:root{--color-primary: #5b5bd6;--color-primary-light: #7c7ce8;--color-primary-dark: #4040c0;--color-bubble-user-bg: #5b5bd6;--color-bubble-user-text: #ffffff;--color-bubble-ai-bg: #ffffff;--color-bubble-ai-text: #1a1a2e;--color-bg: #f7f7fb;--color-bg-input: #f0f0f8;--color-text-primary: #1a1a2e;--color-text-secondary: #6b6b8a;--color-text-hint: #9b9bb4;--color-text-tertiary: #8d8f90;--color-text-quaternary: #bcbebe;--color-border: #e8e8f0;--color-line-normal: rgba(0, 0, 0, .1);--color-line-strong: rgba(0, 0, 0, .15);--color-link: #007aff;--color-surface-primary: #f4f5f5;--color-surface-elevated: #ffffff;--color-fill-primary: rgba(15, 18, 20, .05);--color-fill-secondary: rgba(15, 18, 20, .1);--shadow-bubble: 0 1px 3px rgba(91, 91, 214, .08), 0 1px 2px rgba(0, 0, 0, .06);--shadow-input: 0 2px 8px rgba(91, 91, 214, .12);--shadow-empty-input: 0 0 1px -4px rgba(0, 0, 0, .04), 0 3px 8px -4px rgba(0, 0, 0, .04), 0 8px 17px -4px rgba(0, 0, 0, .06), 0 17px 30px -4px rgba(0, 0, 0, .06);--shadow-tablet-panel: 0 0 1px -4px rgba(0, 0, 0, .04), 0 3px 8px -4px rgba(0, 0, 0, .04), 0 8px 17px -4px rgba(0, 0, 0, .06), 0 17px 30px -4px rgba(0, 0, 0, .06);--radius-bubble: 18px;--radius-input: 24px;--font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--max-width: 480px;--header-height: 56px;--input-bar-height: 68px;--app-viewport-height: 100%;--app-visible-viewport-height: 100%;--app-viewport-offset-top: 0px;--app-viewport-offset-left: 0px;--app-keyboard-height: 0px;--app-keyboard-safe-gap: 0px;--ticket-detail-composer-height: 92px}@supports (height: 100dvh){:root{--app-viewport-height: 100dvh;--app-visible-viewport-height: 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20px 20px}.conversation-main__ticket-detail--tablet{padding:0 48px 24px}.conversation-main__ticket-detail>.ticket-detail-view{width:min(100%,760px);margin:0 auto}.message-list--mobile-active{padding:0 20px 20px;gap:12px}.message-list--mobile-active>div{width:100%}.message-list--tablet-active{padding:0 48px 24px;gap:16px}.message-list--tablet-active>div{width:min(100%,760px);margin:0 auto}.message-list__bottom-anchor{height:8px;flex:0 0 8px}.chat-page--support-action-visible .message-list--mobile-active .message-list__bottom-anchor{height:44px;flex-basis:44px}.chat-page--support-action-visible .message-list--tablet-active .message-list__bottom-anchor{height:42px;flex-basis:42px}.chat-page--conversation-ended .message-list--mobile-active,.chat-page--conversation-ended .message-list--tablet-active{scroll-padding-bottom:88px}.chat-page--conversation-ended .message-list--mobile-active .message-list__bottom-anchor,.chat-page--conversation-ended .message-list--tablet-active 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