:root{--bg: #FDFBF7;--primary: #8BA888;--primary-light: #C5D1C4;--secondary: #A3B5C3;--accent: #E5989B;--text: #4A4A4A;--muted: #8E8E8E;--border: #E8E4DF;--card-bg: #FFFFFF;--assistant-msg: #F1F0EC;--user-msg: var(--primary);--anchor-bg: #FFF9F2}body.nana-mode{font-size:1.25rem}body.nana-mode button{padding:1.2rem 2rem;font-size:1.4rem}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Public Sans,sans-serif;background-color:var(--bg);color:var(--text);height:100vh;display:flex;flex-direction:column;overflow:hidden}h1,h2,h3{font-family:Crimson Pro,serif}.app-container{display:flex;flex-direction:column;height:100vh;max-width:800px;margin:0 auto;width:100%;background:white;box-shadow:0 0 40px #0000000d}.header{padding:1rem 1.5rem;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;background:white;z-index:10}.anchor-banner{background:var(--anchor-bg);padding:1rem 1.5rem;border-bottom:1px solid var(--border);font-size:.95rem;color:var(--text);text-align:left;line-height:1.4}.messages-container{flex:1;overflow-y:auto;padding:1.5rem;display:flex;flex-direction:column;gap:1rem;scroll-behavior:smooth}.message{max-width:80%;padding:.8rem 1.2rem;border-radius:1.2rem;line-height:1.5;font-size:1.1rem}.message.assistant{align-self:flex-start;background:var(--assistant-msg);color:var(--text);border-bottom-left-radius:.2rem}.message.user{align-self:flex-end;background:var(--user-msg);color:#fff;border-bottom-right-radius:.2rem}.input-area{padding:1.2rem 1.5rem;border-top:1px solid var(--border);background:white}.input-box{display:flex;gap:.8rem;align-items:center}input{flex:1;padding:.8rem 1.2rem;border:1px solid var(--border);border-radius:2rem;font-size:1.1rem;outline:none;background:#F8F7F5;transition:all .2s}input:focus{border-color:var(--primary);background:white}.send-btn{background:var(--primary);color:#fff;border:none;width:3rem;height:3rem;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .2s}.send-btn:hover{transform:scale(1.05)}.tools-bar{display:flex;gap:.5rem;padding:.5rem 0 1rem;overflow-x:auto}.tool-chip{padding:.4rem 1rem;border-radius:1rem;background:#F0F0F0;font-size:.9rem;white-space:nowrap;cursor:pointer;border:1px solid transparent}.tool-chip:hover{background:var(--primary-light)}.login-screen{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg);display:flex;align-items:center;justify-content:center;z-index:1000}.login-card{background:white;padding:2.5rem;border-radius:1.5rem;box-shadow:0 10px 30px #0000000d;width:100%;max-width:400px;text-align:center}