:root{--bg: #fafafa;--text-primary: #1d1d1f;--text-secondary: #6e6e73;--text-tertiary: #acacac;--accent: #ff0000;--accent-light: rgba(255, 0, 0, .1);--surface: #ffffff;--border: rgba(0, 0, 0, .08);--shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 4px 12px rgba(0, 0, 0, .05);--font: "Inter", -apple-system, BlinkMacSystemFont, sans-serif}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased}body{font-family:var(--font);background:var(--bg);color:var(--text-primary);min-height:100vh;min-height:100dvh}#app{min-height:100vh;min-height:100dvh}.main{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem;gap:1.5rem}.speed-container{text-align:center}.speed-title{font-size:1rem;font-weight:500;color:var(--text-secondary);margin-bottom:.5rem}.speed-number{font-size:clamp(4.5rem,18vw,8rem);font-weight:700;line-height:1;letter-spacing:-.03em;color:var(--text-primary);font-variant-numeric:tabular-nums;transition:color .3s ease}.speed-number.active{color:var(--accent)}.speed-unit{font-size:1.125rem;font-weight:500;color:var(--text-secondary);margin-top:.25rem}.progress-container{width:100%;max-width:280px;text-align:center}.progress-bar{height:3px;background:var(--border);border-radius:2px;overflow:hidden;margin-bottom:.75rem}.progress-fill{height:100%;width:0%;background:var(--accent);border-radius:2px;transition:width .3s ease}.progress-fill.active{animation:progress-pulse 1.5s ease-in-out infinite}@keyframes progress-pulse{0%,to{opacity:1}50%{opacity:.5}}.progress-status{font-size:.8125rem;color:var(--text-secondary);min-height:1.25rem}.progress-status.active{color:var(--accent)}.start-btn{width:64px;height:64px;border-radius:50%;border:none;background:var(--surface);box-shadow:var(--shadow);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;color:var(--text-primary);margin:.5rem 0;animation:heartbeat 2s ease-in-out infinite}@keyframes heartbeat{0%,to{transform:scale(1);box-shadow:0 1px 3px #0000000f,0 4px 12px #0000000d}15%{transform:scale(1.08);box-shadow:0 2px 8px #0000001a,0 8px 20px #00000014}30%{transform:scale(1);box-shadow:0 1px 3px #0000000f,0 4px 12px #0000000d}45%{transform:scale(1.05);box-shadow:0 2px 6px #00000014,0 6px 16px #0000000f}}.start-btn:hover{transform:scale(1.1);animation:none}.start-btn:active{transform:scale(.95);animation:none}.start-btn.running{background:var(--accent);color:#fff;animation:btn-running-pulse 2s ease-in-out infinite}@keyframes btn-running-pulse{0%,to{box-shadow:0 0 #00000026}50%{box-shadow:0 0 0 14px #0000}}.btn-icon{width:24px;height:24px;margin-left:2px}.start-btn.running .btn-icon{margin-left:0}.info-panel{width:100%;max-width:480px;background:var(--surface);border-radius:12px;box-shadow:var(--shadow);overflow:hidden;opacity:0;transform:translateY(10px);transition:all .4s ease;pointer-events:none}.info-panel.visible{opacity:1;transform:translateY(0);pointer-events:auto}.stats-section{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--border)}.stat-item{padding:1.25rem .5rem;text-align:center;border-right:1px solid var(--border);display:flex;flex-direction:column;align-items:center;gap:.25rem}.stat-item:last-child{border-right:none}.stat-item.active{background:#00000005}.stat-icon{width:20px;height:20px;color:var(--text-tertiary);margin-bottom:.125rem}.stat-item.active .stat-icon{color:var(--accent)}.stat-value{font-size:1.5rem;font-weight:600;color:#48484a;font-variant-numeric:tabular-nums;line-height:1}.stat-unit{font-size:.6875rem;font-weight:500;color:var(--text-secondary);letter-spacing:.01em}.stat-label{font-size:.6875rem;font-weight:500;color:var(--text-tertiary);letter-spacing:.01em}.connection-section{padding:.75rem 1rem}.connection-row{display:flex;justify-content:space-between;align-items:center;padding:.5rem 0}.connection-row:not(:last-child){border-bottom:1px solid var(--border)}.conn-label{font-size:.75rem;font-weight:500;color:var(--text-secondary)}.conn-value{font-size:.8125rem;font-weight:500;color:var(--text-secondary);text-align:right;max-width:65%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}@media(max-width:480px){.main{padding:1.5rem 1rem;gap:1.25rem}.speed-number{font-size:clamp(3.5rem,20vw,5rem)}.stats-section{grid-template-columns:repeat(2,1fr)}.stat-item{padding:1rem .5rem}.stat-item:nth-child(2){border-right:none}.stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--border)}.stat-value{font-size:1.375rem}.stat-icon{width:18px;height:18px}.start-btn{width:56px;height:56px}.btn-icon{width:20px;height:20px}.progress-container{max-width:240px}}