:root{color:#f5f2eb;font-synthesis:none;text-rendering:optimizelegibility;--panel:#0a0c11db;--line:#ffffff1f;--line-strong:#fff3;--muted:#a9a8a4;--gold:#e1bd68;--gold-soft:#e1bd6829;--ready:#75d7ad;--error:#ff8f84;background:#080a0e;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html,body,#app,#viewport{width:100%;height:100%;margin:0;overflow:hidden}body{background:#080a0e}button,kbd{font:inherit}button{color:inherit}button:focus-visible,summary:focus-visible{outline:2px solid var(--gold);outline-offset:3px}[hidden]{display:none!important}#viewport,#viewport canvas{display:block}#viewport canvas{outline:none;width:100%;height:100%}.top-bar{z-index:5;pointer-events:none;justify-content:space-between;align-items:flex-start;width:100%;padding:20px;transition:opacity .18s;display:flex;position:fixed;top:0;left:0}.brand,.scene-status,.hud-button,.help-panel,.interaction-hint,.tour-panel,.camera-dock,.position-readout,.error-panel{border:1px solid var(--line);background:var(--panel);-webkit-backdrop-filter:blur(18px)saturate(120%);box-shadow:0 16px 48px #00000042}.brand{border-radius:12px;align-items:center;gap:10px;min-height:52px;padding:6px 14px 6px 8px;display:flex}.brand-logo{object-fit:contain;width:48px;height:40px}.brand-copy strong,.brand-copy small{display:block}.brand-copy strong{font-size:15px;line-height:1.1}.brand-copy small{color:var(--muted);letter-spacing:.14em;text-transform:uppercase;margin-top:3px;font-size:10px;font-weight:700;line-height:1}.top-actions{pointer-events:auto;align-items:center;gap:8px;display:flex}.scene-status,.hud-button{border-radius:11px;min-height:44px}.scene-status{color:#d8d7d2;align-items:center;gap:9px;padding:0 14px;font-size:13px;display:flex}.status-dot{background:#8992a0;border-radius:50%;width:8px;height:8px}.scene-status[data-state=loading] .status-dot,.scene-status[data-state=building] .status-dot{background:var(--gold);animation:1.1s ease-in-out infinite status-pulse;box-shadow:0 0 0 4px #e1bd681f}.scene-status[data-state=ready] .status-dot{background:var(--ready);box-shadow:0 0 0 4px #75d7ad1f}.scene-status[data-state=error] .status-dot{background:var(--error);box-shadow:0 0 0 4px #ff8f841f}@keyframes status-pulse{50%{opacity:.42;transform:scale(.8)}}.hud-button{color:#d9d7d1;cursor:pointer;align-items:center;gap:9px;padding:0 10px 0 13px;transition:border-color .14s,background .14s,color .14s;display:inline-flex}.hud-button:hover:not(:disabled),.hud-button[aria-expanded=true]{color:#fff;background:#18191ef0;border-color:#e1bd6875}.hud-button:disabled{cursor:default;opacity:.42}kbd{border:1px solid var(--line-strong);color:#f0ede6;background:#ffffff12;border-bottom-color:#ffffff52;border-radius:6px;place-items:center;min-width:27px;min-height:25px;padding:3px 7px;font-size:12px;line-height:1;transition:border-color .1s,background .1s,color .1s,transform .1s;display:inline-grid;box-shadow:inset 0 -1px #ffffff12}kbd.is-pressed{border-color:var(--gold);background:var(--gold);color:#17120a;transform:translateY(1px)}.help-panel{z-index:9;border-radius:16px;width:min(390px,100vw - 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