:root{--valard-yellow: #ffa700;--valard-yellow-soft:#ffcc00;--valard-blue: #006a9e;--valard-blue-dark: #004f78;--ink: #000000;--graphite: #8f8f8f;--border-gray: #979797;--border-hairline: #DDE0E3;--paper: #f6f6f6;--fog: #ededed;--white: #ffffff;--off-white: #fafaf8;--dark: #000000;--dark-2: #0c0c0c;--dark-3: #1a1a1a;--dark-4: #2a2a2a;--steel: #515151;--steel-light: #737373;--red-focus-ring: rgba(213, 42, 29, .18);--red-subtle: rgba(213, 42, 29, .06);--success: #1a6e3a;--success-bg: #edf7f0;--success-border: #a3d9b8;--error-bg: #fff0f1;--error-border: #ffb8c0;--error-text: #7d0018;--font-display: "Inter", "Helvetica Neue", Arial, sans-serif;--font-body: "Inter", "Helvetica Neue", Arial, sans-serif;--font-mono: "JetBrains Mono", "Consolas", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-md: 1.0625rem;--text-lg: 1.125rem;--text-xl: 1.5rem;--text-2xl: 1.625rem;--text-3xl: 2rem;--leading-tight: 1;--leading-snug: 1.2;--leading-body: 1.4;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--space-8: 64px;--space-9: 96px;--radius-none: 0;--radius-sm: 2px;--radius-md: 4px;--radius-lg: 8px;--shadow-xs: 0 1px 2px rgba(0,0,0,.04);--shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);--shadow-lg: 0 10px 24px rgba(0,0,0,.1), 0 2px 6px rgba(0,0,0,.06);--shadow-header: 0 2px 0 var(--valard-red);--ease: cubic-bezier(.2, .6, .2, 1);--duration-fast: .15s;--duration: .22s;--duration-slow: .32s;--red: var(--valard-red);--red-dark: var(--valard-red-dark);--red-light: #e8392c;--red-glow: var(--red-focus-ring);--surface: var(--paper);--surface-2: var(--fog);--border: var(--border-hairline);--border-light: #ebeef0;--border-dark: var(--dark-4);--text: var(--ink);--text-2: #2a2a2a;--text-muted: var(--graphite);--text-faint: #b3b3b3;--source-blue: var(--valard-blue);--valard-red: #d52a1d;--valard-red-dark: #a11e14;--valard-dark: var(--dark-3);--valard-gray: var(--dark-4);--valard-light: var(--paper);--valard-white: var(--white);--valard-border: var(--border-hairline);--valard-source: var(--valard-blue);--bubble-user: var(--valard-red);--bubble-assistant: var(--white);--text-on-red: var(--white);--text-dark: var(--ink);--text-gray: var(--graphite);--shadow: var(--shadow-sm);--font: var(--font-body);--transition: var(--duration) var(--ease);--transition-fast: var(--duration-fast) var(--ease);--radius-xs: var(--radius-md);--radius: var(--radius-md);--radius-xl: 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