*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-primary:#22324A;--color-secondary:#ACCBE1;--color-accent:#B58325;--color-accent-hover:#794B1B;--color-surface:#FFFFFF;--color-surface-alt:#FAF7ED;--color-surface-elevated:rgba(255,255,255,0.85);--color-border:#F4EBD9;--color-text:#5A6573;--color-text-title:#22324A;--color-text-meta:#999999;--color-user-bubble:#B58325;--color-user-text:#FFFFFF;--color-assistant-bubble:#F5F1E8;--color-assistant-text:#22324A;--color-input-bg:#FFFFFF;--color-shadow:rgba(0,0,0,0.08);--gradient-hero:linear-gradient(135deg,#22324A,#1a2738 50%,#22324A);--gradient-welcome:linear-gradient(135deg,#22324A,#2B3E5B);--font-body:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI",Roboto,sans-serif;--font-heading:-apple-system,BlinkMacSystemFont,"Inter Tight","Segoe UI",sans-serif;--radius-card:16px;--radius-bubble:24px;--radius-avatar:50%;--spacing-section:24px;--spacing-element:16px;--transition-fast:0.2s ease;--transition-normal:0.3s 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