*{box-sizing:border-box}body{color:#1f2937;background:#f6f7fb;margin:0;font-family:Microsoft YaHei,Arial,sans-serif}#app,.app{min-height:100vh}.header{background:#fff;border-bottom:1px solid #eee;justify-content:space-between;align-items:center;height:70px;padding:0 60px;display:flex}.logo{color:#111827;font-size:24px;font-weight:700}.token{color:#666;background:#f3f4f6;border-radius:20px;padding:10px 18px}.token span{color:#2563eb;font-weight:700}.main{text-align:center;max-width:900px;margin:60px auto}.main h1{color:#111827;margin-bottom:20px;font-size:48px}.main p{color:#6b7280;font-size:18px}.chat-box{background:#fff;border-radius:18px;margin-top:40px;padding:30px;box-shadow:0 10px 30px #00000014}textarea{resize:none;border:1px solid #ddd;border-radius:12px;width:100%;height:120px;padding:15px;font-size:16px}button{color:#fff;cursor:pointer;background:#111827;border:none;border-radius:10px;width:160px;height:45px;margin-top:20px;font-size:16px}button:hover{opacity:.85}.answer{text-align:left;background:#f9fafb;border-radius:12px;margin-top:30px;padding:20px}.answer pre{white-space:pre-wrap;line-height:1.6}@media (width<=768px){.header{padding:0 20px}.main{margin:30px 20px}.main h1{font-size:32px}}
