:root{--color-bg-primary: #ffffff;--color-bg-secondary: #FAF9F5;--color-bg-tertiary: #f0f0ef;--color-text-primary: #2d2d2d;--color-text-secondary: #6b6b6b;--color-text-tertiary: #9b9b9b;--color-accent: #d97757;--color-accent-hover: #c4613f;--color-accent-light: #fef3ef;--color-user-message: #F0EEE6;--color-user-message-text: #2d2d2d;--color-ai-message: transparent;--color-ai-message-text: #2d2d2d;--color-border: #e8e8e7;--color-divider: #e8e8e7;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-size-xs: 12px;--font-size-sm: 14px;--font-size-base: 16px;--font-size-lg: 18px;--font-size-xl: 20px;--font-weight-regular: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--space-xs: 4px;--space-sm: 8px;--space-md: 12px;--space-lg: 16px;--space-xl: 20px;--space-2xl: 24px;--space-3xl: 32px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--radius-full: 999px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .06);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .08);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1);--header-height: 56px;--input-height: 52px;--max-width: 680px;--mobile-font-size-xs: 11px;--mobile-font-size-sm: 13px;--mobile-font-size-base: 15px;--mobile-font-size-lg: 16px;--mobile-font-size-xl: 18px;--mobile-space-xs: 4px;--mobile-space-sm: 6px;--mobile-space-md: 10px;--mobile-space-lg: 12px;--mobile-space-xl: 16px;--mobile-space-2xl: 20px;--mobile-space-3xl: 24px;--mobile-header-height: 52px;--touch-target-min: 44px}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden}body{font-family:var(--font-family);font-size:var(--font-size-base);color:var(--color-text-primary);background-color:var(--color-bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6;letter-spacing:-.01em;font-feature-settings:"kern" 1,"liga" 1}#app{height:100%;display:flex;flex-direction:column}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-tertiary)}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}@media(prefers-reduced-motion:no-preference){*{transition-timing-function:cubic-bezier(.4,0,.2,1)}}@media(max-width:768px){body{font-size:var(--mobile-font-size-base)}*{-webkit-overflow-scrolling:touch}::-webkit-scrollbar{width:3px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}