:root{color-scheme:dark;--bg: #050505;--text: #f5f5f5;--dim: #888;--panel: #0c1222;--panel-top: #162745;--line: #35507d;--accent-cool: #93c8ff}*{box-sizing:border-box;margin:0;padding:0}html,body,#app{width:100%;height:100%;overflow:hidden;font-family:Courier New,monospace;background:radial-gradient(circle at 50% 40%,#111,#070707,#020202);color:var(--text)}.landing{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.landing-content{text-align:center;width:min(1100px,96vw);padding:20px}.landing-title{font-size:42px;font-weight:400;letter-spacing:.15em;line-height:1.2;margin-bottom:8px}.landing-subtitle{font-size:14px;color:var(--dim);margin-bottom:40px;letter-spacing:.1em}.landing-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:32px}.landing-column{border:1px solid #2f2f2f;border-radius:8px;padding:14px 12px 12px}.landing-column-title{text-align:left;font-size:18px;font-weight:400;color:#d6d6d6;margin-bottom:12px}.landing-options{display:flex;flex-direction:column;gap:10px}.landing-option{display:flex;align-items:center;gap:16px;padding:16px 20px;background:transparent;border:1px solid #333;border-radius:6px;color:var(--text);font-family:Courier New,monospace;font-size:15px;text-align:left;cursor:pointer;transition:border-color .2s,background .2s}.landing-option:hover,.landing-option:focus{border-color:var(--text);background:#ffffff0a;outline:none}.option-number{font-size:24px;font-weight:700;color:var(--dim);min-width:30px}.landing-option:hover .option-number{color:var(--text)}.option-text{line-height:1.4;font-size:15px;font-weight:400}.option-detail{color:var(--dim);font-size:13px}.landing-controls{font-size:12px;color:#555;line-height:1.8}.landing-tagline{margin-top:12px;font-size:13px;color:#888}@media(max-width:900px){.landing-columns{grid-template-columns:1fr}}.menu-btn{background:transparent;border:1px solid #444;border-radius:4px;color:#aaa;font-family:Courier New,monospace;font-size:13px;letter-spacing:.05em;padding:5px 12px;cursor:pointer;transition:color .2s,border-color .2s,background .2s}.menu-btn:hover,.menu-btn:focus{color:var(--text);border-color:var(--text);background:#ffffff0f;outline:none}.game-shell{width:100%;height:100%;display:flex;flex-direction:column;align-items:center}.game-shell .menu-btn{align-self:flex-start;margin:8px 12px 0;flex-shrink:0}.game-stage{position:relative;display:inline-block;flex-shrink:1;min-height:0}.game-shell .game-stage>canvas{background:#000;border:1px solid #2b2b2b;box-shadow:0 0 0 1px #0f0f0f inset,0 0 40px #ffffff0d;max-width:94vw;max-height:calc(100vh - 48px);width:auto;height:auto;display:block}.split-shell{height:100%;padding:14px;display:flex;flex-direction:column;gap:12px;position:relative}.split-shell .menu-btn{position:absolute;top:18px;right:24px;z-index:100}.split-layout{flex:1;min-height:0;display:grid;grid-template-columns:.56fr 1.44fr;gap:12px}.pane{min-height:0;display:grid;grid-template-rows:auto 1fr;border-radius:18px;overflow:hidden;border:1px solid var(--line);background:linear-gradient(180deg,#141e34e6,#0b101ff2);box-shadow:inset 0 1px #ffffff1f,0 12px 34px #00000059}.pane-header{padding:11px 15px;font-size:.79rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-cool);border-bottom:1px solid rgba(116,157,214,.44);background:linear-gradient(90deg,#1a3258c2,#0e182fc7)}.pane-body{min-height:0;position:relative;padding:8px}.torus-host{width:100%;height:100%;background:#f3eee2;border-radius:12px}.torus-host canvas{width:100%;height:100%;display:block;border-radius:12px;background:transparent}#game-pane .pane-body canvas{width:100%;height:100%;display:block;border-radius:12px;border:1px solid rgba(84,118,173,.52);background:#04060e}.sphere-shell #game-pane .pane-body{display:grid;place-items:center}.sphere-shell #game-pane .pane-body #sphere-game-canvas{width:auto;height:auto;max-width:100%;max-height:100%}#torus-pane .pane-body,#sphere-pane .pane-body{background:#f3eee2}.torus-fallback{width:100%;height:100%;border-radius:12px;border:1px solid rgba(84,118,173,.52);display:grid;place-items:center;text-align:center;padding:16px;color:#4e5a70;background:#f3eee2}