:root{--bg-primary: #f8fafc;--bg-secondary: #ffffff;--bg-tertiary: #f1f5f9;--text-primary: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--border-color: #e2e8f0;--primary: #2563eb;--primary-hover: #1d4ed8;--danger: #dc2626;--danger-hover: #b91c1c;--secondary: #64748b;--secondary-hover: #475569;--success: #16a34a;--warning: #d97706;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--radius: 12px;--radius-sm: 8px;--transition: .2s ease}[data-theme=dark]{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--border-color: #334155;--primary: #3b82f6;--primary-hover: #60a5fa;--danger: #ef4444;--danger-hover: #f87171;--secondary: #94a3b8;--secondary-hover: #cbd5e1;--success: #22c55e;--warning: #fbbf24;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4), 0 2px 4px -2px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .5), 0 4px 6px -4px rgba(0, 0, 0, .5)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang SC,Microsoft YaHei,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;transition:background-color var(--transition),color var(--transition);min-height:100vh}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}#app{max-width:800px;margin:0 auto;padding:16px;min-height:100vh;display:flex;flex-direction:column}.header{display:flex;align-items:center;justify-content:space-between;padding:8px 0 16px}.title{font-size:1.75rem;font-weight:700;color:var(--text-primary)}.main{flex:1;display:flex;flex-direction:column;gap:16px}.footer{text-align:center;padding:16px 0;color:var(--text-muted);font-size:.875rem}.theme-toggle{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-sm);width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-secondary);transition:all var(--transition)}.theme-toggle:hover{border-color:var(--primary);color:var(--primary)}.theme-toggle .icon-sun{display:none}.theme-toggle .icon-moon,[data-theme=dark] .theme-toggle .icon-sun{display:block}[data-theme=dark] .theme-toggle .icon-moon{display:none}.control-panel{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:16px}.control-label{display:block;font-size:.875rem;font-weight:600;color:var(--text-secondary);margin-bottom:8px}.size-buttons,.rounds-buttons{display:flex;flex-wrap:wrap;gap:8px}.size-btn,.rounds-btn{padding:8px 16px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background:var(--bg-tertiary);color:var(--text-secondary);font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition);white-space:nowrap}.size-btn:hover,.rounds-btn:hover{border-color:var(--primary);color:var(--primary)}.size-btn.active,.rounds-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.action-buttons{display:flex;gap:12px}.btn{padding:12px 24px;border:none;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition);flex:1}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:var(--danger-hover)}.btn-secondary{background:var(--secondary);color:#fff;padding:8px 20px;font-size:.875rem;flex:none}.btn-secondary:hover:not(:disabled){background:var(--secondary-hover)}.speed-display{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:20px}.speed-gauge{text-align:center;padding:16px 0}.gauge-value{font-size:3.5rem;font-weight:800;color:var(--primary);line-height:1.2;display:flex;align-items:baseline;justify-content:center;gap:8px}.gauge-unit{font-size:1.25rem;font-weight:600;color:var(--text-secondary)}.gauge-label{font-size:.95rem;color:var(--text-muted);margin-top:4px}.gauge-label.testing{color:var(--success)}.gauge-label.error{color:var(--danger)}.progress-section{display:flex;flex-direction:column;gap:8px}.progress-bar-container{width:100%;height:12px;background:var(--bg-tertiary);border-radius:6px;overflow:hidden}.progress-bar{height:100%;background:linear-gradient(90deg,var(--primary),#60a5fa);border-radius:6px;transition:width .1s linear;position:relative;overflow:hidden}.progress-bar:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);animation:shimmer 1.5s infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.progress-bar.idle:after{display:none}.progress-info{display:flex;justify-content:space-between;font-size:.875rem;color:var(--text-secondary)}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.stat-item{background:var(--bg-tertiary);border-radius:var(--radius-sm);padding:12px 16px;display:flex;flex-direction:column;gap:4px}.stat-label{font-size:.8rem;color:var(--text-muted)}.stat-value{font-size:1.1rem;font-weight:700;color:var(--text-primary)}.results-section,.latency-section{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:16px}.section-title{font-size:1.125rem;font-weight:700;color:var(--text-primary)}.results-table-wrapper{overflow-x:auto}.results-table{width:100%;border-collapse:collapse;font-size:.875rem}.results-table th{text-align:left;padding:8px 12px;color:var(--text-muted);font-weight:600;border-bottom:2px solid var(--border-color)}.results-table td{padding:10px 12px;color:var(--text-primary);border-bottom:1px solid var(--border-color)}.results-table tbody tr:last-child td{border-bottom:none}.results-table .status-completed{color:var(--success)}.results-table .status-cancelled{color:var(--warning)}.results-table .status-error{color:var(--danger)}.results-summary{display:flex;gap:16px;flex-wrap:wrap;padding-top:8px;border-top:1px solid var(--border-color)}.summary-item{display:flex;flex-direction:column;gap:4px;flex:1;min-width:120px}.summary-label{font-size:.8rem;color:var(--text-muted)}.summary-value{font-size:1.25rem;font-weight:700;color:var(--primary)}.no-results{text-align:center;color:var(--text-muted);padding:20px 0;font-size:.875rem}.latency-result{display:flex;gap:16px;flex-wrap:wrap}.latency-item{display:flex;flex-direction:column;gap:4px;flex:1;min-width:100px;background:var(--bg-tertiary);border-radius:var(--radius-sm);padding:12px 16px}.latency-label{font-size:.8rem;color:var(--text-muted)}.latency-value{font-size:1.1rem;font-weight:700;color:var(--text-primary)}@media (max-width: 1024px){#app{max-width:100%;padding:12px}.gauge-value{font-size:3rem}}@media (max-width: 768px){.title{font-size:1.5rem}.control-panel,.speed-display,.results-section,.latency-section{padding:16px}.gauge-value{font-size:2.5rem}.gauge-unit{font-size:1rem}.size-btn,.rounds-btn{padding:6px 12px;font-size:.8rem}.btn{padding:10px 16px;font-size:.9rem}.stats-grid{grid-template-columns:repeat(2,1fr);gap:8px}.stat-item{padding:10px 12px}.stat-value{font-size:1rem}.results-table{font-size:.8rem}.results-table th,.results-table td{padding:6px 8px}.results-summary{flex-direction:column;gap:12px}.latency-result{flex-direction:column}}@media (max-width: 380px){.size-buttons{flex-direction:column}.size-btn{width:100%;text-align:center}.action-buttons{flex-direction:column}}