:root{color-scheme:light;--surface-page:#f9f9f7;--surface-card:#fcfcfb;--text-primary:#0b0b0b;--text-secondary:#52514e;--text-muted:#898781;--gridline:#e1e0d9;--axis:#c3c2b7;--border:rgba(11,11,11,0.10);--shadow:rgba(11,11,11,0.08);--cat-1:#2a78d6;--cat-2:#eb6834;--cat-3:#a0522d;--cat-4:#1baf7a;--cat-5:#eda100;--cat-6:#e87ba4;--cat-7:#008300;--cat-8:#4a3aa7;--cat-9:#e34948;--gold:#b8860b;--period-color:#d2a679;--book-color:#5b3c88}:root[data-theme=dark]{color-scheme:dark;--surface-page:#0d0d0d;--surface-card:#1a1a19;--text-primary:#ffffff;--text-secondary:#c3c2b7;--text-muted:#898781;--gridline:#2c2c2a;--axis:#383835;--border:rgba(255,255,255,0.10);--shadow:rgba(0,0,0,0.40);--cat-1:#3987e5;--cat-2:#d95926;--cat-3:#8b4a1f;--cat-4:#199e70;--cat-5:#c98500;--cat-6:#d55181;--cat-7:#008300;--cat-8:#9085e9;--cat-9:#e66767;--gold:#d4af37;--period-color:#c9946a;--book-color:#7a56b3}:root[data-theme=night]{color-scheme:dark;--surface-page:#0a0000;--surface-card:#170404;--text-primary:#ff5c5c;--text-secondary:#c24545;--text-muted:#7a2c2c;--gridline:#2a0a0a;--axis:#5c1f1f;--border:rgba(255,77,77,0.18);--shadow:rgba(0,0,0,0.60);--cat-1:#ff5252;--cat-2:#ff7043;--cat-3:#a66a3a;--cat-4:#e2534f;--cat-5:#ff9466;--cat-6:#d43d3d;--cat-7:#c1512f;--cat-8:#ff8a80;--cat-9:#8f2d2d;--gold:#d9a441;--period-color:#b5673f;--book-color:#9569c4}*{box-sizing:border-box}[hidden]{display:none!important}body,html{margin:0;height:100%;background:var(--surface-page);color:var(--text-primary);font-family:system-ui,-apple-system,"Segoe 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10px;font-size:.78rem;appearance:none;-webkit-appearance:none;-moz-appearance:none}.select-chevron{position:absolute;right:9px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none}.app-title{font-size:1.15rem;margin:0;font-weight:600;letter-spacing:.01em;cursor:pointer;border-radius:6px}.app-title:focus-visible,.app-title:hover{color:var(--book-color)}.app-title:focus-visible{outline:2px solid var(--book-color);outline-offset:3px}.title-row{display:flex;align-items:center;gap:8px}.toggle-options-btn{background:0 0;border:none;color:var(--text-primary);width:40px;height:40px;flex-shrink:0;display:flex;align-items:center;justify-content:center;cursor:pointer}.toggle-options-btn:hover{color:var(--cat-1)}.toggle-options-btn .chevron-icon{color:var(--text-muted);transition:transform .15s ease}.toolbar.is-collapsed .toggle-options-btn 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