:root{--color-bg: #1a1a2e;--color-bg-secondary: #16213e;--color-card: #0f3460;--color-primary: #7c3aed;--color-primary-light: #8b5cf6;--color-primary-dark: #6d28d9;--color-text: #e2e8f0;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-border: #334155;--color-success: #10b981;--color-bubble-ai: #1e293b;--color-bubble-user: #7c3aed;--color-input-bg: #1e293b;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{height:100%;overflow:hidden;background:var(--color-bg);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-size:14px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;user-select:none;-webkit-user-select:none}#app{height:100%}.app-container{height:100%;max-width:480px;margin:0 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