:root{--bg:#000;--panel:#0000008c;--line:#ffffff24;--line-strong:#ffffff47;--text:#f2f4f7;--muted:#ffffff75;--muted-2:#ffffff9e;--accent:#fff;--data:#8fb6ff;--warn:#ffb84a;--sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--mono:"Roboto Mono", ui-monospace, "SF Mono", Menlo, monospace}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;margin:0;overflow:hidden}body{font-family:var(--sans);color:var(--text);-webkit-font-smoothing:antialiased;font-weight:400}#scene{width:100vw;height:100vh;display:block;position:fixed;inset:0}.credit{z-index:5;font-family:var(--mono);letter-spacing:.08em;color:#ffffff59;text-transform:uppercase;font-size:9px;position:fixed;bottom:10px;right:14px}.credit.credit-left{left:14px;right:auto}.music-toggle{z-index:6;background:var(--panel);width:30px;height:30px;color:var(--muted);border:1px solid var(--line);cursor:pointer;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-radius:50%;justify-content:center;align-items:center;padding:0;transition:color .18s,border-color .18s,background .18s;display:flex;position:fixed;bottom:30px;left:14px}.music-toggle:hover{color:var(--text);border-color:var(--line-strong)}.music-toggle.on{color:#05070d;background:var(--accent);border-color:var(--accent)}.tour-cta{z-index:40;background:var(--accent);color:#000;border:1px solid var(--accent);font-family:var(--sans);text-transform:uppercase;letter-spacing:.12em;cursor:pointer;opacity:.9;border-radius:2px;align-items:center;gap:9px;padding:12px 22px;font-size:11px;font-weight:600;transition:background .18s,border-color .18s,opacity .18s;position:fixed;bottom:13%;left:50%;transform:translate(-50%)}.tour-cta:hover{opacity:1;background:#d9e2ee}.tour-cta svg{margin-left:-2px;display:block}.credit a{color:#ffffff8c;text-decoration:none}.credit 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8px;font-size:11px;line-height:1}.tour-auto:hover{color:var(--text);border-color:var(--line-strong)}.tour-auto.on{background:var(--accent);border-color:var(--accent);color:#000}.tour-collapse{cursor:pointer;border:1px solid var(--line-strong);color:var(--text);background:#ffffff14;border-radius:3px;flex:none;margin-left:4px;padding:8px 12px;font-size:15px;line-height:1;display:none}.tour-collapse:active{background:#fff3}.lang-switch{border:1px solid var(--line);border-radius:2px;margin-left:auto;display:flex;overflow:hidden}.lang-btn{color:var(--muted);cursor:pointer;font-family:var(--mono);letter-spacing:.1em;background:0 0;border:none;padding:3px 7px;font-size:9px}.lang-btn+.lang-btn{border-left:1px solid var(--line)}.lang-btn:hover{color:var(--text)}.lang-btn.on{background:var(--text);color:#000}.tour-dd{flex:none;margin-bottom:14px;position:relative}.tour-dd-toggle{cursor:pointer;border:1px solid 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.glabel{margin-bottom:6px}.speed-val{color:var(--data);font-family:var(--mono);letter-spacing:0}.speed-range{width:100%}.step-item{cursor:pointer;color:var(--muted);border-left:2px solid #0000;border-radius:2px;align-items:baseline;gap:10px;padding:6px 8px;transition:background .15s,color .15s,border-color .15s;display:flex}.step-item:hover{color:var(--text);background:#ffffff0d}.step-item .step-num{font-family:var(--mono);text-align:right;width:18px;color:var(--muted);flex:none;font-size:10px}.step-item .step-title{letter-spacing:.05em;text-transform:uppercase;font-size:10px;line-height:1.3}.step-item.done{color:#fff6}.step-item.on{color:#fff;border-left-color:var(--accent);background:#ffffff12}.step-item.on .step-num{color:var(--accent)}.tour-title{color:var(--accent);letter-spacing:.14em;text-transform:uppercase;flex:none;font-size:13px;font-weight:600;line-height:1.35}.tour-body{color:var(--muted-2);flex:auto;margin:10px 0 14px;font-size:12px;line-height:1.6;overflow-y:auto}.tour-foot{flex:none;align-items:center;gap:10px;display:flex}.tour-foot button{font-family:var(--sans);text-transform:uppercase;letter-spacing:.12em;cursor:pointer;color:var(--muted-2);border:1px solid var(--line);background:0 0;border-radius:2px;flex:1;padding:9px 10px;font-size:10.5px;transition:background .18s,color .18s,border-color .18s}.tour-foot button:hover:not(:disabled){color:var(--text);border-color:var(--line-strong);background:#ffffff0f}.tour-foot button:disabled{opacity:.3;cursor:default}.tour-next{font-weight:600;background:var(--accent)!important;border-color:var(--accent)!important;color:#000!important}.tour-next:hover{background:#d9e2ee!important}@media (max-width:760px){#info{display:none}.panel{padding:12px 14px 14px}.tour-panel{width:auto;max-height:42vh;inset:auto 10px 10px}.tour-head{margin-bottom:8px}.tour-dd,.tour-speed{margin-bottom:10px}.tour-body{margin:8px 0 10px;font-size:12px}.tour-title{font-size:12px}.steps-list{max-height:56vh;top:auto;bottom:calc(100% + 4px)}.tour-collapse{display:inline-block}.tour-panel.collapsed{max-height:none}.tour-panel.collapsed .tour-dd,.tour-panel.collapsed .tour-body,.tour-panel.collapsed .tour-speed{display:none}.tour-panel.collapsed .tour-title{margin-bottom:10px}#controls{width:auto;max-height:56vh;inset:auto 10px 10px;overflow-y:auto}.credit{top:8px;bottom:auto}.credit.credit-left{top:8px}.music-toggle{inset:4px 12px auto auto}.tour-cta{top:34%;bottom:auto}}