:root{--color-accent-primary: #25d366;--color-accent-primary-deep: #00a884;--color-accent-primary-hover: #00a884;--color-accent-primary-soft: rgba(37, 211, 102, .35);--color-accent-primary-tint: rgba(37, 211, 102, .1);--color-brand-deep-teal: #128c7e;--color-receipt-blue: #53bdeb;--color-warning-amber: #ff9f1c;--color-danger-red: #d32f2f;--color-error-text: #b00020;--color-bg-danger-soft: #ffebee;--color-toast-info: #2f80ed;--color-toast-success: #27ae60;--color-toast-error: #c0392b;--color-surface: #ffffff;--color-surface-chrome: #f0f2f5;--color-surface-soft: #f5f6f6;--color-surface-app-bg: #dcdddb;--color-surface-wallpaper: #efeae2;--color-surface-no-selected-bg: #f7f7f7;--color-msg-bubble-sent: #ffffff;--color-msg-bubble-received: #d9fdd3;--color-selected-chat-bg: #f5f6f6;--color-presence-offline: #b0bec5;--color-surface-hover-chrome: #e8eaed;--color-surface-hover-search: #e8f0fe;--color-surface-active-search: #e8f5e8;--color-surface-active-contact: #e4e6ea;--color-ink: #111b21;--color-ink-secondary: #3b4a54;--color-ink-tertiary: #41525d;--color-ink-muted: #667781;--color-ink-icon-idle: #54656f;--color-ink-placeholder: #8696a0;--color-ink-on-accent: #ffffff;--color-line: #e9edef;--color-line-soft: #f2f2f2;--color-line-strong: #d1d7db;--color-line-strong-hover: #bcc3c7;--color-line-translucent: rgba(134, 150, 160, .15);--color-line-translucent-soft: rgba(134, 150, 160, .08);--color-scrollbar-thumb: rgba(134, 150, 160, .3);--color-scrollbar-thumb-hover: rgba(134, 150, 160, .5);--color-skeleton-base: #eceff1;--color-skeleton-highlight: #f5f7f8;--font-family-base: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-size-display: clamp(1.75rem, 5vw, 2.25rem);--font-size-title: 16px;--font-size-body: 14.5px;--font-size-preview: 14px;--font-size-input: 15px;--font-size-label: 12px;--font-size-caption: 11px;--font-size-icon-button: 13px;--font-weight-regular: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--line-height-tight: 1.15;--line-height-normal: 1.25;--line-height-relaxed: 1.4;--letter-spacing-tight: -.01em;--letter-spacing-normal: .1px;--letter-spacing-wide: .02em;--radius-xs: 6px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 18px;--radius-xl: 20px;--radius-pill: 9999px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--shadow-ambient: 0 1px 2px rgba(0, 0, 0, .08);--shadow-focus-ring: 0 0 0 2px var(--color-accent-primary-soft);--shadow-toast: 0 4px 12px rgba(0, 0, 0, .18);--shadow-modal: 2px 0 6px rgba(0, 0, 0, .05);--duration-fast: .12s;--duration-standard: .2s;--duration-emphasis: .32s;--ease-standard: cubic-bezier(.4, 0, .2, 1);--ease-emphasis: cubic-bezier(.22, 1, .36, 1);--size-avatar-sm: 32px;--size-avatar-md: 40px;--size-avatar-lg: 52px;--size-icon-button: 40px;--size-touch-target-mobile: 44px;--size-header-height: 60px;--size-chat-row-min: 72px}@media(prefers-reduced-motion:reduce){:root{--duration-fast: 0ms;--duration-standard: 0ms;--duration-emphasis: 0ms}}html,body{height:100%;margin:0;overflow:hidden;font-family:var(--font-family-base);color:var(--color-ink);background:var(--color-surface-app-bg)}