:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--bg: #f8f9fa;--card: #ffffff;--green: #2ecc71;--red: #e74c3c;--blue: #3498db}body,html{font-family:Inter,-apple-system,sans-serif;background:var(--bg);color:#333;margin:0;padding:0;width:100%;overflow-x:hidden;display:flex;justify-content:center}.container{width:100%;max-width:650px;padding:40px 20px;box-sizing:border-box;min-height:100vh}header h1{font-size:1.8rem;margin:0 0 10px;letter-spacing:-.5px}header p{color:#666;margin-bottom:30px;line-height:1.5}textarea{width:100%;padding:15px;border:1px solid #ddd;border-radius:12px;font-size:16px;resize:none;font-family:inherit;box-shadow:inset 0 2px 4px #00000005;transition:border .2s;box-sizing:border-box;margin-bottom:20px}textarea:focus{outline:none;border-color:var(--blue)}.controls{display:flex;gap:10px;margin:10px 0 20px;flex-wrap:wrap}.demo-btn{background:#eee;border:none;padding:10px 15px;border-radius:6px;cursor:pointer;font-size:.85rem;color:#555;flex:1;white-space:nowrap}.demo-btn:hover{background:#e0e0e0}.demo-btn.danger{color:var(--red);background:#fff0f0}.subscriber-input{display:flex;align-items:center;gap:10px;background:#fff;padding:5px 10px;border-radius:6px;border:1px solid #ddd;flex:1 1 100%;justify-content:space-between}.subscriber-input label{font-size:.8rem;font-weight:700;color:#666}.subscriber-input input{border:none;width:80px;font-size:1rem;font-weight:700;color:#333;outline:none;text-align:right}.stats-card{display:flex;justify-content:space-around;background:var(--card);padding:20px;border-radius:12px;box-shadow:0 4px 15px #0000000d;border-top:4px solid var(--green);transition:border-color .3s;margin-top:20px}.stats-card.expensive{border-top-color:var(--red)}.stat-item{display:flex;flex-direction:column;align-items:center}.label{font-size:.7rem;text-transform:uppercase;color:#888;letter-spacing:.5px;text-align:center}.value{font-weight:700;font-size:1.2rem;margin-top:4px}.value.large{font-size:2rem}.visualizer{margin-top:40px}.visualizer h3{font-size:1rem;color:#888;margin-bottom:15px}.segments-track{display:flex;flex-direction:column;gap:10px}.segment-block{padding:15px;border-radius:8px;position:relative;border:1px solid rgba(0,0,0,.05)}.safe-bg{background:#e8f8f5;border-left:4px solid var(--green)}.warning-bg{background:#fff5f5;border-left:4px solid var(--red)}.seg-badge{position:absolute;top:10px;right:10px;font-size:.7rem;font-weight:700;opacity:.5}.segment-block p{margin:0;font-family:monospace;word-break:break-all;color:#444;padding-right:20px}.segment-block small{display:block;margin-top:8px;color:#999;font-size:.8rem}.fix-area{margin-top:20px;background:#333;color:#fff;padding:15px;border-radius:10px;display:flex;flex-direction:column;gap:15px;text-align:center}.fix-btn{background:#fff;color:#333;border:none;padding:10px 16px;border-radius:6px;font-weight:700;cursor:pointer;width:100%}@media(min-width:600px){.subscriber-input{flex:0 0 auto}.fix-area{flex-direction:row;text-align:left}.fix-btn{width:auto}}