:root{--bg:#0f1115;--bg-elevated:#171a21;--bg-card:#1c2029;--border:#2a2f3a;--text:#e8eaf0;--text-muted:#9aa3b2;--text-faint:#6b7380;--accent:#7c5cff;--topic-color:var(--accent);--radius:16px;--radius-sm:10px;--maxw:720px;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;color:var(--text);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{background:radial-gradient(1200px 600px at 80% -10%, #7c5cff1f, transparent), var(--bg)}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.shell{flex-direction:column;min-height:100vh;display:flex}.topbar{z-index:10;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);background:#0f1115cc;position:sticky;top:0}.topbar__inner{max-width:var(--maxw);justify-content:space-between;align-items:center;margin:0 auto;padding:14px 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0;border-radius:999px;padding:6px 12px;font-size:12px;font-weight:600;transition:all .15s}.card-done:hover{color:var(--text);border-color:var(--text-faint)}.card-done--active{color:#7ee0a1;border-color:color-mix(in srgb, #7ee0a1 40%, var(--border));background:#7ee0a11f}.sources{border-top:1px dashed var(--border);margin-top:16px;padding-top:12px}.sources__label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-faint);margin-bottom:4px;font-size:10px;font-weight:700;display:block}.sources__list{margin:0;padding:0;list-style:none}.sources__item{color:var(--text-muted);margin-bottom:4px;font-size:13px;line-height:1.5}.sources__marker{color:var(--topic-color);font-variant-numeric:tabular-nums;font-weight:700}.sources__excerpt{color:var(--text-faint);margin-left:22px;font-size:12px;font-style:italic;display:block}.chord{border-radius:var(--radius-sm);background:var(--bg-elevated);border:1px solid 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