:root{--bg:#f5f7fb;--panel:#ffffff;--line:#dde3ed;--text:#202533;--muted:#55607a;--accent:#1d6bca;--accent-soft:#eaf2fb;--danger:#b00020;--modal-overlay:rgba(13, 20, 32, 0.5);--mobile-dimmer:rgba(248, 252, 255, 0.75)}body.dark-theme{--bg:#0c131f;--panel:#131d2d;--line:#24334f;--text:#d9e4f8;--muted:#a7b7d7;--accent:#69a5ff;--accent-soft:#1a2941;--danger:#ff8b9f;--modal-overlay:rgba(6, 10, 16, 0.68);--mobile-dimmer:rgba(11, 18, 28, 0.68)}*{box-sizing:border-box}body,html{margin:0;width:100%;height:100%;font-family:"Nunito Sans","Trebuchet MS","Segoe UI","Avenir Next",Arial,sans-serif;color:var(--text);background:var(--bg)}body{overflow:hidden;overscroll-behavior:none;touch-action:none}html{overflow:hidden;touch-action:none}#app{width:100vw;height:100vh;display:grid;grid-template-columns:330px 1fr 390px;gap:12px;padding:12px;height:100vh}body.mode-phone #app,body.mode-tablet #app{position:relative;padding:8px;gap:0}body.mode-phone #left-panel,body.mode-phone #right-panel,body.mode-phone 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