:root{--font-sans:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI",sans-serif;--font-mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,Courier,monospace;--radius-sm:.375rem;--radius:.625rem;--radius-lg:1rem;--radius-xl:1.5rem;--sidebar-w:15rem;--topbar-h:3.75rem;--shadow-card:0 1px 2px rgba(16,20,30,.04),0 4px 16px 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1px 2px rgba(0,0,0,.3),0 6px 20px rgba(0,0,0,.35)}*{box-sizing:border-box}body,html{padding:0;margin:0}body{font-family:var(--font-sans);background:var(--c-bg-page-secondary,#f5f6fa);color:var(--c-text-primary,#22262f);-webkit-font-smoothing:antialiased;font-size:.9375rem;line-height:1.5}a{color:inherit;text-decoration:none}h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;color:var(--c-text-primary)}::selection{background:var(--c-fill-brand,#e8e4fb)}.app{display:grid;grid-template-columns:var(--sidebar-w) 1fr;min-height:100vh}.sidebar{position:-webkit-sticky;position:sticky;top:0;height:100vh;padding:1rem .75rem;background:color-mix(in srgb,var(--c-bg-neutral-secondary,#fafbfd) 88%,transparent);border-right:1px solid var(--c-border-neutral,#ebeef5);display:flex;flex-direction:column;gap:.25rem;-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px)}.brand{display:flex;gap:.6rem;padding:.35rem .6rem 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1}.topbar-brand{display:none;align-items:center;gap:.55rem;font-weight:800;letter-spacing:-.03em}.profile-button,.theme-button{display:grid;place-items:center;width:36px;height:36px;flex:none;border:1px solid var(--sep);border-radius:50%;background:var(--surface);color:var(--label);font-family:inherit;font-size:.82rem;font-weight:800;cursor:pointer;box-shadow:0 3px 10px rgba(20,20,40,.05)}.profile-button{overflow:hidden}.profile-button img{width:100%;height:100%;object-fit:cover}.theme-button{font-size:1rem}.pill{display:inline-flex;align-items:center;gap:.35rem;padding:.3rem .6rem;border-radius:6.25rem;font-weight:700;font-size:.8rem;background:var(--c-fill-secondary,#f5f6fa)}.chip-xp{color:var(--c-fill-brand-bold,#8b6ffb);background:var(--c-fill-brand,#f3f1fd)}.chip-streak{color:#ff602e;background:var(--c-fill-danger,#fff2f0)}.grid{display:grid;grid-gap:1rem;gap:1rem}.cards{grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}.card{background:color-mix(in 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