[data-reason]:before,.wb__chips button[data-reason]:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--reason)}.wb-card__reasons button:hover:not(:disabled),.wb__chips button:hover{color:var(--ink);border-color:color-mix(in srgb,var(--reason,var(--brand-400)) 55%,var(--hairline))}.wb-card__reasons button[aria-pressed=true],.wb__chips button[aria-pressed=true]{color:var(--ink);border-color:var(--reason,var(--brand-600));background:color-mix(in srgb,var(--reason,var(--brand-600)) 12%,var(--surface))}.wb-card__reasons button:focus-visible,.wb__chips button:focus-visible,.wb__segmented button:focus-visible{outline:none;box-shadow:var(--focus)}.wb__course{min-width:220px}.wb__notice{padding:10px 12px;border-radius:var(--radius-md);background:color-mix(in srgb,var(--incorrect) 9%,var(--surface));color:var(--incorrect);font-size:13px}.wb__list{display:grid;grid-gap:14px;gap:14px;margin:0;padding:0;list-style:none}.wb__skeleton{height:180px;border-radius:var(--radius-lg)}.wb-card{display:grid;grid-gap:14px;gap:14px;padding:18px 20px;border:1px solid var(--glass-edge);border-radius:var(--radius-lg);background:var(--glass-strong);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);box-shadow:var(--shadow-1),inset 0 1px 0 var(--glass-edge);animation:home-rise var(--dur-slow) var(--ease-out) both;animation-delay:calc(var(--i, 0) * 50ms)}.wb-card[data-status=mastered]{border-left:4px solid var(--correct)}.wb-card[data-status=archived]{opacity:.78}.wb-card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;color:var(--ink-muted);font-size:12px}.wb-card__subject{padding:3px 9px;border-radius:999px;background:var(--brand-50);color:var(--brand-900);font-weight:650}.wb-card__count{color:var(--apricot-text);font-weight:700}.wb-card__stem{color:var(--ink);font-size:16px;line-height:1.65}.wb-card__stem p{margin:0 0 6px}.wb-card__label{display:block;color:var(--ink-muted);font-size:12px;font-weight:650}.wb-card__reasons{display:flex;flex-wrap:wrap;align-items:center;gap:6px}.wb-card__reasons .wb-card__label{width:100%;margin-bottom:2px}.wb-card__reasons button{min-height:30px;font-size:12px}.wb-card__reasons button:disabled{cursor:progress}.wb-card__clear{width:30px;justify-content:center;padding:0!important}.wb-card__note{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;grid-gap:10px;gap:10px}.wb-card__note label{display:grid;grid-gap:6px;gap:6px}.wb-card__note textarea{width:100%;min-height:56px;padding:10px 12px;border:1px solid var(--hairline);border-radius:var(--radius-md);background:var(--surface);color:var(--ink);font:inherit;font-size:14px;line-height:1.5;resize:vertical}.wb-card__note textarea:focus-visible{outline:none;border-color:var(--brand-400);box-shadow:var(--focus)}.wb-card__saved{color:var(--correct);font-size:12px;font-weight:650}.wb-card__actions{display:flex;flex-wrap:wrap;gap:8px;padding-top:12px;border-top:1px dashed var(--hairline)}.wb__more{display:flex;justify-content:center}@media (max-width:767px){.wb-summary{grid-template-columns:1fr;padding:16px}.wb-summary__legend{grid-template-columns:repeat(2,minmax(0,1fr))}.wb__segmented{width:100%;overflow-x:auto}.wb__course{width:100%}.wb-card{padding:16px}.wb-card__note{grid-template-columns:1fr}}.home-week{display:grid;grid-template-columns:repeat(7,1fr);grid-gap:5px;gap:5px;width:100%;height:46px;margin-top:10px;padding:0 4px}.home-week__day{display:grid;grid-template-rows:1fr auto;justify-items:center;grid-gap:3px;gap:3px;min-width:0}.home-week__day i{align-self:end;width:100%;max-width:14px;height:var(--h,10%);border-radius:999px;background:color-mix(in srgb,var(--hairline) 80%,transparent);transform-origin:bottom;animation:home-grow var(--dur-slow) var(--ease-out) both;animation-delay:calc(.5s + var(--j, 0) * 60ms)}.home-week__day[data-active] i{background:linear-gradient(180deg,var(--apricot-400),color-mix(in srgb,var(--apricot-400) 55%,var(--brand-400)))}.home-week__day[data-today] i{background:var(--brand-gradient);box-shadow:0 0 10px color-mix(in srgb,var(--brand-500) 45%,transparent)}.home-week__day small{color:var(--ink-muted);font-size:10px;line-height:1}.home-week__day[data-today] small{color:var(--brand-600);font-weight:700}.dash__stat-meter{display:block;height:6px;margin-top:10px;overflow:hidden;border-radius:999px;background:color-mix(in srgb,var(--tone,var(--brand-500)) 14%,var(--hairline))}.dash__stat-meter i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--tone-ink,var(--brand-600)),var(--tone,var(--brand-500)));transition:width .9s var(--ease-out)}.dash__stat[data-done] .dash__stat-meter i{background:var(--correct)}