:root{color-scheme:light;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;--bg: #f3f6fa;--panel: #ffffff;--panel-soft: #f8fafc;--ink: #132033;--muted: #647184;--line: #dce4ee;--line-strong: #bdc9d8;--accent: #0d8f8b;--accent-dark: #08706d;--blue: #1d4f8f;--shadow: 0 18px 55px rgba(27, 41, 63, .1)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:var(--bg);color:var(--ink)}button,input,select{font:inherit}button{border:0;cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}.app-shell{min-height:100vh;display:grid;grid-template-columns:320px minmax(420px,1fr) 320px;gap:14px;padding:14px}.source-panel,.reader-panel,.playback-panel{min-height:calc(100vh - 28px);background:var(--panel);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow)}.source-panel,.playback-panel{display:flex;flex-direction:column;padding:18px;overflow:hidden}.brand{display:flex;gap:12px;align-items:center;padding-bottom:18px;border-bottom:1px solid var(--line)}.brand-mark{width:42px;height:42px;display:grid;place-items:center;border-radius:8px;background:#dff6f3;color:var(--accent-dark)}.brand-mark.with-logo{overflow:hidden;background:#fff;border:1px solid var(--line)}.brand-mark img{width:100%;height:100%;object-fit:contain;padding:5px}.app-links{display:grid;grid-template-columns:1fr;gap:8px;padding:14px 0 0}.app-links a,.app-links button{min-height:38px;display:flex;align-items:center;justify-content:center;gap:8px;border-radius:8px;border:1px solid var(--line);background:var(--panel-soft);color:var(--ink);font-weight:700;text-decoration:none}.app-links a:hover,.app-links button:hover:not(:disabled){border-color:var(--accent);color:var(--accent-dark)}h1,h2,p{margin:0}h1{font-size:1.25rem;line-height:1.1;letter-spacing:0}.brand p,.hint,.status,.selection-item small,.queue-box,.welcome p{color:var(--muted);line-height:1.45}.brand p{margin-top:3px;font-size:.86rem}.panel-section,.voice-controls,.queue-preview,.now-playing{padding:18px 0;border-bottom:1px solid var(--line)}.panel-section h2,.voice-controls h2,.queue-preview h2,.now-playing h2{margin-bottom:12px;font-size:.82rem;line-height:1;text-transform:uppercase;letter-spacing:0;color:#344258}.file-drop,.url-form,.segmented,.play-mode,.toolbar-controls,.transport{display:flex;align-items:center}.file-drop{position:relative;justify-content:center;gap:8px;height:46px;border:1px dashed var(--line-strong);border-radius:8px;background:var(--panel-soft);color:var(--blue);font-weight:700}.file-drop input{position:absolute;inset:0;opacity:0;cursor:pointer}.url-form{margin-top:10px;height:42px;gap:8px;padding:0 8px 0 12px;border:1px solid var(--line);border-radius:8px;background:#fff}.url-form input{min-width:0;flex:1;border:0;outline:0;color:var(--ink)}.url-form button,.toolbar-controls button,.transport button{width:34px;height:34px;display:grid;place-items:center;border-radius:8px;background:var(--panel-soft);color:var(--ink)}.status{margin-top:10px;font-size:.84rem}.segmented,.play-mode{padding:3px;gap:3px;border-radius:8px;background:#eef3f8}.segmented button,.play-mode button{flex:1;height:34px;display:flex;align-items:center;justify-content:center;gap:7px;border-radius:7px;background:transparent;color:var(--muted);font-size:.88rem;font-weight:700}.segmented button.active,.play-mode button.active{background:#fff;color:var(--accent-dark);box-shadow:0 2px 8px #14263e14}.hint{margin-top:10px;font-size:.84rem}.selection-list-section{min-height:0;flex:1;border-bottom:0}.section-title-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.section-title-row span,.section-title-row svg{color:var(--accent);font-weight:800}.selection-list{display:grid;gap:8px;max-height:calc(100vh - 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