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button:active{transform:translateY(0)}.content-area{flex:1;overflow:hidden;position:relative}@media (max-width: 768px){.app-header{padding:0 var(--spacing-sm)}.sidebar-toggle{width:36px;height:36px}.header-title{font-size:14px}.main-content{margin-left:0!important}}@media (max-width: 1024px) and (min-width: 769px){.app.sidebar-expanded .main-content{margin-left:260px}}:root{--color-primary: #C9A66B;--color-primary-light: #E5D4B3;--color-primary-dark: #B08B4C;--color-primary-muted: #F5EDE0;--color-bg: #FAFAF8;--color-bg-elevated: #FFFFFF;--color-bg-sidebar: #C4B8A5;--color-bg-sidebar-dark: #A69B8A;--color-text: #1A1A1A;--color-text-secondary: #666666;--color-text-tertiary: #999999;--color-text-light: #FFFFFF;--color-text-muted: rgba(255, 255, 255, .8);--color-border: #E5E5E5;--color-border-light: #F0F0F0;--color-success: #52C41A;--color-warning: #FAAD14;--color-error: #FF4D4F;--color-info: #1890FF;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--shadow-xl: 0 16px 48px rgba(0, 0, 0, .16);--font-serif: "Playfair Display", "Noto Serif SC", Georgia, serif;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1);--transition-spring: .5s cubic-bezier(.34, 1.56, .64, 1);--sidebar-width: 260px;--sidebar-collapsed-width: 0px;--header-height: 60px;--input-height: 56px;--max-chat-width: 800px;--z-sidebar: 100;--z-header: 200;--z-overlay: 300;--z-modal: 400;--z-tooltip: 500}@media (max-width: 1024px){:root{--sidebar-width: 240px}}@media (max-width: 768px){:root{--sidebar-width: 280px;--header-height: 56px;--input-height: 52px}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);line-height:1.6;overflow:hidden}#root{width:100vw;height:100vh;overflow:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-serif);font-weight:600;line-height:1.3}a{color:var(--color-primary-dark);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary)}button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;outline:none}button:disabled{cursor:not-allowed;opacity:.6}input,textarea{font-family:inherit;font-size:inherit;border:none;outline:none;background:transparent}input::placeholder,textarea::placeholder{color:var(--color-text-tertiary)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-primary-light);border-radius:var(--radius-full);opacity:.6;transition:background .2s ease}::-webkit-scrollbar-thumb:hover{background:var(--color-primary)}::-webkit-scrollbar-corner{background:transparent}*{scrollbar-width:thin;scrollbar-color:var(--color-primary-light) transparent}.scrollbar-hidden{scrollbar-width:none;-ms-overflow-style:none}.scrollbar-hidden::-webkit-scrollbar{display:none}::selection{background:var(--color-primary-light);color:var(--color-text)}:focus-visible{outline:none}button:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInLeft{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes fadeInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes slideInLeft{0%{transform:translate(-100%)}to{transform:translate(0)}}@keyframes slideOutLeft{0%{transform:translate(0)}to{transform:translate(-100%)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes bounce{0%,80%,to{transform:translateY(0)}40%{transform:translateY(-6px)}60%{transform:translateY(-3px)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes typing{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-4px)}}.animate-fade-in{animation:fadeIn var(--transition-normal) ease-out forwards}.animate-fade-in-up{animation:fadeInUp var(--transition-normal) ease-out forwards}.animate-fade-in-down{animation:fadeInDown var(--transition-normal) ease-out forwards}.animate-scale-in{animation:scaleIn var(--transition-normal) ease-out forwards}.animate-pulse{animation:pulse 2s ease-in-out infinite}.animate-spin{animation:spin 1s linear infinite}