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#222222;--mastery-unattempted: #e3e4e0;--mastery-weak: #8c3230;--mastery-low: #bd5a35;--mastery-developing: #c99a35;--mastery-good: #7ba668;--mastery-mastered: #3f8a52;--mastery-no-data: #dde1e6;--list-recall-unfound: #e3e4e0;--continent-world: #4f718d;--continent-africa: #a66c3e;--continent-europe: #4e75a6;--continent-asia: #a45f45;--continent-north-america: #3f827d;--continent-south-america: #4f855c;--continent-oceania: #398993}:root[data-theme=dark]{--bg: #171817;--surface: #1f201f;--surface-soft: #252625;--text: #f1f1ed;--muted: #a3a59f;--border: #3a3b38;--border-strong: #565853;--accent: #efefeb;--accent-contrast: #191a19;--accent-hover: color-mix(in srgb, var(--accent) 90%, black);--accent-pressed: color-mix(in srgb, var(--accent) 78%, black);--accent-subtle: color-mix(in srgb, var(--accent) 14%, var(--surface));--accent-border: color-mix(in srgb, var(--accent) 45%, var(--border));--success-soft: #183426;--danger-soft: #38201f;--shadow: none;--map-canvas: #202120;--map-surface: 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em{color:var(--muted);font-style:normal}.quiet-empty,.success-empty{min-height:90px;display:flex;gap:9px;align-items:center;justify-content:center;color:var(--muted);font-size:.86rem;text-align:center}.session-overview-page{--session-accent: #4f718d}.session-library-section+.session-library-section{margin-top:48px}.preset-session-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.preset-session-card{--session-accent: #4f718d;position:relative;min-width:0;overflow:hidden;padding:18px;display:flex;flex-direction:column;border-top:3px solid var(--session-accent)}.preset-session-card.accent-africa{--session-accent: #a66c3e}.preset-session-card.accent-europe{--session-accent: #4e75a6}.preset-session-card.accent-asia{--session-accent: #a45f45}.preset-session-card.accent-north-america{--session-accent: #3f827d}.preset-session-card.accent-south-america{--session-accent: #4f855c}.preset-session-card.accent-oceania{--session-accent: 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