:root{--bg: #f5f7fb;--bg-elev: #ffffff;--bg-soft: #eef1f7;--border: #e2e8f0;--border-strong: #cbd5e1;--text: #0f172a;--text-soft: #475569;--text-muted: #64748b;--primary: #4f46e5;--primary-hover: #4338ca;--primary-soft: #eef2ff;--accent: #0ea5e9;--danger: #ef4444;--success: #10b981;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .06);color-scheme:light dark}@media (prefers-color-scheme: dark){:root{--bg: #0b1020;--bg-elev: #121829;--bg-soft: #1a2238;--border: #243049;--border-strong: #334155;--text: #e2e8f0;--text-soft: #cbd5e1;--text-muted: #94a3b8;--primary: #818cf8;--primary-hover: #a5b4fc;--primary-soft: #1e2542;--accent: #38bdf8;--shadow: 0 1px 2px rgba(0, 0, 0, .2), 0 12px 32px rgba(0, 0, 0, .35)}}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.5}h1,h2,h3,p{margin:0}button,input,select{font:inherit;color:inherit}a{color:var(--primary)}.app{max-width:920px;margin:0 auto;padding:48px 20px 80px}.app-header{text-align:center;margin-bottom:28px}.app-header h1{font-size:28px;font-weight:700;letter-spacing:-.02em}.app-header p{color:var(--text-muted);margin-top:8px;font-size:14px}.tabs{display:flex;gap:4px;background:var(--bg-soft);padding:4px;border-radius:var(--radius);margin:0 auto 24px;width:fit-content;border:1px solid var(--border)}.tabs button{appearance:none;border:1px solid transparent;background:transparent;padding:8px 18px;border-radius:var(--radius-sm);cursor:pointer;color:var(--text-soft);font-weight:500;transition:all .15s ease}.tabs button:hover{color:var(--text)}.tabs button.active{background:var(--bg-elev);color:var(--primary);border-color:var(--border);box-shadow:0 1px 2px #0f172a0f}.card{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.card+.card{margin-top:20px}.card h2{font-size:16px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;gap:8px}.result{display:flex;align-items:center;gap:12px;padding:16px;background:var(--bg-soft);border:1px dashed var(--border-strong);border-radius:var(--radius-sm);margin-bottom:16px;flex-wrap:wrap}.result-text{flex:1 1 200px;font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,Consolas,monospace;font-size:16px;word-break:break-all;font-weight:600;letter-spacing:.02em;min-height:24px;color:var(--text)}.result-text.empty{color:var(--text-muted);font-weight:400;font-style:italic}.btn{appearance:none;border:1px solid var(--border);background:var(--bg-elev);color:var(--text);padding:8px 14px;border-radius:var(--radius-sm);cursor:pointer;font-weight:500;font-size:14px;transition:all .15s ease;display:inline-flex;align-items:center;gap:6px}.btn:hover{border-color:var(--border-strong)}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover)}.btn-icon{padding:8px 10px}.btn[disabled]{opacity:.5;cursor:not-allowed}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field label{font-size:13px;color:var(--text-soft);font-weight:500}.input,.select{appearance:none;border:1px solid var(--border);background:var(--bg-elev);padding:9px 12px;border-radius:var(--radius-sm);font-size:14px;outline:none;transition:border-color .15s ease,box-shadow .15s ease}.input:focus,.select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.input.with-suffix{padding-left:0}.input-wrap{display:flex;align-items:stretch;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;background:var(--bg-elev)}.input-wrap:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.input-wrap .prefix{display:flex;align-items:center;padding:0 8px;color:var(--text-muted);background:var(--bg-soft);font-family:ui-monospace,monospace;font-size:14px}.input-wrap input{border:none;background:transparent;padding:9px 12px;flex:1;min-width:0;outline:none}.input-wrap input:disabled{cursor:not-allowed;color:var(--text-muted)}.checks{display:flex;flex-wrap:wrap;gap:8px}.check{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;background:var(--bg-elev);font-size:13px;transition:all .15s ease;user-select:none}.check:hover{border-color:var(--border-strong)}.check input{margin:0;accent-color:var(--primary)}.check.checked{border-color:var(--primary);background:var(--primary-soft);color:var(--primary)}.slider-row{display:flex;align-items:center;gap:12px}.slider-row input[type=range]{flex:1;accent-color:var(--primary);height:4px}.length-pill{font-family:ui-monospace,monospace;font-weight:700;background:var(--primary-soft);color:var(--primary);padding:2px 10px;border-radius:999px;font-size:13px;min-width:36px;text-align:center}.strength{margin-top:12px;display:flex;align-items:center;gap:10px;font-size:13px}.strength-bar{flex:1;height:6px;border-radius:999px;background:var(--bg-soft);overflow:hidden}.strength-fill{height:100%;border-radius:999px;transition:width .25s ease,background .25s ease}.strength-label{font-weight:600;color:var(--text-soft);min-width:56px;text-align:right}.list-actions{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;gap:8px;flex-wrap:wrap}.list-count{color:var(--text-muted);font-size:13px}.email-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.email-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius-sm);font-family:ui-monospace,monospace;font-size:14px;word-break:break-all}.email-list li .copy{flex-shrink:0}.app-footer{text-align:center;margin-top:32px;color:var(--text-muted);font-size:12px}.app-footer a{color:inherit;text-decoration:underline}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:var(--text);color:var(--bg);padding:8px 16px;border-radius:999px;font-size:13px;font-weight:500;box-shadow:var(--shadow);animation:toast-in .2s ease}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%)}}@media (max-width: 560px){.app{padding:24px 14px 60px}.app-header h1{font-size:22px}.card{padding:18px}}