*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--nac-primary: #1a56db;--nac-primary-dark: #1e429f;--nac-secondary: #0e9f6e;--nac-accent: #ff5a1f;--nac-bg: #f9fafb;--nac-card: #ffffff;--nac-border: #e5e7eb;--nac-text: #111827;--nac-text-secondary: #6b7280;--nac-success: #0e9f6e;--nac-warning: #ff5a1f;--nac-error: #e02424;--nac-chain: #7e3af2;font-size:16px;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,sans-serif}body{background-color:var(--nac-bg);color:var(--nac-text);line-height:1.6;min-height:100vh}#root{min-height:100vh;display:flex;flex-direction:column}.app-layout{display:flex;flex-direction:column;min-height:100vh}.app-header{background:linear-gradient(135deg,#1a1a2e,#16213e,#0f3460);color:#fff;padding:0 2rem;height:64px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px #0000004d}.app-logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff}.app-logo-icon{width:36px;height:36px;background:linear-gradient(135deg,#1a56db,#7e3af2);border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px}.app-logo-text{font-size:1.1rem;font-weight:600;letter-spacing:.5px}.app-nav{display:flex;align-items:center;gap:1.5rem}.app-nav a{color:#ffffffd9;text-decoration:none;font-size:.9rem;transition:color .2s;padding:4px 8px;border-radius:4px}.app-nav a:hover,.app-nav a.active{color:#fff;background:#ffffff1a}.lang-toggle{background:#ffffff26;border:1px solid rgba(255,255,255,.3);color:#fff;padding:4px 12px;border-radius:20px;cursor:pointer;font-size:.85rem;transition:all .2s}.lang-toggle:hover{background:#ffffff40}.app-main{flex:1;padding:2rem;max-width:1200px;margin:0 auto;width:100%}.card{background:var(--nac-card);border:1px solid var(--nac-border);border-radius:12px;padding:1.5rem;box-shadow:0 1px 3px #0000000d}.card-title{font-size:1.1rem;font-weight:600;color:var(--nac-text);margin-bottom:1rem;padding-bottom:.75rem;border-bottom:1px solid var(--nac-border)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 20px;border-radius:8px;border:none;cursor:pointer;font-size:.9rem;font-weight:500;transition:all .2s;text-decoration:none}.btn-primary{background:var(--nac-primary);color:#fff}.btn-primary:hover{background:var(--nac-primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px #1a56db4d}.btn-secondary{background:#fff;color:var(--nac-primary);border:1px solid var(--nac-primary)}.btn-secondary:hover{background:#eff6ff}.btn-success{background:var(--nac-success);color:#fff}.btn-chain{background:var(--nac-chain);color:#fff}.btn-chain:hover{background:#6c2bd9}.btn-sm{padding:4px 12px;font-size:.8rem}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.form-group{margin-bottom:1.25rem}.form-label{display:block;font-size:.875rem;font-weight:500;color:var(--nac-text);margin-bottom:.4rem}.form-label .required{color:var(--nac-error);margin-left:2px}.form-input,.form-select,.form-textarea{width:100%;padding:10px 14px;border:1px solid var(--nac-border);border-radius:8px;font-size:.9rem;color:var(--nac-text);background:#fff;transition:border-color .2s,box-shadow .2s;font-family:inherit}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--nac-primary);box-shadow:0 0 0 3px #1a56db1a}.form-textarea{resize:vertical;min-height:100px}.badge{display:inline-flex;align-items:center;padding:2px 10px;border-radius:20px;font-size:.75rem;font-weight:500}.badge-success{background:#d1fae5;color:#065f46}.badge-warning{background:#fef3c7;color:#92400e}.badge-error{background:#fee2e2;color:#991b1b}.badge-info{background:#dbeafe;color:#1e40af}.badge-purple{background:#ede9fe;color:#5b21b6}.badge-gray{background:#f3f4f6;color:#374151}.steps{display:flex;align-items:center;margin-bottom:2rem;overflow-x:auto;padding-bottom:.5rem}.step{display:flex;flex-direction:column;align-items:center;flex:1;min-width:80px;position:relative}.step:after{content:"";position:absolute;top:16px;left:50%;width:100%;height:2px;background:var(--nac-border);z-index:0}.step:last-child:after{display:none}.step-icon{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:600;z-index:1;background:var(--nac-border);color:var(--nac-text-secondary)}.step.active .step-icon{background:var(--nac-primary);color:#fff}.step.done .step-icon{background:var(--nac-success);color:#fff}.step.done:after{background:var(--nac-success)}.step-label{font-size:.7rem;color:var(--nac-text-secondary);margin-top:6px;text-align:center;white-space:nowrap}.step.active .step-label{color:var(--nac-primary);font-weight:500}.progress-bar{height:8px;background:var(--nac-border);border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--nac-primary),var(--nac-chain));border-radius:4px;transition:width .5s ease}.node-status{display:flex;align-items:center;gap:6px;font-size:.8rem}.node-dot{width:8px;height:8px;border-radius:50%;background:#9ca3af}.node-dot.connected{background:var(--nac-success);box-shadow:0 0 6px var(--nac-success);animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.hash-display{font-family:Courier New,monospace;font-size:.75rem;background:#f3f4f6;padding:8px 12px;border-radius:6px;word-break:break-all;color:var(--nac-chain);border:1px solid #e5e7eb}.table{width:100%;border-collapse:collapse}.table th{text-align:left;padding:10px 16px;font-size:.8rem;font-weight:600;color:var(--nac-text-secondary);background:#f9fafb;border-bottom:1px solid var(--nac-border);text-transform:uppercase;letter-spacing:.5px}.table td{padding:12px 16px;border-bottom:1px solid var(--nac-border);font-size:.875rem}.table tr:hover td{background:#f9fafb}.empty-state{text-align:center;padding:3rem 1rem;color:var(--nac-text-secondary)}.empty-state-icon{font-size:3rem;margin-bottom:1rem;opacity:.5}.spinner{width:24px;height:24px;border:3px solid var(--nac-border);border-top-color:var(--nac-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.app-main{padding:1rem}.app-header{padding:0 1rem}.app-logo-text{display:none}}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1a1a2e,#16213e,#0f3460);padding:2rem}.auth-card{background:#fff;border-radius:16px;padding:2.5rem;width:100%;max-width:420px;box-shadow:0 20px 60px #0000004d}.auth-logo{text-align:center;margin-bottom:2rem}.auth-logo-icon{width:64px;height:64px;background:linear-gradient(135deg,#1a56db,#7e3af2);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:700;color:#fff;margin:0 auto 1rem}.auth-title{font-size:1.5rem;font-weight:700;color:var(--nac-text);margin-bottom:.25rem}.auth-subtitle{font-size:.875rem;color:var(--nac-text-secondary)}.home-hero{background:linear-gradient(135deg,#1a1a2e,#0f3460);color:#fff;border-radius:16px;padding:3rem 2rem;margin-bottom:2rem;text-align:center}.home-hero h1{font-size:2rem;font-weight:700;margin-bottom:.75rem}.home-hero p{font-size:1rem;opacity:.85;margin-bottom:1.5rem}.home-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:2rem}.stat-card{background:#fff;border:1px solid var(--nac-border);border-radius:12px;padding:1.25rem;text-align:center}.stat-value{font-size:1.75rem;font-weight:700;color:var(--nac-primary)}.stat-label{font-size:.8rem;color:var(--nac-text-secondary);margin-top:4px}.flow-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem;margin:1.5rem 0}.flow-step{background:#fff;border:1px solid var(--nac-border);border-radius:12px;padding:1.25rem 1rem;text-align:center;transition:all .2s}.flow-step:hover{border-color:var(--nac-primary);box-shadow:0 4px 12px #1a56db1a}.flow-step-num{width:32px;height:32px;background:linear-gradient(135deg,var(--nac-primary),var(--nac-chain));color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:600;margin:0 auto .75rem}.flow-step-title{font-size:.85rem;font-weight:600;color:var(--nac-text);margin-bottom:.25rem}.flow-step-desc{font-size:.75rem;color:var(--nac-text-secondary)}.alert{padding:12px 16px;border-radius:8px;font-size:.875rem;margin-bottom:1rem;display:flex;align-items:flex-start;gap:10px}.alert-success{background:#d1fae5;color:#065f46;border:1px solid #a7f3d0}.alert-error{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5}.alert-warning{background:#fef3c7;color:#92400e;border:1px solid #fcd34d}.alert-info{background:#dbeafe;color:#1e40af;border:1px solid #93c5fd}