:root{--bg: #f4f5f7;--card: #ffffff;--border: #e5e7eb;--divider: #f0f1f3;--text: #0f172a;--text-soft: #334155;--muted: #64748b;--accent: #2563eb;--accent-hover: #1d4ed8;--danger: #dc2626;--radius: 10px;--shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 1px 3px rgba(15, 23, 42, .06)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,Noto Sans SC,sans-serif;font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit}.page{width:min(1000px,calc(100% - 40px));margin:0 auto;padding:44px 0 32px}.site-header{display:flex;align-items:center;gap:14px;margin-bottom:24px;padding-bottom:18px;border-bottom:1px solid var(--border)}.site-mark{display:grid;place-items:center;flex:0 0 auto;width:40px;height:40px;border-radius:12px;background:#e8f0fe;color:var(--accent)}.site-mark svg{width:21px;height:21px}.site-title h1{margin:0;font-size:20px;font-weight:600;letter-spacing:-.01em}.site-title p{margin:2px 0 0;color:var(--muted);font-size:13px}.tools{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;align-items:stretch}.card{display:flex;flex-direction:column;padding:22px;background:var(--card);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}.card-head{margin-bottom:16px}.card-head h2{margin:0;font-size:15px;font-weight:600}.card-head p{margin:3px 0 0;color:var(--muted);font-size:12px}.row{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:22px;margin-bottom:8px}.row label{color:var(--text-soft);font-size:13px;font-weight:500}.checkbox{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:12px;white-space:nowrap;cursor:pointer;-webkit-user-select:none;user-select:none}.checkbox input{width:14px;height:14px;margin:0;accent-color:var(--accent);cursor:pointer}textarea{display:block;width:100%;min-height:140px;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:#fcfcfd;color:var(--text);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.6;resize:vertical;transition:border-color .15s ease,box-shadow .15s ease,background-color .15s ease}textarea::placeholder{color:#9aa4b2;font-family:inherit}textarea:focus{border-color:var(--accent);background:#fff;outline:none;box-shadow:0 0 0 3px #2563eb1f}.result{flex:1;background:#fafbfc;resize:none;cursor:default}.actions{display:flex;gap:8px;margin-top:14px}.btn{height:32px;padding:0 12px;border:1px solid #d6dae1;border-radius:6px;background:#fff;color:var(--text-soft);font-size:13px;font-weight:500;cursor:pointer;transition:background-color .15s ease,border-color .15s ease}.btn:hover:not(:disabled){border-color:#c3cad4;background:#f8fafc}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{border-color:var(--accent);background:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){border-color:var(--accent-hover);background:var(--accent-hover)}.btn-sm{height:26px;padding:0 10px;border-radius:5px;font-size:12px}.output{display:flex;flex:1;flex-direction:column;margin-top:18px;padding-top:16px;border-top:1px solid var(--divider)}.meta{display:inline-flex;align-items:center;gap:10px}.status{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:12px}.status:before{content:"";width:6px;height:6px;border-radius:50%;background:#cbd5e1}.status[data-state=busy]:before{background:var(--accent);animation:status-pulse 1.2s ease-in-out infinite}.status[data-state=success]{color:#15803d}.status[data-state=success]:before{background:#16a34a}.status[data-state=error]{color:var(--danger)}.status[data-state=error]:before{background:#ef4444}@keyframes status-pulse{50%{opacity:.3}}.error{margin:8px 0 0;color:var(--danger);font-size:12px;line-height:1.5}.hidden{display:none}.page-footer{margin-top:32px;color:#94a3b8;font-size:12px;text-align:right}@media(max-width:880px){.tools{grid-template-columns:1fr}}@media(max-width:560px){.page{width:calc(100% - 24px);padding-top:28px}.card{padding:16px}.actions .btn{flex:1;height:36px}}