:root{--primary: #4F46E5;--primary-2: #7C3AED;--accent: #06B6D4;--bg: #F8FAFC;--surface: #FFFFFF;--text: #0F172A;--muted: #64748B;--border: #E2E8F0;--ok: #10B981;--warn: #F59E0B;--err: #EF4444;--radius: 12px;--mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace}@media(prefers-color-scheme:dark){:root{--bg: #0B1020;--surface: #121A30;--text: #E5E7EB;--muted: #94A3B8;--border: #243049}}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,PingFang SC,HarmonyOS Sans,Microsoft YaHei,Noto Sans SC,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}#app{max-width:640px;margin:0 auto;padding:24px 16px 48px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-top:20px;box-shadow:0 4px 16px #0f172a0f}h1{font-size:22px;margin-bottom:4px}.sub{color:var(--muted);font-size:14px;margin-bottom:16px}label{display:block;font-size:13px;color:var(--muted);margin:12px 0 6px}input,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:15px;background:var(--surface);color:var(--text)}input:focus,textarea:focus{outline:2px solid var(--primary);border-color:transparent}button{width:100%;padding:12px;border:none;border-radius:8px;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;font-size:15px;font-weight:600;cursor:pointer;margin-top:16px}button:disabled{opacity:.5;cursor:not-allowed}button.ghost{background:transparent;color:var(--primary);border:1px solid var(--primary)}.steps{display:flex;gap:8px;margin-bottom:20px}.step{flex:1;text-align:center;font-size:12px;color:var(--muted);padding:6px;border-bottom:2px solid var(--border)}.step.active{color:var(--primary);border-color:var(--primary);font-weight:600}.step.done{color:var(--ok);border-color:var(--ok)}.mono{font-family:var(--mono);font-size:13px;word-break:break-all;background:var(--bg);padding:12px;border-radius:8px}.msg{font-size:14px;margin-top:12px}.msg.err{color:var(--err)}.msg.ok{color:var(--ok)}.badge{display:inline-block;padding:2px 8px;border-radius:6px;font-size:12px;background:var(--bg);border:1px solid var(--border);margin-right:6px}.row{display:flex;gap:8px;align-items:center}.row button{flex:0 0 auto;width:auto;padding:8px 16px;margin-top:0}a{color:var(--primary);text-decoration:none}.footer{margin-top:32px;text-align:center;color:var(--muted);font-size:12px}