:root{--bg:#0b0f14;--surface:#141b26;--text:#eef3f8;--text-dim:#c8d4e4;--muted:#8b9cb3;--accent:#3b82f6;--accent-soft:#60a5fa;--live:#34d399;--border:#2a3545}*{box-sizing:border-box}body,html{margin:0;padding:0;min-height:100%;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Noto Sans KR,sans-serif;line-height:1.45}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}body.room-immersive{overflow:hidden}body.room-immersive #room-display-root{position:fixed;inset:0;z-index:9999;overflow:hidden;background:var(--bg)}