:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-family:Arial,Helvetica,sans-serif}body{margin:0;overflow:hidden}#intro-overlay{z-index:100;box-sizing:border-box;color:#f7f9ff;background:#020308c7;place-items:center;padding:24px;display:grid;position:fixed;inset:0}#intro-overlay[hidden]{display:none}.intro-panel{box-sizing:border-box;background:#070a12f0;border:1px solid #fff3;border-radius:8px;width:min(560px,100%);max-height:min(720px,100vh - 48px);padding:28px;overflow:auto;box-shadow:0 24px 80px #0000008c}.intro-panel h1{letter-spacing:0;margin:0 0 12px;font-size:32px;line-height:1.1}.intro-panel p{color:#d8deed;margin:0;font-size:16px;line-height:1.5}.intro-controls{gap:10px;margin:22px 0 26px;display:grid}.intro-control-row{color:#d8deed;grid-template-columns:112px 1fr;align-items:center;gap:12px;font-size:15px;line-height:1.35;display:grid}.intro-control-row kbd{color:#fff;text-align:center;background:#ffffff1a;border:1px solid #ffffff47;border-radius:6px;min-width:0;padding:7px 9px;font:700 13px Arial,Helvetica,sans-serif;display:inline-block}.intro-start-button{color:#05070b;cursor:pointer;background:#fff;border:0;border-radius:6px;width:100%;min-height:46px;font:700 15px Arial,Helvetica,sans-serif}.intro-start-button:focus-visible{outline-offset:3px;outline:3px solid #6f6}.intro-start-button:hover{background:#e8eeff}@media (width<=520px){#intro-overlay{align-items:end;padding:16px}.intro-panel{max-height:calc(100vh - 32px);padding:22px}.intro-panel h1{font-size:27px}.intro-control-row{grid-template-columns:1fr;gap:6px}.intro-control-row kbd{width:fit-content}}