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48px);margin:0 24px 20px;padding:14px 16px;font-family:IBM Plex Mono,monospace;font-size:15px;border-radius:10px;border:1.5px solid var(--border);background:var(--surface);color:var(--text);resize:none;outline:none;transition:border-color .15s ease}.tf-input:focus{border-color:var(--accent)}.tf-input:disabled{opacity:.6;cursor:not-allowed}.tf-input::placeholder{color:var(--text-secondary)}.tf-live-stats{display:flex;align-items:center;justify-content:center;gap:24px;padding:18px 24px 26px}.tf-live-stat{display:flex;flex-direction:column;align-items:center}.tf-live-value{font-family:IBM Plex Mono,monospace;font-size:26px;font-weight:600}.tf-live-label{font-size:12px;color:var(--text-secondary);margin-top:2px}.tf-live-divider{width:1px;height:30px;background:var(--border)}.tf-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;padding:20px;z-index:50}.tf-modal{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:32px 28px;max-width:420px;width:100%;text-align:center;box-shadow:0 20px 50px #0000004d}.tf-modal h2{margin:0 0 14px;font-size:22px}.tf-best-badge{display:inline-block;background:var(--accent);color:var(--accent-contrast);font-weight:600;font-size:13.5px;padding:6px 14px;border-radius:20px;margin-bottom:18px}.tf-result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:26px}.tf-result-item{display:flex;flex-direction:column}.tf-result-value{font-family:IBM Plex Mono,monospace;font-size:20px;font-weight:600}.tf-result-label{font-size:11.5px;color:var(--text-secondary);margin-top:3px}.tf-restart-btn{width:100%;padding:13px;border:none;border-radius:10px;background:var(--accent);color:var(--accent-contrast);font-size:15px;font-weight:600;cursor:pointer;font-family:inherit;transition:opacity .15s ease}.tf-restart-btn:hover{opacity:.9}.tf-about{max-width:720px;margin:56px auto 0;padding-top:28px;border-top:1px solid var(--border);color:var(--text-secondary);font-size:14px;line-height:1.7}.tf-about h3{color:var(--text);font-size:15px;margin-bottom:8px}@media (max-width: 640px){.tf-app{padding:20px 14px 48px}.tf-hero h1{font-size:27px}.tf-hero-stats{gap:20px}.tf-card-bar{flex-direction:column;align-items:flex-start}.tf-text-display{font-size:16px;margin:10px 16px 16px}.tf-input{width:calc(100% - 32px);margin:0 16px 16px}.tf-live-stats{gap:14px;flex-wrap:wrap}.tf-live-value{font-size:21px}.tf-result-grid{grid-template-columns:repeat(2,1fr)}}