*{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0b0e14;--panel:#131722;--panel-2:#1a1f2e;--border:#262d40;--text:#e6e9f0;--muted:#8b93a7;--accent:#6c8cff;--accent-2:#8e6cff}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif;min-height:100vh}.shell{max-width:780px;margin:0 auto;padding:32px 20px 120px}.hero{text-align:center;padding:24px 0 28px}.lang-switch{display:flex;justify-content:flex-end;gap:4px}.lang-btn{font-size:12px;font-weight:600;color:var(--muted);background:var(--panel);border:1px solid var(--border);border-radius:999px;padding:5px 12px;cursor:pointer;transition:border-color .15s ease,color .15s ease}.lang-btn.active,.lang-btn:hover{border-color:var(--accent)}.lang-btn.active{color:var(--text);background:var(--panel-2)}.hero .badge{display:inline-block;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);border:1px solid var(--border);border-radius:999px;padding:4px 12px;margin-bottom:14px}.hero h1{font-size:30px;font-weight:700;background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}.hero p{color:var(--muted);margin-top:8px;font-size:15px}.chat{display:flex;flex-direction:column;gap:14px}.msg{border:1px solid var(--border);border-radius:14px;padding:14px 16px;line-height:1.6;font-size:15px;white-space:pre-wrap;word-break:break-word}.msg.user{background:var(--panel-2);align-self:flex-end;max-width:85%;border-color:#33406355}.msg.assistant{background:var(--panel);align-self:flex-start;max-width:95%}.sources{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.source-chip{font-size:12px;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:3px 10px;background:var(--panel-2)}.source-chip b{color:var(--accent);font-weight:600}.suggestions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:18px 0 8px}.suggestion{font-size:13px;color:var(--text);background:var(--panel);border:1px solid var(--border);border-radius:999px;padding:8px 14px;cursor:pointer;transition:border-color .15s ease}.suggestion:hover{border-color:var(--accent)}.composer{position:fixed;bottom:0;left:0;right:0;background:linear-gradient(transparent,var(--bg) 30%);padding:24px 20px}.composer-inner{max-width:780px;margin:0 auto;display:flex;gap:10px}.composer input{flex:1 1;background:var(--panel);border:1px solid var(--border);border-radius:12px;color:var(--text);font-size:15px;padding:14px 16px;outline:none}.composer input:focus{border-color:var(--accent)}.composer button{background:linear-gradient(90deg,var(--accent),var(--accent-2));border:none;border-radius:12px;color:#fff;font-size:15px;font-weight:600;padding:0 22px;cursor:pointer}.composer button:disabled{opacity:.5;cursor:default}.thinking{color:var(--muted);font-size:14px;padding-left:4px}