:root{--bg-primary:#0a0a0f;--bg-card:#14141a;--text-primary:#e8e0d8;--text-secondary:#8b7b6b;--text-dim:#5a4f44;--accent:#c4956a;--accent-soft:#a87c5a;--border:#b496781f;--bubble-user:#1a1a24;--bubble-bot:#14141a}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-primary);color:var(--text-primary);height:100dvh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;overflow:hidden}#root{height:100%}.app{flex-direction:column;max-width:600px;height:100%;margin:0 auto;display:flex}.header{border-bottom:1px solid var(--border);background:var(--bg-primary);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.header-title{color:var(--text-primary);font-size:16px;font-weight:600}.header-status{color:#6a8a6a;font-size:11px}.chat-area{flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;overflow-y:auto}.welcome{text-align:center;color:var(--text-secondary);padding:60px 20px}.welcome p{margin-bottom:8px;font-size:16px}.welcome .hint{color:var(--text-dim);font-size:12px}.msg-row{flex-direction:column;max-width:85%;display:flex}.msg-row.user{align-self:flex-end;align-items:flex-end}.msg-row.assistant{align-self:flex-start;align-items:flex-start}.bubble{border-radius:14px;padding:10px 14px;font-size:15px;line-height:1.6}.bubble.user{background:var(--bubble-user);border:1px solid var(--border);border-bottom-right-radius:4px}.bubble.assistant{background:var(--bubble-bot);border:1px solid var(--border);border-bottom-left-radius:4px}.chinese{color:var(--text-primary)}.english{color:var(--text-secondary);margin-top:4px;font-size:12px;font-style:italic}.bubble.streaming .chinese:after{content:"▊";color:var(--accent);animation:1s step-end infinite blink}@keyframes blink{50%{opacity:0}}.loading-dots span{color:var(--text-dim);font-size:20px;animation:1.4s infinite dotPulse}.loading-dots span:nth-child(2){animation-delay:.2s}.loading-dots span:nth-child(3){animation-delay:.4s}@keyframes dotPulse{0%,80%,to{opacity:.3}40%{opacity:1}}.replay-btn{border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:8px;margin-top:8px;padding:4px 12px;font-size:12px}.replay-btn:hover{color:var(--accent);border-color:var(--accent)}.input-area{border-top:1px solid var(--border);background:var(--bg-primary);gap:8px;padding:12px 16px;display:flex}.chat-input{border:1px solid var(--border);background:var(--bg-card);color:var(--text-primary);border-radius:10px;outline:none;flex:1;padding:10px 14px;font-family:inherit;font-size:15px}.chat-input:focus{border-color:var(--accent-soft)}.chat-input::placeholder{color:var(--text-dim)}.chat-input:disabled{opacity:.5}.send-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:10px;padding:10px 20px;font-family:inherit;font-size:15px;font-weight:500}.send-btn:hover{background:var(--accent-soft)}.send-btn:disabled{opacity:.4;cursor:default}.chat-area::-webkit-scrollbar{width:4px}.chat-area::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}