:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--blue:#4990e2;--blue-strong:#3f7ed8;--page-bg:#fff;--text:#171b22;--muted:#6f7680;--card-bg:#fff;--card-border:#d0d0d0;--card-shadow:6px 8px 10px #00000029;--footer-bg:#fff;--footer-border:#d7d7d7;--control-bg:#fff;--control-border:#d7dbe2;--machine-bg:#fff;--machine-border:#d0d0d0;--machine-text:#1d2430;--machine-code:#2c6fbf;--tile-bg:#141821;--danger:#cc3d35;--success:#209a72}html[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--page-bg:#000;--text:#f7fbff;--muted:#9aa4b3;--card-bg:#fff;--card-border:#d4d8df;--card-shadow:8px 8px 0 #ffffff14;--footer-bg:#fff;--footer-border:#d4d8df;--control-bg:#0b0f15;--control-border:#2d3643;--machine-bg:#080c12;--machine-border:#253041;--machine-text:#cbd5e1;--machine-code:#f0c95a;--danger:#f1766b;--success:#55c2a0}*{box-sizing:border-box}html,body{min-height:100%;margin:0}body{background:var(--page-bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;transition:background-color .16s,color .16s}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}.screen{min-height:100dvh;padding:58px 16px 48px}.screen--centered{place-items:center;display:grid}.screen--challenge{place-items:center;min-height:100dvh;padding:0 clamp(12px,2.8vw,28px);display:grid}.ghost-button{z-index:20;border:1px solid var(--control-border);background:color-mix(in srgb, var(--control-bg), transparent 5%);color:var(--text);border-radius:999px;position:fixed;box-shadow:0 4px 12px #0000001a}.exit-button{padding:9px 14px;top:18px;right:18px}.access-panel{border:1px solid var(--control-border);background:var(--control-bg);width:min(360px,100%);padding:28px;box-shadow:0 14px 42px #0000001a}.access-kicker,.result-kicker,.machine-title{color:var(--muted);text-transform:uppercase;margin:0 0 8px;font-size:12px;font-weight:700}.access-panel h1,.result h1{letter-spacing:0;margin:0;font-size:clamp(36px,8vw,96px);font-weight:500;line-height:1}.access-form{gap:12px;margin-top:28px;display:grid}.access-form label{color:var(--machine-text);font-size:14px}.access-form input{border:1px solid var(--control-border);background:var(--page-bg);width:100%;color:var(--text);border-radius:4px;outline:none;padding:12px 14px}.access-form input:focus{border-color:var(--blue)}.access-form button,.result button,.verify-button{background:var(--blue);color:#fff;letter-spacing:.04em;border:0;border-radius:4px;padding:14px 18px;font-weight:700}.access-form button:hover,.result button:hover,.verify-button:hover{background:var(--blue-strong)}.form-error{color:var(--danger);margin:0;font-size:13px}.mono,.machine-panel code{font-family:SFMono-Regular,Consolas,Liberation Mono,ui-monospace,monospace}.mono{color:var(--muted);font-size:12px}.challenge-stage{place-items:center;width:100%;display:grid}.challenge-stack{place-items:center;width:min(540px,100vw - 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