:root{--bg:#f5f1e9;--surface:#e8e2d9;--text:#544f47;--text-muted:#969085;--accent:#d8dfe6;--crisis:#d4b9b9;--border:hsla(39,7%,55%,.3);--user-bubble:#e8e2d9;--ai-line:#d8dfe6}@media (prefers-color-scheme:dark){:root{--bg:#2c2a27;--surface:#3a3731;--text:#c8bfaf;--text-muted:#8a8479;--accent:#a7b0b8;--crisis:#9d7a78;--border:hsla(39,7%,51%,.3);--user-bubble:#3a3731;--ai-line:#a7b0b8}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:PingFang SC,-apple-system,SF Pro SC,SF Pro Text,Helvetica Neue,Microsoft YaHei,sans-serif;min-height:100vh;-webkit-font-smoothing:antialiased}a:focus,button:focus,input:focus{outline:2px solid var(--accent);outline-offset:2px}.app-container{position:relative;width:100%;max-width:480px;margin:0 auto;min-height:100vh}.page-wrapper{display:none;animation:fadeUp .3s ease}.page-wrapper.active{display:block}@keyframes 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